class: center, middle, inverse, title-slide # Some data viz advice ### Daniel Anderson ### Thursday, April 8, 2021 --- layout: true

 --- # whoami .pull-left[ * Research Assistant Professor: Behavioral Research and Teaching * Dad (two daughters: 8 and 6) * Pronouns: he/him/his * Primary areas of interest: 💗💗R💗💗, computational research, achievement gaps, systemic inequities, and variance between educational institutions ] .pull-right[ ![](img/IMG_1306.jpeg)
 ] --- # Resources (free) .pull-left[ [Healy](http://socviz.co)

 ] .pull-right[ [Wilke](https://serialmentor.com/dataviz/)

 ] --- # Other Resources * My classes! * Sequence + EDLD 651: Introductory Educational Data Science (EDS) + EDLD 652: Data Visualization for EDS + EDLD 653: Functional Programming for EDS + EDLD 654: Machine Learning for EDS + Capstone --- # Where to start? * I *really* recommend moving to R as quickly as possible -- http://r4ds.had.co.nz

 --- # ggplot2! .pull-left[ https://r-graphics.org ![](https://r-graphics.org/cover.jpg) ] .pull-right[ Third edition [in progress](https://ggplot2-book.org)! ![](https://images-na.ssl-images-amazon.com/images/I/31uoy-qmhEL._SX331_BO1,204,203,200_.jpg) ] --- # Last note before we really start * These slides were produced with R * See the source code [here](https://github.com/datalorax/psych-seminar19) * The focus of this particular talk is not on the code itself --- class: middle center # Different ways of encoding data ![](index_files/figure-html/data-encoding-1.png) --- # Other elements to consider * Text + How is the text displayed (e.g., font, face, location)? + What is the purpose of the text? -- * Transparency + Are there overlapping pieces? + Can transparency help? --- # Other elements to consider * Type of data + Continuous/categorical + Which can be mapped to each aesthetic? - e.g., shape and line type can only be mapped to categorical data, whereas color and size can be mapped to either. --- class: middle center # Basic Scales ![](index_files/figure-html/scales-wilke-1.png) --- # Talk with a neighbor How would you encode these data into a display? | Month | Day | Location | Temperature | |:-----:|:---:|:-------------| ------------| | Jan | 1 | Chicago | 25.6 | | Jan | 1 | San Diego | 55.2 | | Jan | 1 | Houston | 53.9 | | Jan | 1 | Death Valley | 51.0 | | Jan | 2 | Chicago | 25.5 | | Jan | 2 | San Diego | 55.3 | | Jan | 2 | Houston | 53.8 | | Jan | 2 | Death Valley | 51.2 | | Jan | 3 | Chicago | 25.3 | --- class: middle center # Putting it to practice ![](index_files/figure-html/temp-change-1.png) --- class: middle center # Alternative representation ![](index_files/figure-html/temp-change2-1.png) --- # Comparison * Both represent three scales + Two position scales (x/y axis) + One color scale (categorical for the first, continuous for the second) --- # More scales are possible ![](index_files/figure-html/five-scales-1.png) --- background-image:url(http://socviz.co/dataviz-pdfl_files/figure-html4/ch-01-multichannel-1.png) background-size:contain Additional scales can become lost without high structure in the data --- class: inverse-blue middle # Thinking more about color --- # Three fundamental uses 1. Distinguish groups from each other 1. Represent data values 1. Highlight --- # Discrete items Often no intrinsic order -- ### Qualitative color scale * Finite number of colors + Chosen to maximize distinctness, while also being *equivalent* + Equivalent - No color should stand out - No impression of order --- background-image:url(https://serialmentor.com/dataviz/color_basics_files/figure-html/qualitative-scales-1.png) background-size:contain # Some examples .footnote[See more about the Okabe Ito palette origins [here](http://jfly.iam.u-tokyo.ac.jp/color/)] --- background-image:url(https://serialmentor.com/dataviz/color_basics_files/figure-html/sequential-scales-1.png) background-size:contain # Sequential scale examples --- background-image:url(https://serialmentor.com/dataviz/color_basics_files/figure-html/diverging-scales-1.png) background-size:contain # Diverging palettes --- # Earth palette ![](index_files/figure-html/or1-1.png) --- ![](index_files/figure-html/ca1-1.png) --- # Common problems ### Too many colors More than 5-ish generally becomes difficult to track ![](index_files/figure-html/too-many-colors-1.png) --- # Use labels still too many... ![](index_files/figure-html/states-labeled-1.png) --- # Better Get a subset ![](index_files/figure-html/subset-states-1.png) --- # Best (but could still be improved) ![](index_files/figure-html/best-label-1.png) --- # Problem w/ default palette ### For {ggplot2} ![](index_files/figure-html/colorblind1-1.png) --- # Alternative: viridis ![](index_files/figure-html/viridis1-1.png) --- # Revised version ![](index_files/figure-html/unnamed-chunk-2-1.png) --- # Last few note on palettes * Do some research, find what you like .bold[and] what tends to work well * Check for colorblindness * Look into http://colorbrewer2.org/ --- class: inverse-blue middle # Visualizing Uncertainty --- # The primary problem * When we see a point on a plot, we interpret it as .bolder[THE] value. ![](index_files/figure-html/loc_point-1.png) --- # Some secondary problem * We're not great at understanding probabilities * We regularly round probabilities to 100% or 0% * As probabilities move to the tails, we're generally worse --- # How do we typically communicate uncertainty? * Error bars ![](index_files/figure-html/error_bars-1.png) --- # Thinking about uncertainty Uncertainty means exactly what it sounds like - we are not 100% sure. * We are nearly always uncertain of future events (forecasting) * We can also be uncertain about past events + I saw a parked car at 8 AM, but the next time I looked at 2PM it was gone. What time did it leave? -- ### Quantifying uncertainty * We quantify our uncertainty mathematically using probability * Framing probabilities as frequencies is generally more intuitive --- class: bottom background-image:url("https://serialmentor.com/dataviz/visualizing_uncertainty_files/figure-html/probability-waffle-1.png") background-size:contain # Framing a single uncertainty --- # Non-discrete probabilities Blue party has 1% advantage w/ margin of error of 1.76 points ### Who will win? -- ![](index_files/figure-html/pdf-1.png) .footnote[Code taken from [Wilke](https://clauswilke.com/dataviz/)] --- # Descretized version ![](index_files/figure-html/descritized2-eval-1.png) --- class: inverse-red middle # Point estimates A few alternatives to error bars --- # Multiple error bars ![](index_files/figure-html/unnamed-chunk-3-1.png) --- # Density stripes ![](index_files/figure-html/unnamed-chunk-4-1.png) --- # Actual densities ![](index_files/figure-html/densities-1.png) --- class: inverse-red middle # HOPs ### Hypothetical Outcome Plots (and related plots) --- # Standard regression plot ![](index_files/figure-html/loess1-1.png) --- # Alternative ![](index_files/figure-html/bootstrap1-1.png) --- # HOPs Hops animate the process, so you can't settle on one "truth" ![](img/loess_hop.gif) --- # Another example ![](https://github.com/wilkelab/ungeviz/raw/master/man/figures/README-cacao-samples-anim-1.gif) --- # Last few note on uncertainty * Do try to communicate uncertainty whenever possible * I'd highly recommend watching [this](https://youtu.be/E1kSnWvqCw0) talk by Matthew Kay on the topic --- class: inverse-blue middle # Data ink ratio --- # What is it? -- > ### Above all else, show the data
 \-Edward Tufte -- * Data-Ink Ratio = Ink devoted to the data / total ink used to produce the figure -- * Common goal: Maximize the data-ink ratio --- # Example ![](img/six-boxplots.png) -- * First thought might be... Cool! --- background-image:url(https://theamericanreligion.files.wordpress.com/2012/10/lee-corso-sucks.jpeg?w=660) background-size:cover --- # Minimize cognitive load * Empirically, Tufte's plot was .bolder[the most difficult] for viewers to interpret. -- * Visual cues (labels, gridlines) reduce the data-ink ratio, but can also reduce cognitive load. --- # An example ### Which do you prefer? .pull-left[ ![](index_files/figure-html/h3_bad-1.png) ] .pull-right[ ![](index_files/figure-html/h3_good-1.png) ] --- # Advice from Wilke > Whenever possible, **visualize your data with solid, colored shapes** rather than with lines that outline those shapes. Solid shapes are more easily perceived, are less likely to create visual artifacts or optical illusions, and do more immediately convey amounts than do outlines. .gray[emphasis added] --- # Another example .pull-left[ ![](index_files/figure-html/iris_lines-1.png) ] .pull-right[ ![](index_files/figure-html/iris_colored_lines-1.png) ] --- class: center middle ![](index_files/figure-html/iris_filled-1.png) --- # Labels in place of legends Prior slide is a great example of when annotations can be used in place of a legend to * reduce cognitive load * increase clarity * increase beauty * maximize the figure size --- class: inverse-red middle # Practical advice so far --- class: inverse-red middle ## Include uncertainty wherever possible
 -- ## Avoid line drawings
 -- ## Maximize the data-ink ratio within reason (but preference reduction of cognitive load) --- class: inverse-red middle ## Use color to your advantage (and think critically about the palettes you choose)
 -- ## Consider plot annotations over legends --- class: inverse-blue middle # Grouped data --- # Distributions How do we display more than one distribution at a time? --- # Boxplots ![](index_files/figure-html/boxplots-1.png) --- # Violin plots ![](index_files/figure-html/violin-1.png) --- # Jittered points ![](index_files/figure-html/jittered-1.png) --- # Sina plots ![](index_files/figure-html/sina-1.png) --- # Stacked histograms ![](index_files/figure-html/stacked-histo-1.png) --- # Overlapping densities ![](index_files/figure-html/overlap-dens-1.png) --- # Ridgeline densities ![](index_files/figure-html/ridgeline-1.png) --- class: inverse-red middle # Quick empirical examples --- # Titanic data ``` ## # A tibble: 1,313 x 5 ## name class age sex survived ## <chr> <chr> <dbl> <chr> <int> ## 1 Allen, Miss Elisabeth Walton 1st 29 female 1 ## 2 Allison, Miss Helen Loraine 1st 2 female 0 ## 3 Allison, Mr Hudson Joshua Creighton 1st 30 male 0 ## 4 Allison, Mrs Hudson JC (Bessie Waldo Daniels) 1st 25 female 0 ## 5 Allison, Master Hudson Trevor 1st 0.92 male 1 ## 6 Anderson, Mr Harry 1st 47 male 1 ## # … with 1,307 more rows ``` --- # Boxplots ![](index_files/figure-html/boxplots-empirical-1.png) --- # Violin plots ![](index_files/figure-html/violin-empirical-1.png) --- # Jittered point plots ![](index_files/figure-html/jittered-empirical-1.png) --- # Sina plot ![](index_files/figure-html/sina-empirical-1.png) --- # Stacked histogram ![](index_files/figure-html/stacked-histo-empirical-1.png) -- .realbig[🤨] --- # Dodged ![](index_files/figure-html/dodged-histo-empirical-1.png) --- # Better ![](index_files/figure-html/wrapped-histo-empirical-1.png) --- # Overlapping densities ![](index_files/figure-html/overlap-dens-empirical-1.png) -- Note the default colors really don't work well in most of these --- class: center middle ![](index_files/figure-html/overlap-dens-empirical2-1.png) --- # Ridgeline densities ![](index_files/figure-html/ridgeline-dens-empirical-1.png) --- class: inverse-blue middle # Visualizing amounts --- # Bar plots ![](index_files/figure-html/bars-1.png) --- # Flipped bars ![](index_files/figure-html/flipped_bars-1.png) --- # Dotplot ![](index_files/figure-html/dots-1.png) --- # Heatmap ![](index_files/figure-html/heatmap-1.png) --- class: inverse-red middle # A short journey ### How much does college cost? --- # Tuition data ``` ## # A tibble: 6 x 13 ## State `2004-05` `2005-06` `2006-07` `2007-08` `2008-09` `2009-10` ## <chr> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> ## 1 Alabama 5682.838 5840.550 5753.496 6008.169 6475.092 7188.954 ## 2 Alaska 4328.281 4632.623 4918.501 5069.822 5075.482 5454.607 ## 3 Arizona 5138.495 5415.516 5481.419 5681.638 6058.464 7263.204 ## 4 Arkansas 5772.302 6082.379 6231.977 6414.900 6416.503 6627.092 ## 5 California 5285.921 5527.881 5334.826 5672.472 5897.888 7258.771 ## 6 Colorado 4703.777 5406.967 5596.348 6227.002 6284.137 6948.473 ## # … with 6 more variables: 2010-11 <dbl>, 2011-12 <dbl>, 2012-13 <dbl>, ## # 2013-14 <dbl>, 2014-15 <dbl>, 2015-16 <dbl> ``` --- # By state: 2015-16 ![](index_files/figure-html/state-tuition1-1.png) -- .realbig[🤮🤮🤮] --- # Two puke emoji version .pls[ .realbig[🤮🤮] ] .prb[ ![](index_files/figure-html/state-tuition2-1.png) ] --- # One puke emoji version .pls[ .realbig[🤮] ] .prb[ ![](index_files/figure-html/state-tuition3-eval-1.png) ] --- # Kinda smiley version .pls[ .realbig[😏] ] .prb[ ![](index_files/figure-html/state-tuition4-eval-1.png) ] --- # Highlight Oregon .pls[ .realbig[🙂] ] .prb[ ![](index_files/figure-html/oregon-highlight-eval-1.png) ] --- # Not always good to sort ![](index_files/figure-html/income_df-sorted-1.png) --- # Much better ![](index_files/figure-html/income_df-1.png) --- # Heatmap ![](index_files/figure-html/heatmap2-eval-1.png) --- # Better heatmap ![](index_files/figure-html/heatmap3-eval-1.png) --- # Even better? ![](index_files/figure-html/heatmap5-eval-1.png) --- # Or maybe this one? ![](index_files/figure-html/heatmap4-eval-1.png) --- background-image: url("img/heatmap.png") class: inverse-blue background-size:contain --- # Quick aside * Think about the data you have * Given that these are state-level data, they have a geographic component --- background-image: url("img/states-heatmap.png") class: inverse bottom background-size:contain --- class: inverse-blue center middle # Some things to avoid --- # Line drawings ### As discussed earlier .pull-left[ ### 😫 ![](index_files/figure-html/dens-titanic-1.png) ] .pull-right[ ### Change the fill ![](index_files/figure-html/dens-titanic-blue-1.png) ] --- class: middle .pull-left[ ![](index_files/figure-html/iris_lines2-1.png) ] .pull-right[ ![](index_files/figure-html/iris_filled2-1.png) ] --- # Much worse ### Unnecessary 3D .pull-left[ ![](img/3d-pie-10-v2.png) ] .pull-right[ ![](img/3d-pie-20-v2.png) ] --- # Much worse ### Unnecessary 3D .pull-left[ ![](img/3d-pie-40-v2.png) ] .pull-right[ ![](img/3d-pie-80-v2.png) ] --- # Horrid example ### Used relatively regularly ![](img/3d_bar.png) --- # Pie charts ### Especially w/lots of categories ![](https://serialmentor.com/dataviz/visualizing_proportions_files/figure-html/marketshare-pies-1.png) --- # Alternative representation ![](https://serialmentor.com/dataviz/visualizing_proportions_files/figure-html/marketshare-side-by-side-1.png) --- # A case for pie charts * `\(n\)` categories low, * differences are relatively large * familiar for some audiences ![](index_files/figure-html/pie-1.png) --- # The anatomy of a pie chart Pie charts are just stacked bar charts with a radial coordinate system ![](index_files/figure-html/stacked_bars_nopie-1.png) --- # Horizontal ![](index_files/figure-html/horiz_stacked-1.png) --- # My preference ![](index_files/figure-html/dodged_bars-1.png)![](index_files/figure-html/dodged_bars-2.png) --- # Dual axes * Exception: if second axis is a direct transformation of the first ![](img/dual_axes.png) .footnote[See many examples [here](http://www.tylervigen.com/spurious-correlations) --- # Truncated axes ![](img/truncated_axes.png) --- class: middle ![](img/truncated_axes2.png) --- # Not always a bad thing > It is tempting to lay down inflexible rules about what to do in terms of producing your graphs, and to dismiss people who don’t follow them as producing junk charts or lying with statistics. But being honest with your data is a bigger problem than can be solved by rules of thumb about making graphs. In this case there is a moderate level of agreement that bar charts should generally include a zero baseline (or equivalent) given that bars encode their variables as lengths. But it would be a mistake to think that a dot plot was by the same token deliberately misleading, just because it kept itself to the range of the data instead. --- class: middle ![](http://socviz.co/dataviz-pdfl_files/figure-html4/ch-01-law-enrollments-1.png) --- class: middle ![](http://socviz.co/dataviz-pdfl_files/figure-html4/ch-01-law-enrollments-2.png) --- # Scaling issues ![](img/area_size.png) --- class: middle center # Poor binning choices ![](img/poor_binning.png) --- class: inverse-blue middle # Conclusions ## Practical takeaways to make better visualizations --- 1. Avoid line drawings 2. Sort bar charts in ascending/descending order as long as the other axis does not have implicit meaning 3. Consider dropping legends and using annotations, when possible 4. Use color to your advantage, but be sensitive to color-blindness, and use the right kind of palette 5. Consider double-encoding data (shapes and color) 6. Make your labels bigger! .gray[Didn't talk about this one much but it's super common and really important] --- # Some things to avoid * Essentially never + Use dual axes (produce separate plots instead) + Use 3D unnecessarily * Be wary of + Truncated axes + Pie charts (particularly with lots of categories) --- class: inverse-green middle # Thanks! ## Questions? <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="height:1em;position:relative;display:inline-block;top:.1em;" xmlns="http://www.w3.org/2000/svg"> <path d="M23 3a10.9 10.9 0 0 1-3.14 1.53 4.48 4.48 0 0 0-7.86 3v1A10.66 10.66 0 0 1 3 4s-4 9 5 13a11.64 11.64 0 0 1-7 2c9 5 20 0 20-11.5a4.5 4.5 0 0 0-.08-.83A7.72 7.72 0 0 0 23 3z"></path></svg> [@datalorax_](https://twitter.com/datalorax_) <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="height:1em;position:relative;display:inline-block;top:.1em;" xmlns="http://www.w3.org/2000/svg"> <path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"></path></svg> [@datalorax](https://github.com/datalorax) <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="height:1em;position:relative;display:inline-block;top:.1em;" xmlns="http://www.w3.org/2000/svg"> <circle cx="12" cy="12" r="10"></circle> <line x1="2" y1="12" x2="22" y2="12"></line> <path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"></path></svg> [website](www.datalorax.com) <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="height:1em;position:relative;display:inline-block;top:.1em;" xmlns="http://www.w3.org/2000/svg"> <path d="M4 4h16c1.1 0 2 .9 2 2v12c0 1.1-.9 2-2 2H4c-1.1 0-2-.9-2-2V6c0-1.1.9-2 2-2z"></path> <polyline points="22,6 12,13 2,6"></polyline></svg> [daniela@uoregon.edu](mailto:daniela@uoregon.edu)


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Lab 1: functions
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Tricentra Concepts
The Transformatively Translated Network
"Caterpillars transform into a cacoon and understand patience, eventually breaking away as the moth"
Inclusive, Volunteer, Contributional Model
Maintain the GreyNet and it's Discussions
Utilizing 2 IPv6 Addresses connected through one IPv4 Address or 32 Bit Block, an IPv9 Addressing Scheme can be created
DH/DL Algorithm, exchange Mac Addresses forming a Mac Address with a NON (Non Oppresive Niveau) to create two new Static IPv6 Addresses to form an IPv9 connection, dependent on the 32 Bit Block (Create InterLANs this way)
Creates the ability to host a Public WhiteNet IPv4 Node and perform GreyNet Transactions, while still being in control of our data
This would be called a Mesh Transaction
Otherwise, utilize the 32 Bit Block to perform GreyNet Transfers, Connections, or Transactions
Scanning internet to find the an Efficient, Safe, and Secure Route
For Continued Discussion of GreyNet Concepts Please Visit
simbols.io.
One Dynamic IPv9 Address, One Single Node, One Mesh.
Thank you for your contributions to Tricentra


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{% extends "base.html" %} {% block title %} Wellbeing | Health Insurance Results {% endblock title %} {% block content %}
*Our model is showing this data without any taxes and GST included, as said this is the TRUE value of your insurance. Our model has an accuracy of 85%. The data the model was trained on was United States Health Insurance Data


Render an index section to Markdown
protected function renderPart(
string $title,
keyset<string> $names,
callable $get_path,
): ?string;
string $title
the title of the section - e.g. 'Classes'keyset<string> $names
the names of all the definitions that belong in this sectioncallable $get_path
a callable that takes a name from $names
and returns
null
if a path can't be found, otherwise returns a path suitable for
linking to for the specified name.string
- Markdown


{% extends "base.html" %} {% load quantity %} {% load item_views %} {% block pagetitle %}Confirm order (alternate payment){% endblock %} {% block breadcrumbs %}
Please check the following order details carefully before continuing.
Before proceeding to pay with alternate payment methods, please enter your billing details to help us track your order.
Note that for immediate publishing (subject to approval) we recommend payment by credit card.


This is a gentle introduction to writing GPS-aware applications
— or, How I Stopped Worrying And Learned To Love Spherical
Trigonometry. It will explain the capabilities and limitations of GPS
hardware and the gpsd
software that you need to know about when
writing location-aware applications.
We'll go from general to specific, beginning with an overview of how
GPS works and ending with architectural suggestions about how to use
gpsd
to make your application location-aware.
First, the basics of how GPS works. It depends on the fact that satellite orbits can be modelled accurately. A GPS receiver is a combination of a radio receiver and computer that receives timing signals and orbit information from GPS satellites, and in particular can compute exactly where each satellite will be at any given time with respect to the fixed Earth. (For those of you who enjoy such details, what they actually predict is each satellite's position with respect to a coordinate system known as WGS84 which closely fits the mean sea level of Earth.)
Although the term GPS properly refers only to the system operated by the United States Air Force (also called NAVSTAR, it is sometimes used loosely to refer to similar systems. We use the accepted term Global Navigation Satellite System (GNSS) to refer to all satellite-based navigation systems. The main systems other than GPS are GLONASS (Russia), Galileo (EU) and BeidDou (China). Because the gpsd project originated when GPS was the overwhelmingly dominant paradigm, many parts of the documentation and code refer to GPS when GNSS is more accurate. Our intent is to adjust the documentation and to leave the code alone because there is a real cost to changing code.
This paragraph and much of the following text is specific to GPS/NAVSTAR, but the principles largely apply to other systems. There are presently about 30 dedicated Navstar satellites (full coverage can be achieved with 24), twenty thousand km (twelve thousand miles), up in high-inclination orbits, so that each one's trajectory wraps around the Earth like a ball of yarn as the planet spins beneath them. The inclinations are tuned to guarantee that about twelve will be visible at any given time from anywhere on Earth (coverage falls off a little at high latitudes).
You can look at a very nifty simulation of Navstar satellite orbits. (Requires Java, also includes GLONASS, the Russian military equivalent).
Each satellite broadcasts identification pulses, each one including the clock time it was sent. A GPS receiver, picking up these pulses, and knowing the speed of light, can recover its 4-dimensional location (Latitude, Longitude, Altitude, and Time). Ideally, you would need to solve four simultaneous equations with the four unknowns, so would need four visible satellites. This is known as a 3D fix. Computing the GPS's exact position with respect to the satellites becomes a relatively simple if tedious exercise in spherical trigonometry (which, fortunately, the GPS's firmware does for you). Note that the GPS receiver does not need to know its own time or location to begin with.
An excellent introduction is available at: How GPS Receivers Work, see page 4 in particular.
That's the theory. In practice, the system has important limits. Anything, natural or artificial, that messes with the signal timings will degrade the accuracy of your position fix. Until it was abolished by Presidential decree in 2000, the most important limit was artificial, the so-called 'Selective Availability' feature. The satellites were programmed to introduce patterned timing jitter into the signals. The U.S. military knew the pattern, but nobody else did (or, at least, nobody who was admitting it).
In Sep 2007 the U.S. government announced that the future generation of GPS satellites, known as GPS III, will be without the SA feature. Doing this will make the policy decision of 2000 permanent. The important limits are on accuracy are now due to physics. One is a variable amount of signal lag produced as the GPS signals pass through the ionosphere and troposphere, which partly refracts radio waves. This can be largely compensated for by a technique called "Differential GPS" (DGPS). Ground-based reference stations are established in well-surveyed locations, and compare measured ranges (pseudoranges to be precise) with their calculated values. These errors account for unknown propagation delays, clock errors, and any other unmodeled errors. The reference stations can then tell nearby GPS receivers the required corrections, which are then applied to observed pseudoranges before computing a position. This information may be broadcast via radio (called "Ground Based Augmentation Systems"), or via satellites (called "Space Based Augmentation Systems"). See DGPS and friends for details on how this works.
In practice, the most important limit on accuracy is the actual visibility of satellites. A timing signal has to be fairly strong and clear, with little noise or distortion, before a GPS can use it. The frequencies GPS has to use in order to punch through the ionosphere with minimal attenuation (unlike conventional radio and TV signals) don't cope well with solid barriers. Thus, GPS tends to work poorly if at all inside buildings. Tall trees and tall buildings can mess it up, blocking line of sight to satellites that aren't nearly directly overhead.
Accuracy also falls off a bit when you're in motion. This isn't a physical effect, but mostly due to the fact that computation always takes a little time; by the time the GPS figures out where you are, you're not there any more.
Another limit, implicit in the geometry, is that GPS is relatively poor at getting your precise altitude. When you can get a signal lock on four satellites, a modern GPS will give you longitude and latitude within about 10 meters or yards, down to 2 with DGPS correction. Vertical uncertainty will be much higher, as much as fifty meters.
People who really obsess about GPS accuracy quote it not as a single figure but as a probability-of-error: e.g., you're within 10 meters 95% of the time and 2 meters 50% of the time.
DGPS requires out-of-band communication with a service providing GPS signal correction information to make the GPS positioning more accurate. There are two ways of communicating this in real-time, GBAS and SBAS. An example of GBAS is the National Differential GPS system (NDGPS) in the US, transmitting corrections around 300 kHz.  A disadvantage of these systems is that consumer GPSes do not listen on these frequencies, so this information is not really available to them. Another example is the system being installed at airports worldwide, to enable precision landing. Coverage for both these system types is between 30km and 40km.
Examples of SBAS include WAAS (US), EGNOS (Europe), GAGAN (India), and MSAS and QZSS (Japan). These systems are almost identical in their operation. They provide DGPS corrections with in-band communication — geo-stationary satellites broadcasting GPS signal correction information on the same frequency and format as the GPS satellites. The system makes GPSes more accurate, and adds integrity checks making it possible to detect when the GPS location is totally wrong. Unlike GBAS, your GPS will generally use these systems automatically whenever it can see the satellites.
SBAS data starts out as normal DGPS stations observing the errors. That data gets processed and interpolated into a grid which models ionospheric and tropospheric delay over the SBAS coverage area. The GPSes then interpolate into that grid to get an estimate of lag for their current position. Accuracy will vary based on how close a GPS is to a DGPS station.
SBAS systems have wider coverage areas than GBAS, but still not worldwide; as can be seen from the list above, each country has a system covering its area of interest. See SBAS Service Areas.
Note that DGPS improves accuracy in both position and time, the two are intrinsically related.
From a software designer's point of view, a GPS receiver is an oracle that tells you its location whenever it can get line-of-sight to four satellites. Our next topic is how it gets that information to a computer in a form your application can use.
Almost all GPSes are serial devices that use either RS-232C or USB to communicate with the host machine. Most track a standard called NMEA 0183 which prescribes both electrical signal levels and a data encoding. The protocol is bidirectional, but designed in the expectation that most of the traffic will be GPS-to-computer, with commands going in the computer-to-GPS direction rare.
The modern trend in GPSes is away from RS232C and towards USB. USB
GPSes keep the NMEA data protocol but discard the NMEA link layer. Under
Linux, USB GPSes use the usbserial module and look like serial ports.
Part of gpsd
's job is to hide this stuff; applications don't have
to be aware of NMEA or the link layer, they just query gpsd
for
information.
The basic design of the NMEA data protocol is very simple. The GPS throws ASCII text lines called 'sentences', each beginning with a '$' and terminated by CR/LF, at the host machine. Usually the host gets one update a second, but the GPS has the option of sending more frequently when it detects a change of position or velocity or status. The standard prescribes a serial encoding at 4800bps, 8 bits, one stop bit, no parity; although most consumer receivers use 9600bps.
Here are some sample NMEA sentences:
$GPGGA,212734,4740.0569,N,12219.6612,W,1,08,74.00,73.9,M,638.000000,M,,*6D
$GPRMC,212734,A,4740.0569,N,12219.6612,W,0.000000,0.000000,020403,18.936255,E*60
$GPGSA,A,3,17,06,23,15,16,18,10,30,,,,,152.00,74.00,133.00*3F
$GPGGA,212735,4740.0569,N,12219.6612,W,1,08,74.00,74.1,M,638.000000,M,,*63
$GPRMC,212735,A,4740.0569,N,12219.6612,W,0.000000,0.000000,020403,18.936255,E*61
Each sentence consists of a comma-separated fields. The first field is always a message type and the last a checksum that can be used to check for data corruption. Interpreting NMEA sentences is not complicated. Modulo a few glitches like 2-digit year numbers, the NMEA standard does a pretty good job of specifying a message set for GPSes that want to convey data to computers.
More good news: you should never have to deal with this level
— gpsd
's purpose is to insulate you from it.
That's the good news. Now for the bad news, which comes in five pieces:
First, the NMEA standard does not specify a command repertoire for the opposite direction. Thus, functions like changing the GPS's update frequency or selecting the subset of sentences for it to send are often not supported at all, and when they are it's all by sentences that are vendor-specific.
This used to be more of a problem than it is today. Early GPSes tended to have elaborate facilities for accepting lists of waypoints and sending back course information to help you navigate to them. Modern high-end units still do, but the GPSes designed for connecting to computers are increasingly designed on the assumption that the host computer will do all the waypoint geometry itself and the GPSes only job is to deliver periodic position and velocity readings. Thus, they tend to have no control codes at all.
Second, vendors don't stick to the NMEA-prescribed 4800bps data rate. This is understandable; 4800 is very slow by today's standards, and by boosting bits per second they can deliver information that's fresher by a few milliseconds (which might make a difference if, say, you're using a GPS-enabled autopilot to land an aircraft). Some GPSes feature data rates upwards of 38400bps. However, this actually does little good unless the application polls the GPS at a rate faster than 1Hz rather than waiting for it, as most GPS receivers cannot be told to ship updates faster than once per second — and the polling commands (when they exist at all) are proprietary. And the fact that GPSes don't have a single data rate graven in stone brings back all the well-known baud-mismatch configuration problems we thought we'd left behind in the 1980s.
The third problem with NMEA is that it's not universal. A decreasing but still significant percentage of GPSes use proprietary binary protocols. For example, there was a GPS chipset called "Zodiac" made by Rockwell International, that used to be very widely OEMed by GPS makers. It spoke NMEA, but had irritating limitations in that mode like not being able to accept DGPS corrections. It preferred a tight-packed binary protocol. There haven't been any new Zodiac-based designs in a few years, but a lot of Zodiac-based GPSes (like the DeLorme EarthMates made before they switched over to a SiRF chipset in 2003) are still around.
2004's equivalent of the Zodiac is the SiRF-II chipset, which seems to be nearly ubiquitous in inexpensive GPS receivers. It too speaks a binary protocol, but only if you ask it to; it's fully capable in NMEA mode. Which is where it boots up. The idea seems to be that you can switch to binary to improve your bits-per-second in latency-critical applications.
The fourth problem with NMEA is that it doesn't deliver all the information that the GPS has in one atomic message. In particular, you can't get altitude (delivered in the GPGGA sentence only) and speed (delivered in GPRMC and GPVTG) at the same time. This is annoying; ideally, you want your position/velocity/time oracle to deliver one observation tuple conveying all seven degrees of freedom (t, x, y, z, vx, vy, vz) and their error estimates.
The final irritation about NMEA is that it's expensive to buy a
description. The National Marine Electronics Association is a trade group of
electronics dealers, and they want $250 for a copy of their
standard. Numerous Web sources have reverse-engineered or abstracted
bits of it; the NMEA page piously warns that In most cases they are
very old versions or incorrect interpretations and should not be
depended upon for accuracy,
then mutters darkly about copyright
violations.
Here is the best compendium I know of. I
have never seen a copy of the official NMEA standard. Fortunately, it
isn't necessary for even gpsd
developers to know most of
it, since most modern GPS receivers only emit about a half-dozen of the
eighty or so NMEA sentences. RMC, GGA, GSA, GSV (and now possibly
GBS) are all you are ever likely to need to know about.
After you've read about those sentences, it can be instructive to
run gpsd
in a mode something like this:
./gpsd -N -n -D 2 /dev/ttyUSB0
Watching the output for thirty seconds or so will give you a good feel for what your GPS has to say, and how often it says it.
If a GPS receiver has to figure out its position without outside assistance, it is said to be in autonomous mode.
The time required for a GPS to get a fix (Time To First Fix (TTFF)) can vary from under 15 seconds up to just under 30 minutes (actually, 29 plus calculation time). The main factors affecting this latency are (a) whether it has an almanac available, (b) whether it has satellite ephemerides available, and (c) whether it has recent fix available. Of course the quality of signal at your location matters as well.
If a GPS has not been on for several months, then it has no current almanac available. It was to wait to download one before it can generate a fix. This can take just under 15 mins. This is sometimes called an cold start.
While the almanac download takes 15 minutes, you have to be there for the start of it, otherwise you have to wait for the next cycle. So if you are unlucky and just miss the start of one, it could take just under 29 minutes to obtain, and on average closer to 22 min.
If a GPS has not been on for a day (four to six hours) then it has a valid almanac but no valid satellite ephemerides, and must download at least four before it can generate an accurate fix. This is sometimes called a warm start. Each satellite has its own ephemeris that must be downloaded if a current copy is not fresh.
GPSes store ephemerides is non-volatile memory, either internal flash storage or battery-backed SRAM. Thus, a GPS does not need to have been on continuously to have ephemerides available, but it will consider old data to be invalid after a while. In normal operation the GPS occasionally gets refreshes of ephemeris and almanac data from the satellites it's listening to.
For both an cold start and a warm start, if the sat signal is momentarily lost, the process may have to restart and you'll get more delay.
If a GPS has been on recently, in the current location, then this is sometimes called hot start and an accurate fix can be generated quite quickly. This will usually be a few seconds for a modern GPS.
If the GPS receiver can download the almanac or ephemerides, it can proceed quickly to a hot start. This is uncommon for GPSes that are connected to laptops, but is usual for GPS in mbile phones. A-GPS is variously expanded as Augmented, Assisted, or Aided.
Many GPSes are designed to power down or go to standby mode when DTR or its USB equivalent goes low (under Linux, this happens when you close the port). An important category of exceptions is USB SiRF-II GPSes; these don't seem to power down on DTR low, but instead go to a low-power standby mode for the 8/10s of every second that they're not shipping packets.
Powering down on DTR low can be a valuable power-saving measure if the GPS is (say) running off of laptop batteries in a navigation or wardriving system. Thus, you don't want to keep your GPS device open when you don't actually need information from it.
Unfortunately, this rule can collide with one of the persistent problems with GPSes — though they can update a previous fix quickly (in 0.1sec or less), they can take a long time to acquire a first fix when they power up.
When a GPS receiver boots up, it has to suck radio waves for a while just to figure out what satellites might be available in line of sight. The speed at which it can do this is inversely proportional to the number of GPS channels it can sample simultaneously. Older one- or two-channel units could take several minutes at this. In 2004, even low-end GPS receivers have twelve channels and can thus cock a separate ear for as many satellites as they're ever likely to see. Even so, it's not uncommon for them to take 30 or 40 seconds after a cold boot to get a fix.
One of the things gpsd
does for applications is handle this
power-management issue. When no clients are active, gpsd
will
automatically close the GPS device, re-opening it only when another
client connects to the daemon.
For more details on programming with gpsd
, see the
FAQ.


public class Slim
extends java.lang.Object
| Constructor and Description |
|---|
Slim() |
| Modifier and Type | Method and Description |
|---|---|
static android.view.View |
createLayout(android.content.Context context,
java.lang.Object obj)
Helper method to create a layout within an Object annotated with the
@Layout annotation. |
static android.view.View |
createLayout(android.content.Context context,
java.lang.Object obj,
android.view.ViewGroup parent)
Helper method to create a layout within an Object annotated with the
@Layout annotation. |
static void |
inject(Fragment fragment)
Shorthand to inject callbacks and extras within a Fragment.
|
static void |
injectCallbacks(Fragment fragment)
Inject callback interfaces within a Fragment.
|
static void |
injectCallbacks(java.lang.Object child,
java.lang.Object parent)
Inject callback interfaces within an Object.
|
static void |
injectCallbacksMethods(Fragment fragment)
Inject the no-arg methods that have a
@CallbackClick annotation in a @Callback
interface with click listeners. |
static void |
injectExtras(android.os.Bundle extras,
java.lang.Object obj)
Assigns class variables found in
obj annotated with @Extra
with their assigned extras within the extras Bundle. |
public static void inject(Fragment fragment)
onCreate
.fragment
- the Fragment to injectpublic static void injectExtras(android.os.Bundle extras, java.lang.Object obj)
Assigns class variables found in obj
annotated with @Extra
with their assigned extras within the extras
Bundle.
Recommended to be called during onCreate()
in an Activity or Fragment.
extras
- the Bundle to retrieve extras fromobj
- the class with the annotated extraspublic static void injectCallbacks(Fragment fragment)
fragment
- the fragment to injectpublic static void injectCallbacks(java.lang.Object child, java.lang.Object parent)
child
- the Object holding the callback interface implementationparent
- the Object implementing the callback interfacepublic static void injectCallbacksMethods(Fragment fragment)
@CallbackClick
annotation in a @Callback
interface with click listeners. This only works for methods that have zero arguments, as annotations do not support
Object arguments.fragment
- the Fragment to injectpublic static android.view.View createLayout(android.content.Context context, java.lang.Object obj)
@Layout
annotation.context
- an Activity Contextobj
- the Object with the @Layout
annotationpublic static android.view.View createLayout(android.content.Context context, java.lang.Object obj, android.view.ViewGroup parent)
@Layout
annotation.context
- an Activity Contextobj
- the Object with the @Layout
annotationparent
- The view's parent, used for inflating layout attributes
(does not automatically attach layout to the parent)


TRANSLATE
TRANSLATE
Saint-Jean-sur-Richelieu, Quebec
Saint-Jean-sur-Richelieu is a city in eastern Montérégie in the Canadian province of Quebec, about 40 kilometres southeast of Montreal. It is situated on the west bank of the Richelieu River at the northernmost navigable point of Lake Champlain. As of 2016 the population of Saint-Jean-Sur-Richelieu was 95,114.


--- layout: post title: "Our visit with Lady Bowen" subtitle: "New Zealand 2019" date: 2019-02-11 00:00:00 -0500 categories: [Travels] tags: [New Zealand] background: 'https://hwmckenzie.github.io/img/posts/nz2019/header.jpg' ---
A little behind with the blog-writing. We're currently sitting outside at the Flatwhite Cafe on Waihi beach, watching waves and drinking coffee.
On our second day in New Zealand we left our Auckland Airbnb to head to Thames. This was exciting as it was my first properly rested drive in New Zealand. Left handed driving can make for some anxious times, but so far so good. We've found it the most difficult crossing the street as pedestrians actually - often looking the wrong way at the wrong time, or thinking we've escaped the danger of oncoming traffic when we haven't.
We stopped just outside of Auckland at the Clevedon Co-op for coffee and marvelled at the price of peaches ($3 / peach). Clevedon seemed like a legitimate farming community, judging by the topics of conversation and the footwear.
Our next targetted destination was the Miranda Shorebird Centre where we were hoping to see some unique brids. On the way we stopped at a small sampling of beaches; not really lay-in-the-sand type beaches, but nice nonetheless. Being a Saturday (or I assume because) there were lots of families out fishing and wading around in water.
Our arrival at the Bird sanctuary was poorly timed, as the tide had gone out far enough that the birds couldn't easily be seen any more. We opted to drive to the bird "blind" rather than do the hour long hike. Luckily at the bird blind was a woman with what essentially looked like a telescope, and she was pointing out various birds and telling us how land reclaimation along their migration path was leading to considerable drops in population. A picture I managed to get through her telescope:
We were pleased/displeased to discover that there are Canadian Geese in New Zealand! Rotten Europeans brought them over for something to hunt, and turned out the geese liked the place. Related interesting fact - the largest wild predator in New Zealand is the possum, which was also introduced.
Our bed and breakfast in Thames was in an old bar (1915?) that was refitted to be a B&B. So far no places we've been have had air conditioning, and this place was where I was missing it the most. Having said that, there were several very nice outdoor areas we could lounge in there.
We walked along the ocean on a trail for an hour or so, then cut back into town for the walk back to look for food. We settled on "Mad Burger" which was exceptionally good. Prices in New Zealand are weird - we got delicious fries wrapped in paper about the size of a 3-ring binder for $3NZD (which is worth less than CAD), but a single peach is $3 and a 12 pack of Dr. Pepper is $16.
The next morning we got up early for a walk, then got ready to go on our canyon adventure. We're still waiting to get the pictures from that, so there should be more on that soon. The gist of it is that it was a full day of hiking up a mountain and then repelling/jumping/zip-lining/abseiling down the canyon. All of this was in a wetsuit; I was full-body pruney by the time I was able to peel out of it. We had lunch half-way down, and burgers at the end. It was a great time.
We got back to our B&B, wandered the town failing to find ice cream, then called it a day!
Chris & Hannah


Situated just 2km away from the heart of the city, Hussain Sagar is one of the most popular tourist places in Hyderabad. The lake connects two parts of the city (Secunderabad and Hyderabad) to each other. The largest artificial lake in Asia, Hussain Sagar lake was excavated in 1562 AD during the reign of Ibrahim Quli Qutub Shah. Built on the tributary of River Musi, the lake has been named after Hussain Shah Wali. Hussain Sagar Lake was initially to build to cater to the irrigation needs and other water needs of the city. Until the year of 1930, it was used for the same purpose.
Having been bordered by Indira Park in the east, Sanjeevaiah Park in the north and Lumbini Park in the south, the lake presents a setting quite rare to find in the middle of any city. There is also a bund on its banks, which was built to control the flow of water. This artificial lake now beautifies the city gracefully. Not just for beauty, it is also known for its historical connection. On the banks of this Hussain Sagar Lake the treaty between Mughals and Golconda was signed At the middle of the lake, you will find a huge statue of standing Lord Buddha which has height of 16 m and weighs almost 350 tonnes. Made up of white granite, the statue is on the ‘Rock of Gibraltar’. The lighting show at the statue is something that is worth watching. Along with this,there are almost 30 statues of various famous personalities around the lake as well.
A popular recreational spot, the Hussain Sagar Lake attracts visitors of all age groups. Whether a family picnic or outing with friends or your partner, this lake is visited by every Hyderabadi. Boating at the lake is quite enjoyable. There are various options of boating at Hussain Sagar Lake such as speed boats, motor boats, etc. Another major attraction of the lake is the 48 seater launch which also offer its guests with dinner as well as available for private parties if required. One can also do parasailing at Hussain Sagar Lake or water skiing, although the timings and availability of these activities do vary from time to time. Cruising at the lake makes the visit all the more enjoyable. Hussain Sagar lake also enjoy a good location. It is easily accessible from the rest of the city and well connected by local trains as well as buses, taxis and autos. And once you are here by the lake side, you can also go exploring other tourist places of Hyderabad. Birla Mandir, NTR garden are located quite close by. If interested you can club you visit to Hussain Sagar with Jalavihar waterpark, combining excitement of water games and soothing setting of lake for a perfect day outing.
You can visit the lake throughout the week; it is open on all days. Hussain Sagar lake timings are from 8 am to 10 pm. Even a simple long drive on the roads by the side of lake is also quite refreshing .


Quickly build an effective pricing table for your potential customers with this Bootstrap example. It’s built with default Bootstrap components and utilities with little customization.
Some quick example text to build on the card title and make up the bulk of the card's content.
Some quick example text to build on the card title and make up the bulk of the card's content.
Some quick example text to build on the card title and make up the bulk of the card's content.


ng2-file-drop samples
All small set of examples using ng2-file-drop to provide desktop file drag and drop functionality


{% extends "base2.html" %} {% block title %}Starfinder Weapon Generator{% endblock %} {% block description %}Random weapon generator to add fun balanced weapons to your starfinder game{% endblock %} {% block body %}
Generates balanced weapons for the Starfinder RPG with damage curves matched as closely as possible to the core rulebook weapon entries.


To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video


| Author | William Welch Copyright © 2009, all rights reserved. |
| Adapted-by | |
| Compiler | 2.4 |
a small CAN library compatible with CANopen
Cia DS 301 version 4.02
No dependency found
co_send(dword in cob_id, byte in data[8], byte in len)
co_decode_cob_id(dword in cob_id, byte out func, byte out node_id)
co_receive(dword out cob_id, byte out data[8], byte out len)
co_encode_cob_id(byte in func, byte in node_id, dword out cob_id)
co_send(dword in cob_id, byte in data[8], byte in len)
send standard 11-bit CANopen message FIXME: we are only using one of the TX buffers (3 are available) FIXME: handle timeout
co_decode_cob_id(dword in cob_id, byte out func, byte out node_id)
extract function code and node_id from 11-bit cob_id
co_receive(dword out cob_id, byte out data[8], byte out len)
receive standard 11-bit CANopen message FIXME: we are assuming rollover is set up from RXB0 to RXB1 FIXME: handle timeout
co_encode_cob_id(byte in func, byte in node_id, dword out cob_id)
format the COB-ID, which is a 'standard' 11-bit CAN identifier. the function code is upper 4 bits, the node_id is lower 7 bits.
| 16f819 | 16f819_canopen_mcp2515_txhb.jal |
| 18f2585 | 18f2585_can_monitor.jal |


DISSIPATIVE QUANTUM MECHANICS OF ELECTRONS IN NANOSTRUCTURES (A.D. Zaikin)
|
- Path Integrals in Quantum Mechanics. The concept of the effective action. Description of interaction with the quantum thermostat. The theory of functional Feynman-Vernon influence.
- Dissipation in quantum mechanics. Theory Kaldeyry-Leggetta. Semiclassical Langevin equation.
- Quantum tunneling with dissipation. The limits of weak and strong dissipation. Macroscopic quantum tunneling in Josephson contacts.
- The idea of macroscopic quantum coherence. Coherence and dissipation. Quantum dynamics of two-level systems with dissipation. The notion of qubits.
- Second quantization and coherent states. The functional integration of systems of fermions. Matsubaru temperature technique.
- Physical observables and Grin functions. Grin functions of nonequilibrium system. Functional integration in the Keldysh technique.
- Coulomb interaction of fermions. Transformation of the Hubbard-Stratonovich and the effective action of fermions in terms of Bose fields.
- Actioon of Ambegaokar-Ekern-Shen for tunneling contacts.
- Coulomb blockade, P(E)-theory. Quasi-charge. Instantons and weak Coulomb blockade.
- The nonlinear equation for the density matrix of interacting electrons. Effective action and the Pauli exclusion principle.
- Quantum corrections to the conductivity of disordered conductors. Weak localization.
- Electron-electron interaction and phase decoherence of electrons. Fundamental sequences of low temperature saturation of decoherence time.
- Scattering matrix. The Landauer formula, shot noise, third cumulant of current, full-counting statistics.
- Disordered conductors, σ-model. Fluctuations of the conductivity, the distribution of transmissivity.
- Scattering matrix method and electron-electron interaction in disordered conductors. Effective action for arbitrary scatterers. Example of point contacts.
- Coulomb corrections to the conductance and shot noise. Influence of electron-electron interaction on the higher correlators current, limits of low and high transparency. Communication of interaction effects and full-counting statistics.
- The effects of interactions in quantum dots. Systems of quantum dots as a general model of disordered conductors.
- Modern understanding of the ground state and low-temperature transport properties of disordered conductors.
REFERENCES
Principal:
- R. Feynman, A. Hibs, Quantum Mechanics and Path Integrals. M. Izd. Moscow University, 1998.
- U. Weiss, Quantum dissipative systems, World Scientific, Singapore, 1999.
- J.W. Negele, H. Orland , Quantum many-particle systems, Westview Press, Boulder , 1998.
MORE:
- G. Schön and A. Zaikin, Quantum coherent effects, phase transitions, and the dissipative dynamics of ultra small tunnel junctions. Physics Reports, vol 198 (1990), p. 237.
- D.S. Golubev, A.V. Galaktionov, and A.D. Zaikin, Electron transport and current fluctuations in short coherent conductors. Physical Review B, vol.72 (2005), p. 205417
- D.S. Golubev, A.D. Zaikin, and G. Schön, On low temperature dephasing by electron-electron interaction. Journal of Low Temperature Physics, vol. 126 (2002), p. 1355.
- D.S. Golubev and A.D. Zaikin, Weak localization in arrays of metallic quantum dots: Combined scattering matrix formalism and nonlinear σ-model, Physical Review B, vol. 74 (2006), p. 245329.
|
|


MemoryStatus()
Syntax
Result.q = MemoryStatus(Type)Description
Returns the specified memory type information.
Parameters
Type The type of memory to get. It can be one of the following value: #PB_System_TotalPhysical: the total amount of installed memory, in bytes #PB_System_FreePhysical : the available memory, in bytes #PB_System_TotalVirtual : the total virtual memory size, in bytes (Windows only) #PB_System_FreeVirtual : the available virtual memory size, in bytes (Windows only) #PB_System_TotalSwap : the total swap memory size, in bytes (Windows and Linux only) #PB_System_FreeSwap : the available swap memory size, in bytes (Windows and Linux only) #PB_System_PageSize : the memory page size, in bytes (usually 4KB).
Return value
Returns the specified memory type information.
Supported OS
All


The 55-year-old woman was knifed in her upper body, arms and head during the "brutal and unprovoked" attack in Moss Side, Manchester, on Wednesday afternoon.
The victim was home alone with the boy when she was attacked violently after answering her front door.
Such is the severity of her injuries that police are investigating it as attempted murder.
The victim is in a stable condition in hospital her grandson was uninjured.
Have you been affected by this story? Email<EMAIL_ADDRESS>Police are appealing for information to find her attacker who is described a black woman in her 20s.

She was carrying a large dark green bag and has a distinctive walk with her right foot facing outwards
Detective Inspector Mark Astbury, from Greater Manchester Police, said: “This was a brutal and unprovoked attack and we are currently treating it as a case of attempted murder.
“Undoubtedly this will cause concern among the local community and residents, but I want to stress that we are doing everything in our power to trace the woman responsible.
"This is a particularly unusual attack in that the victim was subjected to a violent assault within her own home and I must make it clear that we will not tolerate this kind of violence on our streets.
“The incident happened in the afternoon and as such I would expect that somebody may have seen something.
"Were you in the area at the time of the incident?
"Did you see anything that didn’t seem quite right? If so, please get in touch as a matter of urgency as even the smallest detail could prove absolutely vital whilst we continue our investigation.”
Anyone with information can contact police on 0161 856 4409, quoting incident number 2090 of 13/11/2019, or call Crimestoppers anonymously on 0800 555 111.


What data should be kept in the Redux state?
The types of data that applications typically deal with can be broadly divided into three categories.
Domain data
Data that the application needs to show, use, or modify.
Example: the list of todo items (fetched from the server).
Application state
Data that is specific to the application's behavior.
Example: todo items 5 and 8 are selected.
Example: the request to fetch the todo list is in progress.
UI state
Data that represents how the UI is currently displayed.
Example: the sidebar is open.
Avoid defining your state shape in terms of the UI component tree.
Define the state shape in terms of the domain data and application state.
{
domainData1 : {},
domainData2 : {},
appState1 : {},
appState2 : {},
ui : {
uiState1 : {},
uiState2 : {},
}
}
Normalize the data.
Why?
const blogPosts = [
{
id: 'post1',
author: { name: 'User One' },
body: '...',
comments: [
{ author: { name: 'User Two' }, comment: '...' },
{ author: { name: 'User Three' }, comment: '...' },
{ author: { name: 'User One' }, comment: '...' }
]
}
];
Data structure is complex.
Data is repeated.
Each type of data gets its own "table"
{
posts: { ... },
comments: { ... },
users: { ... }
}
Each "table" is an object. For each item, the item ID is the key and the value is item.
{
posts: {
entities: {
post1: { ... },
post2: { ... }
}
},
...
}
Item order is stored in an array containing the item IDs.
{
posts: {
entities: {
post1: { ... },
post2: { ... }
},
ids: ['post1', 'post2']
},
...
}
Related items are referenced by ID.
{
posts: {
entities: {
post1: { author: 'user1' }
}
},
users: {
entities: {
user1: { name: 'User One' }
}
}
}
Provides methods for performing operations against a single collection of a specific type.
addOne, addMany, addAll, removeOne, removeMany, removeAll, updateOne, updateMany
Interface: EntityState
interface EntityState<V> {
ids: string[];
entities: { [id: string]: V };
}
export interface User {
id: string;
name: string;
}
export interface State extends EntityState<User> {
// additional entity state properties
selectedUserId: number | null;
}
Interface: EntityAdapter
export const adapter: EntityAdapter<User> =
createEntityAdapter<User>();
If the store is like a database…
…selectors are like queries.
createSelector
createFeatureSelector
Example: Select a root property
import { createSelector, createFeatureSelector } from '@ngrx/store';
export interface FeatureState {
counter: number;
}
export interface AppState {
feature: FeatureState;
}
export const selectFeature =
(state: AppState) => state.feature;
// or we could use createFeatureSelector
export const selectFeature =
createFeatureSelector('feature');
Example: Compose multiple selectors
export const selectFeatureCount =
createSelector(
selectFeature,
(state: FeatureState) => state.counter
);
Example: Compute data
const selectItems = state => state.items;
const selectTotal = createSelector(selectItems,
(items) => items.reduce((acc, item) => acc + item.value, 0));
const state = {
items: [
{ name: 'apple', value: 1.20 },
{ name: 'orange', value: 0.95 }
]
};
selectTotal(state); // 2.15
Using a selector with the Store
import ( selectCount } from '../reducers/feature';
@Component({
selector: 'my-app',
template: `

Current Count: {{ counter | async }}

`
})
class MyAppComponent {
counter: Observable<number>;
constructor(private store: Store<AppState>) {
this.counter = store.select(selectCount);
}
}


Plan your Thanksgiving meal around these recalls in your kitchen
by Mykal Vincent(WAFB/Gray News) - Whether you’re hosting Thanksgiving festivities or have been tasked with bringing food to the pot luck, it’s time to check your pantry and fridge.
Federal health officials are warning people to avoid some foods due to a series of issues - from E. coli to lack of inspection.
Here are the foods to keep away from your holiday table.
Romaine lettuce
U.S. health officials on Friday told people to avoid romaine lettuce grown in Salinas, California, because of another food poisoning outbreak.
Officials urged Americans not to eat the leafy green if the label doesn't say where it was grown. They also urged supermarkets and restaurants not to serve or sell the lettuce, unless they're sure it was grown elsewhere.
The warning applies to all types of romaine from the Salinas region, including whole heads, hearts and pre-cut salad mixes.
"We're concerned this romaine could be in other products," said Laura Gieraltowski, lead investigator of the outbreak at the U.S. Centers for Disease Control and Prevention.
Officials said their investigation led to farms in Salinas and that they are looking for the source of E. coli tied to the illnesses. Salinas is a major growing region for romaine from around April to this time of year, when growing shifts south to Yuma, Arizona.
Raw pork products
In Illinois, a company is recalling more than a half-million pounds of pork products because they were not inspected.
The 515,000 pounds of raw pork items were produced and distributed in Illinois, the US Department of Agriculture's Food Safety and Inspection Service said. They were produced between November 25, 2017 to November 9, this year.
They include pork loin, pork back ribs and pork chops. The complete list of affected items can be found here.
Cottage cheese
More than 9,000 cases of Breakstone’s Cottage Cheese have been recalled due to the possible presence of pieces of red plastic and metal in the container.
The U.S. Food and Drug Administration (FDA) announced the recall Monday, Nov. 18. The company says the cheese is being recalled because there could be pieces of red plastic and metal in the container that may have gotten in there during production. Consumption of these pieces could cause injury to teeth, the mouth, throat, stomach, or intestinal tissue.
The company discovered the issue after a customer found a piece of red plastic in their cheese. Click here for details about exactly which products are being recalled.
Soybeans
Vitamin Cottage Natural Food Markets, Inc., a company based out of Lakewood, Colo., is recalling Natural Grocers brand 2-pound Organic Soybeans due to the potential presence of mold. Those who bought the soybeans are advised to not eat them and either throw them away or return them to the store where they bought them for a store credit or refund.
Click here for a store directory where the affected products were sold.
Cheese Nips
A recall has been issued for Cheese Nips due to the presence of yellow plastic pieces.
The U.S. Food and Drug Administration (FDA) announced the recall Wednesday, Nov. 20. Mondelez Global, LLC is recalling the 11 oz boxes of Cheese Nips due to the possible presence of small, food-grade, yellow plastic pieces that came from a dough scraper that was used in the production of some of the product. The company discovered the issue after some yellow pieces of plastic were found on the manufacturing equipment, the FDA says.
The recall is limited to these Cheese Nips. They were sold at stores nationwide.
Blackberries
An outbreak of hepatitis A in Indiana, Nebraska and Wisconsin has been potentially linked to blackberries from the Fresh Thyme chain of grocery stores, authorities say.
Federal health officials are investigating after people who fell ill reported consuming fresh blackberries from the chain based in Illinois.
Copyright 2019 WAFB via Gray News. All rights reserved.


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Hello my name is Daniel Dittberner, I enjoy activities such as Basketball, American Football, Woodworking, engineering, computer sciences, and hunting. If I could eliminate one thing on planet earth, I would eliminate peanut butter. I would do so mostly because peanut butter has no use, It has a horrible texture and taste, and the smell is horrific. My Favorite type of music is 70's to 90's Rock; consisting of the following artists, Aerosmith, Journey, Foriegner, etc...


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The P3DC point types are p3dc_PNT2, p3dc_PNT3, and p3dc_PNT4. They represent 1x2, 1x3 and 1x4 element matrices respectively. There are several functions defined that operate on these data structures however they are primarily implemented as #define statements in the p3dc.h include file.
The following functions are described in this document:
The defined functions are as follows.
p3dc_FLOAT scaleXX(var, scalar)
Where the value XX is one of P2, P3, or P4. This function multiplies a two, three, or four component vector respectively by a scalar value.
void interceptXX(first_endpoint, second_endpoint, dT, result_endpoint)
Again where the value of XX is one of P2, P3, or P4. This function computes the value of a point along a line segment using the value dT to determine the result endpoint. These functions are used in the clipping code when clipping polygons.
p3dc_FLOAT p3dc_dot_pnt3(vector_a, vector_b)
This function computes the dot product (scalar product) of two three element vectors. It is returned as a floating point value. Note that the statement
scaleP3(vec, 1/p3dc_dot_pnt3(vec, vec))
normalizes the vector to unit length.
void p3dc_diff_pnt3(vector_a, vector_b, result_vector)
This function computes the vector difference R = B - A. Effectively this stores in result a vector, then when added to A will give you B.
void p3dc_cross_pnt3(vector_a, vector_b, result_vector)
This function finds the cross product (vector product) of the vectors A and B. Mathematically this is written as R = A X B. This function is great for finding a plane normal if you have three points.


404: Uh Oh!
The page you tried to approach is not really approachable
Approachable IO is an organization committed to creating Approachable Open Source software development. The goal of Approachable IO is to create projects that allow developers of all experience levels to contribute to the project. Contributing to open source projects can be an intimidating endeavor, and Approachable IO is aiming to lower the complexity for those who wish to contribute to open source projects. Join us at Approachable IO today!


Rooted is a provider of fish produce such as vegetables,fruit nuts,and others that are directly harvested from our own see.


The short answer: Yes, although you may need a special cable depending on what type of input/output ports you’re working with.
All modern HDTVs have HDMI inputs—some older HDTVs have DVI inputs instead—and some have VGA inputs for “PC use.”
If your graphics card has an HDMI output, you’re good to go: Just use an HDMI cable to connect your PC to your HDTV.
If your graphics card only has DVI outputs, I suggest snagging a cheap HDMI-to-DVI cable and plugging it into your HDTV’s HDMI input.
Although some HDTVs (and some graphics cards) have VGA inputs/outputs, this is not the ideal choice—it’s an analog signal that will give you a far fuzzier, lower-resolution image than an HDMI or DVI signal.
tv Will it look good?
Maybe, but this depends on a number of factors, including what you want to use your HDTV monitor for. Most reasonably-priced HDTVs top out at 1080p, or 1920-by-1080 pixel resolution. But 4K/UHD, or 3840-by-2160 pixel resolution, is dropping price each generation. On a 15.6-inch laptop screen,
the Windows desktop at 1080p looks pretty darn good from a couple of feet away. On a 32-inch HDTV screen…not so much. Definitely have to consider a higher resolution.
What’s important here is pixel density, or the number of pixels packed into one square inch of the screen. A 15.6-inch laptop screen
has the same number of pixels as the 32-inch HDTV screen, but the laptop has a much higher pixel density (141.21ppi) than does the HDTV
(68.84ppi). Thus, the laptop’s screen will appear clearer, sharper, and more detailed than the HDTV’s screen when viewed from the same
distance. The importance of pixel density decreases with viewing distance; that’s why the iPhone’s “Retina” screen has a density of
326ppi, while the MacBook Pro’s “Retina” screen has a density of just 227ppi.
tv Is it worth it?
If you’re looking to get the best bang for your buck, an HDTV isn’t necessarily going to save you money over a monitor.
In fact, if you’re purchasing a new display, I recommend sticking with the tried-and-true computer monitor. For one thing,
smaller, cheaper HDTVs are typically 720p or lower featured 1080p resolution, not 4K, while similarly-priced monitors will almost always be at least 1440P or low end 4K.
So if you’re looking for something under 27 inches, an HDTV will probably be more expensive.
If you’re looking for something larger than 27 inches, remember that pixel density decreases significantly with every few
inches you gain, and there’s a reason HDTV-makers suggest sitting several feet away from their creations. If you need a display
that will multi-task as an up-close work/email display as well as movie/entertainment display, you’ll want something with a high
enough pixel density that text won’t be a pain to read. At this point, 4K/UHD will be your only option for a HDTV as a computer monitor.
tv 10 Best TV's to Consider
Series
Highlight
Sizes
Pro's
Con's
LG OLEDE6 series
The OLED TV technology so beloved of AV enthusiasts for the past few years is taken to bold new heights by LG's groundbreaking OLEDE6 series.
55-inch, 65-inch
Incredible black level response
Jaw-dropping ultra-thin design
Missing details in very bright areas
Various subtle picture noise issues
Samsung KS9500 range
As well as delivering some of the sharpest 4K pictures yet, the KS9500s also go further than any other TVs to maximise the impact of HDR
65-inch, 78-inch, 88-inch
Jaw-dropping, class-leading HDR pictures
Unexpectedly good sound
Curved screen won't suit all
Some backlight 'blooming' in dark scenes
Sony KD-75XD9405
When it comes to 4K, size matters. A point this 75-inch Sony monster rams home in emphatic style.
75-inch
Huge screen tips you into home cinema territory
Lovely picture quality
Android TV's interface is clunky
Yucky remote control
Panasonic DX802 range
A reasonably affordable TV that's able to do a truly convincing job with HDR as well as 4K.
50-inch, 58-inch
Good value
Bright, detailed pictures
Native contrast isn't the best
Some backlight issues
Samsung KS7000 range
The KS7000 delivers an HDR-friendly level of specification you just can't find elsewhere for the same sort of money.
49-inch, 55-inch, 60-inch
Aggressively priced
Good all-round picture quality
Some backlight clouding issues
No 3D
Panasonic DX902 series
Brand new LCD screen technology and stellar processing helps the DX902 range deliver spectacular 4K and HDR impact.
58-inch, 65-inch
Bright, contrast-rich pictures
Clever and usually effective local dimming technology
Chunky bodywork
Some motion blur
LG OLEDB6 Series
The OLEDB6 series is the most affordable way to get your hands on LG's 2016 OLED TV technology.
55-inch, 65-inch
Gorgeous, contrast-rich picture quality
Spectacularly thin design
Detail clipping in bright areas
Occasional brief colour noise
Philips 65PUS7601
Brilliant backlight controls make this surprisingly affordable Philips 4K TV one of the year's most pleasant surprises.
65-inch
Excellent backlight control
Great price for the picture quality on offer
Complicated picture set up
Android TV interface is clunky and impersonal
Sony XD9305 series
Sony's new Slim Backlight Drive technology helps the XD9305 series produce some of the most beautiful 4K and HDR pictures. Period.
55-inch, 65-inch
High contrast for an edge LED TV
Beautiful colour and detail performance
Some quite defined light 'blocks' with high contrast HDR content
Android TV interface isn't very friendly or slick
Panasonic DX750 range
An eye-catchingly affordable way to bag yourself outstanding 4K standard dynamic range and decent HDR pictures.


Snookes1516.github.io
Here at Investment Sense we are passionate about making your money work harder for you and helping you to make better financial decisions. So what do we offer.
View a comprehensive list of PolicyMap's GIS data sources. Our interactive software provides a visual representation of statistics over different geographic areas. Interactive investor is a low cost, award winning, online investment platform enabling you to easily manage shares, funds, SIPPs SIPP case study 1 InvestAcc Pension Administration. Interactive investor: low cost online trading investment. Property purchase with no existing pension providers; . If you would like to request a case study for a certain . When choosing a preferred SIPP partner Sipp property purchase case study NEOMIST. Whether you're a layman looking to understand your own transaction or a lawyer needing assistance with a client's conveyancing our step by step sale and purchase.
Sipp property purchase case study. Dentons Pension are experts at dealing with commercial property purchases, both full and part ownership, within a SIPP or SSAS in the UK and overseas without. SSAS and SIPP Commercial Property Purchase Specialists. Economic Research - Federal Reserve SIPP - CASE STUDY - PART PURCHASE OF PROPERTY. Glossary of research economics - econterms. Box and Cox (1964) developed the transformation. Estimation of any Box-Cox parameters is by maximum likelihood. Box and Cox (1964) offered an example in which. Archives and past articles from the Philadelphia Inquirer, Philadelphia Daily News, and Philly.com.
Professional Paraplanner Case study: SIPP property transfer. ‘Not a lot of farmers know that’- SIPPs - Farming.
Money: Personal finance news, advice information.
Latest news, expert advice and information on money. Pensions, property Is it mandatory that the recommendations from the Comprehensive Behavioral Health Assessment (CBHA) must be included in the child's Dentons Pensions SIPP and SSAS Case Studies. Port Manteaux Word Maker - OneLook. Example case study: Joint property purchase : Investment Sense. Sipp property purchase case study - authentic essays at competitive prices available here will turn your studying into pleasure Essays dissertations written. As the United States rapidly becomes both a more diverse and unequal nation, policymakers face the urgent challenge of confronting growing wealth
Port Manteaux churns out silly new words when you feed it an idea or two.  Professional Paraplanner Real life case study: Property.
Case study: SIPP property presents a case study on the issues that can be for a standard property purchase, because the existing SIPP provider. Preliminary versions of economic research. Did Consumers Want Less Debt? Consumer Credit Demand Versus Supply in the Wake of the 2008-2009 Financial Crisis. Property Purchase. Dan Hargreave, who works for a corporate events promotional company, has saved £500,000 in an NSS Solution SIPP, which Simple Property Purchase – for professional adviser use only – not for private clients Andrew is considering a purchase of a commercial property For those chasing FIRE I’m sure that the 4% Rule will be well known to most. In short it says in your first year of retirement you can ‘safely.
From simple to complex situations, browse our case studies to see how Dentons can manage every step of the pension life cycle. Further links to our product literature. Elaine Turtle, Director, DP Pensions, describes a situation where a client s proposed property purchase for his SIPP was hit by a legislative The Racial Wealth Gap: Why Policy Matters Demos. Improving the Safe Withdrawal Rate for UK Retirees Story.
John and Mary are 45 and now they have an appointment to meet with Welby Associates to consider their options. The SIPP option. Having conducted Question and Answers from FreeConveyancingAdvice.co.uk. FAQs - University of South Florida. Die PC-FAQ enthält Antworten zu vielen Fragen rund um den PC, sowie Erklärungen der häufigsten Computerbegriffe und ein Wörterbuch. There are many advantages to using a self invested pension scheme to purchase commercial property Establishing a SIPP with commercial property; Fee Case Study. Please note this case study is not based on real life events and is intended to demonstrate how a SIPP can be used in a specific scenario. Before such a transaction.


Having bought a mill without a DRO, many try to retrofit one to their equipment. This Mill in particular is quite small, which would make it hard to attach one. Also, i don't need a full DRO for my purposes currently. Thats what made me think about adding some simple measurement capability to 1 or 2 Axes of the Machine.
We need only the specs for T-Nuts of the correct size for the Mill. It uses M6 Hardware, so nothing special here. The Design can be adapted if you have a different T-Slot Size or your Indicator has a different shaft diameter. It's one of my most customizable projects.


My hovercraft costs $


Interfacing Erlang with the Outer World¶
Native Libraries¶
Note
This page was created between 2016 and 2018, more changes might have happened since.
There are plenty of different approaches on integrating NIFs written in other languages:
C¶
dryverl (license BSD)
C/C++ Generic Erlang Port Driver (license MIT)
C++¶
EPI (license LGPL)
eixx (license Apache2)
C/C++ Generic Erlang Port Driver (license MIT)
C++11 NIFPP (license Boost)
Lua¶
erlua
erlualib (license MIT)
Python¶
Ruby¶
ErlPort (see below in “Ports”)
PHP¶
Erlang Term Format (PHP) (MIT)
Rust¶
Rustler (license Apache, MIT)
Nim¶
nimler (MIT)
Javascript¶
Perl¶
Ports and Network¶
For the situations when you still need the speed and can tolerate some call latency over, but don’t want to risk crashing your node: choose interaction over network or a port.
CloudI, A private cloud engine (C/C++, Erlang/Elixir, Java, JavaScript/node.js, Perl, PHP, Python and Ruby)


I am a college student, developer & hackathon enthusiast in the Bay Area, and I am very passionate about Computer Science. I have participated in many hackathons, and I've won four of them so far, and then I even hosted my own, Teen Hackathon. I was the officer and webmaster of multiple tech clubs at my high school, and I have moderate experience in web development professionally with paying clients. I am currently looking for more professional work to engage myself with.
I have worked with many platforms, including:
HTML
CSS
JavaScript
JQuery
Ruby
Rails
PHP
MySQL
Java
Android
Latex
Ajax
JSON
C++
Python
.Net
You can contact me here.
Waffle is a location-based social app with which the user can share photos of his or her surroundings, and will pop up on the newsfeed of others in the area. Waffle ties the photos to that location for a period of 24 hours and displays in a real-time photo feed to all of your friends present in the area.
CoderAIcer is a webapp where the user can write AI to race a car through a track, dealing with turns, walls, the road, and other cars, etc. This gets competitive when people put their AI online in a match, so that multiple user-programmed AIs race against each other, and the best AI, the best programmer wins.
Trouvé is a webapp to share the location of anything, and find anything. Let's say you're hosting a garage sale or you found some great parking. Simply add that location to the master map on Trouvé, and anybody can access it to find that parking/garage sale, and you can use it to find anything else too!
Seekr is a webapp that pulls in 100,000 jobs from the Dice API, each with a physical location, and displays those jobs on a map; the jobs can be searched for by location and skill, and can be filtered for you top skills. It uses the Dice job skills to generate analytics for the user in a beautiful graphical format.
I am a college student, a self-motivated, dedicated & passionate developer, looking for an internship opportunity in Computer Science. I offer technical skill in programming along with youthfulness, determination, and Full-Stack expertise in mobile and web development, using Java, Android, HTML, CSS, JS, Ruby, Rails, PHP, Python, C++, MySQL & more.
Volunteer Tutor at Study Buddy Society for Math & Computer Science. Helped fellow students with their difficulties in mathematics and computer science.
Volunteer at the Library Tech Toolbar, communicated with library patrons about the new eBooks service to inform and facilitate shift to new eBooks on multiple platforms.
Regular attendee of hackathons, love the development focused environment there.
Class of 2015
Java Class
AP Computer Science Class
AP Calculus & AP Physics
Officer of MV Java Club
Officer of MV Mobile Dev Club
C++ Summer Course
Waffle is a location-based social application with which the user can share photos of his or her surroundings with others in the area.
CoderAIcer is an Application where the user can write competitive AI to race a car through a track to learn programming languages like Javascript.
Trouvéis a crowd sourced application where anybody shares locations of anything, so anybody can find anything from garage sales to parking.
Seekr is an application that pulls in a 100,000 jobs from Dice, and displays those jobs on a map;the jobs can be searched for by location and skill.
This website is for a school project;it uses a database created by me to present the interviews conducted by our class.
This static website is for a school club, the Monta Vista Mobile Game Development Club.
This static website is for a school club, the Monta Vista Java Club.
HTML 5, CSS 3
Javascript, JQuery
JSON
(Twitter) Bootstrap
Zurb Foundation
Firebase
ReactJS
Android, Java
Python
C++
Software Engineer at Facebook - He was my mentor at BeyondHacks and helped me greatly in making Trouvé.
I am currently looking for developer work, and I am available for internships and other work over the summer. If you have any questions or offers, please don't hesitate to contact me!
Please use any medium to contact me;email works best. Otherwise, phone or facebook is the best way to reach me.
©2014 Oindril Dutta.
All Rights Reserved.


hello world.
I’m Arthur Maydanuk.
Frontend developer & Designer.
I am 17 years old and I am a front engineer from Kiev. I describe myself as a passionate developer who loves to code, invent new things and the web platform in general.
In addition to work and study, I like to bring creativity to different areas of life. It helps me to learn a lot of new things, to grow not only as a developer, but also to be a good conversationalist.
skills.
I have a solid knowledge of HTML5, including semantic layout and BEM methodology.
I have a solid knowledge of CSS3 and SCSS. I can use animation.
I am learning vanilla JS, but I can already do a lot of things. In the future, I want to work with React.
projects.
contacts.
I am open to cooperation and will always be happy to answer your questions, share my experience or just have a chat.


This application was a project for my Introduction to Databases course (CSCC43). The purpose of this project was to develop an application, pertaining to a pizza delivery system, that provides a UI for ordering Pizzas and stores all the data in a MySQL database. A few of the objectives were as follows-
- Create a relational database design for how the data will be organized
-Implement the design by storing the data with the correct relations/dependencies in normalized databases
-Connect the database to the UI
Below are a couple of screenshots for the project:


start app and visit the page for end-user - If the temperature is above 27, the fan will be turned on, otherwise, it will be turned off.


Smart City Planner
Thumbnail Gallery
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{{image_name}}
{% endfor %}
Length of the road: {{l}} meter


City Collection
About us
Product
contact
w
Summer Dress
Summer Dress
Summer Dress
Our beatuful dresses
All
Category 1
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29
$
29
$
19
$
19
$


discover
albums
artists
genres
top tracks
free music
stations
downloads
purchased
favourites
history
featured playlist
create playlist
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Kerala
Hiphop Tamizha
Saree Ke Fall Sa
Nakash Aziz , Antara Mitra
Palat
Arijit Singh
Nashe Si Chadh Gayi
Arijit Singh
Janam Janam
Arijit Singh, Antara Mitra
Malare
Vijay Yesudas


Getting dressed for the premiere. So excited, I feel fluttery. 2/5/2009, 5:38:37 PM Favs: 0 Retweets: 0 link


Gateway
BOT
27-Jun-19 12:31 AM
[dscrd-hush] <dukeleto> on every full nodes hard drive
[dscrd-hush] <dukeleto> and yes, we have to come up with some reasonable max size file, or make the fees such that it can't be abused
[dscrd-hush] <dukeleto> and our blockchain does not grow to large in size
[dscrd-hush] <dukeleto> there is only 4MB per block
[dscrd-hush] <dukeleto> and 576 blocks per day
[dscrd-hush] <dukeleto> that is it
[dscrd-hush] <dukeleto> so a "fee market" may evolve at some point, if the Hush chain gets busy. We can also make more chains, or do various other things. They are good problems to have
[dscrd-hush] <dukeleto> You might pay more fees if you want your very important Hush memo to get to your biz partner right away, vs upload a large file that can wait until tomorrow @heguli97
[dscrd-hush] <dukeleto> the more fees you pay, the more likely miners will add it to a block, if blocks are full
[dscrd-hush] <Oso> Nice stuff hush
[dscrd-hush] <dukeleto> @Oso thanks!
[dscrd-hush] <dukeleto> !tip @ITM 25 hush (for all your work verifying TradeSatoshi stuff )
[dscrd-hush] <Discordtip> @dukeleto sent @ITM 25.00 HUSH (≈ $2.08).
[dscrd-hush] <dukeleto> !tip a random user a coffee
[dscrd-hush] <dukeleto> !tip a random user a cup of coffee
[dscrd-hush] <dukeleto> !tip a random user a cup of coffee
[dscrd-hush] <dukeleto> i think there is some weird bug, that used to work
[dscrd-hush] <dukeleto> !mining
[dscrd-hush] <dukeleto> !tip a random person 5 hush
[dscrd-hush] <Discordtip> @dukeleto sent @DD 5.00 HUSH (≈ $0.41).
[dscrd-hush] <dukeleto> @DD enjoy
[dscrd-hush] <ComputerGenie - MineHush.com> !tip a random person a cup of coffee
[dscrd-hush] <dukeleto> !tip @Heno1974 25 hush (for being awesome)
[dscrd-hush] <Discordtip> :money_mouth: @dukeleto sent @Heno1974 25.00 HUSH (≈ $2.08).
[dscrd-hush] <dukeleto> !tip @heguli97 5 hush (for posting SilentDragon screenshot)
[dscrd-hush] <Discordtip> @dukeleto sent @heguli97 5.00 HUSH (≈ $0.41).
[dscrd-hush] <ComputerGenie - MineHush.com> !tip a random person a coffee
[dscrd-hush] <Discordtip> @ComputerGenie - MineHush.com sent @Draeth 1 cup of coffee (= $1.50 = 18.00 HUSH).
[dscrd-hush] <ComputerGenie - MineHush.com> rtfm :troll:
[dscrd-hush] <Draeth (PhysicalCryptoCoins.com)> haha thanks!
[dscrd-hush] <ComputerGenie - MineHush.com> Starbucks
[dscrd-hush] <ComputerGenie - MineHush.com> I guess
[dscrd-hush] <ComputerGenie - MineHush.com>
[dscrd-hush] <Draeth (PhysicalCryptoCoins.com)> lol
[dscrd-hush] <dukeleto> person != user, duh
[dscrd-hush] <ComputerGenie - MineHush.com> and not "cup of"
[dscrd-hush] <ComputerGenie - MineHush.com> thing is awful picky
[dscrd-hush] <Oso> I'm not random
[dscrd-hush] <Oso> Mile away pick @ComputerGenie
[dscrd-hush] <ComputerGenie - MineHush.com> huh?
[dscrd-hush] <AkiraX> !tip @AkiraX the moon
[dscrd-hush] <franciscana23> :hush_dark:
[dscrd-hush] <franciscana23> Awesome community
[dscrd-hush] <AkiraX> Confused. Why would silent dragon have a mining function
[dscrd-hush] <AkiraX> No way you can cpu mine or GPU mine hush
[dscrd-hush] <azer95> Good Night
[dscrd-hush] <dukeleto> @AkiraX all full nodes can mine
[dscrd-hush] <dukeleto> and yes, you can CPU mine with Silent Dragon, but there is no GUI option for it
[dscrd-hush] <dukeleto> @AkiraX yes, you can CPU or GPU mine Hush, or even with your web browser, but none of them are even remotely profitable
[dscrd-hush] <AkiraX> Yeah. But I mean. What's the point.
[dscrd-hush] <AkiraX> Help secure the network?


Designer>Artist
Contact MeSmall or large jobs are no problem. Need me to print it? I can do that too!
Let me build your website. We can work one on one to get you what you need online.
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Goooooaaaals!
We discovered last week how easy it was to add a data tracking system to our websites using Google Analytics(GA). This week I'll share how we can measure a website for performance in specific interactions. In GA terms, a goal is a specific interaction and a conversion is when a visitor completes that interaction. To begin using this tool, all you have to do is set a goal or multiple goals for your website. GA has an easy way to integrate them and it will track your site's progress toward those goals. We just love GA.
Destination and Events
As I stated in last week's blog post, Google Analytics is a tool with vast capabilities. Goals are one them. Again, goals are specific user interactions on your site, when a visitor performs your specified interaction, GA records that as a conversion, meaning that goal has been reached. The interactions can be anything from button clicks, form submissions, file downloads, etc. There are four different goal types to select from:
I created two goal types, a destination and an event. The set-up was easy. For the destination goal, I used the available GA Share/social connect template. I added the destination URL of my Blog Post 7 to my Facebook wall and encouraged friends to go to it. For each conversion, I assigned a dollar value of $1 USD. I also added the Funnel option of tracking to see how visitors arrived at the conversion. In the funnel option I added the Step 1 entry way of the Index page, although this step is not required.
The event goal tracks the number of clicks on the Subscribe! button I added on the Index page of my User Science Journal. I used the GA Submission template, which was meant for form submissions, but it served my purpose just as well. When visitors click on the Subscribe! button, it opens up a survey form for them to enter their email. The set-up required event conditions, I assigned attributes to those conditions. For each event conversion, I gave it a $150 USD value.
I added the following gtag codes on the Index page:
The codes placed the Subscribe! button with its event conditions to the Index page:
Results
To encourage traffic to the site, I posted another announcement on my Facebook wall. The results were great, considering I had expected just a one or two clicks. The overview showed, 8 completions total, 5 clicks on the Event goal and 3 clicks on the destination page with a Conversion Rate of 66.67% and 11.11% Abandonment Rate. The completions showed a total Goal Value of $753.00:Details on the each goals are below:
The Multi-channel Funnels overview is also interesting, because I had expected most visitors to arrive via my Facebook post. However, as shown below, 87.50% of conversions were from direct and only 12.50% were from social:
The Goal Flow visualization for the Event Goal showed, 3 entered through Facebook and 2 were direct:
The Funnel visualization for the Destination Goal showed it was completed in 3 sessions with a 75% conversion rate: