![]() "Spectacular Hubble Space Telescope Observations of the Coma Galaxy D100 and Star Formation in Its Ram Pressure–stripped Tail". Principles of astrophysical fluid dynamics. ^ a b Clarke, Cathie Carswell, Bob (2007).Parafoil – a non-rigid parachute airfoil inflated by wind, also known as a ram-air parachute.Ram air turbine – a propeller used by aircraft to generate power.Ram-air intake – an air intake system that aids in engine performance and cooling, commonly used on aircraft and other high-performance vehicles.This blunt-body concept was used in Apollo-era capsules. This was counter-intuitive at the time, when sharp, streamlined profiles were assumed to be better. ![]() In other words, kinetic energy is converted into heated air via ram pressure, and that heated air is quickly moved away from object surface with minimal physical interaction, and hence minimal heating of the body. Eggers of NACA used an insight about ram pressure to propose the blunt-body concept: a large, blunt body entering the atmosphere creates a boundary layer of compressed air which serves as a buffer between the body surface and the compression-heated air. It is primarily this ram pressure (rather than friction) that heats the air that in turn heats the meteoroid as it flows around it. Ram pressure and atmospheric (re)entry Ī meteoroid traveling supersonically through Earth's atmosphere produces a shock wave generated by the extremely rapid compression of air in front of the meteoroid. This is an attractive mechanism to explain not only the presence of isolated dwarf galaxies away from galaxy clusters with particularly low hydrogen abundance to stellar mass ratio, but also the compression of gas in the centre of a dwarf galaxy and the subsequent reignition of star formation. Although the typical overdensity within the cosmic web is significantly lower than that found in the environment of galaxy clusters, the high relative speed between a dwarf and the cosmic web renders ram pressure efficient. More recently, it has been shown that ram pressure can also lead to the removal of gas in isolated dwarf galaxies that plunge through the cosmic web (the so-called cosmic web stripping process). Increased Hα emission, a sign of star formation, corresponds to the compressed CO region, suggesting that star formation may be accelerated, at least temporarily, while ram pressure stripping of neutral hydrogen is ongoing. Recent radio observation of carbon monoxide (CO) emission from three galaxies ( NGC 4330, NGC 4402, and NGC 4522) in the Virgo cluster point to the molecular gas not being stripped but instead being compressed by the ram pressure. Spiral galaxies that have fallen at least to the core of both the Virgo and Coma clusters have had their gas (neutral hydrogen) depleted in this way and simulations suggest that this process can happen relatively quickly, with 100% depletion occurring in 100 million years to a more gradual few billion years. As galaxies fall toward the center of a cluster, more and more of their gas is stripped out, including the cool, denser gas that is the source of continued star formation. Ram pressure stripping is thought to have profound effects on the evolution of galaxies. These ram pressure stripped galaxies will often have a large trailing tail and because of this they are commonly called "Jellyfish galaxies." Evidence of this ram pressure stripping can be seen in the image of NGC 4402. This pressure can strip gas out of the galaxy where, essentially, the gas is gravitationally bound to the galaxy less strongly than the force from the intracluster medium 'wind' due to the ram pressure. ![]() P ram = ρ u i u j the speed of the galaxy relative to the medium. It causes a drag force to be exerted on the body. Ram pressure is a pressure exerted on a body moving through a fluid medium, caused by relative bulk motion of the fluid rather than random thermal motion. Note the dust (brown) trailing behind (toward upper right) the galaxy, versus the dust-free (blue-white) leading edge. Ram pressure stripping in NGC 4402 as it falls towards the Virgo Supercluster (off image, toward bottom left).
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![]() Missing data are values for variables that were not collected from a study participant whereas missing cases are values for entire sets of variables that were not collected from a participant. There are two categories of missing data, missing values and missing cases. Missing data – What it is and what to do when you find it ![]() Example of a de-identified participant recruitment tracking table (excel file) Information included will be tailored to each study but may include contact dates and methods, eligibility, participation (or opted out), receipt of materials (informed consent), completion of study phases, and other key data. These tables are used to track research participants over the course of a study. Manual data entry – Use a template to ensure data fields are configured appropriately to reduce error and support statistical analysesĬontact Roger Brown ( in the School of Nursing Research Office to have a template created for data entry for your research project. Sample Protocol for Individual Interviews, Focus Groups, and Community Meetings Preparing to conduct an interview or focus group Qualitative research: Data collection, analysis, and managementĬommunity Toolbox: Conducting Focus Groups Questionnaire design: Theory and best practice Qualitative and quantitative data collectionĪn overview of quantitative and qualitative data collection methodsĬombining qualitative and quantitative sampling, data collection and analysis techniques in mixed-methods studies Types of statistical data: Numerical, categorical and ordinal ![]() Types of data measures – The kind of data you have determines the kind of analyses that you can perform Qualitative vs Quantitative Data – What’s the Difference? Links to training guides for various software for data analysis and guidance for handling missing data. Tips for collecting qualitative and quantitative data including available platforms for survey research, strategies for conducting interviews, ways of coding and organizing different types of data, guidance for entering data into a database, and transcription services recommended by UW-Madison. ![]() How can I do it using SPSS? I think you have to use the select cases tool, but I don’t know how to select cases (or variables) upon cases (or variables). After I would later compare the same selected group with patients with hyperglycemia (1), which also have skin rash (1) and did not received corticosteroids (0). However, the patients, based on ulcer location, should also be subclassifed as patients with hyperglycemia (1), which also have skin rash (1) and received corticosteroids (1). In other words, let’s imagine we have a database from 10000 patients with crohn’s disease, I want to select ulcer location (loc-1, loc-2, loc3 and loc-4), for later comparison. Variable 4 includes selected patients from the previous variables based on the output. patients with variable 1 (1) which don't have variable 2 (0), but has variable 3 (1) and variable 4 (1). ![]() I want to work on this data based on multiple cases selection or subgroups, e.g. Are there any download sites for pspp (windows 7 64bit or 32bit ) other than sourceforge, which do not risk the installers having malware/adware bundled with them Unfortunately I do not have the experience/confidence/software to build an installer for windows from the source code. I have a data base of patients which contain multiple variables as yes=1, no=0. Hi, I am new on SPSS, I hope you can provide some insights on the following. From my students' perspective, it is also valuable because they can advertise their SPSS/PSPP skills to potential employers- even small non-profit summer employers- and complete analyses without anyone needing to invest in an expensive site license just for a few crosstabulations and a regression! Professional researchers using SPSS/PSPP daily will surely appreciate the professional look, feel and support of SPSS, but for those who only periodically use stats or only basic statistics, PSPP is a great alternative supported by a small, but active community of developers and users. This gives more students access to hands-on analyzing at one time. At an institutional level, this is huge because my campus has SPSS site licences in one lab, but can install PSPP for free campus-wide. This covers most everything in an introductory- and even intermediate- statistics test. Also, as of 2/26/16, the site talks about being installed on Windows 7. For a full-year statistics class in the social sciences, my students can use PSPP for just about every analysis you would expect to find from simple descriptive statistics to logistic regression. Many of the websites say that individuals are free to download and use the. Joining this thread late, but wanted to chime in to share my positive experiences using PSPP in the classroom as a substitute for SPSS. ![]() This construction process is similar to other block-building games like Minecraft, though there are no limits on the number of blocks that can be placed. The player has an unlimited amount of time to set up the various components that make up the assembly line, including conveyor belts, welders to attach pieces to each other, and sensors to trigger devices like pushers. Within each puzzle, the player is tasked to deliver a number of objects, constructed from one or more types of cube, to one or more delivery points by directing and assembling the individual cubes from their spawning point. Additional chapters have since been added during the game's time in Early Access, adding in new block types and furthering the story of the abductees' escape attempts. By successfully completing all the puzzles, the player's character is rescued from the alien race by other abductees to a hidden base on the alien homeworld, and begins to work with the other abductees to find a way to escape the planet and return home. Completing a specified quota of puzzles on a world lets the player advance to the next one, as well as advancing the story. The game is divided into 6 worlds with several puzzles per world. The player takes the role of a human that is abducted by an alien race and is put to work to help the aliens construct equipment the character does not appear to be the first one that has been taken for this purpose as throughout the levels are the corpses of other abducted humans, which the player can find and listen to their last audio log. Infinifactory is a puzzle game, structured as several sets of puzzles based on various tasks. The game combines elements of Zachtronics' previous SpaceChem and Infiniminer, with the assembly lines being built from blocks in a three-dimensional space. In the game, the player takes the role of a human abducted by aliens and forced to construct assembly lines to create certain objects for apparently-nefarious purposes. The game was later released on PlayStation 4 in December 2015. ![]() Infinifactory is a puzzle video game developed and published by Zachtronics, initially released on Microsoft Windows, OS X, and Linux on June 30, 2015. A full-frame sensor is better than APS-C or smaller to minimize the number of frames needed to cover the sky. Good noise performance at high ISO is important. ![]() It should be fairly obvious that the camera itself is an important part of an effective night 360 VR solution. Fortunately for us, the edge problems can be sidestepped by overlapping enough to use just the center portions of the frames. Using a fast ultra-wide or fisheye lens is better for reducing the time needed to take all of the panorama component shots, but these lenses typically have severe aberrations at the edges. Though you may see many online night sky scenes shot with medium to long focal lengths, aside from the sky-ground interface, they are not too difficult to stitch in many photo processing programs. Given the challenges mentioned above, the choice of lens (and camera) becomes critical. On individual frames, the exposures should be short enough to keep stars from trailing (shorter exposures for longer focal lengths), Between frames, there should be minimal delay to avoid star movement which will cause registration problems if the ground is also visible in the frame. This makes it necessary to take the shots forming the panorama in as short a time as possible. The second major problem to be dealt with is the movement of the sky. As with any 360 VR panorama, if foreground objects are part of the scene (certainly if the ground is included), then a special panoramic head is needed. While a daytime panorama can be done with care by hand, the long exposures needed for night sky panoramas make a tripod mandatory. Night Panorama ChallengesĮven for modern DSLR or mirrorless cameras, nighttime 360 VR panoramas are a challenge. 2014 - Click for interactive panorama viewing, then click on the circle/arrow at the top right of the viewer to start the interactive viewing session. While Google’s Pixel cameras include an impressively capable Astrophotography mode for single still images (at several minutes per shot), this isn’t applied to Photo Sphere panoramic shots.įrosty winter skies over Winter, Wisconsin - 14 Nov. The second problem is that at night, the exposures need to be many seconds long (at least), during which time the earth’s rotation is causing the stars to appear to move relative to the horizon. ![]() ![]() This is particularly hard to do with cell phones, especially if you have to be watching and poking at the screen behind the lens. If you’ve taken panoramic shots before (not necessarily a full 360 degrees), you will know that parallax errors occur if the panoramic photos are not taken with the camera rotating around the lens nodal point. First, stitching may not be accurate if objects are close to the camera. While these quick Photo Sphere panoramas are surprisingly good, there are a few limitations. Click for interactive panorama, then click on the circle/arrow at the top right of the viewer to start the interactive viewing session. 2017 - Photo shot with a Google Pixel 3A XL phone. Fall on the campus of Tokyo University - 30 Nov. ![]() MacOS Installation and Setup Linux Installation and Setup Your First Program! Note that for EGR 103 we will be using Spyder and Jupyter Notebooks but not writing programs with the Anaconda prompt or terminal - once you get to the "Close Jupyter Notebook" and "Close Navigator" part of the Getting Started page, everything below that is interesting but not applicable to EGR 103. If you are new to Anaconda, we highly recommend you go through the Getting started with Anaconda. The former shows you how to share documents and projects in a cloud environment, while the latter gives an overview of Anaconda and Spyder. During the setup, you can choose whether you want to learn more about Anaconda Cloud or how to get started with Anaconda.Note that installing may take some time - Anaconda installs several packages and libraries by default. You can generally accept all the default options. Save the installer to your hard drive.Note: if you are using a Duke VCM to run Anaconda, you will not be able to install Kite. It is an add on to Spyder that provides more in-depth help with Python commands. If Spyder asks about installing Kite, you can install Kite.We will ask you to launch that during lab and we will briefly go through how to write a program in Python. In the Navigator window, there may be multiple items.Once installed, start the Anaconda Navigator.You can also look at the tutorial and such, though on your own time a little later in the lab :).You can use all the default recommendations for the installation or, if you are sure you know what you are doing, you can make changes.You are not required to create an Anaconda account, but you are certainly allowed to.You will want to use the graphical installer and almost definitely the 64-bit unless you know you have a 32-bit processor. Go to and click the Download button if the correct version is listed just below it or pick the appropriate distribution from the "Get Additional Installers" section and download the package.It includes editing, interactive testing, debugging and introspection features." Spyder Documentation Installation Visualize results with Matplotlib, Bokeh, Datashader, and Holoviews" Anaconda Distribution Landing PageĪnaconda describes Spyder as: "Spyder, the Scientific Python Development Environment, is a free integrated development environment (IDE) that is included with Anaconda.Analyze data with scalability and performance with Dask, NumPy, pandas, and Numba.Develop and train machine learning and deep learning models with scikit-learn, TensorFlow, and Theano.Manage libraries, dependencies, and environments with Conda.Quickly download 1,500+ Python/R data science packages.With over 15 million users worldwide, it is the industry standard for developing, testing, and training on a single machine, enabling individual data scientists to: Anaconda describes its Anaconda Distribution as follows: "The open-source Anaconda Distribution is the easiest way to perform Python/R data science and machine learning on Linux, Windows, and Mac OS X. ![]() The game can be completed for 5-6 hours if you have the time but if you want to religiously complete the collectibles, then you can add around an hour or two on top of that. It’s quite frustrating since the storytelling itself is really delightful as they tackle tough situations that even reality doesn’t want to face. Then Kay follows them around to comfort them somehow and deal with the monsters that they themselves created, then clear out the corruption from their hearts. Every character that you have to face, you have to listen to their story – the root cause of this existential crisis. It swims really fast and you will have to be really strategic when is it the right time to swim for your life.Īside from the monsters that you need to avoid, there are also puzzles and corruption that you need to contain. Ready to devour you when you stay on the water for too long. You will have to be careful in crossing the seas because one of Kay’s monster is a hairy whale-like-creature with red eyes and fangs that could go on for days. Dealing with your inner demons has never been literal for this game. Simple enough but as you go through the journey, the city hides its monsters below sea levels. This game doesn’t really offer any objective or goal to-do list but you are given the ability to light a flare that will guide you where to go. Strolling through the rooftops or swimming from one building to the next isn’t the only challenge that you are going to face. ![]() Helping Kay navigate that sunken city is just the beginning of her journey.Īs you wake up in a sunken Berlin-based city, you will have to navigate using only a boat. ![]() Loneliness takes a lot of form and our minds can be very creative in creating that destructive world. I can literally say that Kay has the shittiest life there is! All possible social problems known to man are lived by her and I genuinely feel sorry for her. As I played through this game, the story itself is quite short. She has to face relentless and distorted monsters to emerge victoriously and shed her monstrous form. This is what Sea of Solitude is trying to tell us as we play as Kay, a troubled woman, who has to face her inner demons and lift herself up from the loneliness that she is surrounded from and help the people around her too. But one thing they never told us though, that they exist within our minds and in that spot – they grow darker and deadlier by the day. When we were kids, we were always told that monsters do not exist and you can never find one beneath your bed or hiding in your closet. ![]() ![]() It has the same minimalist approach as StealthAudioPlayer, but without the playlist hiccups. If you're going against the WASAPI route and just want a simple DirectSound player with great sound, I strongly recommend MesonPlayer. Winamp with Maiko WASAPI output plugin (best interface of the bunch IMO, but Maiko is somewhat unstable and the sound is just a little off to my ears) StealthAudioPlayer (strong contender for best sound, but zero interface and unreliable playlist management) YMMV, but I think you'll always do best to play music through WASAPI or ASIO, so your (free) options are: Having that said, MusicBee sounds great to my ears. I'm among the people that DON'T believe all 'bit-perfect' players sound the same. Dolly’s vision was to foster a love of reading among her county’s preschool children and their families by providing them with the gift of a specially selected book each month. WASAPI and ASIO support, nice skin out of the box, plugin support (via Winamp Plugins, but you can use the Winamp VST plugin to expand on this), and it's a reliable performer. In 1995, Dolly Parton launched an exciting new effort, Dolly Parton’s Imagination Library, to benefit the children of her home county in East Tennessee, USA. if you just like to cue up music and keep it simple this is the media player for you. I find that Lilith did sound better than the rest of the media players that i tried but I don't know why but the imperfections in the music that i hear in Foobar/J River are not there. For my test i took the music files that i have that i found (sounded funny, bad recording file) in foobar and j river and played them in Lilith. Lilith Audio Player - I found this media player on the head fi Forums and red the thread and found that there was great controversy about people saying that it sounded better than other media players, so i gave it a shot to see if i could hear a difference. J River - Loved the way it organized and played your music and videos, didn't like the auto check and some of the functions.mostly the 60$ price tag.įoobar 2k - I like foobar, thou it takes some learning curve to use foobar properly, there is really no end to how far you can modify this program to tailor it to your music needs (other than death), but foobar does not play video and i find that it does not do good with lower quality recordings (had the same issue with J River) The best part of Winamp has to be milkdrop visualizations and with a add-on milkdrop can be used in Foobar. Winamp - Even in retirement Winamp is still "whipping the lamas ass!" used Winamp for years and still do on my smart phone. Prefer to listen to music on other players thou. VLC - Greatest video player ever there really is no video format that this this will not play. Windows Media Player - Great if you want to watch movies and play music but that's about it. Here are some of my findings for some of the different media players i have tried. I have, tried, tinkered, modified,put add-on's, skinned, listened to, watched so many media players threw the years now, to me each one has its advantages and disadvantages. A couple years ago now i started this exact quest to find the best media players and found that no one program does everything well. Working files are included, allowing you to follow along with the author throughout the lessons. Once you have completed this video based training course, you will be fully capable of using Anime Studio Pro 10 to create and animate your own projects for personal or professional use. Finally, the course will take you through a project, starting with setting the background, all the way through to animation and the final render. Here is a short list of features youll get in our Anime HD New Tab: - It shows local time and date - App provides you list of useful apps and services - Option of adding sticky notes and creating personal to-do list - List of most viewed websites - Searchbar - Simple and. One day I was sitting at the kitchen table, bored, thinking of what I could do that day. Lets renew this boring default new tab design with Anime Theme. This video tutorial will cover animation and special effects, including cycling animation, the walk cycle, motion tracking, and style building. Monday, SeptemHow Anime Studio Pro Started (McCoy's Story) I was 17 years old, always knew I wanted to do something in art but never had any drive, didn’t have a computer, never took an art class. Mark will teach you about bones, such as elbow bones, control levers, and bone locking. You will learn about drawing organic and compound shapes, basic and advanced masking, and how to draw in 3D. You will start with a tour of the interface, getting familiar with the palettes and layout of the program, then jump into learning about the drawing tools. Accept or ban lewd images while flirting with your boss. This course is designed for the absolute beginner, meaning no prior experience with Anime Studio Pro is required. You wake up on a spaceship filled only with women travelling to another planet, unaware of how you got there. This Anime Studio Pro 10 training course from Infinite Skills teaches you about the tools and concepts needed to create professional quality animations. |
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