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WorldWind released the open-source Java SDK earlier. The installation and testing steps are as follows: 1. Download WorldWind Java SDK : Http://builds.worldwind.arc.nasa.gov/download.asp After decompression, you can obtain jogl. jar, gluegen-rt.jar, WorldWind. jar, gluegen-rt.dll, jogl. dll, jogl_awt.dll, jogl_cg.dll 2. Open eclipse and create a Java Project1) Create the Lib folder under the project and put the three jar packages obtained in the first step into the lib directory.2) create a fold

hackers, SO 2 + 2 = 5-Although cryptography and mathematics may be mistakenly used. If a system using cryptography is cracked, it is only possible that the designer mistakenly applies cryptography. This is not because cryptography does not work, it's not because someone "cracked" Cryptography-it's not a mathematical error when your bank mistakenly handled your account, and your mom was infected with computer viruses by downloading unfamiliar attachments. is not the same as an email error. This

650) this.width=650; "src=" Http://img.mp.itc.cn/upload/20160613/494e748297d44abd93f01c4cdcff8eff_th.jpg "style=" border:0px;margin:0px;padding:0px;font-size:0px; "/>　　Wen/Sindongfang, Gen Y author, columnist, Focus on the Internet technology fieldAliens have always been the subject of constant research by scientists, there are many people have been the question: in the vast universe, in addition to the existence of human beings on Earth, other planets have not found high intelligence?1969, the

unconventional.6. Provide home viewPeople are accustomed to the concept of home page. The home view can often help users navigate through the features of the product and provide them with quick access to common operations. The home page can provide users with a sense of security, so they don't have to worry about losing their way in the app when exploring features and browsing content.Let's take a look at the visualization Explorer from NASA, which h

Directory (?) [-] About OpenStack OpenStack is an Apache licensing and is a free software and open source project developed by NASA and Rackspace OpenStack is a project managed by a cloud platform it's not a software. The project is composed of several major components to accomplish some specific work Cloudfoundry Introduction PaaS (Platform as a Service) is a relatively hot topic in the industry. This article pres

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efficiency. 24. NASA WorldWindReplace Google Earth! WorldWind and Google Earth are very similar, they allow you to browse the world's scenery. Although it is not better than building a map (why not use Google maps if you want to view and build a map ?), However, if you want to view 3D landscapes anywhere in the world, NASA WorldWind will surely surprise you! 25. notepad2Replace the laptop program that

musings (lectures by Donald knuth) The cathedral and the Bazaar (Introduction to open source software) Patterns and practices: application architecture guide 2.0 Security Engineering Digital Signal Processing for engineers and scientists Getting real (courtesy 37 Signals) Structure and interpretation of computer programs Domain driven design quickly OO design Best kept secrets of peer code review NASA software measurement

IBM and RedHat may soon join the OpenStack support camp, which will largely promote the development of this cloud open source code project. GigaOm first reported the news that IBM and RedHat will join the OpenStack team, but the news has not yet been confirmed by both companies and OpenStack. OpenStack is a cloud computing software jointly developed by NASA and Rackspace. Since its launch two years ago, OpenStack has IBM and Red Hat may soon join the

, including Google, Yahoo, and even NASA (NASA), use Python extensively. Disadvantages: The first drawback is that the running speed is slow, which is very slow compared with the C program. Because Python is an interpreted language, your code will be translated into a machine code that the CPU can understand in one line during execution, this translation process is very time-consuming, so it is very slow.

to reuse in other programs. If some code is called only in one place in the program, as long as it can be understood as a part of a larger category, and this part of code may be used in other programs, it can be proposed to form a separate class. Software Engineering Laboratory, a software engineering laboratory at NASA, once studied 10 projects actively pursuing code reuse (McGarry, waligora, and mcermott 1989 ). The results show that no code in the

. Problems often occur in areas of uncertainty (unpredictability), which makes it more difficult to debug related concurrency code .There is a very well-known example of the unpredictability of concurrent programming: In 1995, NASA sent the pioneer Mars probe, but when the probe landed on our red neighbour planet shortly after the mission came to a halt, the Mars rover inexplicably restarted, in the computer field, This behavior is determined to be a

(train); //Evaluation ModelEvaluation eval =NewEvaluation (test); Eval.evaluatemodel (classifier, test); System.out.println (Eval.toclassdetailsstring ()); } //not sure sampling Public StaticInstances uncertaintysample (Instances labeled, Instances unlabeled,intStartintEndthrowsexception{//using a labeled first training modelNaivebayes classifier =NewNaivebayes (); Classifier.buildclassifier (labeled); //Sort by EntropyArrayList NewArraylist(); for(inti = start; I )

automatically backing up your MP3, and so on, and can also be used to make Web sites, and to do the backstage of online games. Py?thon provides us with a very comprehensive library of functions, covering the network, files, GUI, database, text and a lot of content, is called "Built-in battery (batter?ies included)". In the process of Python development, many features do not have to be written from scratch and can be used directly. Python is widely used, such as YouTube, Nstagram, the domestic D

To provide an unencumbered RPM Based Enterprise Linux distribution that retains enough compatibility with Red Hat Enterprise Linux (version 3 and beyond) to allow easy upgrades and to retain compatibility with their errata srpms. being based off of rhel3 means that a machine shocould be able to avoid the upgrade treadmill until Oct 2008 since RHEL promises errata availability for five years from date of initial release and rhel3 shipped in Oct 2003.

such a design highly important. Generally, you will not spend too much time on applications. Quickly click on the screen, do not want to explore all the details, and then switch to other applications. They use iPhone applications on a treadmill, in a car, or even in supermarkets. They only take a look at the screen, because they also need to take into account the changing multi-end environment-the road ahead, the date in the table, and the reality TV

example, the lathe and the boring machine, the treadmill, the stair and the people (people, the ladder does not move, the people do not move, the ladder is the elevator, the stator and the rotor reverse motor.C) reversing the physical properties of an object: Top For example, if you put a few remaining shampoo bottles on your handstand, you can easily pour out the water;D) Use relativity to change the role (role swap) of system components ).For examp

developer, when variables are named after their 97 cats or their functions are called "dosomething ()," they look like they do not know what they are doing, and it makes their code harder to maintain in the process.10: Have fun Want to be stuck on the career treadmill? Hate your job. what it takes to move up in this business is not merely dogged determination to bring home an ever growing paycheck but an actual enjoyment of your work. if you do not l

VaR id = (this. _ style> 24) 0xff; ">... Smile Take the model... smile... then... The most fake in history The child is very talented in gymnastics .. The cat's eyes are not good... This guy... pretty handsome... pretty bad .. The palm of your hand..Brazil Desperate scissors legs .. Does it look like the selection of the competition ?? The Chinese soccer team has lost its grandchildren... Arsenal striker... this balance .. The celebration after the goal... Thomas is still playing .

; 'Nokia ', 'price' => 1050 ),Array ('name' => 'laptop ', 'brand' => 'Lenovo', 'price' => 4300 ),Array ('name' => 'shares', 'brand' => 'Phillips', 'price' => 3100 ),Array ('name' => 'Treadmill ', 'brand' => 'three', 'price' => 4900 ),Array ('name' => 'Watch ', 'brand' => 'case', 'price' => 960 ),Array ('name' => 'LCD TV', 'brand' => 'Sony ', 'price' => 6299 ),Array ('name' => 'laser printer ', 'brand' => 'HP', 'price' => 1200));$ ShoppingList = array_