Virtual Reality! Gadgets That Show It’S Really Real Watch out for Rabbit Holes! SEPTEMBER 2013 • ISSUE NO
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The Role of “Roles” in Use Case Diagrams
Lecture Notes in Computer Science 1 The Role of “Roles” in Use Case Diagrams Alain Wegmann1, Guy Genilloud1 1 Institute for computer Communication and Application (ICA) Swiss Federal Institute of Technology (EPFL) CH-1015 Lausanne, Switzerland icawww.epfl.ch {alain.wegmann, guy.genilloud}@epfl.ch Abstract: Use cases are the modeling technique of UML for formalizing the functional requirements placed on systems. This technique has limitations in modeling the context of a system, in relating systems involved in a same busi- ness process, in reusing use cases, and in specifying various constraints such as execution constraints between use case occurrences. These limitations can be overcome to some extent by the realization of multiple diagrams of various types, but with unclear relationships between them. Thus, the specification ac- tivity becomes complex and error prone. In this paper, we show how to over- come the limitations of use cases by making the roles of actors explicit. Interest- ingly, our contributions not only make UML a more expressive specification language, they also make it simpler to use and more consistent. 1 Introduction The Unified Modeling Language (UML), standardized by the Object Management Group (OMG) in 1996, aims at integrating the concepts and notations used in the most important software engineering methods. UML is today widely used by the software development community at large. While the bulk of the integration of the concepts is completed, there are still improvements to be made in their consistency. Such im- provements could increase the expressive power of UML while reducing its complex- ity. System design frequently starts with business modeling, i.e. -
Beyond Relational Databases
EXPERT ANALYSIS BY MARCOS ALBE, SUPPORT ENGINEER, PERCONA Beyond Relational Databases: A Focus on Redis, MongoDB, and ClickHouse Many of us use and love relational databases… until we try and use them for purposes which aren’t their strong point. Queues, caches, catalogs, unstructured data, counters, and many other use cases, can be solved with relational databases, but are better served by alternative options. In this expert analysis, we examine the goals, pros and cons, and the good and bad use cases of the most popular alternatives on the market, and look into some modern open source implementations. Beyond Relational Databases Developers frequently choose the backend store for the applications they produce. Amidst dozens of options, buzzwords, industry preferences, and vendor offers, it’s not always easy to make the right choice… Even with a map! !# O# d# "# a# `# @R*7-# @94FA6)6 =F(*I-76#A4+)74/*2(:# ( JA$:+49>)# &-)6+16F-# (M#@E61>-#W6e6# &6EH#;)7-6<+# &6EH# J(7)(:X(78+# !"#$%&'( S-76I6)6#'4+)-:-7# A((E-N# ##@E61>-#;E678# ;)762(# .01.%2%+'.('.$%,3( @E61>-#;(F7# D((9F-#=F(*I## =(:c*-:)U@E61>-#W6e6# @F2+16F-# G*/(F-# @Q;# $%&## @R*7-## A6)6S(77-:)U@E61>-#@E-N# K4E-F4:-A%# A6)6E7(1# %49$:+49>)+# @E61>-#'*1-:-# @E61>-#;6<R6# L&H# A6)6#'68-# $%&#@:6F521+#M(7#@E61>-#;E678# .761F-#;)7-6<#LNEF(7-7# S-76I6)6#=F(*I# A6)6/7418+# @ !"#$%&'( ;H=JO# ;(\X67-#@D# M(7#J6I((E# .761F-#%49#A6)6#=F(*I# @ )*&+',"-.%/( S$%=.#;)7-6<%6+-# =F(*I-76# LF6+21+-671># ;G';)7-6<# LF6+21#[(*:I# @E61>-#;"# @E61>-#;)(7<# H618+E61-# *&'+,"#$%&'$#( .761F-#%49#A6)6#@EEF46:1-# -
The Following Documentation Is an Electronically‐ Submitted Vendor Response to an Advertised Solicitation from the West
The following documentation is an electronically‐ submitted vendor response to an advertised solicitation from the West Virginia Purchasing Bulletin within the Vendor Self‐Service portal at wvOASIS.gov. As part of the State of West Virginia’s procurement process, and to maintain the transparency of the bid‐opening process, this documentation submitted online is publicly posted by the West Virginia Purchasing Division at WVPurchasing.gov with any other vendor responses to this solicitation submitted to the Purchasing Division in hard copy format. Purchasing Division State of West Virginia 2019 Washington Street East Solicitation Response Post Office Box 50130 Charleston, WV 25305-0130 Proc Folder : 702868 Solicitation Description : Addendum No 2 Supplemental Staffing for Microsoft Applicatio Proc Type : Central Contract - Fixed Amt Date issued Solicitation Closes Solicitation Response Version 2020-06-10 SR 1300 ESR06092000000007338 1 13:30:00 VENDOR VS0000020585 Cambay Consulting LLC Solicitation Number: CRFQ 1300 STO2000000002 Total Bid : $370,750.00 Response Date: 2020-06-09 Response Time: 09:51:40 Comments: FOR INFORMATION CONTACT THE BUYER Melissa Pettrey (304) 558-0094 [email protected] Signature on File FEIN # DATE All offers subject to all terms and conditions contained in this solicitation Page : 1 FORM ID : WV-PRC-SR-001 Line Comm Ln Desc Qty Unit Issue Unit Price Ln Total Or Contract Amount 1 Temporary information technology 2000.00000 HOUR $72.170000 $144,340.00 software developers Comm Code Manufacturer Specification -
Data Platforms Map from 451 Research
1 2 3 4 5 6 Azure AgilData Cloudera Distribu2on HDInsight Metascale of Apache Kaa MapR Streams MapR Hortonworks Towards Teradata Listener Doopex Apache Spark Strao enterprise search Apache Solr Google Cloud Confluent/Apache Kaa Al2scale Qubole AWS IBM Azure DataTorrent/Apache Apex PipelineDB Dataproc BigInsights Apache Lucene Apache Samza EMR Data Lake IBM Analy2cs for Apache Spark Oracle Stream Explorer Teradata Cloud Databricks A Towards SRCH2 So\ware AG for Hadoop Oracle Big Data Cloud A E-discovery TIBCO StreamBase Cloudera Elas2csearch SQLStream Data Elas2c Found Apache S4 Apache Storm Rackspace Non-relaonal Oracle Big Data Appliance ObjectRocket for IBM InfoSphere Streams xPlenty Apache Hadoop HP IDOL Elas2csearch Google Azure Stream Analy2cs Data Ar2sans Apache Flink Azure Cloud EsgnDB/ zone Platforms Oracle Dataflow Endeca Server Search AWS Apache Apache IBM Ac2an Treasure Avio Kinesis LeanXcale Trafodion Splice Machine MammothDB Drill Presto Big SQL Vortex Data SciDB HPCC AsterixDB IBM InfoSphere Towards LucidWorks Starcounter SQLite Apache Teradata Map Data Explorer Firebird Apache Apache JethroData Pivotal HD/ Apache Cazena CitusDB SIEM Big Data Tajo Hive Impala Apache HAWQ Kudu Aster Loggly Ac2an Ingres Sumo Cloudera SAP Sybase ASE IBM PureData January 2016 Logic Search for Analy2cs/dashDB Logentries SAP Sybase SQL Anywhere Key: B TIBCO Splunk Maana Rela%onal zone B LogLogic EnterpriseDB SQream General purpose Postgres-XL Microso\ Ry\ X15 So\ware Oracle IBM SAP SQL Server Oracle Teradata Specialist analy2c PostgreSQL Exadata -
LIST of NOSQL DATABASES [Currently 150]
Your Ultimate Guide to the Non - Relational Universe! [the best selected nosql link Archive in the web] ...never miss a conceptual article again... News Feed covering all changes here! NoSQL DEFINITION: Next Generation Databases mostly addressing some of the points: being non-relational, distributed, open-source and horizontally scalable. The original intention has been modern web-scale databases. The movement began early 2009 and is growing rapidly. Often more characteristics apply such as: schema-free, easy replication support, simple API, eventually consistent / BASE (not ACID), a huge amount of data and more. So the misleading term "nosql" (the community now translates it mostly with "not only sql") should be seen as an alias to something like the definition above. [based on 7 sources, 14 constructive feedback emails (thanks!) and 1 disliking comment . Agree / Disagree? Tell me so! By the way: this is a strong definition and it is out there here since 2009!] LIST OF NOSQL DATABASES [currently 150] Core NoSQL Systems: [Mostly originated out of a Web 2.0 need] Wide Column Store / Column Families Hadoop / HBase API: Java / any writer, Protocol: any write call, Query Method: MapReduce Java / any exec, Replication: HDFS Replication, Written in: Java, Concurrency: ?, Misc: Links: 3 Books [1, 2, 3] Cassandra massively scalable, partitioned row store, masterless architecture, linear scale performance, no single points of failure, read/write support across multiple data centers & cloud availability zones. API / Query Method: CQL and Thrift, replication: peer-to-peer, written in: Java, Concurrency: tunable consistency, Misc: built-in data compression, MapReduce support, primary/secondary indexes, security features. -
APPLYING MODEL-VIEW-CONTROLLER (MVC) in DESIGN and DEVELOPMENT of INFORMATION SYSTEMS an Example of Smart Assistive Script Breakdown in an E-Business Application
APPLYING MODEL-VIEW-CONTROLLER (MVC) IN DESIGN AND DEVELOPMENT OF INFORMATION SYSTEMS An Example of Smart Assistive Script Breakdown in an e-Business Application Andreas Holzinger, Karl Heinz Struggl Institute of Information Systems and Computer Media (IICM), TU Graz, Graz, Austria Matjaž Debevc Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia Keywords: Information Systems, Software Design Patterns, Model-view-controller (MVC), Script Breakdown, Film Production. Abstract: Information systems are supporting professionals in all areas of e-Business. In this paper we concentrate on our experiences in the design and development of information systems for the use in film production processes. Professionals working in this area are neither computer experts, nor interested in spending much time for information systems. Consequently, to provide a useful, useable and enjoyable application the system must be extremely suited to the requirements and demands of those professionals. One of the most important tasks at the beginning of a film production is to break down the movie script into its elements and aspects, and create a solid estimate of production costs based on the resulting breakdown data. Several film production software applications provide interfaces to support this task. However, most attempts suffer from numerous usability deficiencies. As a result, many film producers still use script printouts and textmarkers to highlight script elements, and transfer the data manually into their film management software. This paper presents a novel approach for unobtrusive and efficient script breakdown using a new way of breaking down text into its relevant elements. We demonstrate how the implementation of this interface benefits from employing the Model-View-Controller (MVC) as underlying software design paradigm in terms of both software development confidence and user satisfaction. -
Recommendations for Integrating a P300-Based Brain–Computer Interface in Virtual Reality Environments for Gaming: an Update
computers Review Recommendations for Integrating a P300-Based Brain–Computer Interface in Virtual Reality Environments for Gaming: An Update Grégoire Cattan 1,* , Anton Andreev 2 and Etienne Visinoni 3 1 IBM, Cloud and Cognitive Software, Department of SaferPayment, 30-150 Krakow, Poland 2 GIPSA-lab, CNRS, Department of Platforms and Project, 38402 Saint Martin d’Hères, France; [email protected] 3 SputySoft, 75004 Paris, France; [email protected] * Correspondence: [email protected] Received: 19 September 2020; Accepted: 12 November 2020; Published: 14 November 2020 Abstract: The integration of a P300-based brain–computer interface (BCI) into virtual reality (VR) environments is promising for the video games industry. However, it faces several limitations, mainly due to hardware constraints and limitations engendered by the stimulation needed by the BCI. The main restriction is still the low transfer rate that can be achieved by current BCI technology, preventing movement while using VR. The goal of this paper is to review current limitations and to provide application creators with design recommendations to overcome them, thus significantly reducing the development time and making the domain of BCI more accessible to developers. We review the design of video games from the perspective of BCI and VR with the objective of enhancing the user experience. An essential recommendation is to use the BCI only for non-complex and non-critical tasks in the game. Also, the BCI should be used to control actions that are naturally integrated into the virtual world. Finally, adventure and simulation games, especially if cooperative (multi-user), appear to be the best candidates for designing an effective VR game enriched by BCI technology. -
Database Software Market: Billy Fitzsimmons +1 312 364 5112
Equity Research Technology, Media, & Communications | Enterprise and Cloud Infrastructure March 22, 2019 Industry Report Jason Ader +1 617 235 7519 [email protected] Database Software Market: Billy Fitzsimmons +1 312 364 5112 The Long-Awaited Shake-up [email protected] Naji +1 212 245 6508 [email protected] Please refer to important disclosures on pages 70 and 71. Analyst certification is on page 70. William Blair or an affiliate does and seeks to do business with companies covered in its research reports. As a result, investors should be aware that the firm may have a conflict of interest that could affect the objectivity of this report. This report is not intended to provide personal investment advice. The opinions and recommendations here- in do not take into account individual client circumstances, objectives, or needs and are not intended as recommen- dations of particular securities, financial instruments, or strategies to particular clients. The recipient of this report must make its own independent decisions regarding any securities or financial instruments mentioned herein. William Blair Contents Key Findings ......................................................................................................................3 Introduction .......................................................................................................................5 Database Market History ...................................................................................................7 Market Definitions -
The Virtual Reality Renaissance Is Here, but Are We Ready? 2.2K SHARES WHAT's THIS?
MUST READS SOCIAL MEDIA TECH BUSINESS ENTERTAINMENT US & WORLD WATERCOOLER JOBS MORE The Virtual Reality Renaissance Is Here, But Are We Ready? 2.2k SHARES WHAT'S THIS? IMAGE: MASHABLE, BOB AL-GREENE BY LANCE ULANOFF / 2014-04-20 21:19:32 UTC This piece is part of Mashable Spotlight, which presents in-depth looks at the people, concepts and issues shaping our digital world. I'm flapping my wings. Not hard, but slowly and smoothly. At 25 feet across, my wingspan is so great I don't need to exert much energy to achieve lift. In the distance, I see an island under an azure sky. This is my home. Off to my west, the sun is setting and the sky glows with warm, orange light. Spotting movement in the ocean below, I bend my body slightly to the left and begin a gentle dive. As I approach the shore, I spot my prey splashing in the shallows. I lean back, keeping my wings fully extended so I can glide just above the water. I'm right over the fish. I pull in my wings, bend forward sharply and dive into the water. I emerge with a fish in my mouth. Success. Better yet, I did all this without ever leaving the ground or getting wet. Lance Ulanoff trying out the American Museum of Natural History's Pterosaur flight simulator. IMAGE: MASHABLE This is virtual reality, or at least the American Museum of Natural History’s (AMNH) brand of semi-immersive virtual reality. With a large projection screen, Microsoft Kinect V1 and a gaming PC, the setup lets you control the flight of a virtual pterosaur by standing in front of the Kinect sensor, flapping your arms and bending. -
Virtual Reality Design: How Upcoming Head-Mounted Displays Change Design Paradigms of Virtual Reality Worlds
MediaTropes eJournal Vol VI, No 1 (2016): 52–85 ISSN 1913-6005 VIRTUAL REALITY DESIGN: HOW UPCOMING HEAD-MOUNTED DISPLAYS CHANGE DESIGN PARADIGMS OF VIRTUAL REALITY WORLDS CHRISTIAN STEIN “The matrix has its roots in primitive arcade games. […] Cyberspace. A consensual hallucination experienced daily by billions of legitimate operators, in every nation, by children being taught mathematical concepts. […] A graphic representation of data abstracted from banks of every computer in the human system. Unthinkable complexity. Lines of light ranged in the nonspace of the mind, clusters and constellations of data. Like city lights, receding.” — William Gibson, Neuromancer (1984) 1. Introduction When William Gibson describes the matrix in his canonical cyber-punk novel Neuromancer, it is a computer-generated parallel universe populated and designed by people all over the world. While it would be an exaggeration to say this is about to become a reality, with current-generation virtual reality systems an important step toward immersive digital worlds has already taken place. This article focuses on current developments in virtual reality (VR) with head-mounted displays (HMDs) and their unique digital experiences. After decades of experimentation with VR beginning in the late 1980s, hardware, software, and consumer mindsets are finally ready for the immersive VR experiences its early visionaries dreamed of. As far back as 1962, Morton Heilig developed the first true VR experience with Sensorama, where users could ride a “motorcycle” coupled with a three-dimensional picture; it even www.mediatropes.com MediaTropes Vol VI, No 1 (2016) Christian Stein / 53 included wind, various smells, and engine vibrations. Many followed in Heilig’s footsteps, perhaps most famously Ivan Sutherland with his 1968 VR system The Sword of Damocles.1 These developments did not simply constitute the next step in display technology or gamer hardware, but rather a major break in conceptualizations of space, speed, sight, immersion, and even body. -
Virtual Reality’ Paradigm
San Jose State University SJSU ScholarWorks ART 108: Introduction to Games Studies Art and Art History & Design Departments Fall 12-2017 Exploring Oculus Rift: A Historical Analysis of the ‘Virtual Reality’ Paradigm Chastin Gammage San Jose State University, [email protected] Follow this and additional works at: https://scholarworks.sjsu.edu/art108 Part of the Game Design Commons, and the Graphics and Human Computer Interfaces Commons Recommended Citation Chastin Gammage. "Exploring Oculus Rift: A Historical Analysis of the ‘Virtual Reality’ Paradigm" ART 108: Introduction to Games Studies (2017). This Final Class Paper is brought to you for free and open access by the Art and Art History & Design Departments at SJSU ScholarWorks. It has been accepted for inclusion in ART 108: Introduction to Games Studies by an authorized administrator of SJSU ScholarWorks. For more information, please contact [email protected]. Chastin Gammage Professor James Morgan CS 108: Introduction to Game Studies 15 December 2017 Exploring Oculus Rift: A Historical Analysis of the ‘Virtual Reality’ Paradigm Although many consider Virtual Reality to be a relatively new concept, it is more appropriately defined as a long-standing ideology subject to continuous transformation and several varying iterations throughout time depending on the advents in technology. Peter Stearns, a renown modern historian, once wrote an article sharing a similar historically oriented disposition claiming that "the past causes the present, and so the future. Anytime we try to know how something happened… we have to look for the factors that took shape earlier… only through studying history (a proper historical analysis) can we begin to comprehend the factors changing the field so rapidly." In essence, understanding the historical legacy associated with virtual reality is a critical first step in developing a solid foundation on the topic as a whole. -
Software Architecture Bertrand Meyer Lecture 7: Patterns, Observer, MVC
References Last update: 18 April 2007 Erich Gamma, Ralph Johnson, Richard Helms, John Software Architecture Vlissides: Design Patterns, Addison-Wesley, 1994 Bertrand Meyer Jean-Marc Jezequel, Michel Train, Christine Mingins: Design Patterns and Contracts, Addison-Wesley, 1999 ETH Zurich, March-July 2007 Karine Arnout: From Patterns to Components, 2004 ETH Lecture 7: Patterns, Observer, MVC thesis, http://se.inf.ethz.ch/people/arnout/patterns/ Patterns in software development Benefits of design patterns Design pattern: ¾ Capture the knowledge of experienced developers ¾ A document that describes a general solution to a ¾ Publicly available repository design problem that recurs in many applications. ¾ Common pattern language ¾ Newcomers can learn & apply patterns Developers adapt the pattern to their specific application. ¾ Yield better software structure ¾ Facilitate discussions: programmers, managers Some design patterns A pattern is not a reusable solution Creational Behavioral Solution to a particular recurring design issue in a ¾ Chain of Responsibility ¾ Abstract Factory particular context: ¾ Builder ¾ Command (undo/redo) ¾ Interpreter ¾ Factory Method ¾ “Each pattern describes a problem that occurs over ¾ Iterator ¾ Prototype and over again in our environment, and then describes ¾ Singleton ¾ Mediator ¾ Memento the core of the solution to this problem in such a way Structural ¾ Observer that you can use this solution a million times over, ¾ Adapter ¾ State without ever doing it the same way twice.” ¾ Bridge ¾ Strategy Gamma et al.