440,190 research outputs found

    Market Analysis: Wavetrend Technologies, Inc.

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    Our project team performed a market analysis for Wavetrend Technologies, Inc. Wavetrend is a world leader in the deployment of comprehensive track-and-trace solutions providing real-time visibility of assets, people and modes of transportation. This project recommended implementation of RFID technology in the aviation and healthcare industries because of profit potential and the technology\u27s advantages. These recommendations were supported by a great deal of market research gathered from a variety of primary and secondary sources. Our key primary source was a survey distributed to a number of Wavetrend\u27s customers while our secondary sources consisted of various RFID technology periodicals, several academic publications in the WPI database, Yahoo! Finance, and ABI Research

    Spatial Analysis of Control Points Distribution in Federal University of technology Akure

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    Context and background As a result of advancement in Technology, the densification of Survey Control Points (SCP) has become very easy. There has been some Survey Control Points (SCP) that were established within the Federal University of Technology Akure (FUTA) campus, Ondo state, Nigeria with no intention for database storage.Goal and Objectives: This study aimed at mapping of control points distribution within the University community. The objectives include to identify and re-coordinate all existing control points in the study area, compare the result statistically and create a database in a mobile application environment.Methodology: Ground survey and Geographic Information System (GIS) methods were adopted in the study. All existing Survey Control Points (SCP) within the study area were re-coordinated with the use of South Differential Global Positioning system (DGPS) in static mode with minimum of thirty-minutes observation per station. The observed data were downloaded and processed using South GPS Processor, AutoCAD 16 and ArcGIS 10.3.1 software. Student’s T-test was used in comparing some existing and the observed coordinates. The coordinates (Northings, Easting and Height), images of Survey Control Points (SCP) location, number and nearest identifying feature gotten from the ArcGIS environment were used in building the mobile application. Also, in the process of developing the mobile application, the following programming languages were used; JavaScript, HTML, CSS and Bootstrap. Notepad++ was used in compiling the codes while IntelXDK platform was used in building, testing and debugging the mobile application.Results: The result reveals that the control points are evenly distributed within the study area. It has also contributed to the quality of geospatial data in the University environment, eliminate duplication of efforts, and provide an effective and efficient means of data accessibility through the creation of a mobile application database. The developed mobile application database is hereby recommended for adoption and update by the Department of Surveying and Geoinformatics, FUTA.

    Computer science curriculum in the community college: an evaluative study

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    The purpose of this study was to assess the sufficiency of the Computer Studies curriculum at Camden County College in meeting the needs of its local job market. A questionnaire was distributed to 106 computer-based businesses in southern New Jersey, northern Delaware, and the greater Philadelphia area. The purpose of the survey was twofold. it was first necessary to ascertain whether or not these businesses would hire individuals possessing an associate\u27s degree in Computer Science and if so, how many such positions might they have available in any given year. The survey then questioned respondents about the individual needs of their organization with regard to entry level positions in the areas of software design and implementation. Fifty-seven, 54 percent, of the surveys were completed and returned. The researcher also investigated several areas of rapidly changing technology which included CASE Tool Technology, Object-Oriented Programming, Client/Server Systems, Hypermedia, Database Programming, and Graphical User interface. The survey results coupled with the author\u27s literary search led to the conclusion that Camden County College should update its Computer Studies program and that faculty and administrators must be aware of the need to continually modify this curriculum as the technology evolves

    The Second-Generation Guide Star Catalog: Description and Properties

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    The GSC-II is an all-sky database of objects derived from the uncompressed DSS that the STScI has created from the Palomar and UK Schmidt survey plates and made available to the community. Like its predecessor (GSC-I), the GSC-II was primarily created to provide guide star information and observation planning support for HST. This version, however, is already employed at some of the ground-based new-technology telescopes such as GEMINI, VLT, and TNG, and will also be used to provide support for the JWST and Gaia space missions as well as LAMOST, one of the major ongoing scientific projects in China. Two catalogs have already been extracted from the GSC-II database and released to the astronomical community. A magnitude-limited (R=18.0) version, GSC2.2, was distributed soon after its production in 2001, while the GSC2.3 release has been available for general access since 2007. The GSC2.3 catalog described in this paper contains astrometry, photometry, and classification for 945,592,683 objects down to the magnitude limit of the plates. Positions are tied to the ICRS; for stellar sources, the all-sky average absolute error per coordinate ranges from 0.2" to 0.28" depending on magnitude. When dealing with extended objects, astrometric errors are 20% worse in the case of galaxies and approximately a factor of 2 worse for blended images. Stellar photometry is determined to 0.13-0.22 mag as a function of magnitude and photographic passbands (B,R,I). Outside of the galactic plane, stellar classification is reliable to at least 90% confidence for magnitudes brighter than R=19.5, and the catalog is complete to R=20.Comment: 52 pages, 33 figures, to be published in AJ August 200

    Developing a traffic control device maintenance management system interfacing with Gis

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    Roadway systems contain a wide variety of spatially distributed physical features which require installation, maintenance and replacement. These features include traffic control devices such as signs, signals, pavement markings and streetlights. Several technologies exist that can be utilized by the transportation sector to improve program management of a number of these features. Geographic Information Systems (GIS) technology provides a powerful environment for the capture, storage, retrieval, analysis, and display of spatial (locationally defined) data. A need exists to provide an inventory of the transportation physical plant to interface with a work management system. Information pertaining to the number and condition of such features is required for planning, operating, maintaining, managing and budgeting needs. This thesis summarizes the development of a user-friendly, computerized process to establish a graphical interface between a roadway inventory database and GIS; Evaluation of existing technologies and a survey of current literature will provide a basis for the design of a Traffic Control Device Maintenance Management System. This system will provide a consistent form of technology transfer on a common platform. This system will manage resources by integrating work-orders and the database. The system will utilize GIS technology to integrate a work-order system and a database reporting system for resource management. The work order interface capabilities will include maintenance work-order management, project cost and progress tracking, and program planning and policy analysis; The key is to develop a user-friendly system useful to both the field-level installation crews and planning-level management. A case study in Clark County, Nevada, will be used to evaluate alternative methods of collecting and data on traffic control devices and to illustrate the development of a GIS-based management system. This system is intended to improve the efficiency and effectiveness of operational practices as well as serve as a vital decision support tool for planning and management

    Blockchain-based database in an IoT environment: challenges, opportunities, and analysis

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    © 2020, Springer Science+Business Media, LLC, part of Springer Nature. As Bitcoin and other cryptocurrencies become widely popular recently, the underlying concept—Blockchain—gets unprecedented attentions. One popular usage of Blockchain is a distributed replicated database. In this paper, we present initial studies on the challenges and opportunities of using Blockchain as a database for Internet-of-Things (IoT) applications. For IoT applications, latency is an important factor, whereas for application developers, consistency is an important property which specifies how the system orders the operations over blocks (that are stored in the Blockchain). However, consistency property of Blockchain-based database is not well studied, especially in the case when network is not synchronized and the system is dynamic—both are typical scenario in an IoT environment. Intuitively, Blockchain is designed to maintain a single ground truth—one can view the Blockchain itself as the order of the blocks that all participants should observe and respect. In most Blockchain designs, the participants will eventually converge to the same chain of blocks. However, there is very few study on the challenges of using Blockchains as a database in an IoT environment. This paper focuses on the enabling technology behind Bitcoin, Bitcoin Backbone Protocol (BBP). We first survey Blockchain-based IoT applications, and identify why it is necessary to use it as a database for IoT applications. Then we explore several reasonable consistency models for BBP-based database, and then show that such a database does not satisfy many consistency models under certain typical IoT environments. Moreover, we use simulation to study how network quality and system dynamic affect consistency. Finally, we propose a simple mechanism to make the BBP-based database satisfy both read-my-write and eventual consistency

    Storage Solutions for Big Data Systems: A Qualitative Study and Comparison

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    Big data systems development is full of challenges in view of the variety of application areas and domains that this technology promises to serve. Typically, fundamental design decisions involved in big data systems design include choosing appropriate storage and computing infrastructures. In this age of heterogeneous systems that integrate different technologies for optimized solution to a specific real world problem, big data system are not an exception to any such rule. As far as the storage aspect of any big data system is concerned, the primary facet in this regard is a storage infrastructure and NoSQL seems to be the right technology that fulfills its requirements. However, every big data application has variable data characteristics and thus, the corresponding data fits into a different data model. This paper presents feature and use case analysis and comparison of the four main data models namely document oriented, key value, graph and wide column. Moreover, a feature analysis of 80 NoSQL solutions has been provided, elaborating on the criteria and points that a developer must consider while making a possible choice. Typically, big data storage needs to communicate with the execution engine and other processing and visualization technologies to create a comprehensive solution. This brings forth second facet of big data storage, big data file formats, into picture. The second half of the research paper compares the advantages, shortcomings and possible use cases of available big data file formats for Hadoop, which is the foundation for most big data computing technologies. Decentralized storage and blockchain are seen as the next generation of big data storage and its challenges and future prospects have also been discussed
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