Fat Client Research Articles

A Fat Client OS Architecture Supported by Semi-network Resources

Purpose–This study is to explore a way toretainthe strengths and eliminatethe weaknesses of the existingarchitecture oflocal OS and cloud OS,then create an innovativeone, which is referredto as semi-network OS architecture.Method–The elements of semi-network OS architecture includes networkresources, localresources, and semi-mobile hardware resources; among them, networkresources are the expanded portionof OS, which is used to ensure the scalability of OS; local resources are the base portion of OS, which is used to ensure the stability of local computing, as well as the autonomy of user operations; the semi-mobile hardware resource is OSPU, which is used to ensure the positioning and security of dataflow.Results–Thefat client OS relies on the network shared resources,local exclusive resources,and semi-mobilehardware resources (OSPU), not relies solely on a single resource, to perform its tasks on a fat client, in thisarchitecture, most of the system files of OS on a fat client isderived from OS server, which is a network shared resources, and the rest of system files of OS is derived from OSPUof a fat client, which is a non-network resource, so the architecture of OShas "semi-network" attribute, wherein the OSPU is a key subordinate component for data processing and security verification,the OS server is a storage place rather than operating a placeof system files, and system files that stored on a server can only be downloaded to a fat client to carry out their mission.Conclusion–A complete OS is divided into base portion and expanded portion, and this "portion" division of OS enables a fat client to be dually supported by remote network resources and local non-network resources, therefore, it is expected to make a fat client more flexible, safer and more reliable, and more convenient to be operated.

Research on Man-Machine Service Reliability of New Generation Power System

With the rapid growth of smart grid dispatching business scale, the traditional fat client mode power system has a large degree of business coupling, which limits the power grid dispatching business. But the lightweight man-machine cloud terminal and man-machine service framework have greatly reduced the coupling degree of the grid dispatching system business. The appearance of man-machine service reduces the development cost of client, and makes the unified browsing of multi system and multi terminal equipment easier. However, how to ensure the reliability and stability of man-machine interaction service is a question worthy of discussion. How to adapt to the interaction of a lot of clients and to adapt to the requests of different clients put forward higher requirements for man-machine service. This article describes the man-machine service architecture and key technologies to ensure reliability, introduces technologies such as load balancing and thread pools that adapt to the characteristics of power grid human-computer interaction, introduces in detail the distributed job scheduling management mechanism within the man-machine service, and describes the standardized request and return result of man-machine service. Finally, through sample testing and on-site operation, demonstrate the reliability of the man-machine service.

IEEE Access Special Section Editorial: Innovation and Application of Internet of Things and Emerging Technologies in Smart Sensing

The Internet of Things (IoT) technology is not just about the connection among billions of devices but also about enabling a wide range of new capabilities, architectures, or service paradigms. The scale of the IoT is set to have a major economic, social, and environmental impact. However, the implementation of IoT faces various challenges, including sensing ability, energy consumption, power supply, data security, privacy, and data accountability. In order to mitigate these challenges, more and more IoT systems are embracing the new IoT paradigm, such as millimeter-wave (mmWave), sensor-less sensing, backscattering Wi-Fi/RFID, wireless/vision hybrid, blockchain, fat client, and so on. These modes shed light on the emerging technologies that could revolutionize the conventional IoT systems.

Hung Up: Queering Fat Therapy

The pathologization of fat bodies, and the anti-fat attitudes that are (re)introduced and (re)enforced through such pathologies, present a barrier in the relationship between therapist and fat client. Previous literature confirms that therapists are more likely to predict negative prognoses for fat clients than for thin ones and to make generalized assumptions about fat clients. These anti-fat attitudes interfere with fat clients receiving bias-free, evidence-based care. Therapists can recognize and address their anti-fat attitudes and consume fat-positive material produced by fat people. Shifting these beliefs, attitudes, and practices may be difficult; in this way, queering, as a framework, becomes quite useful.

THE IQMULUS URBAN SHOWCASE: AUTOMATIC TREE CLASSIFICATION AND IDENTIFICATION IN HUGE MOBILE MAPPING POINT CLOUDS

Abstract. Current 3D data capturing as implemented on for example airborne or mobile laser scanning systems is able to efficiently sample the surface of a city by billions of unselective points during one working day. What is still difficult is to extract and visualize meaningful information hidden in these point clouds with the same efficiency. This is where the FP7 IQmulus project enters the scene. IQmulus is an interactive facility for processing and visualizing big spatial data. In this study the potential of IQmulus is demonstrated on a laser mobile mapping point cloud of 1 billion points sampling ~ 10 km of street environment in Toulouse, France. After the data is uploaded to the IQmulus Hadoop Distributed File System, a workflow is defined by the user consisting of retiling the data followed by a PCA driven local dimensionality analysis, which runs efficiently on the IQmulus cloud facility using a Spark implementation. Points scattering in 3 directions are clustered in the tree class, and are separated next into individual trees. Five hours of processing at the 12 node computing cluster results in the automatic identification of 4000+ urban trees. Visualization of the results in the IQmulus fat client helps users to appreciate the results, and developers to identify remaining flaws in the processing workflow.

THE IQMULUS URBAN SHOWCASE: AUTOMATIC TREE CLASSIFICATION AND IDENTIFICATION IN HUGE MOBILE MAPPING POINT CLOUDS

Current 3D data capturing as implemented on for example airborne or mobile laser scanning systems is able to efficiently sample the surface of a city by billions of unselective points during one working day. What is still difficult is to extract and visualize meaningful information hidden in these point clouds with the same efficiency. This is where the FP7 IQmulus project enters the scene. IQmulus is an interactive facility for processing and visualizing big spatial data. In this study the potential of IQmulus is demonstrated on a laser mobile mapping point cloud of 1 billion points sampling ~ 10 km of street environment in Toulouse, France. After the data is uploaded to the IQmulus Hadoop Distributed File System, a workflow is defined by the user consisting of retiling the data followed by a PCA driven local dimensionality analysis, which runs efficiently on the IQmulus cloud facility using a Spark implementation. Points scattering in 3 directions are clustered in the tree class, and are separated next into individual trees. Five hours of processing at the 12 node computing cluster results in the automatic identification of 4000+ urban trees. Visualization of the results in the IQmulus fat client helps users to appreciate the results, and developers to identify remaining flaws in the processing workflow.

A Dependency Graph Generation Process for Client-side Web Applications

The prolific growth of the Internet density has replaced native applications with web based applications. Current trend of web applications is moving towards fat client architecture, which results in a large codebase of the client side of web applications. Manual management of this huge code is tedious and time consuming for developers. We present a technique to construct a dependency graph to provide an overview of the code showing the inter-dependency of the code elements. We conduct a dynamic analysis to make the JavaScript call graph to address the dynamic nature of JavaScript. We further integrate HTML and CSS with the JavaScript call graph to make a dependency graph. Because we can accurately identify the HTML and CSS relations, the result of the dependency graph depends on the JavaScript call graph. Our evaluation of the JavaScript call graph on six web applications demonstrates that the precision is high for the large applications and relatively low for small applications. The recall is low for large applications and relatively higher for small applications.

基于ArcGIS Engine的地质灾害调查录入系统研究

本系统采用C/S胖客户端开发模式，是为采集贵州省88县灾害点详细信息而开发。为方便野外和室内工作人员的使用，在功能上除单纯的属性数据的采集录入、分析统计外还结合了GIS的一些基本功能，如野外线路的选择，GPS的实时定位，各区县专题图的生成出图等。同时该系统所收集的现势资料和历史资料能以.MDB的形式导出到贵州省国土资源厅“一张图”工程的Oracle数据库中，作为其地灾子系统决策支持和信息发布的确实依据。 The system, using C/S fat client development mode, is developed for collecting disaster points information of 88 counties in Guizhouprovince. For the convenience of field and indoor work personnel to use, on the function of not only the attributes of data collection, analysis and statistics but also combines some of the basic functions of GIS, such as field line selection, combined with the GPS real-time positioning, the District of thematic map is generated out of. At the same time real-time and historical data collected by the system can be in the form of .MDB export to Guizhou Office of province land natural resources “a map” project Oracle database, as its disaster system decision support and information release was based on.

Green Computing Under Cloud Environment Proposed architecture using cloud computing & thin client

Private Cloud computing provides attractive & cost efficient Server Based Computing (SBC). The implementation of Thin client computing for private cloud computing will reduce the IT Cost and consumes less power. Most cloud services run in browser based environment so we don't need a fat client to use in the private Cloud environment. Implementing Thin Client Technology along with Private Cloud Computing will help to reduce the IT Operational Cost by 90% by saving power, space and maintenance. It requires only minimal power for cooling the Infrastructure. Thin Client with private Cloud Computing can be referred as purest form of green computing & carbon free computing.

ACM CTO Roundtable on Mobile Devices in the Enterprise

BlackBerry? iPhone? Android? Other? Thin client or fat client? Browser or Wi-Fi? Developers of mobile applications have many variables to consider in a rapidly changing environment. The mobile device market is growing quickly and fragmenting as it does so. Supporting mobile devices in the enterprise is getting much more complicated because of both this rapid growth worldwide and the diverse set of devices and networks.

Comparative analysis of reporting mechanisms based on XML technology

Comparative analysis of reporting mechanisms based on XML technology is presented in the paper. The analysis was carried out as the part of the process of selecting and implementing of reporting mechanisms for a cadastre information system. The reports were designed for two versions of the system, i.e. for the internet system based on PHP technology and the fat client system in two-layer client-server architecture. The reports for the internet system were prepared using XSLT for HTML output and using XML-FO for PDF output and compared with reports implemented using Free PDF library. Each solution was tested by means of the Web Application Stress Tool in order to determine what limits in scalability and efficiency could be observed. As far as the desktop system is concerned three versions of reporting mechanisms based on Crystal Reports, Microsoft Reporting Services and XML technology were accomplished and compared with the mean execution time as the main criterion.

Real-Time Environmental Visualization with Web3D

A project that uses a real-time web-based visualization approach for environmental modeling by integrating a geographic information system (GIS) with virtual reality modeling language and Java was explored. A new technique, the server push approach, is developed to “push” only up-to-date data from the remote server to the client and consequently reduce network traffic across the Internet. A fat client model is adopted to host the GIS environmental data model on the Internet. Online data hosting boosts interactivity, swift and transparent communication, user access, and cost-efficiency. These data can be analyzed online by using a GIS and the numerical functions embedded in Web3D-based Java applets. The spatially distributed GIS-based model used to generate data on catchment hydrology and runoff (the topography-based hydrological model; TOPMODEL) accepts incoming information and facilitates real-time simulation.

Moving the business logic tier to the client. Cost‐effective distributed computing for the WWW

AbstractThe Internet and the WWW have encouraged the adoption of a three‐tiered architectural style as the general framework for distributed computing. The thin client concept associated with this model is the most suitable for the WWW, because it can be easily mapped to the browser concept. Additionally, the separation of business logic (middle tier) and back‐end services enable further flexibility for the design of this kind of service. Nevertheless, the advent of platform‐independent software models like Java and the availability of common off‐the‐shelf services, like FTP or HTTP, offer new opportunities to more classical distributed computing models. In this paper we revisit the two‐tiered model for Internet environments, and show that the fat client (user interface plus business logic) may still be valid, at least in some environments. We propose two solutions to provide full FTP access from a Java applet. Copyright © 2001 John Wiley & Sons, Ltd.