Modifications To Web Processing Service Standard For Client-Side Geoprocessing

Nowadays we see the rapid growth of solutions number for geospatial data processing in the Web (i.e. geoprocessing). One of the main trends of Web geotechnologies evolution is the transition from Web map applications to the Web GIS applications, which are supplement the maps delivery with the analytic tools providing to the end user through Web interface. In fact, the only general open standard describes implementation rules for Web geoprocessing services. This is the Open Geospatial Consortium Web Processing Service standard, which is fully server-oriented. Moreover, the vast majority of currently used solutions (both open source and proprietary) are server-oriented, i.e. assume the server resources only as the computational resource. However, some researchers underline that it is possible way to transmit the executable code to the client for client-side computations and geoprocessing. Also, some general Web architecture concepts assume the effectiveness of client-side computations, e.g. Fog Computing concept. Our practical experience also shows that in some cases it is useful to have ability of client-side geoprocessing, which is not opposite but complement technology to the server-side processing technologies. In addition, we believe that it is more useful to have the ability to run the same processing tool by choice on server or client side. We name such double-sided services as Hybrid Geoprocessing Web Services. We study and discuss the approaches to gap filling in client-side geoprocessing general schema. For this purpose, we implemented previously the getProcess request as addition to the WPS protocol. Additionally at the previous steps of our study, we proposed a possible structure of getProcess request and draft XML file structure for its response, which describes the list of executable resources and their dependencies. Currently we working on detailed methodology of processing tools implementation and testing. We use the Python programming language as primary development tool, because of its applicability to build both server- and client-side crossplatform processing tools using single core program code. We use Python also for implementation of needed infrastructure components, such as HGWS server that supports the getProcess request/response performing, and client-side Runtime Environment that provides executable code orchestration on the client. Achieved results need to be discussed widely and carefully. However, main conclusion of our current work is that client-side geoprocessing schema in general could be relatively simple and compatible backward with current standards. The HGWS concept is applicable when implementing client-side geoprocessing Web services in small-scale projects and could be the entering point for study of distributed geoprocessing systems implementation

Load Testing of Vaadin Flow applications

All types of businesses, from small start-ups to big enterprises, have an online presence. Their web pages and applications can be used to acquire products ans services and are thus expected to be efficient. Yet, the web environment imposes additional requirements on software, such as the need for reliable security and adequate response times. To ensure these requirements are met and the product is of the expected quality, various types of testing are utilized during development. This master’s thesis evaluates a procedure for verifying a non-functional requirement of a web application – its performance. It focuses on load testing, which is used to analyze and assess an application’s behavior with different user loads. The scope of applications is limited to server-side applications that are developed with the latest long-term support version of the Vaadin framework. The effects of the performance arising from the server-side architecture of the framework and the Java ecosystem are reviewed. Furthermore, an overview of available improvement techniques, such as cache and load balancers, is given. From a load testing perspective, the biggest challenges that arise from Vaadin’s architecture are its unique features. These include node values of user interface components, synchronization and Cross-Site Request Forgery protection tokens. The defined universal regular expressions that capture these attributes can be used again later. The main contribution of this thesis is formulating a ready-to-use method of load testing a Vaadin Flow application. Once established and analyzed, the method is then applied to a real-life situation to verify its applicability and usefulness. Two widely used load testing tools are utilized – JMeter and Gatling. Furthermore, a method to estimate a web application’s session size is presented. Potential bottlenecks and other potential issues are identified by using a profiled to track the application’s memory consumption during a test run. After the load test is finalized and completed, a session size estimation is conducted. As a result of test execution, a potential bottleneck is identified and fixed in the application. Complete test plans for both JMeter and Gatling are defined and implemented. Alternatives and possible improvements to the proposed solution are reviewed. Based on the literature review, when deploying an application on multiple servers, the best solution is enabling the sticky sessions feature

Sistem Informasi Geografis Mencari Rute Lokasi Travel Di Kota Palangka Raya Berbasis Website

Transport service or usually called travel1 is an inter-city transportation that many people use in Palangkaraya to travel among the cities. However, many people do not know the location of transport services in Palangkaraya and the informations obtained is still limited. Thus a system that provides computerized geographic information is needed. This study discusses the mapping of locations of transport services, location search, location data filters and the determination of the shortest path using the Dijkstra algorithm. For system development, it will apply the waterfall method. It is expected that the availability of a web-based system as a place to provide geographic information on the location of travel services is presented using the Google map API. In this study, the testing results for determining the shortest route on the public transport route can be determined by the Dijkstra algorithm. The transportation route is considered as a directed and weighted graph; the point represents a stop, and; side is as a vehicle lane. In the testing, firstly the user  inputs the starting point on the map then looks for the destination on the destination search map, the system will display the initial shortest route output to the destination

Web Service Testing and Usability for Mobile Learning

Based on the summary of recent renowned publications, Mobile Learning (ML) has become an emerging technology, as well as a new technique that can enhance the quality of learning. Due to the increasing importance of ML, the investigation of such impacts on the e-Science community is amongst the hot topics, which also relate to part of these research areas: Grid Infrastructure, Wireless Communication, Virtual Research Organization and Semantic Web. The above examples contribute to the demonstrations of how Mobile Learning can be applied into e-Science applications, including usability. However, there are few papers addressing testing and quality engineering issues – the core component for software engineering. Therefore, the major purpose of this paper is to present how Web Service Testing for Mobile Learning can be carried out, in addition to re-investigating the influences of the usability issue with both quantitative and qualitative research methods. Out of many mobile technologies available, the Pocket PC and Tablet PC have been chosen as the equipment; and the OMII Web Service, the 64-bit .NET e-portal and the GPS-PDA are the software tools to be used for Web Service testing

Proposing a secure component-based-application logic and system’s integration testing approach

Software engineering moved from traditional methods of software enterprise applications to com-ponent based development for distributed system’s applications. This new era has grown up forlast few years, with component-based methods, for design and rapid development of systems, butfact is that , deployment of all secure software features of technology into practical e-commercedistributed systems are higher rated target for intruders. Although most of research has been con-ducted on web application services that use a large share of the present software, but on the otherside Component Based Software in the middle tier ,which rapidly develops application logic, alsoopen security breaching opportunities .This research paper focus on a burning issue for researchersand scientists ,a weakest link in component based distributed system, logical attacks, that cannotbe detected with any intrusion detection system within the middle tier e-commerce distributed ap-plications. We proposed An Approach of Secure Designing application logic for distributed system,while dealing with logically vulnerability issue

Cloud based testing of business applications and web services

This paper deals with testing of applications based on the principles of cloud computing. It is aimed to describe options of testing business software in clouds (cloud testing). It identifies the needs for cloud testing tools including multi-layer testing; service level agreement (SLA) based testing, large scale simulation, and on-demand test environment. In a cloud-based model, ICT services are distributed and accessed over networks such as intranet or internet, which offer large data centers deliver on demand, resources as a service, eliminating the need for investments in specific hardware, software, or on data center infrastructure. Businesses can apply those new technologies in the contest of intellectual capital management to lower the cost and increase competitiveness and also earnings. Based on comparison of the testing tools and techniques, the paper further investigates future trend of cloud based testing tools research and development. It is also important to say that this comparison and classification of testing tools describes a new area and it has not yet been done

Keberkesanan carta pembelajaran Omygram terhadap tahap pencapaian pelajar PVMA dalam mata pelajaran Bahasa Inggeris bagi topik plurals

Pembinaan bahan bantu belajar untuk tujuan PdPC sememangnya digalakkan oleh Kementerian Pendidikan Malaysia bagi meningkatkan kualiti pendidikan. Kajian ini bertujuan untuk membangun dan mengenalpasti keberkesanan carta pembelajaran Omygram terhadap tahap pencapaian pelajar PVMA dalam mata pelajaran Bahasa Inggeris bagi topik plurals. Kajian ini adalah kuasi-eksperimen yang melibatkan dua buah sekolah menengah harian di daerah Batu Pahat. Instrumen kajian yang digunakan ialah soalan ujian pra dan pasca, soal selidik dan senarai semak. Dapatan kajian telah dianalisis menggunakan perisian Statistic Package For The Social Science Version 22.0 (SPSS). Analisis deskriptif dalam bentuk frekuensi, peratus, min dan sisihan piawai digunakan semasa penganalisaan data. Ujian-t pula digunakan untuk melihat perbezaan pencapaian antara ujian pra dengan ujian pasca bagi kumpulan rawatan dan kumpulan kawalan. Kumpulan rawatan diberi set soal selidik tentang motivasi pelajar selepas menggunakan carta pembelajaran Omygram dalam PdPC. Hasil dapatan kajian mendapati bahawa, terdapat perbezaan pencapaian yang signifikan antara skor ujian pra dengan skor ujian pasca bagi kumpulan rawatan. Motivasi pelajar selepas menggunakan carta pembelajaran Omygram juga berada pada tahap tinggi