Performance comparison of the Xamarin platform and native applications for Android operating system

The article presents the results of comparative analysis of various tools for creating applications for the Android operating system. Performance analysis was based on applications created using individual frameworks, in particular Xamarin and native software development tools. Several research criteria have been defined, based on which results of performance comparison have been derived and formulated conclusion

The Case for UBUNTU Linux Operating System Performance and Usability for Use in Higher Education in a Virtualized Environment

The use of Linux based Operating Systems (OS) in the classroom is increasing, but there is little research to address usability differences between Windows and Linux based OSs. Moreover, studies related to the ability for students to navigate effectively between Ubuntu 14.04 Long Term Support (LTS) and Windows 8 OSs are scant. This research aims to bridge the gap between modern Linux and Windows Oss, as the former represents a viable alternative to eliminate licensing costs for educational institutions. Preliminary findings, based on the analysis of the System Usability Scale results from a sample of 14 students, demonstrated that Ubuntu users did not require technical support to use the system, while the majority found little inconsistency in the system and regarded it as well integrated

CAMP: A Common API for Measuring Performance

Accurate performance testing of heterogeneous distributed systems, such as those created using GRID technology, requires a consistent method for retrieving system performance data from multiple platforms. This paper presents CAMP: a low-level platform independent performance data API designed for use with distributed testing frameworks. CAMP is not necessarily tied to the distributed testing task: it provides a simple, low-level interface into operating system performance data that can be used to build complex performance measurement applications. This paper discusses CAMP\u27s functionality and implementation in detail. It also contains a detailed analysis of the API\u27s correctness, performance, and overhead

A Comprehensive Experimental Comparison of Event Driven and Multi-Threaded Sensor Node Operating Systems

The capabilities of a sensor network are strongly influenced by the operating system used on the sensor nodes. In general, two different sensor network operating system types are currently considered: event driven and multi-threaded. It is commonly assumed that event driven operating systems are more suited to sensor networks as they use less memory and processing resources. However, if factors other than resource usage are considered important, a multi-threaded system might be preferred. This paper compares the resource needs of multi-threaded and event driven sensor network operating systems. The resources considered are memory usage and power consumption. Additionally, the event handling capabilities of event driven and multi-threaded operating systems are analyzed and compared. The results presented in this paper show that for a number of application areas a thread-based sensor network operating system is feasible and preferable

MAGNET: A Virtual Shared Tuplespace Resource Manager

Traditional operating systems limit flexibility, performance and utilization of hardware resources by forcing applications to use inappropriate high-level abstractions, uniform protection schemes and high-level static resource management. This forced use of inappropriate services results in poor application and operating system performance. A radical new approach to operating systems design and construction is needed to meet the requirements of modern applications. Within our Centre, we are designing BITS: the Component Based Operating System, to address these issues.To realize its full potential, BITS requires a radically new resource management strategy. The operating system design gives an environment for implementing extensions, but a resource manager module is responsible for making them available. It allows system services to be specialized, replaced or extended to better serve application-specific needs.In this paper we propose the MAGNET Resource Manager enabling a free-market negotiation of application requests and server resources. It provides an additional level of flexibility for application participation in resource management. MAGNET also provides a platform for an additional runtime level of extensibility: dynamic modification and replacement of its parts during execution

Kualitas Produk dan Persepsi Harga terhadap Keputusan Pembelian

The purpose of this study was to analyze the influence of product quality and price perceptions on smartphone purchasing decisions (a case study of East Java "Veteran" FEB UPN students. This research method uses quantitative research where the dependent variable is the purchase decision and the independent variable in this study is product quality and price perceptions. Sampling using Accidental Sampling consisted of 80 respondents and data analysis was carried out using the Partial Least Square (PLS) method. The results showed that product quality and price perceptions had a positive effect on purchasing decisions for Samsung smartphones at the Faculty of Economics and Business, National Development University " Veteran "East Java. In conclusion, product quality has good operating system performance for consumers so that it can influence purchasing decisions. Also, the better consumer perceptions of prices such as perceptions of affordability, price compatibility with product quality, price competitiveness, and ability provide benefits to be able to influence purchasing decisions on Samsung smartphone consumers.   Keywords: Purchase Decision, Product Quality, Perceived Pric

Multi-task Implementation for Image Reconstruction of an AER Communication

Address-Event-Representation (AER) is a communication protocol for transferring spikes between bio-inspired chips. Such systems may consist of a hierarchical structure with several chips that transmit spikes among them in real time, while performing some processing. There exist several AER tools to help in developing and testing AER based systems. These tools require the use of a computer to allow the processing of the event information, reaching very high bandwidth at the AER communication level. We propose to use an embedded platform based on multi-task operating system to allow both, the AER communication and the AER processing without a laptop or a computer. We have connected and programmed a Gumstix computer to process Address- Event information and measured the performance referred to the previous AER tools solutions. In this paper, we present and study the performance of a new philosophy of a frame-grabber AER tool based on a multi-task environment, composed by the Intel XScale processor governed by an embedded GNU/Linux system.Ministerio de Ciencia e Innovación TEC2006-11730-C03-0

IBM PC/IX operating system evaluation plan

An evaluation plan for the IBM PC/IX Operating System designed for IBM PC/XT computers is discussed. The evaluation plan covers the areas of performance measurement and evaluation, software facilities available, man-machine interface considerations, networking, and the suitability of PC/IX as a development environment within the University of Southwestern Louisiana NASA PC Research and Development project. In order to compare and evaluate the PC/IX system, comparisons with other available UNIX-based systems are also included