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An Approach for Quality Assessment and Efficiency of a Web-Based System for Distance Learning

, P. Prediction of e-Learning Efficiency by Neural Networks. - Cybernetics and Information Technologies, Vol. 12, 2012, No 2, 98-108. 10. Stojanov , S. Methods and algorithms of optimization. Sofia, Technica, 1990. 11. http://www.sqa.net/iso9126.html

Open access
Factors Influencing Cities’ Publishing Efficiency

’ total publication output or the output of highly cited papers, we should focus on cities’ publishing efficiency (i.e., the ratio of highly cited papers to all papers). Why is it important to measure a city’s publishing efficiency? It can be assumed that the higher the ratio of the number of highly cited papers to all articles produced in a city is, the more likely it is that researchers affiliated with that city conduct research resulting in new scientific breakthroughs (Van Noorden’s study also suggests this nexus). Thus, publishing efficiency shows how successful

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Prediction of e-Learning Efficiency by Neural Networks

Abstract

A model for prediction of the outcome indicators of e-Learning, based on Balanced ScoreCard (BSC) by Neural Networks (NN) is proposed. In the development of NN models the problem of a small sample size of the data arises. In order to reduce the number of variables and increase the examples of the training sample, preprocessing of the data with the help of the methods Interpolation and Principal Component Analysis (PCA) is performed. A method for optimizing the structure of the neural network is applied over linear and nonlinear neural network architectures. The highest accuracy of prognosis is obtained applying the method of Optimal Brain Damage (OBD) over the nonlinear neural network. The efficiency and applicability of the method suggested is proved by numerical experiments on the basis of real data.

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Efficiency Measurement of Project Management Software Usage at State Social Insurance Agency

Abstract

One of the activities for improvement of project management (PM) quality is to introduce or change PM software to a more suitable one for an appropriate project and team. After implementation of the new PM software, it is useful to understand real improvement and effectiveness of the PM software usage. The objective of the present research is to identify characteristics and methods for effectiveness measurement of the PM software usage and demonstrate its application for the case study to measure project team efficiency after the PM software implementation and assess impact of the PM software usage on the project performance. Mann-Whitney test and Spearman correlation coefficient have been used to analyse relevance between the PM software usage characteristics and project performance indicators with the purpose to determine the PM software usage impact on the project performance and PM quality. The case study has been performed at the State Social Insurance Agency. In order to increase PM quality, Redmine (free of charge PM software) has been implemented.

Open access
The Energy Efficiency of Electric Energy as a Traction Used in Transport

References Database of real vehicle fuel consumption; https://www.spritmonitor.de Decarbonisation Pathways, publication of Eurelectric (iniciative of energy industry in Europe, December 2018; https://cdn.eurelectric.org/media/3457/decarbonisation-pathways-h-5A25D8D1.pdf Electropedia – Battery and Energy Technologies – Energy Efficiency; https://www.mpoweruk.com European standard EN 16 258:2012 Methodology for calculation and declaration of energy consumption and GHG emissions of transport services (freight and passengers

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Specification of the Framework for Evaluating the Efficiency of Mechanisms for Concurrent Processes

Abstract

The goal of this paper is to give a specification of the software framework that evaluates the efficiency of different mechanisms for concurrent processes, notably process synchronization mechanisms. The paper discusses the concept of this framework, the potential users of it and some necessary considerations, including assumptions. Further, it defines general requirements for the framework and presents its desired conceptual design. The conclusions and possible directions for future work end the paper.

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The Analysis of Efficiency Dependence of the Shortest Path Finding Algorithms A* and HPA*

Abstract

Many pathfinding problems in real-world applications require real-time computation of the shortest path between two points in a grid-based environment. It is not a trivial task. While some shortest pathfinding algorithms may perform admissibly in one condition, they may prove inadmissible in other conditions. HPA* path finding algorithm is faster and more memory efficient than the A*algorithm in relatively large two dimensional grids, but this advantage may not apply to very small or very large grids. The paper deals with the efficiency of A* and HPA*in two-dimensional grids of different sizes. For the sake of completeness of the analysis, HPA* efficiency is measured taking into consideration the number of hierarchy levels and different cluster sizes. Both algorithms have been implemented and tests conducted. Experimental evidence is proposed to demonstrate the algorithm efficiency in various conditions.

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Development of Control Strategies and Implementation to Electrical Water Heaters for Energy Conservation

Abstract

Optimum design for storage type Electric Water Heaters (EWHs) was analyzed for energy conservation and maximum hot water output. Single and dual tank EWHs were compared with each other. For each comparison, data were gathered for tank volumes and power ratings ranging 100-400land 1-4 k Wrespectively. Different dual tank EWHs were designed with different control mechanisms to find which one had the optimum outcome. For these comparisons, dual tank EWHs in which the upper part of the tanks had 25%of the total volume and 75%of the total power rating were used. Afive day usage period of an EWHinatypical household was simulated on SIMULINK. To minimize this energy loss, transient analysis on FLUENTwas performed to see how long it took for the outlet water temperature. In these simulations, single and dual tank EWHs with different control mechanisms were compared with each other to find the design with minimum energy consumption and maximum hot water output. From these results the most efficient control system cost analysis was determined for minimum operating cost and minimum carbon footprint through optimized control strategies.

Open access
Security-Efficiency Tradeoffs in Searchable Encryption

–368. Springer, Heidelberg (May 2014). [DDF + 16] Devadas, S., Dijk, M., Fletcher, C.W., Ren, L., Shi, E., and Wichs, D. Onion ORAM: A constant bandwidth blowup oblivious RAM. In: E. Kushilevitz and T. Malkin (eds.), TCC 2016-A, Part II, LNCS , vol. 9563, pp. 145–174. Springer, Heidelberg (Jan. 2016). [DPP18] Demertzis, I., Papadopoulos, D., and Papamanthou, C. Searchable encryption with optimal locality: Achieving sublogarithmic read efficiency. In: H. Shacham and A. Boldyreva (eds.), CRYPTO 2018, Part I, LNCS , vol. 10991, pp. 371–406. Springer, Heidelberg (Aug

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Knowledge Acquisition Approach Based On Svm In An Online Aided Decision System For Food Processing Quality And Safety

, Meng Haitao, Chen Xiaorong. A New Method to Advance Efficiency and Generalization of Support Vector Machine. - Journal of Guizhou University, Vol. 1, 2007, 50-53.

Open access