scholarly journals Reliability and capability based computation offloading strategy for vehicular ad hoc clouds

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Bo Li ◽  
Ziyi Peng ◽  
Peng Hou ◽  
Min He ◽  
Marco Anisetti ◽  
...  
Keyword(s):  
System Reliability ◽  
High Performance ◽  
Evaluation Method ◽  
Ad Hoc ◽  
Comprehensive Evaluation ◽  
Autonomous Driving ◽  
Computation Offloading ◽  
Task Completion ◽  
Communication Link ◽  
The Impact

AbstractIn the Internet of Vehicles (IoV), with the increasing demand for intelligent technologies such as driverless driving, more and more in-vehicle applications have been put into autonomous driving. For the computationally intensive task, the vehicle self-organizing network uses other high-performance nodes in the vehicle driving environment to hand over tasks to these nodes for execution. In this way, the computational load of the cloud alleviated. However, due to the unreliability of the communication link and the dynamic changes of the vehicle environment, lengthy task completion time may lead to the increase of task failure rate. Although the flooding algorithm can improve the success rate of task completion, the offloading expend will be large. Aiming at this problem, we design the partial flooding algorithm, which is a comprehensive evaluation method based on system reliability in the vehicle computing environment without infrastructure. Using V2V link to select some nodes with better performance for partial flooding offloading to reduce the task complete time, improve system reliability and cut down the impact of vehicle mobility on offloading. The results show that the proposed offloading strategy can not only improve the utilization of computing resources, but also promote the offloading performance of the system.

Investigation and Evaluation on the Moisture-Absorption and Quick-Drying Properties of Stitch-Bonded Nonwoven Fabrics with Hemp/Polyester Blended Used in Shoe’s Lining

2012 ◽  
Vol 602-604 ◽  
pp. 847-852
Author(s):  
Xin Hao ◽  
Xin Min Hao ◽  
Jian Chun Zhang ◽  
Hong Wei Li ◽  
Gun Jun Zhang ◽  
...  
Keyword(s):  
Evaluation System ◽  
High Performance ◽  
Evaluation Method ◽  
Moisture Absorption ◽  
Comprehensive Evaluation ◽  
Strenuous Exercise ◽  
Variation Method ◽  
Nonwoven Fabrics ◽  
Order Preference ◽  
Drying Properties

Micro-environments of shoes chamber after strenuous exercise were simulated by using self-made experimental device. Under the different conditions of temperature and humidity, moisture absorption, water transmissibility, water retention and moisture liberation of stitch-bonded fabrics with different content of hemp was tested. According to multiple properties of the moisture-absorption and quick-drying, tested performance of five aspects were used to build the evaluation system about it. TOP-SIS (Technique for Order Preference by Similarity to Ideal Solution) and coefficient of variation method can calculate the degree of closeness of actual values and ideal values so as to establish a comprehensive evaluation method. The results show that when content of hemp is nearly 40%, shoe’s lining of stitch-bonded materials can obtain high performance, which can meet the requirement for shoe’s lining.

Based on Reliability Importance Measures Method of Comprehensive Evaluation of Electric Power Communication Equipment

2014 ◽  
Vol 496-500 ◽  
pp. 2725-2728 ◽  
Author(s):  
Hui Sheng Gao ◽  
Xi Peng Qiao ◽  
Hui Fang Wang
Keyword(s):  
Communication Network ◽  
Electric Power ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Importance Measure ◽  
Service Reliability ◽  
Comprehensive Evaluation Method ◽  
Inherent Structure ◽  
The Impact ◽  
Communication Equipment

Currently, the evaluation methods of importance measures such as structure importance measure, criticality reliability importance and B-reliability importance, have some shortcomings that the evaluation results are not comprehensive enough and the scope of usage. In order to accurately evaluate the importance measures of equipment, and to reflect the impact of the equipment on the communication network, a comprehensive evaluation method of importance measure is put forward. According to the influence of inherent structure of system and service reliability, the importance measure of equipment is calculated. By the coefficient modification, it can accurately evaluate comprehensive evaluation of electric power communication equipment based on reliability importance measures. Example result verifies the feasibility and validity of the comprehensive evaluation method.

Comprehensive Evaluation Method Study of University Town Ecological Physical Environment (UTEPE)

2011 ◽  
Vol 374-377 ◽  
pp. 2388-2392
Author(s):  
Bo Wang
Keyword(s):  
Energy Saving ◽  
Physical Environment ◽  
Evaluation Method ◽  
Thermal Environment ◽  
Comprehensive Evaluation ◽  
Construction Materials ◽  
Impact Factors ◽  
Sound Environment ◽  
University Town ◽  
The Impact

The premise that analyzing and studying the factors that effect university town ecological physical environment (UTEPE), UTEPE impact factors are the thermal environment, sound environment, light environment, eco-energy saving design. This paper establishes the evaluation method for UTEPE which is based on fuzzy math. We evaluate the quality of UTEPE comprehensively in this way. Renewable energy, nontraditional water source, green construction materials, water-saving appliances, energy-saving lamps, bicycle & public traffic system are very important for creating good quality physical environment in university town. In this paper, according to the impact factors of the UTEPE and using the fuzzy mathematical theory on evaluating the UTEPE comprehensively can reflect the real situation more objectively and accurately. The construction of model is simple and practical. Comprehensive evaluation utilizes the combination of the general public survey and expert evaluation, which benefits to reflect the democratic spirit. It also provides the reference to improve the UTEPE.

scholarly journals Performance gains in an ESM using parallel ad-hoc file systems

2020 ◽  
Author(s):  
Stefan Versick ◽  
Ole Kirner ◽  
Jörg Meyer ◽  
Holger Obermaier ◽  
Mehmet Soysal
Keyword(s):  
High Performance ◽  
Ad Hoc ◽  
File System ◽  
File Systems ◽  
System Modelling ◽  
Earth System ◽  
Post Processing ◽  
In Situ Data ◽  
The Impact

<p>Earth System Models (ESM) got much more demanding over the last years. Modelled processes got more complex and more and more processes are considered in models. In addition resolutions of the models got higher to improve weather and climate forecasts. This requires faster high performance computers (HPC) and better I/O performance.</p><p>Within our Pilot Lab Exascale Earth System Modelling (PL-EESM) we do performance analysis of the ESM EMAC using a standard Lustre file system for output and compare it to the performance using a parallel ad-hoc overlay file system. We will show the impact for two scenarios: one for todays standard amount of output and one with artificial heavy output simulating future ESMs.</p><p>An ad-hoc file system is a private parallel file system which is created on-demand for an HPC job using the node-local storage devices, in our case solid-state-disks (SSD). It only exists during the runtime of the job. Therefore output data have to be moved to a permanent file system before the job has finished. Quasi in-situ data analysis and post-processing allows to gain performance as it might result in a decreased amount of data which you have to store - saving disk space and time during the transfer of data to permanent storage. We will show first tests for quasi in-situ post-processing.</p>

Comprehensive Evaluation Method Study of Urban Pavement Ecological Physical Environment (UPEPE)

2013 ◽  
Vol 278-280 ◽  
pp. 2304-2307
Author(s):  
Bo Wang
Keyword(s):  
Physical Environment ◽  
Evaluation Method ◽  
Thermal Environment ◽  
Comprehensive Evaluation ◽  
Impact Factors ◽  
Comprehensive Evaluation Method ◽  
Public Survey ◽  
Sound Environment ◽  
Fuzzy Math ◽  
The Impact

The premise that analyzing and studying the factors that affect urban pavement ecological physical environment (UPEPE), UPEPE impact factors are the thermal environment, sound environment, light environment, eco-energy saving design. This paper establishes the evaluation method for UPEPE which is based on fuzzy math. We evaluate the quality of UPEPE comprehensively in this way. Heat, light, sound and other ecological and physical environment effects are very important for creating good quality physical environment in urban pavement. In this paper, according to the impact factors of the UPEPE and using the fuzzy mathematical theory on evaluating the UPEPE comprehensively can reflect the real situation more objectively and accurately. The construction of model is simple and practical. Comprehensive evaluation utilizes the combination of the general public survey and expert evaluation, which benefits to reflect the democratic spirit. It also provides the reference to improve the UPEPE.

scholarly journals Analysis of the Impact of Climate Change on National Vulnerability Based on Fuzzy Comprehensive Evaluation

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Jia-Ming Zhu ◽  
Yang Chen ◽  
Su Zhang
Keyword(s):  
Climate Change ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Analysis Model ◽  
Comprehensive Evaluation Method ◽  
Impact Of Climate Change ◽  
The Impact ◽  
Vulnerability Score ◽  
Relevant Factors

Climate change has become one of the major threats to global security. On the impact of climate change on national vulnerability, the researchers firstly select relevant factors and data and analyze the principal components to determine the weight of climate change on vulnerability so as to analyze the impact of climate change on national vulnerability. Secondly, based on the influencing factors, we obtain the national vulnerability score through the fuzzy comprehensive evaluation method, delineate the impact scope according to the score, and predict climate change by means of regression analysis and time series analysis. Finally, according to the characteristics of cities and continents, the model is revised, a PSR model and a cluster analysis model are established, and the prediction accuracy is improved.

Research on Ecological Integration of Mountain Highway Domain Ecosystems

2013 ◽  
Vol 726-731 ◽  
pp. 4109-4114
Author(s):  
Jin Song Shi ◽  
Bo Hu ◽  
Hou Cou Sun ◽  
Qin Tao Wang
Keyword(s):  
Theoretical Basis ◽  
Ecosystem Health ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Measurement Model ◽  
Comprehensive Evaluation Method ◽  
The Road ◽  
Ecological Protection ◽  
The Impact ◽  
Road Domain

This paper analyzed the impact of the mountain highway on road domain ecosystems, and defined the concept and content of the road domain ecosystem ecological integration and its relationship with ecosystem health. Based on PSR framework, the ecological integrated measurement model was built. By constructing various subsystems indicators, the road domain ecosystem ecological integration was quantified by using the comprehensive evaluation method. On this basis, this paper divided the ecological integration into four grades: poor, moderate, good and excellent. It provided a theoretical basis for the ecological protection and restoration of the mountain highway construction.

scholarly journals Evaluation and Optimization of Walkability of Children’s School Travel Road for Accessibility and Safety Improvement

2021 ◽  
Vol 19 (1) ◽  
pp. 71
Author(s):  
Jia Zhao ◽  
Wei Su ◽  
Jiancheng Luo ◽  
Jin Zuo
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Management Strategies ◽  
Evaluation Index System ◽  
Impact Factors ◽  
School Travel ◽  
Syntax Analysis ◽  
Walking To School ◽  
The Impact ◽  
Pedestrian Accessibility

(1) Background: In the context of a children friendly city, accessibility and safety are the basic needs of children’s pedestrian school travel. This study proposes a comprehensive evaluation method of pedestrian accessibility and safety for children’s school travel. (2) Methods: Firstly, the school travel network was constructed by simulating the path of children walking to school. Secondly, from the meso and micro dimensions, the impact factors of pedestrian accessibility and safety were combed out, and an evaluation index system was constructed. Finally, pedestrian accessibility and safety were evaluated based on the Space Syntax analysis and ArcGIS spatial analysis, and the results were superimposed and spatially differentiated. The new evaluation method was tested in the Jintang Road area in Hedong District, Tianjin, China. (3) Results: The pedestrian accessibility and safety of children’s school travel road in the study area needed to be improved. It was found that the main impact factors were the effective walking width, the spatial connectivity, the visual integration, the obstruction of pedestrian safety, the completeness of crossing facilities and the influence of traffic flow and put forward optimization strategies. After optimized simulation verification, the overall improvement was achieved. (4) Conclusion: The evaluation method is helpful to calculate the pedestrian accessibility and safety of children’s school travel, and help decision makers determine the design and management strategies of child-friendly streets.

Accelerating I/O in ESMs using on demand filesystems

2021 ◽  
Author(s):  
Stefan Versick ◽  
Thomas Fischer ◽  
Ole Kirner ◽  
Tobias Meisel ◽  
Jörg Meyer
Keyword(s):  
High Performance ◽  
Ad Hoc ◽  
File System ◽  
File Systems ◽  
Climate Data ◽  
Solid State Disks ◽  
Performance Improvements ◽  
On Demand ◽  
Local Storage ◽  
The Impact

<p>Earth System Models (ESM) got much more demanding over the last years. Modelled processes got more complex and more and more processes are considered in models. In addition resolutions of the models got higher to improve accuracy of predictions. This requires faster high performance computers (HPC) and better I/O performance. One way to improve I/O performance is to use faster file systems. Last year we showed the impact of the ad-hoc file system on the performance of the ESM EMAC. An ad-hoc file system is a private parallel file system which is created on-demand for an HPC job using the node-local storage devices, in our case solid-state-disks (SSD). It only exists during the runtime of the job. Therefore output data have to be moved to a permanent file system before the job has finished. Performance improvements are due to the use of SSDs in case of small chunks of I/O or a high amount of I/O operations per second. Another reason for a performace boost is because the running job can exclusively access the file system. To get a better overview in which cases ESMs benefit from using ad-hoc file systems we repeated our performance tests with further ESMs with different I/O strategies. In total we now analyzed EMAC (parallel netcdf), ICON2.5 (netcdf with asynchronous I/O), ICON2.6 (netcdf with Climate Data Interface (CDI) library) and OpenGeoSys (parallel VTU).</p>

Borrowers satisfaction evaluation from Microfinance institution by Using FCEM

2022 ◽  
Author(s):  
Yan Yunxian ◽  
Munawar Hassan ◽  
Shafqat Iqbal ◽  
Shahbaz Gul Hassan
Keyword(s):  
Poverty Reduction ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Microfinance Institutions ◽  
Level Of Satisfaction ◽  
Degree Of Satisfaction ◽  
Microfinance Institution ◽  
The Government ◽  
The Impact

Abstract Boundless researchers have made efforts to assess the impact of Microfinance on poverty reduction both positively and negatively, but the perception of borrowers about the effectiveness of Microfinance has not been yet found. This study adopts the Fuzzy Comprehensive Evaluation Method (FCEM) in conjunction with the Analytical Hierarchy Process (AHP) to evaluate the level of satisfaction of borrowers with the products and services of microfinance institutions at different criterion levels. The goal is to assess the level of satisfaction for each criterion level under the degree of satisfaction of the borrower about the product and services provided by Microfinance Institution (MFI). Findings show that the claim of MFI was false because study evidence makes it clear that borrowers are not satisfied with the product and services of MFI. In addition to the literature, this study also highlighted the weakness of the MFI product and services. Thus, both the government and the MFIs can improve their performance and change their policies for the welfare of the borrowers.

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