this paper presents an interval-parameter stochastic programming (ISP) approach for supporting ecological restoration of degraded mud flat ecosystem under mud flat ecological restoration cost uncertainties. ISP is cap...
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ISBN:
(纸本)9781538650394
this paper presents an interval-parameter stochastic programming (ISP) approach for supporting ecological restoration of degraded mud flat ecosystem under mud flat ecological restoration cost uncertainties. ISP is capable of performing mud flat ecological system analysis, ecological restoration cost uncertainty analysis, and solution block screening in a comprehensive and systematic way. A mud flat ecological restoration problem is used to demonstrate the applicability of the proposed ISP approach. the results indicate that solution block can be generated for the objective function and decision variables, and a variety of decision alternatives of solution block can be obtained under different cost uncertainty scenarios.
In current wireless sensor network (WSN) applications, especially in Internet of things or in-network processing scenarios, the WSN nodes are required not only to execute local processing individually but also to coll...
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ISBN:
(纸本)9781538647882
In current wireless sensor network (WSN) applications, especially in Internet of things or in-network processing scenarios, the WSN nodes are required not only to execute local processing individually but also to collaborate for completing the periodical global tasks. Due to the complexity of joint task allocation problem, most of the existing approaches are restricted to distribute either only the local or global tasks. this work overcomes this limitation. It firstly proposes a static joint task allocation algorithm (SJTA) based on binary integer linear programming. Secondly, this work further presents a dynamic joint task allocation algorithm (DJTA) using linear programming, in order to achieve more balanced task distribution. Simulation results show that DJTA and SJTA significantly outperform previous approaches. they extend the network lifetime by up to 10 times longer than no scheduling strategy.
the aim of this research is to develop a more accurate method to detect unreliable news articles without considering the article content. Fake news articles are defined here as those articles which consist entirely of...
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ISBN:
(数字)9781728182063
ISBN:
(纸本)9781728182070
the aim of this research is to develop a more accurate method to detect unreliable news articles without considering the article content. Fake news articles are defined here as those articles which consist entirely of intentionally fabricated unreliable news. the approach taken in this work to detect fake news articles was to consider the type and frequency of HTML tags used in articles. By comparing the counts for HTML tags used in reliable and unreliable online articles, it was found that there are distinct differences between the HTML tags used in the two types of article sources (unreliable or reliable). Two datasets were used with different labelling of ground truth. the first dataset used, NELA 2017 (News Landscape 2017), comprises 136,000 news articles, obtained from 92 different news sources, dated between April 2017 and October 2017. the sources of the articles in NELA 2017 were categorized as either reliable or unreliable, using a media bias fact-checker resource and this was used to label the articles as either reliable or unreliable. the FakeNewsNet dataset is comprised of over 15000 news articles and tweets obtained from a fact-checking website, Gossip Cop, and has preassigned ground truth labels (fake or real). After analysis of NELA 2017, it was found that unreliable articles have 166 tags that were never used by the reliable articles and that there are 8 HTML tags that are used only in the reliable articles. Based on these findings, classification algorithms were employed on the extracted HTML tags. Experimental results show that the KNN classifier (k-nearest neighbors) and the CART classifier (classification and regression tree) give the best performance, having accuracies of around 97% when 10-fold cross-validation was implemented on the NELA 2017 dataset. Accuracies of around 72% were found when the same techniques were applied to the FakeNewsNet dataset. Using the NELA dataset, a comparison was also carried out between this new approach and two o
the existing UFLS schemes suggested for conventional power systems need to be reassessed in the presence of renewable energy sources and storage systems equipped with grid-supporting convertors. A new Event-Based Unde...
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Providing energy to areas isolated from the electricity grid through the use of a smart integrated renewable energy system (SIRES) is based on the Agenda 2030 for Sustainable Development, specifically Goal 7, accordin...
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ISBN:
(纸本)9781728116921
Providing energy to areas isolated from the electricity grid through the use of a smart integrated renewable energy system (SIRES) is based on the Agenda 2030 for Sustainable Development, specifically Goal 7, according to the United Nations (UN). this study analyzes the process of identifying the appropriate size of a SIRES considering technical and economic factors (cost of energy-COE). An optimization integer linear programming model proposed was used, and a subsequent spatial-temporal analysis of the different variables was conducted. the model comprises locally available renewable energy resources, such as biomass, biogas, wind power, solar photovoltaic, and thermal power. Furthermore, it could be used to determine the energy potential of each of the isolated villages, identifying those areas in which the SIRES could be implemented as a sustainable and economical solution. the design simulates the cost of the initial investment and energy generation in the chosen village. the study also includes the study case in the region of Valparaiso, Chile. Different scenarios were used to optimize the available resources and minimize the COE generation.
Military manpower planning aims to match the required and available staff. Statutory and competence logics are two linked aspects of the military manpower management. Military manpower management involves the long ter...
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Server migration service (SMS) has been proposed as a new class of service to augment the existing IaaS (Infrastructure as a Service) cloud service. SMS allows servers (server-side processes of a network application) ...
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ISBN:
(纸本)9781538668313
Server migration service (SMS) has been proposed as a new class of service to augment the existing IaaS (Infrastructure as a Service) cloud service. SMS allows servers (server-side processes of a network application) to dynamically and automatically migrate close to their clients (client-side processes of the network application) in order to reduce the penalty that the SMS provider pays to its SMS subscribers when failing to provide them withthe guaranteed level of QoS. In this paper, we tackle a link capacity provisioning and server location decision problem where we consider the sum of link capacity provisioning cost and the penalty as the total expenditure of SMS business, and aim at minimizing the total expenditure. In the problem, we determine how much capacity to add to links, and when and to which location to migrate servers. We formulate the problem as an integer programming model, solve the model, and obtain the optimal link capacities, server locations at each time, and the global optimum value of the total expenditure of SMS business. Numerical examples show that the proposed method decreases the total expenditure of SMS business by up to 49% compared to a conventional method that determines the server locations while fixing the link capacities.
this paper presents an energy and water management strategy in an autonomous multisource (photovoltaic, wind, battery) system powering hydraulic (pump and water tank) and electrical loads. the proposed strategy is bas...
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ISBN:
(纸本)9781538659823
this paper presents an energy and water management strategy in an autonomous multisource (photovoltaic, wind, battery) system powering hydraulic (pump and water tank) and electrical loads. the proposed strategy is based on the pump power modulation. the fuzzy logic is used to define the pump's rate power. Afterwards, a linear programing algorithm decides about the connexion status of the sources and electrical loads. the targeted goal is to cover the load needs and to efficiently use the battery. the elaborated strategy performances are evaluated by caseworks, using a load profile, a water consumption profileand real meteorological data of Gandon site in Senegal. the results show that the loads and the needs in water are covered at a 100%. Energy sources production presents an excess of 18%.the water level in the tank is always maintained above the defined critical threshold. Beyond the satisfactory water threshold in the tank, the battery is the main storage device.
After the industrial revolution,the level of productivity has greatly improved,and the social economy has developed *** the same time,science and technology have also made rapid progress under the economic *** a produ...
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After the industrial revolution,the level of productivity has greatly improved,and the social economy has developed *** the same time,science and technology have also made rapid progress under the economic *** a product of modern science and technology,Internet has made an indelible contribution to human *** this context,the Java programming language based on computer software development has also entered people’s field of vision,and has received widespread *** paper is to briefly introduce some of the origins,characteristics and main applications of the Java programming language in people’s production and life.
the last mile in disaster relief distribution chain is the delivery of goods from a central warehouse to the evacuation centers assigned for a given area. Its effectiveness relies on the proper allocation of each kind...
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the last mile in disaster relief distribution chain is the delivery of goods from a central warehouse to the evacuation centers assigned for a given area. Its effectiveness relies on the proper allocation of each kind of relief good amongst the demand areas on a given frequency. Because these operations involve a limited supply of relief goods, vehicles, and time, it is important to optimize these operations to satisfy as much demand as possible. the study aims to create a linear programming model which provides a set of recommendations on how the current disaster relief supply chain may be carried out, specifically on how distribution operations allocate supplies among demand nodes as well as the routes taken in a day. the areas visited per day would depend on the capacity of the vehicle fleet as well as on the routes that can be used. this linear programming model will use Balcik's last mile distribution model, while modifying it for the relief operations in the Philippines. the model minimizes routing costs as well as penalty costs for unsatisfied demands. Map data is used for determining routes and historical data from previous disasters are used to determine the supply and demand for relief goods while providing a benchmark for results. the model produces recommendations for (1) Demand node schedule, (2) Best route for schedule, (3) Relief good allocation, and (4) Operational costs. It also provides the computational backbone for relief distribution decisions in the Philippines, allowing for more optimal operations in the future. (C) 2018 the Authors. Published by Elsevier Ltd.
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