Scopus: Journal of East African Ornithology最新文献_第9页

Uncertainty Quantification of Energy Harvesting Systems Using Method of Quadratures and Maximum Entropy Principle 利用正交法和最大熵原理对能量收集系统的不确定性进行量化

Scopus: Journal of East African Ornithology Pub Date : 2015-09-21 DOI: 10.1115/SMASIS2015-9026

Aditya Nanda, M. Karami, P. Singla

{"title":"Uncertainty Quantification of Energy Harvesting Systems Using Method of Quadratures and Maximum Entropy Principle","authors":"Aditya Nanda, M. Karami, P. Singla","doi":"10.1115/SMASIS2015-9026","DOIUrl":"https://doi.org/10.1115/SMASIS2015-9026","url":null,"abstract":"This paper uses the method of Quadratures in conjunction with the Maximum Entropy principle to investigate the effect of parametric uncertainties on the mean power output and root mean square deflection of piezoelectric vibrational energy harvesting systems. Uncertainty in parameters of harvesters could arise from insufficient manufacturing controls or change in material properties over time. We investigate bimorph based harvesters that transduce ambient vibrations to electricity via the piezoelectric effect. Three varieties of energy harvesters — Linear, Nonlinear monostable and Nonlinear bistable are considered in this research.This analysis quantitatively shows the probability density function for the mean power and root mean square deflection as a function of the probability densities of the excitation frequency, excitation amplitude, initial deflection of the bimorph and magnet gap of the energy harvester. The method of Quadratures is used for numerically integrating functions by propagating weighted points from the domain and evaluating the integral as a weighted sum of the function values. In this paper, the method of Quadratures is used for evaluating central moments of the distributions of rms deflection and mean harvested power and, then, in conjunction with the principle of Maximum Entropy (MaxEnt) an optimal density function is obtained which maximizes the entropy and satisfies the moment constraints. The The computed nonlinear density functions are validated against Monte Carlo simulations thereby demonstrating the efficiency of the approach. Further, the Maximum Entropy principle is widely applicable to uncertainty quantification of a wide range of dynamic systems.Copyright © 2015 by ASME","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1115/SMASIS2015-9026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63521182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

New theoretical frontiers for corporate social responsibility: The corporate role in sustainable development of territories [Novas fronteiras teóricas para a responsabilidade social empresarial: O papel das empresas no desenvolvimento sustentável dos territórios] 企业社会责任的新理论前沿:企业在区域可持续发展中的作用[企业社会责任的新理论前沿:企业在区域可持续发展中的作用]

Scopus: Journal of East African Ornithology Pub Date : 2015-09-01 DOI: 10.24857/RGSA.V9I3.1051

Raquel Oliveira Wildhagen, A.S.S. Teodósio, Yasmine Santos Mansur, Jorge Andrés Polanco

引用次数: 2

Investment decisions in modular product development 模块化产品开发中的投资决策

Scopus: Journal of East African Ornithology Pub Date : 2015-08-27 DOI: 10.3139/9781569904923.008

A. Yassine

引用次数: 2

Keeping the score: outreach services and collaboration for academic music libraries in financially straitened times 保持分数:外联服务和合作的学术音乐图书馆在财政困难时期

Scopus: Journal of East African Ornithology Pub Date : 2015-07-29 DOI: 10.1108/LM-06-2014-0063

Petros A Kostagiolas, Χαρίλαος Λαβράνος, Κωνσταντίνα Μαρτζούκου, Ιωσήφ Παπαδάτος, Petros A Kostagiolas, Konstantina Martzoukou, Charilaos Lavranos, J. Papadatos

{"title":"Keeping the score: outreach services and collaboration for academic music libraries in financially straitened times","authors":"Petros A Kostagiolas, Χαρίλαος Λαβράνος, Κωνσταντίνα Μαρτζούκου, Ιωσήφ Παπαδάτος, Petros A Kostagiolas, Konstantina Martzoukou, Charilaos Lavranos, J. Papadatos","doi":"10.1108/LM-06-2014-0063","DOIUrl":"https://doi.org/10.1108/LM-06-2014-0063","url":null,"abstract":"Purpose – The purpose of this paper is to study the role of academic music libraries in financially straitened times. The academic music library aims to cover the information needs of the academic community; yet the unique nature of music information also allows academic libraries to develop services for a broad spectrum of different user groups. Design/methodology/approach – The theoretical analysis is supported by empirical evidence from a nationwide survey in Greece. The survey was carried out from July to September 2013 and presents results from interviews with the directors of all academic music libraries in Greece. Findings – The results suggest that the period of economic crisis is also a period of challenges and innovation for music libraries which calls them to redefine policies and priorities, and further consider the needs and expectations of wider audiences, i.e. musicians outside the academic community. The financial downturn can be seen as an opportunity for restructuring the academic music ...","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1108/LM-06-2014-0063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62224887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Multi-domain diversity preservation to mitigate particle stagnation and enable better pareto coverage in mixed-discrete particle swarm optimization 在混合离散粒子群优化中，多域多样性保留可减轻粒子停滞并实现更好的帕累托覆盖

Scopus: Journal of East African Ornithology Pub Date : 2015-06-22 DOI: 10.2514/6.2015-2944

Weiyang Tong, Souma Chowdhury, A. Messac

引用次数: 0

Enabling the statistical calibration of active nitridation of graphite by atomic nitrogen 实现了石墨原子氮活性氮化的统计校准

Scopus: Journal of East African Ornithology Pub Date : 2015-06-22 DOI: 10.2514/6.2015-2665

P. Bauman

引用次数: 4

Impact of additive manufacturing adoption on future of supply chains 增材制造对未来供应链的影响

Scopus: Journal of East African Ornithology Pub Date : 2015-06-08 DOI: 10.1115/MSEC20159392

A. Mashhadi, Behzad Esmaeilian, S. Behdad

{"title":"Impact of additive manufacturing adoption on future of supply chains","authors":"A. Mashhadi, Behzad Esmaeilian, S. Behdad","doi":"10.1115/MSEC20159392","DOIUrl":"https://doi.org/10.1115/MSEC20159392","url":null,"abstract":"Although separation of product design from manufacturing capabilities is a major advantage of Additive Manufacturing (AM), the impact of AM is not only limited to the design and manufacturing stages. In addition to the freedom of design such as elimination of design constraints, material saving, and free complexity, AM offers other potential benefits to the manufacturing industry as well. One of the most immediate potentials of AM is the possibility of more efficient logistics. This paper aims at describing the characteristics and requirement of a Supply Chain (SC) as well as the changes AM will bring into the current structure of supply chain. Insights are provided on the transformative effects of AM on traditional businesses, and how these changes impact the configuration of a supply chain. The potential for using simulation tools to evaluate AM supply chain have been discussed. Further, two examples of Agent Based Simulation (ABS) and System Dynamics (SD) have been provided to show the application of simulation models. The ABS results show the possibility of lead time reduction in AM based supply chain. In addition, the SD model illustrates the potential for less ‘pipeline’ effect in AM compared to traditional supply chain.Copyright © 2015 by ASME","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63520182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28

Hydrodynamics of confined impinging jets and the assessment of soil erodibility 受限冲击射流流体力学与土壤可蚀性评价

Scopus: Journal of East African Ornithology Pub Date : 2015-05-14 DOI: 10.1061/9780784479162.170

S. Ghaneeizad, Maliheh Karamigolbaghi, J. Atkinson, S. Bennett

{"title":"Hydrodynamics of confined impinging jets and the assessment of soil erodibility","authors":"S. Ghaneeizad, Maliheh Karamigolbaghi, J. Atkinson, S. Bennett","doi":"10.1061/9780784479162.170","DOIUrl":"https://doi.org/10.1061/9780784479162.170","url":null,"abstract":"Analysis and prediction of soil and water management problems require accurate assessment of the erodibility of cohesive sediment. The Jet Erosion Test (JET) has been developed to quantify the erodibility of soil and other cohesive sediments based on theory derived for circular impinging jets. The JET is now an ASTM standard used commonly around the world, yet the physical characteristics of the impingement jet in the apparatus have not been evaluated in detail. A recent study by the authors demonstrated that a confined environment produces variations in jet properties, in comparison with impinging jet theory. Here, we report on detailed measurements of shear stress in the JET apparatus acting on a flat plate representing a soil surface to be tested. The flow field was quantified at high temporal and spatial resolution with 2D particle image velocimetry. Results show that (1) applied surface shear stress is significantly larger than that predicted by impinging jet theory and assumed by JET methodology, (2) the maximum scaled wall shear stress increases with increasing nozzle velocity, and (3) the wall jet characteristics are asymmetric within the apparatus. These results provide the basis for understanding the erosion process in the JET. This study should improve confidence in employing the JET for determining the erodibility of cohesive sediments in field applications.","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"1 1","pages":"1742-1751"},"PeriodicalIF":0.0,"publicationDate":"2015-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1061/9780784479162.170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58577269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Cultural Industries and Aesthetics: A Crawl on their Possible Relationship 文化产业与美学:略论两者可能的关系

Scopus: Journal of East African Ornithology Pub Date : 2015-04-01 DOI: 10.5294/PACLA.2015.18.2.8

Carlos Andrés Arango-Lopera

引用次数: 1

Radio and Culture: A Proposed Citizens Internet Radio 广播与文化:一个拟议中的公民网络广播

Scopus: Journal of East African Ornithology Pub Date : 2015-04-01 DOI: 10.5294/pacla.2015.18.2.7

Mauricio Andrés Álvarez-Moreno, Sandra Catalina Vásquez-Carvajal

{"title":"Radio and Culture: A Proposed Citizens Internet Radio","authors":"Mauricio Andrés Álvarez-Moreno, Sandra Catalina Vásquez-Carvajal","doi":"10.5294/pacla.2015.18.2.7","DOIUrl":"https://doi.org/10.5294/pacla.2015.18.2.7","url":null,"abstract":"This article is the result of research project to qualify for a Master's degree \"La Pena Cultural: model citizen Internet radio\" carried out during 2013 and 2014 for Universidad de Medellin. It explored the Internet radio as a platform with multimedia tools that could strengthen the formation of reflective citizenship through content of cultural promotion. Similarly, it identifies, from a tracking station in Colombia, how these tools -social networks, podcasts, chats, video channels and new ways to communicate- allow the active participation of citizens in their production. Rescuing the use of technologies that facilitate communication, such as Internet radio, to recognize and retrieve the value of their own cultural promotion of a state in order to form a reflective citizenship, it is the approach that was made from the ethnographic and applied research and is now presented in this article. It is the way in which citizens could converge in a medium to produce content that will strengthen their cultural identity or, if you will, their vision of the nation. It is a commitment to establish an alternative to the traditional models, a guide to the community interested in promoting a reflexive citizen of cultural heritage.","PeriodicalId":38571,"journal":{"name":"Scopus: Journal of East African Ornithology","volume":"18 1","pages":"475-498"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71158170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3