MatSciRN: Other Materials Processing & Manufacturing (Topic)最新文献_第10页

Design and Durability Analysis of Ladder Chassis Frame 梯架底盘框架设计与耐久性分析

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-03-30 DOI: 10.2139/ssrn.3368110

M. Gurjar, Shubham Deshmukh, S. Goswami, V. Mathankar, S. Shrivastava

引用次数: 1

Technical Evaluation of BREEAM-International-NC-2016 for Rating of Sustainable New Construction Outside the UK 英国境外可持续新建筑评级BREEAM-International-NC-2016技术评价

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-03-28 DOI: 10.2139/ssrn.3361488

Hazem R. Bonna, Ahmed S. El-Hakim, Hatem S. El-Behairy

{"title":"Technical Evaluation of BREEAM-International-NC-2016 for Rating of Sustainable New Construction Outside the UK","authors":"Hazem R. Bonna, Ahmed S. El-Hakim, Hatem S. El-Behairy","doi":"10.2139/ssrn.3361488","DOIUrl":"https://doi.org/10.2139/ssrn.3361488","url":null,"abstract":"Worldwide, all the current sustainable rating systems are targeting fair and applicable rating criteria and conditions to best matching the circumstances and sustainable needs of every nation for their environmental conditions, equity needs, and economic concerns. \u0000 \u0000This paper is made to evaluate & measure the compliance of BREEAM-International-NC-2016 sustainable rating system with the sustainability concerns of the new construction market outside the UK through considering Egypt as an example and conducting a detailed comparative analysis between the BREEAM-International-NC-2016 sustainable rating system and the authors' proposed sustainable rating system for new construction in Egypt (Bonna, Hazem (2018)) to highlight most of the missing sustainability rating elements which are necessary for Egypt and not found within the BREEAM-International-NC-2016 rating system. \u0000 \u0000Sev considered that international building assessment tools have difficulties in their implementation in developing countries lacking regional adaptations. The author also added that most of the well-known building environmental assessment tools are not flexible for cultural and regional variations.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91047930","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: 1

Simple Geometrical Aspects of Grain Growth in the Framework of Herring’s Analysis and a Disclination Model 在赫林的分析和一个偏差模型的框架下，谷物生长的简单几何方面

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-03-23 DOI: 10.2139/ssrn.3358866

R. Kirchheim

引用次数: 0

Data-Driven Approximation Schemes for Joint Pricing and Inventory Control Models 联合定价和库存控制模型的数据驱动近似方案

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-03-18 DOI: 10.2139/ssrn.3354358

Hanzhang Qin, D. Simchi-Levi, Li Wang

{"title":"Data-Driven Approximation Schemes for Joint Pricing and Inventory Control Models","authors":"Hanzhang Qin, D. Simchi-Levi, Li Wang","doi":"10.2139/ssrn.3354358","DOIUrl":"https://doi.org/10.2139/ssrn.3354358","url":null,"abstract":"We study the classic multiperiod joint pricing and inventory control problem in a data-driven setting. In this problem, a retailer makes periodic decisions on the prices and inventory levels of a product that she wishes to sell. The retailer’s objective is to maximize the expected profit over a finite horizon by matching the inventory level with a random demand, which depends on the price in each period. In reality, the demand functions or random noise distributions are usually difficult to know exactly, whereas past demand data are relatively easy to collect. We propose a data-driven approximation algorithm that uses precollected demand data to solve the joint pricing and inventory control problem. We assume that the retailer does not know the noise distributions or the true demand functions; instead, we assume either she has access to demand hypothesis sets and the true demand functions can be represented by nonnegative combinations of candidate functions in the demand hypothesis sets, or the true demand function is generalized linear. We prove the algorithm’s sample complexity bound: the number of data samples needed in each period to guarantee a near-optimal profit is [Formula: see text], where T is the number of periods, and ϵ is the absolute difference between the expected profit of the data-driven policy and the expected optimal profit. In a numerical study, we demonstrate the construction of demand hypothesis sets from data and show that the proposed data-driven algorithm solves the dynamic problem effectively and significantly improves the optimality gaps over the baseline algorithms. This paper was accepted by J. George Shanthikumar, big data analytics.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80767134","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: 10

A Core-Shell Gold Nanorod@Layered Double Hydroxide Nanomaterial with High Efficient Photothermal Conversion and Its Application in Antibacterial and Tumor Therapy 核壳金Nanorod@Layered高效光热转化双氢氧化物纳米材料及其在抗菌和肿瘤治疗中的应用

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-03-13 DOI: 10.2139/ssrn.3351832

Kun Ma, Yawen Li, Yuzhi Chen, Xin Zhang, Chunyuan Chen, Haoyu Yu, Jia Huang, Zhiying Yang, Xuefei Wang, Zhuo Wang

引用次数: 7

Physiological Biometric an Adequate Security Measure for IoT Applications 生理生物识别是物联网应用的适当安全措施

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-03-12 DOI: 10.2139/ssrn.3350997

Meenakshi Srivastava

引用次数: 0

Macroparticle Detection in Surface Coating Using Image Processing 基于图像处理的表面涂层宏粒子检测

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-03-11 DOI: 10.2139/ssrn.3350263

P. S. Pandey, A. Tiwari

{"title":"Macroparticle Detection in Surface Coating Using Image Processing","authors":"P. S. Pandey, A. Tiwari","doi":"10.2139/ssrn.3350263","DOIUrl":"https://doi.org/10.2139/ssrn.3350263","url":null,"abstract":"The thin films are coated on various surfaces to change or modify the characteristics of materials. The thin films are not very efficient because of macro particle formation. So there was a need to identify the reason behind macro particle formation, if there is a pattern in the formation of these macro particles and how these macro particles can be removed. Though there are various machines and software’s that do these particle detections but they are so expensive that those are only used by huge research labs. But the coating process is done in various organizations and for different applications even at smaller level. So there was a need to design a low cost thin film analysis model which can detect these macro particles and also identify if the coating quality is good or not. So the imaging of the thin films in this research was done using scanning electron microscopy. The images were analyzed and macro particles were detected using digital image processing algorithms like: gaussian filters to remove noise, image segmentation, watershed algorithm to separate & identify the particles and machine learning to make a film coating quality predicting model.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85458274","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: 0

Application of BIM: A Case of Flyover BIM的应用:以立交桥为例

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-02-23 DOI: 10.2139/ssrn.3371507

Rushikesh Kasar, P. Gaikwad

引用次数: 0

Risk Management in Road Construction Projects: High Volume Roads 道路建设项目的风险管理:高容量道路

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-01-20 DOI: 10.2139/ssrn.3375904

Anmol Okate, Vijay Kakade

{"title":"Risk Management in Road Construction Projects: High Volume Roads","authors":"Anmol Okate, Vijay Kakade","doi":"10.2139/ssrn.3375904","DOIUrl":"https://doi.org/10.2139/ssrn.3375904","url":null,"abstract":"Road construction projects carry a significant amount of risk due to its spread over a wide geographical area and threat from underground conditions. Risk can be defined as an event of known uncertainty and this uncertainty is measured in terms of its probability of occurrence. Risk has significant effect on any one of the aspects of a project namely cost, time or scope of the project. Understanding risks in the early stages of a project will help project managers to reduce its impacts and complete the project in an improved and more efficient manner. This can be achieved through proper Risk Management. The process of Risk Management comprises of identification, analysis and application of methods to reduce the identified risk. Along with identification and analysis, it is also necessary to allocate the risk properly to the respective contracting parties such as owners, consultants, contractors etc., so that risk handling decisions can be taken properly with authorization and without any disputes. This study focuses on management of risk in road construction projects. The roads are categorized as “High-volume roads” and “Low-volume roads” and analysis is carried out for High-volume roads roads. Identification of risk factors is done through a questionnaire survey and assessment of risk is done considering both the probability of the occurrence of risk and impact of the risk factor using 5 point likert scale for high volume and low volume roads. From the two parameters ‘risk priority’ is calculated by multiplying the RII values of both the parameters and the risks are ranked according to the RII values of the ‘risk priority’. Further allocation of the risk is also done through the questionnaire according to the responses of the respondents for each risk factor. The allocation is done towards the owner, consultant, contractor or the risk is shared between them. This study would help project managers to better estimate risks prior to the commencement of a project and allows them to develop proper mitigation measures at an early stage of a project.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"98 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80549053","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

Probing the Lattice-Distortion Effect on Yield Strengths in High Entropy Alloys 高熵合金中晶格畸变对屈服强度的影响

MatSciRN: Other Materials Processing & Manufacturing (Topic) Pub Date : 2019-01-10 DOI: 10.2139/ssrn.3313253

Li Li, Chao Jiang, Q. Fang, Jia Li, Bin Liu, Yong Liu, P. Liaw

{"title":"Probing the Lattice-Distortion Effect on Yield Strengths in High Entropy Alloys","authors":"Li Li, Chao Jiang, Q. Fang, Jia Li, Bin Liu, Yong Liu, P. Liaw","doi":"10.2139/ssrn.3313253","DOIUrl":"https://doi.org/10.2139/ssrn.3313253","url":null,"abstract":"High entropy alloys (HEAs) have attracted great attention due to their impressive properties induced by the severe lattice distortion in comparison to the conventional alloys. However, the effect of severe lattice distortion on the mechanical properties in face-centered-cubic (FCC) and body-centered-cubic (BCC) structured HEAs is still not fully understood, which are critically important to the fundamental studies as well as the industrial applications. Herein, a theoretical model for predicting the lattice-friction resistance and the yield stress in the FCC and BCC HEAs accounting for the lattice distortion is presented. Both the calculated lattice-friction resistance and the yield strength are compared to the experimental results, to verify the rationality of the built theoretical model. Moreover, the effect of the grain-size distribution on the yield strength is theoretically considered, which reveal the origin of multistage grain structure strengthening. The numerical predictions considering the severe lattice-distortion effect agree well with the experimental results for both FCC and BCC HEAs, in terms of the yield strength and the lattice-friction resistance. The grain-boundary strengthening dominates the yield strength in the FCC Al0.3CrCoFeNi HEA. The yield strength is governed by the lattice-friction resistance in the BCC TaNbHfZrTi HEA, agreeing with the previous work. In AlxCrCoFeNi HEAs, the Al concentration dominates the lattice-friction resistance, and the atomic-radius mismatch and shear-modulus mismatch induced by other four-principal-elements govern the lattice-friction lattice. The atomic-size mismatch dominates the lattice distortion in HEAs, and this viewpoint differs from the traditional knowledge that the increasing incorporated principal element controls the lattice distortion. These results provide the insight into the effect of the severe lattice distortion on the yield strengths in HEAs from the theoretical perspective, for discovering advanced high-strength HEAs.","PeriodicalId":18300,"journal":{"name":"MatSciRN: Other Materials Processing & Manufacturing (Topic)","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76269286","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: 1