Journal of Engineering Sciences and Innovation最新文献_第2页

Best operation strategies for piezoelectric vibration energy harvesters. I. Theory 压电振动能量收集器的最佳运行策略。I. 理论

Journal of Engineering Sciences and Innovation Pub Date : 2023-06-26 DOI: 10.56958/jesi.2023.8.2.171

V. Badescu

引用次数: 0

The most important source of inspiration for artificial gripping systems are natural gripping systems 人工抓取系统最重要的灵感来源是自然抓取系统

Journal of Engineering Sciences and Innovation Pub Date : 2023-06-26 DOI: 10.56958/jesi.2023.8.2.139

I. Starețu

{"title":"The most important source of inspiration for artificial gripping systems are natural gripping systems","authors":"I. Starețu","doi":"10.56958/jesi.2023.8.2.139","DOIUrl":"https://doi.org/10.56958/jesi.2023.8.2.139","url":null,"abstract":"The main role of a gripping biosystem is to grasp-grip a body-object, which can then be transferred from one place to another. Gripping biosystems can be very simple, like two areas of soft biological tissue that can grasp a body nearby, such as the extremities of the elephant's trunk, but also very complex as the human hand, considered the best gripping biosystem. Some gripping biosystems are adaptated to increase the safety of the grip such as the octopus arm which is provided with suction cups to compensate for the reduced friction in the aquatic environment. The paper first classifies biogrippers according to the grasp-grip method through which we distinguish gripping: by grasp, shellfish-like claws, beak, claws, jaws and fingers. Suggestive examples are given for each case, and in some cases even artificial variants that were more or less inspired by natural biogrippers considered as models. The few details of the mathematical modeling of the human hand grip can be extrapolated to all existing biogrippers that can be identified. The paper tries for the first time an exhaustive presentation of biogrippers in order to stimulate their in-depth study and to use as many of the natural gripping solutions and some of their features to optimize the artificial grippers used especially in robots.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139368408","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

Analysis of truck braking using multiple simulations 利用多重模拟分析卡车制动

Journal of Engineering Sciences and Innovation Pub Date : 2023-06-26 DOI: 10.56958/jesi.2023.8.2.207

M. Popa, Nicolae Burnete, D. Capătă, B. Jurchiş

引用次数: 0

The efficiency of the horizontal directional drilling method in the rehabilitation and modernization projects of the underground infrastructure 水平定向钻探法在地下基础设施修复和现代化项目中的效率

Journal of Engineering Sciences and Innovation Pub Date : 2023-06-26 DOI: 10.56958/jesi.2023.8.2.219

VALENTIN-PAUL Tudorache, N. Antonescu

{"title":"The efficiency of the horizontal directional drilling method in the rehabilitation and modernization projects of the underground infrastructure","authors":"VALENTIN-PAUL Tudorache, N. Antonescu","doi":"10.56958/jesi.2023.8.2.219","DOIUrl":"https://doi.org/10.56958/jesi.2023.8.2.219","url":null,"abstract":"\"The evolution of human society was and is dependent on natural resources (oil, natural gas, coal, ores, industrial water, drinking water, etc.) and, obviously, on their transportation through pipelines. The existence of resources in the earth's crust, at depths not always accessible, required the finding of methods for their exploration and exploitation. Consequently, in the last 30 years, drilling methods, techniques and technologies have been developed. Today, the Horizontal Directional Drilling method covers the entire geological spectrum, and in terms of rehabilitation and modernization projects of the underground infrastructure, it ensures high quality. Therefore, Horizontal Directional Drilling is the smart, clean and efficient solution for installing the network sections to be installed. The authors, under the auspices of the Romanian Academy of Technical Sciences (ASTR) and the General Association of Romanian Engineers (AGIR), in this paper, highlight the use and advantages of Horizontal Directional Drilling. The main objective is to install such services in Romania without using traditional trenching methods, helping to avoid any unnecessary impact on the environment and, evidently, offering extra security. \"","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139368547","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

Experimental evaluation of the treadmill speed and incline effects on the ankle kinematics in healthy subjects 跑步机速度和坡度对健康受试者踝关节运动学影响的实验评估

Journal of Engineering Sciences and Innovation Pub Date : 2023-06-26 DOI: 10.56958/jesi.2023.8.2.125

Daniela Tarniță, A. Petcu, Gabriela Marinache, Dan Marghitu

引用次数: 0

Functional principles of the envelope characterized by the variable thermal resistance of the wall as a result of parietodynamic exhaust effect (PDE) 围护结构的功能原理，其特点是由于顶动力排气效应（PDE）导致墙体热阻可变

Journal of Engineering Sciences and Innovation Pub Date : 2023-06-26 DOI: 10.56958/jesi.2023.8.2.187

Dan Constantinescu, H. Petran, Cristian Petcu

{"title":"Functional principles of the envelope characterized by the variable thermal resistance of the wall as a result of parietodynamic exhaust effect (PDE)","authors":"Dan Constantinescu, H. Petran, Cristian Petcu","doi":"10.56958/jesi.2023.8.2.187","DOIUrl":"https://doi.org/10.56958/jesi.2023.8.2.187","url":null,"abstract":"The paper presents the opaque envelope system in the endowment of inhabited buildings characterized by the use of the heat of the air discharged from the inhabited spaces, circulated through the space adjacent to the living environment / outdoor environment in order to reduce the need for heat / sensitive cold of the inhabited spaces (PDE). It is presented mathematical modeling of the processes of heat transfer and flow of indoor / outdoor air circulated through parallel vertical channels. The dimensions of vertical channel opening and air flows are based on the solutions of the property transfer equations associated with Model 1 (forced laminar flow) and Model 2 (globally representative model of both laminar flow and turbulent flow). Model 2 includes both laminar flow (space heating in cold season and cooling spaces in summer season hours with sun) and turbulent flow (cooling living spaces in summer season, hours of night – free cooling). A case study and the interpretation of the results obtained regarding the energy performance of the living space in relation to similar results associated with the conventional envelope is presented.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139368509","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

Modal screening of vibrating systems with local modes 具有局部模态的振动系统的模态筛选

Journal of Engineering Sciences and Innovation Pub Date : 2023-06-26 DOI: 10.56958/jesi.2023.8.2.113

Mircea Radeș

引用次数: 0

Coating of a lignin-based polymer with ceramic micropowders 用陶瓷微粉涂覆木质素基聚合物

Journal of Engineering Sciences and Innovation Pub Date : 2023-06-26 DOI: 10.56958/jesi.2023.8.2.101

Alina Marguta, S. Mazurchevici, D. Nedelcu

引用次数: 0

Fearless design on the gas leak (fire suppression and smart alert system) 天然气泄漏的无畏设计（灭火和智能警报系统）

Journal of Engineering Sciences and Innovation Pub Date : 2022-12-20 DOI: 10.56958/jesi.2022.7.4.485

H. Hasbullah, L. Rachman

引用次数: 0

Thermal rehabilitation of residential buildings or efficiency vs effectiveness in envelope of existing buildings 住宅建筑物的热修复或现有建筑物围护结构的效率与效益

Journal of Engineering Sciences and Innovation Pub Date : 2022-12-20 DOI: 10.56958/jesi.2022.7.4.447

A. Dabija

{"title":"Thermal rehabilitation of residential buildings or efficiency vs effectiveness in envelope of existing buildings","authors":"A. Dabija","doi":"10.56958/jesi.2022.7.4.447","DOIUrl":"https://doi.org/10.56958/jesi.2022.7.4.447","url":null,"abstract":"\"Starting from the definition of the terms, efficiency generally refers to the management of resources in order to achieve a goal, while effectiveness represents the ability / effective quantification of the achievement of a goal. In other words, efficiency is a process while effectiveness is an outcome. Having said that, the question rises (rhetorical, after all): was the process of thermal rehabilitation of the residential building stock efficient? Was it effective? Efficient it probably was: with the resources at the disposal of the town halls, with funds attracted and with the contribution of owners' associations (when the situation demanded their participation), a huge number of residential buildings were covered in thermal-insulating blankets. Was the expected result achieved? In other words, was it effective? The question may have many answers, considering the angles, the nuances and perspectives from where the intervention is evaluated, from the very basis of the approach – the hypothesis and the concept - to the architecture of the buildings and their relationship with the urban space of which they are a part. The paper proposes a critical analysis of the results of the approach to the thermal “wrapping” of residential buildings in Romania as well as in the European research and practice.\"","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44994129","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