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Journal of Engineering Sciences and Innovation最新文献

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State-space approach for symbolic analysis of an analog passive filter and its conversion to digital filter 模拟无源滤波器的符号分析及其转换为数字滤波器的状态空间方法
Journal of Engineering Sciences and Innovation Pub Date : 2022-03-05 DOI: 10.56958/jesi.2022.7.1.87
Alexandru Lodin, L. Grama, C. Rusu
{"title":"State-space approach for symbolic analysis of an analog passive filter and its conversion to digital filter","authors":"Alexandru Lodin, L. Grama, C. Rusu","doi":"10.56958/jesi.2022.7.1.87","DOIUrl":"https://doi.org/10.56958/jesi.2022.7.1.87","url":null,"abstract":"The conversion of an analog filter described by a wiring diagram into another digital filter, having the same frequency characteristics was recently solved by a Python implementation. In this paper we will use this application for symbolic analysis of a passive filter having multiple components. Its conversion to digital filter is also described. Through experimental results we prove that the magnitude and phase characteristics are similar for the active analog filter and for the corresponding digital filter.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49011990","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
A new integer algorithm for an efficient VLSI implementation of DST using obfuscation technique 利用模糊技术实现DST的一种新的整数算法
Journal of Engineering Sciences and Innovation Pub Date : 2022-03-05 DOI: 10.56958/jesi.2022.7.1.97
D. Chiper
{"title":"A new integer algorithm for an efficient VLSI implementation of DST using obfuscation technique","authors":"D. Chiper","doi":"10.56958/jesi.2022.7.1.97","DOIUrl":"https://doi.org/10.56958/jesi.2022.7.1.97","url":null,"abstract":"In this paper we propose a new VLSI algorithm for an integer based discrete sine transform (IntDST) that allows an efficient VLSI implementation using systolic arrays. The proposed algorithm have all the benefits of an integer transform as a good approximation of irrational transform coefficients and allows an efficient restructuring into a regular and modular computation structure that allows an efficient VLSI implementation using systolic arrays. An efficient VLSI architecture for discrete sine transform can be obtained that allows an efficient incorporation of the obfuscation technique that significantly improves the hardware security and offering high speed performances due to a concurrent computation and using pipelining technique at a low hardware complexity.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48716313","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
Applying knowledge in the field of structural materials degradation from large pressurized reactors to small modular reactors 应用结构材料降解领域的知识，从大型压水堆到小型模块化反应器
Journal of Engineering Sciences and Innovation Pub Date : 2022-03-05 DOI: 10.56958/jesi.2022.7.1.15
D. Lucan, Ș. Valeca, G. Jinescu
{"title":"Applying knowledge in the field of structural materials degradation from large pressurized reactors to small modular reactors","authors":"D. Lucan, Ș. Valeca, G. Jinescu","doi":"10.56958/jesi.2022.7.1.15","DOIUrl":"https://doi.org/10.56958/jesi.2022.7.1.15","url":null,"abstract":"Innovative design incorporates radical conceptual changes in design approaches or system configuration in comparison with existing practice and would, therefore, require substantial R&D, feasibility tests and a prototype or demonstration plant to be implemented. According to the classification currently used by the IAEA, small reactors are the reactors with an equivalent electric power less than 300 MW. The NuScale Power Module (NPM) is a small, light-water-cooled pressurized-water reactor (PWR). To approach the R&D activity in the field of SMR, one can use the knowledge and expertise held by researchers regarding large reactors CANDU PHWR. The paper synthetically presents a CANDU Nuclear Power Plant and a NuScale reactor and a short presentation of steam generators used for the two types of reactors. Also, the paper includes a description of the processes and structural materials for the CANDU steam generator and the identification of known processes or those for which intense research activity must be developed to fill the knowledge gaps for the NuScale steam generators. Finding the answers for these issues supposes inter and transdisciplinarity in engineering sciences and technologies. Only by working in research teams including chemists, physicists, engineers specializing in materials science, metallurgy, energy, electronics can be identified and put into practice the optimal solutions for the proper functioning of innovative reactors.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45680884","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
Superposition and/or cumulation of loads in the case of linear behavior of matter, solved by a monodisciplinary or interdisciplinary approach 在物质线性行为的情况下，荷载的叠加和/或累积，通过单学科或跨学科方法解决
Journal of Engineering Sciences and Innovation Pub Date : 2022-03-05 DOI: 10.56958/jesi.2022.7.1.105
IONELA-MIHAELA Roşu, C. Jinescu, Ion Durbacă
{"title":"Superposition and/or cumulation of loads in the case of linear behavior of matter, solved by a monodisciplinary or interdisciplinary approach","authors":"IONELA-MIHAELA Roşu, C. Jinescu, Ion Durbacă","doi":"10.56958/jesi.2022.7.1.105","DOIUrl":"https://doi.org/10.56958/jesi.2022.7.1.105","url":null,"abstract":"In the various chapters of science and especially in engineering sciences, there are many cases of superposition and/or cumulation of loads or their effects. The way one can solve such problems depends on the behavior of the material under load. The paper deals with the linear behavior of matter in which case the principle in physics, mechanics, mechanical engineering, electrical engineering, perfect gas statics, fluid flow etc. Case involving a monodisciplinary approach are separated from those involving an interdisciplinary approach to practical solutions. The interdisciplinary approach is also used to analyze the inverse problem where a certain load produces two or more effects, including the thermal one. One has found that, in the case of linear behavior, no synergistic effects can be detected. On that account, one can claim that, in the case of nonlinear behavior, solving the problems of superposition and/or cumulation of loads or their effects can now be done only by applying the principle of critical energy that allows – among other things – the introduction of the influence of matter damage, of the thermal effect, of the rate of load variation etc.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42162112","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
Transdisciplinarity approaches to mobility 流动性的跨学科方法
Journal of Engineering Sciences and Innovation Pub Date : 2022-03-05 DOI: 10.56958/jesi.2022.7.1.121
I. Cuncev
{"title":"Transdisciplinarity approaches to mobility","authors":"I. Cuncev","doi":"10.56958/jesi.2022.7.1.121","DOIUrl":"https://doi.org/10.56958/jesi.2022.7.1.121","url":null,"abstract":"The intense sustainable development of the knowledge society through the complexity of human activities, technologies, as well as theoretical concepts branched in all directions, have sophisticated user needs for products and services, for mobility. Following the performance of production and logistic units, the mobility of goods and passengers, the speeds of change and reaction to consumer demands, the quality of life is increasing. In the competition between production, logistics and circulation of information, which is becoming a quantum reality, it is necessary to quickly know the indicators by which to measure, analyze and make predictions of the activities that take place. Their quality means the avoidance of distorted images in different reality levels. It creates transdisciplinary work tools, and organizational and managerial structures for different reality levels. These systems integrate people's minds and psyches with physical reality, resulting the quantum psychology through which the human factor controls mobility.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41370670","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
Numerical solution of stable generalized complex Lyapunov equations 稳定广义复Lyapunov方程的数值解
Journal of Engineering Sciences and Innovation Pub Date : 2022-03-05 DOI: 10.56958/jesi.2022.7.1.71
V. Sima
{"title":"Numerical solution of stable generalized complex Lyapunov equations","authors":"V. Sima","doi":"10.56958/jesi.2022.7.1.71","DOIUrl":"https://doi.org/10.56958/jesi.2022.7.1.71","url":null,"abstract":"Generalized Lyapunov equations are often encountered in systems theory, analysis and design of control systems, and in many applications, including balanced realization algorithms, procedures for reduced order models, or Newton methods for generalized algebraic Riccati equations. An important application is the computation of the Hankel singular values of a generalized dynamical system, whose behavior is defined by a regular matrix pencil (E, A), with E nonsingular. This application uses the controllability and observability Gramians of the system, given as the solutions of a pair of related generalized Lyapunov equations. For a stable system, the solutions of both equations are non-negative definite. The paper summarizes the numerical algorithms for complex continuous- and discrete-time generalized systems. Such solvers are not yet available in the SLICOT Library or MATLAB toolboxes, but could be an important addition. The developed solvers address the essential practical issues of reliability, accuracy, and efficiency.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45605156","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
Systems theory and the study of cosmetic products 系统论与化妆品研究
Journal of Engineering Sciences and Innovation Pub Date : 2022-03-05 DOI: 10.56958/jesi.2022.7.1.45
Adela Elena Manea, Maria Delia Perju, A. Tamás
{"title":"Systems theory and the study of cosmetic products","authors":"Adela Elena Manea, Maria Delia Perju, A. Tamás","doi":"10.56958/jesi.2022.7.1.45","DOIUrl":"https://doi.org/10.56958/jesi.2022.7.1.45","url":null,"abstract":"The principles of systems theory apply today to all existentialist fields of man, whether it is economics, agriculture, industry, philosophy, medicine, research or even politics. As such, mathematical modeling as a tool for using systems theory is used as a technique for studying phenomena and processes specific to those fields. In the case of applying systems theory in researching problems related to cosmetic emulsions, mathematical modeling is a technique for quantitative and qualitative study of phenomena and physical-chemical processes that characterize cosmetics from obtaining them to using them as a finished product by man. Mathematical modeling is the basis for studying all processes and phenomena in terms of the principles of systems theory. In this context, we aimed to study the possibilities of using mathematical modeling in the characterization of cosmetic products, having the conviction that the results obtained will improve the performance possibilities of the quality of these products.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49374428","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: 2
Mobility - polysemy with interdisciplinary valences 移动性-具有交叉价的一词多义
Journal of Engineering Sciences and Innovation Pub Date : 2021-11-17 DOI: 10.56958/jesi.2021.6.4.8
Ș. Raicu, D. Costescu
{"title":"Mobility - polysemy with interdisciplinary valences","authors":"Ș. Raicu, D. Costescu","doi":"10.56958/jesi.2021.6.4.8","DOIUrl":"https://doi.org/10.56958/jesi.2021.6.4.8","url":null,"abstract":"\"The paper aims to demonstrate the inseparable interconnections between “social mobility”, “intellectual mobility” and “spatial mobility” (residential and traffic/trips). The broad themes of mobility reveal the unity that emerges from the ontological, sociological, and epistemic connections among various disciplines belonging to the human, natural and applied sciences. This unity of the disciplines involved in the study of mobility leads to interdisciplinarity. Three types of interdisciplinarity are identified and exemplified. The functions of interdisciplinarity result from the multiple structures involved in mobility research. To meet these functions, the contributions of the disciplines from several fields are decisive. But, disciplinary analysis, as a straightforward technique, monotonous and strictly specialized research tends to isolate experts in groups. Therefore, a further interdisciplinary approach is required to reach the finality of theoretical and applied research. Consequently, the path that research has been taken and will repeatedly continue starts from disciplinary research towards interdisciplinary research, and returns to disciplines, for improvement. \"","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41530527","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 on disciplines integration challenges for conducting research projects in biotechnologies 生物技术研究项目的学科整合挑战分析
Journal of Engineering Sciences and Innovation Pub Date : 2021-11-17 DOI: 10.56958/jesi.2021.6.4.11
C. Mateescu
{"title":"Analysis on disciplines integration challenges for conducting research projects in biotechnologies","authors":"C. Mateescu","doi":"10.56958/jesi.2021.6.4.11","DOIUrl":"https://doi.org/10.56958/jesi.2021.6.4.11","url":null,"abstract":"Developing and implementing research projects in biotechnologies is possible only by integrating scientific knowledge provided by specialists from various fundamental scientific fields, amongst which chemistry and chemical engineering, biology, agronomy, environmental engineering, energy, economics and social sciences. Inter- and transdisciplinary approach of research projects involves interactions between technical and non-technical disciplines, but also between the members of the research group; often, integrating disciplines is a very challenging task, which requires the collective effort of the project manager and team members. Finding a common language for effective communication within the group and between project partners, adaptability to exploring new knowledge, bridging interactions between research subgroups are just some of the required skills of project team members. This paper aims to identify and analyse the key elements that can guarantee a successful project in a biotechnological field, using both the theoretical approach and the author's own expertise in conducting and coordinating research and development projects.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48262411","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
Study on the magnetic field influence around of the overhead power lines regarding the general public exposure level 基于公众暴露水平的架空电力线路周围磁场影响研究
Journal of Engineering Sciences and Innovation Pub Date : 2021-11-17 DOI: 10.56958/jesi.2021.6.4.5
E. Darie, L. Pîslaru-Dănescu
{"title":"Study on the magnetic field influence around of the overhead power lines regarding the general public exposure level","authors":"E. Darie, L. Pîslaru-Dănescu","doi":"10.56958/jesi.2021.6.4.5","DOIUrl":"https://doi.org/10.56958/jesi.2021.6.4.5","url":null,"abstract":"This paper analyzes the distribution of the dimensions of the magnetic field in the vicinity of the high voltage overhead power lines (400 kV), in the context in which the effects of the electromagnetic field on living organisms and especially on humans are currently being analyzed. Electromagnetic fields of different frequencies interact with the human body in different ways, just as the effects of low frequency fields are not the same as those of the high frequency fields. Analysis of the electromagnetic field values near a high voltage overhead power line is very important for determining the degree of exposure to the electromagnetic field. The measurements are performed with the magnetic field tester, Hioki FT 3470-50 and the values obtained are compared with those indicated by current standards.","PeriodicalId":52936,"journal":{"name":"Journal of Engineering Sciences and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46572948","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
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