Open Access Journal of Science and Technology最新文献_第4页

THE STRENGTH ASSESSMENT OF POLYMER FIBER-INDUCED CONCRETE 聚合物纤维诱导混凝土的强度评定

Open Access Journal of Science and Technology Pub Date : 2020-12-29 DOI: 10.31580/OJST.V3I4.1630

M. Wagh, P. Bhandari, A. Sengupta

{"title":"THE STRENGTH ASSESSMENT OF POLYMER FIBER-INDUCED CONCRETE","authors":"M. Wagh, P. Bhandari, A. Sengupta","doi":"10.31580/OJST.V3I4.1630","DOIUrl":"https://doi.org/10.31580/OJST.V3I4.1630","url":null,"abstract":" \u0000Concrete utilization has become one of the basic needs of humans in today’s industrialization and urbanization scenario. Ingredients of concrete include cement, sand and aggregates. Cement production is associated with CO2 emission and green house emission issues. Availability of sand and aggregate is also creating serious issue these days. Handling of concrete required technical expertise and day to day research advancements are made to solve issues related to concrete being weak in tensile strength. Weakness is concrete can be mitigated by adding fibers which help to improve tensile strength of concrete. Fibers are available in the form of waste polythene, discarded rubber tyres of automobiles, etc. Polymer fibers can provide better strength. It increases ductility and reduces deflection in large concrete members of structure. In current work, Polythene and rubber tyres were cut down to fine fibers and added in concrete as replacement to cement in different incremental percentages. M30 grade of concrete was prepared. M30 and above grade concrete are generally utilized in construction of industrial flooring. Different tests performed on polymer fiber induced concrete revealed that it can be suitably used as substitute to normal M30 concrete for temperature and impact resistant flooring construction.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84492138","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

TVET STUDENT TEACHERS’ SOFT SKILL PROFILE OF COMPUTER AIDED DESIGN (CAD) COURSES AT MALAYSIAN TEACHER EDUCATION INSTITUTE 马来西亚师范学院计算机辅助设计(cad)课程Tvet学生教师软技能概况

Open Access Journal of Science and Technology Pub Date : 2020-12-29 DOI: 10.31580/OJST.V3I4.1622

S. T. Palpanadan, Ros Eliana Ahmad Zuki, Azhari Mariani

{"title":"TVET STUDENT TEACHERS’ SOFT SKILL PROFILE OF COMPUTER AIDED DESIGN (CAD) COURSES AT MALAYSIAN TEACHER EDUCATION INSTITUTE","authors":"S. T. Palpanadan, Ros Eliana Ahmad Zuki, Azhari Mariani","doi":"10.31580/OJST.V3I4.1622","DOIUrl":"https://doi.org/10.31580/OJST.V3I4.1622","url":null,"abstract":"Soft skills are very much needed and have to be mastered in improving the self-performance of all graduates. The imbalance between academic curriculum and soft skills can also affect the quality of student teachers. A pilot study was also conducted to identify the level of mastery of soft skills (critical thinking and problem solving skills) of Technical and Vocational Education and Training (TVET) student teachers through learning Computer Aided Design (CAD) course using a self-developed profile. Thus, the aim of this study was to validate the developed profile. A quantitative method was employed where questionnaires were distributed for data collection. 37 TVET student teachers were involved in this study. Descriptive statistics using statistical packages for the social science version 25.0 (SPSS version 25.0) were adopted for data analyses. The value of cronbach alpha obtained for the instrument used was 0.974 which was considered high. In addition, the Kappa value obtained was 0.972, indicating a very good agreement from the 3 experts. The findings revealed that participants’ mean scores for critical thinking and problem solving skills were 3.439 and 3.437 respectively which revealed that the student teachers were having moderate levels of soft skills. Hence, this study is important and relevant in helping to validate the instrument developed that can be utilised by the lecturers to gain feedback on the mastery level of soft skills among TVET student teachers. Besides, the findings of this study can be implemented for TVET student teachers at other Teachers Training Institute or other institutions.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77908599","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

Evolution and Advancement of Arithmetic Coding over Four Decades 四十年来算术编码的演变与进步

Open Access Journal of Science and Technology Pub Date : 2020-10-31 DOI: 10.31580/ojst.v3i3.1664

Ujala Razaq, Xu Lizhong, Changli Li, Muhammad Usman

引用次数: 2

Design of Wraparound Microstrip Antenna using the Method of Moment 基于矩量法的绕行微带天线设计

Open Access Journal of Science and Technology Pub Date : 2020-10-31 DOI: 10.31580/OJST.V3I3.1669

Alnawars Mohammed, W. A. Al-Tumah, Ra’ed A. Malallah

引用次数: 2

Dynamic Resource Allocation in Cloud Computing Based on Software-Defined Networking Framework 基于软件定义网络框架的云计算动态资源分配

Open Access Journal of Science and Technology Pub Date : 2020-10-31 DOI: 10.31580/ojst.v3i3.1668

Arwa Mohamed, Mosab Hamdan, Ahmed Abdelazizb, Sharief F. Babiker

{"title":"Dynamic Resource Allocation in Cloud Computing Based on Software-Defined Networking Framework","authors":"Arwa Mohamed, Mosab Hamdan, Ahmed Abdelazizb, Sharief F. Babiker","doi":"10.31580/ojst.v3i3.1668","DOIUrl":"https://doi.org/10.31580/ojst.v3i3.1668","url":null,"abstract":"cloud computing has become more powerful with the inclusion of software-defined networking (SDN) in its environment. In Cloud Data Centers (CDCs), an important research issue is how to forecast and allocate resources efficiently whilst achieving Quality of Service (QoS) of users request with minimal overall power consumption; taking into account the frequent changes in resource requirements. In this paper, we propose a Supervisor Controller-based Software-Defined Cloud Data Center (SC-boSD-CDC) framework for dynamic resource allocation and prediction of cloud computing-based SDN. In this proposed module, Genetic Algorithm (GA) is proposed to deal with the multi-objective problem of dynamically forecasting the utilization of resources in both compute nodes and links bandwidth of network as well as energy consumption in the Cloud Data Center (CDC). Furthermore, a Virtual Machines (VMs) placement algorithm is also proposed to allocate computing resources and routing algorithms to choose the proper bandwidth links between switches; resulting in increased CPU and memory utilization and reduction in overall power consumption.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90796018","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

A Review of the Wearable Textile-Based Antenna using Different Textile Materials for Wireless Applications 基于纺织材料的可穿戴无线天线研究进展

Open Access Journal of Science and Technology Pub Date : 2020-10-31 DOI: 10.31580/OJST.V3I3.1665

Shehab Khan Noor, N. Ramli, Nurul Liyana Hanapi

{"title":"A Review of the Wearable Textile-Based Antenna using Different Textile Materials for Wireless Applications","authors":"Shehab Khan Noor, N. Ramli, Nurul Liyana Hanapi","doi":"10.31580/OJST.V3I3.1665","DOIUrl":"https://doi.org/10.31580/OJST.V3I3.1665","url":null,"abstract":"Miniaturization of wireless systems empowered the use of the textile antenna for various purposes and has become one of the fastest developing technology in the world today. In general, textile antennas are microstrip antenna where the substrate is a textile material. Commercially, a variety of textile materials available these days, and the properties of these textiles have an impact on the characteristics and performance of an antenna. Normally, textile materials present a very low dielectric constant which is required for an efficient antenna. Nevertheless, textile fabrics are porous, anisotropic, and compressible materials whose thickness and density alters with low pressure affecting the electromagnetic properties of the material. The features of the textile materials were believed to impact the behavior of the antenna, hence this study shows minimal research highlighted on the differences of textile material properties. This review paper summarizes different types of antenna with their applications, essential antenna parameters, and the textile material used for the construction of the wearable textile antenna. This literature review guides to reveal the various considerations for designing wearable antenna from different textile materials. Lastly, several open recommendations are given for further guidance for future studies.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84475552","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

The Effect of Translation on the Approximated First Order Polarization Tensor of Sphere and Cube 平移对球面和立方体近似一阶偏振张量的影响

Open Access Journal of Science and Technology Pub Date : 2020-10-31 DOI: 10.31580/ojst.v3i3.1672

Suzarina Ahmed Sukri, Taufiq Khairi Ahmad Khairuddin, Yeak Su Hoe

引用次数: 1

Design and Simulation of Triple Band Circular Patch Microstrip Antenna Based on Shape of Ring and Rectangular Slots 基于环形矩形槽型的三频带圆形贴片微带天线设计与仿真

Open Access Journal of Science and Technology Pub Date : 2020-10-31 DOI: 10.31580/ojst.v3i3.1666

Riyam A. Mutashar, Wa'il A. Godaymi Al-Tumah, Akeel S.Tahir

引用次数: 1

Technology in Forensic Science 法医学技术

Open Access Journal of Science and Technology Pub Date : 2020-08-28 DOI: 10.11131/2019/101258

B. Fakiha

引用次数: 4

Lecturers’ Assessment of Adequacy and Utilization of Educational Technology for Effective Teaching of Environmental Sciences Programmes in Kano State Polytechnic, Nigeria 尼日利亚卡诺州立理工学院讲师对环境科学课程有效教学中教育技术的充分性和利用的评估

Open Access Journal of Science and Technology Pub Date : 2020-08-05 DOI: 10.31580/ojst.v3i2.1466

Mahmoud Sani Dambatta

{"title":"Lecturers’ Assessment of Adequacy and Utilization of Educational Technology for Effective Teaching of Environmental Sciences Programmes in Kano State Polytechnic, Nigeria","authors":"Mahmoud Sani Dambatta","doi":"10.31580/ojst.v3i2.1466","DOIUrl":"https://doi.org/10.31580/ojst.v3i2.1466","url":null,"abstract":"This article reports on the main purpose of the study which assessed the adequacy and utilization of educational technology for effective teaching of environmental sciences programmes by the lecturers of Kano State Polytechnic, Nigeria. Two research questions guided the study. The population comprised 23 lecturers teaching environmental sciences courses in the Polytechnic. The research adopted a descriptive survey design. A structured questionnaire containing 20 items in 5 point likert rating scale was developed and validated by experts. Reliability co-efficient of 0.75 was established using Cronbach Alpha which shows the internal consistency of the instrument was high. Collection of data was done by the researcher. Questions were answered and analysed with Mean and Standard Deviation. Findings reveal that educational technology for teaching environmental sciences courses were not adequate. Furthermore, the said resources were not utilized. It was concluded that there was inadequate and non-utilization of educational technology, which the resulting effect could lead to graduating half-baked students. ","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85583125","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