TEM Journal最新文献_第2页

A Miniaturized Multi-Beam Wideband High Gain-5G Antenna Based on a Novel Design of Compact 4x4 Butler Matrix 基于紧凑型 4x4 Butler 矩阵新设计的小型化多波束宽带高增益 5G 天线

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-81

Mohammed Sadiq, Nasri Bin Sulaiman, Maryam BT Mohd Isa, M. Hamidon, Muntadher Talib

{"title":"A Miniaturized Multi-Beam Wideband High Gain-5G Antenna Based on a Novel Design of Compact 4x4 Butler Matrix","authors":"Mohammed Sadiq, Nasri Bin Sulaiman, Maryam BT Mohd Isa, M. Hamidon, Muntadher Talib","doi":"10.18421/tem131-81","DOIUrl":"https://doi.org/10.18421/tem131-81","url":null,"abstract":"This research focuses on developing a uniquely miniaturized 4×4 Butler Matrix Network integrated with a 1×4 linear array antenna, generating four beams with exceptional isolation and transmission coefficients. Extensive analyses evaluate the antenna's radiation characteristics, including gain, directivity, and beam-forming capabilities. Innovative design techniques achieve significant Butler matrix miniaturization without compromising performance, resulting in a compact final design measuring 23mm × 20.5mm. The integrated multi-beam antenna array demonstrates favorable outcomes, ensuring impedance matching at 50Ω, high gain, and four beams directed at angles of ±8º and ±33º. These results highlight the design's superiority over traditional counterparts, with gains of up to 11 dB. Detailed radiation patterns for all ports are presented. The paper also provides insights into the manufacturing process, materials used, and challenges faced. The results conclusively confirm the system's compliance with performance criteria, effectively operating within the 28 GHz frequency band. This research significantly contributes to downsizing antenna systems, facilitating more compact and efficient communication devices in the future.","PeriodicalId":515899,"journal":{"name":"TEM Journal","volume":"3 5‐6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140424802","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

Traffic Violation Detection System on Two-Wheel Vehicles Using Convolutional Neural Network Method 使用卷积神经网络方法的两轮车辆交通违规检测系统

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-55

Kusworo Adi, C. E. Widodo, A. P. Widodo, Fauzan Masykur

{"title":"Traffic Violation Detection System on Two-Wheel Vehicles Using Convolutional Neural Network Method","authors":"Kusworo Adi, C. E. Widodo, A. P. Widodo, Fauzan Masykur","doi":"10.18421/tem131-55","DOIUrl":"https://doi.org/10.18421/tem131-55","url":null,"abstract":"The number of vehicles is increasing every year, and along with it, the number of traffic violations is also rising.. Traffic violations are one of the causes of traffic accidents. Currently, traffic violation detection still uses conventional methods, involving the police to take action. Preliminary research on traffic violation detection by several researchers mostly uses the Yolo Method. The study aims to design a traffic violation detection system for two-wheeled vehicles using the Convolutional Neural Network (CNN). In this research, the CNN method was used with the Faster RCNN architecture. Faster R-CNN is composed of convolution layers, Relu, and pooling layers which are used to extract features from images. An image in the size of 3264 x 1836 pixels, with the type of marking violation and helmet use was used as a sample. The number of images used was 660 images with 600 images for training and 60 images for testing. The system will detect traffic violations on two-wheeled vehicles, namely helmet use violations and road marking violations. This traffic violation detection system for two-wheeled vehicles produces the highest accuracy, namely 85% with a maxpooling kernel size value of 1x1, stride 1 and a learning rate of 0.003. This research has the potential to be applied to areas that are less accessible to the police, because the system will record and analyze violations.","PeriodicalId":515899,"journal":{"name":"TEM Journal","volume":"18 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140424926","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

The Business Environment in Slovakia from the Point of View of the Death of Enterprises 从企业死亡的角度看斯洛伐克的商业环境

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-09

Mária Vojtková, Ľubica Hurbánková, Daniela Sivašová

{"title":"The Business Environment in Slovakia from the Point of View of the Death of Enterprises","authors":"Mária Vojtková, Ľubica Hurbánková, Daniela Sivašová","doi":"10.18421/tem131-09","DOIUrl":"https://doi.org/10.18421/tem131-09","url":null,"abstract":"Creating favorable conditions in the business sphere is one of the main priorities of the European Union, while each member country implements the objectives of the EU strategy in its national strategic documents. The goal of this paper is modeling respectively quantifying the effect of the death of business entities in Slovakia in 2019 and 2020 from selected factors using logistic regression. We decided to find out which of the selected factors (legal form of the enterprise; size group according to the average registered number of employees; region; economic activity performed by the enterprise) most influenced the death of enterprises in the period before and during the pandemic, which will allow us to determine the most and the least threatened categories of enterprises. The analysis was based on the business demography database, while the processing itself was carried out using the statistical tool SAS Enterprise Guide 7.1. The results of the analysis during the COVID-19 pandemic showed a significant impact of the factor legal form of the enterprise - mainly in the group of enterprises owned by natural persons, then a statistically significant impact of the factor size group of enterprise with an average registered number of employees 0-1 and finally a significant impact of the factor economic activity of the enterprise, mainly in the field of services. The smallest but statistically significant effect was manifested in the region factor, while the region in the east of Slovakia can be considered the most threatened from the point of view of the demise of enterprises. An interesting fact is that the influence of individual categories of factors on the closure of a enterprises in the case of micro-enterprises with one employee is very similar to the situation throughout Slovakia.","PeriodicalId":515899,"journal":{"name":"TEM Journal","volume":"37 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140426109","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

Enhancing Future Teachers' Professional Competencies Through Children's Rights Education 通过儿童权利教育提高未来教师的专业能力

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-25

Galina Atanasova, Bagryana Ilieva

引用次数: 0

Sensitivity Options of 5G Non-Standalone Deployment Strategies: A Simulation Model for Emerging Countries 5G 非andalone 部署策略的敏感性选项：新兴国家模拟模型

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-04

M. I. Nashiruddin, Putri Rahmawati, M. Nugraha, A. T. Hanuranto, Muhammad Suryanegara, Yunendah Nur Fuadah

{"title":"Sensitivity Options of 5G Non-Standalone Deployment Strategies: A Simulation Model for Emerging Countries","authors":"M. I. Nashiruddin, Putri Rahmawati, M. Nugraha, A. T. Hanuranto, Muhammad Suryanegara, Yunendah Nur Fuadah","doi":"10.18421/tem131-04","DOIUrl":"https://doi.org/10.18421/tem131-04","url":null,"abstract":"Deploying cutting-edge 5G technology is a major challenge for mobile operators in emerging countries, facing hurdles on both the technical and economic fronts. This study provides specific ways in which mobile companies in developing countries can use 5G technology to benefit economically. This study utilizes a sensitivity option with a techno-economic analysis (TEA) simulation model to evaluate business options influencing successful 5G non-standalone (NSA) deployment in these markets, using Indonesia’s Bandung City as a case study. The analysis finds that Bandung requires 172 5G gNodeBs to meet traffic demand. Further, the 5G NSA deployment delivers strong key performance indicators (KPIs), with good signal synchronization received power (SS-RSRP) and signal-to-interference noise ratio (SS-SINR). Sensitivity analysis identifies the gNodeB amount as the most critical parameter impacting overall 5G NSA deployment feasibility. Overall, the analysis indicates mobile operators can recover investments after 3 years and 10 months, providing evidence for the viability of 5G NSA deployment in Bandung’s urban area.","PeriodicalId":515899,"journal":{"name":"TEM Journal","volume":"288 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140427835","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

The Impact of Organizational Justice on the Degree of Work Engagement of Primary and Secondary School Teachers: Mediated by Teachers’ Professional Achievement 组织公正对中小学教师工作投入程度的影响：以教师的专业成就为中介

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-47

Shiyou Huang, Yuxin Gao, Yuying Yang, Lulu Wang, Jining Han

{"title":"The Impact of Organizational Justice on the Degree of Work Engagement of Primary and Secondary School Teachers: Mediated by Teachers’ Professional Achievement","authors":"Shiyou Huang, Yuxin Gao, Yuying Yang, Lulu Wang, Jining Han","doi":"10.18421/tem131-47","DOIUrl":"https://doi.org/10.18421/tem131-47","url":null,"abstract":"Organizational justice pertains to the perception of fairness experienced by individuals within an organization, encompassing four dimensions: procedural justice, distributive justice, leadership justice, and informational justice. To obtain the data a questionnaire survey on 432 primary and secondary school teachers was conducted to understand their sense of organizational justice, professional achievement, and work engagement. The research results found that (1) there is a significant positive correlation between organizational justice and teacher work engagement, with organizational justice also serving as a substantial predictor of this engagement level; (2) the sense of professional achievement is significantly positively correlated with the level of teacher work engagement, and it significantly predicts the level of teacher work engagement; and (3) organizational justice indirectly affects teachers' level of work engagement through the mediating effect of professional achievement. Research suggests two strategies to enhance primary and secondary school teachers' sense of organizational justice and professional achievement, thereby improving their work engagement levels.","PeriodicalId":515899,"journal":{"name":"TEM Journal","volume":"61 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140427908","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

Innovative Learning Strategies:Project-Based Learning Model for Excelling in Visual Programming 创新学习策略：基于项目的学习模式，提高视觉编程能力

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-61

Rizkayeni Marta, Afif Rahman Riyanda, Agariadne Dwinggo Samala, Ika Parma Dewi, Novi Hendri Adi

{"title":"Innovative Learning Strategies:Project-Based Learning Model for Excelling in Visual Programming","authors":"Rizkayeni Marta, Afif Rahman Riyanda, Agariadne Dwinggo Samala, Ika Parma Dewi, Novi Hendri Adi","doi":"10.18421/tem131-61","DOIUrl":"https://doi.org/10.18421/tem131-61","url":null,"abstract":"Modern education demands innovative approaches to engage students effectively and enhance learning outcomes. This article explores the implementation of an innovative pedagogical approach, namely Project-Based Learning (PjBL), in the context of the Visual Programming course. The study aims to investigate the impact of this approach on students’ participation and learning achievements. Using a Classroom Action Research (CAR) design, the research was conducted in two cycles. The participants were 30 students enrolled in the Educational Technology Informatics program at Universitas Negeri Padang. The study used a descriptive comparative method to assess the outcomes, comparing pre-cycle to Cycle II results. The findings reveal remarkable improvements in student’s cognitive growth (53.33%), affective development (46.66%), and psychomotor skills (56.66%) following the application of the PjBL approach. Furthermore, there was a noticeable increase of 43.44% in the active participation of students during the learning process after incorporating the PjBL approach. In conclusion, this study underscores the effectiveness of PjBL in fostering active participation and elevating learning achievements in the Visual Programming course. The article contributes to the discourse on innovative pedagogical strategies. It highlights the potential of PjBL to revolutionize traditional educational methods, equipping students with skills engagingly and effectively.","PeriodicalId":515899,"journal":{"name":"TEM Journal","volume":"76 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140423971","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

Soil Quality Index in Cocoa Crops 可可作物的土壤质量指数

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-30

Alberto Ducuara Manrique, Alfonso Manrique Medina, Luz Elena Vargas Ortiz

{"title":"Soil Quality Index in Cocoa Crops","authors":"Alberto Ducuara Manrique, Alfonso Manrique Medina, Luz Elena Vargas Ortiz","doi":"10.18421/tem131-30","DOIUrl":"https://doi.org/10.18421/tem131-30","url":null,"abstract":"The main objective of this research is to develop a methodology to calculate a soil quality index in cocoa crops (Theobroma cacao L.), based on chemical properties such as pH, cation exchange capacity, organic matter, and percentage of base saturation, essential for the availability of nutrients in each cocoa tree. The problematic situation that causes this research is related to low yields per hectare, in small and medium-sized cocoa farms in the department of Huila – Colombia. A chemical quality index is proposed, which facilitates the analysis of the health behavior of the cultivated soil and nutrition of the cocoa plants, as a result of its interrelation with the physical and biological aspects. The proposed methodology is based on principal components analysis, to obtain weights and variable standardization equations, which evaluate 248 soil samples. The data indicate that in the cocoa producing land lots there are high pH values, cation exchange capacity and base saturation, but low levels of organic matter. It is concluded that in general the soils used showed moderate or low quality (52.42% and 11.29%, respectively), the rest showed high quality (36.29%). A soil intervention can improve its quality, however, the characteristic of the crop and the low levels of organic matter, requires recovering the properties and improving the health of the soil, if possible, through the implementation of regenerative agriculture, the object of future studies and research.","PeriodicalId":515899,"journal":{"name":"TEM Journal","volume":"16 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140425219","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

Adjustment Estimation and Validation of the Addiction to Social Networks Scale Using the SEM Methodology 使用 SEM 方法对社交网络成瘾量表进行调整估计和验证

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-26

M. Escalera-Chavez, Liduvina Valencia-Márquez, Arturo García-Santillán

{"title":"Adjustment Estimation and Validation of the Addiction to Social Networks Scale Using the SEM Methodology","authors":"M. Escalera-Chavez, Liduvina Valencia-Márquez, Arturo García-Santillán","doi":"10.18421/tem131-26","DOIUrl":"https://doi.org/10.18421/tem131-26","url":null,"abstract":"Currently, social networks serve as communication tools, but the problem of excessive usage leading to addiction is on the rise. Therefore, the purpose of this study is to validate the Social Network addiction (SNA) scale in university students. The study is developed from a quantitative approach, of an exploratory and confirmatory type. The type of sampling is non-probabilistic by self-determination, and the participation of 200 students was achieved, to whom the reason for the survey was explained, who agreed to participate voluntarily. For data analysis, the instrument was validated according to Cronbach's alpha criteria and after, for the analysis, the SEM methodology was used. The most important findings show only the conformation of a two-factor model, which includes the seven most representative items, and which are feasible to analyze in this study group. The goodness-of-fit index (GFI) value is acceptable since it exceeds the theoretical threshold greater than 0.9 and the root mean square error of approximation (RMSEA) is less than 0.05. The Tucker-Lewis index (TLI) and the norm adjustment index (NFI) are greater than 0.9. Based on the results, it can be concluded that students exhibit a strong desire for connectivity. Furthermore, they invest a significant amount of time in their online networks and experience uncertainty about how to occupy their when they are not connected.","PeriodicalId":515899,"journal":{"name":"TEM Journal","volume":"15 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140425230","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

Pedicle Screw Bond Strength and Resistance Characteristics With Various Mineral Quality 不同矿物质量的椎弓根螺钉粘接强度和阻力特性

TEM Journal Pub Date : 2024-02-27 DOI: 10.18421/tem131-83

Weriono Weriono, M. Rusli, R. Sahputra, Hendery Dahlan

{"title":"Pedicle Screw Bond Strength and Resistance Characteristics With Various Mineral Quality","authors":"Weriono Weriono, M. Rusli, R. Sahputra, Hendery Dahlan","doi":"10.18421/tem131-83","DOIUrl":"https://doi.org/10.18421/tem131-83","url":null,"abstract":"Abnormal quality and composition of bone mineral bonds in the spine are found in many patients with cases of idiopathic scoliosis. The data shows that poor bone quality promotes thoracic spine degenerative disc swelling and physiological anomalies. Implants in the form of pedicle screws, rods, and connectors are one of the measures for scoliosis correction. When the pedicle screws are taken out after some use poor bone quality remains. In this study, fixation strength analysis will be carried out through tensile testing of bone joints and pedicle screws with variations in bone quality. Two specimen materials were used for approach analysis: polylactic acid (PLA) and bovine backbone. Pedicle screws are classified into three types: cylindrical, conical with a single thread, and double cylindrical screws. Tensile testing revealed that PLA specimens with pedicle screw variants provided the maximum force of 7.4 N and 8.31 N with double screw cylindrical implants at PLA 70:30 and PLA 40:60. A comparison of PLA specimens with a series of cylindrical screws to double-screw cylindrical screws yielded a displacement increase of 79.6%, whereas conical screws yielded a displacement increase of 222.3%. Fixation with double-screw cylindrical screws greatly increases tensile strength. However, the conical pedicle screw model with connecting rods gives greater fixation strength.","PeriodicalId":515899,"journal":{"name":"TEM Journal","volume":"19 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140425830","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