Makara Journal of Technology最新文献_第6页

Mean-shift Object Tracking Algorithm with Systematic Sampling Technique 基于系统采样技术的均值偏移目标跟踪算法

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Makara Journal of Technology Pub Date : 2021-04-30 DOI: 10.7454/MST.V25I1.3789

Y. Bandung, Aris Ardiansyah

{"title":"Mean-shift Object Tracking Algorithm with Systematic Sampling Technique","authors":"Y. Bandung, Aris Ardiansyah","doi":"10.7454/MST.V25I1.3789","DOIUrl":"https://doi.org/10.7454/MST.V25I1.3789","url":null,"abstract":"Mean shift is a fast object tracking algorithm that only considers pixels in an object area, hence its relatively small computational load. This algorithm is suitable for use in real-time conditions in terms of execution time. The use of histograms causes this algorithm to be relatively resistant to rotation and changes in object size. However, its resistance to lighting changes is not optimal. This study aims to improve the performance of the algorithm under lighting changes and reduce its processing time. The proposed technique involves the use of sampling techniques to reduce the number of iterations, optimization of candidate search object locations using simulated annealing, and addition of tolerance parameter to optimize object location search and area-based weighting instead of the Epanechnikov kernel. The results of the one-tail t-test with two independent sample groups reveal that the average performance of the proposed algorithm is significantly better than that of the traditional mean-shift algorithm in terms of resistance to lighting changes and processing time per video frame. In the test involving 999 frames of video images, the average processing time of the proposed algorithm is 83.66 ms, whereas that of the traditional mean-shift algorithm is 116.86 ms.","PeriodicalId":42980,"journal":{"name":"Makara Journal of Technology","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44418424","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 Study of a Buckling Restrained Brace (BRB) in Steel Structures and Comparison with a Convergent Ordinary Brace (OCB) Under Static and Dynamic Loading 钢结构屈曲约束支撑（BRB）的数值研究及与普通收敛支撑（OCB）在静、动荷载作用下的比较

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Makara Journal of Technology Pub Date : 2021-04-30 DOI: 10.7454/MST.V25I1.3908

Fatemeh Habibpour

引用次数: 0

Improving the Intellectual and Social Development of Children with Autism: Design of a Training Center for Autism 促进自闭症儿童的智力和社会发展——自闭症培训中心的设计

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Makara Journal of Technology Pub Date : 2021-04-30 DOI: 10.7454/MST.V25I1.3920

H. Jalalian

{"title":"Improving the Intellectual and Social Development of Children with Autism: Design of a Training Center for Autism","authors":"H. Jalalian","doi":"10.7454/MST.V25I1.3920","DOIUrl":"https://doi.org/10.7454/MST.V25I1.3920","url":null,"abstract":"Research on the relationship between the role of architecture and the psychology of children with autism, which indicates that appropriate environments for these children can have a significant effect on their healthcare process, has been recently conducted. However, statistics show that autism spectrum disorders are pervasive, and its extent in Iran has been increasing. Moreover, centers that are specifically designed for children with autism are limited, and paradigms are made without considering the mood of these children. Given the role of architecture in designing a suitable space for these children, an investigation that can identify the specific requirements of these children from the architectural perspective is necessary. This research aims to design spaces that, in addition to providing relief to children, can provide a proper platform for intellectual development, social development, and promotion of social interactions. The purpose of this study is to design a training center for children with autism under 5 years old. Most of the spaces considered in the physical program have been designed to be flexible and capable of converting into spaces for children aged 5 to 14 years. The design of the center needs to take into account the qualitative criteria to build a sense of security and attachment so that it can be a place for the development and evolution of education for children with autism and the improvement of the social relationships of these children.","PeriodicalId":42980,"journal":{"name":"Makara Journal of Technology","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41610890","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

ISO 9001:2015 Risk-based Thinking: A Framework using Fuzzy-Support Vector Machine ISO 9001:2015基于风险的思维:使用模糊支持向量机的框架

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Makara Journal of Technology Pub Date : 2020-12-20 DOI: 10.7454/mst.v24i3.3944

Ralph Sherwin A. Corpuz

{"title":"ISO 9001:2015 Risk-based Thinking: A Framework using Fuzzy-Support Vector Machine","authors":"Ralph Sherwin A. Corpuz","doi":"10.7454/mst.v24i3.3944","DOIUrl":"https://doi.org/10.7454/mst.v24i3.3944","url":null,"abstract":"Risk-based thinking (RBT) is one of the distinct new features of the International Organization for Standardization 9001:2015. Interestingly, the standard does not prescribe any tools. Hence, organizations are puzzled as to the extent of conformance. Some organizations have adopted formal tools. However, these tools seem insufficient in linking the standard into an evidence-based decision support system. To resolve gaps in RBT implementation, this paper proposes a framework based on fuzzy inference system (FIS) and support vector machine (SVM) to automate risk analysis and evaluation, proposal and verification of action plans, and prediction of the feasibility of risks and opportunities according to text patterns. Modeling results indicate that the framework has no significant difference in terms of accuracy compared with the conventional method. Both FIS-1 and FIS-2 models, however, are statistically significantly faster at 3.26 and 1.15 s, respectively. Meanwhile, the SVM model, whose text classification features are not evident in the conventional method, has a 97.16% classification accuracy and 2.6% confusion error during training, and 95% classification accuracy during testing. Results affirm that FIS and SVM are efficient tools in feasibly conforming with the RBT requirements of the ISO 9001:2015 international standard.","PeriodicalId":42980,"journal":{"name":"Makara Journal of Technology","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2020-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71343162","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: 3

Mechanical Alloying-assisted Coating of Fe–Al Powders on Steel Substrate 机械合金化辅助铁基铝基粉末涂层

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Makara Journal of Technology Pub Date : 2020-12-20 DOI: 10.7454/mst.v24i3.3690

A. Noviyanto, S. Harjanto, W. Widayatno, A. Wismogroho, M. I. Amal, N. Rochman

引用次数: 1

A Density Functional Theory Study on using Montmorillonite to Reduce Air Pollution 蒙脱石减少大气污染的密度泛函理论研究

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Makara Journal of Technology Pub Date : 2020-12-20 DOI: 10.7454/mst.v24i3.3592

T. Wungu, M. Yusfi, S. Suprijadi

引用次数: 1

Ionic Conductiviy of Alginate-NH4Cl Polymer Electrolyte 海藻酸盐- nh4cl聚合物电解质的离子电导率

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Makara Journal of Technology Pub Date : 2020-12-20 DOI: 10.7454/mst.v24i3.3841

Nurhasniza Mamajan Khan, Noor Saadiah Mohd Ali, Ahmad Faizrin Ahmad Fuzlin, A. S. Samsudin

引用次数: 5

Use of Viscoplastic Damper for Improving the Resistance of Steel Frames to Blast Loading 粘塑性阻尼器在提高钢架抗爆破荷载中的应用

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Makara Journal of Technology Pub Date : 2020-12-20 DOI: 10.7454/mst.v24i3.3907

G. Abdollahzadeh, Hadi Faghihmaleki, H. H. Jamnani, Atefeh Ebrahimi Bardar

{"title":"Use of Viscoplastic Damper for Improving the Resistance of Steel Frames to Blast Loading","authors":"G. Abdollahzadeh, Hadi Faghihmaleki, H. H. Jamnani, Atefeh Ebrahimi Bardar","doi":"10.7454/mst.v24i3.3907","DOIUrl":"https://doi.org/10.7454/mst.v24i3.3907","url":null,"abstract":"In this paper, we evaluated the effect of viscoplastic dampers on the response of steel frames under blast loading. We used SAP2000 software and link elements to investigate the responses of nine-story steel frames with and without dampers. The proposed viscoplastic damper is a new type of viscous damper. The application of this damper is based on the availability of its constituent materials. The damper acts as a viscoelastic damper at low levels of vibration, but it acts as a combination of viscoelastic operator and metal-yielding device at extreme levels of vibration. With respect to the height of the structure, the need for the correct distribution is underlined, which is addressed by developing a non-uniform loading at the height of the structure. We used A.T.-Blast software program to measure the required parameters to calculate the pressure coming from the blast. The comparison of the simulation results with and without dampers demonstrated about 33% reduction in responses with respect to the top floor displacements and about 59% reduction in modeling the nine-story steel frame with brass and bending moments at column bases, which represents the optimal operation of viscoplastic damper in steel frame under blast loading. It is demonstrated that using viscoplastic damper with brace improves the blast resistance of structures.","PeriodicalId":42980,"journal":{"name":"Makara Journal of Technology","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2020-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46930203","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

Influence of the Shaping Process on the Tensile Properties of Steel Reinforcement Bars Carbon Steel Grades BJTP24 and BJTS40 成型工艺对BJTP24和BJTS40级钢筋拉伸性能的影响

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Makara Journal of Technology Pub Date : 2020-12-20 DOI: 10.7454/mst.v24i3.3914

N. Handika, R. A. Idhar, J. Sjah, E. Arijoeni, E. Tjahjono

{"title":"Influence of the Shaping Process on the Tensile Properties of Steel Reinforcement Bars Carbon Steel Grades BJTP24 and BJTS40","authors":"N. Handika, R. A. Idhar, J. Sjah, E. Arijoeni, E. Tjahjono","doi":"10.7454/mst.v24i3.3914","DOIUrl":"https://doi.org/10.7454/mst.v24i3.3914","url":null,"abstract":"According to the current applicable national standard in Indonesia, i.e. SNI 07 2529 1991, in addition to the limitation on the loading rate, the steel bar must be reduced, formed, or lathed, as part of the shaping process of samples. This study determined and compared the effect of the shaping process on the yield strength, ultimate strength, and percent elongation by conducting tensile tests of steel bar grade BJTS40, i.e. deformed bar type of steel, and grade BJTP24, i.e., plain bar type of steel. Three diameters of the deformed bar (BJTS40) and one diameter of the plain bar (BJTP24) were used. Samples of the bars were taken randomly from a local distributor in the Greater Jakarta area. Each 1 m of the bar is divided into two, i.e. one end being the non-shaped sample and the other end being the shaped sample. Tensile tests of these two sides were conducted. This study determined that the shaping process influences the results of the tensile test, particularly the variation of percent elongation. Moreover, the effects of the shaping process can be inferred from the high coefficients of variation of yield strength (4.33%) and ultimate strength (2.40%) of the shaped sample. The results of this study, which elucidate the effects of the shaping process on tensile tests, can be used as an information resource in engineering practice.","PeriodicalId":42980,"journal":{"name":"Makara Journal of Technology","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2020-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47331701","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

Performance of Free-space Optical Communication Systems using Optical Amplifiers under Amplify-forward and Amplify-received Configurations 使用光放大器的自由空间光通信系统在放大前向和放大接收配置下的性能

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Makara Journal of Technology Pub Date : 2020-12-20 DOI: 10.7454/mst.v24i3.3648

U. Darusalam, A. Raj, Fitri Yuli Zulkifli, P. Priambodo, E. Rahardjo

{"title":"Performance of Free-space Optical Communication Systems using Optical Amplifiers under Amplify-forward and Amplify-received Configurations","authors":"U. Darusalam, A. Raj, Fitri Yuli Zulkifli, P. Priambodo, E. Rahardjo","doi":"10.7454/mst.v24i3.3648","DOIUrl":"https://doi.org/10.7454/mst.v24i3.3648","url":null,"abstract":"With the growth of digital technology in the stage of industrial revolution 4.0, the demand for broadcasting large amounts of information to last mile users has increased. Free-space optical (FSO) communication is one of the telecommunication platforms that has shown immense potential in meeting the demand for information broadcasting. In this work, the performance of FSO communication based on wavelength division multiplexing with a data rate of 80 Gbps is investigated through simulations. The configuration of optical amplifiers in the FSO system is set up on the basis of the amplifyforward and amplify-received configurations to expand the network. The investigation is aimed at identifying the best optical signal amplification between an erbium-doped fiber amplifier (EDFA) and a semiconductor optical amplifier (SOA) under an atmospheric channel. Simulation results show that the EDFA performs better than the SOA in terms of the optical signal amplification for eight channels of the C band. The maximum optical propagation path length under the atmospheric channel for the amplify-forward and -received schemes using the EDFA is 1.7 km, with the bit error rate achieved at 10 −6 .","PeriodicalId":42980,"journal":{"name":"Makara Journal of Technology","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2020-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42034913","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: 9