Indonesian Journal of Computing Engineering and Design最新文献_第2页

An Improved Proactive Handoff Scheme (IPHS) for Target Channel Selection in Cognitive Radio Network 一种用于认知无线电网络中目标信道选择的改进主动切换方案（IPHS）

Indonesian Journal of Computing Engineering and Design Pub Date : 2023-04-03 DOI: 10.35806/ijoced.v5i1.293

J. A. Orokpo, A. Tekanyi, H. A. Abdulkareem, E. Agbon

{"title":"An Improved Proactive Handoff Scheme (IPHS) for Target Channel Selection in Cognitive Radio Network","authors":"J. A. Orokpo, A. Tekanyi, H. A. Abdulkareem, E. Agbon","doi":"10.35806/ijoced.v5i1.293","DOIUrl":"https://doi.org/10.35806/ijoced.v5i1.293","url":null,"abstract":"In recent years, one of the challenges of spectrum allocation and utilization was fixed spectrum allocation which lead to spectrum scarcity and underutilization. In an attempt to address this challenge, Cognitive Radio Network (CRN) which uses Dynamic Spectrum Access (DSA) was proposed. It allows licensed users’ or Primary Users’ (PUs) spectrum to be shared with unlicensed users or Secondary Users (SUs). DSA could be achieved by developing an effective channel selection scheme for SUs spectrum handoff. Selecting an appropriate channel for the SUs to continue their interrupted transmission is a challenging task. Several researchers have used different techniques such as Novel Proactive Handoff Scheme (NPHS) to enhance accurate channel selection for spectrum handoff by considering only channel occupancy. These techniques still suffer some set back like high number of spectrum handoff and delay in channel selection. This paper presents an Improved Proactive Spectrum Handoff Scheme (IPHS) for accurate target channel selection in CRN. The improvement is achieved by considering channel signal quality in addition to channel occupancy as a criteria for the selection of a backup channel for spectrum handoff. Simulation results showed that the IPHS reduced the number of spectrum handoff by 15% and 26% as compared to NPHS and IEEE 802.11 scheme respectively. The average delay was also reduced by 13% and 35% as compared to NPHS and IEEE 802.11 scheme respectively.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47647845","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 Electron Tunneling Lifetime by Projected Green’s Function Approach in Single Quantum Well Semiconductor 单量子阱半导体电子隧穿寿命的投影格林函数法研究

Indonesian Journal of Computing Engineering and Design Pub Date : 2023-04-03 DOI: 10.35806/ijoced.v5i1.306

Yanoar Pribadi Sarwono, Ruiqin Q. Zhang, G. Sunnardianto

引用次数: 0

Evaluation of Kinetic Mechanism for Modelling Dimethyl Ether Jet Diffusion Flame 二甲醚喷射扩散火焰模拟的动力学机理评价

Indonesian Journal of Computing Engineering and Design Pub Date : 2022-10-03 DOI: 10.35806/ijoced.v4i2.298

A. S. Auzani, S. Tobing, Ridhwan Sunandar, R. Anggarani, C. Wibowo, Dedi Sutarma

引用次数: 0

Deformation Behavior of Grouted Sleeve Wall Connector Under Shear Load in Precast Process of Concrete Wall 混凝土墙预制过程中灌浆套筒墙连接件在剪切荷载作用下的变形行为

Indonesian Journal of Computing Engineering and Design Pub Date : 2022-10-03 DOI: 10.35806/ijoced.v4i2.263

J. H. Ling, Ahmad Baharuddin Abd. Rahman, I. S. Ibrahim

{"title":"Deformation Behavior of Grouted Sleeve Wall Connector Under Shear Load in Precast Process of Concrete Wall","authors":"J. H. Ling, Ahmad Baharuddin Abd. Rahman, I. S. Ibrahim","doi":"10.35806/ijoced.v4i2.263","DOIUrl":"https://doi.org/10.35806/ijoced.v4i2.263","url":null,"abstract":"This study investigated the behaviour of grouted sleeve connectors under shear loads. Tapered Head Sleeve (THS) connectors were fabricated from mild steel pipes. Five test specimens and a control specimen were produced. Each test specimen comprised two walls, which were connected by THS. An incremental shear load was applied at the joint until the specimen failed. The behaviour of the specimens was analyzed based on the load-displacement response. The feasibility of THS as a wall connection was determined based on ductility ratio, failure mode, performance ratio, and serviceability ratio. THS required an embedded length of 8 times the bar diameter to generate sufficient bond strength. The specimens experienced bar dowel action, which led to a significant horizontal displacement with a ductility ratio of 27.5 to 55.9. The test specimens offered shear capacities comparable to the control specimen, with performance ratios close to 1.0. The service load was only 1/3 of the ultimate capacity, and thus THS was ineffective in resisting shear load. Shear keys would be required to strengthen the joint of the specimen.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44370798","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

Multiple Criteria Decision Analysis in HDMI Splitter Selection Using Complex Proportional Assessment Method 基于复比例评估法的HDMI分配器选择多准则决策分析

Indonesian Journal of Computing Engineering and Design Pub Date : 2022-10-03 DOI: 10.35806/ijoced.v4i2.296

Arisantoso Arisantoso, T. Mantoro, A. Olowolayemo, A. Alkalbani

{"title":"Multiple Criteria Decision Analysis in HDMI Splitter Selection Using Complex Proportional Assessment Method","authors":"Arisantoso Arisantoso, T. Mantoro, A. Olowolayemo, A. Alkalbani","doi":"10.35806/ijoced.v4i2.296","DOIUrl":"https://doi.org/10.35806/ijoced.v4i2.296","url":null,"abstract":"High-Definition Multimedia Interface (HDMI) technology is used for devices such as HDTVs, Projectors, and DVD players. One HDMI cable can only connect one device, even though, when needed, one computer or laptop can be displayed on several televisions or projectors using HDMI Splitter. HDMI Splitter is an accessory that displays content on multiple screens. HDMI Splitter has been circulated with various brands that offer different capabilities and specifications. Therefore, Therefore, thorough consideration is needed in choosing the right HDMI Splitter. This study aims to build a decision support system with the Multiple Criteria Decision Analysis (MCDA) approach using Complex Proportional Assessment (COPRAS). The COPRAS method solves the selection problem by calculating the utility level of alternatives, which shows the extent to which an alternative is better or worse than other alternatives through a comparison process. Based on existing studies, the utility values of each alternative were obtained, namely: Robot HDMI Splitter producing a value of 53.73%, Vention HDMI Splitter producing a value of 65.63%, Bafo HDMI Splitter producing a value of 97.13, and PX HDMI Splitter producing a value of 100%. Hence, based on testing through the black box, the best alternative is PX HDMI Splitter.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42404809","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 Review on Dynamic Buffer Traffic Condition Protocol in Telemedicine 远程医疗中的动态缓冲流量条件协议综述

Indonesian Journal of Computing Engineering and Design Pub Date : 2022-10-03 DOI: 10.35806/ijoced.v4i2.247

M. Iyobhebhe, Agburu O. Adikpe, J. Bashayi, Amlabu Caleb Akezi, I. Botson, Ezugwu Chukwudi, Omojola Bankole Akinyele

{"title":"A Review on Dynamic Buffer Traffic Condition Protocol in Telemedicine","authors":"M. Iyobhebhe, Agburu O. Adikpe, J. Bashayi, Amlabu Caleb Akezi, I. Botson, Ezugwu Chukwudi, Omojola Bankole Akinyele","doi":"10.35806/ijoced.v4i2.247","DOIUrl":"https://doi.org/10.35806/ijoced.v4i2.247","url":null,"abstract":"Various MAC-protocol has been adopted over the years in Telemedicine, also known as Wireless Body Area Network system (WBANs), to enhance the proper transmission of the busy congestion of data message. However, these techniques could not coordinate traffic congestion in the receiver node, which could make the receiver nodes experience an \"active mode\" most of the time compared to the transmit node. This is dangerous to the network system because of uncontrollable energy usage. In this protocol, the intelligent sensor is strategically located around or implanted in the human body for the collection of human body physiological parameters. WBANs experienced some limitations such as latency and excessive consumption of energy which may hinder the lifetime maximization of the system if not taken care of properly. In this work, four elements are responsible for carrying-out only traffic data, and they are implemented by using the highest priority sensor nodes within a short period used for communicating to the Buffer Traffic Condition (BTC) discussed and the traffic measurement to mitigate active-mode interval in the receiving phase of the improved superframe structure of IEEE 802.15.6. Furthermore, meaningful information about the superframe to mitigate the busy traffic and enhance this protocol was also discussed as its possible functions with the help of an adaptive system. No article depicts the analysis of the work on the dynamic buffer traffic condition scheme, and this proposed scheme can improve on the existing one.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49515461","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

Finite Element Simulation of Power Weeder Machine Frame 电动除草机机架有限元仿真

Indonesian Journal of Computing Engineering and Design Pub Date : 2022-10-03 DOI: 10.35806/ijoced.v4i2.291

Angger Bagus Prasetiyo, K. A. Sekarjati

引用次数: 3

Methods to Increase Microalgae Carbohydrates for Bioethanol Production 生物乙醇生产中增加微藻碳水化合物的方法

Indonesian Journal of Computing Engineering and Design Pub Date : 2022-10-03 DOI: 10.35806/ijoced.v4i2.301

Esam Abu Baker Ali, M. Idris, I. Irianto, M. Zulkarnain, S. Alam, Ayu Amanah, L. Firman, Donny Mustika

{"title":"Methods to Increase Microalgae Carbohydrates for Bioethanol Production","authors":"Esam Abu Baker Ali, M. Idris, I. Irianto, M. Zulkarnain, S. Alam, Ayu Amanah, L. Firman, Donny Mustika","doi":"10.35806/ijoced.v4i2.301","DOIUrl":"https://doi.org/10.35806/ijoced.v4i2.301","url":null,"abstract":"Compared to traditional lignocellulose biomass, microalgae contain little or no lignin. Traditionally, bioethanol production from microalgae undergoes three major steps: (i) pretreatment; (ii) polysaccharides hydrolysis into simple sugars; and (iii) sugar conversion into bioethanol by fermentation. Microalgae convert sunlight, water, and CO2 into algal biomass. Diatoms, green algae, bluegreen algae, and golden algae are four main classes of microalgae, whereas the two main species of algae are filamentous and phytoplankton algae. Microalgae convert solar energy efficiently, producing an enormous number of various metabolites. Many studies have been conducted to convert microalgae into various biofuels, such as biodiesel, bioethanol, biohydrogen, and biogas. However, compared to biodiesel, bioethanol production from algae throughfermentation consumes less energy with its simplified process. Considering these advantages, a number of potential applications for microalgae have been proposed and developed. Despite the promising of bioethanol from microalgae, it still has a number of obstacles, such as the low fermentable carbohydrate content of microalgae. This article intends to discuss the methods to increase microalgae carbohydrates thoroughly. To solve this problem, several nutritional starvations/limitations, like nitrogen and phosphorous starvation, are currently being considered in this paper.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41793320","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

WebXR Asset Management in Developing Virtual Reality Learning Media WebXR资产管理在虚拟现实学习媒体开发中的应用

Indonesian Journal of Computing Engineering and Design Pub Date : 2022-04-01 DOI: 10.35806/ijoced.v4i1.253

Tombak Matahari

引用次数: 3

Lessons from Brazil: Opportunities of Bioethanol Biofuel in Indonesia 巴西的经验教训:印尼生物乙醇生物燃料的机遇

Indonesian Journal of Computing Engineering and Design Pub Date : 2022-04-01 DOI: 10.35806/ijoced.v4i1.239

Ibham Veza, D. W. Djamari, N. Hamzah, N. Tamaldin, Mairizal Mairizal, Handi Handi, Y. Yusrizal, R. Usman

{"title":"Lessons from Brazil: Opportunities of Bioethanol Biofuel in Indonesia","authors":"Ibham Veza, D. W. Djamari, N. Hamzah, N. Tamaldin, Mairizal Mairizal, Handi Handi, Y. Yusrizal, R. Usman","doi":"10.35806/ijoced.v4i1.239","DOIUrl":"https://doi.org/10.35806/ijoced.v4i1.239","url":null,"abstract":"Brazil has a long tradition of bioethanol production from sugarcane. Following the Middle East crisis in the 1970s, the oil price increased twofold, doubling Brazil’s spending on oil imports. As a result, the country had to find an alternative type of fuel to reduce its expenditure on conventional petrol fuels. With its vast tropical land conditions, the Brazilian government then put massive effort to establish the infrastructure and research of bioethanol from 1975 and 1989. Research plays a pivotal role in the success of Brazil’s ethanol industry. The country was heavily criticised at the beginning of the programme, but today, Brazil is the second-largest ethanol producer after the USA. Brazil produces the cheapest ethanol in the world and does not depend on fossil fuel to supply its energy demand. Indonesia and Brazil share the same landscape and geographical advantages. This paper aims to discuss the success of the Brazilian bioethanol industry and draw important lessons from it. In a nutshell, Indonesia should increase bioethanol production from renewable sources. Also, the modernization of distilleries facilities, the establishment of new production plants, the introduction of subsidies and the reduction of taxes for ethanol producers are needed. In summary, apart from massive research and development, we concluded that effective and strong long-term government commitment play important role in shaping the future of the Indonesian bioethanol industry.","PeriodicalId":34235,"journal":{"name":"Indonesian Journal of Computing Engineering and Design","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41951065","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