Pub Date : 2024-02-05DOI: 10.9734/jerr/2024/v26i21079
An An Anisarida, Irvan Budi Wicaksono
Bandung is the largest metropolitan city in West Java Province and serves as its provincial capital. One of the locations where vehicle queues or traffic congestion occurs is at the level crossings between the highway and railway tracks, including the direct crossing (JPL) at Andir on LMU Nurtanio Street - Abdul Rahman Saleh Street. The purpose of this research is to assess the performance of the existing road section, simulate it using the PTV VISSIM program, and find alternative solutions to the identified problems. In this study, primary data was obtained through direct field measurements, including vehicle volume, queue length, and road geometry data. Additionally, secondary data on the number of trains passing through the crossing was obtained from PT Kereta Indonesian Fire. The PTV VISSIM program used in this analysis is a student-licensed program, which implies limitations and simplifications in the analysis. The performance calculation of the road section yielded a degree of saturation (Ds) value of 0.73 for LMU Nurtanio Street and 0.77 for Abdul Rahman Saleh Street. According to the road service levels set by the government, both roads fall below service level C. The PTV VISSIM modeling results indicated a queue length of 66.59 m for LMU Nurtanio Street and 105.18 m for Abdul Rahman Saleh Street. Bandung study uses PTV VISSIM to assess LMU Nurtanio - Abdul Rahman Saleh Streets, revealing congestion issues. Queue lengths highlight improvement needs.
万隆是西爪哇省最大的大都市，也是该省的省会。车辆排队或交通拥堵的地点之一是公路与铁轨之间的平交道口，包括位于安迪尔的 LMU Nurtanio 街 - Abdul Rahman Saleh 街的直接交叉口 (JPL)。本研究的目的是评估现有路段的性能，使用 PTV VISSIM 程序进行模拟，并针对发现的问题寻找替代解决方案。在这项研究中，主要数据是通过直接实地测量获得的，包括车辆流量、排队长度和道路几何数据。此外，还从 PT Kereta Indonesian Fire 公司获得了通过该交叉口的火车数量的二手数据。本分析中使用的 PTV VISSIM 程序是学生许可程序，因此在分析中存在局限性和简化。通过对路段的性能计算，LMU Nurtanio 街的饱和度（Ds）值为 0.73，Abdul Rahman Saleh 街的饱和度（Ds）值为 0.77。根据政府规定的道路服务等级，这两条道路的服务等级均低于 C 级。PTV VISSIM 模型结果显示，LMU Nurtanio 街的排队长度为 66.59 米，Abdul Rahman Saleh 街的排队长度为 105.18 米。万隆研究使用 PTV VISSIM 评估了 LMU Nurtanio - Abdul Rahman Saleh 街道，揭示了拥堵问题。队列长度凸显了改善需求。
{"title":"Enhancing Traffic Flow and Safety at LMU Nurtanio Road Crossings - Abdul Rahman Saleh Intersection in Bandung","authors":"An An Anisarida, Irvan Budi Wicaksono","doi":"10.9734/jerr/2024/v26i21079","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i21079","url":null,"abstract":"Bandung is the largest metropolitan city in West Java Province and serves as its provincial capital. One of the locations where vehicle queues or traffic congestion occurs is at the level crossings between the highway and railway tracks, including the direct crossing (JPL) at Andir on LMU Nurtanio Street - Abdul Rahman Saleh Street. The purpose of this research is to assess the performance of the existing road section, simulate it using the PTV VISSIM program, and find alternative solutions to the identified problems. In this study, primary data was obtained through direct field measurements, including vehicle volume, queue length, and road geometry data. Additionally, secondary data on the number of trains passing through the crossing was obtained from PT Kereta Indonesian Fire. The PTV VISSIM program used in this analysis is a student-licensed program, which implies limitations and simplifications in the analysis. The performance calculation of the road section yielded a degree of saturation (Ds) value of 0.73 for LMU Nurtanio Street and 0.77 for Abdul Rahman Saleh Street. According to the road service levels set by the government, both roads fall below service level C. The PTV VISSIM modeling results indicated a queue length of 66.59 m for LMU Nurtanio Street and 105.18 m for Abdul Rahman Saleh Street. Bandung study uses PTV VISSIM to assess LMU Nurtanio - Abdul Rahman Saleh Streets, revealing congestion issues. Queue lengths highlight improvement needs.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":"56 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139863594","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}
Pub Date : 2024-02-05DOI: 10.9734/jerr/2024/v26i21079
An An Anisarida, Irvan Budi Wicaksono
Bandung is the largest metropolitan city in West Java Province and serves as its provincial capital. One of the locations where vehicle queues or traffic congestion occurs is at the level crossings between the highway and railway tracks, including the direct crossing (JPL) at Andir on LMU Nurtanio Street - Abdul Rahman Saleh Street. The purpose of this research is to assess the performance of the existing road section, simulate it using the PTV VISSIM program, and find alternative solutions to the identified problems. In this study, primary data was obtained through direct field measurements, including vehicle volume, queue length, and road geometry data. Additionally, secondary data on the number of trains passing through the crossing was obtained from PT Kereta Indonesian Fire. The PTV VISSIM program used in this analysis is a student-licensed program, which implies limitations and simplifications in the analysis. The performance calculation of the road section yielded a degree of saturation (Ds) value of 0.73 for LMU Nurtanio Street and 0.77 for Abdul Rahman Saleh Street. According to the road service levels set by the government, both roads fall below service level C. The PTV VISSIM modeling results indicated a queue length of 66.59 m for LMU Nurtanio Street and 105.18 m for Abdul Rahman Saleh Street. Bandung study uses PTV VISSIM to assess LMU Nurtanio - Abdul Rahman Saleh Streets, revealing congestion issues. Queue lengths highlight improvement needs.
万隆是西爪哇省最大的大都市，也是该省的省会。车辆排队或交通拥堵的地点之一是公路与铁轨之间的平交道口，包括位于安迪尔的 LMU Nurtanio 街 - Abdul Rahman Saleh 街的直接交叉口 (JPL)。本研究的目的是评估现有路段的性能，使用 PTV VISSIM 程序进行模拟，并针对发现的问题寻找替代解决方案。在这项研究中，主要数据是通过直接实地测量获得的，包括车辆流量、排队长度和道路几何数据。此外，还从 PT Kereta Indonesian Fire 公司获得了通过该交叉口的火车数量的二手数据。本分析中使用的 PTV VISSIM 程序是学生许可程序，因此在分析中存在局限性和简化。通过对路段的性能计算，LMU Nurtanio 街的饱和度（Ds）值为 0.73，Abdul Rahman Saleh 街的饱和度（Ds）值为 0.77。根据政府规定的道路服务等级，这两条道路的服务等级均低于 C 级。PTV VISSIM 模型结果显示，LMU Nurtanio 街的排队长度为 66.59 米，Abdul Rahman Saleh 街的排队长度为 105.18 米。万隆研究使用 PTV VISSIM 评估了 LMU Nurtanio - Abdul Rahman Saleh 街道，揭示了拥堵问题。队列长度凸显了改善需求。
{"title":"Enhancing Traffic Flow and Safety at LMU Nurtanio Road Crossings - Abdul Rahman Saleh Intersection in Bandung","authors":"An An Anisarida, Irvan Budi Wicaksono","doi":"10.9734/jerr/2024/v26i21079","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i21079","url":null,"abstract":"Bandung is the largest metropolitan city in West Java Province and serves as its provincial capital. One of the locations where vehicle queues or traffic congestion occurs is at the level crossings between the highway and railway tracks, including the direct crossing (JPL) at Andir on LMU Nurtanio Street - Abdul Rahman Saleh Street. The purpose of this research is to assess the performance of the existing road section, simulate it using the PTV VISSIM program, and find alternative solutions to the identified problems. In this study, primary data was obtained through direct field measurements, including vehicle volume, queue length, and road geometry data. Additionally, secondary data on the number of trains passing through the crossing was obtained from PT Kereta Indonesian Fire. The PTV VISSIM program used in this analysis is a student-licensed program, which implies limitations and simplifications in the analysis. The performance calculation of the road section yielded a degree of saturation (Ds) value of 0.73 for LMU Nurtanio Street and 0.77 for Abdul Rahman Saleh Street. According to the road service levels set by the government, both roads fall below service level C. The PTV VISSIM modeling results indicated a queue length of 66.59 m for LMU Nurtanio Street and 105.18 m for Abdul Rahman Saleh Street. Bandung study uses PTV VISSIM to assess LMU Nurtanio - Abdul Rahman Saleh Streets, revealing congestion issues. Queue lengths highlight improvement needs.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":"4 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139803839","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}
Pub Date : 2024-02-02DOI: 10.9734/jerr/2024/v26i21078
Ikechi T. Ndamati, Olaoluwa S. Olayemi, Afam D. Madu
This article presents a demonstration of the interferometric characteristics inherent in an unbalanced Mach-Zehnder Interferometer (MZI), implemented on a silicon-on-insulator platform through precision fabrication techniques. The investigation delves into the intricate relationship between the free spectral range (FSR) and various lengths of unbalanced MZIs. Notably, a comparison between simulation and experimental outcomes reveals a remarkable agreement.
{"title":"Demonstration of Interferometric Properties of Unbalanced Mach-Zehnder Interferometer","authors":"Ikechi T. Ndamati, Olaoluwa S. Olayemi, Afam D. Madu","doi":"10.9734/jerr/2024/v26i21078","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i21078","url":null,"abstract":"This article presents a demonstration of the interferometric characteristics inherent in an unbalanced Mach-Zehnder Interferometer (MZI), implemented on a silicon-on-insulator platform through precision fabrication techniques. The investigation delves into the intricate relationship between the free spectral range (FSR) and various lengths of unbalanced MZIs. Notably, a comparison between simulation and experimental outcomes reveals a remarkable agreement.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":"57 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139871184","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}
Pub Date : 2024-02-01DOI: 10.9734/jerr/2024/v26i21077
Emmanuel E. Edemumoh, Emaime J. Uwanta, Joachim J. Awaka-Ama, G. J. Udo, Nsikan J. Etukudo, A. Nyong, Raphael Igwe, Christiana P. Okon, Elvis O. Abasi
This work describes scanning electron microscope and XRD characterization of untapped clay deposits in Itu Local Government Area Akwa Ibom State and its potentials as raw material for petroleum refining. The structure and morphology of the raw kaolin clay and metakaolin were analyzed using XRD and SEM. The XRD data indicates 48.0 % quartz, 30.0% kaolinite, 3.0 % chlorite, 16.0 % illite and 2.0% albite in the raw kaolin and 68.3 % quartz, 17.3 % orthoclase, 5.9 % muscovite, 1.8 % illite , 6.68 %, albite in the metakaolin from Ikot Uso Akpan and 16.2 % kaolinite, 67.0% quartz, 2.5 % muscovite, 5.5 % orthoclase, 1.4 % chlorite, and 7.0 % albite were revealed in Ekim Itam raw kaolin. 66.0 % quartz, 10.0 % muscovite, 15.0 % orthoclase, 5.0 % illite, 5.0 % albite were recorded in the metakaolin. The XRD results confirmed the presence of quartz and alumina mineral phases from both kaolin deposits. Calcination at 1000oC increased the crystalline structure of the metakaolin and did not significantly modify surface morphology of the kaolin indicating stability of kaolin structure, one the desired property of a good zeolite. The SEM results indicated heterogeneous size and spongy like porous shape. There was no significant change in the surface morphology of the heterogeneous size calcined kaolin compared with untreated kaolin. The SEM results of the metakaolin kaolin also indicated cubic crystalline structure with well-defined edges. With adequate modification the studied kaolin could be a promising raw material for synthesis of zeolite suitable for bio and fossil fuel processing.
{"title":"Structural and Morphological Analysis of Untapped Clay Deposits in Itu Local Government Area Akwa Ibom State, Nigeria and its Potentials as Raw Material for Petroleum Refining","authors":"Emmanuel E. Edemumoh, Emaime J. Uwanta, Joachim J. Awaka-Ama, G. J. Udo, Nsikan J. Etukudo, A. Nyong, Raphael Igwe, Christiana P. Okon, Elvis O. Abasi","doi":"10.9734/jerr/2024/v26i21077","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i21077","url":null,"abstract":"This work describes scanning electron microscope and XRD characterization of untapped clay deposits in Itu Local Government Area Akwa Ibom State and its potentials as raw material for petroleum refining. The structure and morphology of the raw kaolin clay and metakaolin were analyzed using XRD and SEM. The XRD data indicates 48.0 % quartz, 30.0% kaolinite, 3.0 % chlorite, 16.0 % illite and 2.0% albite in the raw kaolin and 68.3 % quartz, 17.3 % orthoclase, 5.9 % muscovite, 1.8 % illite , 6.68 %, albite in the metakaolin from Ikot Uso Akpan and 16.2 % kaolinite, 67.0% quartz, 2.5 % muscovite, 5.5 % orthoclase, 1.4 % chlorite, and 7.0 % albite were revealed in Ekim Itam raw kaolin. 66.0 % quartz, 10.0 % muscovite, 15.0 % orthoclase, 5.0 % illite, 5.0 % albite were recorded in the metakaolin. The XRD results confirmed the presence of quartz and alumina mineral phases from both kaolin deposits. Calcination at 1000oC increased the crystalline structure of the metakaolin and did not significantly modify surface morphology of the kaolin indicating stability of kaolin structure, one the desired property of a good zeolite. The SEM results indicated heterogeneous size and spongy like porous shape. There was no significant change in the surface morphology of the heterogeneous size calcined kaolin compared with untreated kaolin. The SEM results of the metakaolin kaolin also indicated cubic crystalline structure with well-defined edges. With adequate modification the studied kaolin could be a promising raw material for synthesis of zeolite suitable for bio and fossil fuel processing.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":"20 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139828639","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}
Pub Date : 2024-02-01DOI: 10.9734/jerr/2024/v26i21077
Emmanuel E. Edemumoh, Emaime J. Uwanta, Joachim J. Awaka-Ama, G. J. Udo, Nsikan J. Etukudo, A. Nyong, Raphael Igwe, Christiana P. Okon, Elvis O. Abasi
This work describes scanning electron microscope and XRD characterization of untapped clay deposits in Itu Local Government Area Akwa Ibom State and its potentials as raw material for petroleum refining. The structure and morphology of the raw kaolin clay and metakaolin were analyzed using XRD and SEM. The XRD data indicates 48.0 % quartz, 30.0% kaolinite, 3.0 % chlorite, 16.0 % illite and 2.0% albite in the raw kaolin and 68.3 % quartz, 17.3 % orthoclase, 5.9 % muscovite, 1.8 % illite , 6.68 %, albite in the metakaolin from Ikot Uso Akpan and 16.2 % kaolinite, 67.0% quartz, 2.5 % muscovite, 5.5 % orthoclase, 1.4 % chlorite, and 7.0 % albite were revealed in Ekim Itam raw kaolin. 66.0 % quartz, 10.0 % muscovite, 15.0 % orthoclase, 5.0 % illite, 5.0 % albite were recorded in the metakaolin. The XRD results confirmed the presence of quartz and alumina mineral phases from both kaolin deposits. Calcination at 1000oC increased the crystalline structure of the metakaolin and did not significantly modify surface morphology of the kaolin indicating stability of kaolin structure, one the desired property of a good zeolite. The SEM results indicated heterogeneous size and spongy like porous shape. There was no significant change in the surface morphology of the heterogeneous size calcined kaolin compared with untreated kaolin. The SEM results of the metakaolin kaolin also indicated cubic crystalline structure with well-defined edges. With adequate modification the studied kaolin could be a promising raw material for synthesis of zeolite suitable for bio and fossil fuel processing.
{"title":"Structural and Morphological Analysis of Untapped Clay Deposits in Itu Local Government Area Akwa Ibom State, Nigeria and its Potentials as Raw Material for Petroleum Refining","authors":"Emmanuel E. Edemumoh, Emaime J. Uwanta, Joachim J. Awaka-Ama, G. J. Udo, Nsikan J. Etukudo, A. Nyong, Raphael Igwe, Christiana P. Okon, Elvis O. Abasi","doi":"10.9734/jerr/2024/v26i21077","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i21077","url":null,"abstract":"This work describes scanning electron microscope and XRD characterization of untapped clay deposits in Itu Local Government Area Akwa Ibom State and its potentials as raw material for petroleum refining. The structure and morphology of the raw kaolin clay and metakaolin were analyzed using XRD and SEM. The XRD data indicates 48.0 % quartz, 30.0% kaolinite, 3.0 % chlorite, 16.0 % illite and 2.0% albite in the raw kaolin and 68.3 % quartz, 17.3 % orthoclase, 5.9 % muscovite, 1.8 % illite , 6.68 %, albite in the metakaolin from Ikot Uso Akpan and 16.2 % kaolinite, 67.0% quartz, 2.5 % muscovite, 5.5 % orthoclase, 1.4 % chlorite, and 7.0 % albite were revealed in Ekim Itam raw kaolin. 66.0 % quartz, 10.0 % muscovite, 15.0 % orthoclase, 5.0 % illite, 5.0 % albite were recorded in the metakaolin. The XRD results confirmed the presence of quartz and alumina mineral phases from both kaolin deposits. Calcination at 1000oC increased the crystalline structure of the metakaolin and did not significantly modify surface morphology of the kaolin indicating stability of kaolin structure, one the desired property of a good zeolite. The SEM results indicated heterogeneous size and spongy like porous shape. There was no significant change in the surface morphology of the heterogeneous size calcined kaolin compared with untreated kaolin. The SEM results of the metakaolin kaolin also indicated cubic crystalline structure with well-defined edges. With adequate modification the studied kaolin could be a promising raw material for synthesis of zeolite suitable for bio and fossil fuel processing.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":"10 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139888539","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}
Pub Date : 2024-01-02DOI: 10.9734/jerr/2024/v26i11058
Liaoyuan Wang, Zhiqiang Liu, Zhiguang Li
In order to improve the efficiency of dredging, reduce the cost of dredging and ensure the safety of operation, this paper designs an underwater building surface dredging robot (hereinafter referred to as "underwater dredging robot"), which mainly includes the following aspects. The structure of underwater dredging robot is planned and divided into dredging system, walking system, driving system and support system. According to the actual work situation and the characteristics of each system, the scheme selection and structure design are carried out, and the overall layout scheme is obtained. The materials of the support system are selected and its force under different working conditions is analyzed. Through finite element analysis and modal analysis, it is verified that its reliability meets the requirements and there is no resonance phenomenon in the work.
{"title":"Robot Design of Underwater Building Surface Dredging - Structural Design","authors":"Liaoyuan Wang, Zhiqiang Liu, Zhiguang Li","doi":"10.9734/jerr/2024/v26i11058","DOIUrl":"https://doi.org/10.9734/jerr/2024/v26i11058","url":null,"abstract":"In order to improve the efficiency of dredging, reduce the cost of dredging and ensure the safety of operation, this paper designs an underwater building surface dredging robot (hereinafter referred to as \"underwater dredging robot\"), which mainly includes the following aspects. The structure of underwater dredging robot is planned and divided into dredging system, walking system, driving system and support system. According to the actual work situation and the characteristics of each system, the scheme selection and structure design are carried out, and the overall layout scheme is obtained. The materials of the support system are selected and its force under different working conditions is analyzed. Through finite element analysis and modal analysis, it is verified that its reliability meets the requirements and there is no resonance phenomenon in the work.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":"75 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139390049","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}
Pub Date : 2023-12-29DOI: 10.9734/jerr/2023/v25i121057
Tao Wu, Zongmin Zhang
The semi-rigid connected steel frame has good displacement ductility and energy dissipation capacity, and the interaction between the traditional steel frame and the filled wall is the critical factor affecting its seismic performance. In this paper, for the semi-rigid steel frame, the composite wall panel and the frame are separated by foam concrete mortar, and the effective connection is achieved by the tensioned steel bar. The premature brittle failure of composite wall panels can be prevented using friction energy dissipation between wall panels. By using ABAQUS simulation method, a semi-rigid steel frame composite wall is established. The failure mode, hysteresis curve and skeleton curve of simulation and test are compared and analyzed, and the reliability of the model is proved. The finite element model with the different number of wall panels is established to analyze its influence on the seismic performance of the structure. The results show that the frame structure realizes the effective connection between the composite wall panel and the concrete-filled steel tube frame, which jointly resists the earthquake action and reduces the damage of the earthquake action to the filled wall. With the increase in the number of composite wall panels, the ultimate load decreases gradually. The initial stiffness of the four layers of wall panels is more significant and decreases rapidly. When the wall panel has three or four layers, the energy dissipation capacity of the specimen is the strongest. The two are relatively close, stable at 24.48, and the increase is 5.15% compared with the second layer of the wall panel, and the increase is 12.72% compared with the third layer of the wall panel.
{"title":"Numerical Analysis Study on Seismic Performance of Semi-Rigid Steel Frame Infilled with Prefabricated Composite Wall Panels","authors":"Tao Wu, Zongmin Zhang","doi":"10.9734/jerr/2023/v25i121057","DOIUrl":"https://doi.org/10.9734/jerr/2023/v25i121057","url":null,"abstract":"The semi-rigid connected steel frame has good displacement ductility and energy dissipation capacity, and the interaction between the traditional steel frame and the filled wall is the critical factor affecting its seismic performance. In this paper, for the semi-rigid steel frame, the composite wall panel and the frame are separated by foam concrete mortar, and the effective connection is achieved by the tensioned steel bar. The premature brittle failure of composite wall panels can be prevented using friction energy dissipation between wall panels. By using ABAQUS simulation method, a semi-rigid steel frame composite wall is established. The failure mode, hysteresis curve and skeleton curve of simulation and test are compared and analyzed, and the reliability of the model is proved. The finite element model with the different number of wall panels is established to analyze its influence on the seismic performance of the structure. The results show that the frame structure realizes the effective connection between the composite wall panel and the concrete-filled steel tube frame, which jointly resists the earthquake action and reduces the damage of the earthquake action to the filled wall. With the increase in the number of composite wall panels, the ultimate load decreases gradually. The initial stiffness of the four layers of wall panels is more significant and decreases rapidly. When the wall panel has three or four layers, the energy dissipation capacity of the specimen is the strongest. The two are relatively close, stable at 24.48, and the increase is 5.15% compared with the second layer of the wall panel, and the increase is 12.72% compared with the third layer of the wall panel.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139144266","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}
Pub Date : 2023-12-28DOI: 10.9734/jerr/2023/v25i121054
Adegoke A. S., Okpeki U. K., Olabisi P. O., Olukoya B. M.
This paper has investigated the performance of a peer-to-peer wireless Adhoc network in an indoor and outdoor environment. The objective is to assess the network performance using metrics such as throughput, packet loss, packet latency and packet delivery ratio (PDR). In the investigation, two measurement locations were chosen; Location 1 (an indoor) and Location 2 (an outdoor). At each of these locations, data packets of 28.6MB was deployed in successions across the network and the responses were observed at the client’s node in real-time mode. Results of the experimentations at both locations show packet losses across the network which is more pronounced at Location 2 (outdoor). Also, higher packet latency was recorded at Location 2 compared to Location 1. The investigation results were compared with similar research works to validate the accuracy of our work. It was thus inferred that between the two locations, the outdoor environment shows a low level of reliability in terms of network performance. A knowledge of these performance metrics is essential for network administrators, engineers and researchers for proper network planning, design and deployment.
{"title":"Performance Evaluation of A Peer-to-peer Wireless Ad-hoc Network","authors":"Adegoke A. S., Okpeki U. K., Olabisi P. O., Olukoya B. M.","doi":"10.9734/jerr/2023/v25i121054","DOIUrl":"https://doi.org/10.9734/jerr/2023/v25i121054","url":null,"abstract":"This paper has investigated the performance of a peer-to-peer wireless Adhoc network in an indoor and outdoor environment. The objective is to assess the network performance using metrics such as throughput, packet loss, packet latency and packet delivery ratio (PDR). In the investigation, two measurement locations were chosen; Location 1 (an indoor) and Location 2 (an outdoor). At each of these locations, data packets of 28.6MB was deployed in successions across the network and the responses were observed at the client’s node in real-time mode. Results of the experimentations at both locations show packet losses across the network which is more pronounced at Location 2 (outdoor). Also, higher packet latency was recorded at Location 2 compared to Location 1. The investigation results were compared with similar research works to validate the accuracy of our work. It was thus inferred that between the two locations, the outdoor environment shows a low level of reliability in terms of network performance. A knowledge of these performance metrics is essential for network administrators, engineers and researchers for proper network planning, design and deployment.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":"54 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139150918","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}
Pub Date : 2023-12-28DOI: 10.9734/jerr/2023/v25i121056
Dosumu, Tijani Tajudeen, E. Ugwoha, Blessing Omowunmi
Haulage trucks are among the primary causes of air pollution in urban areas. The effect of air pollution caused by transportation, especially freight transportation, on public health is a major concern globally. In this study, emissions of haulage trucks operating at Onne Port, Rivers State in Nigeria were assessed to understand their contribution to local air pollution and environmental impact. Real-time measurements of air pollutants were taken using a portable Testo 350 Analyzer and a portable IGRESS Intelligent Detector from seventy (70) haulage trucks at Onne Port grouped according to production years, region of origin, and truck length, and the data obtained were compared with the World Health Organization (WHO) air quality standards. The results revealed that the trucks’ emissions exceeded WHO limits for six criteria pollutants, including NO2, SO2, CO, PM1, PM2.5, and PM10, which are associated with adverse health effects such as respiratory and cardiovascular diseases. Other notable findings included higher concentrations of NO2 at 35.48 ppm and PM2.5 at 300.73 µg/m3 from trucks produced between 2011 and 2021, while older trucks exhibited increased emissions of SO2 at 31.16 ppm, CO at 775.87 ppm, PM1 at 216.75 µg/m3, and PM10 at 341.75 µg/m3. There were no significant variations in pollutant emission concentrations observed within the four categories across different production years. Trucks manufactured in Asia consistently emitted lower pollutant concentrations compared with those from other regions, suggesting the influence of varying emission standards. Interestingly, truck length did not significantly impact emission levels. These findings underscore the urgency of addressing the air quality issues associated with haulage trucks in the region, highlighting the need for stringent emissions control measures.
{"title":"Exhaust Emission Assessment of Haulage Trucks at Onne Port, Nigeria","authors":"Dosumu, Tijani Tajudeen, E. Ugwoha, Blessing Omowunmi","doi":"10.9734/jerr/2023/v25i121056","DOIUrl":"https://doi.org/10.9734/jerr/2023/v25i121056","url":null,"abstract":"Haulage trucks are among the primary causes of air pollution in urban areas. The effect of air pollution caused by transportation, especially freight transportation, on public health is a major concern globally. In this study, emissions of haulage trucks operating at Onne Port, Rivers State in Nigeria were assessed to understand their contribution to local air pollution and environmental impact. Real-time measurements of air pollutants were taken using a portable Testo 350 Analyzer and a portable IGRESS Intelligent Detector from seventy (70) haulage trucks at Onne Port grouped according to production years, region of origin, and truck length, and the data obtained were compared with the World Health Organization (WHO) air quality standards. The results revealed that the trucks’ emissions exceeded WHO limits for six criteria pollutants, including NO2, SO2, CO, PM1, PM2.5, and PM10, which are associated with adverse health effects such as respiratory and cardiovascular diseases. Other notable findings included higher concentrations of NO2 at 35.48 ppm and PM2.5 at 300.73 µg/m3 from trucks produced between 2011 and 2021, while older trucks exhibited increased emissions of SO2 at 31.16 ppm, CO at 775.87 ppm, PM1 at 216.75 µg/m3, and PM10 at 341.75 µg/m3. There were no significant variations in pollutant emission concentrations observed within the four categories across different production years. Trucks manufactured in Asia consistently emitted lower pollutant concentrations compared with those from other regions, suggesting the influence of varying emission standards. Interestingly, truck length did not significantly impact emission levels. These findings underscore the urgency of addressing the air quality issues associated with haulage trucks in the region, highlighting the need for stringent emissions control measures.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":"227 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139152673","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}
Pub Date : 2023-12-28DOI: 10.9734/jerr/2023/v25i121055
Ikopbo Mary, Okpura Nseobong, Udofia Kufre M.
The availability of a good power supply is said to be essential for achieving sustainable development in the majority of developing countries. Huge capital expenditures are necessary to achieve a consistent electricity supply, mostly for grid development. In order to achieve a reliable power supply, this research, titled "Techno-Economic Assessment of Distributed Generation (DG) in Nigeria’s Low-Voltage Distribution Network," aims to integrate a flexible energy mix at the household level. This was achieved by the development of an energy assessment template through computation using ratings of typical electrical devices contained in a three-bedroom flat in Nigeria. The information obtained was aggregated with field data obtained from household energy audit as well as energy band data collected from the power utility company. The optimal energy mix based on formulated algorithm comprised of photovoltaic (PV) system with capacity of 12.7 kW, a petrol generator with capacity of 15 kW, a converter with capacity of 12 kW, and 16 units of batteries (eight connected in series and two connected in parallel) with a nominal optimal hybrid capacity of 15.89 kWh. However, the HOMER Pro software's optimization results revealed that the planned size of PV panels, batteries, and the supply from the public power utility company were adequate for the load. The net present cost, cost of electricity, and operating costs of the proposed hybrid system obtained was $23,714, $0.308 kWh, and $700 per year, respectively. The proposed template is suitable and adaptable to any desired grid size.
{"title":"Techno-Economic Assessment of Distributed Generation in Nigeria’s Low Voltage Distribution Network","authors":"Ikopbo Mary, Okpura Nseobong, Udofia Kufre M.","doi":"10.9734/jerr/2023/v25i121055","DOIUrl":"https://doi.org/10.9734/jerr/2023/v25i121055","url":null,"abstract":"The availability of a good power supply is said to be essential for achieving sustainable development in the majority of developing countries. Huge capital expenditures are necessary to achieve a consistent electricity supply, mostly for grid development. In order to achieve a reliable power supply, this research, titled \"Techno-Economic Assessment of Distributed Generation (DG) in Nigeria’s Low-Voltage Distribution Network,\" aims to integrate a flexible energy mix at the household level. This was achieved by the development of an energy assessment template through computation using ratings of typical electrical devices contained in a three-bedroom flat in Nigeria. The information obtained was aggregated with field data obtained from household energy audit as well as energy band data collected from the power utility company. The optimal energy mix based on formulated algorithm comprised of photovoltaic (PV) system with capacity of 12.7 kW, a petrol generator with capacity of 15 kW, a converter with capacity of 12 kW, and 16 units of batteries (eight connected in series and two connected in parallel) with a nominal optimal hybrid capacity of 15.89 kWh. However, the HOMER Pro software's optimization results revealed that the planned size of PV panels, batteries, and the supply from the public power utility company were adequate for the load. The net present cost, cost of electricity, and operating costs of the proposed hybrid system obtained was $23,714, $0.308 kWh, and $700 per year, respectively. The proposed template is suitable and adaptable to any desired grid size.","PeriodicalId":340494,"journal":{"name":"Journal of Engineering Research and Reports","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139148753","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}
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