علاء سعيد محمد عبدالملك, خالد عبدالحليم حيدر, نبيل عبدالعليم
تدرس هذه الورقة الأسباب البشرية والطبيعية التي أدت إلى انهيار وتصدع المباني في محافظة عدن من خلال دراسة ميدانية في بعض مديريات عدن القديمة.
本文通过对亚丁省一些古老省份的实地研究，研究了亚丁省建筑物坍塌和断裂的人为和自然原因。
{"title":"تصدع المباني في مدينة عدن \"دراسة حالة ميدانية الأسباب و العلاج\"","authors":"علاء سعيد محمد عبدالملك, خالد عبدالحليم حيدر, نبيل عبدالعليم","doi":"10.20428/jst.v20i1.845","DOIUrl":"https://doi.org/10.20428/jst.v20i1.845","url":null,"abstract":"تدرس هذه الورقة الأسباب البشرية والطبيعية التي أدت إلى انهيار وتصدع المباني في محافظة عدن من خلال دراسة ميدانية في بعض مديريات عدن القديمة.","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79232410","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}
في ظل التطور الحاصل في مجال تكنولوجيا المعلومات و الثورة التقنية في وسائل الاتصال و الزيادة الهائلة في عدد الأجهزة المختلفة التي تستخدم عناوين برتوكول الانترنت (IP) مثل أجهزة (الحاسوب الشخصي,الحاسوب المحمول , الحاسوب اللوحي , الهواتف الذكية, و الأجهزة الذكية التي تتعامل مع IP ) لترتبط بالشبكة العالمية الانترنت, فإن عناوين برتوكول الانترنت الإصدار الرابع IPv4 لم تعد كافية لتلبية كافة احتياجات طالبي خدمة الانترنت حول العالم , و بالتالي فإن الانتقال إلى الإصدار السادس من برتوكول الانترنت IPv6 أصبح ضرورة ملحة خاصة في الجمهورية اليمنية التي تعاني من قلة العناوين العالمية في IPv4 , في هذه الورقة سيتم مناقشة برتوكول الانترنت IPv6 و ذكر أهم الميزات و الخدمات التي سيوفرها تطبيق عناوين IPv6 , كذلك مناقشة طرق الانتقال إلى IPv6 و المراحل التي لابد من تنفيذها حتى يتم تطبيق عناوين IPv6 , كما سيتم تنفيذ دراسة عملية بين تطبيق عناوين IPv4 وعناوين IPv6 على أجهزة الشبكة و تأثير ذلك على أداء وسلوك الشبكة و زمن الاستجابة عند استخدام تطبيقات مختلفة مثل ( تصفح الانترنت , و البريد الإلكتروني و نقل الملفات و الاتصال الصوتي والاتصال باستخدام الصوت و الصورة الفيديو ). و قد خلصت الدراسة إلى أن الانتقال إلى IPv6 في المؤسسات الكبيرة سيحسن من أداء الشبكة باستخدام التطبيقات المختلفة على الشبكة , باستثناء التأخير في استخدام تطبيقات الاتصال بالصوت و الصورة (Video) الناتج عن جودة الخدمة و أولويات تسليم حزم البيانات .
{"title":"في المؤسسات الكبيرة و دراسة تأثيره على أداء الشبكة IPv6 تطوير إطار عمل للانتقال إلى","authors":"ماجد عبدالله التويتي, محمد الشدادي","doi":"10.20428/jst.v20i1.846","DOIUrl":"https://doi.org/10.20428/jst.v20i1.846","url":null,"abstract":"في ظل التطور الحاصل في مجال تكنولوجيا المعلومات و الثورة التقنية في وسائل الاتصال و الزيادة الهائلة في عدد الأجهزة المختلفة التي تستخدم عناوين برتوكول الانترنت (IP) مثل أجهزة (الحاسوب الشخصي,الحاسوب المحمول , الحاسوب اللوحي , الهواتف الذكية, و الأجهزة الذكية التي تتعامل مع IP ) لترتبط بالشبكة العالمية الانترنت, فإن عناوين برتوكول الانترنت الإصدار الرابع IPv4 لم تعد كافية لتلبية كافة احتياجات طالبي خدمة الانترنت حول العالم , و بالتالي فإن الانتقال إلى الإصدار السادس من برتوكول الانترنت IPv6 أصبح ضرورة ملحة خاصة في الجمهورية اليمنية التي تعاني من قلة العناوين العالمية في IPv4 , في هذه الورقة سيتم مناقشة برتوكول الانترنت IPv6 و ذكر أهم الميزات و الخدمات التي سيوفرها تطبيق عناوين IPv6 , كذلك مناقشة طرق الانتقال إلى IPv6 و المراحل التي لابد من تنفيذها حتى يتم تطبيق عناوين IPv6 , كما سيتم تنفيذ دراسة عملية بين تطبيق عناوين IPv4 وعناوين IPv6 على أجهزة الشبكة و تأثير ذلك على أداء وسلوك الشبكة و زمن الاستجابة عند استخدام تطبيقات مختلفة مثل ( تصفح الانترنت , و البريد الإلكتروني و نقل الملفات و الاتصال الصوتي والاتصال باستخدام الصوت و الصورة الفيديو ). و قد خلصت الدراسة إلى أن الانتقال إلى IPv6 في المؤسسات الكبيرة سيحسن من أداء الشبكة باستخدام التطبيقات المختلفة على الشبكة , باستثناء التأخير في استخدام تطبيقات الاتصال بالصوت و الصورة (Video) الناتج عن جودة الخدمة و أولويات تسليم حزم البيانات .","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88575952","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}
Many children and animals had died from Vehicular Heatstroke every year. According to the “Not Heatstroke organization,” 882 children have died due to pediatric Vehicular Heatstroke since 1998 in just in the US. Vehicle manufacturers have not given this tragic problem the needed attention despite the massive development of the technology of vehicles. Nowadays, the technology of vehicles has been improved by different types of systems such as Anti-Lock Brakes, Electronic Stability Control, Adaptive cruise control, Lane-departure warning system, and Self-parking which assist and protect the driver's life during the trip. In this paper, a comparison between this system and other vehicular heatstroke detection systems will be executed. An automatic vehicular heatstroke detection system will be designed based on an Infrared Array Sensor. This system will detect any child inside the vehicle by using the Infrared Array Sensor “Grid EYE” as soon as the driver leaves the vehicle. After that, the system will activate the light and horn of the vehicle as an alarm. And then, the system will send an SMS to the driver by GSM signal. Finally, the system will send a signal to turn the air condition on only in case there is no response from the driver.
{"title":"Automatic Detection System for Vehicular Heatstroke Prevention","authors":"Ahmed Al-Areqi, Ahmed Al-Marebi","doi":"10.20428/jst.26.2.1","DOIUrl":"https://doi.org/10.20428/jst.26.2.1","url":null,"abstract":"Many children and animals had died from Vehicular Heatstroke every year. According to the “Not Heatstroke organization,” 882 children have died due to pediatric Vehicular Heatstroke since 1998 in just in the US. Vehicle manufacturers have not given this tragic problem the needed attention despite the massive development of the technology of vehicles. Nowadays, the technology of vehicles has been improved by different types of systems such as Anti-Lock Brakes, Electronic Stability Control, Adaptive cruise control, Lane-departure warning system, and Self-parking which assist and protect the driver's life during the trip. In this paper, a comparison between this system and other vehicular heatstroke detection systems will be executed. An automatic vehicular heatstroke detection system will be designed based on an Infrared Array Sensor. This system will detect any child inside the vehicle by using the Infrared Array Sensor “Grid EYE” as soon as the driver leaves the vehicle. After that, the system will activate the light and horn of the vehicle as an alarm. And then, the system will send an SMS to the driver by GSM signal. Finally, the system will send a signal to turn the air condition on only in case there is no response from the driver.","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86946695","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}
م/ معاذ يحيى حمود الكحيل, أ.د/ حمود احمد احمد الظفيري, د/ طارق عبد الله حسين بركات, د/ عبد الوهاب مجاهد حسن العنسي
تواجه صناعة التشييد في اليمن عدد من العقبات أبرزها سوء الإدارة، ولذلك هدفت هذه الدراسة إلى تقييم الأداء في الإشراف على مشاريع التشييد الممولة دولياً ومعرفة مكامن القصور في أداء الجهات الاستشارية المحلية. حيث يعتبر ذلك الخطوة الاولى من أجل تحسين مستوى الأداء في إدارة المشاريع والإسهام بشكل فعال في بناء وتطوير البنية التحتية وازدهار صناعة التشييد في اليمن. تم استخدام المنهج الوصفي التحليلي من خلال مراجعة شاملة للأدبيات تلتها دراسة ميدانية باستخدام استبيان تم تصميمة وتوزيعه على الجهات الاستشارية اليمنية ذات الصلة. وتوصلت الدراسة إلى أن مستوى أداء الجهات الاستشارية بشكل عام متوسط وأن عمليات إدارة التكلفة تعتبر الأكثر تأثيراً على مستوى أداء الجهات الاستشارية في الإشراف على مشاريع التشييد الممولة دولياً ويليها عمليات إدارة التكامل والنطاق ثم عمليات إدارة الجودة بينما كانت عمليات إدارة الجدول الزمني الأقل من حيث التأثير. وفي النهاية فإن عملية تقييم الأداء تعتبر الخطوة الأهم في سبيل تحسين أداء الجهات الاستشارية المحلية ودعم فريق المشروع في التغلب على المشاكل التي تواجه إدارة مشاريع التشييد في اليمن. وقد اقتصرت الدراسة على تقييم أداء الجهات الاستشارية. ويمكن أن تتناول الدراسات المستقبلية شركات المقاولات لدراسة الفروق في الأداء. وأوصى الباحثون بمواصلة الخطوات التي من شأنها المساهمة في تحسين أداء الجهات الاستشارية المحلية مثل تطوير منهجية عمل والتطوير الإبداعي لمقاييس نجاح المشروع.
{"title":"تقييم أداء الجهات الاستشارية المحلية في الإشراف على تنفيذ المشاريع الممولة دولياً في الجمهورية اليمنية","authors":"م/ معاذ يحيى حمود الكحيل, أ.د/ حمود احمد احمد الظفيري, د/ طارق عبد الله حسين بركات, د/ عبد الوهاب مجاهد حسن العنسي","doi":"10.20428/jst.26.2.3","DOIUrl":"https://doi.org/10.20428/jst.26.2.3","url":null,"abstract":"تواجه صناعة التشييد في اليمن عدد من العقبات أبرزها سوء الإدارة، ولذلك هدفت هذه الدراسة إلى تقييم الأداء في الإشراف على مشاريع التشييد الممولة دولياً ومعرفة مكامن القصور في أداء الجهات الاستشارية المحلية. حيث يعتبر ذلك الخطوة الاولى من أجل تحسين مستوى الأداء في إدارة المشاريع والإسهام بشكل فعال في بناء وتطوير البنية التحتية وازدهار صناعة التشييد في اليمن. تم استخدام المنهج الوصفي التحليلي من خلال مراجعة شاملة للأدبيات تلتها دراسة ميدانية باستخدام استبيان تم تصميمة وتوزيعه على الجهات الاستشارية اليمنية ذات الصلة. وتوصلت الدراسة إلى أن مستوى أداء الجهات الاستشارية بشكل عام متوسط وأن عمليات إدارة التكلفة تعتبر الأكثر تأثيراً على مستوى أداء الجهات الاستشارية في الإشراف على مشاريع التشييد الممولة دولياً ويليها عمليات إدارة التكامل والنطاق ثم عمليات إدارة الجودة بينما كانت عمليات إدارة الجدول الزمني الأقل من حيث التأثير. وفي النهاية فإن عملية تقييم الأداء تعتبر الخطوة الأهم في سبيل تحسين أداء الجهات الاستشارية المحلية ودعم فريق المشروع في التغلب على المشاكل التي تواجه إدارة مشاريع التشييد في اليمن. وقد اقتصرت الدراسة على تقييم أداء الجهات الاستشارية. ويمكن أن تتناول الدراسات المستقبلية شركات المقاولات لدراسة الفروق في الأداء. وأوصى الباحثون بمواصلة الخطوات التي من شأنها المساهمة في تحسين أداء الجهات الاستشارية المحلية مثل تطوير منهجية عمل والتطوير الإبداعي لمقاييس نجاح المشروع.","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82287064","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}
This study considered an important component of the Urban Fabric of which play major role in social and economic aspects of the people in cities, districts, villages, and neighborhoods. Since the exist of historical cities, and its open urban space, have a distinctive activity within through all the urban fabric of any city. According to urban design, some elements such as hierarchy, enclosure, form and space and its surrounding, good conditions of these elements giving values to the over all of the district and neighborhoods images in which reflect to the image of the city in general. This will help a lot and create the interrelation of socio-economic aspect, using open space in positive ways will increase the effectiveness of social and economic activities with the city and versa vars. The site survey and investigation and analysis various areas been selected (districts) found lack of understanding the role of open space, and lack of consideration of its importance to the social and economic activities aspects, also found neglected as important part of the urban land use due to many negative practicing in the actual implementation of the structure and detail plan of the study area of the city. The study builds theoretical framework based on the literature in order to understand and measure the compatibility of the actual conditions in relation to urban design theories and technical performance, the study conclude the real facts that all open spaces have no real consideration to open urban space order to improve areas within the city as a whole mainly in relation to socio-economic aspects, the study conclude that no real consideration to improve open urban space in order to improve areas within the city, also must of open space found either used by public mini bus parking, squires of commercial open market, as well as squatters and slums by homeless people. Therefore, study recommended, redevelopment, and reconstruct, rehabilitate and repair the open spaces in urban areas which improve all the overall urban spaces in the city through districts, and neighborhoods.
{"title":"Open Urban Space in Districts / Neighborhoods: The Importance of the Socio-Economic Aspect and Civilization Continuity in Areas out of the Old City: Sana’a City as a Case Study","authors":"د. أمال عبد الكريم عبد الله العرشي","doi":"10.20428/jst.26.2.2","DOIUrl":"https://doi.org/10.20428/jst.26.2.2","url":null,"abstract":"This study considered an important component of the Urban Fabric of which play major role in social and economic aspects of the people in cities, districts, villages, and neighborhoods. Since the exist of historical cities, and its open urban space, have a distinctive activity within through all the urban fabric of any city. According to urban design, some elements such as hierarchy, enclosure, form and space and its surrounding, good conditions of these elements giving values to the over all of the district and neighborhoods images in which reflect to the image of the city in general. This will help a lot and create the interrelation of socio-economic aspect, using open space in positive ways will increase the effectiveness of social and economic activities with the city and versa vars. The site survey and investigation and analysis various areas been selected (districts) found lack of understanding the role of open space, and lack of consideration of its importance to the social and economic activities aspects, also found neglected as important part of the urban land use due to many negative practicing in the actual implementation of the structure and detail plan of the study area of the city. The study builds theoretical framework based on the literature in order to understand and measure the compatibility of the actual conditions in relation to urban design theories and technical performance, the study conclude the real facts that all open spaces have no real consideration to open urban space order to improve areas within the city as a whole mainly in relation to socio-economic aspects, the study conclude that no real consideration to improve open urban space in order to improve areas within the city, also must of open space found either used by public mini bus parking, squires of commercial open market, as well as squatters and slums by homeless people. Therefore, study recommended, redevelopment, and reconstruct, rehabilitate and repair the open spaces in urban areas which improve all the overall urban spaces in the city through districts, and neighborhoods.","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81511423","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}
The progressive collapse of structures has been the concern of many studies. Efforts have been made to develop methodologies of analysis and design for the mitigation of progressive collapse. As precast structures lack of structural continuity in the load paths, they are more responsive to progressive collapse than the cast-in-situ monolithic reinforced concrete (RC) buildings. In this paper, Analytical study has been conducted to develop a nonlinear finite element FE model using ABAQUS 6.12 software to investigate the behavior of precast non-prestressed reinforced concrete beam-column connection in case of sudden column removal. The FE model consider the nonlinear behavior of concrete and steel. In addition, it takes into account the contact properties between surfaces at joints. A calibration was performed between the numerical and the experimental results, using three half-scale specimens tested under mid column lose, to verify that the FE model could be used for simulating precast beam column connections. There was a good agreement between experimental and numerical results.
{"title":"Numerical Investigation of Beam-Column Connections in Precast Concrete Buildings","authors":"Ziyad Al-Gaboby, Safwan Al-Sumaini","doi":"10.20428/jst.26.1.1","DOIUrl":"https://doi.org/10.20428/jst.26.1.1","url":null,"abstract":"The progressive collapse of structures has been the concern of many studies. Efforts have been made to develop methodologies of analysis and design for the mitigation of progressive collapse. As precast structures lack of structural continuity in the load paths, they are more responsive to progressive collapse than the cast-in-situ monolithic reinforced concrete (RC) buildings. In this paper, Analytical study has been conducted to develop a nonlinear finite element FE model using ABAQUS 6.12 software to investigate the behavior of precast non-prestressed reinforced concrete beam-column connection in case of sudden column removal. The FE model consider the nonlinear behavior of concrete and steel. In addition, it takes into account the contact properties between surfaces at joints. A calibration was performed between the numerical and the experimental results, using three half-scale specimens tested under mid column lose, to verify that the FE model could be used for simulating precast beam column connections. There was a good agreement between experimental and numerical results.","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90086087","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}
Ziyad Al-Gaboby, Emad AH Al-Wesabi, Ibrahim M. H. Al-Shaikh
The results of a numerical study on the fire resistance of the joint between the steel beams, as well as the concrete-filled steel tube column (CFSTC) are provided utilizing the ABAQUS program. The analytical approach has been implemented, which comprises three steps of the sequential analysis, including fire analysis and heat transfer analysis, in addition to stress analysis for predicting the joint’s behavior under a fire loading. They include models of the nonlinear 3D finite element of heat transfer, together with stress analysis. These illustrative models were validated by conducting a comparison between the data of the numerical output with the current experimental results in the literature. This test involves the reverse channel test, i.e., the joint’s test against a fire. The conducted test is among different tests of fire; 10 tests that are available in the literature. The results showed good agreement when the numerical results were compared to the experimental results. Consequently, the models of the finite element can predict the joint’s behavior under a fire loading.
{"title":"The Behavior of Joint Between Steel Beam and Concrete-Filled Steel Tube Column Under Fire","authors":"Ziyad Al-Gaboby, Emad AH Al-Wesabi, Ibrahim M. H. Al-Shaikh","doi":"10.20428/jst.26.1.2","DOIUrl":"https://doi.org/10.20428/jst.26.1.2","url":null,"abstract":"The results of a numerical study on the fire resistance of the joint between the steel beams, as well as the concrete-filled steel tube column (CFSTC) are provided utilizing the ABAQUS program. The analytical approach has been implemented, which comprises three steps of the sequential analysis, including fire analysis and heat transfer analysis, in addition to stress analysis for predicting the joint’s behavior under a fire loading. They include models of the nonlinear 3D finite element of heat transfer, together with stress analysis. These illustrative models were validated by conducting a comparison between the data of the numerical output with the current experimental results in the literature. This test involves the reverse channel test, i.e., the joint’s test against a fire. The conducted test is among different tests of fire; 10 tests that are available in the literature. The results showed good agreement when the numerical results were compared to the experimental results. Consequently, the models of the finite element can predict the joint’s behavior under a fire loading.","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74536539","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}
تطور النظام الإنشائي في العمارة التقليدية بصنعاء تطوراً كبيراً عبر سلسلة من التجارب الموقعية لمجموعة أجيال متعاقبة توارثت فن البناء خلال آلاف السنين، وهو ما مكن البناءين التقليديين من الوصول إلى المباني البرجية آنذاك والتي تصل إلى 9 طوابق. وقد أجريت العديد من الدراسات والأبحاث لمعرفة كيف تم تطويع مواد البناء التقليدية بتقنيات بسيطة للوصول إلى المباني البرجية. ولكن المتأمل في النظام الإنشائي لبعض الأبنية السكنية التقليدية يلاحظ وجود ظاهرة نادرة وفريدة وهي إمكانية تعليق الجدران الحاملة في الأدوار الوسطى أو العليا، إلا أن تلك الظاهرة الفريدة لم تحظَ بالدراسة والاهتمام من قبل الباحثين والمهتمين بالعمارة التقليدية وهي مشكلة البحث لذلك يهدف هذا البحث إلى دراسة وتحليل الجدران الحاملة المعلقة في الأبنية السكنية بصنعاء القديمة بأسلوب علمي ومنهجي، لمعرفة كيف تم توظيف المواد التقليدية بتقنيات بسيطة والوصول إلى تعليق الجدران الحاملة ولتحقيق ذلك الهدف فقد تم تقسيم البحث إلى محورين رئيسين تسلسلا لتحقيق هدفه. بحيث خُصص المحور الأول من البحث (الإطار النظري): للتعريف بالمشكلة البحثية وطرح إطار نظري لها. بينما خُصص المحور الثاني (الدراسة الميدانية): لدراسة الجدران الحاملة المعلقة في الأبنية السكنية بصنعاء القديمة وتحليلها وتوفير المعلومات الكافية عنها. وتأتي أهمية البحث من كونه إضافة علمية للتعريف بنظام الجدران الحاملة المعلقة وخصائصها في الأبنية السكنية. وقد خلُص البحث إلى الوصول للأساسيات والشروط التي مكنت البناءين التقليديين من تعليق الجدران الحاملة في الأبنية السكنية البرجية بصنعاء.
{"title":"نظام الجدران الحاملة المعلقة في الأبنية السكنية بصنعاء القديمة","authors":"د. علي صالح الغزالي","doi":"10.20428/jst.26.1.3","DOIUrl":"https://doi.org/10.20428/jst.26.1.3","url":null,"abstract":"تطور النظام الإنشائي في العمارة التقليدية بصنعاء تطوراً كبيراً عبر سلسلة من التجارب الموقعية لمجموعة أجيال متعاقبة توارثت فن البناء خلال آلاف السنين، وهو ما مكن البناءين التقليديين من الوصول إلى المباني البرجية آنذاك والتي تصل إلى 9 طوابق. وقد أجريت العديد من الدراسات والأبحاث لمعرفة كيف تم تطويع مواد البناء التقليدية بتقنيات بسيطة للوصول إلى المباني البرجية. ولكن المتأمل في النظام الإنشائي لبعض الأبنية السكنية التقليدية يلاحظ وجود ظاهرة نادرة وفريدة وهي إمكانية تعليق الجدران الحاملة في الأدوار الوسطى أو العليا، إلا أن تلك الظاهرة الفريدة لم تحظَ بالدراسة والاهتمام من قبل الباحثين والمهتمين بالعمارة التقليدية وهي مشكلة البحث لذلك يهدف هذا البحث إلى دراسة وتحليل الجدران الحاملة المعلقة في الأبنية السكنية بصنعاء القديمة بأسلوب علمي ومنهجي، لمعرفة كيف تم توظيف المواد التقليدية بتقنيات بسيطة والوصول إلى تعليق الجدران الحاملة ولتحقيق ذلك الهدف فقد تم تقسيم البحث إلى محورين رئيسين تسلسلا لتحقيق هدفه. بحيث خُصص المحور الأول من البحث (الإطار النظري): للتعريف بالمشكلة البحثية وطرح إطار نظري لها. بينما خُصص المحور الثاني (الدراسة الميدانية): لدراسة الجدران الحاملة المعلقة في الأبنية السكنية بصنعاء القديمة وتحليلها وتوفير المعلومات الكافية عنها. وتأتي أهمية البحث من كونه إضافة علمية للتعريف بنظام الجدران الحاملة المعلقة وخصائصها في الأبنية السكنية. وقد خلُص البحث إلى الوصول للأساسيات والشروط التي مكنت البناءين التقليديين من تعليق الجدران الحاملة في الأبنية السكنية البرجية بصنعاء.","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80443114","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}
LoRa (Long Range Radio) là công nghệ không dây truyền dữ liệu tầm xa, tiêu thụ nănglượng thấp cho các ứng dụng M2M và IoT. Nhóm tác giả đã thiết kế và thực hiện cổngchuyển đổi (Gateway) LoRa– GSM (Global System for Mobile Communications) tíchhợp màn hình cảm ứng HMI (Human Machine Interface), để giao tiếp với người vậnhành thay thế cho một máy chủ LoRa. Cổng chuyển đổi sàng lọc và đưa dữ liệu lênmáy chủ IoT thông qua mạng di động GPRS/3G/4G tương thích với mọi địa hình khácnhau. Nút LoRa sử dụng cảm biến không dây dùng pin tiết kiệm năng lượng, đồng bộvới cổng chuyển đổi. Sản phẩm LoRa 433MHz đã được thử nghiệm ở hai vùng địahình: đô thị và nông thôn. Kết quả cho thấy cổng chuyển đổi đảm bảo yêu cầu kiểmsoát và truyền dữ liệu đạt độ tin cậy cao và ra quyết định điều khiển ổn định; có thểđược sử dụng trong công nghiệp, quan trắc môi trường nông nghiệp và y tế.
{"title":"Thiết kế và thực hiện cổng chuyển đổi LoRa - GSM giám sát các nút dựa trên công nghệ LoRa","authors":"Hồ A Lil, Bùi Vũ Minh","doi":"10.55401/jst.v0i15.266","DOIUrl":"https://doi.org/10.55401/jst.v0i15.266","url":null,"abstract":"LoRa (Long Range Radio) là công nghệ không dây truyền dữ liệu tầm xa, tiêu thụ nănglượng thấp cho các ứng dụng M2M và IoT. Nhóm tác giả đã thiết kế và thực hiện cổngchuyển đổi (Gateway) LoRa– GSM (Global System for Mobile Communications) tíchhợp màn hình cảm ứng HMI (Human Machine Interface), để giao tiếp với người vậnhành thay thế cho một máy chủ LoRa. Cổng chuyển đổi sàng lọc và đưa dữ liệu lênmáy chủ IoT thông qua mạng di động GPRS/3G/4G tương thích với mọi địa hình khácnhau. Nút LoRa sử dụng cảm biến không dây dùng pin tiết kiệm năng lượng, đồng bộvới cổng chuyển đổi. Sản phẩm LoRa 433MHz đã được thử nghiệm ở hai vùng địahình: đô thị và nông thôn. Kết quả cho thấy cổng chuyển đổi đảm bảo yêu cầu kiểmsoát và truyền dữ liệu đạt độ tin cậy cao và ra quyết định điều khiển ổn định; có thểđược sử dụng trong công nghiệp, quan trắc môi trường nông nghiệp và y tế.","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76679955","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 : 2021-12-02DOI: 10.30880/jst.2021.13.02.006
Z. Iklima, T. M. Kadarina
Internet of Robotic Things (IoRT) distributes heterogeneous intelligences among devices and platforms. A distributed control of a three-degree-of-freedom (3-DOF) robot manipulator is integrated with web-based 3D visualization. An asynchronous protocol was utilized to broadcast kinematic data of a 3-DOF robot manipulator between platforms. However, kinematic data computed using inverse kinematic equations directly cannot identify the singularity issue of robot manipulator. Singularity avoidance required to prevent robot component or joint from damage. Therefore, this study proposed a deep neural network approach as a classification-based of manipulator robot path planning to avoid singularity issues. Deep neural network (DNN) was trained in 12 minutes, 52 seconds in 500 iterations. Training accuracy measured with value 96,23 percent, validation accuracy measured with value 96,13 percent, and testing accuracy measured with value 96,48 percent Additionally, 3 DOF manipulator robot web-based 3D visualization was made using Web Graphics Library (WebGL). The distributed platform was tested successfully and can distribute and classify 2352 motions per second.
{"title":"Distributed Path Planning Classification with Web-based 3D Visualization using Deep Neural Network for Internet of Robotic Things","authors":"Z. Iklima, T. M. Kadarina","doi":"10.30880/jst.2021.13.02.006","DOIUrl":"https://doi.org/10.30880/jst.2021.13.02.006","url":null,"abstract":"Internet of Robotic Things (IoRT) distributes heterogeneous intelligences among devices and platforms. A distributed control of a three-degree-of-freedom (3-DOF) robot manipulator is integrated with web-based 3D visualization. An asynchronous protocol was utilized to broadcast kinematic data of a 3-DOF robot manipulator between platforms. However, kinematic data computed using inverse kinematic equations directly cannot identify the singularity issue of robot manipulator. Singularity avoidance required to prevent robot component or joint from damage. Therefore, this study proposed a deep neural network approach as a classification-based of manipulator robot path planning to avoid singularity issues. Deep neural network (DNN) was trained in 12 minutes, 52 seconds in 500 iterations. Training accuracy measured with value 96,23 percent, validation accuracy measured with value 96,13 percent, and testing accuracy measured with value 96,48 percent Additionally, 3 DOF manipulator robot web-based 3D visualization was made using Web Graphics Library (WebGL). The distributed platform was tested successfully and can distribute and classify 2352 motions per second.","PeriodicalId":21913,"journal":{"name":"Songklanakarin Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89457946","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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