Transactions Hong Kong Institution of Engineers最新文献_第8页

Repetitive Iteration CORDIC based Energy Efficient Image Compression for Portable Devices 基于重复迭代CORDIC的便携式设备节能图像压缩

Transactions Hong Kong Institution of Engineers Pub Date : 2019-05-25 DOI: 10.33430/V26N1THIE-2018-0027

Naveen Cheggoju, Neha Nawandar Kailash, Vishal Satpute Ramesh

引用次数: 0

Maximising the coverage of emergency medical services withtime-dependent demand restrictions: a case study in Shanghai 基于时效性需求限制的紧急医疗服务覆盖面最大化:以上海为例

Transactions Hong Kong Institution of Engineers Pub Date : 2019-05-25 DOI: 10.33430/V26N1THIE-2016-0029

Ming Li, Jia Wei Zhang

引用次数: 0

A BIM-based approach to automate the design and coordination process of mechanical, electrical, and plumbing systems 一种基于BIM的方法，用于自动化机械、电气和管道系统的设计和协调过程

Transactions Hong Kong Institution of Engineers Pub Date : 2018-10-02 DOI: 10.1080/1023697X.2018.1537813

Qiqi Lu, Y. Wong

{"title":"A BIM-based approach to automate the design and coordination process of mechanical, electrical, and plumbing systems","authors":"Qiqi Lu, Y. Wong","doi":"10.1080/1023697X.2018.1537813","DOIUrl":"https://doi.org/10.1080/1023697X.2018.1537813","url":null,"abstract":"ABSTRACT The design and spatial coordination of mechanical, electrical, plumbing, and fire protection systems (MEP) have become a major challenge for successful project delivery. Traditionally, MEP coordination has been conducted based on overlaying 2D drawings from different trades to detect functional and spatial interferences between MEP systems. Such coordination is time consuming and of low efficiency. Recently, the advent and development of Building Information Modelling (BIM) have significantly changed this process by affording a visual and collaborative manner. However, it still needs much manual work and many rounds of coordination as the conventional 2D design was still used. Therefore, this paper proposes a well-defined approach based on BIM to improve the workflow and automate the process by developing an MEP rule-based automated engine using Revit Application Programming Interface (API) tool. The engine is developed primarily to help analyse available ceiling zone for MEP elements in the first phase and then extended to facilitate rule-based routing in the second phase. The proposed approach is verified and validated by an illustrative example, followed by a real-life MEP design case. The result shows that with the help of the proposed approach, clashes and the number of coordination iteration are reduced substantially.","PeriodicalId":35587,"journal":{"name":"Transactions Hong Kong Institution of Engineers","volume":"25 1","pages":"273 - 280"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1023697X.2018.1537813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46363784","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: 6

Foreword 前言

Transactions Hong Kong Institution of Engineers Pub Date : 2018-10-02 DOI: 10.1080/1023697x.2018.1577946

Chan Tat Leung

引用次数: 0

Development of the digital model of the jewellery production process for resource optimisation and prediction 开发珠宝生产过程的数字模型，用于资源优化和预测

Transactions Hong Kong Institution of Engineers Pub Date : 2018-10-02 DOI: 10.1080/1023697X.2018.1535284

Fei Lin, M. C. Wong, Ming Ge

{"title":"Development of the digital model of the jewellery production process for resource optimisation and prediction","authors":"Fei Lin, M. C. Wong, Ming Ge","doi":"10.1080/1023697X.2018.1535284","DOIUrl":"https://doi.org/10.1080/1023697X.2018.1535284","url":null,"abstract":"ABSTRACT Smart manufacturing is becoming one of the core tendencies in manufacturing nowadays. In the conventional production process mode, the varieties in the production process, manpower processing time, and production scheduling lead to a big challenge in production process management. In order to keep pace with the rapid technology development and market demand diversification, digital and intelligent transformation became extremely essential for manufacturing industries. It is able to evaluate and manage the production process performance in a timely and scientific manner. With the digital model, the production efficiency can be improved and the resources management can be optimised based on the prediction. In this study, the traditional labour-intensive jewellery manufacturing is used and analysed to evaluate its digital model for the resource optimisation and prediction. By evaluating the production process by functional groups separately with the manpower level classification, the digital model could provide an automatic and efficient solution to its production process management system and logistic flow. It eliminates the unnecessary time-consuming working process and enhances the working process efficiency, which is capable of optimising the entire production efficiency as well as performing the resource prediction.","PeriodicalId":35587,"journal":{"name":"Transactions Hong Kong Institution of Engineers","volume":"25 1","pages":"229 - 236"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1023697X.2018.1535284","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46967198","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: 7

Development of outdoor pollution free zone by fan-assisted devices 利用风机辅助设备开发室外无公害区域

Transactions Hong Kong Institution of Engineers Pub Date : 2018-10-02 DOI: 10.1080/1023697X.2018.1535283

K. Chan, J. Tong

引用次数: 0

Novel engineering techniques to overcoming traditional challenges in online condition monitoring systems for power transformer 新的工程技术克服了电力变压器在线状态监测系统的传统挑战

Transactions Hong Kong Institution of Engineers Pub Date : 2018-10-02 DOI: 10.1080/1023697X.2018.1539348

J. Chow, Ray Lee, Eric Wong, Keith Leung, Gary Lai

引用次数: 5

Road safety attitudes, perceptions and behaviours of taxi drivers in Hong Kong 香港的士司机对道路安全的态度、认知及行为

Transactions Hong Kong Institution of Engineers Pub Date : 2018-10-02 DOI: 10.1080/1023697X.2018.1543033

Benson K. H. Hung

{"title":"Road safety attitudes, perceptions and behaviours of taxi drivers in Hong Kong","authors":"Benson K. H. Hung","doi":"10.1080/1023697X.2018.1543033","DOIUrl":"https://doi.org/10.1080/1023697X.2018.1543033","url":null,"abstract":"ABSTRACT By employing abbreviated versions of Driver Attitude Questionnaire (DAQ), Driver Risk Perception Questionnaire (DRPQ) and Driver Behaviour Questionnaire (DBQ), this study provides a profile of the self-reported attitudes, road safety perceptions and the extent of engagement in aberrant driving behaviours of a sample of taxi drivers (N = 135) and private car drivers (N = 134) to identify significant factors affecting the safety of the occupational drivers. The results show that taxi and private car drivers are more likely to report engaging in speeding violations, and believe speeding is more acceptable compared to the use of hand-held mobile device whilst driving, following too closely or overtaking. Regarding demographic factors, the results show that ownership, work mode and experience have significant influence on taxi drivers’ DAQ, DRPQ and DBQ reports. Bivariate analyses indicate that taxi drivers who report a higher level of aberrant driving behaviours also report less safe driving attitudes. However, an exception is found in factors related to speeding. The results show that taxi drivers who report high motivations for traffic violations also have higher chance to involve in violations. Furthermore, the research has identified a number of differences between taxi and private car drivers that may have an impact on the occupational drivers.","PeriodicalId":35587,"journal":{"name":"Transactions Hong Kong Institution of Engineers","volume":"25 1","pages":"255 - 272"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1023697X.2018.1543033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44697426","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: 4

Eco-friendly paving materials using waste PET and reclaimed asphalt pavement 使用废旧PET和再生沥青路面的环保铺装材料

Transactions Hong Kong Institution of Engineers Pub Date : 2018-10-02 DOI: 10.1080/1023697X.2018.1534617

A. Sreeram, Z. Leng, R. K. Padhan, Xin Qu

{"title":"Eco-friendly paving materials using waste PET and reclaimed asphalt pavement","authors":"A. Sreeram, Z. Leng, R. K. Padhan, Xin Qu","doi":"10.1080/1023697X.2018.1534617","DOIUrl":"https://doi.org/10.1080/1023697X.2018.1534617","url":null,"abstract":"ABSTRACT Waste polyethylene terephthalate (PET) and reclaimed asphalt pavement (RAP) represent two categories of waste materials that are currently enduring major recycling efforts around the world. This study proposes a method to incorporate PET-based additives into asphalt mixtures containing RAP. Waste PET was chemically treated using an aminolysis process to synthesise PET-based additives. The effect of the additives on asphalt binder was then characterised through molecular dynamic simulation (MDS) which indicated that the additives increase the intermolecular interaction within the asphalt binder molecules. Subsequently, binders modified with PET additives were used to prepare mixtures containing RAP at various percentages and tested through conventional rheological tests, such as Marshall Stability tests and Indirect Tensile Stiffness Modulus (ITSM) tests. Mixtures with 2% of PET additives and RAP showed improved stability and Marshall quotient values, demonstrating better resistance to permanent deformation. It was also observed that the PET additives have the substantial effect to reduce the ageing effect of mixtures containing RAP, thereby improving the longevity and service life of pavement mixtures. Overall, the results indicated that the usage of such PET derived additives can have a significant positive effect in improving the performance of asphalt mixtures containing RAP.","PeriodicalId":35587,"journal":{"name":"Transactions Hong Kong Institution of Engineers","volume":"25 1","pages":"237 - 247"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1023697X.2018.1534617","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44758843","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

Estimating the remaining life of airfield flexible pavements considering environmental factors 考虑环境因素的机场柔性路面剩余寿命估算

Transactions Hong Kong Institution of Engineers Pub Date : 2018-07-03 DOI: 10.1080/1023697X.2018.1499445

Hongduo Zhao, Lukuan Ma, Jiake Zhang

{"title":"Estimating the remaining life of airfield flexible pavements considering environmental factors","authors":"Hongduo Zhao, Lukuan Ma, Jiake Zhang","doi":"10.1080/1023697X.2018.1499445","DOIUrl":"https://doi.org/10.1080/1023697X.2018.1499445","url":null,"abstract":"Abstract The mechanistic-empirical analysis approach assumes a fixed environmental condition in estimating the remaining life of airfield flexible pavements, which may introduce some errors with the real situation. This paper investigated the influences of moisture and frost on resilient modulus of subgrade soil and unbound materials, as well as the influences of temperature on modulus and Poisson’s ratio of asphalt mixture. A time-sharing damage accumulation method, which considered the environmental factors in pavement damage calculation, was provided in this research. Based on the method, this paper proposed a methodology to predict the remaining life of in-service airfield flexible pavements, and a case study was conducted using this methodology. The result shows that environmental factors significantly affect the damage calculation of airfield flexible pavements. Besides, it has been found from the case study that the methodology is applicable for estimating the remaining life of airfield flexible pavements. The final result of the case also indicates that the methodology provides a relatively accurate result of the remaining life of in-service airfield flexible pavements.","PeriodicalId":35587,"journal":{"name":"Transactions Hong Kong Institution of Engineers","volume":"25 1","pages":"208 - 216"},"PeriodicalIF":0.0,"publicationDate":"2018-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1023697X.2018.1499445","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46416206","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