Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020)最新文献_第2页

OPTIMISATION OF THE SUPERCRITICAL FLUID EXTRACTION OF VETIVER ROOTS 香根草根超临界流体提取工艺的优化

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/cpto5829

S. Maharaj, M. Watson, D. Mcgaw, S. Thomas, Shivani Sonilal

{"title":"OPTIMISATION OF THE SUPERCRITICAL FLUID EXTRACTION OF VETIVER ROOTS","authors":"S. Maharaj, M. Watson, D. Mcgaw, S. Thomas, Shivani Sonilal","doi":"10.47412/cpto5829","DOIUrl":"https://doi.org/10.47412/cpto5829","url":null,"abstract":": The market projections for growth in both the essential and oleoresins market demonstrate a unique opportunity for Trinidad and Tobago to enter the business. Since an established bay tree plantation in Tobago cannot provide the raw material to operate a natural extracts plant for an entire year, the operation could be supplemented by the production of vetiver oil using vetiver roots that are grown and supplied by Tobago farmers. The chosen extraction technique is Supercritical Fluid Extraction (SFE) using carbon dioxide solvent since SFE was found to be more efficient and versatile than the traditional technique of Steam Distillation Extraction (SDE). To determine the optimum process conditions, a laboratory scale SFE programme was implemented using indigenous vetiver roots. The interactive effects of the operating parameters of pressures, temperatures and flowrates with respect to the oil yield were ascertained using Design of Experiments (DOE) which entailed the execution of 11 experimental runs. An ANOVA test produced an R 2 value 0.9864 and the optimum conditions were found to be – 220 Bar at 50 o C at an exit CO 2 flow rate of 2ml/min. The yield at this optimum condition was 4.75 wt. % which was considerably higher than yields reported in the literature. An initial evaluation of the economic viability of the project indicated an IRR of 28%, making the project well worthy of further development towards potential commercialisation.","PeriodicalId":206492,"journal":{"name":"Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020)","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114772091","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

EVALUATING THE EFFECTIVENESS OF THE JOB HAZARD ANALYSIS AND RISK ASSESSMENT REPORTS FOR BUILDING SERVICES INSTALLATION 评估建筑设备安装工作危害分析和风险评估报告的有效性

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/cdoq2845

Gino Hosein, I. Ray

{"title":"EVALUATING THE EFFECTIVENESS OF THE JOB HAZARD ANALYSIS AND RISK ASSESSMENT REPORTS FOR BUILDING SERVICES INSTALLATION","authors":"Gino Hosein, I. Ray","doi":"10.47412/cdoq2845","DOIUrl":"https://doi.org/10.47412/cdoq2845","url":null,"abstract":": Excavating and backfilling trenches along the roadway to accommodate the installation of building services are common to the local industry. These services include electricity, water, telecommunications and data. The job hazard analysis (JHA) and risk assessment (RA) documents are typical forms prepared before the execution of these works to ensure health and safety. However, due to the hazards associated with the works, there are cost impacts which almost always affect the labour, materials and equipment resources. The main reasons for these are scope creep and the unforeseen nature of what to expect when breaking ground. This results in either the client or the contractor absorbing the additional unforeseen expenditure. The purpose of this research is to improve the efficiency of preparing and administering JHA and RA documents to help reduce unforeseen expenditures. This includes identifying and analysing all typical hazards and risks associated with labour, materials and equipment and the respective potential cost impacts. The data was collected by means of a population survey and validation of the results was achieved by means of a case study analysis of typical projects. The results revealed the main hazards associated with JHA and RA. It also identified some of the barriers to implementation such as lack of specific training, the need for more academic research, the use of more technology and for regulatory authorities to be more proactive. It was recommended that further research into this topic be done.","PeriodicalId":206492,"journal":{"name":"Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114904515","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

GOODNESS OF FIT OF PROBABILISTIC MODELS FOR ELECTRIC VEHICLE CHARGING BEHAVIOUR 电动汽车充电行为概率模型的拟合优度

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/qzwp9167

L. Addison, Govinda Hosein, S. Bahadoorsingh

{"title":"GOODNESS OF FIT OF PROBABILISTIC MODELS FOR ELECTRIC VEHICLE CHARGING BEHAVIOUR","authors":"L. Addison, Govinda Hosein, S. Bahadoorsingh","doi":"10.47412/qzwp9167","DOIUrl":"https://doi.org/10.47412/qzwp9167","url":null,"abstract":"Electric vehicles (EVs) have a number of environmental benefits in an era where fossil fuels have dominated. As such, the upgrade of electricity distribution grids to suit the needs of the modern world where the use of EVs can be accommodated is essential. Management of EV penetration is necessary, since uncoordinated charging can produce load imbalances and sharp variations in current, voltages and power. In order to assess the needs of such a system, estimates of random variables reflecting charging behaviour are necessary, particularly in cases where real data is insufficient. An attempt is made to assess some probabilistic models based on weekday load curves derived from the charging process. Level 1 EV charging profiles for uncoordinated charging schemes over one year for a data set consisting of 348 vehicles corresponding to 200 households are analysed and compared. Charging characteristics are reviewed and probability models are validated by goodness of fit statistics. Probability distribution functions (PDFs) which provide the best fit for these weekday load profiles are identified among the Johnson SB, Generalised Gamma and Dagum functions. This can provide an insight into estimation of PDFs based on EV charging behaviours, in order to build and assess models associated with transportation mobility data in other regions.","PeriodicalId":206492,"journal":{"name":"Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020)","volume":"223 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116041914","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

MITIGATING CONTRACTOR PROBLEMS EXPERIENCED IN THE CONSTRUCTION INDUSTRY OF TRINIDAD & TOBAGO 减轻特立尼达和多巴哥建筑业承包商遇到的问题

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/cekp4197

D. Outridge, Roshan Patel

{"title":"MITIGATING CONTRACTOR PROBLEMS EXPERIENCED IN THE CONSTRUCTION INDUSTRY OF TRINIDAD & TOBAGO","authors":"D. Outridge, Roshan Patel","doi":"10.47412/cekp4197","DOIUrl":"https://doi.org/10.47412/cekp4197","url":null,"abstract":"The construction industry of Trinidad and Tobago has been, for decades, a direct indicator of national development and contributor to economic growth. The associated problems of the industry as experienced by contractors negatively impacts project performance and success. This study identified the most common problems experienced by contractors and assessed these to determine their level of significance and importance to projects. Employing a survey questionnaire and analytical methods using the Statistical Package for the Social Sciences (SPSS), 43 problems were identified, classified into seven (7) factor groups: Financial, Managerial, Environmental, Labour Based, Resource Based Owner Based and Project Based that were ranked on their level of significance and importance. The top ten (10) problems were found to be delay of payments, design, scope and material changes, working in high risk areas, lack of feasibility and brief, corruption, lack of contractor’s experience, bureaucracy, geological problems, contractor’s finances and cash flow. These problems represent the Financial, Managerial, Environmental, Project Based and Owner Based factor groups with financial factors being the highest rated group of adverse effect and significance. Highlighting the findings of this study, the preferred solution to mitigate against the adverse impact indicative of the construction problems experienced were presented. These solutions can be implemented to reduce the adverse effects on projects, promoting sustainable construction practices in the construction industry of Trinidad & Tobago.","PeriodicalId":206492,"journal":{"name":"Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121097102","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

ON THE FORCHHEIMER COEFFICIENTS FOR UNSATURATED FLOWS 非饱和流动的forchheimer系数

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/dmdg4407

A. Ali, D. Villarroel-Lamb

引用次数: 0

TRANSPORTATION SUSTAINABILITY FRAMEWORK 交通可持续性框架

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/cvab8251

Kohan Dolcy, T. Townsend

引用次数: 0

UNSTEADY HYDROMAGNETIC COUETTE FLOW UNDER AN OSCILLATING PRESSURE GRADIENT AND UNIFORM SUCTION AND INJECTION 振荡压力梯度和均匀吸注条件下的非定常磁库埃特流

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/jclz2920

Jennilee Veronique, S. Gunakala, V. Job

引用次数: 0

EXPERIENCES OF USING A SINGLE ASSESSMENT FOR BOTH PRACTICAL PROTOTYPING SKILLS AND INTRODUCTION TO ENERGY ENGINEERING 对实际的原型技术和能源工程入门使用单一评估的经验

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/ziai9517

Jorrel Bisnath, Aneil Ramkhalawan, E. Cumberbatch, P. Persad, Aatma Maharajh, Natalie Persadie, Ronnie Bickramdass, Dinesh Soodeen

{"title":"EXPERIENCES OF USING A SINGLE ASSESSMENT FOR BOTH PRACTICAL PROTOTYPING SKILLS AND INTRODUCTION TO ENERGY ENGINEERING","authors":"Jorrel Bisnath, Aneil Ramkhalawan, E. Cumberbatch, P. Persad, Aatma Maharajh, Natalie Persadie, Ronnie Bickramdass, Dinesh Soodeen","doi":"10.47412/ziai9517","DOIUrl":"https://doi.org/10.47412/ziai9517","url":null,"abstract":"Engineering students are often faced with many assessment points during a semester. One of the more common assessments in an engineering programme are group-based, design and build projects. These projects often require a disproportionate amount of time due to coordination between members and resources for acquiring materials. This study relates an attempt to reduce this burden by utilising a common project as an assessment point for two separate courses: Practical Prototyping Skills and Introduction to Energy Engineering. The challenges faced by instructors in creating a project that would adequately address their individual learning outcomes are presented, along with the students’ perspective on this approach. Student surveys indicated that there was a clear understanding of how the project related to both courses and that they had sufficient support for the project, while lecturers highlighted several positive outcomes such as more student emphasis on the project, a higher standard of project and collegial support in the design and administration of the project.","PeriodicalId":206492,"journal":{"name":"Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121724539","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

PAVENERGY RESEARCH PROJECT – RESULTS ALREADY ACHIEVED AND NEW DEVELOPMENTS PLANNED FOR THE YEARS TO COME 光实能源研究项目——已经取得成果，并计划在未来几年进行新的发展

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/gsfy3058

Adelino Ferreira

引用次数: 0

MACHINE LEARNING TECHNIQUES FOR THE DETECTION OF UNFAIR PRICING IN SUPERMARKETS ACROSS TRINIDAD AND TOBAGO 用于检测特立尼达和多巴哥超市不公平定价的机器学习技术

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) Pub Date : 1900-01-01 DOI: 10.47412/gids9258

A. Ramdhanie

{"title":"MACHINE LEARNING TECHNIQUES FOR THE DETECTION OF UNFAIR PRICING IN SUPERMARKETS ACROSS TRINIDAD AND TOBAGO","authors":"A. Ramdhanie","doi":"10.47412/gids9258","DOIUrl":"https://doi.org/10.47412/gids9258","url":null,"abstract":"The tracking of prices in monitored supermarkets across Trinidad and Tobago is done by the Ministry of Trade and Industry. This initiative involves data collection every month for 118 grocery items (“standard basket”). The task of identifying which supermarkets are non-conforming in their pricing schemes is linked to the “total basket price” (total cost of the 118 items). An outlier is defined as any datapoint that varies significantly from all other observations in a dataset. In this paper, it is any supermarket that exceeds this total basket price by 5%. The aim of this research was twofold, with the first goal being to employ feature selection methods to reduce the number of items being collected. The second goal was to create a logistic regression learning model that can identify whether supermarkets are non-conforming, given their pricing information. The dataset contained 692 datapoints and out of these, only eight (8) were classified as outliers. This is an imbalanced dataset. Resampling by SMOTE (Synthetic Minority Oversampling Technique) was used to synthetically generate data for the training set. Seven (7) feature selection methods were also investigated and their results discussed and analysed. In doing this, a more balanced dataset was achieved which was tested and validated on the unseen data (testing set). The metrics indicated that a subset of these features can be collected whilst still maintaining the supermarket outliers.","PeriodicalId":206492,"journal":{"name":"Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124991203","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