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2020 Advances in Science and Engineering Technology International Conferences (ASET)最新文献

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Mathematical misconceptions of students in Engineering education: statistical analysis and suggestions to pedagogical approaches 工程教育中学生的数学误解:统计分析及对教学方法的建议
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118207
Jinendrika Weliwita, Jess Sanchez, Mohammad Almasalmeh
Misconceptions in mathematics of students entering to the university has challenged engineering education pedagogy. Awareness of educators of the existence of the misconceptions can ensure that they do not retain in engineering learners. Misconceptions arise when making the same error recursively and different from the mistakes in mathematics. Moreover, if the misconceptions were undetected, they would negatively affect the future learning and hence detrimental. This research is focused on identifying the common misconceptions through a comprehensive analysis and their relation to the engineering education and hence to emphasize the importance of the remedies in school level and undergraduate level. To this end, 132 engineering undergraduate students from different levels and of mixed gender were participated in this study. Sets of data were collected from a conceptual error testing, which contains questions that include common errors, which students make as misconceptions in basic mathematics. Further, a questionnaire was designed to capture their confidence in answering each question. We employed statistical tools to perform analysis and the results depicted that the misconceptions seemed to have a significant impact on their performance in the university, which is captures by GPA, and the performance of the emirates standardized tests and their high school performance in Mathematics. However, the high school test marks and the conceptual error test marks have no correlation and hence high school tests do not reflect their conceptual errors and hence the remedies are required for improve school level tests. Moreover, the students have not rectified misconception errors in mathematics throughout the degree level. The student's confidence level, for each question was recorded in 1–5 scale and the statistical analysis suggested that there is no relation with the confidence in answering a question. More importantly, results revealed that the students make conceptual errors very confidently and giving correct answer with no confidence and hence some students aware of the misconceptions and however they should be guided properly to overcome them. The study implicated that the educators are required to adopt techniques in instructional methods and assessments methods to correct misconceptions to enhance deep learning. This should be accomplished at the foundation level and hence the students foundation should be thoroughly studied to prevent the arising of such misconceptions and eliminate the present misconceptions.
初入大学的学生对数学的误解对工程教育教学提出了挑战。教育工作者意识到误解的存在,可以确保它们不会在工程学习者中保留。当递归地犯同样的错误时,就会产生误解,而这些错误与数学中的错误不同。此外,如果这些误解没有被发现,它们将对未来的学习产生负面影响,从而有害。本研究的重点是通过综合分析找出常见的误解及其与工程教育的关系,从而强调在学校层面和本科层面补救的重要性。为此,本研究共选取了132名不同层次、男女混合的工科本科生参与。数据集是从概念错误测试中收集的,该测试包含一些常见错误的问题,这些错误是学生在基础数学中产生的误解。此外,还设计了一份问卷,以捕捉他们回答每个问题时的信心。我们使用统计工具进行分析,结果表明,这些误解似乎对他们在大学中的表现(这是由GPA捕获的)、阿联酋标准化考试的表现以及他们在高中数学方面的表现产生了重大影响。然而,高中考试分数和概念错误测试分数没有相关性,因此高中考试没有反映出他们的概念错误,因此需要补救措施来提高学校水平考试。此外,学生们在整个学位阶段都没有纠正对数学的误解。学生对每个问题的信心水平被记录在1-5的范围内,统计分析表明,这与回答问题的信心没有关系。更重要的是,结果显示,学生犯概念错误非常自信,并给出正确的答案没有信心,因此一些学生意识到错误的概念,但他们应该得到适当的指导,以克服这些错误。该研究表明,教育工作者需要在教学方法和评估方法中采用技术来纠正误解,以增强深度学习。这应该在基础阶段完成,因此应该彻底研究学生的基础,以防止这种误解的产生,并消除目前的误解。
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引用次数: 0
Total Productive Maintenance Implementation's Barriers and Enablers in Indonesian Manufacturing Companies 印尼制造企业全面生产维护实施的障碍与推动因素
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118224
H. Prabowo, I. Hilmy, Erry Yulian Triblas Adesta
Nowadays, Corporate is implementing Total Productive Maintenance (TPM) in order to survive in a very challenging and competitive market. If they want to survive, the have to maintain and even increase their equipment efficiency. However, the TPM utilization is a relatively difficult activity. Some obstacles as well as the supporting factors will determine the speed of the implementation process. Identifying and analyzing those obstacles and supporting factor are very important steps to gain an effective utilization of the TPM. The main discussion of this research is to acquire the significant barriers and enablers of TPM implementation in Indonesian manufacturing companies using Cochran test analysis. In this report, these barriers and enablers have been determined through the literature; data collecting is done by a questionnaire-based survey. There are five significant enablers and seven barriers affecting the achievement rate of TPM.
当今,企业为了在充满挑战和竞争的市场中生存,正在实施全面生产维护(TPM)。如果他们想要生存,就必须保持甚至提高设备的效率。然而,TPM的利用是一个相对困难的活动。一些障碍和辅助因素将决定执行进程的速度。识别和分析这些障碍和支持因素是有效利用TPM的重要步骤。本研究的主要讨论是利用科克伦测试分析获得印尼制造公司实施TPM的重大障碍和推动因素。在本报告中,通过文献确定了这些障碍和推动因素;数据收集是通过问卷调查完成的。影响TPM成活率的主要因素有5个,障碍有7个。
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引用次数: 2
Oblique Ballistic Impact Simulation of Flexible Body Armors Under Viscous Friction 粘性摩擦下柔性装甲斜弹道冲击仿真
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118283
A. Yavuz, S. L. Phoenix
The projectiles have included RCC and spherical shapes, and viscoelastic interactions and slip between the both the projectiles and the target and between the target layers and fabric yarns have been modeled. Besides exploring new phenomena, these models have been useful for validating previous analytical models where various simplifying assumptions were necessary. Thus far, however, the numerical models have had the limitation (albeit a computational advantage) of assuming a symmetric framework whereby numerical solution of only one quarter of the projectile and target plane was necessary. Consequently, only normal (perpendicular) impact could be studied. To address this limitation, we have turned our attention to modeling projectile impact into the full target plane thus making it possible to treat oblique impact at an arbitrary angle of incidence. This would also make it possible to investigate boundary effects (clamped, free) where projectile impact occurs close to one boundary or near a corner. Making such generalizations has resulted in unanticipated challenges arising from modeling rapid projectile sliding on the target, and thus we have ‘backtracked’ to a simpler early version of the discretization model and begun with angled impact by a right circular cylinder (RCC) on a biaxial, plate-like structure. These challenges have led us to focus initially on scrutinizing features suspected of being possible numerical artifacts in the results, or, establishing through well-understood test cases that the features observed are indeed realistic and not artifacts. The most important findings come from a study varying the angle of projectile incidence as well as the coefficient of viscous sliding friction between the RCC projectile and fibrous target. It is shown that increasing the degree of viscous friction eventually leads to increasing fiber strain with angle of incidence up to some angle were a maximum is achieved. Generally, we find that oblique impact gives rise to important phenomena not captured by impact perpendicular to the target.
弹丸包括RCC和球形弹丸,并对弹丸与目标之间、目标层与织物纱线之间的粘弹性相互作用和滑移进行了建模。除了探索新现象外,这些模型还有助于验证以前的分析模型,其中需要各种简化假设。然而,到目前为止,数值模型有局限性(尽管在计算上有优势),即假设一个对称框架,因此只有四分之一的弹丸和目标平面的数值解是必要的。因此,只能研究法向(垂直)冲击。为了解决这一限制,我们已经把我们的注意力转向模拟弹丸冲击到整个目标平面,从而使它有可能处理斜冲击在一个任意入射角。这也将使研究边界效应(夹紧,自由),弹丸冲击发生在靠近一个边界或靠近一个角落。做出这样的概括导致了意想不到的挑战,因为建模快速弹丸在目标上滑动,因此我们已经“回溯”到一个更简单的离散化模型的早期版本,并开始与双轴,板状结构上的右圆柱(RCC)的角度冲击。这些挑战使我们最初关注于仔细检查被怀疑是结果中可能的数字工件的特性,或者通过充分理解的测试用例来确定观察到的特性确实是现实的,而不是工件。最重要的研究结果来自于改变弹丸入射角以及碾压混凝土弹丸与纤维靶间的粘性滑动摩擦系数的研究。结果表明,随着入射角的增大,纤维应变随入射角的增大而增大,直至达到最大值。一般来说,我们发现斜撞击会产生一些重要的现象,而垂直于目标的撞击不会捕捉到这些现象。
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引用次数: 0
The Impact of The Rear Seat Belt Use on Traffic Safety in the UAE 后排安全带的使用对交通安全的影响在阿联酋
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118388
Arwa Najah, Muamer Abuzwidah, Doaa Khalil
Helping to reduce the number of deaths and serious injuries on our roads network is one of the most critical issues in transportation field nowadays. Wearing a seatbelt is among highly effective ways to protect passengers in case of accidents. However, previous studies had shown that there is still significant percentage of road users who are not wearing a seatbelt especially those who are sitting in the back seats of the vehicle. This study aims to determine the safety effectiveness of the back-seat belt use law that was enforced in 2017 in the United Arab Emirates on people's commitment to wear it. This study also aims to study the public awareness of this important law. A survey was conducted by collecting data from various road users located in the United Arab Emirates in Fall 2019. A T-test and ANOVA test were applied to find the correlation between the different sections of the survey. The results showed that there is a correlation between the people's driving experience and their use of the back-seat belt. In addition, it was clear that this year witnessed an increase in the number of people who said that they never wear the back-seat belts in comparison with the previous study where most of the new drivers admitted to never wearing/asking to wear the seat belt. The results of the survey call for firm actions to be performed by law enforcement regarding the use of the back-seat belt for the safety of the public.
如何减少道路交通事故中的死亡和重伤人数是当今交通领域最关键的问题之一。系安全带是在发生事故时保护乘客的最有效方法之一。然而,之前的研究表明,仍然有很大比例的道路使用者没有系安全带,尤其是那些坐在汽车后座上的人。这项研究的目的是确定2017年在阿拉伯联合酋长国实施的后座安全带使用法对人们佩戴安全带的承诺的安全有效性。本研究还旨在研究公众对这一重要法律的认识。2019年秋季,通过收集阿拉伯联合酋长国各种道路使用者的数据进行了一项调查。应用t检验和方差分析检验来发现调查不同部分之间的相关性。结果表明,人们的驾驶经验与他们使用后座安全带之间存在相关性。此外,很明显,与之前的研究相比,今年表示从未系过安全带的人数有所增加,而在之前的研究中,大多数新司机承认从未系过或要求系过安全带。调查结果呼吁执法部门就使用后座安全带以保障公众安全采取坚决行动。
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引用次数: 2
Public Perception and Willingness to Pay for High-Occupancy Toll (HOT) Lanes in the United Arab Emirates: Questionnaire-Based Survey 阿拉伯联合酋长国公众对高占用收费(HOT)车道的看法和支付意愿:基于问卷的调查
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118315
A. Shabib, M. Khalil, Muamer Abuzwidah, Samer M. Barakat
The present paper aims at investigating the public perception of drivers in the United Arab Emirates (UAE) to the implementation of high-occupancy toll (HOT) lanes in major freeways. A questionnaire-based survey was developed and distributed to drivers in the UAE in order to acquire an indication regarding the public's willingness to use and pay (WTP) for utilizing HOT lanes. A total of 561 responses were received and analyzed in order to identify the relationships between different characteristics and the public's WTP. Advanced statistical analysis by means of the one-way analysis of variance (ANOVA) test showed that age, gender, average monthly income, and trips frequency significantly affected the WTP of the public under two conditions: 1) Normal driving conditions, and 2) Driving under emergency conditions. However, correlation analysis showed that only age, average monthly income, and trips frequency had strong correlations with the public's WTP for HOT lanes. However, none of the parameters had significant correlations with the public's WTP for HOT lanes under emergency conditions, as all respondents opted to pay high amounts in emergency situations. Furthermore, a linear model was developed through regression analysis which estimates the WTP of drivers based on age, average monthly income, and trips frequency between emirates. Overall, based on the results of the present study, it can be concluded that there is a positive perception from the public regarding the implementation of HOT lanes in the UAE.
本论文旨在调查公众对阿拉伯联合酋长国(UAE)司机在主要高速公路上实施高占用收费(HOT)车道的看法。一项基于问卷的调查被开发并分发给了阿联酋的司机,以获得关于公众使用和支付(WTP)使用热车道的意愿。我们共收到561份回复,并对其进行分析,以确定不同特征与公众WTP之间的关系。通过单因素方差分析(ANOVA)检验进行高级统计分析,发现年龄、性别、平均月收入和出行频次在正常驾驶和紧急驾驶两种情况下对公众WTP有显著影响。然而,相关分析显示,只有年龄、平均月收入和出行频率与公众对HOT车道的WTP有很强的相关性。然而,这些参数都与公众在紧急情况下对HOT车道的WTP有显着相关性,因为所有受访者都选择在紧急情况下支付高额费用。此外,通过回归分析建立了一个线性模型,该模型基于年龄、平均月收入和阿联酋之间的旅行频率来估计驾驶员的WTP。总体而言,根据本研究的结果,可以得出结论,公众对阿联酋实施HOT车道持积极态度。
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引用次数: 1
A comparative study of Lane Change Assistance Protocols at Road Network 路网中辅助变道方案的比较研究
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118374
Maram Bani Younes
Driving over road networks is an everyday challenge that several research studies have been proposed to make it more safe and convenient. One of the main issues need to be efficiently and accurately handled is lane change scenarios. Drivers need to change their driving lane to take an exit on a road or to open the way for faster or emergency vehicle on that lane. Changing lane over highway road scenarios is a more serious challenge than changing it on downtown areas. This is due to the relatively high speed moving vehicles there. Vehicles in blind spots and wrong estimations of the distances between vehicles are the main two challenges that en-face drivers while changing their driving lanes. These cases may cause fatal accidents and lead to several damage consequences. This paper aims to investigate and compare the different previous proposed protocols that have been used to control safe lane changing for autonomous vehicles. Moreover, it reviews the intelligent driving assistance protocols that help drivers to safely change their lanes in several scenarios.
在道路网络上驾驶是一项日常挑战,已经提出了几项研究,以使其更安全、更方便。需要有效和准确地处理的主要问题之一是变道场景。司机需要改变车道,以便在道路上选择出口,或者为该车道上更快的车辆或紧急车辆让路。在高速公路上换车道比在闹市区换车道更具挑战性。这是由于那里的车辆移动速度相对较高。盲区车辆和对车距的错误估计是驾驶员在变换车道时面临的两大挑战。这些情况可能会造成致命的事故,并导致几种损害后果。本文旨在研究和比较之前提出的用于控制自动驾驶汽车安全变道的不同协议。此外,它还回顾了智能驾驶辅助协议,帮助驾驶员在几种情况下安全地改变车道。
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引用次数: 1
Autonomous Naval Surface Vehicle for Energy Generation in Open Seas 用于公海能源生产的自主海军水面车辆
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118358
Salman Alhammadi, Fadhil Al-Shami, Ali Alhendi, O. Baobaid, Ali Almaskary, A. Bouhraoua
Environmental awareness is dictating the use of renewable energy as an alternative to fossil fuels. Solar energy has become a serious alternative. Open seas and mobility constitute a very advantageous combination. The exemption from the costs of land acquisition and preparation is a clear advantage for using open seas to deploy solar. The mobility of the solar system ensures that it is less sensitive to the fluctuations of the weather than for fixed on land deployments. Autonomous naval surface vehicles are the ideal instrument to deploy solar in open seas. Dubbed with on-ship energy storage, it constitutes a complete solution for energy harvesting in open seas. This paper is presenting the challenges and tradeoffs related to the design of an autonomous solar boat with compressed air energy storage (CAES).
环保意识要求使用可再生能源作为化石燃料的替代品。太阳能已经成为一种重要的替代能源。公海和机动性构成了非常有利的组合。免除征地和准备成本是利用公海部署太阳能的一个明显优势。太阳能系统的机动性确保了它对天气波动的敏感度低于固定在陆地上的部署。自主海军水面航行器是在公海部署太阳能的理想工具。它被称为船上能量存储,构成了在公海收集能量的完整解决方案。本文介绍了与设计具有压缩空气储能(CAES)的自主太阳能船相关的挑战和权衡。
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引用次数: 1
Assistive and Rehabilitation Robotics for Upper Limb Impairments in Post-Stroke Patients: Evaluation Criteria for the Design and Functionality 脑卒中后上肢损伤的辅助和康复机器人:设计和功能的评估标准
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118320
Aliaa Sherif Karam, F. Alnajjar, Munkhjargal Gochoo
Rehabilitation and assistive robotics are beneficial for chronic and subacute stroke patients with upper limb impairments. Rehabilitation robotics is the use of robotic machinery and devices during therapy sessions to motivate and optimize the patient's upper limb motor functions. While assistive robotics is the use of portable robotic devices, which can assist the post stroke user with their upper limb movements along their daily tasks. Assistive robotic devices may also allow patients to “in-directly” improve their motor functions through encouraging them to utilize their affected limb on daily basis. Thus, an assistive device is seen to be essential complementary to a rehabilitation device. Before marketing these two types of devices, they should undergo evaluation studies and clinical trials. This process will not only ensure patient's safety and optimal outcomes, but also help to overcome challenges in promoting the final product. The aim of this short article is to provide a brief review of current rehabilitation and assistive robotics, highlighting how they are complementary to each other, and how they can be evaluated and improved.
康复和辅助机器人技术对上肢损伤的慢性和亚急性脑卒中患者有益。康复机器人是在治疗过程中使用机器人机械和设备来激励和优化患者上肢运动功能。而辅助机器人是使用便携式机器人设备,它可以帮助中风后的用户在日常任务中进行上肢运动。辅助机器人设备还可以通过鼓励患者每天使用受影响的肢体来“直接”改善他们的运动功能。因此,辅助装置被看作是康复装置必不可少的补充。在销售这两种类型的设备之前,它们应该进行评估研究和临床试验。这一过程不仅将确保患者的安全和最佳结果,而且有助于克服推广最终产品的挑战。这篇短文的目的是简要回顾当前的康复和辅助机器人技术,强调它们是如何相互补充的,以及如何评估和改进它们。
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引用次数: 3
Investigation of Fall Hazards from Ablution Floors of Mosques in the UAE: Assessments of Traction and Texture Features and Their Effects on Slipperiness 阿联酋清真寺洗浴地板的坠落危险调查:牵引力和质地特征的评估及其对滑性的影响
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118257
In-Ju Kim, O. H. Omar, Rinada Abbas El Deeb
The number of mosques has been continuously increased around the world due to the popularity of the Islamic religion. Mosques and praying areas also have been grown rapidly. Unlike other building works, constructing mosques and the praying area is an inspiring defy. Amongst the confronts faced, slip and fall hazards are significant concerning issue to the worshipers. Since noticeable amounts of pollutants are often found at the ablution spaces due to the prayers' body cleaning practices, the floorings are coped with slick situations. In spite of such important safety problem, researches on ablution floors' fall incidents and related prevention strategies are hard to find in the literature. This paper reports on the further detections for the care stance of ablution spaces from arbitrarily invited mosques in the Dubai and Sharjah Emirates. Twenty mosques were randomly invited to measure their safety conditions from a viewpoint of traction behaviours and surface finishes of ablution floors. The present study outcomes recognize that the ablution floorings are not currently protected against falls, especially under the lubricated conditions. Thus, this study suggests two crucial issues to take immediate actions: 1) managers of the mosques should be fully aware of the current safety conditions of their ablution floors and find solutions to prevent fall risks and 2) prayers also should pay extra cares on their ablution floors to avoid any falls during the preparation of their ablution process.
由于伊斯兰教的普及,世界各地清真寺的数量不断增加。清真寺和祈祷场所也迅速增加。与其他建筑工程不同,建造清真寺和祈祷区是一项鼓舞人心的挑战。在面临的对抗中,滑倒和跌倒的危险对敬拜者来说是一个重要的问题。由于祈祷者的身体清洁习惯,经常在洗浴空间发现明显的污染物,因此地板被处理得很光滑。尽管是如此重要的安全问题,但文献中很少有关于洗浴地板坠落事故的研究以及相关的预防策略。本文报告了对迪拜和沙迦酋长国随意邀请的清真寺的沐浴空间护理立场的进一步检测。随机邀请20座清真寺从牵引行为和沐浴地板表面光洁度的角度来测量其安全状况。目前的研究结果认识到,目前的洗浴地板没有防止坠落的保护,特别是在润滑条件下。因此,本研究建议应立即采取两个关键问题:1)清真寺的管理人员应充分了解其沐浴层的安全现状,并找到防止跌倒风险的解决方案;2)祈祷者也应特别注意其沐浴层,以避免在准备沐浴过程中摔倒。
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引用次数: 2
Energy and Economic Analysis of Flash Steam Geothermal Power Plants in Lebanon 黎巴嫩闪蒸地热发电厂能源与经济分析
Pub Date : 2020-02-01 DOI: 10.1109/ASET48392.2020.9118255
M. Assad, M. Alshabi, A. Khosravi, A. Hamida, Z. Said
Geothermal energy has a great potential to be a competitor to other renewable resources, as it is abundant and plentiful, where one production well can be sufficient for a number of uses. However, geothermal energy systems are advancing to meet the growing demand for electrical power and other applications that utilize thermal energy as a source. In this work, a feasibility study was done in order to study the possibility of geothermal power plant implementation of 1 MW in Hasbaya, Lebanon. According to the available geothermal resource of 200°C at 3000 m depth, two geothermal plant types were pointed out, including single flash and double flash plants, showing that the double flash has a better performance in terms of actual plant efficiency of 8.16%. In addition, the condenser type affects the performance; thus, utilizing an air-cooled condenser will be suitable for application. In addition to the performance, the cost analysis shows that using air-cooled will reduce the capital cost and increase the net present value.
地热能具有成为其他可再生资源竞争对手的巨大潜力,因为地热能储量丰富,一口生产井可以满足多种用途。然而,地热能源系统正在发展,以满足对电力和其他利用热能作为能源的应用日益增长的需求。在这项工作中,进行了可行性研究,以研究在黎巴嫩Hasbaya实施1兆瓦地热发电厂的可能性。根据3000 m深度200℃的可利用地热资源,指出了单闪式和双闪式两种地热发电厂类型,双闪式的实际电厂效率为8.16%,表现出较好的性能。另外,冷凝器的类型影响性能;因此,利用风冷式冷凝器将适合于应用。除了性能,成本分析表明,使用风冷将降低资本成本,增加净现值。
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引用次数: 0
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2020 Advances in Science and Engineering Technology International Conferences (ASET)
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