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2020 3rd International Conference on Computing, Mathematics and Engineering Technologies (iCoMET)最新文献

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Pattern Reconfigurable Two Element Printed Patch Antenna for THz Wireless Applications 用于太赫兹无线应用的模式可重构双元件印刷贴片天线
M. Usman, Siraj Tanoli, Faizan Khan, Wasi-Ur-Rehman Khan, Syed Muhammad Umar, S. Ullah
In this paper, pattern reconfigurable two element patch antenna is presented at 0.6THz frequency. Both the patch elements are fed from the common feed line and each patch element is fed from each of the corner of feed line to achieve proper impedance matching for both the patch elements. Switches (PIN diodes) are used to control reconfigurable characteristics. The purpose of this work is to achieve pattern re-configurability at THz frequency by using patch antenna. The result shows that it can divert its pattern in two different directions i.e. 26° and -26° dependent on the configuration of switches. Directivity and gain of the proposed model is 7.1 dBi and 6.9 dB respectively with radiation efficiency of 97%. The antenna has a wider bandwidth of 54.6GHz.
本文提出了一种0.6THz频率方向图可重构双元贴片天线。两个贴片元件从公共馈线馈电,每个贴片元件从馈线的每个角馈电,以实现两个贴片元件的适当阻抗匹配。开关(PIN二极管)用于控制可重构特性。本工作的目的是利用贴片天线实现太赫兹频率下的方向图可重构性。结果表明,根据开关的配置,它可以在26°和-26°两个不同的方向上转移其模式。该模型的指向性和增益分别为7.1 dBi和6.9 dB,辐射效率为97%。该天线的带宽更宽,为54.6GHz。
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引用次数: 2
An Exploratory Study of Students’ Learning Performance In Flipped Classroom Using Decision Tree and Regression 基于决策树和回归的翻转课堂学生学习绩效的探索性研究
Fatima Bashir, Dr. Sohaib Ahmed, M. Marouf
Flipped Classroom model is one of the most effective and influential approaches that follow a student-centered approach. It may enhance students’ learning skills and creates a motivational level by conducting learning activities in pre-class and post-class sessions. The main purpose of this research is to demonstrate how a combined, teaching and machine learning approach can be useful in evaluating student learning outcomes by analyzing their learning performance. Furthermore, this can help the instructor to counsel students whose performance is lagging during the semester. To perform predictive analysis and classification, we have implemented linear regression and decision tree classifier that helps the instructor to predict and classify students learning outcomes based on their overall performance before final exams.
翻转课堂模式是遵循以学生为中心的教学方法中最有效、最具影响力的教学方法之一。通过在课前和课后进行学习活动,可以提高学生的学习技能,并创造一种激励水平。本研究的主要目的是通过分析学生的学习表现,展示教学和机器学习相结合的方法如何在评估学生的学习成果方面发挥作用。此外,这可以帮助教师辅导那些在学期中表现落后的学生。为了进行预测分析和分类,我们实现了线性回归和决策树分类器,帮助教师根据学生期末考试前的整体表现预测和分类学生的学习成果。
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引用次数: 0
Generalized Area Spectral Efficiency for Cognitive Radio Network using Lame Curve 基于Lame曲线的认知无线网络广义区域频谱效率研究
Qasim Naseer, A. Moeed, Junaid Imtiaz, Muhammad H.D. Khan
For easy functioning, cognitive radio networks (CRNs) are equipped with centralized center also known as decision making controller (DMC). The DMC handles the control and data flow from respective nodes to their destination. The performance of CRN is largely dependent on the control and data channel powers use to broadcast communicate over the network consisting of a DMC, a Cognitive User Equipment (CUE) and a licensed user equipment (LUE). Generalized Area Spectral Efficiency (GASE) acts as a performance evaluation metric for various communication networks. This paper focusses on developing an analytical result in terms of GASE and allowable collision probability for a CRN. The analytical analysis is derived using Lame Curve based on distances between DMC-CUE and CUE-LUE. Simulation result shows CRN performance based on GASE metrics for varying parameters.
为了便于操作,认知无线网络(crn)配备了集中式中心,也称为决策控制器(DMC)。DMC处理从各个节点到目的地的控制流和数据流。CRN的性能在很大程度上取决于用于在由DMC、认知用户设备(CUE)和许可用户设备(LUE)组成的网络上进行广播通信的控制和数据信道功率。广义区域频谱效率(GASE)是各种通信网络的性能评价指标。本文的重点是建立一个基于GASE和允许碰撞概率的CRN的分析结果。基于DMC-CUE和CUE-LUE之间的距离,利用Lame曲线进行了解析分析。仿真结果显示了不同参数下基于GASE指标的CRN性能。
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引用次数: 0
Newly Constructed Power Plants in Pakistan along-with HR Practices 巴基斯坦新建电厂及人力资源实践
Liu Dunnan, Fazal Hussain Awan, Usama Abrar, A. Saleem, J. Yang, Shafaat Ali
Energy shortage in Pakistan from last ten-years encourages small and big industries to construct their own Power-plant. These plants range from 1MW to 20MW. The power plant has different departments to handle engineering, maintenance, operation and related issues. Human resource (HR) department has the presence to efficiently handle man-power. This academic work takes a look at how human resource (HR) practices fix people working in power plants and decrease employee embeddedness. Indeed, we inquired into the revolving repercussion of the organizational appointment embedded in an association between human resource (HR), and a member of staff revenue objective. The assumptions are experimented via data from 200 respondents from newly constructed power plants in Pakistan. As forecasted, performance appraisal and organizational rewards decreased turnover intentions. Employee development activities increased employees’ perceptions with greater turnover intentions. The results suggest that organizations hoping to use HR practices to deter turnover may experience the greatest success by using performance management and reward systems to increase perceptions of organizational fit.
巴基斯坦过去十年的能源短缺促使大大小小的工业建设自己的发电厂。这些电厂的容量从1兆瓦到20兆瓦不等。电厂有不同的部门来处理工程、维护、运行和相关问题。人力资源(HR)部门有能力有效地管理人力资源。这项学术工作着眼于人力资源(HR)实践如何固定在发电厂工作的人,并降低员工的嵌入性。事实上,我们调查了在人力资源(HR)和员工收入目标成员之间的关联中嵌入的组织任命的循环影响。这些假设是通过来自巴基斯坦新建电厂的200名受访者的数据进行实验的。正如预测的那样,绩效评估和组织奖励降低了离职意愿。员工发展活动增加了员工的感知,员工的离职意愿也更高。结果表明,希望利用人力资源实践来阻止人员流失的组织可能会通过使用绩效管理和奖励系统来增加组织契合度的感知而获得最大的成功。
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引用次数: 0
Role of Reward satisfaction on Employee Outcome: A case of power distribution sector of Pakistan 薪酬满意度对员工工作成果的影响:以巴基斯坦配电行业为例
Liu Dunnan, Fazal Hussain Awan, Nasif Raza Jaffri, Shoaib Ahmad
Pakistan is a big country with diverse nature of land ranging from mountain, deserts to plain lands. There are eleven distribution companies to cover electrical power distribution over 100Million consumers. The field work of electrical distribution is sometimes life threating and tough. The consumers have their first interaction with distribution staff. A satisfied distribution staff led towards satisfied customer. The main objective of this research work is to look for the influence of various reward types on several variables of a company’s outcomes. These include worker outcomes and performance, like satisfaction from their jobs and turnover intention. Only remunerations alone do not encourage the workers’ attitudes and responses but their approach towards the remunerations regarding the fulfillment of their outcomes from the persuaded job. Employees manage their attitudes or responses, which might be positive or negative, depending on their fulfilment of remunerations. In the context of equity theory, if a worker thinks the outcome of his/her input to output percentage lacks in contrast to his/her colleagues, it might develop a sense of non-fulfilment and hence might lose their output efficacy.
巴基斯坦是一个土地种类繁多的大国,从山地、沙漠到平原都有。全国有11家配电公司,覆盖1亿多用户的电力分配。现场配电工作有时是危及生命和艰苦的。消费者第一次与分销人员互动。一个满意的配送人员会带来满意的客户。本研究工作的主要目的是寻找各种奖励类型对公司业绩的几个变量的影响。这些包括员工的成果和表现,比如对工作的满意度和离职意向。只有薪酬本身不能鼓励工人的态度和反应,而是他们对薪酬的态度和反应,这与他们从被说服的工作中获得的成果有关。员工管理他们的态度或反应,这可能是积极的或消极的,这取决于他们对报酬的履行。在公平理论的背景下,如果一个工人认为他/她的投入产出百分比的结果与他/她的同事相比缺乏,那么他/她可能会产生一种非成就感,从而可能失去他们的产出效率。
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引用次数: 0
Evaluating Energy Efficiency of Buildings using Artificial Neural Networks and K-means Clustering Techniques 基于人工神经网络和k -均值聚类技术的建筑能效评估
A. Nazir, Ahsan Wajahat, F. Akhtar, Faheem Ullah, Sirajuddin Qureshi, Sher Afghan Malik, A. Shakeel
The consumption of energy in buildings has risen abruptly over the last decades. Due to less energy-efficient buildings, most of the energy is being thrown in our surroundings thus making an adverse effect on our environment. In this paper, heating and cooling loads of private or non-commercial buildings are covered. By implementing the proposed technique, which is a blend of cluster analysis and Artificial Neural Network (ANN), evaluation and prediction are performed. The estimation of heating and cooling loads of private or non-commercial buildings are performed using eight input variables in the ANN-based model. The details of variables are as follows, a relative surface area, total height, compactness, roof area, glazing area distribution, orientation, glazing area, and wall area. K-means clustering methodology is then used to cluster buildings on the basis of output variables. Stand on simulated literature data, evaluation of 768 different private or non-commercial buildings is done using the above-suggested method. Research results depicted that depending upon input variables, the above-suggested approach can efficiently evaluate heating and cooling load that is very much close to real test results.
在过去的几十年里,建筑物的能源消耗急剧上升。由于建筑的节能程度较低,大部分的能源被扔到我们周围的环境中,从而对我们的环境产生了不利的影响。本文涵盖了私人或非商业建筑的冷热负荷。通过将聚类分析和人工神经网络(ANN)相结合的方法进行评价和预测。在基于人工神经网络的模型中,使用8个输入变量对私人或非商业建筑的冷热负荷进行估计。变量的细节如下:相对表面积、总高度、密实度、屋顶面积、玻璃面积分布、朝向、玻璃面积、墙面面积。然后使用k均值聚类方法在输出变量的基础上对建筑物进行聚类。在模拟文献数据的基础上,采用上述方法对768栋不同类型的私人或非商业建筑进行了评价。研究结果表明,根据输入变量的不同,上述方法可以有效地评估出与实际测试结果非常接近的冷热负荷。
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引用次数: 1
Backstepping based MPPT Control Technique for Permanent Magnet Synchronous Generator Wind Energy Conversion System 基于反演的永磁同步发电机风能转换系统MPPT控制技术
U. Khan, Zaheer Alam, Waleed Ahmad, Z. Khan, Rashid Khan, Z. Ullah
The unpredictable and stochastic speed of the wind makes the entire wind energy conversion system (WECS) highly nonlinear. In such situations, the controller aim is to maximize the extracted power (MP). At first stage, the dynamic model of the permanent magnet synchronous generator (PMSG) is developed and then the model is converted to Bronwsky form. Consequently, the overall system is subdivided into two subsystems i.e., a second order visible dynamic system and a first order internal dynamic system. The internal dynamics are proved stable i.e., the system under study is minimum phase. Now, the main task is that the output of the visible dynamic system should track a varying profile of the wind speed. This paper presents the nonlinear backstepping based maximum power point tracking (MPPT) algorithm to ensure the MP extraction from variable-speed (fixed pitch) WECS. MATLAB/Simulink tool is used for testing the proposed controller under variable wind speed profile. The simulation results validate the robustness of the proposed control scheme. Furthermore, backstepping is compared with feedback linearization (FL) control that clearly outshines our proposed strategy.
风速的不可预测性和随机性使得整个风能转换系统高度非线性。在这种情况下,控制器的目标是最大限度地提取功率(MP)。首先建立了永磁同步发电机的动力学模型,然后将模型转化为布朗斯基形式。因此,整个系统被细分为两个子系统,即二阶可见动力系统和一阶内部动力系统。内部动力学稳定,即系统处于最小相位。现在,主要的任务是,可见光动态系统的输出应该跟踪风速的变化轮廓。提出了一种基于非线性反演的最大功率点跟踪算法,以保证变速(定螺距)wcs的最大功率点提取。利用MATLAB/Simulink工具对所设计的控制器在变风速剖面下进行了测试。仿真结果验证了所提控制方案的鲁棒性。此外,将反演与反馈线性化(FL)控制进行了比较,结果明显优于我们提出的策略。
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引用次数: 4
Robust Sliding Mode Control based Maximum Power Point Tracking of Solar Photovoltaic System 基于鲁棒滑模控制的太阳能光伏系统最大功率点跟踪
Arslan Hameed, Haris Sheh Zad, A. Ulasyar, Jibran Hashim
This article proposes a maximum power point tracking (MPPT) algorithm based on perturb & observe (P&O) method and sliding mode control (SMC). For efficient control of the PV system, the accurate and efficient model of the system is required. The major problem has been occurred due to the nonlinear behavior of the I-V characteristic curve in PV systems. This nonlinear behavior is due to varying irradiance and temperature. In this article, the SMC based P&O MPPT technique is utilized to track the maximum power for the PV system. A two-step sliding mode control is designed. Firstly, a sliding surface is designed and secondly, discontinues control law is designed. The P&O algorithm is a simple, easy and less complex method to use with SMC. The smooth highest powerpoint is attained at different irradiances in less time. The System includes PV panel, SMC, MPPT P&O method and dc/dc boost converter. The efficiency of the proposed method can be determined by simulation. The results have been checked at different temperatures and different irradiances in the existence of load. The simulation results confirm the proposed method better efficiency.
本文提出了一种基于扰动与观测(P&O)方法和滑模控制(SMC)的最大功率点跟踪(MPPT)算法。为了对光伏发电系统进行有效的控制,需要建立准确、高效的光伏发电系统模型。主要问题是由于光伏系统的I-V特性曲线的非线性行为。这种非线性行为是由于辐照度和温度的变化。在本文中,利用基于SMC的P&O MPPT技术来跟踪光伏系统的最大功率。设计了两步滑模控制。首先设计了滑动面,然后设计了间断控制律。P&O算法是一种简单、容易、不复杂的SMC算法。在不同的辐照度下,在较短的时间内获得光滑的最高ppt。该系统包括光伏面板、SMC、MPPT P&O方法和dc/dc升压变换器。通过仿真验证了该方法的有效性。结果在不同温度和不同辐照度下进行了验证。仿真结果验证了该方法的有效性。
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引用次数: 3
Towards an Optimal Residential Home Energy Management in Presence of PV Generation, Energy Storage and Home to Grid Energy Exchange Framework 面向光伏发电、储能和家庭到电网能源交换框架下的最佳住宅家庭能源管理
Muhammad Muzaffar Iqbal, Intisar Ali Sajjad, Ab Manan, M. Waseem, Ammad Ali, Amir Sohail
Electricity shortages are severe for developing countries like Pakistan as a result of massive population growth. To solve this problem Renewable energy resources (RER’s) and energy storage systems (ESS) can play a considerable role. In this paper, we have analyzed the effects on the operational cost of residential electricity consumers by installing the rooftop photovoltaic (PV) and ESS on their smart homes. Additionally, the home to grid (H2G) energy exchange framework is also included to explore its benefits on energy management. Home Energy Management (HEM) problem is formulated with the integration of PV and ESS by considering user preferences and other system boundaries. A Grey wolf optimization (GWO) algorithm is used to find out optimal scheduling of appliances. The findings of the simulations indicate that the proposed solution can improve the performance of the home electricity scheduling, reduced the effect of uncertainty on the system and decrease the overall energy consumption cost.
对于像巴基斯坦这样的发展中国家来说,由于人口的大量增长,电力短缺非常严重。为了解决这一问题,可再生能源和储能系统可以发挥相当大的作用。本文分析了在智能家居中安装屋顶光伏(PV)和ESS对居民用电用户运营成本的影响。此外,还包括家庭到电网(H2G)能源交换框架,以探索其在能源管理方面的好处。家庭能源管理(HEM)问题通过考虑用户偏好和其他系统边界,将光伏和ESS集成在一起。采用灰狼优化算法求解设备的最优调度问题。仿真结果表明,该方案可以提高家庭用电调度的性能,减少不确定性对系统的影响,降低整体能耗成本。
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引用次数: 17
Smart Garbage Bin: An IoT Platform for Smart Waste Management System in Pakistan 智能垃圾桶:巴基斯坦智能垃圾管理系统的物联网平台
S. Memon, Abdul Rauf Memon, A. Memon
Internet of things (IoT) is an emerging field which is increasingly becoming influential instrument in daily life. It endeavors to provide comfort and easiness in doing day to day activities in life. Moreover, it has increased the effectiveness of tasks by reducing the time span of the activity and augmenting its accuracy. It is being done with the help of internet service. IoT connects the activities with internet where it becomes easier to watch and monitor the process and the progress of the activity. Internet, the most important phenomenon of the 21st century, has become a common norm in the society. Thus, IoT is making use of this dynamic feature of human innovation to add more innovative techniques to human lives. Besides all these innovation, human race has been subject to daunting and detrimental challenges which are putting its survival at risk. The problem of accumulating garbage is the most important one. The gigantic amount of waste material is also a big threat to climate of the earth. It is sine qua non to have a special mechanism to deal with the hectic task of collecting and transporting garbage in cities, however, recycling is another dimension of this huge problem. The focus of this research is to come up with a remedy for the problem of ever-increasing garbage. Here, an IoT based costeffective system has been developed. It has the capability to monitor the garbage in real time by using smart technology with the help of WeMos and Ultrasonic sensors. This system makes use of electronic devices and ThingSpeak platform to minimize the expenditures and time duration in the collection and transportation of the waste. This concept is unique in itself as it makes garbage bins able to communicate their status, periodically, to the authorities. This data can be seen on internet and it is not bounded by any specific location as internet is a global phenomenon and so do the proposed system.
物联网(Internet of things, IoT)是一个新兴领域,正日益成为影响人们日常生活的重要工具。它努力在日常生活活动中提供舒适和舒适。此外,它还通过减少活动的时间跨度和提高其准确性来提高任务的有效性。这是在互联网服务的帮助下完成的。物联网将活动与互联网连接起来,使其更容易观察和监控活动的过程和进展。互联网作为21世纪最重要的现象,已经成为社会的普遍规范。因此,物联网正在利用人类创新的这种动态特征,为人类生活增添更多创新技术。除了这些创新之外,人类也面临着严峻而有害的挑战,威胁着人类的生存。堆积垃圾的问题是最重要的一个。大量的废弃物对地球的气候也是一个巨大的威胁。有一个特殊的机制来处理城市垃圾收集和运输的繁重任务是必要的,然而,回收是这个巨大问题的另一个方面。这项研究的重点是为日益增加的垃圾问题提出解决办法。在这里,基于物联网的成本效益系统已经开发出来。它利用WeMos和超声波传感器的智能技术,可以实时监控垃圾。该系统利用电子设备和ThingSpeak平台,最大限度地减少废物收集和运输的费用和时间。这个概念本身是独一无二的,因为它使垃圾箱能够定期向当局通报其状态。这些数据可以在互联网上看到,它不受任何特定位置的限制,因为互联网是一种全球现象,所提出的系统也是如此。
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引用次数: 2
期刊
2020 3rd International Conference on Computing, Mathematics and Engineering Technologies (iCoMET)
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