July 2019最新文献_第3页

High Gain DC-DC Converter with Enhanced Adaptive MPPT for PV Applications 高增益DC-DC变换器与增强自适应MPPT的光伏应用

July 2019 Pub Date : 2019-07-01 DOI: 10.22581/muet1982.1903.02

Suvetha Poyyamani Sunddararaj, Seyezhai Ramalingam

{"title":"High Gain DC-DC Converter with Enhanced Adaptive MPPT for PV Applications","authors":"Suvetha Poyyamani Sunddararaj, Seyezhai Ramalingam","doi":"10.22581/muet1982.1903.02","DOIUrl":"https://doi.org/10.22581/muet1982.1903.02","url":null,"abstract":"The increasing demand for electricity has pushed more effort to focus on renewable energy sources to satisfy the consumer. The renewable energy sources are playing a major role in the generation of electricity. Out of all the renewable energy sources, solar has emerged as one of the best sources of energy since it is clean, inexhaustible and eco-friendly. However, the voltage generated by the solar cell is not sufficient for any consumer load and it is also variable. Therefore, it is necessary to implement DCDC converters for regulating and improving the output voltage of the solar panel. In order to extract the maximum output from the PV (Photovoltaic) panel, a comparative analysis of various MPPT (Maximum Power Point Tracking) algorithms is proposed in this paper. The proposed enhanced adaptive P&O (Perturb and Observe) algorithm is modeled and implemented with a high gain DC-DC converter. The converter investigated in this paper consists of a single power electronic switch (MOSFET) for its operation, which leads to reduction of switching and conduction losses. The proposed converter has less ripple content and a high conversion ratio. A simulation study of the proposed power electronic converter powered by PV source is carried out in MATLAB/SIMULINK and the results are validated using an experimental setup.","PeriodicalId":17719,"journal":{"name":"July 2019","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85284837","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

Heritage at Stake: Discourse Concerning the Causes of Damages Occurred to the Historic Hostel Structures Built in British Era in Karachi 岌岌可危的遗产:关于卡拉奇英治时期历史旅舍结构受损原因的论述

July 2019 Pub Date : 2019-07-01 DOI: 10.22581/muet1982.1903.23

T. Soomro, M. A. Soomro, H. Kanwal

{"title":"Heritage at Stake: Discourse Concerning the Causes of Damages Occurred to the Historic Hostel Structures Built in British Era in Karachi","authors":"T. Soomro, M. A. Soomro, H. Kanwal","doi":"10.22581/muet1982.1903.23","DOIUrl":"https://doi.org/10.22581/muet1982.1903.23","url":null,"abstract":"Karachi being the first born city of the colonial architecture in Sindh Pakistan has the honor of housing very important and diverse ornamental architectural master pieces. Along with the commercial nucleus; Karachi emerged as a regional educational hub after the partition of the Indian subcontinent in 1947 with several hostel structures and studio apartments. These structures are among the better examples of the pre-colonial and post-colonial architectural influence in the region. Few of them (still surviving) are incorporated in the national list of protected heritage under Sindh Cultural Heritage Preservation Act 1994. This research paper is focused on “the lost importance of the three different hostel (boys’ hostels only) premises in the historic core of the city of Karachi”. Despite possessing similar functions in the past and having the same status of the declared protected heritage at present, each of them has different use and conservation status at present. None of the buildings have endured the original function. This research focuses the reasons of the non-continuation of the original function and the impairments caused to the buildings due to this reason. Methodology followed for the research includes analysis of available archives, physical observation, photographic documentation and interviews with the local inhabitants of the neighborhood. The results and the findings of this research portray that eroding hostel culture has subjected those structures to slow and painful death of their original purpose. These buildings, once popular in the area, are now fading fast and perhaps will cease to exist in the near future unless the immediate precautionary measures are taken. The main conclusion drawn in this paper is that “it is important to preserve those historic premises as they are of significant historic character that remained associated with a number of key political and social personalities of the region. Moreover, they play a vital role in the general architectural value of the region”.","PeriodicalId":17719,"journal":{"name":"July 2019","volume":"16 6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82883758","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

Dig deep for Lyell’s notebooks 深挖莱尔的笔记本

July 2019 Pub Date : 2019-07-01 DOI: 10.1144/geosci2019-032

引用次数: 0

Economically Effective and Intelligently Responsive Home Energy Management System 经济有效和智能响应的家庭能源管理系统

July 2019 Pub Date : 2019-07-01 DOI: 10.22581/muet1982.1903.06

M. Mushtaq, Asif Siddiq, M. Tariq, Akbar Ali, Anum Zahra

{"title":"Economically Effective and Intelligently Responsive Home Energy Management System","authors":"M. Mushtaq, Asif Siddiq, M. Tariq, Akbar Ali, Anum Zahra","doi":"10.22581/muet1982.1903.06","DOIUrl":"https://doi.org/10.22581/muet1982.1903.06","url":null,"abstract":"Energy management in home is one of the major issue now-a-days. There are different types of load like shiftable, non-shiftable, seasonal loads and auxiliary loads. In this research article, an energy management system is proposed for home which helps to schedule different loads on the basis of their types and price. It will help to minimize the cost of electricity by shifting load from peak time to off peak time. Emission will be minimized by charging penalty by adopting multi-objective optimization. Each source of energy has its own price of penalty with respect to time. Penalty is charged to minimize the use of sources like commercial supply and diesel generators which emits hazardous gases. In proposed model, user will get electricity from commercial supply, diesel generators and solar panels to provide continuous supply of electricity to fulfill the energy demand. The shiftable loads will be shifted from peak time to off peak time and higher price source to lower price source to minimize the overall price. In this research, we have proposed an EEIR (Economically Effective and Intelligently Responsive) HEMS (Home Energy Management System) by solving multi-objective optimization problem from BILP (Binary Integer Linear Programming) using branch and bound algorithm.","PeriodicalId":17719,"journal":{"name":"July 2019","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80295886","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

It’s time to take notice of sand 是时候注意沙子了

July 2019 Pub Date : 2019-07-01 DOI: 10.1144/geosci2019-035

引用次数: 0

Distant Thunder: Behind every good man... 远方雷声:在每个好人的背后……

July 2019 Pub Date : 2019-07-01 DOI: 10.1144/geosci2019-036

引用次数: 0

An Efficient Computer-Aided Diagnosis System for the Analysis of DICOM Volumetric Images DICOM体积图像分析的高效计算机辅助诊断系统

July 2019 Pub Date : 2019-07-01 DOI: 10.22581/muet1982.1903.24

Qoseen Zahra, M. Malik, Naila Batool

{"title":"An Efficient Computer-Aided Diagnosis System for the Analysis of DICOM Volumetric Images","authors":"Qoseen Zahra, M. Malik, Naila Batool","doi":"10.22581/muet1982.1903.24","DOIUrl":"https://doi.org/10.22581/muet1982.1903.24","url":null,"abstract":"Medical images are an important source of diagnosis. The brain of human analysis is now an advanced field of research for computer scientists and biomedical physicians. Services provided by the healthcare units usually vary, the quality of treatment provided in the urban and rural generally not same. Unavailability of medical equipment and services can have serious consequences in patient disease diagnosis and treatment. In this context, we developed. MRI (Magnetic Resonance Imaging) based CAD (Computer Aided Diagnosis) system which takes MRI as input and detects abnormal tissues (Tumors). MRI is the safe and well reputed imaging methodology for prediction of tumors. MRI modality assists the medical team in diagnosis and proper treatment plan (Medication/Surgery) of different types of abnormalities in the soft tissues of the human body. This paper proposes a framework for brain cancer detection and classification. The tumor is segmented using a semi-automatic segmentation algorithm in which the threshold values selection for head and cancer regions are premeditated automatically. Segmented tumors are further sectioned into malignant and benign using SVM (Support Vector Machine) classifier. Detailed experimental work indicates that our proposed CAD system achieves higher accuracy for the analysis of brain MRI analysis.","PeriodicalId":17719,"journal":{"name":"July 2019","volume":"83 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75169014","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

Factors Affecting Characteristic Length of the Combustion Chamber of Liquid Propellant Rocket Engines 影响液体火箭发动机燃烧室特性长度的因素

July 2019 Pub Date : 2019-07-01 DOI: 10.22581/muet1982.1903.16

Tajwali Khan, I. Qamar

引用次数: 3

Routine of Encryption in Cognitive Radio Network 认知无线网络中的加密程序

July 2019 Pub Date : 2019-07-01 DOI: 10.22581/muet1982.1903.07

Asif Raza, Muhammad Tanveer Meeran, Muizzud Din

引用次数: 0

Identifying the Wasted Spaces within Hospital Buildings in Pakistan 确定巴基斯坦医院建筑物内被浪费的空间

July 2019 Pub Date : 2019-07-01 DOI: 10.22581/muet1982.1903.22

J. Shaikh, K. M. Brohi, S. Qureshi

{"title":"Identifying the Wasted Spaces within Hospital Buildings in Pakistan","authors":"J. Shaikh, K. M. Brohi, S. Qureshi","doi":"10.22581/muet1982.1903.22","DOIUrl":"https://doi.org/10.22581/muet1982.1903.22","url":null,"abstract":"The built environment of hospital buildings are generally not accepted to be pleasant. In the design of healthcare facility, it is quite important that its design, spatial arrangement and areal distribution must respond to curative needs of people so as the outcome emerge in the form of healing environment in the physical spaces.This kind of healing environment is quite adequately available in the developed countries of the global north. However; in developing countries of the global south like Pakistan, the healing environment in healthcare facilities is neither documented nor evident in any available published literature. Whereas, it needs to be well documented and analyzed. Thus, this study aims to identify the healing environment in two selected hospital buildings in Pakistan that is ICP (Peshawar Institute of Cardiology) and FCP (FC Hospital Peshawar) by determining the percentage of wasted spaces within the building. The selected buildings are analyzed from the following aspects; circulation pattern in the hospital, accessibility, connectivity and barrier free movement within buildings, along with the walkability status of over stressed staff inside the hospital building while navigating, functionality of the schematic designs, the problem of the users concerning repetitiveness in their circulation pattern and the way to increase the efficiency of spaces, their spread and flow in the hospital building. In general, three key factors were investigated in this study, therefore, design determinents, areal distribution and adequate spatial organization. In this regard, total eight design determinants were investigated, i.e. entry, parking, waiting area, connectivity, visibility, walkability, accessibility, and way finding. Study approached the spatial simulation method therefore 3M analysis which is a Japanese model referred as Muda (waste), Muri (over burden), Mura (unevenness) based on the Kaizen theory for eliminating wasted spaces from Hospital buildings. Based on the findings and through the approached tools, the waste spaces within the hospital buildings were removed up to 40%.","PeriodicalId":17719,"journal":{"name":"July 2019","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83200219","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