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Smart Grids: Channel Modeling for Nb-Plc

Thesis Info

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Author

Masood, Bilal

Program

PhD

Institute

COMSATS University Islamabad

City

Lahore

Province

Punjab

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/7893/1/Thesis_final_submission_3.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727177264

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Future electricity power network must be restructured to improve its e ciency in order to provide all the consumers with exible, cost e ective, reliable and accessible power delivery. Power Line Communications (PLC) is a vital part of Information and Communication Technologies (ICT) within the smart grid (SG). This thesis presents the analysis and modeling of Low Voltage (LV) transmission lines for Narrowband Power Line Communications (NB-PLC) by incorporating the approach of transmission line (TL) theory and developing its Simulink model followed by their results discussion. The thesis also presents the comprehensive eld measurements based analysis which provides a generalized NB-PLC channel model for LV access network in order to deploy Advanced Metering Infrastruc- ture (AMI) within Lahore, Pakistan. This is therst time, such kind ofeld measurements have been carried out in Pakistan. Selective sites foreld mea- surements that include GaddaStadium, Hafeez Center, Kot Lakhpat, Lahore Cantt, Ghaziabad, Township, Wapda Town, Valencia Town and Defense Housing Authority (Phase-V) were allocated by LESCO which took into account all classi - cations of load types within Lahore city. Theeld measurements of allocated sites were performed in the residential (urban and rural), industrial and commercial electricity consumers for the NB-PLC channel modeling of low voltage overhead transmission lines (TLs). On the basis of extensiveeld measurement results, the average attenuation pro le and transfer functions (TFs) are presented. A Simulink model is developed to validate the results obtained fromeld measurements. The analyses of measured and simulated results illustrate a close agreement of channel TFs. This research work proposes an improved, more e cient, and more accurate NB-PLC channel model especially for South Asian countries.
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شرح خواندگی اور معاشی خوشحالی

شرح خواندگی اور معاشی خوشحالی
پڑھو گے، لکھو گے بنو گے نواب
جو کھیلو گے، کُودو گے، ہو گے خراب
خواندن مصدر ہے اور اس کے معنی ومفہوم پڑھنے کے بارے میں ہے۔ اور معاشی خوشحالی سے مراد یہ ہے کہ انسان معاشی لحاظ سے خوش حال ہو، ان کا اٹھنا بیٹھنا، کھانا پینا، سفروحضر ایک معیاری قسم کا ہو، ان کے رہن سہن، چال ڈھال میں ایک پر مسرّت اور خوشحال انسان کی جھلک نمایاں ہو۔ معاشی طور پر خوشحال انسان ہی اپنے بارے، اپنی اولادکے بارے میں، اپنے خویش و اقارب کے بارے میں، اپنے احباب کے بارے میں مثبت سوچ کا حامل ہوسکتا ہے، اور اس معاشی خوشحالی کے لیے ایک انسان کا رشتہ تعلیم سے استوار ہونا انتہائی ناگزیر ہے۔
تعلیم انسان کو ایک عظیم انسان بناتی ہے، ایک صاحب شعور فرد بناتی ہے ،تعلیم سے روشنی میسر آتی ہے، علم ایک ایسا نور اور روشنی ہے جس سے جہالت کے اندھیرے دور ہوتے ہیں، انسان کے دل و دماغ عرفان وآگہی کے نور سے منور ہوتے ہیں ،علم ہی کی بدولت انسان حق و باطل اور خیر وشر میں فرق کرنا سیکھتا ہے۔ علم ہی کی بدولت انسان کی خوابیدہ صلاحیتیں بیدار ہوتی ہیں اورعلم ہی کی وجہ سے انسان کے رہن سہن اور طرزِ زندگی میں تہذیب وشائستگی پیدا ہوتی ہے۔ اس میں تعصب اور تنگ نظری کی بجائے فراخ دلی اور رواداری ، خودغرضی کی بجائے ایثار، غرور ونخوت کی بجائے عجز و انکسار ، حرص اور لالچ کی بجائے صبر و قناعت ، حسد اور نفرت کی بجائے محبت اور اخوت جیسے اوصاف پیدا ہوتے ہیں۔
تعلیم ہی کے ذریعے مرصعّ انسان ہی معاشی خوشحالی کا ضامن ہوتا ہے، اگر کسان پڑھا لکھا ہوگا تو اس کی کھیتی بھی زیادہ ہوگی ، اس کی فصل میں اضافہ...

Awareness about Workplace Harassment among Female Nursing Students and Nursing Staff of a Teaching Hospital in Lahore

Background: Harassment of working women is a common social and human rights problem and healthcare settings are no exception. This unacceptable situation has many avoidable determinants that need preventive measures to ensure, safe and secure working environment for nurses. Objectives: To assess the knowledge and understanding among female nursing students and nursing staff about workplace harassment in a tertiary healthcare facility. Methods: It was a cross-sectional study conducted at Tertiary care hospital Lahore from July to September 2018. Convenient sampling technique was used to collect data. Verbal informed consent of voluntary participants was taken. Anonymity and confidentiality was assured. SPSS version 21 was used for data analysis. The participants (n=80) comprised of senior female nurses students (62.5%) and senior nursing staff (37.5%), aged 18 to 46 years. Results: Awareness about common harassment forms was adequate (81.3%). Adverse effects included mental health problems (83.8%) and low self-esteem (72.5%). A large percentage of nurses (62.5%) intended to report such personal incident to institutional head and 72.5% were willing to accompany victims for such reporting. 77.5% desired arranging informative sessions and holding counseling for victims (78.8%) at workplace. Only 22.5% had vague idea about official protective legal frameworks. Conclusions: Workplace harassment of female workers is quite prevalent but under-reported phenomena in Pakistan. All organizations and institutions must have a harassment policy to protect the females.  

Behavior of Stock Return, Calender Effects and Adaptive Market Hypothesis Ahm : Evidence from Pakistan by Using Historic Data With Special Focus on Gregorian and Islamic Calender

Beyond the traditional verdict of efficiency/inefficiency of market, the current thesis aims to provide additional insights to portray the clear picture of behavior of stock market. Although the previous studies have broadly examined the classical EMH, but there exists no consensus among academicians and researchers whether markets are efficient or not. Earlier studies favor EMH and claim that it holds. However, the recent studies cast a serious doubt by showing a strong evidence against the validity of the EMH. In addition, numerous research studies used a predetermined sample-period to investigate the EMH while ignored the fact that the levels of market efficiency may change/evolve over time. Thus, testing efficiency in previous studies is confined to investigate whether the returns generating process of an asset is stochastic (market efficiency) or deterministic (market inefficiency). In this regard Lo (2004) tries to reconcile both the varying degree of market efficiency and EMH through Adaptive Market Hypothesis (AMH). This theory facilitates the efficiency of capital markets to evolve over time and allows market inefficiencies to co-exist along with market efficiency (EMH). The thesis aims to examine the behavior of stock returns and calendar effects through AMH to identify whether AMH delivers a better depiction of behavior stock return and calendar anomalies than traditional EMH. For the purpose 107 listed companies from Pakistan Stock Exchange (PSX) are selected over the period from 1996 to 2015 to contribute to limited literature available on emerging markets. Similar to the studies of (Urquhart, 2013; Urquhart & Hudson, 2013), five different types of behavior are studied. The data set is divided into 4 equal 5-yearly-subsamples to detect the evolution of market efficiency (through linear & non-linear tests) and calendar effects (through GARCH model & Kruskal-Wallis test). The simultaneous utilization of linear and non-linear methods would probably improve the prediction of market participants. The results of linear & nonlinear tests reveal that firms exhibit significant predictability of returns during certain sub-samples while insignificant in others indicating that returns go under periods of market efficiency and inefficiency thus, consistent with AMH. Similarly, the results of GARCH (1,1) and Kruskal-Wallis test show that behavior of calendar effects fluctuates and goes under periods of predictability and no predictability . Overall, results of study suggest that AMH well elucidates the behavior of stock return and calendar effects than conventional EMH. The findings of the study may helpful to investors to assess the time varying volatility to manage their portfolios, investment decisions and trading strategies at (PSX).