4,083 research outputs found
Probabilistic modeling of electric vehicle charging pattern in a residential distribution network
No full textIt has been recognized that an increased penetration of electric vehicles (EVs) may potentially alter load profile in a distribution network. Charging pattern of EVs and its corresponding electrical load pattern may be assessed and quantified by using either a deterministic method or stochastic approach. However, deterministic method does not account for stochastic nature of EV users which affects the load pattern and of stochastic nature of grid condition. Thus, a stochastic method is applied to develop a probabilistic model of EVs charging pattern that takes into account various factors such as vehicle class, battery capacity, state of charge (SOC), driving habit/need, i.e. involving trip type and purpose, plug-in time, mileage, recharging frequency per day, charging power rate and dynamic EV charging price under controlled and uncontrolled charging schemes. The probabilistic model gives EV charging pattern over a period of day for different months to represent the load pattern during different seasons of a year. The presented model gives a rigorous estimation of EV charging load pattern in a distribution network which is considered important for network operators
Modeling of a Photovoltaic-Powered Electric Vehicle Charging Station with Vehicle-to-Grid Implementation
No full textThis paper is aimed at modelling of a distinct smart charging station for electric vehicles (EVs) that is suitable for DC quick EV charging while ensuring minimum stress on the power grid. Operation of the charging station is managed in such a way that it is either supplied by photovoltaic (PV) power or the power grid, and the vehicle-to-grid (V2G) is also implemented for improving the stability of the grid during peak load hours. The PV interfaced DC/DC converter and grid interfaced DC/AC bidirectional converter share a DC bus. A smooth transition of one operating mode to another demonstrates the effectiveness of the employed control strategy. Modelling and control of the different components are explained and are implemented in Simulink. Simulations illustrate the feasible behaviour of the charging station under all operating modes in terms of the four-way interaction among PV, EVs and the grid along with V2G operation. Additionally, a business model is discussed with comprehensive analysis of cost estimation for the deployment of charging facilities in a residential area. It has been recognized that EVs bring new opportunities in terms of providing regulation services and consumption flexibility by varying the recharging power at a certain time instant. The paper also discusses the potential financial incentives required to inspire EV owners for active participation in the demand response mechanism
On the Achievable Diversity-Complexity Tradeoffs of Joint Network-Channel Coded Cooperative Communication
No full textIn this paper, a novel mathematical framework for the analysis and optimization of Joint-Network - Channel Coded Diversity (JNCCD) protocol is presented. The analysis is applicable to relay - aided protocols based on the error propagation model, which rely on appropriately designed diversity combining demodulators at the destination. Wireless networks with an arbitrary number of sources and relays are considered. Arbitrary multilevel modulation schemes and network codes constructed over Galois Field (GF) are analyzed and JNCCD protocols are investigated. Our results show that if the modulation order is smaller than the Galois field, we are still able to achieve the higher diversity order with lower decoding complexity
Deep Characterization of SARS-CoV-2: An Overview
No full textThe coronavirus epidemic has become one of the major health concerns all over the world recently. Like other strains of coronavirus, this strain also spreads through a droplet-based transmission that is the main cause of its worldwide spread. Several trials of antiviral medicines related to the control of the virus have already begun globally but still one of the main problems is the lack of a viable treatment option. An extensive amount of research is still taking place to organize the data associated with genomics and proteomics of its original strain SARS-CoV-2 alongside other mutant strains. This review summarizes the related up-to-date research that is going on the structural organization of the genome and proteome of the virus.
*Corresponding Author: Ehsan Ul Haq; Email: [email protected]; [email protected]
Please cite this article as: Ul Haq E. Deep Characterization of SARS-CoV-2: An Overview. Arch Med Lab Sci. 2021;7:1-6 (e2). https://doi.org/10.22037/amls.v7.3361
A novel and collaborative network channel coded mobile communication architecture
No full textThis paper presents a novel algebraic framework of collaborative network channel coding scheme in a network with multiple-access relay channel. The proposed scheme helps reduce the computational complexity while enhancing energy efficiency of the wireless network. The devised scheme is intended for practical scenarios where channels exhibit various fading conditions over all the wireless links. We use network coding at the relay to give diversity boost at the receiver with lesser number of transmitted signals and lesser energy consumption. The setup demonstrates improved performance that is instrumental for the effective use of joint network channel coding (JNCC) for practical wireless networks. We further present a performance metric Energy Efficiency for the better performance evaluation
The Concept of Land Ownership in Islam and Poverty Alleviation in Pakistan
No full textLand ownership—in its ethico-legal and historical manifestations, reflects the importance of being a politico-economic institution. In the process of its development, it includes various heterogeneous elements of different systems of ownership. With the growth of the Ummah, the principles of laws of ownership represent and embody the relations, rights and duties to form the general law of obligations at the state as well as individual level. This is the case of economic and legal theory, regarding the ownership of land with implicative infrastructure to build social welfare institutions of Islam. It is generally and basically have been ordained that according to the teachings of Islam, Real ownership belongs to Allah Almighty. Man being the vicegerent holds property in trust for which he is accountable to him in accordance with the clearly laid down economic philosophy of Islam. Ownership of man is a concept alien to Islam as it belongs to Allah Almighty only.
فضل حق خير آبادي و إسهامه في الرثاء الشيخ: AL- SHAIKH FAZL-E-HAQ KHAIR ABADI AND HIS CONTRIBUTION TO ELEGY
No full textFazl-e-Haq Khair Abadi is known for his contribution in the field of Sciences of logic, Philosophy, theology and Sufism. He made huge literary contribution by merging Arabic language in his works along with numerous kinds of literature. He is an author of several books written on many topics of Islamic sciences and poetry like Hamd, Naat and Elegy (Martia). This article predominately delivers contribution of Fazl-e-Haq Khair Abadi, a prestigious person of subcontinent, his life and services particularly Arabic Elegy writing. He wrote elegy about Faiz-ul-allah Khan, His teachers and close friends and the most prominent elegy of him was on India after the British invasion
On flatness-based control for series-connected VSC for voltage dip mitigation
No full textThe grid connected series converter is a custom
power device that is mainly used for mitigation of voltage sags.
In this paper a novel direct flatness-based control (FBC) in
cascade configuration, constituted by an outer voltage and an inner
current controller, is presented. It can absorb and inject active
and reactive power into the grid. Simulation model includes the
practical limitation of voltage source converter output voltage and
computational delay. Then, the simulations results for the FBC
under balanced voltage dips are presented and compared with
traditional proportional integral controller. Finally, the sensitivity
analysis of the FBC for grid frequency, phase angle jump and
inaccurate knowledge of system parameters are presented
Growth and Poverty in Pakistan: Implications for Governance
No full textAccording to the Economic Surveys, Pakistan’s real GDP has grown at an average annual rate of 6.8 percent in the 1960s, 4.8 percent in the 1970s, 6.5 percent in the 1980s and 4.7 percent in the 1990s. However, that did not seem to have mitigated poverty as parallel to this growth the number of poor also kept swelling. Although different estimates put number of poor in Pakistan around 50 million, the actual could be more [Ahmad (2001)]. The average growth rates in the first halfcentury of Pakistan have been around 2 percent [Hasan (1997)]. It is pertinent to state that this discussion paper is not an attempt to challenge the figures either of the growth rates or the numbers of the poor in Pakistan. This is rather an attempt to understand the correlation of governance with growth on one hand and poverty on the other. It offers conceptual analysis of the concepts and their respective interpretation, explanation, application and ensuing misunderstandings. This paper has also attempted to challenge certain (usual) assumptions and perceptions regarding the role and relationship of growth and governance in reducing poverty in Pakistan. One has pointed out that most of the studies on the subject focus on symptoms and not the causes of poverty. This leads to on one hand growth of poverty, as poverty does not seem to halt despite certain evidence of relatively high growth particularly in 1960s. On the other hand we witness poverty of growth as whatever growth we have had it has hitherto failed either translating into corresponding mitigation of poverty or equitable collective prosperity. This is because there have not been efforts at governance level to ensure equity of impact of growth through adequate distribution mechanisms, sufficient social and human investments leading to education and skill development of women and men, who in turn could benefit from opportunities arising by way of process of economic growth.
1,000 Years After Al- Azhar - A Historic Achievement
No full textThis commemorative publication celebrates the founding of The Aga Khan University (AKU) in 1983, positioning it as a historic continuation of a thousand-year-old tradition of Muslim institutions of higher learning, beginning with Al-Azhar University. The publication features excerpts from Mowlana Hazar Imam’s speech during the Charter Presentation Ceremony, details AKU\u27s mission and vision, outlines early plans for its academic and health sciences components, and includes remarks from President Zia-ul-Haq. It emphasizes AKU’s role as a “Centre of Excellence” and “Muslim international university,” open to all, rooted in Islamic tradition, and committed to innovation in service of the Muslim world and developing nations.https://ecommons.aku.edu/arch_research_publications_secondary-sources/1002/thumbnail.jp
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