Optimal Allocation of Distributed Generation Using Evolutionary Multi-objective Optimization

Pon Ragothama Priya P.,Baskar S.,Tamil Selvi S.,Babulal C. K. 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.2

This paper proposes a new long-term planning methodology for Multi-objective Distributed Generation Placement and Sizing (MO-DGPS) aiming at a minimum energy loss, CO2 emission, overall cost, besides enhancing the system voltage stability and reliability. The MO-DGPS problem has been reformulated to incorporate the uncertainties such as intermittent power generation of renewable DG (RDG), and forced outages of Distributed Generation (DG) units, the cost of reactive power imports from the substation with the conventional DGPS problem description. Moreover, the problem also considers time-varying loads, and load growth. The objective of the proposed modified problem formulation is to identify the optimal DG placement, sizing and the selling price of its generated power to the utility by minimizing the Distribution Companies cost and maximizing the DG Investor’s profits simultaneously, considering various constraints and uncertainties. A fast-elitist Non-dominated Sorting Genetic Algorithm-II has been employed to solve the reformulated MO-DGPS problem. The IEEE 33-Node and practical Tamil Nadu Electricity Board 84-Node radial distribution systems have been utilized as test systems in order to validate the proposed methodology. Performance analysis has been done on the results of a MO-DGPS problem for different combinations of RDG with conventional DG units. The results of these different scenarios have been compared with the results of recent research reports too. Among investigations of various scenarios, it is found that the right combination of biomass and conventional DG units provides better objective values and performance indices, minimum energy loss and CO2 emission.

Liquidated: US/Japan-Chinese Rivalry, Financial Crises, and Explaining Shifts in Hydropower Finance Regimes in the Mekong

Pon Souvannaseng 경남대학교 극동문제연구소 2022 ASIAN PERSPECTIVE Vol.46 No.1

The contemporary US/Japan-Chinese rivalry and tension around dam building in the Mekong region is often mistakenly seen as the US and Japan’s reactive response to recently growing Chinese diplomatic and economic influence in the region. In fact, the United States and Japan have been critical architects of institutional and financial engineering for hydropower development in the Mekong region, which predates involvement by the People’s Republic of China (PRC). The factors and dynamics involved in significant lending regime shifts away from a liberal hydropower finance regime to an export credit driven model premised on Asian economic statecraft is an understudied topic. This article fills part of this gap through a case study of evolving hydro-financing regimes in Lao PDR from the 1970s to the present. The study draws on extensive ethnographic work in Laos, Japan, Thailand, and the United States with local and external political elites, hydro-financing technocrats, and business actors and gains additional insights from analysis of primary firm, institutional, and government documents. The article finds that the role of economic crises and their impact on the relative economic power of hydropower financing regimes as well as their ideational impact on borrower regimes are significant in explaining shifting patterns in lending regime dominance.

An Approach for Stock Price Forecast using Long Short Term Memory

Pon Ramalingam,K.A.Surya Rajeswar,Sudalaimuthu.T International Journal of Computer ScienceNetwork S 2023 International journal of computer science and netw Vol.23 No.4

The Stock price analysis is an increasing concern in a financial time series. The purpose of the study is to analyze the price parameters of date, high, low, and news feed about the stock exchange price. Long short term memory (LSTM) is a cutting-edge technology used for predicting the data based on time series. LSTM performs well in executing large sequence of data. This paper presents the Long Short Term Memory Model has used to analyze the stock price ranges of 10 days and 20 days by exponential moving average. The proposed approach gives better performance using technical indicators of stock price with an accuracy of 82.6% and cross entropy of 71%.

Immediate Partial Breast and Nipple-Areola Complex Reconstruction Using a Superficial Circumflex Iliac Artery Perforator Flap

Gemma Pons,Lucia Sisternas,Jaume Masia Korean Society of Plastic and Reconstructive Surge 2024 Archives of Plastic Surgery Vol.51 No.2

The superficial circumflex iliac artery perforator (SCIP) flap is a versatile flap that has been described for various applications, mostly for lower extremity coverage and head and neck reconstructions. However, there are few publications reporting its use for breast reconstruction, mainly because of its low volume availability. In this article, we present the case of a patient who successfully underwent a partial breast and immediate nipple-areola complex (NAC) reconstruction with an SCIP flap. She had been previously reconstructed with an implant after a nipple-sparing mastectomy, but the NAC turned out to be involved with cancer needing further resection. Our goal with this article, is to introduce a novel concept for addressing partial breast and NAC reconstruction and mostly, to illustrate the importance of an adaptable surgical plan based on every individual case emphasizing the versality of microsurgery for breast cancer reconstruction.

The Logic of Subjection and Circumvention in Charlotte Brontë’s Jane Eyre

Seung Pon Koo 한국영미어문학회 2017 영미어문학 Vol.- No.124

The aim of this essay was to examine the circumventive logic of subjection in Charlotte Brontë’s Jane Eyre. The Victorian classical novel has been lauded as a feminist revolutionary text because it portrays a heroine’s achievement of self-identity and self-assertion against the domination of patriarchy. From Michel Foucault’s theoretical perspective with regard to subjectivity, however, an individual cannot become a subject without the regulatory restrictions of external power. For Jane, the coercive and restrictive powers from the Reeds, Lowood institution, Mr. Rochester, and St. John Rivers contribute to the making of her subjectivity. To borrow Louis Althusser’s terms, the ideological interpellation of those external powers constructs Jane’s soul and her consciousness, although her decisions both to get married to the wounded Mr. Rochester and to sacrifice herself for taking care of him derive from her misconception that her moral and ethical enactments are firmly based on her own self will and her natural promptings as an independent female individual.

A Matrix of Restraint, Libido, and Pleasure in Charles Dickens’s Hard Times

Seung-Pon Koo 새한영어영문학회 2012 새한영어영문학회 학술발표회 논문집 Vol.2012 No.5

Dose-Rate Effects Generated from Repair and Regeneration

이본녕(Pon Nyong Yi),조관호(Kwan Ho Cno),막스리차드(Richard D. Marks. Jr),김재호(Joe Ho Kim) 대한방사선종양학회 1989 Radiation Oncology Journal Vol.7 No.2

Roesch의 생존 방정식속에 세포증식으로 일어나는 생존증가를 가장 일반적 형식으로 포함시킨 식을 유도하고 이식으로부터 저선량률 방사선에만 적용되는 동결과선량식(isoeffect formula)을 유도하였다. 이 저선량률식이 파라메터 하나로 결정해주는 총선량은 Paterson과 Green에 의하여 얻어진 실험 임상결과와 일치한다. 이 파라메터와 선량률효과 사이의 관계의 의의를 논하였다. 또한 고선량률 분절(fractionation) 치료와 동저선량률 계속치료를 연락하는 동결과 선량식을 유도 사용하여, Ellis가 잰 실험결과와 비교하였다. 그 결과, Ellis와 Paterson이 쓴 ‘tolerance'의 표준이 α/β의 비 4 Gy에 해당하는 것임이 밝혀졌다. 그러므로 이들의 ’tolerance'의 표준은 ‘early effect'에만 두고 본것이 아님을 알 수 있다. 개념적인 면에서도, 아래와 같은 새로운 견해가 나올 수 있다. KHT sarcoma의 생존선도(survival curve)에 선량률효과가 보이지 않는 이유로 α/β의 비가 큰점을 들을 수 있다. 이것은 이 survival curve에 어께(shoulder)가 보이지 않는 것으로도 증명이 된다. Pierquin이 선량률에 무관하게 head and neck tumor치료에 같은 총선량을 쓴 것을 정당화시킬 수 있다. A general effect for cell proliferation has been incorporated into Roesch's survival equation (Accumulation Modal). From this an isoeffect formula for the low dose-rate regimen is obtained. The prediction for total doses equivalent to 60 Gy delivered at the constant dose-rate over 7 days agrees well with the dose-time data of Paterson and of Green, when the parameter ratio A/B (≈ αμ/2β where μ is the repair rate) is chosen to be 0.7 Gy/h. When a constant proliferation rate and known facts of division delay are assumed, an isoeffect relation between low dose-rate treatment and acute dose-rate treatment can be derived. This formula in the regimens where proliferation is negligible predicts exactly the data of Ellis that 8 fractions of 5 Gy/day for 7 days are equivalent to continuously applied 60 Gy over 7 days, provided the A/B ratio is 0.7 Gy/h and the α/β ratio is 4 Gy. Overall agreement between the clinical data and the predictions made by the formula at the above parameter values suggests that the biologcal end points used as the tolerance level in the studies by Paterson. Green, and Ellis all agree and they are not entirely the early effects as generally assumed. The absence of dose-rate effects observed in the mouse KHT sarcoma can better be explained in terms of a large value for the A/B ratio. Similarly, the same total dose used independently of the dose-rate to treat head and neck tumors by Pierquin can be justified,

“Is Romola Really Rebellious?: George Eliot’s Romola ”

Seung-Pon Koo 새한영어영문학회 2013 새한영어영문학회 학술발표회 논문집 Vol.2013 No.5

The Restraints of Political Economy and Perverse Libido in Charles Dickens`s Hard Times

( Seung Pon Koo ) 경남대학교 인문과학연구소 2014 人文論叢 Vol.33 No.-

This essay purports to examine how Charles Dickens`s Hard Times depicts the unnatural and tragic relationships between utilitarian political economy and the individuals who are affected by the economic principle in both the private sphere and the public one. Special attention must be paid to the adverse impact of the novel`s character Thomas Gradgrind`s principle of utilitarian education on his children Louisa and Tom in the household. Under the influence of her father`s dogmatic rules, Louisa develops her perverse libido toward her brother Tom as a way of escaping from the restraints and repression imposed upon her, which can be explicated by the Freudian theory of the pleasure principle and perversion. The Gradgrind-Louisa-Bounderby triangular model can elucidate the operation of sexual exchange of Louisa as an economic property negotiated between her father and the industrialist, which can be theoretically supported by Eve Sedgwick`s arguments about triangular transactions between men. The tension between Stephen and Bounderby in the public realm also testifies to the domination of the economic logics of self-help and self-interest over the working-class people, which can be examined through the lens of the Foucauldian theory of governmentality. In contrast, Sissy Jupe`s adherence to fancy and her affectionate sympathy for the few ignored by and alienated from the arithmetic calculation of utilitarianism can serve as an antidote to the ideologies of male-centered political economy.

악 ( 樂 ) 의 연구 ( 국어 · 국문학연구에 있어서의 간지에서 -

구본혁 ( Pon Hyuck Koo ) 한국어교육학회 1965 국어교육 Vol.- No.11