• International Journal of Internet, Broadcasting and Communication
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• 제15권4호
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• pp.166-171
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• 2023

With significant advancements in the field of artificial intelligence, many novel algorithms and technologies have emerged. Currently, AI painting can generate high-quality images based on textual descriptions. However, it is often challenging to control details when generating images, even with complex textual inputs. Therefore, there is a need to implement additional control mechanisms beyond textual descriptions. Based on ControlNet, this passage describes a combined utilization of various local controls (such as edge maps and depth maps) and global control within a single model. It provides a comprehensive exposition of the fundamental concepts of ControlNet, elucidating its theoretical foundation and relevant technological features. Furthermore, combining methods and applications, understanding the technical characteristics involves analyzing distinct advantages and image differences. This further explores insights into the development of image generation patterns.

• Journal of applied mathematics & informatics
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• 제42권3호
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• pp.471-481
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• 2024

In this paper, the concept of D-sets will be applied to create D-lindelöf spaces, a new type of topological space covering the property. This is performed by using a D-cover, which is a special type of cover. The primary purpose of this work is to introduce the principles and concepts of D-lindelöf spaces. We look into their properties as well as their relationships with other topological spaces. The basic relationship between D-lindelöf spaces and lindelöf spaces, as well as many other topological spaces, will be given and described, including D-compact, D-countably compact, and D-countably lindelöf spaces. Many novel theories, facts, and illustrative and counter-examples will be investigated. We will use several informative instances to explore certain of the features of the Cartesian product procedure across D-lindelöf spaces as well as additional spaces under more conditions.

• Journal of applied mathematics & informatics
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• 제42권1호
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• pp.123-137
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• 2024

In this paper, Power fuzzy graphs is newly introduced by allotting fuzzy values on power graphs in such a way that the newly added edges, has the edge membership values between a closed interval which depends on vertex membership values and the length of the added edges. Power fuzzy subgraphs and total power fuzzy graphs are newly defined with properties and some special cases. It is observed that every power fuzzy graph is a fuzzy graph but the converse need not be true. Edges that are incident to vertices with the least vertex membership values are retained in the least power fuzzy subgraph. Further, the application of these concepts in real life time has been presented and discussed using power fuzzy graph model.

• 한국전자거래학회지
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• 제14권2호
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• pp.95-116
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• 2009

지식 재사용 측면에서 기존의 온톨로지를 재사용할 수 있다면 많은 자원을 절약할 수 있을 것이다. 그러나 기존의 온톨로지를 활용하기 위해서는 보다 발전된 온톨로지 검색 기능이 요구된다. 현재까지 이루어진 관련 연구들에서는 주로 렉시컬 매칭기법을 사용하여 온톨로지를 검색하였다. 그러나 의미적 측면에서 문제점이 있으므로 본 연구에서는 관계의 의미적 유사성에 기반한 온톨로지 선택 랭킹 모델을 제안한다. 본 연구는 개념간 계층 구조와 관계를 온톨로지 검색에 이용함으로써 온톨로지의 선택 랭킹을 효과적이며 실질적으로 개선하였다. 또한 실험을 통해 연구 모델의 결과와 선행 연구의 결과, 온톨로지 전문가의 랭킹 결과를 비교 분석하고 연구 모델의 타당성을 검증하였다. 본 연구 결과는 온톨로지 검색 연구를 이론적으로 발전시켰을 뿐 아니라 실무적인 측면에서 실무자들이 온톨로지를 쉽게 찾아 재사용할 수 있도록 한다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 추계학술대회
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• pp.1006-1009
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• 2015

3상 4선식 배전계통에서 특정 수용가가 어떤 변압기로부터 공급되는지를 결정하기 위한 전력선 통신방식을 활용한 식별 방법이 제안된다. 이러한 배전계통에서 전력선 통신 신호의 전달 특성을 분석하기 위한 변압기, 3상 선로, 부하 등에 대한 수치해석 모델을 기술한다. 배전선로에 고주파 전력신호를 주입하여 분석 한 결과 고주파 신호는 배전선에서 전달 능력에 한계 능력을 갖는다. 보통 배전계통의 전력 변압기는 그러한 고주파 신호의 전달을 차폐하게 된다. 이러한 제안된 전송제한 방법을 사용하여 변압기를 식별하는데 적용한다. 새로운 형태의 전력선 변압기 식별시스템이 설계 및 구현된다. 시스템은 전력선 통신 모듈을 바탕으로 송수신기로 구성된다. 이론적 개념을 검증하기 위해서 일반 상업용 건물에서 실험이 행하여진다. 또한 MATLAB Simulink 시뮬레이터를 사용하여 개념에 대한 이해를 위한 시뮬레이션이 수행된다.

• Journal of Preventive Medicine and Public Health
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• 제55권5호
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• pp.415-423
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• 2022

Economic evaluations in the healthcare are used to assess economic efficiency of pharmaceuticals and medical interventions such as diagnoses and medical procedures. This study introduces the main concepts of economic evaluation across its key steps: planning, outcome and cost calculation, modeling, cost-effectiveness results, uncertainty analysis, and decision-making. When planning an economic evaluation, we determine the study population, intervention, comparators, perspectives, time horizon, discount rates, and type of economic evaluation. In healthcare economic evaluations, outcomes include changes in mortality, the survival rate, life years, and quality-adjusted life years, while costs include medical, non-medical, and productivity costs. Model-based economic evaluations, including decision tree and Markov models, are mainly used to calculate the total costs and total effects. In cost-effectiveness or costutility analyses, cost-effectiveness is evaluated using the incremental cost-effectiveness ratio, which is the additional cost per one additional unit of effectiveness gained by an intervention compared with a comparator. All outcomes have uncertainties owing to limited evidence, diverse methodologies, and unexplained variation. Thus, researchers should review these uncertainties and confirm their robustness. We hope to contribute to the establishment and dissemination of economic evaluation methodologies that reflect Korean clinical and research environment and ultimately improve the rationality of healthcare policies.

• Nuclear Engineering and Technology
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• 제54권7호
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• pp.2395-2407
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• 2022

The sodium-cooled fast reactor is among the innovative nuclear technologies selected in the framework of the development of Generation IV concepts, allowing the irradiation of uranium-plutonium mixed oxide fuels (MOX). A fundamental step for the safety assessment of MOX-fuelled pins for fast reactor applications is the evaluation, by means of fuel performance codes, of the integral thermal-mechanical behaviour under irradiation, involving the fission gas behaviour and release in the fuel-cladding gap. This work is dedicated to the performance analysis of an inner-core fuel pin representative of the ASTRID sodium-cooled concept design, selected as case study for the benchmark between the GERMINAL and TRANSURANUS fuel performance codes. The focus is on fission gas-related mechanisms and integral outcomes as predicted by means of the SCIANTIX module (allowing the physics-based treatment of inert gas behaviour and release) coupled to both fuel performance codes. The benchmark activity involves the application of both GERMINAL and TRANSURANUS in their "pre-INSPYRE" versions, i.e., adopting the state-of-the-art recommended correlations available in the codes, compared with the "post-INSPYRE" code results, obtained by implementing novel models for MOX fuel properties and phenomena (SCIANTIX included) developed in the framework of the INSPYRE H2020 Project. The SCIANTIX modelling includes the consideration of burst releases of the fission gas stored at the grain boundaries occurring during power transients of shutdown and start-up, whose effect on a fast reactor fuel concept is analysed. A clear need to further extend and validate the SCIANTIX module for application to fast reactor MOX emerges from this work; nevertheless, the GERMINAL-TRANSURANUS benchmark on the ASTRID case study highlights the achieved code capabilities for fast reactor conditions and paves the way towards the proper application of fuel performance codes to safety evaluations on Generation IV reactor concepts.

• 영어영문학
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• 제58권6호
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• pp.1119-1142
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• 2012

This article examines how Cuban-American writer Cristina García interweaves all possible experiences of Cubans through Dreaming in Cuban in terms of Bakhtin's concepts of heteroglosssia, hybridization, and the chronotope. In so doing, it reaffirms the applicability of these concepts as tools for interpreting speech genres while reevaluating and reexamining the novel in terms of Bakhtinian narratology. García identifies a sociopolitical cacophony in both America and Cuba from an open-minded perspective, striving to maintain a balance between them despite undesirable experiences with her patriotic mother and individuals in the Miami community where she worked as a journalist. In practice, she projects sociopolitical ideas onto her heroines' depictions, representing their consciousnesses in a process of interaction with others. In particular, García allows her three generations of heroines, Celia del Pino, her daughters Lourdes and Felicia, and her granddaughter Pilar Puente to live as staunchly political figures. In this way, García creates a unique novelistic situation by opposing or juxtaposing all aspects of her heroines and pitting them in a dynamic interaction with their environments. As they repeatedly tease, contradict, refute, and do battle with each other, her heroines expose various problems with the sociopolitical ideologies in both the Cuban and American contexts. García succeeds in her attempt by introducing Bakhtin's model of the "becoming" hero and depicting her heroines in dynamic interaction without her own interference. In particular, the devouring inner monologues of Pilar and her Cuban aunt Felicia are presented as the products of their extraordinarily developed self-consciousnesses, through which García attempts a multilateral approach of showing, rather than telling, her heroines' interactive inner worlds as well as introducing sociopolitical contexts. Generic factors such as epistles, diary entries, and ads copy are hybridized into Celia's and Lourdes' stories, serving the heroines' interactive contexts while filling in the many narrative gaps that result from the approach to Cuban and American history. The Bakhtinian perspective permits the interpretation that this generic hybridization enables García to cover narrative gaps resulting from the expansion of chronotopes.

• 아태비즈니스연구
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• 제14권4호
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• pp.205-216
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• 2023

Purpose - The purpose of this study was to examine the effect of organizational citizenship behavior on unethical pro-organization behavior considering two sub-dimensions of organizational citizenship behavior such as citizenship behavior for individual and citizenship behavior for organization. In addition to this, this study was to identify of the moderating effect of machiavellism. Design/methodology/approach - This study collected 269 sample questionnaires from employees who are working for Korean companies. To examine the hypotheses, this study used hierarchical regression analysis. Findings - First, results showed that there is a significant positive effect of citizenship behavior for organization on unethical pro-organization behavior, but citizenship behavior for individual did not have any significant effect on unethical pro-organization behavior. Second, same with the previous results, machiavellism only had its significant moderating effect on the relationship between citizenship behavior for organization and unethical pro-organizational behavior, not on citizenship behavior for individual. The moderating effect strengthened the positive relationship. Research implications or Originality - Although organizational citizenship behavior and unethical pro-organization behavior are studied many times, but there is no research examining the relationship between these two concepts. these two concepts share the figure that these behaviors are pro-organizational. The only differences between the two is ethical or not. So, this study identified the relationship and moderating effect of machiavellism. In doing so, this study provided novel implications for the researchers of this filed.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2011년도 제41회 하계 정기 학술대회 초록집
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• pp.198-198
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• 2011

Organocatalysis is a relatively new and popular area within the field of chiral molecule synthesis. It is one of the main branches of enantioselective synthesis with enzymatic and organometallic catalysis. In recent years, immense high quality studies on catalysis by chiral secondary amines were reported. These progresses instantly led to different organocatalytic activation concepts, so thousands of researchers from academia and the chemical industry are currently involved in this field and new ideas, new approaches, and creative thinking have been rapidly emerged. Organocatalysts, some of which are natural products, appear to solve the problems of metal catalysts. Compared to metal-based catalysis, they have many advantages including savings in cost, time, and energy, easier experimental procedure, and reduction of chemical waste. These benefits originate from the following factors. First, organocatalysts are generally stable in oxygen and water in the atmosphere, there is no need for special equipments or experimental techniques to operate under anhydrous or anaerobic conditions. Second, organic reagents are naturally available from biological materials as single enantiomers that they are easy and cheap to prepare which makes them suitable for small-scale to industrial-scale reactions. Third, in terms of safety related catalysis, small organic molecules are non-toxic and environmentally friendly. Therefore, the purpose of this research is to develop novel synthetic methods and design for various organocatalyst. Furthermore, it is expected that these organocatalysts can be applied to a variety of asymmetric reactions and study the transition state of these reactions using a metal sulface. Here, we report the synthesis of unprecedented organocatalysts, proline and pyrrolidine derivatives with quaternary carbon center.