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ECONOMIC EVALUATION OF LED OFFICE LIGHTING USING LCC METHOD

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ECONOMIC EVALUATION OF LED OFFICE LIGHTING USING LCC METHOD

Sexual dimorphism and sex-differential migration of Little Buntings(Emberiza pusilla)at an East Asian stopover site

4th Lighting Conference of China,Japan and Korea

作者： Lee,Min-Wook cho,sook-hyun Kim,Hoon Department of Elecrical and Electronic Engineering Kangwon National University

Recently,LED lighting have often been used in indoor *** has become important to lighting designs for new buildings,to compare plans using several LED *** is also necessary to analyze installation expenses in early stage and operating expenses when conventional lighting installations are replaced with LED lighting as *** these situations,economic evaluations on several lighting designs are performed. As one example of an economic evaluation,the Life Cycle Cost(LCC) method evaluates total cost in each stage(production,use and disposal).This paper includes an economic evaluation on lighting design in several indoor offices and compares lighting installation design plans by lighting design,type of Iuminaires and operations.

关键词： LED office lighting economic evaluation life cycle cost method

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Avian Research 2022年第1期13卷 87-93页

作者： sook-Young cho hyun-Young Nam Se-Young Park Chang-Yong choi Bird Research Center Korea National Park Research InstituteJeonnam58863Republic of Korea Division of Zoology Honam National Institute of Biological ResourcesMokpo58762Republic of Korea School of Biological Sciences College of Natural SciencesSeoul National UniversitySeoul08826Republic of Korea Department of Agriculture Forestry and BioresourcesCollege of Agriculture and Life SciencesSeoul National UniversitySeoul08826Republic of Korea

Sex differences in morphology provide key information for understanding a species'morphological adaptations in relation to the evolution of sexual *** migratory birds,morphological traits have adapted to long-distance travel,and sexual dimorphism is typically related to sex-differential migration *** Buntings(Emberiza pusilla)have one of the longest migrations and are the least dichromatic species among the Emberiza *** this study,we measured sexual size dimorphism and sexual dichromatism of Little Buntings in relation to the spring arrival dates at a stopover site in *** length was the most important predictor for identifying sex;the wings of males were longer than those of *** also had a significantly stronger chestnut color of the head feathers than females,but this color difference was more prominent in the spring than in the *** arrived earlier than females by four *** dates correlated with both size and color,but unlike other bunting species previously studied in the same area,there was no clear sex-differential trend in the relationship between arrival date and morphological *** differences in the degree of sexual dichromatism suggest that chestnut plumage coloration can be used as a social or sexual signal of males in the breeding *** correlation of size and color to early arrival regardless of sex may indicate that a preference for assortative mating exists or that a sex-differential migration strategy is not clearly defined in the early stages of northward *** findings on the sexual dimorphism of Little Buntings provide insight into the evolution of the sex-differential migration of buntings in the East Asian Flyway.

关键词： Digital photography Emberiza pusilla Little Bunting Protandrous migration Sexual dichromatism Sexual dimorphism

chosen-Ciphertext Attack Secure Public-Key Encryption with Keyword Search

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Computers, Materials & Continua 2022年第10期73卷 69-85页

作者： hyun sook Rhee Samsung Electronics Co.Ltd. Suwon-si16677Korea

As the use of cloud storage for various services increases,the amount of private personal information along with data stored in the cloud storage is also *** remotely use the data stored on the cloud storage,the data to be stored needs to be encrypted for this ***“searchable encryption”is enable to search on the encrypted data without any decryption,it is one of convenient solutions for secure data management.A public key encryption with keyword search(for short,PEKS)is one of searchable *** et *** defined IND-CCA security for PEKS to enhance it’s security and proposed consistent IND-CCA secure PEKS based on the“robust”ANO-CCA secure identity-based encryption(IBE).In this paper,we propose two generic constructions of consistent IND-CCA secure PEKS combining(1)a hierarchical identity based encryption(for short,HIBE)and a signature scheme or(2)a HIBE,an encapsulation,and a message authentication code(for short,MAC)*** generic constructions identify that HIBE requires the security of a signature or a MAC as well as the weaker“ANO-CPA security(resp.,IND-CPA security)”of HIBE than“ANOCCA security(resp.,IND-CCA security)”of IBE required in for achieving IND-CCA secure(resp.,consistent)***,we prove that our generic constructions satisfy IND-CCA security and consistency under the security models.

关键词： Searchable encryption public-key encryption with keyword search chosen ciphertext security data privacy

Improvement of uniformity in cultivation environment and crop growth rate by hybrid control of air flow devices

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Journal of Central South University 2015年第12期22卷 4702-4708页

作者： BAEK Min-Seon KWON sook-Youn LIM Jae-hyun Department of Computer Science and Engineering Kongju National University Green Energy Technology Research Center Kongju National University

A complete control type plant factory has high efficiency in terms of cultivation area by constructing vertical multiple layered cultivation ***,it has a problem of irregular crop growth due to temperature deviation at upper and lower beds and increases in energy consumption by a prolonged cultivation *** this work,air flow rate inside a facility was improved by a hybrid control of air flow devices like air conditioning and air circulation fan with an established wireless sensor network to minimize temperature deviations between upper and lower beds and to promote crop *** performance of proposed system was verified with an experimental environment or Case A wherein air conditioning device was operated without a control algorithm and Case B wherein air conditioning and circulation fans were alternatively operated based on the hybrid control *** planting leafy vegetables under each experimental condition,crops were cultivated for 21 *** a result,Case B wherein AC(air conditioning) and ACF(air-circulation fan) were alternatively operated based on the hybrid control algorithm showed that fresh mass,number of leaves,and leaf length for the crops grown were increased by 40.6%,41.1%,and 11.1%,respectively,compared to Case A.

关键词： air flow devices hybrid control cultivation environment uniformity growth rate

Laser capture microdissection: from its principle to applications in research on neurodegeneration

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Neural Regeneration Research 2015年第6期10卷 897-898页

作者： sook hyun Chung Weiyong Shen Macula Research Group Save Sight Institutethe University of Sydney

History and the principle of laser capture microdissection （LCM）： LCM, also known as laser microdissection and pressure catapulting, is one of the most powerful and useful techniques in various research areas where isolation of heterogeneous cell population is required. The first use of laser as a cell operation method, was originated in early 1920s （Gilbrich-Wille, 2013）, and it became widely used as a microsurgical tool ill early 1960s. In the need of extremely small tissue isolation, laser beam of LCM has been modified and developed over several decades from Ultraviolet （UV） laser beam to high-energy nitrogen, infrared and carbon dioxide lasers （Gilbrich-Wille,

关键词： cell LCM from its principle to applications in research on neurodegeneration

Repurposing ibrutinib:therapeutic effects and implications for translational approaches in Alzheimer’s disease

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Neural Regeneration Research 2023年第10期18卷 2194-2195页

作者： hyun-ju Lee Hyang-sook Hoe Department of Neural Development and Disease Korea Brain Research Institute(KBRI)DaeguSouth Korea Department of Brain and Cognitive Sciences Daegu Gyeongbuk Institute of Science&TechnologyDaegu 42988South Korea

Alzheimer’s disease(AD)is the most prevalent neurodegenerative disease,and the number of patients with AD is estimated to double by 2060(Alzheimer’s Association,2022).The AD mortality rate has increased by 145%over the last decade,the largest increase among the ten leading causes of death in the US(Alzheimer’s Association,2022).

关键词： Alzheimer mortality therapeutic

Ungraded Matrix Factorizations as Mirrors of Non-orientable Lagrangians

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Acta Mathematica Sinica,English Series 2024年第1期40卷 26-42页

作者： Lino AMORIM Cheol-hyun cho Department of Mathematics Kansas State University138 Cardwell Hall1228 N.17th StreetManhattanKS 66506USA Department of Mathematical Sciences Research Institute of MathematicsSeoul National UniversitySan 56-1ShinrimdongGwanakguSeoul 47907South Korea

We introduce the notion of ungraded matrix factorization as a mirror of non-orientable Lagrangian *** ungraded matrix factorization of a polynomial W,with coefficients in a field of characteristic 2,is a square matrix Q of polynomial entries satisfying Q^(2)=W·*** then show that non-orientable Lagrangians correspond to ungraded matrix factorizations under the localized mirror functor and illustrate this construction in a few *** main example is the Lagrangian submanifold RP^(2)⊂CP^(2)and its mirror ungraded matrix factorization,which we construct and *** particular,we prove a version of Homological Mirror Symmetry in this setting.

关键词： Mirror symmetry non-orientable Lagrangian submanifold matrix factorization

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Development of Ubiquitous Simulation Service Structure Based on High Performance Computing Technologies

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Journal of Materials Science & Technology 2008年第3期24卷 374-378页

作者： Sang-hyun cho Jeong-Kil choI Center For e-Design KITECH7-47Songdo-DongYeonsu-Ku

The simulation field became essential in designing or developing new casting products and in improving manufacturing processes within limited time, because it can help us to simulate the nature of processing, so that developers can make ideal casting designs. To take the prior occupation at commercial simulation market, so many development groups in the world are doing their every effort. They already reported successful stories in manufacturing fields by developing and providing the high performance simulation technologies for multipurpose. But they all run at powerful desk-side computers by well-trained experts mainly, so that it is hard to diffuse the scientific designing concept to newcomers in casting field. To overcome upcoming problems in scientific casting designs, we utilized information technologies and full-matured hardware backbones to spread out the effective and scientific casting design mind, and they all were integrated into Simulation Portal on the web. It professes scientific casting design on the NET including ubiquitous access way represented by ＂Anyone, Anytime, Anywhere＂ concept for casting designs.

关键词： Parallel computation Message passing interface (MPI) Shared memory processing (SMP) Clustering Ubiquitous

Evaluation of ring surfaces with several coatings for friction,wear and scuffing life

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中国有色金属学会会刊：英文版 2009年第4期19卷 992-996页

作者： Dae-hyun cho Young-Ze LEE School of Mechanical Engineering Sungkyunkwan University

Friction and wear of the sliding components in an automobile cause an increase in both fuel consumption and *** engine components involved with sliding contact are all susceptible to scuffing failure at some points during their operating ***,it is important to evaluate the effects of various surface coatings on the tribological characteristics of the piston ring and cylinder block surface of a diesel *** and scuffing tests were conducted using a friction and wear measurement of the piston ring and cylinder block in a low friction diesel *** frictional forces,wear amounts and cycles to scuffing in the boundary lubricated sliding condition were measured using the reciprocating wear *** tester used a piece of the cylinder block as the reciprocating specimen and a segment of the piston ring material as the fixed *** coatings on the ring specimen were used,such as DLC,TiN,Cr-ceramic and TiAlN,in order to improve the tribological characteristics of the *** coefficients of friction were monitored during the tests,and the wear volumes of the piston ring surfaces with various coatings were *** results show that the DLC coating exhibits better tribological properties than the other *** graphite structure of this coating is responsible for the low friction and wear of the DLC *** TiN and DLC coatings show better scuffing resistance than the other *** TiN and Cr-ceramic coated rings show good wear resistance and high friction.

关键词：涂层表面摩擦评价生活划伤磨损