• Title/Summary/Keyword: Scarcity

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A Study on the Consciousness of Dental Technicians about the Courses of Dental Technology Dept., Junior College, Korea (한국(韓國) 치과기공사(齒科技工士)들의 전문대학(專門大學) 치기공과(齒技工科) 교육(敎育)에 대한 의식구조(意識構造) 조사(調査) 연구(硏究))

  • Choi, Un-Jea
    • Journal of Technologic Dentistry
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    • v.19 no.1
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    • pp.63-89
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    • 1997
  • This survey aimed at the analysis of the consciousness of the dental technicians on the college education ; 205 dental technicians who graduated the relavant school answered. Following is the result of the analysis with its ststistcal number. 1. About the time when they chose their major, 84 people(41.1%) answered the prepartion period for the college. And, 74(36.1%) said that they applied on their own thought to their major. The reason why they chose it was first the prosperity expected in the near future, 93(45.4%) replied. 2. 161(78.5%) were satisfied with their college days. On the other hand, the most regretful one those days, 69(33.7%) answered, was the scarcity of the study seminar. 3. About the exercise courses, 120(58.6%) showed dissatisfaction, and 66(32.3%) people of the dissatisfied pointed out the lack of the instruments. 4. The suitable number in a class, 124(60.5%) supported, is 20 heads. The appropriate period of education was said three years by 71(34.6%), four years 53(25.9%) and the extension to the graduate school by 41(20.0%) 5. About the tips for the professors, 147(71.7%) proposed they would research and lecture further more. To the college administration, 116(56.5%) suggested it should accomo-data enough instruments for practicing.

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Adaptation Experiences of Male Students in Nursing Education Programs: A Meta-synthesis Study (간호학과 남학생의 학과 적응에 관한 질적 메타합성 연구)

  • Son, Haeng-Mi;Oh, Seieun;Jang, Hye-Young
    • The Journal of Korean Academic Society of Nursing Education
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    • v.24 no.4
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    • pp.391-405
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    • 2018
  • Purpose: The purpose of this study was to integrate and synthesize findings from qualitative studies exploring male students' experiences of adapting to nursing education programs so as to obtain further understanding of the phenomenon. Methods: The meta-synthesis process was primarily guided by Noblit and Hare's approach, which consists of four stages including searching, appraisal of an individual study's quality, data extraction for analysis, and meta-synthesizing the results. Results: Findings from the literature reviewed were synthesized into six themes: 1) extraordinary choice based on job stability and gender scarcity; 2) unexpected feeling of marginalization as minority far apart from the mainstream; 3) assimilation and negotiation for relational adaptation through perspective shift; 4) fortifying the vision and identity as nursing students by meaning making for adapting to the nursing major; 5) mutual support among colleague male students; and 6) serving in the military as way of hiding out and achieving maturation. Conclusion: The findings illustrate that nursing education programs need practical changes promoting male students' adaptation to the program itself as well as preparation to be a professional nurse in the future.

Artification in Flagship Stores of Luxury Fashion Brands (럭셔리 패션 브랜드의 플래그쉽 스토어에 나타난 예술화)

  • Hwang, Jin-Ju;Yim, Eun-Hyuk
    • Fashion & Textile Research Journal
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    • v.22 no.4
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    • pp.413-431
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    • 2020
  • Luxury fashion brands have begun to aggressively introduce art to justify inherent values such as tradition, craftsmanship, and exclusivity that make it difficult for luxury brands to uphold awe-inspiring atmosphere. Artification refers to a process in which non-artistic factors are transformed into art or artistic category under the influence of artistic thoughts or actions. In addition, the consumption space provided by brands have become important as the importance of substantial shopping experience has increased. Especially, since the artification is actively utilized in flagship stores in the communication interface with consumers. This study uses a literature review and case studies to typify and derive the meaning of the method for artification at a flagship store that effectively conveys brand identity and value. The types of artification at a luxury fashion brand flagship store are divided into pursuing brand permanency and maintaining brand exclusivity that also provides a new value of permanency like a work of art to a luxury fashion brand. Basic values, such as scarcity are declining, reviving and justifying the value threatened by the popularization of luxury.

Comparison of Spectrum Sensing Algorithms for Cognitive Radio Systems (인지무선통신 시스템을 위한 스펙트럼 센싱 알고리즘의 비교)

  • Choi, Young-Hoon;Kim, Yoon-Hyun;Kim, Jin-Young;Lee, Jung-Hoon;Cha, Jae-Sang
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.11 no.4
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    • pp.195-201
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    • 2011
  • Cognitive radio (CR), which is proposed as a technology that utilizes the frequency resources effectively, has studied to relive scarcity of the frequency resources. CR provides opportunistically under-utilize licensed frequency to the secondary user. However, in the wireless channels, due to the effect of fading and shadowing environments, spectrum sensing performance is compromised. Besides, to detect and classify various CR systems, a novel spectrum sensing algorithm is needed. Therefore, in this paper, we proposed the spectrum sensing algorithm with water marking scheme.

Effectiveness of DUPACK-independent TCP in Coded Wireless Mesh Networks (중복 승인을 사용하지 않는 TCP의 코드화된 무선 메쉬 망에서의 효과)

  • Lim, Chan-Sook
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.11 no.1
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    • pp.7-13
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    • 2011
  • While the TCP throughput degradation problem in coded wireless mesh networks is well-known, few effective solutions have been proposed. Most schemes proposed attempts to mask packet reordering by ordering packets at a lower layer or to adjust a packet transmission rate to solve the scarcity problem of coding opportunities. Through the throughput comparison of traditional standard TCP variants, we show that losses and duplication of TCP acknowledgements in coded wireless mesh networks can impact throughput. In addition, we show that a TCP variant that does not rely on duplicate acknowledgements is more suitable for coded wireless mesh networks.

cDNA microarray profiling of Bombyx mori(kl20) during early embryogenesis

  • Hong, Sun-Mee;Kang, Seok-Woo;O, Tae-Jaeng;Kim, Nam-Soon;Lee, Jin-Sung;Goo, Tae-Won;Yun, Eun-Young;Choi, Ho;Hwang, Jae-Sam;Nho, Si-Kab
    • Proceedings of the Korean Society of Sericultural Science Conference
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    • 2003.04a
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    • pp.47-48
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    • 2003
  • The development of cDNA microarray has permitted the analysis of thousands of genes simultaneously. cDNA microarray has been used to analyze gene expression profiles during developmental stage in both single and multicellular organisms. Two significant factors contributing to the limitation of the development of cDNA microarray in the Bombyx mori are the shortage of accessible repositories of cDNA clones and ESTs and the relative scarcity of facilities to produce microarrays and analyze the data generated. (omitted)

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Criteria and Evaluation of Local Tidal Flats for Designating Conservation Sites in the Southwestern Coast of Korea (보호지역 지정을 위한 갯벌의 평가기준 개발과 전남 지역갯벌의 평가)

  • Chang, Jin-Ho
    • Journal of Environmental Science International
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    • v.17 no.12
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    • pp.1391-1402
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    • 2008
  • Designating conservation sites is needed for the preservation and management of tidal flats, and also objective criteria, by which preservation values of tidal flats can be evaluated, are required to designate conservation sites. A set of new evaluation criteria or tidal flats was suggested in this study. The criteria, based on six items including scarcity, diversity, naturalness, uniqueness, destruction possibility and preservation will, ave the advantages with which easy and economic assessments are possible by using basic data from the preceding studies. The evaluation results for the three different tidal lats (Muan, Jeungdo-1 and Jeungdo-2) in the southwestern coast of Korea reveal that all he tidal flats evaluated are classified into grade 2. The tidal flat which got the highest valuation score was Jeungdo-1 tidal flat (86.7), and the next was Muan (85.0) and Jeungdo-2 (82.5). The Jeungdo-2 tidal flat was superior in uniqueness and destruction possibility, and the Muan tidal flat was superior in diversity and naturalness.

Energy-Efficient Resource Allocation for Heterogeneous Cognitive Radio Network based on Two-Tier Crossover Genetic Algorithm

  • Jiao, Yan;Joe, Inwhee
    • Journal of Communications and Networks
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    • v.18 no.1
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    • pp.112-122
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    • 2016
  • Cognitive radio (CR) is considered an attractive technology to deal with the spectrum scarcity problem. Multi-radio access technology (multi-RAT) can improve network capacity because data are transmitted by multiple RANs (radio access networks) concurrently. Thus, multi-RAT embedded in a cognitive radio network (CRN) is a promising paradigm for developing spectrum efficiency and network capacity in future wireless networks. In this study, we consider a new CRN model in which the primary user networks consist of heterogeneous primary users (PUs). Specifically, we focus on the energy-efficient resource allocation (EERA) problem for CR users with a special location coverage overlapping region in which heterogeneous PUs operate simultaneously via multi-RAT. We propose a two-tier crossover genetic algorithm-based search scheme to obtain an optimal solution in terms of the power and bandwidth. In addition, we introduce a radio environment map to manage the resource allocation and network synchronization. The simulation results show the proposed algorithm is stable and has faster convergence. Our proposal can significantly increase the energy efficiency.

Current Status of Nanostructured Thermoelectric Materials for Mid-High Temperature Applications (나노구조 기반 중·고온용 열전소재 연구 동향)

  • Nam, Woo Hyun;Shin, Weon Ho;Cho, Jung Young;Seo, Won-Seon
    • Ceramist
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    • v.22 no.2
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    • pp.133-145
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    • 2019
  • Thermoelectric energy conversion has attracted much attention because it can convert heat into electric power directly through solid state device and vice versa. Current research is aimed at increasing the thermoelectric figure of merit (ZT ) by improving the power factor and reducing the thermal conductivity. Although there have been significant progresses in increasing ZT of material systems composed of Bi, Te, Ge, Pb, and etc. over the last few decades, their relatively high cost, toxicity, and the scarcity have hindered further development of thermoelectrics to expand practical applications. In this paper, we review the current status of research in the fields of nanostructured thermoelectric materials with eco-friendly and low cost elements, such as skutterudites and oxides, for mid-high temperature applications, highlighting the strategies to improve thermoelectric performance.

An Efficient VPI/VCI Allocation Algorithm for ABR Multipoint-to-point Connection in ATM Networks (ATM 망에서의 ABR 다점 대 점 연결을 위한 효과적인 VPI/VCI 할당 알고리즘)

  • 천상훈;곽경섭
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.24 no.9B
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    • pp.1661-1667
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    • 1999
  • In this paper, we propose an efficient VP extension algorithm for ABR multipoint-to-point connection in ATM networks. The VC merging or VP merging is used to implement ABR multipoint-to-point connection. We use the VP merging technique. To solve the scarcity problem of VP resources, we propose an efficient VP extension algorithm. Since the proposed scheme follows the standard VPI/VCI format, it doesn’t require another table according to the VP extension. We compare the proposed scheme with VC merging algorithm. The result shows that the proposed method can provide fair bandwidth allocation among the sources in multipoint-to-point connection.

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