• 한국콘텐츠학회논문지
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• 제12권10호
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• pp.376-384
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• 2012

본 연구는 보수교육에 참여한 1급, 2급 응급구조사 389명을 대상으로 보수교육 실태와 요구도를 조사하여 직무에 알맞는 보수교육을 제공함으로써 보수교육의 만족도를 높이고, 효과적으로 운영할 수 있는 기초자료를 제공하고자 실시하였다. 그 결과 '1급, 2급 응급구조사의 보수교육 실태 및 차이'에서 '보수교육의 만족도 정도'(p=0.002), '자격에 따라 교육이 분리되어야 한다.'(p=0.000), '보수 교육 등록비는 적절하였다.'(p=0.027), '보수 교육 시행 후 평가의 필요성 정도'(p=0.007)가 통계적으로 유의하게 나타났다. '보수 교육 내용으로 가장 적합한 주제'는 1급(42.3%)과 2급(31.1%) 모두 ALS가 가장 높은 백분율을 나타냈으나, 통계적으로는 유의(p=0.224)하지 않았다. '보수 교육 개선 방안 요구도'에서는 1급과 2급이 각각 29.5%, 31.2%로 '내용의 질적 개선'을 가장 원하고 있으나, 통계적으로는 유의(p=0.664)하지 않았다. 또한 각 근무분야에 따라 '보수 교육 내용으로 가장 적합한 주제'로 '병원'(46.3%)과 '병원 외'(28.6) 모두 ALS로 나타났으며, 또한 '병원'과 비교해 '병원 외'에서 '법과 최신의료정보'의 요구도가 약 12% 정도 높았다. 연구 결과에 따라 1급과 2급의 교육을 분리를 고려해야 할 것이며, 근무분야의 요구도에 따라 보수 교육 내용을 고려 및 반영하여 보수교육의 질적 향상과 만족도를 높여야 할 것이다.

• 대한인간공학회지
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• 제18권2호
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• pp.91-102
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• 1999

There are various kinds of good feelings in indoor environment such as comfort, pleasure, delight, refreshment, geniality, etc. Each feeling is interrelated with other complex elements of senses such as warmth, coldness, calmness, clearness, brightness, etc. In this paper, we described what is good feeling in indoor environment, and developed elements of good feelings using Emotion & Sensibility engineering approach. Resultant elements of good feelings were "comfort," "refreshment," and "freshness." Secondary, we investigated the relationships of these elements with certain elements of senses. "Comfort" is related with "warmth, calmness, brightness, and very clearness in indoor air." "Refreshment" and "freshness" are related with "coldness, moderately calmness, very brightness, and very clearness in indoor air." The relationships were formulated as a fuzzy model. By applying human intuition to this model, we could determine physical ranges of "comfort, refreshment, and freshness."

• 한국식생활문화학회지
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• 제27권3호
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• pp.324-330
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• 2012

This study investigated the perception, consumer pattern and satisfaction of the ginseng products of 600 people in the Seoul area surveyed from Feb. 1 to 28, 2011. The perception and satisfaction tests were performed using a 5-point scale (1=disagree (dissatisfy) very much, 5=agree (satisfy) very much. People perceived ginseng to have refreshment (3.86), immuno-modulation (3.78), anticancer (3.51), and antiaging (3.41) properties. People in their 20s (4.02) scored high on refreshment compared to people in their 60s and over (3.73). Most people (79.8%) consume ginseng products and prefer red ginseng (74.3%). More people in their 40s (54.1%) and 50s (48.2%) consume ginseng products for refreshment than people in their 20s (38.7%), 30s (41.5%) or 60s and over (40.0%). However, more people in their 50s (36.1%) and 60s and over (43.6%) consume ginseng products for disease prevention than people in their 20s (8.6%). Most people (66.4%) take ginseng all year round. People in their 20s (2.70) showed a smaller satisfaction score of the taste of ginseng products than those in their 30s (3.21), 40s (3.23), 50s (3.26) and 60s and over (3.38).

• 한국수정란이식학회지
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• 제20권2호
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• pp.157-162
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• 2005

To find out the possible inefficiencies of artificial inseminators at rectovaginal insemination in cows, inseminators' skill were evaluated by controlling the semen thawing procedure adopted and by using the technique of dye deposition in the genital tract of slaughtered cows. This was followed by refreshment training for the inseminators. Thirty seven artificial insemination technicians regularly working in the government, cooperative and NGO (Non Government Organization) artificial insemination programmes at different places of Bangladesh were included in the study. Individual technicians were asked to thaw a semen straw and deposit dye in the genital tract of slaughtered cows following the procedures they would have adopted in their actual practices of insemination. The time and water temperature adopted by technicians were recorded and genital tract after sham artificial insemination was dissected to determine the site of dye deposition. Then, the inseminators took part in a three days intensive training program. The training program was ended up with the same tests for thawing frozen semen straw and dye deposition in the genital tract of slaughtered cows. At pre training evaluation, only $25\%\;and\;72\%\;(n=36)$ inseminators adopted co..ect thawing time and temperature, respectively. At post training evaluation, all inseminators thawed semen straws for proper time and temperature. At pretraining evaluation, $21(57\%),\;11 (30\%)\;and\;3(8\%)$ inseminators deposited dye at the body of uterus, in the vagina or in cervix, and into the horn of uterus, respectively. In $2(5\%)$ cases dye did not pass into the genital tract, instead back flowed through the space between the barrel of insemination gun and sheath. At post training evaluation, all inseminators successfully deposited dye in the body of uterus. Frequent evaluation of inseminators' skill and subsequent training would help improvement of the artificial insemination technicians' skill.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2009년도 IWAIT
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• pp.618-622
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• 2009

An improvement of standard encoder has been saturated recently. However, new coding method does not have a compatibility with conventional standard. To solve this problem, new concept coding method that has a semicompatibility with standard may be discussed. On the other hand, cyclic Intra-picture coding is used for access and refreshment. However, I-picture spend large amount of bits. An enhancement of I-picture is desired with keeping its refreshment performance. Further, it's a problem that quality change at the border of GOP because of its independency. To respond these, we propose the coding which is applied an inter-frame processing at the border of GOP. Applied method is the reduction of quantization error using the motion compensated inter-picture processing. In this report, we check the improvement of the efficiency and the compatibility of proposed method. As a result of examination, we recognize that the total gain is maximally 1.2dB in PSNR. Generally, the degradation of performance in standard decoding is smaller than its gain. Also the refreshment performance is tested.

• 대한설비공학회지:설비저널
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• 제16권4호
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• pp.350-355
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• 1987

• 대한전자공학회논문지TC
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• 제44권11호
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• pp.67-77
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• 2007

센서 네트워크에서 센서 들의 통신키를 주기적으로 혹은 필요에 의해 갱신하는 것은 매우 중요한 문제이다. 동적인 키관리의 효율성을 기하기 위해, 센서 네트워크는 클러스터 구조를 도입하고 각 CH(Cluster Head)가 클러스터 내의 키를 관리하도록 한다. 그러나, 이러한 클러스터 기반 센서 네트워크에서 CH는 공격의 목표가 되기 쉽고, CH들의 오염은 네트워크 전체에 큰 위협을 가져온다. 본 논문에서, 우리는 CH들의 오염에 강건한 주기적인 키 갱신 방안을 제안하였다. 먼저, 제안방법은 CH가 관리하는 센서들의 수를 줄이고 CH들이 주기적으로 변경되게 함으로써, CH의 오염에 따른 영향을 최소화 한다. 둘째, 제안방법은 임의의 CH와 BS(Base Station)간의 키 설정에 다른 센서노드들을 참가시켜 공격자들을 혼란에 빠뜨린다. 우리는 수치적인 분석을 통해 제안방법이 다른 키 관리 방법들에 비해 안전하고 CH들의 오염에 강건함을 증명하였다.

• 방송과미디어
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• 제7권3호
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• pp.94-103
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• 2002

본 논문은 전송 오류가 존재하는 환경에서 사용될 수 있는 오류 내성을 갖는 비트스트림을 생성하기 위한 H.26L부호화 알고리즘을 소개한다. 소개되는 새로운 부호화 알고리즘은 기존의 GOB 단위 forced intra-refreshment 기법이나 multiple decoder simulation 기반 RD 최적화 기법에 비해서 RD 특성 등에서 대단히 우수한 성능을 보인다.

• 한국정보보호학회:학술대회논문집
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• 한국정보보호학회 2002년도 종합학술발표회논문집
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• pp.499-503
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• 2002

초고속 무선인터넷 환경을 구축하기 위한 인프라의 강력한 대안이 되고 있는 무선랜 시스템은 사무실 단위의 소규모 네트워크 환경에서 벗이나 공중망 환경으로 진화하고 있다. 무선랜 시스템의 공중망 적용을 위한 주요 기술 중 하나는 무선랜 시스템의 보안성을 보장하는 것이다. 본 논문에서는 무선랜 사용자와 액세스포인트 사이에서 이루어지는 새로운 암호 키 교환 프레임을 제시하고, 그 결과로써 효율적인 무선구간 암호 키 갱신 및 보안성이 향상된 무선구간 데이터 프레임 암호화 효과를 보인다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 Techno-Fair 및 추계학술대회 논문집 전기물성,응용부문
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• pp.115-116
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• 2008

YBCO materials in the form of large single crystals without weak link probleum is necessary. A refreshment and uniform distribution of the Y211 particles in the YECO were achived by sintering the Ag doped samples. The $em{\backslash}nhancement$ of the critical current density was ascribable to a fine dispersion of the YBCO particles, a low porasity and the persence of Ag particles. In $addir{\backslash}tion$, we have designed and manufactured large YBCO single domain with levitation force.