• 제목/요약/키워드: main family

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Improved Zero-Current-Switching(ZCS) PWM Switch Cell with Minimum Additional Conduction Losses

  • Park, Hang-Seok;Cho, B.H.
    • Journal of Power Electronics
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    • 제1권2호
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    • pp.71-77
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    • 2001
  • This paper proposes a new zero-current switching (ZCS) pulse-width modulation (PWM) switch cell that has no additional conduction loss of the main switch. In this cell, the main switch and the auxiliary switch turn on and turn off under zero current condition. The diodes commutate softly and the reverse recovery problems are alleviated. The conduction loss and the current stress of the main switch are minimized, since the resonating current stress of the main switch are minimized, since the resonating current for the soft switching does not flow through the main switch. Based on the proposed ZCS PWM switch cell, a new family of DC to DC PWM converters is derived. The new family of ZCS PWM converters is suitable for the high power applications employing IGBTs. Among the new family of DC to DB PWM converters, a boost converter was taken as an example and has been analyzed. Design guidelines with a design example are described and verified by experimental results from the 2.5 kW prototype converter operating at 40 kHz.

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심층면접을 통한 충북지역 종가(宗家) 음식문화 특성 연구 (Specialized Research on Food Culture of Main Family in Chung-Buk through In-Depth Interview)

  • 김미혜;한정인;정혜경
    • 동아시아식생활학회지
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    • 제25권4호
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    • pp.574-593
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    • 2015
  • This research's main objective was to analyze the special qualities of food culture of the Main Family in Chung-Buk through a case study on the diversified types of meals that the Main Family cooked, such as courtesy food, normal food, and seasonal food. The research identifies traditional ingredients of specialties from Chung-Buk through old literature. According to "Sejongsillokjiriji", there are a myriad of ingredients:, including jujube, ginseng, pine mushroom, manna lichen, persimmon, mandarin fish, crab, sweetfish, lacquer, honey, and terrapin, which represent Chung-Buk's unique ingredients. Another reliable source, "Banchandungsok", does not provide a detailed list of traditional foods, but rather a simple list. The majority of food from Chung-Buk, in "Banchandungsok", consist of side dishes like kimchi and salt greens. Eventually, salt greens became diversified. As Chung-Buk is a landlocked province, people often used dried pollack. Kimchi and raw coaker were frequently used as well, and rice cakes encompassed multiple ingredients such as: jujube, mushroom, pine nut, and, dried persimmon. There were distinct differences in the diversity of food and amount of dishes used by the Main Families of Chung-Buk dependent on the ingredients and wealth of each Main Family. Chung-Buk has a landscape full of mountains, so potatoes were abundant and used to make potato Dasik. When cooking process was completed, people placed kelp on to the finished product. Seasonal foods were considered very important, especially on special occasions such as Backjoong, which was a day dedicated to laborers. These foodsprovided a good opportunity for the community to build stronger bonds by sharing rice cake and Yukgaejang with other members of the community. It is apparent that "Jeobbingac" culture, or guest culture, flourished since people in Chung-Buk are traditionally taught to leave spare food for the guest at all times.

거동불편노인가족에 있어서 주 간병인의 가족자원과 스트레스에 관한 연구 (A Study of Family Resources and Stress of Main Caregivers for the Disordered Elderly Family)

  • 배옥현;홍상욱
    • 한국생활과학회지
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    • 제7권2호
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    • pp.1-10
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    • 1998
  • The purpose of this study are to examine the influential variables between general character, family system, coping strategies, social support and stress of main caregivers for disordered elderly family. This study was conducted by interviewing of 177 family-members care to giving disordered elderly families in Taegu and Kyeongbuk province. The data were analyzed with the SPSS statistical package using frequency and percentage, multiple regression and path analysis. The results of this study were as follow : The variables influencing stress related to the disordered elderly family are the degree of disorder (${\beta}=.348^{***}$), caring-time-per day (${\beta}=.303^{***}$), employment status of main caregivers (${\beta}=.223^{***}$), social support (${\beta}=.241^{**}$), relational coping strategies (${\beta}=.199^{**}$), problem-avoidance coping strategies (${\beta}=.327^{***}$). Thus, in disordered elderly families, a high-stress situation arises with a highly-educated caregiver when problem-avoidence coping strategies or relational coping strategies are used or when daily caring time is great. A low-stress situation results when the caregiver is employed and the social support level is high.

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경기도 종가(宗家)의 내림 음식 사례 연구 (A Study for the Inheritance Food Case of the Head Family in Gyeonggi-do)

  • 김미혜;정혜경
    • 한국식생활문화학회지
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    • 제31권6호
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    • pp.515-540
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    • 2016
  • This study investigated the characteristics of main house food cultures in Gyeonggi-do using a case study on the head family. The subject of this study was selected through an advisory committee of experts; it incorporated intangible and tangible elements of the main family based on relevant data. Selected representative main house of Gyeonggi-do had 12 parts in total. The entire investigation was conducted in five parts; literature search, telephone survey, in-depth interviews, inheritance food research of the head family, and cuisine demonstrations. Twelve families within the researched family clan had members of high merit or scholarly reputation qualified enough to serve bulcheonwi, a form of important religious worship. Food in Gyeonggi-do, specifically, can be served for Bongjesa jeopbingaek, which is a combination of performance of ancestral rites and greeting guests. Meat ingredients were frequently used. Articles of clothing were colorful and vivid, with wootgi that needed lots of work. Soup and steamed dishes tended to favor simple but fresh tastes that come with their cultural and historical context.

Novel Zero-Current-Switching (BCS) PWM Switch Cell Minimizing Additional Conduction Loss

  • Park, Hang-Seok;Cho, B.H.
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • 제12B권1호
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    • pp.37-43
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    • 2002
  • This paper proposes a new zero-current switching (ZCS) pulse-width modulation (PWM) switch cell that has no additional conduction loss of the main switch. In this cell, the main switch and the auxiliary switch turn on and turn off under zero current condition. The diodes commutate softly and the reverse recovery problems are alleviated. The conduction loss and the current stress of the main switch are minimized, since the resonating current for the soft switching does not flow through the main switch. Based on the proposed ZCS PWM switch cell, a new family of dc to dc PWM converters is derived. The new family of ZCS PWM converters is suitable for the high power applications employing IGBTs. Among the new family of dc to dc PWM converters, a boost converter was taken as an example and has been analyzed. Design guidelines with a design example are described and verified by experimental results from the 2.5㎾ prototype boost converter operating at 40KHz.

새로운 영전류 스위칭 PWM 컨버터 (New Family of Zero-Current-Switching (ZCS) PWM Converters)

  • 최항석;문성진;조보형
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2001년도 하계학술대회 논문집 B
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    • pp.946-949
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    • 2001
  • This paper proposes a new zero-current switching (ZCS) pulse-width modulation (PWM) switch cell that has no additional conduction loss of the main switch. In this cell, the main switch and the auxiliary switch turn on and turn off under zero current condition. The diodes commutate softly and the reverse recovery problems are alleviated. The conduction loss and the current stress of the main switch are minimized, since the resonating current for the soft switching does not flow through the main switch. Based on the proposed ZCS PWM switch cell, a new family of dc to dc PWM converters is derived. The new family of ZCS PWM converters is suitable for the high power applications employing IGBTs. Among the new family of dc to dc PWM converters, a boost converter was taken as an example and has been analyzed. Design guidelines with a design example are described and verified by experimental results from the 2.5 kW prototype boost converter operating at 40kHz.

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임상-정상가족의 가족체계 유형 및 가족스트레스, 가족자원과 대응책략에 관한 연구 (A Study on Types of Family System, Family Stress, Family Resources and Copying Strategies: Clinic-Normal Family Comparision)

  • 정민자
    • 대한가정학회지
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    • 제30권2호
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    • pp.189-218
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    • 1992
  • The purpose of this study is to measure family stress, family resources, copying strategies and the types of family system. For this purpose, the data were collected from healthy families(231) and clinic families(103). The main results are as follows: 1. Partially family stress, family resources, copying strategies was different by the demographic chrateristics(age, yeares of marriage, job, education, family life cycle family income religion and types of family system). 2. The type of family system was meaning factor for the family stress study. 3. In the case of healthy family, family stress was negative related with family resources, but healthy families used copying strategies variously. 4. In the case of clinic family, family stress was related with family resources and copying strateges strongly. 5. Classifying the types of family system, clinic families were classified extreme family(20.5%), midrange family(39.7%), balanced family(39.7%) and healthy family were classified extreme(13.1%), midrange family(25.8%) balanced family(61.1%).

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유진경 가옥(현 북촌문화센터)의 원형과 궁궐요소 차용 (A Study on the Original Form and Architectural Elements in the Palace of Yu, Jin gyeong's Hanok)

  • 박상욱
    • 건축역사연구
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    • 제23권5호
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    • pp.7-22
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    • 2014
  • It is identified that an initial person who built of 'Seoul Gyedong Modernized Hanok(former Min Hyeong-gi house)' used as 'Bukchon Culture Center' in present, was not Min Hyeong-gi, but his wife, Yu Jin-gyeong, and she built it when 8 years went on after his death(1879~1973), and the construction year was at the gate of Chuseok in 1921. Yu Jin-gyeong was Head Family's Eldest Daughter-in-law in family of Yeo Heung-min who was an influential person at the late Joseon Dynasty and was widow who had only son for 3 generations. And she built this house and moved to gain daughter and live futher grandchilds together in law in new nest. It is arranged that an annex surrounds with main building as the central figure. And this house emulates Yeonkeong-dang in backyard of the Changdeok Palace for 'preservation of main building' and Chim-bang-ga-toe applied on a bedroom in a palace is applied around nobleman family's the main room. It is rare case and expresses that a palace factor is borrowed. Yu Jin-gyeong's house is that a tradition Hanok is adjusted closely in city and central and basing mode as 'protective bedding' and building concept as 'a noble and protective architecture' is realized. So it has a character that development of Hangrang architecture is appeared and Head Family's Eldest Daughter-in-law widow of modern upper class had a special benefit. As well as, a meaning that it is experimental house based on tradition and is build of Hanok with housekeeping as the central figure for appear a form which has minimal Hangrang for housekeeping in yangban family of modern city, can be found.

한국 드라마와 중국 드라마의 며느리 이미지에 나타난 여성상 비교 (A Research on Comparing the Women's Portrayal between Chinese Family Dramas and Korean Family Dramas)

  • 이문행;하일단
    • 한국콘텐츠학회논문지
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    • 제14권5호
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    • pp.63-73
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    • 2014
  • 본 연구에서는 한국과 중국의 가족 드라마에 나오는 여성상을 비교하고자 했다. 이를 위해 한국 드라마 <며느리 전성시대>와 중국 드라마 <며느리의 아름다운 시대>를 분석 대상으로 채택했다. 여성의 이미지는 가족 드라마에 나타나는 중요한 부분이며, 그 시대의 모습을 반영한다. 따라서 가족 드라마에 나오는 여성상을 연구하는 것은 사회 문화적 가치를 지니고 있다. 양국 드라마의 내용을 분석하여 성역할정형화모델과 여성상을 비교한 결과, 양국 간에 큰 차이가 존재하는 것으로 나타났다.

기혼자의 가족여가의례와 가족여가의례 후 긍정적·부정적 효과가 결혼만족도에 미치는 영향 (The effects of Family Leisure Ritual and Positive·Negative Outcomes of Family Leisure Ritual on Marital Satisfaction with the Married)

  • 배재현;박세정
    • 한국산학기술학회논문지
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    • 제17권11호
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    • pp.168-176
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    • 2016
  • 본 연구는 기혼자를 대상으로 가족여가의례와 가족여가의례 후 긍정적 부정적 효과가 결혼만족도에 미치는 영향을 살펴봄으로써 결혼만족도를 높일 수 있는 실천적 함의를 제공하는 데 목적이 있다. 이를 위해 기혼자 216명에 대한 설문조사 자료를 토대로 다변량분산분석과 위계적 회귀분석을 실시하였다. 주요 결과는 다음과 같다. 첫째, 가족여가의례의 주요활동은 '근교나들이'가 가장 높았고, 갈등요인은 '가족 공동의 시간을 갖기 어려워서'가 가장 높았다. 둘째, 가족여가의례는 연령에 따라 통계적으로 유의한 차이가 나타났다. 즉 30대 이상이 50대 이상보다 가족여가의례를 더 많이 실행하는 것으로 나타났다. 그리고 가족여가의례 후의 긍정적 부정적 효과는 성별에 따라 통계적으로 유의한 차이가 나타났다. 즉 기혼 남성이 기혼 여성보다 긍정적 효과를 높게 지각하였고, 기혼 여성이 기혼 남성보다 부정적 효과를 높게 지각하였다. 셋째, 가족여가의례와 가족여가의례 후 긍정적 부정적 효과는 결혼만족도에 통계적으로 유의한 영향을 미치는 것으로 나타났다. 즉 가족여가의례를 많이 실행할수록, 가족여가의례 후 긍정적 효과를 높이 지각할수록, 부정적 효과를 낮게 지각할수록 결혼만족도가 높아지는 것으로 나타났다. 이에 본 연구는 기혼자들이 가족여가의례 수행과정에서 긍정적인 인식을 높이기 위한 노력들이 필요함을 시사한다.