• Title/Summary/Keyword: Open and Closed

Search Result 1,790, Processing Time 0.036 seconds

The Characteristics of the Floor Plan on Small-sized Apartments in DaLian-city, China (중국 대련시 소형아파트 평면특성)

  • Chen, Yi-Yang;Park, Sun-Hee
    • Journal of the Korean housing association
    • /
    • v.25 no.1
    • /
    • pp.63-71
    • /
    • 2014
  • This research is aimed to analyze the basic characteristics of the 16 floor plans of 4 small-sized apartments in DaLian-City. Recently, there are increasing that a small-sized apartments for new younger generation in China. The younger ages intend to got a new floor plan types apartments according to own's life style. Also, a lot of construction company showed the many types of new residential space design during the last about 10 years, in DaLian City. The research results are summarized as follows: First, all of the floor plan types were '-' shape, 'L' shape. Second, there were several co-relational types of space plan between living room, kitchen and dining space. Those are LDK, L K, L DK, LD K. Third, the bedroom of the $30m^2$-floor plan size has an open-space design but over the size of $40m^2$-floor plan the space is closed design. Fourth, The number of bathrooms in all the floor plans is just 1 and it's placed beside the entrance except for B3, C4. The basic equipments of the lavatory was a toilet, a washbowl, a shower. A bathtub is installed in the floor plans greater than $60m^2$. Fifth, almost all of the characteristics of the spatial interrelation - each room position order - based on the location of the entrance. In particular, almost all of the bedrooms are furthest from the entrance for the most privacy.

An Exploratory Study on the Extraction of Factors of Purchase Intention of a Smart-Phone Game (스마트폰 게임 콘텐츠 구매요인 추출에 관한 탐색적 연구)

  • Kwon, Hyeog-In;Kim, Ho-Il;Choi, Yong-Seok
    • Journal of Korea Game Society
    • /
    • v.11 no.3
    • /
    • pp.43-53
    • /
    • 2011
  • The purpose of this study was to enhance the factors of the purchase intention of a mobile game for applying existing. For this study, an exploratory analysis was conducted on 40 ordinary peoples to survey through open-ended questionnaires. After that, the factors was examined by 30 experts. finally, closed-ended survey was conducted to confirm the validity and Reliability Verification. As a result, the factors have been identified with 9. From among these, 2 factors were a Newly derived -The factors of a innovation service and device- Through this study, This research will be useful to provide The basis for extended studies of Marketing, Game-development, Market analysis, etc

Study of ${\ulcorner}$LiSangSockDanBang${\lrcorner}$'s Contents by ${\ulcorner}$EuiBangLyuChi${\lrcorner}$ (("의방류취(醫方類聚)" 를 통한 "이상속단방(理傷續斷方)" 의 내용 연구)

  • Kim, Young-Gon;Ahn, Sang-Woo
    • Korean Journal of Oriental Medicine
    • /
    • v.13 no.3
    • /
    • pp.1-10
    • /
    • 2007
  • This study is on the characteristics of LiSangSockDanBang(理傷續斷方). Through this study, the characteristics of LiSangSockDanBang(理傷續斷方) can be oganized as the following: First of all, in LiSangSockDanBang, the treatment of traumatic injury is consisted of the fourteen steps. This fourteen steps is resorted by four steps. ; Washing(洗藥法), Standin in line(整復法), Using an external application(外治法), Using an internal medicine(內服法). This is LiSangSockDanBang's major characteristics. Because of this contents, LiSangSockDanBang is quoted on EuiBangLyuChi(醫方類聚). The first treatment of traumatic injury is Wahing. Wahing is not only sterilizing a wounded region but pushing out the PungSa(風邪). So, to avoid a infection of a tetanus, washing medicine consist of the herbs, that push out the PungSa(風邪). LiSangSockDanBang has high level of surgery. In 1456, YoungLyuGumBang(永類鈐方), has no more level than surgery's in LiSangSockDanBang, is reprinted. This fact means that the surgery is used frequently in those days. In this scientific backing, an operation needle, that described in ChiJongJiNam(治腫指南) and ChiJongBiBang(治腫秘方), are written by Lim UnGook(任彦國), is used frequently, too. In LiSangSockDanBang, the major external applications are HookLyongSan(黑龍散) and PungLyuSan(風流散). In case of open wound, the HookLyongSan is used but in closed wound, PungLyuSan is used. The internal medicine has three applications. ; Removing extravasated blood(瘀血), Catharsis(通利大小便), Supplementation(補氣血).

  • PDF

공기조화용 자기냉동기의 연구 동향

  • 이종석
    • The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
    • /
    • v.29 no.4
    • /
    • pp.48-54
    • /
    • 2000
  • 자성재료에 자기장을 걸어주변 가열되고 자기장을 제거하면 냉각되는 성질이 있는데, 이를 자기열량효과(magnetocaloric effect)라고 하며, 이것을 이용해서 저온을 생성시키는 방법을 자기냉동(magnetic refrigeration)이라고 한다. 큐리 온도(Curie temperature) 부근의 강자성체에 자 기장이 가해지면 전자례도내에서 쌍을 이루지 않은 전자들의 자기모벤트들이 자기장에 평행 하게 배열되는데, 이로 인해 열역학적 무질서의 척도인 엔트로피는 낮아지고 이러한 손실을 보상하기 위해 재료의 온도가 올라가게 된다.반대로 자기장이 제거되면 자기모벤트가 본래의 무질서한 상태로 돌아오며, 엔트로피가 증가하 고 재료의 온도는 떨어지게 되는 것이다. 역사적으로 보면 1881년에 Warburg가 큐리온도 부근의 철에서 자기열량효과를 처음 발견하였으며. 1926년과 1927년에 Debye와 Giauque가 각각 단열소자볍 (adiabatic demagnetization)을 제안함으로써 실용화되기 시작하여 주로 극저온을 얻는 방법으로 이용되어 왔다. 1950년도 이전의 연구는 절대온도 영도(OK)에 도달하고 자 하는 순수과학적인 노력으로서 개방사이클(open cycle)을 이용한 단열냉각 방식을 추구하 였으나, 1950년 이후부터는 공학적인 응용을 목적으로 밀폐사이클(closed cycle)을 형성하는 자기냉동기에 관한 연구가 진행되었다. 1976년에 Brown은 희토류(rare earth) 금속인 가돌리늄(Gd)을 사용하여 유체(물 80%와 에틸 알코올 20%)를 재생시킴으로써 상온에서 작동 하는 자기냉동기를 보고한 바 있다. 그는 7 T의 큰 자장을 이용하였으며, 고온부와 저온부의 온도는 각각 $46^{\circ}C와\;-1^{\circ}C로서\;47^{\circ}C$의 온도간격을 얻었다. 자기냉동에 있어서의 또 하나의 중요한 진전은 1978년과 1982년에 Steyert와 Barclay에 의해서 능동자기재생기(active magnetic r regenerator)의 개념이 소개되고 개발된 것으로, 이는 자성재료가 냉매로서 뿐만 아니라 열전달 유체의 재생기로도 사용되는 방식이다. 이상과 같은 자기냉동기술의 발달에 이어서 1997년에 미국의 Astronautics사(Wisconsin주 Madison시 소재)와 Ames 연구소(Iowa주 Ames 시 소재)의 공동연구팀이 발표한 두 가지의 새로운 진전으로 인해 공기조화 및 냉동분야에 적용할 수 있는 자기냉동기의 실용화 가능성이 한층 높아졌다. 이들의 연구결과는 (1) 자기냉동이 실온에서도 실현 가능한 기술이며 증기압 축식 냉동에 필적할 만하다는 것을 보인 것과 (2) 이미 알려져 있던 자기냉동재료보다 자기 열량효과가 훨씬 큰 새로운 재료를 발견한 것이다. 이로써 자기냉동에 대한 관심과 기대가 한결 커지고 있다. 본 원고에서는 자기냉동의 원리가 되는 자기열량효과와 이를 이용한 자기냉동의 방법 그리고 최근에 이루어진 새로운 진전에 대해 소개하고 공기조화 및 냉동분야에의 적용 가능성을 전망해 보고자 한다.

  • PDF

Use of a Foley Catheter for Anal Sacculectomy in Dogs (개에서 항문낭 절제를 위한 폴리카테터의 이용)

  • Han, Tae-Sung;Kim, Joong-Hyun;Cho, Ki-Rae;Lee, Hye-Yun;Kim, Gon-Hyung;Choi, Seok-Hwa
    • Journal of Veterinary Clinics
    • /
    • v.24 no.1
    • /
    • pp.35-37
    • /
    • 2007
  • Eight dogs were presented with anal sacculitis with purulent exudates and/or open in the right or left anal sac. Patient dogs, ranging in size from 3-to-8 kg, were treated with closed anal sacculectomies, in which the balloon of a Foley catheter (No. 6, 1.5 ml) was used to facilitate surgical dissection of the sac. In all cases, the Foley catheter successfully distended the anal sac during its removal. Clinical signs associated with the diseased anal sac were abated In the all dogs for a follow-up period of one-to-three months. Anal sacculectomy is a good therapeutic option for cases of chronic anal sacculectomy or impaction. The use of a small Foley catheter to distend the anal sacs during surgery was easy, Inexpensive, and successful.

A Consideration of Hydrazine Syntheses (Hydrazine 合成의 一考察)

  • Lee, Hac-Ki
    • Journal of the Korean Chemical Society
    • /
    • v.5 no.1
    • /
    • pp.1-6
    • /
    • 1961
  • It is important to study hydrazine because of the development of new uses for its derivatives. The Rasching method is the only satisfactory one for synthesizing hydrazine; it involves the oxidation of ammonia by sodium hypochlorite in the presence of some such catalyst as gelatin. Calcium hypochlorite was substituted for the sodium hypochlorite particularly in this work, applying agar-agar as catalyst. The results of the experiments are as follow: 1. The yield is proportional to the mole-ratio of ammonia to available chlorine in calcium hypochlorite and about 60% is obtained when the ratio is 20. 2. Agar-agar can be used as a catalyst and its proper concentration in the solution is 0.005%. 3. Proper concentration of available chlorine in the reaction solution is 0.23 mole/l. 4. The most effective condition for the reaction is a temperature of $60{\sim}65^{\circ}C.$ maintained for $20{\sim}25min$. 5. The reaction takes place equally well in either an open or closed container. 6. When calcium hypochlorite is applied in place of sodium hypochlorite, the yield of hydrazine is increased as much as 17%. 7. The yield of hydrazine is decreased by eliminating the suspension of $Ca(OH)_2$ which results from the use of calcium hypochlorite. 8. When $Ca(OH)_2$ is added to Rasching process, the yield of hydrazine is raised normally. 9. The fact that some metal ions, such as $Cu^{++},$ inhibit the formation of hydrazine was proved. 10. The suspension of $Ca(OH)_2$ acted as a remarkable adsorbent for $Cu^{++}$ like gelatin. The suspension of $Ca(OH)_2$ which results from the use of calcium hypochlorite acts as a catalyst, absorbing metal ions, to increase the yield of hydrazine. So I think that calcium hypochlorite is a more efficient oxidant than sodium hypochlorite in hydrazine syntheses.

  • PDF

Performance Analysis of the Gamma Guidance Algorithm for Solid Rocket Kick Motors of Upper Stages of Space Launch Vehicles (위성발사체 상단의 고체로켓모터 유도를 위한 Gamma 유도 알고리듬 성능 분석)

  • Song, Eun-Jung;Cho, Sangbum;Sun, Byung-Chan
    • Journal of the Korean Society for Aeronautical & Space Sciences
    • /
    • v.50 no.10
    • /
    • pp.709-716
    • /
    • 2022
  • In this paper the Gamma guidance law, which was used for IUS (Inertial Upper Stage), is applied for solid-motor guidance of a upper stage of a satellite launch vehicle. The RCS (Reaction Control System), which activates after burnout of the upper stage, is employed for the convergence of the guidance algorithm and compensation of velocity errors induced by the solid motor. The algorithm is also simplified by replacing the time-consuming numerical integration process to predict final vehicle states with Keplerian trajectories. The performance of the algorithm is evaluated by conducting 3-DOF computer simulations for off-nominal flight conditions. The numerical results show that Gamma guidance can reduce the orbit injection accuracy in comparison with that obtained by applying open-loop commands.

Trend and Prospect of Scrubber Technology for Regulatory on Sulfur Content in Marine Fuel Oil (선박 연료의 황 함유량 규제에 따른 스크러버 기술의 동향과 전망)

  • Eom, Hanki;Park, Byung Hyun;Jeong, Soon-Kwan;Kim, Sung Su
    • Prospectives of Industrial Chemistry
    • /
    • v.22 no.5
    • /
    • pp.1-13
    • /
    • 2019
  • 국제해사기구(IMO, international maritime organization)는 2015년부터 배출규제해역(ECA, emission control area)을 운항하는 선박은 황 함유량이 0.1%(m/m) 이하로 강화된 기준을 만족하는 연료를 사용해야 하며, 2020년부터는 모든 선박에 대해 황 함유량이 0.5%(m/m) 이하인 연료를 사용하거나 동등 이상의 성능을 갖는 배출가스 후처리 장치의 설치를 의무화하였다. 이에 따라, 선박에서 배출되는 오염물질을 제어할 수 있는 다양한 기술이 개발되고 있으며, 후처리 관점에서 습식 스크러버(wet scrubber)는 선박의 디젤 엔진에서 배출되는 이산화황(sulfur dioxide)을 저감시키기 위한 가장 적합한 해결책으로 알려져 있다. 습식 스크러버는 해수를 사용하는 개방형 스크러버(open loop scrubber)와 화학세정수를 사용하는 폐쇄형 스크러버(closed loop scrubber)로 구분된다. 습식 스크러버는 오염물질의 효율적인 처리가 가능하지만 유지보수비가 비싸고, 폐수 발생으로 인한 2차 오염발생 및 부식에 매우 취약한 단점이 있다. 따라서 최근에는 스크러버 내부의 부식을 방지하기 위한 내부식성 재질에 관한 연구와 흡수제(absorbent)의 고도화 연구가 활발히 진행되고 있다. 또한, 하이브리드형 스크러버(hybrid scrubber)는 개방형과 폐쇄형 스크러버의 장점을 결합한 기술로 황산화물의 배출을 규제하는 배출규제해역에서는 폐쇄형 스크러버를 가동하고, 선박이 공해상으로 진입할 경우 개방형 스크러버로 전환함에 따라 황산화물 배출 및 반응 후 세척수의 폐수배출 기준을 동시에 만족할 수 있다.

Comparison of Nutrient Replenishing Effect under Different Mixing Methods in a Closed-loop Soilless Culture using Solar Radiation-based Irrigation (적산 일사 제어법으로 관수하는 순환식 수경재배에서 배액 혼합 방식에 의한 재사용 양액 내 양분 조정효과 비교)

  • Ahn, Tae-In;Shin, Jong-Hwa;Noh, Eun-Hee;Son, Jung-Eek
    • Journal of Bio-Environment Control
    • /
    • v.20 no.4
    • /
    • pp.247-252
    • /
    • 2011
  • Electrical conductivity, drainage, and irrigation amount of nutrient solution are important factors for determination of the mixing ratio of fresh and reused nutrient solutions in closed-loop soilless culture. Generally a fixed mixing ratio is applied in commercial scale greenhouses using solar radiation-based irrigation system. Although it ensures continuous supply of fresh nutrient solution in the mixing process, occasional discharge of the drainage is inevitably required. This study was conducted to compare the nutrient replenishing effect under different mixing processes and to investigate appropriate mixing process. For this experiment, a fixed mixing ratio (FR), modifiable mixing ratio (MR), and open-loop (OP) as control were applied. Mixing ratio was determined by a set value of EC for dilution of collected drainage in FR and the set values of 1.0 and $2.0dS{\cdot}m^{-1}$ were used as treatments (FR 1.0 and FR 2.0), respectively. In MR, mixing ratio was determined based on EC and volume of drainage within irrigation volume per event. The volume of drainage stored in the drainage tank tended to increase in FR 1.0. Although such trend was not observed in FR 2.0 and MR, the volume of drainage stored in MR was lower than that in FR 2.0. The ion balance of $Mg^{2+}:K^+:Ca^{2+}$ or $SO^{2-}_4:NO^-_3:PO^{3-}_4$ in the drainage and reused nutrient solution changed within a narrow range regardless of treatment.

A Grounded theory Approach on the Experience of Sexual Abuse Victims (성폭력 피해여성의 경험에 관한 연구)

  • Kim, Kyung-Hee;Nam, Sun-Young;Chee, Soon-Ju;Kwon, Hye-Jin;Chung, Yeon-Kang
    • Journal of the Korean Society of School Health
    • /
    • v.9 no.1
    • /
    • pp.77-98
    • /
    • 1996
  • This studies designed to work out a theoretical framework on the experience of sexual abuse from the perspective of grounded theory in an effort to provide more practical and efficient nursing intervention for female victims. The subcategories identified were "sexual abuse", "threatening", "absent mindness", "embarrassment", "horripilation", "dizziness", "wondrousness", "filthiness", "sexual curiosity", "violence level", "victim's age", "neighbors response", "victims personality", "common experience", "sexual abuse information", "family relations", "level of familiarity", "hiding", "suppression", "self-torture", "self-protection", "avoidance", "asking aid", "withdrawal", "hatred", "confusion", "dodging, "remmant", and "pursuing". The 29 subcategories given above were further integrated into 16 categories such as "victimizedness", "being astounded", "filthiness", "degree", "developmental stage", "response pattern", "personality", "rarity", "information availability", "family support", "cover-up", "escaping", "informing", "negative internalization", and "positive pursuit of change". The core categories linked to all the other categories turned out to be "being taken aback" and "filthiness" incorporating the relevant subcategories. A total of 23 theoretical hypothesis emerged in the process of analyzing data. 1. the grater sexual curiosity, the weaker the senses of being taken aback and filthiness. 2. The weaker sexual curiosity, the stronger the senses of being taken aback and filthiness. 3. The stronger the level of violence, The more violent the senses of being taken aback and filthiness. 4. The lower the level of violence, the weaker the senses of being taken aback and filthiness. 5. The younger the victims, the stronger the senses of being taken aback and filthiness. 6. The older the victims, The weaker the senses of being taken aback and filthiness. 7. 'Escaping' will transpire regardless of the given circumstances. 8. The weaker the senses of being taken aback and filthiness, the more probable 'informing' and 'escaping' transpire. 9. The stronger the senses of being taken aback and filthiness, the more probable 'informing' and 'escaping' transpire. 10. The more protective the response from 'informing' and 'escaping' transpire around, the more likely the response to being taken aback' and 'filthiness' will be 'informing' and 'escaping'. 11. The more repelling the response from around, the more likely the response to 'being taken aback' and 'filthiness' will be 'covering-up' and 'escaping'. 12. The more open minded the personality of the subject, the more likely the response to 'being taken aback' and 'filthiness' will be 'informing' and 'escaping'. 13. The more closed the personality of tile subject, the more likely the response to 'being taken aback' and 'filthiness' will be 'covering-up' and 'escaping'. 14. The more frequent the experience of sexual abuse, the more likely the response to 'being taken aback' and 'filthiness' will be 'informing' and 'escaping'. 15. The less frequent the experience of sexual abuse, the more lilely the response to 'being taken aback' and 'filthiness' will be 'covering-up' and 'escaping'. 16. The more available information concerning sexual abuses, the more likely response to 'being taken aback' and 'filthiness' will be 'informing' and 'escaping. 17. The less available information concerning sexual abuses, the more likely the response to 'being taken aback' and 'filthiness' will be 'covering-up' and 'escaping'. 18. The more cohesive the family of the subject, the more likely the response to 'being taken aback' and 'filthiness' will be 'informing' and 'escaping'. 19. The less cohesive the family of the subject, the more likely the response to 'being taken aback' and 'filthiness' will be 'covering-up' and 'escaping'. 20. The less familiar the subject is with the abuser, the more likely the response to 'being taken aback' and 'filthiness' will be 'informing' and 'escaping'. 21. The less familiar the subject is with the abuser, the more likely the response to 'being taken aback' and 'filthiness' will be 'covering-up' and 'escaping. 22. The more likely the response to 'being taken aback' and 'filthiness' is 'informing and 'escaping', the more positive changes the subject will pursue. 23. The more likely the response to 'being taken aback' and 'filthiness' is 'covering-up' and 'escaping', the more negative changes the subject will pursue. The following four hypotheses were conformed in the process of data analysis. 1) In case the level of violence is strong but 'being taken aback' and 'filthiness' in weak because of strong sexual curiosity and also if information concerning sexual abuse is not readily available and the frequency is low, negative internationalization marked by 'covering-up' and 'escaping' will take place despite the fact the subject is open-minded, the family is cohesive and the abuser is unfamiliar. 2) In case the level of violence is weak but 'being taken aback' and 'filthiness' is weak combined with weak sexual curiosity and also if information concerning sexual abuse is readily available and the response from around is protective and the frequency is high, the subject will pursue positive changes to 'being taken aback' and 'filthiness', further aided by the fact that the subject is open-minded, the family is cohesive and the abuser is unfamiliar. 3) In case the level of violence is strong and 'being taken abuse' and 'filthiness' is strong because of weak sexual curiosity and also if information concerning sexual abuse is reading available and the response from around is readily available and the response from around is protective and the frequency is low, the subject will persue positive changes marked by 'informing' and 'escaping' despite the fact that the family cohesion is weak and the abuser is familiar. 4) In case the level of violence is strong and 'being taken aback' and 'filthiness' is strong because of weak sexual curiosity and also if information concerning sexual abuse is not readily available and the response from around is respelling and the frequency is low negative internalization like 'covering-up' and 'escaping' will take place, further aggravated by the fact that the subject's personality is closed, family cohesion is weak, and subject is familiar. On the basis of the above finding, it is recommended that nursing intervention should focus on promoting the milieu conductive to the victims pursuing positive changes along with the adequate aids from protection facilities as well as from the people around them.

  • PDF