• Title/Summary/Keyword: Half Work

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A Study on the Need of Child-care Service and Child-care Programs for the Working Class Mothers (생산직 취업모의 탁아서어비스의 요구 및 그들을 위한 탁아제도에 관한 연구)

  • 정민자
    • Journal of the Korean Home Economics Association
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    • v.28 no.1
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    • pp.125-140
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    • 1990
  • The purpose of this study is to inverstigate the need of child care services and child care programs for the working class mothers. We surveyed four Industrial complex (in Seoul, Incheon, Pusan, Ulsan) to collect data. The samples were 282 mothers (Seoul: 95, Incheon: 54, Ulsan: 62, Pusan: 71). The mothers had children under six years of age and they worked at factory for 11 hours. They (65%) rented houses with 1-2 rooms. Their income was not enought to support their family. They were never supported by social network, so they had to work at factory and they need child care services. The mothers had many difficulties of child rearing and early childhood education. They wanted perfect day care programs. They expected it as followings: (1) Day care center placed at factory or near home. (2) The administrater is goverment or employer. (3) It is managed a full time system. (4) It is center-based day care or industrical day care. (5) They share day care expense with employer or goverment. (6) Day care expenses is 35,000 won in case of full time system, 25,000 won in case of half-time system. They desited highly qualifed day care programs, but they would not expense highly cost. So we suggest that goverment and factory employers support the working mothers.

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A Positive Study on the Characteristics of Tenant Farms according to Farm Income (농가소득(農家所得) 측면(側面)에서 본 소작농가(小作農家)의 성격(性格)에 관한 실증적(實證的) 연구(硏究))

  • Kim, Jai Hong
    • Korean Journal of Agricultural Science
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    • v.15 no.1
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    • pp.114-122
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    • 1988
  • This paper aims to identify the characteristics of the tenant farm's income compared with farm household consumption. Farm household surplus is a critical criteria for the reproduction of agriculture. The degree of self sufficiency of farm household consumption according to agricultural income was rapidly decreasing for the period of 1980's. Only 78.9 percents of farm household consumption was earned by agricultural income. Tenant farms were classified according to the following characteristics; self-supported, semi self-supported, leased, deleted, over-consumption. Self-supported tenants are one of the backbones of Korea's future agriculture, because they are able to meet their household needs by only their farm work without other income producing endeavors. The rent paid by those tenants surveyed was estimated at 26.2 percents of their farm household income. However, the national average for such rental payment is equivalent to 4.7 percents of farm household income. 63 percents of paddy rental fee was paid by inkind of rice and 80 percents of the upland rental fee was paid by cash. Self-supported farms as 20 percents of total surveyed should be the target of agricultural price policy and semi self-supported & over-consumption farms as 30 percents be that of rural development policy, and the other half be that of social welfare policy.

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Study on Electro-Mechanical Characteristics of Array Type Capacitive Pressure Sensors with Stainless Steel Diaphragm and Substrate (스테인리스 강 박막 및 기판을 이용한 배열형 정전용량 압력센서의 전기 기계적 특성연구)

  • Lee, Heung-Shik;Chang, Sung-Pil;Cho, Chong-Du
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.30 no.11 s.254
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    • pp.1369-1375
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    • 2006
  • In this work, mechanical characteristics of stainless steel diaphragm have been studied as a potential robust substrate and a diaphragm material for micromachined devices. Lamination process techniques combined with traditional micromachining processes have been adopted as suitable fabrication technologies. To illustrate these principles, capacitive pressure sensors based on a stainless steel diaphragm have been designed, fabricated and characterized. The fabrication process for stainless steel micromachined devices keeps the membrane and substrate being at the environment of 8.65MPa pressure and $175^{\circ}C$ for a half hour and then subsequently cooled to $25^{\circ}C$. Each sensor uses a stainless steel substrate, a laminated stainless steel film as a suspended movable plate and a fixed, surface micromachined back electrode of electroplated nickel. The finite element method is adopted to investigate residual stresses formed in the process. Besides, out-of-plane deflections are calculated under pressures on the diaphragm. The sensitivity of the device fabricated using these technologies is 9.03 ppm $kPa^{-1}$ with a net capacitance change of 0.14 pF over a range 0$\sim$180 kPa.

Nonlinear Rotating Flows in Eccentric Cylinders (편심환내의 비선형 회전 유동)

  • Sim, U-Geon
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.24 no.1 s.173
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    • pp.16-28
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    • 2000
  • The steady rotating flows in eccentric annulus has been studied by a numerical method based on the spectral collocation method. The inner cylinder has a constant angular velocity while the outer on e is stationary. Flow between eccentric cylinders is of considerable technical importance as it occurs in journal bearings. In the present work, the governing equations for laminar flow are expressed as Navier-Stokes equations, including the non-linear convection terms. The solutions were utilized i, estimate the effects of the nonlinear terms on the load acting on the rotating cylinder. Based on the half and the full Sommerfeld methods, the load on the rotating cylinder is evaluated with eccentricity, by integrating the pressure and skin friction around the cylinder. The attitude angle and Sommerfeld reciprocal are calculated from the load. Also, the torque on the rotating inner cylinder was calculated. considering the skin friction. The attitude angle and Sommerfeld reciprocal are decreased with eccentricity. Viscous damping coefficient due to the skin friction becomes larger with decreasing the annular space. It is found the non-linear effects of the convection terms on the flow and the load are important. especially on the attitude angle, for relatively wide annular configurations however, the effects on those are minor for very narrow annular ones.

Numerical Study on the Gap Flow of a Rudder System with Bisymmetric Blocking Bar (차단 봉이 혼과 타판 사이에 대칭으로 배치된 타의 틈새유동 수치해석)

  • Oh, Jung-Keun;Seo, Dae-Won;Kim, Hyo-Chul
    • Journal of the Society of Naval Architects of Korea
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    • v.46 no.5
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    • pp.460-470
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    • 2009
  • In recent practice a half round prismatic bar has fillet welded or formed through foundry work along the centerline on rear concave surface of the horn to mitigate gap flow between fixed and movable part of the rudder system. When the gap clearance has been blocked with this practice, numerical simulations indicate that the practices are not only effective in reducing the gap flow but also in mitigating the cavitation. The blocking effects are remarkably improved when a pair of blocking bar is bisymmetrically attached with respect to centerline on the opposite convex surface of the movable part. The blocking bar could be placed on the exposed surface under maximum rudder angle. This implies that the blocking bar could be easily adopted not only in a design stage but also in a maintenance stage for mitigating rudder cavitation. In addition, the numerical simulations imply that more improvements could be anticipated through the selection of section shape of prismatic bar for gap flow blocking.

Experience of School Health Instructors in the Application of Complimentary and Alternative Medicine (초등학교 보건교사의 보완대체요법 적용 경험)

  • Kim, Young-Hae;Kim, Hyun-Su;Cho, Young-Ran
    • Child Health Nursing Research
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    • v.13 no.3
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    • pp.247-256
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    • 2007
  • Purpose: This study was done to examine the experience of school health instructors in applying complimentary and alternative medicine (CAM). Method: The participants were 215 health instructors working in elementary schools in Busan. Data were collected from Dec. 1, 2004 to Mar. 10, 2005 and were analyzed using SPSS WIN 10.0. Results: Most of the health instructors had knowledge about CAM. Among the various CAM methods, acupuncture was the most widely known at 78.6%. While 53.5% had no experience in CAM education, 46.5% had been trained. Slightly over half (52.1%) had used CAM at school and based their decision on personal experience. As to applicability of CAM at school, 72.1% thought CAM was applicable, and 78.7% of this group considered alleviation of symptoms and assistance in the treatment process as the reasons for their answer. There were significant differences in responses as to the applicability of CAM according to age (p=.002), work experience (p=.004) and educational background (p=.002). Conclusions: The above results suggest that there is a need to develop a professional education program on complimentary and alternative medicine to assist school health instructorsto plan nursing interventions using CAM which are individualized and practical.

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A Study on Furniture Design Adopted from a Natural Phenomenon - Focusing on Symbolic Formativeness from the Changing Shapes of the Moon - (자연현상을 활용한 가구디자인 연구 - 달의 형태변화에 따른 상징적 조형성을 중심으로 -)

  • Park, Eun-Min;Yoon, Yeoh-Hang
    • Journal of the Korea Furniture Society
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    • v.26 no.1
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    • pp.12-21
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    • 2015
  • This is a study and work of furniture design adopted from a natural phenomenon, especially from the changing shapes of the moon. The drawer of furniture, a part frequently contacted with our hand (human body) is well related to the symbolism of the moon, which includes life conception and fertility. I created various forms of drawer handle shaped from the moon phases, which give a furniture design esthetical, symbolic and formative meanings. The characteristics of my drawer furniture designs are classified into 3 types. First, as the volumes of drawers increase, the handle shapes also change differently: old moon, crescent, half moon and full moon. Second, without keeping time order, drawers may have the same sizes with handles freely selected and arranged by formative accounts. Third, both increasingly changing type and freely selected and arranged type are combined to make a composite structure. In their simple geometric forms, these furnitures can provide nature intimacy, which fulfill the needs of our time.

A Study on the Math. Camp to Improve Underachiever's Mathematical Disposition (학습 부진아의 수학적 성향 제고를 위한 수학캠프)

  • 박혜숙;박기양;김영국;박규홍;박윤범;임재훈
    • The Mathematical Education
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    • v.38 no.2
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    • pp.129-144
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    • 1999
  • The purpose of our work is to developing the program of math. camp to improve underachiever's mathematical disposition. To do this, the following research were taken; (1)Analysis of current status of programs for underachievers (2)Analysis of inclination to mathematics(We collected the data from 2 classes of middle schools) (3)Prepare and apply the program of math. camp for the students including underachievers, and then analysis the effect of the math. camp The results of this study is as follows; (1)Only 40% of investigated schools have their own programs for underachievers. But almost all general high schools do not have such programs because students do not want. More than half of the investigated teachers suggested that the most important thing for underachievers is the induction of motivation for mathematics. (2)Many students dislike mathematics from 5∼6 grade of elementary school, and more than 50% of students think that 'measure' and 'equations' items are difficult. (3) After attending the math. camp based on the games and activities in small groups, the students in the middle-ranking group showed more positive reactions against the items of mathematical disposition and attitude tests. The students in the row-ranking group were improved in the 'self-confidence' and 'will' items of mathematical disposition test and in the 'superiority' and 'interest' items of mathematical attitude test.

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A Study on the Cookery of Andonng Sikhe (I) -I. A Historical Study on the Origin of the Cookery of Andong Sikhe- (안동식혜(安東食醯)의 조리법(調理法)에 관(關)한 연구(硏究) -I. 조리법(調理法)의 유래(由來)에 따른 사적(史的) 고찰(考察)-)

  • Yoon, Suk-Kyung
    • Journal of the Korean Society of Food Culture
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    • v.3 no.1
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    • pp.101-111
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    • 1988
  • This study is to examine the origin of Andong sikhe and to introduce the making process of it. The following facts are found after consulting literature and doing field-work to find out the origin of Andong sikhe. Andong sikhe is a kind of so-sikhe develolped as a sweet beverage, the making process of which is to ferment the mixture of boiled rice, radish slices, and red pepper extract with malt liquid. So-sikhe is made by fermenting with malt the mixture of boiled rice, radish slices, red pepper powder and flavorings such as a shallot, a garlic and salt, and o-sikhe is made by adding fish to the ingredients used to make so-sikhe. So-sikhe is distributed on the coastal areas of the East Sea and the inland areas adjacent to them as o-sikhe is. It is presumed that so-sikhe was introduced to Korea by the same way as o-sikhe was introduced eastward from the regions around Thailand by sea. It is also presumed that Andong sikhe has been developed into its present type after the second half of the 18th century when red pepper was introduced to Korea and then widely used.

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Measurements of Whole-body Vibration Exposed from UH60-Helicopter and Their Analysis Results (UH60 헬기 조종사의 피폭진동 측정 및 평가 결과)

  • Cheung, Wan-Sup;Byeon, Joo-Hyun
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2005.05a
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    • pp.132-137
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    • 2005
  • This paper addresses what amount of whole-body vibration is exposed to pilots of UH60 helicopters during flight. To measure the whole-body exposed from the feet and seat, the 12-axis vibration measurement system was used. It enables simultaneous measurement of vibration exposure from the body contact area of the feet, hip and back. The measured 12-axis vibration signals are exploited to the comfort level of UH60 helicopters during flight. It is shown that the evaluated ride value is close to $0.74{\sim}0.79m/s^2$ and that it is equivalent to the semantic scale of 'fairly uncomfortable'. To assess the health effects of whole-body vibration exposed to pilots of UH60 helicopters during their flight, the rms-based and VDV(vibration dose value)-based evaluation results of measured four-axis vibration signals are shown in this work. The fatigue-decreased proficiency limit, whose level is half of the exposure limit, is expected to come after the two-hour flight. The exposure limit is shown to reach after the 10-hour flight.

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