• Title/Summary/Keyword: Housing Behaviors

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Effect of Individual, Group or ESF Housing in Pregnancy and Individual or Group Housing in Lactation on Sow Behavior

  • Weng, R.C.;Edwards, S.A.;Hsia, L.C.
    • Asian-Australasian Journal of Animal Sciences
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    • v.22 no.11
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    • pp.1574-1580
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    • 2009
  • To evaluate the effect of different housing systems on sow behavior, 80 gilts were randomly allocated at puberty to four treatments: i) sow stall in gestation followed by farrowing crate (SC), ii) group housing with individual feeding in gestation followed by farrowing crate (GC), iii) ESF (Electronic Sow Feeding) system in gestation followed by farrowing crate (EC), and iv) ESF system followed by group farrowing pen (EG). Behavioral observations were carried out on a total of 16 animals per treatment at the following stages: first day of allocation to housing treatment, day of service, 80 days after service, 109 days after service on entry to farrowing accommodation, 24 h before farrowing, day of farrowing, 14, 27 and 28 days after farrowing, at weaning. On each occasion, individual animals were observed for a 24 period with one minute time sampling. There were significant differences (p<0.001) between stages of the reproductive cycle for all the behavior patterns in all treatments. On the first day in experimental housing treatments, sows spent more time rooting and dog-sitting. Activity and investigatory behavior decreased as pregnancy progressed. An activity peak was apparent just before farrowing, followed by a high level of inactivity on the day of farrowing. Time spent active, eating and drinking increased as lactation progressed, and greatest activity and locomotion was seen immediately following weaning. There were significant differences between housing treatments (p<0.01) for standing, moving, eating, drinking, dog-sitting and lying. During pregnancy SC sows spent more time standing, rooting, drinking and dog sitting, while EC sows spent less time rooting and drinking and more time lying. During lactation, GC sows spent more time standing, moving and eating, less time dog sitting and lateral lying. Nursing frequency was reduced in GC sows (p<0.001). The maternal and piglet behaviors were influenced strongly by environment during lactation. However, it was also shown that previous housing history can influence the maternal behavior in the pre-farrowing stage and during early lactation.

Study on the Recycling of Furniture and Household Electric Appliances (가구와 가전제품의 재활용에 관한 연구)

  • 권오정;김시월;이혜임;이명숙;이진영
    • Journal of the Korean housing association
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    • v.10 no.1
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    • pp.21-35
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    • 1999
  • The purposes of the study were: 1) to classify and describe causes of producing wasted furniture and household electric appliances by consumers, 2) to identify the influence of variables on causes of producing wasted furniture and household electric appliances and experience of consumer's recycling behaviors, and 3) to introduce the ways of activating recycling in wasted furniture and household electric appliances which suggested by consumers. 1,132 housewives living in Seoul, Sungnam, and Choongjoo were used as a final sample of the analysis. Data were collected using a self-administered survey. The result of the study indicated the major variable which affects producing wasted furniture and household electric appliances was the perception of recycling. Also, the level of consumers' recycling behavior in furniture and household electric appliances was very low and age and housing type were the major variables which affect consumers' recycling behavior. Finally, the implications and recommendations for consumers, enterprises, and society were suggested.

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Meanings and Expressions of Territoriality and Privacy in Traditional Korean Housing (조선시대 반가에 나타난 영역성과 사밀성 구축 방법에 관한 연구)

  • Shim Eun-ju;Kwon Young-Gull
    • Korean Institute of Interior Design Journal
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    • v.14 no.5 s.52
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    • pp.3-9
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    • 2005
  • Territoriality and privacy are known to be basic human instincts that have made today's cultural evolution possible. However there are also cultural differences in the expressions and meanings of territorial and privacy behaviors. Currently with the emerge of non-territorial workplaces office workers are deprived from what used to be their territory and force to share with co-workers leading confusion and stress. Therefore many research has be conducted on territorial issues but unfortunately little is known on Korean cultural concept of territoriality and privacy. Eyen though Korean society has been rapidly westernized during the 20th century, traditional culture still is a major influence on Korean's concept and use of space. This study explores and investigates the concept of territoriality and privacy and how they are expressed in traditional Korean housing focused on high level society between 17th and 19th century. Thus hope make a small contribution in designing unique and culture based interior spaces.

Die Casting Process Design of Automobile Gear Housing by Metal Flow and Solidification Simulation (탕류 및 응고 해석을 통한 자동차 Gear Housing의 다이캐스팅 주조공정 설계)

  • Park, Jin-Young;Kim, Eok-Soo;Park, Ik-Min
    • Journal of Korea Foundry Society
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    • v.24 no.6
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    • pp.347-355
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    • 2004
  • In the die casting process, the flow of liquid metal has significant influence on the quality of casting products and die life. For the optimal process design of automobile gear housing, various analyses were performed in this study by using computer simulation code, MAGMAsoft. The simulation has been focused on the molten metal behaviors during the mold filling and solidification stages for the sound casting products. Also the internal defects were predicted by application of air pressure and feeding criteria.

Effects of Replacement Ratio of Recycled Coarse Aggregate on the Shear Performance of Reinforced Concrete Beams without Shear Reinforcement

  • Yun, Hyun-Do;You, Young-Chan;Lee, Do-Heon
    • Land and Housing Review
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    • v.2 no.4
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    • pp.471-477
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    • 2011
  • This paper will describe the experimental results on the shear behaviors of reinforced concrete (RC) beam with recycled coarse aggregate (RCA). The primary objective of this research is to evaluate the influences of different RCA replacement percentage (i.e, 0%, 30%, 60%, and 100%) on the shear performance of reinforced concrete beams without shear reinforcement. Eight large-scale RC beams without shear reinforcement were manufactured and tested to shear failure. All had a rectangular cross-section with 400mm width ${\times}$ 600mm depth and 6000mm length, and were tested with a shear span-to-depth of 5.1. The results showed that the deflection and shear strength were little affected by the different RCA replacement percentage. Actual shear strength of each RCA beam was compared with the shear strength predicted using the provisions of ACI 318 code and Zsutty'e equation for shear design of RC beams. ACI 318 code predicted the shear strength of RCA reinforced concrete beams well.

Rediscovering A Path to Aging in Place: Development of Housing Cooperatives for Rural Elderly

  • Lee, Hyun-Jeong
    • Architectural research
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    • v.13 no.3
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    • pp.31-40
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    • 2011
  • Profit-keeping behaviors naturally occur in the market to satisfy consumers, and the logic behind it lies in the economies of scale. On the flip side, some commodities transacted in the market are not available or can not be easily acquired unless the demand is high enough. Under this proposition, some consumers rise and find their own solution to meet the services at a reasonable cost or at an adequate level. The commonly adopted way is to establish a cooperative, and it stirs purchasing power by pooling resources and further bargains price and service quality. As a consumer cooperative, housing cooperatives notably found in rural towns enable the elderly to continue independent living. This study is to take a closer look at residential life of the rural elderly in housing cooperatives. Utilizing in-depth focus group interviews with 40 residents in four housing cooperatives, this qualitative research draws main factors affecting the decision to move in, residential assessment, and strengths and weakness of living in a housing cooperative. The primary factor influencing the moving decision is to continue to independent living in a familiar community, and the bottom line is planning ahead. Frailty and bereavement are found to be the leading occasions for them to move. The participants are satisfied with the independent living arrangement, and particularly, cited such features as safety and security, elderly-friendly design, common spaces, freedom, social activities and efficient living. Also, it is stated that some cooperative natures such as control over the property and giving a voice on management render positive impacts on the satisfaction with communal living. In spite of all the benefits and strengths, participants face with a public notion that an independent living arrangement like a housing cooperative has never done before in rural towns, so that most people recognize it as part of dependent living arrangements like nursing home.

Management factors affecting gestating sows' welfare in group housing systems - A review

  • Jang, Jae-Cheol;Oh, Sang-Hyon
    • Animal Bioscience
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    • v.35 no.12
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    • pp.1817-1826
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    • 2022
  • Public concern on the methods of raising food-producing animals has increased, especially in the last two decades, leading to voluntary and mandated changes in the animal production methods. The primary objective of these changes is to improve the welfare of farm animals. The use of gestational stalls is currently a major welfare issue in swine production. Several studies assessed the welfare of alternative housing systems for gestating sows. A comparative study was performed with gestating sows housed in either individual stalls or in groups in a pen with an electronic sow feeder. This review assessed the welfare of each housing system using physiological, behavioral, and reproductive performance criteria. The current review identified clear advantages and disadvantages of each housing system. Individual stall housing allowed each sow to be given an individually tailored diet without competition, but the sows had behavioral restrictions and showed stereotypical behaviors (e.g., bar biting, nosing, palate grinding, etc.). Group-housed sows had increased opportunities to display such behavior (e.g., ability to move around and social interactions); however, a higher prevalence of aggressive behavior, especially first mixing in static group type, caused a negative impact on longevity (more body lesions, scratch and bite injuries, and lameness, especially in subordinate sows). Conclusively, a more segmented and diversified welfare assessment could be beneficial for a precise evaluation of each housing system for sows. Further efforts should be made to reduce aggression-driven injuries and design housing systems (feeding regimen, floor, bedding, etc.) to improve the welfare of group-housed sows.

Influence of Parents' Family-of-Origin Experiences on Parenting Behaviors : Focusing on Parents with Young Children (부모의 원가족 경험이 양육행동에 미치는 영향 : 유아기 자녀를 둔 부모를 대상으로)

  • Jeon, Joo-Hye;Park, Jeong-Yun;Kim, Yang-Hee;Chang, Young-Eun;Auh, Seong-Yeon
    • Journal of Families and Better Life
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    • v.28 no.2
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    • pp.1-15
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    • 2010
  • This purpose of study is the effects of parents' family-of-origin experience on their parenting behaviors of 260 parents with child(ren) aged between 3-7. The results were as follows: First, father's with higher monthly average income showed more frequent responsive parenting behaviors. Mothers with different age, income, employment status, employment of their mother in the family of origin, and current family types showed different levels of limit-setting, intimacy, and responsivenss in their parenting. Second, both parents' experiences from their family of orgin were correlated their parenting behaviors. Third, regression analysis revealed that mothers were found to give their children more reasonable guidance if they experienced more independence from their parents and more acceptance from their mothers, if they raise more than two kids, and if their family of origin was an extended type. Fathers who perceived higher family of health, more acceptance by their mothers showed more limit setting parenting behavior.

Contact Stress Analysis of an O-ring Seal in a Dovetail Groove (도브테일 그루브에 장착된 O-링시일의 접촉응력에 관한 연구)

  • 김청균;황준태
    • Tribology and Lubricants
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    • v.16 no.2
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    • pp.138-143
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    • 2000
  • The sealing performance of an elastomeric O-ring seal with a temperature gradient has been analyzed for the contact stress behaviors that develop between the O-ring seal and the housing surfaces with which it comes into contact in the dovetail groove. The leakage of an O-ring seal will occur when the pressure differential across the seal just exceeds the initial peak contact stress. The contact stress behaviors that develop in compressed O-rings, in common case of restrained geometry (grooved), are investigated using the finite element method. The FE analysis includes material hyperelasticity and axisymmetry The computed FEM results show that the contact stress behaviors are related to a compression rate and a temperature gradient between the vacuum chamber with a dovetail groove and the contacting plate with a cooling jacket.