• 대한지리학회지
• /
• 제38권6호
• /
• pp.906-921
• /
• 2003

본 연구는, 미국 지방정부의 성장관리 규제가 유발시키는 지역주택시장내 가격상승효과를 이해하기 위해, 성장관리가 가질 수 있는 주택건설 억제 효과를 실증적으로 분석했다. 실증 분석은 1980년대말 캘리포니아내 지방 정부를 대상으로 했으며. 공간계량경제 모델을 활용했다. 분석을 통해. 본 연구는 성장관리의 주택가격상승효과에 관한 기존 연구의 한계를 극복하는 데 기여하고자 했다. 즉, 캘리포니아 주와 같은 비교적 광범위한 지역에 적용되는 일반화된 결과를 얻었고. 개별 성장관리 규제가 주택건설에 미치는 영향력을 고찰했으며, 아울러 공간효과, 특히 공간적 자기상관을 분석모델에 반영시킴으로써 분석의 설명력을 제고했다. 모델링 결과, 주거용도지역내 허용개발밀도를 저하시키려는 일련의 성장관리규제는 주택건설을 억제시키는 효과를 보였다. 하지만. 주택건설 및 도시성장을 지방정부가 설정한 지역내에 한정시키는 규제는, 오히려, 주택건설을 증가시키는 효과를 보였다. 연간 인구증가 및 건축허가건수를 제한하는 규제와 주택건설업자의 공공하부구조 공급을 강제하는 법규는 주택건설에 유의한 영향을 미치지 않은 것으로 나타났다.

• Journal of Animal Science and Technology
• /
• 제63권2호
• /
• pp.199-210
• /
• 2021

A number of management issues can be used as drivers for change in order to improve animal welfare and nursing capacity of the hyperprolific sow. Group housing of sows during gestation is a recommended practice from the perspective of animal welfare. Related health issues include reproductive health and the locomotor system. It appears that management of pregnant sows in groups is challenging for a producer and considerable skill is required. We explored the benefits and challenges of group housing, including feeding issues. Increasing litter size requires additional attention to the mammary gland and its ability to provide sufficient nursing for the growing litter. We discuss the fundamentals of mammary development and the specific challenges related to the hyperprolific sow. We also address challenges with the farrowing environment. It appears that the old-fashioned farrowing crate is not only outdated in terms of welfare from the public's perspective, but also fails to provide the environment that the sow needs to support her physiology of farrowing, nursing, and maternal behaviour. Studies from our group and others indicate that providing the sow with a loose housing system adequate in space and nesting material, along with reasonable chance for isolation, can be considered as fundamental for successful farrowing of the hyperprolific sow. It has also been shown that management strategies, such as split suckling and cross fostering, are necessary to ensure proper colostrum intake for all piglets born alive in a large litter. We thus conclude that welfare and nursing capacity of the sow can be improved by management. However, current megatrends such as the climate change may change sow management and force the industry to rethink goals of breeding and, for instance, breeding for better resilience may need to be included as goals for the future.

• 지적과 국토정보
• /
• 제48권1호
• /
• pp.215-228
• /
• 2018

역세권 2030청년주택은 청년주거문제가 조명되면서 서울시가 추진해 온 관련정책 가운데 가장 효과적으로 청년층을 위한 임대주택을 공급해 오고 있다. 그럼에도 불구하고 아직까지는 그 공급량이 서울시가 당초 계획했던 목표량에 크게 미치지 못하여 충분한 정책효과를 달성하기 어려운 것이 현실이다. 본고에서는 이러한 역세권 2030청년주택의 공급부진 문제 해소를 위한 하나의 유효한 방안으로서 용도지역 상향(업조닝) 가능여부 판정을 위한 용도지역 간 인접성 판단기준이 명료하게 제시될 필요가 있다고 보았다. 이러한 맥락에서 본 연구는 용도지역 간 인접성 판단의 준거가 되는 역세권 청년주택 운영지침 상의 인접성 판별 모식도와 함께, 인접성 판단이 이미 이루어진 청년주택사업결정 공고, 고시 사례들을 중심으로 공간구문론을 활용한 공간구조 분석을 수행해보았다. 공간구조도 검토결과, 축공간도는 구성이 불가능한 것으로 판명되어 볼록공간도를 활용하였고, 볼록공간도를 활용한 결과 모든 분석 사례에 있어 깊이(Depth)가 2 이하 일 때 두 공간은 서로 인접하게 되어 용도지역 상향을 위한 용도지역 간 인접성 조건을 충족함을 알 수 있었다.

• 한국주거학회:학술대회논문집
• /
• 한국주거학회 2011년도 춘계학술발표대회 논문집
• /
• pp.290-295
• /
• 2011

The purpose of this paper was to study on the attitudes about Reverse-Mortgage among Baby Boomers to offer the basis for revitalization of Reverse-Mortgage. Social survey research using a questionnaire was conducted among the babyboomer's living in Seoul area from September $30^{th}$ to October $14^{th}$. The data from 102 respondents were analyzed using SPSS PASW 18.0. The main findings were as followings 1) although 64% of the respondents prefered to type which could withdraw temporary cash, but main factor that affected the use was a stability in one's old age 2) 72% of respondents thought adequate age for application was over 66. So lowering the qualification of age looked not need for revitalization 3) babyboomer's said that they would use reverse-mortgage if they couldn't get benefit from other pension inspite of getting lower recognition on house inheritance. It was be cause they regarded Reverse-Mortgage as a final step. In conclusion, current qualification and limit for withdraw looks adequate but it need public relations about its merit unlike other pension. And it has to emphasize its stability so that baby boomer can feel easy from holding a mortgage on their house.

• 한국주거학회논문집
• /
• 제18권3호
• /
• pp.91-102
• /
• 2007

The purpose of this study was to analyze the relationship between outdoor play environments and child's play behaviors. The data were collected by this study included field measurement survey, and non-participatory observation from 8 child care centers in Seoul. The field measurement survey were conducted from February 20 to March 20, 2005, whereas non-participatory behavior observation were conducted from June 15 to July 10, 2005. The major results showed the following. 1) Most of child care centers were too small, did not use the adequate surfacing to play various activities, and were made of play equipment setting. 2) Child's play behavior focused on functional play activity and construction play activity. 3) The relationship between outdoor play environments and child's play behaviors showed that small outside play environment with monotonous construction of play setting produced functional play behaviors on children. However, in some cases, despite the small and monotonous play area, diverse play behaviors were observed. These playgrounds at least differed from others in that they provided the place where multi purpose play was possible. This finding shows that multi purpose play areas can be an alternative in small playground environment.

• 한국물환경학회지
• /
• 제26권6호
• /
• pp.1040-1048
• /
• 2010

An infiltration storage can be installed as a method of reducing runoff from catchment and increasing stream flow during the dry period by recharging groundwater. However, there is no proper model and method that can be used to design storage capacity of an infiltration storage in Korea. The purpose of the study is to evaluate capacities of infiltration storages planned on Jeju-do in Korea by modifying Storm Water Management Model (SWMM). The basic equations for the infiltration storage are same as those of the infiltration trench used in MIDUSS. Infiltration rates of the infiltration storages were first measured by double ring infiltrometers, and then the modified model was applied to evaluate adequacy for the capacities of three infiltration storages planned on Jeju-do in Korea. The application results show that the two infiltration storages with higher infiltration rates have adequate capacities to infiltrate the total water inflow to the storages. However, the other infiltration storage with lower infiltration rates has not sufficient capacity to infiltrate the total water inflow to the storage and release occurs to the downstream region. The simulation model and method applied can be used for capacity evaluation of future infiltration storages on highly pervious areas in Jeju-do.

• 한국농촌건축학회논문집
• /
• 제20권1호
• /
• pp.1-10
• /
• 2018

In order to give back-to-farm residents the stable settlement environment in the rural area, the 'community village' is desirable as the village type and its village planning guideline should be supported as well. The purpose of this study was to develop a guideline for the planning of back-to-farm community village in the living and social environmental aspects, based on the comprehensive comparative analysis about items that field survey and literature suggested. The guideline for the living environment was developed for 6 items; village structure(adequate size, lot, outer space for household), village landscape(allocation, space composition), road system and transportation(parking lot in village, placement of bus stops, village trail, public transportation, road and pedestrian system), common living facilities and common space(number, size, location & placement, plan type, planning type of common facilities), transfer space, individual housing(type, size, planning type). The guideline for the social environment was developed for 3 items; village making and establishment(resident participation type, resident participation tool, residents' construction participation) and resident education in the course of planning, resident participation(gathering resident opinion, decision making, composition of construction committee, community newsletter).

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 1993년도 Proceedings of International Conference for Agricultural Machinery and Process Engineering
• /
• pp.686-695
• /
• 1993

A flywheel-type, inclined axis chopper for small-area rice and livestock farmers, has been developed at IRRI Agricultural Engineering, The prototype is belt-driven by a 2.6kW engine and uses four angled blades rotating below a fixed counteredge. Manual feeding is facilitated by a convenient spout presenting the crop to the inclined blade housing and also suction created by the rotating blades . The distance between the rotating blades and the bottom of the housing determines the length of chops, set here for 25 cm. The unit would cost $200 without the engine. Tests with napier grass, corn stalks , and rice straw showed satisfactory performance within the acceptable clearance, speed and moisture content ranges of the material presented. Highest capacities were 1186, 1148 and 744kg/hr for napier grass, corn stalks and rice straw, respectively. Corn stalks required the highest power demand at 2.3kW engine would be adequate as power source. The chopper performance was comparable to higher cost commercial chippers in terms of capacity and specific energy.

• 한국자동차공학회논문집
• /
• 제17권1호
• /
• pp.80-86
• /
• 2009

Main bearing cap is one of the essential structural elements in internal combustion engine. Main bearing cap guides and holds the crankshaft, withstanding the full combustion and inertia loads of the engine. A seamless design methodology using FEA has been proposed to produce a reliable design of main bearing cap. A Levy's thick cylinder model was applied to calculate the contact pressure between bearing shell and housing bore. A calculated contact pressure at housing bore is within the allowed limit comparing with that from bearing shell model. An adequate FEA model was suggested to obtain reliable solutions for the durability of main bearing cap. 3D global model consists of engine bulkhead, main bearing cap, and bolts. Sub-model consisting of cap and part of bolts is used to get detailed solution of main bearing cap. A very careful contact modeling practice is needed to resolve the convergence problems frequently encountering during combined geometric and material non-linear problems. A proposed methodology has been applied to the main bearing cap model successfully and obtained reliable stress results and fatigue safety factors.

• 한국학교보건학회지
• /
• 제36권2호
• /
• pp.52-61
• /
• 2023

Purpose: The purpose of the study was to compare the characteristics between adolescents who have run away from home before and who have contemplated running away from home before, and to find risk factors that predict runaway behavior among them. Methods: The data of 「the survey on adolescents' right to adequate housing and the way to ensure their housing with the focus on social exclusion」 by the National Youth Policy Institute (2020) were analyzed. A total of 494 adolescents were included in the study. Descriptive statistics, x2 test, t-test, and simple and multiple logistic regressions were carried out using SAS 9.2. Results: Gender, depression, anxiety, self-esteem, and school level were significantly different between the two groups. From the multivariate analysis, the adjusted odds ratio for runaway behavior was significantly higher in male students (AOR: 2.14, p<.001), lower in the middle economic class than in the high economic class (AOR: 0.64, p=.051), lower in the 4th quartile group of self-esteem (AOR: 0.52, p=.041), and higher in high school students (AOR: 1.55, p=.050). Conclusion: Considering that male students, students from wealthier families, students with low self-esteem, and high school students are high-risk groups for runaway behavior, among adolescents who have contemplated running away before, interventions targeting these groups are needed.