• Title/Summary/Keyword: physical conditions

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A Study on the Quality Improvement of Housing Environment in Low-Income Families of Daejeon Area (대전지역 저소득층 주거환경의 질적인 개선에 관한 연구)

  • 이정희
    • Journal of the Korean Home Economics Association
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    • v.28 no.2
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    • pp.57-72
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    • 1990
  • The purpose of this study were ; (1) to analyze the relationship between actual housing condition and housing satisfaction with socio-demographic and housing characteristics of respondents and (2) to present the device on the quality of housing environment in low-income families. The sample was a proportional, stratified, random sample of 299 low-income families in Deajeon. The major findings were as follows: 1) The wholey, actual housing conditions were not good; especially the worst conditions appeared exterior walls, roof, kitchen, bath and toilet, heating, noise, recreation facilities as play-ground. 2) Actual housing condition has been found to be related to income, tenure(rent or own), persons/room. In the relation of the socio-demographic and housing characteristics, actual housing condition, housing satisfaction, income and persons/room were found to be a significant explanatory variable in actual housing condition. And actual housing condition ws appeared to be the strongest variable in housing satisfaction. 3) Housing of the low-income families should be improved physical aspects of the environment and be reflected in need of the occupant that based on the social-welfare housing concept.

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Strain hardening behavior of linear polymer melts

  • Hong Joung Sook;Ahn Kyung Hyun;Lee Seung Jong
    • Korea-Australia Rheology Journal
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    • v.16 no.4
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    • pp.213-218
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    • 2004
  • Linear high-density polyethylene (PE) was controlled to induce strain-hardening behavior by introducing a small amount of second component with an anisotropic structure. In order to form an anisotropic structure in the PE matrix, the polymer was extruded through a twin-screw extruder, and the structure was controlled by varying the extrusion conditions. Depending on conditions, the second component formed a film, thread and droplet structure. If the second component was kept rigid, the morphology evolution could be delayed and the second component could maintain its film or thread structure without further relaxation. In par­ticular, the second component of the thread structure made a physical network and gave rise to remarkable strain hardening behavior under high extension. This study suggests a new method that induces strain hard­ening behavior by introducing a physically networked second component into the linear polymer melt. This result is anticipated to improve the processibility of linear polymers especially when extensional flow is dominant, and to contribute to our understanding of strain hardening behavior.

A Study on the LCD(Liquid Crystal Display) Device which have MIM (Meta1-lnsulator- Meta1) Structure (MIM(Metal-Insulator-Metal)구조의 LCD(Liquid Crystal Display)소자 특성 연구)

  • 최광남;이명재;곽성관;정관수;김동식
    • Proceedings of the IEEK Conference
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    • 2001.06b
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    • pp.209-212
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    • 2001
  • High quality Taros thin films have been obtained from anodizing. The as-deposited amorphous films have excellent physical and electrical properties: refractive indices ~2.15, dielectric constants ~25, and leakage currents <10$^{-8}$ Ac $m^{-2}$ at 1MV $cm^{-1}$ , 700$\AA$ thickness. We fabricated a MIM element with theses T $a_2$ $O_{5}$ films which had perfect current-voltage symmetry characteristics using a new process technology which was post annealing of whole MIM element instead of conventional annealing conditions (top-electrode metals, annealing conditions) on the capacitor performances were extensively discussed throughout this work.k.

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Anti-angiogenic Activity of Ursolic Acid (우르솔릭산의 혈관형성 억제활성)

  • 손경희;이옥희;이열남;정해영;이정준;김규원
    • YAKHAK HOEJI
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    • v.37 no.5
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    • pp.532-537
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    • 1993
  • Angiogenesis refers to the formation of new capillary blood vessels, or neovascularization occurring under various physical conditions, such as development of the embryo, formation of corpus luteum, wound healing and pathological conditions including tumor growth and metastases, hemangiomas, diabetic retinopathy, rheumatoid arthritis. There are many evidences that angiogenesis is important for the progressive growth of solid tumors and also permits the shedding of metastatic tumors from the primary site. Thus, treatment of angiogenesis inhibitors might be a novel strategy for tumor growth inhibition. Normal vascular endothelial cells are in a state of differentiation and angiogenic endothelial cells migrate and proliferate, and they subsequently differentiate into vessel-forming quiescent phenotype cells, Therfore, it was speculated that a modifier of cell differentiation could also affect angiogenesis. In order to identify new antiangiogenic factors, the research was conducted to estimate the inhibitory activities of cell differentiation agents by means of chick embryo chorioallantoic membrane(CAM) assay. Hence, we have established the CAM assay for the screening of antiangiogenic agents. Using the CAM assay, we found that ursolic acid, a tumor cell differentiation-inducing agent, showed a markedly inhibitory effect on chick embryonic angiogenesis.

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A Note on the Outflow Boundary Conditions in Modeling the East Sea Circulation

  • Seung, Young-Ho;Cho, Kyoung-Ho
    • Journal of the korean society of oceanography
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    • v.33 no.4
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    • pp.212-218
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    • 1998
  • Three different outflow boundary conditions are considered in modeling the East Sea circulation. The first one is that of the conventional constant volume transport (CT). The second one is the Orlanski radiation boundary condition (OR). The third one is that of the constant sea level just outside the outflow boundary (SL). In the third condition, the outflow current is set to be driven by the sea level differences across the outflow open-boundary lines, based on the recent knowledge that the Tsushima Current is driven by the sea level differences across the inflow and outflow boundaries. In case of OR it takes too much time to reach the steady state, resulting in a large increase of Tsushima Current Water in the basin and low level of kinetic energy. Both CT and SL reach the steady state in a relatively short time. However, SL is more recommendable, because it is based on physical background and generates less numerical noises than CT.

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Screening of Voice Disorder using Source Parameter Model and Artificial Neural Network (음원 파라미터 모델과 인공신경망을 이용한 음성장애 검출)

  • Chytil, Pavel;Jo, Cheol-Woo;Pavel, Misha
    • Speech Sciences
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    • v.15 no.2
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    • pp.89-97
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    • 2008
  • There is a number of clinical conditions that affect directly or indirectly the physical properties of the vocal folds and thereby the pressure waveforms of elicited sounds. If the relationships between the clinical conditions and the voice quality are sufficiently reliable, it should be possible to detect these diseases or disorders. The focus of this paper is to determine the set of features and their values that would characterize the speaker's state of vocal folds. To the extent that these features can capture the anatomical, physiological, and neurological aspects of the speaker they can be potentially used to mediate an unobtrusive approach to diagnosis. We will show a new approach to this problem supported with results obtained from two disordered voice corpora.

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Analysis of Living Space of One Room Housing Through Plan of House (주택 평면을 통한 원룸 주거 공간 분석 - 사례를 중심으로 -)

  • Kim, Han-Soo
    • Journal of the Korean housing association
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    • v.25 no.3
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    • pp.145-153
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    • 2014
  • This study analyzes the physical environments of studio-housing and suggests alternative solutions for the problems of studio-housing. Based on solving the problems of it through previous research review, the research methods are decided on-site survey and the housing floor plan analysis. The results of this study are follows. First, parking lots make passengers uncomfortable. Narrow spaces between buildings cause problems in terms of light, ventilation, and privacy. Moreover, the short of green space makes living conditions less amenable. Second, the narrow corridors of studio-housing buildings bring about bad effects on walking and privacy. The living conditions becomes worse due to the illegal remodeling. Third, even though a multi-family housing provision for low or middle-income families is a good housing policy, new design policies or interventions are needed to make residents' behavior comfortable.

A Study of Current Conditions and Future Tasks of One-room Housing (원룸주거의 현실과 과제에 관한 연구)

  • Kim, Han-Su
    • Journal of the Korean housing association
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    • v.24 no.1
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    • pp.61-68
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    • 2013
  • This study tries to provide fundamental policy information for one-room housing by analyzing current living conditions of one-room housing near a university. For this purpose, this study conducts on-site survey as well as residents' survey. The main findings are follows. First, some one-room houses have been converted from single-family houses. Pilotis are often used as parking lots in newly built one-room houses. There are illegal equipments and illegal parkings around one-room village. Second, residents satisfy with proximity to workplace. However, they show strong dissatisfaction with physical environment such as noise, air flow, waste disposals. In particular, they feel very uncomfortable with gloomy lights and fear about potential crime. Third, residents like their independent lives, but complain about narrow living space and unprotected privacy. In addition, many of them feel lonely due to lack of public space in which residents can communicate.

Lymphadenopathy (림프절 종대)

  • Chung, Nack-Gyun
    • Clinical and Experimental Pediatrics
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    • v.51 no.8
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    • pp.797-803
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    • 2008
  • Lymphadenopathy is a common problem in children and adolescents. A wide variety of diseases and conditions may present as lymphadenopathy and an understanding of these conditions is essential to determine the most appropriate diagnostic work-up for each patient. A detailed history and physical examination with careful attention to the anatomical regions drained by the involved lymph node or mass often leads to the appropriate diagnosis. A majority of these children will prove to have a benign disorder; however, it is important for the pediatrician to have an appreciation for the malignant diseases or serious systemic illnesses that may initially present with lymphadenopathy, to ensure the timely diagnosis of a serious disease.

The Deposition of Platinum Thin Films for RTD and its Characteristics (측온저항체 온도센서용 백금 박막의 증착과 그 특성)

  • 정귀상;노상수
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1996.05a
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    • pp.224-227
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    • 1996
  • Platinum thin films were deposited on Si-wafer by DC magnetron sputtering for RTD (Resistance Thermometer Devices). We investigated the physical and electrical characteristics of these films under various conditions, the input power, working vacuum, temperature of substrate and also after annealing these films. The deposition rate was increased with increasing the input power but decreased with increasing Ar gas pressure. The resistivity were decreased wish increasing the temperature of substrate and the annealing time at 1000$^{\circ}C$. At substrate temperature 300$^{\circ}C$, input power 7(w/$\textrm{cm}^2$), working vacuum 5mtorr and annealing conditions 1000$^{\circ}C$, 240 min we obtained 10.65${\mu}$$.$cm, resistivity of Pt thin film closed to the bulk value.

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