• Title/Summary/Keyword: Particular matter

Search Result 390, Processing Time 0.023 seconds

Study of Annoyance in Relation to Exposure Time to Demonstration Noise (집회소음 노출시간에 따른 성가심도 연구)

  • Park, Hyung-Woo;Bae, Myung-Jin
    • The Journal of the Institute of Internet, Broadcasting and Communication
    • /
    • v.16 no.6
    • /
    • pp.103-108
    • /
    • 2016
  • The size of urban areas is currently growing and the functions of cities are becoming increasingly complicated. Furthermore, more people are living in cities. The life of urban is getting closer and linked with neighboring people in many parts. In particular, people are making artificial noise, even though it might not consciously be noticed, in their daily live. Seoul is the most crowded place in Korea and the noise levels are 73dB or higher. People living in cities are exposed to noise pollution. In particular, loudspeakers used during demonstrations or to generate publicity, cause considerable noise, which in turn can be related to stress. Moreover, the noise restrictions defined by law are not adhered to. If enhanced noise regulations, no matter how residents are not forced to be a great stress field close to the noise and reduces the loudness -5dB do not feel well if the difference. Limiting the duration of noise rather than reducing the volume thus is a much more plausible way of reducing the damage caused by noise pollution. If the stress caused by the noise, you will see people or vehicles holding a megaphone at the roadside is not good for health if it may be a wise way to live that is getting rid of the noise pollution so quickly out of the area.

Current on the Heat Loss in Greenhouses during Winter Season - Case Study Based on Gyeongnam Area - (동절기 온실의 열 손실에 관한 실태조사 - 경남지역을 중심으로 -)

  • Im, Jae Un;Yun, Sung Wook;Kim, Hyeon Tae;Yoon, Yong Cheol
    • Journal of Bio-Environment Control
    • /
    • v.22 no.1
    • /
    • pp.73-79
    • /
    • 2013
  • An experiment was conducted to study incidences of heat loss in greenhouse in Gyeongnam province using thermal imaging camera in order to determine ways minimizing greenhouse heat loss. Measurements of this work showed that temperature differences between two experiment zones before and after installation of thermal curtains were about $2.0{\sim}3.0^{\circ}C$ and $1.0{\sim}2.0^{\circ}C$ respectively. There was a high correlation between the temperature data measured using a thermal imaging camera and a temperature sensor. There was no serious difference among areas, but between places on the first and second floor with thermal curtains for heat insulation, there was a relatively larger heat loss on the first floor than the second floor. Then in general the greenhouse types had no particular bearing on this matter, there was a relatively large heat loss in the parts of side wall window, the gaps and the parts folded of horizontal thermal curtains, the gutter parts, and the gaps of thermal curtain in the side wall window and facade back side for heat insulation, aren't completely sealed. It was found that there was a substantial heat loss due to infiltration through cracks on covering material, doors, ventilating openings, roof gables and floors, in particular.

A Case Study of a Teacher's Pedagogical Content Knowledge Development in Teaching Science : Focusing on the Relationship between Knowledge Domains (과학 교수를 위한 교사의 교과교육학 지식의 발달 : 지식 영역간의 관계를 중심으로)

  • Suh, Ye-Won
    • Journal of Korean Elementary Science Education
    • /
    • v.25 no.4
    • /
    • pp.430-453
    • /
    • 2006
  • The purpose of this study was to explore how an elementary school teacher developed PCK by utilizing her knowledge domains in teaching practice, regarding the specific science topic of 'animals:' A case study approach was adopted with the participation of a 1st grade teacher, in a poor urban neighborhood elementary school in NYC. Data was collected through interview and the participant observation method in order to investigate: a) the teacher's existing knowledge base in terms of subject matter knowledge, pedagogical knowledge and contextual knowledge; b) how she develops PCK during classroom practice, centering on the relationship between knowledge domains. The findings illustrate the ways in which the three knowledge domains are closely related and developed as PCK through the whole teaching process. In particular, the findings indicate that the teacher's contextual knowledge plays a critical role in shaping and developing PCK. Before instruction, her contextual knowledge regarding the administrative policies and the school test system in the district enabled her to make decisions and plans about teaching science. During classroom teaching, her knowledge of students' sociocultural backgrounds and living conditions in the urban setting helped her to identify specific teaching strategies and resources suitable to the students' needs and interests. The study results imply that science instruction can be more feasible in meeting the demands of particular groups of students if teachers make an effort to become knowledgeable about their own teaching context and utilize it in developing their PCK.

  • PDF

Subject Sense, Sensibility and Preference Evaluation of Fancy Yarns for Hand Knitting (수편용 장식사의 주관적 감각과 감성평가 및 선호도)

  • Kim, Mi-Jin;Park, Key-Yoon;Park, Myung-Ja
    • Journal of the Korea Fashion and Costume Design Association
    • /
    • v.13 no.1
    • /
    • pp.11-20
    • /
    • 2011
  • The yarn company needs to conform to the consumers' sensibility, which has become diverse, in developing its yarn, which fixes the matter property and the sensibility in knit product. In particular, the development of fancy yarn, which is expected to have great influence upon the sensibility of material due to being a diverse form of knit yarn, may increase activation of the knit industry. Eight different fancy yarns were chosen: loop, Ratine, tam tam, fur 1, fur 2, chenille, ladder and tape yarn. The manufacturing methods of these yarns are all different. The sensibility was evaluated through a questionnaire targeting 60 women in their 20s of the expert group. Factor analysis, reliability, correlation analysis, ANOVA, Duncan, and regression analysis were carried out by using SPSS 12.0. First, according to the results of analyzing the sense factor, three factors were extracted: 'inflexibleness/rugged', 'lightweight' and 'smooth'. 'Activity', 'grace' and 'purity' were extracted in regard to the sensibility factor. H3(tam tam) sample showed high value in all of preference, purchase intention and word-of-mouth intention. To increase consumers' preference, purchase intention, and word-of-mouth intention, its effect is thought to be likely to be possibly seen only when increasing the factor of pure and simple grace and when reducing the hard and stiff inflexibleness/ruggedness sense. It is expected to be likely to possibly secure marketability as knit product, which has product competitiveness, given the product planning in a company of producing knit.

  • PDF

Conservation of Vietnam war Homecoming box in National museum of Korean contemporary history (대한민국역사박물관에 소장된 베트남전 귀국상자의 보존처리)

  • Kim, Soo Chul;Jang, Eun Jeong;Ahn, Jooyoung
    • 보존과학연구
    • /
    • s.35
    • /
    • pp.121-127
    • /
    • 2014
  • The Vietnam homecoming box that has been collected in National Museum of Korean The Vietnam homecoming box that has been collected in National Museum of Korean Contemporary History got severely damaged such as rot, attached foreign substance, fading, color, wood decay. In particular, the bottom of the box was unstable state that deteriorated by pests and the left strut was severely damaged by some deep cracks and pests. The metal bands were remained on the side and bottom of the box, and all the bands were seriously corroded. On the bottom-right of the lid, black foreign matter was adhered to the surface. In the process of conservation treatments, the cleaning, filling cracks, reinforcing the bottom of the box, attaching the metal bands were proceed in order after the investigation of the state.

  • PDF

New Development of Methods for Environmental Impact Assessment Facing Uncertainty and Cumulative Environmental Impacts (불확실성과 누적환경영향하에서의 환경영향평가를 위한 방법론의 새로운 개발)

  • Pietsch, Jurgen
    • Journal of Environmental Impact Assessment
    • /
    • v.4 no.3
    • /
    • pp.87-94
    • /
    • 1995
  • At both international and national levels, such as in the Rio Declaration and the EU's Fifth Environmental Action Plan, governments have committed themselves to the adoption of the precautionary principle (UNCED 1992, CEC 1992). These commitments mean that the existence of uncertainty in appraising policies and proposals for development should be acknowledged. Uncertainty arise in both the prediction of impacts and in the evaluation of their significance, particularly of those cumulative impacts which are individually insignificant but cumulatively damaging. The EC network of EIA experts, stated at their last meeting in Athens that indirect effects and the treatment of uncertainty are one of the main deficiencies of current EIA practice. Uncertainties in decision-making arise where choices have been made in the development of the policy or proposal, such as the selection of options, the justification for that choice, and the selection of different indicators to comply with different regulatory regimes. It is also likely that a weighting system for evaluating significance will have been used which may be implicit rather than explicit. Those involved in decision-making may employ different tolerances of uncertainty than members of the public, for instance over the consideration of the worst-case scenario. Possible methods for dealing with these uncertainties include scenarios, sensitivity analysis, showing points of view, decision analysis, postponing decisions and graphical methods. An understanding of the development of cumulative environmental impacts affords not only ecologic but also socio-economic investigations. Since cumulative impacts originate mainly in centres of urban or industrial development, in particular an analysis of future growth effects that might possibly be induced by certain development impacts. Not least it is seen as an matter of sustainability to connect this issue with ecological research. The serious attempt to reduce the area of uncertainty in environmental planning is a challenge and an important step towards reliable planning and sustainable development.

  • PDF

Do Creativity and Intellectual Capital Matter for SMEs Sustainability? The Role of Competitive Advantage

  • SRIKALIMAH, Srikalimah;WARDANA, Ludi Wishnu;AMBARWATI, Diana;SHOLIHIN, Ustadus;SHOBIRIN, Rizky Arief;FAJARIAH, Nuraidya;WIBOWO, Agus
    • The Journal of Asian Finance, Economics and Business
    • /
    • v.7 no.12
    • /
    • pp.397-408
    • /
    • 2020
  • SMEs as an organization to succeed and to be sustainable must have the most essential and strategic capital, namely creativity, competitive advantage, and intellectual capital. This study aims to explore how creativity and intellectual capital determines SMEs' sustainability as well as examine the emerging role of competitive advantage in supporting this relationship. A quantitative method was applied to gain a better understanding of the relationship between variables undergoing Structural Equation Modeling with Partial Least Square (SEM-PLS). This study collected data from 123 SMEs in East Java of Indonesia using an online survey. The approach adopted in this study is a convenience random sampling method, which is widely used in entrepreneurship and SMEs' sustainability research. The findings showed that intellectual capital positively affects both competitive advantage and SMEs' sustainability. Additionally, the result of this study confirms a robust relationship between intellectual capital and SMEs' sustainability. However, partially, creativity failed in explaining SMEs' sustainability. Furthermore, this study confirmed that competitive advantage has successfully mediated both the influence of creativity and intellectual capital to SMEs' sustainability. Although this research only involved participants in East Java, this study can be the first step for relevant research of SMEs' sustainability, in particular, in Indonesia.

Past and Present Definitions of the Energy and Protein Requirements of Ruminants

  • Corbett, J.L.;Freer, M.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.16 no.4
    • /
    • pp.609-624
    • /
    • 2003
  • The genesis of methods for defining the nutritional value of feeds and the nutrient requirements of animals, and their development in the late 19th and early 20th centuries in Europe and the USA are outlined. Current energy and protein feeding systems for ruminants are described. Particular reference is made to the Australian systems which are applicable to grazing animals as well as to those given prepared feeds, and enable the effective nutritional management of a imals at pasture by means of the decision support tool GrazFeed. The scheme for predicting intakes by cattle and sheep from pastures allows for the effects of selective grazing on the composition of the feed eaten, and for reduction in herbage intake when a supplementary feed is consumed. For herbage of any given concentration of metabolizable energy (ME) in the feed dry matter the changes with season of year in the net efficiency of use of the ME for growth and fattening and in the yield of microbial crude protein, g/MJ ME, which both vary with latitude, are defined. An equation to predict the energy requirements for maintenance (MEm) of both cattle and sheep includes predictions of the additional energy costs incurred by grazing compared with housed animals and the cost, if any, of cold stress. The equation allows for the change in MEm with feed intake. A flexible procedure predicts the composition of liveweight gain made by any given breed or sex of cattle and sheep at any stage of growth, and the variation with rate of gain. Protein requirements for maintenance, production including wool growth, and reproduction, are related to the quantities of microbial true protein and undegraded dietary protein truly digested in the small intestine.

Measurement of Aluminum Liner Internal Defect Deformation and Strain Using Shearography and FEM Verification (Shearography를 이용한 Aluminum Liner 내부 결함의 변형량과 변형율 측정 및 FEM 검증)

  • Choi, In-Young;Hong, Kyung-Min;Ko, Kwang-Su;Kang, Young-June
    • Journal of the Korean Society of Manufacturing Technology Engineers
    • /
    • v.22 no.4
    • /
    • pp.686-692
    • /
    • 2013
  • Today, environmental issues have become a matter of worldwide concern. In particular, automobile industries engage in considerable research and investment to develop high-efficiency and ecofriendly cars. Most ecofriendly cars use natural gas or hydrogen gas instead of fossil fuels. In this regard, low-weight and high-pressure vessels have gradually been developed to increase the driving distance of a car. However, most pressure vessels installed in cars develop many defects over time owing to shocks sustained when the car is being driven. Such defects can cause the explosion of the pressure vessel. Therefore it is important to prevent such explosions due to internal defects. The use of shearography for measuring the internal defects of objects afford many advantages. It is a non-contact and non-destructive method, and it is not limited by the object shape. In this study, the internal defect deformation and strain of an aluminum liner that is used in a CNG bus for the fuel storage tank is measured using shearography. It is important to measure the strain and deformation in order to detect defects and repair the pressure vessel. To verify the accuracy of the shearography measurement method, the measurement results of shearography, out-of-plane ESPI, and FEM are compared quantitatively.

A Study on the Knowledge of Immigrant Housewives on Infant Weaning (결혼이민자 주부의 이유식에 대한 지식 및 인지도 조사)

  • Min, Kyung-Ae;Kang, Jung-Min;Jeong, Hee-Sun
    • Journal of the Korean Society of Food Culture
    • /
    • v.26 no.1
    • /
    • pp.17-29
    • /
    • 2011
  • As the public is already aware, baby food has a significant effect on a baby's physical and mental health. It is also very important because choice of baby food forms proper eating habits, which will affect health in the future. In particular, recognition of appropriate baby food by the mother or the primary care provider is even more important. Although many studies have been conducted on this matter for domestic housewives, no studies have been conducted on married immigrant housewives whose numbers are increasing every year. A survey was conducted on the recognition and current situation of baby food preparation by mothers living in Gangwon Province with children 6 to 36-months-old. The purpose of the study was to research the level of understanding of baby food by immigrant housewives given that they were raised in different environments with different eating habits and child raising norms. And additional purpose was to provide proper educational material and direction for choosing appropriate baby food. The results showed significant differences depending on the nationality and age of the mother. Moreover, the results showed an insufficient understanding of baby food but a high desire for education, as mothers did not receive enough support from society. Therefore, necessary education should be provided systematically after mothers fully learn to communicate in Korean. These mothers need continuous attention and support, so they can settle in this country as wives, daughters-in-law, and mothers. Moreover, the needed professional education should be provided so that the mothers can learn traditional Korean eating habits and understand differences in the culture and environment between countries. As the selection of baby food forms the basis of future eating habits and the foundation for good health, proper education should be available to establish healthy intercultural families.