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Genetic phenomena for the pb and zu tolerance in plants (식물의 납과 아연의 내성에 관한 유전현상)

  • Yun, Jeoung-Ok;Lee, In-Sook
    • The Korean Journal of Ecology
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    • v.15 no.2
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    • pp.173-180
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    • 1992
  • Pb, Zn tolerance of phaseolus multiflorus was investigated, based on the elongation of root and stem, pollen Germination and progeny quality in various pb, zn concentrations. The result obtained by water culture showed that the growth of roots and steams of phaseolus multiflorus from pb-zn mine site is less inhivited than that of the control site. The flower of phaseolus multiflorus from which pollen was taken were grown without added pb, zn and percent germination of pollen observed in a range of pb, zn concentrations. The percent germination of pollen from pb-zn mine site was higher than the control site. phaseolus multiflorus collected at a pb-zn mine site and the control site was site were grown at different pb, zn concentrations, its progeny was retreated with same concentrations of pb-zn mine site was more vigorous than the control site. thus, pb-zn tolerance was able to expressed in both pollen and sporophytes.

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Development of Probabilistic Site Coefficient (확률론적 지진계수 개발)

  • Kwak, Dong-Yeop;Jeong, Chang-Gyun;Park, Du-Hee
    • Proceedings of the Korean Geotechical Society Conference
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    • 2009.03a
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    • pp.707-714
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    • 2009
  • The design response spectrum generally used in Korea is decided by the site coefficients determined by deterministic methodology, while it is based on probabilistic seismic hazard analysis. The design response spectrum has to be made using probabilistic method which includes uncertainties of ground motions and ground properties for coincide with probabilistic methodology of seismic hazard analysis. In this study probabilistic site coefficients were developed, which were defined by the results of site response analysis using a set of ground motion that was compatible with present seismic hazard map. The design response spectrum defined by probabilistic seismic coefficients resulted in lower spectrum in long period area and larger spectrum in short period area. Also, the maximum spectral accelerations in site class D and site class E were lower than one in site class C while in the previous design response spectrum the maximum spectral acceleration increased from site class A to E.

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Characteristics of Nocturnal Cooling at a Pear Orchard in Frost-Prone Area (서리상습지 배 과수원에서의 야간 냉각 특성)

  • 황규홍;이정택;윤진일;허승오;심교문
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.3 no.4
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    • pp.206-214
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    • 2001
  • Cooling rate shows the highest as about 0.7$^{\circ}C$/hr on spring season and the lowest as about 0.3$^{\circ}C$/hr on september at plain place. The correlation coefficient between net radiation and cooling rate from sunrise to sunset was 0.63$^{**}$, It became higher to 0.90$^{**}$ when the wind speed decreased lower than 0.5 m/sec, and it decreased as the wind speed increased. On a clear and calm day, cooling rates were observed as 1.4$^{\circ}C$/hr on the plain (site 1, 2, 3), 1.2$^{\circ}C$/hr on the slope (site 4, 5) and 0.6$^{\circ}C$/hr on the top of mountain (site 6). In condition of the wind speed is 1.2~2 m/sec on a clear and calm day and the temperature on the top of mountain is lower than that of slope and plain, the temperature on the slope (site 4,5) was increased unlike our expectation.ion.

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Effect of the Exchange of Saline Used in Surgical Procedures on Surgical Site Infection (수술에 사용하는 생리식염수의 교환이 수술부위감염에 미치는 효과)

  • 조옥연;윤혜상
    • Journal of Korean Academy of Nursing
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    • v.34 no.3
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    • pp.467-476
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    • 2004
  • Purpose: The purpose of this study was to identify the effect of the exchange of saline used in surgical procedures on surgical site infections. Method: Patients with stomach cancer were assigned to the experimental group or to the control group by random sampling, respectively. The experimental group received an exchange of saline during the operation right after the excision of the stomach in a gastrectomy but the control group did not. Data were collected from the medical charts of 34 patients from Dec. 1, 2002 through May 31, 2003. Result: The surgical site infection rate of the experimental group was 5.9% while surgical site infection rate of the control group was 17.6%. In total, the surgical site infection rate was 11.8%. The experimental group maintained a normal level of WBC on post operative day 3; however, the control group, showed an increase of WBC on post operative day 3. Conclusion: The exchange of saline used in an operation immediately after the excision of the stomach in a gastrectomy decreases the contamination level of saline used in the operation, and can prevent surgical patients from a surgical site infection.

Measuring the Usability of Shopping Mall Web Sites Using Verbal Protocol Analysis (언어적 프로토콜 분석을 이용한 쇼핑몰 웹사이트 사용성 측정방법에 관한 연구)

  • Cho, Hwi-Hyung;Hong, Il-Yoo
    • The Journal of Information Systems
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    • v.18 no.3
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    • pp.111-134
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    • 2009
  • Today many owners of Web sites are looking to user's satisfaction survey as a key means of measuring the usability of a Web site. While it is preferred for it simplicity and ease of use, this survey method is not without potential risks. This paper focuses on showing that the existing practice of questionnaire-based usability measurement is subject to human recall errors, and that such flaws can be reduced when the questionnaire survey is followed by the users hands-on experience of the site. An empirical study was conducted, and the results indicate that the above speculation holds true. Even if respondents felt highly confident about their responses on a recall survey, a hands-on experience with a focal Web site increased the extent to which the respondents were satisfied with the shopping mall site. This indicates that a user's perception of the quality of a Web site may be distorted or lost as time goes by. In addition, the findings have shown that the use of the verbal protocol analysis method can reveal critical information that can help track the root causes of Web site usability problems, thereby helping to develop site enhancement strategies. The paper concludes with directions for future research.

The Effect of Quality Cognition of the Web Site of the Hospital and Relationship Commitment on Customer Loyalty (병원 웹사이트 품질 인식과 관계몰입이 고객충성도에 미치는 영향)

  • Kim, Hee-Young;Kim, Eun-A;Ha, Yoon-Ju
    • Korea Journal of Hospital Management
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    • v.16 no.3
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    • pp.41-56
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    • 2011
  • The research was to investigate the effect of quality cognition of the web site of the facility and relationship commitment on customer loyalty. The respondents were 190 patients and caregivers. Data were collected from March 1st to 31st, 2010 at C university hospital in G city. The effect of facility web site of quality cognition and relationship commitment on customer loyalty showed 43.9%(F=35.806) in model 1, 58.4%(F=51.113) in model 2, and 58.7%(F=28.185) in model 3. Also, medical information & usage, aesthetics was significance in model 1, medical information & usage, relationship commitment in model 2. In relationship between web site quality cognition and customer loyalty, moderate effect of relationship commitment were not considerable in model 3. As a result, customer loyalty is the leading fact for quality cognition of the web site more than relationship commitment. Therefore, customer loyalty leaves its possibility of increment when facility web site is designated depending on medical information and aesthetics.

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A Study on the Case Study of Internet Menu-Delivery-Web Site (인터넷 식단 배송 사이트의 내용 사례연구)

  • 진양호;원혜영
    • Culinary science and hospitality research
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    • v.10 no.2
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    • pp.59-71
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    • 2004
  • This study .is about marketing of menu-delivery-web site through internet which is getting bigger in working-together-couples. The purpose of this study is suggesting the way which can make internet marketing to activate by means of analysing of a certain enterprise's homepage with marketing mix method. We draw the findings which is seperated by goods, price, promotion, distribution, other service according to marketing constituents. As a result of research, it was found that each company has given much more weight on some part in internet marketing's field of activity. In general, they put an empasis on activity of goods and promotion. On the other hands they didn't consider prices and delivery to be important compared with other parts. In a field of price, menu-site just announced price but in further advance, it had better offer and compare two price level when customer used menu-delivery-web site or not. And that site needed to promote and to be advertised what customer who just think using web site was expensive have benefit in the price. One of the most important things about internet-marketing was that fast and exact feedback and community made each enterprise to be able to help to communicate with customer. For these strategy to execute effectively, first company's name should be known well and goods and service the company had should be well advertised. But first of all, differentiated strategy should precede through consistency of taste and quality, consistant information update as a internet-company and sincere homepage management.

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Limitations of Site-Specificity in Minimal Art: Focusing on Donald Judd's works (미니멀 아트의 장소특정성의 한계 : 도널드 저드의 작품을 중심으로)

  • Park, Mi Ye
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.35 no.2
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    • pp.93-104
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    • 2019
  • Minimal art, which began to flourish in the mid-1960s, explores perceptual situations caused by the involvement of objects in given site contexts. This has led to the mentions of minimal art as a site-specific art, but its limitations have also been pointed out. This study specifically addresses the limitations of minimal art as a site-specific art with two perceptual points of view. First, according to Michael Fried, situations described as 'now here' focus largely on the bodily experiences of a place. However, they do not rooted in specific time and space of a certain place. Second, the unique characteristics of a certain place are excluded from the perception of the body which occupies the passage of time. Self-sufficient algorithm, which is far from site-specific conditions, is the autonomous system creating the period in the way of arrangement of objects. In addition, Minimal art regards a body only as the objectivity excluding the subjectivity which is essential creating meaning in a place. In the latter part of the article, these features are dealt with through Donald Judd's works. This study on site-specificity also provides a new perspective on the discussion of Minimal architecture and Minimal landscape.

THE CONFLICT MANAGEMENT STYLE ADOPTED BY THE SUBCONTRACTORS OF HONG KONG BUILDING PROJECTS

  • Andy K.W. Ng;Andrew A.D.F. Price
    • International conference on construction engineering and project management
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    • 2009.05a
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    • pp.628-634
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    • 2009
  • It is a common practice in Hong Kong for the main contractors of local building projects to sublet most of the work to subcontractors. Consequently their roles have gradually transformed from a constructor to a manager of subcontractors. The outcomes of a project therefore depend heavily on the subcontractors' performance. However, most of the subcontractors complain that they are unable to efficiently and effectively operate due to site coordination problems, such as inaccurate site reference lines, caused by main contractors. The site problems may consume significant amounts of resources if practical solutions cannot be agreed by the project participants early enough. Rahim Organizational Conflict Inventory-II (ROCI-II) model was developed by M.A. Rahim that measure five types of conflict management style including Integrating, Obliging, Dominating, Avoiding and Compromising. This paper presents the questionnaire survey based on the ROCI-II model to rank the preference on the conflict management style adopted by the project representatives of the subcontractors in handling the site coordination problems and its impact to the time used to agree the solutions to the different types of site coordination problems with main contractor. The survey results show that most of the subcontractors' project representatives preferred to adopt the Compromising style to tackle the site coordination problems and the time used to agree the solutions with main contractor was influenced by the conflict management style adopted.

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A Case Study of Site Investigation on OO Gas Station (국내토양오염 유발시설별 오염현황 조사 I -OO인근주유소 오염현황조사-)

  • 김무훈
    • Journal of Korea Soil Environment Society
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    • v.2 no.3
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    • pp.81-88
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    • 1997
  • The purpose of this study is to assess contaminant transfer and environmental impacts to the surroundings by inadequate control of USTs. Several methodologies can be used in sampling procedure for the site assessment depending on the appearance of contaminants on the site and their types. In this case study because of site contaminants, randomized and/or triangle matrix techniques were used. As a result, the composition of materials in OO gas station were appeared in several status. From 1 to 2.5m depth, the soil was composed of silty sand and gravel, around 4m depth, weathered rock was appeared. Based on the preliminary and actual site investigation by DPT methodologies on the width and depth of the site with analysis of BTEX and TPH, no contamination was found in OO gas station, however, in one point because of careless dumping after refill by oil company, about 1731. 5 ppm of TPH appeared.

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