• Nutrition Research and Practice
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• 제4권4호
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• pp.303-310
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• 2010

Consumption of vegetables and fruits is associated with a reduced risk of stroke, but it is unclear whether their protective effects are due to antioxidant vitamins or folate and metabolically related B vitamins. The purpose of the study was to test the hypothesis that intake of fruits and vegetables, which are major sources of antioxidant and vitamin B complex vitamins, reduces the risk of stroke. Cases consisted of patients diagnosed with first event of stroke (n = 69). Controls (n = 69) were age-, sex-, and body mass index-matched to cases. Multivariable-adjusted regression analysis showed that subjects who ate four to six servings of vegetable per day had a 32% reduction in the risk of stroke, and those with more than six servings per day had a reduction of 69% after adjusting for age, sex, BMI, and family history of stroke. Intakes of total fat, plant fat, calcium, potassium, vitamin $B_1$, vitamin $B_2$, vitamin $B_6$, niacin, and folate were significantly and negatively associated with the risk of stroke. Although the trend was not significant, stroke risk was reduced in the second quartile (1.21-2.66 servings per week) of fish intake. However, intake of fruits (average daily intake of 1.0 serving) and antioxidant vitamins such as carotene, vitamin C, and vitamin E was not associated with the risk of stroke. In conclusion, our observational study suggests that intake of fat and vegetables, rich sources of vitamin B complex, calcium, and potassium may protect against stroke.

• 한국정보시스템학회지:정보시스템연구
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• 제13권2호
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• pp.65-88
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• 2004

This study is intended to identify success factors which influence the performance of the B2B e-marketplaces.Thestudyisfocused on the supply companies and conducted to provide local small businesses with guidelines to improve their competitiveness and to develop appropriate business strategies in the digital economy age. Based on the literature review, four characteristics which influence the performance of B2B e-marketplaces are identified. Such characteristics as strategic, operational, organizational, and product/service properties are then utilized to develop the survey questionaire. The data collection is first performed through e-mail and, after finding out the response rate was too poor to analyze the results, followed by visits to the companies which participate in e-marketplaces. SAS 8.1 is used for the data analysis. Demographic analysis is conducted to generate the general information of the companies responded, and factor analysis is performed for the validity test. Finally, multiple regression is used for the hypothesis testing. This study is expected to contribute to find out critical factors for the success of B2B e-marketplaces and suggest guidelines for local small businesses to develop an appropriate e-business strategy to improve their competitive position.

• 한국동물위생학회지
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• 제33권1호
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• pp.29-35
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• 2010

This study was performed to test the hypothesis that Brucella abortus strain RB51 (SRB51) might protect Korean indigenous mongrel dog against challenge with either virulent B. abortus biotype 1 or B. canis. A total of 12 Korean mongrel dogs were divided into four groups (Group A, B, C and D). Dogs belonging to Group A and C were inoculated subcutaneously with $1{\times}10^9$ CFU of SRB51 in 1ml of sterile phosphate buffered saline (PBS). Dogs of Group B and D were inoculated subcutaneously with 1ml of sterile PBS as control. At 12 weeks post vaccination, dogs of Group A and B were challenged by oral inoculation of virulent strain of B. canis ($5.0{\times}10^9$ CFU) and dogs of Group C and D were challenged by oral inoculation of virulent strain of B. abortus biotype 1 ($4.4{\times}10^{10}$ CFU). The serum antibodies titers in all dogs were monitored at regular interval for eight weeks after challenge (AC) by standard tube agglutination test, plate agglutination test, rose bengal test, 2-mercaptoethanol rapid slide agglutination test and 2-mercaptoethanol tube agglutination test. No antibody titers in Group A and C was detected. Also, the challenge strains were not found from blood of all dogs of Group A and C from 1 week AC till the end of the experiment by culture and modified AMOS-PCR, whereas B. canis and B. abortus challenge strains were detected from blood of Group B and D, respectively. In addition, neither of two challenge bacteria was recovered from liver, spleen, kidneys, lymph nodes and reproductive tracts of Group A and C dogs after postmortem. However, B. canis and B. abortus challenge strains were isolated from these tissues of Group B and D, respectively. These data suggest that SRB51 could be a promising vaccine candidate for immunizing dogs to control canine brucellosis caused by B. canis or B. abortus.

• 천문학회보
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• 제37권2호
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• pp.87.1-87.1
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• 2012

The fraction of blue galaxies in clusters is found to dramatically increase with redshift. This trend has been known as the Butcher-Oemler (B-O) effect which implies a significant evolution among the cluster galaxy population with time. It has been proposed that the blue galaxies in B-O clusters are at their last stage of star formation, probably using up the gas, which then might have evolved into red and passive cluster galaxies as found in the Local Universe. To test this hypothesis and ultimately to understand the evolution of cluster galaxy population as a function of redshift, we have embarked a multi-wavelength study of two carefully selected galaxy clusters at z~0.2 where the B-O effect becomes first noticeable. In this talk, I will introduce the Blind Ultra-deep Distant HI Environmental Survey (BUDHIES) on those two clusters and relevant multi-wavelength observations. Also, I will present the preliminary results of our recent Nobeyama CO observations of two galaxies selected among the BUHDIES sample.

• 한국정보시스템학회지:정보시스템연구
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• 제13권2호
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• pp.173-193
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• 2004

B2C EC has two kinds of perspectives such as technology-oriented and trust-oriented perspectives. As lots of fraud damages on the B2C EC have been reported every day, the trust-oriented perspective receives lots of attention. In this study, an integrative typology for developing and validating trust measures for B2C EC proposed by McKnight et al.(2002a) and McKnight and Chevany(2002b) has been used for trust-oriented perspective, and the TAM(technology acceptance model) model proposed by Fred Davis in 1985 has been used for technology-oriented perspective. An research model had been developed by using the 4 factors of an integrative typology and 5 factors of the TAM model such as perceived usefulness, perceived ease of use, trust beliefs, intention, and actual transaction. All 13 hypotheses had been proposed from this research model and tested by field study. 12 hypotheses, including the 4 f actors of an integrative typology as antecedents on trust beliefs, were significant, whereas the hypothesis 5 on the relationship between structural assurance and perceived ease of use was insignificant. Structures on B2C EC like guarantees, regulations, promises, legal recourse, or other procedures seemed to be difficult to B2C EC customers. Therefore, these structures should be developed more easier to B2C EC customers.

• 한국산학기술학회논문지
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• 제19권8호
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• pp.78-85
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• 2018

본 연구에서는 2017년 20건의 화재가 발생한 냉동창고 화재사례중 발화원인의 판정에 다수의 의견이 존재하였던 사례에 대해 연구하였다. 연구 방법론은 NFPA 921 CODE에서 규정하고 있는 과학적 화재조사 방법이다. 과학적 화재조사 방법은 가설설정을 통한 논리적 추론에 의한 화재조사 방법으로 발화원인 판단에 오류를 최소화 시킨다. 반면에 비과학적 화재조사 방법은 발화원인의 판단에 주관적 추측, 추론적 판단 등의 비합리적 요소의 개입으로 많은 오류를 발생시킨다. 이는 결국 인적, 물적 책임의 문제 및 학문적 퇴보를 가져온다. 특히 목격된 화재(Sighted fire)에 비해 목격되지 않는 화재(Fire not seen)의 경우 원인조사에 있어서 더 많은 발화원인 의 오류를 만든다. 본 연구에서는 2017년 **시 **마트에서 발생한 냉동창고 정온전선의 화재사례에 대해 화재조사 보고서의 검토, 현장조사를 바탕으로한 가설A 와 가설B의 설정하였다. 설정된 가설은 NFPA 921 code 규정하고 있는 연역적 검정 방법중 실험으로 검정하였다. 이러한 분석방법은 향후 목격되지 않는 화재(Fire not seen) 및 원인 불명 화재의 발화원인 판단에 NEW Paradigm의 구축 할 것이다. 또한 본 연구의 실험 자료는 냉동창고 제조사 및 운영사에 통보, 화재 예방을 위한 기초 자료로 활용 될 것이다.

• Asia Marketing Journal
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• 제13권1호
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• pp.51-84
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• 2011

이 연구는 기업가정신이 유발하는 시장지향성이 성과를 유도한다는 기존연구를 확장하여 시장지향성을 매개변수로 하고 성과와 신뢰 요인을 도입하여, 수급사업자의 기업가정신이 원사업자와의 관계를 견인하고 협업적 네트워크를 구축하는데 필요한 수급사업자의 관계몰입을 유도하는 경로를 탐색하고 실증 분석하였다. 시장지향성이 구조적 결합요인인 거래특유자산의 투자를 촉진할 수 있고, 또 사회적 결합요인인 커뮤니케이션에 긍정적 영향을 미칠 수 있음을 식별하고, 기업가정신-시장지향성-커뮤니케이션-신뢰-관계몰입의 경로, 기업가정신-시장지향성-성과-관계몰입의 경로, 기업가정신-시장지향성-거래특유자산투자-신뢰-관계몰입의 경로를 식별하였다. 그런데 기업가정신이 원사업자의 거래특유자산투자에 대한 효과가 없는 것으로 분석되었다. 즉 수급사업자의 기업가정신은 시장지향성을 통해 관계몰입에 영향을 미치는 것으로 탐색되었다. 따라서 원사업자는 수급사업자에게 거래특유자산을 투자하고 커뮤니케이션을 통하여 신뢰를 확보해야 한다. 그리고 수급사업자는 투철한 기업가정신으로 시장지향성을 실현하고 원사업자의 거래특유자산투자와 커뮤니케이션을 유도하고, 또 이익을 실현해야 한다. 이러한 수급사업자의 이익성과와 신뢰, 그리고 원사업자의 거래특유자산투자가 B2B시장에서 원사업자에 대한 수급사업자의 관계몰입을 유도하고 유기적인 기업계열화를 촉진하는 요인이기 때문에 정부도 원사업자의 거래특유자산투자를 유도하여 원사업자와 수급사업자의 신뢰를 촉진하는 정책이 필요하다.

• 한국조경학회지
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• 제21권2호
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• pp.120-128
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• 1993

This study suggests one hypothesis: The strength of the catchment forces of urban community parks can be represented as an equilibrium point model, which is derived from a centrality index for. That model was designed by Reilly(1931) and developed by Godlund(1956). An equilibrium point model for the catchments is represented as followed formulae: m=$\frac{CA2}{CA-CB}$ m=$\frac {{{{{L SQRT {{C}_{A}$.$ {C}_{B}} {CA-CB} Here, m is distance from the center of park A to the cetner of park B. r is radius of a circle where the catchment between park A and B is equal pointed traces. CA is index of the centrality of park A from Reilly's Law. CB is an index of the centrality of park B from Reilly's Law. L is an the distance between park A and B. The equilibrium point model is testified in the case of Chong-ju community parks. The testification has been limited to the application to such manifest outdoor recreational facilities as bentches, even though there are statistically and economically problems for a quantitative model to be testified. But the testification could be a rationale for the catchment forces of urban community parks, which was quantitatively represented that the distance between two or there parks should be related with the feasibility of the parks. Therefore, the urban community park should be planned to be located, hiving separately its identity that might be considered with the facility diversification and the locational competitiveness of a park.

• 간호행정학회지
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• 제10권3호
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• pp.291-298
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• 2004

Purpose: This study is to investigate if the effectiveness training program, suggested by Gordon(1970), could help these nursing students with the problems of interpersonal relationship and self-identification. Method: This study was designed using nonequivalent control group protest-posttest design. The subject for this study were thirty nursing students. Fifteen nursing students of the experimental group experienced the Effectiveness Training for 8 weeks (3 hours/week). The effect of Effectiveness Training was measured using Relationship Change Scale devised by Lee, H.D. & Moon, S.M.(1979) and Ego Identity Scale devised by Dignan(1965) which was translated by Seo, B.Y.(1975) Pretest data were collected by the researcher from both experimental and control group before training. After the end of eight weeks training, posttest data collected from both experimental and control group. Samples were analyzed using SPSS PC+. Result: 1. The first hypothesis, "level of interpersonal relationship of the experiment group after 8 weeks will be significantly higher than that of the control group"(z=-1.965, p=.049)was supported. 2. The second hypothesis, "level of ego-identity of the experimental group after 8 weeks will be significantly higher than that of the control group"(z=-2.191, p=.028)was supported. 3. The third hypothesis, "level of interpersonal relationship of the experiment group will be significantly higher than that of the control group after 4 months of training"(z=-.634, p=.238)was not supported. 4. The fourth hypothesis, "level of ego-identity of the experimental group will be significantly higher than that of the control group after 4 months of training"(z=-.292, p=.642)was not supported. Conclusion: The Effectiveness Training can be considered as an effective method of nursing students's interpersonal relationship & ego-identity, because it was proved to help nursing students increase level of their interpersonal relationship & ego-identity but it was needed to reinforce for continuing of the effect of the interpersonal relationship & ego-identity.

• 아시안잔디학회지
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• 제10권1호
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• pp.41-47
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• 1996

The theory of slope erosion is developed along similar lines to the theory of heat flow in solid added to the correcting factor. if slope erosion in the forest and grassland proceeds according to the hypothesis, it is $\delta$y $\delta^2$y = k $\delta^2$y $\delta$$X^2$+f(s b. t) where 5 is internal properties of slope soil and b is biota on slope. When the variables of the equation of slope erosion are x = -λ the initial elevation=-f(λ), x=λ, x==a, the steady value of the initial elevation=y, and dy dx x=0> =O(t>o), respectively, the houndary condition due to the solution of the equation of slope erosion is y= 2 √$\pi$kt [∫a o λe $(X-λ)^2$4kt dλ- ∫ao- $(x+λ)^2$4kt dλ] + ∫∫∫ f (s.b. t)dtdbds