• 한국경영과학회지
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• 제31권4호
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• pp.105-123
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• 2006

Previous research on two-sided markets has, for the most part, concentrated on indirect network externalities between buyers alto sellers. This paper considers direct competition effect among sellers and among buyers as well as indirect network externalities. We develop an analytic model of C2C e-marketplaces and examine whether a monopolistic incumbent could successfully deter new entry into its market. We find that the effect of the number of sellers or buyers on the price of goods depends on whether sellers have decided to sell the goods using an auction or fixed pricing rule and on the characteristics of the goods. We argue that when the effect of the number of sellers on the price of goods is significantly larger than that of buyers, there is a high possibility of entry. In particular, we show that entry becomes more difficult to deter as fixed-price format is adopted more frequently or the proportion of collectables is relatively low.

• 기술혁신학회지
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• 제6권3호
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• pp.328-344
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• 2003

This paper is aimed at analyzing the effect of Information Technology (IT) investment on the output growth and Total Factor Productivity (TFP) of Korean stock industry. Data on 24 stock firms for the eleven years (1991-2001) are used for the analysis. It is identified that there are both direct and indirect impacts of IT investment of the Korean stock industry on output growth. The total effect on output growth is 1.34 percentage point per year, which divided into a direct effect of investment in IT on the output growth is 1.97 and an indirect effect on the TFP is -0.63 percentage points per year. Results show that IT investment cannot contribute to increased stock industry productivity. Therefore, the Korean stock industry has not benefited from increased investment on IT in increasing productivity, implying the so-called productivity paradox has existed during the period.

• 경영과정보연구
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• 제23권
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• pp.99-134
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• 2007

In recent years there has been much emphasis on the need for service firms to develop an organizational culture which facilitates the successful implementation of marketing activities. This study examines the relationship among marketing culture, service quality, customer satisfaction, and customer loyalty in fast food service firms. The results of empirical analysis can be summarized by the following: First, marketing culture(employee service quality, interpersonal relationships, selling task, organization, internal communications, innovativeness) had a significant direct effect on service quality. Second, marketing culture(employee service quality, selling task, internal communications) had a significant direct effect on customer satisfaction. It had also a positive, significant indirect effect on customer satisfaction through service quality. Third, service quality had a significant indirect effect on customer loyalty through customer satisfaction. Therefore, the results of the study provide the practical implication for establishment of service firms' marketing strategies, related to marketing culture.

• 한국조리학회지
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• 제14권3호
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• pp.31-44
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• 2008

The purpose of this research was to examine the construct known as job fit perceived by service employees in the foodservice industry. The model was tested using SPSS 12.0 and AMOS 4.0 based on the sample of 667 persons that showed a 95% usable response rate. The results of the empirical analysis showed as follows. First, in restaurants, the employees' job suitability factor brings about an indirect effect by organizational commitment and turnover intention. Second, employees' job satisfaction factor causes an indirect effect by organizational commitment. Third, employees' organizational commitment factor has relationships with turnover intention. That is, the higher organizational commitment, the lower turnover intention. By the same route analysis, job suitability has an effect on organizational commitment. Also, the research proved organizational immersion has an effect on turnover intention. In this respect, the research contributes to job performance of foodservice employees, emphasizing the necessity of educational programs for them.

• Asia Marketing Journal
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• 제19권2호
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• pp.1-24
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• 2017

This article empirically examines the relationship between values, consumer innovativeness, online opinion leadership, and new product adoption behavior utilizing wearable technology as the overall unit of analysis. The authors analyze data collected from SNS users who possess one or more wearable devices using a structural equation modeling approach to examine the direct effects. Moreover, a bootstrapping approach is adopted to explore the indirect effects between the constructs. The results indicate that consumers who value stimulation and hedonism are more inclined to possess stronger consumer innovativeness. Consumer innovativeness also positively influences online opinion leadership, ultimately leading to the faster adoption of new products. The mediating effect of consumer innovativeness between the value stimulation and online opinion leadership is also confirmed. In addition, although consumer innovativeness has no direct effect on new product adoption behavior, it does have an indirect, mediating effect through online opinion leadership.

• 문화기술의 융합
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• 제10권3호
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• pp.259-265
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• 2024

본 논문은 기업이 갖는 인적자원개발(HRD)에 대한 의지, 인적자원개발(HRD) 시행수준이 기업의 내외적 경쟁력에 미치는 효과와 각 변수 간의 관계에 대한 조직몰입의 매개효과에 대하여 분석하였다. 연구모형은 기업의 인적자원개발 의지와 인적자원개발 실행수준이 기업의 내외적 경쟁력에 직접적으로 긍정적인 영향을 미칠 것으로 가정하였다. 그리고 인적자원개발 의지와 인적자원개발 시행수준이 조직몰입을 통해 기업경쟁력에 미치는 간접효과가 있을것으로 설정하였다. 분석에 필요한 자료는 한국직업능력개발원(KRIVET)이 시행한 인적자본기업패널 Ⅱ(HCCP Ⅱ) 조사(2차)에서 수집된 9,516명 종업원의 자료를 기업수준(500개 기업)으로 통합하여 활용하였다. 본 연구모형을 분석하는데에는 구조방정식 분석을 사용하였다. 분석결과에 따르면, 기업의 인적자원개발 의지와 인적자원개발 시행수준이 높을수록 기업의 내v외적 경쟁력이 높아지는 효과가 있는 것을 확인하였다. 또한 부트스트래핑을 이용한 간접효과 분석에서는 인적자원개발 의지와 인적자원개발 시행수준이 모두 조직몰입을 통 간접효과가 유의한 것으로 나타났다.

• 한방재활의학과학회지
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• 제20권1호
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• pp.141-152
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• 2010

Objectives : The purpose of this study is to compare with the effect of acupuncture treatment with or without indirect moxibustion treatment for acute ankle sprain. Methods : This study was carried out on the 48 patients who had been treated for acute ankle sprain from June 1st to November 30th 2009 in the Dept. of Oriental Rehabilitation, Pohang Oriental Medical Hospital, Daegu Hanny University. The patients were divided into 3 groups ; Group A took near acupuncture point_needling, Group B took remote acupuncture point needling, Group C took remote acupuncture point needling with indirect moxibustion. 3 Groups had been co-treated with rest, ice, compression and elevation(RICE) therapy, physical treatment and administered Ojeok-san(Wuji-san) extract granule. To evaluating the efficiency of each treatment, Ankle-Hindfoot Scale(AHS) and Visual Analogue Scale(VAS) were applied before treatment and after 3rd treatment. Results : In results, the AHS scores were increased and the VAS scores were decreased after 3rd treatment in all group. Also, AHS scores and the VAS scores of intergroup were showed no significant change. Conclusions : In this study, there is no significant effect between only acupuncture treatment and moxibustion co-treatment for acute ankle sprain.

• 대한토목학회논문집
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• 제31권1A호
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• pp.35-41
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• 2011

콘크리트구조설계기준에서는 일반적으로 처짐을 제어하기 위해 직접처짐제어법과 간접처짐제어법을 제시하고 있다. 이 때 처짐/깊이-비는 허용 처짐량을 초과하지 않도록 제한된다는 점에서 간접처짐제어법이 더 효과적이다. 실제 처짐량은 많은 요소에 의해 영향을 받기 때문에 실제 처짐량을 정확하게 산정하는 것은 어렵다. 이 연구에서는 철근콘크리트 부재의 사용한 계상태에서 처짐량을 직접 계산함으로써 한계 지간/깊이-비를 산정하였다. 이 때 처짐은 재료 모델로부터 산정된 휨곡률을 통해 산정하였다. 해석의 주요 변수는 인장증강효과 모델, 콘크리트 강도, 단면 크기 및 압축 철근의 유무이다. 해석 결과 2차식 형태의 인장증강효과 모델을 사용함으로써 해석의 일관성을 도모할 수 있는 것으로 나타났다. 또한 한계 지간/깊이-비는 단면 크기와 관계없이 재료 강도와 인장 및 압축 철근비에 따라 변화하는 것으로 나타났다.

• Journal of Biosystems Engineering
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• 제30권1호
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• pp.45-55
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• 2005

Knowledge of the relationship between crop yield and yield-limiting factors is essential for precision farming. However, developing this knowledge is not easy because these yield-limiting factors are interrelated and affect crop yield in different ways. In this study, data for grain yield and yield-limiting factors, including crop chlorophyll content, soil chemical properties, and topography were collected for a small (0.3 ha) rice paddy field in Korea and a large (36 ha) upland corn field in the USA, and relationships were investigated with path analysis. Using this approach, the effects of limiting factors on crop yield could be separated into direct effects and indirect effects acting through other factors. Path analysis provided more insight into these complex relationships than did simple correlation or multiple linear regression analysis. Results of correlation analysis for the rice paddy field showed that EC, Ca, and $SiO_2$ had significant (P<0.1) correlations with rice yield, while pH, Ca, Mg, Na, $SiO_2,\;and\;P_2O_5$ had significant correlations with the SPAD chlorophyll reading. Path analysis provided additional information about the importance and contribution paths of soil variables to rice yield and growth. Ca had the highest direct effect (0.52) and indirect effect via Mg (-0.37) on rice yield. The indirect effect of Mg through Ca (0.51) was higher than the direct effect (-0.38). Path analysis also enabled more appropriate selection of important factors limiting crop yield by considering cause-and-effect relationships among predictor and response variables. For example, although pH showed a positive correlation (r=0.35) with SPAD readings, the correlation was mainly due to the indirect positive effects acting through Mg and $SiO_2$, while pH not only showed negative direct effects, but also negatively impacted indirect effects of other variables on SPAD readings. For the large upland Missouri corn field, two topographic factors, elevation and slope, had significant (P<0.1) direct effects on yield and highly significant (P<0.01) correlations with other limiting factors. Based on the correlation analysis alone, P and K were determined to be nutrients that would increase corn yield for this field. With the help of path analysis, however, increases in Mg could also be expected to increase corn yield in this case. In general, path analysis results were consistent with published optimum ranges of nutrients for rice and com production. We conclude that path analysis can be a useful tool to investigate interrelationships between crop yield and yield limiting factors on a site-specific basis.

• 한국콘텐츠학회논문지
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• 제21권11호
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• pp.609-625
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• 2021

수천 명의 목숨을 앗아가고 일상생활에서 많은 면을 변화시킨 코로나19의 대유행이 한국에서 시작된 지 1년이 지났다. 코로나 대유행은 신체적 건강에만 영향을 끼친 것이 아니라 심리적인 부분에도 영향을 주며, '코로나 블루'라고 불리는 집단적 사회 스트레스 현상을 일으켰다. 본 연구의 목적은 코로나 대유행을 재난의 관점에서 바라보며, 공감이 재난에 관련된 심리적 변수인 위험지각과 간접외상을 통해 불안과 우울에 어떤 영향을 미치는지 살펴보는 것이다. 본 연구는 일반 대중 214명의 설문 데이터를 구조방정식모델링으로 분석하였다. 분석 결과, 대상자의 53.3%가 불안을, 35.7%가 우울증을 경험했으며 이는 2019년 정부에서 발표한 수치보다 약 6배 높게 나타났다. 구조방정식모델에서 정서적 공감은 위험지각에 유의한 영향을 미쳤고, 인지적 공감은 간접적 외상에 유의한 영향을 미쳤다. 위험지각과 간접외상은 모두 불안에 유의한 영향을 미쳤고 불안은 우울증에 유의한 영향을 미쳤다. 그리고 인지적 공감만이 불안과 우울에 유의한 간접적인 영향을 미쳤다. 본 연구는 코로나 대유행이라는 사회적 재난 상황에서 나타난 집합적 우울 현상을 개인의 인지적·정서적 공감 수준 관점에서 이해하려한 새로운 시도라는 점에서 학문적 의의를 가진다.