• 벤처혁신연구
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• 제6권1호
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• pp.1-16
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• 2023

4차산업혁명의 진전과 코로나19 팬데믹으로 인하여 구독경제가 급격히 확산 되고 있다. 특히 제품의 서비스화가 진전되면서 구독경제는 더욱 확대될 것으로 보인다. 본 연구에서는 이러한 구독경제의 확산을 위해 소비자 관점에서 이를 촉진하는 요인과 방해하는 요인에 대해 실증적으로 분석하고자 했다. 이를 위해 품질에서 만족, 충성도, 성과로 이어지는 매커니즘을 밝힌 SPC(Service Profit Chain) 모델을 토대로 혜택 요인과 희생 요인을 함께 다루고 있는 VAM(Value-based Adoption Model)의 framework을 결합하여 연구 모형을 도출하였다. 혜택 요인으로 유용성과 편의성을, 희생 요인으로 인지된 위험과 인지된 비용을 도출하였다. 이러한 요인들이 이용 만족도와 지속 이용 의도에 미치는 영향을 분석하였다. 실증 분석을 위해 구독경제 이용 경험이 있는 사람들을 대상으로 설문조사를 실시하였으며, 유효한 300부를 분석하였다. 분석은 AMOS 24를 활용하여 구조방정식으로 하였다. 실증 분석 결과 편의성은 이용 만족도에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 인지된 위험과 인지된 비용은 이용 만족도에 부(-)의 영향을 미치는 것으로 분석되었다. 반면, 유용성은 이용 만족도에 유의한 영향을 미치지 않는 것으로 나타났다. 이용 만족도에 영향을 미치는 영향력의 크기는 인지된 비용, 편의성, 인지된 위험 순이었다. 이용 만족도는 지속 이용 의도에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 이러한 연구 결과는 학술적인 차원에서 기존의 검정된 모형을 결합하여 그 유효성을 검정하므로서 연구의 지평을 넓혔고, 실무적 차원에서는 인지된 비용이 여전히 중요한 요인임을 검정하였다는 점에서 의의가 있는 것으로 사료 된다.

• Journal of Korean Neurosurgical Society
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• 제53권6호
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• pp.323-330
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• 2013

Objective : To develop a simple, reproducible model of disc degeneration in rabbits through percutaneous annular puncture and to confirm the degree of degeneration over time. Methods : Fifteen New Zealand white rabbits (4 to 5 months old and weighing approximately 3 to 3.5 kg each) underwent annular puncture of the L2-L3, L3-L4, and L4-L5 discs. Rabbits were sacrificed at 4, 8, or 20 weeks after puncture. For a longitudinal study to assess changes in disc height over time, serial X-rays were performed at 0, 2, 4, 8, and 20 weeks for rabbits in the 20-week group. Upon sacrifice, the whole spinal column and discs were extracted and analyzed with magnetic resonance imaging (MRI), real time reverse transcriptase-polymerase chain reaction, and histological staining. Results : The X-rays showed a slow, progressive decrease in disc height over time. Significant disc space narrowing compared to preoperative disc height was observed during the time period (p<0.001). The MRI grade, aggrecan, and matrix metalloprotease-13 mRNA expression and hematoxylin and eosin/safranin O/anti-collagen II staining were consistently indicative of degeneration, supporting the results of the X-ray data. Conclusion : Percutaneous annular puncture resulted in slow, reproducible disc degeneration that was confirmed by radiology, biochemistry, and histology. This in vivo model can be used to study and evaluate the safety and efficacy of biologic treatments for degenerative disc disease.

• 복식문화연구
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• 제29권1호
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• pp.1-15
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• 2021

The Internet of Things (IoT) has gained enormous popularity in various fields of industry. An IoT shopping environment is considered an effective tool for convenient use by consumers. Perceived values (including convenience and privacy risks) of IoT shopping can be the main factors that influence consumers' shopping intentions. The current study proposed a research model based on a value-based adoption model, which integrated perceived benefit and sacrifice, shopping attitude, and shopping intention in an IoT shopping environment. As potential customers, participants in their 20s and 30s were recruited through a marketing research firm. Responses collected via an online questionnaire validated the proposed research model and hypothesis. The results confirmed significant, positive relationships between perceived benefit, including both remote control and access convenience, and consumers' positive attitudes toward IoT shopping. The association between perceived privacy risk and consumers' shopping attitudes was not significant. The indirect effects of two benefits of IoT shopping on shopping intention were also significant and positive. From a practical perspective, this study can help marketers and service providers manage their IoT shopping platforms or applications more effectively to attract consumers. The implications and limitations of this study are discussed. Directions for future research and development of IoT shopping environment are suggested.

• 시큐리티연구
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• 제41호
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• pp.123-151
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• 2014

이 연구에서는 민간경비원을 대상으로 직무착근도가 이중몰입에 어떠한 영향을 미치는지 실증적 분석을 통해 그 결과를 살펴보았다. 먼저 독립변인으로 직무착근도를 선정하였고, 직무착근도는 적합성, 연계, 희생의 세 가지 하위요소로 구분하였다. 그리고 종속변인으로 이중몰입(조직몰입, 경력몰입)을 선정하였고, 통제변인으로 성별, 연령, 학력, 근무기간, 소득을 선정하였다. 다중회귀분석결과 직무착근도의 세 가지 구성요소인 적합성, 연계, 희생은 조직몰입과 경력몰입에 각각 유의미한 영향을 미치는 것으로 나타났다. 즉 자신의 조직 및 직무에 대해 잘 맞는다고 지각하고, 조직 내 구성원들과 연결되어 있는 정도가 높으며, 조직을 떠날 경우 잃게 되는 심리적 또는 물질적 편익에 대한 지각비용이 클수록 이중몰입이 높음을 알 수 있다. 하지만 통계적으로 유의미한 것으로 나타난 변인들을 모두 포함시켜 각 변인들을 서로 통제하도록 하였을 때, 조직몰입 모형에서는 연계의 효과는 사라졌고 적합성과 희생이 통계적으로 유의미한 효과를 나타내었다. 그리고 경력몰입 모형에서는 적합성과 연계의 효과는 사라졌고, 희생이 통계적으로 유의미한 효과를 나타내었다. 따라서 직무착근도의 구성요소 중 적합성과 희생이 가장 중요한 요소임을 알 수 있다. 이상의 결과에서 살펴보았듯이 직무착근도(적합성, 연계, 희생)는 민간경비원들의 이중몰입(조직몰입, 경력몰입)에 긍정적인 영향을 미치므로 조직차원에서 직무착근도를 증진시키기 위한 방안을 마련할 필요성이 있는데, 이를 위해 적합성과 관련하여서는 신규채용단계에서 조직에 적합한 구성원을 선발하고 채용 이후에는 질 높은 교육훈련이 이루어져야 할 것이며, 연계와 관련하여서는 조직 내 친목회, 정례회, 모임 등과 같은 제도를 활성화할 필요성 있으며, 희생과 관련하여서는 근무여건, 인센티브, 복지혜택 수준을 점진적으로 증진시킬 필요성이 있다.

• 한국컴퓨터정보학회논문지
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• 제18권7호
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• pp.175-182
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• 2013

이 연구에서는 사회복지관 종사자들의 공공봉사동기가 조직성과에 미치는 영향을 검증해 봄으로써 이론적 정책적 시사점을 도출하는데 연구목적을 두었다. 이러한 연구목적을 실현하기 위하여 문헌연구를 바탕으로 사회복지관 종사자들의 공공봉사동기와 조직성과의 관계에 대한 연구모형을 정립하고 설문조사를 통하여 연구가설을 검증하였다. 분석결과, 사회복지관 종사자들의 공공봉사동기와 조직성과 수준은 전체적으로 비교적 높은 수준이었으며, 공공봉사동기의 요소인 정책입안에 대한 호감도, 공익몰입, 동정심, 자기희생의 요소는 모두 조직성과에 유의미한 영향을 미치는 것으로 나타났다. 이러한 분석결과를 바탕으로 이 연구의 목적인 이론적 정책적 시사점을 도출하였다.

• 한방비만학회지
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• 제17권1호
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• pp.20-28
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• 2017

Objectives: The purpose of this study was to investigate anti-obesity effect of Scutellariae Radix extract combined with metformin. Methods: Male C57BL/6 mice, 4 weeks of age, were used to set high-fat diet induced obesity model. They were grouped NOR (normal control), HFD (high fat diet control), MET (metformin, 100 mg/kg/day), MH2 (metformin 50 mg/kg/day+Scutellariae Radix 200 mg/kg/day), and HG4 (Scutellariae Radix 400 mg/kg/day). MET, MH2, and HG4 were orally administered for 10 weeks. Body weight was measured every week. Fasting blood glucose, triglyceride, total cholesterol (TC), high density lipoprotein, glutamic oxaloacetic transaminase (GOT), and glutamic-pyruvic transaminase (GPT) were measured before sacrifice. Oral glucose tolerance test (OGTT) was also performed. Organ weight and internal fat weight were measured after sacrifice. Results: MH2 group showed a reduction of body weight when compared with HFD group. MH2 group showed stable blood level control which was calculated areas under the curves by OGTT. TC, GOT, GPT level, internal fat, and organ weight in MH2 group reduced. Conclusions: The combined treatment of Scutellariae Radix and Metformin has impact on treating obesity. Further studies are needed to evaluate the effect of Metformin and herbal medicine combination therapy.

• 한국의류학회지
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• 제26권6호
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• pp.877-888
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• 2002

Price is a product attribute, which is determined by the function of the producing cost and profit. It is also identified as one of the most important components of the marketing mix. For consumers, price is an always-existing cue, definite evaluation criteria, and easily accessible information in the purchasing process. Considering the concept of the clothing-price in a comprehensive perspective encompassing economic, psychological and marketing perspectives, a theoretical model was developed. The model includes souses and dimensions of price perception and related behaviors. Souses of price perception were: the actual retail price at selling point, the internal reference price and external reference price. The dimensions of price perception included sacrifice perception, economic value perception, inference, savings perception and price as information perception. Clothing price related behaviors that flowed these dimensions were: low price consciousness, value for money consciousness, price-quality inference, price-prestige inference, sale proneness and price mavenism. An empirical study was conducted to validate the theoretical model. A questionnaire was developed and data were collected from 680 adult women living in Seoul, Korea. Confirmatory factor analysis as well as exploratory factor analysis results showed that theorized price related behaviors were successful classifications.

• 한국정보시스템학회지:정보시스템연구
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• 제13권1호
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• pp.97-119
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• 2004

Recently, many e-business companies started to charge fees to the use of information contents service. However, little is known about how users evaluate and determine to purchase information services. Past technology adoption research has focused primarily on the positive utility gains side, focusing on usefulness and ease of use. Purchase of e-service, however, involves not only the position utilities but also negative utilities. This research uses the service value model(SVM) and explains user's intention of purchasing a new information service. Based on the Perceived Value Framework, this research investigates the impacts of the service quality and the fee charge on the user's perceived service value and further on user's intention of adopting the e-service. One of the most important postulations of this research is that both service quality and the fee charge influence user's intention through affecting the user's perceived service value. This research presences a conceptual model of users' e-service evaluation process. The conceptual framework provides a basis for understanding how perceptions of quality and sacrifice influence value perceptions and purchase intentions. The results of an empirical research suggest that the both service quality and fee charge have influences on the perceived service value. However, they do not directly affect user's intention to purchase the e-service. They affect user's intention to purchase through affecting the perceived service value. In conclusion, this research provides a base to build on for other research studying use intention model of new e-service.

• 대한산업공학회지
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• 제23권1호
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• pp.177-196
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• 1997

In this paper, statistically optimal accelerated life test(ALT) plans considering statistical efficiency only and new compromise ALT plans to sacrifice some statistical efficiency in return for improved overall properties including estimobility probability and robustness for the model assumptions are developed under the assumptions of constant stress, intermittent inspection, Type I censoring and lognormal failure distribution which has been one of the popular choices of failure distributions in the extensive engineering applications of ALT. Computational experiments are conducted to compare with four ALT plans including two proposed ones under continuous and intermittent inspections over a range of parameter values in terms of asymptotic variance, sensitivities for guessed input values, and proportion of estimable samples, etc. The small and moderate sample properties for the proposed ALT plans designed under asymptotic criterion are also investigated by Monte Carlo simulation.

• 응용통계연구
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• 제25권1호
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• pp.115-123
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• 2012

In animal tumorigenicity data, tumor onsets occur at several sites and onset times cannot be exactly observed. Instead, the existence of tumors is examined only at death time or sacrifice time of the animal. Such an incomplete data structure makes it difficult to investigate the effect of treatment on tumor onset times; in addition, such dependence should be considered when censoring due to death is related with tumor onset. A bivariate frailty effect is incorporated to model bivariate tumor onsets and to connect death with tumor. For the inference of parameters, EM algorithm is applied and a real NTP(National Toxicology Program) dataset is analyzed as an illustrative example.