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신호정,이상준 한국생산관리학회 2022 한국생산관리학회지 Vol.33 No.2
This study empirically investigates the retailers’ problems in allocating size-variants while procuring apparel items from the supplier. Owing to the limited resources and dynamic relationship among the supply chain participants, retailers may not secure sufficient order quantities, ultimately resulting in stockouts and service failures to consumers. A retailer must determine not only the appropriate order quantity of a product but also the proportion of the order quantity of each variant. Imbalance in allocation of variants may lead to a stockout at the variant level. In this study, we identify the causes of misallocations in size-variants of apparel products, considering that the demand for a certain apparel size is relatively stable. We hypothesize and evaluate the impacts of previous stockout frequency, seasonality, and stockout-based substitution. The empirical findings of this study indicate that more previous stockouts, summer and winter seasons, and demand substitution of larger-size variants for the variants sold-out aggravate misallocation problems. This is the first study to explain product variant level stockouts from the viewpoint of resource allocation. This study is meaningful for providing practical implications based on the findings. 소매기업이 의류 제품을 주문하는 시점에서 치수별 어떠한 비율로 주문량을 구성할 것인가의 문제는 한정된 자원의 효율적인 배분과 연관된 의사결정 영역이다. 치수별 공급량의 불균형으로 인해 특정 치수가 조기 품절되면, 제품 구성 전체의 지속적인 판매가 어려워지고, 고객들이 다른 치수의 구매를 시도하는 대체 구매 현상이 발생한다. 치수별 판매비율의 왜곡은 장기적 수요예측에도 악영향을 미친다. 본연구에서는 의류 제품의 치수별 공급량 배분 불균형에 영향을 주는 요인들을 조사한다. 과거 품절 횟수, 계절성, 대체 구매가 치수별 공급량 배분에 영향을 미친다는 가설을 세우고 다중회귀분석을 통해 이를 검증하였다. 분석 결과, 과거의 품절 횟수가 많을수록, 계절적으로는 여름과 겨울에, 대체 구매가 많을수록 치수별 공급량 배분에 있어서 불균형이 심화되는 것으로 나타났다. 본 연구는 제품 속성 단위의 품절 원인을 자원의 효과적인 배분이라는 관점에서 살펴본 첫 번째 실증연구라는 점에서 의의가 있다. 또한, 본 연구에서의 각 분석 결과가 현실적인 시사점을 제공한다는 점에서 실무적으로도 의의가 있다.
Legal Compliance of Chinese Viewers and Opportunism of Online Video Platforms
신호정,Cheng Hui,이상준 경희대학교(국제캠퍼스) 국제지역연구원 2022 아태연구 Vol.29 No.4
For decades, there has been growing attention to copyright infringement issues in the Chinese digital entertainment industry. Under the stricter supervision and regulation of the Chinese government, Chinese video-on-demand (VOD) platforms are under pressure to compete for exclusive licensing. Even though the platforms endeavor to produce more original series and diversify revenue sources instead, they still need to invest in copyrighted videos to capture customers from rivals as well as retain them. Therefore, the platforms make opportunistic or even illegal moves which may generate profit but lower customer satisfaction. Despite the importance of the rising issues of online VOD platforms, research has not been conducted extensively. Therefore, we investigate the influences of legal compliance and opportunism on purchase intention of Chinese online VOD users in this study. Based on the literature, we develop hypotheses between legal compliance, opportunism, perceived value, brand loyalty, consumer satisfaction, and purchase intention and examine the relationships between them using structural equation models with survey data. All hypotheses are supported except for those with opportunism, indicating that legal compliance leads to purchase intention of online VOD users through perceived value, brand loyalty, and consumer satisfaction.
신호정,Stefan Bister,이상준 한국생산관리학회 2022 韓國生産管理學會誌 Vol.33 No.4
This study aims to find empirical evidence of the contribution of information technology (IT) adoption in enhancing transportation safety. We analyze train accidents that occurred in European countries between 1980 and 2014. The findings indicate that the adoption of IT leads to a lower number of accidents, thus improving safety. Specifically, countries with a high level of IT adoption for their track networks show fewer serious accidents than those with low IT adoption. However, serious accidents have not decreased over time, indicating a limited positive effect of IT adoption. In addition, serious accidents such as rolling stocks and people at crossings continue to occur. The results indicate that improvement in transportation safety leveraged by intangible IT must accompany the quality assurance of physical systems and activities in basic transportation services.
신호정,손상용,Long-Hai Cui,변철수,허훈,이제희,김영철,한상욱,조용관 대한위암학회 2015 Journal of gastric cancer Vol.15 No.3
Purpose: Obesity is associated with morbidity following gastric cancer surgery, but whether obesity influences morbidity after laparoscopic gastrectomy (LG) remains controversial. The present study evaluated whether body mass index (BMI) and visceral fat area (VFA) predict postoperative complications. Materials and Methods: A total of 217 consecutive patients who had undergone LG for gastric cancer between May 2003 and December 2005 were included in the present study. We divided the patients into two groups (‘before learning curve’ and ‘after learning curve’) based on the learning curve effect of the surgeon. Each of these groups was sub-classified according to BMI (<25 kg/m2 and ≥25 kg/m2) and VFA (<100 cm2 and ≥100 cm2). Surgical outcomes, including operative time, quantity of blood loss, and postoperative complications, were compared between BMI and VFA subgroups. Results: The mean operative time, length of hospital stay, and complication rate were significantly higher in the before learning curve group than in the after learning curve group. In the subgroup analysis, complication rate and length of hospital stay did not differ according to BMI or VFA; however, for the before learning curve group, mean operative time and blood loss were significantly higher in the high VFA subgroup than in the low VFA subgroup (P=0.047 and P=0.028, respectively). Conclusions: VFA may be a better predictive marker than BMI for selecting candidates for LG, which may help to get a better surgical outcome for inexperienced surgeons.