• 한국유기농업학회지
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• 제32권3호
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• pp.289-298
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• 2024

이번 연구에서는 항산화 효과가 있는 약용식물로 알려진 대황, 견우자, 호장근, 질려자를 메탄 저감 사료첨가제로 이용하고자 in vitro 반추위 발효성상과 메탄 발생량에 미치는 영향에 대해 연구하였다. 각 약용식물을 건조시켜 분쇄 후 기질의 0.5%를 첨가하여 24시간 배양 실험을 진행하였다. 반추위 pH는 대조구와 약용식물 첨가간의 유의적인 차이가 없었으며 적정 수치를 보였다. 건물 소화율과 총 가스 발생량은 약용식물 전 첨가구에서 대조구에 비해 유의적으로 높았다. 메탄 발생량은 질려자 처리구에서만 대조구에 비해 유의적으로 낮았다. 이외에도 암모니아태 질소와 휘발성 지방산 모두 약용식물 처리구에서 유의적으로 높았으며, 특히 propionate 생성량은 전 처리구에서 유의적으로 높았다. 연구결과, 약용식물 첨가가 반추위 발효에는 부정적인 영향을 미치지 않았음을 확인하였다. 이 중 질려자 처리구에서 반추위 발효성상에 부정적인 영향을 보이지 않고 메탄 저감을 보이는 사료첨가제로서 활용성을 확인하였다. 추후 다양한 첨가 수준에 대한 연구를 진행하여 적정수준을 찾고 급여사료 종류, 가축의 연령, 사육환경 등 다양한 조건을 고려한 in vivo 실증 연구가 필요할 것으로 사료된다.

• Journal of Platform Technology
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• 제11권6호
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• pp.56-67
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• 2023

제4차 산업혁명 흐름과 COVID-19 팬데믹으로 증가한 전자부품 수요는 인류의 삶을 편리하게 만들었지만, 전자폐기물의 발생량 또한 증가시켰다. 전자폐기물의 영향에 대한 논의는 환경, 건강, 사회문제 관점을 중심으로 이루어져 왔고, 전 세계의 법령도 이러한 문제들을 해결하는 데 초점을 맞추어 왔다. 하지만 일반적인 폐기물과 달리 전자폐기물에서는 기술 유출 및 개인정보 유출과 같은 보안 문제가 발생할 수 있다. 현재 전자폐기물 보안에 관한 논의는 다른 분야에 비해 매우 부족한 수준이다. 이에 본 연구는 상대적으로 덜 주목받았던 전자폐기물 보안 동향을 실증적으로 분석하고자 하였고 세 가지 접근법을 적용했다. 첫째, 연도별 문헌과 언론보도의 추세를 분석하여 전자폐기물에 관한 전반적인 논의 추이를 파악했다. 둘째, 전자폐기물 보안 위험을 다룬 문헌들을 분석하여 해당 분야의 키워드를 바탕으로 전자폐기물 보안 동향을 파악했다. 셋째, 각종 보안관련 국가지침 내 전자폐기물 처리 관련 규정을 검토하고, 이를 통해 전자폐기물 보안 대책 설계 필요성을 평가했다. 본 연구는 국내에서 거의 처음으로 전자폐기물을 보안 관점에서 다룬 연구라는 점과 전자폐기물 보안 동향을 다차원적으로 분석했다는 점에 의의가 있다. 전자폐기물 보안 동향 분석 결과는 전자폐기물과 전자폐기물 보안 문제에 대한 국내의 인식을 높이고 전자폐기물 보안 위험에 선제적으로 대응할 기회를 제공할 것으로 기대된다.

• Journal of Nutrition and Health
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• 제57권4호
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• pp.403-417
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• 2024

본 실험 결과, EF 열수 추출물이 항산화 활성뿐만 아니라, MAPK 신호 경로의 활성을 조절하고 전 염증성 사이토카인의 수준을 낮추는 것으로 나타났으며, 특히 EF 열수 추출물의 낮은 농도보다 높은 농도에서 더 뛰어난 효과를 나타내었다. 이는 EF 열수 추출물이 NADPH 산화효소, 항산화 단백질 및 염증성 단백질 발현을 조절하여 위 조직 내 급성 위염을 완화시킬 수 있음을 시사한다.

• 경영정보학연구
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• 제26권2호
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• pp.137-153
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• 2024

본 연구는 웨어러블 기기에서 수집된 라이프로그 데이터를 활용하여 고령화 사회에서 증가하고 있는 치매를 조기에 진단하여 관리할 수 있는 예측 모델을 개발하고, 이를 기반으로 한 상업적 활용전략을 제안하는 것을 목표로 하였다. 이 연구는 전문의의 병리진단을 기반으로 한 60~80대 174명의 대상자로부터 수집된 12,184개의 라이프로그 정보(수면 및 활동 정보)와 치매 진단 데이터를 활용하였다. 연구 과정에서 수면과 활동 데이터를 포함하는 다차원적인 데이터셋을 표준화 하였고 다양한 머신러닝 알고리즘으로 분석하였으며, 가장 높은 ROC-AUC점수를 보여준 랜덤 포레스트 모델이 가장 우수한 성능을 보였다. 또한 ablation test를 통해 수면과 관련된 변수들과 활동과 관련 변수들의 제외가 모델 예측력에 미치는 영향을 평가하였고, 이러한 변수들이 모델의 예측력에 유의미한 영향력을 가지고 있음을 확인하였다. 마지막으로, 개발된 모델의 상업적 활용 전략의 가능성을 탐구함으로써, 치매예방 시스템의 상업적 확산을 위한 새로운 방향을 제안하였다.

• 문화기술의 융합
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• 제10권5호
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• pp.743-749
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• 2024

최근 대학 교육에서 생성형 AI의 이용 추이가 활발해지고 있지만, 생성형 AI를 활용한 주얼리 디자인 교육 및 연구는 아직 미흡한 실정이다. 이에 따라 주얼리 디자인 개발 교육 및 아이데이션(ideation) 단계에서 생성형 AI를 활용한 주얼리 디자인 아이디어 발상과 표현의 시각화 가능성과 한계점, 그리고 전공 대학생의 생성형 AI의 경험 및 적용에 대해 논의하고자 한다. 생성형 AI가 학습 경험에 미치는 영향 분석을 위하여 '사용성', '유용성', '신뢰성', '만족도'의 관점에서 분석하였다. 그 결과, 생성형 AI는 피교육자에게 사용성과 유용성 측면에서 긍정적 결과를 관찰하였으며, 개인화된 맞춤형 교육과 집단지성을 활용한 효과에 대한 가능성을 확인하였다. 주얼리 디자인 교육과 생성형 AI의 접목은 융합 교육의 일환으로, 생성형 AI의 학습자 사용 경험을 분석하여 주얼리 디자인 교육의 효과적 활용을 위한 초석을 마련하는 데 본 연구의 의의가 있다. 이러한 교육은 미래 사회의 인재 양성을 위한 시대 흐름을 반영한 교육으로 학습자의 폭넓은 창의적 사고 증진에 기여할 것이다.

• 마케팅과학연구
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• 제19권1호
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• pp.37-46
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• 2009

The Census Bureau of the Department of Commerce announced in May 2008 that U.S. retail e-commerce sales for 2006 reached $ 107 billion, up from $ 87 billion in 2005 - an increase of 22 percent. From 2001 to 2006, retail e-sales increased at an average annual growth rate of 25.4 percent. The explosive growth of E-Commerce has caused profound changes in marketing channel relationships and structures in many industries. Despite the great potential implications for both academicians and practitioners, there still exists a great deal of uncertainty about the impact of the Internet channel introduction on distribution channel management. The purpose of this study is to investigate how the ownership of the new Internet channel affects the existing channel members and consumers. To explore the above research questions, this study conducts well-controlled mathematical experiments to isolate the impact of the Internet channel by comparing before and after the Internet channel entry. The model consists of a monopolist manufacturer selling its product through a channel system including one independent physical store before the entry of an Internet store. The addition of the Internet store to this channel system results in a mixed channel comprised of two different types of channels. The new Internet store can be launched by the independent physical store such as Bestbuy. In this case, the physical retailer coordinates the two types of stores to maximize the joint profits from the two stores. The Internet store also can be introduced by an independent Internet retailer such as Amazon. In this case, a retail level competition occurs between the two types of stores. Although the manufacturer sells only one product, consumers view each product-outlet pair as a unique offering. Thus, the introduction of the Internet channel provides two product offerings for consumers. The channel structures analyzed in this study are illustrated in Fig.1. It is assumed that the manufacturer plays as a Stackelberg leader maximizing its own profits with the foresight of the independent retailer's optimal responses as typically assumed in previous analytical channel studies. As a Stackelberg follower, the independent physical retailer or independent Internet retailer maximizes its own profits, conditional on the manufacturer's wholesale price. The price competition between two the independent retailers is assumed to be a Bertrand Nash game. For simplicity, the marginal cost is set at zero, as typically assumed in this type of study. In order to explore the research questions above, this study develops a game theoretic model that possesses the following three key characteristics. First, the model explicitly captures the fact that an Internet channel and a physical store exist in two independent dimensions (one in physical space and the other in cyber space). This enables this model to demonstrate that the effect of adding an Internet store is different from that of adding another physical store. Second, the model reflects the fact that consumers are heterogeneous in their preferences for using a physical store and for using an Internet channel. Third, the model captures the vertical strategic interactions between an upstream manufacturer and a downstream retailer, making it possible to analyze the channel structure issues discussed in this paper. Although numerous previous models capture this vertical dimension of marketing channels, none simultaneously incorporates the three characteristics reflected in this model. The analysis results are summarized in Table 1. When the new Internet channel is introduced by the existing physical retailer and the retailer coordinates both types of stores to maximize the joint profits from the both stores, retail prices increase due to a combination of the coordination of the retail prices and the wider market coverage. The quantity sold does not significantly increase despite the wider market coverage, because the excessively high retail prices alleviate the market coverage effect to a degree. Interestingly, the coordinated total retail profits are lower than the combined retail profits of two competing independent retailers. This implies that when a physical retailer opens an Internet channel, the retailers could be better off managing the two channels separately rather than coordinating them, unless they have the foresight of the manufacturer's pricing behavior. It is also found that the introduction of an Internet channel affects the power balance of the channel. The retail competition is strong when an independent Internet store joins a channel with an independent physical retailer. This implies that each retailer in this structure has weak channel power. Due to intense retail competition, the manufacturer uses its channel power to increase its wholesale price to extract more profits from the total channel profit. However, the retailers cannot increase retail prices accordingly because of the intense retail level competition, leading to lower channel power. In this case, consumer welfare increases due to the wider market coverage and lower retail prices caused by the retail competition. The model employed for this study is not designed to capture all the characteristics of the Internet channel. The theoretical model in this study can also be applied for any stores that are not geographically constrained such as TV home shopping or catalog sales via mail. The reasons the model in this study is names as "Internet" are as follows: first, the most representative example of the stores that are not geographically constrained is the Internet. Second, catalog sales usually determine the target markets using the pre-specified mailing lists. In this aspect, the model used in this study is closer to the Internet than catalog sales. However, it would be a desirable future research direction to mathematically and theoretically distinguish the core differences among the stores that are not geographically constrained. The model is simplified by a set of assumptions to obtain mathematical traceability. First, this study assumes the price is the only strategic tool for competition. In the real world, however, various marketing variables can be used for competition. Therefore, a more realistic model can be designed if a model incorporates other various marketing variables such as service levels or operation costs. Second, this study assumes the market with one monopoly manufacturer. Therefore, the results from this study should be carefully interpreted considering this limitation. Future research could extend this limitation by introducing manufacturer level competition. Finally, some of the results are drawn from the assumption that the monopoly manufacturer is the Stackelberg leader. Although this is a standard assumption among game theoretic studies of this kind, we could gain deeper understanding and generalize our findings beyond this assumption if the model is analyzed by different game rules.

• 한국유통학회지:유통연구
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• 제17권3호
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• pp.1-24
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• 2012

본 연구는 세계 최대의 프랜차이즈 시장으로 부상하고 있는 중국 프랜차이즈 시장에서 가맹 본부와 가맹점 간의 재계약 성과에 영향을 미치는 요인에 관한 연구이다. 선행 연구를 토대로 하여 프랜차이즈 재계약 결정요인으로서 가맹본부특성, 가맹점 특성, 본부와 가맹점간 관계적 특성, 환경적 특성 등 4가지로 설정하고, 가맹본부 특성, 가맹점 특성, 관계적 특성, 환경적 특성을 본부의 경영성과와 가맹점에 대한 만족도 영향변수로, 본부의 경영성과와 본부의 가맹점에 대한 만족도를 재계약의도의 영향변수로 하여 연구모형을 설정하였다. 이러한 연구모형을 실증적으로 검증하기 위하여 중국 프랜차이즈 시장에서 가맹본부를 중심으로 설문조사를 실시하여 실증분석을 하였다. 설정한 가설 중에서 경영성과 영향요인으로서 본부특성, 가맹점특성, 관계적 특성, 환경적 특성 요인이 영향을 미치는 것으로 나타났으나, 본부특성 구성요인 중 가맹점에 대한 통제와 관계적 특성 중 몰입은 경영성과에 유의한 영향을 미치지 않는 것으로 나타났다. 본부의 가맹점에 대한 만족도 영향요인으로는 가맹점 특성이 채택되었지만 관계적 특성인 신뢰, 몰입과 갈등 변수등도 유의하지 않은 것으로 나타났다. 가맹본부의 경영성과와 가맹점에 대한 만족은 가맹본부의 재계약 의도를 높이는 것으로 나타났다. 이러한 연구분석 결과는 중국 시장에 이미 진출해 있거나 향후 진출하려는 국제 프랜차이즈 기업의 전략적 분석과 수립에 도움이 될 구체적인 실무지식을 제공해 줄 수 있을 것으로 기대된다.

• 벤처혁신연구
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• 제2권2호
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• pp.95-115
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• 2019

오늘날 경영환경은 국가의 신용도나 기업의 신용등급이 사회적으로 매우 중요하게 인식되고 있을 뿐만 아니라 국제 거래에 있어서도 중요하게 부각되고 있는 것이 현실이다. 이처럼 국내외에서 신용평가의 중요성 및 신뢰성이 중요해지는 시점에서 본 연구는 기업의 수익성, 안전성, 활동성, 재무성장성, 손익성장성의 재무비율을 분석하여 그 재무지표들이 기업가치 및 법인세에 미치는 영향을 살펴보고, 더불어 기업가치 및 법인세가 신용평가에 미치는 영향도 함께 분석해 보고자 한다. 이를 위해 2017년도 코스피 유가증권상장기업 465개 기업을 대상으로 해당 기업의 재무비율을 계산하여 기업가치 및 법인세가 신용평가에 미치는 영향을 실증분석 하였다. 또한 추가 연구를 통해 K-IFRS 도입 첫해인 2011년부터 최근까지인 2018년까지의 8년간 KOSPI 유가증권 상장기업의 재무자료를 시계열 분석하여 신뢰성 및 일관성있는 결론을 도출하려고 노력하였다. 연구 결과 각 재무비율인 수익성, 안전성, 활동성, 재무성장성, 손익성장성을 나타내는 변수들 간의 유의수준도 손익성장성을 제외하고는 99%에서 유의함을 알 수 있었다. 연구 가설의 검증 결과 코스피 유가증권상장기업들의 수익성은 기업가치 및 법인세에 유의적인 영향을 미치는 반면 안전성과 성장성은 기업가치 및 법인세에 유의적인 영향을 미치고 있지 못하였다. 또한 활동성은 기업가치에는 유의적인 영향을 미치나 법인세에는 유의적인 영향을 미치고 있지 못하다는 결과를 얻었다. 이와 더불어 기업가치가 기업신용도 및 법인세에 유의적인 영향을 미치고, 법인세도 기업신용도에 유의적인 영향을 미친다는 것을 확인하였고 이를 통해 법인세의 매개효과 기능도 있음을 알 수 있었다. 또한 추가 연구 결과 2011년부터 2018년까지 8년간의 재무비율을 살펴보면 KARA와 LTAX 두 변수는 KISC에 1% 유의수준에서 유의적임을 확인할 수 있었던 반면, LEVE 변수는 KISC에 유의적이지 않음을 알 수 있었다. 본 연구에서 확인된 바와 같이 기업들의 신용지표로 세무상 정보의 영향을 분석한 선행연구가 많지 않은 현실에서 본 연구는 기업의 법인세에 영향을 미치는 기업재무 정보를 확인하는데 큰 의의가 있으며 더 나아가 기업의 세무 자료가 자세히 공개되지 않는 상황에서 재무자료를 통한 세무정책 수립에도 많은 유효성이 있을 것으로 생각된다.

• 대한간호
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• 제31권4호
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• pp.77-99
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• 1992

The study was carried out at W. hospital, an affiliated hospital of Y university, involved a total of 163 patients who were discharged from the hospital between May 1990 und March 199J. Data collection was twice, just prior to discharge and a minimum of three months post discharge. Thirty patients who lived within a hour travel time of the hospital received home care during the three months post discharge. Nursing diagnoses and nursing interventions For these patients were analyzed in this study. The results of the study are summarized as follows : 1. Discharge needs for the subjects of the study were analyzed using Gordon's eleven Functional categories and it was found that 48.3% of the total sample had identified nursing needs. Of these, the needs most frequently identified were in the categories of sexuality, 79.3 %, health perception, 68.2 % self concept, 62.5 %, and sleep and rest 62.5 %. Looking ut j he nursing diagnosis that were made for the 30 patients receiving home care, the following diagnoses were the most frequently given; alteration in sexual pattern 79.3%, alterations in health maintenance, 72.6%, alteration in comfort, 68.0%, depression, 64.0%, noncompliance with diet therapy, 6.3.7%, alteration in self concept, 55.6%, and alteration in sleep pattern, 53%. 2. In looking at the effects of home nursing care as demonstrated by changes in the functional categories over the three month period, it was Found that of the 11 functional categories, the need level for health perception, nutrition, activity and self concept decreased slightly over the three month period. On the average sleep patterns improved, but restfulness was slightly less and bowel elimination patterns improved but satisfaction with urinary elimination was slightly less. On the other hand, role enactment, sexuality, stress management and spirituality decreased slightly. The only results that were statistically significant at the 0.05 level were improvement. in digestion and decrease in pain. No statistically significant changes were found in ability related to ADL, the total ADL Score at discharge was $19.78{\pm}8.234, and after 3 months $19.01{\pm}8.12$. Considering that a majority of the patients were over 60 years of age and that many had brain or spinal cord injuries, the fact that their ADL ability did nor deteriorate after discharge can be interpreted as related to a positive impact by the home health care nurses. Similarly there was a slight be not statistically significant decrease in the quality of life scores between the two lest times(l47.83 at discharge and 113.02 at the three month period). Again, when the chronic nature of thee problems facing these patients is considered this maintenance of quality of life can be interpreted as a positive impact by the home health care nurses. 3. One of the home care nursing activities was diagnosis. For this activity it was found that for nine functional health categories(sexuality and spirituality excepted) there were 20 nursing diagnoses. The most frequent were noncompliance, alteration in skin integrity both actual and potential, and impaired physical mobility in that order. 4. Delivery of home health care by the home health nurses included the following nursing activities; assessment, patient education, demonstration of care activities, counselling, direct care to the patient and referrals. Direct care included changing dressings, bladder irrigations, changing Foley catheters, measurement of residual urine, perineal care, position change, back care, oral hygiene, exercise and massage of motion exercises, cleansing enemas, tracheostomy suctioning and tracheostomy care, care of dentures, applications of heat and other similar nursing activities. In conclusion almost 50% of (he sample indicated a need for continued nursing care at the time of discharge and for the patients in the sample who received home care there was a slight decrease in nursing needs but while the patients had chronic and debilitation problems there was ill decrease in ADL abilities or in quality of life. Further study needs Lo be done La increase the reliability and validity of the tool that was used to measure home health care needs. It is also recommended that study by done using a randomized sampling with a control group to compare patients who receive home care with those who do not.

• Asia pacific journal of information systems
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• 제22권2호
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• pp.21-38
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• 2012

Until recently, successful implementation of ERP systems has been a popular topic among ERP researchers, who have attempted to identify its various contributing factors. None of these efforts, however, explicitly recognize the need to identify disparities that can exist between organizational information requirements and ERP systems. Since ERP systems are in fact "packages" -that is, software programs developed by independent software vendors for sale to organizations that use them-they are designed to meet the general needs of numerous organizations, rather than the unique needs of a particular organization, as is the case with custom-developed software. By adopting standard packages, organizations can substantially reduce many of the potential implementation risks commonly associated with custom-developed software. However, it is also true that the nature of the package itself could be a risk factor as the features and functions of the ERP systems may not completely comply with a particular organization's informational requirements. In this study, based on the organizational memory mismatch perspective that was derived from organizational memory theory and cognitive dissonance theory, we define the nature of disparities, which we call "mismatches," and propose that the mismatch between organizational information requirements and ERP systems is one of the primary determinants in the successful implementation of ERP systems. Furthermore, we suggest that customization efforts as a coping strategy for mismatches can play a significant role in increasing the possibilities of success. In order to examine the contention we propose in this study, we employed a survey-based field study of ERP project team members, resulting in a total of 77 responses. The results of this study show that, as anticipated from the organizational memory mismatch perspective, the mismatch between organizational information requirements and ERP systems makes a significantly negative impact on the implementation success of ERP systems. This finding confirms our hypothesis that the more mismatch there is, the more difficult successful ERP implementation is, and thus requires more attention to be drawn to mismatch as a major failure source in ERP implementation. This study also found that as a coping strategy on mismatch, the effects of customization are significant. In other words, utilizing the appropriate customization method could lead to the implementation success of ERP systems. This is somewhat interesting because it runs counter to the argument of some literature and ERP vendors that minimized customization (or even the lack thereof) is required for successful ERP implementation. In many ERP projects, there is a tendency among ERP developers to adopt default ERP functions without any customization, adhering to the slogan of "the introduction of best practices." However, this study asserts that we cannot expect successful implementation if we don't attempt to customize ERP systems when mismatches exist. For a more detailed analysis, we identified three types of mismatches-Non-ERP, Non-Procedure, and Hybrid. Among these, only Non-ERP mismatches (a situation in which ERP systems cannot support the existing information needs that are currently fulfilled) were found to have a direct influence on the implementation of ERP systems. Neither Non-Procedure nor Hybrid mismatches were found to have significant impact in the ERP context. These findings provide meaningful insights since they could serve as the basis for discussing how the ERP implementation process should be defined and what activities should be included in the implementation process. They show that ERP developers may not want to include organizational (or business processes) changes in the implementation process, suggesting that doing so could lead to failed implementation. And in fact, this suggestion eventually turned out to be true when we found that the application of process customization led to higher possibilities of failure. From these discussions, we are convinced that Non-ERP is the only type of mismatch we need to focus on during the implementation process, implying that organizational changes must be made before, rather than during, the implementation process. Finally, this study found that among the various customization approaches, bolt-on development methods in particular seemed to have significantly positive effects. Interestingly again, this finding is not in the same line of thought as that of the vendors in the ERP industry. The vendors' recommendations are to apply as many best practices as possible, thereby resulting in the minimization of customization and utilization of bolt-on development methods. They particularly advise against changing the source code and rather recommend employing, when necessary, the method of programming additional software code using the computer language of the vendor. As previously stated, however, our study found active customization, especially bolt-on development methods, to have positive effects on ERP, and found source code changes in particular to have the most significant effects. Moreover, our study found programming additional software to be ineffective, suggesting there is much difference between ERP developers and vendors in viewpoints and strategies toward ERP customization. In summary, mismatches are inherent in the ERP implementation context and play an important role in determining its success. Considering the significance of mismatches, this study proposes a new model for successful ERP implementation, developed from the organizational memory mismatch perspective, and provides many insights by empirically confirming the model's usefulness.