• Asia pacific journal of information systems
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• 제17권2호
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• pp.1-28
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• 2007

The success of new product development is a key factor for getting competitive advantages. Marketing research has been investigating marketing capability, manufacturing technical capability, cross-functional integration, market knowledge competence, market orientation, and competitive environment as the key success factors of new product development. Recently, the role of IT infrastructure in enhancing new product advantage is assumed in the literature. However, the empirical studies on the role of IT infrastructure are lacking. The purpose of this study is to empirically exam the impacts of IT infrastructure on new product competitive advantage. In this study, IT infrastructure is conceptualized as the flexibility of IT infrastructure. Based on previous research, a conceptual model is established by incorporating the direct impact of IT infrastructure flexibility and its indirect impact through the key success factors on new product development. To empirically test the research model, data are surveyed from a pair of IS department and Marketing department of 92 consumer goods manufacturers. By employing PLS technique, the measurement reliability and reliability of research variables are tested and the path analysis is conducted to do the hypothesis testing. The path analysis shows that IT infrastructure flexibility has no direct effect on new product advantage, However, the indirect effect of IT infrastructure is found, which is mediated by marketing capability, manufacturing technical capability, cross-functional integration, and market orientation respectively. Hence, The flexible IT infrastructure increases cross-functional integration (H1), market orientation (H3), marketing capability (H5), and manufacturing technical capability (H6). All success factors of new product development excepts for competitive environment have a positive association with new product competitive advantages (from H10 to H14). Finally, the path from IT infrastructure flexibility to cross-functional integration, to market orientation, to market knowledge capability, and to new product advantage is found as the strongest path. These results indicate that the flexible IT infrastructure enhances information sharing with multiple departments and collaboration within a distributed innovation environment. The collaboration among departments positively affects the level of customer and competitor intelligence. The ability to obtain knowledge about customers and competitors makes firms to adapt to a changing environment quickly and to respond to customers' demands adequately. The flexible IT infrastructure also enhances the capability of organization to more rapidly respond to the changes in product design resulting in faster product development and reduced costs. In addition to, it enhances marketing capability by the two-way communications with customers and the analyses of various kinds of customer data. In brief, the finding of this study suggests that the flexible IT infrastructure allows many firms to pursue sustained new product competitive advantages. This study advances research on IT infrastructure in two important aspects. First, by Integrating marketing research and IS research, this study develops a conceptual model on the role of IT infrastructure in enhancing new product advantage. Second, it empirically finds the indirect impacts of IT infrastructure on new product advantage, which confirms the potential for the IS field to contribute to new product development research. The limitations of this study are also discussed to provide research directions for future research.

• 대한교통학회지
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• 제27권1호
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• pp.73-81
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• 2009

여객통행과 화물통행에서 도착지를 선택하는 것은 여러 요인에 영향을 미치지만, 많은 연구들이 도착지의 유인력(Attractiveness)이 중요한 변수라고 제시하고 있다. 유인력 추정방법 중 전통적으로 사용되고 있는 집계형 (Aggregation) 중력모형 보다 개인의 효용을 극대화하는 비집계형 (Disaggregation)모형이 도착지의 효용을 추정하는데 더 효율적이라는 점이 많은 연구들에서 제기되었다. 본 연구는 제3차 전국물류조사의 화물자동차운전자의 통행일지를 이용한 분석으로서 도착지 선택모형을 구축하고 출발시간대, 도착지의 체류시간, 도착지의 유인력 등을 포함하여 이들의 효과를 분석하며, 정책적으로 활용 가능하도록 모형이용을 제안한다. 분석결과, 도착지행태선택모형에서 인구가 많고, 총통행거리가 짧을수록 효용이 큰 것으로 분석되었다. 인구밀도 측면에서 볼 때 화물차는 인구밀집지역을 운행하는 것을 꺼려하는 것으로 분석되었다. 운송거리 측면에서는 소형화물자동차는 운송거리가 짧을수록, 대형화물자동차는 운송거리가 클수록 효용이 큰 것으로 분석되었다. 업종별로 보면, 비영업용 화물자동차는 거리가 짧을수록 유리한 것으로 분석되었으나, 영업용화물자동차의 경우 거리가 길수록 유리한 것으로 나타났다. TOD별 차종별로 살펴보면, 소형화물자동차의 경우 새벽, 오전첨두, 오후첨두에 주로 출발하였으며, 대형화물차는 낮 시간대를 제외한 시간대에 주로 출발하는 것으로 분석되었다.

• 기술혁신연구
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• 제21권2호
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• pp.169-197
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• 2013

다수의 이론적, 실증적 연구에도 불구하고 지식재산권 제도와 기업의 기술혁신 및 경영성과간의 일반적 인과관계는 명확하지 않다. 본 연구는 산업별 기업 경영성과의 핵심 요인이 상이하다는 점에 주목한다. 이를 바탕으로 (1)지식재산권 강화${\rightarrow}$연구개발의 투입/산출 증가${\rightarrow}$매출증가로 이어지는 기본 성과창출경로가 작용하는 제약 산업, (2)지식재산권 강화와 연구개발 투입/산출간 관계가 약한 반도체산업, (3)연구개발과 매출 간 관계가 약한 조선 산업까지 세 산업을 대상으로 지식재산권 제도가 기술혁신과 경영성과에 미치는 영향을 분석했다. 한국의 특허제도가 선진국 수준에 이른 TRIPs 이후 15년간의 대기업 패널 데이터를 사용했으며, 고정효과모형을 차분 GMM으로 추정해 동태적 인과관계를 분석했다. 결과적으로, 지식재산권 강화가 제약 산업에서는 연구개발의 투입/산출 및 경영성과를 모두 증가시켰지만, 반도체-조선 산업에서는 영향을 미치지 못하는 것으로 나타났다. 즉, 지식재산권 강화를 위한 제도 구축과 정책은 산업별로 맞춤화될 필요가 있으며, 획일적인 강화/약화는 특정 산업의 경영성과 제고에 유의미한 영향을 미치지 못한다.

• 펄프종이기술
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• 제29권1호
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• pp.73-83
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• 1997

Most of the materials used in various industrial fields and also in our daily life are multi-component materials or composite materials, and it is well known that there are many cases where adhesion between the constituents within the bonded systems plays an important role. There are various types of performance evaluation tests for the bonded materials, among which tests for evaluating the bond performance under various conditions may be regarded as the most interesting ones for those engaged in work related to adhesion. I have studied on the mechanism of adhesion form the rheological standpoint with my colleagues, including some students from Korea, and I am very happy to be able to have a talk on some of our research works. In Japan, the so-called "adhesives" are usually classified into two categories;adhesives and pressure sensitive adhesives (PSA). Adhesives are the materials which solidify after bonding and are after used as the structural adhesives because the adhesive strength is comparatively strong. On the other hand, the pressure sensitive adhesives never solidify and are used as PSA tapes, labels or decals. About the adhesives, we have examined the dependence of adhesive strength(shear, tensile, peel) upon both temperature and rate of deformation, and found out some empirical rules which are applicable to most of the adhesive systems. We have also developed a simplified theory of adhesion, which is deseribed in terms of mechanical equivalent mode1 and a few failure criteria. Although some of the common rules can be accounted for according to this theory, it must be pointed out that a fracture mechanical approach ms inevitable especially in the region where the meehanical relaxation time of the adhesive is extremely large [W. W. Lim and H. Mizumachi]. About the pressure sensitive adhesives, we have studied on the PSA performance (peel, tack, holding power) as a function of both the viscoelastic properties and surface chemical properties of the materials, and found out some rules, and again we have developed a theory which deseribes the mechanism. And in addition, we have studied on the miscibility between linear polymers and oligomers, because PSA is generally manufactured by blending gums and tackifier resins. Many phase diagrams have been found and some of them have been analyzed on thermodynamic basis, and it became evident that the miscibility is a very important factor in PSA [H. J. Kin and H. Mizumachi]. In this presentation, I want to emphasize the fact that the adhesion performance is closely related to the structure/property of the adhesives.adhesives.

• 자원환경지질
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• 제26권1호
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• pp.67-81
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• 1993

This dissertation is a basic research on the degradation of rocks and aims at clarifying the relations between the progression of degree of weathering and the variation of chemical composition. The author wants to make clear the degradation of rocks and the process of formation of sedimentary rocks from a standpoint of elucidation of migration of elements. This study is considered to be significant not only as a part of research on the distribution of earth crust materials but as the petrogenesis of rocks. The chemical studies on the weathered rocks have been started relatively early and there are not a few researches on them: Goldich, 1938; Harris, et al., 1966; Ruxton, 1968; Berner, et al., 1982; Kanuss, 1983; Lasaga, 1984; Siagel, 1984. The degree of migration of elements in weathering is the composite result of various factors. Because, at the present time, it is difficult to clarify the individual and composite effects of each factor theoretically and quanititatively, we must accumulate empirical data and use them relatively. In such consideration the author acquired some data of chemical weathering from the chemical analysis of granitic and basaltic rocks in and around Fukuoka city, Japan and granitic rocks in and around Chonju and Iri cities, Korea. Because both rock types studied can be considered as representative materials of acidic and basic rocks compsing the earth crust, it is significant to examine the phenomena of weathering of both rock types. The following results are obtained from the analysis and examinations of chemical compositions of the original and weathered rocks. The loss rate of major elements has no uniformity, but the following relation holds in general; Ca, Na> K, Si> Mg> Fe, Al. As weathering proceeds, the ratio of $Al_2O_3/CaO$ shows increasing phenomena, and that of $Na_2O/CaO$ decreasing. The range of migration of composition is broad in basaltic rocks but narrow in granitic rocks. The reason is that the chemical weathering of basaltic rocks progresses more easily than that of granitic rocks. The chemical weathering potenitial index of basaltic rocks in larger than that of granitic rocks. The reason is that the chemical weathering of basaltic rocks proceeds more easily than that of granitic rocks. In weathering, the decrease of mobile cations such as $Ca^{2+}$, $Na^{2+}$, $Mg^{2+}$ and the increase of $H_2O$ in basaltic rocks are more obvious than in granitic rocks.

• 공학교육연구
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• 제10권4호
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• pp.58-77
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• 2007

대학의 강의평가는 수업효과성에 대한 진단적 피드백을 제공하고 교수에 대한 의사결정에 도움을 주며 학생이 수강 시 활용할 수 있는 정보를 제공하는 등 광범위하게 사용되고 있다. 그러나 활용범위가 확대될 수록 강의평가도구의 타당성과 신뢰성이 제기되고 있으며, 강의평가 제도 자체에 대한 측정학적 연구가 요구되고 있다. 본 연구의 목적은 이공계 대학의 강의평가 결과에 대한 실증적 분석을 통하여 강의평가제도의 순기능을 극대화하기 위한 개선방안을 제안하는 것이다. 평가도구의 타당도와 신뢰도, 평가결과에 대한 문항반응 유형 등을 통계적으로 분석하기 위해 국내 대학교 이공계 개설강의 중 471개 과목의 385명 교수에 대한 총 49,127 명 학생의 강의평가 결과자료를 사용하였다. 분석 결과, 첫째, 강의평가의 유형별 차이를 줄이기 위하여 전공별 또는 수업유형별로 평가문항 군에서 문항을 선택하도록 개선할 것을 제안하고, 둘째, 평가결과점수 상하위 10% 해당하는 강의의 특성을 분석하여 결과활용의 방향을 제시하였다.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제10권2호
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• pp.174-188
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• 2004

제품의 품질 및 가격뿐만 아니라 물질적 풍요로움과 더불어 다변화 되어가는 생활 환경 속에서 소비자의 감성과 선호도를 파악하는 것은 제품 판매 전략의 중요한 성공요소가 되고 있다. 이를 위하여 제품의 기능적 측면뿐만 아니라 개개인의 정서적 감정과 선호도가 반영된 제품의 설계나 디자인 또한 요구되고 있다. 본 연구에서는 사용자의 감성과 선호도를 중심으로 소재를 개발하는 방법의 하나로 협력적 필터링 개인화 기법을 응용하여 패션 디자인 추천 에이전트 시스템(FDRAS-pro)을 제안한다. 텍스타일 기반의 협력적 필터링 기술에서, 예측에 사용될 이웃의 수를 결정하기 위해서 Representative Attribute-Neighborhood 방법을 사용한다. 사용자들간의 유사도 가중치를 계산하기 위해서 피어슨 상관계수(Pearson Correlation Coefficient)를 사용한다. 소재에 대한 사용자의 감성이나 선호도에 대한 텍스타일의 대표 감성 어휘를 추출함으로써 소재 개발을 위한 감성 어휘 데이타베이스를 구축한다. FDRAS-pro는 구축된 감성 어휘 데이타베이스를 기반으로 성향이 비슷한 사용자에게 텍스타일 디자인을 추천한다. 디자인 요소에 따른 감성 분석을 하기 위해서, 텍스타일 디자인을 9가지 디자인 요소(디자인 소재, 모티브대 배경비율, 모티브의 변화도, 해석법, 모티브의 배열, 모티브의 명료성, 명도차, 색상차, 채도차)에 따라 분석하였다. 패션 디자인 추천 시스템으로 개발하여 시스템의 논리적 타당성과 유효성을 검증하기 위해 실험적인 적용을 시도하고자 한다.

• 과학교육연구지
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• 제34권1호
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• pp.33-46
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• 2010

본 연구는 예비 과학 교사들이 보유한 선호 기피하는 과학 교사에 대한 이미지를 알아보는데 목적이 있다. 대구시 소재 경북대학교에 재학 중인 예비 교사 316명을 대상으로 중 고등학교에서 경험한 가장 기억에 남는 선호 기피하는 과학 교사에 대한 이미지에 대해 자유로운 형식으로 서술하도록 하였다. 그 결과 과학 수업 상황, 과학 교사의 이미지의 2가지 영역으로 범주화할 수 있었으며 각각은 다시 세부 영역으로 나누어졌다. 먼저, 과학 수업 상황에서 선호하는 수업 형태는 실험, 관찰, 체험, 관측이었으며 기피하는 것은 문답법이었다. 수업자료로는 프린트, 학습지, 보고서 등의 인쇄 매체를 선호하며 판서자료(칠판)를 기피하는 것으로 드러났다. 그리고 교과지도 방법으로는 이론, 개념 중심으로 지도하는 것을 선호하며 일방적인 암기나 문제 풀이는 기피하였다. 교과 내용 설명방식으로는 상세하게 체계적으로 설명하는 것을 선호하는 반면 설명 부족, 학생을 이해시키지 못하는 방식을 기피하였다. 또한 화기애애, 자유롭게 공부할 수 있는 수업 분위기가 되기를 바라는 예비 과학 교사들이 많았고 딱딱, 지루, 조용한 학습 분위기를 기피하는 경향을 보였다. 둘째, 과학 교사의 이미지에서는 교사의 자질로 인격과 의견을 존중할 줄 아는 자상하고 배려심 깊은 선생님을 선호하고 있었고 반대로 학생에게 신경 쓰지 않고 학생을 인격적으로 무시하는 선생님을 가장 싫어하였다. 교사의 특성 면에서는 맑고 씩씩한 목소리와 밝은 표정, 온화한 표정을 선호하고 튀는 외모와 딱딱한 스타일을 싫어하였다. 이 연구결과에 기초하여 교사의 이미지에 대한 연구가 실증적으로 이루어질 필요가 있으며 선호하거나 기피하는 교사의 이미지는 교육 행정가, 학생, 학부모, 교사 등에 따라 달라질 수 있으므로 이들의 의견을 종합하여 비교하는 연구가 이루어져야 한다.

• 한국병원경영학회지
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• 제11권1호
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• pp.31-53
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• 2006

The objective of this study is to examine the effectiveness of the strategy of hospital specialization by analyzing the differences in expected and perceived services, perceived service quality, satisfaction, and intentions to revisit and recommend the hospital to others between general and specialty hospitals. Data were collected using self-administered questionnaire from patients admitted to four study hospitals: two speciality and two general hospitals. The questionnaire was developed based on SERVQUAL to measure five dimensions of service quality. Four hundreds questionnaires were distributed to inpatients or their guardians and 282 returned questionnaires were used in the analyses. The significance of the differences in study variables between specialty and general hospitals were tested by t-test and $x^2$-test. The factor analysis result confirmed the construct validity of 28 questions asked to measure service quality and resulted in four dimensions of service quality: reliability, assurance, tangible and empathy/responsiveness. Cronbach's Alpha ranged from .9013 to .9358, that confirmed the internal consistency of answers. The study results indicated that patients who used specialty hospitals had higher levels of expected and perceived service, a higher level of perceived service quality, and higher levels of service satisfaction than patients who used general hospitals. Percents of patients who had the intention to revisit the hospital and to recommend the hospital to others were higher among patients in specialty hospitals. The most frequent reason to choose the hospital was the excellence of doctors in both general(29.9%) and specialty(43.8%) hospitals, that was followed by convenient transportation(15.3%) and someone know works at the hospital(15.3%) in general hospitals and other's recommendation(14.6%), and nice amenities(13.1%) in specialty hospitals. Although there were no significant differences in clinical department, age, and sex of patients between general and specialty hospitals, patients who visited speciality hospitals had higher levels of education and income than their counter part in general hospitals. These results suggested that specialty hospitals performed better than general hospitals. Specialization could be a viable strategy to tide over recent financial difficulties experienced by hospitals, particularly small- and medium-sized hospitals.

• 가정과삶의질연구
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• 제14권3호
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• pp.211-222
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• 1996

The purpose of this study is to classify the expenditure behaviors of housewives into some types and to identify the characteristics of the types focucing on diverse expenditure behaviors of urban households. In this study it is assumed that the expenditure behaviors are classified by there factors-(1)the orientation of money saving (2)the orientation of time saving and (3)the orientation of others. The present study suggests following three questions. (1). Can the expenditure behaviors of urban housewives be classified according to the orientation of money saving the orientation of others? (2) What distictions exist among the types? (3) Which variables are useful in classifying the expenditure behaviors? For empirical analysis the data of the study was collected from 650 housewives living in Seoul. The statistical methods adopted for data analysis are frequency percentage mean Pearson's correlation coefficient factor analysis cluster analysis one way ANOVA Duncun's multiple ran e test and discriminant analysis. As the major findings 4 types were extracted, According to the level of each dimensions the names for the each type were given as "the type of attaching importance to money saving" "the type of attaching importance to time and appearance" "the type of attaching importance to money saving and time" "the type of attaching importance to money saving and time" "the type of attaching importance to money saving and time" "the type of attaching importance to money saving and appearance" In "the type of attaching importance to money saving" the significant portion of housewives have high school degrees and compared with other types this type includes more husbands having sales and service job 55% of housewives of "The type of attaching importance to time and appearance" have graduate or higher degrees. The significant part of earned incomes range from 3 million won to 5 million won. The rate of housewives employed in the professional job is higher than other types. In "The type of attaching importance to money saving and time" the rate of the employment of housewives in this type is the highest among the types. In "The type of attaching importance to money saving and appearance" the significant portion of housewives have graduate degrees. In the jobs of he spouses the management job is major. The consciousness of belonging to the middle class is higher than other types. In this type the level of education is high but that of income is not. The result of the discriminant analysis says that the earned income and the consciousness of belonging to a calss are the most critical variables to classify the expenditure behaviors into 4 type The accuray of the classification of the discrimination equation composed of these variables is 47,5% The accuracy is improved by 10%.