• Journal of KIISE:Software and Applications
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• v.34 no.3
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• pp.196-211
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• 2007

In the Product Line Engineering (PLE), current studies about an analysis of the feature have uncertain and ad-hoc criteria of analysis based on developer’s intuition or domain expert’s heuristic approach and difficulty to extract explicit features from a product in a product line because the stakeholders lack comprehensive understanding of the features in feature modeling. Therefore, this paper proposes a model of the analyzing commonality and variability of the feature based on the Ontology. The proposed model in this paper suggests two approaches in order to solve the problems mentioned above: First, the model explicitly expresses the feature by making an individual feature attribute list based on the meta feature modeling to understand common feature. Second, the model projects an analysis model of commonality and variability using the semantic similarity between features based on the Ontology to the stakeholders. The main contribution of this paper is to improve the reusability of distinguished features on developing products of same line henceforth.

• Korean Journal of Construction Engineering and Management
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• v.9 no.5
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• pp.159-167
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• 2008

This study provides a effective approach to the construction management problem with the limited number or amount of available resources using the analytic hierarchy process. Construction management is a series of decision making processes for planning and controling of cost, time and quality as main objectives in construction works. When several activities need the limited same resource at the same time, it is very hard to decide the priority of the activities in the real situations. For that the scientific decision making method and procedure for resource allocation are required. This study solves the resource allocation problem by dealing with the decision making problem which the activities are distributed to multiple projects and under multiple criteria. The analytic hierarchy process is a method devised to solve complex multi-criteria decision problems. The result shows that this study can be effectively used to make decisions in situations involving multiple objectives by evaluating the prioritized ranking and degree of the activity alternatives based on the overall preferences.

• KDI Journal of Economic Policy
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• v.17 no.3
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• pp.3-54
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• 1995

외환(外換) 및 자본자유화(資本自由化)의 진전에 따라 환율(換率)의 변동폭이 커지면서 환율(換率)이 국제수지(國際收支)에 미치는 영향에 대한 관심이 높아지고 있다. 환율(換率)이 국제수지(國際收支)에 미치는 효과는 일차적으로 우리나라 수출입함수(輸出入函數)의 가격탄력성(價格彈力性)에 의해 결정되므로 정확한 탄성치(彈性値)를 추정하는 일은 이론적으로나 정책적으로 매우 중요한 의미를 갖는다. 본고에서는 우리나라 수입함수(輸入函數)의 소득(所得) 및 가격탄성치(價格彈性値) 추정에 있어서 사용 가능한 두가지의 가격지수(價格指數), 즉 수입단가(輸入單價)와 수입물가(輸入物價) 중 어느 것을 사용하는 것이 바람직한 것인지를 살펴보고 이중 이론적으로 우월한 지수를 이용하여 수입함수(輸入函數)의 소득(所得) 및 가격탄성치(價格彈性値)를 추정하고자 하였다. 분석으로부터 얻는 중요한 결론(結論)은, 우리나라의 경우 수입함수(輸入函數)의 분석에 있어서 수입단가(輸入單價)보다는 수입물가(輸入物價)를 이용하는 것이 더 적합하리라는 점이다. 이는 또한 우리나라 실질(實質)GNP의 추계에 있어서 현재의 수입단가(輸入單價) 이용방식에서 수입물가(輸入物價) 이용방식으로 편제방법을 바꾸는 것이 바람직하다는 것을 의미한다. 이같은 결론은 이론적, 실증적인 변에서 아래와 같은 네가지 이유에 근거한다. 먼저 이론적인 면에서는 첫째, 수입단가(輸入單價)가 물가지수(物價指數)로서 갖추어야 할 통계적 일관성을 갖추지 못하고 있다는 점을 지적할 수 있다. 즉 수입단가(輸入單價)는 어느 일정 규격조건(規格條件)의 상품가격(商品價格)을 일관성 있게 추적하는 것이 아니므로 잡다한 품질규격의 평균가격(平均價格)으로 나타날 가능성이 높으며 이러한 변에서 가격변화(價格變化)를 정확히 반영하지 못한다. 둘째, 수입단가지수(輸入單價指數)는 가격변화(價格變化)가 전혀 없을 때에도 총수입(總輸入)의 품목별 구성(構成)이 바뀌면 변동하는 속성을 지니고 있어 가격변동(價格變動) 상황(狀況)을 오도할 가능성을 지니고 있다. 다음으로 실증적인 면에서는 첫째, 수입단가(輸入單價)를 이용한 수입함수(輸入函數)에서는 가격변수(價格變數)의 계수(係數)가 이론상 기대되는 것과는 반대되는 부호를 가짐으로써 수입함수(輸入函數))로서의 기본적인 요건을 만족시키지 못하는 것으로 나타나고 있다. 둘째, 단가지수(單價指數)를 이용한 경우 소득(所得)과 상대가격(相對價格)을 회귀변수로 하는 수입함수(輸入函數)에서 장기안정적인 균충관계(均衝關係)가 존재하지 않은 것으로 판명되었다. 반면 수입물가(輸入物價)를 이용한 수입함수(輸入函數)에서는 각 변수의 계수(係數)가 이론적 기대치에 부합하였으며 장기안정적인 균충관계(均衝關係)가 성립하는 것으로 나타나고 있다. 한편 미국에서는 수출입단가지수(輸出入單價指數)의 문제점에 대한 오랜 연구 결과, 1989년부터 단가지수(單價指數)의 편제를 아예 중단하는 조치를 취한 바 있으며, GNP추계에 있어서도 종래의 수출입단가(輸出入單價) 대신 수출입물가(輸出入物價)를 이용하는 방식으로 그 편제방법을 변경한 바 있다.

• The KIPS Transactions:PartD
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• v.19D no.1
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• pp.63-80
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• 2012

Mobile devices with Android OS and iOS have been emerged as mobile computing devices where various software applications are deployed. Furthermore, they are anticipated to be used not only for traditional personal computing but also for enterprise computing. However, such mobile devices have their intrinsic characteristics such as limited resources and flexible network capabilities, which are not revealed in traditional computers. Hence, there is high demand for methods to develop mobile applications with reflecting their intrinsic characteristics. Since those characteristics belong to non-functional requirements, they should be reflected in architecture design while designing mobile applications. To design architecture, the architecture drivers that are architecture non-functional requirements are decided from mobile application characteristics. Conventional architecture design methods do not consider those characteristics so that the methods cannot be straightforwardly applied to mobile applications. In this paper, to efficiently develop mobile applications reflecting those characteristics, we propose a set of architecture patterns and define a guideline to apply those patterns. First, we define the characteristics of mobile applications distinguished and derive architectural drivers from them. Then, we propose architecture patterns in terms of static and dynamic views and define an architectural guideline to apply the patterns to designing architecture for mobile application. And, we perform case studies to verify the applicability of proposed patterns. Finally, we assess the proposed architecture patterns by proving how the patterns can fulfill identified architecture drivers and by comparing our approach with previous works.

• CRM연구
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• v.2 no.2
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• pp.53-70
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• 2009

Understanding consumer behavior based on the analysis of the customer data is one essential part of analytic CRM. To do this, the analytic skills for data extraction and data processing are required to users. As a user has various kinds of questions for the consumer data analysis, the user should use database language such as SQL. However, for the firm's user, to generate SQL statements is not easy because the accuracy of the query result is hugely influenced by the knowledge of work-site operation and the firm's database. This paper proposes a natural language based database search framework finding relevant database elements. Specifically, we describe how our TableRank method can understand the user's natural query language and provide proper relations and attributes of data records to the user. Through several experiments, it is supported that the TableRank provides accurate database elements related to the user's natural query. We also show that the close distance among relations in the database represents the high data connectivity which guarantees matching with a search query from a user.

• Journal of the Korean association of regional geographers
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• v.15 no.6
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• pp.763-773
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• 2009

This study is the basic data to design development directions and development standards of resources and facilities for establishing provision-oriented marine tourism development plans, and it aims to help develop provision-oriented marine tourism by drawing planning index and considering its priority necessary for provision-oriented marine tourism development. The findings of the study are as follows. As the result of analysis on four aspects, specific standards and plans for marine tourism development index, it showed environmental aspect, socio-cultural aspect, management aspect, and economic aspect in order. According to the result, the environmental aspect is considered important as the plan to solve problems working as inhibition factors instead of local development, due to local culture and environment disruption. Besides, as the result of iult of iuland priority of 13 items w of iure specific factors and specific plans, durability of resource use, iulroveand envisurrf rdings, receptive culacity, conservesidesand transmissidesnvicultures, and iulroveand ein the quality of life, stability of resource use, quality management of tourist attractions, competency intensificesidesof residents, income increase of residents, PR marketing, role of public sectors, increase in the local industry, and increase in employment were shown in order. Software-oriented plans should be made to preserve overall nature of local areas rather than hardware-oriented plans and development of environmental aspect that merely considers preventing environment destruction.

• KIPS Transactions on Software and Data Engineering
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• v.5 no.7
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• pp.319-326
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• 2016

Given the attributes of mobile apps that shorten the time to make purchase decisions while enabling easy purchase cancellations, usability can be regarded to be a highly prioritized quality attribute among the diverse quality attributes that must be provided by mobile apps. With that backdrop, mobile app developers have been making great effort to minimize usability hampering elements that degrade the merchantability of apps in many ways. Most elements that hamper the convenience in use of mobile apps stem from those potential errors that occur when GUIs are designed. In our previous study, we have proposed a technique to analyze the usability of mobile apps using user behavior logs. We proposes a technique to detect usability hampering elements lying dormant in mobile apps' GUI models by expressing user behavior logs with finite state models, combining user behavior models extracted from multiple users, and comparing the combined user behavior model with the expected behavior model on which the designer's intention is reflected. In addition, to reduce the burden of the repeated test operations that have been conducted by existing developers to detect usability errors, the present paper also proposes a mobile usability error detection automation tool that enables automatic application of the proposed technique. The utility of the proposed technique and tool is being discussed through comparison between the GUI issue reports presented by actual open source app developers and the symptoms detected by the proposed technique.

• Food Science and Preservation
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• v.11 no.1
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• pp.122-125
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• 2004

Factor analysis is estimated using housewives's intention data in Seoul province. Rice consumers considered safety, high nutritive value, shape and cultivation region as important factors in buying rice. The factors of food safety are brand and quality certification mark. The differences of two housewife groups on safety factor are caused by residence type, employment existence and residence region. The marketing strategies for rice containing food safety target housewives living in apartment, Gang Nam region. Also selling extension for target consumers housewives should be employed.

• Korean Journal of Food Science and Technology
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• v.53 no.5
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• pp.585-592
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• 2021

This study compared the quality characteristics of commercial Cheddar cheese of dairy types (DT) and vegan types (VT) using electronic sensory evaluation (nose and tongue) and texture profile analysis (TPA). The electronic nose detected acetaldehyde, 2-methylbutanal, and n-butanol in all samples, whereas 2,3-pentanedione and pentan-2-one were detected in DT1, VT1, and VT3. The electronic tongue detected various intensities of six tastes in the two types, regardless of the raw material. Principal component analysis by electronic sensory evaluation revealed the differences between the pattern for VT. The TPA results showed that the textures of DT and VT were not classified according to the raw material. However, the protein content affecting texture was <0.6% for VT compared with that for DT. These results are expected to be useful for establishing quality indicators in developing vegan cheese products with characteristics similar to those of dairy cheese.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.13 no.6
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• pp.143-154
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• 2018

This study is intended to look into the effects of SCM(supply chain management) competency and process improvement on operational performance in small and venture companies. To achieve this, a survey was empirically carried out to 179 small and venture manufacturing companies. The findings showed that the SCM competency had a significant effect on the process improvement and operational performance in small and venture companies, adopting all hypotheses. And the process improvement had a significant mediating effect on the relationship between SCM competency and operational performance in small and venture companies, adopting hypothesis 4. As for the findings, strategic alliance, technology development, competency concentration as SCM competencies and starting preparation, detailed planning, implementation management as process improvements were factors that have positive effects on quality performance, cost reduction and profit increase as operational performances in small and venture companies. In other words, the better process and performance by the maximized SCM competencies require selective input strategies for strategic alliance, technology development and competency concentration in small and venture companies. And for its early application and settlement, the starting preparation and detailed planning of business process within small and venture companies need to be jointly put in action under clear company-wide goal management. Consequently, the expected performance can be maximized when strict management and implementation lead to these attributes.