• Title/Summary/Keyword: Product Line Engineering

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Developing Digital Games through Software Reuse

  • Neto, Beatriz;Fernandes, Lucia;Werner, Claudia;De Souza, Jano Moreira
    • Journal of Information Processing Systems
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    • v.6 no.2
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    • pp.219-234
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    • 2010
  • Gaming is an old humans' habit. Games help in logical development and encourage learning of theoretical and practical concepts. Besides they offer entertainment and challenge. The advent of the personal computer changed this tradition. Every year new challenges arise in a digital format, which lead the young and adults to spend hours in front of a computer or TV screen in an attempt to overcome hurdles and reach an objective. Quality, sophistication, and constant innovation are attained through complex computer software that almost has an obligation to improve as each new title is released, due to this game development becomes a challenge. Considering that a game title is software and thus faces the same restrictions of business applications, this article intends to analyze, under the optics of reuse, if game development resorts to reuse, and where and how this happens.

A Study on Domain Analysis Based on Goals, Scenarios, and Features of Mobile Contents System Based on Product Line (프로덕트라인 모바일 콘텐츠 시스템의 목표, 시나리오, 휘처 기반의 도메인 분석 연구)

  • Lee, Min-Tae;Kim, Chul-Hyun;Kim, Gwi-Yeoun;Kim, Byung-Ki
    • Proceedings of the Korea Information Processing Society Conference
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    • 2007.05a
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    • pp.275-278
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    • 2007
  • 모바일 콘텐츠 시스템을 편리하고 빠르게 생산하기 위해서는 프로덕트라인의 적용이 필요하며 공통성과 가변성을 식별하는 도메인 분석은 프로덕트라인 적용의 핵심이다. 그러나 현재 모바일 콘텐츠 시스템의 도메인 분석은 휘처 중심의 도메인 분석 방법(feature-oriented approach)을 이용하고 있어 성숙되지 않은 도메인이나 새로운 도메인의 경우 분석의 결과가 프로덕트라인 방식으로 생산하고자 했던 본래의 목표를 만족시키지 못하고 분석의 단계적인 절차를 제공하지 못한다. 따라서 본 논문에서는 기존에 제시된 목표, 시나리오, 휘처 기반의 도메인 분석방법을 적용하는 방안을 제시하여 이러한 문제점을 해결한다.

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Development of Ultrasonic Test Equipment for Investigating the Morphology of Barrier Materials

  • Kim Sung-Ho;Lee Young-Sam
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.6 no.3
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    • pp.217-222
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    • 2006
  • Recently, LG chemical corporation developed new material called HYPERIER, which has an excellent barrier characteristic. It has many layers which are made of nano-composite within LDPE(Low-Density Poly Ethylene). In order to guarantee the quality of the final product from the production line, a certain test equipment is required to investigate the existence of layers inside the HYPERIER. In this work, ultrasonic sensor based test equipment for investigating the existence of inner layers is proposed. However, it is a tedious job for human operators to check the existence by just looking at the resounding waveform from ultrasonic sensor. Therefore, to enhance the performance of the ultrasonic test equipment, wavelet and PCA(Principle Componet Analysis) schemes are introduced into neural network scheme which is used for classification. To verify the feasibility of the proposed scheme, some experiments are executed.

An approach to analyze commonality and variability of feature based on Ontology in Software Product line Engineering (Software 제품계열공학에서 온톨로지에 기반한 feature의 공통성 및 가변성 분석모델)

  • Kim Jin-Woo;Lee Soon-Bok;Lee Tae-Woong;Baik Doo-Kwon
    • Proceedings of the Korean Information Science Society Conference
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    • 2006.06c
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    • pp.139-141
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    • 2006
  • 제품계열공학에서 feature diagram(FD)은 개발자의 직관이나 도메인 전문가의 경험에 근거하여 작성되어, feature간의 공통성 및 가변성분석 기준이 불명확하며 비정형적인 feature의 공통성 및 가변성 분석으로 인한 stakeholder의 공통된 이해가 부족한 문제점을 내포하고 있다. 따라서, 본 논문에서는 이를 해결하기 위하여 공통된 feature의 이해를 위해 feature 속성리스트에 기반한 메타 feature모델과 feature간의 의미유사성관계를 이용한 온톨로지를 적용한 공통성 및 가변성 분석모델을 제안한다.

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Retail Product Development and Brand Management Collaboration between Industry and University Student Teams (산업여대학학생단대지간적령수산품개발화품패관리협작(产业与大学学生团队之间的零售产品开发和品牌管理协作))

  • Carroll, Katherine Emma
    • Journal of Global Scholars of Marketing Science
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    • v.20 no.3
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    • pp.239-248
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    • 2010
  • This paper describes a collaborative project between academia and industry which focused on improving the marketing and product development strategies for two private label apparel brands of a large regional department store chain in the southeastern United States. The goal of the project was to revitalize product lines of the two brands by incorporating student ideas for new solutions, thereby giving the students practical experience with a real-life industry situation. There were a number of key players involved in the project. A privately-owned department store chain based in the southeastern United States which was seeking an academic partner had recognized a need to update two existing private label brands. They targeted middle-aged consumers looking for casual, moderately priced merchandise. The company was seeking to change direction with both packaging and presentation, and possibly product design. The branding and product development divisions of the company contacted professors in an academic department of a large southeastern state university. Two of the professors agreed that the task would be a good fit for their classes - one was a junior-level Intermediate Brand Management class; the other was a senior-level Fashion Product Development class. The professors felt that by working collaboratively on the project, students would be exposed to a real world scenario, within the security of an academic learning environment. Collaboration within an interdisciplinary team has the advantage of providing experiences and resources beyond the capabilities of a single student and adds "brainpower" to problem-solving processes (Lowman 2000). This goal of improving the capabilities of students directed the instructors in each class to form interdisciplinary teams between the Branding and Product Development classes. In addition, many universities are employing industry partnerships in research and teaching, where collaboration within temporal (semester) and physical (classroom/lab) constraints help to increase students' knowledge and experience of a real-world situation. At the University of Tennessee, the Center of Industrial Services and UT-Knoxville's College of Engineering worked with a company to develop design improvements in its U.S. operations. In this study, Because should be lower case b with a private label retail brand, Wickett, Gaskill and Damhorst's (1999) revised Retail Apparel Product Development Model was used by the product development and brand management teams. This framework was chosen because it addresses apparel product development from the concept to the retail stage. Two classes were involved in this project: a junior level Brand Management class and a senior level Fashion Product Development class. Seven teams were formed which included four students from Brand Management and two students from Product Development. The classes were taught the same semester, but not at the same time. At the beginning of the semester, each class was introduced to the industry partner and given the problem. Half the teams were assigned to the men's brand and half to the women's brand. The teams were responsible for devising approaches to the problem, formulating a timeline for their work, staying in touch with industry representatives and making sure that each member of the team contributed in a positive way. The objective for the teams was to plan, develop, and present a product line using merchandising processes (following the Wickett, Gaskill and Damhorst model) and develop new branding strategies for the proposed lines. The teams performed trend, color, fabrication and target market research; developed sketches for a line; edited the sketches and presented their line plans; wrote specifications; fitted prototypes on fit models, and developed final production samples for presentation to industry. The branding students developed a SWOT analysis, a Brand Measurement report, a mind-map for the brands and a fully integrated Marketing Report which was presented alongside the ideas for the new lines. In future if the opportunity arises to work in this collaborative way with an existing company who wishes to look both at branding and product development strategies, classes will be scheduled at the same time so that students have more time to meet and discuss timelines and assigned tasks. As it was, student groups had to meet outside of each class time and this proved to be a challenging though not uncommon part of teamwork (Pfaff and Huddleston, 2003). Although the logistics of this exercise were time-consuming to set up and administer, professors felt that the benefits to students were multiple. The most important benefit, according to student feedback from both classes, was the opportunity to work with industry professionals, follow their process, and see the results of their work evaluated by the people who made the decisions at the company level. Faculty members were grateful to have a "real-world" case to work with in the classroom to provide focus. Creative ideas and strategies were traded as plans were made, extending and strengthening the departmental links be tween the branding and product development areas. By working not only with students coming from a different knowledge base, but also having to keep in contact with the industry partner and follow the framework and timeline of industry practice, student teams were challenged to produce excellent and innovative work under new circumstances. Working on the product development and branding for "real-life" brands that are struggling gave students an opportunity to see how closely their coursework ties in with the real-world and how creativity, collaboration and flexibility are necessary components of both the design and business aspects of company operations. Industry personnel were impressed by (a) the level and depth of knowledge and execution in the student projects, and (b) the creativity of new ideas for the brands.

Implementation of Digital Laser Welding Cell for Car Side Panel Assembly (차체 사이드 패널 조립을 위한 디지털 레이저용접 셀 구현)

  • Park Hong Seok;Choi Hung Won;Kang Mu Jin
    • Journal of the Korean Society for Precision Engineering
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    • v.22 no.5 s.170
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    • pp.113-120
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    • 2005
  • Because of the turbulent markets and the increasing demand on product quality, the application of new technology to practice is increasingly important. In case of automotive industries, they take interest in laser welding to solve these problems because laser welding has many advantages such as good accessibility, welding quality, fast welding speed and so on. To apply this technology to welding of car body, the data of laser welding are collected through lots of the experiment according to the material, geometry and layer number of welding points. Based on the experiment results and the information of product, i.e. the car side panel, the clustering of stitches for laser welding was carried out and the optimal equipments are selected through the comparison between the requirements of welding and the potential of equipments. Using these results, laser welding cell for the car side panel are configured with the concept of the digital manufacturing, which ensures maximum planning security with visualization and simulation. Finally, the optimal laser welding cell is chosen by the evaluation of alternative cells with assessment criteria.

Development and Full-scale Application of the Alternative Carbon Source Based on the Substrate Compatibility (미생물 순응 호환성에 기반한 대체탄소원 개발 및 실용화 사례)

  • Jung, In-Chul;Jo, Hyeon-Gil;Lee, Du-Ho;Kang, Dong-Hyo;Lim, Keun-Taek;Lee, Sung-Hak;Kim, Chang-Won
    • Journal of Korean Society of Environmental Engineers
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    • v.27 no.5
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    • pp.491-498
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    • 2005
  • J sewage treatment plant (WWTP) in Busan has used methanol as an external carbon source for the biological denitrification process. Methanol is widely used. but rather expensive and very dangerous in handling. Therefore, it has been required that the economic alternative carbon source must be developed. By-product from a fine chemical industry can be Purified by removing high molecular weight substances using the ultrafilter membrane separation process and RBDCOD fraction becomes $98{\sim}99%$ of COD substances in the purified by-product. The purified by-product containing three types of alcohols, methanol, prophylenglycol and methoxypropanol; showed similar chemical characteristics to the methanol, a main external carbon source, in biodegradation pathway. Shown above, the compatibility between main and alternative carbon sources has been achieved. Also very short or no adaptation period is necessary in the case of exchanging these carbon sources. The compatibility between external carbon sources is an essential element for stabilizing WWTP operations. During the full-scale application test of the by-product, the alternative carbon source line got on par with the treatment efficiency of the methanol line. With the test result, J-WWTP changed methanol to a fine chemical by-product, in two out of three J-WWTP lines. Moreover, it is expected that 55.4% of the external carbon source cost reduction can be achieved in the alternative carbon source applied lines.

Antimutagenic and Antileukemic Activities Aloe vera L.

  • Lee, Keyong-Ho;Kang, Hee-Gon;Cho, Choa-Hyoung;Lee, Moon-Joon;Lee, Jae-Hyun;Kim, Chang-Han
    • Natural Product Sciences
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    • v.6 no.2
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    • pp.56-60
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    • 2000
  • We investigated that the extract of Aloe vera L. and its fractions exert antimutagenic activity against Salmonella typhimurium TA98 and TA100, and antileukemic effect against K562 human leukemia cell line. The aqueous ethanolic extract of A. vera L. was revealed to have antimutagenic effect on the AF-2 (2-(2-furyl)-3-(5-nitro-2-furyl)-acrylamide) in Salmonella mutation assay. Among the three fractions (fractions A, B and C) separated by silica gel chromatography, fraction C $(50\;{\mu}g/plate)$ exhibited the greatest antimutagenic effect on the AF-2 with inhibition rate of 84 and 90% in Salmonella typhimurium TA98 and TA100, respectively. The fraction C $(500\;{\mu}g/ml)$ inhibited the growth of K562 human leukemia cell line by 93% in MTT assay. However, the components of A. vera L. did not exhibit cytotoxic effect against MDBK bovine normal kidney in MTT assay.

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Automatic Inspection for LCD Panel Defect (LCD(Liquid Crystal Display) Panel의 결점 검사)

  • Lee Y.J.;Lee J.H.;Ko K.W.;Cho S.Y.;Lee J.H.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.946-949
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    • 2005
  • This paper deals with the algorithm development that inspects defects such as Bright Defect Dots, Dark Defect Dots, and Line Defect caused by the process of LCD(Liquid Crystal Display). While most of LCD production process is automated, the inspection of LCD panel and its appearance depends on manual process. So, the quality of the inspection is affected by the condition of worker. Especially, the more LCD size increases, the more the worker feels fatigued, which causes the probability of miss judgement. So, the automated inspection is required to manage the consistent quality of the product and reduce the production costs. In this paper, to solve these problems, we developed the imaging processing algorithm to inspect the defects in captured image of LCD. Experimental results reveal that we can recognize various types of defect of LCD with good accuracy and high speed.

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로보트 아크용접에서 시각인식장치를 이용한 용접선의 추적

  • 손영탁;김재선;조형석
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1993.10a
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    • pp.550-555
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    • 1993
  • The aim of this paper is to present the development of visual seam tracking system equipped with visual range finder. The visual range finder, which consists of a CCD camera and a diode laser system with line generating optics, developed to recognize the types of weld joints and detect the location of weld joints. In practical applications, however, images of the weld joints are often degraded due to spatters, are flares, surface specularity, and welding smoke. To overcome the problem, this paper proposes a syntactic approach which is a class of artificial intelligence techniques. In the approach, the type of weld joint is inferred based upon the production rules which are linguiques grammars consisting of a set of line and junction primitives of laser strip image projected on weld joint. The production rules eliminate several noisy primitives to create new primitives through the merging process of primitives. After the recognition of weld joint, arc welding is started and the location of weld joints is repeatedly detected using a spring model-based template matching in which the template model is a by-product of the recognition process of weld joint. To show the effectiveness of the proposed approach a series of experiments-identification and robotic tracking-are conducted for four different types of weld joints.

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