• 한국신뢰성학회지:신뢰성응용연구
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• 제16권1호
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• pp.48-55
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• 2016

Purpose: The purpose of this study is to identify the object-oriented metrics which have strong impact on the reliability and fault-proneness of software products. The reliability and fault-proneness of software product is closely related to the design properties of class diagrams such as coupling between objects and depth of inheritance tree. Methods: This study has empirically validated the object-oriented metrics to determine which metrics are the best to predict fault-proneness. We have tested the metrics using logistic regressions and artificial neural networks. The results are then compared and validated by ROC curves. Results: The artificial neural network models show better results in sensitivity, specificity and correctness than logistic regression models. Among object-oriented metrics, several metrics can estimate the fault-proneness better. The metrics are CBO (coupling between objects), DIT (depth of inheritance), LCOM (lack of cohesive methods), RFC (response for class). In addition to the object-oriented metrics, LOC (lines of code) metric has also proven to be a good factor for determining fault-proneness of software products. Conclusion: In order to develop fault-free and reliable software products on time and within budget, assuring quality of initial phases of software development processes is crucial. Since object-oriented metrics can be measured in the early phases, it is important to make sure the key metrics of software design as good as possible.

• 한국사회정책
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• 제25권2호
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• pp.305-332
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• 2018

본 연구는 고용중심 복지국가의 재정 성과를 확인하는 것에 그 목적이 있다. 특히 본 연구가 주목하는 것은 고용중심 복지국가가 창출한 고용이 무엇이냐이다. 양질의 일자리가 창출되지 않으면 고용중심 복지국가로의 전환이 기대했던 실업과 빈곤 감소, 나아가서 재정건전성 회복을 담보할 수 없다는 주장이 제기되고 있기 때문이다. 이에 본 연구에서는 고용중심 복지국가로의 전환 맥락에서, 국가의 복지 노력을 통해 창출된 고용의 질을 파악하고 그것이 궁극적으로 국가 재정에 어떤 영향을 미쳤는가를 실증적으로 파악하고자 한다. 분석은 복지국가가 창출한 고용과 재정성과 간의 시간적 선후관계를 반영하여 Baron과 Kenny(1986)의 3단계 매개효과 검증을 적용한다. 분석결과, 고용중심 복지국가의 공공 복지 노력이 적어도 통계적인 차원에서는 기대만큼의 효과를 가지는 유효한 개혁은 아니었던 것으로 보인다. 오히려 저임금, 비자발적 시간제 고용과 같은 질 낮은 일자리 확대에 정적(+) 영향을 미쳤으며, 이는 나아가서 고용중심 복지국가로의 전환으로 기대했던 재정 위기 해소에도 기여하지 못하는 장벽이 된 것으로 보인다. 따라서 복지국가의 재정건전성을 확보하는 전략으로 단순히 고용의 총량을 늘리는 것은 실효성을 가지기 어려우며, 충분하고 질 좋은 일자리의 창출을 위한 노력이 수반되어야 하겠다.

• 한국의류학회지
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• 제32권4호
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• pp.562-572
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• 2008

This study is to understand the current situation of the Seoul Collection and suggest market oriented strategies in order to establish a more effective fashion market. Three elements-time, form, and, place-were defined to analyse the dynamics of the collection and two factors-customer/competitor oriented information and information interaction among participants-were employed to evaluate the Seoul collection toward market orientation. The data were collected from the collection participants via an in-depth interview. The identified major market factors were: 1. Time-In order to create a desirable market, the opening time of the Seoul Collection needs to be rescheduled in accordance with the openings of other countries. Also the time must be suitable to the buyer's movement. 2. Product-Products which did not meet the needs of the market and their unrealistically high prices were two main factors that hindered sales. 3. Place-Although the place was a vital factor to the success of the collection, the facility was not fully a suitable location for buyers to place orders. Additionally, the analyzed data indicated the low market-oriented Seoul collection. Vital to elevating the Seoul Collection to meet the global standard, therefore, more practical research and merchandise planning should be arranged in advance.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.451-452
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• 2007

In this paper, we simulate power system transient stability using object-oriented programming(OOP). OOP is a more flexible method than procedual programming. There are several advantages in dynamic system simulation using OOP. We also calculate critical fault clearing time using energy functions for detailed models.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2010년도 추계학술대회 논문집
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• pp.643-644
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• 2010

• 아동학회지
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• 제26권5호
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• pp.15-30
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• 2005

The subjects of this study were 31 mothers and their first-born infants from middle class families living in Seoul. Mother-infant interactions were filmed at 5 and 13 months of age during naturalistic play situations at home. Questionnaire data were also collected. Results revealed that both maternal didactic and social interactions decreased over the 5 to 13 month time period but (only for infants) object-oriented interaction increased over time. Infant object-oriented interaction at 13 months was predicted by cumulative effects of both mother's social stimulation at 5 months and infant social interaction at 13 months. Infant's social interaction at 13 months was predicted by infant's object-oriented interaction at 13 months. Infant language development was predicted by mother's didactic stimulation.

• 품질경영학회지
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• 제31권3호
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• pp.114-125
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• 2003

In this paper, we deal with the problem of modeling of agent-based robot manufacturing cell. Its role is becoming increasingly important in automated manufacturing systems. For Object Oriented & Queueing Petri Nets (OO&QPNs), an extended formalism for the combined quantitative and qualitative analysis of different systems is used for structure and performance analysis of mobile robotic cell. In the case study, the OO&QPN model of a mobile robotic cell is represented and analyzed, considering multi-class parts, non-preemptive priority and alternative routing. Finally, the comparison of performance values between Shortest Process Time (SPT) rule and First Come First Serve (FCFS) rule is suggested. In general, SPT rule is most suitable for parts that have shorter processing time than others.

• Journal of the Korean Wood Science and Technology
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• 제39권5호
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• pp.381-389
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• 2011

The effect of organoclays on the mechanical properties of cured phenol formaldehyde resin and oriented strand lumber made from Mountain Pine Beetle killed pine strands was analyzed. Three organoclays were used: a natural montmorillonite, hydrophobic organically modified 10 A, and hydrophilic organically modified 30 B. The oriented strand lumber samples were less creep deformation as well as improved internal bonding strength by adding organoclays in the order of 10 A 2% > MMT 2% > 30 B 2% > control. Furthermore, time-temperature superposition (TTS) analysis was proved to be able to predict the long-term creep behavior of MPB-OSL samples.

• Journal of Information Technology Applications and Management
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• 제11권3호
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• pp.147-159
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• 2004

Empirical evidence on the maintainability of object-oriented systems is far from conclusive, partly due to lack of representativeness of the subjects and systems used in the study. The present research empirically examined this issue with the systems that are mission-critical. currently operational and maintained by professionals. It was found that the 00 group appeared to consume less time while maintaining more amount of software artifacts than the NOO counterpart. This economical utilization of time appeared evident regardless of software development life cycle. This was due to the usefulness of UML for impact analysis which contributed to effective comprehension and communication. Insufficient design specifications led to ambiguity and costly defects in transferring design solutions to development. Also. the encapsulation of 00 seemed to reduce mental loads at maintenance tasks and improved code reuse. However, the number of files to manage increased and thus. dependency management is required for the 00 systems.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2009년도 춘계학술발표회 논문집
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• pp.75-78
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• 2009

기존의 수치지도는 2차원 도엽기반으로 되어 있어 정확성 및 최신성을 요하는 사용자의 요구조건을 충족하기에 많은 어려움이 있다. 본 연구에서는 객체형 연속수치지도의 요구사항을 분석하고 관련 시스템을 설계하였다. 객체형 연속수치지도는 3차원 연속객체로 최선성과 정확성을 갖고 있으며, 관리, 변환, 서비스, 변화정보관리, 수신갱신 및 동시갱신 시스템으로 세분화하여 시스템을 설계하였다.