• Journal of Korea Society of Digital Industry and Information Management
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• v.15 no.3
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• pp.89-100
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• 2019

Uniform and integrated college desks and chairs have low efficiency of loading for transportation and delivery and low efficiency of storage for warehousing due to their simple uniform physical properties, thus increasing logistics costs for companies and decreasing their competitiveness. In an effort to overcome the limitations of previous studies, this study analyzed the stages of logistics for desks and chairs in college lecture rooms via the transportation route including the factory warehouses and local warehouses and via the delivery route from local warehouses by the region to the orderers including college lecture rooms. The study developed a model for the rationalization of corporate logistics by making a variable folding desk and chair capable of distance adjustment according to height to replace the uniform and integrated college desks and chairs in lecture rooms. A model was developed between the old uniform and integrated college desks and chairs and the new variable folding desks and chairs for three scenarios of cost development including product storage costs, transportation costs from the specialized factory warehouses to the local warehouses by the region, and delivery costs from the local warehouses to college lecture rooms as the orderer. For the generalization of the model, it was applied to each of the 90%, 95%, and 99% service levels.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.209-210
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• 2022

사회적 문제로 떠오르고 있는 건설산업에서 늘 만연한 산업재해 발생을 막기 위해서는 다양한 이해관계자들의 노력을 투자해야 한다. 특히, 이해 관계자들 사이에서 주문자는 프로젝트의 의사 결정 구조의 최상위에 있다. 따라서 주문자의 안전과 건강에 대한 인식은 전체 건설 현장의 안전을 확보하는 과정에 직접적인 영향을 미친다. 이러한 관점에서 본 연구는 최근에 도입된 고객에 대한 의무적인 안전 및 건강 조치에 관한 각 이해 관계자의 인식 차이를 확인하는 것을 목표로 한다. 또한 한국적 맥락에서 구체적인 이행 계획을 제시한다. 분석에 사용된 데이터는 주문자, 안전 관리자, 현장 관리자와 같은 이해 관계자를 대상으로 한 설문 조사를 통해 수집되었으며, 수집된 데이터는 분산 분석과 같은 다변량 분석 방법을 사용하여 정량적으로 검토되었다. 분석 결과, 소유자에 대한 안전 및 건강 의무의 도입이 필요한 것으로 판명되었으며, 안전 및 건강 전문가를 행동 계획으로 지정하고 운영하는 것이 합리적이라고 간주되었다. 저자들은 이번 연구 결과가 한국의 관련 규제 개정을 위한 기본 자료로 활용될 수 있을 것으로 기대하고 있다. 또한, 추가 연구로서, 규제 개선 후 효과에 대한 검토는 도메인에 크게 기여할 것이다.

• Journal of Auto-vehicle Safety Association
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• v.16 no.2
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• pp.20-26
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• 2024

The delivery using drones has been attracting attention because it can innovatively reduce the delivery time from the time of order to completion of delivery compared to the current delivery system, and there have been pilot projects conducted for safe drone delivery. However, the current drone delivery system has the disadvantage of limiting the operational efficiency offered by fully autonomous delivery drones in that drones mainly deliver goods to pre-set landing sites or delivery bases, and the final delivery is still made by humans. In this paper, to overcome these limitations, we propose obstacle detection and landing site selection algorithm based on a vision sensor that enables safe drone landing at the delivery location of the product orderer, and experimentally prove the possibility of station-to-door delivery. The proposed algorithm forms a 3D map of point cloud based on simultaneous localization and mapping (SLAM) technology and presents a grid segmentation technique, allowing drones to stably find a landing site even in places without prior information. We aims to verify the performance of the proposed algorithm through streaming data received from the drone.

• The Transactions of the Korea Information Processing Society
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• v.1 no.2
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• pp.194-201
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• 1994

Recently, as application fields of software is extended, relative importance of software make a gradual increase and importance of development cost is being increased. However, as former evaluation model of development cost evaluate at the functional point of view for the most part, at this paper, I intend to propose evaluation model of software development cost COSMOS-Q(COSt MOdel for Subcontract-Quality) which one evaluate also in quality as well as function. The model proposed in this paper set the goal at software orderer evaluate software cost exactly with only order specification information. At this paper, I proposed cost evaluation model and evaluated it's validity refering to review result in ISO/SC7 about a software quality feature with extraction of quality feature factor which produce change of cost and set up the evaluation measure adoptable as order condition.

• Journal of the Korea Institute of Building Construction
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• v.11 no.1
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• pp.61-72
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• 2011

Management performance of a construction company can be the sum of management performance of each different project. Therefore, the measurement of management performance following construction projects is essential for securing the competitiveness of a company. However, most research has been related to the performance measurement of the construction industry and companies and little has been conducted on individual project's performance. In particular, building projects have various characteristics depending on construction orderer, type and commissioning entity but no performance indicators have been selected based on this classification. This study aims to select performance indicators for subdivided areas based on project characteristics as well as those which can be commonly used to measure management performance at construction and trial run stages of building projects. In the future, those indicators proposed in this study can be used for developing methodology to evaluate them and later applied to actual building projects to generate quantitative data. In addition, they are expected to be used as reference for selecting indicators to measure management performance of plant and civil engineering projects.

• Journal of the Korean Society of Safety
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• v.33 no.2
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• pp.68-75
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• 2018

The safety management cost system under the Construction Technology Promotion Act has contributed greatly to the prevention of construction accidents according to the chronological changes and social demand, but various problems have been pointed out. The biggest problem is that the safety management cost is earmarked very low because other items of safety management costs except for the safety inspection are not appropriately included in the actual construction site. Furthermore, it has been pointed out that it is difficult to settle the orderer due to the lack of specific use criteria. Therefore, in order to secure the proper safety management cost, this study is to estimate the actual cost by using of specification, quantity, material cost, labor cost for each type of the safety management item The results of this study were compared with the 71 cases of safety management costs in the safety management plan. In addition, analysis of unclear or unnecessary items in the current safety management cost and criteria and suggestions for improvement are provided. It is hoped that the results of this study will contribute to the rational safety management rate calculation.

• Journal of the Korean Society of Safety
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• v.35 no.4
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• pp.56-63
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• 2020

The government has established various policies focusing on accident prevention to reduce the accident rate in the construction industry, but the effect is still insignificant. These results allude that there are still many problems in terms of usability. Although construction safety accidents usually have characteristics that occur during construction, the laws and systems should include the pre-construction cycle (plan/order - design - construction business management- construction) to eliminate risk factors in advance. The purpose of this study is to analyze the performance evaluation of the construction safety system before construction rather than during construction. In the pre-construction phase (plan/ order-design-constuction business management), we intend to investigate and analyze measures to prevent safety accidents and identify a system that lacks the ability to implement. Specifically, we analyzed what to focus on as precautionary measures in the planning, ordering, designing, and supervising. To improve them, we made a questionnaire based on the role related to construction safety for each subject, and seek implications for lack of performance through interviews. Based on the results, some ways to improve the safety system were proposed.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.54-62
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• 2001

Although claims and disputes may be never avoided in construction industry, until 1998, there are no systematic claims in the public sector in Korea. But, because of IMF, Contractors have been recognized that cost management is essential factor and contractual right can be demanded against the Public Orderer. Many affirmative effect such as, appearance of new professional service, prevention of lower quality construction, restrain of unnecessary budget expenditure, arrangement of duplicated or triplicated liability and revision of unnecessary administrative control may be anticipated through alleging claims, but in site representative manager and construction company may have ambiguous fear, somebody tried to allege claims. Therefore, to activate systematic construction claims, 32 public construction project claims alleged by contractors from 1998 to 2001 were analyzed, inactivated reasons of claims were examined and contractor's action plan to allege claims was suggested in this paper.

• Journal of the Society of Disaster Information
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• v.18 no.2
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• pp.314-323
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• 2022

Purpose: To study the effect of the amended Occupational Safety and Health Act on the expansion of the employer's responsibility and obligations and the evaluation of the employer on the improvement of the safety management system. Method: An academic discussion was conducted by comparing the contents of previous studies with the analysis results. A questionnaire was prepared using the measurement tools collected from previous studies, and statistical multiple regression analysis was performed with the collected data. Result: Research hypothesis It was found that the expansion of responsibility and obligations of the business owner and the reinforcement of the employer's evaluation of the ordering party had a positive (+) effect on the improvement of the safety management system. Conclusion: The expansion of the responsibility and obligations of the employer and the strengthening of the evaluation of the owner of the orderer are having a positive effect on the improvement of the construction safety management system for the prevention of construction accidents.

• Journal of Software Assessment and Valuation
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• v.15 no.2
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• pp.1-7
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• 2019

Program similarity analysis consists of substantial similarity and access. Substantial similarity is a judgment of how similarly the program source code is quantitatively. Access determines the degree of similarity by analyzing comments in the program or other contextual evidence. In the case of manuals, it may be the subject of legitimacy analysis. Manuals can be divided into three types as follows. First, a master manual is a document created during the development stage of a product. It is a user manual that contains all the functionality of the product and its derivatives. Second, the customer manual is a manual that is open only to the primary customer and orderer. Third, the user manual is a document that is applied to the final OEM production stage and is open to the end purchaser. In this paper, we compare the master manual seized from the suspect and the master manual provided by the suspect on the Internet. It then determines how similar this master manual is and includes the victim company's original and property values.