• 한국HCI학회:학술대회논문집
• /
• 2006.02b
• /
• pp.487-492
• /
• 2006

컴퓨터 네트워크의 발전에 의해 학습 공간의 시공간적인 확대와 교육 현장에서 교수-학습 과정에 대한 새로운 교수방법을 요구되었고, 유무선 방송, 인터넷 등을 이용하여 다양한 형태의 원격교육이 구체화되어 왔다. 하지만, 현재 운영되는 대부분의 원격교육시스템은 실질적인 학습 상황에서 단방향적인 개별 학습 형태를 보이고 있고, 사용자간의 쌍방향 상호작용을 위해서는 교수자나 학습자에게 일정 수준이상의 기술적 소양과 경제적 부담을 요구한다. 또한 교수자에게는 교수-학습 상황에서 발생하는 학습자 행동에 대한 실시간적인 모니터링과 학습자의 학습과정에 대한 평가의 어려움을, 학습자에게는 자기 반성의 기회를 제대로 제공하지 못하는 문제점을 안고 있다. 이에 본 연구에서는 원격교육에서의 협동학습 지원, 사용자의 기술적, 경제적 부담의 제거, 학습 전(全) 과정에 대한 원활한 모니터링과 피드백 기회의 제공을 목적으로 원격협동학습 시스템을 설계하고, 이를 개발하였다. 본 연구에 의해 개발된 원격협동학습 시스템은 원격협동학습을 지원하는 네트워크 화이트보드, 학습 과정 및 결과를 자연어로 저장하는 저장 모듈, 그리고 저장된 학습 스크립트 파일을 해석하여 재생하는 스크립트 인터프리터로 구성되었다. 네트워크 화이트보드는 소프트웨어적으로 구현되어 부가적인 장치가 불필요하고, 통신 서버를 분산하여 서버 구축에 대한 부담을 제거하였고, 학습 내용 화면을 대화창으로 사용하여 사용자의 사용 편리성을 제고하였다. 또한 원격학습의 장(場)에 교수자가 참여하여 실시간적 모니터링이 가능하고, 학습의 전(全) 과정 및 결과를 저장한 자연어 스크립트 파일에 의해서도 학습자 행동에 대한 모니터링이 가능하다. 저장된 자연어 스크립트 파일은 구현된 인터프리터를 이용한 재생뿐 아니라, 파일 자체만으로도 학습과정을 판독할 수 있고, 스크립트 파일에 대한 해석은 교수자에게는 학습자의 학습 과정에 대한 평가 및 피드백의 근거를, 학습자에게는 자신의 학습 행동에 대한 반성의 기회를 제공한다. 본 시스템은 기존의 원격교육시스템에 비해 장비 및 인터페이스 측면에서 간소화되었고, 원격교육에 면대면 학습 개념을 근사적으로 접목시킨 교수 모델로서의 충분한 가치를 제공하나, 실제적인 학습 적용과 효과에 있어서의 타당성은 차후 검증이 있어야 하고, 또한, 이에 따른 시스템에 대한 지속적인 보완도 필요하다.

• Journal of the Korean Applied Science and Technology
• /
• v.40 no.3
• /
• pp.570-578
• /
• 2023

Experiments on zebrafish embryo toxicity and whitening efficacy, which is an alternative experimental animal model, were conducted using coffee by-products. As a result of the embryo toxicity test treated with the coffee residue extract, the coagulation rate was 3, 3, and 5% at 24, 48, and 72 hpf and concentration of 125 ppm, respectively. The hatching rate of embryos was 73% at the highest concentration of 125 ppm. In the heart beat rate experiment of zebrafish larva, the heart beat rate after 72 hpf was confirmed to be 153 times/60 s' at a concentration of 125 ppm. The negative control group showed no significant change in heart rate compared to the control group at 148 times/60s', and showed low toxicity. In addition, as a result of evaluating the whitening effect in zebrafish, melanin formation was inhibited as the concentration of the coffee residue extract increased. The results of this study suggest the possibility that naturally derived by-product materials can be used as raw materials for cosmetics, and are expected to be used in the cosmetics industry as an example of research that increases the added value of natural product residue.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2023.05a
• /
• pp.12-12
• /
• 2023

지하수자원 관리의 정량적 및 정성적 측면에 있어, 최첨단 인공지능 언어 모델인 ChatGPT의 혁신적인 기능이 활용될 수 있다. 본 발표에서는 지하수 자료에 대한 분석과 도출된 문제의 중요도에 따른 목표를 설정, 그리고 지하수 관리 전략 개발에 있어서의 ChatGPT 활용 방법을 논의할 것이다. 이를 위한 구체적 사례로, 지하수자원 관리에 활용될 수 있는 다양한 도구들의 개발과 고도화에 ChatGPT가 기여하는 방식을 살펴볼 것이다. 이러한 개별 도구들은 지하수자원 관리 결정에 있어 더 나은 예측 및 평가를 제공하여, 지하수 자원 관리의 효율성을 도모할 수 있다. 또한, ChatGPT의 문제 발견 및 해결책 제안 능력에 대해서도 다룰 것이다. 이를 통해 지하수 관리에 있어서의 다양한 문제를 식별하고, 이해당사자들이 보다 효과적으로 대응할 수 있는 방안을 찾아낼 수 있을 것이다. 또한 ChatGPT가 제공하는 다양한 정보 및 문제에 대한 솔루션 접근 방식을 활용한 브레인스토밍 방법을 설명할 것이다. 추가적으로, 일반 인공지능(AGI)의 개발에 근접하면서 지하수 관리의 자동화 및 가속화 그리고 산업 및 환경에 미칠 수 있는 영향에 대해 고찰해 볼 것이다. 이를 위하여, ChatGPT와 같은 인공지능 기술이 더욱 고도화되고 향상되면서, 지하수 관리 및 관련 분야에서의 의사결정, 계획 수립, 그리고 모니터링과 같은 작업들이 어떻게 변화할지에 대하여 토의할 것이다. 본 발표는 지하수 자원 관리 분야에서 ChatGPT와 같은 인공지능 기반 접근법의 가치를 보여주며, 복잡한 지하수 환경 문제를 해결하는 데 있어 첨단 기술의 활용 가능성을 강조할 것이다. 또한, AGI가 등장할 때까지 여전히 요구되는 지하수 분야 도메인 지식과 전문기술의 중요성을 강조할 것이다. 지하수 관리자들의 도메인 지식과 전문적 기술은 인공지능 기반 도구와 결합되어 보다 정확한 분석, 예측 및 해결책 도출을 가속화하며 정교화할 것이다. 결론적으로, 지하수 관리에 대한 종합적인 이해와 전문성을 갖춘 전문가들의 인공지능 기술활용은 지속가능한 지하수의 첨단 관리 효과적 달성에 중요한 계기가 될 것으로 판단한다.

• The Journal of Society for e-Business Studies
• /
• v.12 no.3
• /
• pp.33-47
• /
• 2007

The requirements have been changed during development progresses, since it is impossible to define all of software requirements. These requirements change leads to mistakes because the developers cannot completely understand the software's structure and behavior, or they cannot discover all parts affected by a change. Requirement changes have to be managed and assessed to ensure that they are feasible, make economic sense and contribute to the business needs of the customer organization. We propose a feature-oriented requirements change management method to manage requirements change with value analysis and feature-oriented traceability links including intermediate catalysis using features. Our approach offers two contributions to the study of requirements change: (1) We define requirements change tree to make user requirements change request generalize by feature level. (2) We provide overall process such as change request normalization, change impact analysis, solution dealing with change request, change request implementation, change request evaluation. In addition, we especially present the results of a case study which is carried out in asset management portal system in details.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.21 no.2
• /
• pp.67-74
• /
• 2001

A field experiment was carried out to determine the effects of chemical/mechanical treatments at mowing on the field drying rate and hay quality of alfalfa(Medicago sativa L., cv. Vernal) and spring oats(Avena satvia L., cv. Swan). The chemical drying agent of 2% $K_2CO_3$, mechanical mower conditioning, and no treatment(control) were treated for hastening hay-making in the spring of 1997. The forages were harvested at early bloom stage in alfalfa and heading stage in oats. After field dry, square bales were made by hay baler, and the dry matter(DM) loss, visual estimation and nutritive value of hay were evaluated after storing two months. The field drying rates of alfalfa and oats were high at mechanical treatment, but the drying effectiveness of chemical agents alone was very low. With mower conditioning, the duration of field dry was shortened by 1 day compared with control. therefore, mower conditioning enhance the field drying rate of alfalfa and oats. The DM loss of alfalfa and oats hay was reduced by mechanical treatment, but the efficiency by chemical alone was low. The visual score(leafiness, green color, odor and softness) of hay at mechanical treatment was slightly higher than that of chemical and control. The nutritive value(ADF, NDF, in vitro digestibility, and relative feed value) of hay was also high with treatment of mechanical, but those of chemical alone were similar compared with control. The nutritive value of hay after two months in both alfalfa and oats was decreased when compared with at harvest.

• Journal of Korean Society for Quality Management
• /
• v.40 no.3
• /
• pp.372-380
• /
• 2012

Purpose: The purpose of this research is to develop the methods for evaluating the business value of a company's technical portfolios. In this study, technical portfolios of 10 major manufacturers and e-Biz industries are examined first from a business model perspective. Subsequently, we suggest future direction of R&D for the pharmaceutical industry by deducing the leading industries sharing similar traits with the pharmaceutical industry. Methods: In order to evaluate and analyze the patents of the major leading industries based on the constituents of a business model, the target patents were selected through the following procedure. Results: First, In this study, using the data obtained from the patent analysis, the differences in the technology portfolios of specific business entities based on the constituents of their business models. Second, deduced business rules of particular business entities through classification analysis and role-model of pharmaceutical industry Conclusion: If enterprise discovers technological change and characters of other enterprise or technology, enterprise could judge a direction of technology which will be developed in the near term and a plan which utilized existing technology to increase enterprise's profits.

• The Journal of the Korea Contents Association
• /
• v.22 no.3
• /
• pp.442-452
• /
• 2022

This study was conducted to understand research trends of HR Analytics (HRA) in Korea and to suggest future research directions. First, a comparative analysis was conducted by classifying six areas of recruitment on-board, work environment, performance evaluation, retention, and exit/retirement building on the employee life cycle framework. The results indicate that first, the distribution of detailed research topics in Korean HRA research has similar to that of international research. Second, Korean HRA studies related to employee training and development function are insufficient. Third, the scope and the method of machine learning are becoming enriched. Finally Korean HRA studies are still in the technical domain and toward entering the predictive analysis domain.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.29 no.7
• /
• pp.802-811
• /
• 2023

Marine spatial planning (MSP) is a crucial element for rational allocation and sustainable use of marine areas. Particularly, Fishing Activity Protected Areas constitute essential zones accounting for 45.6% designated for sustainable fishing activities. However, the current assessment of these zones does not adequately consider future demands and potential values, necessitating appropriate evaluation methods and predictive tools for long-term planning. In this study, we selected key fish species (Scomber japonicus, Trichiurus lepturus, Engraulis japonicus, and Larimichthys polyactis) within the Fishing Activity Protected Area to predict their distribution and compare it with the current designated zones for evaluating the ability of the prediction tool. Employing the Intergovernmental Panel on Climate Change (IPCC) 6th Assessment Report scenarios (SSP1-2.6 and SSP5-8.5), we used species distribution models (such as MaxEnt) to assess the movement and distribution changes of these species owing to future variations. The results indicated a 30-50% increase in the distribution area of S. japonicus, T. lepturus, and L. polyactis, whereas the distribution area of E. japonicus decreased by approximately 6-11%. Based on these results, a species richness map for the four key species was created. Within the marine spatial planning boundaries, the overlap between areas rated "high" in species richness and the Fishing Activity Protected Area was approximately 15%, increasing to 21% under the RCP 2.6 scenario and 34% under the RCP 8.5 scenario. These findings can serve as scientific evidence for future evaluations of use zones or changes in reserve areas. The current and predicted distributions of species owing to climate change can address the limitations of current use zone evaluations and contribute to the development of plans for sustainable and beneficial use of marine resources.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.19 no.2
• /
• pp.1-11
• /
• 2024

In the midst of the current turbulent global economy, traditional investment metrics are undergoing a metamorphosis, signaling the onset of what's often referred to as an "Investment cold season". Early-stage startups, despite their boundless potential, grapple with immediate revenue constraints, intensifying their pursuit of critical investments. While financial indicators once took center stage in investment evaluations, a notable paradigm shift is underway. Organizational culture, once relegated to the sidelines, has now emerged as a linchpin in forecasting a startup's resilience and enduring trajectory. Our comprehensive research, integrating insights from CVF and OCAI, unveils the intricate relationship between organizational culture and its magnetic appeal to investors. The results indicate that startups with a pronounced external focus, expertly balanced with flexibility and stability, hold particular allure for investment consideration. Furthermore, the study underscores the pivotal role of adhocracy and market-driven mindsets in shaping investment desirability. A significant observation emerges from the study: startups, whether they secured investment or failed to do so, consistently display strong clan culture, highlighting the widespread importance of nurturing a positive employee environment. Leadership deeply anchored in market culture, combined with an unwavering commitment to innovation and harmonious organizational practices, emerges as a potent recipe for attracting investor attention. Our model, with an impressive 88.3% predictive accuracy, serves as a guiding light for startups and astute investors, illuminating the intricate interplay of culture and investment success in today's economic landscape.

• Journal of Digital Convergence
• /
• v.16 no.11
• /
• pp.441-446
• /
• 2018

The purpose of this study is to investigate the digital media strategies for small business branding. To understand the effective strategies for promoting small business through digital content marketing, we conducted in-depth interview with small business managers. The results of in-depth interview revealed that it is critical for small businesses to start creating and including video marketing as part of their entire content strategy. Especially, small business managers considered that video that provides rich media content can boost consumer engagement and increase the time spent on a branded contents. From a managerial perspective, this study provides guide on what small businesses should consider when developing and implementing digital strategies. For future research, this study provides the guide to investigate the effects of digital contents on the brand equity of small business.