• The Journal of Korean Association of Computer Education
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• v.10 no.1
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• pp.67-75
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• 2007

The purpose of the study is to develop handheld learning tool based on design principles drawn from cognitive load theory. To optimize learner's cognitive load, the learning program should be developed for maximizing the effective load and(or) minimizing ineffective load. The principles, which were applied to developing the learning program, for minimizing the extraneous cognitive load, one of the ineffective loads, are modality, redundancy, split-attention, multimedia, and worked-out example. In this study, we will show possibilities for designing an effective mobile learning program.

• Journal of Korean Port Research
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• v.7 no.1
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• pp.25-42
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• 1993

지난 20여년간 화물수송 분야에는 큰 변화가 있었다. 수송 공급 측면에서는 보다 다양하고 기술적으로 앞선 수송수단들이 등장했으며, 수송 수요 측면에서는 로지스틱스 개념의 도입으로 화주들의 보다 높은 수송 서비스가 요구 되었다. 수송수단의 수송 분담에 있어서도 특히 철도에서 공로로의 두드러진 화물이동 현상이 나타났다. 이러한 변화는 수송 현안 해결에 대한 관심을 높이고 화물수송수요 예측기법의 이론적, 개념적인 발달을 가져왔다. 그 중 두드러진 발달은 화주의 행태를 반영하는 행태모형의 개발과 새로운 자료수집 방법 및 자료형태이다. 전통적으로 화물수송 및 교통 연구에 널리 사용된 행태모형은 확률표본을 사용하여 왔으나, 80년대 부터 비확률 표본 사용에 관심이 높아졌다. 그 대표적인 것으로 기반근거 데이터를 들 수 있다. 이 데이터는 제한된 정보를 제공한다는 자료자체의 한계를 지니고 있으나, 자료수집이 용이하고 비용이 저렴하다는 장점을 가지고 있다. 화물수송 분야에서 선택기반 데이터를 이용한 연구는 현재까지 두 편이 발표 되어 있다. 따라서 볼 연구는 선택기반 데이터를 이용한 개별선택모형의 잠재력을 검증하는 것을 그 목적으로 하고, 네 종류의 제조품 그룹을 대상으로 기반근거 데이터를 수집하여 로짓모형을 추정하였으며, 추정결과를 이전 연구들의 결과와 비교하여 그 타당성을 검토 하였다. 추정된 결과는 통계적으로 유의하며 직관적으로 타당한 것으로 나타난다. 또한 그 결과는 문헌의 결과와도 일치하였다. 수송계획에 있어서 자료수집비용 절감의 필요성을 생각할 때 이것은 중요한 의미를 지닌다.

• Journal of Korea Multimedia Society
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• v.4 no.3
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• pp.280-285
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• 2001

Since KBANN (knowledge-based artificial neural network) combing the inductive learning algorithm and the analytical learning algorithm was proposed, several methods such as TopGen, TR-KBANN, THRE-KBANN which modify KBANN have been proposed. But these methods can be applied when there is a domain theory. The algorithm representing the problem into KBANN based on only the instances without domain theory is proposed in this paper. Domain theory represented into KBANN can be refined by THRE-KBANN. The performance of this algorithm is more efficient than the C4.5 in the experiment for some problem domains of inductive learning.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.133-136
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• 2000

자바에서 또한 이러한 병행성 프로그램을 지원하기 위한 다양한 언어적 지원과 병행적인 요건을 지원하고 있다. Thread class지원, Synchronized 예약어, 상호협동 관계를 표현하기위한 wait(), notify(), notifyAll() 메서드 , monitor 메커니즘등을 지원하고 있다. 하지만 이는 아주 저 수준의 지원형태이며 여러 가지 문제점을 야기할 수 있다. 이에 대해 병행적 이론의 정수라고 할 수 있는 pi-calculus의 이론과 기법을 도입하여 새로운 시각으로 병행성 프로그래밍에 대한 접근을 하고자 한다. 여기에 실용적으로 많이 사용되고 발전되어온 자바에서 적용하고자 한다. pi-calculus에 기반한 pict를 모델로 하여 pict에서 지원하는 아주 명료한 연산자와 current object를 도입함으로써 보다 표현력과 확장성, 검증성이 뛰어난 고 수준 자바 라이브러리를 설계하고자 한다.

• Review of Culture and Economy
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• v.21 no.2
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• pp.89-109
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• 2018

This paper aims to offer a conceptual framework in the context of culture-driven city branding through strategic design from a cross-disciplinary approach. The key findings identified the followings: Firstly, the phenomenon of culture-driven city brand creation and the use of design value of primary attractions. Secondly, the impact of the design contents of new media in supporting city brand creation. Lastly, the importance of image/text relationships through applying coding theory to enhance city brand communications.

• Journal of Technology Innovation
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• v.26 no.3
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• pp.98-128
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• 2018

This study aimed to investigate the performance on technology collaboration of small and medium enterprises in Korea from the views of resource-based theory. Considering that supplementing the technical resources is stressed in a motivation of technology collaboration from the corresponding theoretical perspective, a group of corporations to be analyzed was classified into three categories such as high, medium and low technologies depending on the technology level. Moreover, technology collaboration partners were also classified into large corporation, small and medium enterprises, university and institution based on that both tangible and intangible assets that belong to a corporation semi-permanently, and the revolutionary performance was analyzed by each relationship of collaboration between parties. The study results revealed that an influence on the performance of technology collaboration varies by technology level of the small and medium enterprises in Korea and their collaboration partners. In particular, the small and medium enterprises of high-tech industry in Korea were confirmed to accomplish relatively less benefits obtaining through technology collaboration compared to the corporations with low technical skills.

• Korean Security Journal
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• no.36
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• pp.177-200
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• 2013

As we enter a high industrial society that widens the gap between the rich and poor, demand for the security services has grown explosively. With the growth in quantitative expansion of security services, people have also placed increased requirements on more sophisticated and diversified security services. Consequently, market outlook for private security services industry is positive. However, Korea's private security services companies are experiencing difficulties in finding a direction to capture this new market opportunity due to their small sizes and lack of management-strategic thinking skills. Therefore, we intend to offer a direction of development for our private security services industry using a management-strategy theory and the Analytic Hierarchy Process(AHP), a structured decision-making method. A resource-based theory is one of the important management strategy theories. It explains that a company's overall performance is primarily determined by its competitive resources. Using this theory, we could analyze a company's unique resources and core competencies and set a strategic direction for the company accordingly. The usefulness and validity of this theory has been demonstrated as it has often been subject to empirical verification since 1990s. Based on this theory, we outlined a set of basic procedures to establish a management strategy for the private security services companies. We also used the AHP method to identify competitive resources, core competencies, and strategies from private security services companies in contrast with public companies. The AHP method is a technique that can be used in the decision making process by quantifying experts' knowledge and unstructured problems. This is a verified method that has been used in the management decision making in the corporate environment as well as for the various academic studies. In order to perform this method, we gathered data from 11 experts from academic, industrial, and research sectors and drew distinctive resources, competencies, and strategic direction for private security services companies vis-a-vis public organizations. Through this process, we came to the conclusion that private security services companies generally have intangible resources as their distinctive resources compared with public organization. Among those intangible resources, relational resources, customer information, and technologies were analyzed as important. In contrast, tangible resources such as equipment, funds, distribution channels are found to be relatively scarce. We also found the competencies in sales and marketing and new product development as core competencies. We chose a concentration strategy focusing on a particular market segment as a strategic direction considering these resources and competencies of private security services companies. A concentration strategy is the right fit for smaller companies as a strategy to allow them to focus all of their efforts on target customers in a single segment. Thus, private security services companies would face the important tasks such as developing a new market and appropriate products for such market segment and continuing marketing activities to manage their customers. Additionally, continuous recruitment is required to facilitate the effective use of human resources in order to strengthen their marketing competency in a long term.

• Journal of KIISE
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• v.42 no.3
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• pp.320-327
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• 2015

Although service robots in various fields are being commercialized, most of them have problems that depend on explicit commands by users and have difficulty to generate robust reactions of the robot in the unstable condition using insufficient sensor data. To solve these problems, we modeled mirror neuron and theory of mind systems, and applied them to a robot agent to show the usefulness. In order to implement quick and intuitive response of the mirror neuron, the proposed intention-response model utilized behavior selection networks considering external stimuli and a goal, and in order to perform reactions based on the long-term action plan of theory of mind system, we planned behaviors of the sub-goal unit using a hierarchical task network planning, and controled behavior selection network modules. Experiments with various scenarios revealed that appropriate reactions were generated according to external stimuli.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.447-448
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• 2017

본 연구는 무용수들이 접촉즉흥을 매끄럽고 섬세하게 수행하기 위해 라반의 에포트(flow effort)와 자기인지(Self Awareness)를 기반으로 한 접촉즉흥 훈련 프로그램을 이론적으로 설계하려는데 그 목적이 있다. 이를 위해 접촉즉흥에 대해 알아보고 전문가 그룹의 토의롤 통해 에포트 이론 중 접촉 즉흥에 적절한 상태를 선정하였고 그 중 공통적으로 포함된 에포트 흐름(flow)을 무용수 스스로 인지할 수 있도록 프로그램 설계를 진행하였다. 전후체험 후 차이비교와 체험공유 및 토론으로 총 90분으로 구성된 이 프로그램은 라반의 흐름 에포트를 포함하는 상태와 언어자각안내를 통합한 것으로 무용수의 정신적인 몰입도, 무게에 대한 인지과 흐름의 향상이 예상된다. 본 연구에서 설계한 프로그램은 추후 현장에서 실험연구로 진행되어야 할 것이다.

• Journal of Internet Computing and Services
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• v.10 no.3
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• pp.85-94
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• 2009

In this work we propose an energy-efficient transmission strategy for wireless sensor networks that operate in a strict energy-constrained environment. Our transmission algorithm consists of two components: a binary-decision based transmission and a channel-aware backoff adjustment. In the binary-decision based transmission, we obtain the optimum threshold for successful transmission via Markov decision process (MDP) formulation. A channel-aware backoff adjustment, the second component of our proposal, is introduced to favor sensor nodes seeing better channel in terms of transmission priority. Extensive simulations are performed to verify the performance of our proposal over fading wireless channels.