• 지식경영연구
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• 제7권1호
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• pp.1-12
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• 2006

The previous empirical research suggests that problem finding is more important than problem solving in the creative process. Problem finding is increasingly recognized in theories of creativity. In spite of the importance of problem finding, there is little research to explain problem finding in Korea. This article reviews the research about problem finding and examines the nature of problem finding, the type of problems, the relation of problem finding and problem solving, the relation of problem finding and creativity, and the serendipity. Finally, theoretical and educational implications are discussed.

• 한국군사과학기술학회지
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• 제23권1호
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• pp.52-58
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• 2020

In this paper, a 2-dimensional phase comparison direction finding receiver was designed and fabricated. For 2-D comparison direction finding, direction finding formulas were derived from a uniformly arranged of four antennas. Based on this, a direction finding receiver was designed using Matlab simulink, and the direction finding receiver was fabricated. To analyze the performance of the designed direction finding receiver, the injection direction finding accuracy and simulation results were compared. As a result of the test, the fabricated direction finding receiver showed a maximum of 3° RMS precision, and the result of both tests showed similar trends. Also, it was confirmed that the direction finding accuracy of elevation angle is about 2.7 times better than azimuth angle, and both models performed well within 0.7° RMS at the boresight.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.93.2-93
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• 2002

$\textbullet$ Design of Path-Finding Agents in Game Programming $\textbullet$ Computational Efficiency vs. Realistic Motion $\textbullet$ Path-Finding by Planning $\textbullet$ Path-Finding by Behavior-based Control $\textbullet$ implementation and Test of Path-Finding Program

• ETRI Journal
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• 제42권2호
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• pp.247-257
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• 2020

Spatial experiences in route finding, such as the ability of finding low-traffic routes, exert a significant influence on travel time in big cities; therefore, the spatial experiences of seasoned individuals such as taxi drivers in route finding can be useful for improving route-finding algorithms and preventing using routes having considerable traffic. In this regard, a spatial experience-based route-finding algorithm is introduced through ontology in this paper. To this end, different methods of modeling experiences are investigated. Then, a modeling method is chosen for modeling the experiences of drivers for route finding depending on the advantages of ontology, and an ontology based on the taxi drivers' experiences is proposed. This ontology is employed to create an ontology-based route-finding algorithm. The results are compared with those of Google maps in terms of route length and travel time at peak traffic time. According to the results, although the route lengths of route-finding method based on the ontology of drivers' experiences in three cases (from nine cases) are greater than that based on Google maps, the travel times are shorter in most cases, and in some routes, the difference in travel time reaches only 10 minutes.

• Architectural research
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• 제17권1호
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• pp.31-40
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• 2015

A simple force-finding process based on an optimization technique is proposed for tensegrity structures. For this purpose, the inverse problem of form-finding process is formulated. Therefore, the position vector of nodes and element connectivity information are provided as priori. Several benchmark tests are carried out to demonstrate the performance of the present force-finding process. In particular, the force density distributions of simplex tensegrity are thoroughly investigated with the important parameters such as the radius, height and twisting angle of simplex tensegrity. Finally, the force density distribution of arch tensegrity is produced by using the present force-finding process for a future reference solution.

• 한국초등과학교육학회지:초등과학교육
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• 제25권4호
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• pp.419-429
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• 2006

This study investigated gender differences in the factors affecting elementary school students' ability to identify scientific problems. Scientific problem finding tasks, involving written instruments including IQ tests, content knowledge, science process skills, divergent thinking skills, intrinsic/extrinsic motivation, personality traits, and home environment were administered to 96 elementary school students(male; 50 & female: 46). The data collected was analyzed by means of a t-test, Pearson's correlation, multiple regression analysis, and canonical correlation analysis. The finding indicated that there were significant gender differences in scientific problem finding performance. Female students were significantly higher in both total score and elaborate score of scientific problem finding than male students. Personality traits and intrinsic motivation positively and extrinsic motivation negatively predicted male students' abilities in scientific problem finding. Science process skills, personality traits and intrinsic motivation positively and extrinsic motivation negatively predicted female students' scientific problem finding and IQ positively predicted female students' elaborate score of scientific problem finding.

• 한국군사과학기술학회지
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• 제10권3호
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• pp.129-138
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• 2007

Recently, Direction Finding(DF) System is using switching DF algorithm to reduce system-weight by eliminating RF cable as much as possible. Also, Correlation Vector Direction Finding(CVDF) algorithms is being used for Fast Direction finding in tactical environment. In this paper, I will give you burst error elimination algorithms and compare the performance in case we use switching CVDF algorithm. Although antenna array is not working, we will successfully perform direction finding when we use this burst error elimination algorithms. Also, we will be completely capable of DF mission despite of meeting the unwanted situation that the monitoring signal disappear in case we use Switching Direction Finding algorithms. That situation frequently occurs under the Frequency Hopping signal circumstances.

• 기록학연구
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• 제23호
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• pp.3-43
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• 2010

검색도구는 기록을 찾고 이해할 수 있도록 지원하는 도구이다. 검색도구는 크게 수직형 검색도구와 수평형 검색도구로 구분할 수 있는데, 수직형 검색도구는 우리가 보통 '보존기록 기술(archival description)'이라 부르는, 출처 기반의 계층형 검색도구를 말하며, 수평형 검색도구는 목록이나 색인 등과 같은 주제 기반의 검색도구로서, 주로 수직형 검색도구로 안내해주는 역할을 수행했다. 그러나 이러한 검색도구들은 인터넷 환경에 맞추어 진화하고 있으며, 가령 수직형 검색도구의 경우, ISAD(G), ISAAR(CPF), ISDF와 같은 국제표준기술규칙의 개발에 발맞추어, 출처와 원질서 존중의 원칙을 견지하되 다중 엔티티 구조로 변화해가는 경향을 살펴볼 수 있다. 그러나 이용자 입장에서 기록관리 원칙을 적용한 수직형 검색도구는 어렵고 복잡하며, 구체성과 접근성이 떨어진다는 비판을 받는다. 이러한 문제를 극복하기 위하여 각국에서는 기록에 대한 다양한 접근경로를 제공하는 다양한 디지털 콘텐츠를 개발하여 제공하고 있는데, 이것들이 이른바 새로운 유형의 주제 기반 검색도구라고 볼 수 있다. 이 연구에서는 보존기록을 위한 수직형 검색도구의 변화와 그 한계를 조사하였고, 이를 보완하기 위하여 인터넷 환경에서 새롭게 출현하는 검색도구 및 관련 연구들을 전반적으로 살펴 본 결과 복합화, 통합화, 개방화라는 3가지 경향으로 유형화할 수 있었다. 즉, 주제 해설과 검색도구를 연계시킨 복합적 형태의 검색도구, 여러 기관이 소장한 기록을 한꺼번에 검색할 수 있도록 하는 통합 검색도구, 이용자 참여가 보장되는 개방적 형태의 검색도구는 향후 검색도구의 개발 전망을 보여주는 대표적 유형으로 볼 수 있다. 새로운 검색도구의 출현에 따라 우려되는 문제로는 탈 맥락화, 편견과 객관성 유지, 이용자 참여방식과 질적 통제 등으로 보았다. 앞으로 새로운 흐름을 적극적으로 수용하되 오히려 수직형 검색도구 기반을 지속적으로 강화해 나아가고 이용자를 적극 참여시키는 전략을 개발할 것을 제안하였다. 이 연구가 앞으로 국가기록원을 비롯한 영구기록물 관리기관들이 검색도구 개발 전략을 수립할 때 시사점을 제공할 수 있기를 기대한다.

• Communications for Statistical Applications and Methods
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• 제29권4호
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• pp.421-439
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• 2022

Phase I dose-finding trials are essential in drug development. By finding the maximum tolerated dose (MTD) of a new drug or treatment, a Phase I trial establishes the recommended doses for later-phase testing. The primary toxicity endpoint of interest is often a binary variable, which describes an event of a patient who experiences dose-limiting toxicity. However, there is a growing interest in dose-finding studies regarding non-binary outcomes, defined by either the weighted sum of rates of various toxicity grades or a continuous outcome. Although several novel methods have been proposed in the literature, accessible software is still lacking to implement these methods. This study introduces a newly developed R package, UnifiedDoseFinding, which implements three phase I dose-finding methods with non-binary outcomes (Quasi- and Robust Quasi-CRM designs by Yuan et al. (2007) and Pan et al. (2014), gBOIN design by Mu et al. (2019), and by a method by Ivanova and Kim (2009)). For each of the methods, UnifiedDoseFinding provides corresponding functions that begin with next that determines the dose for the next cohort of patients, select, which selects the MTD defined by the non-binary toxicity endpoint when the trial is completed, and get oc, which obtains the operating characteristics. Three real examples are provided to help practitioners use these methods. The R package UnifiedDoseFinding, which is accessible in R CRAN, provides a user-friendly tool to facilitate the implementation of innovative dose-finding studies with nonbinary outcomes.

• Advances in Computational Design
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• 제2권1호
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• pp.71-87
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• 2017

This study focuses on the efficiency and applicability of dynamic relaxation methods in form-finding of membrane structures. Membrane structures have large deformations that require complex nonlinear analysis. The first step of analysis of these structures is the form-finding process including a geometrically nonlinear analysis. Several numerical methods for form-finding have been introduced such as the dynamic relaxation, force density method, particle spring systems and the updated reference strategy. In the present study, dynamic relaxation method (DRM) is investigated. The dynamic relaxation method is an iterative process that is used for the static equilibrium analysis of geometrically nonlinear problems. Five different examples are used in this paper. To achieve the grading of the different dynamic relaxation methods in form-finding of membrane structures, a performance index is introduced. The results indicate that viscous damping methods show better performance than kinetic damping in finding the shapes of membrane structures.