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박해연,이준기,이상구,임성일 한국경영과학회 2005 Management Science and Financial Engineering Vol.11 No.3
Despite the fact that the sourcing process in B2B e-Marketplaces is one of the most important tasks, the evaluation and selection process of suppliers have been ad-hoc based and mainly dependent on the experience of sourcing managers subjective knowledge. To remedy the problem, we developed a decision support System (called Wise-I) that helps sourcing managers evaluate suppliers in a more systematic way. The system reflects companys strategy and know-how by adopting company enforced weighted scores for different factors and employing a more scientific method of considering factors other than price and on-time delivery rate, utilizing the AHP method. This paper reports the effectiveness of the system as well as the detailed description of the system. To investigate the effectiveness of the system, we collected information through interview and questionnaire survey. The information was also augmented through the firm key index system, which monitors average delivery lead time and on-time delivery rate. The result indicates that the system leads to the efficiency of purchasing section and the transparency of buying process, therefore reduces delivery time and cost.
Isoparametric Curve of Quadratic F-Bézier Curve
박해연,안영준 조선대학교 기초과학연구원 2013 조선자연과학논문집 Vol.6 No.1
In this thesis, we consider isoparametric curves of quadratic F-Bézier curves. F-Bézier curves unify C-Bézier curves whose basis is {sint, cost, t, 1 }and H-Bézier curves whose basis is {sinht, cosht, t, 1}. Thus F-Bézier curves are more useful in Geometric Modeling or CAGD(Computer Aided Geometric Design). We derive the relation between the quadratic F-Bézier curves and the quadratic rational Bézier curves. We also obtain the geometric properties of isoparametric curve of the quadratic F-Bézier curves at both end points and prove the continuity of the isoparametric curve.
한국어 억양 발음 교육 : 한ㆍ중 의문문 억양 곡선 비교를 중심으로
박해연 서울대학교 2007 先淸語文 Vol.35 No.-
As is often the case, Korean learner's speaking is not regarded as appropriate one without any specific error. The more the learners spend the time for learning, the less they make errors in pronouncing segmental phonemes. With the stress or intonation, though, even the advanced learners make quite a few fixed mistakes, and the same goes for Chinese speaking learners. For the learners to be fluent in Korean language, it is required to learn to understand various phonological rules and suprasegmental phonemes such as stress or intonation as well as to pronounce individual syllabic, consonants and vowels correctly. Accordingly in this study, with the methods of linguistic/tonetic contrastive analysis and objective, scientific experiment, the teaching method is presented for Korean pronunciation, especially for interrogative intonation based on the analysis result of Chinese speakers' Korean pronunciation.
바디롤러 운동과 요가의 복합처치가 중년여성 요통환자의 체력, 척추 변인 및 통증자각도에 미치는 영향
박해연,김진홍,강설중,김병로 대한운동학회 2015 아시아 운동학 학술지 Vol.17 No.4
[PURPOSE] The purpose of this study was to investigate the effect of combined intervention of body roller exercise and yoga on physical fitness, variables relate vertebral column of middle aged women with chronic lower back pain. [METHODS] Forteen middle-aged women with chronic low back pain were divided into one of two groups, i.e., exercise group (n=7, age 59.0±7.4 years) and control group (n=7, age 53.1±8.5 years). Subjects in exercise group went through body roller exercise and Yoga for 40 min and 20 min per session, respectively. Yoga exercise was Trikonasana; Adho Mukha Svanasana; Bhujangasana; Supta Padangusthasana1, 2, 3; Eka Padaanda Rajakapotasana. The physical fitness, Cobb's angle, lumbar spine rotation, tilt shoulders, pelvis horizontal degrees, visual analogue scale (VAS) were measured and compared between pre- and post test. [RESULTS] Muscular endurance was significantly higher after the intervention compared in the exercise group. Lumbar spine rotation length, shoulder slope, VAS were significantly decreased after the intervention in exercise group. However, no significant interactions were observed in flexibility, Cobb's angle, and pelvis height. [CONCLUSIONS] Body rollers exercise and Yoga intervention improved positively in muscular endurance, spine rotation angle, tilt shoulders, and the VAS Index. In conclusion, data suggest that body rollers exercise and Yoga may be an effective intervention for patients with low back pain.
휴머노이드의 관측기 기반 피드백 제어를 위한 안정성 평가 기준
박해연,김정훈,백주훈 제어로봇시스템학회 2021 제어로봇시스템학회 국내학술대회 논문집 Vol.2021 No.6
This paper proposes a norm-based stability criterion for observer-based trajectory tracking control of humanoids on their linear inverted pendulum model. We introduce a maximal output admissible (MOA) set of the estimated initial center of mass (CoM) values satisfying the proposed stability criterion. Even though obtaining the MOA set intrinsically involves an infinite number of quadratic inequalities, this paper develops a method for computing the MOA set through only a finite computation load. The effectiveness and validity of the proposed computation method are demonstrated by a simulation result.
한국어 말하기 교수·학습에서 학습자-학습자 간 언어 상호작용 연구 - 중국 대학교 학습자를 대상으로
박해연 서울대학교 국어교육연구소 2008 국어교육연구 Vol.21 No.-
The revitalizing interactions in target language is the ultimate goal of language teaching and learning as well as a desirable method for achieving the goal. In teaching aspect, it will be helpful for the effective education by enhancing learning effects to research the input from instructers, the speech produced by learners, and the types of interaction and strategies between teacher and learner or between learners for the purpose of applying to actual teaching. Therefore, I analyze verbal interaction between learners during actual task activities of Korean speaking class in China. With the analyzed result, I propose the method of applying the strategies for promoting verbal interaction to practical speaking instruction. 외국어 교육에서 목표 언어에 의한 상호작용의 활성화는 교수·학습의 활동 목표이자 동시에 그 목표를 달성하기 위한 바람직한 방법이다. 교실에서 이루어지고 있는 교사와 학습자 간, 특히 학습자들 간의 상호작용적 측면을 고려하지 않고서는 언어 수업에 대한 충분한 이해와 효과를 기대하기 어렵다. 교수적인 측면에서 교사의 입력, 학습자측면에서 학생의 발화 산출, 그리고 교사와 학습자, 학습자 간의 상호작용 유형과 전략들을 연구하여 교육의 현장에 적용시킨다면 학습의 효과성을 높여 보다 효율적인 교육을 시키는데 도움이 될 것이다. 따라서 본 연구자는 중국의 한국어 말하기 수업에서의 실 상황 과제 활동을 중심으로 학습자 간의 언어 상호작용을 분석하여 학습자 간의 언어 상호작용을 활성화시킬 수 있는 전략 즉 이해를 활성화시키고 발화 산출을 촉진하며 상호작용을 지속시킬 수 있는 전략으로 범주화하였고 이 전략들을 말하기 교수·학습에 적용할 수 있는 방법에 대해 모색해 보았다.