• 대한치과보철학회지
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• 제59권4호
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• pp.431-441
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• 2021

심하게 마모된 치아를 가진 환자에서 수직교합고경 거상을 동반한 전악 보철수복이 계획 될 수 있다. 하지만 치아가 심하게 마모되더라도 치조돌기가 보상 성장하여 환자의 수직 고경은 변하지 않을 수 있다. 이런 경우 수복 공간 확보를 위해서 수직고경을 변화시켜야 한다면 심미적이고 기능적인 목표를 만족하는 최소한의 수직교합고경 거상을 선택해야 한다. 본 증례에서 환자는 전반적인 치아 마모로 저작 시 어려움을 호소하였고, 마모가 심한 하악 전치부의 심미적 개선을 원하였다. 수직고경 감소의 평가 및 적절한 수직고경 결정을 위해 안모계측, 임상적 치관 길이 평가, 교합안정공극 측정, 측방 두부계측방사선사진 분석 등을 시행하였고, 체계적인 진단과 평가를 거쳐 보철 수복 공간 확보를 위해 최소한의 수직고경 거상을 동반한 전악 구강회복술을 시행하였다. 중심위에서 안정적인 교합 접촉 및 조화로운 전방, 측방 유도 부여를 통해 환자의 기능적, 심미적 문제를 해결할 수 있었다.

• 구강회복응용과학지
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• 제17권4호
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• pp.231-244
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• 2001

This study was conducted to observe the effect on appendage muscle strength according to increase in occlusal vertical dimension. For this study, ten males with a mean age of 21 were selected. The subjects had a complete or almost complete set of natural teeth and reported no subjected symptoms of pain or dysfunction in the masticatory system. The tested occlusal splints were made at the position of increased occlusal vertical dimension of 2mm, 3.5mm, and 5mm from the ICP. Before and after wearing occlusal splints, the appendage muscle strength were tested by CybexII Dynamometer in each subject. The results were as follows : 1. When occlusal vertical dimension was increased, most of mean muscular strength values were increased except for those of supination and pronation of forearm at the position of 5mm increased occlusal vertical dimension. 2. The statistical analyses demonstrated that the increased occlusal vertical dimension position to be significantly stronger than intercuspal position for the muscle strength of the flexion and extension of hip, supination of forearm, external and internal rotation of knee, dorsiflexion and plantarflexion of ankle (p<0.05). 3. At the position of 3.5mm increased vertical dimension displayed the highest mean muscluar strength value than other positions. 4. Statistically demonstrated values, except for supination of forearm, internal rotation of shoulder, were related to lower appendage. Therefore splint was more effective on lower appendage than upper appendage to make muscle strength increased. 5. The mean increased rate of muscular strength tested on knee(57%), ankle(42%), and wrist(20%) were higher than hip(31%), elbow(14%), and shoulder(17%).

• 대한지역사회영양학회지
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• 제17권3호
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• pp.321-328
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• 2012

The purpose of this study is to investigate how certain factors influence job satisfaction and turnover intention of the dietitians working at the correctional institutions. A total 47 sheets of questionnaires (complete enumeration) were distributed respectively to the dietitians during the period from March 20th to May 18th of 2008. A total of 38 questionnaires (response rate 81%) were analyzed by using SPSS (ver. 19.0). The dietitians were more satisfied with coworkers ($3.63{\pm}0.10$) and supervision ($3.19{\pm}0.13$) than with pay ($2.97{\pm}0.09$) and promotion ($2.55{\pm}0.08$). Among the job burnout dimensions, cynicism ($2.58{\pm}0.09$) was rated higher than exhaustion ($2.47{\pm}0.10$), while professional efficacy level ($3.40{\pm}0.08$) was relatively high. The work dimension of job satisfaction was negatively correlated with exhaustion and cynicism dimensions of job burnout (p < 0.001), and turnover intention (p < 0.01), but positively correlated with professional efficacy dimension (p < 0.001). The co-worker dimension was negatively correlated with exhaustion and cynicism (p < 0.05) and turnover intention (p < 0.01), while the supervision, the pay, and the promotion dimension were not correlated with the job burnout and turnover intention. The turnover intention was positively correlated with exhaustion and cynicism dimensions of job burnout (p < 0.001). A stepwise regression analysis revealed that i) professional efficacy was a factor to significantly increase the work dimension of job satisfaction, ii) exhaustion and cynicism to significantly decrease the work and the co-worker dimension of job satisfaction, respectively, and iii) exhaustion to significantly increase turnover intention. The managerial efforts of the institutions could be focused on the job burnout factors to effectively increase the work dimension and the co-worker dimension of the job satisfaction.

• 대한지역사회영양학회지
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• 제14권2호
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• pp.182-189
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• 2009

The purpose of this study is to investigate how certain factors-especially dietitians' general characteristics and job burnout-influence their job satisfaction and turnover intention. The survey was conducted during the period from September 7th to October 15th of 2006. A total of 91 institutions(response rate 74.6%) was analyzed by using SPSS(windows ver. 14.0). A majority of the respondents were females(97.8%) and 30 years or older(66.0%). Among the job burnout dimensions, exhaustion($2.78{\pm}0.07$) was rated higher than cynicism($2.62{\pm}0.06$), while the professional efficacy level($3.55{\pm}0.05$) was relatively high. The dietitians were more satisfied with co-workers($3.73{\pm}0.07$) and work($3.41{\pm}0.06$) than with pay($2.66{\pm}0.07$) and promotion($2.32{\pm}0.07$). The work dimension of job satisfaction was negatively correlated with exhaustion and cynicism dimensions of job burnout, and turnover intention(p<0.001), but positively correlated with professional efficacy dimension(p<0.001). The supervision dimension was negatively correlated with cynicism(p<0.05) and turnover intention(p<0.001), but positively correlated with professional efficacy dimension(p<0.01). The co-workers dimension was positively correlated with professional efficacy dimension(p<0.01). The pay dimension was negatively correlated with exhaustion(p<0.001) and cynicism(p<0.01) dimensions and turnover intention(p<0.001). The promotion dimension was negatively correlated with cynicism(p<0.01). The turnover intention was positively correlated with exhaustion and cynicism dimensions of job burnout(p<0.001). A hierarchical regression analysis revealed that i) professional efficacy was a factor to significantly increase job satisfaction, ii) cynicism to significantly decrease their job satisfaction, and iii) exhaustion to significantly increase turnover intention.

• 대한전자공학회논문지SP
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• 제40권5호
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• pp.410-416
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• 2003

인접투사 알고리즘(Affine Projection Algorithm: APA)에서 투사 차원은 적응필터 계수갱신에 사용하는 입력 벡터 요소 수이며, 이는 계수갱신을 위해 사용되는 투사 기저의 개수이다. 그리고 투사차원은 적응 필터의 수렴속도와 밀접한 관계가 있으며 알고리즘에서 필요한 계산량을 결정한다. 적응필터가 수렴함에 따라 수렴속도가 감소하게 되므로, 수렴속도를 결정하는 투사차원을 줄일 수 있다. 본 논문에서는 적응필터 계수갱신 시 계수벡터의 변화량을 수렴속도와 연관시켜 인접투사 알고리즘의 투사차원을 조정하는 가변 차원 인접투사 알고리즘(Variable Dimension APA: VDAPA)을 제안한다. 제안한 방법은 적응필터의 수렴정도에 따라 투사 기저 수를 조정함으로써 APA의 계산량을 줄인다. 컴퓨터 모의 실험을 통해 기존의 인접투사 알고리즘 및 NLMS 알고리즘과의 수렴속도, 계산량 면에서 성능을 비교하여 제안한 방법의 우수성을 확인한다.

• 한국수자원학회논문집
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• 제32권3호
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• pp.291-300
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• 1999

하천치수를 고려한 프랙탈 차원의 개념을 실제 강우-유출 모형에 적용시키는 방안으로써 스나이더 합성단위유량 도법을 택하였으며, 5대강 수계의 29개 유역에 대한 지형자료와 관측단위유량도 자료를 이용하여 4가지 형태의 스나이더형 관계식을 유도하였다. 29개 유역에 대한 분석과 2개 유역에 대한 검증 결과 하천길이의 프랙탈적인 성질을 이용하고 기계산된 자료는 기계산된 값을 이용하는 스나이더형 관계식이 가장 좋은 결과를 보여주었다. 하천차수 유역중심에서 출구까지의 하천길이( Lca )중 Lca 는 프랙탈적인 성질이 없고 유역중심의 상류에 해당하는 주하천 구간인 ( Lma - Lca )만이 1.027의 프랙탈 차원을 갖는다는 가정을 하였으며, 이를 이용하여 우리날 수계를 대표 할 수 있으며 작업대상 지형도축척에 의해 발생하는 하천길이의 프랙탈적인 영향을 고려할 수 있는 새로운 스나이더형 공식을 제안하였다.

• 한국어류학회지
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• 제18권3호
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• pp.209-215
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• 2006

한국의 퉁가리과 어류 3종의 형태학적 특성을 classical dimension과 truss dimension을 사용하여 파악하였다. Arc sin square root 전환 후, 18가지의 계측형질을 체장에 대한 비율로, 그리고 3가지의 계측형질은 두장에 대한 비율로 각각 분석하였다. 퉁사리, Liobagrus obesus는 classical dimension과 truss dimension의 4가지 계측 형질이 퉁가리, L. andersoni와 자가사리, L. mediadiposalisa에 비하여 컸다 (P<0.05). 퉁사리와 퉁가리는 truss dimension의 3가지 계측형질이 자가사리보다 컸다 (P<0.05). 조사된 퉁가리과 어류의 6가지 계측형질에서는 유의적인 차이가 없었다. 본 연구에 사용된 dimension들은 한국산 퉁가리과 어류들을 구별할 수 있는 적절한 분류학적 지표로 사용될 수 있으리라 사료된다.

• 복식문화연구
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• 제12권1호
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• pp.59-72
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• 2004

The objectives of this study were to investigate the perceptions of Korean female university students for clothing pattern tendency and structural element of clothing pattern image dimension and to find how individual personality type influence the preferred clothing pattern characteristics. For this study, a questionnaire was designed and sent to 600 female university students of Daejeon, Seoul and metropolitan area. The tool used in this study was MBTI(The Myers-Briggs Type Indicator) Form G Korean version and for the analysis of data SPSS 10.0 package were used. 10 representative patterns for this study were floral, dot, stripe, check, animal, abstract & artistic, geometric, vegetable & leaf, paisely, patchwork pattern. The data were analyzed by factor analysis, arithmetic mean, One-Way ANOVA, x²-test. The major findings were as follows: Clothing pattern image dimension perceived by Korean female university students for 10 representative patterns were basic form, deluxe, specialty, and cultural dimension. Among them, basic form and deluxe dimension were major dimensions. In basic form dimension, dot pattern score was high indicating female students perceive it as light, comfortable, clean, cool and simple pattern image. In deluxe dimension, floral pattern scored high and in specialty dimension, abstract and artistic pattern scored high among other pattern image. In cultural dimension, geometric pattern and check pattern scored high. Based on other detailed analysis results, It is concluded that the personality type greatly influence clothing pattern evaluation. For example, in case of color combination of patchwork pattern, there was a difference in color preference depend on a personality type such as sensing(S) or intuition(N). Therefore, sensing personality type preferred adjacent color combination than contrast color combination. Detailed marketing strategy is necessary in planning textile design of merchandise plan.

• Korean Journal of Mathematics
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• 제32권1호
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• pp.43-57
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• 2024

Given a domain X and a collection H of functions h : X → {0, 1}, the Vapnik-Chervonenkis (VC) dimension of H measures its complexity in an appropriate sense. In particular, the fundamental theorem of statistical learning says that a hypothesis class with finite VC-dimension is PAC learnable. Recent work by Fitzpatrick, Wyman, the fourth and seventh named authors studied the VC-dimension of a natural family of functions ℋ'²_t(E) : 𝔽²_q → {0, 1}, corresponding to indicator functions of circles centered at points in a subset E ⊆ 𝔽²_q. They showed that when |E| is large enough, the VC-dimension of ℋ'²_t(E) is the same as in the case that E = 𝔽²_q. We study a related hypothesis class, ℋ^d_t(E), corresponding to intersections of spheres in 𝔽^d_q, and ask how large E ⊆ 𝔽^d_q needs to be to ensure the maximum possible VC-dimension. We resolve this problem in all dimensions, proving that whenever |E| ≥ C_dq^d-1/(d-1) for d ≥ 3, the VC-dimension of ℋ^d_t(E) is as large as possible. We get a slightly stronger result if d = 3: this result holds as long as |E| ≥ C_3q^7/3. Furthermore, when d = 2 the result holds when |E| ≥ C_2q^7/4.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 1999년도 춘계 학술발표대회 논문집
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• pp.60-61
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• 1999

Design appreciation is a once a week 16 week course Primarily it is a series of presentation and discussion about product design, aiming at increasing the awareness of design among students, and stimulating their own work.(omitted)