• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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• pp.1512-1515
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• 1997

One of the advantages of master-slave teleoperation is scaling concept such as position scaling, force scaling Meanuhile, lots of quantization effects are generated from position and force sensors in the master and slave manipulator. In this paper, to show the output error caused by the quantizaion effects from the position sensor and position scaling factor, simulation is done for free motion without contact in slave side. Transfer functiion model in which the quantization effect is assumed to be a disturbance input to the system is derived. Model shows that Jacobian, scaling factors, and controller affect the output by quantization effects form esnsors. One dof master and slave are used for simulation. In our study, the higher sensor resolution decreases the output error form quantization. Scaling factors can amplify the quantizatiion effects form the sensors in master and slave manipulators.

• 천문학논총
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• 제7권1호
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• pp.51-61
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• 1992

The nonlinear stochastic behavior of chaotic inflation is characterized by the 'scaling' effect. Using a simple criterion for the appearance of scaling behavior in the ${\lambda}{\phi}^4$ inflation model, we show explicitly that in this limit the onset of the scaling regime does not require any special initial conditions and that it is independent of the self-coupling constant ${\lambda}$. Non-Gaussian statistics in adiabatic fluctuations are important only for super-horizon scales and the scaling regime does not lead to any significant statistical properties on currently observable scales. However, the scaling effect gives some cosmological consequences very different from what we expect in the naive diffusion approximation for quantum fluctuations. The classical (deterministic) treatment of the inflation field (essentially a quantum mechanical object.) becomes valid towards the end of inflation.

• JSTS:Journal of Semiconductor Technology and Science
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• 제8권1호
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• pp.92-97
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• 2008

In this Paper, we present a scaling theory for dual material surrounding gate (DMSGTs) MOSFETs, which gives a guidance for the device design and maintaining a precise subthreshold factor for given device parameters. By studying the subthreshold conducting phenomenon of DMSGTs, the effective conductive path effect (ECPE) is employed to acquire the natural length to guide the design. With ECPE, the minimum channel potential is used to monitor the subthreshold behavior. The effect of ECPE on scaling factor significantly improves the subthreshold swing compared to conventional scaling rule. This proposed model offers the basic designing guidance for dual material surrounding gate MOSFETs.

• 한국정보통신학회논문지
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• 제16권10호
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• pp.2267-2272
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• 2012

본 연구에서는 이중게이트 MOSFET에서 스켈링 이론에 대한 문턱전압이하 스윙을 분석하였다. 포아송방정식의 해석학적 전위분포를 구하기 위하여 가우스 전하분포를 이용하였다. 문턱전압이하 스윙의 저하와 같은 단채널 효과를 분석하기 위하여 스켈링이론이 사용되었으며 이중게이트 MOSFET의 특성상 두 개의 게이트 효과를 포함하기 위하여 일반적인 스켈링 이론을 수정하였다. 게이트길이에 대한 스켈링인자가 일반적인 스켈링인자의 1/2일 때 문턱전압이하 스윙의 저하현상이 매우 빠르게 감소하였으며 가우스함수의 이온주입범위 및 분포편차도 문턱전압이하 스윙에 영향을 미치는 것을 알았다.

• 한국도로학회논문집
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• 제16권6호
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• pp.27-37
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• 2014

PURPOSES : The purpose of this study is to verify the causes of surface scaling at L-shoulder concrete structure. METHODS : From the literature reviews, mechanisms of frost damage were studied and material properties including strength, air void, spacing factor and scaling resistance of L-shoulder concrete structure were analyzed using core specimens taken by real fields. RESULTS : The spacing factor of air void has relatively high correlation of surface conditions : lower spacing factor at good surfacing condition and vice versa. If the compressive strength is high, even thought spacing factor does not reach the threshold value of reasonable durability, the surface scaling resistance shows higher value. Based on these test results, the compressive strength also provide positive effect on the surface scaling resistance. CONCLUSIONS : The main causes of surface scaling of L-shoulder could be summarized as unsuitable aid void amount and poor quality of air void structure. Secondly, although the compressive strength is not the governing factor of durability, but it shows the positive effect on the surface scaling resistance.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제6권1호
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• pp.91-107
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• 2002

This paper presents two new self-scaling variable-metric algorithms. The first is based on a known two-parameter family of rank-two updating formulae, the second employs an initial scaling of the estimated inverse Hessian which modifies the first self-scaling algorithm. The algorithms are compared with similar published algorithms, notably those due to Oren, Shanno and Phua, Biggs and with BFGS (the best known quasi-Newton method). The best of these new and published algorithms are also modified to employ inexact line searches with marginal effect. The new algorithms are superior, especially as the problem dimension increases.

• 한국치위생학회지
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• 제1권1호
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• pp.63-76
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• 2001

This study was designed to evaluate the effects of music on dental pain and anxiety during ultrasonic scaling. One hundred and twenty five patients visited dental unit of Soonchunhyang University Chunan hospital for scaling were enrolled during August 1999 and February 2000. The patients were allocated randomly into two groups. music (n = 61) and control groups (n = 65). The music group patients listened to self-selected music using an earphone during scaling. Standardized questionnaire were used to assess the subjective denial pain and anxiety before and after scaling in both groups. In music group, more information on music effect was collected. To evaluate changes of physical signs by scaling, blood pressure and pulse were checked by a wrist check oscillometric. The results were as follows: 1. No significant difference in dental pain and anxiety between before and after scaling was observed in music group. However, the music group patients were satisfied with music because of reduction of pain(93.5%) and anxiety(93.4%), 96.7% of music subjects wanted to listen to music in next scaling. 2. While no significant difference in systolic blood pressure before scaling between music and control groups, systolic blood pressure of control group during scaling was significantly higher than that of music group(P<0.05). 3. In multiple logistic regression. the odds ratio(OR) of pain was decreased with age and female patients had higher OR (1.7, p>0.05). Patients with previous scaling experience complained of more dental pain during scaling than patients without experience. Music was not a significant predictor of denial pain during scaling, controlling for possible confounders. 4. While age. music. and scaling experience were not related to dental anxiety during scaling, sex and dental hygiene index were significant predictors of dental anxiety in multiple logistic regression. 5. Both during and after scaling. mean blood pressure of music patients were significantly lower than control patients after controlling for age, sex, and BMI. In conclusion, our data demonstrated that although listening to music did not disappear the dental pain and anxiety. but reduced the intensity of pain and anxiety during scaling. Furthermore, our data imply thai music has a effect of reduction of increasing blood pressure by scaling.

• 한국치위생학회지
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• 제17권6호
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• pp.1207-1214
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• 2017

Objectives: This study aims to investigate degree of scaling fear (Fear when scaling: FWS, Fear from dental hygienist unbelief: FFDHU, and Fear after scaling: FAS) in college students. Methods: 113 students were recruited for the study in Daegu Health College between March and June of 2017. Frequency table of general characteristics was generated, and then the t-test and ANOVA (scheffes's post hoct) were used to analyze the differences between scaling fear and two or three groups of variables. Results: Mean scores of scaling fear in 113 students were 2.24 (FWS), 1.76 (FFDHU), and 1.76 (FAS). Score 2.48 of female's scaling fear (FWS) was significantly higher than men's 2.02 (p<0.05). Smokers who have smoked less than 3 years (2.56) (FWS) were lower than those who have smoked over 3 years (1.55) (p<0.01). Score of students want the explanation of scaling when scaling (1.94) (FWS) were significantly higher than those who does not (1.59) (p<0.05). Conclusions: The findings of this study showed that there were gender and smoking periods when scaling to effect a score of scaling fear.

• 한국정보통신학회논문지
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• 제16권7호
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• pp.1463-1469
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• 2012

본 연구에서는 문턱전압이하 영역에서 이중게이트 MOSFET에서 스켈링 이론이 단채널효과에 미치는 영향을 관찰하였다. 기존 MOSFET의 경우 출력특성을 일정하게 유지하기 위하여 스켈링 이론을 적용하여 전류 및 스위칭 주파수를 해석하였다. 이중게이트 MOSFET에서 단채널효과에 대한 스켈링 이론의 적용 결과를 분석하기 위하여 문턱전압, 드레인유기장벽감소 및 문턱전압이하 스윙 등을 스켈링 인자에 따라 관찰하였다. 이를 위하여 이미 검증된 포아송방정식의 해석학적 전위분포를 이용하였다. 분석결과 단채널효과 중 문턱전압이 스켈링 인자에 가장 큰 영향을 받는다는 것을 관찰하였다. 특히 채널길이에 스켈링 이론을 적용할 때 가중치를 이용한 변형된 스켈링 이론을 적용함으로써 이중게이트 MOSFET에 가장 타당한 스켈링 이론에 대하여 설명하였다.

• 한국치위생학회지
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• 제19권5호
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• pp.765-776
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• 2019

Objectives: The purpose of this study was to compare the oral health statuses pre- and post-insurance using the $5^{th}$ and $6^{th}$ National Health and Nutrition Examination Survey data to confirm the effect of scaling insurance after a year. Methods: Data were analyzed using IBM SPSS ver. 21.0 (IBM Co., Armonk, NY, USA). The four years were integrated, and a composite sample analysis was performed. A total of 26,990 people were included in the study before applying for scaling insurance (14,343 persons) or after receiving scaling insurance (12,647 persons). A chi-squared test was performed to compare the demographic characteristics and oral health status of the subjects. The significance level of the statistical test was 0.05. Results: The proportion of patients without implants was high before the provision of scaling insurance once a year, however, the proportion of patients with one or more implants was high (p<0.05) after the provision of scaling insurance once a year. Hemorrhagic periodontal tissues and tartar formation in periodontal tissues were highly prevalent before the provision of scaling insurance once a year, however, healthy periodontal tissues and formation of periodontal pockets were highly prevalent (p<0.05) after the provision of scaling insurance once a year. The decay, missing, and filled teeth index scores were higher before the provision of scaling insurance once a year (p<0.05). Conclusions: The aforementioned results showed that scaling once a year helps prevent or treat periodontal disease. In addition, we confirmed the effect of prevention on periodontal disease and dental caries, therefore, we expect it to develop into a stable policy.