• ETRI Journal
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• v.30 no.2
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• pp.238-248
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• 2008

At the extremes of the complexity-performance plane, there are two exemplary QoS management architectures: Integrated Services (IntServ) and Differentiated Services (DiffServ). IntServ performs ideally but is not scalable. DiffServ is simple enough to be adopted in today' core networks, but without any performance guarantee. Many compromise solutions have been proposed. These schemes, called quasi-stateful IntServ or stateful DiffServ, however, have not attracted much attention due to their inherently compromising natures. Two disruptive flow-based architectures have been recently introduced: the flow-aware network (FAN) and the flow-state-aware network (FSA). FAN's control is implicit without any signaling. FSA's control is even more sophisticated than that of IntServ. In this paper, we survey established QoS architectures, review disruptive architectures, discuss their rationales, and points out their disadvantages. A new QoS management architecture, flow-aggregate-based services (FAbS), is then proposed. The FAbS architecture has two novel building blocks: inter-domain flow aggregation and endpoint implicit admission control.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.377-378
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• 2008

Morphology is one of important issues when developing a layer of CVD-W. we need to control the process more precisely that is filling gaps between BL(bit line)and DC(direct contact). Whereas we are facing to difficulties like not-filling contacts due to marginal problems in deposition and etching process. This paper is for investigating a method to resolve morphology problem with strengthening the condition of seasoning.

• Quality Improvement in Health Care
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• v.27 no.1
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• pp.43-50
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• 2021

Purpose: The aim of this study was to determine the effect of side walking on balance confidence, falls efficacy and fall risk in acute stroke patients. Methods: The study included 14 patients with acute stroke who were randomly allocated to a side walking group (Experimental group, N=7) and a forward walking group (Control group, N=7). Both groups performed the exercise 5 times a week for 2 weeks. Outcomes were assessed using Korean-Activities-specific Balance Confidence Scale (K-ABC), Korean-Fall Efficacy Scale (K-FES), Korean-Fullerton Advanced Balance Scale (K-FAB). Results: After 2 weeks of training, both groups showed significantly improved ABC, FES, FAB (p<.05 in both groups). However, the ABC, FES, FAB in the experimental group was significantly better than in the control group (p<.05). Conclusion: These findings indicate that side walking training may be effective at improving balance confidence and decreasing fall down risk in early stroke patients. Therefore, side walking training may be recommended as an intervention in reducing the incidence of falls in acute stroke patient.

• Physical Therapy Rehabilitation Science
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• v.12 no.2
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• pp.167-176
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• 2023

Objective: The purpose of this study was to investigate the effects of anon-contact complex exercise program on muscle strength, fall efficacy, quality of life, and balance ability in older over 65 years of age. Design: A randomized controlled trial Methods: A total of 37 people in older over 65 years of age participated in the study. Random program was conducted and assigned to the experimental group (n=19) and the control group (n=18). Both groups performed the older people welfare center program. In addition, in the experimental group, a non-contact complex exercise program for muscle and balance exercise was performed. All interventions were performed 2 times a week, for a total of 6 weeks. chair stand test (CST), fall efficacy scale (FES), Euro quality of life 5 dimension (EQ-5D), Berg balance scale (BBS), timed up and go test (TUG), Fullerton advanced balance scale (FAB) were measured before and after the intervention to compare their effectiveness. Results: Both groups showed significant differences in CST, FES, EQ-5D, BBS, and TUG before and after intervention (p<0.05). FAB showed significant differences before and after intervention in all items except for FAB 8 and 9 items in the experimental group. In addition, the experimental group showed significant differences in CST, FES, BBS, TUG, FAB (except 1, 7, 8, 9) compared to the control group (p<0.05). Conclusions: The non-contact complex exercise program is an effective intervention method that has clinical significance in improving muscle strength, fall efficacy and static and dynamic balance abilities for the older over 65 years of age.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07a
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• pp.539-542
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• 2005

We report how to establish the dynamic index for production control in a pilot fabrication over versatile and diverse production environments. We used dynamic index provided by a simulation model to monitor production performance. When production control is abnormal, the information system prompts administrators to classify these abnormal situations. In addition, the trend over the operation index is continuously reviewed in short-term and long-term. This simulation model is handy at setting goal for a versatile and diverse pilot production fab.

• Journal of Korea Multimedia Society
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• v.3 no.4
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• pp.407-415
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• 2000

The ultimate goal of flow control in the semiconductor fabrication process, one of the most equipment-intensive and complex manufacturing process, is to reduce lead time and work in process. In this paper, we propose stand alone layout in the form of job shop using group technology to improve the Productivity and eliminate the inefficiency in FMS (flexible manufacture system). The performance of stand alone layout and in-line layout are analyzed and compared while varying number of device variable chanties. The analysis of in-line layout is obtained by examining its adoption in the memory products of semiconductor factory. The comparison is performed through simulation using ProSys; a window 95 based discrete system simulation software, as a tool for comparing performance of two proposed layouts. The comparison demonstrates that when the number of device variable change is small, in-line layout is more efficient in terms of production Quantity. However, as the number of device variable change is more than 14 times, stand alone layout prevails over in-line layout.

• Journal of Korean Physical Therapy Science
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• v.29 no.3
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• pp.1-11
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• 2022

Background: The aim of this randomized controlled pilot study was to determine the effect of trunk training in wheelchair on fall efficacy, fall risk and activities of daily living in acute stroke patients. Design: Randomized controlled pilot trial. Methods: The study included 18 patients with acute stroke who were randomly allocated to an experimental group (EG) (n=9) and a control group (CG) (n=9). Patients in the EG group received general rehabilitation therapy combined with trunk training in wheelchair for 20min, whereas CG group received general rehabilitation therapy combined with bicycle training for 20min. Both groups performed the exercise 5 times a week for 3 weeks. Outcomes were assessed using Korean-Fall Efficacy Scale (K-FES), Fullerton Advanced Balance Scale (FAB) and Korean-Modified Barthel Index (K-MBI). Results: After 3 weeks of training, both groups showed significantly improved K-FES, FAB and K-MBI (p<.05 in both groups). However, the K-FES, FAB and K-MBI in the experimental group was significantly improving than in the control group (p<.05). Conclusion: These findings indicate that trunk training in wheelchair may be effective at decreasing fall risk and improving activities of daily living in acute stroke patients. Therefore, trunk training in wheelchair may be recommended as an intervention in reducing the incidence of fall risk in acute stroke patient.

• Natural Product Sciences
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• v.6 no.2
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• pp.79-81
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• 2000

Investigation of the fruits of Chaenomeles sinensis (Rosaceae) resulted in the isolation of a minor flavonoid. The structure of flavanone glycoside was determined to be as $2-hydroxynaringenin-7-O-{\beta}-glucoside$ on the basis of FAB-MS and spectral evidence, especially by 2D-NMR $(^1H-^1H\;COSY,\;HMQC,\;HMBC\;and\;NOESY)$.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.5
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• pp.1074-1081
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• 2009

The importance of improving semiconductor fab layout has been increased with the necessity of a large-scale capital investment and the increase of manufacturing complexity of the system. For the present, most semiconductor fab takes the form of a bay type layout where the same types of machines has been laid at the same bay. The bay type layout has many disadvantages in respect of material flow control even though it has merits of flexibility. To overcome the drawbacks of the bay type layout, a new room type semiconductor layout which integrates bays without a center spine and maintains the flexibilities of the bay type has been presented and compared with existing layouts. The results of test show that the room type layout is superior to the existing layouts from standpoints of transportation number and time, foot-print, number of stocker being passed and material flow time.

• IE interfaces
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• v.21 no.2
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• pp.141-150
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• 2008

In this paper, an efficient control method for semiconductor fabrication process is presented. Generally, control is performed with data which is under the influence of process disturbance. EWMA is one of the most popular control methods in semiconductor fabrication that effectively deals with varying process condition. A new method using EWMA, called the Dual Damping EWMA, is presented in this study to reduce over-control by separating weight factor of input and output. The goal is to reflect Drift but reduce the effects of White noise in run to run control. Simulation is performed to evaluate the performance of DPEWMA and to compare with EWMA and Double EWMA.