• Title/Summary/Keyword: Consistency Control

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A Preliminary Study on Validity of Korean Behavior Rating Inventory of Executive Function-Preschool Version(BRIEF-P) (한국판 유아용 실행기능 척도(BRIEF-P)의 타당화를 위한 예비연구)

  • KOWN, Yeon-Hee
    • Journal of Fisheries and Marine Sciences Education
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    • v.29 no.2
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    • pp.436-446
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    • 2017
  • This study was performed to verify the validity and utility of the Korean Behavior Rating Inventory of Executive Function-Preschool Version(BRIEF-P). The BRIEF-P is one of the most used instruments to measure Executive Function(EF) and a teacher-rating assessment method designed to measure the executive function of preschoolers(age 2-5). A total of 200 preschoolers(104 boys, 96 girls; recruited aged 3 to 5years) participated. Confirmatory factor analysis was carried out to evaluate the model structure. Correlation analysis was done to verify the concurrent validity. In the results, the model fit indexes were good with the five BRIEF-P subscales (that is, inhibit, shift, emotional control, working memory, plan/organize). The internal consistency of the BRIEF-P five subscales were supported. As a results, the Korean Behavior Rating Inventory of Executive Function-Preschool Version(BRIEF-P) was confirmed to be a reliable and valid assessment tool to measure executive function in preschoolers.

The Relationship Between Postural Control, ADL Function, Muscle Tone, and Functional Improvement in Chronic Stroke Patients (만성 뇌졸중 환자의 자세 조절과 일상생활동작, 근긴장도, 그리고 기능증진과의 관계)

  • An, Seung-Heon;Seo, Young-Jong;Park, Chang-Sik
    • Physical Therapy Korea
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    • v.14 no.1
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    • pp.64-73
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    • 2007
  • The purpose of this study was to find any correlations among Postural Assessment Scale for Stroke (PASS), Modified Barthel Index (MBI), Tone Assessment Scale (TAS), Motor Assessment Scale-Gait (MAS-G), Fugl Meyer-Balance (FM-B), and to predict MBI from subscales of the PASS. The subjects were 41 stroke patients of the Korea National Rehabilitation Center in Seoul. The main outcome measures were postural control (PASS), gait (MAS-G), Balance (FM-B), Tone (TAS), ADL (MBI). The data was analyzed using the Pearson product correlation. PASS scale was used between other clinical and instrumental indexes, multiple stepwise regression analyses were performed to identify prognostic factors for ADL incline, and Cronbach's alpha coefficient was used to identify internal consistency on PASS scale. The results of this study areas follows: 1. The highest level was sitting without support, the lowest level was standing on paretic leg on PASS scale. The highest level was chair/bed transfer, the lowest level was bathing on MBI. 2. All items of the PASS, except postural tone were significantly correlated with Gait, Balance, MBI (p<.01), 3. The Internal Consistency (Cronbach's alpha coefficient=.85) was very high, indicating that the PASS is homogeneous and is likely to produce consistent response. Furthermore, the sums of maintaining position items and of changing-position items were strongly correlated (r=.64, p<.05) and there were significant correlations between sums of PASS, sums of maintaining position items (r=.87, p<.01), and changing-position items (r=.93, p<.01). 4. The standing without support of the PASS items was the strongest variance ($R^2$=.85) of the predicting ADL function. These findings provide strong evidence of the predictive value of the postural control on gait, Balance, ADL function in stroke patients and to can provide a reference for the successful therapeutic program and more improved functional recovery.

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A Study for Time-Driven Scheduling for Concurrency Control and Atomic Commitment of Distributed Real-Time Transaction Processing Systems (분산 실시간 트랜잭션 처리 시스템의 동시 실행 제어와 원자적 종료를 위한 시간 구동형 스케쥴징 기법 연구)

  • Kim, Jin-Hwan
    • The Transactions of the Korea Information Processing Society
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    • v.3 no.6
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    • pp.1418-1432
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    • 1996
  • In addition t improved availability, replication of data can enhance performance of distributed real-time transaction processing system by allowing transactions initiated at multiple node to be processed concurrently. To satisfy both the consistency and real-time constraints, it is necessary to integrate concurrency control and atomic commitment protocols with time-driven scheduling methods. blocking caused by existing concurrency control protocols is incompatible with time-driven scheduling because they cannot schedule transactions to meet given deadlines. To maintain consistency of replicated data and to provide a high degree of schedulability and predictability , the proposed time-driven scheduling methods integrate optimistic concurrency control protocols that minimize the duration of blocking and produce the serialization by reflecting the priority transactions. The atomicity of transactions is maintained to ensure successful commitment in distributed environment. Specific time-driven scheduling techniqueare discussed, together with an analysis of the performance of this scheduling.

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The Development of an Inventory for Measuring the Modes of Verbal Control of korean Parent (부모의 언어통제유형 척도의 개발)

  • Lee, Kyung Hee;Chung, Ock Boon
    • Korean Journal of Child Studies
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    • v.15 no.2
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    • pp.69-96
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    • 1994
  • The purpose of this study was to develop an inventory for measuring verbal control modes of korean parent. The subjects of this study were 332 children of fifth and sixth grade in elementary schools located in Seoul. Forty seven questions were developed, of which 24 were collected from other previous studies and 23 were newly developed by the researcher and each question was composed of 3 items. The 141 items (47 questions x 3 items) were analyzed by the statistical methods of item analysis, principal factor analysis. The resulting inventories composed of 28 (84 items) and 29 (87 items) questions assess the three types of verbal control modes of both mothers and fathers: imperative control, position-oriented control and person-oriented control. Internal consistency of the scale was high (Cronbach's= .91-.95). Factor validity was also satisfactory (.66-.87).

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The Physico-chemical and Sensory Properties of Milk with Water Soluble Chitosan (수용성 Chitosan을 첨가한 우유의 이화학적 및 관능적특성)

  • Lee, Jae-Won;Lee, Young-Chun
    • Korean Journal of Food Science and Technology
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    • v.32 no.4
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    • pp.806-813
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    • 2000
  • Attempts were made to evaluate possibilities of adding water soluble chitosan to milk for improving functionality of milk, and physico-chemical and sensory properties of chitosan added milk were studied. pH and acidity of milk with ethyl alcohol washed chitosan were close to those of control. Color and consistency of chitosan added milk were better with chitosan of lower molecular weight than with high molecular weight. Chitosan of high molecular weight resulted in increased consistency and browning of milk. Milk with less than 1.0% chitosan could be sterilized at $73^{\circ}C$ for 15 sec. with minimum protein coagulation and increase of consistency. Low molecular weight chitosan$(MW\;0.2{\sim}3\;kDa)$ accelerated the growth of Bifidobacterium bifidum, showing 10 times more cell population after 32 hrs incubation. Sensory tests showed that adding chitosan to the regular city milk resulted in significant difference in color and chemical off-flavor(p<0.05). When chitosan was added to coffee milk, there was no significant difference in sensory quality from control. The storage test showed that pH, acidity, consistency and color of coffee milk with 0.5% chitosan did not change markedly during 30 days storage at 0 and $5^{\circ}C$, but changed rapidly after 16days storage at $10^{\circ}C$. Bacterial counts increased when storage temperature was high, and the growth of bacteria was delayed in coffee milk with chitosan.

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SPECIFICATION AND CONTROLLER SYNTHESIS FOR THE HIERARCHICAL CONTROL OF FMS

  • Chang, Jin-Tae;Kim, Hun-Tai;Kang, Suk-Ho
    • Management Science and Financial Engineering
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    • v.3 no.2
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    • pp.71-92
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    • 1997
  • Developing FMS controllers has been a difficult problem largely because of the variety of the system configuration. The purpose of this paper is to develop a method of building an FMS controller. The controller consists of control module and execution module. A hierarchically layered structure of these modules is proposed. The control module generates abstract-level execution requested by identifying a set of activities that can be executed without creating any irregular state. The execution module transmits the requests to physical device controllers and reports back the completion of the requests to the control module. Both of these two modules use Petri Net-based models. In this paper, a controllable Petri Net model is automatically synthesized from declarative specifications provided by a user. An execution Petri Net model for the execution module is designed to ensure the consistency between the control module and the real target system. The controller operates in MMS on TCP/IP and UNIX environment.

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BASIS WEIGHT PROFILE CONTROL OF A PAPER MACHINEA

  • Matsuda, Mitsuharu
    • 제어로봇시스템학회:학술대회논문집
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    • 1988.10b
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    • pp.864-868
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    • 1988
  • During the 1980s, the use of high-speed printing and copying machines which will not tolerate much variation in paper weight has increased. As a result, there is a growing demand for improved basis weight control systems for paper machines. Basis weight, the weight of a square meter sheet of paper, is the most important measure of paper consistency. Until quite recently, basis weight could only be controlled manually; this required experienced operators. The reasons for the difficulty in automating control of basis weight is due to the complexity and variability of process characteristics, the "noisiness" of the process (process disturbances), and actuator inadequacies. This paper describes a method of automatic control that we have developed; it incorporates the experience of expert operators, and the results of simulation, in confidence factors.e factors.

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A Study on the Linear Motor Control System (니리어모터 이송계 제어 특성분석에 관한 연구)

  • Yoo, Song-Min
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2003.04a
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    • pp.466-471
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    • 2003
  • In order to analyze linear motor driven feed system, preliminary studies have been conducted focusing on the performance evaluation of the system based on the various combination of control gain along with acceleration. Tentative simulation revealed that due to the complexity of control system reduced number of control condition is recommended. Actual machining process with conventional feed system using endmill tool was employed as a preliminary study. Several sensing methods including AE, acceleration sensors and tool dynamometer were used. Results revealed the consistency in AE and cutting resistance. There were inconsistent empirical results in accelerometer probably due to the insensitivity of the sensor signal with respect to the experimental system

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A Study on standardization of control cable numbering for high speed railway substation (고속전기철도 변전소 제어케이블 번호부여체계 표준화에 관한 연구)

  • An, Seung-Hwa;Kim, Si-Koo;Kim, Baik;Rho, Sung-Chan;Jung, Sang-Ki;Ann, Young-Hoon
    • Proceedings of the KSR Conference
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    • 2008.11b
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    • pp.337-346
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    • 2008
  • In this paper, a study an standardization of control cable numbering for high speed railway substation. Standard numbering structure of substation control cable and consistency of the number system are important for the railway substation construction and maintenance. However, currently control cable number system of railway substation was not standardization which was different according to a bander and a construct company. Therefor there is many difficult which does a same function to differ in maintenance and repair to accident. Therefor Standardizes the number system of the substation control cable is useful for an improve of construction and maintenance.

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A Fault Tolerant Transaction Management in Multidatabase Systems (멀티 데이타베이스 시스템에서 고장을 허용하는 트랜잭션 관리)

  • Sin, Seong-Cheol;Hwang, Bu-Hyeon
    • The Transactions of the Korea Information Processing Society
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    • v.1 no.2
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    • pp.172-183
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    • 1994
  • In the multidatabase systems(MDBS), local autonomy and global consistency are important issues. Global consistency could be maintained by a global concurrency control algorithm and a global recovery algorithm. In this thesis, we propose a global concurrency control algorithm to ensure local autonomy and to guarantee global serializability, and a global recovery algorithm which is possible to recover the multudatabase from any failures. The proposed global concurrency control algorithm uses bottom-up approach, based on three-level transaction processing model. It can produce a local history that the execution order of subtransactions is identical to their serialization order by using dummy-operations in the server when an indirect conflict is caused between subtransactions due to local transactions. At the global module, it can efficiently validate global serializability of global transactions by checking global serializability only for the global transactions which conflict with each other.

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