• 대한가정학회지
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• 제47권4호
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• pp.37-48
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• 2009

This purpose of this study was to examine the connections between positive maternal psychology, internal control, and parenting stress of mothers with young children. The subjects were 398 mothers living in Buchon city. Collected data were subjected to descriptive statistical analysiss, Pearson’s correlation, and multiple regression analysis. Results showed that employed mothers had higher positive psychology and lower parenting stress than unemployed mothers. In addition, positive maternal psychology, internal-external control, and parenting stress were all related to each other. In particular, positive psychology was the strongest predictor for parental stress.

• 대한가정학회지
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• 제38권10호
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• pp.15-26
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• 2000

This study was to investigate cross-situational consistency in copings and copings according to an internal/external locus of control. The subjects were 489 the sixth grade children selected from seven elementary schools in Seoul. The data were analyzed using Pearson's correlation and ANOVA Major findings were that (1) Correlations among corresponding copings across stress situations-such as parents, friend-alienation, friend-conflict, and loaming related stress situations- ranged from r=.27 to r=.67, reflecting cross-situational consistency in copings. (2) Generally, children with an internal locus of control used more active coping behaviors, but used less passive and aggressive coping behaviors than children with an external locus of control in stress situations.

• 한국음향학회지
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• 제11권3호
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• pp.25-39
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• 1992

압전 센서와 액츄에이터를 이용한 단순지지 평판의 진동제어에 관해 이론적 고찰을 하였다. 적절한 센서, 액츄에이터의 운동방정식을 구한 후 평판으 ㅣ운동 방정식과 결합해 능동 진동제어 시스템을 구성하였으며, 외력과 제어력의 복합 영향을 고려한 평판의 진동 진폭 반응을 해석하였다. 본 방법의 효용성을 보이기 위해 집중 응력과 압전구동기에 의한 모멘트의 두가지 외력에 대한 진동반응을 수치해석 하였으며, 그 결과 압전 센서와 액츄에이터로써 구조물의 외력에 대한 진동반응을 효율적으로 감소시킬 수 있었다. 본 연구에서 고찰된 방법은 임의의 외력 조건과 제어 알고리즘에 적용이 가능하다.

• 한국전기전자재료학회논문지
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• 제20권8호
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• pp.731-735
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• 2007

We developed the 4channel Light Medical Therapy Apparatus for External Injury Cure using a high brightness LED. This equipment was fabricated using a micro-controller and a high brightness LED, and designed to enable us to control light irradiation time, intensity, frequency and so on, Especially, to control the light irradiation frequency, FPGA was used, and to control the change of output value, TLC5941 was used. Control stage is divided into 4 levels by program. Consequently, the current value could be controlled by the change of level in Continue Wave(CW) and the output of a high brightness LED could be controlled stage by stage. Compared with one LED irradiation, several LEDs irradiation could increase optical power.

• 항공우주시스템공학회지
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• 제18권4호
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• pp.1-9
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• 2024

본 연구에서는 소형 유도무기에 적용된 직구동방식의 보이스 코일 구동장치의, 외력으로부터의 제어 강인성과 출력 데드존에 대한 응답성을 향상시키기 위한 제어 보상 기법 연구를 수행하였다. 비행체의 날개는 비행 상황에서 항력과 양력, 추력 등 다양한 비선형적인 외부 힘을 견디면서 명령 각도에 대한 최적화 제어를 수행하여야 한다. 적용하고자 하는 직구동방식의 소형 보이스 코일 구동장치는 무부하 상황에서 작은 전류로 제어가 가능하다는 이점이 있지만, 외력이 작용하는 상황에서 제어를 위한 사용 전류량이 급격하게 커져 제어 강인성이 떨어지는 단점이 있다. 이 문제를 해결하기 위해 오차에 대해 추가적으로 출력을 누적하여 보상해주는 시스템을 설계 및 적용하여, 외력이 작용하는 제어 상황에서의 구동장치 응답성을 개선하였고 실험을 통해 이를 입증하였다.

• 한국산업융합학회 논문집
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• 제20권2호
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• pp.177-186
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• 2017

With the latest developments in ICT(Information Communication Technology) technology, research on Intelligent Car, Connected Car that support autonomous driving or services is actively underway. It is true that the number of inputs linked to external connections is likely to be exposed to a malicious intrusion. I studied possible security issues that may occur within the Connected Car. A variety of security issues may arise in the use of CAN, the most typical internal network of vehicles. The data can be encrypted by encrypting the entire data within the CAN network system to resolve the security issues, but can be time-consuming and time-consuming, and can cause the authentication process to be carried out in the event of a certification procedure. To resolve this problem, CAN network system can be used to authenticate nodes in the network to perform a unique authentication of nodes using nodes in the network to authenticate nodes in the nodes and By encoding the ID, identifying the identity of the data, changing the identity of the ID and decryption algorithm, and identifying the cipher and certification techniques of the external invader, the encryption and authentication techniques could be detected by detecting and verifying the external intruder. Add a monitoring node to the CAN network to resolve this. Share a unique ID that can be authenticated using the server that performs the initial certification of nodes within the network and encrypt IDs to secure data. By detecting external invaders, designing encryption and authentication techniques was designed to detect external intrusion and certification techniques, enabling them to detect external intrusions.

• 한국학교ㆍ지역보건교육학회지
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• 제11권2호
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• pp.129-140
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• 2010

Objectives: The purpose of this study is to be conducive to selecting effective educational method for AED(Automated External Defibrillator) education through comparing educational effects between VSI(Video Self-Instruction) and lecturer-centered learning on AED(Automated External Defibrillator) in undergraduates. Method: This study targeted totally 76 undergraduates (39 people for experimental group, 37 people for control group) at J university where is located in J province, from June 8, 2009 to June 12. The analytical method was performed by using SPSS WIN 12.0 Version program. Results: In difference before and after education of the skill performance accuracy in AED between groups, the experimental group(2.89) was higher compared to the control group(2.75). In difference before and after education of knowledge in AED between groups, the experimental group(2.03) was higher compared to the control group(1.82). In difference before and after education of attitude toward AED between groups, the control group(2.14) was higher compared to the experimental group(1.85). In difference before and after education of self-confidence in AED between groups, the experimental group(1.88) was higher compared to the control group(1.76).

• 한국치위생학회지
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• 제11권4호
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• pp.571-580
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• 2011

Objectives : This study focused on examine the relevance between behavioral changes of customers and re-use intention on medical institution after experiencing infection control through external stimuli. Methods : This research was based on self-standing survey conducted from August to November 2010, 214 people who randomly selected from five dental clinics located in Busan were analyzed as the final group. Collected data were performed using SPSS 12.0 for Window. Results : 1. 82.8% of those surveyed who experienced external stimulation have changed their behavior on hospital environments and facilities, and 80.5% of them answered the stimuli influenced their re-use intention on medical institution. 2. There were no significant differences between participants by general characteristics on 'The reason why medical team wear sanitary appliances'. In age group 30~39, 85.4% of participants chose the answer so the difference were statistically significant(p<.001). Result by household income showed significant difference in group over $1,000 to $2,000 as 82.7% response(p<.05). 3. 94.4% of participants chose 'Required' for both surgical suits and gloves in research of 'The necessity level of personal sanitary appliances' which medical teams wear for treatment and 79.4% agreed that medical teams need to change their medical gloves whenever treating each patients. 4. The survey revealed that the most important appliance in patient's awareness were surgical gloves and protective goggles has chosen as the least important one. Conclusions : Patients as medical consumer were highly noticed of importance of the infection control in dental clinic and necessity of personal sanitary appliances. The patients who has accessed dental infection control information by external stimuli in advance showed objectival changes of their visit and behavioral changes with bringing medical environments together. This aspects influenced those patient's re-use intention in conclusion.

• 한국정밀공학회지
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• 제26권4호
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• pp.82-90
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• 2009

Pneumatic cylinder is one of the low cost actuation sources which have been applied in industrial and prosthetic application since it has a high power/weight ratio, a high-tension force and a long durability However, the control problems of pneumatic systems, oscillatory motion and compliance, have prevented their widespread use in advanced robotics. To overcome these shortcomings, a number of newer pneumatic actuators have been developed such as McKibben Muscle, Rubber Actuator and Pneumatic Artificial Muscle (PAM) Manipulators. In this paper, one solution for position control of a robot arm, which is driven by two pneumatic artificial muscles, is presented. However, some limitations still exist, such as a deterioration of the performance of transient response due to the changes in the external load of the robot arm. To overcome this problem, a switching algorithm of the control parameter using a learning vector quantization neural network (LVQNN) is proposed in this paper. This estimates the external load of the pneumatic artificial muscle manipulator. The effectiveness of the proposed control algorithm is demonstrated through experiments with different external working loads.

• 인터넷정보학회논문지
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• 제19권2호
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• pp.27-32
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• 2018

In industries that are operating various enterprise systems, new systems are integrated and operated in accordance with each period. In particular, when a new system is to be integrated, one of the major considerations is the single sign-on part for integrating and operating the authentication. To implement this authority system using role-based access control method, an extension method for access control method is needed. Therefore, in this paper, we design an extended role-based access control model for interworking with legacy authority system and provide its APIs. The extended role-based access control model is a model in which external authority information, which holds authority information in the authority information, is added. And we describe operations that the REST Web APIs are based on these models. In this paper, the method is described in the back-end APIs and can be implemented as an operation of an extended role-based access control system based on the method.