• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.8
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• pp.2507-2528
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• 2022

Blockchain interoperability, which refers in particular to the ability to access information across blockchain systems, plays the key role for different blockchains to communicate with each other, and further supports the superstructure built on top of the cross-chain mechanism. Nowadays, blockchain interoperability technology is still in its infancy. The existing cross-chain scheme such as BTCRelay requires that the smart contract in a blockchain to download and maintain block headers of the other blockchain, which is costly in maintenance and inefficient to use. In this paper, we propose a supervision mechanism between blockchains, called Surveillant. Specially, the new entities called dual-functional nodes are introduced to commit the real-time information from the blockchain under supervision to the supervising blockchain, which enables users to have efficient cross-chain verification. Furthermore, we introduce Merkle mountain range for blocks aggregation to deal with the large-scale committing data. We propose the design of long orphan branch counter to trace the bifurcations in the blockchain under supervision. The existing incentive mechanism is improved to encourage the behaviors of dual-functional nodes. In Surveillant, the analysis and experimental results demonstrate that users are able to have efficient cross-chain verification with low maintenance overhead.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.6
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• pp.357-374
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• 2021

This study examined the difference in perception of supervision between supervisors and supervisees of community welfare centers. The survey subjects were 100 social workers working at social welfare centers in Seoul, Busan, and Incheon. The survey subjects were 62% women and 38% men in their 30s. Approximately 98% of supervisors and 88% of supervisees had a college degree or higher. Regarding the total working period of social welfare institutions, 82% of supervisors and 12% of supervisees had five years or more experience. Regarding the perception of the overall supervision between the supervisors and supervisees, the supervisors and supervisees reported a score of 3.79 and 3.46, respectively. In the perception of supervision according to function, in the case of administrative supervision recognition, the supervisors and supervisees reported a score of 3.78 and 3.43, respectively, and in the educational supervision recognition, the supervisors and supervisees reported a score of 3.65 and 3.29, respectively. Regarding supportive supervision perception, the supervisors and supervisees reported a score of 3.94 and 3.67, respectively. As shown in the above results, the difference in the perception of supervisor and supervisee's supervision by function shows that the supervisor's supervision by all functions is higher than that of the supervisee. As a result, such supervisions are relatively low among supervisees who are provided with supervisions than supervisions that are perceived as being provided by supervisors.

• Natural Product Sciences
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• v.10 no.6
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• pp.310-314
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• 2004

This is the re-arrangement of the 2004 Asia Nutrition & Dietary Supplement Conference organized by ABF(The Asia Business Forum) in Singapore, especially regulatory view of point of health functional foods for Korea, Japan, and China. Foods that may have health benefits beyond the traditional nutrients that they contain are often called 'Functional Foods'. The concept of functional foods has become popular in recent years, first in Japan and later in other countries, including the USA. In USA, The functional foods was controlled by ACSH (the American Council on Science and Health). In Korea, 'Functional Foods'. was defined on the 'The Law for the Health Functional Foods'(Law No. 6727 : effective as of $26^{th}$, Aug. 2002). KFDA(Korea Food and Drug Administration) is the only authority body for approval, advertisement and claims for the Health Functional Foods in Korea. In Japan, the Japan Health Food and Nutrition Food Association controls the approval, regulate functional foods' advertisement and claims under the name of FOSHU (Foods for Specified Health Uses). In China, the State Food and Drug Administration(SFDA) is the only authoritative organization for the application, supervision and administration of health related products. Asia, especially Korea, Japan and China, is one of the leader in the vitamins and dietary supplement(VDS) market. Regulatory issues on restrictions are the most important how to tap into the health functional foods market including Korea.

• Korean Journal of Health Education and Promotion
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• v.13 no.1
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• pp.28-44
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• 1996

The purpose of this study is to examine the associated risk factors for adolescent cigarette smoking. In February 1995, a total of 1793 students from 17 general high schools in Seoul were assessed with a self-completing questionnaire pertaining current smoking status and school.family.peer environmental factors. The results are as follows; 1. The overall proportion of current smoker among students in the study was 17.3%; 27.7% in males and 6.6% in females. 2. There was significant association between smoking status and all school environmental factors (ranks at school, satisfaction at school, study hours after school, extracurricular activity) examined. 3. Siblings smoking in males and family structure in females were significantly associated with the smoking status of students. 4. Functional aspect of family environmental factors, such as APGAR score, parental supervision, attachment to father or to mother were related to smoking status of students. 5. Association with friends who smoke was significantly associated with smoking status of students. 6. In males, association with friends who smoke, ranks at school, siblings smoking were significant positive predictors and APGAR score, parental supervision, attchment to mother were significant negative predictors. In females, association with friends whosmoke, ranks at school, satisfaction at school were significant positive predictors and parental supervision, attchment to father were significant negative predictors. These findings suggest that strategies that influence smoking behavior need to be directed not only to the individual student but also to their peer group, family and school environment.

• Journal of the korean academy of Pediatric Dentistry
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• v.36 no.1
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• pp.108-113
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• 2009

The functional regulator(FR) appliances act to remove the restrictive forces that prevent the normal maturation of the maxilla and mandible. FR appliances are different from other functional jaw orthopedic appliances(e.g., the twin block, bionator, and activator). $Fr{\ddot{a}}nkel$ has based his treatment philosophy on the concept that the capacity to regulate growth residues in the soft tissue environment, and that adequate space must be available for the proper development of the hard tissue. In class II malocclusion with mandibular retrusion, FR-II treatment is not only the change in the postural position of mandible, but also expansion of the dental arches. By balancing the neuromuscular environment, not only can severe malocclusions be treated successfully, but also the tendency toward relapse is minimized because the neural and soft tissue factors associated with the skeletal malocclusion have been addressed as well. We report cases using by FR-II that is applicated in cases of Class II malocclusion without fixed appliance, only FR-II and space supervision.

• Physical Therapy Korea
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• v.12 no.4
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• pp.1-6
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• 2005

Community-based group exercise programs for people with chronic stroke are relatively uncommon in Korea. In addition, it is currently not known whether a community-based group exercise program is effective or not. The purpose of this study was to evaluate an 8 week community-based functional exercise program for its effects on balance performance and occupational performance in persons with chronic stroke. Twenty-five community-dwelling individuals with stroke participated in this program. Outcome of the program was assessed by the Berg Balance Scale and the Canadian Occupational Performance Measure (COPM). The functional exercise program lasted for eight weeks, with a 1-hour program twice per week and it consisted of mobility, stability, balance, functional strength, and gait training. The subjects were trained by one physical therapist but were under one-to-one supervision from students. The data of sixteen individuals who scored more than 24 on the Mini-Mental State Examination (MMSE) were analyzed. There was a significant effect both in terms of the COPM Performance Score & the Satisfaction Score (p=.002) and with the Berg Balance Score (p=.001). It was found that a short-term community-based exercise program could improve both performance of activities and balance. Further, all subjects reported that they were satisfied with this program.

• Journal of the Korean Society for Railway
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• v.19 no.2
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• pp.159-169
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• 2016

The current railway control system in Korea is comprised of signaling, electric rail power, communication, and maintenance systems that are independent of each other. Further, these systems have different mediums and protocols for transmitting the field equipment data to the central control system. The Safety Supervision System has as its purpose the collecting of safety-related data from each system to predict and prevent accidents, this system utilizes standard protocol. Safety-related data need to be collected from field data transmission devices of the existing control system, the data should be collected without affecting the communication of the existing system. In this study, sniffing skill, which is typically used for network traffic monitoring or security, is used to collect data. The problems arising from the use of sniffing devices are noted, and the Packet Conversion Node is proposed as a solution to the problems. Further, functional and performance testing were completed for the prototype, and the software architecture and packet conversion process were verified.

• Journal of the Korean Society of Safety
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• v.25 no.6
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• pp.75-80
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• 2010

The present study presented the implementation of a remote control/supervision system for guard lamps used in public illumination with little endeavor by far for safe management, which makes possible to supervise the state and to control the functions remotely including electric safety elements. Especially, the developed system adopts the measurement algorithm for detecting resistive leakage current(Igr) flowing based on the phase difference checkable for sensing at a monitor, being allowable for monitoring at MMI and transmitter for data transmittance. To verify reliability about the algorithm to accurately detect Igr leakage current, the laboratory-based functional test was performed.

• The Journal of Korean Physical Therapy
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• v.12 no.3
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• pp.361-368
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• 2000

MET is one of the few physical therapy having its own criteria. Mr. Holten approached the Norwegian Health Authority in 1967 to get his MET System recognized as a treatment method of its own. He was granted his approval for his exercise system's specivic criteria connecteed with the treatment method. In MET, the patient exercises himself without manual participation by physiotherapists, however, under continuous supervision.. The apparatus should be designed that functional quality (arthrogenous, circulatory, respiratory, neuromuscular) in question is optimally influenced when the patient carries out exercise in a certain range against a graded resistance. The therapy reassesses the scheme of treatment at least every fifth session and the maximum number of patients being 5 person per hour. The important principles in medical exercise Therapy are stabilization of hyperfunction through the system of autostabilization and mobilization of hypofunction through automobilization. In MET excrcises are adjusted to the patient's reactions. MET equipment is therefore made to meet requirements for treating patients with painful pathological dysfunction in the musculo-skeletal system.

• Journal of the Korean Society of Food Culture
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• v.11 no.4
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• pp.507-515
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• 1996

Television food advertisement is the most effective way to reach to consumers with food and nutritional informations and affect their eating behavior. Therefore, 218 food commercials were reviewed using video tapes and copies to know the present food product trends, food messages they transmit and define misleading food commercials. Messages were focused on the benefit of health promoting substances they contain, especially for functional food components, fortified nutrients, food safety focused on food additives, convenience and differentiation with other products. Overnutrition on specific nutrients could be expected due to nutrient fortified products and misleading of food commercials were also noted. Regarding trends, guidelines provided by television broadcasting company shoud be fortified in the connection of Food Hygine Law and supervision committe should reinforce the food company to summit data for the approval of their advertisement claims. Nutrition educational spot program shoud be produced and broadcasted for the public to protect the consumer from food faddism in near future.