• Korean Journal of Health Education and Promotion
• /
• v.19 no.3
• /
• pp.97-105
• /
• 2002

This study attempts to develop a program for obesity prevention and management for students in primary, middle, and high school and was carried based on the program development process as suggested by Ewles and Simnett. Data were collected from September 1st to September 30th, 2000. The study method is as follows: 1) Reviewing the present obesity control programs practiced in primary, middle, and high school (196 schools total) in metropolitan, medium-sized, and small cities, 2) Surveying obesity students'(682 students total) perception of the obesity management in their school. 3) Reviewing the annual plan for obesity in primary, middle, and high schools 4) Analyzing the educational data (CD, VIDEO) for obesity The results are as below: I. The media researched related to obesity were mainly CD and video, aimed primarily primary school students and are biased in nature. 2. The results of how to manage obesity in students: the difficulty of obesity education in the primary school, is the arousal of a sense of shame among obese students and the lack of various educational data are the most. In the middle and high schools, a lack of various educational data, and no time or lack of time were prevailing concerns. Paramount in managing obesity is weight control, as answered by majority of primary, middle, and high school students. The major problem of obesity management is the non-cooperation of children. 3. Asked whether the weight controlling aspect of health care class was helpful or not, 51.4% of primary school students, and 71.6% of middle and high school students answered not. The most popular educational method used in health care class is the computer, with a 56.4% approval rating. Most 43.5% of respondents answered that they wanted the content of obesity management program to focus on how to lose weight. Therefore, based on the results, the obesity management program is constructed to the steps of assessment, planning, implementation, and evaluation. Assessment includes administering surveys on health needs among students and their parents and physique tests. Planning includes the set-up of long term and short term educational goal and the establishment of an operation system. Implementation includes education, exercise, behavior modification, and health service programs. Evaluation includes step-by-step evaluations for obesity reduction. After this study is conducted, the following should be further researched: More practical and systematic obesity management programs should be developed for the evaluation results. In addition, it is important to develop an appropriate media for obesity management the primary, middle and high school students.

• Journal of Bio-Environment Control
• /
• v.5 no.1
• /
• pp.89-97
• /
• 1996

Oriental melon and watermelon plants were cultivated in the soil treated with bioceramics in a greenhouse during summer season from June 1st to August 20th, 1995. Two application methods were employed, one was a mixed treatment of soil and bioceramics, and the other was a spray treatment of bioceramic solution on the stems and leaves. And two types of bioceramics were also stopped by five levels. In order to analyze the bioceramic effect on oriental melon and watermelon, the growth rate of stems, leaves and fruits were measured in the greenhouse. After harvest, the sweetness of fruits was measured and the freshness of fruits based on the storage period was tested by human taste and smell sense. The results are summarized as follows. 1. The growth rates of stems, leaves and fruits of oriental melon and watermelon were the largest in the bioceramic treatment of No. 3. 2. The density of oriental melon and watermelon was the largest in the bioceramic treatment of No. 3 and No. 2 respectively. 3. The Brix number of watermelon was 10.6 in non-bioceramic treatment and 11.5 in the bioceramic treatment of No. 2, and that of oriental melon was 8.6 in non-bioceramic treatment and 12.3 in the bioceramic treatment of No. 2. 4. The storage duration of watermelon treated with bioceramics was about 50 days in the condition of the ambient temperature of 25-3$0^{\circ}C$.

• Food Science of Animal Resources
• /
• v.26 no.3
• /
• pp.402-409
• /
• 2006

Although microorganisms are, in fact, the most diverse and abundant type of organism on Earth, the ecological functions of microbial populations remains poorly understood. A variety of bacteria including marine Vibrios encounter numerous ecological challenges, such as UV light, predation, competition, and seasonal variations in seawater including pH, salinity, nutrient levels, temperature and so forth. In order to survive and proliferate under variable conditions, they have to develop elaborate means of communication to meet the challenges to which they are exposed. In bacteria, a range of biological functions have recently been found to be regulated by a population density-dependent cell-cell signaling mechanism known as quorum-sensing (QS). In other words, bacterial cells sense population density by monitoring the presence of self-produced extracellular autoinducers (AI). N-acylhomoserine lactone (AHL)-dependent quorum-sensing was first discovered in two luminescent marine bacteria, Vibrio fischeri and Vibrio harveyi. The LuxI/R system of V. fischeriis the paradigm of Gram-negative quorum-sensing systems. At high population density, the accumulated signalstrigger the expression of target genes and thereby initiate a new set of biological activities. Several QS systems have been identified so far. Among them, an AHL-dependent QS system has been found to control biofilm formation in several bacterial species, including Pseudomonas aeruginosa, Aeromonas hydrophila, Burkholderia cepacia, and Serratia liquefaciens. Bacterial biofilm is a structured community of bacterial cells enclosed in a self-produced polymeric matrix that adheres to an inert or living surface. Extracellular signal molecules have been implicated in biofilm formation. Agrobacterium tumefaciens strain NT1(traR, tra::lacZ749) and Chromobacterium violaceum strain CV026 are used as biosensors to detect AHL signals. Quorum sensing in lactic acid bacteria involves peptides that are directly sensed by membrane-located histidine kinases, after which the signal is transmitted to an intracellular regulator. In the nisin autoregulation process in Lactococcus lactis, the NisK protein acts as the sensor for nisin, and NisR protein as the response regulator activatingthe transcription of target genes. For control over growth and survival in bacterial communities, various strategies need to be developed by which receptors of the signal molecules are interfered with or the synthesis and release of the molecules is controlled. However, much is still unknown about the metabolic processes involved in such signal transduction and whether or not various foods and food ingredients may affect communication between spoilage or pathogenic bacteria. In five to ten years, we will be able to discover new signal molecules, some of which may have applications in food preservation to inhibit the growth of pathogens on foods.

• The Plant Pathology Journal
• /
• v.36 no.6
• /
• pp.536-557
• /
• 2020

Sugarcane yellow leaf virus (SCYLV) is a distinct member of the Polerovirus genus of the Luteoviridae family. SCYLV is the major limitation to sugarcane production worldwide and presently occurring in most of the sugarcane growing countries. SCYLV having high genetic diversity within the species and presently ten genotypes are known to occur based on the complete genome sequence information. SCYLV is present in almost all the states of India where sugarcane is grown. Virion comprises of 180 coat protein units and are 24-29 nm in diameter. The genome of SCYLV is a monopartite and comprised of single-stranded (ss) positive-sense (+) linear RNA of about 6 kb in size. Virus genome consists of six open reading frames (ORFs) that are expressed by sub-genomic RNAs. The SCYLV is phloem-limited and transmitted by sugarcane aphid Melanaphis sacchari in a circulative and non-propagative manner. The other aphid species namely, Ceratovacuna lanigera, Rhopalosiphum rufiabdominalis, and R. maidis also been reported to transmit the virus. The virus is not transmitted mechanically, therefore, its transmission by M. sacchari has been studied in different countries. SCYLV has a limited natural host range and mainly infect sugarcane (Sachharum hybrid), grain sorghum (Sorghum bicolor), and Columbus grass (Sorghum almum). Recent insights in the protein-protein interactions of Polerovirus through protein interaction reporter (PIR) technology enable us to understand viral encoded proteins during virus replication, assembly, plant defence mechanism, short and long-distance travel of the virus. This review presents the recent understandings on virus biology, diagnosis, genetic diversity, virus-vector and host-virus interactions and conventional and next generation management approaches.

• Journal of Industrial Convergence
• /
• v.21 no.9
• /
• pp.77-87
• /
• 2023

The purpose of this study was to examine the effect of social relations satisfaction of low-income middle-aged and elderly single-person households on individual subjective happiness and to verify the mediating effect of depression and gender control to provide basic data for the development of related policies and programs. The SPSS WIN 25.0 program used frequency analysis, technical statistics analysis, correlation analysis, and PROCESS MACRO Model Number 4 to verify the mediating effect of 482 middle-aged singleperson households extracted using the "17th Korea Welfare Panel in 2022" survey data. In addition, the control effect was verified using PROCESS MACRO Model Number 1. The results of the study first showed that social relationship satisfaction after controlling demographic characteristics had a positive effect on subjective happiness. Second, it was found that depression had a partial mediating effect in the relationship between social relationship satisfaction and subjective happiness. Third, it was found that the higher the satisfaction level of social relationships among women than men, the greater the sense of happiness. Through this study, it is meaningful in that it identified the meaning of social relationships of middle-aged and elderly single-person households and presented practical implications so that they can be used as basic data for policy support measures.

• Journal of Institute of Control, Robotics and Systems
• /
• v.22 no.9
• /
• pp.705-709
• /
• 2016

Micro-electro-mechanical systems (MEMS) gyroscopes are widely used in various robot applications. However, these conventional gyroscopes need to vibrate the proof mass using a built-in actuator at a fixed resonance frequency to sense the Coriolis force. When a robot is not moving, the meaningless vibration of the gyroscope wastes power. In addition, this continuous vibration makes the sensor vulnerable to external sound waves with a frequency close to the proof-mass resonance frequency. In this paper, a feasibility study of a new type of gyroscope inspired by insect halteres is presented. In dipterous insects, halteres are a biological gyroscope that measures the Coriolis force. Wing muscles and halteres are mechanically linked, and the halteres oscillate simultaneously with wing beats. The vibrating haltere experiences the Coriolis force if the insect is going through a rotational motion. Inspired by this haltere structure, a gyroscope using a thin mast integrated with a robot actuation mechanism is proposed. The mast vibrates only when the robot is moving without requiring a separate actuator. The Coriolis force of the mast can be measured with an accelerometer installed at the tip of the mast. However, the signal from the accelerometer has multiple frequency components and also can be highly corrupted with noise, such that raw data are not meaningful. This paper also presents a suitable signal processing technique using the amplitude modulation method. The feasibility of the proposed haltere-inspired gyroscope is also experimentally evaluated.

• Parasites, Hosts and Diseases
• /
• v.35 no.4
• /
• pp.239-244
• /
• 1997

Genus Metasonimus has been a subject of taxonomic debates for several years. In morphological aspects, M. vokogawci has been thought to have three subtypes, namely Yokogawa type (M. yokogawai in strict sense) , Miyata type and Koga type. But dif- ferences in the intestinal pathology induced by these subtypes have not been studied yet. In this study we compared the pathological reactions inducted by M. yokoBnwai and Metcgonimus Miyata type using proliferating cell nuclear antigen (PCNA) index. Metacercariae (Mc) of M. yokogcuani were collected by artificial digestion of Plecoslossw oLtiveLis and Mc of Metngonimus Miyata type were collected from Zacco pEntvpus. Three hundreds Mc of each species were infected orally to ICR mice. The mice were sacrificed at 3, 6. 10. 16 and 23 days after infection and the small intestines were resected into three portions (proximal. middle, and distal) . Immunohistochemical staining for PCNA was done using PC-10 (DAKO-PCNA, CA, USA) The PCNA indices in M. Wokosnwci infected group on the 6th and 23rd day after infection were lower than in the control and Miyata type infect ed groups (p < 0.05) from all of the three intestinal regions. On the other hand, the control group and Ifetngonimus Miyata type infected group did not make any differences in PCNA indices. The villus/crypt WIC) ratio was also decreased significantly in M. Wokogcwni infected mice but not in Metagonimus Miyata type infected ones. It is suggested that M. wokogawci induce villous atrophy through a decrease in the cell proliferation at the crypt. The results of this study suggested that M. WokoBnwai induce more serious intestinal pathology than Metcsonimuf Miyata type.

• Korean Journal of Health Education and Promotion
• /
• v.21 no.4
• /
• pp.35-49
• /
• 2004

The purpose of this study was to analyze variables associated with smoking and selected health behaviors. This study targeted adult men and women over 20 of age. The sample population was drawn from the national sample, and the samples were chosen from the telephone book. A total of 1,500 cases were collected through a telephone based interview survey. As a tool for this study, a structured questionnaire was developed. the variables included self-perceived health status, and selected 7 health behaviors; smoking behavior, physical activities, eating habit, weight control, alcohol consumption, stress management, and cancer exam. The healthy life practice actions of Trans-theoretical model have been classified into five stages. Smokers were more likely than non-smokers to positive attitudes toward smoking and the impact of smoking in this study. This means that smokers's awareness toward the impact of smoking is very week. Smoking behavior was significantly related to other health related behaviors based on the correlation analysis. However, gender, engaging in regular physical activities, moderate consumption of alcoholic beverages, and receiving a cancer examination were the variables that can explain and predict a person's stages of adopting a non-smoking behavior. Self perceived health status was closely related to other health behaviors. Gender, age, and monthly household income were important demographic variables that have significant relationship with the self-perceived health status. Among the health behaviors, regular physical activities and weight control were significant predictable variables. Similar results have been found in the National health and Nutrition examination survey in Korea. As a result of this study, it was found that among the selected health behaviors, engaging in physical activity was an important variable to increase positive sense of health and non-smoking behaviors. Educational and policy level input is needed to increase awareness and provide chances to participate in fitness activities. To those who maintain exercise, the environmental support and diffusion of knowledge information and education data should be strengthened. To change attitudes toward smoking, more in-dept awareness campaign and education should be provided according to people's different behavioral status. In addition, not only diffusing health education data and delivering knowledge information through related programs, but also environmental support system that helps an individual maintain his/her action is required. Such a support system means settlement of the health enhancement base of school, workplace and community should be carried out, and the policy level support and regular programs should be provided and spread to the unit of community.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.1
• /
• pp.341-351
• /
• 2010

The administrative employees of government were analyzed on their levels of psychosocial stress and job satisfaction to reveal the various factors related to them. The self-administered questionnaires were performed, during the period between May 25th, 2007 and June 5th, to 550 individuals in the service of general administration located in Daejeon City. The Survey items included subjects' socio-denographic and job-related characteristics, health-related behavior pattern, locus of control, sense of self-esteem, psychosocial stresses and degree of job satisfaction. The study results indicate that the level of stress or job satisfaction is so complicatedly influenced by variable factors such as socio-demographic characteristics, job-related characteristics, health-related behaviors, or social psycologic factors like type A behavior pattern, internal locus of control, self-esteem or stress coping. Thus, the effective strategy for stress reduction and increase of job satisfaction among governmental employees requires additional programs.

• Korean Journal of Culture and Social Issue
• /
• v.12 no.5_spc
• /
• pp.1-28
• /
• 2006

This special issue examines factors influencing quality of life in Korean society. The special issue is based on the symposium, which was organized by the Korean Association of Psychological and Social Issues on August and December 2005. A review of the literature and also contributors to the special issue draw out six important factors that influence quality of life in Korean society: (1) financial stability, (2) harmonious interpersonal relationships, (3) emotional support, (4) psychological factors, such as self-regulation and self-efficacy, (5) academic achievement, and (6) health and leisure life. Koreans believe that financial resources are necessary in maintaining quality of life, and they must be supplemented with harmonious interpersonal relations in family, school and the workplace. As people become order, the importance of self-efficacy increases in order to maintain a sense of control in their lives. In addition, academic achievement, health, and leisure life contribute to quality of life. Finally, indigenous psychological analysis provides important insights into understanding factors influencing quality of life in Korean society.