• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.9
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• pp.1623-1632
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• 2008

In food choice, consumers consider importantly food safely and reliability focusing on a high qualify control. Also they are concerned about sustainable production and consumption considering of area and environment. In this paper, We propose and design the high-quality seafood production support system that is based on international sanitary standard haccp, traceability and eco-fiendly seafood certification for safety and reliability of the seafood production. The system is categorized into five part: aquafarm haccp, environmental control monitoring, traceability, disease prevention and messenger service and seafood price inquiry service. The proposed system utilize diverse ubiquitous-it technologies like usn, network cctv, mobile device etc.

• Korean Journal of Agricultural Science
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• v.48 no.3
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• pp.617-627
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• 2021

In the field of on-road motor vehicles, the level for autonomous driving technology is defined according to J3016, proposed by Society of Automotive Engineers (SAE) International. However, in the field of agricultural machinery, different standards are applied by country and manufacturer, without a standardized classification for autonomous driving technology which makes it difficult to clearly define and accurately evaluate the autonomous driving technology, for agricultural machinery. In this study, a method to classify the autonomy levels for autonomous agricultural machinery (ALAAM) is proposed by modifying the SAE International J3016 to better characterize various agricultural operations such as tillage, spraying and harvesting. The ALAAM was classified into 6 levels from 0 (manual) to 5 (full automation) depending on the status of operator and autonomous system interventions for each item related to the automation of agricultural tasks such as straight-curve path driving, path-implement operation, operation-environmental awareness, error response, and task area planning. The core of the ALAAM classification is based on the relative roles between the operator and autonomous system for the automation of agricultural machines. The proposed ALAAM is expected to promote the establishment of a standard to classify the autonomous driving levels of self-propelled agricultural machinery.

• Current Photovoltaic Research
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• v.7 no.2
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• pp.46-50
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• 2019

The photovoltaic (PV) system consists of solar cells, solar modules, inverters and peripherals. The related evaluation and certification are proceeding as standards published by the IEC (International Electrotechnical Commission) TC (Technical Committee) 82. In particular, PV module is a component that requires stable durability over 20 years, and evaluation in various external environments is very important. Currently, IEC 61215-based standards are being tested, but temperature, humidity, wind and solar radiation conditions are not considered in all areas. For this reason, various types of defects may occur depending on the installation area of the same photovoltaic module. In particular, the domestic climate (South Korea) is moderate. The various test methods proposed by IEC 61215 are appropriate, excessive, or insufficient, depending on environmental condition. In this paper, we analyze the climate data collection for one year to understand the vulnerability of this test method of PV modules. Through this, we propose a test method for PV module suitable for domestic climatic conditions and also propose a technical consideration for installation and design of PV system.

• Journal of the Korean Society of Industry Convergence
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• v.26 no.4_2
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• pp.615-621
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• 2023

In this study, flow analysis of single, double, and triple filter systems of cylindrical structures was performed to analyze the flow characteristics of each filter. As a result of the flow analysis of the filter system, the number of filters and the pressure drop rate tend to be proportional to each other. It was found that the area passing through the inside of the filter had almost the same pressure. The maximum pressure drop rate of the triple filter system was about 14.9% for the forward-flow and about 12.4% for the reverse-flow. It was determined that the performance of the filter was stable within 20% of the allowable pressure drop rate of the filter system, which is the standard presented to the Korea Water Technology Certification Institute(KWTCI). In the future, a study on the decompression characteristics of the filter system according to the effect of the arrangement interval and filter density of the triple filter will be conducted.

• Journal of the Korean Society of Marine Environment & Safety
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• v.30 no.3
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• pp.263-274
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• 2024

The digitization of ship environments has increased the risk of cyberattacks on ships. The smartization and automation of ships are also likely to result in cyber threats. The International Maritime Organization (IMO) has discussed the establishment of regulations at the autonomous level and has revised existing agreements by dividing autonomous ships into four stages, where stages 1 and 2 are for sailors who are boarding ships while stages 3 and 4 are for those not boarding ships. In this study, the level of a smart ship was classified into LEVELs (LVs) 1 to 3 based on the autonomous levels specified by the IMO. Furthermore, a risk assessment for smart ships at various LVs in different risk scenarios was conducted The cyber threats and vulnerabilities of smart ships were analyzed by dividing them into administrative, physical, and technical security; and mitigation measures for each security area were derived. A total of 22 cyber threats were identified for the cyber asset (target system). We inferred that the higher the level of a smart ship, the greater the hyper connectivity and the remote access to operational technology systems; consequently, the greater the attack surface. Therefore, it is necessary to apply mitigation measures using technical security controls in environments with high-level smart ships.

• Journal of Fisheries and Marine Sciences Education
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• v.27 no.5
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• pp.1265-1272
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• 2015

This study aims at comparison and analyzing of marine officer license system for fishing vessels between South Korea and New Zealand. It is urgently required to establish Republic of Korea-New Zealand mutual certification system for marine officers who are on board ships within applicable area given that New Zealand will force foreign fishing vessels within New Zealand area to reflag from 2016 in accordance with the amendment of Fisheries Act. Secondly, to compare and analyze systems between two countries will contribute to the preparatory work related to ratification STCW-F convention as New Zealand already have completed law amendment to adapt the convention. Maritime law of New Zealand, Seafarers Act and Ship Personnel Act of Republic of Korea were compared and analyzed as references. The result showed that an improvement to corresponding level to the international convention and development of safety training by vessel type, and job descriptions according to the license class are needed to Republic of Korea system. Furthermore, it is suggested to prepare specialized training for deckhands as required in STCW-F convention and standard fishing vessel officer training record for designated institute of education. Therefore institutional complementarity and framework is required as it is expected that the nations of fishing in piscary demand to reflag Korean deep-sea fishing vessels or to ratify the STCW-F convention.

• Research in Community and Public Health Nursing
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• v.15 no.3
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• pp.376-384
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• 2004

Purpose: The CHP program has been evaluated as one of the most successful program in the public health area in Korea. The objects of this study were as follows: 1) to evaluate the job activities of the CHP program, using service contents analysis. 2) to figure out personal factors and the outcome of CHP's activities. Method: Data were collected by sending questionnaires to 130 subjects through the mail from May to December 2003. The response rate was 48.0%. The Data were analyzed by the SPSS WIN program with t test and Pearson correlation coefficient. In using these methods. independent variables are CHP's personal factors (age, experience, certification of specialty) and regional factors (geographical classification, aged population, village workers, cooperation of community leaders, work-conditions), and a dependent variable is the outcome of CHP's job activities. Result: The results of t test analysis show that regional differences between factors are influential in the welfare service, the routine job, and the consultation. As a whole, this is shown that CHPs represent experience, the number of village workers and CHPs living condition of work and most of the categories of jobs that influenced over statistical meaning of differences (t=2.417, p=1.043, t=6.123, p=.004, t=4.309, p=.000). There is a significant positive relation between the routine job and the consultation(r=.455, p=.000), the consultation and the education(r=.461, p=.000). Conclusion: Finally, according to the results of this study, the CHP program should be developed and continue to meet the basic health care needs of the residents in accordance with the philosophy of their own primary health care.

• Journal of Korean Society of Forest Science
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• v.103 no.4
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• pp.696-702
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• 2014

This study was conducted to provide resonable price of timber that come out from certified forests for sustainable forest management. To accomplish this study objectives, we analyzed compound interest method, willingness to pay (WTP) and price sensitivity measurement (PSM) when buying certified pulp. In case of compound interest method, we used prime cost by average price per ha of each area (Hongcheon, Inje, Shinnam) and unit price that add up the pulp price and investment costs. Interest rate reflects 2 to 6% and investment period apply to 5 years. WTP and PSM data were collected from questionnaire survey. As a result, if apply to interest rate of 2% and investment period of 3 years, result values are quite similar to WTP of 5% and optimal pricing point of PSM. That also showed similar pattern in each area.

• The Journal of the Korea Contents Association
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• v.13 no.2
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• pp.175-187
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• 2013

Because of the governments policy to promise the cultural homesickness of citizens, national and public culture centers are under construction all over the country. The interest of watching plays are increasing. But the existing culture center's facilities operating in the construction of emphasized. It's made up of public officials in technical service, are having a hard time breaking their limits. In consequence, to solve these problems it will be done with people who have qualifications of stage art professional in the center. Productions raise a support system of the city and venues subject to theatre arts professionals as a way of solving these problems. These are the efficient ways to develop performance cultures of issues presented and the Busan area performing arts Activation Plan is proposed.

• Korean journal of food and cookery science
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• v.32 no.6
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• pp.745-753
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• 2016

Purpose: This study was conducted to provide basic data for human resources management of hospital foodservice employees by determining their job characteristics, job satisfaction, and organizational commitment according to recent hospital environment changes. Methods: Our survey was administered to 248 hospital foodservice employees in Busan area from September 1 to September 25, 2014. A total of 158 questionnaires were used for final analysis. Results: The mean score of job characteristics showed significantly difference by work experience (p<0.001), annual salary (p<0.01), and cooking certification (p<0.05). Job satisfaction had significantly difference by the age (p<0.05), annual salary (p<0.001), and turnover intention (p<0.001). Organizational commitment showed significantly (p<0.001) difference by age, work experience, and annual salary. There was positive correlation (p<0.001) between organizational commitment and job characteristics, job satisfaction. Organizational commitment had significantly positive correlation with skill variety (p<0.001), feedback (p<0.01), and task significance (p<0.001) of job characteristics, with work (p<0.001), pay (p<0.001), and co-workers (p<0.001) of job satisfaction. Job characteristics (${\beta}=0.249$, p<0.001) and job satisfaction (${\beta}=0.380$, p<0.001) had positive influences on the organizational commitment(p<0.001). In sub factors of job satisfaction, work (${\beta}=0.291$, p<0.001) and pay (${\beta}=0.252$, p<0.01) had positive influences on organizational commitment. Conclusion: To develop the organizational commitment, hospital managers need to reinforce responsibility and fulfillment by job enrichment and to consider increasing salaries to get a higher satisfaction from foodservice employees.