• Journal of the Korean Applied Science and Technology
• /
• v.25 no.3
• /
• pp.299-312
• /
• 2008

The fat of Tra and Basa catfish (Mekong Delta, Viet Nam) was evaluated for the first time as the potential feedstock for biodiesel production, due to its abundance, availability and cheap cost. The unsaturated fatty acid contents of Tra and Basa fat were 57.97% and 64.17%, respectively. Biodiesel was prepared from Tra and Basa fat by methanolysis reaction using alkali catalysts like sodium hydroxide and potassium hydroxide. Effects of various process parameters on biodiesel production, such as molar ratio of methanol to fat, catalyst concentration, temperature and time were investigated. As those results, the transesterification can be performed under moderate conditions, and the biodiesel yields were shown more than 90%. KOH catalyst was the best catalyst for biodiesel production from both Basa and Tra fat. As the feedstock aspect, Basa fat was indicated more efficiency than that of Tra fat. The maximum yield could be achieved by the transesterification from Basa fat with 5:1 molar ratio of methanol to fat, 0.8% KOH catalyst, $50^{\circ}C$, and 50 min. For Tra fat, the optimal condition were at 6:1 molar ratio of methanol to fat, 0.8% KOH catalyst, $50^{\circ}C$, and 45 min. Nowadays, due to cheaper cost and abundance, Tra fat is a promised resource for cheap biodiesel production in Viet Nam.

• Journal of the Korea Convergence Society
• /
• v.8 no.7
• /
• pp.39-46
• /
• 2017

Dongguan City of Guangdong province, one of the core areas of the Pearl River Delta, has also pursued economic development through the geographical advantage close to Hong Kong. In the early 1980s, small and medium-sized multinational corporations related to home appliances industry from Hong Kong invested to the Dongguan area and set up a production factory. In the mid-1990s, as Taiwanese PC manufacturers invested, local industrial clusters have developed in Dongguan with core of the IT, PC components and electronic industries. The case of the IT industrial cluster in Dongguan is a typical example of the development of Chinese manufacturing industry after the reform of China. This paper focused on the coupling strategy case of Dongguan City industrial cluster in Guangdong province, and theoretically compared the endogenous growth factor analysis(NMID) of regional industrial development with the regional differentiation of industry based on external linkage with global production network(GPN).

• Land and Housing Review
• /
• v.6 no.1
• /
• pp.1-9
• /
• 2015

This study is significant by suggesting the plan of urban regeneration strategy, selection of vitalization area and build basic DB for establishing a plan of urban regeneration vitalization and draw measures to evaluate and monitor as urban regeneration project is promoted in earnest. For the process of study, basic DB and evaluation monitoring index were examined based on collaboration proposal of 13 leading areas and (the agenda of) the plan of urban regeneration vitalization in 4 areas(Seoul, Changwon, Busan, Yeongju). This study can be concluded as follows; First, general information system which can support regeneration strategy vitalization plans for smooth promotion of the project and manage regeneration vitalization project and all kinds of city maintenance projects systematically are necessary. Second, monitoring of regeneration project should be firstly institutionalized. thrid, it's necessary to secure that city or county foundational management plan and the relations during the establishment of strategic vitalization plan. Finally, it's necessary to introduce and evaluate modularized plan suitable for Bottom-up regeneration project.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.37 no.6
• /
• pp.57-65
• /
• 2010

Physical activity of the people has decreased due to a sedentary lifestyle according to developing the economy throughout the world. It is thought to increase the risk of chronic diseases, including obesity, diabetes, etc. People are interested in walking, which is an easy activity to engage in as an antidote to chronic diseases. The aim of this study is to increase the diminishing physical activity of modem society by inducing walking as part of everyday life through building a walking-based activity-friendly city where people can live merrily, safely and pleasantly. For this purpose, this study conducted a satisfaction survey to dwellers of Jinhae on the physical pedestrian environments which affect determining walking participation and intentions of people, and also provided a valid model to evaluate the effects of the physical environmental factors on walking satisfaction using factor analysis and multiple linear regression analysis. The results are summarized as follows. The 18 variables of the physical pedestrian environments were selected based on pre-literature reviews. The results of the satisfaction surveys showed that the satisfaction of crossing aids in segments was highest, while the building feature was the lowest. Factor analysis was run through a two-step process. The first analysis was conducted to examine the adequacy of this factor analysis on the selected 18 variables. As a result, two variables were removed and the remaining 16 variables were extracted to the four factors by second analysis. Each factor was named function of path, effect of traffic, amenity and safety based on the each factor's commonality. Each factor score of the extracted four factors was set as the independent variable, while the overall walking satisfaction was set as the dependent variable. Then, the multiple linear regression analysis was conducted and showed that all four factors had a positive influence on the overall satisfaction of walking, especially the 'function of path' and 'amenity' factors, followed by 'effect of traffic' and 'safety'. The results of this research will be used as foundational data for creating a walking-based activity-friendly city.

• (The) Research of the performance art and culture
• /
• no.37
• /
• pp.187-221
• /
• 2018

The style of performance to contemporary nongak is not fixed in a specific period of time, but in conjunction with the total change in society that has occurred during its long time from traditional society to the modern times. It is important to recognize that the traditional performance art forms that we see and feel today, including nongak, are constantly interacting with the times and are a change in the design that has been shaped in the past. Now, we must get rid of the negative idea that there is some fixed prototype in Nongak. Also, the value and the need for preservation of current Nongak should not be evaluated according to the ' pure genealogy of village descent, ' which was possible only in villages with small population movements long ago. If can get rid of the stereotypes, can greatly expand the view that we read the values of a certain Nongak. Looking away from a few of these traditional fixed perceptions can significantly broaden the view of reading the winning values of some farmers ' songs. In this regard, this report determined the performing style and nature of Changwon's Toichon-noangak through a structural analysis of the Toichon-noangak in contemporary, and discussed the significance of the transmittion of Toichon-noangak. Changwon Toichon Nongak started out as an even-present ritual performance based on the religious nature of the village community and actively exchanged with the economic, social and cultural foundations of the Republic of Korea, which began to accumulate in the modern changes. Generally, the performance style of village Nongak has a combination of characteristics according to the ritual, Dure(collective labor), entertainment, and these three functions. Toichon Nongak is also a village Nongak style and in which of ritual nongak and village entertainment nongak are connected in parallel as one in the big total structure. The origin, background, purpose, and style of towing of Toichon noangak demonstrates that the Toichon noangak is originally ceremonial noangak derived from a prayer style of Dongje. Then, various factors influences are interacting with Toichon noangak within the orbit of modern society, such a style of playing, popular nongak, is believed to have undergone an extended change. Overall, Toichon nongak performance style can be called nongak, which maintains traditional customs and it also has the changed characteristics according to the times of village society.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.25 no.1
• /
• pp.28-43
• /
• 2022

This study classified UAV image-based physical spatial types for parks in urban areas of Changwon City and analyzed thermal comfort characteristics according to physical spatial types by comparing them with ENVI-met thermal comfort results. Physical spatial types were classified into four types according to UAV-based NDVI and SVF characteristics. As a result of ENVI-met thermal comfort, the T_MRT difference between the tree-dense area and other areas was up to 30℃ or more, and it was 19. 6℃ at 16:00, which was the largest during the afternoon. As a result of analyzing UAV-based physical spatial types and thermal comfort characteristics by time period, it was confirmed that the physical spatial types with high NDVI and high SVF showed a similar to thermal comfort change patterns by time when using UAV, and the physical spatial types with dense trees and artificial structures showed a low correlation to thermal comfort change patterns by time when using UAV. In conclusion, the possibility of identifying the distribution of thermal comfort based on UAV images was confirmed for the spatial type consisting of open and vegetation, and the area adjacent to the trees was found to be more thermally pleasant than the open area. Therefore, in the urban planning stage, it is necessary to create an open space in consideration of natural covering materials such as grass and trees, and when using artificial covering materials, it is judged that spatial planning should be done considering the proximity to trees and buildings. In the future, it is judged that it will be possible to quickly and accurately identify urban climate phenomena and establish urban planning considering thermal comfort through ground LIDAR and In-situ measurement-based UAV image correction.

• Korean journal of applied entomology
• /
• v.52 no.2
• /
• pp.129-132
• /
• 2013

In this study, we report three insect pest species of non-astringent persimmon, Pleuroptya chlorophanta, Acria ceramitis, and Choristoneura longicellana, for the first time from Korea. Larvae of these species were collected from an organic farming persimmon orchard in Changwon city, Gyeongnam province, and reared in the laboratory to be identified in 2012. Some information, such as collection records, hosts, simple morphological characteristics, and ecology were introduced for each species.

• Korean journal of applied entomology
• /
• v.42 no.3
• /
• pp.263-267
• /
• 2003

The distribution of Japanese gall-forming thrips, Ponticulothrips diospyrosi (Phlaeothripidae), has been spreading in persimmon orchards throughout southern part of Korea since it was first reported in 2000. Questionnaire was made up to survey from when the thrips occurred and how it spreaded out. Results showed that it occurred first in Korea at Jangsung county in Jeonnam province in 1995. It occurs at present at 26 cities and counties encompassing Ulsan metropolitan city and 6 provinces namely Chungbuk, Jeonbuk, Jeonnam, Gyeongbuk, Gyeongnam, and Jeju provinces. The most severely damaged areas are Changwon and Milyang cities. The total area of persimmon orchards which were damaged by the thrips reached up to 151 ha. It infested on astringent persimmon as well as sweet persimmom.

• Journal of Korean Clinical Nursing Research
• /
• v.18 no.3
• /
• pp.424-434
• /
• 2012

Purpose: The objective of this study was to investigate the effects of a group rehabilitation exercise program for stroke patients on their depression and motivation of rehabilitation. Methods: The design of this study was the nonequivalent control group non-synchronized quasi-experimental design. Data were collected from June through August in, 2012 in a rehabilitation hospital located in the C city. A total of 63 patients participated in the study [experimental group (n=32) and control group (n=31)]. The data were analyzed using $x^2-test$ and t-test. Results: The depression in the experimental group was lower than the control group (t=2.446, p=.017). The motivation of rehabilitation in the experimental group was higher than the control group (t=-4.90, p<0.001). Conclusion: Based on the results, the group rehabilitation exercise program for stroke patients is useful to decrease their depression and improve their motivation of rehabilitation. The program is considered to be an effective nursing intervention for decreasing the stroke patients' depression and improving their motivation of rehabilitation.

• Journal of Digital Convergence
• /
• v.16 no.8
• /
• pp.81-87
• /
• 2018

Recently, honorary retirement is spreading like a fashion among teachers. This was due to rapid environmental changes and stress. Therefore, in this study, we examined the relationship between teachers' stress and job exhaustion. The study was conducted for middle school teachers in Changwon city. The results of this study were as follows: First, job stress of middle school teachers affected emotional exhaustion. Second, job stress of middle school teachers had an effect on impersonation. Finally, job stress of secondary teachers did not affect the reduced individual achievement. The results of this study suggest that job stress of middle school teachers is closely related to job exhaustion. Therefore, it is urgent to improve the administrative simplification based on the analysis of the teacher 's stress factors and the immersion into the class.