• Korean Journal of Environment and Ecology
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• v.35 no.2
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• pp.193-203
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• 2021

As endangered species are gradually increasing due to land development by humans, it is essential to secure sufficient protected areas (PAs) proactively. Therefore, this study checked priority conservation areas to select candidate PAs when considering the impact of land development. We determined the conservation priorities by analyzing four scenarios based on existing conservation areas and reflecting the development impact using MARXAN, the decision-making support software for the conservation plan. The development impact was derived using the developed area ratio, population density, road network system, and traffic volume. The conservation areas of endangered species were derived using the data of the appearance points of birds, mammals, and herptiles from the 3rd National Ecosystem Survey. These two factors were used as input data to map conservation priority areas with the machine learning-based optimization methodology. The result identified many non-PAs areas that were expected to play an important role conserving endangered species. When considering the land development impact, it was found that the areas with priority for conservation were fragmented. Even when both the development impact and existing PAs were considered, the priority was higher in areas from the current PAs because many road developments had already been completed around the current PAs. Therefore, it is necessary to consider areas other than the current PAs to protect endangered species and seek alternative measures to fragmented conservation priority areas.

• Parasites, Hosts and Diseases
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• v.51 no.6
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• pp.663-667
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• 2013

Free-grazing ducks play a major role in the rural economy of Eastern Asia in the form of egg and meat production. In Thailand, the geographical location, tropical climate conditions and wetland areas of the country are suitable for their husbandry. These environmental factors also favor growth, multiplication, development, survival, and spread of duck parasites. In this study, a total of 90 free-grazing ducks from northern, central, and northeastern regions of Thailand were examined for intestinal helminth parasites, with special emphasis on zoonotic echinostomes. Of these, 51 (56.7%) were infected by one or more species of zoonotic echinostomes, Echinostoma revolutum, Echinoparyphium recurvatum, and Hypoderaeum conoideum. Echinostomes found were identified using morphological criteria when possible. ITS2 sequences were used to identify juvenile and incomplete worms. The prevalence of infection was relatively high in each region, namely, north, central, and northeast region was 63.2%, 54.5%, and 55.3%, respectively. The intensity of infection ranged up to 49 worms/infected duck. Free-grazing ducks clearly play an important role in the life cycle maintenance, spread, and transmission of these medically important echinostomes in Thailand.

• Korean Journal of Child Studies
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• v.2
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• pp.41-53
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• 1981

The purpose of this study was to find out conservation concept acquisition in children of pre-operational and concrete periods. The data in this study were obtained through experimental methods with 62 children(28 males and 34 females) of 3-11 ages in Korean rural areas. The Piagetian instruments devised by Gelman were used for the study ; length, liquid, quantity, mass, and volume conservation tasks. Percentile and $x^2$-test were applied for the statistical analysis of data: and the results of the experiment are as follows: 1) Most children aged 3-9 years did not appear to understand that the length of sticks stayed the same regardless of position. 2) In liquid quantity conservation, children centered their attentions on one aspect ; juice level or number of container. Their conservation concept was developed correlating with ages. 3) In the experiment of mass conservation by using play dough, only 7.1% of children of pre-operational period and 47.1% of concrete period affirmed that the amounts of play dough were same after changed shape. 4) In volume task, 29.4% children aged 7 to 11 years admitted to conservation. 5) It is found that girls acquired length conservation earlier than boys, while there was no significant difference between boys and girls in other conservation tasks.

• Journal of the Korean Society for Library and Information Science
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• v.22
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• pp.1-27
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• 1992

Librarians long ago proclaimed themselves professionals. Until recently, however, librarians and information professionals gave very little thought to professional ethics, which have corne to play an increasingly important role in all areas in modern society. They have been stimulated to consider their specific domain within an ethical context now. Professional norms express obligations which include prescribing standards, principles of responsibilities, and rules of duties. Professional codes attempt to formulate the norms of professional ethics and are the basis for disciplinary measures of various kinds. This paper discusses professional properties and characteristics of libarianship with a special reference to the code of professional ethics. The codes of ethics of the American Library Association, the Library Association, and of the Japanese Library Association have been reviewed and compared. The arguments on the enforcibility of the professional codes of ethics, therefore, on their effectiveness have been discussed. Author concludes that, despite some doubts on the practical effectiveness of the ethics code expressed by a number of scholars, a code of ethics is very much required in the information professions. Properly disseminated, a code would enhance the status and standing of the profession by demonstrating concerns for the maintenance of the highest possible level of standards of professional services. It would also play an important role in raising consciousness of the clients by communicating the value of the works.

• Journal of the Korean Home Economics Association
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• v.42 no.11
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• pp.61-84
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• 2004

The purpose of this study is to present foundational data to promote the cultural welfare status of youth. The actual condition of the youth's cultural welfare was investigated by investigating the degree of youth's cultural welfare satisfaction and needs by regional groups. A total of 1486 questionnaires were used for the final data analysis. The analysis revealed the following results. 1. Actual conditions of adolescents cultural welfare. 1) Among various cultural activities, adolescents find leisure and social activity, artistic, mass media and video-media activities very boring and one-sided, Instead, they have greater interest in computer- and Internet-related activities, such as getting and sharing information and communication. 2) While adolescents living in urban areas benefit from well developed social infra-structure, those living in rural areas seldom take advantage of it. 3) The obstacles against cultural welfare of the youth can be categorized as: 'lack of money,' 'lack of time,' and 'lack of cultural facilities. ' In urban areas 'lack of time' becomes an issue, whereas in rural areas 'lack of money' and 'lack of cultual facilities' are important. 2. Degree of cultural welfare satisfaction of the youths. Youths generally appear either 'unsatisfied' or 'neutral' concerning their satisfaction degree about leisure and social activity parts, and art and play-activity paris. On the other hand, they appear 'neutral' concerning their satisfaction degree about computer- and Internet-related information and communication parts, and mass- and video-media activity parts. In addition, urban youths show a higher degree of satisfaction than rural youths. 3. What the youths need To improve their culture welfare status, they need a lot of supplements for cultural activity in the form of cultural infra-structure. Regarding the cultural infra-structure, rural youths need more than urban youths.

• Transactions of the Korean hydrogen and new energy society
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• v.27 no.4
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• pp.431-440
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• 2016

Electric or hydrogen energy source is expected to solve a various issues including energy security and exhaust pollution. However, it is required a lot of time and a variety of development to apply for commercialization. Therefore, it is needed to translation fuels between the future and the present. DME (Dimethyl Ether) can play a reduce exhaust emission from medium- to heavy-duty engines that are mostly used in commercial sector. It have applied to the DME fuel as a various alternative fuel including power generation in many countries. Especially, it is necessary to secure the energy of energy-poor areas that are widely distributed around the world. And Korea also has the energy-poor areas due to geographical characteristics. These areas has been covered by their own energy through some small diesel generators, diesel boiler etc. If DME fuels are supplied in new demand such as rural sector with energy poor area, DME fuel will be available in the wider sector. In this study, it investigated performance and emission characteristics of agricultural generator and air heater using DME fuel. So the existing equipment of generator and air heater was modified to apply DME fuel. And combustion characteristics and properties of exhaust gas according to the contents of the DME fuel were evaluated. DME fuel showed a potential application in agricultural generator and air heater.

• Fire Science and Engineering
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• v.29 no.6
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• pp.109-118
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• 2015

Recently, three kinds of search robot prototypes were developed to assume the role of fire fighters for search and rescue missions in special disaster areas with high heat, smoke, toxic gases, or radioactivity. To accomplish search missions, these robots should be able to endure heat, overcome various obstacles, suppress fires, and see through dense smoke. This study investigated the heat resistance, practicality, and fire fighting capacity of these robots. The results show that the small and middle-sized robots were resistant to surrounding temperatures of $100{\sim}200^{\circ}C$, and the fire-fighter-riding robot could endure up to $500^{\circ}C$ for half an hour. The fire-fighter-riding robot showed excellent extinguishing performance on an A-10 class fire model, which was extinguished within 3 min. The robots also showed various capacities for overcoming obstacles and are expected to play an active role in various special disaster areas.

• Korean Journal of Head & Neck Oncology
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• v.14 no.2
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• pp.191-198
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• 1998

Objectives: We performed an immunohistochemical study to examine the place of neovascularization in the tumorigenic process of follicular thyroid carcinoma and to determine whether tumor angiogenic activity in follicular carcinoma plays a role in tumor aggression. Materials & Methods: We studied 63 follicular thyroid carcinomas and compared with 22 follicular adenomas. The areas of capsular invasion, vascular invasion and cellular atypism of the tumor were confimed on H & E stains. The paraffin embedded tissues were stained by the use of monoclonal antibodies against Ag CD34. Microvesseles were counted in the area of highest vascular density at 200 times magnification. The microvessel densities(MVD) were analized in relation to histologic type and location of the tumors. Results: There were 59 minimal invasive types and 4 widely invasive types of carcinoma. In the histologic specimens of carcinomas, capsular invasion was identified in all the cases, vascular invasion in 46 and cellular atypism in 24. Mean values of the MVDs of the minimal invasive carcinomas, the widely invasive carcinomas and the adenomas were $263.8{\pm}69.2,\;256.l{\pm}49.3\;and\;241.5{\pm}159.4$, respectively and there was no significant difference between each group. In follicular carcinomas, there was a regional difference of the MVDs. The areas of tumor showing cellular atypism and adjacent to or penetrating the capsule, in which represents the tumorigenic process of carcinoma, had a higher rate of vascularization, than other areas of the tumor(p<0.05). However, these features were not noted in the follicular adenomas. Conclusion: Although there was no significant difference of the MVD between follicular carcinomas and adenomas, there was a regional difference of the MVD within the carcinomas and the values were significantly higher in the more malignant areas, as indicated by cellular atypism and capsular invasion. Therefore, tumor angiogenic activity measured by MVD may play a role in tumor aggression in follicular thyroid carcinoma.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.2
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• pp.105-116
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• 2018

This study started by examining 24 newly-built elementary schools in Sejong City with regard to their present conditions of in-between space. After categorizing the space according to its spatial composition, 5 schools were selected and analyzed in relation to the current status and frequency of use of their in-between space. Among the (other schools, the analysis gave the following results: 1) There was much higher usage of the in-between space for rest/play than for learning, which suggested that more rest/play area and apparatus should be provided. 2) Piloti areas were preferred, and a greater number of activities took place in these places than in the adjoining open areas. 3) When the in-between space was combined with a passage (as in the case of E2 and E3), a separation must be provided in order not to interfere with the rest/play activities. 4) In planning the in-between space, priority should be given to activities over landscape purposes. 5) Diverse and easy access to the space must be planned, particularly as the main entrance is not directly connected to the space. Entry at the end of an adjacent building could be a possible solution.

• Korean Journal of Childcare and Education
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• v.10 no.6
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• pp.369-390
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• 2014

This study analyzed the educational contents related with child's human rights in a manual of the Nuri Curriculum for 5-year-olds based on the type and area of activity, 5 areas, and by life theme. The research results are as follows: First, the educational contents on child's human rights in activity type and area showed high frequency in the order of large and small group activity, child selected play activity, and outdoor activity, and among them, right to an education and right to play showed the highest frequency. Second, among the five categories, the area that conducts educational contents on child's human rights was the social relation category, and the area that showed the highest participation was the educational contents on human rights. On the other hand, the areas that were treated the least were physical activity and health. Third, the topic that treated the educational contents related with child's human rights was 'spring, summer, fall, winter,' and 'my family and I' treated educational contents on child's human rights in the lowest frequency. Also, whereas the right to education and right to play showed the highest frequency of educational contents on child's human rights among entire life themes, the educational contents on child's human rights of abuse and neglect(violence) were not treated at all in the entire life themes. Through the results of this study, it will be helpful in planning and deploying activities related with the child's human rights harmoniously, and intends to provide important basic data in organizing activities of human rights program linked with the elementary school. Furthermore, this study intended to provide basic information for developing a program of systematic child's human rights education for children in addition to the curriculum at a national level.