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Behavior of the herbicide metolachlor in carps (제초제 metolachlor의 잉어체내 행적)

  • Kyung, Kee-Sung;Kim, Jin-Wha;Lee, Byung-Moo;Oh, Byung-Youl;Jeong, Young-Ho;Lee, Jae-Koo
    • The Korean Journal of Pesticide Science
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    • v.3 no.2
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    • pp.54-59
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    • 1999
  • In order to investigate the behavior of the herbicide metolachlor [2-chloro-6'-ethyl-N-(2-methoxy-1-methylethyl)aceto-O-toluidide] in fish, carps (Cyprinus carpio L.) were exposed to the herbicide at $LC_{10}$(1.93 mg/L) for 4 days. Metolachlor dissolved in water was absorbed rapidly into carps to mark the maximum concentration 6 hours after exposure. The amounts of the $^{14}C$-metolachlor and its metabolites absorbed in gall were much higher than those in the other parts, strongly suggesting that biliary excretion involving enterohepatic recirculation could be an important route for the elimination of metolachlor. The $^{14}C$-radioactivity distributed into aqueous phase fraction in test water and in carp extract was increased in time-dependent manner. Extraction rate of $^{14}C$ absorbed in carp tissues was decreased remarkably up to 6 hours after exposure, suggesting that the possible polar metabolites of metolachlor were transformed into the conjugates to form non-extractable bound residues.

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The Effect of Policy Rate Adjustments in US on the Korean Bond (미국 연방정책금리 조정효과가 국내 국고채시장에 미치는 영향)

  • Park, Jae-Hwan;Kim, Chun-Kyu
    • The Journal of the Korea Contents Association
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    • v.13 no.9
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    • pp.344-354
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    • 2013
  • The objective of this study is to investigate the effects of FRB's policy rate adjustments on the 10 years Korea Treasury Bond (KTB) market. Our results are summarized as follows. First, it is found that the FRB's policy rate adjustments are statistically significant positive impact on the 10 years KTB yield. Based on projection, the 10bp increases in FRB's policy rate generates 7bp higher in 10 years KTB yield. Second, the result from after the Lehman bankruptcy in '08 is found to be statistically significant, while that of before financial crisis is not. Third, the variable, in which consistent with yield difference between the 10 years UTB(US Treasury Bond) and the 10 years KTB, is found that is statistically significant positive impact in 1% significance level. And also given that Brunner(2000) exhibited that the Federal Fund Rate innovations are found to impact on other economic variables through the impulse response, the 10 years KTB yield is found to respond to innovation in the Federal Fund Rate up to about 12 months.

A study on the risks of terrorism raids in domestic occurring through of the Islamic State of IS terrorist groups (IS테러단체의 공습확대에 따른 자국 내 테러발생 위험성에 관한 연구)

  • Oh, Sei-Youen;Yun, Gyeng-Hui
    • Korean Security Journal
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    • no.42
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    • pp.277-308
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    • 2015
  • Recently the Japanese hostage crisis with Syria, the stake of the pilots IS of the terror group's affiliates like Kim incident occurred while urinarado IS not an exception anymore in connection with terrorism will not be able to do. In addition, particularly against terrorist groups worldwide, IS being a hero has been marginalized and wants uncritical drugs aimed at teens, such as dialog or game IS through SNS joined nationals as well as other countries, while recommending domestic complaints until the people power or luck, put the older brother can sign up for any terror group IS the terrorist group's terrorist acts while making the environment a national mark by foreigners or immigrants can be caused by the situation. Therefore, in this study, this IS serious for the terrorist acts of the terrorist group, IS due to the expansion of the domestic terrorist group caused the terror raids of about the dangers of foreign countries to review the case, and the incident has sought ways to prevent and respond to the rapporteur. The result IS due to the expansion of the domestic terrorist group caused the terror raids of the dangers of sex exists and that causes a response to the implements are as follows. First of all, IS brokering for the site of the terrorist group's approach to counter-terrorism Act will be a, and the next, each agency and terror for the information exchange and cooperation and serves as a reexamination of terror occurred through the quick and appropriate measures should be the language. Finally, the duties related to terrorism for teens, especially education and strengthen the safety program development and against terrorism should be carried out.

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A TransGate System for Convenient Wireless Internet Contents Generation (편리한 무선인터넷 컨텐츠 생성을 위한 TransGate 시스템)

  • Ryu Dong-Yeop;Han Seung-Hyun;Lim Young-Whan
    • Journal of Internet Computing and Services
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    • v.7 no.2
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    • pp.37-52
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    • 2006
  • A mobile device like ceil phone is the necessity of modern people, of ich con be easily connected to a wireless internet through such a mobile device. The demand for a wireless data communication is growing rapidly. However, agencies have not yet completed standardization of a markup language. Due to the development of the Mobile Device, agencies in this field have provided different data formats with each Mobile Device Platform. Traditionally, contents is hand-tailored to suit the target device. A key problem is that the characteristics and capabilities of the mobile device are too diverse to service the most suitable mobile contents. Because of these problems, the need for a re-usable document description language increases. In this paper, we defined Template file that is common data to service mobile devices. We proposed a method that could be an effective wireless web service though design and the implementation of the Call manager & the XSL Generator. In the methodology, when requesting a wireless internet service, a mobile device finds out markup language and a hardware specification of the mobile device through the Call Manager component supports. The XSL Generator component creates the XSL file dynamically that is the most suitable to a device. Finally, contents is serviced to each device by XSLT. It can generate a wireless page more easily by reusing the existing web contents through such course. Therefore, it can save the time and expense for generating a wireless page.

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Vitrification of Highly Active Liquid Waste(II) (The thermal decomposition of HARVEST feed slurries and the characterization of the product)

  • Chun, K.S.;Morris, J.B.
    • Nuclear Engineering and Technology
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    • v.11 no.3
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    • pp.203-212
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    • 1979
  • The thermal decomposition of simulated Magnox highly active waste and of HARVEST feed slurries (SW and SG) which include tile glass forming chemicals has been studied. The waste and the slurries are almost completely calcined by 500-55$0^{\circ}C$. The colour of the solids from the slurries varies little until about 90$0^{\circ}C$ when it darkens considerably. The slurries begin to vitrify at this temperature and are completely vitrified at 1000-105$0^{\circ}C$. On the other hand. the sulphate impurity in SN slurry causes a yellow phase to separate above 75$0^{\circ}C$. The density of the intermediate solids is fairly low until 650$^{\circ}$-$700^{\circ}C$ is reached. This temperature seems to mark the onset of fluxing as tile density rises quickly to 2g/㎤ at 700$^{\circ}$ -80$0^{\circ}C$. The strengh of the solids decreases with temperature up to 50$0^{\circ}C$, and then rises as the solids begin to sinter. Below 50$0^{\circ}C$ the SN solids are the stronger. suggesting that the impurity renders this silica more reactive.

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A Study of Simplifying Call Numbers with Collection Codes at Children's Libraries (컬렉션코드를 활용한 어린이도서관 청구기호 간략화 방안에 관한 연구)

  • Chung, Yeon-Kyoung;Lee, Mi-Hwa
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.20 no.1
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    • pp.23-38
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    • 2009
  • The purpose of this study was to suggest the collection codes and simplification of call numbers for children's easy access to the children's materials. The classification schemes, author tables, expansion of classification schemes, collections codes, classification numbers used in domestic and foreign children's libraries were surveyed through questionnaires and interviewing with librarians. As a result, in foreign children's libraries, it was common practice to shelve children's materials separately into various collections and sub-collections, to mark the spine with collection code and the lead characters of the author's last name, and not to stick with their classification scheme when it comes to highly circulated children's materials such as fiction, picture book, biographies and so on. Also, in domestic children's libraries, it was found that a collection code was used a few and each call number was almost assigned by KDC number. Therefore, it was suggested that the types and codes of collection and sub-collection were divided as non-fiction, fiction, fiction/mystery, fiction/science fiction, picture book, cartoon, language, folks and fairy tales, biographies, legend, concept book, holiday, award, dinosaur, insect, DIY, transportation, tall book, pop-up, story book, board book, reference, magazine, series, new book, video, and audio and were easily expanded by combining age tables or fiction genre. Also, new simplifying methods of building call numbers with collection codes were suggested.

A Study on the Movement Distribution of Common Grey Mullet, Mugil cephalus in Funnel Net Fishing Ground of the Yeosu Coastal Sea (여수 연안 승망 어장에서 숭어의 이동 분포에 관한 연구)

  • Kim, Dong-Soo;Joo, Chan-Soon;Park, Ju-Sam
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.41 no.1
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    • pp.1-8
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    • 2005
  • In order to find out the environmental factors influencing movement of common grey mullet, Mugil cephalus in funnel net fishing ground of the Dolsan-do, Yeosu southern sea area, the oceanographic factor such as the water temperature, isobath and tidal current were observed respectively, the water temperature was compared with the amount of common grey mullet caught by funnel net. Also, to investigate the movement direction of common grey mullet in same sea area, 160 common grey mullets of body length 22 to 51cm caught at funnel nets of the Dolsan-do southern sea area were marked and then released at 5 positions in 5 times. The results obtained are summarized as follows : 1. The water temperature at the funnel net fishing ground of Dolsan-do in 2002 was ranged from 6.9 to 27.4$^{\circ}C$. The water temperature was displayed a maximum value in August to increase from March and a minimum value in February of the ensuing year to decrease from September. The catches of gray mullet caught by funnel net were generally abundant from March to September, but decreased sharply from October. The optimum range of water temperature for the funnel nets fishing was situated between 15.0 to 25.0$^{\circ}C$. 2. The isobath from 6m to 13m in coast sea set up funnel nets were densely distributed and the depth more than 14m of isobath were widely spreaded to the open sea at Dolsan-do southern sea area. 3. The tidal current of the coast sea set up funnel nets flowed southward and northward along the coast ato ebb and flood tide respectively. The direction of tidal current to the open sea was southeast at ebb tide with the mean speed 43cm/sec, but northwest at flood with the mean speed 25cm/sec. 4. The recapture rate through the experiment duration showed 9.4%. The recapture rate in Gyedong area was very high value with 33.3% as compared with others. The movement of common grey mullet in Dolsan-do southern sea area trended toward a inner bay and north bound mainly.

Petrological Characteristics and Origin of Volcaniclasts within the Massive Tuff Breccia Formation from Dokdo Island, Korea (독도 괴상 응회질 각력암층에서 나타나는 화산암편의 암석학적 특성과 기원)

  • Shim, Sung-Ho;Im, Ji-Hyeon;Jang, Yun-Deuk;Choo, Chang-Oh;Park, Byeong-Jun;Kim, Jung-Hun
    • The Journal of the Petrological Society of Korea
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    • v.19 no.2
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    • pp.141-156
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    • 2010
  • Dokdo Island, Korea, is located in the East Sea belonging to back arc basin. In this study we examined petrology and geochemistry of massive tuffaceous breccia (MTB) from Dongdo (Eastern islet) and Seodo(Western islet), the two largest islands of Dokdo. Field studies and chemical analysis distinguish the MTB in Dongdo and Seodo. The Dongdo MTB (DMTB) is exposed up to 50 m on the ocean cliff and it has dominant basalt and trachybasalt with moderate amount of trachyte and scoria. On the other hand, Seodo MTB (SMTB), which is preserved between trachyte dike and trachyandesite, is composed of roughly equal amounts of basalt, trachybasalt and trachyte. The location of the islets were related to the source vent having in contact with underlying trachyte lava and differential pyroclastic deposits made them different characteristics. According to trace element analysis of trachytic volcanic clasts, the Ba concentration ranges from 66 to 103 ppm and Sr varies from 44 to 56 ppm in DMTB. However, Br and Sr in SMTB correspondingly showed relatively wide ranges: Br 785-1259 ppm and Sr 466-1230 ppm. These differential trends between DMTB and SMTB, along with the difference in P and Ti, indicate that the crystallization of alkali feldspar, feldspathoid, biotite, apatite and titanium took place differently. Nevertheless, DMTB and SMTB are similar in REE patterns and they are correspondingly characterized by high LREE, low HREE and similar $(La/Yb)_N$ values with 23.9-40.2 in DMTB and 27.4-32.9 in SMTB. These patterns suggest that Dongdo and Seodo might be originated from coeval magma suites. Dokdo island shows high concentrations of Ba, K and Rb. These signatures mark a result attributed to the mantle upwelling because the magma derived from the asthenosphere was metasomatized with subduction-related fluids.

A Study OR Investigation of the Factors having Affect on Junior Highschool Boys관 Practice of Health Care (중학교 남학생들의 건강관리 실천과 이에 영향을 미치는 요인 조사 연구)

  • 기경숙
    • Journal of Korean Academy of Nursing
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    • v.15 no.1
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    • pp.59-75
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    • 1985
  • Accepting the health as the fundamental human right, the nation and society came to admit the duty to give it to all the people. Korean government is expanding the Primary Health Care as one of the policies for developing the people's health by the lead of community. Like this current situation the School Health Service which is the center of community Health Service schould be active to keep, promote and maintain the health of students and teachers. This investigation was attempted to help to establish the basis of the Health Education Program which would perform the health education efficiently and bring the reforming of student's health control, by measuring the degree of junior high school student's practice concerning health care and con-firming the relationship of knowledge, concern and level of health. The subjects for this study were made up 296 boys at the third grade in a school, located in Seoul. The tool for this study was questionaire. Data were collected for five days, September 22∼26, 1983. The investigators explained the students how to answer the questions of the survey questionaire and then collected the survey cards immediately. The data were analyzed by means of percentages, Pearson Correlation Coefficient and Stepwise Multiple Regression. The results of this study are as follows. 1. The subjects' reaction to the practice concerning Health Care; According to the average proportion of practice concerning health care, subjects' practice in the aspect of Infectious Disease Care is the highest 82.4% and they showed their practice in the aspect of the accident prevention by 77.5% and in the aspect of mental health by 74.8%. Their practice in the aspect of personal hygiene and daily lifehabit is the lowest 71.2%. 2. Health Knowledge; The whole mark distribution of health knowledge is ranged from the lowest 4 point to the highest, 30 point, therefore point range is 26.0. The Average point is 16.58. 11.2% of students solved more than two thirds of personal knowledge levels. 81.4% of students did more than one third of them. 7.415 of students did less than one third of them. 3. Health Concern; The Students of the average 3.99 point respond positively to the question about the health concern, ‘They think health is more important than money’, this is the highest rate. The students of the average 2.78 respond“when they are sick, they enter the appointed hospital where they own choose”, while it is the lowest. 4. Subjects' response to the health level are at follow: Very healthy 26.0%, healthy 47.0%, less healthy 10.5%, 34.9% of them have ever been sick within two weeks, the number of symptoms they reported amount to 114 and the number of cases poi one person is 0.35. 5. The hypotheses test about the practice concerning health care and the factor which effect on it. 1) The main first hypothesis:“The more knowledge of health the subjects have, the better they practice health care.”was accepted. (r=0.1582, p <0.05) 2) The minor first hypothesis:“The more interest in health subjects have, the better they practice”was accepted. (r=0.4354, p <0.001) 3) The minor second hypothesis;“The healthier subjects are, the better they practice health care”was accepted. (r=0.1069, p<0.05) As other test, partical correlation test is performed in other refine whether health knowledge, a fact influencing the students practice concerning health care, is associated with the practice after controlling the third variables. First, after controlling health concern, the correlation of health knowledge and practice concerning health care was kept. (r=0.1347, p <0.005) Second, after controlling health level, the correlation of health knowledge and practice concerning health care was kept. (r=0.1526, p <0.005) And finally, after controlling economic state, the correlation of health knowledge and practice concern-ing health care was kept. (r=0.1413, p <0.05) Additionally Stepwise Multiple Regression between practice concerning health care and variables. 1.6591 of compliance was explained with the know-ledge (F=5.584, p <0.05), 20.0% of compliance was explained with the health concern added to knowledge. (F=63,213, p <0.005) As the above, health knowledge obviously have effects on the practice about the health care. But, contrary to researcher's expectation, health concern has more affects than health knowledge. Therefore, we must grope the plan to enhance health concern through the regular curriculum and systematic health education for students. Besides, we must study further on, to find the factors which have affect on the practice concerning health care.

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A Study on Outplacement Countermeasure and Retention Level Examination Analysis about Outplacement Competency of Special Security Government Official (특정직 경호공무원의 전직역량에 대한 보유수준 분석 및 전직지원방안 연구)

  • Kim, Beom-Seok
    • Korean Security Journal
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    • no.33
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    • pp.51-80
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    • 2012
  • This study is to summarize main contents which was mentioned by Beomseok Kim' doctoral dissertation. The purpose of this study focuses on presenting the outplacement countermeasure and retention level examination analysis about outplacement competency of special security government official through implement of questionnaire method. The questionnaire for retention level examination including four groups of outplacement competency and twenty subcategories was implemented in the object of six hundered persons relevant to outplacement more than forty age and five grade administration official of special security government officials, who have outplacement experiences as outplacement successors, outplacement losers, and outplacement expectants, in order to achieve this research purpose effectively. The questionnaire examination items are four groups of outplacement competency and twenty subcategories which are the group of knowledge competency & four subcategories including expert knowledge, outplacement knowledge, self comprehension, and organization comprehension, the group of skill competency & nine subcategories including job skill competency, job performance skill, problem-solving skill, reforming skill, communication skill, organization management skill, crisis management skill, career development skill, and human network application skill, the group of attitude-emotion competency & seven subcategories including positive attitude, active attitude, responsibility, professionalism, devoting-sacrificing attitude, affinity, and self-controlling ability, and the group of value-ethics competency & two subcategories including ethical consciousness and morality. The respondents highly regard twenty-two outplacement competency and they consider themselves well-qualified for the subcategories valued over 4.0 such as the professional knowledge, active attitude, responsibility, ethics and morality while they mark the other subcategories below average still need to be improved. Thus, the following is suggestions for successful outplacement. First, individual effort is essential to strengthen their capabilities based on accurate self evaluation, for which the awareness and concept need to be redefined to help them face up to the reality by readjusting career goal to a realistic level. Second, active career development plan to improve shortcoming in terms of outplacement competency is required. Third, it is necessary to establish the infrastructure related to outplacement training such as ON-OFF Line training system and facilities for learning to reinforce user-oriented outplacement training as a regular training course before during after the retirement.

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