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        검색결과 845

        201.
        2016.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Since a free-learning semester has been introduced to middle school curriculum, interest in career experience programs has increased. To respond to this new demand, we developed a continuous agriculture-related career experience program linked with STEAM (Science, Technology, Engineering, Arts, and Mathematics) education, and we examined the program’s effects on the job awareness of middle school students. The program was conducted from April 8, 2015 to June 24, 2015, and consisted of 12 classes. The direct experience subprogram was based on 13 different horticultural activities that reflect producing (nine programs), cooking (two programs), and sales (two programs) of horticultural produces. For the indirect experience subprogram, we preliminarily selected 10 representative agricultural jobs, and based on the keywords analyzed from 7 direct experience programs, we chose to introduce seven jobs to the students by videos and the three others by written material. We then investigated the effect of introductory videos on job interest, understanding, and preference by the students. We found that the student’s interest, understanding, and preference regarding each job were significantly improved when direct experience and video watching were combined. Career awareness was improved for gardener (47.0%), nursery grower (42.0%), rural extension official (31.1%), eco-friendly farm material developer (30.9%), agricultural research official (23.4%), plant doctor (19.8%), and agricultural wholesale distribution experts (9.3%). Conclusively, it is expected that career experience programs have the greatest effect on students when both interest in the job and participation on direct experiences are encouraged.
        4,000원
        202.
        2016.12 구독 인증기관 무료, 개인회원 유료
        Animal-Assisted Intervention programs and interventions with students are becoming promising field in school and therapeutic settings. Following this trend, Animal-Assisted Intervention (AAI) program was designed to help students adopt more easily to school life and to encourage them to keep healthy relationships with others. Accordingly, the purpose of this study was to identify the effects of animal-assisted intervention (AAI) on the middle school students' sociability and depression. The participants in this study, 8 middle school students residing in Seoul who were interested in animals and agreed to the research attended this program. This study was conducted two times a week for 6 weeks (a total of 12 times) with one main researcher and three research assistants. The major research tool was the test of sociability and depression and the statistical test being used for this study was Wilcoxon's signed ranks. The results were as follows. First, the study showed the significant effects of animal-assisted intervention on sociability for middle school students. There were significant differences in many aspects such as reliability, autonomy, sociability and compliance. Second, significant reductions in anxiety and depression were found after the introduction of animal-assisted intervention for students. Students who participated this program experienced a reduction in depression and stress to some degree. Also, they began to form much more positive friendships and followed school rules as well. Based on the above results, it can be seen that animal-assisted intervention program significantly has the positive effects on the social adaptability and depression of the middle school students. Therefore, this animal-assisted intervention should be considered as a positive program for emotional and psychological support for middle school students.
        4,500원
        203.
        2016.12 구독 인증기관 무료, 개인회원 유료
        이 연구는 재교육(학점은행제) 참여가 중년기의 삶의 질에 미치는 영향을 규명하는 것에 그 목적이 있 다. 이를 위해 첫째, 중년기 재교육(학점은행제) 참여자의 사회인구학적 특성을 알아보고, 둘째, 사회인구 학적 특성과 삶의 질의 관계를 살펴보았다. 셋째, 참여자의 사회인구학적 특성이 삶의 질에 어떠한 영향 을 미치는지 분석하였다. 넷째, 중년기의 재교육(학점은행제) 참여가 삶의 질에 미치는 영향을 보기 위해 참여자의 주관적 삶의 질을 사후 조사하였다. 연구의 자료는 경기도 내 전문대학교 1개교, 대학교 1개교, 서울소재 대학교 1개교의 재교육(학점은행제) 참여자 236명의 설문지를 분석에 사용하였다. 연구방법은 SPSS 18.0프로그램으로 중다회귀분석, 사후조사 등을 활용하였다. 평생교육을 통한 재교육 참여가 주관적 삶의 만족도에 미치는 영향을 분석한 주요 결과는 다음과 같다. 첫째, 주관적인 삶의 질에 대한 설문을 통해 자기효능감은 설문 참여자의 83.9%가 향상되었다고 응답하 여 .9%가 향상시켰다. 둘째, 행복감도 높아졌다는 응답자 201명으로 전체의 85.17%로 나타나 중년기 학점은행제 참여가 주관적 행복감을 향상시켰다. 셋째, 자존감의 경우 높아졌다는 응답이 202명으로 전 체의 85.6%로 나타나 중년기 학점은행제 참여가 주관적인 자존감을 향상시켰다. 넷째, 생활만족에 대한 질문에 높아졌다는 응답이 188명으로 전체의 79.7%를 차지하여 중년기 학점은행제 참여가 주관적 생활 만족도를 향상시켰다. 다섯째, 우울감을 묻는 질문에는 낮아졌다는 응답이 235명으로 전체의 99.6%를 차지하였다. 특히 우울감이 매우 낮아졌다는 응답이 전체의 91.53%가 응답하여, 주관적 우울감이 감소 되었다는 응답이 전체 응답자의 99.6%로 나타났다. 이와 같은 연구의 결과로 중년기의 신체적, 사회적, 정서적 변화의 특성에 재교육(학점은행제)이 긍정 적으로 작용하여 삶의 질이 향상되었다. 따라서 중년기의 우울이나 교육에 대한 욕구를 해결하는 방법으 로 학점은행제가 중요하다는 것을 확인 할 수 있었다. 따라서 이 연구는 중년기의 특징을 이해하고 고령 화와 정보사회에 대비한 재교육에 대한 다양한 평생교육 정책 및 제도 개발의 유용한 기초자료로 활용될 수 있을 것이다.
        6,900원
        204.
        2016.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study was to determine the health behaviors and nutritional status related to dyslipidemia in Korean middle-aged adults (between 50 and 64 years old) from the Korean National Health and Nutrition Examinations Survey data (2007~2010). A total of 4,721 subjects were analyzed in this study. The subjects were divided into three groups (normal, borderline, and dyslipidemia) according to serum lipid levels. Parameters included in this study were drinking and smoking, anthropometric parameters, blood and nutritional parameters. The latter parameter included food/nutrients intake. All data was adjusted by sex, region, education level, and age. General linear model and logistic regression model were used for statistical analysis. The dyslipidemia group was comprised of more men than women. By contrast, the borderline group was comprised of more women than men (p<0.001). No significant differences were observed for other general characteristics. There were more smokers and drinkers(drinking per time) in the dyslipidemia group (p<0.05). Anthropometric data showed significant difference, ie, height (p<0.05), weight, body mass index, waist circumference, percent body fat, and blood pressure were higher in the dyslipidemia group (p<0.001). Only blood urea nitrogen showed no significant difference among groups. The HbA1c (p<0.01), fasting blood glucose, GOT, GPT, creatinine levels were higher in the dyslipidemia group (p<0.001). So it is required for the management of obesity in dyslipidemia group. The dyslipidemia group ate less sea food (p<0.05). The nutrients intake of energy and protein, thiamin, riboflavin, niacin, calcium, phosphorus were lower in the dyslipidemia group (p<0.05). Therefore, to lower dyslipidemia prevalence rates, it is necessary to increase the intake of foods containing ω-3 fatty acids. We also suggest a meal management program and nutritional education to recognize the risk of dyslipidemia, especially for people such as the individual in the borderline and dyslipidemia study groups. Key words: dyslipidemia, Korean middle-aged adults, nutritional status, health behaviors
        4,200원
        206.
        2016.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study examined the reading passages of the National Assessment of Educational Achievement (NAEA) and middle school English textbooks in terms of their readability and lexical difficulty. The readability was measured by using Flesch-Kincaid Grade Level Index, while their lexical difficulty was measured in terms of STTR (standardized type-token ratio), frequency of tokens per type, and vocabulary frequency levels by using VocabProfile and Oxford WordSmith Tools 7.0. The results showed that there was a gap between the readability of the English textbooks and that of the NAEA conducted from 2012 to 2014, while the readability between the English textbooks and that of the 2015 NAEA reached a comparable level. However, the textbooks from one publisher showed substantively lower readability than those from the other publishers and the NAEA. Secondly, regarding vocabulary frequency levels, the words in 1K and 2K accounted for more than 90% of the textbooks and the NAEA, while the NAEA had a higher STTR and lower frequency of tokens per type than the textbooks. It suggests that the NAEA employed more various words with less repetition than the textbooks. Pedagogical implications are discussed.
        6,000원
        207.
        2016.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The objective of this study was to compare the differences between males and females in the mediating effects of academic failure tolerance on the impact of self-efficacy on game addiction among adolescents. The results are summarized as follows. First, in both men and women, self-regulation, one of sub-variables of self-efficacy, had negative effects on game addiction. Second, in men, both emotion and behavior had negative effects on game addiction, while, in women, only behaviour did so. Third, among sub-variables of self-efficacy, in males, self-regulation and task difficulty had positive effects on academic failure tolerance, while, in women, self-regulation, confidence, and task difficulty did so. Fourth, testing the mediating role of academic failure tolerance in the effect of self-efficacy on game addiction showed that there was a partial mediating effect among males, while there was a perfect mediating effect among females. All this implies that there is a need to develop programs that help students maintain positive emotions and behaviors even after they have experienced academic failure, considering the importance of academic failure tolerance for students.
        4,000원
        208.
        2016.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구의 목적은 공동생성적 대화가 인식론적 측면에서 학습자의 과학 모델에 관한 이해와, 실행 과정의 측면에서 모델 구성에 미치는 영향을 살펴보는 것이다. 서울 소재 여자중학교 1학년 49명의 학생들에게 총 5차시 모델 구성 수업을 실시한 후 공동생성적 대화에 참여한 2개 조(8명)의 학생들과 참여하지 않은 2개 조(9명)의 학생들의 모델에 관한 이해와 모델 구성을 비교하였다. 모델에 관한 이해는 Upmeier zu Belzen and Krüger (2010)의 분석틀을 사용하였고, 모델 구성 과정은 Baek et al. (2011)의 분석틀을 수정 및 보완하여 분석하였다. 그 결과 전반적으로 공동생성적 대화에 참여한 학생들은 그렇지 않은 학생보다 과학적 모델에 관한 이해와 모델 구성 수준이 높게 나타났다. 공동생성적 대화에 참여한 조의 학생들은 모델을 새로운 현상을 설명할 수 있는 가설로 인식하였지만, 참여하지 않은 조의 학생들 은 모델을 현상을 이해하는 수단으로 인식하였다. 본 연구는 학생들의 모델 구성 과정을 측정하는 분석틀을 마련하여 학교 현장에 유용하게 사용할 수 있게 하였다. 또한 새로운 학습 방법으로써 공동생성적 대화를 모델 구성 수업에 적용했다는 점에서 의의가 있다.
        6,400원
        209.
        2016.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        예이츠는 『오이디푸스 왕』에서 중용지혜의 원형을 제시했다. 이러한 그 의 중용사상은 자사의 『중용』과 아리스토텔레스의 『니코마코스 윤리학』에 설명된 중용사상과 유사성이 있었다. 그는 주관적 원추와 객관적 원추가 달의 상들에서 순환하 면서 중용을 완성하는 것을 가이어의 순환으로 설명하였다. 자사는 중과 용이 상호 조 화를 이루면서 중용을 성취하였고, 아리스토텔레스는 양극단의 중간지점을 중용의 상 태로 설명하였다. 이 중용사상은 오이디푸스 왕과 이오카스테의 삶에 그 보편적인 전 형이 재현되었다. 그들은 자신들의 삶에 중용지혜를 접목시키지 못하고 그것을 상실하 는 딜레마에 빠져서 결국 비극적 파멸을 맞이했다. 이 결과는 현대인들에게 중용이 얼 마나 귀중한 지혜인가를 자각하도록 만든다.
        5,400원
        210.
        2016.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        이 연구는 청소년기 자녀를 둔 중년 여성들이 학생상담자원봉사활동 참여 경험을 통해 청소년기 자녀 에 대한 이해 변화와 자기성장을 이루어가는 과정에 대해 살펴보고자 하였다. 이를 위해 한 지역의 학생 상담자원봉사협의회에서 4년 이상 봉사활동을 하고 있는 주로 40대에서 50대의 여성 봉사자 9명과 심층 면담을 실시하였다. 먼저, 청소년기 자녀 이해 변화 과정에 대하여 살펴보면 다음과 같다. 첫째, 학교 현 장의 아이들을 접하면서 이들은 청소년기 아이들에 대해 이해하게 되었다. 둘째, 청소년기 자녀 이해 과정 에서 이들은 자녀의 마음 읽기, 기다려주기 등 공감적 이해를 할 수 있는 계기를 갖게 되었다. 셋째, 상담 봉사 경험을 하게 되면서 자녀 양육태도도 점검하게 되고 부모-자녀관계의 개선을 위해 자신을 변화시키 고 있었다. 넷째, 상담교육과 경험을 통해 얻은 의사소통기술이나 대화법 등의 실제적 적용은 자녀와의 의 사소통에도 긍정적인 영향을 주며 자녀와의 관계 개선에도 기여하고 있었다. 이와 함께 연구 참여자들은 봉사활동 경험을 통하여 자기성장의 의미를 터득하고 있었다. 첫째, 상담 관련 교육을 받고 공부하는 과정 에서 봉사자들은 자기주도 학습 기회를 가지게 되었다. 둘째, 상담 관련 교육과 경험은 자기이해와 자기반 성의 기회를 제공하고 있었다. 셋째, 학생상담봉사활동을 통해 자기만족감, 성취감을 느끼고 있으며, 자아 존중감 향상에도 영향을 주는 것으로 나타났다. 넷째, 상담봉사활동을 통하여 타인의 관점을 이해하고 존 중할 수 있는 태도도 기르고 있었다. 다섯째, 학생상담자원봉사협의회의 회원으로 함께 활동하며 소속감 과 사회적 지지 향상에 도움을 얻게 되었다.
        6,400원
        213.
        2016.07 구독 인증기관·개인회원 무료
        Women aged between 36 and 55 are the main players in the cosmetics market in Taiwan in recent years. Particularly, the sector of anti-ageing cosmetics has grown continually with the support of women at the ages, who have stronger purchasing power than others. Furthermore, the changes of the channel structure in Taiwan have an impact on cosmetics consumption. Department stores have been the leaders of the high-end cosmetics market for a long time. Nevertheless, Taiwanese middle-aged women no longer only purchase cosmetics products in the department stores, but also shop around the pharmacy chain stores, like Cosmed, Poya and Watsons, which expand rapidly in Taiwan recently, buying OTC (Over-the-counter) cosmetics brands and products. It is convenient for women to attach with cosmetics products since the widespread shops available for consumers to pop in and consume a wide range of cosmetics products with more affordable prices (Kantar Worldpanel, 2013). The current research examines the cosmetics shopping and consumption of middle-aged women in the Taiwanese cultural context. The phenomenological interviews were conducted with a purposive sampling with 6 Taiwanese middle-aged women ranging in age from 40 to 60, who used cosmetics on a daily basis, varied in duration, between 1 to 2 hours. The sample size is kept deliberately small as phenomenological interviews are designed to elaborate the richness (Baker et al., 1992) of individuals’ lived experiences, feelings and perceptions of cosmetics consumption. Each interview was conducted online using the social media, Skype, through a webcam. The purpose of the interview was described to the informants as an exploration of women’s cosmetics consumption and how it affected their experiences in their daily lives. They were encouraged to share their own experiences freely. The unstructured interviews started with a question, “What comes to your mind when speaking of cosmetics?” enabling participants to start the dialogue with their most familiar topics and be free to define the meanings of cosmetics in their own words (Liu et al., 2012). In the process of data analysis, 6 principal themes emerged to give more explanations in detail of how middle-aged women in Taiwan strategically manipulate cosmetic shopping to construct, maintain, change, and give meanings to the sense of self in transformational levels during their lifetime course. In addition, due to the widespread of pharmacy stores in recent days, it is found that the middle-aged women’s had changed their shopping behaviours in accordance with the change of retail stores. For example, Karen likes to shop around the pharmacy stores looking for open counter brands which are made in Japan and buying products with the signs showing that are ranked number 1, instead of shopping at the department stores, where she used to go. Moreover, Amy also likes to go to the pharmacy stores which are close to where she lives. There are many new-opened stores, such as Cosmed, Watsons, and Poya rapidly expanded in the rural area that make it more convenient for residents to shop in. She also prefers to buy facial cleansing products which are made in Japan and ranked number 1. As the structure of channel and lifestyle have changed with time, consumers’ cosmetics consumption is changing as well. The research finds that wearing cosmetics has become habits for the Taiwanese women aged between 40 and 60 since they have been using cosmetics for more than 20 years. The meaning behind their “used-to habits” with cosmetics is that consumer’s possessions - cosmetics, have become their extended self and being strategically manipulated to accompany them experiencing through every path of their lives, including pursuing their ideal, hoped-for possible selves, escaping from their negative, feared possible selves, managing their relationship with the social self, and developing their past-present-future self within the historical context.
        214.
        2016.07 구독 인증기관·개인회원 무료
        Prior research in the U.S. documents the interaction between societal changes, money meanings, and family dynamics in the U.S. (Commuri & Gentry, 2005; Rose & Orr, 2007) and India (Merchant, Rose, & Gour, 2015). The present study extends this line of inquiry by examining and contrasting the money attitudes of couples, money meanings, and dynamics of money management within families of two horizontal collectivist nations (Triandis & Gelfand, 1998): India and South Korea. Twelve and six married couples were interviewed in India and Korea respectively. Both nations are horizontal collectivist nations that place a high value on the perceptions and respect of others. Thus, respondents from both nations emphasize the importance of consuming to convey status and keeping up with their neighbors. Indians frequently discuss religious and mythological texts related to money, doing one’s duty, and prosperity’s fickle nature. In contrast, Koreans are less apt to explicitly discuss religious and mythological texts. They appear to be somewhat more present oriented regarding their attitudes toward money and spending. Findings reveal that Koreans focus on security, respect money’s positive utility and necessity, and greed’s potential pitfalls. Koreans seem less concerned about on saving and focus more on enjoying life. Indians link saving to dharma (doing their duty) and supporting their children. Koreans also place a high value on family and supporting their children, but they appear less concerned about the success of future generations than Indians. These differences appear consistent with cultural values and reflect differences in economic development. For example, the homemaker is highly revered in the Hindu religion and Indian culture (Bharat, 2012) where the role is tied to doing one’s dharmatic duty. Korean and other cultures also revere nurturance within the family, but this reverence tends to be expressed within the culture’s specific economic and historical circumstances. Compared to Korea, Indian culture seems less egalitarian and more conservative in attitudes toward woman.
        215.
        2016.07 구독 인증기관 무료, 개인회원 유료
        Luxun, whose works are well-received in Japan, is regarded as a ‘national author’. In 1909, Japanese print media for the first time reported such a ‘thought warrior’ and ‘literature master’. Since then, scholars studying Luxun has made their effort to advertise Luxun. Even up to now, it is fair enough to say as an ‘advocate’ of Chinese national culture, Luxun is still boasting of his radiance, because his works are as mellow as wine, leading readers to meaningful afterthoughts. It is found both in China and Japan that language textbooks of primary and secondary school are seen as a medium to learn about Luxun. Interpreting and teaching Luxun’s works can not only render people more capable of using language, but spread literature knowledge and enrich spiritual wold. Separated by the East China Sea, Japan published the first translated work written by Luxun in 1920s and his articles in Japanese language textbooks were also translated by famous indigenous writers or translators. There are two benefits when we take a look at how many articles written by Luxun are collected into Japanese language textbooks, explore the collecting background, interpret textbooks and analyze exercises about his articles. One is that we can have a clear understanding of the popularity and acceptance of ‘Luxun Spirit’ in Japanese basic education. The other is that we can draw some important lessons for our teaching about Luxun in middle school, and the teaching and study of ‘ China-Japan comparative literature’ for Japanese major students.
        4,000원
        217.
        2016.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to investigate the current status of the creation of indoor gardens in elementary, middle, and high-schools in Gyeongsangnam-do (province) as part of a program to make schools comfortable and beautiful, and for use as base line data when introducing indoor gardens to schools. The participating schools comprised all 536 elementary, 306 middle, and 191 high schools in Gyeongsangnam-do, and the study was conducted between Dec. 20th, 2014 and July 23rd, 2015. The results demonstrate that indoor gardens were introduced to Gyeongsangnam-do schools in 2010, and, since then, 35 elementary and 3 middle schools have created indoor gardens, which is a low adoption rate. Eight-four percent of these indoor gardens were created for appreciation purposes only, without rest facilities. Indoor plants were the main material used for scene configurations, followed by rocks and sculptures. Taking into consideration that 92% of all indoor gardens were created in elementary schools, the current location of gardens near the main entrance, mainly for appreciation purposes, should be changed to areas in which students can play and rest, which would lead to an increase in students’ usage rate.
        4,200원
        218.
        2016.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study aims to investigate the satisfactions with school food service for elementary and middle school parents. We surveyed parents about their concerns regarding food materials, the perception of free school food service, improvement of free school food service and satisfaction with the quality of school food service. The regions were classified into two categories according to the operation of a school food service center. The respondents with greater concern and cooperative purchase of food materials had higher satisfaction with the quality of school food service. It is interesting to note that school food service centers managed directly by the local government had higher satisfaction than those operated by private enterprises with respect to the quality of the school food service. The results of this study can contribute to the establishment of school food service and school food service center policies in the future.
        4,000원
        219.
        2016.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The objective of this study is to investigate the perception and satisfaction of elementary and middle school students on free school food service. We surveyed education related to school food service, concerns about food ingredients, perceptions of free school food service and satisfaction for the quality of the school food service. The investigation is classified into two groups, schools that operate as a food service center or those that do not. Those who are provided food ingredients by school food service centers are educated about the agricultural products’ country-of-origin and their environmentfriendly food service. The more individuals are educated of the foods’ county-of-origin and environment-friendly food service the more they will have a higher concern of the food materials and subsequently a higher satisfaction for the quality of school food service. School food service centers managed directly by the local government would probably receive higher satisfaction than those consigned to a private sector. The results of this study will be meaningful to establish policies on school food service and school food service centers.
        4,000원
        220.
        2016.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        전 세계적인 그리고 국가적인 규모에서 멸종위기야생식물의 멸종위험 평가와 더불어 지역적인 규모에서의 멸종위험 평가는 직접적인 보전활동의 계획과 실행에 있어 대단히 중요하다. 우리나라 중동부지역에는 34종의 멸종위기야생식물 이 분포하였다. 각각의 종에 대해 분포지, 분포면적, 개체수 및 개체군의 소멸에 영향을 미칠 수 있는 요인을 조사하였다. 조사결과에 따라 각각의 종이 소유하고 있는 생활사 특성을 포함한 10가지 평가항목을 바탕으로 위험요인을 평가하였 다. 34종에 대한 위험요인 평가결과 첫째, 다수의 위험요인이 존재하고 심각한 훼손압력에 노출되어 있어 적극적이고 시급한 생육지 보전활동이 필요한 12종, 둘째, 소수의 직접적인 위험요인을 제거하는 것으로 개체군의 지속이 가능한 16종, 셋째, 비교적 넓은 분포지와 많은 개체수에 따라 소극적인 관리를 통해서도 개체군의 지속이 가능한 6종으로 구분되었다. 멸종위기야생식물에 있어 가장 큰 위험요인은 인구의 증가, 개발, 채취에 따른 생육지와 개체군의 소멸이었 다. 또한 식생환경의 변화로 인한 적합한 생육지의 감소와 재정착의 기작이 정상적으로 작동하지 않는 생태계 건강성의 상실이 또 다른 원인이 될 수 있다. 본 조사가 이루어진 지역에서 멸종위기야생식물의 분포지와 출현 빈도 및 중요도를 바탕으로 5개 권역별을 제시하였다. 그리고 각 권역의 특성에 따른 보전 전략을 제시하였다. 우리는 멸종위기야생식물 의 멸종위험에 대한 평가는 분포현황정보 뿐만 아니라 종의 생활사 특성을 포함하는 평가방법이 필요함을 제안한다. 뿐만 아니라 개체군동태와 생태적 지위에 대한 이해가 필요함을 제안한다.
        5,100원