• Korean Journal of Radiology
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• 제24권5호
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• pp.444-453
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• 2023

Objective: Meningeal lymphatic vessels are predominantly located in the parasagittal dural space (PSD); these vessels drain interstitial fluids out of the brain and contribute to the glymphatic system. We aimed to investigate the ability of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in assessing the dynamic changes in the meningeal lymphatic vessels in PSD. Materials and Methods: Eighteen participants (26-71 years; male:female, 10:8), without neurological or psychiatric diseases, were prospectively enrolled and underwent DCE-MRI. Three regions of interests (ROIs) were placed on the PSD, superior sagittal sinus (SSS), and cortical vein. Early and delayed enhancement patterns and six kinetic curve-derived parameters were obtained and compared between the three ROIs. Moreover, the participants were grouped into the young (< 65 years; n = 9) or older (≥ 65 years; n = 9) groups. Enhancement patterns and kinetic curve-derived parameters in the PSD were compared between the two groups. Results: The PSD showed different enhancement patterns than the SSS and cortical veins (P < 0.001 and P < 0.001, respectively) in the early and delayed phases. The PSD showed slow early enhancement and a delayed wash-out pattern. The six kinetic curve-derived parameters of PSD was significantly different than that of the SSS and cortical vein. The PSD washout rate of older participants was significantly lower (median, 0.09; interquartile range [IQR], 0.01-0.15) than that of younger participants (median, 0.32; IQR, 0.07-0.45) (P = 0.040). Conclusion: This study shows that the dynamic changes of meningeal lymphatic vessels in PSD can be assessed with DCE-MRI, and the results are different from those of the venous structures. Our finding that delayed wash-out was more pronounced in the PSD of older participants suggests that aging may disturb the meningeal lymphatic drainage.

• 한국경제지리학회지
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• 제26권4호
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• pp.421-442
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• 2023

본 연구는 비수도권 청년층의 이주유형 특성이 지역별로 상이하게 나타난다는 점에 주목하여 이주유형별 결정요인의 차이를 비교 분석하는 데 주요 목적을 두었다. 먼저 비수도권 청년층의 이주 실태 및 특성을 탐색적으로 분석한 후 위계로짓모형을 활용하여 이주유형별 결정요인을 각각 추정하였다. 분석 결과 이주유형별 특성이 지역별로 상이하게 관찰되었고, 각각의 이주유형별 결정요인 또한 서로 다른 변수(개인 및 지역수준)들의 묶음(bundle)으로 구성되어 있음을 확인할 수 있었다. 향후 비수도권의 청년인력 확보 정책은 다양한 이주선택의 결정요인을 충분히 고려하고 지역적 맥락이 반영될 때 정책의 효과를 배가시킬 수 있을 것이다.

• 시큐리티연구
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• 제25호
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• pp.109-130
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• 2010

우리나라를 비롯한 각국이 경제정보전을 가속화하면서 국가역량을 총동원하고 있으며 이런 과정에서 산업기술 정보의 불법 유출이 급속하게 늘어나고 있다. 2007에서 2008년까지의 피해 예방액만 약 180조 원에 다다르며 앞으로 그 액수는 더욱 커질 것으로 본다. 이러한 핵심기술 유출수법도 개인에 의한 단순 절취에서 연구 활동 참여자 전원이 가담하는 등 조직화, 대형화되고 있기 때문에 기술을 개발하는 것 외에 기술을 지키는 것에도 관심과 역량을 집중할 시기이다. 이러한 고급두뇌들의 유출은 여러 가지 요인이 있을 수 있으나 일반적으로 자녀 교육 및 보수 등의 개인적 요인, 경력직으로서의 빠른 순환의 노동시장, 연구의 정치적 제약 등 개인 사회 정치 문화 등의 다양한 요인에 의해 발생할 수 있다. 따라서 이 연구를 통해 핵심인력 유출을 방지하기 위한 대책으로 각 기업체 및 연구소별 조직이나 업종의 목적과 이념에 핵심인력 관리시스템을 체계적으로 구축하여 핵심인재에 대해서는 차별화된 처우와 보장, 감독을 실시해야 하며, 핵심인력이 다시 돌아올 경우 인사 상 불이익을 주지 않고 외부 경험을 접목시키도록 배려하는 등 인사체제를 개방형으로 전환할 것을 제시하고있다. 또한, 국내외 대학에 업계 공동으로 연수를 보내는 등 상호간의 협력과 자사 교육 시설의 확보를 통한 핵심인력의 양성 및 교육이 필요하다. 아울러 핵심인력의 유출과 관련한 현안들은 각 기업체만의 문제가 아니며 외국에서도 국가적인 차원에서 핵심기술을 확보하기 위한 작업에 혈안이 되어 있는 만큼 기업체와 유관기관의 공조체제가 매우 필요하고 할 수 있다.

• 한국경제지리학회지
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• 제25권4호
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• pp.600-616
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• 2022

본 연구에서는 제조창업의 공간적 맥락에 대한 고찰과 함께 DID모형을 활용하여 기술수준별 제조창업의 연차별 고용증가 효과 추이를 분석하였다. 분석 결과 수도권과 비수도권, 대도시 지역에서의 특성이 다르게 확인되었다. 특히 고기술 제조창업은 수도권에서 단기에 걸쳐 고용증가 효과가 두드러진 반면 비수도권에서는 중고기술 제조창업이 장기에 걸쳐 고용증가 효과가 높게 나타났다. 대도시 지역에서는 기술수준별 제조창업의 고용증가 효과가 뚜렷하게 발견되지 않았다. 이러한 분석 결과가 제공하는 함의는 다음과 같다. 먼저 수도권의 고기술 제조창업은 비교적 단기에 고용증가 효과가 높게 나타나므로 그 효과가 장기간 지속될 수 있도록 창업 후 일정 기간이 지난 생존기업의 스케일업에 정책지원이 집중될 필요가 있을 것이다. 반면 비수도권 및 지방 대도시 지역에서는 창업지원 인프라의 수도권 쏠림현상과 인재유출 등의 현실적인 상황을 감안하여 실제적인 고용증가 효과가 확인되는 중고기술 창업, 즉 전통적 제조기반을 토대로 한 산업영역에 창업지원 역량을 집중할 필요가 있으며 고용창출 효과가 드러나는 시차를 고려하여 장기적인 안목에서 정책지원, 평가 등이 이루어져야 할 것이다.

• 대한간호학회지
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• 제3권2호
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• pp.121-132
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• 1973

Introduction : Nursing as a profession is gelling wide acceptance today, especially among independent -minded women with necessary physical, mental and academic qualifications. This is particularly true of "comprehensive nursing", which requires to total dedication on the part if the nurse herself-physical, mental and sociocultural. Such comprehensive approach is like-wise called for in the institutional training of professional nurses. Undergraduate nursing courses nowadays place an increasing emphasis on the microscopic approach of training a nurse as an intelligent and well-balanced human being with an optimum degree of cultural sophistication. Greater attention then ever before is now paid to close observation of the individual traits and aptitude of nursing students, so as to permit full development of individual capabilities, interests and propensities within the concept of "comprehensive human education. " Purpose of study 1. To determine the degree of understanding of the part of nursing students of the various aspects of the subject taught in undergraduate nursing course. 2. To determine the motivation of nursing students in choosing the profession and possible subsequent change or attitude and outlook in the course of under graduated studies, as a means of presenting a new practical approach in nursing training based on the concept of "comprehensive human education. " Problems of study 1. The environments of nursing training will impinge on individual nursing students with different psychological impacts from lower to upper classes of under graduated studies. 2. Educational environments will have varying psychological impacts on students: a. Difference in religious faith among students. b. Difference in campus environments. c. Difference in domestic (family) circumstances. d. Difference in innate capabilities of students, 3. The understanding and attitude of individual nursing students towards the science of nursing will Have a close correlation with their respective motivations in choosing-nursing as a profession, and will also be closely influenced by the peculiarities of the subject taught, tile campus environments, etc, Delimitations of the study 1. Two universities offering 4-year nursing courses were selected. Due to the limited number of potential subjects, the optimum conditions of sample collection could not be fulfilled. 2. Subjects were confined to two classes in each university (sophomores and seniors) but without regard to the ages or scholastic achievements of individual students. 3. The conclusions derived from this study should be limited in application to the subject groups covered by the present study: they should not in any event be extended or applied to other groups. Procedures 1. Subjects: 40 nursing students each from the sophomore and senior classes of the "Y" and "K" universities situated in Seoul, aggregating 160 students altogether. 2. Instruments: Use has been made of questionnaires on (1) family backgrounds and (2) general information concerning. 3. Statistical Method: The findings of the present survey have been subjected to critical analysis as to the means, percentages, Cgi squares (X), standard deviations and the significance of the difference in means. Findings 1. Nursing students have chosen their subject of study with a confident outlook towards their future in society. 2. Horsing students have the necessary abilities to complete the prescribed courses of study. 3. The campus life of nursing students has been judged as very constructive, not with-standing certain in adequacies in the available educational facilities and the shortages of teaching staff. 4. The achievement levels of nursing trainees varied greatly according to their respective educational environments as well as their school years. 5. Clear and definite distinctions were discernible between the two universities as regards certain aspects of this survey, while no signifiant difference was observed in other: a. Sophomores and seniors in both universities gave nearly identical answers to questions concerning (1) motivation in choosing nursing as a profession, and (2) the way of spending leisure hours. b. Both universities revealed similar respective differences between sophomores and seniors as regards the abilities of fulfilling academic requirements ill the basic subjects. c. Educational environments have been found to be somewhat superior in the "Y"university to those of the "K" university, particularly as regard general campus and dormitory conditions. d. The high degree of dissatisfaction with the faculty, found in both universities, was considered to be a consequence of the universal phenomenon of "brain drain" and the relative neglect of the "comprehensive approach"in education.