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      • 지식기반 사회의 평생교육: UP 방송통신 대학에서의 새로운 경향을 중심으로

        Alexander APEC국제교육협력원 2009 국제교육협력연구지 Vol.2 No.2

        본 연구는 신흥 글로벌 대학교로써 필리핀 대학의 가상 캠퍼스이자 5번째 구성 단위인 필리핀 개방대학(UPOU)을 중심으로 지식기반 시대의 평생교육에 관한 새로운 경향에 대해 조사한 연구이다.필리핀 개방대학(UPOU)의 경험을 기반으로 본다면, 평생 학습은 본래 온라인 학습의 영향을받을 것임이 분명하다. 새로운 시대의 온라인 학습은 확장적이며 학습자 중심이 될 것이다. 그것은 교수자와 튜터의 개념을 멘토와 코치의 개념으로 대체할 것이다. 게다가 신 시대에서의평생 학습은 지리학적, 규율적, 그리고 유형적 경계간의 흔들림을 보여 줄 것이다. 국제어로서의 영어에 대한 통용 등으로 초국가적 교육이 더욱 지배적일 것이다. 또한 지식 분야간 경계들은 허물어질 것이다. 특정 노동시장의 요구를 반영한 특별한 프로그램의 형태를 지닌 초지식적융합교육이 부상하게 될 것이다. 직업교육의 기초, 고등, 기술 교육과 같이 형식적 교육, 비형식적 교육 그리고 무형식 교육 간의 엄격한 경계들은 이러한 교육의 형태들 사이의 밀접한 소통에 따라 이제는 허물어질 것이다. 더욱이 프로그램들은 다양한 시작점과 종료점을 보일 것이다.자유입학제도, 자유 교육기간, 그리고 학습자원에 대한 공개 등과 같은 교육관리적 접근에서 뚜렷하게 나타날 개방교육은 또 하나의 새로운 경향이다. 게다가 유비쿼터스 환경은 평생 학습에서 주요 경향이 될 것이다. 학습은 넷북과 이동전화와 같은 단말기와 클라우드 컴퓨팅, 그리고WiFi와 WiMAX 서비스 등을 통해서 언제 어디서든 일어날 수 있는 것이다.마지막으로, 본 연구지를 통해 평생 학습 수요자들의 변화에 관한 이야기를 나누고자 한다. 이전에는 평생 학습의 기회들이 교육에의 접근이 근본 이슈였던 외곽 지역의 극빈자들을 위한 것이었다. 평생학습은 교육의 기회가 동등히 부여되지 않았던 소외층, 과년(過年)층, 그리고 여성들을 대상으로 하여왔다. 이제는 새로운 전달 체제의 결과로써 부유층, 전문가, 그리고 고등 교육자들이 소외층보다 더 많이 평생 학습의 기회를 활용하고 있다. This paper presents emerging perspectives on lifelong education in this new knowledge era from an emerging global university, the UP Open University, the fifth constituent unit and cyber campus of the University of the Philippines system. Based on UPOU’s experience, lifelong learning will primarily be influenced by online learning. Online learning in the new era will be scalable and learner-centered. It will make use of mentors and coaches instead of instructors and tutors. Furthermore, lifelong learning in the new era will see a blurring of geographical, disciplinal and modal boundaries. With the global adoption of a lingua franca, English, transnational education will become predominant. Boundaries between and among discipline will likewise dissolve. Transdisciplinary education in the form of specialized programs that address specific workplace needs will become the norm. Strict boundaries between formal, nonformal and informal education; between basic, higher and technical vocational education will cease to exist with the provision of ladders, bridges and pathways between these educational modes. Additionally, programs will have multiple entry points and exit points. Another emerging trend is Open Education, which may manifest itself in educational governance approaches such as: open admissions; open ended timeframes for programs; and open access learning resources. Additionally, ubiquity will become a major trend in lifelong learning. One can learn at any place in any time with: mobile devices such as netbooks and mobile phones; cloud computing; and WiFi/ WiMAX services. Lastly, the paper establishes the shift on lifelong learning clientele. Before lifelong learning opportunities were targeted at the poorest of the poor, living in remote areas, where access is a primary issue. Lifelong learning was for the marginalized, the overaged and women whose cultures denied them equal access. Now, as a result of the emerging delivery systems the well off, the professional and the advanced student now avail of lifelong learning opportunities more than the marginalized

      • KCI등재

        Log-concavity and zeros of the Alexander polynomial

        Alexander Stoimenow 대한수학회 2014 대한수학회보 Vol.51 No.2

        We show that roots of log-concave Alexander knot polyno- mials are dense in C. This in particular implies that the log-concavity and Hoste’s conjecture on the Alexander polynomial of alternating knots are (essentially) independent.

      • SCIESCOPUSKCI등재

        LOG-CONCAVITY AND ZEROS OF THE ALEXANDER POLYNOMIAL

        Stoimenow, Alexander Korean Mathematical Society 2014 대한수학회보 Vol.51 No.2

        We show that roots of log-concave Alexander knot polynomials are dense in C. This in particular implies that the log-concavity and Hoste's conjecture on the Alexander polynomial of alternating knots are (essentially) independent.

      • Willful Blindness About Indigenous Peoples: The Democratic Deficit and Canadian Public Policy Making

        C. J. Alexander(C. J. Alexander ),Mallory Crew(Mallory Crew ) 한국캐나다학회 2011 Asia-Pacific Journal of Canadian Studies (APJCS) Vol.17 No.1

        Public policy officials, elected and appointed, continue to ignore the value dimensions of public policy making in ways that profoundly impact the individual and collective lives of Indigenous peoples in Canada. The au-thors examine two policy fields—health and communications—to highlight the peril of ignoring Indigenous cultural contexts. They conclude that the overarching policy of wilful blindness to Indigenous values, ways of being, and knowledge systems represents a continuation of the colonial mindset that has persisted since settlers arrived.

      • KCI등재

        Progressive lysosomal membrane permeabilization induced by iron oxide nanoparticles drives hepatic cell autophagy and apoptosis

        Levada Kateryna,Pshenichnikov Stanislav,Omelyanchik Alexander,Rodionova Valeria,Nikitin Aleksey,Savchenko Alexander,Schetinin Igor,Zhukov Dmitry,Abakumov Maxim,Majouga Alexander,Lunova Mariia,Jirsa Mi 나노기술연구협의회 2020 Nano Convergence Vol.7 No.17

        Iron oxide nanoparticles (IONs) are frequently used in various biomedical applications, in particular as magnetic resonance imaging contrast agents in liver imaging. Indeed, number of IONs have been withdrawn due to their poor clinical performance. Yet comprehensive understanding of their interactions with hepatocytes remains relatively limited. Here we investigated how iron oxide nanocubes (IO-cubes) and clusters of nanocubes (IO-clusters) affect distinct human hepatic cell lines. The viability of HepG2, Huh7 and Alexander cells was concentration-dependently decreased after exposure to either IO-cubes or IO-clusters. We found similar cytotoxicity levels in three cell lines triggered by both nanoparticle formulations. Our data indicate that different expression levels of Bcl-2 predispose cell death signaling mediated by nanoparticles. Both nanoparticles induced rather apoptosis than autophagy in HepG2. Contrary, IO-cubes and IO-clusters trigger distinct cell death signaling events in Alexander and Huh7 cells. Our data clarifies the mechanism by which cubic nanoparticles induce autophagic flux and the mechanism of subsequent toxicity. These findings imply that the cytotoxicity of ION-based contrast agents should be carefully considered, particularly in patients with liver diseases.

      • KCI등재

        Radiation-induced transformation of Hafnium composition

        Alexander Ulybkin,Alexander Rybka,Konstantin Kovtun,Vladimir Kutny,Victor Voyevodin,Alexey Pudov,Roman Azhazha 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.8

        The safety and efficiency of nuclear reactors largely depend on the monitoring and control of nuclear radiation. Due to the unique nuclear-physical characteristics, Hf is one of the most promising materials for the manufacturing of the control rods and the emitters of neutron detectors. It is proposed to use the Compton neutron detector with the emitter made of Hf in the In-core Instrumentation System (ICIS) for monitoring the neutron field. The main advantages of such a detector in comparison the conventional b-emission sensors are the possibility of reaching of a higher cumulative radiation dose and the absence of signal delays. The response time of the detection is extremely important when a nuclear reactor is operating near its critical operational parameters. Taking Hf as an example, the general principles for calculating the chains of materials transformation under neutron irradiation are reported. The influence of 179m1Hf on the Hf composition changing dynamics and the process of transmutants’ (Ta, W) generation were determined. The effect of these processes on the absorbing properties of Hf, which inevitably predetermine the lifetime of the detector and its ability to generate a signal, is estimated.

      • KCI등재

        Dairy goat production in sub-Saharan Africa: current status, constraints and prospects for research and development

        Alexander K. Kahi,Chrilukovian B. Wasike 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.8

        This paper presents a review of dairy goat production in sub-Saharan Africa (SSA) from 2010- 2017, its current state, constraints and prospects for research and development. Since the introduction of dairy goats in SSA in pre-colonial times, their populations have continued to increase due to declining land size as a result of land fragmentation and increasing demand for goat milk. The current goat population in SSA is 372,716,040 head of which only 15.98% used for milk production. Populations in the Eastern and Western regions of SSA have shown an increasing trend from 2010 to 2017. The Southern Africa goat population is on the decline at an annual rate of about 1.77% whereas Central Africa has had a constant goat population within the same period. Eastern Africa reported the highest increase in the population of goats used for milk production. Milk production was highest in Eastern Africa and lowest in Southern Africa. However, dairy goat productivity remained constant in the Eastern region throughout the review period. Dairy goats are mainly raised under smallholder mixed crop-livestock systems. To enhance the development of the dairy goat, concerted efforts should be made to alleviate the constraints that stifle its growth. These constraints can be categorized into nutrition and feeding, breeding and reproduction, diseases, parasites, climate change, and underdeveloped dairy goat products market. Effective management of dairy goats requires a holistic approach and there is the need to expand the markets by further sensitization on the nutritional and medicinal advantages of dairy goat products. In order to achieve rapid development in the dairy goat sub sector, research and development initiatives should be directed towards alleviating the hurdles in nutrition and feeding, breeding, animal health and resilience as well as dairy goat markets.

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