• 사회복지연구
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• 제42권2호
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• pp.97-122
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• 2011

최근 글로벌 경제위기 직후 각국은 경기부양책의 일환으로 일제히 복지지출을 늘렸으나 재정위기가 불거지면서 복지지출을 급속히 축소시켰다. 그렇다면 경제위기 이후 복지국가는 어떠한 역사적 변곡점을 통과하고 있는 것일까? 빈곤과 양극화로 복지와 이를 책임지는 국가 역할에 대한 요구는 높아지고 있지만, 국가의 위기 대응은 사실상 금융산업 구제와 감세에 집중되었다. 국가는 시장 조정과 개입 능력에 많은 한계를 보였다. 대규모 구제금융 등으로 인한 재정 압박, 정치적 개인주의의 증대와 계급정치 변화 경향, 그리고 복지제도와 금융부문의 혼합 등과 같은 요소들로 볼 때 향후 복지국가 진로에 대해 낙관적 전망을 하기는 어렵다. 경제위기 이후 신자유주의적 자본축적 전략과 국가전략이 유지되고 있는 가운데 중간층 대상의 현금급여 위주로 복지 축소가 진행되고 있다. 따라서 과거와 같은 계급타협보다는 복지국가가 최소수준 보장을 통해 빈민에 대한 포섭을 강화하는 것이 유력하게 전망 된다. 이러한 최소주의 복지국가로의 진행을 막는 관건은 아래로부터의 연대를 통해 자본을 압박하는 것이지만, 그 전망은 불투명하다.

• 한국정밀공학회지
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• 제21권1호
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• pp.51-60
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• 2004

Ball-end milling is one of the most common manufacturing processes for the parts with sculptured surface. However, the conventional roughness model is not suitable for the evaluation of surface texture and roughness under highly efficient machining conditions. Therefore, a different approach is needed for the accurate evaluation of machined surface. In this study, a new method, named ‘Ridge method’, is proposed for the effective prediction of the geometrical roughness and the surface topology in ball-end milling. Theoretical analysis of a machined surface texture was performed considering the actual trochoidal trajectories of cutting edge. The characteristic lines of cut remainder are defined as three-types of ‘Ridges’ and their mathematical equations are derived from the surface generation mechanism of ball-end milling process. The predicted results are compared with the results of conventional method. The agreement between the results predicted by the proposed method and the values calculated by the simulation method shows that the analytic equations presented in this paper are useful for evaluating a geometrical surface roughness of ball -end milling process.

• 제어로봇시스템학회논문지
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• 제11권3호
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• pp.214-221
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• 2005

For decades, airships have being developed in Europe (especially German) and America. Airships are planning to be used for advertisements and airliners as well. In Korea, KARI (Korea Aerospace Research Institute) is developing stratospheric communication airship and the similar research is carried out in Japan. Among them, Zeppelin of German has the cutting-edge airship technology with Zeppelin NT. In this paper, the flight performance and stability were evaluated by comparing mathematical theory and the real test. The stability was examined through dynamic modeling and assured by designing controllers at each flight mode. Elevator angle, rudder angle, magnitude of thrust and tilting angle of thrust vector were used as control inputs. Moreover, after measuring the airship velocity, flight direction, magnitude and direction of the wind, attitude angles and trajectories of the airship at each flight mode, the results were compared with the simulation. To get the reasonable data, low-pass filter and band-stop filter were designed to get rid of the sensor noise and engine vibration. The test was accomplished at cruise mode, turning mode, and deceleration. To conclude, with comparing the simulation data and flight test data, it could be known that the dynamic model used in this paper was reasonable.

• Advances in nano research
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• 제16권6호
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• pp.615-622
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• 2024

This study investigates the impact of educational management on the performance of scholars in the field of nano/micro-level composites. The objective is to understand how effective management strategies can enhance the academic achievements and research outcomes of students specializing in this advanced area of materials science. Through a combination of qualitative and quantitative methodologies, data was collected from various educational institutions renowned for their programs in nano/micro-level composites. Our results indicate that tailored educational management practices significantly improve student performance. Key strategies identified include personalized mentorship programs, interdisciplinary collaboration opportunities, and access to state-of-the-art laboratory facilities. Institutions that implemented these practices observed a marked increase in the quality and quantity of research outputs, higher student satisfaction rates, and improved post-graduation employment prospects in relevant industries. Furthermore, the study highlights the importance of continuous professional development for educators to stay abreast of the latest advancements in nano/micro-level composites. By fostering an environment of innovation and support, educational management can play a crucial role in shaping the next generation of researchers and professionals in this cutting-edge field. These findings underscore the necessity of strategic educational management in optimizing the academic and professional trajectories of scholars in nano/micro-level composites, ultimately contributing to advancements in technology and industry applications.