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        한국적 입장에서 본 포괄적 안보와 협력안보에 대한 연구

        임용순 한국전략문제연구소 1999 전략연구 Vol.6 No.2

        The concept of national security is an illusive one at best. Consequently, we are often in a state of confusion when we debate what ought to be included in its consideration. The problem is that the sense of national security is ultimately a subjective matter. Furthermore, security no longer is confined by its conventional definition. but is multi-faceted, with each aspect warranting examination and study. The means of national security have traditionally been identified with the issues of military power, national defence, war, and peace. In the history of mankind, the twentieth century has been the most serious century in terms of the competition among states. Many nations were destroyed not by an external enemy, but by their internal problems. Nation has always been involved in war preparedness, and moreover in the utilization of its resources to supplement military prowess. The disturbing fact is that recently the expansion of violence in society for ideological and political purposes can be seen in almost every state. Such internal violence undermines not only national security, but quite frequently international security as well This violence has been propelled by criminal activity and also by ideological goals. Terrorism and other militant violence have particularly strong international linkages. The development of modern communication and transportation systems has increased the vulnerability of inter-dependent, integrated civil societies. Therefore, we must have a more comprehensive security program for each state. The nature of competition among nations has recently changed, so the concept of national security must also change as well. Traditional states, which still preserve traditional values and institutions, may be unable to cope with these newly emerging demands from various sectors of international society. Violent and non-violent crime, money laundering, political corruption, international drug trafficking and abuse, smuggling and illegal sale of weapons, and terrorism may end up destroying the fabric of societies, and in return threaten national security. Particularly, the post cold war order world requires the "extended security" concept due to the multi-faceted linkages of crime from abroad Consequently, comprehensive and cooperative security in this situation becomes a very important polemic ill the national security agenda. The traditional concept of national security has evolved exclusively around the military capability of a nation. Under the Cold War system, military power was considered to be almost the only method to deter others from possible aggression. During this period, the threat of nuclear war was the predominant concern regarding national security. Limited conventional wars and guerilla warfare were next in priority in regards to national security. The end of the Cold War followed by the emergence of a new world order, social changes in each nation, and the appearance of new transnational threats have combined to induce change in the traditional way of thinking about national security. Transnational crimes have repeatedly threatened or even destroyed social structure in many states. The increase in worldwide crime is the result of an interplay between failures in national and international planning and rapid social change. The emergence of crime that is aggressively transnational in nature rapidly extends criminal activity beyond the confines in which the domestic jurisdiction of states can operate effectively without cooperation from other states. Thus the transnationalization of criminal organizations has become an important contributing factor to the destruction of ordinary society. It may also become imperative to national security systems. After the Cold War, many countries give priority in their security concerns to internal stability, national development, and social harmony. Understandably, this is a result from their sense of vulnerability to internal threats. Very often, this internal instability invites intervention from the outside. As a result, after the Cold War, thinking about security has moved further away from the state centered, military oriented constructs of the traditional realism paradigm towards the search for a concept of security which can incorporate emerging new issues. These issues, as repeatedly pointed out, tend to be complex, multidimensional and very often transnational in form and impact. For the most part, they stretch the boundaries of traditional thought in regards to security. Thus the concept of comprehensive security incorporates not only the external environment, but also the domestic dimension of security. However, it must be clear that the comprehensive security plan is to be complementary to the traditional security plan. Therefore, the traditional security plan cannot be superseded by the new plan. In conclusion, these days national security requires a higher level of cooperation with other states. It requires cooperation even with potential and existing adversaries. At the same time, each nation must be adaptable to the changing environment when dealing with security matters. Surely, our major national security threat comes from North Korea. But the times is changing. After all, comprehensive and cooperative security will contribute to the stability of the state.

      • KCI등재SCOPUS
      • KCI등재SCOPUS
      • KCI등재

        영상의 양자화 계수를 이용한 DCT 기반 워터마킹 기법

        임용순,강은영,박재표 한국인터넷방송통신학회 2014 한국인터넷방송통신학회 논문지 Vol.14 No.2

        모바일 정지영상ㆍ동영상 등의 정보에 디지털 신호를 삽입하여 저작권을 주장하는 방안으로 워터마킹 알고리 즘을 들 수 있다. 본 논문에서는 영상의 양자화 계수를 이용한 이산 코사인 변환(DCT)을 기반으로 하는 워터마킹 알 고리즘 방법을 제안하였다. 워터마크 삽입 기법은 디지털 원영상의 DCT와 양자화를 통하여 계수들(Quantized Coefficient)를 얻게 되었고, 양자화 계수들은 원하는 위치(Key)에 따라 DCT를 기반으로 한 워터마크(DCT-based watermark)를 삽입하게 되었다. 워터마크가 삽입된 부호화 정보는 역 양자화와 역 DCT를 통하여 워터마크 된 영상을 얻게 된다. 워터마크 추출 기법은 워터마크된 영상과 위치(Key)만을 사용하며, 워터마크 된 영상을 DCT와 양자화를 통하여 원하는 위치(Key)에서 계수를 분리하여 역 DCT하여 원 워터마크를 얻을 수 있었다. 모의실험 결과, 워터마크 된 영상과 추출된 워터마크에서 영상의 화질(PSNR)과 워터마크의 정규화 상관도 (NC) 에서 만족할 만한 결과를 확인 하였다. Watermarking is one of the methods that insist on a copyright as it append digital signals in digital informations like still mobile image, video, other informations. This paper proposed an improved DCT-based watermarking scheme using quantized coefficients of image. This process makes quantized coefficients through a Discrete Cosine Transform and Quantization. The watermark is embedded into the quantization coefficients in accordance with location(key). The quantized watermarked coefficients are converted to watermarked image through the inverse quantization and inverse DCT. Watermark extract process only use watermarked image and location(key). In watermark extract process, quantized coefficients is obtained from watermarked image through a DCT and quantization process. The quantized coefficients select coefficients using location(key). We perform it using inverse DCT and get the watermark’. Simulation results are satisfied with high quality of image (PSNR) and Normalized Correlation(NC) from the watermarked image and the extracted watermark.

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