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TensorRT와 SSD를 이용한 실시간 얼굴 검출방법
유혜빈,박명숙,김상훈 한국정보처리학회 2020 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.9 No.10
최근에는 딥러닝 기술을 이용하여 물체 검출 및 인식에서 성능이 크게 향상되는 새로운 접근방법들이 빠르게 제안되고 있다. 객체, 특히 얼굴객체 검출에 관한 여러 기법(Faster R-CNN, R-CNN, YOLO, SSD 등) 중 SSD는 다른 기법들보다 정확도와 속도에서 우수하다. 동시에 여러 객체 검출 네트워크들(object detection network)도 쉽게 이용할 수 있다. 본 논문에서는 객체 검출 네트워크 중 Mobilenet v2 network를 이용하고 SSD와 결합한 모델을 훈련하고, TensorRT engine을 이용하여 기존의 성능보다 4배 이상의 속도로 객체를 검출하는 방법에 대해 제안하고 실험을 통해 성능을 검증한다. 제안한 방법의 성능 검증을 위한 응용으로 얼굴객체 검출기(facial object detector)를 만들어 다양한 상황에서 동작과 성능을 실험하였다. Recently, new approaches that significantly improve performance in object detection and recognition using deep learning technology have been proposed quickly. Of the various techniques for object detection, especially facial object detection (Faster R-CNN, R-CNN, YOLO, SSD, etc), SSD is superior in accuracy and speed to other techniques. At the same time, multiple object detection networks are also readily available. In this paper, among object detection networks, Mobilenet v2 network is used, models combined with SSDs are trained, and methods for detecting objects at a rate of four times or more than conventional performance are proposed using TensorRT engine, and the performance is verified through experiments. Facial object detector was created as an application to verify the performance of the proposed method, and its behavior and performance were tested in various situations.
플랫폼 경제의 부상과 혁신적이고 공정한 산업 생태계 조성 방안
최병삼(Byong-Sam Choi),시새롬(Saerom Si) 과학기술정책연구원 2021 정책연구 Vol.- No.-
A platform economy where platforms bring about huge changes across all areas of the economy is developing around the world. In the past, U.S. and Chinese companies led major platforms in the digital industry. Recently, however, Korean companies are also actively challenging to build platforms. Platforms have the potential to make fundamental changes in the Korean economy, and the next few years will decide whether Korean companies will be able to successfully build platforms and lead the domestic or global ecosystems. It is time for research on platform promotion and regulation measures to promote platform creation and ecosystem leadership of Korean companies. In order to establish national platform policy, it is necessary to understand the characteristics of platforms and to understand the current status of their competition. Major keywords related to the characteristics of platforms include switching costs and multi-homing in the introduction stage, network effects and critical mass in the growth stage, ‘market for lemons’ in the reinforcement stage, two-sided market pricing in the harvest stage, and platform envelopment in the expansion stage. To overview the current status of platform competition at home and abroad, competition for platform leadership has virtually ended in some areas, but fierce competition for leadership is currently underway in many other areas. Taking into account different characteristics of platforms from general products and the current status of competition, we cannot be too cautious when establishing and applying platform policies. Looking at platform policies of other countries, the platform anti-trust bill package was proposed in June 2021 in the United States. Representative bills include American Choice and Innovation Online Act, Ending Platform Monopolies Act, Platform Competition and Opportunity Act, and Augmenting Compatibility and Competition by Enabling Service Switching Act. Representative bills announced in Europe include the Digital Market Act and the Digital Service Act. In Korea, various platform-related bills such as the Online Platform Fairness Act and the Online Platform User Protection Act have been proposed. Although regulations on platforms are generally tightened at home and abroad, it seems that platform policies should be established in consideration of national interests of our country. Considering overseas policy trends and interviews with platform policy experts, this study proposes the following policies. First, it is necessary to support platform companies to solve problems such as conflicts with professionals and consideration for the vulnerable so that they can overcome barriers to entry into the market. Second, in order for platform companies to secure a large number of high-quality participants, different requirements should be identified according to the type and situation of platform workers and solved through social dialogues. Third, in order for platform companies to revitalize ecosystems and transactions, institutional mechanisms should be prepared to make it difficult for platforms to favor their products in sectors with weak market competition, and autonomous regulations should be encouraged in sectors with strong market competition. Fourth, platform companies should be given autonomy to determine appropriate fees, but the government can present guidelines if necessary. Fifth, platform companies should be allowed to acquire competitive startups except in hostile mergers and acquisitions of companies emerging as potential competitors in the existing business area. Sixth, in order to prevent reverse discrimination of domestic companies, regulations that are difficult to apply to overseas companies in reality should not be applied to domestic companies, but should also be applied to overseas companies if regulations are essential. Finally, the platform industry should be promoted by facilitating pilot projects, monitoring the effectiveness of data
서해 보령 연안 연안개량안강망에 어획된 어류의 종조성 및 군집구조
최동혁,윤병일,김맹진,이승종 한국수산과학회 2020 한국수산과학회지 Vol.53 No.5
In order to study about species composition and community structure of fish in the coastal water off Boryeong were investigated from January 2018 to December 2019. A total of 10,863 individuals of 87 species of 44 families were collected. The dominant species were Liparis tanakai accounted for 19.8 percent of the total with Amblychaeturichthys hexanema and Collichthys niveatus accounted for 12.4 percent and 11.0 percent of the total number. A cluster analysis based on the Bray-Curtis similarity revealed that the fish community divided into two groups, According to season. The fish species that appeared summer and autumn were mainly migratory, while the fish species that appeared in spring and winter were mainly resident species. Fish caught by stow net had a high percentage of immature fish. It presented that coastal water off Boryeong is located an important spawning and nursery for fisheries resource.