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Kalanchoe 식물의 영양 번식에 영향을 줄 수 있는 유전자들의 선발
Yuchul Jung(정유철),Youngjae Chung(정영재),Donggiun Kim(김동균) 한국생명과학회 2011 생명과학회지 Vol.21 No.6
Bryophyllum 속에서 그것들의 잎으로부터 소식물체를 생산하는 능력을 갖고 있는 많은 종들이 잘 알려졌다. 이러한 현상은 또한 식물 영양생식으로 알려져 있다. DEG 유전자 감지 기술이 소식물체 형성을 위한 무성생식과정에 관련된 유전자의 조사에 적용되었다. 탐색 된 유전자들은 NCBI 데이터베이스를 사용한 검색 법을 기반으로, 총 69 DEGs에서 38 유전자가 발견되었다. 대부분의 이러한 DEGs는 호르몬(cytokinin과 에틸렌) 신호, 세포 신호 전달, 그리고 세포 분열과 관련 된 유전자들이였다. The genus Bryophyllum is best known for many of its species having the ability to produce plantlets on their leaves. This phenomenon is also known as vegetative reproduction. Differential expressed gene (DEG) detecting technique was applied in order to survey the genes involved in the process of asexual reproduction for plantlet formation. Based on homology search using the NCBI database after screening of genes, 38 genes were identified from a total of 69 DEGs. Most of these DEGs were related to cell division, to intercellular signal transduction, and to hormone (cytokinin and ethylene) signaling.
Employing collective intelligence for user driven service creation
Yuchul Jung,Yoo-mi Park,Hyun Joo Bae,Byung Sun Lee,Jinsul Kim IEEE 2011 IEEE communications magazine Vol.49 No.1
<P>With advances in computing technologies and active user participation through smart devices such as the iPhone and Android, user needs are becoming varied and complex. It is quite natural, then, that a single Web service may not be sufficient to fully satisfy the diverse goals of users in their daily lives. A set of cohesively connected Web services/mashups may be able to deal with these goals. An increasing number of open APIs can facilitate various types of service compositions with users as the service creators. Recently, Internet, telecommunications, and third-party providers have opened their services to the public in the form of open APIs, a trend following the Web 2.0 paradigm. However, most service creation environments do not have sufficient knowledge (particularly, available services and their functionality) to support service creation by users. The problem of knowledge scarcity is that users may have difficulty in finding relevant open APIs for a given situation, finally resulting in rather straightforward types of service. In this article we present two kinds of collective intelligence for user-driven service creation: the user's own experiences in service composition, and activity knowledge from the web. These collective intelligence types will aid in creating enduser service compositions by enforcing knowledge support in terms of user experiences and activity-aware functional semantics, and will finally accelerate the development of various kinds of converged applications. Using the beneficial roles of collective intelligence as key enablers of future service creation environments, this article also shows a new potential for user-driven composite services within the next few years.</P>
Repulsion Distance Intersection over Union Loss for Crowd Scene Detection
YuChul Shin,Eunju Lee,Soojin Jang,YoungBin Kim,JuneHyoung Kwon 중앙대학교 영상콘텐츠융합연구소 2022 TechArt :Journal of Arts and Imaging Science Vol.9 No.1
The detection of many people or crowds increases the false-positive prediction rate owing to the creation of more bounding boxes. In this study, a loss function that reduces the false positive predictions of an object detection model is proposed. The proposed loss function induces not only the bounding box to be closer to the ground truth (GT) box but also the center point distance between the GT box and the overlapped adjacent object or other bounding boxes to be longer. In addition, a balanced feature pyramid was introduced to enhance the precision of object prediction. Applying the proposed method, ℎ log-average miss rate on false positive per image in [10<SUP>−2</SUP>, 100] was 1.89% lower while average precision and Jaccard index were 0.5% and 0.58% higher, respectively, than those of the conventional method, which indicates that it effectively reduces false positive predictions.