Abnormal behaviour in rock bream (Oplegnathus fasciatus) detected using deep learning-based image analysis

Jang, Jun-Chul,Kim, Yeo-Reum,Bak, SuHo,Jang, Seon-Woong,Kim, Jong-Myoung The Korean Society of Fisheries and Aquatic Scienc 2022 Fisheries and Aquatic Sciences Vol.25 No.3

Various approaches have been applied to transform aquaculture from a manual, labour-intensive industry to one dependent on automation technologies in the era of the fourth industrial revolution. Technologies associated with the monitoring of physical condition have successfully been applied in most aquafarm facilities; however, real-time biological monitoring systems that can observe fish condition and behaviour are still required. In this study, we used a video recorder placed on top of a fish tank to observe the swimming patterns of rock bream (Oplegnathus fasciatus), first one fish alone and then a group of five fish. Rock bream in the video samples were successfully identified using the you-only-look-once v3 algorithm, which is based on the Darknet-53 convolutional neural network. In addition to recordings of swimming behaviour under normal conditions, the swimming patterns of fish under abnormal conditions were recorded on adding an anaesthetic or lowering the salinity. The abnormal conditions led to changes in the velocity of movement (3.8 ± 0.6 cm/s) involving an initial rapid increase in speed (up to 16.5 ± 3.0 cm/s, upon 2-phenoxyethanol treatment) before the fish stopped moving, as well as changing from swimming upright to dying lying on their sides. Machine learning was applied to datasets consisting of normal or abnormal behaviour patterns, to evaluate the fish behaviour. The proposed algorithm showed a high accuracy (98.1%) in discriminating normal and abnormal rock bream behaviour. We conclude that artificial intelligence-based detection of abnormal behaviour can be applied to develop an automatic bio-management system for use in the aquaculture industry.

Comparison of Liquid Crystal Alignments on Rubbed and Linearly Polarized UV-Irradiated Polyimide Surfaces

Jang, A-Reum,Chae, Boknam,Gil, Eun Kyung,Bae, Jun,Lee, Seung Woo Informa UK (TaylorFrancis) 2012 Molecular Crystals and Liquid Crystals Vol.563 No.1

The Comparison between Phase Control Method and Discrete Frequency Starting Method

Poo Reum Jang,Dae Yeon Hwang,Sang Min Park,Byong Jo Hyon,Joon Sung Park 한국신재생에너지학회 2023 AFORE Vol.2023 No.11

中國端午節 傳承과 現在的 觀點

張正龍(Jang, Jung-ryoung),張娥凜(Jang, A-reum) 아시아강원민속학회 2010 아시아강원민속 Vol.24 No.-

中國端午節은 2009년 유네스코 세계무형문화유산대표목록으로 등재되었다. 중국 단오절은 현재 세시풍속으로 전승되고 있으나 그 시원은 長江流域江文化와 楚國 愛國詩人 屆原遺題 관련된 전승이 이어지고 있다. 이와 같이 중국 단오절은 2천년이 넘은 역사를 지니고 전승되고 있으며, 중국인의 사랑받는 전통명절로서 근래 들어 다양한 활동과 학술연구가 진행되고 있다. 2010년 국가법정 공휴일인 단오절에는 중국 가흥시, 형주시 등에서 아시아각국 학자들이 참석한 단오절 학술토론회가 열렸으며, 이 시기 한국 강릉시에서도 국제아세아민속학회와 강릉단오제위원회의 공동주최로 학술대회가 개최되었다. 이와 같이 단오문화에 대한 한중 양국의 다각적이고 경쟁적인 연구 활동이 진행되고 있다. 현재 법정공휴일인 단오절은 3일간만 휴식을 취하게 되지만, 단오절 한 달 전부터 대형상점이나 제과점 등에서는 각종 쫑즈의 특판 행사를 갖는 등 매년 전통명절을 기리고 있다. 따라서 중국단오절이 세계문화유산으로 등재된 현재적 시점에서 국제화, 대형화, 산업화의 길로 빠르게 들어설 것으로 예측된다. 이에 따라 한국, 일본, 월남 등 아시아단오문화권 국가들과 협력하여 단오문화의 상생발전에 기여하기를 기대하는 바이다. Chinese Dragon Boat Festival was registered in the Representative List of UNESCO Masterpieces of the Oral and Intangible Heritage of Humanity in 2009. Chinese Dragon Boat Festival is not passed down from the seasonal customs, but originated from the combination of Changjiang River Culture of Changjiang River Valley and relics of Qu Yuan who was the patriotic poet in Chu State of Warring States Period. Chinese Dragon Boat Festival, a traditional festival that received love from the Chinese, has a history of over two thousand years, and various of activities and research on it have been held recently. In the days of Chinese Dragon Boat Festival in 2010 which has been the national legal holiday 2010 International Conference on Customs of Chinese Dragon Festival which scholars from many Asian countries participated in was held in ]iaxing, ]ingzhou and other cities. During the same period a academic conference which was under joint auspices of International Academic Conference on Asian Folklore Culture and Gangneung Danoje Festival Committee was held in Gangneung of Korea. Like this, the competitive research activities on Dana Festival culture were held in both Korea and China during the same period. Today though Drgon Boat Festival has been the national legal holidays of three days, some activities such as special sales of zongzi were held in megastores or bakeries a month ago to commemorate the yearly festival. According to this it can be estimated that .Chinese Dragon Boat Festival which has just been registered as a world heritage will be international, large, and industrialized soon. Therefore, it can be expected that those countries in Asian Dano Cultural Area such as Korea, Japan, Vietnam will unite to make mutual contributions to the development of Dano culture.

결함허용 양자컴퓨터 시스템에서 기저상태 추출 알고리즘의 동작성능 분석

장아름(Ah-Reum Jang),최병수(Byung-Soo Choi) 대한전자공학회 2016 대한전자공학회 학술대회 Vol.2016 No.6

The purpose of this study is to analyze the performance of a computational science algorithm (ground state estimation algorithm) on a quantum computer. For this study, we calculate the device-level quantum resource requirement with a fault-tolerant quantum computation model. From the quantum compiling to the device-level execution, we measure the increase of the number of gates or steps. After this study, we realize that the current fault-tolerant quantum computation model still has lots of problems which makes uncertain the quantum computational power.

계통 연계형 유도 모터의 회전자 시정수 추정 방안

장푸름(Poo Reum Jang),황대연(Dae Yeon Hwang),노용수(Yong-Su Noh),현병조(Byong Jo Hyon),최준혁(Jun-Hyuk Choi) 전력전자학회 2023 전력전자학술대회 논문집 Vol.2023 No.7

중국 가융장족(嘉絨藏族)의 산간취락 연구

장아름(A-reum Jang) 아시아강원민속학회 2013 江原民俗學 Vol.27 No.-

가융장족은 티벳족의 한 민족으로 2세기 동안 실크로드를 지배하다가 몽골의 칭기즈칸에 의해 멸망한 서하(西夏, 1032~1227) 왕조의 후예라고 전한다. 당나라 때 존재한 동녀국(東女國)으로도 알려진 가융장족들의 풍부한 고고유적, 민속자원 가운데 장족건축의 절정인 장채(藏寨)와 조루(碉樓)등 취락 구조물은 연구가치가 매우 높다. 또한 고대 중국의 유구한 취락고고(聚落考古, Settlement Archaeology) 잔존물로서 이곳에서는 구석기, 신석기 유물들이 다수 발견되었다. 지금부터 5,500년 전 석기문화를 형성한 가융장족의 선조들이 고대취락을 형성하여 약 3천 년 전부터 이곳으로 이주하여 거주했을 것으로 추정하고 있다. 이들의 석조취락은 중국의 6대 고대촌락이라는 명성을 가지고 있으며, 목조가옥과 달리 그 전통이나 형식에서 독창성을 지니고 있다. 이것은 장족문화의 범주에 들어가지만, 특별히 가융장족만의 고유한 문화전통을 유지하고 있다는 점에서 그 가치가 높다. 이들은 3천 년 전부터 이곳에서 집단취락을 형성한 것으로 고고유물을 통해서 확인되었다. 본고는 아시아의 산간민속의 하나로서 단파 가융장족의 취락구조물을 소개하고, 미인곡(美人谷)의 특징을 논하고자 하였다. It is known that Jiāróng Zàngzú, an ethnic group of Tibetan, is the descendants of Xi Xia Dynasty that ruled Silk Road for 2 centuries and ruined by Jinghis Khan of Mongolia. The structures of settlement such as Zàngzhài (藏寨) and Zhoru (碉樓) that showed the peak of architecture of Zàngzú had high value of research among abundant archaeological sites and folklore resources of Jiāróng Zàngzú, known as Dongyeoguk (東女國) that was existed in Tang Dynasty. Here, there were found Paleolithic and Neolithic relic as remains of settlement archaeology (聚落考古) in ancient China. It was assumed that the ancients of Jiāróng Zàngzú who established Neolithic culture 5,500 years ago and moved into here approximately 3,000 years ago. These stone settlements had reputation of the Sixth ancient Chinese village and the tradition and shape were unique, contrary to wooden houses. Even thought it was included in the range of Zàngzú’s culture, it was valuable with the fact that it maintained its unique cultural tradition of Jiāróng Zàngzú. It was investigated through archaeological remains that they established the group settlement in here 3,000 years ago. This study introduced the structure of settlement of Jiāróng Zàngzú in Danba as one of mountain folklore in Asia and discussed the characteristics of Miingok (美人谷).

비누풀 잎 추출물로부터 천연 계면활성제 개발

장아름(A Reum Jang),김효정(Hyo Jeong Kim),김광수(Kwang Soo Kim),박은경(Eun Kyung Park) 한국생물공학회 2013 KSBB Journal Vol.28 No.3

In this study, saponin content of extract from modified preconditioning process was investigated in Saponaria officinalis L. for cosmetic natural surfactant. Saponin content in steamed leaves from S. officinalis L. was about three times more than that in dried leaves (tea saponin and quillaja saponin). And saponin extracts from steamed leaves was excellently shown in both forming force and forming stability. In emulsion activity, saponin extracts from steamed leaves had a similar level to quillaja saponin and tea saponin. Saponin extracts from steamed leaves in S. officinalis L. showed nontoxic effect below in 1,000 μg/mL of concentration and dosedependent inhibition of NO production. From the experiment, the extracts of S. officinalis L. showed good cosmetic agent.

보문 : 피겨스케이팅 의상디자인의 내용분석연구

장아름 ( A Reum Jang ),이명희 ( Myoung Hee Lee ) 한국의류학회 2011 한국의류학회지 Vol.35 No.2

This study examines the design characteristics of figure skating costumes by a content analysis of their design elements. The content analysis method for the study was used based on 185 photos of female figure skaters. A total of 218 coding units in 15 categories were used. In the category of color, unicolor costumes were the mainstay and represented 48.11% of the total costumes. Black costumes showed the highest rate (13.51%), followed by red (7.57%) and blue (7.03%). In the dual-color costumes, combinations of red and black and white and black, represented 4.32% of all costumes. A camisole was the most popular type of neckline (20.54%). Stand collars with neck decorations were found in 5.95% of the costumes. In addition, 98.2% of all figure skating costumes had decorations (crystal beads 21.86% were the most frequently used decoration type), 65.41% exposed all the shoulders and arms, 70.81% of the costumes did not have sleeves, 5.41% of the costumes had arm decorations, and 3.78% had wrist decorations. In the analysis of the hem of skirts, 32.40% had a curved line, 30.73% had a straight line, and 15.08% had an unrecognizable form. In general, the figure skating costumes have stand collars with neck decorations, arm and wrist decorations, and irregular skirt hems that are not found in everyday dresses. To emphasize and intensify a theatrical effect, the costumes were fabulously decorated with spangles, crystal beads, feathers, and lace; black, red, and blue were frequently used. The skirts had frills, fringe, flared lines, and beads on them to reflect the stage lights and emphasize movements.

LLC 컨버터 출력 캐패시터를 고려한 수정된 전압이득

장푸름(Poo Reum, Jang),남광희(Kwnam Hee, Nam) 전력전자학회 2018 전력전자학술대회 논문집 Vol.2018 No.11