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Analysis of Management Performance of Bottle Cultivation in Mushroom Farm
Guhyun Jung,Myoung Hee Jeon,Jin Hong Lee,Yun-Hae Lee,Hae-Kil Lee 한국버섯학회 2017 버섯 Vol.21 No.2
In recent 10 years, mushroom cultivation area and number of cultivators have decreased, but mushroom production tends to increase. This shows that mushroom cultivation is being transformed from log and bed cultivation to bottle cultivation using automated facilities with high productivity per unit area. The bottle cultivation is possible to mechanized and automated, which can save manpower, less damage to pests, can be cultivated throughout the year, and is uniform in quality and advantageous for mass production. However, the investment in production facilities and farm materials is very large compared to the production of logs and bed cultivars, which can lead to large losses in the case of failure to grow. Therefore, it is necessary for the farmers who want to start the bottle cultivation to make careful management decisions by carefully examining the investment cost, the operating cost, and the expected income that are put into the bottle cultivation system. This study was conducted to analyze the management performance of bottle cultivation in mushroom farm and use it as farming decision making data. As a result of analysis of the management performance through farmers' survey, it was found that such as cost of spawn, substrate materials, other material, employment effort, and fuels & electricity power cost accounted for a large proportion of the cost of bottle cultivation.
Developing a decision support system for selecting new crops
Jung, Guhyun,Jeon, Myounghee,Lee, Jinhong,Park, Heundong,Lee, Seyong,Kim, Joonyong Korean Society of Food and Agricultural Informatio 2018 Agribusiness and Information Management Vol.10 No.2
Due to changes in the agricultural market environment and both overseas and domestic farming conditions, uncertainties in agricultural production and management are becoming greater. Hence, there is a stronger need for farmers to choose crops in the optimal condition. This research aims to introduce the result and process of developing a decision support system for selecting crops, aimed to assist farmers in selecting the optimal crops most suitable in the given situation. There are basically three main factors to consider in the decision-making process for farmers when selecting a crop to introduce to their lands. First of all, one must consider how much profit crop A will produce when it is cultivated. Secondly, one must consider which crop to cultivate in order to earn a certain amount of profit. Thirdly, one must consider what is the best way to maximize Farm A's business profit. For instance, a farm may have land as its resource, and one must research which location, type of crop, level of technology, and so forth, to maximize profit.This research creates a database of the profitability of a total of 180 crop types by analyzing Rural Development Administration's survey of agricultural products income of 115 crop types, small land profitability index survey of 53 crop types, and Statistics Korea's survey of production costs of 12 crop types. Furthermore, this research presents the result and developmental process of a web-based crop introduction decision support system that provides overseas cases of new crop introduction support programs, as well as databases of outstanding business success cases of each crop type researched by agricultural institutions.
Developing a decision support system for selecting new crops
Guhyun Jung,Myounghee Jeon,Jinhong Lee,Heundong Park,Seyong Lee,Joonyong Kim 한국농식품정보과학회 2018 Agribusiness and Information Management Vol.10 No.2
Due to changes in the agricultural market environment and both overseas and domestic farming conditions, uncertainties in agricultural production and management are becoming greater. Hence, there is a stronger need for farmers to choose crops in the optimal condition. This research aims to introduce the result and process of developing a decision support system for selecting crops, aimed to assist farmers in selecting the optimal crops most suitable in the given situation. There are basically three main factors to consider in the decision-making process for farmers when selecting a crop to introduce to their lands. First of all, one must consider how much profit crop A will produce when it is cultivated. Secondly, one must consider which crop to cultivate in order to earn a certain amount of profit. Thirdly, one must consider what is the best way to maximize Farm A’s business profit. For instance, a farm may have land as its resource, and one must research which location, type of crop, level of technology, and so forth, to maximize profit.This research creates a database of the profitability of a total of 180 crop types by analyzing Rural Development Administration’s survey of agricultural products income of 115 crop types, small land profitability index survey of 53 crop types, and Statistics Korea’s survey of production costs of 12 crop types. Furthermore, this research presents the result and developmental process of a web-based crop introduction decision support system that provides overseas cases of new crop introduction support programs, as well as databases of outstanding business success cases of each crop type researched by agricultural institutions.
Glomus Tumor of the Stomach: A Clinicopathologic Analysis of 10 Cases and Review of the Literature
( Guhyun Kang ),( Hee Jung Park ),( Ji Yeon Kim ),( Dongil Choi ),( Byung Hoon Min ),( Jun Haeng Lee ),( Jae J. Kim ),( Kyoung Mee Kim ),( Cheol Keun Park ),( Tae Sung Sohn ),( Sung Kim ) 대한소화기기능성질환·운동학회 2012 Gut and Liver Vol.6 No.1
Background/Aims: Gastric glomus tumors are extremely rare, and presurgical confirmation is often impossible. The identification of clinical and radiologic characteristics of this tumor type is important for preoperative diagnosis and treatment planning. Methods: In this study, we analyzed 10 cases of gastric glomus tumors resected at a single institute over 9 years. Results: Eight of the patients were men and 2 were women, with a mean age of 49 years. Five patients presented with abdominal discomfort or pain, 1 presented with anemia, and the remaining 4 cases were found incidentally during endoscopic examinations. The most common location of the tumor was the antrum (n=7), followed by the low (n=2) and high body (n=1). Although the endoscopic ultrasonography fi ndings were variable, contrast-enhanced computed tomography generally showed a strong homogeneous enhancement. The resected tumors were well-demarcated solid masses with sizes ranging from 1.0 to 3.6 cm. Microscopically, the masses were composed of abundant vascular channels with clusters of uniform and round glomus cells. There was no evidence of recurrence after complete surgical resection. Conclusions: Gastric glomus tumors are unusual, distinct lesions that should be considered in the differential diagnosis of a gastric submucosal mass. Unlike their deep soft tissue counterparts, most glomus tumors in the stomach are benign. (Gut Liver 2012;6:52-57)
Jung-MeeKim,YounmieJin,Chang-GuHyun,Jong-HeeKim,Hong-SubLee,Dae-KyungKang,Dae-JungKang,Tae-YongKim,Joo-WonSuh,Sang-SoonKang,Soon-KwangHong 한국미생물학회 2002 The journal of microbiology Vol.40 No.3
A 4.8-kb DNA fragment encoding the P-450 type hydroxylase and ferredoxin genes was cloned from Pseudonocardia autotrophica IFO 12743 that can convert vitamin D3 into its hydroxylated active forms. In order to isolate the P-450 gene cluster in this organism, we designed PCR primers on the basis of the regions of an oxygen binding site and a heme ligand pocket that are general characteristics of the P-450 hydroxylase. Sequencing analysis of the BamHI fragment revealed the presence of four complete and one incomplete ORFs, named PauA, PauB, PauC, and PauD, respectively. As a result of computer-based analyses, PauA and PauB have homology with enoyl-CoA hydratase from several organisms and the positive regulators belonging to the tetR family, respectively. PauC and PauD show similarity with SuaB/C proteins and ferredoxins, respectively, which are composed of P-450 monooxygenase systems for metabolizing two sulfonylurea herbicides in Streptomyces griseolus PauC shows the highest similarity with another CytP-450Sca2 protein that is responsible for production of a specific HMG-CoA reductase inhibitor, pravastatin, in S. carbophilus. Cultures of Streptomyces lividans transformant, containing the P-450 gene cluster on the pWHM3 plasmid, was unable to convert vitamin D3 to its hydroxylated forms.
DataHalo: 개인화 가능한 스마트폰 알림 정보 앰비언트 시각화 시스템
한구현(GuHyun Han),정재훈(Jae Hun Jung),김영호(Young Ho Kim),서진욱(Jinwook Seo) 한국HCI학회 2020 한국HCI학회 학술대회 Vol.2020 No.2
기존의 스마트폰 알림 시스템 하에서 사용자는 알림정보를 주도적으로 관리하기 어렵다. 사용자는 매일 확인해야하는 수많은 알림 중 실제로 가치 있는 정보를 추리기 어렵고, 내용의 중요도와 관계없이 같은 형태로 정보를 확인해야 하며, 자신에게 계속 중요한 정보라도 한 번 확인 후에는 휘발해버리므로 지속적인 정보상호작용이 불가능하다. 이 연구는 위 문제를 완화하기 위해 새로운 알림 정보 시각화 시스템인 DataHalo 를 제안하였다. 스마트폰 사용자는 이 시스템을 활용하여 알림 정보를 직접 모델링할 수 있고, 시각적 표현방법을 결정할 수 있으며, 직접 정한 수명까지 생성된 시각화와 계속 상호작용할 수 있다. 안드로이드 환경의 오픈 소스 런처를 개조하여 시스템을 프로토타이핑 한 뒤, 9 명의 일반 스마트폰 사용자를 대상으로 정성적인 사용자 실험을 진행했다. 이를 통해 참가자들이 원하는 다양한 알림 정보 상호작용 시나리오를 구체화할 수 있었고, 우리가 제안한 시스템이 이 문제를 적절하게 해결할 수 있음을 확인했다.
브로멜라인이 캡슐화 된 W/O/W 이중 에멀젼을 적용한 삼치 연화 및 품질 평가
강구현 ( Guhyun Kang ),이상윤 ( Sangyoon Lee ),김효태 ( Hyo Tae Kim ),이지선 ( Jiseon Lee ),고은영 ( Eun Young Ko ),최미정 ( Mi-jung Choi ) 한국산업식품공학회 2021 산업 식품공학 Vol.25 No.1
In this study, spray-dried double emulsion loaded bromelain was applied to Japanese Spanish mackerel fillets to develop fish-type, elderly-friendly foods. Japanese Spanish mackerel, treated with spray-dried double emulsions, were stored at 4℃ for 24 h. For the characterization of emulsion particles, the particle size, ζ-potential, and morphology were determined. The color, TBARS, VBN, TMA, hardness, and adhesiveness of fish fillets treated by emulsion were measured for physicochemical properties. All the particle sizes of spray-dried emulsion were decreased while their double emulsion structure was maintained. Spray-dried emulsion reduced the color difference of fish fillets and did not catalyze lipid oxidation and protein decomposition. Values of TBA, VBN, and TMA of all fish did not exceed 0.5 mg MDA/kg, 30 mg/100 g, and 10 mg/100 g, respectively, which are considered edible limits regardless of bromelain or emulsion application. Bromelain modified fish fillets' hardness and adhesiveness to be suitable for elderly food, although it was encapsulated in the emulsion. Thus, spray-dried fish oil W/O/W double emulsion-loaded bromelain can be applied as a fish tenderizer, and this study’s results can be utilized to develop elderly-friendly food.