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서성원(Seongwon Seo),송은재(Eunjae Song),이동기(Donggi Lee),류동준(Dong June Ryu),남광우(Kwang Woo Nam) 대한공간정보학회 2022 한국공간정보학회 학술대회 Vol.2022 No.5
사거리 등에 설치된 교통 카메라는 도로상에 이동하는 차량과 사람에 대한 모든 정보를 영상으로 포함하고 있으며, 도시의 도처에 설치된 카메라로부터 수집되는 다양한 정보들이 안전한 도시를 위해 중요한 교통정보 인프라의 역할을 하고 있다. 그러나 인력에 의해 모든 정보를 계속적으로 감시하는 한계가 있으며, 다양한 복합적 이상 상황을 파악하는 것은 불가능하였다. 최근 기술의 발전으로 교통 카메라 모니터링 시스템들이 딥러닝 기반의 영상 인식 기술들과 결합하기 위해 다양한 연구가 시도되고 있다. 이 논문은 딥러닝 기반의 교통 영상 분석과 시간 통계 분석 가시화 방안을 제안하고 있다. 교통 카메라에서 수집되는 영상을 딥러닝 기술을 이용하여 인식하고, 이 인식한 정보들을 시간상에서 통계적으로 가시화 함으로서 교통정보 관련 의사결정권자가 일반적인 딥러닝 인식 모니터링 시스템에서 파악할 수 없는 다양한 정보를 분석할 수 있다는 점에서 다른 시스템과 차별성이 있다.
Effects of different parities on productive performance of lactating sows
송민호,김도명,최규명,서성원,Song, Minho,Kim, Do-Myung,Choi, Kyu-Myung,Seo, Seongwon Institute of Agricultural Science 2012 Korean Journal of Agricultural Science Vol.39 No.3
Fast recovery of feed intake and milk production are very important in the management of lactating sows because they are directly related to sow and litter performance. It is also known that parity is one of factors affecting feed intake and milk yield during lactation. Therefore, the objective of this study was to evaluate effects of different parities on productive performance of lactating sows fed diets containing different levels of DDGS. A total of 245 sows were divided into 3 parity groups of 1 to 2, 3 to 5, and over 5 parities. Within each parity group, sows were allottedto 1 of 4 dietary treatments that were prepared by inclusion of 0, 10, 20, and 30% DDGS in lactation diets. Diets were fed to sows during lactation. Sows with parities 1-2 had lower (p < 0.05) initial sow body weight, sow feed intake, sow weight change, and sow backfat change during lactation than sows with parities 3-5 as well as parities over 5. However, sows with parities over 5 had lower (p < 0.05) litter size at weaning, litter birth weight, litter weaning weight, and piglet average daily gain and higher pre-weaning mortality than sows with parities 1-2 as well as parities 3-5. In conclusion, parity influences productive performance of lactating sows.
천룡(Ryong Chun),서성원(Seongwon Seo),박종수(Jong-Soo Park) 충남대학교 농업과학연구소 2012 농업과학연구 Vol.39 No.2
Accurate estimation of milk production cost is very important for dairy farmers in establishing strategies for business management (e.g. planning a program for milk production, deciding the size of business and investment, determining the milk price for sale). Since the estimated cost of milk production is used as an important index to determine the basal price of milk in Korea, there has been much interest and debate on the method used to estimate milk production cost among the stakeholder. This study was thus carried out to identify problems in the current methodology for estimating cost of milk production, and to find a better way to improve it. We propose several alternatives and better ways to improve the current method for estimating cost of milk production. Estimation of the income and cost per head should be based on the number of cattle converted to grown cows. Cost estimation per liter of milk should be made for both whole milk and 3.4% milk fat corrected milk. The value of purchased cows and raised replacement heifers should be the same as their market value. The productive life span of cows should be less 4 years, and the terminal or salvage value of cows needs to be 30 to 40% less than her initial value. When calculating depreciation of cows over the productive life span, however, the salvage value should be 0 or 1 Korean won. On calculating labor costs, the farm labor wage corresponding to the average wage of nonfarm industrial workers should be assumed. Beside of these, better estimation procedures for other items are also given. The proposed methods from this study should improve the accuracy of estimation of milk production cost and help to achieve consensus among the stakeholder.
유지방율과 유단백율 증감이 사료비에 미치는 영향 : 시뮬레이션 모델을 이용한 접근
이세영(Se-Young Lee),배귀석(Gui-Seck Bae),박종수(Jong-Soo Park),서성원(Seongwon Seo) 충남대학교 농업과학연구소 2010 농업과학연구 Vol.37 No.2
This study was conducted to investigate effect of changes in target fat and protein contents in milk on feed cost using a simulation modeling approach based on the 2001 dairy NRC. Two simulations were done; simulation I had a limitation (up to 20%), but simulation II had no limitation for the use of cottonseed hull in a diet. Using commonly used feed ingredients in Korea, we formulated least cost diets that meet nutrient requirement of a lactating dairy cow producing 36 ㎏ of milk with combinations of 0.1% decrease or 0.1% increase in target milk fat or protein, respectively, from the national average milk fat (4.0%) and milk protein (3.1%). The contents of alfalfa and corn in a least-cost diet were decreased and those of tall fescue, whole cottonseed and rapeseed meal were increased with decreasing fat and/or increasing protein in milk. Scenarios that decreased target milk fat percentage from 4.0% to 3.9% reduced feed cost by 2 won per ㎏. Due to decrease in feed intake, daily feed cost was even more reduced (136 won per head) by decreasing target milk fat percentage. Increase in target milk protein percentage from 3.1% to 3.2% reduced feed cost by 6 won per ㎏. Among scenarios simulated, the least feed cost was obtained in scenario aimed for 3.9% fat and 3.2% of protein in milk. We conclude that a feeding practice for increasing milk protein percentage does not directly increase feed cost. In addition, feeding practices that increase protein content in milk is expected to improve economic life-span and reproductive performance of dairy cows.
Effects of different parities on productive performance of lactating sows
Minho Song(송민호),Do-Myung Kim(김도명),Kyu-Myung Choi(최규명),Seongwon Seo(서성원) 충남대학교 농업과학연구소 2012 농업과학연구 Vol.39 No.3
Fast recovery of feed intake and milk production are very important in the management of lactating sows because they are directly related to sow and litter performance. It is also known that parity is one of factors affecting feed intake and milk yield during lactation. Therefore, the objective of this study was to evaluate effects of different parities on productive performance of lactating sows fed diets containing different levels of DDGS. A total of 245 sows were divided into 3 parity groups of 1 to 2, 3 to 5, and over 5 parities. Within each parity group, sows were allottedto 1 of 4 dietary treatments that were prepared by inclusion of 0, 10, 20, and 30% DDGS in lactation diets. Diets were fed to sows during lactation.Sows with parities 1-2 had lower (p < 0.05) initial sow body weight, sow feed intake, sow weight change, and sow backfat change during lactation than sows with parities 3-5 as well as parities over 5. However, sows with parities over 5 had lower (p < 0.05) litter size at weaning, litter birth weight, litter weaning weight, and piglet average daily gain and higher pre-weaning mortality than sows with parities 1-2 as well as parities 3-5. In conclusion, parity influences productive performance of lactating sows.
Seon Young Park(박선영),Hyemin Kwon(권혜민),Jun Seob Kim(김준섭),Seongwon Seo(서성원),Ji Hyung Kim(김지형) 한국미생물학회 2022 미생물학회지 Vol.58 No.2
Salmonella enterica subsp. enterica serovar Enteritidis is a major food-borne pathogen responsible for severe economic loss in the poultry industry. We report the complete genome sequence of the novel bacteriophage (phage) vB_SenAt-pSL2 infecting Salmonella enterica subsp. enterica serovar Enteritidis KCTC 82777 isolated from Korean broiler chickens. The genome comprised a linear double-stranded DNA of 44,304 bp with 47.4% G + C content and 54 ORFs. Genome-based comparison revealed that the phage was closely related to Zindervirus and distinguished by having the largest genome in the genus. The high nucleotide similarity of the predicted tail fiber and spike proteins in vB_SenAt-pSL2 with other broad-host-range phages in Zindervirus suggests its potential to infect diverse Salmonella serotypes. Based on these results, the newly isolated Salmonella phage vB_SenAt-pSL2 is a new member of the genus Zindervirus and its genomic information provides insights into the biodiversity and taxonomy of Autographiviridae.