• Animal Bioscience
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• 제35권2호
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• pp.299-307
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• 2022

Objective: The objective of this study was to determine the effects of different social ranking order (SRO) and the enrichments (perch and dust-bath) allocation (EA) on behavior of laying hens in furnished cages. Methods: Total experimental period was 4 weeks. There were 216 Hy-line brown layers beak-trimmed at 1 d of age and selected randomly at 14 weeks of age from a commercial farm, and randomly divided into 36 cages with 6 hens in each cage. High enrichments (perch and dust-bath) allocation (HEA) and low enrichments (perch and dust-bath) allocation (LEA) were provided. Video observations of behavior were obtained from the focal hens between 14 and 18 weeks of age and perching, dust-bathing and other general behaviors of the hens with different social orders were measured. Results: Perching behavior of high SRO hens (HSR) were significantly higher than that of medium SRO hens (MSR), and that of the MSR were significantly higher than that of low SRO hens (LSR) (p<0.01), except for lying on perch (p>0.05). The hens in the high EA cage (HEAC) showed more lying behavior on perch than those in the low EA cage (LEAC) (p<0.01). The different SRO and EA did not affect dust-bathing behavior except vertical wing-shaking behavior (p<0.05). The LEA did not affect general behaviors (p>0.05), except standing and preening behaviors (p<0.01 and p<0.05), of which the hens in the HEAC showed less standing (p<0.01) and more preening behavior than the hens in the LEAC. Conclusion: The SRO of laying hens has a significant effect on the perching behaviors, but SRO and EA have little effect on dust-bathing and general behaviors.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제10권5호
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• pp.187-194
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• 2021

사람의 행동인식(Action Recognition)은 사람의 관절 움직임에 따라 어떤 행동을 하는지 인식하는 것이다. 이를 위해서 영상처리에 활용되는 컴퓨터 비전 태스크를 활용하였다. 사람의 행동인식은 딥러닝과 CCTV를 결합한 안전사고 대응서비스로서 안전관리 현장 내에서도 적용될 수 있다. 기존연구는 딥러닝을 활용하여 사람의 관절 키포인트 추출을 통한 행동인식 연구가 상대적으로 부족한 상태이다. 또한 안전관리 현장에서 작업자를 지속적이고 체계적으로 관리하기 어려운 문제점도 있었다. 본 논문에서는 이러한 문제점들을 해결하기 위해 관절 키포인트와 관절 움직임 정보만을 이용하여 위험 행동을 인식하는 방법을 제안하고자 한다. 자세추정방법(Pose Estimation)의 하나인 AlphaPose를 활용하여 신체 부위의 관절 키포인트를 추출하였다. 추출된 관절 키포인트를 LSTM(Long Short-Term Memory) 모델에 순차적으로 입력하여 연속적인 데이터로 학습을 하였다. 행동인식 정확률을 확인한 결과 "누워있기(Lying Down)" 행동인식 결과의 정확도가 높음을 확인할 수 있었다.

• Animal Bioscience
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• 제37권6호
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• pp.1130-1139
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• 2024

Objective: The daily maximum temperature and seawater level continuously increase as global warming continues. We examined the adaptability and production performance of heat-stressed goats with a supply of low-saline drinking water. Methods: Twelve Kacang and Kacang Etawah cross goats were exposed to two climatic conditions (control, 25℃ to 33℃, 83% relative humidity [RH], temperature humidity index [THI]: 76 to 86; and hot environment, 26℃ to 39℃, 81% RH, THI: 77 to 94) and two salt levels in drinking water (0% and 0.4% NaCl). The experimental design was a Latin Square (4×4) with four treatments and four periods (28 days each). Results: Temperature of the rectal, skin, and udder, and respiration rate rose, reached a maximum level on the first day of heat exposures, and then recovered. Plasma sodium rose at 0.4% NaCl level, while the hot environment and salinity treatments increased the drinking water to dry matter (DM) intake ratio. Water excretion was elevated in the hot environment but lowered by the increase in salinity. Total lying time increased, whereas change position frequency decreased in the hot condition. Lying and ruminating and total ruminating time increased and explained the enhanced DM digestibility in the hot conditions. Conclusion: The goats exhibited a high level of plasma sodium as salinity increased, and they demonstrated physiological and behavioral alterations while maintaining their production performances under increasing daily maximum temperatures.

• 한국안광학회지
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• 제18권4호
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• pp.449-456
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• 2013

목적: 렌즈 착용자의 자세가 변했을 때 각막이심률 및 각막형상이 토릭소프트렌즈의 회전 양상에 미치는 영향을 알아보고자 하였다. 방법: 각막난시 -1.00 D의 직난시를 가진 20대 남녀 41안의 이심률을 측정하고 전체난시량에 따라 토릭소프트렌즈를 피팅하였다. 정자세와 누운 자세일 때의 토릭소프트렌즈의 회전을 슬릿램프에 장착된 카메라를 이용하여 촬영하고 분석하였다. 결과: Accelerated stabilization 디자인의 토릭소프트렌즈는 이심률에 관계없이 대부분 누운 방향인 귀쪽으로 회전하였으며 이심률이 큰 경우와 비대칭나비형 각막에서는 코쪽으로 회전하는 경우도 있었다. 렌즈착용 직후 정자세와 누운 자세에서 회전양과 이심률은 상관관계가 없었으나 일정 시간동안 누운 자세로 있는 경우는 이심률이 큰 각막에서 회전양이 더 컸다. 회전속도는 누운 자세로 변화된 직후부터 속도가 감소하였으며, 이심률에 따른 큰 차이는 없었다. 누운 자세로 변화된 직후 대칭나비형과 비대칭나비형의 경우는 타원형 각막에 비해 회전양이 더 크게 증가하였으며 일정 시간이 지난 후에도 마찬가지였다. 누운 자세에서의 렌즈회전속도는 다른 각막형태에 비해 비대칭나비에서 가장 느렸다. 결론: 본 연구를 통하여 자세변화시 토릭소프트렌즈의 회전 양상은 각막이심률 및 각막형상에 의해 영향을 받는다는 것을 알 수 있었다. 따라서 토릭소프트렌즈 피팅 및 디자인 개발 시에 이에 대한 고려가 이루어져야 할 것으로 보인다.

• 대한수학회보
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• 제44권3호
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• pp.461-473
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• 2007

For integral self-reciprocal polynomials P(z) and Q(z) with all zeros lying on the unit circle, does there exist integral self-reciprocal polynomial $G_r(z)$ depending on r such that for any r, $0{\leq}r{\leq}1$, all zeros of $G_r(z)$ lie on the unit circle and $G_0(z)$ = P(z), $G_1(z)$ = Q(z)? We study this question by providing examples. An example answers some interesting questions. Another example relates to the study of convex combination of two polynomials. From this example, we deduce the study of the sum of certain two products of finite geometric series.

• Kyungpook Mathematical Journal
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• 제45권2호
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• pp.153-159
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• 2005

In the present paper, we obtain two Theorems connecting the unified fractional integral operators and the Laplace transform. Due to the presence of a general class of polynomials, the multivariable H-function and general functions ${\theta}$ and ${\phi}$ in the kernels of our operators, a large number of (new and known) interesting results involving simpler polynomials (which are special cases of a general class of polynomials) and special functions involving one or more variables (which are particular cases of the multivariable H-function) obtained by several authors and hitherto lying scattered in the literature follow as special cases of our findings. Thus the Theorems obtained by Srivastava et al. [9] follow as simple special cases of our findings.

• Journal of Acupuncture Research
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• 제17권4호
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• pp.1-4
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• 2000

For checking the exact acupuncture points of Governor Vessel(GV) at lumbar regions, five kinds of method were used to 100 patients who have treated in outpatient in our hospital. They were attached distinguishable stainless steel by the methods. And those were compared with X-ray measuring. As a results, the best method to check Yoyang-gwan(GV3, Ya~oyanggua~n) was the way of using both iliac crests at lateral lying position.

• 한국CDE학회논문집
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• 제1권1호
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• pp.76-83
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• 1996

A three dimensional FE mesh generation scheme based on mapping approach is proposed in this study. A volume in Eucledian space is represented by composite hyperpatches which are piecewise cubic functions in parameters u, v, w. A key idea in the proposed approach is that I sampled grid data points lying only on the boundary surfaces are needed for the shape representation. Inner points which are necessary to form a hyperpatch are internally generated by Coons patches. This approach is most appropriate for the shapes which are compositions of hexahedronlike shapes and also severely curved.

• Bulletin of the Korean Chemical Society
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• 제32권5호
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• pp.1519-1526
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• 2011

A previous study (Lee, C. W. J. Phys. B 2010, 43, 175002) that isolated the overlapping resonances in the photoionization spectra using multichannel quantum defect theory (MQDT) in systems involving a single open channel was extended to manage many open channels when the closed channels are degenerate. The theory was applied to the dipole allowed J = 1$^{\circ}$ spectra from the ground state with excitation energies lying between the lowest ionization thresholds for rare gas atoms, Ar, Kr, and Xe, and also for group IV elements, Ge, Sn and Pb.

• Bulletin of the Korean Chemical Society
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• 제33권3호
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• pp.803-808
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• 2012

We have implemented two-component spin-orbit relativistic effective core potential (SOREP) methods in an all-electron relativistic program DIRAC. This extends the capacity of the two-component SOREP method to many ground and excited state calculations in a single program. As the test cases, geometries and energies of the small halogen molecules were studied. Several two-component methods are compared by using spin-orbit and scalar relativistic effective core potentials. For the $I_2$ molecule, excitation energies of low-lying excited states agree well with those from corresponding all-electron methods. Efficiencies in SOREP calculations enhanced by using symmetries are also discussed briefly.