• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 춘계학술대회
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• pp.453-454
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• 2015

IoT는 전 세계적으로 엄청난 부가가치를 창출할 것으로 기대되는 분야이다. 게임분야에서도 IoT를 기반으로 다양한 플랫폼을 이용한 게임이 등장하고 있다. 본 연구에서는 IoT기반의 플랫폼으로 개발되고 국내에서 출시된 게임의 사례를 조사하고 연구하고자 한다. 연구방법으로는 IoT에 관련된 기존의 문헌을 연구하여 특징을 파악하고 이를 적용한 게임을 중심으로 IoT가 어떻게 응용되었는지 사례조사를 하였다. 본 연구는 향후 IoT기반 게임 개발의 가이드라인이 될 것이며, IoT기반의 게임 개발방향을 제시할 것으로 기대된다.

• Investigative Magnetic Resonance Imaging
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• 제22권2호
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• pp.86-93
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• 2018

Purpose: Imaging plays a significant role in diagnosing leptomeningeal metastases. However, the most appropriate sequence for the detection of leptomeningeal metastases has yet to be determined. This study compares the efficacies of contrast-enhanced T2 fluid attenuated inversion recovery (FLAIR) and contrast-enhanced 3D T1 black-blood fast spin echo (FSE) imaging for the detection of leptomeningeal metastases. Materials and Methods: Tube phantoms containing varying concentrations of gadobutrol solution were scanned using T2 FLAIR and 3D T1 black-blood FSE. Additionally, 30 patients with leptomeningeal metastases were retrospectively evaluated to compare conspicuous lesions and the extent of leptomeningeal metastases detected by T2 FLAIR and 3D T1 black-blood FSE. Results: The signal intensities of low-concentration gadobutrol solutions (< 0.5 mmol/L) on T2 FLAIR images were higher than in 3D T1 black-blood FSE. The T2 FLAIR sequences exhibited significantly greater visual conspicuity scores than the 3D T1 black-blood sequence in leptomeningeal metastases of the pial membrane of cistern (P = 0.014). T2 FLAIR images exhibited a greater or equal extent (96.7%) of leptomeningeal metastases than 3D T1 black-blood FSE images. Conclusion: Because of its high sensitivity even at low gadolinium concentrations, contrast-enhanced T2 FLAIR images delineated leptomeningeal metastases in a wider territory than 3D T1 black-blood FSE.

• 한국축산식품학회지
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• 제23권1호
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• pp.9-15
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• 2003

비육후기 돼지(LY $\times$ D, 90 kg 전후) 사료에 C는 대조구로 우지 5%, T1은 우지 3%에 들깨유를 2%우지 대체하였으며, T2는 T1에 비타민 E($\alpha$-tocopheryl acetate)를 250 ppm 첨가하였다. T3는 우지 3%에 오징어유를 2% 우지 대체하였으며, T4는 T3에 비타민 E를 250 ppm 첨가하였다. T5는 우지 3%에 CLA 2% 우지 대체 첨가 급여한 돼지의 생산 및 도체형 질을 조사한 결과는 다음과 같다. 일당 증체량은 T2와 T3가 다른 구들보다 높았으며(P<0.05) 사료요구율은 처리간에 유의적인 차이는 없으나 T2와 T3가 각각 3.71, 3.80으로 다소 양호하였다. 생체에서 등지방두께는 개시 체중시에는 처리간에 유의적인 차이를 보이지 않았으나 출하체중 시에는 C가 다른 처리구들보다 유의적으로 두꺼워 개시체중 대비 출하체중 시의 등지방두께 증가폭 역시 C가 넓었다. 배최장근 단면적은 개시체중 시나 출하체중 시에는 유의적인 차이는 없었으나 증가면에서는 T5가 T2에 비해서 약 2배 정도인 13.35 $\textrm{cm}^2$로 가장 높게 나타났다. 혈액 중 Triglyceride함량은 C가 다른 처리구들보다 높았으며, T3, T4, T5가 유의적으로 낮았다(P<0.05). 총 콜레스테롤 함량은 처리구들간에 유의적인 차이를 보이지 않았으며, 총 콜레스테롤 대비 HDL-콜레스테롤 비율은 비타민 E를 첨가하지 않은 구보다 첨가한 구들이 높게 나타났다. 동맥경화지수(AI: Atherogenic index)는 T3가 가장 높고 T2가 가장 낮았으며, 들깨유와 오징어유에 비타민 E 첨가로 낮아졌다. 도체형질에서 지육율과 등지방두께 및 등급은 처리간에 유의적인 차이를 보이지 않았으나(p>0.05) 등급에 있어 T2는 4.67, C와 T3는 4.29, T1과 T5는 4.00 수준이었다.operational requirements and typical plasma parameters have been determined. Large arrays of individual tiny sources can be used to form large-area, atmospheric-pressure plasma sources. The simplicity of the method and the capability of operation without the need for the usual vacuum system and its associated limitations, provide a highly attractive option for new approaches to many different kinds of plasma applications, including plasma surface modification technologies. Here we review the background work that has been carried out in this new research field.row$물엿으로 제조한 정과의 순으로 red에 가까웠다. b값(Yellowness)은 전처리한 동아 300g에 물 1$\ell$, 물엿 475$m\ell$을 넣고 5시간 동안 제조한 군이 가장 높아 yellow에 가까웠고 전체적으로 물엿$\longrightarrow$설탕과 꿀$\longrightarrow$물엿과 설탕으로 제조한 정과의 순으로 yellow에 가까웠다. 5. 관능검사에서 단단하다고 평가된 정과가 색도에서 적색도가 높았다. 관능검사에서 색이 좋다고 평가된 정과가 색도에서 붉은 빛과 황색을 나타냈다. 관능검사의 단단한 정도(Hardness)와 씹힘성(Chewinwss)은 기계검사의 Texture인 최대절단력(Maximum

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제16권4호
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• pp.327-344
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• 2009

In this paper, we deal with the following system of nonlinear singular boundary value problems(BVPs) on time scale $\mathbb{T}$ $$\{{{{{{x^{\bigtriangleup\bigtriangleup}(t)+f(t,\;y(t))=0,\;t{\in}(a,\;b)_{\mathbb{T}},}\atop{y^{\bigtriangleup\bigtriangleup}(t)+g(t,\;x(t))=0,\;t{\in}(a,\;b)_{\mathbb{T}},}}\atop{\alpha_1x(a)-\beta_1x^{\bigtriangleup}(a)=\gamma_1x(\sigma(b))+\delta_1x^{\bigtriangleup}(\sigma(b))=0,}}\atop{\alpha_2y(a)-\beta_2y^{\bigtriangleup}(a)=\gamma_2y(\sigma(b))+\delta_2y^{\bigtriangleup}(\sigma(b))=0,}}$$ where $\alpha_i$, $\beta_i$, $\gamma_i\;{\geq}\;0$ and $\rho_i=\alpha_i\gamma_i(\sigma(b)-a)+\alpha_i\delta_i+\gamma_i\beta_i$ > 0(i = 1, 2), f(t, y) may be singular at t = a, y = 0, and g(t, x) may be singular at t = a. The arguments are based upon a fixed-point theorem for mappings that are decreasing with respect to a cone. We also obtain the analogous existence results for the related nonlinear systems $x^{\bigtriangledown\bigtriangledown}(t)$ + f(t, y(t)) = 0, $y^{\bigtriangledown\bigtriangledown}(t)$ + g(t, x(t)) = 0, $x^{\bigtriangleup\bigtriangledown}(t)$ + f(t, y(t)) = 0, $y^{\bigtriangleup\bigtriangledown}(t)$ + g(t, x(t)) = 0, and $x^{\bigtriangledown\bigtriangleup}(t)$ + f(t, y(t)) = 0, $y^{\bigtriangledown\bigtriangleup}(t)$ + g(t, x(t)) = 0 satisfying similar boundary conditions.

• 대한수학회지
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• 제37권6호
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• pp.915-927
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• 2000

This paper is concerned with degenerate Volterra equations Mu(t) + ∫(sub)0(sup)t k(t-s) Lu(s)ds = f(t) in Banach spaces both in the hyperbolic case, and the parabolic one. The key assumption is played by the representation of the underlying space X as a direct sum X = N(T) + R(T), where T is the bounded linear operator T = ML(sup)-1. Hyperbolicity means that the part T of T in R(T) is an abstract potential operator, i.e., -T(sup)-1 generates a C(sub)0-semigroup, and parabolicity means that -T(sup)-1 generates an analytic semigroup. A maximal regularity result is obtained for parabolic equations. We will also investigate the cases where the kernel k($.$) is degenerated or singular at t=0 using the results of Pruss[8] on analytic resolvents. Finally, we consider the case where $\lambda$ is a pole for ($\lambda$L + M)(sup)-1.

• Asian-Australasian Journal of Animal Sciences
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• 제15권10호
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• pp.1502-1506
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• 2002

This experiment was conducted to evaluate the effects of the broiler's genotype ($G_t$) and ambient temperature ($T_a$) on performance and core body temperature ($T_core$) of broiler chicks. A factorial arrangement of two $G_t$ (Hubbard and ISA J57 chicks) and two $T_a$ (moderate, $23{\pm}0.5^{\circ}C$ and hot, $33{\pm}0.5^{\circ}C$) were used in this study. Performance data (body weight gain, feed intake and feed:gain ratio) were determined weekly for six weeks. Chicks' $T_core$ was measured using a biotelemetric system between Weeks five and six. Results showed that body weight gain and feed intake were significantly high, and feed:gain ratio was significantly low for Hubbard chicks compared to those of ISA J57 chicks. High $T_a$ significantly reduced weight gain and feed intake. Furthermore, the reduction in body weight gain and feed intake under the hot $T_a$ was more pronounced for Hubbard chicks than those of the ISA J57 chicks resulting in significant $G_t$ by $T_a$ interaction. Chicks grown under moderate $T_a$ had significantly lower $T_core$ than those grown under hot $T_a$. The $T_core$ of the Hubbard chicks was significantly lower than that of the ISA J57 at the moderate $T_a$ while under the hot $T_a$, the magnitude of the change in $T_core$ was more pronounced in Hubbard chicks than that of ISA J57; this resulted in a significant $G_t$ by $T_a$ interaction. The results of this study indicate that chicks with higher potential for growth under thermo-neutral temperature are more susceptible to heat stress than chicks with lower potential for growth. This maybe due, at least in part, to their lower body $T_core$ under moderate temperature and to the lesser ability of these fast growing chicks to regulate their $T_core$ when exposed to heat stress, as was clearly shown on these birds' performance.

• Journal of Animal Science and Technology
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• 제48권6호
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• pp.861-870
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• 2006

본 연구는 발효사료에 대한 보호처리한 vitamin C+E 및 면실의 첨가가 반추위 발효특성과 거세한우의 증체, 혈중 대사물질 및 호르몬 농도에 미치는 영향을 구명하고자 실시하였다. 시험구 처리는 발효사료를 급여하는 T1구와 보호처리한 vitamin C+E 및 면실 첨가 발효사료를 급여하는 T2구의 2처리로 하였다. 사료급여 후 3시간의 반추위 pH는 T1구에 비해 T2구에서 낮았으나(p<0.05), 6 및 9시간에는 T1구에 비해 T2구에서 높았다(p<0.05). 사료급여 후 12시간 동안 반추위 ammonia 농도는 T1구에 비해 T2구에서 높았다(p<0.05). 사료급여 후 3시간의 acetate, propionate, butyrate 및 total-VFA 농도는 T1구에 비해 T2구에서 높았으나(p<0.05), 9 및 12시간에는 T1구에 비해 T2구에서 낮았다(p<0.05). 일당증체량과 혈중 대사물질 및 호르몬의 농도는 처리간에 차이가 없었다. 이상의 결과에서 발효사료에 대한 보호처리한 vitamin C+E 및 면실의 첨가는 반추위 pH, ammonia 및 휘발성지방산 농도에는 영향을 미치지만, 거세한우의 증체와 혈중 대사물질 및 호르몬 농도에는 영향을 미치지 않는 것으로 판단된다

• Asian-Australasian Journal of Animal Sciences
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• 제17권3호
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• pp.394-400
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• 2004

To investigate the efficacy of alternatives to antibiotics, the present study was conducted to compare the effects of antibiotic, lactic acid, a blend of commercial essential oils (EOs) and EOs in combination with lactic acid on growth performance and the functional activity of the gut in broiler chickens. A total of 168 broiler chickens were given the basal diet supplemented with 10 ppm colistin (T1), 0.1% lactic acid (T2), 25 ppm EOs (T3), 25 ppm EOs+0.1% lactic acid (T4), 50 ppm EOs (T5) or 50 ppm EOs+0.1% lactic acid (T6) in the period 3 to 35 days of age. As a result, the broiler chickens assigned to T4 group throughout the experimental period had apparently (p<0.05) greater body weight and total gain than these assigned to T1, T2, T3 and T5 groups. However, there was no difference in growth performance among the birds fed the diets supplemented with antibiotic (T1), lactic acid (T2) and EOs (T3 and T5) alone. The weights of digestive organs and the number of lactobacilli and E. coli in the lower ileum were not affected by dietary treatments. Total trypsin activity was significantly (p<0.05) greater in T4 than T1, T2, T3 and T5 groups. Total and specific pancreatic $\alpha$-amylase activities were significantly (p<0.05) enhanced in the broiler chickens fed T4 diet compared with these fed T1, T2 and T3 diets. However, there were no differences in growth performance and digestive enzyme activities including pancreatic trypsin and $\alpha$-amylase between T4 and T6 groups fed the diets supplemented with either low or high EOs levels in combination of lactic acid. In conclusion, a blend of commercial EOs combined with lactic acid showed significant increases in digestive enzyme activities of the pancreas and intestinal mucosa, leading to increase in growth performance.

• Animal Systematics, Evolution and Diversity
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• 제21권2호
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• pp.233-241
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• 2005

제주도와 추자도에서 2004년과 2005년에 SCUBA 다이빙을 하여 채집된 해면동물을 동정$\cdot$분류한 결과 테다니해면속(Tedania)의 2종, 송악테다니해면[Tedania (Tedania) songakensis n. sp.]과 사수테다니해면 (Tedania(Tedania) sasuensis n. sp.]이 신종으로 밝혀졌다. 송악테다니해면은 T. (T.) purpurescen과 골편 형태에 있어서는 유사하지만 onychaete 크기와 성장형태에 있어 차이가 있다. 송악테다니해면의 onychaete 길이는 T (T.) purpurescen onychaete 의 두 배이며 성장형태에 있어 T (T.) purpurescen은 얇게덮어 싸는 형태이나 송악테다니해면은 덩어리 형태이다. 사수테다니해면은 T. (T.) connectens의 골편 구성과 형태는 유사하지만 골편크기와 성장형태에 있어 차이가 있다. 사수테다니해면의 큰 onychaete는 T (T.) connecters의 큰 onychaete 보다 더 크고, 작은 onychaete도 T. (T.) connecters의 작은 onychaete보다 더 작다. 성장형태에 있어서도 사수테다니해면은 덩어리 형태이지만 T. (T.) connecters는 두껍게 덮어 싸는 형태이다. 또한 송악테다니해면과 사수테다니해면의 성장형태는 유사하나 외형, 색깔과 모든 골편의 크기에 있어서 많은 차이를 보였다.

• 한국응용과학기술학회지
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• 제27권1호
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• pp.76-86
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• 2010

This study was conducted to evaluate the effects of dietary Korean red pine bark extract as an antibiotic replacements on cholesterol, fatty acids and the shelf-life of chicken meat. To accomplish this, chickens were fed the optimal level of red pine bark extract that was found to replace antibiotics in the diet of broilers. A total of 180 male broilers(Ross strain 308) were divided into three treated groups, T1(control group), T2(8 ppm of avilamycin) and T3(65 ppm of red pine bark extract per kg diet). The lipid content was reduced by 24.67% and 20.49% in T3 group, while the cholesterol level also decreased significantly in the T3 group by 20.49% and 20.55% when compared to the T1 and T2 groups, respectively. In addition, the saturated fatty acid level was lower in the T3 group than in the T1 and T2 groups, while the unsaturated fatty acid level of the T3 group was significantly higher than those of the other groups. The TBARS value of chicken thigh muscle containing its skin on the 7th day of low temperature storage was significantly lower by 23.86% and 21.17% in the T3 group than in the T1 and T2 groups, respectively. Evaluation of the color of the meat revealed that the $L^*$value (lightness) and $b^*$value(yellowness) were higher in the T3 group than in the T1 and the T2 groups, but that the pH was significantly lower in the T3. Based on the results of this study, the addition of 65 ppm red pine bark extract to the diet of broilers should improve their meat quality with respect to the lipid contents and shelf-life when compared to the addition of antibiotics.