• Title/Summary/Keyword: Small park

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Differential Responses of Large and Small Male Red-spotted Newts, Notophthalmus viridescens, to Conspecific Chemical Cues

  • Park, Dae-Sik;Jeanette M., Mc-Guire;Heather L., Eisthen
    • Animal cells and systems
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    • v.8 no.2
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    • pp.81-87
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    • 2004
  • Male red-spotted newts, Notophthalmus viridescens, use chemical cues to locate and select potential mates. To investigate whether large and small males respond differentially to chemical cues from conspecifics, we conducted a series of two-choice Y-maze tests with odorant stimuli from two large females (LF/LF), one large versus one small female (LF/SF), and one large female placed with four males versus one small female (LF+4M/SF). We found that males responded more rapidly in a LF/LF choice situation than in those involving LF/SF or LF+4M/SF. In addition, small males chose more quickly than did large males. These results suggest that both body size and odorant context affect the speed of odorant responses. By responding differentially to conspecific chemical cues, small males may arrive earlier at a courting area, increasing their chances of successfully guarding and mating with a female.

Development of a Deep Learning Algorithm for Small Object Detection in Real-Time (실시간 기반 매우 작은 객체 탐지를 위한 딥러닝 알고리즘 개발)

  • Wooseong Yeo;Meeyoung Park
    • Journal of the Korean Society of Industry Convergence
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    • v.27 no.4_2
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    • pp.1001-1007
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    • 2024
  • Recent deep learning algorithms for object detection in real-time play a crucial role in various applications such as autonomous driving, traffic monitoring, health care, and water quality monitoring. The size of small objects, in particular, significantly impacts the accuracy of detection models. However, data containing small objects can lead to underfitting issues in models. Therefore, this study developed a deep learning model capable of quickly detecting small objects to provide more accurate predictions. The RE-SOD (Residual block based Small Object Detector) developed in this research enhances the detection performance for small objects by using RGB separation preprocessing and residual blocks. The model achieved an accuracy of 1.0 in image classification and an mAP50-95 score of 0.944 in object detection. The performance of this model was validated by comparing it with real-time detection models such as YOLOv5, YOLOv7, and YOLOv8.

Applications of A Hydrologic Model to Small Watersheds -Description of Model Components- (小流域 水文模型의 開發과 應小流域 水文模型의 開發과 應用(I) -模型의 構成-)

  • Park, Seung-Woo
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.26 no.2
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    • pp.125-132
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    • 1984
  • A physically-based, distributed, parametric hydrologic model PARK 10 is described and its test results with three agricultural watersheds are presented. The model uses a rectangular grid system to depict hydrologic characteristics of a watershed, and thus, has potentials of identifying the effects of changes in land uses and/or other activities. The model is being tested with small watersheds in the pennisula.

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Relationship between electrical stimulus strength and contraction force from the inside of small intestine (전기 자극 강도에 따른 소장 내부에서의 수축력 관계)

  • Woo, S.H.;Kim, T.W.;Lee, J.H.;Park, H.J.;Moon, Y.K.;Won, C.H.;Lee, S.H.;Park, I.Y.;Cho, Jin-Ho
    • Journal of Sensor Science and Technology
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    • v.17 no.1
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    • pp.1-8
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    • 2008
  • Recently, capsule endoscope was developed to observe small intestine in human body. However, the capsule does not have any locomotive ability, which reduces the benefit of the capsule endoscope. Many researches have done to give locomotion to the capsule, still it consumes too much power to generate the motion by small battery. One of the moving method is electrical stimulus that consumes less power than many methods. The electrical stimulus method causes contraction in the small intestine, and it moves the capsule. Some of papers showed it is possible to guide the capsule by electrical stimulus, however the relationship between electrical stimulus at the mucous and contraction force in the small intestine is not reported, yet. In this paper, the mucous in the small intestine was stimulated, and measured the contraction force in the small intestine is shown. The result shows, the relationship between electrical stimulus parameters (voltage, duration) and contraction force. Also, equation between electrical stimulus parameters and contraction force is roughly induced.

The Promotion of Startups in Tainan Technopolis

  • Kung, Shiann-Far;Yen, Yung-Chih
    • World Technopolis Review
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    • v.7 no.1
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    • pp.59-70
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    • 2018
  • Taiwan's economy has been characterized by the strong existence and continuous creation of small and medium-sized enterprises. This phenomenon is commonly regarded to be the result of a culturally embedded strong entrepreneurial spirit. In the process of developing a high-technology industry in southern Taiwan, linking a newly established science park with existing local industries was one of the major challenges. This article reviewed the development history of Tainan Technopolis. Following a concise review of Southern Taiwan Science Park's struggle against becoming an assembly of spillover establishments from Hsinchu Science Park, the authors focused on the efforts of incubating startups. Although only an initial study, the authors demonstrated the roles of National Cheng Kung University and Southern Taiwan Science Park Administration in introducing a two-track incubation system based on collaboration between the two institutions and startups.

Synergic Effect of Trimebutine Combined with Mosapride on Gastrointestinal Dysfunction and Visceral Pain Induced in Stress Models

  • Park, Young-Joon;Park, Yong-Sul;Chung, Zoo-Chul;Nam, Yun-Sung;Chung, Yoon-Hee;Cho, Kwan-Hyung;Choi, Sung-Up;Sohn, Uy-Dong;Park, Eon-Sub;Je, Hyun-Dong;Lee, Choong-Ho;Lee, Moo-Yeol;Jeong, Ji-Hoon
    • Biomolecules & Therapeutics
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    • v.19 no.1
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    • pp.84-89
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    • 2011
  • The present study was undertaken to determine whether combined treatment with prokinetic trimebutine and mosapride has a synergic effect on gastrointestinal motility and visceral pain associated with gastrointestinal dysfunction. To develop effective gastroprokinetic agents with greater potencies than trimebutine or mosapride for the treatment of gastrointestinal tract disease, a mixture of trimebutine and mosapride was designed and prepared. In the present study, treatment with trimebutine alone showed a dose-dependent effect on propelling movements of normal small and large intestine in mice, whereas mosapride effected only small intestine motility. Co-administration of trimebutine with mosapride, a well-established prokinetic drug, produced a synergistic influence on normal small intestine motility, but demonstrated an unclear effect on large intestine motility, with a slight tendency to reduce the propelling time. In a stress model, the small and large intestine motilities were significantly decreased. The reduction of intestine motility was restored to a normal level and the restoring effect was more pronounced in the combined treatment with trimebutine plus mosapride than treatment with trimebutine or mosapride alone. Furthermore, treatment with trimebutine plus mosapride significantly decreased acute visceral pain which was not controlled by trimebutine or mosapride alone. These data suggest that combination therapy with trimebutine plus mosapride has a synergic effect on small and large intestine motility and visceral pain control in gastrointestinal disorders.

The Development of GIS-based Small Hydropower Package Tool (GIS기반 소수력 Package Tool 개발)

  • Heo, June-Ho;Jeong, Sang-Man;Park, Wan-Soon;Lee, Chul-Hyung
    • 한국태양에너지학회:학술대회논문집
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    • 2009.04a
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    • pp.139-144
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    • 2009
  • The generation of small hydropower as compared to other different developed environmental methods produces one of the clean energies. In such manner, various application system development through IT technique is being developed for an advanced small hydropower energy resources data mining. However, existing data analysis of New & Renewable Information System for small hydropower resources application is incomplete therefore it limits expressing these information on the Web. Thus for positive usage of small hydropower resources, a more systematic and precise analysis system should be built. This study seeks to develop a map of the domestic small hydropower resources problems to further improve small hydropower resources, developed through Package Tool which can accurately evaluate a wide range of small hydropower basin in a short period of time. Small hydropower Package Tool was calculated using existing Analysis System small hydropower resources which did not provide diverse capabilities resulting to 840 standard basin classified by A and facility capacity, etc., and to assume a 40% annual capacity, expected annual electricity production was calculated. Small hydropower for the national water system of small hydropower resources potential calculated in terms of resources for the development of small hydropower will be utilized as basic data.

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Case Study of Spatial Planning for the Efficient Use of Small Dwelling Space (소규모 주거공간의 효율적 활용을 위한 공간계획 사례연구)

  • Park, Si-Yoon;Kim, Jeong-Ah
    • Journal of the Korean housing association
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    • v.25 no.1
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    • pp.15-22
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    • 2014
  • In the domestic housing market, uncompleted lot-solid apartments and unoccupied residences are increasing in the medium-large scale area whose rents and transactions have been unstable, as going through the financial crisis and economical recession. Demands for small-scale housings are steadily increasing by practical consumer group who don't need large places, which are often not needed for the current people who are spending most of their time outside of their houses. Therefore, this study proposes the useful methods for spatial planning for small-scale houses for multiple households, including variable form, levels form, multi-level form, and smart-sizing. For efficient spatial planning for that purpose, here, small-scale housings are not limited to places for families with 1-2 members, but considered as one of broader approaches to graft various households and families. In addition, we examined the existed trends of researches about spatial utility of small-scale places, and did the research about the status of small-scale housing developments, and then proposed the direction for future small-scale housings by analyzing the advanced examples.