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        • A study on Safe Pork Consumption Behavior in Taiwan

          ( Cheng-wei Chen ), ( Yu-ping Fan ), ( Cheng-hsing Yeh ) 한국농업경제학회 2009 KOREAN JOURNAL OF AGRICULTURAL ECONOMICS(KJAT) Vol.50 No.3

          Pork is the most popular meat in Taiwan, that makes hog industry an important agriculture industry. The government had lauched the traceability system of agricultural products from 2004. It is needed to appreciate the policy affecting consumers' willingness to buy safe pork for hog industry to separate market. This research use consumer decision process model and market segmentation to separate four respective factors as age group, educational background, family income, and the population element as family structure to find out the habit of safe pork consumption. This study was based on household as its unit, and had conducted questionnaire survey upon the primary purchasers of pork, which were then analyzed with descriptive statistics, Chi-square test, and the logit model so as to differentiate the preference of demographic characteristics among consumers with various features. This research indicated consumers with more members of household, older, less educated,less income, less cognitive about pork risk would have higher possibility to buy warm pork. Consumers with female, more educated, more income, more cognitive about pork risk would have higher willingness to pork with traceability system.However consumers in Taiwan still prefer buy warm body pork, little perception about pork marketing risk. The government should improve pork safety by more inspecting hog farms, processing factories and markets and educating consumers the knowledge of safe pork by television broadcasting and other mass media.

        • KCI등재

          A Study on Safe Pork Consumption Behavior in Taiwan

          Cheng-Wei,Chen,Yu-Ping,Fan,Cheng-Hsing,Yeh 한국농업경제학회 2009 農業經濟硏究 Vol.50 No.4

          Pork is the most popular meat in Taiwan, that makes hog industry an important agriculture industry. The government had lauched the traceability system of agricultural products from 2004. It is needed to appreciate the policy affecting consumers' willingness to buy safe pork for hog industry to separate market. This research use consumer decision process model and market segmentation to separate four respective factors as age group, educational background, family income, and the population element as family structure to find out the habit of safe pork consumption. This study was based on household as its unit, and had conducted questionnaire survey upon the primary purchasers of pork, which were then analyzed with descriptive statistics, Chi-square test, and the logit model so as to differentiate the preference of demographic characteristics among consumers with various features. This research indicated consumers with more members of household, older, less educated, less income, less cognitive about pork risk would have higher possibility to buy warm pork. Consumers with female, more educated, more income, more cognitive about pork risk would have higher willingness to pork with traceability system.However consumers in Taiwan still prefer buy warm body pork, little perception about pork marketing risk. The government should improve pork safety by more inspecting hog farms, processing factories and markets and educating consumers the knowledge of safe pork by television broadcasting and other mass media.

        • SCIESCOPUSKCI등재

          Performance Improvement of Offline Phase for Indoor Positioning Systems Using Asus Xtion and Smartphone Sensors

          Yeh,,Sheng-Cheng,Chiou,,Yih-Shyh,Chang,,Huan,Hsu,,Wang-Hsin,Liu,,Shiau-Huang,Tsai,,Fuan The Korean Institute of Communications and Informa 2016 Journal of communications and networks Vol.18 No.5

          Providing a customer with tailored location-based services (LBSs) is a fundamental problem. For location-estimation techniques with radio-based measurements, LBS applications are widely available for mobile devices (MDs), such as smartphones, enabling users to run multi-task applications. LBS information not only enables obtaining the current location of an MD but also provides real-time push-pull communication service. For indoor environments, localization technologies based on radio frequency (RF) pattern-matching approaches are accurate and commonly used. However, to survey radio information for pattern-matching approaches, a considerable amount of time and work is spent in indoor environments. Consequently, in order to reduce the system-deployment cost and computing complexity, this article proposes an indoor positioning approach, which involves using Asus Xtion to facilitate capturing RF signals during an offline site survey. The depth information obtained using Asus Xtion is utilized to estimate the locations and predict the received signal strength (RF information) at uncertain locations. The proposed approach effectively reduces not only the time and work costs but also the computing complexity involved in determining the orientation and RF during the online positioning phase by estimating the user's location by using a smartphone. The experimental results demonstrated that more than 78% of time was saved, and the number of samples acquired using the proposed method during the offline phase was twice as much as that acquired using the conventional method. For the online phase, the location estimates have error distances of less than 2.67 m. Therefore, the proposed approach is beneficial for use in various LBS applications.

        • KCI등재

          Fabrication and applications of ultraflexible nanostructures using dielectric heating-assisted nanoimprint on PVC films

          Tsung-Yeh,Wu,Po-Cheng,Tsai,Shu-Cheng,Lo,Yi-Ru,Li,Kuang-Li,Lee,Sen-Yeu,Yang,Pei-Kuen,Wei 한국물리학회 2018 Current Applied Physics Vol.18 No.1

          We developed dielectric heating-assisted nanoimprint method for rapid fabrication of ultraflexible nanostructures. Using spin-coating polyvinyl-chloride (PVC) film on the glass slide, the dielectric heating on PVC film helped the pattern transfer from the mold to PVC film in few seconds. Various kinds of nanostructures were successfully made on PVC films with about 20-mm thickness. We demonstrated the applications of ultraflexible metallic nanostructures for bending measurement using surface plasmon resonance (SPR) and surface enhanced Raman scattering (SERS) on the curved surfaces. For measuring bending angles using SPR on capped nanowire arrays, the minimum detection angle was 2.4 103 degree under 0.02 nm wavelength resolution. For SERS measurement, the nanorod arrays on a curved substrate can increase SERS signals for two times as compared to planar SERS substrate.

        • KCI등재후보SCIESCOPUS

          Modeling slump of concrete with fly ash and superplasticizer

          I-Cheng,Yeh 사단법인 한국계산역학회 2008 Computers and Concrete, An International Journal Vol.5 No.6

          The effects of fly ash and superplasticizer (SP) on workability of concrete are quite difficult to predict because they are dependent on other concrete ingredients. Because of high complexity of the relations between workability and concrete compositions, conventional regression analysis could be not sufficient to build an accurate model. In this study, a workability model has been built using artificial neural networks (ANN). In this model, the workability is a function of the content of all concrete ingredients, including cement, fly ash, blast furnace slag, water, superplasticizer, coarse aggregate, and fine aggregate. The effects of water/binder ratio (w/b), fly ash-binder ratio (fa/b), superplasticizer-binder ratio (SP/b), and water content on slump were explored by the trained ANN. This study led to the following conclusions: (1) ANN can build a more accurate workability model than polynomial regression. (2) Although the water content and SP/b were kept constant, a change in w/b and fa/b had a distinct effect on the workability properties. (3) An increasing content of fly ash decreased the workability, while raised the slump upper limit that can be obtained.

        • KCI등재SCOPUS

          Performance Improvement of Offline Phase for Indoor Positioning Systems Using Asus Xtion and Smartphone Sensors

          Sheng-Cheng,Yeh,Yih-Shyh,Chiou,Huan,Chang,Wang-Hsin,Hsu,Shiau-Huang,Liu,Fuan,Tsai 한국통신학회 2016 Journal of communications and networks Vol.18 No.5

          Providing a customer with tailored location-based ser-vices (LBSs) is a fundamental problem. For location-estimationtechniques with radio-based measurements, LBS applications arewidely available for mobile devices (MDs), such as smartphones,enabling users to run multi-task applications. LBS information notonly enables obtaining the current location of an MD but also pro-vides real-time push-pull communication service. For indoor envi-ronments, localization technologies based on radio frequency (RF)pattern-matching approaches are accurate and commonly used. However, to survey radio information for pattern-matching ap-proaches, a considerable amount of time and work is spent in in-door environments. Consequently, in order to reduce the system-deployment cost and computing complexity, this article proposesan indoor positioning approach, which involves using Asus Xtionto facilitate capturing RF signals during an offline site survey. Thedepth information obtained using Asus Xtion is utilized to estimatethe locations and predict the received signal strength (RF informa-tion) at uncertain locations. The proposed approach effectively re-duces not only the time and work costs but also the computing com-plexity involved in determining the orientation and RF during theonline positioning phase by estimating the user's location by usinga smartphone. The experimental results demonstrated that morethan 78% of time was saved, and the number of samples acquiredusing the proposed method during the offline phase was twice asmuch as that acquired using the conventional method. For the on-line phase, the location estimates have error distances of less than2.67 m. Therefore, the proposed approach is beneficial for use invarious LBS applications.

        • KCI등재후보SCIESCOPUS

          Prediction of workability of concrete using design of experiments for mixtures

          I-Cheng,Yeh 사단법인 한국계산역학회 2008 Computers and Concrete, An International Journal Vol.5 No.1

          In this study, the effects and the interactions of water content, SP-binder ratio, and waterbinder ratio on the workability performance of concrete were investigated. The experiments were designed based on flatted simplex-centroid experiment design modified from standard simplex-centroid one. The data gotten from the design was used to build the concrete slump model using neural networks. Research reported in this paper shows that a small number of slump experiments can be performed and meaningful data obtained with the experiment design. Such data would be suitable for building slump model using neural networks. The trained network can be satisfactorily used for exploring the effects of the components and their interactions on the workability of concrete. It has found that a high water content and a high SP/b ratio is essential for high workability, but achieving this by increasing these parameters will not in itself guarantee high workability. The w/b played a very important role in producing workability and had rather profound effects; however, the medium value about 0.4 is the best w/b to reach high slump without too much effort on trying to find the appropriate water content and SP/b.

        • KCI등재

          Suture Repair in Endoscopic Surgery for Craniovertebral Junction

          Mei-Yin,Yeh,Wen-Cheng,Huang,Jau-Ching,Wu,Chao-Hung,Kuo,Hsuan-Kan,Chang,Tsung-Hsi,Tu,Peng-Yuan,Chang,Yu-Shu,Yen,Henrich,Cheng 대한척추신경외과학회 2019 대한척추신경외과학회지 Vol.16 No.2

          Objective: Endoscopic approaches to the craniovertebral junction (CVJ) have been established as viable and effective surgical treatments in the past decade. One of the major complications is leakage of the cerebrospinal fluid (CSF). This study aimed to investigate the efficacy and feasibility of suture closure at the nasopharyngeal mucosa upon durotomy. Methods: A series of consecutive patients who underwent different endoscopic approaches to the CVJ were retrospectively reviewed. The pathologies, surgical corridors, neurological and functional outcomes, radiological evaluations, and complications were analyzed. Different strategies of repair for the intraoperative CSF leakage were described and compared. Results: A total of 22 patients covering 13 years were analyzed. There were 12, 2, and 8 patients who underwent transnasal, transoral, and combined approaches, respectively. There were 8 patients (36.4%) who experienced intraoperative CSF leakage, and were grouped into 2: 4 in the nonsuture (NS) group and 4 in the suture-repaired (SR) group. The NS group had 3 (75%) persistent CSF leakages postoperation that caused 1 mortality, whereas patients of the SR group had only 1 minor CSF rhinorrhea that healed spontaneously within days. Conclusion: In this series of 22 patients who required anterior endoscopic resection of pathologies at the CVJ, there was 1 (4.5%) serious complication related to CSF leakage. For patients who had no durotomy, the mucosal incision at the nasopharynx usually healed rapidly and there were few procedure-related complications. For patients with intraoperative CSF leakage, suture closure was technically challenging but could significantly lower the risks of postoperative complications.

        • O-079 : Comprehensive Evaluation of Liver Resection Proce-dures: Surgical Mind Development through Cognitive Task Analysis

          ( Cheng-maw Ho ), ( Go Wakabayashi ), ( Chi-chuan Yeh ), ( Rey- Heng Hu ), ( Takanori Sakaguchi ), ( Takeshi Takahara ), ( Po- Huang Lee ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1

          Aims: Liver resection is a complex procedure for trainee surgeons. Cognitive task analysis facilitates understanding and decomposing tasks that require a great proportion of mental activity from experts. Methods: Using cognitive task analysis and video-based coaching to compare liver resection by open and laparoscopic approaches, we decomposed the task of liver resection into exposure (visual field building), adequate tension made at the working plane (which may change three-dimensionally during the resection process), and target processing (intervention strategy) that can bridge the gap from the basic surgical principle. Results: The key steps of highly-specialized techniques, including hanging maneuvers and looping of extra-hepatic hepatic veins, will be shown on video by open and laparoscopic approaches. Conclusions: Familiarization with laparoscopic anatomical orientation may help surgeons already skilled at open liver resection transit to perform laparoscopic liver resection smoothly. Facilities at hand (such as patient tolerability, advanced instruments, and trained teams of personnel) can influence surgical decision making. Application of the rationale and realizing the interplay between the surgical principles and the other paramedical factors may help surgeons in training to understand the mental abstractions of experienced surgeons, to choose the most appropriate surgical strategy effectively at will, and to minimize the gap.

        • P-SE7 : Study on Simulation Analysis of Reduce Speed Effect for Wind Nets in Front of Crop

          ( Cheng-chang Lien ), ( Zhu-yun Yeh ), ( Wei-ling Sun ), ( Jeng-liang Lin ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1

          Due to frequent strong winds from its geographical location in Taiwan, which caused serious damage to vegetables and fruit trees, leading to a large loss of agricultural production. Wind nets can be used to reduce the wind speed in front of fruits and vegetables in order to reduce the impact of wind speed. The purpose of this study is to use Computational Fluid Dynamics(CFD), CFD simulation Software was used to simulate wind tunnel experiments with wind nets before fruits and vegetables to understand the wind tunnel with different ventilation rates under certain wind speed 40 m/s, to simulate the change of wind speed and the distribution of flow field behind the wind nets, Analyze and analyze the change of wind field and the effect of reducing the wind. The size of the wind net was 12m<sup>*</sup>6m. According to the CFD simulation results, when the strong wind blows through the wind nets, a negative pressure zone will be generated at a horizontal distance of 0h to 10h in the windshield leeway, and the height of the negative pressure zone will gradually decrease as the horizontal distance increases. The height of the negative pressure zone also decreases with the increase of the ventilation rate of the windbreak. In addition, the analysis results show that the ventilation rate of 40% of the windbreak, the negative pressure vortex gradually disappear, and have the best effect of reducing the wind.

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