http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Portable Laser Doppler Flowmeter for Microcirculation Detection
Chang-Lin Hu,Meng-Lin Li,Zhan-Sheng Lin,Yen-Yu Chen,Yuan-Hsiang Lin 대한의용생체공학회 2013 Biomedical Engineering Letters (BMEL) Vol.3 No.2
Purpose The microcirculatory system of the human body is closely related to its physiological conditions. The laser Doppler flowmeter can detect symptoms through variations in the microcirculation; however, the present commercial Doppler flowmeter is very expensive, heavy, and inconvenient to carry. Therefore, an inexpensive, small, and portable laser Doppler flowmeter is proposed. Methods In this study, we designed a laser Doppler flowmeter transmitting receiving module based on the fundamental principles of laser Doppler, using a common computer for flow calculation. A self-designed correction system was used to validate the portable laser Doppler flowmeter. Results The coefficient of correlation between the mean frequency offset <ω> of the flowmeter and the actual mimicked blood flow rate reached a high value of R = 0.99, and the variations in microcirculation flow could be accurately measured. Conclusions The results proved that the low-cost portable laser Doppler flowmeter can be used extensively in early symptom detection for disease prevention and control.
Lin, Meng Yin(임맹인) 한국전시산업융합연구원 2024 한국과학예술융합학회 Vol.42 No.2
Against the backdrop of rapid digitalization in education and media, English knowledge short videos, as an emerging online learning tool, are transforming traditional educational models. This mode of learning is not only universally significant for scientists across disciplines but also offers deeper insights for experts in educational technology and online learning. This study aims to explore the factors influencing the E-learning intentions of users of this learning tool, a critical issue for the current educational environment. Based on the Technology Acceptance Model (TAM), the study conducted a questionnaire survey on 388 valid sample users and analyzed the data using a structural equation model. The results indicate that perceived interactivity and technical support significantly enhance users perception of platform ease of use, while cognitive style has a less pronounced impact on this perception. Moreover, these factors also positively influence users perceived usefulness of English knowledge short videos. Perceived interactivity and technical support significantly impact E-learning intentions through perceived ease of use and perceived usefulness. These findings provide new theoretical perspectives in the field of online learning, particularly in understanding and enhancing E-learning intentions. This study offers practical guidance for the innovative design of online educational resources and the development of educational technology. Furthermore, the findings underscore the importance of considering users interactive experience and technical support in the design and implementation of online learning platforms, providing valuable insights for educational practices and policy-making in online learning environments.
Two-Dimensional Fluid Simulation of Capacitively Coupled RF Electronegative Plasmas
MENG, Lin,YOON, Hyun Jin,CHUNG, Tae Hun,LEE, Jae Koo 東亞大學校附設基礎科學硏究所 1998 基礎科學硏究論文集 Vol.15 No.1
A two-dimensional self-consistent fluid simulation of capacitively coupled rf glow discharges of electronegative plasma with a cylindrically symmetric parallel plate electrode is presented. The model equations include continuity equations, a Poisson equation, and an electron energy balance equation. The two-dimensional distributions of charged particle densities, electric potential, electron temperature, and ionization rate are calculated. The effects of the applied rf voltage, the driver frequency, and the gas pressure on the discharge characteristics are investigated in detail.
The Situation, Models and Strategies of Forage Production in Beijing
Lin Meng,Pei-chun Mao,Lie-gang Han,Guo-fang Zhang 한국초지조사료학회 2009 한국초지조사료학회 학술대회논문집 Vol.2009 No.08
The situation, problems and models of forage production and industrialization in Beijing were analyzed, and the strategies were pointed out including: (1) The suitable planting areas for alfalfa, silage com and rye etc should be defined systemically, and the rational harvest time and dry skills should be set up in Beijing plain areas. (2) The perennial forage crops with higher drought resistance should be planted in the waste slope land and barren land. (3) The interplant forage crops in the woodland and orchard should be generalized.
Lin Meng-Ying,Wu Cheng-Lin,Su Yung-Yeh,Huang Chien-Jui,Chang Wei-Lun,Sheu Bor-Shyang 거트앤리버 소화기연관학회협의회 2023 Gut and Liver Vol.17 No.2
Background/Aims: A high-quality sample allows for next-generation sequencing and the administration of more tailored precision medicine treatments. We aimed to evaluate whether heparinized wet suction can obtain higher quality samples than the standard dry-suction method during endoscopic ultrasound (EUS)-guided biopsy of pancreatic masses. Methods: A prospective randomized crossover study was conducted. Patients with a solid pancreatic mass were randomly allocated to receive either heparinized wet suction first or dry suction first. For each method, two needle passes were made, followed by a switch to the other method for a total of four needle punctures. The primary outcome was the aggregated white tissue length. Histological blood contamination, diagnostic performance and adverse events were analyzed as secondary outcomes. In addition, the correlation between white tissue length and the extracted DNA amount was analyzed. Results: A total of 50 patients were enrolled, and 200 specimens were acquired (100 with heparinized wet suction and 100 with dry suction), with one minor bleeding event. The heparinized wet suction approach yielded specimens with longer aggregated white tissue length (11.07 mm vs 7.96 mm, p=0.001) and less blood contamination (p=0.008). A trend towards decreasing tissue quality was observed for the 2nd pass of the dry-suction method, leading to decreased diagnostic sensitivity and accuracy, although the accumulated diagnostic performance was comparable between the two suction methods. The amount of extracted DNA correlated positively to the white tissue length (p=0.001, Spearman̕s ρ=0.568). Conclusions: Heparinized wet suction for EUS tissue acquisition of solid pancreatic masses can yield longer, bloodless, DNA-rich tissue without increasing the incidence of adverse events (ClinicalTrials.gov. identifier NCT04707560).
Performance Analysis of Buffer Aware Scheduling for Video Services in LTE Network
( Meng-hsien Lin ),( Yen-wen Chen ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.9
Recent advancements in broadband wireless communication technologies enable mobile users to receive video streaming services with various smart devices. The long term evolution (LTE) network provides high bandwidth and low latency for several emerging mobile applications. This paper proposes the buffer aware scheduling (BAS) approach to schedule the downlink video traffic in LTE network. The proposed BAS scheme applies the weighting function to heuristically adjust the scheduling priority by considering the buffer status and channel condition of UE so as to reduce the time that UE stays in the connected state without receiving data. Both of 1080P and 2160P resolution video streaming sources were applied for exhaustive simulations to examine the performance of the proposed scheme by comparing to that of the fair bandwidth (FB) and the best channel quality indicator (CQI) schemes. The simulation results indicate that the proposed BAS scheme not only achieves better performance in power saving, streaming delivery time, and throughput than the FB scheme while maintaining the similar performance as the best CQI scheme in light traffic load. Specifically, the proposed scheme reduces streaming delivery time and generates less signaling overhead than the best CQI scheme when the traffic load is heavy.
Hydrogen Peroxide Detection Using a Polypyrrole/Prussian Blue Nanowire Modified Electrode
Meng Lin,Jiao Yang,조미숙,이영관 한국고분자학회 2011 Macromolecular Research Vol.19 No.7
A hydrogen peroxide sensor based on a polypyrrole (PPy)/Prussian blue (PB) modified electrode was developed. PPy nanowires were prepared by one step template-free electrochemical polymerization on a gold electrode and a PB layer was deposited using an electrochemical method. The introduction of the PPy nanostructure can provide a high surface area and lead to high sensitivity to hydrogen peroxide. The surface morphology of the PPy/PB electrode was characterized by scanning electron microscopy (SEM). The structural features of the PPy/PB electrode were confirmed by attenuated total reflection infrared (ATR-IR) and X-ray photoelectron spectroscopy (XPS). Chronoamperometry (CA) was used to evaluate the sensitivity of the sensor towards hydrogen peroxide.