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Transactions of Nonferrous Metals Society of China 2010年第6期20卷 1072-1077页

作者： tsai de-chang HWANG Weng-sing department of Materials Science and Engineering National Cheng Kung University

The purpose of this study is to predict the morphologies in the solidification process for Cu-0.6Cr(mass fraction,%)alloy by vacuum continuous casting(VCC)and verify its accuracy by the observed experimental *** numerical simulation aspect, finite difference(FD)method and modified cellular automaton(MCA)model were used to simulate the macro-temperature field, micro-concentration field,nucleation and grain growth of Cu-0.6Cr alloy using real data from actual casting *** the observed casting experiment,the preliminary grain morphologies are the directional columnar grains by the VCC *** solidification morphologies by MCAFD model are in agreement with the result of actual casting experiment well.

关键词： Cu-Cr alloy vacuum continuous casting solidification morphology simulation modified cellular automaton model finite difference method

PD-YOLO:Colon Polyp detection Model Based on Enhanced Small-Target Feature Extraction

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Computers, Materials & Continua 2025年第1期82卷 913-928页

作者： Yicong Yu Kaixin Lin Jiajun Hong Rong-Guei tsai Yuanzhi Huang New Engineering Industry College Putian UniversityPutian351100China Engineering Research Center of Big Data Application in Private Health Medicine(Putian University) Fujian Province UniversityPutian351100China Computer College Guangdong University of Science&TechnologyDongguan523668China

In recent years,the number of patientswith colon disease has increased *** polyps are the precursor lesions of colon *** not diagnosed in time,they can easily develop into colon cancer,posing a serious threat to patients’lives and health.A colonoscopy is an important means of detecting colon ***,in polyp imaging,due to the large differences and diverse types of polyps in size,shape,color,etc.,traditional detection methods face the problem of high false positive rates,which creates problems for doctors during the diagnosis *** order to improve the accuracy and efficiency of colon polyp detection,this question proposes a network model suitable for colon polyp detection(PD-YOLO).This method introduces the self-attention mechanism CBAM(Convolutional Block Attention Module)in the backbone layer based on YOLOv7,allowing themodel to adaptively focus on key information and ignore the unimportant *** help themodel do a better job of polyp localization and bounding box regression,add the SPD-Conv(Symmetric Positive definite Convolution)module to the neck layer and use deconvolution instead of *** results indicate that the PD-YOLO algorithm demonstrates strong robustness in colon polyp *** to the original YOLOv7,on the Kvasir-SEG dataset,PD-YOLO has shown an increase of 5.44 percentage points in AP@0.5,showcasing significant advantages over other mainstream methods.

关键词： Polyp detection YOLOv7 SPD-Conv CBAM deconvolution

微山湖区烏鳢(OPHIOCEPHALUS ARGUS CANTOR)生殖生态的初步观察

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山东大学学报(自然科学版) 1962年第4期 63-75页

作者：周才武張德立張銘棣山东大学生物系

一、对于烏鳢生殖生态的观察研究是在山东微山湖区的南阳湖和昭阳湖进行的?ㄈ昀吹囊恍┯浡嫉饕窃诮衲耆轮潦麻g在湖上观察的結果。二、烏鳢有营巢习性?贝启~卵巢发育到第Ⅳ期以后在产卵前約一周左右开始营巢。我們对于巢的... 详细信息

一、对于烏鳢生殖生态的观察研究是在山东微山湖区的南阳湖和昭阳湖进行的?ㄈ昀吹囊恍┯浡嫉饕窃诮衲耆轮潦麻g在湖上观察的結果。二、烏鳢有营巢习性?贝启~卵巢发育到第Ⅳ期以后在产卵前約一周左右开始营巢。我們对于巢的形状、結构、似置及其有关的水质、底质和动植物环境,作了观察和分析。巢的結构比较简单,但有其自身的特点。雌雄亲魚可能都参加营巢活动。营巢不都要咬断水草,所以它們的巢极少是咬断的水草或利用浮草作成的。除了要求水浅、一定的水生植物羣落、並避免水流和风浪外,营巢对于环境因素的选择性,並不重要。三、烏鳢系一雄一雌交配产卵,从营巢至产卵以前如有其他力相匹敌的雄魚游至巢边,即有爭偶現象,敗者遁去,胜者得以配偶,但亦常負伤。四、怀卵量自8484—27844,平均19609,与亲魚年令及魚体大小有关,即初产的二令魚較少,三令及四令魚比较接近。本区烏鳢怀卵量较黑龙江标本为少。五、卵产于巢的空隙中或“草垫”的表面,产卵与气候、汛期及水生植物的生长情况有关。本湖区产期最早記录为四月廿七日,一般最早在五月中旬,以五月下旬至六月中旬为盛产期,视汛期及气候情况,8月份可以再产。一次产卵量为4000—7000粒,最多可至15,000粒。产卵对当日天气有选择性。本区各湖产期略有不同。在不同的水生植物羣落中,产卵也出现先后的差異。六、烏鳢有护幼习性?押?亲魚留于巢中或附近廵游,守护魚卵。廵游巢边,除护卵外,可能还起了交流空气、清新水质以促进受精卵发育的作用。从实例中发现护幼的大多是雄魚,但又发现巢中除雄魚外又同时捕得雌魚,或者先捕去雄魚后来又获得雌魚,因此很可能雌雄亲魚都是参加护幼的。

关键词：初步观察生殖生态昭阳湖南阳湖刁阳湖怀卵量筑巢营巢 OPHIOCEPHALUS ARGUS CANTOR 卵巢发育亲鱼水草微山湖区雌鱼

Improvement of fuel consumption and maintenance of heating furnaces using a modified heating pattern

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Journal of University of Science and Technology Beijing 2007年第1期14卷 27-32页

作者： Hsun-Heng tsai Shiuh-Ming chang department of Biomechatronics Engineering Pintung University of Science and TechnologyChina Taipei department of Mechanical and Automation Engineering Kao Yuan UniversityChina Taipei

This article studies the transient heat conduction in a slab when passing through various sections of the furnace, and focuses on the thickness of the scale layer formed on the slab. The transient heat conduction behavior of a slab in various sections of the heating furnace is analyzed using the Laplace transformation method, including the pre-heating zone, the first heating zone, the second heating zone, and the soaking zone. The heating pattern of the furnace is then modified to reduce fuel consumption. The simulation results show that the scale layer formed on the slab significantly influences the quality of the hot rolled coil formed, and how the furnace parameters affect the efficiency of the furnace and the quality of the coil.

关键词： heating furnace heat conduction preheating zone heating zone soaking zone Laplace transformation

Strain measurement of fiber optic sensor surface bonding on host material

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中国有色金属学会会刊：英文版 2009年第B09期19卷 143-149页

作者： Shiuh-Chuan HER chang-Yu tsai department of Mechanical Engineering Yuan Ze University

Fiber optic sensor has been widely used as a structural health monitoring device by either embedding into or surface bonding onto the structures. The strain of optic fiber induced by the host material is strongly dependent on the bonding characteristics which include the protective coating, adhesive layer and the length of bonding. The strains between the fiber optics and host structure are not exact the same. The existence of the protective coating and adhesive layer would affect the strain measured by the surface bonding optic sensor. The analytical expression of the strain in the optic fiber induced by the host material was presented. The results were validated by the finite element method. The theoretical predictions reveal that the strain in the optical fiber is lower than the strain of host material. Parametric study shows that a long bonding length and high modulus of protective coating would increase the percentage of strain transferring into the optical fiber. Experiments were conducted by using Mach-Zehnder interferometer to measure the strain of the surface bonding optic fiber induced by the host structure. Good agreements were observed in comparison with the experimental results and theoretical predictions.

关键词：光纤传感器主机结构应变测量粘接材料表面结构健康监测粘结长度光纤应变

Surfing the metasurface:a conversation with Din Ping tsai

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Advanced Photonics 2023年第6期5卷 8-11页

作者： Guoqing chang Din Ping tsai Chinese Academy of Sciences Institute of PhysicsBeijingChina department of Electrical Engineering City University of Hong KongChina

chang:Hello,Professor *** you for joining *** begin,would you please comment on your early work completed in the course of your PhD studies?tsai:In 1985,I went to the United States for my graduate *** supervisor mainly worked on the light–matter interaction,such as characterizing semiconductor materials by analyzing the width and position of Raman spectroscopy peaks to determine their crystallization condition and elemental *** that time,there were many senior students working on similar research topics in the same *** I chose to conduct research in a direction similar to theirs,it would take a long time for me to *** discussing this with my advisor,he encouraged me to explore other new research directions.

关键词： please directions surface

Enhancing design of Visual-Servo delayed System

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Journal of Electronic Science and Technology 2018年第3期16卷 232-240页

作者： Zhi-Ren tsai Yau-Zen chang the department of Computer Science and Information Engineering Asia University the department of Medical Research China Medical University Hospital China Medical University the department of Mechanical Engineering Chang Gung University the department of Neurosurgery Chang Gung Memorial Hospital

A robust adaptive predictor is proposed to solve the time-varying and delay control problem of an overhead crane system with a stereo-vision servo. The predictor is based on the use of a recurrent neural network(RNN) with tapped delays, and is used to supply the real-time signal of the swing angle. There are two types of discrete-time controllers under investigation, i.e., the proportional-integral-derivative(PID) controller and the sliding controller. Firstly, a design principle of the neural predictor is developed to guarantee the convergence of its swing angle estimation. Then, an improved version of the particle swarm optimization algorithm, the parallel particle swarm optimization(PPSO) method is used to optimize the control parameters of these two types of controllers. Finally, a homemade overhead crane system equipped with the Kinect sensor for the visual servo is used to verify the proposed scheme. Experimental results demonstrate the effectiveness of the approach, which also show the parameter convergence in the predictor.

关键词： Parallel particle swarm optimization robust adaptive predictor stereo-vision servo time-varying delay

Model-Based Adaptive Predictive Control with Visual Servo of a Rotary Crane System

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Journal of Electronic Science and Technology 2018年第2期16卷 169-174页

作者： Zhi-Ren tsai Yau-Zen chang department of Computer Science and Information Engineering Asia UniversityTaichung 41354 department of Mechanical Engineering Chang Gung UniversityTaoyuan 33302 with the department of Medical Research China Medical University HospitalChina Medical UniversityTaichung 41354 department of Neurosurgery Chang Gung Memorial HospitalChiayi 61363

This paper investigated the implementation of an adaptive predictive controller using nonlinear dynamic echo state neural （ESN） model for a rotary crane system by the visual servo method. The control sequences within the control horizon were described using cubic spline interpolation to enlarge the predictive horizon. Verification of the proposed scheme in the face of exogenous disturbances and modeling error with inaccurate string length was demonstrated by both simulations and experiments.

关键词： Adaptive predictive controller echo state neural(ESN) model exogenous disturbances modeling error rotary crane

AXIAL HEAT CONDUCTION MOdeL TO PREDICT MAXIMUM HEAT REMOVE OF MINIATURE HEAT PIPE BASED ON GREY MOdeL THEORY

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Chinese Journal of Mechanical Engineering 2005年第4期18卷 477-481页

作者： tsai Mengchang chang Shinhsing Kang Shungwen department of Mechanical and Electro- Mechanical Engineering Tamkang University 151 Ying-Chuan Rd. Tamsui Taiwan 25137 China department of Industrial Management Vanung UniversityNo.1 Van-Nung Rd. Chung-Li Tao-Yuan Taiwan 32061. China department of Mechanical and Electro- Mechanical Engineering Tamkang University 151 Ying-Chuan Rd. Tamsui Taiwan 25137. China

Computer chip is always accompanied by the increase of heat dissipation and miniaturization. The miniature heat pipes are widely used in notebook computer to resolve the heat dissipation problems. Maximum heat removed model of miniature heat pipes building by grey model is presented. In order to know the foundation for modeling, the smooth grade of error examination is inquired and the accuracy of grey relational grade is verified. The model can be used to select a suitable heat pipes to solve electric heat problems in the future. Final results show that the grey model only needs four experiment data and its error value is less than 10%, further, it is better than computational fluid dynamics （CFD） model.

关键词： Maximum heat removed model Miniature heat pipe Grey model theory Computational fluid dynamics (CFD) Grey relational grade

New Challenges for Biological Text-Mining in the Next decade

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Journal of Computer Science & Technology 2010年第1期25卷 169-178,F0003页

作者： Yen-Ching chang Richard Tzong-Han tsai Wen-Lian Hsu Institute of Information Science "Academia Sinica" department of Computer Science and Engineering Yuan Ze University department of Computer Science "National Tsing-Hua University"

The massive flow of scholarly publications from traditional paper journals to online outlets has benefited biologists because of its ease to access. However, due to the sheer volume of available biological literature, researchers are finding it increasingly difficult to locate needed information. As a result, recent biology contests, notably JNLPBA and BioCreAtIvE, have focused on evaluating various methods in which the literature may be navigated. Among these methods, text-mining technology has shown the most promise. With recent advances in text-mining technology and the fact that publishers are now making the full texts of articles available in XML format, TMSs can be adapted to accelerate literature curation, maintain the integrity of information, and ensure proper linkage of data to other resources. Even so, several new challenges have emerged in relation to full text analysis, life-science terminology, complex relation extraction, and information fusion. These challenges must be overcome in order for text-mining to be more effective. In this paper, we identify the challenges, discuss how they might be overcome, and consider the resources that may be helpful in achieving that goal.

关键词： bioinformatics database mining method and algorithm text mining