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室内设计与装修 2025年第1期 22-25页

作者：无何崴王梓亦吴文权刘浩何星辰三文建筑/何崴工作室不详 dong建筑影像

该项目位于福建省宁德市霞浦东海一号公路旁,是宁德“零碳岛”建设的重要组成部分。它毗邻东海,视线开阔,平台正面是兀立海中的笔架山岛,崖下海礁林立,并有海蚀洞。海风,海浪,海岛,海礁,海蚀洞,共同组成了独特的海岸风光。

关键词：福建省宁德市观沧海笔架山海蚀洞洞见

Optimization of image capturing method of wear particles for condition diagnosis of machine parts

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中国有色金属学会会刊：英文版 2009年第B09期19卷 215-219页

作者： Yon-Sang CHO Heung-Sik PARK Department of Materials Engineering Dong-A University

Wear particles are inevitably occurred from moving parts, such as a piston-cylinder made from steel or hybrid materials. And a durability of these parts must be evaluated. The wear particle analysis has been known as a very effective method to foreknow and decide a moving situation and a damage of machine parts by using the digital computer image processing. But it is not laid down to calculate shape parameters of wear particle and wear volume. In order to apply image processing method in a durability evaluation of machine parts, it needs to verify the reliability of the calculated data by the image processing and to lay down the number of images and the amount of wear particles in one image. In this work, the lubricated friction experiment was carried out in order to establish the optimum image capture with the 1045 specimen under experiment condition. The wear particle data were calculated differently according to the number of image and the amount of wear particle in one image. The results show that capturing conditions need to be more than 140 wear particles in one image and over 40 images for the reliable data. Thus, the capturing method of wear particles images was optimized for condition diagnosis of machine moving parts.

关键词：计算机图像处理磨损颗粒机械零件优化条件诊断方法拍摄图像处理方法运动部件

Analysis and optimization of nitrile butadiene rubber sealing mechanism of ball valve

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中国有色金属学会会刊：英文版 2009年第B09期19卷 220-224页

作者： Young-Chul PARK Department of Mechanical Engineering Dong-A University

An approach for analyzing and optimizing sealing mechanism of ball valve made of nitrile butadiene rubber(NBR) with finite element method was presented. The Mooney-Rivlin hyperelastic material model was chosen to characterize NBR sealing, as it has been recommended in the similar applications. That is, NBR sealing was modeled as incompressible hyperelasticity, as well as the assumption of isotropic flow. The results illustrate the structural pressure and contact pressure on the contact surface, which shows that the NBR sealing mechanism is very suitable for sealing after dimension optimization.

关键词：橡胶密封丁腈橡胶尺寸优化机制球阀有限元方法材料模型各向同性

Boundedness in a chemotaxis system with nonlinear signal production

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Applied Mathematics(A Journal of Chinese Universities) 2016年第4期31卷 379-388页

作者： LIU dong-mei TAO You-shan College of Information Science & Technology Dong Hua University Department of Applied Mathematics Dong Hua University

This work deals with the zero-Neumann boundary problem to a fully parabolic chemotaxis system with a nonlinear signal production function f（s） fulfilling 0 〈 f（s）〈 Ksα for all s 〉 0, where K and α are positive parameters. It is shown that whenever 0 〈 α 〈 2/n （where n denotes the spatial dimension） and under suitable assumptions on the initial data, this problem admits a unique global classical solution that is uniformly-in-time bounded in any spatial dimension. The proof is based on some a priori estimate techniques.

关键词： Keller-Segel model nonlinear signal production prevention of blow-up.

Guiding Attention by Cooperative Cues

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Journal of Computer Science & Technology 2008年第5期23卷 874-884页

作者： KangWoo Lee School of Media Soongsil University 1-1 Sangdo-5 Dong Dong-Jak Ku Seoul 156-743 Korea

A common assumption in visual attention is based on the rationale of ＂limited capacity of information processing＂. From this view point there is little consideration of how different information channels or modules are cooperating because cells in processing stages are forced to compete for the limited resource. To examine the mechanism behind the cooperative behavior of information channels, a computational model of selective attention is implemented based on two hypotheses. Unlike the traditional view of visual attention, the cooperative behavior is assumed to be a dynamic integration process between the bottom-up and top-down information. Furthermore, top-down information is assumed to provide a contextual cue during selection process and to guide the attentional allocation among many bottom-up candidates. The result from a series of simulation with still and video images showed some interesting properties that could not be explained by the competitive aspect of selective attention alone.

关键词： selective attention cooperation competition cooperative cues guidance

Structural optimization for ball valve made of CF8M stainless steel

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中国有色金属学会会刊：英文版 2009年第B09期19卷 258-261页

作者： Seung-Gyu KIM Seok-Heum BAEK Young-Chul PARK Department of Mechanical Engineering Dong-A University

The mechanical and chemical properties of CF8M were studied through experiments. An application of CF8M in valve body was analyzed by using finite element method(FEM) to evaluate the structural safety. An optimization containing several variables based on the response surface method(RSM) was conducted to find the optimum dimension of the valve. The results show that using this process can save valve mass as well as the computational expense effectively.

关键词：结构优化球阀不锈钢化学性能有限元法结构安全最佳尺寸 FEM

Growth-temperature-dependent optical and acetone detection properties of ZnO thin films

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Journal of Semiconductors 2015年第7期36卷 17-21页

作者： P.S.Shewale Y.S.Yu Convergence of IT Devices Institute Dong-Eui University Department of Radiological Science Dong-Eui University

Zinc oxide （ZnO） thin films were prepared onto glass substrates at moderately low growth tempera- ture by two-stage spray pyrolysis technique. The effects of growth temperature on structural, optical and acetone detection properties were investigated with X-ray diffractometry, a UV-visible spectrophotometer, photoluminescence （PL） spectroscopy and a homemade gas sensor testing unit, respectively. All the films are polycrystalline with a hexagonal wurtzite phase and exhibit a preferential orientation along [002] direction. The film crystallinity is gradually enhanced with an increase in growth temperature. The optical measurements show that all the films are physically highly transparent with a transmittance greater than 82% in the visible range. The band gap of the film is observed to exhibit a slight red shift with an increasing growth temperature. The PL studies on the films show UV/violet PL band at - 395 nm. Among all the films investigated, the film deposited at 250℃ demonstrates a maximum sensitivity of 13% towards 20 ppm of acetone vapors at 300℃ operating temperature.

关键词： ZnO thin film growth temperature optical acetone sensing properties

Analysis of intrahepatic sarcomatoid cholangiocarcinoma:Experience from 11 cases within 17 years

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World Journal of Gastroenterology 2019年第5期25卷 608-621页

作者： dong Kyun Kim Bo Ra Kim Jin Sook Jeong Yang Hyun Baek Department of Internal Medicine Dong-A University College of Medicine Department of Radiology Dong-A University College of Medicine Department of Pathology Dong-A University College of Medicine

BACKGROUND Intrahepatic sarcomatoid chonalgiocarcinoma(s-CCC) is an extremely rare disease, accounting for less than 1% of hepatobiliary system malignancies, and its pathophysiology is not well known. On the hypothesis that its clinical, serologic,or radiologic diagnosis are not fully understood and its prognosis is poor, we investigated the distinguishing features of s-CCC compared with those of intrahepatic bile duct adenocarcinoma [cholangiocellular carcinoma(CCC)] in patients from a single *** To analyze the clinical, serologic, imaging, and histopathologic characteristics of intrahepatic s-CCC patients diagnosed in a single *** The clinical, serologic, imaging, and histopathologic features of 227 patients diagnosed with intrahepatic cholangiocarcinoma(IHCC) in a single medical center during the last 17 years were analyzed. The characteristics of 11 patients with s-CCC were compared with those of 216 patients with *** The number of patients with s-CCC who presented fever and abdominal pain and past history of chronic viral hepatitis or liver cirrhosis(LC) was higher than that of patients with CCC. In imaging studies, patients with s-CCC showed relatively aggressive features. However, no clear distinction was observed between s-CCC and CCC based on other clinical, serologic or radiologic examination results. An accurate diagnosis could be made only via a histopathologic examination through immunohistochemical staining. The clinical course of s-CCC was generally aggressive, and patients had a relatively poor *** In patients with s-CCC, early diagnosis through biopsy and aggressive treatment,including surgical resection, are important.

关键词： Intrahepatic sarcomatoid cholangiocarcinoma Immunohistochemical staining Survival Prognosis Surgical resection

Efficacy of Seprafilm~ graft with adhesiolysis in experimentally induced lid adhesion in rabbits

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International Journal of Ophthalmology(English edition) 2013年第1期6卷 44-49页

作者： Sang Wook Jin Hee Bae Ahn Mi Sook Roh Yoon Hyung Kwon Won Yeol Ryu Department of Ophthalmology College of MedicineDong-A University Department of Pathology College of MedicineDong-A University

AIM:To evaluate the efficacy of Seprafilm transplantation following adhesiolysis for preventing postoperative readhesion and improving surgical outcomes. METHODS:Primary blepharoplasty was carried out on both eyelids of 18 albino rabbits. After 2 weeks, a new skin incision was made, and adhesiolysis was performed on both eyelids. The rabbits were categorized into two groups, one with adhesiolysis alone in the left eyelid (control group), and the other with adhesiolysis with a Seprafilm graft in the right eyelid (Seprafilm group). The degrees of inflammation and fibrosis were examined with hematoxylin-eosin (HE) and Masson’s trichrome stains. Expression of α-smooth muscle actin (α-SMA) was also immunohistochemically examined. RESULTS:Eyelid examination immediately after the operation revealed mild swelling and hemorrhage in both groups, but these symptoms resolved after 1 week-2 weeks, and eyelid shape had recovered completely in both groups. Microscopic assessments demonstrated that the Seprafilm group showed less inflammation and fibrosis than the control group. The Seprafilm group also exhibited fewer α-SMA-positive cells than the control group. CONCLUSION:Based on these findings, we conclude that Seprafilm graft with adhesiolysis is an effective method for preventing postoperative readhesions after eyelid surgery.

关键词： Seprafilm adhesion adhesiolysis

Vision-Based Learning Status Monitoring on Color and Depth Live Facial Videos

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Journal of Electronic Science and Technology 2017年第2期15卷 178-186页

作者： Ya-Chun Shih Mau-Tsuen Yang National dong Hwa University Hualian 97401

This study analyzes live facial videos for recognizing nonverbal learning-related facial movements and head poses to discover the learning status of students. First, color and depth facial videos captured by a Kinect are analyzed for face tracking using a three-dimensional （3D） active appearance model （AAM）. Second, the facial feature vector sequences are used to train hidden Markov models （HMMs） to recognize seven learning-related facial movements （smile, blink, frown, shake, nod, yawn, and talk）. The final stage involves the analysis of the facial movement vector sequence to evaluate three status scores （understanding, interaction, and consciousness）, each represents the learning status of a student and is helpful to both teachers and students for improving teaching and learning. Five teaching activities demonstrate that the proposed learning status analysis system promotes the interpersonal communication between teachers and students.

关键词： Index Terms-Facial expression analysis learner status monitoring virtual English elassroom.