Article Type: Research Article
Abstract: In the large-scale application of mobile Internet today, in order to meet the requirements of cross-platform application, its development is growing louder and louder. Therefore, the application of the latest Internet technology standard HTML5 in the development of mobile Internet was put forward in this paper. The technical characteristics of HTML5 and its applications in mobile Internet were described in detail. Then MVC model was regarded as the guiding ideology, and through the HTML5 technical standards, the framework of mobile application for the development of mobile applications was designed. The framework of the core library pine was designed, and the …framework was realized. The framework was tested on different hardware and operating systems, and the results showed that the framework could be used in various operating platforms and operating systems. Show more
Keywords: Mobile internet, HTML5, mobile application framework
DOI: 10.3233/JIFS-169388
Citation: Journal of Intelligent & Fuzzy Systems, vol. 34, no. 2, pp. 945-954, 2018
Authors: Chen, Chien-Chang | Chien, Yu-Wei
Article Type: Research Article
Abstract: This work presents a secret image sharing approach for sharing several secret images while reducing each participants possessing load to only one shared image. The proposed approach employs a random image and a hash function to create corresponding random-like shift images for each secret image, and then publishes the generated images. The random image is then secretly shared to each participant, such that each participant can only possess one shared image to recover the random image, thus enabling the computation of all secret images. The contiguous hash results modify the secret images to random-like public images that are secure for …malicious attacks. Experimental results indicate that the proposed method can share several secret images but reduce the possessing load of each participant efficiently. Attacks on shared or public images are also discussed. Show more
Keywords: multistage secret sharing, secret image sharing, hash function
Citation: Fundamenta Informaticae, vol. 86, no. 4, pp. 447-458, 2008
Authors: Tang, Xiaoyue | Li, Shijun | Yu, Wei
Article Type: Research Article
Abstract: The paper uses BP neural network method to analyze the behavior preference of web users to achieve user behavior clustering, help advertisers to find online advertising design and optimize web design. At the same time, the paper analyzes the user preference cluster analysis, which helps users to find the desired webpage and content more conveniently, shorten the retrieval time and improve the retrieval efficiency. Firstly, the paper analyzes the log files of the web server, and then conducts session classification, finds the frequent data from the session vector, and normalizes the generated pattern vector. The BP SOFM model is used …to cluster the user behavior preferences to generate users. Clustering. The experimental results show that BP neural network analysis method can effectively analyze user preferences and cluster user behavior. Show more
Keywords: BP neural network, cluster analysis, web user preference analysis, SOFM
DOI: 10.3233/JIFS-179480
Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 2, pp. 1189-1196, 2020
Authors: Gan, Lin | Li, Shijun | Shu, Zhan | Yu, Wei
Article Type: Research Article
Abstract: With the daily release of the huge amount of new information, the web information such as video, image, audio and text information is growing dramatically. Most of this vast information changes over time. It may become ineffective, obsolete and worthless, and even affect user’s understanding of web information, degrade their experience. Therefore, analyzing this temporal-sensitive information in multimedia is a vital issue. To this end, this paper analyses the temporal sensitivity of multimedia web information to find what kind of information is temporal-sensitive, how this information is responsive to time, and how to evaluate the temporal sensitivity of information. We …start with four types of features, that is time, content, user behavior and related multimedia news, then set up a triple model to depict news. By establishing the energy transfer relationship between news and related and similar news, time, and user behavior, we measure the energy, and use the change ratio of energy as the temporal sensitivity of news. The data set is a multimedia news corpus, including video, image and text news. In the experiment, we take the users’ comments as the validation set. The result basically matches the validation set, and it shows our metric is reasonable. Show more
Keywords: Big data analysis, temporal metric, temporal sensitivity, multimedia news
DOI: 10.3233/JIFS-179479
Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 2, pp. 1181-1188, 2020
Authors: He, Yu | Wang, Chengxiang | Yu, Wei | Wang, Jiaxi
Article Type: Research Article
Abstract: BACKGROUND: Due to the incomplete projection data collected by limited-angle computed tomography (CT), severe artifacts are present in the reconstructed image. Classical regularization methods such as total variation (TV) minimization, ℓ0 minimization, are unable to suppress artifacts at the edges perfectly. Most existing regularization methods are single-objective optimization approaches, stemming from scalarization methods for multiobjective optimization problems (MOP). OBJECTIVE: To further suppress the artifacts and effectively preserve the edge structures of the reconstructed image. METHOD: This study presents a multiobjective optimization model incorporates both data fidelity term and ℓ0 -norm of the image gradient as objective functions. It employs an …iterative approach different from traditional scalarization methods, using the maximization of structural similarity (SSIM) values to guide optimization rather than minimizing the objective function.The iterative method involves two steps, firstly, simultaneous algebraic reconstruction technique (SART) optimizes the data fidelity term using SSIM and the Simulated Annealing (SA) algorithm for guidance. The degradation solution is accepted in the form of probability, and guided image filtering (GIF) is introduced to further preserve the image edge when the degradation solution is rejected. Secondly, the result from the first step is integrated into the second objective function as a constraint, we use ℓ0 minimization to optimize ℓ0 -norm of the image gradient, and the SSIM, SA algorithm and GIF are introduced to guide optimization process by improving SSIM value like the first step. RESULTS: With visual inspection, the peak signal-to-noise ratio (PSNR), root mean square error (RMSE), and SSIM values indicate that our approach outperforms other traditional methods. CONCLUSIONS: The experiments demonstrate the effectiveness of our method and its superiority over other classical methods in artifact suppression and edge detail restoration. Show more
Keywords: CT reconstruction, limited-angle CT, image quality assessment, multiobjective optimization
DOI: 10.3233/XST-240111
Citation: Journal of X-Ray Science and Technology, vol. Pre-press, no. Pre-press, pp. 1-29, 2024
Authors: FAN, Zhi-jin | HU, Ji-ye | AI, Ying-wei | QIAN, Chuan-fan | YU, Wei-qiang | LI, Zheng-ming
Article Type: Research Article
Abstract: HPLC-UV residue analytical method for monosulfuron [N-[(4'-methyl) pyrimidin-2'-yl]-2-nitrophenylsulfonyl urea] in soil and wheat was developed. Monosulfuron residues were recovered by solvent extraction, followed by liquid-liquid partition, and C_{18} column clean-up. Excellent method recoveries ranging from 95%–104% for both fortified soil and wheat grain were obtained with coefficients of variation 1.5%–11.8%. The minimum detectable quantities in soil and wheat were both 4 ng, the limit of detection was 0.02 mg/kg. When monosulfuron was applied according to double dosage of maximum recommended use direction (120 g ai/hm^2 of 10% monosulfuron wettable powder sprayed for once during development of wheat) in field studies …conducted in Shandong Province and near Beijing, monosulfuron residues was not detected in soil and wheat samples collected 75 d after application. Laboratory soil degradation studies showed that monosulfuron degraded faster in acidic soil and strong alkaline soil than in neutral or weak alkaline soil. Half lives in Jiangxi soil, Shijiazhuang soil, Jiangsu soil and Heilongjiang soil were 41, 48, 87 and 84 d respectively. Monosulfuron residues dissipated rapidly in Shandong and Beijing field test sites with half-lives of less than 14 d. Show more
Keywords: monosulfuron, wheat (Triticum, aestivum L.), soil degradation, residue analysis
Citation: Journal of Environmental Sciences, vol. 16, no. 5, pp. 717-721, 2004
Authors: Yu, Wei-Ye | Zhang, Qian Qian | Xiao, Yong | Tan, Wei-Guo | Li, Xiang-Dong | Lu, Pu-Xuan
Article Type: Research Article
Abstract: OBJECTIVE: To explore the difference of 18F-FDG PET/CT images between the symptomatic and asymptomatic pulmonary tuberculosis, as well as the correlation between the standard uptake value (SUV) and the symptomatic/asymptomatic pulmonary tuberculosis. METHODS: A study dataset of 57 pulmonary tuberculosis cases was retrospectively assembled and analyzed. Among these cases, 30 were diagnosed having symptomatic pulmonary tuberculosis and 27 were asymptomatic pulmonary tuberculosis. PET/CT was performed in all 57 cases. The clinical data, CT images and PET/CT radioactive uptake data were analyzed using statistical data analysis software. RESULTS: All 57 cases showed radioactively high uptake, with the maximum standard uptake value …(SUVmax) of the lesion ranging from 1.60 to 27.30 and a mean value of 6.63±4.82. The symptomatic cases had an SUVmax of 8.76±4.97 and the asymptomatic cases had an SUVmax of 4.27±3.39. The SUVmax as well as singular or multiple lesions showed statistical differences between symptomatic and asymptomatic cases. CONCLUSION: The symptomatic pulmonary tuberculosis cases show significantly higher SUVmax than the asymptomatic cases. Based on the criteria of SUVmax greater than 2.0 to define active lesions, 100% of symptomatic cases might have active lesions while 70.4% of asymptomatic cases might have active lesions. Therefore, focused attention should be clinically paid on the asymptomatic cases of pulmonary tuberculosis to avoid miss diagnosis and delayed treatment. Show more
Keywords: PET/CT, active, pulmonary tuberculosis
DOI: 10.3233/XST-190543
Citation: Journal of X-Ray Science and Technology, vol. 27, no. 5, pp. 899-906, 2019
Authors: Zhang, Jian-Qiao | Zeng, Zhong-You | Lu, Hui-Gen | Yu, Wei | Hu, Xu-Qi | Chen, Wei-Shan | Chen, Gang
Article Type: Research Article
Abstract: BACKGROUND: Percutaneous kyphoplasty (PKP) or percutaneous vertebroplasty (PVP) are commonly employed for Kummell’s disease in stages II–III; however, these techniques produce some complications. OBJECTIVE: To compare the clinical efficacy and imaging results of percutaneous vertebroplasty + bone cement-augmented short-segment pedicle screw fixation (PSPVP) versus transpedicular intracorporeal bone grafting + pedicle screw fixation (PSIBG) in the treatment of stage II–III Kummell’s disease. METHODS: A total of 69 patients admitted between November 2017 and March 2021 were included in this study; 36 of these were treated with PSPVP, and 33 were treated with PSIBG. Patients in the two groups were compared in terms of …perioperative, follow-up, and imaging data. RESULTS: No statistically significant differences were found between the two groups in terms of operation duration (P > 0.05). However, the PSPVP group was superior to the PSIBG group in terms of incision length, intraoperative blood loss, and length of stay (P < 0.05). All patients were followed up for more than 12 months. The VAS score, height of anterior vertebral margin, kyphosis Cobb angle, wedge angle of the affected vertebra at seven days after surgery and last follow-up, and the ODI index at the last follow-up of the two groups were significantly improved compared with figures before surgery (P < 0.05). Compared with values before surgery, no statistically significant differences were found in the height of the posterior vertebral margin in the PSPVP group at seven days after surgery and at the last follow-up (P > 0.05). There were also no statistically significant differences in the VAS score, ODI index, kyphosis Cobb angle, and wedge angle of the affected vertebra between the two groups at corresponding time points (P > 0.05). The heights of the anterior and posterior vertebral margins in the PSIBG group were better than those in the PSPVP group after surgery and at the last follow-up (P < 0.05). In the PSPVP group, a pedicle screw fracture occurred in one patient two months after surgery, while an upper adjacent vertebral fracture occurred in one patient eight months after surgery. CONCLUSION: Both PSPVP and PSIBG can achieve good early clinical efficacy in the treatment of stage II–III Kummell’s disease, with PSPVP being relatively less invasive while producing a poorer orthopedic effect and more complications than PSIBG. Show more
Keywords: Spinal fracture, osteoporosis, kyphosis, Kummell’s disease
DOI: 10.3233/BME-221456
Citation: Bio-Medical Materials and Engineering, vol. 34, no. 3, pp. 261-276, 2023
Authors: Cheng, Chia-Hsiung | Hsieh, Yu-Wei | Chang, Chiung-Chih | Hsiao, Fu-Jung | Chen, Li-Fen | Wang, Pei-Ning
Article Type: Research Article
Abstract: Background: Multidomain intervention may delay or ameliorate cognitive decline in older adults at risk of Alzheimer’s disease, particularly in the memory and inhibitory functions. However, no study systematically investigates the changes of brain function in cognitively-normal elderly with subjective cognitive decline (SCD) when they receive multidomain intervention. Objective: We aimed to examine whether a multidomain intervention could improve neuropsychological function and neurophysiological activities related to memory and inhibitory function in SCD subjects. Methods: Eight clusters with a total of 50 community-dwelling SCD older adults were single-blind, randomized into intervention group, which received physical and cognitive training, or control group, which …received treatment as usual. For the neuropsychological function, a composite Z score from six cognitive tests was calculated and compared between two groups. For the neurophysiological activities, event-related potentials (ERPs) of memory function, including mismatch negativity (MMN) and memory-P3, as well as ERPs of inhibitory function, including sensory gating (SG) and inhibition-P3, were measured. Assessments were performed at baseline (T1), end of the intervention (T2), and 6 months after T2 (T3). Results: For the neuropsychological function, the effect was not observed after the intervention. For the neurophysiological activities, improved MMN responses of ΔT2–T1 were observed in the intervention group versus the control group. The multidomain intervention produced a sustained effect on memory-P3 latencies of ΔT3–T1. However, there were no significant differences in changes of SG and inhibition-P3 between intervention and control groups. Conclusions: While not impactful on neuropsychological function, multidomain intervention enhances specific neurophysiological activities associated with memory function. Show more
Keywords: Alzheimer’s disease, event-related potential, lifestyle intervention, mismatch negativity, multidomain intervention, occupational therapy, P3
DOI: 10.3233/JAD-231257
Citation: Journal of Alzheimer's Disease, vol. 100, no. 1, pp. 175-192, 2024
Authors: Yu, Wei | Hegarty, John P. | Berg, Arthur | Kelly, Ashley A. | Wang, Yunhua | Poritz, Lisa S. | Franke, Andre | Schreiber, Stefan | Koltun, Walter A. | Lin, Zhenwu
Article Type: Research Article
Abstract: PTPN2 is a risk gene for Crohn's disease (CD). We investigated whether PTPN2 genetic variants (rs2542151 and rs2542152) were associated with CD in a familial IBD registry. Both rs2542151 and rs2542152 are associated with CD, but not ulcerative colitis (UC). mRNA expression levels of PTPN2 were significantly increased in intestinal tissues (p=0.0493), and nearly significantly increased in B cells (p=0.0889) from CD patients, but not significantly altered in UC. cDNA microarray results found that PTPN2 was down-regulated by NKX2-3 knockdown in human cells. We confirmed this observation by RT-PCR analyses in NKX2-3 knockdown in B cells from IBD patients and …human intestinal microvascular endothelial cells (HIMEC). In addition, we found that mRNA expression of another IBD-associated gene, NKX2-3, was increased in intestinal tissues and B cells from CD patients, but not significantly increased in UC patients. A positive correlation was observed between mRNA expression of PTPN2 and NKX2-3 in B cells and in intestinal tissues from both CD and UC patients. These results suggest that PTPN2 may have an important role in CD pathogenesis and may represent a potential diagnostic and therapeutic target for IBD. Show more
Keywords: PTPN2, association, Crohn's disease, gene expression, NKX2-3
DOI: 10.3233/DMA-2011-0867
Citation: Disease Markers, vol. 32, no. 2, pp. 83-91, 2012