A Word Similarity Algorithm with Sememe Probability Density Ratio Based on HowNet

Rui Zheng,Huan Zhao,Xixiang Zhang 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.10

The study on word similarity computation plays an important role in natural language processing (NLP). Recently the algorithm based on HowNet is widely used and proves to work well in Chinese word similarity computation. However, the relationship between the number of brother nodes and the fineness of the hierarchy is not considered. This paper investigates the ratio of two words on the brother nodes’ number called sememe probability density and proposes an improved algorithm based on HowNet. The results indicate that the correlation measure of the algorithm presented by this paper is 75.4%, and it is much better than the major state-of-the-art method (68.1%).

An efficiency calibration method of segmented gamma scanning in reconstructing radioactive waste drum activity

Zheng Honglong,Tuo Xianguo,Wang Zhou,Gou Rui,Liu Qi,Li Qiang,Shi Rui,Yang Guang 한국물리학회 2024 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.84 No.4

For measuring radioactive waste drum, the segmented gamma scanning (SGS) is a quick and efective procedure. The accuracy of reconstructed radioactivity in the drum is directly impacted by SGS efciency matrix. To overcome the challenges of restricted experimental source and excessive workload in existing SGS efciency calibration methods, a new SGS efciency calibration method is presented. The point source efciency function calculates the non-attenuation efciency of each voxel in the calibrated segment. The voxel attenuation efciency is corrected by the linear attenuation coefcient for segments’ absorption. The attenuation efciency for the segment is calculated as the weighted average of all voxel attenuation efciencies in a segment. The waste drum sample is flled with a random mixture of 0.33 g·cm−3 aluminium silicate fbre, 0.64 g·cm−3 wood fbre, 1.84 g·cm−3 polyvinyl chloride plastic and a point source 60Co of 1.244× 105 Bq. The SGS system and the waste drum sample are used to complete SGS experimental measurement, efciency calibration and activity reconstruction. Result shows that the relative deviations of reconstructed activity are − 15.39–30.98% for the extreme case where just a point source 60Co is placed at 16 positions in the drum with diferent heights and eccentric distances. This relative deviation rang of reconstructed activity meets the needs of most users. Compared with other methods which have complicated computational processes, the main beneft of this work is to present a low-performance and easy-to-implement additional alternative to commercial software or existing approaches.

Historical Long-term Exposure to Pentachlorophenol Causing Risk of Cancer - A Community Study

Zheng, Rui-Zhi,Zhang, Qing-He,He, Yi-Xin,Zhang, Qian,Yang, Lin-Shen,Zhang, Zhi-Hua,Zhang, Xiu-Jun,Hu, Jing-Ting,Huang, Fen Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.2

Background: Pervious studies suggested occupational workers exposure to pentachlorophenol (PCP) might contribute to increased risk of cancer. However, few studies have focused on associations between PCP and cancer risk at the community level. Objective: The present study was to explore the cancer risk for the community population living long-term in a PCP contaminated area. Methods: All the cancer cases diagnosed in 2009-2011 in Tongling City were collected. The cancer patients' residencies were geo-referenced in each district. The historical PCP usage for each district of Tongling was calculated as the PCP pollution index, which was further used to divide into PCP exposure categories. Standardized rate ratios (SRRs) of cancer incidence were applied to detect the cancer risk as exposure grade elevated. Correlation analysis was performed to analyze the relationship between PCP pollution and cancer incidence. Results: A total of 5,288 cancer cases (3,451 male and 1,837 female) were identified. PCP usage was correlated with the incidence of leukemia (r=0.88, P=0.002) for males, and with cancer of the esophagus for males (r=0.83, P=0.008) and females (r=0.71, P=0.020). Compared with the low exposure category, significant SRRs for total cancer sites was obtained for high PCP exposure category (SRR=1.61, 95%CI=1.59-1.62). Most SRR values of the cancer sites were significantly increased as exposure grade elevated and exposure time extended. Conclusion: The present study found that community residents living in the PCP contaminated area had increased risk of cancers. Leukemias, lymphomas and nasopharyngeal and esophageal cancers are most possibly associated with PCP exposure.

A transfer learning-based particle swarm optimization algorithm for travelling salesman problem

Zheng Rui-zhao,Zhang Yong,Yang Kang 한국CDE학회 2022 Journal of computational design and engineering Vol.9 No.3

To solve travelling salesman problems (TSPs), most existing evolutionary algorithms search for optimal solutions from zero initial information without taking advantage of the historical information of solving similar problems. This paper studies a transfer learning-based particle swarm optimization (PSO) algorithm, where the optimal information of historical problems is used to guide the swarm to find optimal paths quickly. To begin with, all cities in the new and historical TSP problems are clustered into multiple city subsets, respectively, and a city topology matching strategy based on geometric similarity is proposed to match each new city subset to a historical city subset. Then, on the basis of the above-matched results, a hierarchical generation strategy of the feasible path (HGT) is proposed to initialize the swarm to improve the performance of PSO. Moreover, a problem-specific update strategy, i.e. the particle update strategy with adaptive crossover and clustering-guided mutation, is introduced to enhance the search capability of the proposed algorithm. Finally, the proposed algorithm is applied to 20 typical TSP problems and compared with 12 state-of-the-art algorithms. Experimental results show that the transfer learning mechanism can accelerate the search efficiency of PSO and make the proposed algorithm achieve better optimal paths.

Occupational Cooking and Risk of Uveal Melanoma: a Meta-analysis

Ge, Yi-Rui,Tian, Nong,Lu, Yan,Wu, Yong,Hu, Qin-Rui,Huang, Zheng-Ping Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.10

Background: Many observational studies have assessed the possible association between occupational cooking and uveal melanoma risk, but reported results are controversial. Our goal was to evaluate the association between occupational cooking and uveal melanoma risk by conducting a meta-analysis of observational studies. Methods: PubMed, EMBASE, and Web of Science were searched through June 2012 to identify all eligible studies. The pooled odds ratio (OR) with its 95% confidence interval (95%CI) was used to evaluate this association. Either a fixed- or a random-effects model were used to calculate pooled ORs. Results: Five case-control studies involving a total of 1,199 cases and 6,927 controls were included in the meta-analysis. Overall, occupational cooking was associated with an increased risk of uveal melanoma (OR: 1.81, 95%CI 1.33-2.46, P < 0.001). Subgroup analysis by gender suggested occupational cooking was associated with increased risk of uveal melanoma in both men (OR: 2.16, 95%CI 1.06-4.40, P = 0.034) and women (OR: 1.92, 95%CI 1.19-3.10, P = 0.008). Conclusion: This meta-analysis suggests that occupational cooking is associated with an increased risk of uveal melanoma in both men and women.

Serum Proteomics Analysis of Feline Mammary Carcinoma Based on Label-free and PRM Techniques

Jia-San Zheng,Ren-Yue Wei,Zheng Wang,Ting-Ting Zhu,Hong-Ri Ruan,Xue Wei,Kai-Wen Hou,Rui Wu 대한수의학회 2020 Journal of Veterinary Science Vol.21 No.3

Background: Feline mammary carcinoma is the third most common cancer that affects female cats. Objectives: The purpose of this study was to screen differential serum proteins in feline and clarify the relationship between them and the occurrence of feline mammary carcinoma. Methods: Chinese pastoral cats were used as experimental animals. Six serum samples from cats with mammary carcinoma (group T) and six serum samples from healthy cats (group C) were selected. Differential protein analysis was performed using a Label-free technique, while parallel reaction monitoring (PRM) was performed to verify the screened differential proteins. Results: A total of 82 differential proteins were detected between group T and group C, of which 55 proteins were down regulated and 27 proteins were up regulated. Apolipoprotein A-I, Apolipoprotein A-II (ApoA-II), Apolipoprotein B (ApoB), Apolipoprotein C-III (ApoC-III), coagulation factor V, coagulation factor X, C1q, albumen (ALB) were all associated with the occurrence of feline mammary carcinoma. Differential proteins were involved in a total of 40 signaling pathways, among which the metabolic pathways associated with feline mammary carcinoma were the complement and coagulation cascade and cholesterol metabolism. According to the Label-free results, ApoB, ApoC-III, ApoA-II, FN1, an uncharacterized protein, and ALB were selected for PRM target verification. The results were consistent with the trend of the label-free. Conclusions: This experimen is the first to confirm ApoA-II and ApoB maybe new feline mammary carcinoma biomarkers and to analyze their mechanisms in the development of such carcinoma in feline.

Hyaluronic acid encapsulated aminated mesoporous silica nanoparticles for pH-responsive delivery of methotrexate and release kinetics

Rui Qian,Yin Zheng‐Zhi,Cai Wenrong,Li Junyao,Wu Datong,Kong Yong 대한화학회 2022 Bulletin of the Korean Chemical Society Vol.43 No.5

A simple drug controlled delivery system is facilely designed for pH-responsive delivery of methotrexate (MTX), an anticancer drug. Aminated mesoporous silica nanoparticles (AMSNs) were first synthesized for the loading of MTX, and then the MTX-loaded AMSN (AMSN-MTX) was encapsulated with hyaluronic acid (HA) through electrostatic attractions. Successful preparation of the HAencapsulated AMSN-MTX (AMSN-MTX-HA) is confirmed by different characterizations such as scanning electron microscopy, Fourier transform infrared, x-ray diffraction, and so on. Because the protonation/deprotonation of HA is closely related to pH, the electrostatic interactions between HA and AMSN depend closely on the pH of the medium and thus pH-responsive delivery of MTX is achieved. The release kinetic data of MTX from the carrier fit well to Higuchi and Korsmeyer-Peppas models. Cell experiments indicate that the developed AMSN-MTX-HA displays high inhibitory effect on hepatoma (SMMC-7721) cells while the drug-free carrier of AMSN-HA has good biocompatibility.

Study of Noise Reduction Based on Optimal Fan Outer Pressure Ratio and Thermodynamic Performance for Turbofan Engines at Conceptual Design Stage

Rui Xue,Jun Jiang,Xing Zheng,Jian-liang Gong,Anthony Jackson 한국항공우주학회 2020 International Journal of Aeronautical and Space Sc Vol.21 No.2

With the development of civil aero-engines, the noise emission is now an essential issue to be considered during engine design. In this study, the preliminary design for a model fan, which was used for the fan noise estimation, was carried out. The fans with different bypass ratios, different tip speed as well as different aspect ratio were designed and the rough dimensions of the fan were obtained. Based on the dimension and performance of the fan, the effect of fan bypass ratio, tip speed, rotor blade numbers, and rotor–stator spacing on noise generation was investigated. The results indicate that the fan noise can be reduced as high as 10 dB by the increase of bypass ratios, and fewer rotor blade numbers and larger rotor–stator spacing are proved to be benefit to the fan noise reduction as well. However, lower tip speed does not achieve the noise reduction as expected. This is because more rotor blades are added to maintain the constant fan pressure ratio for the fan with lower tip speed. The study demonstrates that trade-off study should be carried out when considering fan noise reduction during engine design.

A triage strategy in advanced ovarian cancer management based on multiple predictive models for R0 resection: a prospective cohort study

Zheng Feng,Hao Wen,Zhaoxia Jiang,Shuai Liu,Xingzhu Ju,Xiaojun Chen,Lingfang Xia,Junyan Xu,Rui Bi,Xiaohua Wu 대한부인종양학회 2018 Journal of Gynecologic Oncology Vol.29 No.5

Objective: To present the surgical outcomes of advanced epithelial ovarian cancer (AEOC) since the implementation of a personalized approach and to validate multiple predictive models for R0 resection. Methods: Personalized strategies included: 1) Non-invasive model: preoperative clinico-radiological assessment according to Suidan criteria with a predictive score for all individuals. Patients with a score 0–2 were recommended for primary debulking surgery (PDS, group A), or otherwise were counseled on the choices of PDS, neoadjuvant chemotherapy (NAC, group B) or staging laparoscopy (S-LPS). 2) Minimally invasive model: S-LPS with a predictive index value (PIV) according to Fagotti. Individuals with a PIV <8 underwent PDS (group C) or otherwise received NAC (group D). Intraoperative assessment (with Eisenkop, peritoneal cancer index [PCI], and Aletti scores) and surgical results were prospectively collected. Results: Between September 2015 and August 2017, 161 pathologically confirmed epithelial ovarian cancer patients were included. A total of 52 (32.3%) patients had a predictive score of 0–2, and 109 (67.7%) patients had a score ≥3. Among these individuals, 41 (25.5%) patients received S-LPS. Finally, 110 (68.3%) patients underwent PDS (A+C), and 51 (31.7%) patients received NAC (B+D). The R0 resection rates in PDS and NAC patients were 56.4% and 60.8%, respectively. The area under the curve (AUC) of Suidan criteria was 0.548 for group (A+C). The AUC of Fagotti score was 0.702 for group C. The AUC of Eisenkop, PCI, and Aletti scores were 0.808, 0.797, and 0.524, respectively. Conclusion: The Suidan criteria were not effective in these AEOC patients. S-LPS was helpful in decision-making for PDS and should be endorsed in the future.

A Fabrication Process of High Volume Fraction of Jute Fiber/Polylactide Composites for Truck Liner

Rui-Hua Hu,임재규,Shuai Zheng,Ya-Nan Li,Guo-Hua Yang,김희규,Zhi-Guo Ma 한국정밀공학회 2012 International Journal of Precision Engineering and Vol.13 No.7

Aiming at the green manufacturing technology of automotive industry, in the past, some researchers have developed green materials—fully degradable natural fiber reinforced polylactide composites. In the researches, the natural fiber volume fraction (or weight fraction) ranges from 20% to 55%. In order to lower the cost of the composites, an effective way is to increase natural fiber volume fraction and decrease polylactide fraction. In this research, a more uniform fiber blending method is employed, and the natural fiber volume fraction is increased to 70%. The fabrication process includes two steps:felt making and hot pressed molding. Short jute fiber and short PLA fiber are blended on a fiber opening machine in terms of fiber volume fractions, 60% and 70% respectively. The mixtures are carded and needle punched to make felt. Then the felt is hot pressed at 180℃, and the jute/PLA composites are fabricated. Mechanical properties of the composites with different fiber volume fractions are investigated. Real size truck liners are successfully manufactured. The composites have very good formability and processability.