To understand the potential causes of laboratory-acquired infections and to provide possible solu... more To understand the potential causes of laboratory-acquired infections and to provide possible solutions that would protect laboratory personnel, samples from a viral laboratory were screened to determine the main sources of contamination with six subtypes of Rhinovirus. Rhinovirus contamination was found in the gloves, cuffs of protective wear, inner surface of biological safety cabinet (BSC) windows, and trash handles. Remarkably, high contamination was found on the inner walls of the centrifuge and the inner surface of centrifuge tube casing in the rotor. Spilling infectious medium on the surface of centrifuge tubes was found to contribute to contamination of centrifuge surfaces. Exposure to sodium hypochlorite containing no less than 0.2 g/L available chlorine decontaminated the surface of the centrifuge tubes from Rhinovirus after 2 min.
AIM: To investigate the effect of L-NAME on nitric oxide and gastrointestinal motility alteration... more AIM: To investigate the effect of L-NAME on nitric oxide and gastrointestinal motility alterations in cirrhotic rats. METHODS: Rats with cirrhosis induced by carbon tetrachloride were randomly divided into two groups, one(n=13) receiving 0.5mg·kg -1 per day of N-G-nitro-L-arginine methyl ester (L-NAME), a nitric oxide synthase inhibitor, for 10 days, whereas the other group (n=13) and control (n=10) rats were
There exist many computer graphics techniques which could achieve high quality tree generation. H... more There exist many computer graphics techniques which could achieve high quality tree generation. However, only a few works focus on realistic modeling of tree bark. Dif- ficulties lie in the complex appearance of the bark surfaces which are largely determined by their mesostructures. Un- like traditional physical based methods, in this paper, we present an appearance-based method to model tree
ABSTRACT In this paper, we present a method to identify topics in email messages. The formal conc... more ABSTRACT In this paper, we present a method to identify topics in email messages. The formal concept analysis is adopted as a semantic analysis method to group emails containing the same keywords to concepts. The fuzzy membership functions are used to rank the concepts based on the features of the emails, such as the senders, recipients, time span, and frequency of emails in the concepts. The highly ranked concepts are then identified as email topics. Experimental results on the Enron email dataset illustrate the effectiveness of the method. Ce document présente une méthode de détermination des sujets dans des courriels. L'analyse formelle de concepts est adoptée comme méthode d'analyse sémantique pour associer les courriels contenant les mêmes mots-clés à des concepts. Les fonctions d'appartenance floue sont utilisées pour classer les concepts selon les caractéristiques des courriels, par exemple l'expéditeur, le destinataire, l'intervalle de temps et la fréquence des courriels dans les concepts. Les concepts de rang supérieur sont ensuite indiqués comme sujets des courriels. Les résultats expérimentaux tirés du corpus de courriels d'Enron illustrent l'efficacité de cette méthode.
2008 IEEE MTT-S International Microwave Workshop Series on Art of Miniaturizing RF and Microwave Passive Components, 2008
The design of a compact microwave diplexer is presented. Folded structures with coupled cavities ... more The design of a compact microwave diplexer is presented. Folded structures with coupled cavities are used to minimize its size. The sample diplexer is fabricated and the tested results show good agreement with the design target.
2009 IEEE Conference on Computer Vision and Pattern Recognition, 2009
Linear discriminant analysis (LDA) is a popular feature extraction method that has aroused consid... more Linear discriminant analysis (LDA) is a popular feature extraction method that has aroused considerable interests in computer vision and pattern recognition fields. The projection vectors of LDA is usually achieved by maximizing the between-class scatter and simultaneously minimizing the within-class scatter of the data set. However, in practice, there is usually a lack of sufficient labeled data, which makes the
ACM SIGGRAPH 2004 Sketches on - SIGGRAPH '04, 2004
This paper presents a self-reconfigurable camera array system that captures video sequences from ... more This paper presents a self-reconfigurable camera array system that captures video sequences from an array of mobile cameras, renders novel views on the fly and reconfigures the camera positions to achieve better rendering quality. The system is composed of 48 cameras mounted on mobile platforms. The contribution of this paper is twofold. First, we propose an efficient algorithm that is
Abstract: Private information management and compliance are important issues nowadays for most of... more Abstract: Private information management and compliance are important issues nowadays for most of organizations. As a major communication tool for organizations, email is one of the many potential sources for privacy leaks. Information extraction methods have been ...
Proceedings of the eighteenth ACM SIGSOFT international symposium on Foundations of software engineering - FSE '10, 2010
A replay tool aiming to reproduce a program's execution interposes itself at an appropriate repla... more A replay tool aiming to reproduce a program's execution interposes itself at an appropriate replay interface between the program and the environment. During recording, it logs all non-deterministic side effects passing through the interface from the environment and feeds them back during replay. The replay interface is critical for correctness and recording overhead of replay tools.
2011 19th International Conference on Geoinformatics, 2011
ABSTRACT Cold production is a method for enhancing primary production from heavy oil reservoirs. ... more ABSTRACT Cold production is a method for enhancing primary production from heavy oil reservoirs. Reservoir conditions, perforation and completion technology are the key issues to affect production rate of cold production. In the same condition of perforation and completion, the reservoir properties controls production rate of cold production. In this paper, the reservoir characteristics in the Sparky and Lloydminster formations of sixty-three wells of Alberta Lloydminster block are evaluated through core measurements and detailed petrophysical analyses. The distributions of reservoir porosity, permeability and effective thickness are displayed using GIS software. Investigation of the relationships between reservoir properties and productivities of cold production indicates that porosity, clay content and effective thickness mainly contribute to productivity for sandstone heavy oil reservoir. However, effective thickness is not one of the key factors on productivity for siltstone reservoir. The result will provide a foundation for reservoir simulation in heavy oil exploitation.
The Chinese-German Journal of Clinical Oncology, 2010
Male breast cancer (MBC) only with a proportion of less than 1% of all the breast cancer though t... more Male breast cancer (MBC) only with a proportion of less than 1% of all the breast cancer though the incidence is increasing now [1, 2], this may account for the studies involved MBC both in the West and the East countries were small sample and non-randomization. The ...
Three novel, water-soluble N-substituted 1,8-naphthalimides as the spectroscopic probes of nuclei... more Three novel, water-soluble N-substituted 1,8-naphthalimides as the spectroscopic probes of nucleic acid, N-(2-hydroxyethyl)-1,8-naphthalimide (NI1), 1,8-naphthalimide-N-acetic acid (NI2) and 1,8-naphthalimide-N-caproic acid (NI3), were synthesized and photophysically characterized. The steady-state fluorescence quenching of the NI probes with nucleic acids (NA) and their precursors (nucleobases and nucleosides) were studied by Stern-Volmer correlation. The rate constants for bimolecular quenching were obtained in Tris buffer solution. The transient absorption spectroscopy by nanosecond laser flash photolysis were explored to identify the transient species and to determine the kinetics. The dynamic interaction mechanism was attributed to electron transfer (ET) and energy transfer via 3 NI.
Fen zi xi bao sheng wu xue bao = Journal of molecular cell biology / Zhongguo xi bao sheng wu xue xue hui zhu ban, 2008
The cDNA of IgE constant domain of rat was cloned from the spleen of allergy asthma rat by RT-PCR... more The cDNA of IgE constant domain of rat was cloned from the spleen of allergy asthma rat by RT-PCR. The IL-1ra segment was obtained from intermediate vector pBV220-IL-1ra. By overlap extension PCR, the fusion gene IL-1ra-Fcepsilon was cloned, then inserted into the eukaryotic expression plasmid pIRES2-EGFP to obtain a recombinant expression plasmid pIRES2-EGFP-IL-1ra-Fcepsilon. The recombinant expression plasmid was transfected into 293T cells using lipofectamin and instillated into the rat lung through trachea. The expression of IL-1ra-Fcepsilon was identified by Western blot, RT-PCR, and this protein could inhibit the activity of IL-1 in vitro. Green fluorescent protein could be detected in the transfected 293T cells and the rat lungs at different times. The research paved the way for the gene therapy of allergy asthma.
Proceedings of the 2007 symposium on Interactive 3D graphics and games - I3D '07, 2007
High dynamic range (HDR) images are increasingly employed in games and interactive applications f... more High dynamic range (HDR) images are increasingly employed in games and interactive applications for accurate rendering and illumination. One disadvantage of HDR images is their large data size; unfortunately, even though solutions have been proposed for future hardware, commodity graphics hardware today does not provide any native compression for HDR textures.
To understand the potential causes of laboratory-acquired infections and to provide possible solu... more To understand the potential causes of laboratory-acquired infections and to provide possible solutions that would protect laboratory personnel, samples from a viral laboratory were screened to determine the main sources of contamination with six subtypes of Rhinovirus. Rhinovirus contamination was found in the gloves, cuffs of protective wear, inner surface of biological safety cabinet (BSC) windows, and trash handles. Remarkably, high contamination was found on the inner walls of the centrifuge and the inner surface of centrifuge tube casing in the rotor. Spilling infectious medium on the surface of centrifuge tubes was found to contribute to contamination of centrifuge surfaces. Exposure to sodium hypochlorite containing no less than 0.2 g/L available chlorine decontaminated the surface of the centrifuge tubes from Rhinovirus after 2 min.
AIM: To investigate the effect of L-NAME on nitric oxide and gastrointestinal motility alteration... more AIM: To investigate the effect of L-NAME on nitric oxide and gastrointestinal motility alterations in cirrhotic rats. METHODS: Rats with cirrhosis induced by carbon tetrachloride were randomly divided into two groups, one(n=13) receiving 0.5mg·kg -1 per day of N-G-nitro-L-arginine methyl ester (L-NAME), a nitric oxide synthase inhibitor, for 10 days, whereas the other group (n=13) and control (n=10) rats were
There exist many computer graphics techniques which could achieve high quality tree generation. H... more There exist many computer graphics techniques which could achieve high quality tree generation. However, only a few works focus on realistic modeling of tree bark. Dif- ficulties lie in the complex appearance of the bark surfaces which are largely determined by their mesostructures. Un- like traditional physical based methods, in this paper, we present an appearance-based method to model tree
ABSTRACT In this paper, we present a method to identify topics in email messages. The formal conc... more ABSTRACT In this paper, we present a method to identify topics in email messages. The formal concept analysis is adopted as a semantic analysis method to group emails containing the same keywords to concepts. The fuzzy membership functions are used to rank the concepts based on the features of the emails, such as the senders, recipients, time span, and frequency of emails in the concepts. The highly ranked concepts are then identified as email topics. Experimental results on the Enron email dataset illustrate the effectiveness of the method. Ce document présente une méthode de détermination des sujets dans des courriels. L'analyse formelle de concepts est adoptée comme méthode d'analyse sémantique pour associer les courriels contenant les mêmes mots-clés à des concepts. Les fonctions d'appartenance floue sont utilisées pour classer les concepts selon les caractéristiques des courriels, par exemple l'expéditeur, le destinataire, l'intervalle de temps et la fréquence des courriels dans les concepts. Les concepts de rang supérieur sont ensuite indiqués comme sujets des courriels. Les résultats expérimentaux tirés du corpus de courriels d'Enron illustrent l'efficacité de cette méthode.
2008 IEEE MTT-S International Microwave Workshop Series on Art of Miniaturizing RF and Microwave Passive Components, 2008
The design of a compact microwave diplexer is presented. Folded structures with coupled cavities ... more The design of a compact microwave diplexer is presented. Folded structures with coupled cavities are used to minimize its size. The sample diplexer is fabricated and the tested results show good agreement with the design target.
2009 IEEE Conference on Computer Vision and Pattern Recognition, 2009
Linear discriminant analysis (LDA) is a popular feature extraction method that has aroused consid... more Linear discriminant analysis (LDA) is a popular feature extraction method that has aroused considerable interests in computer vision and pattern recognition fields. The projection vectors of LDA is usually achieved by maximizing the between-class scatter and simultaneously minimizing the within-class scatter of the data set. However, in practice, there is usually a lack of sufficient labeled data, which makes the
ACM SIGGRAPH 2004 Sketches on - SIGGRAPH '04, 2004
This paper presents a self-reconfigurable camera array system that captures video sequences from ... more This paper presents a self-reconfigurable camera array system that captures video sequences from an array of mobile cameras, renders novel views on the fly and reconfigures the camera positions to achieve better rendering quality. The system is composed of 48 cameras mounted on mobile platforms. The contribution of this paper is twofold. First, we propose an efficient algorithm that is
Abstract: Private information management and compliance are important issues nowadays for most of... more Abstract: Private information management and compliance are important issues nowadays for most of organizations. As a major communication tool for organizations, email is one of the many potential sources for privacy leaks. Information extraction methods have been ...
Proceedings of the eighteenth ACM SIGSOFT international symposium on Foundations of software engineering - FSE '10, 2010
A replay tool aiming to reproduce a program's execution interposes itself at an appropriate repla... more A replay tool aiming to reproduce a program's execution interposes itself at an appropriate replay interface between the program and the environment. During recording, it logs all non-deterministic side effects passing through the interface from the environment and feeds them back during replay. The replay interface is critical for correctness and recording overhead of replay tools.
2011 19th International Conference on Geoinformatics, 2011
ABSTRACT Cold production is a method for enhancing primary production from heavy oil reservoirs. ... more ABSTRACT Cold production is a method for enhancing primary production from heavy oil reservoirs. Reservoir conditions, perforation and completion technology are the key issues to affect production rate of cold production. In the same condition of perforation and completion, the reservoir properties controls production rate of cold production. In this paper, the reservoir characteristics in the Sparky and Lloydminster formations of sixty-three wells of Alberta Lloydminster block are evaluated through core measurements and detailed petrophysical analyses. The distributions of reservoir porosity, permeability and effective thickness are displayed using GIS software. Investigation of the relationships between reservoir properties and productivities of cold production indicates that porosity, clay content and effective thickness mainly contribute to productivity for sandstone heavy oil reservoir. However, effective thickness is not one of the key factors on productivity for siltstone reservoir. The result will provide a foundation for reservoir simulation in heavy oil exploitation.
The Chinese-German Journal of Clinical Oncology, 2010
Male breast cancer (MBC) only with a proportion of less than 1% of all the breast cancer though t... more Male breast cancer (MBC) only with a proportion of less than 1% of all the breast cancer though the incidence is increasing now [1, 2], this may account for the studies involved MBC both in the West and the East countries were small sample and non-randomization. The ...
Three novel, water-soluble N-substituted 1,8-naphthalimides as the spectroscopic probes of nuclei... more Three novel, water-soluble N-substituted 1,8-naphthalimides as the spectroscopic probes of nucleic acid, N-(2-hydroxyethyl)-1,8-naphthalimide (NI1), 1,8-naphthalimide-N-acetic acid (NI2) and 1,8-naphthalimide-N-caproic acid (NI3), were synthesized and photophysically characterized. The steady-state fluorescence quenching of the NI probes with nucleic acids (NA) and their precursors (nucleobases and nucleosides) were studied by Stern-Volmer correlation. The rate constants for bimolecular quenching were obtained in Tris buffer solution. The transient absorption spectroscopy by nanosecond laser flash photolysis were explored to identify the transient species and to determine the kinetics. The dynamic interaction mechanism was attributed to electron transfer (ET) and energy transfer via 3 NI.
Fen zi xi bao sheng wu xue bao = Journal of molecular cell biology / Zhongguo xi bao sheng wu xue xue hui zhu ban, 2008
The cDNA of IgE constant domain of rat was cloned from the spleen of allergy asthma rat by RT-PCR... more The cDNA of IgE constant domain of rat was cloned from the spleen of allergy asthma rat by RT-PCR. The IL-1ra segment was obtained from intermediate vector pBV220-IL-1ra. By overlap extension PCR, the fusion gene IL-1ra-Fcepsilon was cloned, then inserted into the eukaryotic expression plasmid pIRES2-EGFP to obtain a recombinant expression plasmid pIRES2-EGFP-IL-1ra-Fcepsilon. The recombinant expression plasmid was transfected into 293T cells using lipofectamin and instillated into the rat lung through trachea. The expression of IL-1ra-Fcepsilon was identified by Western blot, RT-PCR, and this protein could inhibit the activity of IL-1 in vitro. Green fluorescent protein could be detected in the transfected 293T cells and the rat lungs at different times. The research paved the way for the gene therapy of allergy asthma.
Proceedings of the 2007 symposium on Interactive 3D graphics and games - I3D '07, 2007
High dynamic range (HDR) images are increasingly employed in games and interactive applications f... more High dynamic range (HDR) images are increasingly employed in games and interactive applications for accurate rendering and illumination. One disadvantage of HDR images is their large data size; unfortunately, even though solutions have been proposed for future hardware, commodity graphics hardware today does not provide any native compression for HDR textures.
Uploads
Papers by Xin Wang