Search results for: Kaiping Liu

Items from 1 to 20 out of 20 results

article

A Superparamagnetic Composite Hydrogel Scaffold as In Vivo Dynamic Monitorable Theranostic Platform for Osteoarthritis Regeneration

Mayifei Rong, Dingge Liu, Xiaoguang Xu, Ang Li, more

Advanced Materials > 36 > 35 > n/a - n/a

Osteoarthritis (OA) is a prevalent disease, characterized by subchondral fractures in its initial stages, which has no precise and specific treatment now. Here, a novel multifunctional scaffold is synthesized by photopolymerizing glycidyl methacrylate‐modified hyaluronic acid (GMHA) as the matrix in the presence of hollow porous magnetic microspheres based on hydroxyapatite. In vivo subchondral bone...

article

Inhibition of phosphodiesterase 2 by Bay 60-7550 decreases ethanol intake and preference in mice

Jing Shi, Huaxia Liu, Jianchun Pan, Jie Chen, more

Psychopharmacology > 2018 > 235 > 8 > 2377-2385

Rationale Alcohol use disorder (AUD) is a chronically relapsing condition, which affects nearly 11% of population worldwide. Currently, there are only three FDA-approved medications for treatment of AUD, and normally, satisfactory effects are hard to be achieved. Cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) signaling has been implicated in regulation of ethanol intake...

article

Crystal structure and luminescence properties of Bi3+activated Ca2Y8(SiO4)6O2 phosphors under near UV excitation

Zhihua Sun, Minqiang Wang, Zhi Yang, Kaiping Liu, more

Journal of Solid State Chemistry > 2016 > 239 > C > 165-169

Oxyapatite Ca₂Y_8−x(SiO₄)₆O₂:xBi³⁺phosphor has been prepared via high temperature solid-state reaction. Its crystal structure and PL properties were investigated by X-ray diffraction, photoluminescence excitation and emission spectra. The results indicated that the Ca₂Y₈(SiO₄)₆O₂ crystallizes as a hexagonal structure with a space group of P6₃/m and lattice constants of a=b=9.3507Å, c=6.7899Å, α=β=90...

article

Enhanced red emission from Eu3+–Bi3+ co-doped Ca2YSbO6 phosphors for white light-emitting diode

Zhihua Sun, Minqiang Wang, Zhi Yang, Ziqiang Jiang, more

Journal of Alloys and Compounds > 2016 > 658 > C > 453-458

Bi³⁺ and Eu³⁺ ions co-doped Ca₂YSbO₆ have been prepared via high temperature solid–state reaction. Its crystal structure and photoluminescence properties were investigated by X-ray diffraction patterns, diffuse reflection spectra, photoluminescence excitation and emission spectra. The results indicated that the Ca₂YSbO₆ crystallizes as a monoclinic structure with a space group of P21/n, with the lattice...

chapter

Faceted Bug Report Search with Topic Model

Kaiping Liu, Hee Beng Kuan Tan

2014 IEEE 38th Annual Computer Software and Applications Conference > 123 - 128

2014 IEEE 38th Annual Computer Software and Applications Conference (COMPSAC)

During bug reporting, The same bugs could be repeatedly reported. As a result, extra time could be spent on bug triaging and fixing. In order to reduce redundant effort, it is important to provide bug reporters with the ability to search for previously reported bugs efficiently and accurately. The existing bug tracking systems are using relatively simple ranking functions, which often produce unsatisfactory...

article

Hydrogen Generation on NaBH4 Catalyzed by Co-B/Rare Earth Oxides

Jiuran Wen, Juncong Wei, Fei Geng, Xueping Zheng, more

Rare Metal Materials and Engineering > 2014 > 43 > 3 > 575-578

The effect of catalyst systems Co ₂ B/rare earth oxides on the properties of hydrogen generation of NaBH ₄ was studied. The results show that doping with Co ₂ B/CeO ₂ and Co ₂ B/Sm ₂ O ₃ increases the amount of hydrogen generation of NaBH ₄ obviously. Among all samples, the sample doped with Co ₂ B/CeO ₂ with ratio of...

chapter

Mining Attribute Lifecycle to Predict Faults and Incompleteness in Database Applications

Kaiping Liu, Hee Beng Kuan Tan

2013 20th Asia-Pacific Software Engineering Conference (APSEC) > 1 > 223 - 230

2013 20th Asia-Pacific Software Engineering Conference (APSEC)

In a database application, for each attribute, a value is created initially via insertion. Then, the value can be referenced or updated via selection and updating respectively. Eventually, when the record is deleted, the values of the attributes are also deleted. These occurrences of events are associated with the states to constitute the attribute lifecycle. Our empirical studies discover that faults...

chapter

Has this bug been reported?

Kaiping Liu, Hee Beng Kuan Tan, Hongyu Zhang

2013 20th Working Conference on Reverse Engineering (WCRE) > 82 - 91

2013 20th Working Conference on Reverse Engineering (WCRE)

Bug reporting is essentially an uncoordinated process. The same bugs could be repeatedly reported because users or testers are unaware of previously reported bugs. As a result, extra time could be spent on bug triaging and fixing. In order to reduce redundant effort, it is important to provide bug reporters with the ability to search for previously reported bugs. The search functions provided by the...

article

Supporting the adaptation of open-source database applications through extracting data lifecycles

Kaiping Liu, Hee Tan, Xu Chen

IET Software > 2013 > 7 > 4

The adaptation of open-source database applications is common in the industry. Most open-source database applications are incomplete. During adaptation, users usually have to implement additional data maintenance. Hence, the completeness of an application is an important concern for the adaptation as a key factor to indicate how much additional effort is required before using a system. From our study...

article

Binary Code Analysis

Kaiping Liu, Hee Beng Kuan Tan, Xu Chen

Computer > 2013 > 46 > 8 > 60 - 68

Static and dynamic analysis of binary code can provide useful information to security researchers without access to assembly code. However, these approaches currently require separate tools, forcing users to perform distinct analysis and then combine the results.

chapter

Automated Insertion of Exception Handling for Key and Referential Constraints

Kaiping Liu, Hee Beng Kuan Tan

2012 19th Asia-Pacific Software Engineering Conference > 1 > 848 - 856

2012 19th Asia-Pacific Software Engineering Conference (APSEC)

Key and referential constraints are the two main integrity constraints in database applications. These constraints can be enforced by the Database Management System automatically. Any violation from these constraints is handled by programmer's written code. This paper proposes an approach to relieve the burden of programmers from the mechanical coding for the exception handling of these constraints...

chapter

Semi-Automated Verification of Defense against SQL Injection in Web Applications

Kaiping Liu, Hee Beng Kuan Tan, Lwin Khin Shar

2012 19th Asia-Pacific Software Engineering Conference > 1 > 91 - 96

2012 19th Asia-Pacific Software Engineering Conference (APSEC)

Recent reports reveal that majority of the attacks to Web applications are input manipulation attacks. Among these attacks, SQL injection attack malicious input is submitted to manipulate the database in a way that was unintended by the applications' developers is one such attack. This paper proposes an approach for assisting to code verification process on the defense against SQL injection. The approach...

chapter

Detection of Buffer Overflow Vulnerabilities in C/C++ with Pattern Based Limited Symbolic Evaluation

Sun Ding, Hee Beng Kuan Tan, Kaiping Liu, Mahinthan Chandramohan, more

2012 IEEE 36th Annual Computer Software and Applications Conference Workshops > 559 - 564

2012 IEEE 36th IEEE Annual Computer Software and Applications Conference Workshops (COMPSACW)

Buffer overflow vulnerability is one of the major security threats for applications written in C/C++. Among the existing approaches for detecting buffer overflow vulnerability, though flow sensitive based approaches offer higher precision but they are limited by heavy overhead and the fact that many constraints are unsolvable. We propose a novel method to efficiently detect vulnerable buffer overflows...

chapter

Extraction of Attribute Dependency Graph from Database Applications

Kaiping Liu, Hee Beng Kuan Tan, Xu Chen

2011 18th Asia-Pacific Software Engineering Conference > 138 - 145

2011 18th Asia Pacific Software Engineering Conference

Database applications constitute a large portion of the software systems. This paper proposes a novel graph called attribute dependency graph to show the dependencies between attributes in a database application and also the programs involved. We propose an approach to automatically extract the attribute dependency graph through analyzing the source code of database applications. The extracted information...

article

Preparation and properties of unsaturated polyester nanocomposites based on silylated sepiolite nanofibers

Panfang Lu, Jing Xu, Kaiping Liu

Journal of Applied Polymer Science > 119 > 5 > 3043 - 3050

The novel surface‐modified sepiolite/unsaturated polyester (sepiolite/UP) nanocomposites were prepared by in situ polymerization. Sepiolite fibers were first organo‐modified by grafting of vinyltriethoxysilane (VTS) containing a double bond onto the surfaces and used as nanofillers. The morphology of sepiolites and nanocomposites were characterized by X‐ray diffraction (XRD), Fourier transform infrared...

chapter

Research on Text Classification Algorithm by Combining Statistical and Ontology Methods

Guoshi Wu, Kaiping Liu

2009 International Conference on Computational Intelligence and Software Engineering > 1 - 4

2009 International Conference on Computational Intelligence and Software Engineering

Traditional statistics based text classification methods almost construct their characteristic vectors with some key terms, and they consider terms are independent of each other and there are no semantic relations among them. However, in the real world, words used to have semantic relationships, such as synonym, hyponymy and so on. Therefore, classification methods based on statistics do not conform...

chapter

Low temperature growth of ZnO rods by EDTA-assisted hydrothermal synthesis

Guangmei Zhai, Hua Gong, Minqiang Wang, Zhonghai Lin, more

2009 4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems > 1088 - 1091

2009 4th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS 2009)

One-dimensional ZnO rods about 40 mum long are prepared by low temperature disodium ethylene diamine tetraacetate (EDTA)-assisted hydrothermal method. The prepared ZnO crystals are characterized by X-ray power diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). It is found that EDTA plays an important role to crystal habit of ZnO crystal and ZnO rods...

article

Preparation of mercaptoacetic acid-capped ZnSe core–shell nanocrystals by hydrothermal method

Hua Gong, Zhonghai Lin, Guangmei Zhai, Kaiping Liu, more

Ceramics International > 2008 > 34 > 4 > 1085-1087

Mercaptoacetic acid (MMA)-capped ZnSe (ZnSe–MMA) core–shell nanocrystals have been prepared by two-step hydrothermal method using Se and Zn(NO ₃ ) ₂ aqueous solution as precursor. The as-prepared ZnSe are zincblende structure with grain size of 4nm. The MMA-capped ZnSe nanocrystals are more stable and can be preserved long time without oxidation in the air. The ZnSe–MMA core–shell...

article

Characterization and growth mechanism of ZnSe microspheres prepared by hydrothermal synthesis

Hua Gong, Hui Huang, Minqiang Wang, Kaiping Liu

Ceramics International > 2007 > 33 > 7 > 1381-1384

ZnSe microspheres have been prepared in NaOH aqueous solution at 150°C for 24h by hydrothermal synthesis using Zn and Se as source materials. Effect of Zn/Se on the morphologies of ZnSe was studied. High ratio of Zn/Se was critical to prepare ZnSe microspheres and only tiny ZnSe grains were derived when Zn/Se was less than 2. The ZnSe microspheres were formed by the attached growth of ZnSe nuclei...

article

Characterization and optical properties of ZnSe prepared by hydrothermal method

Hua Gong, Hui Huang, Liang Ding, Minqiang Wang, more

Journal of Crystal Growth > 2006 > 288 > 1 > 96-99

ZnSe powders were prepared at 125–200°C by hydrothermal method using Zn and Se as source materials. The powders were cubic zinc blende structure ZnSe, and some ZnSeO ₄ ·H ₂ O found in ZnSe prepared at 125 and 150°C due to insufficient reducing atmosphere at low hydrothermal temperature. High hydrothermal temperature was helpful to completely consume the source materials and to synthesize...

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