422 research outputs found
Red Blood Cell Transfusion and Functional Dose
Objective:The objective is to study the relationship between cell age and function in the process of the red blood cell (RBC) normal metabolism and investigate the functional changes of red blood cells in the preservation process
Finite Volume Numerical Analysis of the Thermal Property of Cellular Concrete Based on Two and Three Dimensional X-ray Computerized Tomography Images
Cellular concrete is one kind of lightweight concrete, which are widely used in thermal insulation engineering project. In this study, a three dimensional (2D and 3D) finite-volume-based models was developed for analyzing the heat transfer mechanisms through the porous structures of cellular concretes under steady-state heat transfer condition and also for investigating the differences between 2D and 3D modeling results. 2D and 3D reconstructed pore networks were generated from the microstructural information measured by a 3D image captured by X-ray computerized tomography (X-CT). In addition, the 3D-computed value of the effective thermal conductivity was found to be in better agreement with the measured value, in comparison with that computed on the basis of 2D cross-sectional images. Finally, the thermal conductivity computed for different porous 3D networks of cellular concretes were compared with those obtained from 2D computations, revealing the differences between 2D and 3D image-based modeling: a correlation was thus derived between the results computed with 3D and 2D models
Detect Related Bugs from Source Code Using Bug Information
Open source projects often maintain open bug repositories during development
and maintenance, and the reporters often point out straightly or implicitly the
reasons why bugs occur when they submit them. The comments about a bug are very
valuable for developers to locate and fix the bug. Meanwhile, it is very common
in large software for programmers to override or overload some methods
according to the same logic. If one method causes a bug, it is obvious that
other overridden or overloaded methods maybe cause related or similar bugs. In
this paper, we propose and implement a tool Rebug- Detector, which detects
related bugs using bug information and code features. Firstly, it extracts bug
features from bug information in bug repositories; secondly, it locates bug
methods from source code, and then extracts code features of bug methods;
thirdly, it calculates similarities between each overridden or overloaded
method and bug methods; lastly, it determines which method maybe causes
potential related or similar bugs. We evaluate Rebug-Detector on an open source
project: Apache Lucene-Java. Our tool totally detects 61 related bugs,
including 21 real bugs and 10 suspected bugs, and it costs us about 15.5
minutes. The results show that bug features and code features extracted by our
tool are useful to find real bugs in existing projects.Comment: 10 pages, 5 figures, 4 tables conference; 2010 IEEE 34th Annual
Computer Software and Applications Conferenc
- …