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The value of a software product diminishes due to emerging new requirements and gradual changes in system usage patterns over its lifespan, including other direct or indirect impacts from the surrounding environment. Often new requirements or changes cannot be addressed instantly; therefore, the system becomes less effective with incompatible or unused features, gradually degrading the overall value...
Spreadsheets often contain faults that are difficult to localize. Spectrum-based Fault Localization (SFL) assists users in the fault localization process by ranking cells by their suspiciousness to contain a fault. Since the ranking of the basic SFL approach is often imprecise, we propose three techniques to improve it, i.e., dynamic cones, grouping, and tie-breaking. We evaluate these techniques...
Defect prediction models help software organizations to anticipate where defects will appear in the future. When training a defect prediction model, historical defect data is often mined from a Version Control System (VCS, e.g., Subversion), which records software changes at the file-level. Software metrics, on the other hand, are often calculated at the class- or method-level (e.g., McCabe's Cyclomatic...
In order to effectively control the risk of software project and overcome the effect of lack data and human subjective factors in the traditional evaluation, the transformation of quantification and reduction of natural language is realized, so a new evaluation model is put forward. Based on the concepts of risk weight, expert trust, risk consequence and so on, we use the correlation coefficient to...
Scientific and accurate cultivated quality grade results are an important guarantee for applications. However, the phenomenon of abnormal cultivated land quality is always occurred due to the error of investigation or computation, so exploring effective method to inspect abnormal data of the grade results is an important problem to be solved. Cultivated land quality grade results of Wuhan Hannan district...
Software misconfigurations are responsible for a substantial part of today's system failures, causing about one-quarter of all customer-reported issues. Identifying their root causes can be costly in terms of time and human resources. We present an approach to automatically pinpoint such defects without error reproduction. It uses static analysis to infer the correlation degree between each configuration...
Software bugs contribute to the cost of ownership for consumers in a software-driven society and can potentially lead to devastating failures. Software testing, including functional testing and structural testing, remains a common method for uncovering faults and assessing dependability of software systems. To enhance testing effectiveness, the developed artifacts (requirements, code) must be designed...
This paper focused on the petroleum engineering services and the data of path and regression analysis from users of each drilling engineering company were calculated by the partial least squares method. Based on the whole comparison, This paper has achieved the evaluation of the existing user satisfaction evaluation system of drilling engineering services, and mainly illustrates key factors and effects...
Through taking the county level as the unit, per capita GDP, net income of the rural households and disposable income of urban residents as the evaluation indexes, and 42 counties in Yunnan central urban agglomeration as the research objects, the spatial-temporal pattern difference of Yunnan central urban agglomeration's economy from 2002 to 2011 is studied in this paper based on Geoda and ArcGIS...
In order to evaluate balancing ability in each direction more objectively and analyze the correlations between balance ability and human basic information such as gender, height and weight, the complete dynamics model of balance process under external excitation was simplified as two order linear system reasonably in this study. The evaluation system based on visual stimulation was built to provide...
Heterogeneity and stability of the agricultural landscape is the premise to maintain the stability and high-efficient of agricultural ecosystem. Disturbance regimes have been recognized as the causes of the landscape heterogeneity. In this paper, the Fengqiu County, a typical agricultural region in the lower reaches of the Yellow River plains, was selected as the study area. Based on the TM imagery...
The interface design of software used on Home Appliances targeted at satisfying passenger's physiology and psychological needs when operating the machine to the maximum extent is a complicated synthetic topic which embracing ergonomics, visual communication design, user experience design, behavior psychology, cultural studies of the consumer, optics and Chromatics and so on. So, it is very difficult...
A popular approach to assessing software maintainability and predicting its evolution involves collecting and analyzing software metrics. However, metrics are usually defined on a micro-level (method, class, package), and should therefore be aggregated in order to provide insights in the evolution at the macro-level (system). In addition to traditional aggregation techniques such as the mean, median,...
According to the diversity of software development risk, the complication of evaluation indexes and the comprehensive evaluation hardly with the present evaluation method, the software development risk was divided into three grade indexes. 13 risk evaluation indexes were constructed based on the different stage of real situation in the course of software development. Based on the grey decision-making...
The software GPS receiver puts forward higher request for sensitivity and real-time processing. Due to a great quantity of complex calculations in the baseband operations, it consumes too much time to achieve real-time goal. In this paper, we propose an optimized method utilizing the DSP module as a support tool, converting most of the float calculations into integer calculations and reducing part...
In order to make a quantitative analysis on spatial pattern of headquarters about top 500 enterprises of Chinese service industries, the software of ArcGIS 9.2 was adopted. The results showed that the headquarters were mainly distributed in the eastern coast region of China. The value of global Moran's I was about 0.11. High value regions were all distributed in the eastern coast region of China and...
Chemical processes with multiloop control configurations have significant amount of control loop interactions due to tight mass and heat integration. Change in set point and/or controller parameters of one control loop may also affect the variables of other loops. The presence of loop interactions in a process plant can cause significant cost, quality and production losses of the plant. It is challenging...
In order to evaluate competitiveness of virtual logistics enterprises in the process of logistics partner selection, establishing a scientific and suitable evaluation index system is the key step. This paper uses structural equation model (SEM), through an example, demonstrates the amending and optimized process for evaluation index system. Firstly an evaluation index system of competitiveness of...
Leaf color has been commonly used as an index for crop stress status diagnosis. We have developed a low-cost and non-destructive method that is easy to use to assess the health status of plants, based on the estimation of chlorophyll content of leaves using a portable digital camera. Relationships between chlorophyll content and leaf image color indices in the RGB and Lab* space with the comparison...
This thesis puts forward 11 main influence factors which may have impact on the informatization construction by identifying the internal and external influence factors. And this paper processes the surveyed data of 12 enterprises in northeast area based on grey relational analysis according to the gray character of Enterprise's cognitive to some of the influence factors, and it calculates the correlation...
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