A discrepancy exists between the emphasis posed by practitioners on decentralized and non-hierarchical communication in Free/Libre Open Source Software (FLOSS) communities and empirical evidence of their hierarchical structure. In order to explain this apparent paradox it is here hypothesized that in FLOSS communities local sub-groups exist and are less hierarchical, more decentralized than the...

It is important to measure the burden surface temperature of blast furnace (BF) since it can indicate the gas flow distribution and provide instruction for BF operation. The measuring system configuration based on multi-source information fusion is given in this paper to solve the problem of temperature filed measuring in BF. As a result, the multi-source information feature extraction and fusi...

Open Source Software (OSS) is an important asset in today’s software-intensive society. The success of OSS projects is highly dependent on a number of factors. These factors must be understood and managed as an OSS project progresses. Thus, project management of an OSS project has a decisive role in ensuring the success of its software. The objective of the research is to increase the understan...

An implementation of Automatic Sparsity Detection (ASD) as a new source-to-source transformation is presented. Given a code for evaluation of a function, ASD generates code to evaluate the sparsity pattern of the function’s Jacobian by operations on bit-vectors. Similar to Automatic Differentiation (AD), there are forward and reverse modes of ASD. As ASD code has significantly fewer required va...

Open Source Software (OSS) is an important asset in today's software-intensive society. The success of OSS projects is highly dependent on a number of factors. These factors must be understood and managed as an OSS project progresses. Thus, project management of an OSS project has a decisive role in ensuring the success of its software. The objective of the research is to increase the understan...

Runtime profiling of Web-based applications and services is an effective method to aid in the provisioning of required resources, for monitoring server-level objectives, and for detecting implementation defects. Unfortunately, it is difficult to obtain accurate profile data on live client workloads due to the high overhead of instrumentation. This paper describes a cloud-based profiling service...

There is general consensus that context can be a rich source of information about an object’s identity, location and scale. However, the issue of how to formalize contextual influences is still largely open. Here we introduce a simple probabilistic framework for modeling the relationship between context and object properties. We represent global context information in terms of the spatial layou...