Problems such as inconsistent or erroneous instrumentation often plague applications whose source code is manually instrumented during the implementation phase. Integrating performance instrumentation capabilities into the Model Driven Software Development (MDSD) process would greatly assist software engineers who do not have detailed knowledge of source code instrumentation technologies. This ...

Program coverage is an important software quality metric. Coverage is most commonly gathered in the testing lab during development. However, developers also sometimes use inexpensive forms of program coverage in production software. In the post-deployment scenario, users often place very strict requirements on tracing overheads and legal instrumentation strategies. This work deals specifically ...

The use of threads is becoming commonplace in both sequential and parallel programs. This paper describes our design and initial experience with non-trace based performance instrumentation techniques for threaded programs. Our goal is to provide detailed performance data while maintaining control of instrumentation costs. We have extended Paradyn’s dynamic instrumentation (which can instrument ...

Study Design Systematic review. Clinical Questions (1) What is the comparative efficacy of unilateral instrumentation compared with bilateral instrumentation in spine surgery? (2) What is the safety of unilateral instrumentation compared with bilateral instrumentation in spine surgery? Methods Electronic databases and reference lists of key articles were searched up to September 30, 2014, to id...

PURPOSE To compare stability after anterior instrumentation alone versus modified combined anterior and posterior instrumentation for burst fractures of the thoracolumbar spine in calves. METHODS Thoracolumbar spines of 10 calves were used. An axial compression force was applied on each specimen using a material-testing machine, until there was a burst fracture at T12 or L1. Five specimens we...

chromatography (UHPLC) has taken a firm foothold in the analytical laboratory. However, it is rare that 100% of instrumentation within a company is all from the same vendor and of the same model. Differences between equipment can lead to unexpected changes in the chromatogram when a method is transferred from one system to another. In this issue of Separation Science we examine these issues and...

abstract background totally implantable central venous access devices (ports) have been available for over 10 years, but have not been achieved widespread use in pediatric oncology patients. ports facilitate the administration of chemotherapy in children with cancer. materials and methods in this study, early complications of implantable central venous access devices in children with different ...