نتایج جستجو برای: شاخصهای sepiو spi

تعداد نتایج: 8305  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Víctor H Bustamante Luary C Martínez Francisco J Santana Leigh A Knodler Olivia Steele-Mortimer José L Puente

The acquisition of new genetic traits by horizontal gene transfer and their incorporation into preexisting regulatory networks have been essential events in the evolution of bacterial pathogens. An example of successful assimilation of virulence traits is Salmonella enterica, which acquired, at distinct evolutionary times, Salmonella pathogenicity island 1 (SPI-1), required for efficient invasi...

Journal: :Stroke 2000
W N Kernan C M Viscoli L M Brass R W Makuch P M Sarrel R S Roberts M Gent P Rothwell R L Sacco R C Liu B Boden-Albala R I Horwitz

BACKGROUND AND PURPOSE In 1991 we developed the Stroke Prognosis Instrument (SPI-I) to stratify patients with transient ischemic attack or ischemic stroke by prognosis for stroke or death in 2 years. In this article we validate and improve SPI-I (creating SPI-II). METHODS To validate SPI-I, we applied it to 4 test cohorts and calculated pooled outcome rates. To create SPI-II, we incorporated ...

Journal: :Software Process: Improvement and Practice 2002
Tracy Hall Austen Rainer Nathan Baddoo

In this paper we present survey data characterizing the implementation of SPI in 85 UK companies. We aim to provide SPI managers with more understanding of the critical success factors of implementing SPI. We present an analysis of the critical implementation factors identified in published case studies. We use a questionnaire to measure the use of these factors in ‘typical’ software companies....

2006
Mahmood Niazi David Wilson Didar Zowghi

In this paper we present findings from our empirical study of software process improvement (SPI) implementation. We aim to provide SPI practitioners with insight into designing appropriate SPI implementation initiatives in order to achieve better results. Thirty-four interviews were conducted with Australian practitioners. Three SPI implementation issues were investigated: reasons for embarking...

Journal: :Int J. Information Management 2006
Jakob H. Iversen Ojelanki K. Ngwenyama

Software process improvement (SPI) is a widely recognized approach that software companies implement to improve quality, productivity, and time-to-market. Assessing and analyzing performance improvements are important SPI activities. However, many SPI managers have found it difficult to develop and implement effective performance measurement programs for SPI, in part because guidelines for cond...

2013
Petter Øgland

When starting the software process improvement (SPI) journey, there are many SPI standards toselect from. Selecting good SPI standards can be a technical problem, from a software engineeringpoint of view, but it can also be a political problem, some standards fitting more with internal politicalagendas than others. As it is well-known that SPI without management commitment can have<...

2012
Jian Zhang Oxana P. Lazarenko Xianli Wu Yudong Tong Michael L. Blackburn Horatio Gomez-Acevedo Kartik Shankar Thomas M. Badger Martin J. J. Ronis Jin-Ran Chen

BACKGROUND Previous reports suggest that beneficial effects of soy on bone quality are due to the estrogenic actions of isoflavone phytochemicals associated with the protein. However, mechanistic studies comparing the effects of soy diet and estrogens on bone, particularly in rapidly growing animals are lacking. METHODOLOGY AND PRINCIPAL FINDINGS We studied the effects of short term feeding o...

Journal: :Information & Software Technology 2010
Mahmood Niazi Muhammad Ali Babar June M. Verner

Context: Software Process Improvement initiatives have been around for many years with the growing globalisation of software development is making them increasingly important. Objective: The objective of this exploratory research is to gain an in-depth understanding of barriers that can undermine SPI, in the context of Global Software Development, from the perspective of software development pr...

2009
Petter Øgland

When starting the software process improvement (SPI) journey, there are many SPI standards to select from. Selecting good SPI standards can be a technical problem, from a software engineering point of view, but it can also be a political problem, some standards fitting more with internal political agendas than others. As it is well-known that SPI without management commitment can have disastrou...

Journal: :Blood 2007
Pauline Rimmelé Olivier Kosmider Patrick Mayeux Françoise Moreau-Gachelin Christel Guillouf

Overexpression of the transcription factor Spi-1/PU.1 in mice leads to acute erythroleukemia characterized by a differentiation block at the proerythroblastic stage. In this study, we made use of a new cellular system allowing us to reach graded expression of Spi-1 in preleukemic cells to dissect mechanisms of Spi-1/ PU-1 in erythroleukemogenesis. This system is based on conditional production ...

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