Acquisition of software intensive systems demands significant work prior to establishing the contract. One of the significant challenges of precontract phase is acquisition planning. The activities such as estimation of required effort and determining proper structures for the acquisition project require unique approaches. In this study, experiences gained from two large innovative military app...

PURPOSE To correct gradient-induced phase errors in radial MRI. METHODS Gradient-induced eddy currents affect the MRI data acquisition by gradient delays and phase errors that may lead to severe image artifacts for non-Cartesian imaging scenarios such as radial trajectories. While gradient delays are dealt with by respective shifts of the acquisition window during radial image acquisition, th...

Introduction: The need to detect small brain lesions and to reduce partial volume effects in fiber tractography has made high resolution isotropic 3D diffusion-weighted imaging (DWI) a research focus in diffusion acquisition methodology [1-4]. To achieve reasonable scan time, most of the proposed 3D DWI methods used steady-state free precession (SSFP) acquisition [1-3] which has a complicated d...

dent learning by stating plainly: "The body of research on the impacts of the college academic experience is extensive. The strongest general conclusion [is that] the greater the student's involvement or engage ment in academic work or in the academic experience of college, the greater his or her level of knowledge acquisition and general cognitive development" (p. 616). This arti cle contribut...

This experimental study investigated the learners’ integrative acquisition of obligatory overt subjects and subject-verb clause agreement in English as an L2. In L1 acquisition research, correlations between superficially unrelated linguistic phenomena are analyzed in terms of integrative effects. For instance, in English L1 acquisition, there is evidence for an integrative appearance of subjec...

background it has been elucidated that berberis vulgaris (barberry) can alleviate morphine withdrawal syndrome. also it has been reported that aqueous extract of barberry possibly have inhibitory effect on nmda receptors. objectives in this study, we decided to evaluate the effects of aqueous extract of b. vulgaris fruit on morphine tendency in mice using conditioned place preference (cpp) meth...

In order to help the knowledge engineer and the expert during knowledge acquisition phase, the ACACIA Group is working on a knowledge acquisition methodology and tool (KATEMES) allowing knowledge acquisition from multiple experts, exploiting the specificities of design problems and preparing the assistance to the end-user and the quality of explanations he will be provided with. This paper desc...

epistemologically speaking, second language acquisition research (slar) might be reconsidered from a complex dynamical system view with interconnected aspects in the ecosystem of language acquisition. the present paper attempts to introduce the tenets of complex system theory and its application in slar. it has been suggested that the present dominant traditions in language acquisition research...

In this paper, static and dynamic behavior of a varactor of a micro-phase shifter under DC, step DC and AC voltages and effects of the residual stress on the phase diagram have been studied. By presenting a mathematical modeling, Galerkin-based step by step linearization method (SSLM) and Galerkin-based reduced order model have been used to solve the governing static and dynamic equations, resp...

This paper presents a learning-based approach to the automation of knowledge acquisition for expert systems. An expert system is viewed as an explicit model of a human expert's competence and performance. We distinguish three phases in the development of such a model. The first one consists of defining a framework for the model, in terms of a knowledge representation formalism and an associated...