This paper explores differences and similarities between novice and expert users of interactive artifacts. In order to achieve this, protocol analysis was used to identify users’ cognitive categories, knowledge categories and knowledge representation. This research is based on the premises that knowledge — domain-specific knowledge in particular — plays a significant role in distinguishing a no...

contextual interference is defined as interference in performance and learning that arise from practicing one task in the context of other tasks. transitional practice is a kind of practice sequence that starts out with trials of large blocks; then moves to smaller random blocks, and eventually finishes with complete randomization. the aim of this study was to investigate the effect of ‘transit...

In this study we present results of investigations of progesterone and estrogen receptors in most frequent, WHO grade I histological types of meningiomas (meningothelial, fibrous, and transitional) and in atypical--WHO grade II variant of these tumors. Samples from 64 tumors were examined. The cohort consisted of 46 WHO grade I (21 transitional, 13 fibrous and 12 meningothelial histologic varia...

The transitional Reynolds numbers for different patterns are available and a proposed transitional map is also provided in this paper. The transition of falling-films on flat tubes is studied in this work. Water and ethylene glycol are used as working fluids, for falling-film experiments conducted under adiabatic conditions, without an imposed vapor flow. The flow patterns are recorded using a ...

OBJECTIVES To test whether the position of lumbosacral dermatomes varies in the presence of transitional vertebrae. MATERIAL AND METHODS Fifty consecutive male patients were tested for thoracolumbar and lumbosacral transitional vertebrae by radiography and for the position of the dermatome gap between the lumbar dermatomes L1, L2, L3, and the sacral dermatomes S2 and S3. The dermatome gap was...

Transitional economies with large geographical areas (such as Brazil, Russia, India, and China) represent both a challenge and an opportunity for the creation of spatial data infrastructures (SDI). Setting up an SDI in transitional economies is critically dependent on the diffusion of geographical information systems technology in public and private institutions. We use Rogers’ diffusion of inn...

BACKGROUND To determine the association of human papillomavirus infection (HPV) and transitional cell carcinoma (TCC). METHODS Using polymerase chain reaction, fifty-nine bladder tissue specimens of patients with transitional cell carcinoma of bladder compared with 20 bladder samples of cases with non-neoplastic disorders. RESULTS Male to female ratio was similar in the two groups (50/9 vs....

Background: The relationship between lumbosacral transitional vertebrae and low back pain is not clear. This controversy has been quite intriguing and has been the stimulus for carrying out this present study. The aim of this study was to determine, by plain radiography, if there is a relationship between lumbosacral transitional vertebrae and low back pain. Material and methods: Five hundred l...

PURPOSE To compare the expression of survivin and its association with clinicopathological criteria in major types of urinary bladder carcinoma, specifically, transitional cell carcinoma with and without squamous differentiation and squamous cell carcinoma. MATERIALS AND METHODS Immunohistochemical staining for survivin and Ki67 was performed on paraffin-embedded sections of 104 carcinomas: 5...

Two numerical procedures in the Direct Simulation Monte Carlo method, applying particle flux conservation at inflow/outflow pressure boundaries, are developed to treat the two most important boundary conditions encountered in micromechanical and vacuum devices involving internal gaseous flows. The first one is for both specified pressures at inlet and exit; while the second one is for specified...