Simulation Studies of Gigabit Ethernet Versus Myrinet Using Real Application Cores

Author(s):  
Helen Chen ◽  
Pete Wyckoff
1999 ◽  
Vol 15 (2) ◽  
pp. 91-98 ◽  
Author(s):  
Lutz F. Hornke

Summary: Item parameters for several hundreds of items were estimated based on empirical data from several thousands of subjects. The logistic one-parameter (1PL) and two-parameter (2PL) model estimates were evaluated. However, model fit showed that only a subset of items complied sufficiently, so that the remaining ones were assembled in well-fitting item banks. In several simulation studies 5000 simulated responses were generated in accordance with a computerized adaptive test procedure along with person parameters. A general reliability of .80 or a standard error of measurement of .44 was used as a stopping rule to end CAT testing. We also recorded how often each item was used by all simulees. Person-parameter estimates based on CAT correlated higher than .90 with true values simulated. For all 1PL fitting item banks most simulees used more than 20 items but less than 30 items to reach the pre-set level of measurement error. However, testing based on item banks that complied to the 2PL revealed that, on average, only 10 items were sufficient to end testing at the same measurement error level. Both clearly demonstrate the precision and economy of computerized adaptive testing. Empirical evaluations from everyday uses will show whether these trends will hold up in practice. If so, CAT will become possible and reasonable with some 150 well-calibrated 2PL items.


Author(s):  
Vinodhini M.

The objective of this paper is to develop a Direct Model Reference Adaptive Control (DMRAC) algorithm for a MIMO process by extending the MIT rule adopted for a SISO system. The controller thus developed is implemented on Laboratory interacting coupled tank process through simulation. This can be regarded as the relevant process control in petrol and chemical industries. These industries involve controlling the liquid level and the flow rate in the presence of nonlinearity and disturbance which justifies the use of adaptive techniques such as DMRAC control scheme. For this purpose, mathematical models are obtained for each of the input-output combinations using white box approach and the respective controllers are developed. A detailed analysis on the performance of the chosen process with these controllers is carried out. Simulation studies reveal the effectiveness of proposed controller for multivariable process that exhibits nonlinear behaviour.


2018 ◽  
Vol 28 (2) ◽  
pp. 663-669
Author(s):  
Hristina Milcheva ◽  
Pavlina Teneva ◽  
Katya Mollova ◽  
Albena Andonova

Achieving the desired high quality of student education is a major goal and task of the higher medical schools. Training is a very factual process involving not only learning and material facilities, but also teaching staff and motivated students. The main objective in the preparation of healthcare students is the quality practical training that modern higher education has to provide. No less important is the student's opinion on the methods and tools used in their training. For this reason, the younger generation sets its requirements in its formation as a medical specialist. The modern lecturer must skillfully pass on knowledge so that a transfer of competences from theory to practice can be successfully accomplished. The purpose: Establish the students' opinion on the quality of the learning process, allowing an effective transfer of competences from theory to practice. Materials and Methods: The analyzes in this report are from an anonymous questionnaire conducted among 145 students from the Thracian University from the professional field "Health Care" - first, second and third courses specialty "Rehabilitator therapist", "Medical Laboratory assistant", "Geriatric Care" and " Nursing "during the summer semester of the school year 2017/18. MSExcel and StatGrafics were used to process the data. Results and Discussion: To achieve effective training, it is imperative for lectures to maintain a high level of competence and constantly get acquainted with developments in medical science. Students highly appreciate as the most important qualities of the teacher's ability to maintain the interest of students "; "Attitude towards students" and its "competence". A significant percentage of those surveyed believe that the theory, in theory, finds real application in practice. A significant percentage of those surveyed believe that the theory, to practice, finds real application in practice. The transfer of knowledge from theory to practice is a two-way information process between lecturers and students of scientific knowledge and practical skills. Finally, we can point out that the transfer of competence from theory to practice is a process influenced by a number of factors such as: the professional competencies of the academic lecturer and the clinical tutor; better collaboration between the higher medical school and the clinical base; organization of training. Maintaining the interest of the students in acquiring the medical profession is an important prerequisite for their subsequent successful realization.


1986 ◽  
Author(s):  
Ernest Bauer ◽  
Frank A. Albini ◽  
Craig Chandler
Keyword(s):  

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