STIFFENING ANALYSIS OF BUILDINGS ERECTED IN THE IMS SYSTEM

The bracing of buildings of the prefabricated and prestressed IMS skeleton system is provided by sway-to-shear and sway-to-bending structural members. An analysis of their contribution to the lateral stiffness is presented in this study. The adopted method is subjected to N.Rosman's theory. An illustrating numerical analysis reveals that a casual deficiency of the framework rigidity of the nodes due to decrease of prestressing effect can cause a remarkable redistribution in the loading conditions of the bracing diaphragms

INVESTIGATION OF ULTIMATE BEARING CAPACITY IN CASE OF AXIAL LOAD

According to the new design standard concerning reinforced concrete structures, the examination of the load bearing critical condition has to be undertaken for axial load by taking into consideration plastic material features. The critical condition of cross sections has to he calculated either by supposing the critical fracture compression of concrete or the critical rupture elongation of the drawn reinforcement. In case of compressed rods the eccen- tricity increments due to the material inhomogeneity, measurement faults as well as the deformation occurring till the critical condition, have to be considered

"...a legszebb énekű veréb...": Bodor Béla: Codex Rescriptus, Palimpszesztek könyve

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Solving Robust Glucose-Insulin Control by Dixon Resultant Computations

We present a symbolic approach towards solving the Bergman three-state minimal patient model of glucose metabolism. Our work first translates the Bergman three-state minimal patient model into the modified control algebraic Riccati equation. Next, the modified control algebraic Ricatti equation is reduced to a system of polynomial equations, and an optimal (minimal) solution of these polynomials is computed using Dixon resultants. We demonstrate the use of our method by reporting on three case studies over glucose metabolism

Toxikus elemek felvételének, mozgásának és átalakulásának vizsgálata nehézfémterheléses kísérletben = Examination of the uptake, movement and transformation of toxic elements in the heavy-metal-load experiment

Meghatároztuk a Nagyhörcsöki Nehézfém Terheléses Kísérlet növény- (kukorica, sárgarépa, borsó, őszi búza) és talajmintái (az As, Cd, Mo, Pb és Se elemekkel kezelt parcellák) elemtartalmát. Az analízishez multielemes analitikai módszert dolgoztunk ki Optima 3300 DV típusú ICP-OES készülékre. Megállapítottuk a multielemes mérési módszer paraméterei kompromisszumos optimális értékeit. Induktív csatolású plazma tömegspektrométert (ICP-MS) (Thermo Elemental gyártmányú X7 típusú ICP-MS berendezést) alkalmazva mérési módszert dolgoztunk ki a fenti 5 elem multielemes vizsgálatára. Vizsgáltuk a vízoldható C-tartalmú oldószerek hatását a különböző elemek ICP-MS-sel mért intenzitására, ezáltal nagymértékben csökkentettük a mérés során felmerülő hiba nagyságát. Mérési módszert dolgoztunk ki (és alkalmaztuk) szelén specieszek vizsgálatára IC-ICP-MS (ionkromatográf-induktív csatolású plazma tömegspektrométer) csatolást alkalmazva. | The element contents of different plants (wheat, carrot, peas, wheat) and soil samples (plots treated with As, Cd, Mo, Pb and Se elements) were determined from Nagyhörcsök Experimental Station Heavy Metal Load Experiment. For analysis a multielement analytical method was elaborated using an Optima 3300 DV type Perkin-Elmer ICP-OES instrument and the compromised values of the parameters also were determined. A multielement analytical method was elaborated applying an inductively coupled plasma mass spectrometer (ICP-MS) (X7 type Thermo Elemental ICP-MS instrument) for analyses of As, Cd, Mo, Pb and Se elements. The effect of different water soluble solvents (carbon content) were determined on changes of intensity (concentration) of the above 5 elements (As, Cd, Mo, Pb, Se) using ICP-MS instrument, so we could decrease the magnitude of error of analysis. A speciation analytical method was elaborated applying an ionchromatograph inductively coupled plasma mass spectrometer (IC-ICP-MS) coupled system for analysis of selenium species

APPLICATION OF COMPUTER ALGEBRA FOR GLUCOSE-INSULIN CONTROL IN H2/Hinf SPACE USING MATHEMATICA

In this case study, an optimal control in H2/Hinf space is presented for glucose- insulin system of diabetic patients under intensive care. The analysis is based on a modified two-compartment Bergman model. To design the optimal controller, the disturbance rejection LQ method based on the minimax differential game is applied. The critical, minimax value of the scaling parameter γcrit is determined by symbolic solution of the modified Riccati equation. The numeric evaluation of the symbolic computation for γ > γ crit leads to two different solutions, but the norms of the vectors λ1, λ2 formed by the eigenvalues of the pair of the gain matrices are the same. The numerical results are in good agreement with that of the μ-Toolbox of MATLAB. One of the gain matrices with increasing γ , approaches the gain matrix computed with the traditional LQ optimal control design. The symbolic and numerical computations were carried out with \textitMathematica 5, and with the CSPS Application 2 as well as with MATLAB 6.5

Evaluation of elements uptake in soil and different plants

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