4 research outputs found
Magyar Siketnéma-Oktatás 08 (1906) 04
A SiketnĂ©ma-IntĂ©zeti Tanárok Országos EgyesĂĽletĂ©nek hivatalos lapja 8. Ă©vfolyam, 4. szám KecskemĂ©t, 1906. április 1. ElĹ‘zmĂ©nye a "Szemle a siketnĂ©mák, vakok, hĂĽlyĂ©k, gyengeelmĂ©jűek, dadogĂłk Ă©s hebegĹ‘k oktatásával foglalkozĂłk szakközlönye". A lap a 26. Ă©vfolyam 6. számátĂłl (1924) "SiketnĂ©mák Ă©s vakok oktatásĂĽgye a SiketnĂ©mák Ă©s Vakok Tanárai Országos EgyesĂĽletĂ©nek hivatalos lapja" cĂm alatt jelent meg
Numerikus modellezés és szimuláció az anyagtudományban és az anyagtechnológiákban = Numerical Modelling and Simulation in material Sciences and Materials Processing Technologies
VĂ©geselemes modellezĂ©ssel elemeztĂĽk a technolĂłgiai folyamatok során lejátszĂłdĂł anyagszerkezeti, mechanikai Ă©s termikus folyamatok egyĂĽttes hatását. Matematikai modellt dolgoztunk ki egyedi Ă©s átlapolĂłdĂł nyomvonalak alkalmazásával a hĹ‘eloszlás vĂ©geselemes modellezĂ©sĂ©re lĂ©zeres felĂĽletedzĂ©s Ă©s felĂĽletátolvasztás esetĂ©re, a hĹ‘hatás okozta anyagszerkezeti változások, a kemĂ©nysĂ©g- Ă©s feszĂĽltsĂ©g-eloszlás meghatározására. Folyamatos hűtĂ©sű C-görbĂ©k alkalmazásán alapulĂł számĂtĂłgĂ©pes hĹ‘kezelĂ©s technolĂłgiai tervezĹ‘rendszert dolgoztunk ki, acĂ©lok edzĂ©si, megeresztĂ©si, normalizálási Ă©s lágyĂtási technolĂłgiáinak elemzĂ©sĂ©re, műveleti utasĂtások kĂ©szĂtĂ©sĂ©re, termokĂ©miai eljárások Ă©s a betĂ©tedzĂ©s technolĂłgiájának tervezĂ©sĂ©re. Numerikus modellezĂ©si eljárást fejlesztettĂĽnk ki sajtolĂłhegesztĂ©si eljárások optimalizálására. VĂ©konylemezek ponthegesztett kötĂ©seinek optimalizálása tĂ©makörben PhD doktori Ă©rtekezĂ©s kĂ©szĂĽlt. SzámĂtĂłgĂ©pes tanácsadĂł rendszert dolgoztunk ki kĂĽlönfĂ©le hegesztĂ©si eljárások technolĂłgiai paramĂ©tereinek meghatározására, a hegesztĂ©s elĹ‘Ărt dokumentumainak számĂtĂłgĂ©pes elkĂ©szĂtĂ©sĂ©re. LemezalakĂtĂł eljárások numerikus modellezĂ©sĂ©vel elemeztĂĽk a technolĂłgiai Ă©s szerszámparamĂ©terek hatását. A hĂşzĂłbordás mĂ©lyhĂşzás numerikus modellezĂ©se tĂ©makörben PhD doktori Ă©rtekezĂ©s kĂ©szĂĽlt. Sorozatszerszámban vĂ©gezhetĹ‘ lemezalakĂtĂł eljárások technolĂłgiai Ă©s szerszámtervezĂ©sĂ©re alkalmas rendszert dolgoztunk ki általános rendeltetĂ©sű CAD rendszerre Ă©pĂtve. | The complex structural, mechanical and thermal effects in various technological processes were analysed using FEM. Mathematical model has been elaborated for single and overlapped tracks to determine the temperature distribution, phase transformations, hardness and stress distribution during laser surface hardening and surface melting. Based on the CCT-diagrams, a computer aided technological design program was elaborated for heat-treatment processes, suitable to analyse hardening, case hardening, tempering, normalising and annealing of structural and tool steels, and to design various thermo-chemical heat-treatment processes. Numerical modelling procedure has been elaborated for optimising pressure welding processes. For optimisation of spot-welding processes of thin sheets PhD Thesis was defended. Computer Aided Expert System was elaborated to design various welding processes determining the decisive technological parameters, and preparing the necessary welding specifications (WPS). Applying numerical modelling, the effect of technological and die parameters on various sheet metal forming processes were analysed with particular emphasis on forming of car body panels with deep-drawing. A PhD Thesis was defended on the investigation of deep-drawing processes applying drawbeads. Based on the Unigraphics CAD system, a computer aided technological and die-design system for sheet metal forming processes performed in progressive dies has been elaborated
Variation in neurosurgical management of traumatic brain injury
Background: Neurosurgical management of traumatic brain injury (TBI) is challenging, with only low-quality evidence. We aimed to explore differences in neurosurgical strategies for TBI across Europe. Methods: A survey was sent to 68 centers participating in the Collaborative European Neurotrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study. The questionnaire contained 21 questions, including the decision when to operate (or not) on traumatic acute subdural hematoma (ASDH) and intracerebral hematoma (ICH), and when to perform a decompressive craniectomy (DC) in raised intracranial pressure (ICP). Results: The survey was completed by 68 centers (100%). On average, 10 neurosurgeons work in each trauma center. In all centers, a neurosurgeon was available within 30Â min. Forty percent of responders reported a thickness or volume threshold for evacuation of an ASDH. Most responders (78%) decide on a primary DC in evacuating an ASDH during the operation, when swelling is present. For ICH, 3% would perform an evacuation directly to prevent secondary deterioration and 66% only in case of clinical deterioration. Most respondents (91%) reported to consider a DC for refractory high ICP. The reported cut-off ICP for DC in refractory high ICP, however, differed: 60% uses 25Â mmHg, 18% 30Â mmHg, and 17% 20Â mmHg. Treatment strategies varied substantially between regions, specifically for the threshold for ASDH surgery and DC for refractory raised ICP. Also within center variation was present: 31% reported variation within the hospital for inserting an ICP monitor and 43% for evacuating mass lesions. Conclusion: Despite a homogeneous organization, considerable practice variation exists of neurosurgical strategies for TBI in Europe. These results provide an incentive for comparative effectiveness research to determine elements of effective neurosurgical care