A5103169298- Optimization and Search Problems
- Complex Network Analysis Techniques
- Intracranial Aneurysms: Treatment and Complications
- Advanced Bandit Algorithms Research
- Cerebrospinal fluid and hydrocephalus
- Machine Learning and Algorithms
- Online Learning and Analytics
- Cerebrovascular and Carotid Artery Diseases
- Medical Imaging Techniques and Applications
- Algorithms and Data Compression
- Scheduling and Optimization Algorithms
- Tracheal and airway disorders
- Robotics and Automated Systems
- Data Visualization and Analytics
- Educational Technology and Assessment
- Nonlinear Optical Materials Research
- Traumatic Ocular and Foreign Body Injuries
- Congenital Heart Disease Studies
- Business Law and Ethics
- Moyamoya disease diagnosis and treatment
- Pulmonary Hypertension Research and Treatments
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Vascular Malformations Diagnosis and Treatment
- Vascular Procedures and Complications
- Intracerebral and Subarachnoid Hemorrhage Research
University of Szeged
2009-2024
Eötvös Loránd University
2020
Budapest University of Economics and Business
2019
Institute of Informatics of the Slovak Academy of Sciences
2013-2014
Gál Ferenc Főiskola
2007
University of Utah
1993-1997
Hungarian Academy of Sciences
1966
Institute for Technical Physics and Materials Science
1966
In this study, using the network approach, we analyzed urban public transportation systems of 5 Hungarian cities. We performed a comprehensive analysis with main goal identifying significant similarities and differences networks these Although previous studies often investigated unweighted networks, one novelty our study is to consider directed weighted links, where weights represent capacities vehicles (bus, tram, trolleybus) in morning peak hours. particular, calculated descriptors global...
Variable‐size (dynamic) smoothing operator constraints are applied in crosswell traveltime tomography to reconstruct both the smooth‐ and fine‐scale details of tomogram. In mixed underdetermined problems a large number iterations may be necessary introduce slowly varying slowness features into To speed up convergence, dynamic applies adaptive regularization prediction error function with help model covariance matrix. By so doing, term has larger weight at initial dominates final small...
The structural features of four benzylidene type Schiff bases [(E)-benzaldehyde-N-phenyl imine, (A) (E)-2-hydroxybenzaldehyde-N-phenyl imine (B) (E)-benzaldehyde-N-2-hydroxyphenyl (C) (E)-2-hydroxybenzaldehyde-N-2-hydroxyphenyl (D)] were studied by FT-IR spectroscopy in solution, photoacoustic and Raman spectroscopies the solid state quantum chemical calculations. It was found that molecule D dimerised with concomitant loss aromaticity ring. Beside intermolecular CO⋯HO hydrogen bonds,...
A higher rate of embolization is considered a disadvantage carotid stenting (CAS), when compared with endarterectomy. Plaques in the aortic arch (AA) and common artery (CCA) may be additional sources to stented internal plaques during CAS. In this study, we aimed investigate relationship between these intracerebral embolization.We analyzed occurrence composition AA CCA by computed tomography angiography (CTA) 101 consecutive cases Cases peri-procedural were detected on diffusion-weighted...
In this study, we discuss the possible application of ubiquitous complex network approach for information extraction from educational data. Since a huge amount data (which is detailed as well) produced by administration systems institutes, instead classical statistical methods, new types processing techniques are required to handle it. We define several suitable representations students, teachers and subjects in public education present some ways how graph mining can be used get about them....
In this paper a novel ranking method which may be useful in sports like tennis, table tennis or American football, etc. is introduced and analyzed. order to rank the players teams, time-dependent PageRank based applied on directed weighted graph representing game results sport competition. The was examined of competition enthusiastic sport-loving researchers Institute Informatics at University Szeged. our were compared by several popular techniques. We observed that approach works well...
In this paper, we define a modified PageRank algorithm as data mining technique with the aim of evaluating achievements students and generate ranking between them. We applied our method to set complex administrational system that contains numerous well detailed several schools in public education. order can be applied, constructed directed, weighted network students, where edges represent comparability an appropriate way. compared results standard statistical techniques are used for rating...
Background We report a case of bilateral malignant otitis externa complicated with petrous internal carotid artery pseudoaneurysms and their successful treatment flow diverter. Case A 68-year-old woman serious complications type II diabetes mellitus had on the right side. She was treated combined antibiotic therapy underwent mastoidectomy for mastoiditis. presented at our hospital acute hemorrhage from external auditory canal. The emergency computed tomography (CT) angiography revealed...
The purpose of the study is to describe carotid artery stenting (CAS) via distal transradial access (dTRA) facilitated by additional superficial temporal (STA) access, in a patient with complex aortic arch vessel anatomy.A 72-year-old woman prior history cervical surgery and radiotherapy due laryngeal malignancy, presented symptomatic 90% stenosis left internal (ICA). Due high lesion, was rejected from endarterectomy. Angiography demonstrated ICA type III arch. After failure common (CCA)...
In multiprocessor scheduling with rejection the jobs are characterized by a processing time and penalty it is possible to reject jobs. The goal minimize makespan of schedule for accepted plus sum penalties rejected this paper we present new online algorithm problem. Our parameter learning extension total algorithm. efficiency investigated an experimental analysis.
In the communication aspect of a computer network, data are sent by packets. If channel is not completely safe, then arrival packets must be acknowledged. data-acknowledgment problem, goal to determine time sending acknowledgments. Here we present new online algorithm for it, where itself parameter-learning extension alarming algorithms. The efficiency investigated testing it experimentally, and demonstrated that performs significantly better than original one.
In the communication aspect of a computer network, data is sent by packets. If channel not completely safe, then arrival packets must be acknowledged. acknowledgment problem goal to determine time sending acknowledgments. Here we study lookahead online algorithms, where at t algorithm knows arriving till t+c. We present new which based on idea learning optimal value parameter. The efficiency algorithms investigated testing them experimentally, and it demonstrated that parameter performs...
Bevezetés: Megfigyelések szerint az aneurysmaeredetű subarachnoidealis vérzés után még a látszólag teljesen felépült betegek is gyakran komoly pszichés problémákról számolnak be (szorongás, lehangoltság, hangulatingadozás, koncentrációképesség-csökkenés, memóriazavar). Célkitűzés: Célunk az, hogy egy megvalósíthatósági tanulmány keretein belül felmérjük rendelkezésre álló, alkalmazott pszichológiai tesztek hatékonyságát vérzésen átesett állapotának felmérése során, és ezzel együtt megkezdjük...
Abstract This paper proposes and evaluates solutions for an online clustering problem gives a mathematical model it. The at hand occurs often in the fusion of data streams example real time locating systems. goal is to gather as much incoming information from several sources possible but also minimize delay before next processing step can be executed. key characteristic that available bursty fashion, special case RTLS according cycles. After introduction background general given, then two...
We describe a case of patient with severe subarachnoid hemorrhage from the rupture difficult-to-treat morphology, suspected partially thrombosed anterior communicating artery aneurysm. The was admitted World Federation Neurosurgeons (WFNS) score 4 and Fisher grade IV hemorrhage. Angiography demonstrated wide neck aneurysm not suitable for standard coiling surgical treatment. On 10th day after bleeding, endovascular treatment performed to exclude circulation by implanting flow diverters A2 A1...
Bevezetés: A szegedi Idegsebészeti Klinikán 2019 novemberében robotkarral működő angiográfiás készülékkel ellátott hibrid műtő kezdte meg működését. Célkitűzés: Több mint egyéves tevékenységének eredményeiről és tapasztalataink alapján a idegsebészetben történő alkalmazásának előnyeiről számolunk be. Módszer: 2019. 11. 15. 2021. 03. 01. között összesen 576 műtétből 332 neurointervenciós 244 koponya- gerincműtét történt. Siemens ARTIS pheno ® készüléket használva történt műtőben csak...
While it is a widespread belief in Hungary that higher educational institutions are still efficient with the traditional (so-called frontal teaching) approach, more and voices heard supporting blended learning merely online learning.Budapest Business School (BGE), for many years now, has been favouring latter one thoroughly exploits its benefits during both in-house international programmes conducted within cooperations.The aim of this paper to synthesize challenges BBS faced designing...
Abstract In this study, a mathematical model is presented for an online data clustering problem. Data plays important role in many applications like handling the acknowledgment problem and stream management real-time locating systems. The inputs these problems are sequences, each containing several elements. Each element has arrival time weight that reflects its importance. times not known advance, some elements never arrive. Hence system should decide which moment optimal forwarding...