A5028484707- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Topic Modeling
- High-Energy Particle Collisions Research
- Natural Language Processing Techniques
- VLSI and Analog Circuit Testing
- Neutrino Physics Research
- Radiation Effects in Electronics
- Astrophysics and Cosmic Phenomena
- Cardiac Arrhythmias and Treatments
- Particle Accelerators and Free-Electron Lasers
- Cardiac pacing and defibrillation studies
- Distributed and Parallel Computing Systems
- Multimodal Machine Learning Applications
- Advanced Data Storage Technologies
- Semiconductor materials and devices
- Advanced Graph Neural Networks
- Atrial Fibrillation Management and Outcomes
- Domain Adaptation and Few-Shot Learning
- Radio Frequency Integrated Circuit Design
- Text and Document Classification Technologies
- Radiation Detection and Scintillator Technologies
- Superconducting Materials and Applications
- Integrated Circuits and Semiconductor Failure Analysis
G. Papanikolaou General Hospital
2023-2025
University of Amsterdam
2020-2024
Amsterdam University of the Arts
2022
University of Liverpool
2014
Imperial College London
2007-2010
European Organization for Nuclear Research
2007-2010
Ericsson (Sweden)
2008
University of Ioannina
2005-2007
Research Academic Computer Technology Institute
1999-2003
University of Patras
1999-2003
Atrial fibrillation (AF) is the most prevalent cardiac arrhythmia, associated with significant morbidity, mortality, and healthcare burden. Despite advances in AF management, challenges persist early detection, risk stratification, treatment optimization, necessitating innovative solutions. Artificial intelligence (AI) has emerged as a transformative tool care, leveraging machine learning deep algorithms to enhance diagnostic accuracy, improve prediction, guide therapeutic interventions....
The CMS preshower is a fine grain detector that comprises 4288 silicon sensors, each containing 32 strips. raw data are transferred from the to counting room via 1208 optical fibres. Each fibre carries 600-byte packet per event. maximum average level-1 trigger rate of 100 kHz results in total flow ~72 GB/s preshower. For readout preshower, 56 links DAQ have been reserved, having bandwidth 200 MB/s (2 kB/event). available downstream necessitates reduction volume by factor at least 7. A...
The TITUS, Tokai Intermediate Tank for Unoscillated Spectrum, detector, is a proposed Gd-doped Water Cherenkov tank with magnetised muon range detector downstream. It located at J-PARC about 2 km from the neutrino target and it as potential near Hyper-Kamiokande experiment. Assuming beam power of 1.3 MW 27.05 x 10^{21} protons-on-target sensitivity to CP mixing parameters achieved by TITUS presented. Also, cross sections Standard Model parameter determination, supernova dark matter are shown.
Phase and amplitude controlling ICs realized in a low cost standard silicon process are demonstrated. The design of several at S-, C- X-band has shown that germanium is strong contender to gallium arsenide where lowest noise figure not vital. This applies also the T/R-modules suited for military AESA-radars. circuits presented this paper manufactured by austriamicrosystems their 0.35 mum SiGe-BiCMOS with an f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...
The CMS Endcap Preshower (ES) sub-detector comprises 4288 silicon sensors, each containing 32 strips. data are transferred from the detector to counting room via 1208 optical fibres running at 800Mbps. Each fibre carries two, three or four sensors. For readout of Preshower, a VME-based system, Data Concentrator Card (ES-DCC), is currently under development. main objective board acquire on-detector up 36 links, perform on-line reduction zero suppression and pass concentrated event builder....
This paper describes the architecture of PACE3 and key design parameters for a large dynamic range front-end amplification low noise analog memory. Measured results from are presented characterizing chip's performance in terms gain, pulse shaping characteristics, noise, power consumption radiation tolerance with respect to total ionizing dose robustness single event upsets (SEU).
The tip of the tongue known-item retrieval (TOT-KIR) task involves 'one-off' an item for which a user cannot recall precise identifier. emergence several online communities where users pose queries to other indicates inability existing search systems answer such queries. Research in this domain is hampered by lack large, open or realistic datasets. Prior datasets relied on either annotation crowd workers, can be expensive and time-consuming, generating synthetic queries, unrealistic....
Interacting with a speech interface to query Question Answering (QA) system is becoming increasingly popular. Typically, QA systems rely on passage retrieval select candidate contexts and reading comprehension extract the final answer. While there has been some attention improving part of against errors that automatic recognition (ASR) models introduce, remains unexplored. However, such can affect performance retrieval, leading inferior end-to-end performance. To address this gap, we augment...
Dense retrieval has become the new paradigm in passage retrieval. Despite its effectiveness on typo-free queries, it is not robust when dealing with queries that contain typos. Current works improving typo-robustness of dense retrievers combine (i) data augmentation to obtain typoed during training time (ii) additional robustifying subtasks aim align original, their variants. Even though multiple variants are available as positive samples per query, some methods assume a single sample and...
The CMS Global Calorimeter Trigger (GCT) is the device within Level-1 calorimeter trigger system which assigned tasks of finding and sorting forward, central tau-jet candidates, isolated non-isolated electron candidates reading out all data. GCT has been installed commissioned in underground cavern. A sophisticated software package developed for controlling configuring hardware monitoring status. Over past two years undergone detailed testing its performance well understood. design provides...
In simple open-domain question answering (QA), dense retrieval has become one of the standard approaches for retrieving relevant passages to infer an answer. Recently, also achieved state-of-the-art results in multi-hop QA, where aggregating information from multiple pieces and reasoning over them is required. Despite their success, methods are computationally intensive, requiring GPUs train. this work, we introduce a hybrid (lexical dense) approach that highly competitive with models, while...
Testing of N/spl times/N Non-Restoring Cellular Array Dividers (NRCAD) with respect to path delay faults, is studied in this paper. Design modifications are proposed and a selection method suggested. We prove that the selected paths Single Path Propagating Hazard Free Robustly Testable (SPP-HFRT) by measuring their delays along any other divider can be easily calculated. The number impressively small compared all divider. overhead modified design for values N negligible, while hardware too....
Algorithms have been studied using Monte Carlo techniques and implemented in a fast Xilinx Virtex II pro field programmable gate array (FPGA), order to calculate remove, after pedestal subtraction, the common mode of group adjacent channels. The implementation algorithms has optimized both for speed minimal FPGA resources, so as be used multi-channel applications. aim this work is define optimum algorithm calculation rejection CMS Preshower detector.
A flexible test system for evaluating the CMS Preshower [1] on-detector electronics (analogue and digital) has been built using off-the-shelf components. The utilizes an FPGA a microcontroller, is controlled via standard USB link by PC running LabVIEW. testbench emulates full functionality of Timing, Trigger Control (TTC) [2], as well Tracker front-end control (FEC) [3] provides electrical and/or optical data acquisition system, without need VME electronics. will be principle evaluation...
The CMS Global Calorimeter Trigger (GCT) uses data from the calorimeters to compute a number kinematical quantities which characterize LHC event. GTC output is used by (GT) along with Muon (GMT) produce Level-1 Accept (L1A) decision. design for current GCT system commenced early in 2006. After rapid development phase all different components have been produced and large fraction of them installed at electronics cavern (USC-55). There has under test since March 2007. This paper reports...
Algorithms have been studied using Monte Carlo techniques and implemented in a fast Xilinx Virtex II pro FPGA, order to calculate remove after pedestal subtraction the common mode of group adjacent channels. The implementation algorithms has optimized both for speed minimal FPGA resources, be used multi-channel applications. This work carried out define optimum algorithm calculation rejection CMS preshower detector
The CMS Preshower is a fine grain detector that comprises 4288 silicon sensors, each containing 32 strips. data are transferred from the to counting room via 1208 optical fibres running at 800 Mbps. This enormous total flow of about 1 Tbps necessitates significant reduction in volume. For readout Preshower, VME-based system currently under development. main objective board acquire on-detector up 36 links, perform online and pass concentrated event builder. principle modules based on being...
ATLAS is proposing to replace the entire tracking system for HL-LHC operation. The ``Letter of Intent'' baseline pixel size at higher radii was 50 × 250μm2 (φ η), based on FE-I4 readout chip, and this optimized central barrel region. detector performance in end-cap disks can benefit from enhanced resolution radial direction improve impact parameter z-coordinate (along beam line) high η tracks, which critical pile-up environment HL-LHC. So called ``strixel'' geometries, with long narrow...