Repository of University of Nova Gorica

Search the repository
A+ | A- | Help | SLO | ENG

Query: search in
search in
search in
search in
* old and bologna study programme

Options:
  Reset


1 - 10 / 26
First pagePrevious page123Next pageLast page
1.
An improved low-input resistance folded-cascode transimpedance amplifier for giga-bit per second optical communication front-ends
Soorena Zohoori, Ahmad Hosseini, Mehrdad Amirkhan Amirkhan Dehkordi, Seyed Mehdi Mirsanei, 2023, original scientific article

Abstract: The present study is devoted to articulating a modified folded‐cascode circuit, to make folded‐cascode structures an attractive configuration as a transimpedance amplifier (TIA) for being employed in Giga‐bit per second optical communication receiver systems. Giga‐bps communication receivers are highly necessitating circuits to isolate the input parasitic capacitance of the photodiode. The present modification makes folded cascodes comparable to the famous regulated cascode (RGC) structures by isolating this parasitic capacitor almost by the same quantity. The system is shown to be capable of operating at 2.5 Gbps up to 8 Gbps data rate with a fixed bandwidth. The paper analyzes and evaluates the designed circuit mathematically, and the obtained simulated results from Cadence using TSMC 65 nm CMOS validate the suitability of the modified circuit as a TIA.
Keywords: improved folded-cascode, low input resistance, low noise, optical receiver, transimepdance amplifier
Published in RUNG: 08.12.2023; Views: 460; Downloads: 2
URL Link to file
This document has many files! More...

2.
Max-type reliability in uncertain post-disaster networks through the lens of sensitivity and stability analysis
Ahmad Hosseini, 2024, original scientific article

Abstract: The functionality of infrastructures, particularly in densely populated areas, is greatly impacted by natural disasters, resulting in uncertain networks. Thus, it is important for crisis management professionals and computer-based systems for transportation networks (such as expert systems) to utilize trustworthy data and robust computational methodologies when addressing convoluted decision-making predicaments concerning the design of transportation networks and optimal routes. This study aims to evaluate the vulnerability of paths in post-disaster transportation networks, with the aim of facilitating rescue operations and ensuring the safe delivery of supplies to affected regions. To investigate the problem of links' tolerances in uncertain networks and the resiliency and reliability of paths, an uncertainty theory-based model that employs minmax optimization with a bottleneck objective function is used. The model addresses the uncertain maximum reliable paths problem, which takes into account uncertain risk variables associated with links. Rather than using conventional methods for calculating the deterministic tolerances of a single element in combinatorial optimization, this study introduces a generalization of stability analysis based on tolerances while the perturbations in a group of links are involved. The analysis defines set tolerances that specify the minimum and maximum values that a designated group of links could simultaneously fluctuate while maintaining the optimality of the max-type reliable paths. The study shows that set tolerances can be considered as well-defined and proposes computational methods to calculate or bound such quantities - which were previously unresearched and difficult to measure. The model and methods are demonstrated to be both theoretically and numerically efficient by applying them to four subnetworks from our case study. In conclusion, this study provides a comprehensive approach to addressing uncertainty in reliability problems in networks, with potential applications in various fields.
Keywords: Disaster Management, Network Reliability, Stability Analysis, Transportation, Uncertainty
Published in RUNG: 24.11.2023; Views: 408; Downloads: 3
URL Link to file
This document has many files! More...

3.
4.
5.
6.
Determining the Optimal Flows in Zero-Time Dynamic Networks
Ahmad Hosseini, Fardin Dashty Saridarq, 2012, original scientific article

Keywords: Linear algebra, Networks/graphs, Linear programming
Published in RUNG: 15.02.2023; Views: 985; Downloads: 1
This document has many files! More...

7.
Uncertain Most Reliable Data Transmission Path: A Chance-Constrained Scenario with Risk Considerations
Ahmad Hosseini, 2015, invited lecture at foreign university

Keywords: Uncertainty, Most Reliable Path, Chance-Constrained
Published in RUNG: 15.02.2023; Views: 788; Downloads: 0
This document has many files! More...

8.
Optimized Routing in Forestry with the Consideration of Multiple Economical and Ecological Objectives
Ahmad Hosseini, Ola Lindroos, Eddie Wadbro, published scientific conference contribution abstract

Keywords: Optimization, Forestry, Strip Road
Published in RUNG: 15.02.2023; Views: 1005; Downloads: 0
This document has many files! More...

9.
Connectivity reliability in uncertain networks with stability analysis
Ahmad Hosseini, Eddie Wadbro, 2016, original scientific article

Keywords: Traffic network, Uncertainty theory, Reliability, Chance-constrained, Stability analysis
Published in RUNG: 14.02.2023; Views: 842; Downloads: 0
This document has many files! More...

10.
An Addendum on Postoptimality of Maximally Reliable Path
Ahmad Hosseini, Bita Kabir Baiki, 2017, original scientific article

Keywords: Network theory, Maximally reliable path
Published in RUNG: 14.02.2023; Views: 756; Downloads: 0
This document has many files! More...

Search done in 0.05 sec.
Back to top