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Articles by Ivan Dimov
Optimality Notions for Resolvent Monte Carlo
This version is not peer-reviewed. Tsvetelin Tsetskov * ,Ivan T. Dimov * Tsvetelin Tsetskov * ,Ivan T. Dimov * You are already at the latest version Resolvent Monte Carlo estimates eigenvalues of large matrices by sampling Markov chains and reading the target value off a truncated resolvent quotient, trading exact arithmetic for a stochastic error that the almost-optimal sampling scheme is designed to suppress. We study when that error vanishes outright.
Comparative Analysis of New Unbiased and Biased Monte Carlo Algorithms for the Fredholm Integral Equation of the Second Kind
This version is not peer-reviewed. Venelin Todorov *,Ivan Dimov * Venelin Todorov *,Ivan Dimov * Submitted: 06 November 2025 You are already at the latest version This paper presents a comprehensive stochastic framework for solving Fredholm integral equations of the second kind, combining biased and unbiased Monte Carlo approaches with modern variance-reduction techniques.
Safety and efficacy of provocative angiography for localization and treatment of gastrointestinal hemorrhage
Get full text access Log in, subscribe or purchase for full access. References 1. Kate, V. ∙ Sureshkumar, S. ∙ Gurushankari, B. ... Acute upper non-variceal and lower gastrointestinal bleeding J Gastrointest Surg. 2022; 26:932-949 2. Ghassemi, K.A. ∙ Jensen, D.M. Lower GI bleeding: epidemiology and management Curr Gastroenterol Rep. 2013; 15 3. Hegde, S. ∙ Sutphin, P.D. ∙ Zurkiya, O. ... Provocative mesenteric angiography for occult gastrointestinal bleeding: a systematic review CVIR Endovasc. 2023; 6 4.
"Ultrafast Two-Photon Imaging of a High-Gain Voltage Indicator in Awake" by Vincent Villette, Mariya Chavarha et al.
Keywords Action Potentials, Animals, Brain, CHO Cells, Cells, Cultured, Cricetinae, Cricetulus, Female, GTPase-Activating Proteins, Green Fluorescent Proteins, HEK293 Cells, Humans, Male, Mice, Mice, Inbred C57BL, Microscopy, Fluorescence, Multiphoton, Optogenetics, Phosphoric Monoester Hydrolases, Rats, Rats, Sprague-Dawley, Running, Theta Rhythm, Wakefulness Abstract Optical interrogation of voltage in deep brain locations with cellular resolution would be immensely useful for understanding...
A Confidence-Interval Circular Intuitionistic Fuzzy Method for Optimal Master and Sub-Franchise Selection: A Case Study of Pizza Hut in Europe
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
First Record of Two Nasal Mites Genus Rhinonyssus (Mesostigmata, Rhinonyssidae) Parasitizing Birds from Estonia
1. Introduction Mites of the family Rhinonyssidae Trouessart, 1895 (Parasitiformes: Mesostigmata, Gamasina), live in the nasal cavity and are endoparasites of birds. The mites of this family are known to parasitize almost all presently recognized orders of birds [1,2,3,4,5,6]. The world’s rhinonissid fauna currently include more than 600 species, grouped into 16 genera instead of 11 genera [7,8].
Light‐Based 3D Multi‐Material Printing of Micro‐Structured Bio‐Shaped, Conducting and Dry Adhesive Electrodes for Bioelectronics
1 Introduction Additive manufacturing (AM) has been announced as the 4th industrial revolution due to its customization degree and outstanding versatility.[1] Metal printing,[2] multi-material printing, complex inks,[3] or printing velocity are the remaining limitations that this technology still presents.
Cutting-Edge Monte Carlo Framework: Novel “Walk on Equations” Algorithm for Linear Algebraic Systems
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
Mechanisms of Formation of Antibodies against Blood Group Antigens That Do Not Exist in the Body
1. Introduction The main ABO blood groups were discovered by Landsteiner [1]. The molecular and genetic mechanisms of the blood group antigens had been discovered by Yamamoto et al. [2]. Briefly, according to the “Landsteiner’s Law”, people with the group O (although known in some countries as 0, it is internationally known as O) do not synthesise the antigens A and B (AgA, AgB), but have antibodies (Ab) against AgA (AbA) and AgB (AbB). Individuals with the blood group A produce AgA and AbB.
Morphometrical Identification and Phylogenetic Analysis of Rhinonyssidae (Acari: Mesostigmata) Parasitizing Avian Hosts: New Molecular Data
Abstract : Members of the family Rhinonyssidae are tiny hematophagous endoparasitic mites that inhabit the nasal cavities of birds and can cause trauma to their hosts. Traditionally, identifying species in this group has relied on observing their morphometrical characteristics. Nevertheless, determining species within this particular group has become more challenging due to the rising number of newly discovered species.
Unveiling the Power of Stochastic Methods: Advancements in Air Pollution Sensitivity Analysis of the Digital Twin
This is an early access version, the complete PDF, HTML, and XML versions will be available soon. Open AccessArticle by Venelin Todorov 1,2 and Ivan Dimov 1,* 1 Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, Acad. G̃. Bonchev Str. Bl. 25A, 1113 Sofia, Bulgaria 2 Institute of Mathematics and Informatics, Bulgarian Academy of Sciences, Acad. G̃. Bonchev Str. Bl. 8, 1113 Sofia, Bulgaria * Author to whom correspondence should be addressed.
Design of a Low-cost, Self-adaptive and MRI-compatible Cardiac Gating System
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A Super-Convergent Stochastic Method Based on the Sobol Sequence for Multidimensional Sensitivity Analysis in Environmental Protection
Abstract : Environmental security is among the top priorities worldwide, and there are many difficulties in this area. The reason for this is a painful subject for society and healthcare systems. Multidimensional sensitivity analysis is fundamental in the process of validating the accuracy and reliability of large-scale computational models of air pollution.
Institutional Crypto Adoption and the Love for NFTs
By Ivan Dimov Cryptocurrency has always been volatile with regards to its fiat-comparative value. It Is important to remember that the blockchains are decentralized and there isn’t any single entity behind it putting out media fires. With that in mind, current fiat value becomes irrelevant to believers when we are Hodlers, as there are many promising signs of what’s yet to come. Crypto and NFT adoption is still just getting started.
Crime, Adoption, and the Resurgence of Tezos
By Ivan Dimov Recently, it seems we are regularly hearing about another cryptocurrency-related scam, another major corporation developing non-fungible token (NFT) collectables, and another sovereign nation adopting digital currencies. But how do we sort through all the noise put out by the media? Do we feed into the over-cautiousness painted by the scary stories, or is it ok to jump in the water and play with the fish?
Institutional Crypto Adoption and the Love for NFTs
By Ivan Dimov Cryptocurrency has always been volatile with regards to its fiat-comparative value. It Is important to remember that the blockchains are decentralized and there isn’t any single entity behind it putting out media fires. With that in mind, current fiat value becomes irrelevant to believers when we are Hodlers, as there are many promising signs of what’s yet to come. Crypto and NFT adoption is still just getting started.
Future Advances in Diagnosis and Drug Delivery in Interventional Radiology Using MR Imaging-Steered Theranostic Iron Oxide Nanoparticles
Superparamagnetic iron oxide nanoparticles (SPIONs) are increasingly being recognized as theranostic. Magnetized SPIONs cause changes in T1 and T2 relaxation that differ from gadolinium contrast agents ( 1 Pouponneau P. Leroux J.C. Soulez G. Gaboury L. Martel S. Co-encapsulation of magnetic nanoparticles and doxorubicin into biodegradable microcarriers for deep tissue targeting by vascular MRI navigation. Biomaterials. 2011; 32: 3481-3486 ).
Soft Polydimethylsiloxane-Supported Lipid Bilayers for Studying T Cell Interactions
Abstract Much of what we know about the early stages of T cell activation has been obtained from studies of T cells interacting with glass-supported lipid bilayers that favor imaging but are orders of magnitude stiffer than typical cells. We developed a method for attaching lipid bilayers to polydimethylsiloxane polymer supports, producing “soft bilayers” with physiological levels of mechanical resistance (Young’s modulus of 4 kPa).
Exercise Intolerance in Patients with Chronic Iliocaval Venous Occlusion: Initial Experience with Noninvasive Exercise Testing before and after Intervention
Abstract Patients with chronic iliocaval occlusions after thrombosis often present with exercise intolerance, which improves after venous reconstruction. Three male patients with chronic iliocaval occlusions underwent a cardiorespiratory fitness test before and 2.5–11 months after venous reconstruction using stents.
Security Boulevard
Learn about passive intelligence gathering Learn about passive intelligence gathering, one of the key aspects of ethical hacking, in this four-video overview course. This skills course covers ⇒… Go on to the site to read the full article *** This is a Security Bloggers Network syndicated blog from Infosec Resources authored by Ivan Dimov. Read the original post at: http://feedproxy.google.com/~r/infosecResources/~3/-LI9-TTPiSk/ May 3, 2019May 3, 2019 Ivan Dimov Penetration Testing
Novel promoters and coding first exons in DLG2 linked to developmental disorders and intellectual disability
Neurodevelopmental disorders (NDDs) are impairments of the growth, development, and function of the brain. They show vast genetic heterogeneity, pleiotropy, monogenic to polygenic origin, and age-related phenotypic variability [1–6].
An in-App Browser with ThemeableBrowser PhoneGap Plugin
PhoneGap is a framework that allows developers to build mobile applications using HTML, CSS and JavaScript. With it, you can build applications for a variety of mobile operating systems such as Android, iOS and Windows Mobile. Plenty of core plugins and API hooks are available and there is a thriving community ecosystem. For example, using cordova-plugin-geolocation you can get a user’s locations and with cordova-plugin-vibration you can make the user’s device vibrate.
Create a Text-to-Speech Chrome Extension
This article was peer reviewed by Marc Towler and Ralph Mason. Thanks to all of SitePoint’s peer reviewers for making SitePoint content the best it can be! Converting text to speech, also known as Speech Synthesis or TTS (text-to-speech), is an artificial way to produce human speech. It is not something new, as people have tried to create machines which produce human speech for at least a thousand years according to Wikipedia.
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