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Stent visualization methods to guide percutaneous coronary interventions and assess long-term patency

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World Journal of Cardiology 2021年第9期13卷 416-437页

作者： chadi ghafari Stéphane Carlier Department of Cardiology UMONSMons 7000Belgium Department of Cardiology CHU Ambroise ParéMons 7000Belgium

Evaluation of acute percutaneous coronary intervention(PCI)results and longterm follow-up remains challenging with ongoing stent *** imaging tools have been developed to assess native vessel atherosclerosis and stent expansion,improving overall PCI results and reducing adverse cardiac *** coronary analysis has played a crucial role in quantifying the extent of coronary artery disease and stent *** stent enhancement methods have been well validated and improved stent strut *** imaging remains the gold standard in PCI guidance but adds costs and time to the *** a recent shift towards non-invasive imaging assessment and coronary computed tomography angiography imaging have shown promising *** hereby review novel stent visualization techniques used to guide PCI and assess stent patency in the modern PCI era.

关键词： Percutaneous coronary intervention Stent visualization Stent underexpansion Quantitative coronary analysis Digital stent enhancement Intravascular ultrasound Optical coherence tomography Coronary computed tomography angiography

Exercise-induced torsades de pointes as an unusual presentation of cardiac sarcoidosis: A case report and review of literature

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World Journal of Cardiology 2020年第6期12卷 291-302页

作者： chadi ghafari Frédéric Vandergheynst Emmanuel Parent Kaoru Tanaka Stéphane Carlier Department of Cardiology Centre Hospitalier Universitaire Ambroise ParéMons 7000Belgium Department of Cardiology Universitéde MonsMons 7000Belgium Department of Internal Medicine Cliniques Universitaires de Bruxelles-ErasmeBruxelles 1070Belgium Department of Cardiology Universitair Ziekenhuis BrusselsJette 1090Belgium

BACKGROUND Sarcoidosis is a rare multisystem disease characterized histologically by noncaseating granuloma formation in the affected *** cardiac sarcoidosis is found on autopsy in up to 25%of sarcoidosis cases,it is still underdiagnosed and is associated with a poor *** the etiology of sarcoidosis remains unclear,an antigen triggered exaggerated immune response has been *** detection and prompt management of cardiac sarcoidosis remains *** SUMMARY A 60-year-old female,with pulmonary sarcoidosis in remission,presented to the cardiology outpatient clinic for evaluation of weeks-long dyspnea on moderate exertion(New York Heart Association class II)that was relieved by *** exercise stress test showed multifocal ventricular extrasystoles,followed by a self-limiting torsades de *** magnetic resonance imaging showed nondilated and normotrophic left ventricle with basoseptal and mid-septal *** magnetic resonance imaging-derived left ventricular ejection fraction was 45%.Delayed enhancement showed patchy transmural fibrosis of the septum and hyperenhancement of the papillary muscles,all in favor of extensive cardiac involvement of sarcoidosis.A double-chamber implantable cardiac defibrillator was implanted,and methylprednisolone(12 mg/d)and methotrexate(12.5 mg/wk)treatment was ***-up and implantable cardiac defibrillator interrogation showed episodes of asymptomatic nonsustained ventricular tachycardia and an asymptomatic episode of nonsustained ventricular tachycardia ending by the first antitachycardia pacing *** Along an extensive review of the literature,this unusual case report highlights the importance of early detection of cardiac involvement of sarcoidosis,in order to avoid potential complications and increase survival.

关键词： Sarcoidosis Cardiac sarcoidosis Torsades de pointes Ventricular tachycardia Immunotherapy Case report

Flexible Traceable Generic Genetic Algorithm

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Open Journal of Applied Sciences 2022年第6期12卷 877-891页

作者： chadi Kallab Samir Haddad Jinane Sayah Department of Computer Science and Mathematics Faculty of Arts and Sciences University of Balamand Koura Lebanon Department of Telecom and Networks Issam Fares Faculty of Technology University of Balamand Koura Lebanon

This document elaborates on the generic implementation one of the main heuristics algorithms verified through its quick application to a biology problem requiring to find out an optimal sequences tree topology. In order to solve this problem, categorized as Non-Polynomial Hard (NP-Hard), “to minimize differences between given (leaf) and/or derived (parent) sequences”, many popular methods are used. “The higher the number of given sequences is, the more advisable and efficient it would be to go towards heuristics as they would provide a close-enough solution faster, as for instance genetic algorithms amongst others do. Thus, as part of a larger research in Heuristics and phylogenies, this paper aims to suggest a generic advanced flexible implementation of the Genetic Algorithm verified by a “general way to encode the problem into instances of different heuristic algorithms” as mentioned in our first reference below. The proposed algorithm will also present a chronology traceability feature for further analysis and potential improvements.

关键词： Generic Heuristics Phylogenies Bio-Informatics NP-Hard Genetic Algorithm

Generic Simulated Annealing

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Open Journal of Applied Sciences 2022年第6期12卷 1011-1025页

作者： chadi Kallab Samir Haddad Jinane Sayah Mohamad Chakroun Department of Computer Science and Mathematics Faculty of Arts and Sciences University of Balamand Koura Lebanon Department of Telecom and Networks Issam Fares Faculty of Technology University of Balamand Koura Lebanon Faculty of Computer Science and Electrical Engineering Universit&auml t Rostock Rostock Germany

One of the many problems that are considered to be NP-Hard is the Multiple Sequence Alignment one that initially requires, as for any other of its siblings, a specific encoding schema and design of the main functionalities of the heuristics algorithm being implemented and executed. This paper intends to discuss our proposed generic implementation of the Simulated Annealing, inspired for the procedure of cooling and shaping methods of metals. In our algorithm, we attempted to add some executions tracing functionalities in order to help later analysis for initial parameters tuning. On another hand, we also tried to get closer in our attempt to mimic the cooling of metals, but giving it an option to run under different cooling schedules. We proposed a few schedules that seemed to be studied and/or used in many algorithm implementations.

关键词： Generic Heuristics Phylogenies Bio-Informatics NP-Hard Simulated Annealing

Internet of Things: Towards a Solid Ecosystem of Interconnected Things

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Advances in Internet of Things 2022年第3期12卷 35-64页

作者： Mohamad Chakroun Jinane Sayah chadi Kallab Samir Haddad Faculty of Computer Science and Electrical Engineering Universit&#228 t Rostock Rostock Germany Issam Fares Faculty of Technology Department of Telecom and Network University of Balamand Koura Lebanon Faculty of Arts and Sciences Department of Computer Science University of Balamand Koura Lebanon

The Internet of Things (IoT) is a technological revolution that has changed everything we do and given us a new perspective on our daily lives, but despite the fact that numerous publications have focused on characterizing the many edges and technologies that make up an IoT system, the IoT ecosystem is still seen as too complex to be recognized as a stand-alone environment due to its significant diversity;hence, the objective of this research is to address such a complex environment in a way that highlights its components and distinguishes them both individually and in relation to their broader context. Therefore, the definition of IoT and its emergence were discussed and organized around the timeline of Internet development phases demonstrating that IoT has been a need that has accompanied the presence of the Internet since its early stages, and then its growth and impact were discussed and highlighted with estimates and numbers. On the technical side, each of the following groups, IoT components, protocols, and architectures, was defined, discussed, and grouped in such a way that their intergroup organization, as well as their placement and contribution to the overall ecosystem, was highlighted. This, in addition to the various examples mentioned throughout the discussion, will provide the reader with a better understanding of the Internet of Things and how deeply it has become entwined in our daily lives and routines as a result of its numerous applications.

关键词： Internet of Things IoT Components IoT Architectures IoT Economic Impact IoT Growth Networking Protocols TCP/IP IoT Protocols IoT Challenges IoT Attacks

Complete Modeling for Systems of a Marine Diesel Engine

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Journal of Marine Science and Application 2015年第1期14卷 93-104页

作者： Hassan Moussa Nahim Rafic Younes chadi Nohra Mustapha Ouladsine Faculty of Engineering Lebanese University Beirut Lebanon LSIS Aix Marseille University Marseille 13397 France Faculty of Engineering Beirut Arab University (BA U) Tripoli Lebanon

这份报纸基于物理、半物理、数学、热力学的方程论述一台海洋的柴油机引擎的一个模拟器模型，它允许快预兆的模拟。整个引擎系统被划分成几功能的块：冷却，润滑油，空气，注射，燃烧和排出物。亚模型和单个块的动态特征根据在参考书 6M... 详细信息

这份报纸基于物理、半物理、数学、热力学的方程论述一台海洋的柴油机引擎的一个模拟器模型，它允许快预兆的模拟。整个引擎系统被划分成几功能的块：冷却，润滑油，空气，注射，燃烧和排出物。亚模型和单个块的动态特征根据在参考书 6M26SRP1 下面为 SIMB 同伴从一张海洋的柴油机引擎测试凳子收集的引擎工作原则方程和试验性的数据被建立。全面引擎系统动力学用 Matlab/Simulink 的亚块和 S 功能被表示为一套同时的代数学、微分的方程。这个模型的模拟，在 Matlab/Simulink 上实现了被验证了并且能被用来获得引擎性能，压力，温度，效率，热版本，曲柄角度，燃料率，在不同亚块的排出物。模拟器将被使用，在未来工作，到学习处于有缺点的条件的引擎性能，和罐头被用来象设计者一样在差错诊断和评价( FDI )帮助海洋的工程师预言冷却系统的行为，润滑油系统，注射系统，燃烧，排出物，以便优化不同部件的尺寸。这个程序是为差错模拟器的一个平台，到在为差错参数改变值例如的亚块引擎输出上调查影响：有缺点的燃料注射者，漏的柱体，穿的燃料泵，破活塞戒指，脏 turbocharger，脏空气过滤器，脏空气冷却器，空气漏，水漏，油漏和污染，热 exchanger 犯规，泵穿，注射者的失败(并且许多其它) 。

关键词：发动机系统船用柴油机 Simulink环境 Matlab 燃料消耗率热力学方程发动机性能故障模拟器

Mathematical Model with Energy and Clustering Energy Based Routing Protocols as Remediation to the Directional Source Aware Routing Protocol in Wireless Sensor Networks

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Wireless Sensor Network 2022年第2期14卷 23-39页

作者： Samir Haddad Jinane Sayah Bachar El-Hassan chadi Kallab Mohamad Chakroun Nisrine Turkey Jinan Charafeddine Hani Hamdan Faculty of Arts and Sciences Department of Computer Science and Mathematics University of Balamand Koura Lebanon Issam Fares Faculty of Technology Department of Telecom and Networks University of Balamand Koura Lebanon Faculty of Engineering Branch 1 Department of Electricity and Electronics Lebanese University Lebanon Faculty of Computer Science and Electrical Engineering The University of Rostock Rostock Germany Faculty of Engineering Notre Dame University Lebanon Université Paris-Saclay P&ocirc le scientifique et technologique de Vélizy Laboratoire d'Ingénierie des Systèmes de Versailles (LISV EA4048) Vélizy France Université Paris-Saclay CentraleSupélec CNRS Laboratoire des Signaux et Systèmes (L2S UMR CNRS 8506) Gif-sur-Yvette France

In this paper, a routing protocol for wireless sensor network, baptized energy based protocol (EBP) is proposed. Wireless sensor network presents many challenges and constraints, and one of the major constraints is the routing problem. Due to the limited energy of sensor nodes, routing in this type of network shall perform efficiently to maximize the network lifetime. One of the proposed algorithms is the directional source aware routing protocol (DSAP) which, after simulation, showed a lot of limitations and drawbacks. The modified directional source aware routing protocol (MDSAP) was proposed by the authors of this paper to address some of the DSAP’s limitations but remains limited to a fixed topology, fixed source and stationary nodes. So EBP is proposed and operated under different scenarios and showed, after its simulation using TinyOS, many advantages in terms of load balancing, free looping, minimizing packet error rate and maximizing network lifetime.

关键词： Cluster DSAP Energy MDSAP Routing Sensor Network Topology Energy Based Protocol

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Generic Tabu Search

Journal of Software Engineering and Applications 2022年第7期15卷 262-273页

作者： chadi Kallab Samir Haddad Imad El-Zakhem Jinane Sayah Mohamad Chakroun Nisrine Turkey Jinan Charafeddine Hani Hamdan Wafaa Shakir Department of Computer Science and Mathematics Faculty of Arts and Sciences University of Balamand Koura Lebanon Department of Telecom and Networks Issam Fares Faculty of Technology University of Balamand Koura Lebanon Faculty of Computer Science and Electrical Engineering Universit&#228 t Rostock Rostock Germany Faculty of Engineering Notre Dame University Jounieh Lebanon Université Paris-Saclay P&#244 le scientifique et technologique de Vélizy Laboratoire d’Ingénierie des Systèmes de Versailles (LISV EA4048) Vélizy France Université Paris-Saclay CentraleSupélec CNRS Laboratoire des Signaux et Systèmes (L2S UMR CNRS 8506) Gif-sur-Yvette France Department of Computer Systems Faculty of Engineering Al-Furat Al-Awsat Technical University Babil Iraq

The Multiple Sequence Alignment problem is considered to be an NP-Hard problem, requiring initially a specific encoding schema and design, as for any other of its siblings, to implement and run any of the main categories of heuristic. This paper intends to discuss our proposed generic implementation of the Tabu Search algorithm, a heuristic procedure proposed by Fred Glover to solve discrete combinatorial optimization problems. In this research, we try to coordinate and synchronize different designs/implementations discussed in many literatures, with some of the references mentioned in this paper. The basic idea is to avoid that the search for best solutions stops when a local optimum is found, by maintaining a list of non-acceptable or forbidden (taboo) solutions/costs, called Tabu list or Short-Term Memory (STM). In our algorithm, we attempt to add some executions tracing functionalities in order to help later analysis for initial parameters tuning. On the other hand, we propose to include the concept of a list called Long-Term Memory (LTM), so that some of the best solutions found so far can be saved, for search diversification.

关键词： Generic Heuristics Bio-Informatics NP-Hard Tabu Search STM LTM

Takotsubo Cardiomyopathy with a Dramatically Rapid Resolution

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International Journal of Clinical Medicine 2011年第2期2卷 139-142页

作者： Muhammad Alichaudhry chadi Dib Ralph Lazzara 不详

Takotsubo cardiomyopathy is a relatively rare disease entity with a rapid reversible ventricular dysfunction, which usually occurs in post–menopausal women, and is frequently associated with a stressful event. Diagnosing Takotsubo cardiomyopathy can sometimes be challenging. The absence of coronary artery obstructive disease, and the dramatic presentation of the patient mimicking acute coronary syndrome, make this disease unique. We discuss here a case of Takotsubo cardiomyopathy with extremely rapid resolution in just two days, which we believe is being reported for the first time and touch briefly on the salient features, pathogenesis, diagnosis, treatment, prognosis, and clinical significance of this unique entity.

关键词： Takotsubo Cardiomyopathy Rapid Resolution