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8183 articles
Journal: Artery Research
Review Article
Waves in arteries: A review of wave intensity analysis in the systemic and coronary circulations
Alun D. Hughes, Kim H. Parker, Justin E. Davies
Pages: 51 - 59
The intermittent ejection of blood by the ventricle results in pulsatile pressure and flow waveforms in the circulation. Understanding and characterizing this pulsatile behaviour is attracting increasing clinical interest, as it may have important implications for risk prediction and the mechanisms of...
Research Article
Daytime Sleepiness and Sleep Quality among Undergraduate Medical Students in Sialkot, Pakistan
Noreen Maqbool Bokhari, Mubashir Zafar
Pages: 51 - 55
Background/Objective: Daytime sleepiness and poor sleep quality are common among medical students, and are expected to affect their academic performance. The common problems are duration of sleep, delayed onset of sleep, and daytime sleepiness. The objective of this study is to determine the prevalence...
Research Article
Security Patterns for Connected and Automated Automotive Systems†
Betty H. C. Cheng, Bradley Doherty, Nicholas Polanco, Matthew Pasco
Pages: 51 - 77
As automotive systems become increasingly sophisticated with numerous onboard features that support extensive inward and outward-facing communication, cybersecurity vulnerabilities are exposed. The relatively recent acknowledgement of automotive cybersecurity challenges has prompted numerous research...
Journal: Journal of African Trade
Research Article
Trade Costs and Demand-Enhancing Effects of Agrifood Standards: Consequences for Sub-Saharan Africa
Aristide Djimgou Tchakounte, Dela-Dem Doe Fiankor
Pages: 51 - 64
Agrifood standards impede trade by increasing compliance costs, but they can also enhance trade by signalling quality. This paper disentangles the trade costs and demand-enhancing effects of two important standards—technical barriers to trade, and sanitary and phytosanitary measures—on (i) global agricultural...
Journal: Intensive Care Research
Correspondence
Post-Intubation Empirical Fluid Resuscitation as an Early Step to Prevent Acute Kidney Injury in Mechanically Ventilated COVID-19 Patient
Amarjeet Kumar, Ajeet Kumar, Chandni Sinha, Prabhat Kumar Singh, Chethan Vamshi, Gayatri D. Sagdeo
Pages: 51 - 53
Acute Kidney Injury (AKI) is one of the major complication of the Coronavirus Disease 2019 (COVID-19) infection, commonly manifested during the second week of infection. The pathophysiology and mechanisms of AKI in patients with COVID-19 have not been fully elucidated and seem to be multifactorial. There...
Research Article
On (q, h)-Analogue of Fractional Calculus
Jan Čermák, Luděk Nechvátal
Pages: 51 - 68
The paper discusses fractional integrals and derivatives appearing in the so-called (q, h)-calculus which is reduced for h = 0 to quantum calculus and for q = h = 1 to difference calculus. We introduce delta as well as nabla version of these notions and present their basic properties. Furthermore, we...
Journal: Artery Research
Corrigendum
Corrigendum to “Estimation of maximal oxygen consumption and heart rate recovery using the Tecumseh sub-maximal step test and their relationship to cardiovascular risk factors” [Artery Research, Volume 18, Issue C, June 2017]
Alun D. Hughes, Nish Chaturvedi
Pages: 51 - 51
Research Article
An Improved Semantic Role Labeling for Myanmar Text
Zin Mar Kyu, Naw Lay Wah
Pages: 51 - 58
The semantic role labeling plays a key role to extract semantic information from language text for the purpose of information retrieval, text summarization, plagiarism test, etc. This paper presents two main parts: MynNet and semantic role labeling. MynNet, which is a FrameNet for Myanmar language is...
Journal: Artery Research
Conference Abstract
10.01 ARTERIAL STIFFNESS IS ASSOCIATED WITH ELASTIN DEFRAGMENTATION AND MEDIAL COLLAGEN CONTENT IN THE HUMAN AORTA
A. Mahmud, M. McNulty, E. McGovern, V. Young, M. Tolan, J. Feely
Pages: 51 - 52
Journal: Artery Research
Conference Abstract
06.08 RELATIONSHIP BETWEEN PULSE WAVE VELOCITY AND DIFFERENT BLOOD PRESSURE PATTERNS: THE VOBARNO STUDY
A. Paini, M.L. Muiesan, M. Salvetti, C. Corbellini, E. Belotti, G. Galbassini, C. Agabiti-Rosei, C. Aggiusti, L. Micheletti, V. Paderno, E. Agabiti-Rosei
Pages: 51 - 51
Journal: Artery Research
Conference Abstract
3.4 WAVE INTENSITY ANALYSIS PROVIDES NOVEL INSIGHTS INTO PULMONARY HYPERTENSION
Junjing Su, Charlotte Manisty, Kim H. Parker, Soren Mellemkjaer, Luke Howard, Ulf Simonsen, Alun Hughes
Pages: 51 - 52
Background: The objective of the study was to apply wave intensity analysis (WIA) in the pulmonary artery to characterise the magnitude, origin, type and timing of arterial waves in individuals with and without pulmonary hypertension (PH).
Methods: Right heart catheterisation was performed using a pressure...
Journal: Artery Research
Conference Abstract
06.07 EVALUATION OF A METHOD OF WAVE REFLECTION ASSESSMENT VIA TRIANGULAR FLOW WAVE APPROXIMATION
J.G. Kips, E.R. Rietzschel, M.L. De Buyzere, T.C. Gillebert, L.M. Van Bortel, P. Segers
Pages: 51 - 51
Journal: Artery Research
Conference Abstract
2.6 BLOOD PRESSURE-INDEPENDENCE OF AORTIC-TO-BRACHIAL ARTERY STIFFNESS RATIO IS DEPENDENT ON DISEASE STATUS
Matthew K. Armstrong, Martin G. Schultz, Dean S. Picone, James E. Sharman
Pages: 51 - 52
Introduction: Aortic stiffness predicts cardiovascular mortality but is limited as a risk marker because it is dependent on blood pressure (BP). A potential solution is provided from the ratio of aortic-to-brachial artery stiffness (ab-ratio), which is purported to be a BP-independent risk marker among...
Journal: Artery Research
Conference Abstract
3.3 DISCOVERY OF A NEW BLOOD PRESSURE PHENOTYPE FROM INVASIVE CENTRAL-TO-PERIPHERAL RECORDINGS: IMPLICATIONS FOR BRACHIAL CUFF ACCURACY AND CARDIOVASCULAR RISK ASSESSMENT
Dean Picone, Martin Schultz, Xiaoqing Peng, Andrew Black, Nathan Dwyer, Phil Roberts-Thomson, Velandai Srikanth, James Sharman
Pages: 51 - 51
Background: Accuracy of brachial cuff blood pressure (BP) may be influenced by individual variability in central-to-peripheral systolic BP (SBP)-amplification, but this has never been determined. We aimed to achieve this by characterising SBP-amplification phenotypes and examining associations with cuff...
Journal: Artery Research
Conference Abstract
06.06 ARTERIAL STIFFNESS AND ENLARGEMENT IN MILD TO MODERATE CHRONIC RENAL FAILURE: ROLE OF VITAMIN D
M. Briet, P. Houillier, M. Froissart, E. Bozec, C. Gaucci, C. Collin, S. Laurent, P. Boutouyrie
Pages: 51 - 51
Journal: Artery Research
Conference Abstract
2.5 NON-INVASIVE WAVE INTENSITY ANALYSIS IN THE AORTA AND INTERNAL CAROTID USING PHASE-CONTRAST MR ANGIOGRAPHY: THE EFFECT OF HYPERTENSION
Sandra Neumann, Mark Hamilton, Julian Paton, Angus Nightingale, Jonathan Brooks, Emma Hart, Giovanni Biglino
Pages: 51 - 51
Introduction: Hypertension is associated with stiffening of blood vessels, reduced arterial lumen and reduced cerebral blood flow; however, it is not known how lower cerebral blood flow relates to arterial structure or impacts on wave dynamics. We hypothesise increased backward wave energy and faster...
Journal: Artery Research
Conference Abstract
3.2 VARIABILITY IN MEAN ARTERIAL PRESSURE AND DIASTOLIC BLOOD PRESSURE FROM CENTRAL TO PERIPHERAL LARGE ARTERIES: RELEVANCE TO ARTERIAL PHYSIOLOGY AND ESTIMATED CENTRAL BLOOD PRESSURE
Martin Schultz, Dean Picone, Xiaoqing Peng, Andrew Black, Nathan Dwyer, Phillip Roberts-Thomson, James Sharman
Pages: 51 - 51
Background: Mean arterial pressure (MAP) and diastolic blood pressure (DBP) are thought to consistently decline approximately 1–3 mmHg from the aorta to peripheral large arteries, thus providing a small pressure gradient to aid blood flow. The magnitude of this gradient is important for correct waveform...
Journal: Artery Research
Conference Abstract
06.05 AORTIC STIFFNESS AND LEFT VENTRICULAR DIASTOLIC DYSFUNCTION IN PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD)
R. Sabit, C.E. Bolton, J.M. Edwards, A.G. Fraser, D.J. Shale, J.R. Cockcroft
Pages: 51 - 51
Journal: Artery Research
Conference Abstract
2.4 BRACHIAL CUFF RESERVOIR CHARACTERISTICS AND END-ORGAN MARKERS OF CARDIOVASCULAR RISK IN AUSTRALIAN ADULTS: A CROSS-SECTIONAL STUDY
Xiaoqing Peng, Martin Schultz, Michael Cheung, Melissa Wake, Jonathan Mynard, David Burgner, Richard Liu, James Sharman
Pages: 51 - 51
Objective: Reservoir-excess pressure measured using tonometry methods predicts cardiovascular events, but the operator-dependency of tonometry is an impediment to widespread use. A cuff-based blood pressure device has been developed to derive reservoir-excess pressure from measured brachial pressure...
Journal: Artery Research
Conference Abstract
3.1 REDUCING ARTERIAL STIFFNESS INDEPENDENTLY OF BP: PROOF OF CONCEPT? CAVI, PWV AND CARDIAC DATA IN THE 6-MONTH VASERA TRIAL
Charlotte Mills, Luca Faconti, Virginia Govoni, Steve Morant, Maria-Linda Casagrande, Haotian Gu, Benyu Jiang, Andrew Webb, Kennedy Cruickshank
Pages: 51 - 51
Purpose/ background/ objectives: People with or at risk of Type II diabetes (T2DM) are at increased risk of vascular disease and arterial stiffness (AS). We hypothesized that spironolactone and dietary nitrate (beetroot juice) separately and together would reduce AS, measured as cardiac-ankle vascular...
Research Article
An Introduction of Multiple P-adic Data Type and Its Parallel Implementation
Chao Lu, Xinkai Li
Pages: 51 - 59
Our research group has been working on the P-adic theory and its implementation. Based on the Chinese Remainder theorem and the Hensel code a new data type, called Multiple P-adic Data Type, has been established to realize rational calculation. With this data type all rational number operations are converted...
Research Article
The Poincaré–Nekhoroshev Map
Giuseppe Gaeta
Pages: 51 - 64
We study a generalization of the familiar Poincaré map, first implicitely introduced by N N Nekhoroshev in his study of persistence of invariant tori in hamiltonian systems, and discuss some of its properties and applications. In particular, we apply it to study persistence and bifurcation of invariant...
Research Article
Contact Symmetry of Time-Dependent Schrödinger Equation for a Two-Particle System: Symmetry Classification of Two-Body Central Potentials
P. Rudra
Pages: 51 - 65
Symmetry classification of two-body central potentials in a two-particle Schrödinger equation in terms of contact transformations of the equation has been investigated. Explicit calculation has shown that they are of the same four different classes as for the point transformations. Thus in this problem...
Research Article
Nonlinearized Perturbation Theories
Miloslav Znojil
Pages: 51 - 62
A brief review is presented of the two recent perturbation algorithms. Their common idea lies in a not quite usual treatment of linear Schrödinger equations via nonlinear mathematical means. The first approach (let us call it a quasi-exact perturbation theory, QEPT) tries to get the very zero-order approximants...
Research Article
Symmetry Reduction and Exact Solutions of the Yang-Mills Equations
Victor Lahno, Renat Zhdanov, Wilhelm Fushchych
Pages: 51 - 72
Research Article
Bacterial Foraging Optimized Hybrid Fuzzy Precompensated PD Control of Two Link Rigid-Flexible Manipulator
Srinivasan Alavandar, Tushar Jain, M. J. Nigam
Pages: 51 - 59
Light-weight flexible arms will most likely constitute the next generation robots due to their large payload carrying capacities at high speeds and less power demand. Control problem of robots with flexible members is more complex compared to rigid robots due to vibrations during the motion. This paper...
Research Article
Regularity of Steady Periodic Capillary Water Waves with Constant Vorticity
Calin Iulian Martin
Pages: 51 - 57
We prove a regularity result for steady periodic travelling capillary waves of small amplitude at the free surface of water in a flow with constant vorticity over a flat bed.
Research Article
Classical Lie Symmetries and Reductions of a Nonisospectral Lax Pair
P. G. Estévez, M. L. Gandarias, J. Lucas
Pages: 51 - 60
The classical Lie method is applied to a nonisospectral problem associated with a system of partial differential equations in 2 + 1 dimensions (Maccari A, J. Math. Phys. 12 (1998) 6547–6551.). Identification of the classical Lie symmetries provides a set of reductions that give rise to different nontrivial...
Research Article
Playground-related Extremity Fractures in an Asian Setting over the Last Decade – Are We Safe?
Kenneth Pak Leung Wong, Jeannie Leh Ying Wong, Arjandas Mahadev
Pages: 50 - 55
The cost of playground-related injuries remains significant. Measures adopted to prevent such fractures or reduce their severity would translate into appreciable financial savings. Our study looks at the changes in playground-related extremity fracture epidemiology over the past decade after the implementation...
Journal: Artery Research
Discussion
The importance of Michel Safar’s work for the European Society of Hypertension
Stéphane Laurent
Pages: 50 - 50
Journal: Artery Research
Research Article
Histopathology and histomorphometry of umbilical cord blood vessels. Findings in normal and high risk pregnancies☆
Manuel Vázquez Blanco, Hilda Ruda Vega, Roberto A. Guerri-Guttenberg, Rodolfo Giuliano, Daniel R. Grana, Francisco Azzato, José Milei
Pages: 50 - 57
Objective: A systematic histological, morphometric and immunohistochemical (PAI-1 and TGF-β1) study of umbilical vessels in normal and pathological conditions was undertaken in order to describe and compare the lesions found.
Methods: Segments of umbilical cords were obtained from 92 pregnancies/107...
Journal: Artery Research
Conference Abstract
06.04 NON-ALCOHOLIC FATTY LIVER DISEASE IS ASSOCIATED WITH IMPAIRED SECRETION OF FAT PRODUCED HORMONES AND INCREASED CARDIOVASCULAR RISK
K. Baou, C. Vlachopoulos, E. Manesis, N. Ioakeimidis, G. Papatheodoridis, J. Koskinas, A. Archimandritis, C. Stefanadis
Pages: 50 - 50
Journal: Artery Research
Conference Abstract
2.3 BIOMECHANICAL AND STRUCTURAL QUANTIFICATION OF VASCULAR DAMAGE: A UNIQUE INVESTIGATION OF STENT IMPLANTATION
Markus A. Geith, Gerhard Sommer, Thomas Schratzenstaller, Gerhard A. Holzapfel
Pages: 50 - 50
The most challenging complication after coronary stent implantation is in-stent restenosis [1], which is mainly caused by mechanically induced injuries due to overloading. From a biomechanical point of view, the processes occurring inside the arterial tissues during stent implantation (SI) is rather...
Journal: Artery Research
Conference Abstract
2.7 NON-INVASIVE EVALUATION OF END SYSTOLIC LEFT VENTRICULAR ELASTANE ACCORDING TO PRESSURE-VOLUME CURVE MODELLING DURING EJECTION IN ARTERIAL HYPERTENSION
Benjamin Bonnet, Frank Jourdan, Guilhem du Cailar, Pierre Fesler
Pages: 50 - 50
Objective: Non invasive methods have been proposed to assess end systolic left ventricular (LV) elastance (Ees), but clinical application remains complex. The aim of the present study was to 1) estimate Ees according to modeling of LV pressure-volume (P-V) curve during ejection and validate our method...
Journal: Artery Research
Conference Abstract
06.03 NITRIC OXIDE AND ENDOTHELIUM-DERIVED HYPERPOLARIZING FACTOR REGULATE THE ADAPTATION OF HUMAN CONDUIT ARTERY MECHANICS TO CHANGES IN SHEAR STRESS
J. Bellien, M. Iacob, C. Thuillez, R. Joannides
Pages: 50 - 50
Journal: Artery Research
Conference Abstract
2.2 HEART STRUCTURE AND VASCULAR FUNCTION IN YOUNG PATIENTS AFTER ENDOVASCULAR REPAIR FOR BLUNT THORACIC AORTIC INJURY
Paola Vallerio, Ilenia D’Alessio, Alessandro Maloberti, Marisa Varrenti, Simone Maggioni, Valentina Cantu, Marco Carbonaro, Maria Cristina Ferrara, Elisa Spada, Bruno Palmieri, Alfredo Lista, Cristina Giannattasio
Pages: 50 - 50
Objective: Thoracic Endovascular Aortic Repair (TEVAR) currently represents the gold standard of treatment for Blunt Thoracic Aortic Injury (BTAI). Nevertheless, there is an ongoing debate surrounding its safety and efficacy and its subsequent CV effects. The present study is aimed at assessing heart...
Journal: Artery Research
Conference Abstract
2.5 THE EFFECT OF RENAL DENERVATION ON CENTRAL BLOOD PRESSURE AND ARTERIAL STIFFNESS IN TREATMENT RESISTANT ESSENTIAL HYPERTENSION: A SUBSTUDY OF A RANDOMIZED SHAM-CONTROLLED DOUBLE-BLINDED TRIAL (THE RESET TRIAL)
Christian D. Peters, Ole N. Mathiasen, Henrik Vase, Jesper Bech, Kent L. Christensen, Anne P. Schroeder, Ole Lederballe, Hans Rickers, Ulla Kampmann, Per L. Poulsen, Sten Langfeldt, Gratien Andersen, Klavs W. Hansen, Hans E. Bøtker, Morten Engholm, Jannik B. Bertelsen, Jens F. Lassen, Erling B. Pedersen, Anne Kaltoft, Niels H. Buus
Pages: 50 - 50
Background: A recent sham-controlled trial (ReSET) showed no sustained effect of renal denervation (RDN) on 24-hour ambulatory blood pressure (24hA-BP) measurements in patients with treatment resistant hypertension.1 The aim of this substudy was to investigate, whether RDN affects central blood pressure...
Journal: Artery Research
Conference Abstract
06.02 AORTIC AND CAROTID STIFFNESS IN OLDER ADULTS. THE ROTTERDAM STUDY
F.U.S. Mattace-Raso, N.M. van Popele, A. Hofman, J.C.M. Witteman
Pages: 50 - 50
Journal: Artery Research
Conference Abstract
2.1 COGNITION IN RELATION TO THE RETINAL MICROCIRCULATION IN CHILDREN BORN PREMATURELY OR AT TERM
Fangfei Wei, Anke Raaijmakers, Zhen-Yu Zhang, Theun Pieter van Tienoven, Qi-Fang Huang, Wen-Yi Yang, Lutgarde Thijs, Harry Struijker-Boudier, Peter Verhamme, Karel Allegaert, Jan Staessen
Pages: 50 - 50
Background: The retinal microvasculature can be visualized noninvasively and mirrors the status of the cerebral vasculature. We therefore investigated in 93 prematurely born infants (birth weight < 1000 g) and 87 controls born at term whether neurocognitive performance at ∼11 years is associated with...
Journal: Artery Research
Conference Abstract
2.4 SODIUM CONSUMPTION, CENTRAL AND PERIPHERAL BLOOD PRESSURE, AND FOOD HABITS IN A POPULATION OF HEALTHY ADOLESCENTS. THE MACISTE STUDY
Giacomo Pucci, Francesca Battista, Marco D’Abbondanza, Leandro Sanesi, Giuseppe Schillaci
Pages: 50 - 50
Objective: The relationship between sodium consumption, central BP and the main dietary sources of daily sodium intake in adolescence has been poorly explored. We have evaluated sodium intake, central and peripheral BP in a population of Italian adolescents.
Methods: 401 healthy adolescents aged 17±1...
Research Article
Self-identification of Mental State and Self-control through Indirect Biofeedback – Indirect Representation and Placebo Effect
Madoka Takahara, Jilin Huang, Ivan Tanev, Katsunori Shimohara
Pages: 50 - 54
This paper describes a possible new scheme for a user with mental health problems to identify his/her own mental state and control it. For that purpose, we propose an indirect biofeedback system which represents physiological information with color and shape, and enables the user to grasp his/her inner...
Review Article
Big Data Applications in Businesses: An Overview
Raza Ur Rehman Qazi, Ali Sher
Pages: 50 - 63
Many businesses are implementing big data applications to improve efficiency and performance; and reduce costs and resource consumption. As digitization has become an integral part of everyday life, data collection has resulted in the accumulation of huge amounts of data that can be used in various beneficial...
Research Article
On implicit Lagrangian twin support vector regression by Newton method
S. Balasundaram, Deepak Gupta
Pages: 50 - 64
In this work, an implicit Lagrangian for the dual twin support vector regression is proposed. Our formulation leads to determining non-parallel –insensitive down- and up- bound functions for the unknown regressor by constructing two unconstrained quadratic programming problems of smaller size,...
Research Article
Evaluation of a Narrative Discourse Generation System Based on the Concept of “Norm and Deviation”
Taisuke Akimoto, Takashi Ogata
Pages: 50 - 53
This paper deals with the verification of a narrative discourse system. The system automatically produces a variety of discourse structures from an inputted story structure through an iterative mutual action between a narrator and narratee mechanisms. We analyze a series of generated discourse structures...
Research Article
Construction of Special Solutions for Nonintegrable Systems
Sergey Yu. Vernov
Pages: 50 - 63
The Painlev´e test is very useful to construct not only the Laurent series solutions of systems of nonlinear ordinary differential equations but also the elliptic and trigonmetric ones. The standard methods for constructing the elliptic solutions consist of two independent steps: transformation of a...
Research Article
Tunnelling in Nonlocal Evolution Equations
Giovanni Bellettini, Anna De Masi, Errico Presutti
Pages: 50 - 63
We study "tunnelling" in a one-dimensional, nonlocal evolution equation by assigning a penalty functional to orbits which deviate from solutions of the evolution equation. We discuss the variational problem of computing the minimal penalty for orbits which connect two stable, stationary solutions.
Short Communication
On Algebraic Integrability of the Deformed Elliptic CalogeroMoser Problem
L.A. Khodarinova, I.A. Prikhodski
Pages: 50 - 53
Algebraic integrability of the elliptic CalogeroMoser quantum problem related to the deformed root systems A2(2) is proved. Explicit formulae for integrals are found.
Research Article
Team Situation Awareness Using Web-based Fuzzy Group Decision Support Systems
Jie Lu, Guangquan Zhang, Fengjie Wu
Pages: 50 - 59
Situation awareness (SA) is an important element to support responses and decision making to crisis problems. Decision making for a complex situation often needs a team to work cooperatively to get consensus awareness for the situation. Team SA is characterized including information sharing, opinion...
Research Article
On the Recovery of the Free Surface from the Pressure within Periodic Traveling Water Waves
Joachim Escher, Torsten Schlurmann
Pages: 50 - 57
We present a consistent derivation of the pressure transfer function for small amplitude waves within the framework of linear wave theory and discuss some nonlinear aspects.