Laura M. Epple, Lynne Bemis, Ryan P. Cavanaugh, Anne Skope, Tehila Mayer-Sonnenfeld, Chad Frank, Christine S. Olver, Alex Lencioni, Nathaniel L. Dusto, Alona Tal, Michael Har-Noy, Kevin O. Lillehei, Emmanuel Katsanis, Michael W. Graner,
Purpose: This paper presents the treatment of a 12-year-old female spayed Great Dane who presented with vestibular signs (ataxia, nystagmus, hind end collapse). Thoracic radiographs revealed a discrete pulmonary nodule in the right cranial lung lobe. Ultrasound-guided fine needle aspirate detected primary bronchoalveolar adenocarcinoma, verified via computed tomography, with a second smaller nodule discovered in the right cranial lung lobe.Materials and methods: A lateral thoracotomy with right cranial ...
Tópico(s): Virus-based gene therapy research
2013 - Taylor & Francis | International Journal of Hyperthermia
Alona Ben‐Tal, Sophie S. Shamailov, Julian F. R. Paton,
A minimal model for the neural control of heart rate (HR) has been developed with the aim of better understanding respiratory sinus arrhythmia (RSA) – a modulation of HR at the frequency of breathing. This model consists of two differential equations and is integrated into a previously-published model of gas exchange. The heart period is assumed to be affected primarily by the parasympathetic signal, with the sympathetic signal taken as a parameter in the model. We include the baroreflex, mechanical ...
Tópico(s): Non-Invasive Vital Sign Monitoring
2014 - Elsevier BV | Mathematical Biosciences
Yaroslav I. Molkov, Natalia A. Shevtsova, Choongseok Park, Alona Ben‐Tal, Jeremy C. Smith, Jonathan Rubin, Ilya A. Rybak,
Breathing is a vital process providing the exchange of gases between the lungs and atmosphere. During quiet breathing, pumping air from the lungs is mostly performed by contraction of the diaphragm during inspiration, and muscle contraction during expiration does not play a significant role in ventilation. In contrast, during intense exercise or severe hypercapnia forced or active expiration occurs in which the abdominal "expiratory" muscles become actively involved in breathing. The mechanisms of ...
Tópico(s): Respiratory Support and Mechanisms
2014 - Public Library of Science | PLoS ONE
Alona Ben‐Tal, Merryn H. Tawhai,
Mathematical models have been central to understanding the interaction between neural control and breathing. Models of the entire respiratory system—which comprises the lungs and the neural circuitry that controls their ventilation—have been derived using simplifying assumptions to compartmentalize each component of the system and to define the interactions between components. These full system models often rely—through necessity—on empirically derived relationships or parameters, in addition to ...
Tópico(s): Respiratory Support and Mechanisms
2013 - Wiley | WIREs Systems Biology and Medicine
Maja Elstad, Erin L. O’Callaghan, Alexander Smith, Alona Ben‐Tal, Rohit Ramchandra,
The cardiorespiratory system exhibits oscillations from a range of sources. One of the most studied oscillations is heart rate variability, which is thought to be beneficial and can serve as an index of a healthy cardiovascular system. Heart rate variability is dampened in many diseases including depression, autoimmune diseases, hypertension, and heart failure. Thus, understanding the interactions that lead to heart rate variability, and its physiological role, could help with prevention, diagnosis, ...
Tópico(s): Non-Invasive Vital Sign Monitoring
2018 - American Physical Society | AJP Heart and Circulatory Physiology
Emily P. Harvey, Alona Ben‐Tal,
Avian lungs are remarkably different from mammalian lungs in that air flows unidirectionally through rigid tubes in which gas exchange occurs. Experimental observations have been able to determine the pattern of gas flow in the respiratory system, but understanding how the flow pattern is generated and determining the factors contributing to the observed dynamics remains elusive. It has been hypothesized that the unidirectional flow is due to aerodynamic valving during inspiration and expiration, ...
Tópico(s): Physiological and biochemical adaptations
2016 - Public Library of Science | PLoS Computational Biology
Alona Ben‐Tal, Sophie S. Shamailov, Julian F. R. Paton,
We conducted a theoretical study of the physiological significance of respiratory sinus arrhythmia (RSA), a phenomenon used as an index of cardiac vagal tone and wellbeing, whereby the heart rate (HR) increases during inspiration and decreases during expiration. We first tested the hypothesis that RSA improves gas exchange efficiency but found that although gas exchange efficiency improved with slow and deep breathing and with increased mean heart rate, this was unrelated to RSA. We then formulated ...
Tópico(s): Advanced Chemical Sensor Technologies
2012 - Wiley | The Journal of Physiology
Abstract The operation and regulation of the lungs and the heart are closely related. This is evident when examining the anatomy within the thorax cavity, in the brainstem and in the aortic and carotid arteries where chemoreceptors and baroreceptors, which provide feedback affecting the regulation of both organs, are concentrated. This is also evident in phenomena such as respiratory sinus arrhythmia where the heart rate increases during inspiration and decreases during expiration, in other types ...
Tópico(s): Circadian rhythm and melatonin
2011 - Wiley | WIREs Systems Biology and Medicine
... Elstad, Erin L. O’Callaghan, Alex J. Smith, Alona Ben-Tal, and Rohit Ramchandra1 July 2018 | American Journal of ...
Tópico(s): Cardiac electrophysiology and arrhythmias
2009 - American Physiological Society | Journal of Applied Physiology
Alona Ben‐Tal, Jeffrey C. Smith,
We use a recently developed mathematical model that integrates a reduced representation of the brainstem respiratory neural controller together with peripheral gas exchange and transport to study numerically the dynamic response of the respiratory system to several physiological stimuli. We compare between the system responses with two major sources of delay: circulatory transport vs. neural feedback dynamics, and we show that the dynamics of the neural feedback processes dictates the dynamic response ...
Tópico(s): Respiratory Support and Mechanisms
2009 - Elsevier BV | Respiratory Physiology & Neurobiology
Alona Ben‐Tal, Jeffrey C. Smith,
A new model for aspects of the control of respiration in mammals has been developed. The model integrates a reduced representation of the brainstem respiratory neural controller together with peripheral gas exchange and transport mechanisms. The neural controller consists of two components. One component represents the inspiratory oscillator in the pre-Bötzinger complex (pre-BötC) incorporating biophysical mechanisms for rhythm generation. The other component represents the ventral respiratory group ( ...
Tópico(s): Sleep and Wakefulness Research
2008 - Elsevier BV | Journal of Theoretical Biology
... Elstad, Erin L. O’Callaghan, Alex J. Smith, Alona Ben-Tal, and Rohit Ramchandra1 July 2018 | American Journal of ...
Tópico(s): Cardiovascular Syncope and Autonomic Disorders
2008 - American Physiological Society | Journal of Applied Physiology
This paper presents a hierarchy of models with increasing complexity for gas exchange in the human lungs. The models span from a single compartment, inflexible lung to a single compartment, flexible lung with pulmonary gas exchange. It is shown how the models are related to well-known models in the literature. A long-term purpose of this work is to study nonlinear phenomena seen in the cardio-respiratory system (for example, synchronization between ventilation rate and heart rate, and Cheyne-Stokes ...
Tópico(s): Atomic and Subatomic Physics Research
2005 - Elsevier BV | Journal of Theoretical Biology
Abstract This paper is concerned with a class of symmetric forced oscillators modeled by nonlinear ordinary differential equations. The forced Duffing oscillator and the forced pendulum belong to this class of oscillators. Another example is found in an electric power system and is associated with a phenomenon known as ferroresonance. Solutions for this class of systems can be symmetric or non-symmetric. Sometimes, as a physical parameter is varied, solutions lose or gain the symmetry at a bifurcation ...
Tópico(s): Quantum chaos and dynamical systems
2002 - Elsevier BV | Physica D Nonlinear Phenomena
Alona Ben‐Tal, Vivien Kirk, G.C. Wake,
This paper focuses on one aspect of ferroresonance in power systems, i.e., the appearance of a strange attractor with a band-like structure. This attractor was called a "pseudoperiodic" attractor in a previous paper where the phenomenon was first reported. It was found in this study that banded chaos arises from a sequence of period doubling bifurcations. Odd-subharmonics undergo a symmetry-breaking bifurcation before the period doubling cascade takes place. A theoretical discussion of symmetry-breaking ...
Tópico(s): Vibration and Dynamic Analysis
2001 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Power Delivery
Alona Ben‐Tal, D. Shein, S. Zissu,
An approach for finding ferroresonance occurrence domains has been developed. The steady state solutions are calculated by the Galerkin method and a bifurcation diagram is created using a continuation method. By using the proposed approach, continuous and well defined domains can be found. A study of two actual systems is introduced and experimental and computational results are shown.
Tópico(s): Power Transformer Diagnostics and Insulation
1999 - Elsevier BV | Electric Power Systems Research
I. Ninomiya, Naoko Nisimaru, Hiroshi Irisawa,
... Elstad, Erin L. O'Callaghan, Alex J. Smith, Alona Ben-Tal, and Rohit Ramchandra1 July 2018 | American Journal of ...
Tópico(s): Non-Invasive Vital Sign Monitoring
1971 - American Physiological Society | American Journal of Physiology-Legacy Content
P. G. Katona, JW Poitras, GO Barnett, BS Terry,
... Elstad, Erin L. O’Callaghan, Alex J. Smith, Alona Ben-Tal, and Rohit Ramchandra1 July 2018 | American Journal of ...
Tópico(s): Neuroscience of respiration and sleep
1970 - American Physiological Society | American Journal of Physiology-Legacy Content
Alona Ben‐Tal, L. Kerzner, S. Zlobec,
Abstract This paper gives characterization of optimal Solutions for convex semiinfinite programming problems. These characterizations are free of a constraint qualification assumption. Thus they overcome the deficiencies of the semiinfinite versions of the Fritz John and the Kuhn‐Tucker theories, which give only necessary or sufficient conditions for optimality, but not both.
Tópico(s): Advanced Topology and Set Theory
1980 - Wiley | Naval Research Logistics Quarterly
Alona Ben‐Tal, P. Bar‐Yoseph, Henryk Flashner,
A new computational approach to modelling and control of a flexible beam is proposed. The structural modelling and the control design problems are formulated in a unified mathematical framework that allows simultaneous structural and control design iterations that result in an optimal overall system performance. The method employs the space–time spectral elements for simultaneous space and time discretizations of a Timoshenko beam model. Dimensionless equations of motion are derived using Hamilton' ...
Tópico(s): Numerical methods for differential equations
1996 - Wiley | International Journal for Numerical Methods in Engineering
Alona Weinstock, Tal Oron-Gilad, Yisrael Parmet,
Lack of system reliability has been repeatedly identified as a factor that decreases trust. However, aesthetics has an important role in the development of trust. Most of the research concerning the connection between aesthetics and trust focused on mobile commerce and websites while very little has been done in examining aesthetics in automated systems. This study integrated aesthetics manipulations into an imperfect in-vehicle automation system and focused on the power of aesthetics to decrease ...
Tópico(s): Human-Automation Interaction and Safety
2012 - IOS Press | Work
Norman H. Nie, Kristi Andersen,
... 314.https://doi.org/10.1080/15295039409366904Daniel Bar-Tal, Alona Raviv, Tali Freund An Anatomy of Political Beliefs: ...
Tópico(s): Religion and Society Interactions
1974 - University of Chicago Press | The Journal of Politics
Daniel Bar‐Tal, Alona Raviv, Marta Goldberg,
BAR-TAL, DANIEL; RAVIV, ALONA; and GOLDBERG, MARTA. Helping Behavior among Preschool Children: An Observational Study. CHILD DEVELOPMENT, 1982, 53, 396-402. ...
Tópico(s): Child Development and Digital Technology
1982 - Wiley | Child Development
Alona Ben‐Tal, Yunjiao Wang, Maria C. A. Leite,
Abstract The respiratory rhythm generator is spectacular in its ability to support a wide range of activities and adapt to changing environmental conditions, yet its operating mechanisms remain elusive. We show how selective control of inspiration and expiration times can be achieved in a new representation of the neural system (called a Boolean network). The new framework enables us to predict the behavior of neural networks based on properties of neurons, not their values. Hence, it reveals the ...
Tópico(s): Sleep and Wakefulness Research
2019 - Nature Portfolio | Scientific Reports
Merryn H. Tawhai, Alona Ben‐Tal,
Tópico(s): Quantum, superfluid, helium dynamics
2004 - Springer Nature | Cardiovascular Engineering An International Journal
Arie W. Kruglanski, Amiram Raviv, Daniel Bar‐Tal, Alona Raviv, Keren Sharvit, Shmuel Ellis, Ruth Bar, Antonio Pierro, Lucia Mannetti,
Tópico(s): Educational Strategies and Epistemologies
2005 - Elsevier BV | Advances in experimental social psychology
Amiram Raviv, Daniel Bar‐Tal, Alona Raviv, Asaf Ben-Horin,
Tópico(s): Sports, Gender, and Society
1996 - Springer Science+Business Media | Journal of Youth and Adolescence
Daniel Bar‐Tal, Alona Raviv, Tali Freund,
The present study is a simultaneous investigation of the contents of political beliefs and their characteristics among Israeli students. In addition, it examines their perceived use of information sources. The results indicate that political beliefs regarding the Israeli‐Arab conflicts are organized systematically around the dove/hawk dimension. Also, a positive relationship was found between centrality of beliefs and confidence in them; between well‐defined political identification and centrality ...
Tópico(s): Terrorism, Counterterrorism, and Political Violence
1994 - Wiley | Journal of Applied Social Psychology
Amiram Raviv, Daniel Bar‐Tal, Alona Raviv, Reuven Abin,
Two studies assessed the perception of epistemic authority (denoting a source of information which has a determinative influence on the acquisition of knowledge) by means of a scale (Epistemic Authority Scale) which was constructed for this purpose. The first study showed that individuals perceive political leaders with similar political orientations as greater epistemic authorities than political leaders with different political orientations. In addition, the study investigated the reasons used by ...
Tópico(s): Evaluation of Teaching Practices
1993 - SAGE Publishing | European Journal of Personality
Amiram Raviv, Daniel Bar‐Tal, Alona Raviv, Daniela Peleg,
Tópico(s): Science Education and Pedagogy
1990 - Springer Science+Business Media | Journal of Youth and Adolescence