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Article: Dispersion of free-falling saliva droplets by two-dimensional vortical flows.

Avni, Orr / Dagan, Yuval

Theoretical and computational fluid dynamics

2022 Volume 36, Issue 6, Page(s) 993–1011

Language	English
Publishing date	2022-11-05
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1463179-9
ISSN	1432-2250 ; 0935-4964
ISSN (online)	1432-2250
ISSN	0935-4964
DOI	10.1007/s00162-022-00633-y
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Article ; Online: Enhanced Nonlinear Response by Manipulating the Dirac Point at the (111) LaTiO_{3}/SrTiO_{3} Interface.

Tuvia, G / Burshtein, A / Silber, I / Aharony, A / Entin-Wohlman, O / Goldstein, M / Dagan, Y

Physical review letters

2024 Volume 132, Issue 14, Page(s) 146301

Abstract: Tunable spin-orbit interaction (SOI) is an important feature for future spin-based devices. In the presence of a magnetic field, SOI induces an asymmetry in the energy bands, which can produce nonlinear transport effects (V∼I^{2}). Here, we focus on such ...

Abstract	Tunable spin-orbit interaction (SOI) is an important feature for future spin-based devices. In the presence of a magnetic field, SOI induces an asymmetry in the energy bands, which can produce nonlinear transport effects (V∼I^{2}). Here, we focus on such effects to study the role of SOI in the (111) LaTiO_{3}/SrTiO_{3} interface. This system is a convenient platform for understanding the role of SOI since it exhibits a single-band Hall response through the entire gate-voltage range studied. We report a pronounced rise in the nonlinear longitudinal resistance at a critical in-plane field H_{cr}. This rise disappears when a small out-of-plane field component is present. We explain these results by considering the location of the Dirac point formed at the crossing of the spin-split energy bands. An in-plane magnetic field pushes this point outside of the Fermi contour, and consequently changes the symmetry of the Fermi contours and intensifies the nonlinear transport. An out-of-plane magnetic field opens a gap at the Dirac point, thereby significantly diminishing the nonlinear effects. We propose that magnetoresistance effects previously reported in interfaces with SOI could be comprehended within our suggested scenario.
Language	English
Publishing date	2024-04-19
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.132.146301
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Article ; Online: Respiration-triggered olfactory stimulation reduces obstructive sleep apnea severity: A prospective pilot study.

Perl, Ofer / Kemer, Lilach / Green, Amit / Arish, Nissim / Corcos, Yael / Arzi, Anat / Dagan, Yaron

Journal of sleep research

2024 , Page(s) e14236

Abstract: Obstructive sleep apnea is a prevalent sleep-disordered breathing condition characterized by repetitive reduction in breathing during sleep. The current care standard for obstructive sleep apnea is continuous positive air pressure devices, often ... ...

Abstract	Obstructive sleep apnea is a prevalent sleep-disordered breathing condition characterized by repetitive reduction in breathing during sleep. The current care standard for obstructive sleep apnea is continuous positive air pressure devices, often suffering from low tolerance due to limited adherence. Capitalizing on the unique neurocircuitry of olfactory perception and its retained function during sleep, we conducted a pilot study to test transient, respiration-based olfactory stimulation as a treatment for obstructive sleep apnea markers. Thirty-two patients with obstructive sleep apnea (apnea-hypopnea index ≥ 15 events per hr) underwent two polysomnography sessions, "Odour" and "Control", in random order. In "Odour" nights, patients were presented with transient respiratory-based olfactory stimulation delivered via a computer-controlled commercial olfactometer (Scentific). The olfactometer, equipped with a wireless monitoring, analysed respiratory patterns and presented odour upon detection of respiratory events. No odours were presented in "Control" nights. Following exclusions, 17 patients entered the analysis (four women, 47.4 (10.5) years, body mass index: 29.4 (6.3) kg m
Language	English
Publishing date	2024-05-13
Publishing country	England
Document type	Journal Article
ZDB-ID	1122722-9
ISSN	1365-2869 ; 0962-1105
ISSN (online)	1365-2869
ISSN	0962-1105
DOI	10.1111/jsr.14236
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Article: Comparing in-lab full polysomnography for diagnosing sleep apnea in children to home sleep apnea tests (HSAT) with an online video attending technician.

Green, Amit / Nagel, Noam / Kemer, Lilach / Dagan, Yaron

Sleep and biological rhythms

2022 Volume 20, Issue 3, Page(s) 397–401

Abstract: The main study aim was to compare the validity of children sleep apnea data obtained from standard polysomnography (PSG) to a home sleep apnea test (HSAT) accompanied by an attending online video technician. Our study population was comprised of 100 ... ...

Abstract	The main study aim was to compare the validity of children sleep apnea data obtained from standard polysomnography (PSG) to a home sleep apnea test (HSAT) accompanied by an attending online video technician. Our study population was comprised of 100 children, 54 boys and 46 girls, ages 3-11 (average age 5.2, SD 1.2) assigned randomly either to in-lab full PSG or to a HSAT with real-time, online technical support to rule out obstructive sleep apnea (OSA). A
Language	English
Publishing date	2022-03-12
Publishing country	Japan
Document type	Journal Article
ZDB-ID	2185804-4
ISSN	1479-8425 ; 1446-9235
ISSN (online)	1479-8425
ISSN	1446-9235
DOI	10.1007/s41105-022-00384-7
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Article ; Online: Two-component nematic superconductivity in 4Hb-TaS

Silber, I / Mathimalar, S / Mangel, I / Nayak, A K / Green, O / Avraham, N / Beidenkopf, H / Feldman, I / Kanigel, A / Klein, A / Goldstein, M / Banerjee, A / Sela, E / Dagan, Y

Nature communications

2024 Volume 15, Issue 1, Page(s) 824

Abstract: Most superconductors have an isotropic, single component order parameter and are well described by the standard (BCS) theory for superconductivity. Unconventional, multiple-component superconductors are exceptionally rare and are much less understood. ... ...

Abstract	Most superconductors have an isotropic, single component order parameter and are well described by the standard (BCS) theory for superconductivity. Unconventional, multiple-component superconductors are exceptionally rare and are much less understood. Here, we combine scanning tunneling microscopy and angle-resolved macroscopic transport for studying the candidate chiral superconductor, 4Hb-TaS
Language	English
Publishing date	2024-01-27
Publishing country	England
Document type	Journal Article
ZDB-ID	2553671-0
ISSN	2041-1723 ; 2041-1723
ISSN (online)	2041-1723
ISSN	2041-1723
DOI	10.1038/s41467-024-45169-3
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Article ; Online: Response to Letter Regarding the Dagan and Yager Article.

Yager, Joel / Dagan, Yael

The Journal of nervous and mental disease

2020 Volume 208, Issue 11, Page(s) 912

Language	English
Publishing date	2020-11-17
Publishing country	United States
Document type	Letter
ZDB-ID	3020-x
ISSN	1539-736X ; 0022-3018
ISSN (online)	1539-736X
ISSN	0022-3018
DOI	10.1097/NMD.0000000000001216
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Article ; Online: Cannabis and Complex Posttraumatic Stress Disorder: A Narrative Review With Considerations of Benefits and Harms.

Dagan, Yael / Yager, Joel

The Journal of nervous and mental disease

2020 Volume 208, Issue 8, Page(s) 619–627

Abstract: Despite substantial controversies concerning patients' reports of benefits from cannabis for posttraumatic stress disorder (PTSD) and inconsistent research findings regarding its efficacy and adverse risks, some states have already recognized PTSD as a ... ...

Abstract	Despite substantial controversies concerning patients' reports of benefits from cannabis for posttraumatic stress disorder (PTSD) and inconsistent research findings regarding its efficacy and adverse risks, some states have already recognized PTSD as a qualifying condition for medical cannabis. Consequently, medical cannabis can also be provided for patients with complex PTSD who experience additional posttraumatic symptoms of affective dysregulation, negative perception of the self, and difficulties in relationships due to a history of repetitive trauma. In this article, we explore cannabis use in relation to benefits versus harms that might occur relative to specific complex PTSD symptoms and comorbidities. Whereas some symptoms related to PTSD per se (e.g., anxiety, insomnia, nightmares) may be benefited, others that are more characteristic of complex PTSD (e.g., dissociation, reckless behavior, and substance abuse associated with dysregulated affect) may be aggravated. Therefore, clinicians treating patients with complex PTSD who use or seek cannabis should carefully assess patients' motivations and the impacts of particular use patterns on specific symptoms. Clinicians and patients should be aware of and fully discuss the significant number of potential adverse effects of cannabis use, several of which might impede patients' participation in beneficial psychotherapeutic, social, and medical interventions.
MeSH term(s)	Adult ; Comorbidity ; Female ; Humans ; Male ; Medical Marijuana/adverse effects ; Medical Marijuana/therapeutic use ; Psychotherapy ; Stress Disorders, Post-Traumatic/drug therapy ; Stress Disorders, Post-Traumatic/therapy
Chemical Substances	Medical Marijuana
Language	English
Publishing date	2020-05-20
Publishing country	United States
Document type	Case Reports ; Journal Article ; Review
ZDB-ID	3020-x
ISSN	1539-736X ; 0022-3018
ISSN (online)	1539-736X
ISSN	0022-3018
DOI	10.1097/NMD.0000000000001172
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Book ; Online: From External to Swap Regret 2.0

Dagan, Yuval / Daskalakis, Constantinos / Fishelson, Maxwell / Golowich, Noah

An Efficient Reduction and Oblivious Adversary for Large Action Spaces

2023

Abstract: We provide a novel reduction from swap-regret minimization to external-regret minimization, which improves upon the classical reductions of Blum-Mansour [BM07] and Stolz-Lugosi [SL05] in that it does not require finiteness of the space of actions. We ... ...

Abstract	We provide a novel reduction from swap-regret minimization to external-regret minimization, which improves upon the classical reductions of Blum-Mansour [BM07] and Stolz-Lugosi [SL05] in that it does not require finiteness of the space of actions. We show that, whenever there exists a no-external-regret algorithm for some hypothesis class, there must also exist a no-swap-regret algorithm for that same class. For the problem of learning with expert advice, our result implies that it is possible to guarantee that the swap regret is bounded by {\epsilon} after $\log(N)^{O(1/\epsilon)}$ rounds and with $O(N)$ per iteration complexity, where $N$ is the number of experts, while the classical reductions of Blum-Mansour and Stolz-Lugosi require $O(N/\epsilon^2)$ rounds and at least $\Omega(N^2)$ per iteration complexity. Our result comes with an associated lower bound, which -- in contrast to that in [BM07] -- holds for oblivious and $\ell_1$-constrained adversaries and learners that can employ distributions over experts, showing that the number of rounds must be $\tilde\Omega(N/\epsilon^2)$ or exponential in $1/\epsilon$. Our reduction implies that, if no-regret learning is possible in some game, then this game must have approximate correlated equilibria, of arbitrarily good approximation. This strengthens the folklore implication of no-regret learning that approximate coarse correlated equilibria exist. Importantly, it provides a sufficient condition for the existence of correlated equilibrium which vastly extends the requirement that the action set is finite, thus answering a question left open by [DG22; Ass+23]. Moreover, it answers several outstanding questions about equilibrium computation and learning in games.
Keywords	Computer Science - Machine Learning ; Computer Science - Artificial Intelligence ; Computer Science - Computer Science and Game Theory
Subject code	005
Publishing date	2023-10-30
Publishing country	us
Document type	Book ; Online
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Article ; Online: Addressing Loneliness in Complex PTSD.

Dagan, Yael / Yager, Joel

The Journal of nervous and mental disease

2019 Volume 207, Issue 6, Page(s) 433–439

Abstract: Loneliness impacts both physical and psychological health and is associated with increases of all-cause mortality and suicidal behavior. Because loneliness may result from a variety of developmental, interpersonal, and intrapersonal factors, ... ...

Abstract	Loneliness impacts both physical and psychological health and is associated with increases of all-cause mortality and suicidal behavior. Because loneliness may result from a variety of developmental, interpersonal, and intrapersonal factors, distinguishing its components, origins, and sustaining factors as it manifests in various psychopathological states are important steps in formulating interventions to alleviate these conditions. To date, loneliness has not been widely studied in relation to complex posttraumatic stress disorder (PTSD), which is newly delineated in the International Classification of Diseases, characterized by PTSD symptoms in the context of significant early trauma, as well as "disturbances in self-organization" marked by affective dysregulation, negative self-concept, and disturbances in relationships. In this article, illustrating with case material, we suggest that loneliness plays a major role in the development of complex PTSD and in the preservation of its symptoms. Consequently, therapies for complex PTSD should include interventions that address loneliness.
MeSH term(s)	Adult ; Adult Survivors of Child Abuse ; Depressive Disorder, Major/physiopathology ; Female ; Humans ; Loneliness ; Male ; Psychotherapy ; Stress Disorders, Post-Traumatic/etiology ; Stress Disorders, Post-Traumatic/physiopathology ; Stress Disorders, Post-Traumatic/therapy ; Suicide ; Young Adult
Language	English
Publishing date	2019-05-09
Publishing country	United States
Document type	Case Reports ; Journal Article
ZDB-ID	3020-x
ISSN	1539-736X ; 0022-3018
ISSN (online)	1539-736X
ISSN	0022-3018
DOI	10.1097/NMD.0000000000000992
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Article ; Online: Gender differences in the sleep variables contributing to excessive daytime sleepiness among patients with obstructive sleep apnea.

Honig, Eliya / Green, Amit / Dagan, Yaron

Sleep & breathing = Schlaf & Atmung

2021 Volume 25, Issue 4, Page(s) 1837–1842

Abstract: Purpose: Excessive daytime sleepiness (EDS) is a main symptom in patients with obstructive sleep apnea (OSA); however, patients with OSA have significant variability in their reported EDS which cannot be fully explained by the apnea-hypopnea index (AHI). ...

Abstract	Purpose: Excessive daytime sleepiness (EDS) is a main symptom in patients with obstructive sleep apnea (OSA); however, patients with OSA have significant variability in their reported EDS which cannot be fully explained by the apnea-hypopnea index (AHI). The purpose of this study was to investigate gender differences regarding the sleep test variables contributing to excessive daytime sleepiness. Methods: Retrospective study of 578 men and 270 women with suspected OSA who underwent home overnight sleep test. We assessed the correlation between sleep test variables and EDS, using the Epworth Sleepiness Scale (ESS). Results: Among the group of men, correlation was found between ESS to BMI (r = .107, p = .010), AHI (r = .158, p < .001), number of apneas (r = .129, p = .002), number of hypopneas (r = .115, p = .006), number of blood oxygen desaturations (r = .145, p < .001), and percent of time the blood oxygen saturation was under 90% (r = .130, p = .002). However, among the group of women, no significant correlation was found between any of the sleep test parameters or BMI to ESS. Among the group of women, a negative correlation was found between age and EDS (r = - .208, p < .001). Conclusion: Men showed correlations between sleep test variables and EDS, while women did not show such correlations. The results suggest that men's sleepiness is more influenced by OSA and sleep variables compared to women. To our knowledge, this is the first study which shows difference between genders in the influence of sleep variables and OSA on EDS.
MeSH term(s)	Adult ; Aged ; Disorders of Excessive Somnolence/etiology ; Disorders of Excessive Somnolence/physiopathology ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Sex Factors ; Sleep Apnea, Obstructive/complications ; Sleep Apnea, Obstructive/physiopathology
Language	English
Publishing date	2021-01-19
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1500381-4
ISSN	1522-1709 ; 1520-9512
ISSN (online)	1522-1709
ISSN	1520-9512
DOI	10.1007/s11325-020-02276-x
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