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  1. Article ; Online: Sensory feedback expands dynamic complexity and aids in robustness against noise.

    White, Alexander J

    Biological cybernetics

    2022  Volume 116, Issue 3, Page(s) 267–269

    Abstract: It has been hypothesized that sensory feedback is a critical component in determining the functionality of a central pattern generator. To test this, Yu and Thomas's recent work Yu and Thomas (Biol Cybern 115(2):135-160, 2021) built a model of a half- ... ...

    Abstract It has been hypothesized that sensory feedback is a critical component in determining the functionality of a central pattern generator. To test this, Yu and Thomas's recent work Yu and Thomas (Biol Cybern 115(2):135-160, 2021) built a model of a half-center oscillator coupled to a simple muscular model with sensory feedback. They showed that sensory feedback increases robustness against external noise, while simultaneously expanding the potential repertoire of functions the half-center oscillator can perform. However, they show that this comes at the cost of robustness against internal noise.
    MeSH term(s) Feedback ; Feedback, Sensory
    Language English
    Publishing date 2022-01-04
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 220699-7
    ISSN 1432-0770 ; 0340-1200
    ISSN (online) 1432-0770
    ISSN 0340-1200
    DOI 10.1007/s00422-021-00917-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1279: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Book: Prolonged critical illness

    White, Alexander C.

    management of long-term acute care

    (Clinics in chest medicine ; 22,1)

    2001  

    Author's details Alexander C. White ..., guest ed
    Series title Clinics in chest medicine ; 22,1
    Collection
    Language English
    Size XIV, 223 S. : Ill., graph. Darst.
    Publisher Saunders
    Publishing place Philadelphia u.a.
    Publishing country United States
    Document type Book
    HBZ-ID HT012999603
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    Se 805 -22,1- verfügbar in Königswinter Königswinter

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  3. Article ; Online: Deep learning in deep time.

    White, Alexander E

    Proceedings of the National Academy of Sciences of the United States of America

    2020  Volume 117, Issue 47, Page(s) 29268–29270

    MeSH term(s) Deep Learning ; Fossils ; Microscopy ; Neural Networks, Computer ; Pollen
    Language English
    Publishing date 2020-11-09
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2020870117
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1148: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  4. Article ; Online: Stochastic and mixed density functional theory within the projector augmented wave formalism for simulation of warm dense matter.

    Sharma, Vidushi / Collins, Lee A / White, Alexander J

    Physical review. E

    2023  Volume 108, Issue 2, Page(s) L023201

    Abstract: Stochastic density functional theory (DFT) and mixed stochastic-deterministic DFT are burgeoning approaches for the calculation of the equation of state and transport properties in materials under extreme conditions. In the intermediate warm dense matter ...

    Abstract Stochastic density functional theory (DFT) and mixed stochastic-deterministic DFT are burgeoning approaches for the calculation of the equation of state and transport properties in materials under extreme conditions. In the intermediate warm dense matter regime, a state between correlated condensed matter and kinetic plasma, electrons can range from being highly localized around nuclei to delocalized over the whole simulation cell. The plane-wave basis pseudopotential approach is thus the typical tool of choice for modeling such systems at the DFT level. Unfortunately, stochastic DFT methods scale as the square of the maximum plane-wave energy in this basis. To reduce the effect of this scaling and improve the overall description of the electrons within the pseudopotential approximation, we present stochastic and mixed DFT approaches developed and implemented within the projector augmented wave formalism. We compare results between the different DFT approaches for both single-point and molecular dynamics trajectories and present calculations of self-diffusion coefficients of solid density carbon from 1 to 50 eV.
    Language English
    Publishing date 2023-09-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2844562-4
    ISSN 2470-0053 ; 2470-0045
    ISSN (online) 2470-0053
    ISSN 2470-0045
    DOI 10.1103/PhysRevE.108.L023201
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Development of prehospital emergency care in Singapore.

    Nadarajan, Gayathri Devi / Jalil, Nurul Asyikin Binte Mohamed / White, Alexander Elgin / Hock, Marcus Ong Eng / Venkataraman, Anantharaman

    International journal of emergency medicine

    2024  Volume 17, Issue 1, Page(s) 11

    Abstract: This review paper describes the development of the pre-hospital system in Singapore from the pre-war days. Every country's prehospital community needs a deep understanding of how they developed over the years, factors that played a part, and the ... ...

    Abstract This review paper describes the development of the pre-hospital system in Singapore from the pre-war days. Every country's prehospital community needs a deep understanding of how they developed over the years, factors that played a part, and the aspirations their community and government have set for this. This can guide future evolution of the services to ensure that care provided is relevant, applicable and in keeping with the community's needs. Countries with similar contextual circumstances, but at a different stage of development of their PECs, may learn from these.
    Language English
    Publishing date 2024-01-22
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2411462-5
    ISSN 1865-1380 ; 1865-1372
    ISSN (online) 1865-1380
    ISSN 1865-1372
    DOI 10.1186/s12245-023-00582-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Aortoenteric fistula following endovascular abdominal aortic aneurysm repair.

    White, Alexander B / Coffey, Dale D / Barzana, Daniel C

    Journal of vascular surgery cases and innovative techniques

    2022  Volume 8, Issue 3, Page(s) 438–440

    Abstract: Aortoenteric fistula is a rare complication after endovascular stent grafting. In the present report, we have described the case of a 69-year-old man 3 years after endovascular repair of an abdominal aortic aneurysm who had presented with worsening back ... ...

    Abstract Aortoenteric fistula is a rare complication after endovascular stent grafting. In the present report, we have described the case of a 69-year-old man 3 years after endovascular repair of an abdominal aortic aneurysm who had presented with worsening back pain and fever. Computed tomography had demonstrated dilated bowel and a thickened aortic wall, with air foci within the native aneurysm sac. He underwent emergent right axillary-bifemoral bypass with explantation of the aortic endograft and primary repair of the duodenal fistula. Tissue cultures grew
    Language English
    Publishing date 2022-07-06
    Publishing country United States
    Document type Case Reports
    ISSN 2468-4287
    ISSN 2468-4287
    DOI 10.1016/j.jvscit.2022.06.003
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  7. Book ; Online: Stochastic and Mixed Density Functional Theory within the projector augmented wave formalism for the simulation of warm dense matter

    Sharma, Vidushi / Collins, Lee A. / White, Alexander J.

    2023  

    Abstract: Stochastic and mixed stochastic-deterministic density functional theory (DFT) are promising new approaches for the calculation of the equation-of-state and transport properties in materials under extreme conditions. In the intermediate warm dense matter ... ...

    Abstract Stochastic and mixed stochastic-deterministic density functional theory (DFT) are promising new approaches for the calculation of the equation-of-state and transport properties in materials under extreme conditions. In the intermediate warm dense matter regime, a state between correlated condensed matter and kinetic plasma, electrons can range from being highly localized around nuclei to delocalized over the whole simulation cell. The plane-wave basis pseudo-potential approach is thus the typical tool of choice for modeling such systems at the DFT level. Unfortunately, the stochastic DFT methods scale as the square of the maximum plane-wave energy in this basis. To reduce the effect of this scaling, and improve the overall description of the electrons within the pseudo-potential approximation, we present stochastic and mixed DFT developed and implemented within the projector augmented wave formalism. We compare results between the different DFT approaches for both single-point and molecular dynamics trajectories and present calculations of self-diffusion coefficients of solid density carbon from 1 to 50 eV.
    Keywords Physics - Computational Physics ; Condensed Matter - Materials Science ; Physics - Plasma Physics
    Subject code 541
    Publishing date 2023-01-27
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: (with research data) Geographical Barriers and Dispersal Propensity Interact to Limit Range Expansions of Himalayan Birds.

    White, Alexander E

    The American naturalist

    2016  Volume 188, Issue 1, Page(s) 99–112

    Abstract: Range expansions are limited by two key factors. These are (1) dispersal, which includes a species' intrinsic mobility, geographical barriers, and their interaction; and (2) the ability of a species to persist beyond its current range. I evaluate the ... ...

    Abstract Range expansions are limited by two key factors. These are (1) dispersal, which includes a species' intrinsic mobility, geographical barriers, and their interaction; and (2) the ability of a species to persist beyond its current range. I evaluate the role of these in affecting bird species distributions across the Himalayas, under a hypothesis that many species have recently expanded their range out of an eastern Pleistocene refuge. I measured wing shape as a proxy for dispersal ability and topographic complexity across the Himalayas as a proxy for dispersal barriers. As a factor affecting the potential for persistence in novel locations, I compared similarity of a species' climatic envelope in the east, the hypothesized historical refuge, and the west, the location of recent colonization. Climatic similarity, wing shape, and the interaction of topographic complexity with wing shape all contribute significantly to the range extent of a given species. The result highlights the important interaction between morphological and landscape factors in affecting successful range expansions. The two dispersal-related parameters together explain two times the variance explained by climate, but I present additional evidence that other factors besides climate-notably biotic interactions-affect the ability of a species to persist beyond its range.
    MeSH term(s) Animal Distribution ; Animals ; Birds ; Environment ; Geography ; Wings, Animal/anatomy & histology
    Language English
    Publishing date 2016-07
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 207092-3
    ISSN 1537-5323 ; 0003-0147
    ISSN (online) 1537-5323
    ISSN 0003-0147
    DOI 10.1086/686890
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 71/723: Show issues

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  9. Article: Anesthesia for minimally invasive cardiac surgery.

    White, Alexander / Patvardhan, Chinmay / Falter, Florian

    Journal of thoracic disease

    2021  Volume 13, Issue 3, Page(s) 1886–1898

    Abstract: Due to its potential benefits and increased patient satisfaction minimal invasive cardiac surgery (MICS) is rapidly gaining in popularity. These procedures are not without challenges and require careful planning, pre-operative patient assessment and ... ...

    Abstract Due to its potential benefits and increased patient satisfaction minimal invasive cardiac surgery (MICS) is rapidly gaining in popularity. These procedures are not without challenges and require careful planning, pre-operative patient assessment and excellent intraoperative communication. Assessment of patient suitability for MICS by a multi-disciplinary team during pre-operative workup is desirable. MICS requires additional skills that many might not consider to be part of the standard cardiac anesthetic toolkit. Anesthetists involved in MICS need not only be highly skilled in performing transesophageal echocardiography (TEE) but need to be proficient in multimodal analgesia, including locoregional or neuroaxial techniques. MICS procedures tend to cause more postoperative pain than standard median sternotomies do, and patients need analgesic management more in keeping with thoracic operations. Ultrasound guided peripheral regional anesthesia techniques like serratus anterior block can offer an advantage over neuroaxial techniques in patients on anti-platelet therapy or anticoagulation with low molecular weight or unfractionated heparin The article reviews the salient points pertaining to pre-operative assessment and suitability, intraoperative process and postoperative management of minimally invasive cardiac procedures in the operating theatre as well as the catheterization lab. Special emphasis is given to anesthetic management and analgesia techniques.
    Language English
    Publishing date 2021-03-25
    Publishing country China
    Document type Journal Article ; Review
    ZDB-ID 2573571-8
    ISSN 2077-6624 ; 2072-1439
    ISSN (online) 2077-6624
    ISSN 2072-1439
    DOI 10.21037/jtd-20-1804
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: A case report on ultrasound evaluation of pediatric post-operative abdominal pain.

    White, Alexander B / Bacon, Daniel R / Olinger, Kristen / Dehmer, Jeffrey J

    Radiology case reports

    2022  Volume 17, Issue 11, Page(s) 4223–4226

    Abstract: Pediatric post-operative abdominal pain can present a unique diagnostic challenge. The case presented here describes a 9-year-old female who presented with fever and worsening abdominal pain 4 days after laparoscopic resection of a benign ovarian ... ...

    Abstract Pediatric post-operative abdominal pain can present a unique diagnostic challenge. The case presented here describes a 9-year-old female who presented with fever and worsening abdominal pain 4 days after laparoscopic resection of a benign ovarian teratoma. Computed tomography failed to provide adequate diagnostic imaging. Ultrasound was subsequently used to rule-out a major post-operative complication and ultimately led to a successful non-operative approach while avoiding repeat radiation exposure. Thin body habitus, increased radiosensitivity of pediatric organs, and increased lifetime risk of cancer complicate the use of computed tomography in the pediatric population. Ultrasound, when correlated to clinical findings, has unique advantages over CT such as detailed delineation of soft tissue structures and dynamic assessment of anatomy that make it advantageous in the pediatric post-operative setting.
    Language English
    Publishing date 2022-09-08
    Publishing country Netherlands
    Document type Case Reports
    ZDB-ID 2406300-9
    ISSN 1930-0433
    ISSN 1930-0433
    DOI 10.1016/j.radcr.2022.08.040
    Database MEDical Literature Analysis and Retrieval System OnLINE

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