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  1. AU="Gehrmann, Sebastian"
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  1. Book ; Thesis: Bewegungsanalysen der menschlichen Hand bei degenerativen Erkrankungen

    Gehrmann, Sebastian

    2011  

    Author's details vorgelegt von Sebastian V. Gehrmann
    Language German
    Size Getr. Zählung
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Düsseldorf, Univ., Habil.-Schr., 2011
    Accompanying material 1 CD-ROM
    HBZ-ID HT017021080
    Database Catalogue ZB MED Medicine, Health

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    Shelf markLoan statusLocation
    2011 E 3845 order for loan Magazin
    2011 MO 751 order for loan Magazin

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  2. Book ; Thesis: 3-D-Atlas des kardiovaskulären Systems des Menschen auf der Basis des Visible Human

    Gehrmann, Sebastian

    2003  

    Title variant Drei-D-Atlas des kardiovaskulären Systems des Menschen auf der Basis des Visible Human
    Author's details vorgelegt von Sebastian Gehrmann
    Language German
    Size IV, 70 S. : Ill., 21 cm
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Hamburg, Univ., Diss., 2003
    HBZ-ID HT013888413
    Database Catalogue ZB MED Medicine, Health

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    Shelf markLoan statusLocation
    2003 D 2323 order for loan Magazin

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  3. Book ; Online ; Thesis: Strahlen- und Kontrastmittelbelastung bei endovaskulärer Therapie von abdominellen und thorakalen Aortenpathologien mit mobilen versus fest installierten Angiographiesystemen

    Arnautovic, Amir [Verfasser] / Wagenhäuser, Markus Udo [Gutachter] / Gehrmann, Sebastian [Gutachter]

    2023  

    Author's details Amir Arnautovic ; Gutachter: Markus Udo Wagenhäuser, Sebastian Gehrmann
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language German
    Publisher Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf
    Publishing place Düsseldorf
    Document type Book ; Online ; Thesis
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  4. Book ; Online: Benchmarking Large Language Model Capabilities for Conditional Generation

    Maynez, Joshua / Agrawal, Priyanka / Gehrmann, Sebastian

    2023  

    Abstract: Pre-trained large language models (PLMs) underlie most new developments in natural language processing. They have shifted the field from application-specific model pipelines to a single model that is adapted to a wide range of tasks. Autoregressive PLMs ... ...

    Abstract Pre-trained large language models (PLMs) underlie most new developments in natural language processing. They have shifted the field from application-specific model pipelines to a single model that is adapted to a wide range of tasks. Autoregressive PLMs like GPT-3 or PaLM, alongside techniques like few-shot learning, have additionally shifted the output modality to generation instead of classification or regression. Despite their ubiquitous use, the generation quality of language models is rarely evaluated when these models are introduced. Additionally, it is unclear how existing generation tasks--while they can be used to compare systems at a high level--relate to the real world use cases for which people have been adopting them. In this work, we discuss how to adapt existing application-specific generation benchmarks to PLMs and provide an in-depth, empirical study of the limitations and capabilities of PLMs in natural language generation tasks along dimensions such as scale, architecture, input and output language. Our results show that PLMs differ in their applicability to different data regimes and their generalization to multiple languages and inform which PLMs to use for a given generation task setup. We share best practices to be taken into consideration when benchmarking generation capabilities during the development of upcoming PLMs.
    Keywords Computer Science - Computation and Language
    Subject code 004
    Publishing date 2023-06-29
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Defining the region of interest of the knee for perioperative volumetric assessment with a portable 3D scanner in orthopedic and trauma surgery.

    Latz, David / Oezel, Lisa / Taday, Roman / Gehrmann, Sebastian Viktor / Windolf, Joachim / Schiffner, Erik

    PloS one

    2022  Volume 17, Issue 6, Page(s) e0270371

    Abstract: Background: The aim of this study was to characterize three regions of interest (ROI) around the knee with a portable 3D scanner (Artec 3D scanner EVA). Soft tissue topography assessment with an optimized, precise, and reproducible method may assist ... ...

    Abstract Background: The aim of this study was to characterize three regions of interest (ROI) around the knee with a portable 3D scanner (Artec 3D scanner EVA). Soft tissue topography assessment with an optimized, precise, and reproducible method may assist surgeons when managing soft tissue swelling in the post traumatic setting.
    Methods: 12 healthy volunteers (24 legs, 7 women, 5 man) were included in this study. The patient cohort showed a mean age of 27.1 years (SD±3), a mean weight of 70 kg (SD±13) and a mean height of 171 cm (SD±8.8). All scans were recorded by the same examiner in the same room and with the same scanner (Artec, 3 D scanner EVA). Three volume regions of interest (ROI) were defined: the distal femur (circumference measured between the of superior extent of the patella to 10 cm proximal), the knee joint (measured from the top of the patella to the tibial tuberosity) and the proximal tibia (tibial tuberosity to 10 cm distal).
    Results: The mean volume of the right leg was 3.901 l (I. distal femur: 1.63 l, knee joint: 1.33 l, proximal tibia: 1.10 l) and mean volume of the left leg was 3.910 l (I. distal femur: 1.66 l, knee joint: 1.34 l, proximal tibia: 1.12 l). The volume difference between the right and left leg was 0.094 l (SD ± 0.083 l) The Wilcoxon-Mann-Whitney test showed no significant differences of the volumes between the right and left leg.
    Conclusions: This study demonstrates that portable 3D scanning could be an accurate and reliable tool for orthopedics and trauma surgeons. Based on the ROIs of this pilot study, further studies are needed to test the significance for clinical applications for patients with an injured knee.
    MeSH term(s) Adult ; Female ; Femur/surgery ; Humans ; Knee ; Knee Joint/diagnostic imaging ; Knee Joint/surgery ; Orthopedics ; Pilot Projects ; Tibia/diagnostic imaging ; Tibia/surgery
    Language English
    Publishing date 2022-06-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0270371
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  6. Article ; Online: Volumetry of Hand and Forearm: A 3D Volumetric Approach.

    Oezel, Lisa / Latz, David / Gehrmann, Sebastian Viktor / Taday, Roman / Windolf, Joachim / Schiffner, E

    Hand (New York, N.Y.)

    2022  , Page(s) 15589447221141492

    Abstract: Background: Swelling and edema of the hand and forearm may occur in various traumatic and degenerative diseases. So far, no precise measurement protocol exists. The objective of this study was to evaluate an examination protocol with relevant regions of ...

    Abstract Background: Swelling and edema of the hand and forearm may occur in various traumatic and degenerative diseases. So far, no precise measurement protocol exists. The objective of this study was to evaluate an examination protocol with relevant regions of interest (ROIs) measured by a 3-dimensional (3D) scanner to achieve precise, reproducible, and objective measurements for an optimized detection of volumes of the hand and forearm.
    Methods: A 3D scan protocol was developed using an Artec, 3D scanner EVA to measure discrete hand volumes of healthy volunteers. Five areas were defined as ROIs, representing volumes of the finger, metacarpus, wrist, hand, and distal forearm. Contralateral limbs were used for volume comparisons and calculation of volume differences.
    Results: For this study, 12 individuals (58.3% women, 24 hands and forearms) with a mean age of 27.1 ± 3 years were included. Mean volume values for left and right ROIs correlated with each other, with slightly higher volumes for the right upper extremity. Volume differences showed statistically significant results for the finger region (ROI I;
    Conclusions: Our results demonstrate that this 3D volumetric approach is a reliable and objective tool for measuring volumes and circumferences in hand and forearm. Based on our determined ROIs, further studies are needed to explore the significance for clinical applications.
    Language English
    Publishing date 2022-12-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2277325-3
    ISSN 1558-9455 ; 1558-9447
    ISSN (online) 1558-9455
    ISSN 1558-9447
    DOI 10.1177/15589447221141492
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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  7. Article ; Online: Establishing regions of interest of the lower leg and ankle for perioperative volumetric assessment with a portable 3D scanner in orthopedic and trauma surgery - a pilot study.

    Taday, Roman / Schiffner, Erik / Gehrmann, Sebastian Viktor / Wilms, Lena Marie / Kaufmann, Robert Alexander / Windolf, Joachim / Latz, David

    Journal of foot and ankle research

    2023  Volume 16, Issue 1, Page(s) 87

    Abstract: Background: Soft tissue swelling assessment benefits from a reproducible and easy to use measurement method. Monitoring of the injured lower extremity is of clinical import during staged soft tissue management. Portable 3D scanners offer a novel and ... ...

    Abstract Background: Soft tissue swelling assessment benefits from a reproducible and easy to use measurement method. Monitoring of the injured lower extremity is of clinical import during staged soft tissue management. Portable 3D scanners offer a novel and precise option to quantify and contrast the shapes and volumes of the injured and contralateral uninjured limbs. This study determined three regions of interest (ROI) within the lower extremity (lower leg, ankle and foot), that can be used to evaluate 3D volumetric assessment for staged soft tissue management in orthopedic and trauma surgery.
    Methods: Twelve healthy volunteers (24 legs) were included in this cohort study. Scans of all three ROI were recorded with a portable 3D scanner (Artec, 3D scanner EVA) and compared between the right and left leg using the software Artec Studio (Arctec Group, Luxemburg).
    Results: Mean volume of the right leg was 1926.64 ± 308.84 ml (mean ± SD). ROI: lower leg: 931.86 ± 236.15 ml; ankle: 201.56 ± 27.88 ml; foot: 793.21 ± 112.28 ml. Mean volume of the left leg was 1937.73 ± 329.51 ml. ROI: lower leg: 933.59 ± 251.12 ml; ankle: 201.53 ± 25.54 ml; foot: 802.62 ± 124.83 ml. There was no significant difference of the overall volume between right and left leg (p > 0.05; overall volume: △ difference: 29.5 ± 7.29 ml, p = 0.8; lower leg: △ difference: 21.5 ± 6.39 ml, p = 0.8; ankle: △ difference: 5.3 ± 2.11 ml, p = 0.4; △ difference: 16.33 ± 4.45 ml, p = 0.8.
    Conclusion: This pilot study defines three regions of interest of the lower leg and demonstrates no difference between the right and left side. Based on these ROI, further studies are needed to evaluate the clinical applicability of the scanner.
    MeSH term(s) Humans ; Leg ; Ankle ; Pilot Projects ; Cohort Studies ; Imaging, Three-Dimensional/methods ; Lower Extremity
    Language English
    Publishing date 2023-12-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2440706-9
    ISSN 1757-1146 ; 1757-1146
    ISSN (online) 1757-1146
    ISSN 1757-1146
    DOI 10.1186/s13047-023-00684-2
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  8. Book ; Online: Diagnosing AI Explanation Methods with Folk Concepts of Behavior

    Jacovi, Alon / Bastings, Jasmijn / Gehrmann, Sebastian / Goldberg, Yoav / Filippova, Katja

    2022  

    Abstract: We investigate a formalism for the conditions of a successful explanation of AI. We consider "success" to depend not only on what information the explanation contains, but also on what information the human explainee understands from it. Theory of mind ... ...

    Abstract We investigate a formalism for the conditions of a successful explanation of AI. We consider "success" to depend not only on what information the explanation contains, but also on what information the human explainee understands from it. Theory of mind literature discusses the folk concepts that humans use to understand and generalize behavior. We posit that folk concepts of behavior provide us with a "language" that humans understand behavior with. We use these folk concepts as a framework of social attribution by the human explainee - the information constructs that humans are likely to comprehend from explanations - by introducing a blueprint for an explanatory narrative (Figure 1) that explains AI behavior with these constructs. We then demonstrate that many XAI methods today can be mapped to folk concepts of behavior in a qualitative evaluation. This allows us to uncover their failure modes that prevent current methods from explaining successfully - i.e., the information constructs that are missing for any given XAI method, and whose inclusion can decrease the likelihood of misunderstanding AI behavior.

    Comment: Accepted to the Journal of Artificial Intelligence Research (JAIR Vol. 78, 2023)
    Keywords Computer Science - Artificial Intelligence
    Subject code 120
    Publishing date 2022-01-26
    Publishing country us
    Document type Book ; Online
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  9. Book ; Online ; Thesis: Funktionelles Ergebnis nach Implantation einer modularen inversen Schulterprothese im Vergleich zur humeruskopferhaltenden Plattenosteosynthese

    Leibnitz, Franziska [Verfasser] / Gehrmann, Sebastian [Gutachter] / Schimmöller, Lars [Gutachter]

    2021  

    Author's details Franziska Leibnitz ; Gutachter: Sebastian Gehrmann, Lars Schimmöller
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language German
    Publisher Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf
    Publishing place Düsseldorf
    Document type Book ; Online ; Thesis
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  10. Book ; Online ; Thesis: Die Bedeutung der kompletten Resektion von Gehirnmetastasen in der frühen postoperativen Magnetresonanztomographie für die Entstehungswahrscheinlichkeit eines Lokalrezidivs

    Jager, Julia [Verfasser] / Kamp, Marcel Alexander [Gutachter] / Gehrmann, Sebastian [Gutachter]

    2021  

    Author's details Julia Jager ; Gutachter: Marcel Alexander Kamp, Sebastian Gehrmann
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language German
    Publisher Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf
    Publishing place Düsseldorf
    Document type Book ; Online ; Thesis
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