LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 614

Search options

  1. Article ; Online: Effects of age and word frequency on Korean visual word recognition: Evidence from a web-based large-scale lexical-decision task.

    Baek, Hyunah / Gordon, Peter C / Choi, Wonil

    Psychology and aging

    2024  

    Abstract: The present study examined age differences in word-frequency effects in Korean visual word recognition through a large-scale, web-based lexical-decision task. Four hundred ninety-seven adult Korean speakers in their 20s through 60s participated in the ... ...

    Abstract The present study examined age differences in word-frequency effects in Korean visual word recognition through a large-scale, web-based lexical-decision task. Four hundred ninety-seven adult Korean speakers in their 20s through 60s participated in the task, in which they decided the lexicality of 120 Korean words varying in frequency and 120 nonwords. Overall, both lexical-decision accuracy and response times increased with age, and more frequent words were recognized more rapidly than less frequent words. We also found significant effects of participants' reading skill as well as age of acquisition of words. Crucially, despite older adults' generally slower reaction times, there was no hint of any interaction between participant age and word frequency on lexical-decision times. This result adds to the literature on age-related changes in visual word recognition and provides evidence for stable word-frequency effect across the adult age spectrum. These findings are discussed with different hypotheses of lexical access and aging proposed in the literature. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
    Language English
    Publishing date 2024-01-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 635596-1
    ISSN 1939-1498 ; 0882-7974
    ISSN (online) 1939-1498
    ISSN 0882-7974
    DOI 10.1037/pag0000793
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Reading spaced and unspaced Korean text: Evidence from eye-tracking during reading.

    Baek, Hyunah / Choi, Wonil / Gordon, Peter C

    Quarterly journal of experimental psychology (2006)

    2022  Volume 76, Issue 5, Page(s) 1072–1085

    Abstract: In written Korean, spaces appear between phrasal units ("eojeols"). In Experiment 1, participants read sentences in which space information had been manipulated. Results indicated that removing spaces or replacing them with a symbol hindered reading, but ...

    Abstract In written Korean, spaces appear between phrasal units ("eojeols"). In Experiment 1, participants read sentences in which space information had been manipulated. Results indicated that removing spaces or replacing them with a symbol hindered reading, but this effect was not as disruptive as previously found in English. Experiment 2 presented sentences varying in the proportion of eojeols that ended with postpositional particles as well as the presence/absence of spaces. Results showed that space removal interfered with reading, but its effects were weaker when the sentence contained more postpositional particles. This suggests that postpositional particles provide an extra cue to word segmentation in Korean texts. These findings are discussed in relation to the unique characteristics of the Korean writing system and to the models of eye-movement control during reading in different languages.
    MeSH term(s) Humans ; Eye-Tracking Technology ; Reading ; Eye Movements ; Language ; Republic of Korea
    Language English
    Publishing date 2022-06-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 219170-2
    ISSN 1747-0226 ; 0033-555X ; 1747-0218
    ISSN (online) 1747-0226
    ISSN 0033-555X ; 1747-0218
    DOI 10.1177/17470218221104736
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: High-brightness holographic projection.

    Chao, Brian / Gopakumar, Manu / Choi, Suyeon / Wetzstein, Gordon

    Optics letters

    2023  Volume 48, Issue 15, Page(s) 4041–4044

    Abstract: We propose a holographic projection system that achieves high image quality, brightness, and light efficiency. Using a novel, to the best of our knowledge, light-efficiency loss function, we are able to concentrate more light on the projection region and ...

    Abstract We propose a holographic projection system that achieves high image quality, brightness, and light efficiency. Using a novel, to the best of our knowledge, light-efficiency loss function, we are able to concentrate more light on the projection region and improve display brightness compared with conventional projectors. Leveraging emerging artificial intelligence-driven computer-generated holography and camera-in-the-loop calibration techniques, we learn a holographic wave propagation model using experimentally captured holographic images and demonstrate state-of-the-art light reallocation performance with high image quality.
    Language English
    Publishing date 2023-07-31
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4794
    ISSN (online) 1539-4794
    DOI 10.1364/OL.489617
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Public-private partnerships in fostering outer space innovations.

    Rausser, Gordon / Choi, Elliot / Bayen, Alexandre

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

    2023  Volume 120, Issue 43, Page(s) e2222013120

    Abstract: As public and private institutions recognize the role of space exploration as a catalyst for economic growth, various areas of innovation are expected to emerge as drivers of the space economy. These include space transportation, in-space manufacturing, ... ...

    Abstract As public and private institutions recognize the role of space exploration as a catalyst for economic growth, various areas of innovation are expected to emerge as drivers of the space economy. These include space transportation, in-space manufacturing, bioproduction, in-space agriculture, nuclear launch, and propulsion systems, as well as satellite services and their maintenance. However, the current nature of space as an open-access resource and global commons presents a systemic risk for exuberant competition for space goods and services, which may result in a "tragedy of the commons" dilemma. In the race among countries to capture the value of space exploration, NASA, American research universities, and private companies can avoid any coordination failures by collaborating in a public-private research and development partnership (PPRDP) structure. We present such a structure founded upon the principles of polycentric autonomous governance, which incorporate a decentralized autonomous organization framework and specialized research clusters. By advancing an alignment of incentives among the specified participatory members, PPRDPs can play a pivotal role in stimulating open-source research by creating positive knowledge spillover effects and agglomeration externalities as well as embracing the nonlinear decomposition paradigm that may blur the distinction between basic and applied research.
    Language English
    Publishing date 2023-10-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2222013120
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: High-performance strategies for the recent MRSF-TDDFT in GAMESS.

    Komarov, Konstantin / Mironov, Vladimir / Lee, Seunghoon / Pham, Buu Q / Gordon, Mark S / Choi, Cheol Ho

    The Journal of chemical physics

    2023  Volume 158, Issue 19

    Abstract: Multiple ERI (Electron Repulsion Integral) tensor contractions (METC) with several matrices are ubiquitous in quantum chemistry. In response theories, the contraction operation, rather than ERI computations, can be the major bottleneck, as its ... ...

    Abstract Multiple ERI (Electron Repulsion Integral) tensor contractions (METC) with several matrices are ubiquitous in quantum chemistry. In response theories, the contraction operation, rather than ERI computations, can be the major bottleneck, as its computational demands are proportional to the multiplicatively combined contributions of the number of excited states and the kernel pre-factors. This paper presents several high-performance strategies for METC. Optimal approaches involve either the data layout reformations of interim density and Fock matrices, the introduction of intermediate ERI quartet buffer, and loop-reordering optimization for a higher cache hit rate. The combined strategies remarkably improve the performance of the MRSF (mixed reference spin flip)-TDDFT (time-dependent density functional theory) by nearly 300%. The results of this study are not limited to the MRSF-TDDFT method and can be applied to other METC scenarios.
    Language English
    Publishing date 2023-05-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/5.0148005
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Response Regarding: Standardized Care and Oral Antibioics on Discharge for Pediatric Perforated Appendicitis.

    Tomita, Sandra / Fisher, Jason / Ginsburg, Howard / Kuenzler, Keith / Choi, Jee-Hye / Gordon, Alex

    The Journal of surgical research

    2021  Volume 267, Page(s) 729

    MeSH term(s) Abdominal Abscess ; Appendectomy ; Appendicitis/drug therapy ; Child ; Humans ; Patient Discharge
    Language English
    Publishing date 2021-07-14
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 80170-7
    ISSN 1095-8673 ; 0022-4804
    ISSN (online) 1095-8673
    ISSN 0022-4804
    DOI 10.1016/j.jss.2021.05.049
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Yb Substitution and Ultralow Thermal Conductivity of the Ca

    Hong, Yeongjin / Lee, Junsu / Seo, Donghwan / Choi, Myung-Ho / Yox, Philip / Kovnir, Kirill / Miller, Gordon J / Ok, Kang Min / You, Tae-Soo

    Inorganic chemistry

    2023  Volume 62, Issue 26, Page(s) 10141–10151

    Abstract: A series of Yb-substituted Zintl phases in the ... ...

    Abstract A series of Yb-substituted Zintl phases in the Ca
    Language English
    Publishing date 2023-06-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.3c00615
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Interprofessional Collaborative Practice Trends Between Speech-Language Pathologists and Audiologists.

    Davis, Tara / Choi, Dahye / Gordon-Hickey, Susan / Estis, Julie

    Journal of allied health

    2021  Volume 50, Issue 2, Page(s) 104–110

    Abstract: Purpose: This study investigated interprofessional practice (IPP) trends and attitudes between speech-language pathologists (SLP) and audiologists (AUD).: Methods: Clinical SLPs and AUDs completed an online survey, consisting of demographics, ... ...

    Abstract Purpose: This study investigated interprofessional practice (IPP) trends and attitudes between speech-language pathologists (SLP) and audiologists (AUD).
    Methods: Clinical SLPs and AUDs completed an online survey, consisting of demographics, caseload trends, collaborative practice trends, and barriers to collaborative practice.
    Results: A total of 237 participants (131 SLPs, 106 AUDs) completed an online survey. Survey results indicated that IPP is important or very important to both professions. A smaller proportion of SLPs reported collaborating with AUDs than AUDs reported collaborating with SLPs. The most frequently identified barrier to collaboration experienced by the two professions was "access." Based on their beliefs, however, the top barriers differed between the professions. Specifically, SLPs believed that "access" was the top barrier to collaboration with AUDs whereas AUDs believed that "attitudes and perceptions" was the top barrier to collaboration with SLPs. Findings from the revised Attitudes Towards Health Care Teams Scale indicated that SLPs had a significantly more positive attitude toward IPP than AUDs.
    Conclusions: This study indicated that although IPP is valued by SLPs and AUDs, barriers continue to limit the percentage of practitioners engaging in IPP. Although both professions experienced common barriers, their beliefs about barriers to collaboration differed.
    MeSH term(s) Attitude of Health Personnel ; Audiologists ; Communication Disorders ; Humans ; Pathologists ; Speech ; Speech-Language Pathology ; Surveys and Questionnaires
    Language English
    Publishing date 2021-05-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 197884-6
    ISSN 1945-404X ; 0090-7421
    ISSN (online) 1945-404X
    ISSN 0090-7421
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Prophylactic Anticoagulation in Adult Patients with Nephrotic Syndrome.

    Gordon-Cappitelli, Judit / Choi, Michael J

    Clinical journal of the American Society of Nephrology : CJASN

    2019  Volume 15, Issue 1, Page(s) 123–125

    MeSH term(s) Anticoagulants/adverse effects ; Anticoagulants/therapeutic use ; Blood Coagulation/drug effects ; Clinical Decision-Making ; Hemorrhage/chemically induced ; Humans ; Hypoalbuminemia/epidemiology ; Nephrotic Syndrome/blood ; Nephrotic Syndrome/diagnosis ; Nephrotic Syndrome/drug therapy ; Nephrotic Syndrome/epidemiology ; Risk Assessment ; Risk Factors ; Thromboembolism/blood ; Thromboembolism/diagnosis ; Thromboembolism/epidemiology ; Thromboembolism/prevention & control ; Treatment Outcome
    Chemical Substances Anticoagulants
    Language English
    Publishing date 2019-10-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2226665-3
    ISSN 1555-905X ; 1555-9041
    ISSN (online) 1555-905X
    ISSN 1555-9041
    DOI 10.2215/CJN.05250419
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: Quantitative hemodynamic imaging: a method to correct the effects of optical properties on laser speckle imaging.

    Phan, Thinh / Crouzet, Christian / Kennedy, Gordon T / Durkin, Anthony J / Choi, Bernard

    Neurophotonics

    2023  Volume 10, Issue 4, Page(s) 45001

    Abstract: Significance: Studying cerebral hemodynamics may provide diagnostic information on neurological conditions. Wide-field imaging techniques, such as laser speckle imaging (LSI) and optical intrinsic signal imaging, are commonly used to study cerebral ... ...

    Abstract Significance: Studying cerebral hemodynamics may provide diagnostic information on neurological conditions. Wide-field imaging techniques, such as laser speckle imaging (LSI) and optical intrinsic signal imaging, are commonly used to study cerebral hemodynamics. However, they often do not account appropriately for the optical properties of the brain that can vary among subjects and even during a single measurement. Here, we describe the combination of LSI and spatial-frequency domain imaging (SFDI) into a wide-field quantitative hemodynamic imaging (QHI) system that can correct the effects of optical properties on LSI measurements to achieve a quantitative measurement of cerebral blood flow (CBF).
    Aim: We describe the design, fabrication, and testing of QHI.
    Approach: The QHI hardware combines LSI and SFDI with spatial and temporal synchronization. We characterized system sensitivity, accuracy, and precision with tissue-mimicking phantoms. With SFDI optical property measurements, we describe a method derived from dynamic light scattering to obtain absolute CBF values from LSI and SFDI measurements. We illustrate the potential benefits of absolute CBF measurements in resting-state and dynamic experiments.
    Results: QHI achieved a 50-Hz raw acquisition frame rate with a
    Conclusions: We developed a wide-field QHI system to account for the confounding effects of optical properties on CBF LSI measurements using the information obtained from SFDI.
    Language English
    Publishing date 2023-10-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2781943-7
    ISSN 2329-4248 ; 2329-423X
    ISSN (online) 2329-4248
    ISSN 2329-423X
    DOI 10.1117/1.NPh.10.4.045001
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top