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  1. Article ; Online: Investigating the relationship of schools reopening to increases in COVID-19 infections using event study methodology: The case of the Delta variant.

    Valentine, Randall / Valentine, Dawn / Valentine, Jimmie L

    Journal of public health (Oxford, England)

    2021  Volume 45, Issue 1, Page(s) 134–135

    Abstract: Background: Hypothesis: School reopening had a significant impact on COVID-19 infection rates across USA states.: Methods: Eight states with fully reopened public schools were studied. States who did not previously have stay-at-home orders for a ... ...

    Abstract Background: Hypothesis: School reopening had a significant impact on COVID-19 infection rates across USA states.
    Methods: Eight states with fully reopened public schools were studied. States who did not previously have stay-at-home orders for a minimum of 30 days were excluded from the study so that increases in infection rates would be solely due to the economies of reopening. This study used event study methodology with a 30-day estimation window. This allowed us to determine if increases in COVID-19 infection rates were significant following schools reopening.
    Results: Eight states were analyzed, and seven of the states had positive and significant COVID-19 infection increases. The other state's increase was negative and significant.
    Conclusions: This study found that reopening of schools had an initial 5-day increase in COVID-19 infections in seven of eight states whose data were examined. With schools being re-opened nationwide in Fall 2021, this indicates that with the Delta variant there is an expected significant increase in infections.
    MeSH term(s) Humans ; COVID-19/epidemiology ; SARS-CoV-2 ; Schools
    Language English
    Publishing date 2021-10-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 2142082-8
    ISSN 1741-3850 ; 1741-3842
    ISSN (online) 1741-3850
    ISSN 1741-3842
    DOI 10.1093/pubmed/fdab373
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.B 2186: Show issues Location:
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  2. Article ; Online: Fintech: A content analysis of the finance and information systems literature.

    Jourdan, Zack / Corley, J Ken / Valentine, Randall / Tran, Arthur M

    Electronic markets

    2023  Volume 33, Issue 1, Page(s) 2

    Abstract: The amount of research related to financial technologies (fintech) has grown rapidly since these modalities have been implemented. A review of this literature base will help identify the topics that have been explored and identify topics for further ... ...

    Abstract The amount of research related to financial technologies (fintech) has grown rapidly since these modalities have been implemented. A review of this literature base will help identify the topics that have been explored and identify topics for further research. This research project collects, synthesizes, and analyzes both the research strategies (i.e., methodologies) and content (e.g., topics, focus, categories) of the literature, and then discusses an agenda for future research efforts. We searched for fintech research published in the last 20 years and analyzed 146 articles published in Finance and 70 articles published in Information Systems (IS) during this period in their respective A*, A, and B journals in the 2019 Australian Business Deans Council list. We found an increasing level of activity during the most recent 6-year period and a biased distribution of fintech articles focused on exploratory methodologies. We also found several research strategies that were either underrepresented or absent from the pool of fintech research and identified several subject areas that need further exploration. We also created four fintech topic categories to organize and classify this diverse research stream.
    Language English
    Publishing date 2023-04-03
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2017342-8
    ISSN 1422-8890 ; 1019-6781
    ISSN (online) 1422-8890
    ISSN 1019-6781
    DOI 10.1007/s12525-023-00624-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Relationship of George Floyd protests to increases in COVID-19 cases using event study methodology.

    Valentine, Randall / Valentine, Dawn / Valentine, Jimmie L

    Journal of public health (Oxford, England)

    2020  Volume 42, Issue 4, Page(s) 696–697

    Abstract: Background: Protests ignited by the George Floyd incident were examined for any significant impact on COVID-19 infection rates in select US cities.: Methods: Eight US cities were studied in which protestors in the tens of thousands were reported. ... ...

    Abstract Background: Protests ignited by the George Floyd incident were examined for any significant impact on COVID-19 infection rates in select US cities.
    Methods: Eight US cities were studied in which protestors in the tens of thousands were reported. Only cities that reside in states whose stay-at-home orders had been rescinded or expired for a minimum of 30 days were included in the sample to account for impact of growth rates solely due to economies reopening. Event study methodology was used with a 30-day estimation period to examine whether growth in COVID-19 infection rates was significant.
    Results: In the eight cities analyzed, all had positive abnormal growth in infection rate. In six of the eight cities, infection rate growth was positive and significant.
    Conclusions: In this study, it was apparent that violations of Centers for Disease Control and Prevention (CDC)-recommended social distancing guidelines caused a significant increase in infection rates. The data suggest that to slow the spread of COVID-19, CDC guidelines must be followed in protest situations.
    MeSH term(s) African Americans ; COVID-19/epidemiology ; COVID-19/transmission ; Cities ; Community Participation ; Dissent and Disputes ; Famous Persons ; Homicide ; Humans ; Male ; Pandemics ; Political Activism ; SARS-CoV-2 ; United States/epidemiology
    Keywords covid19
    Language English
    Publishing date 2020-08-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2142082-8
    ISSN 1741-3850 ; 1741-3842
    ISSN (online) 1741-3850
    ISSN 1741-3842
    DOI 10.1093/pubmed/fdaa127
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.B 2186: Show issues Location:
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  4. Article ; Online: Examining the Relationship between Earnings and Patent Filings among Pharmaceutical Companies in Asia

    Alina Okun / Randall Valentine

    International Journal of Economics and Financial Issues, Vol 10, Iss

    2020  Volume 6

    Abstract: Asian pharmaceutical firms often take over a decade to develop new patentable technology, with costs running into billions of dollars. It is a widely held belief that the resulting patents determine the future viability of the firm. The purpose of this ... ...

    Abstract Asian pharmaceutical firms often take over a decade to develop new patentable technology, with costs running into billions of dollars. It is a widely held belief that the resulting patents determine the future viability of the firm. The purpose of this study is to examine the number of patent filings and the number of jurisdictional patent filings on the earnings of the firm. We find that a significant relationship exists between the number of patent filings and profitability, but no such relationship exists between the jurisdictional filings and profitability. Keywords: Pharmaceutical, Patent Filing, Asian Health Care JEL Classifications: F, G, M DOI: https://doi.org/10.32479/ijefi.10509
    Keywords Business ; HF5001-6182 ; Economics as a science ; HB71-74
    Language English
    Publishing date 2020-11-01T00:00:00Z
    Publisher EconJournals
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Examining the Relationship between Earnings and Patent Filings among Pharmaceutical Companies in Asia

    Alina Okun / Randall Valentine

    International Journal of Economics and Financial Issues, Vol 10, Iss

    2020  Volume 6

    Abstract: Asian pharmaceutical firms often take over a decade to develop new patentable technology, with costs running into billions of dollars. It is a widely held belief that the resulting patents determine the future viability of the firm. The purpose of this ... ...

    Abstract Asian pharmaceutical firms often take over a decade to develop new patentable technology, with costs running into billions of dollars. It is a widely held belief that the resulting patents determine the future viability of the firm. The purpose of this study is to examine the number of patent filings and the number of jurisdictional patent filings on the earnings of the firm. We find that a significant relationship exists between the number of patent filings and profitability, but no such relationship exists between the jurisdictional filings and profitability. Keywords: Pharmaceutical, Patent Filing, Asian Health Care JEL Classifications: F, G, M DOI: https://doi.org/10.32479/ijefi.10509
    Keywords Business ; HF5001-6182 ; Economics as a science ; HB71-74
    Language English
    Publishing date 2020-11-01T00:00:00Z
    Publisher EconJournals
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Examining the Relationship between Earnings and Patent Filings among Pharmaceutical Companies in Asia

    Alina Okun / Randall Valentine

    International Journal of Economics and Financial Issues, Vol 10, Iss

    2020  Volume 6

    Abstract: Asian pharmaceutical firms often take over a decade to develop new patentable technology, with costs running into billions of dollars. It is a widely held belief that the resulting patents determine the future viability of the firm. The purpose of this ... ...

    Abstract Asian pharmaceutical firms often take over a decade to develop new patentable technology, with costs running into billions of dollars. It is a widely held belief that the resulting patents determine the future viability of the firm. The purpose of this study is to examine the number of patent filings and the number of jurisdictional patent filings on the earnings of the firm. We find that a significant relationship exists between the number of patent filings and profitability, but no such relationship exists between the jurisdictional filings and profitability. Keywords: Pharmaceutical, Patent Filing, Asian Health Care JEL Classifications: F, G, M DOI: https://doi.org/10.32479/ijefi.10509
    Keywords Business ; HF5001-6182 ; Economics as a science ; HB71-74
    Language English
    Publishing date 2020-11-01T00:00:00Z
    Publisher EconJournals
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article: Relationship of George Floyd protests to increases in COVID-19 cases using event study methodology

    Valentine, Randall / Valentine, Dawn / Valentine, Jimmie L

    J. public health (Oxf)

    Abstract: BACKGROUND: Protests ignited by the George Floyd incident were examined for any significant impact on COVID-19 infection rates in select US cities. METHODS: Eight US cities were studied in which protestors in the tens of thousands were reported. Only ... ...

    Abstract BACKGROUND: Protests ignited by the George Floyd incident were examined for any significant impact on COVID-19 infection rates in select US cities. METHODS: Eight US cities were studied in which protestors in the tens of thousands were reported. Only cities that reside in states whose stay-at-home orders had been rescinded or expired for a minimum of 30 days were included in the sample to account for impact of growth rates solely due to economies reopening. Event study methodology was used with a 30-day estimation period to examine whether growth in COVID-19 infection rates was significant. RESULTS: In the eight cities analyzed, all had positive abnormal growth in infection rate. In six of the eight cities, infection rate growth was positive and significant. CONCLUSIONS: In this study, it was apparent that violations of Centers for Disease Control and Prevention (CDC)-recommended social distancing guidelines caused a significant increase in infection rates. The data suggest that to slow the spread of COVID-19, CDC guidelines must be followed in protest situations.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #694759
    Database COVID19

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  8. Article ; Online: Relationship of George Floyd protests to increases in COVID-19 cases using event study methodology

    Valentine, Randall / Valentine, Dawn / Valentine, Jimmie L

    Journal of Public Health ; ISSN 1741-3842 1741-3850

    2020  

    Abstract: Abstract Background Protests ignited by the George Floyd incident were examined for any significant impact on COVID-19 infection rates in select US cities. Methods Eight US cities were studied in which protestors in the tens of thousands were reported. ... ...

    Abstract Abstract Background Protests ignited by the George Floyd incident were examined for any significant impact on COVID-19 infection rates in select US cities. Methods Eight US cities were studied in which protestors in the tens of thousands were reported. Only cities that reside in states whose stay-at-home orders had been rescinded or expired for a minimum of 30 days were included in the sample to account for impact of growth rates solely due to economies reopening. Event study methodology was used with a 30-day estimation period to examine whether growth in COVID-19 infection rates was significant. Results In the eight cities analyzed, all had positive abnormal growth in infection rate. In six of the eight cities, infection rate growth was positive and significant. Conclusions In this study, it was apparent that violations of Centers for Disease Control and Prevention (CDC)-recommended social distancing guidelines caused a significant increase in infection rates. The data suggest that to slow the spread of COVID-19, CDC guidelines must be followed in protest situations.
    Keywords Public Health, Environmental and Occupational Health ; General Medicine ; covid19
    Language English
    Publisher Oxford University Press (OUP)
    Publishing country uk
    Document type Article ; Online
    DOI 10.1093/pubmed/fdaa127
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: What Should I Do?: Maintenance of Certification for All Cardiologists in 2019 and Beyond.

    Valentine, C Michael / Cox, David A / Deering, Thomas F / Starling, Randall C

    Journal of the American College of Cardiology

    2019  Volume 73, Issue 4, Page(s) 517–520

    MeSH term(s) Cardiology ; Certification
    Language English
    Publishing date 2019-01-31
    Publishing country United States
    Document type Editorial
    ZDB-ID 605507-2
    ISSN 1558-3597 ; 0735-1097
    ISSN (online) 1558-3597
    ISSN 0735-1097
    DOI 10.1016/j.jacc.2018.12.024
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 1846: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (1.OG)
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    Zs.MO 196: Show issues

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  10. Article ; Online: Evaluation and Verification of a microRNA Panel Using Quadratic Discriminant Analysis for the Classification of Human Body Fluids in DNA Extracts.

    Rhodes, Ciara / Lewis, Carolyn / Price, Kelsey / Valentine, Anaya / Creighton, Mary-Randall A / Boone, Edward / Seashols-Williams, Sarah

    Genes

    2023  Volume 14, Issue 5

    Abstract: There is significant interest in the use of miRNA analysis for forensic body fluid identification. Demonstrated co-extraction and detection in DNA extracts could make the use of miRNAs a more streamlined molecular body fluid identification method than ... ...

    Abstract There is significant interest in the use of miRNA analysis for forensic body fluid identification. Demonstrated co-extraction and detection in DNA extracts could make the use of miRNAs a more streamlined molecular body fluid identification method than other RNA-based methods. We previously reported a reverse transcription-quantitative PCR (RT-qPCR) panel of eight miRNAs that classified venous and menstrual blood, feces, urine, saliva, semen, and vaginal secretions using a quadratic discriminant analysis (QDA) model with 93% accuracy in RNA extracts. Herein, miRNA expression in DNA extracts from 50 donors of each body fluid were tested using the model. Initially, a classification rate of 87% was obtained, which increased to 92% when three additional miRNAs were added. Body fluid identification was found to be reliable across population samples of mixed ages, ethnicities, and sex, with 72-98% of the unknown samples classifying correctly. The model was then tested against compromised samples and over biological cycles, where classification accuracy varied, depending on the body fluid. In conclusion, we demonstrated the ability to classify body fluids using miRNA expression from DNA extracts, eliminating the need for RNA extraction, greatly reducing evidentiary sample consumption and processing time in forensic laboratories, but acknowledge that compromised semen and saliva samples can fail to classify properly, and mixed sample classification remains untested and may have limitations.
    MeSH term(s) Female ; Humans ; MicroRNAs/genetics ; MicroRNAs/analysis ; Discriminant Analysis ; Forensic Genetics/methods ; Body Fluids/chemistry ; Feces ; DNA/genetics
    Chemical Substances MicroRNAs ; DNA (9007-49-2)
    Language English
    Publishing date 2023-04-25
    Publishing country Switzerland
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2527218-4
    ISSN 2073-4425 ; 2073-4425
    ISSN (online) 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes14050968
    Database MEDical Literature Analysis and Retrieval System OnLINE

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