881 results on '"P Tucker"'
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2. Negative Urgency, (Lack of) Premeditation, and Sensation Seeking: Indirect Relationships with Suicidal Ideation through Thwarted Interpersonal Needs
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Paige Picou, Emma H. Moscardini, Kaylee Perkins, Raymond P. Tucker, and Ryan M. Hill
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Psychiatry and Mental health ,Clinical Psychology - Published
- 2023
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3. Integrated intracellular organization and its variations in human iPS cells
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Matheus P. Viana, Jianxu Chen, Theo A. Knijnenburg, Ritvik Vasan, Calysta Yan, Joy E. Arakaki, Matte Bailey, Ben Berry, Antoine Borensztejn, Eva M. Brown, Sara Carlson, Julie A. Cass, Basudev Chaudhuri, Kimberly R. Cordes Metzler, Mackenzie E. Coston, Zach J. Crabtree, Steve Davidson, Colette M. DeLizo, Shailja Dhaka, Stephanie Q. Dinh, Thao P. Do, Justin Domingus, Rory M. Donovan-Maiye, Alexandra J. Ferrante, Tyler J. Foster, Christopher L. Frick, Griffin Fujioka, Margaret A. Fuqua, Jamie L. Gehring, Kaytlyn A. Gerbin, Tanya Grancharova, Benjamin W. Gregor, Lisa J. Harrylock, Amanda Haupt, Melissa C. Hendershott, Caroline Hookway, Alan R. Horwitz, H. Christopher Hughes, Eric J. Isaac, Gregory R. Johnson, Brian Kim, Andrew N. Leonard, Winnie W. Leung, Jordan J. Lucas, Susan A. Ludmann, Blair M. Lyons, Haseeb Malik, Ryan McGregor, Gabe E. Medrash, Sean L. Meharry, Kevin Mitcham, Irina A. Mueller, Timothy L. Murphy-Stevens, Aditya Nath, Angelique M. Nelson, Sandra A. Oluoch, Luana Paleologu, T. Alexander Popiel, Megan M. Riel-Mehan, Brock Roberts, Lisa M. Schaefbauer, Magdalena Schwarzl, Jamie Sherman, Sylvain Slaton, M. Filip Sluzewski, Jacqueline E. Smith, Youngmee Sul, Madison J. Swain-Bowden, W. Joyce Tang, Derek J. Thirstrup, Daniel M. Toloudis, Andrew P. Tucker, Veronica Valencia, Winfried Wiegraebe, Thushara Wijeratna, Ruian Yang, Rebecca J. Zaunbrecher, Ramon Lorenzo D. Labitigan, Adrian L. Sanborn, Graham T. Johnson, Ruwanthi N. Gunawardane, Nathalie Gaudreault, Julie A. Theriot, and Susanne M. Rafelski
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Multidisciplinary - Abstract
Understanding how a subset of expressed genes dictates cellular phenotype is a considerable challenge owing to the large numbers of molecules involved, their combinatorics and the plethora of cellular behaviours that they determine1,2. Here we reduced this complexity by focusing on cellular organization—a key readout and driver of cell behaviour3,4—at the level of major cellular structures that represent distinct organelles and functional machines, and generated the WTC-11 hiPSC Single-Cell Image Dataset v1, which contains more than 200,000 live cells in 3D, spanning 25 key cellular structures. The scale and quality of this dataset permitted the creation of a generalizable analysis framework to convert raw image data of cells and their structures into dimensionally reduced, quantitative measurements that can be interpreted by humans, and to facilitate data exploration. This framework embraces the vast cell-to-cell variability that is observed within a normal population, facilitates the integration of cell-by-cell structural data and allows quantitative analyses of distinct, separable aspects of organization within and across different cell populations. We found that the integrated intracellular organization of interphase cells was robust to the wide range of variation in cell shape in the population; that the average locations of some structures became polarized in cells at the edges of colonies while maintaining the ‘wiring’ of their interactions with other structures; and that, by contrast, changes in the location of structures during early mitotic reorganization were accompanied by changes in their wiring.
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- 2023
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4. The Roles of Management Control: Lessons from the Apollo Program*
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Basil P. Tucker, Hank C. Alewine, Tucker, Basil P, and Alewine, Hank C
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spaceflight ,Economics and Econometrics ,qualitative method ,space accounting ,Accounting ,management control ,formal control ,Finance ,Apollo program - Abstract
The management control information used in decision-making comports with one of the two generally accepted roles—to monitor and evaluate employees to conform their behavior to achieving organizational goals (decision-influencing role), or to reduce decision uncertainty (decision-facilitating role). However, the ways in which these two roles may combine concurrently has received limited empirical attention. Thus, in this case study, archival data and evidence from 30 interviews with space sector experts are employed to evaluate how the two roles assumed by management control contributed—both individually and jointly—to the achievements of the National Aeronautics and Space Administration's Apollo program. The analysis leads to a proposed 2×2 matrix that better characterizes the roles which could be assumed by management control in decision settings. This study extends the management control literature by presenting an additionally nuanced picture of these roles, as well as the subsequent consequences that arise from their combinations. Its findings provide insight for management control development and application. Refereed/Peer-reviewed
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- 2022
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5. Psychometric Properties of an Online Administered Version of the Suicide Stroop Task
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Emma H. Moscardini and Raymond P. Tucker
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Clinical Psychology - Published
- 2022
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6. Examining the Interrelationships Among Suicide Cognitions, Suicidal Ideation, and Theoretically Derived Protective Factors
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Nicolas Oakey-Frost, Tovah Cowan, Emma H. Moscardini, Sarah Pardue-Bourgeois, Derek de Beurs, Alex Cohen, Craig J. Bryan, and Raymond P. Tucker
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Psychiatry and Mental health ,Clinical Psychology - Abstract
Several protective factors for mitigating suicidal ideation (SI) such as positive affect, reasons for living, purpose in life, meaning in life, gratitude, grit, optimism, social support, and hope have been identified and received empirical support. However, few studies have examined the interrelationships of these protective factors and the identification of protective factors most closely linked to lower levels of SI may be useful for both theory-building initiatives and improvement of suicide-specific interventions. Network analysis offers an approach for testing the relation among these constructs, SI, and suicide risk factors.A sampleThe resulting inferred network implicates strong negative influence of suicide cognitions, but not recent SI, and the strong positive influence of presence of meaning in life, trait hope, and low negative affect.Implications for dimensionality of SI versus suicide cognitions, targeting presence of meaning in life, trait hope, and negative affect in treatment, and cross-cultural variations in reasons for living are discussed. The study is limited by the cross-sectional and convenience sampling methodology.HighlightsProtective factors may have less direct influence on suicidal ideationSuicide cognitions and the suicidal mode may be of phenomenological importancePresence of meaning and trait hope may be primary targets for suicide interventions.
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- 2022
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7. Development and initial psychometric properties of the Cannabidiol Outcome Expectancies Questionnaire (CBD-OEQ)
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Katherine Walukevich-Dienst, Paige E. Morris, Raymond P. Tucker, Amy L. Copeland, and Julia D. Buckner
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Adult ,Psychiatry and Mental health ,Clinical Psychology ,Psychometrics ,Surveys and Questionnaires ,Cannabidiol ,Humans ,Dronabinol ,Factor Analysis, Statistical ,Article - Abstract
Cannabidiol (CBD), a nonpsychoactive cannabinoid, is used by many individuals to treat medical and mental health conditions, despite limited support for the efficacy of CBD for these conditions. Identification of CBD-related outcome expectancies (i.e., beliefs concerning the anticipated effects of CBD) could be useful in understanding the etiology and maintenance of CBD use and/or be useful in administration or clinical trial research. Although there are several measures of cannabis outcome expectancies, cannabis comprises several active compounds (e.g., tetrahydrocannabinol [THC], CBD). Thus, cannabis outcome expectancies may not reflect CBD-specific outcome expectancies. Yet, no known CBD-specific outcome expectancy measure exists. The present study used a three-phase, mixed-methods approach to develop and test the psychometric properties of the Cannabidiol Outcome Expectancy Questionnaire (CBD-OEQ). The CBD-OEQ assessed endorsement (i.e., how much an individual agrees/disagrees with an expected outcome) and desirability ratings (i.e., how desirable an expected outcome is). The initial item pool was administered to 600 adults who endorsed having heard of or using CBD products. Factor analyses supported a 60-item, six-factor structure. There was an initial support for internal consistency and convergent, discriminant, and incremental validity of the CBD-OEQ subscale scores in the present sample. Desirability ratings explained minimal additional variance in CBD variables for most subscales, but moderated the relationship between endorsement ratings and use behaviors for Global Negative Effects and No Effect subscales. The newly developed CBD-OEQ could be used as both a research and a clinical tool. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
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- 2022
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8. Molecular evolution of the Thrombospondin superfamily
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Richard P. Tucker and Josephine C. Adams
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Cell Biology ,Developmental Biology - Published
- 2023
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9. Substance Misuse among a Diverse Psychiatric Inpatient Sample: Suicidal Thoughts and Behaviors and Motivation to Change
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Julia D. Buckner, Raymond P. Tucker, Paige E. Morris, Caroline R. Scherzer, Kathleen A. Crapanzano, and Sarah Pardue-Bougeois
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Psychiatry and Mental health ,Applied Psychology - Abstract
Suicidal thoughts and behaviors (STBs) are among the most common reasons for admission to psychiatric inpatient units and a large percentage of these patients also engage in substance misuse. Yet, no known studies have examined whether patients with STBs admitted to inpatient psychiatry units are motivated to change their substance misuse and, if so, whether they benefit from MET-CBT for substance misuse while on the inpatient unit. This study assesses the relationship between STB and motivation to improve substance misuse among 321 (61.1% male
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- 2022
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10. Psychometric properties of the interpersonal needs questionnaire (INQ-15) in Army soldiers: Implications and future directions
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Emma H. Moscardini, Anthony Robinson, Benjamin Trachik, Michelle L. Ganulin, Matthew LoPresti, Michael N. Dretsch, Matthew Calamia, and Raymond P. Tucker
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Experimental and Cognitive Psychology ,General Psychology ,Social Sciences (miscellaneous) ,Research Article - Abstract
The Interpersonal Theory of Suicide posits that two unmet interpersonal needs, thwarted belongingness and perceived burdensomeness, interact to predict suicide desire. These two constructs are frequently assessed using the 15-item Interpersonal Needs Questionnaire (INQ-15); however, this measure has never been validated in military service members. The current study analyzed the psychometric properties of the INQ-15 in a sample of (N = 1096) military personnel stationed overseas. Results indicated that the two-factor model of the INQ-15 had a poor model fit in this population; however, a bifactor model with two specific factors representing TB and PB demonstrated good fit. As seen in previous research, perceived burdensomeness was more strongly related to suicidal ideation severity than thwarted belongingness. Implications and future directions for research are discussed.
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- 2022
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11. Exploring mental health and help-seeking attitudes among sexual minoritized adults in Utah
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James S. McGraw, D. Nicolas Oakey-Frost, G. Tyler Lefevor, Meagan Docherty, and Raymond P. Tucker
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Gender Studies ,General Psychology - Published
- 2023
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12. Internal entrapment and fearlessness about death as precipitants of suicidal thoughts and planning in the context of post‐traumatic stress disorder
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Raymond P. Tucker, Alexis M. May, D Nicolas Oakey-Frost, Julia A. Harris, AnnaBelle O. Bryan, and Craig J. Bryan
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Suicide attempt ,Public Health, Environmental and Occupational Health ,Traumatic stress ,Poison control ,Suicide, Attempted ,Context (language use) ,Primary care ,Suicide prevention ,United States ,Suicidal Ideation ,Stress Disorders, Post-Traumatic ,Psychiatry and Mental health ,Clinical Psychology ,Entrapment ,Cross-Sectional Studies ,Moderated mediation ,mental disorders ,Humans ,Psychology ,Clinical psychology - Abstract
Background The relationship between post-traumatic stress disorder (PTSD) and suicidal thoughts and behaviors (STB) has been extensively studied but explanatory mechanisms remain inconclusive. Entrapment is one variable that evinces a mechanistic relationship with PTSD and STB. The current study examined the indirect effect of PTSD screen on suicide ideation (SI), planning, and likelihood of future suicide attempt through internal (IE) and external entrapment (EE), moderated by levels of fearlessness about death (FAD). Method The cross-sectional sample consisted of military service members and civilians recruited from primary care clinics across the United States (N = 2690). Results Moderated mediation models indicated an indirect relationship between a positive PTSD screen, past-month SI, and past-month suicide planning through IE but not EE at low, moderate, and high levels of FAD. These relationships were replicated for the association between positive PTSD screen and concurrent self-rated likelihood of a future suicide attempt through both IE and EE at moderate and high levels of FAD. Conclusions Phenomenological implications are discussed, including IE as a mechanism of action in the PTSD/SI pathway and FAD as necessary to potentiate suicidal planning for those experiencing IE.
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- 2021
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13. Variations of accessory thoracic muscles identified in the ethnically diverse whole-body donation population in Northern California
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Hana Anderson, Jennifer A. Weil, and Richard P. Tucker
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Histology ,Anatomy - Abstract
Accessory thoracic muscles in humans are relatively common and it is important to draw awareness to their variable presentations and potential clinical implications owing to their close association with the axilla. Here we report four cases of accessory thoracic muscle variations identified in the ethnically diverse whole-body donation population in Northern California (4 out of 48 donors, 8.3%). Of these, combined presentations of thoracic accessory muscles were observed in two of the donors, one involving bilateral axillary arches and a pectoralis quartus on the left and the other a unilateral axillary arch on the left and bilateral pairs of pectoral fascicles. In the former, the proximal ends of the left axillary arch and pectoralis quartus joined to form a common aponeurosis which inserted onto the deep tendon of the pectoralis major; in the latter, the pectoral fascicles originated from the surface of the ribs and inserted into the deep surface of the pectoralis major muscle. In the other two donors, unilateral axillary arches were observed. Our observations illustrate that accessory thoracic muscles, in isolated as well as combined forms, are commonplace in the general population. We also describe the proposed embryonic origins of these accessory muscles, which may reflect their frequent occurrence, and potential clinical implications of these muscles, as discussed in literature.
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- 2022
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14. A cadaveric analysis of anatomical variations of the anterior belly of the digastric muscle
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Richard P. Tucker and Hana Anderson
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education.field_of_study ,Histology ,Mandibular symphysis ,Digastric muscle ,Dissection ,Accessory muscle ,Population ,Arteries ,Mandible ,Anatomy ,Biology ,Muscles of respiration ,medicine.anatomical_structure ,Neck Muscles ,Cadaver ,Suprahyoid muscles ,medicine ,Humans ,Gross anatomy ,education - Abstract
Background: The anterior belly of the digastric muscle (ABDM) presents highly variable and frequent anatomical variations. Since the ABDM functions as a landmark for clinical procedures involving the submental region, it is important to have a comprehensive understanding of its variations. In this study, we sought to improve our knowledge of ABDM variations in the ethnically diverse whole-body donor population in Northern California. Specific aims were: (1) to determine the frequency of ABDM and anterior belly (AB) accessory muscle variations in cadavers donated to the UC Davis Body Donation Programme, (2) to classify these variations identified in this population using the previously proposed nomenclatures by Yamada (1935) and Zlabek (1933), and (3) to investigate the innervation and arterial supply to the representative ABDM and AB accessory muscle variations. Materials and methods: During the 2018 and 2019 gross anatomy dissection laboratories at the UC Davis School of Medicine, the submental regions of 48 cadavers were examined and classified. Results: Fifteen (31.2%) cadavers presented ABDM and AB accessory muscle variations. These variations were clearly categorised using the morphology of the ABDMs and attachments of the AB accessory muscles. We also identified three previously unreported types of variations, two of which presented the fusion of right and left ABDMs and one presenting an ectopic tubercle beneath the mandibular symphysis to which a pair of AB accessory muscles were attached. Conclusions: Anterior belly of the digastric muscle variations were found in 1 in 3 individuals in the local Northern California population. Knowledge of the prevalence and common patterns of ABDM variations in the general population would be valuable information when an operation or examination is performed in the submental region.
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- 2021
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15. Development and Initial Validation of a Scale Assessing Suicide-Specific Rumination: The Suicide Rumination Scale
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Thomas E. Joiner, Megan L. Rogers, Michael D. Anestis, Claire Houtsma, Keyne C. Law, and Raymond P. Tucker
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Adult ,050103 clinical psychology ,Suicide, Attempted ,050109 social psychology ,Sample (statistics) ,Suicidal Ideation ,Risk Factors ,Item response theory ,medicine ,Humans ,0501 psychology and cognitive sciences ,Measurement invariance ,Students ,Suicidal ideation ,Applied Psychology ,Suicide attempters ,05 social sciences ,Suicide ,Clinical Psychology ,Convergent validity ,Scale (social sciences) ,Rumination ,Self Report ,medicine.symptom ,Psychology ,Clinical psychology - Abstract
Suicide-specific rumination, a repetitive mental fixation on one’s suicidal thoughts and intentions, may influence the transition from suicidal thoughts to behaviors. Research on suicide-specific rumination has been hindered by the lack of an independent measurement tool. This article presents the development and validation of a self-report measure of suicide-specific rumination across several samples with lifetime suicidal ideation (Sample 1: N = 494 students; Sample 2: N = 219 community members; Sample 3: N = 128 adults at high risk for suicide). The Suicide Rumination Scale (SRS) item pool was reduced from a pool of 41 items to 8 items that are highly discriminant and of varying levels of difficulty. The SRS demonstrated measurement invariance, convergent validity, and nonredundancy with related measures. Importantly, the SRS differentiated suicide attempters from ideators, suggesting its potential clinical relevance. Overall, these findings suggest that the SRS is a valid and incrementally useful measure of suicide-specific rumination.
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- 2021
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16. Vanishing down the black hole of reviewing delays
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Basil P. Tucker and Tucker, Basil P
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research ,evaluation ,Accounting ,Economics, Econometrics and Finance (miscellaneous) ,submitting authors - Published
- 2023
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17. Defeat, Entrapment, and Hopelessness: Clarifying Interrelationships between Suicidogenic Constructs
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D. Nicolas Oakey-Frost, Emma H. Moscardini, Kirsten Russell, Susan Rasmussen, Robert J. Cramer, and Raymond P. Tucker
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Suicide ,Cross-Sectional Studies ,defeat ,entrapment ,hopelessness ,suicidal ideation ,factor structure ,theory ,Health, Toxicology and Mutagenesis ,Public Health, Environmental and Occupational Health ,BF ,Humans ,Students ,Self Concept ,Suicidal Ideation - Abstract
Psychological theories of suicide posit conceptually similar constructs related to the development of suicidal thinking. These constructs often evince high-magnitude interrelationships across studies. Within these theories, defeat, entrapment and hopelessness standout as conceptually and quantitatively similar. Theoretical improvements may be facilitated through clarifying the subscale and item-level similarities among these constructs. Factor analytic and phenomenological work has demonstrated equivocal evidence for a distinction between defeat and entrapment; hopelessness is not typically analyzed together with defeat and entrapment despite evidence of large-magnitude interrelationships. This study explored the interrelationships among the foregoing constructs within a sample of undergraduate students (N = 344) from two universities within the Southeastern United States. Participants, oversampled for lifetime history of suicidal ideation and attempts, completed an online cross-sectional survey assessing defeat, entrapment, hopelessness and SI. Exploratory factor and parallel analyses demonstrated support for a one factor solution when analyzed at subscale level of the three measures as well as when all items of the three measures were analyzed together. Ad hoc exploratory structural equation modeling (ESEM) bifactor results evinced support for the existence of a single, general factor at the item level. Item level communalities and bifactor fit indices suggest that hopelessness may be somewhat distinct from defeat and entrapment. Clinical and theoretical implications are discussed in the context of study limitations.
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- 2022
18. An analysis of suicidal thoughts and behaviors among transgender and gender diverse adults
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Farida N Yada, Jessamyn Bowling, Robert J. Cramer, Ryan M. Hill, Franck Diaz-Garelli, Andrea R. Kaniuka, James M Macchia, and Raymond P. Tucker
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Health (social science) ,Social Psychology ,Epidemiology ,Protective factor ,Suicide prevention ,Minority stress ,030227 psychiatry ,Sexual minority ,03 medical and health sciences ,Psychiatry and Mental health ,Social support ,0302 clinical medicine ,Transgender ,medicine ,030212 general & internal medicine ,Risk factor ,medicine.symptom ,Psychology ,Suicidal ideation ,Clinical psychology - Abstract
Suicidal thoughts and behaviors (STBs) remain a pressing public health problem for transgender and gender diverse (TGD) persons. The goal of this study was to apply social-ecological and minority stress frameworks to identify individual and interpersonal-level TGD-specific STB risk and protective factors. This is a secondary analysis of the 2015 United States Transgender Health Survey, a comprehensive cross-sectional health assessment of a national sample of TGD adults (N = 27,658). Chi-square and Analysis of Variance (ANOVA) were used to identify bivariate correlates of 12-month and lifetime suicidal ideation (SI) and suicide attempt (SA). Logistic regression was employed to identify the strongest STB risk and protective factors across levels. Sexual minority identification, racial minority identification, and having a disability were lifetime STB risk factors. TGD identity, sexual minority identification, racial minority identification (SA only), lower education, lower income, military experience, having a disability, and being uninsured were 12-month STB risk factors. Psychological distress was the most robust STB risk factor. Workplace discrimination, family rejection, healthcare discrimination, and childhood bias-based victimization were lifetime STB risk factors. All forms of discrimination and victimization (with the exception of family rejection for SI) were 12-month STB risk factors. Family and coworker support were protective factors for lifetime SA (but not SI) and all 12-month STBs. Being less out about TGD identity was a protective factor for STBs (except for 12-month SI). Findings support social-ecological and minority stress STB risk frameworks. Recommendations are provided for a comprehensive approach to TGD suicide prevention.
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- 2021
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19. Brief motivational interviewing–based interventions for opioid misuse in hospital settings
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Julia D. Buckner, Lannis L. Tynes, Raymond P. Tucker, Katherine Walukevich-Dienst, and Kathleen A Crapanzano
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medicine.medical_specialty ,Prescription Drug Misuse ,business.industry ,medicine.medical_treatment ,Motivational interviewing ,Psychological intervention ,Opioid use disorder ,medicine.disease ,Brief psychotherapy ,Opioid ,Intervention (counseling) ,medicine ,business ,Psychiatry ,medicine.drug - Published
- 2021
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20. 475 DEVELOPING A VIRTUAL CARE HOME SUPPORT FORUM DURING THE COVID-19 PANDEMIC
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E Hadley, P Tucker, S Cosmos, R Baker, L Steward, A Flores, I Wilkinson, S Ngwenya, A Robinson, J Harmer, R Hartley, and L Ferrigan
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Aging ,Government ,Coronavirus disease 2019 (COVID-19) ,Care homes ,business.industry ,Mortality rate ,education ,General Medicine ,Peer support ,medicine.disease ,Outreach ,Abstracts ,AcademicSubjects/MED00280 ,Pandemic ,medicine ,Medical emergency ,Geriatrics and Gerontology ,business ,Cause of death - Abstract
Introduction COVID-19 has had a devastating effect on care homes, increasing both morbidity and mortality of residents and staff. Between 2 March and 12 June 2020, COVID-19 was the main cause of death in male care home residents (33.5%) and second for female (26.6%).1 By 1 May 2020, the death rate from all causes in care homes exceeded that in hospital (6,409 versus 6,397).2 Thus, care homes had to rapidly adapt to facilitate safe care of patients and staff. Method An expert outreach team visited a number of care homes in Surrey and Sussex to explore COVID-19 issues in care homes. Key themes were identified that informed topics for the Virtual Care Home Forum, where a series of virtual teaching, training and peer support sessions were hosted either live or on-demand, accessible for all care home staff. Results 12 sessions were held with an average attendance of 25 people, predominantly care home managers and community healthcare professionals. Real time qualitative feedback was collected and an electronic survey was completed at the end of the series which showed 100% felt the sessions had improved their understanding of the topic, 100% felt the knowledge and skills obtained from the sessions would be useful in their job, 87.5% agreed the sessions would impact or change their practise and 100% felt more supported during the pandemic. Conclusion It has been an unprecedented year for the NHS, and the care home sector has suffered significantly. In order to provide the best level of care for patients and support for our community colleagues, we must work collaboratively, including provision of education and training. To ensure equal access for all, maintaining user-safety and compliance with government legislation, virtual webinars proved to be an excellent modality. We plan to continue providing training, teaching and support through this means in the future.
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- 2021
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21. Perfectionistic Self-Presentation, Socially Prescribed Perfectionism, Self-Oriented Perfectionism, Interpersonal Hopelessness, and Suicidal Ideation in U.S. Adults: Reexamining the Social Disconnection Model
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Raymond P. Tucker, Emma H. Moscardini, Matthew Calamia, and Anthony Robinson
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Adult ,050103 clinical psychology ,media_common.quotation_subject ,Interpersonal communication ,medicine.disease_cause ,Suicidal Ideation ,03 medical and health sciences ,Presentation ,0302 clinical medicine ,medicine ,Humans ,0501 psychology and cognitive sciences ,Suicidal ideation ,media_common ,Loneliness ,05 social sciences ,Perfectionism (psychology) ,Self Concept ,030227 psychiatry ,Psychiatry and Mental health ,Clinical Psychology ,Cross-Sectional Studies ,Perfectionism ,Disconnection ,medicine.symptom ,Psychology ,Clinical psychology - Abstract
Research has linked perfectionism to increased suicidal ideation (SI), although less is known regarding the mechanisms that explain this relation. The Perfectionism Social Disconnection Model (PSDM) posits that interpersonal aspects of perfectionism cause interpersonal problems (e.g., hostility, loneliness) which in turn increase a person's risk for experiencing SI. The present study aimed to replicate and extend previous findings related to the PSDM and SI using measures of interpersonal hopeless and general hopelessness.Tenets of the PSDM were tested in a sample of 313 U.S. adults with a history of SI, by determining whether experiences of general hopelessness and interpersonal hopelessness explained the relation between three types of perfectionism: perfectionistic self-presentation (PSP), socially prescribed perfectionism (SPP), and self-oriented perfectionism (SOP).Results indicated that PSP, SPP, and SOP were positively associated with SI, general hopelessness, and interpersonal hopelessness.The relation between aspects of perfectionism and SI demonstrated an indirect effect through interpersonal hopelessness only.These results lend support to the PSDM's assertion that interpersonal problems aid in explaining the relation between perfectionism and SI. The current study was limited by the cross-sectional nature of the study as well as the homogenous sample. Implications for research and clinical work are discussed.HIGHLIGHTSAspects of perfectionism are related to suicidal ideationAspects of perfectionism are related to interpersonal hopelessnessInterpersonal hopelessness explains why perfectionism and suicidal ideation are related.
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- 2021
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22. Work and suicide: An interdisciplinary systematic literature review
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Kayla B. Follmer, Matt C. Howard, Mickey B. Smith, Elise C. Van Zandt, and Raymond P. Tucker
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Organizational Behavior and Human Resource Management ,Systematic review ,Sociology and Political Science ,Work (electrical) ,Well-being ,Psychology ,General Psychology ,Applied Psychology ,Occupational safety and health ,Depression (differential diagnoses) ,Clinical psychology - Published
- 2021
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23. Indirect effects of soldier healthy eating and physical activity on suicidal ideation through psychological health symptoms in active-duty military
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Nicolas Oakey-Frost, Michelle L. Ganulin, Raymond P. Tucker, Michael N. Dretsch, Benjamin Trachik, and Mathew L. LoPresti
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PART II: PREVENTION AND TREATMENT - Clinical Practice ,050103 clinical psychology ,medicine.medical_specialty ,05 social sciences ,Physical activity ,Experimental and Cognitive Psychology ,Healthy eating ,Suicide rates ,030227 psychiatry ,Psychological health ,03 medical and health sciences ,0302 clinical medicine ,medicine ,0501 psychology and cognitive sciences ,medicine.symptom ,Psychology ,Psychiatry ,Suicidal ideation ,General Psychology ,Social Sciences (miscellaneous) ,Depression (differential diagnoses) ,Active duty military - Abstract
The suicide rate within the military continues to rise. New approaches for prevention are needed which capitalize on existing strengths, are scalable at multiple levels, and promote mental fortitude. Healthy eating (HE) and physical activity (PA) represent scalable practices and methods for promoting mental health and protective factors within the military. A cross-sectional sample of N = 1019 active-duty Soldiers completed self-report measures of HE, PA, major depressive disorder (MDD) symptoms, generalized anxiety disorder (GAD) symptoms, and suicidal ideation (SI). Moderated mediation analyses using bootstrapping techniques were used to determine if HE and PA interact to relate to lower SI through reduced psychological health (PH) symptoms. Results indicated an indirect effect of HE on presence versus absence of past month SI through GAD symptoms at moderate-to-high levels of cardiovascular PA. A similar pattern was demonstrated for strength training PA where HE had an indirect effect on past month SI through GAD symptoms at only high levels of strength training PA. HE was indirectly related to lower MDD symptoms at all levels of cardiovascular PA and moderate to high levels of strength training PA. Study limitations and implications for secondary suicide prevention strategies within the military are discussed.
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- 2021
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24. Factor Structure and Measurement Invariance of the Suicide Status Form-IV
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Nicolas Oakey-Frost, Ross Divers, Emma H. Moscardini, Sarah Pardue-Bourgeois, Jessica Gerner, Anthony Robinson, Eathan Breaux, Kathleen A. Crapanzano, Matthew Calamia, David A. Jobes, and Raymond P. Tucker
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Clinical Psychology ,Applied Psychology - Abstract
The Suicide Status Form-IV (SSF-IV) is the measure used in the Collaborative Assessment and Management of Suicidality (CAMS). The SSF-IV Core Assessment measures various domains of suicide risk. Previous studies established a two-factor solution in small, homogeneous samples; no investigations have assessed measurement invariance. The current investigation sought to replicate previous factor analyses and used measurement invariance to identify differences in the Core Assessment by race and gender. Adults ( N = 731) were referred for a CAMS consultation after exhibiting risk for suicide. Confirmatory factor analyses indicated good fit for both one- and two-factor solutions while the two-factor solution is potentially redundant. Configural, metric, and scalar invariance held across race and gender. Ordinal logistic regression models indicated that neither race nor gender significantly moderated the relationship between the Core Assessment total score and clinical outcomes. Findings support a measurement invariant, one-factor solution for the SSF-IV Core Assessment.
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- 2023
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25. Submarine groundwater discharge drives nitrous oxide source/sink dynamics in a metropolitan estuary
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James P. Tucker, Rogger E. Correa, Luke C. Jeffrey, Haile Arefayne Shishaye, Isaac R. Santos, Douglas R. Tait, Damien T. Maher, and Michael J. Reading
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Hydrology ,Source–sink dynamics ,geography ,geography.geographical_feature_category ,010504 meteorology & atmospheric sciences ,Estuary ,Nitrous oxide ,010501 environmental sciences ,Aquatic Science ,Oceanography ,01 natural sciences ,Metropolitan area ,Submarine groundwater discharge ,chemistry.chemical_compound ,chemistry ,Environmental science ,0105 earth and related environmental sciences - Published
- 2021
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26. Contemporary methods in delayed discounting: Applications for suicidology with simulation
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Raymond P. Tucker, Connor H. G. Patros, Shawn P. Gilroy, and Brian W. Bauer
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050103 clinical psychology ,Discounting ,Computer science ,05 social sciences ,Public Health, Environmental and Occupational Health ,Suicidology ,Reproducibility of Results ,Poison control ,Context (language use) ,Behavioral economics ,Suicide prevention ,030227 psychiatry ,Task (project management) ,03 medical and health sciences ,Psychiatry and Mental health ,Clinical Psychology ,0302 clinical medicine ,Delay Discounting ,Reward ,Risk analysis (engineering) ,Humans ,0501 psychology and cognitive sciences ,Reliability (statistics) - Abstract
Objective To present an approach for integrating recently developed methods in behavioral economics into suicidology research. At present, existing applications of delay discounting in suicidology have focused predominantly on hypothetical choices related to monetary value as a proxy to "risky" choices linked to unsafe or suicidal behavior. In this report, we outline a more targeted approach that directly indexes choices related to treatment in suicide prevention initiatives and incorporates the strengths afforded by multi-level modeling. This more targeted approach precludes the need for multi-step comparisons (improving power), avoids compressing choice variability across delays into individual values (improving precision), and better accommodates decision-making at the upper and lower extremes (improving reliability). Method We present this analytical approach within the context of a Hypothetical Firearm Decision-making Task with simulated participants. A simulated study is provided to illustrate how this approach can be used to evaluate how individuals make temporally delayed decisions related to treatment for suicidal behavior (i.e., temporarily limiting their access to firearms while undergoing treatment). Results and conclusions The results of this simulated study are provided to illustrate how more advanced behavioral decision-making models can be used to supplement existing research methods in suicidology.
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- 2021
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27. The causes and effects of indigenous C4 grass expansion into a hyper-diverse fynbos shrubland
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N. M. Munyai, Edmund C. February, C. P. Tucker, and William J. Bond
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0106 biological sciences ,geography ,geography.geographical_feature_category ,Land use ,Community ,Ecology ,010604 marine biology & hydrobiology ,Field experiment ,media_common.quotation_subject ,Growing season ,Biology ,010603 evolutionary biology ,01 natural sciences ,Competition (biology) ,Shrubland ,Disturbance (ecology) ,Species richness ,Ecology, Evolution, Behavior and Systematics ,media_common - Abstract
The cool season rainfall at our study site should favour C3 rather than C4 grasses. There are, however, several locations where C4 grasses have become dominant, suggesting that rainfall seasonality is not a constraint on distribution. Here, we explored the limitations on C4 grass distribution in a fynbos shrubland. Using δ13C values of SOM, we determined when these grasses had established. We also looked at the role of roads as conduits for establishment and asked what impact these grasses may have on fynbos species richness. We then conducted a field experiment designed to examine the extent to which soil moisture, nutrient availability, and competition with fynbos for resources influence the establishment and growth of the grasses. Finally using aerial photography, we explored the role of changes in land use on distribution. Our results showed that the establishment is recent, that roads may be acting as conduits, and that with establishment, there is a reduction in fynbos species richness and diversity. Disturbance and removing below-ground competition for resources open the system to establishment in wetter areas. This study is the first to look at the potential for C4 grasses expanding into cool season rainfall shrublands such as in Western Australia and South Africa. What is interesting about these results is that C4 grasses can establish and dominate in a cool season rainfall regime. Rather than temperature of the growing season, it is competition for resources from fynbos that prevents these grasses from encroaching.
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- 2021
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28. The Genetics of Prey Susceptibility to Myxobacterial Predation: A Review, Including an Investigation into Pseudomonas aeruginosa Mutations Affecting Predation by Myxococcus xanthus
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Egbert Hoiczyk, Nicholas P. Tucker, Natashia Sydney, Jeffery M.T. So, David E. Whitworth, and Martin T. Swain
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Genetics ,Physiology ,ved/biology ,Pseudomonas aeruginosa ,Antimicrobial peptides ,ved/biology.organism_classification_rank.species ,Cell Biology ,Biology ,Generalist and specialist species ,medicine.disease_cause ,biology.organism_classification ,Applied Microbiology and Biotechnology ,Biochemistry ,Microbiology ,Predation ,Myxobacteria ,medicine ,Model organism ,Myxococcus xanthus ,Bacteria ,Biotechnology - Abstract
Bacterial predation is a ubiquitous and fundamental biological process, which influences the community composition of microbial ecosystems. Among the best characterised bacterial predators are the myxobacteria, which include the model organism Myxococcus xanthus. Predation by M. xanthus involves the secretion of antibiotic metabolites and hydrolytic enzymes, which results in the lysis of prey organisms and release of prey nutrients into the extracellular milieu. Due to the generalist nature of this predatory mechanism, M. xanthus has a broad prey range, being able to kill and consume Gram-negative/positive bacteria and fungi. Potential prey organisms have evolved a range of behaviours which protect themselves from attack by predators. In recent years, several investigations have studied the molecular responses of a broad variety of prey organisms to M. xanthus predation. It seems that the diverse mechanisms employed by prey belong to a much smaller number of general “predation resistance” strategies. In this mini-review, we present the current state of knowledge regarding M. xanthus predation, and how prey organisms resist predation. As previous molecular studies of prey susceptibility have focussed on individual genes/metabolites, we have also undertaken a genome-wide screen for genes of Pseudomonas aeruginosa which contribute to its ability to resist predation. P. aeruginosa is a World Health Organisation priority 1 antibiotic-resistant pathogen. It is metabolically versatile and has an array of pathogenic mechanisms, leading to its prevalence as an opportunistic pathogen. Using a library of nearly 5,500 defined transposon insertion mutants, we screened for “prey genes”, which when mutated allowed increased predation by a fluorescent strain of M. xanthus. A set of candidate “prey proteins” were identified, which shared common functional roles and whose nature suggested that predation resistance by P. aeruginosa requires an effective metal/oxidative stress system, an intact motility system, and mechanisms for de-toxifying antimicrobial peptides.
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- 2021
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29. Altering preferences for suicide crisis resources using the decoy nudge: Evidence of context-dependent effects in suicide prevention decision making
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Tony T. Wells, Daniel W. Capron, Raymond P. Tucker, Brian W. Bauer, and Aleksandrs Karnick
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Adult ,Male ,Suicide Prevention ,education.field_of_study ,Suicide attempt ,Nudge theory ,Decision Making ,Population ,Suicidology ,Poison control ,Suicide, Attempted ,Middle Aged ,Suicide prevention ,Preference ,Suicidal Ideation ,Young Adult ,Psychiatry and Mental health ,Clinical Psychology ,Humans ,Female ,Psychology ,Suicide crisis ,education ,Social psychology - Abstract
OBJECTIVE Suicide is the 10th leading cause of death in the United States. There are several important decisions that could confer later risk to a suicide attempt (e.g., how to store lethal means). Therefore, understanding how people make decisions that are relevant for suicide risk is an important area of study for suicidology. Human behavior diverges from perfectly rational economic decision making according to observable patterns based on predictable cognitive processes. Nudges attempt to diminish, leverage, or circumvent these deviations to increase the probability of a desired choice being selected or behavior being performed. One deviation from rationality is that human choice is context dependent. This deviation can be observed by introducing an objectively inferior alternative option (a decoy) into a choice array that alters an individual's preference. Using decoys could be one way to nudge people toward best practices in suicide prevention work. METHOD This study examined if decoys could reliably alter participant preferences for suicide prevention resources using a hypothetical scenario in three separate online samples (i.e., general population, participants with recent suicidal thoughts, gun owners). RESULTS Our results found that introducing a slightly (but objectively) worse version of an existing suicide prevention resource increased the preference toward the slightly better option. CONCLUSIONS These findings indicate that using decoys could be an effective nudge for influencing people's preference toward best practices. Most important, these findings highlight the importance of context effects on choice preference in suicide research and prevention efforts, as well as suggest irrational decision-making processes in suicide-relevant decision making. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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- 2021
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30. Honor endorsement and increased firearm purchasing behavior and intentions during the COVID-19 pandemic: Evidence from three investigations of U.S. males
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Jarrod E. Bock, Samantha E. Daruwala, Raymond P. Tucker, Stephen D. Foster, Shelby L. Bandel, John F. Gunn, and Michael D. Anestis
- Abstract
Objective: Firearm sales in the U.S. have surged throughout the COVID-19 pandemic. Consistent with pre-pandemic trends, individuals tended to purchase firearms for self-protection during COVID-19. In addition to perceptions of both general and pandemic-specific threats motivating protective ownership, this form of ownership is also motivated by those that endorse masculinity norms in U.S. honor cultures. The present research examined the relative motivating influences of various threat perceptions and masculine honor endorsement in predicting reasons for non-COVID-19 firearm ownership, firearm purchasing during COVID-19, and purchase intentions.Method: Three separate samples (total N=2,483) of mostly White U.S. men completed online surveys during different months of COVID-19. Results: Honor endorsement was higher among (1) protective firearm owners compared to non-owners and non-protective owners, (2) firearm owners who purchased a firearm during COVID-19 compared to non-owners and non-purchasing owners, and (3) firearm owners with intentions to purchase firearms in the next year compared to those without intentions and undecided owners. Relative to other predictors (e.g., COVID-19 concerns, dangerous world beliefs), honor endorsement was consistently the strongest predictor of these outcomes.Conclusions: Findings add to the literature by highlighting the strength of honor-endorsement in motivating (protective) firearm ownership. Implications for interpersonal violence and suicide are discussed.
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- 2022
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31. A Cadaveric Analysis of Morphological Variations of Pectoral Girdle Muscles: Axillary Arch and Coexisting Pectoralis Muscle Variations
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Hana Anderson, Richard P. Tucker, and Jennifer A. Weil
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Genetics ,Molecular Biology ,Biochemistry ,Biotechnology - Published
- 2022
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32. Student perceptions of multicultural training and program climate in clinical psychology doctoral programs
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Raymond P. Tucker, Samantha J. Gregus, Jennifer L. Callahan, Kimberly T. Stevens, and Nicholas P. Seivert
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Student perceptions ,Medical education ,Multicultural education ,Perception ,media_common.quotation_subject ,Multiculturalism ,Cultural sensitivity ,Psychology ,Training (civil) ,General Psychology ,Education ,media_common ,Diversity (politics) - Published
- 2020
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33. Evaluation of UV aerosol retrievals from an ozone lidar
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S. Kuang, B. Wang, M. J. Newchurch, K. Knupp, P. Tucker, E. W. Eloranta, J. P. Garcia, I. Razenkov, J. T. Sullivan, T. A. Berkoff, G. Gronoff, L. Lei, C. J. Senff, A. O. Langford, T. Leblanc, and V. Natraj
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Atmospheric Science ,Ozone ,010504 meteorology & atmospheric sciences ,Backscatter ,lcsh:TA715-787 ,lcsh:Earthwork. Foundations ,01 natural sciences ,lcsh:Environmental engineering ,Aerosol ,010309 optics ,Troposphere ,chemistry.chemical_compound ,Lidar ,chemistry ,Extinction (optical mineralogy) ,0103 physical sciences ,Environmental science ,Tropospheric ozone ,lcsh:TA170-171 ,Spectral resolution ,0105 earth and related environmental sciences ,Remote sensing - Abstract
Aerosol retrieval using ozone lidars in the ultraviolet spectral region is challenging but necessary for correcting aerosol interference in ozone retrieval and for studying the ozone–aerosol correlations. This study describes the aerosol retrieval algorithm for a tropospheric ozone lidar, quantifies the retrieval error budget, and intercompares the aerosol retrieval products at 299 nm with those at 532 nm from a high spectral resolution lidar (HSRL) and with those at 340 nm from an AErosol RObotic NETwork radiometer. After the cloud-contaminated data are filtered out, the aerosol backscatter or extinction coefficients at 30 m and 10 min resolutions retrieved by the ozone lidar are highly correlated with the HSRL products, with a coefficient of 0.95 suggesting that the ozone lidar can reliably measure aerosol structures with high spatiotemporal resolution when the signal-to-noise ratio is sufficient. The actual uncertainties of the aerosol retrieval from the ozone lidar generally agree with our theoretical analysis. The backscatter color ratio (backscatter-related exponent of wavelength dependence) linking the coincident data measured by the two instruments at 299 and 532 nm is 1.34±0.11, while the Ångström (extinction-related) exponent is 1.49±0.16 for a mixture of urban and fire smoke aerosols within the troposphere above Huntsville, AL, USA.
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- 2020
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34. Methodological Insights Jumping through hoops: publishing interview-based management accounting research
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Basil P. Tucker
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business.industry ,media_common.quotation_subject ,05 social sciences ,Economics, Econometrics and Finance (miscellaneous) ,Accounting research ,Face (sociological concept) ,050201 accounting ,Participant observation ,Presentation ,Publishing ,Accounting ,0502 economics and business ,Management accounting ,Credibility ,Engineering ethics ,Sociology ,business ,050203 business & management ,Qualitative research ,media_common - Abstract
PurposeThis reflection is aimed primarily at doctoral students, early career researchers and more experienced accounting researchers seeking to undertake interview-based academic accounting research. It is specifically designed to identify and confront some common obstacles to publishing interview-based management accounting research.Design/methodology/approachThis reflection is autoethnographic in the sense that it is based primarily on my publication experience, observations and reflections as an author/co-author and also as a reviewer and editor/editorial board member in submitting, reviewing and evaluating interview-based management accounting research. It therefore adopts a form of participant observation in approach in which the author seeks to provide to readers a sense of “being there” insofar as addressing the barriers to publishing interview-based management accounting research.FindingsWhilst the insights that interview-based accounting research can offer are well established, there remain practical obstacles in publishing this form of research. These obstacles – portrayed in this paper as “hoops” through which authors must jump – largely reduce to challenges in convincing the reader of the credibility and authenticity of their approach and demonstrating the trustworthiness and dependability of the findings and conclusions reached.Research limitations/implicationsThe academic and practical issues raised in this commentary will assist emerging scholars in anticipating and dealing with the challenges they face in submitting these types of studies to academic accounting journals.Originality/valueThis paper is a critical analysis and reflection of the process of publishing interview-based accounting research. Rather than attempting to replicate the many excellent commentaries on this topic, it is designed to be of practical use to emerging scholars in the design, delivery and presentation of qualitative interview-based accounting research with a particular aim of navigating the submission and review process.
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- 2020
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35. Necessity: The Mother of Invention? The Tension Between Management Control and Creativity: Lessons from Apollo 13
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Ady James, Ian Halkett, Basil P. Tucker, Tucker, Basil, Halkett, Ian, and James, Ady
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Necessity is the mother of invention ,biology ,Tension (physics) ,media_common.quotation_subject ,Apollo ,Creativity ,biology.organism_classification ,innovation ,MCS ,Apollo 13 ,Aesthetics ,Accounting ,management control ,Business and International Management ,Psychology ,formal control ,creativity ,control/creativity ,media_common ,Management control system - Abstract
This case study develops our understanding of the ways in which management control and creativity coexist within organizations. We extend current understandings of how management control and creativity may combine by theorizing a broad typological framework comprising four basic forms. We postulate that not only can control and creativity coexist, but that they are mutually reliant and can function concurrently to differing extents within one operational entity as circumstances dictate. The case we use to illustrate our framework is based on a review of NASA documentation and first-person accounts of the ill-fated Apollo 13 mission, during which the need to manage the apparent dichotomy between control and creativity was literally a matter of life and death. Our findings serve as a foundational basis for further empirical and theoretical enquiry and offer research directions that may provide a deeper understanding of the ways in which control and creativity may combine. JEL Classifications: M00; M41.
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- 2020
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36. Anxiety Sensitivity Index-3 Suicidal Cognition Concerns: A New Measure Examining Negative Reactions to Suicidal Ideation
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Nicole S. Smith, Rachel L. Martin, Daniel W. Capron, Raymond P. Tucker, and Brian W. Bauer
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Suicide Prevention ,050103 clinical psychology ,Index (economics) ,Measure (physics) ,Anxiety ,Suicidal Ideation ,03 medical and health sciences ,Cognition ,0302 clinical medicine ,Risk Factors ,medicine ,Humans ,0501 psychology and cognitive sciences ,Risk factor ,Suicidal ideation ,05 social sciences ,Anxiety Disorders ,030227 psychiatry ,Suicide ,Psychiatry and Mental health ,Clinical Psychology ,Anxiety sensitivity ,medicine.symptom ,Psychology ,Clinical psychology - Abstract
Anxiety sensitivity cognitive concerns (ASCC), the fear of the consequences of mental dyscontrol, has been established as a risk factor for suicidal ideation (SI). Treatments targeted at reducing ASCC have been shown to reduce suicide risk. In this study, a new self-report measure, the Anxiety Sensitivity Index-3 Suicidal Cognition Concerns (ASI-3-SCC), was developed to assess sensitivity specifically to thoughts of suicide and wanting to die.Participants completed the new measure as well as measures of anxiety sensitivity, depressive symptoms, SI, and worst point SI. We hypothesized that the ASI-3-SCC would be associated with SI and worst point SI. Additionally, we hypothesized that the ASI-3-SCC would moderate the relationship between ASCC and SI.As predicted, the ASI-3-SCC was significantly associated with SI in the past two weeks and lifetime worst point SI after accounting for ASCC and depression. The ASI-3-SCC also moderated the relationship between ASCC and SI such that ASCC was related to SI at high levels of ASI-3-SCC.We suggest that the interpretation of SI and feelings of wanting to die as dangerous may lead to more attention to those thoughts when they occur and increased psychological distress associated with those thoughts. This measure will allow researchers to measure a novel construct in the literature and further examine the impact of catastrophic interpretations of suicidal thoughts.HighlightsCreated a new measure for sensitivity to thoughts of suicide and wanting to die.Suicidal cognition concerns associated with suicidal ideation in the past two weeks.Suicidal cognition concerns associated with lifetime worst point suicidal ideation.Suicidal cognition concerns moderated AS cognitive concerns and ideation relation.
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- 2020
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37. Storytelling of suicide attempt recovery and its relationship with mental health treatment-seeking attitudes and behaviors: An experimental study
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Raymond P. Tucker, Thomas Niederkrotenthaler, Mark H Zielinski, and Rachel Haydel
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050103 clinical psychology ,Universities ,Treatment seeking ,Suicide attempt ,Lived experience ,education ,05 social sciences ,Public Health, Environmental and Occupational Health ,Suicide, Attempted ,Mental health treatment ,Mental health ,03 medical and health sciences ,Mental Health ,0302 clinical medicine ,Attitude ,Humans ,0501 psychology and cognitive sciences ,030212 general & internal medicine ,Students ,Psychology ,Clinical psychology ,Storytelling - Abstract
Objective: This experimental study investigated if watching a brief video detailing an individual’s recovery following a suicide attempt increased college student mental health treatment-seeking at...
- Published
- 2020
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38. 6-Amino[1,2,5]oxadiazolo[3,4-b]pyrazin-5-ol Derivatives as Efficacious Mitochondrial Uncouplers in STAM Mouse Model of Nonalcoholic Steatohepatitis
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Joseph M. Salamoun, Stefan R. Hargett, Martina Beretta, Stephanie J. Alexopoulos, Ellen M. Olzomer, Divya P. Shah, Murray Jacob H, Webster L. Santos, Sing-Young Chen, Christopher J Garcia, Simon P. Tucker, and Kyle L. Hoehn
- Subjects
0303 health sciences ,Chemistry ,Transporter ,Pharmacology ,medicine.disease ,01 natural sciences ,Small molecule ,In vitro ,0104 chemical sciences ,Bioavailability ,010404 medicinal & biomolecular chemistry ,03 medical and health sciences ,Fibrosis ,Drug Discovery ,medicine ,Molecular Medicine ,Myocyte ,Inner mitochondrial membrane ,030304 developmental biology ,EC50 - Abstract
Small molecule mitochondrial uncouplers have recently garnered great interest for their potential in treating nonalcoholic steatohepatitis (NASH). In this study, we report the structure-activity relationship profiling of a 6-amino[1,2,5]oxadiazolo[3,4-b]pyrazin-5-ol core, which utilizes the hydroxy moiety as the proton transporter across the mitochondrial inner membrane. We demonstrate that a wide array of substituents is tolerated with this novel scaffold that increased cellular metabolic rates in vitro using changes in oxygen consumption rate as a readout. In particular, compound SHS4121705 (12i) displayed an EC50 of 4.3 μM in L6 myoblast cells and excellent oral bioavailability and liver exposure in mice. In the STAM mouse model of NASH, administration of 12i at 25 mg kg-1 day-1 lowered liver triglyceride levels and improved liver markers such as alanine aminotransferase, NAFLD activity score, and fibrosis. Importantly, no changes in body temperature or food intake were observed. As potential treatment of NASH, mitochondrial uncouplers show promise for future development.
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- 2020
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39. Fearlessness About Death is Related to Diminished Late Positive Potential Responses When Viewing Threatening and Mutilation Images in Suicidal Ideators
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Daniel W. Capron, Richard J. Macatee, Norman B. Schmidt, Brian W. Bauer, Brian J. Albanese, Edward M. Bernat, and Raymond P. Tucker
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Suicide attempters ,050103 clinical psychology ,Suicide attempt ,05 social sciences ,Experimental and Cognitive Psychology ,Physiological responses ,030227 psychiatry ,03 medical and health sciences ,Clinical Psychology ,0302 clinical medicine ,Event-related potential ,medicine ,0501 psychology and cognitive sciences ,medicine.symptom ,Psychology ,Suicidal ideation ,Quality of Life Research ,Clinical psychology ,Psychopathology - Abstract
Very few people who desire death by suicide ever make a suicide attempt, highlighting the importance of determining factors that influence the capability to enact lethal self-harm. One such factor is fearlessness about death, which has been found to be an important predictor of suicide attempts. Recently, longitudinal evidence found that fearlessness about death is positively associated with fluctuations in suicidal ideation. Efforts exploring biophysical mechanisms of suicide have found diminished physiological responses to threat/mutilation-related images in suicide attempters and in individuals who report being less fearful of death. These studies suggest that an individual with greater fearlessness about death may demonstrate a blunted response to threat/mutilation stimuli; however, this hypothesis has yet to be directly tested. This study used an electroencephalography/event-related potential paradigm to examine late positive potential (LPP) amplitude differences in an adult community sample (N = 280), as well as a subsample with current suicidal ideation (n = 62), with a high rate of psychopathology (90.1%). It was hypothesized that participants with higher fearlessness about death would show diminished responses (smaller LPP amplitude) when viewing threat/mutilation images. Results indicated that participants with suicidal ideation and elevated fearlessness about death demonstrated a blunted emotional response to threat/mutilation images but similar reactions to rewarding pleasant stimuli. These results suggest blunted LPP responses to threat/mutilation stimuli may be a potential biophysical mechanism for fearless about death.
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- 2020
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40. Integration of a Suicide-Specific Treatment Program Within a Psychiatric Residency and Large Hospital System of Care: a Twelve-Month Journey
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Kathleen Crapanzano, Raymond P. Tucker, Richard J. Vath, Katherine Walukevich-Dienst, and Mark H Zielinski
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Psychiatry and Mental health ,medicine.medical_specialty ,Hospital system ,business.industry ,MEDLINE ,Medicine ,General Medicine ,business ,Psychiatry ,Education - Published
- 2020
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41. Fun while it lasted: Executive MBA student perceptions of the value of academic research
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Glennda Scully, Basil P. Tucker, Tucker, Basil P, and Scully, Glennda
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Student perceptions ,EMBA ,accounting education ,Teaching method ,05 social sciences ,050301 education ,Student engagement ,050201 accounting ,Accounting education ,linking research and teaching ,Education ,Graduate students ,Learner engagement ,Accounting ,0502 economics and business ,student engagement ,Mathematics education ,Student learning ,Psychology ,0503 education ,Value (mathematics) - Abstract
The extent to which academic research informs both student learning and practice has been repeatedly debated in the accounting and broader academic literature. However, despite its supposed symbiotic relationship, the nexus between research and teaching, as well as research and practice, has rarely been investigated within the confines of a single study. In this research, we compare and contrast the perceptions of Executive Master of Business Administration (EMBA) students studying accounting in two Australian universities in relation to the perceived usefulness of published academic research embedded in an accounting curriculum in (i) explaining, clarifying and learning accounting principles; and (ii) informing current and future practitioners. Our findings indicate that although EMBA students readily embrace the use of accounting research in the classroom, there is a need for educators to explicitly demonstrate the credibility of academic research if the findings of such research are to be adopted in practice. Refereed/Peer-reviewed
- Published
- 2020
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42. Suicide‐Specific Cognitions, Attentional Fixation, and Worst‐Point Suicidal Ideation
- Author
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Emma H. Moscardini, Raymond P. Tucker, Craig J. Bryan, and Alix B. Aboussouan
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Suicide Prevention ,050103 clinical psychology ,Psychological intervention ,Baseline risk ,Poison control ,Suicide prevention ,Suicidal Ideation ,03 medical and health sciences ,Cognition ,0302 clinical medicine ,Risk Factors ,medicine ,Humans ,0501 psychology and cognitive sciences ,Prospective Studies ,Suicidal ideation ,05 social sciences ,Public Health, Environmental and Occupational Health ,Fixation (psychology) ,030227 psychiatry ,Psychiatry and Mental health ,Clinical Psychology ,medicine.symptom ,Psychology ,Clinical psychology - Abstract
Objective The fluid vulnerability theory of suicide posits that each person has a baseline risk for suicide, which is comprised of both stable and dynamic factors. The current study investigated the unique involvement of suicide-specific cognitions and attentional fixation on recent suicidal ideation (SI) and SI at its worst. Method Data were analyzed from a sample of N = 126 undergraduate students with a history of SI. Path analyses were used to analyze the relationship between suicide-specific cognitions, attentional fixation, and SI (current and worst point). Results Results revealed that suicide-specific cognitions were directly related to both recent SI and worst-point SI. Suicide-specific cognitions had a significant, indirect effect with worst-point SI through attentional fixation, but this effect was not significant when using recent SI. Conclusion These data support the need for interventions to target cognitive contents and contexts (e.g., fixation) to reduce escalation of SI. Future work would benefit from replicating and extending results in studies that include prospective designs and the assessment of suicidal behaviors.
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- 2020
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43. [1,2,5]Oxadiazolo[3,4-b]pyrazine-5,6-diamine Derivatives as Mitochondrial Uncouplers for the Potential Treatment of Nonalcoholic Steatohepatitis
- Author
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Stefan R. Hargett, Elizabeth S. Childress, Joseph M. Salamoun, Jose A Santiago-Rivera, Divya P. Shah, Christopher J Garcia, Webster L. Santos, Sing-Young Chen, Kyle L. Hoehn, Stephanie J. Alexopoulos, Yumin Dai, and Simon P. Tucker
- Subjects
Male ,Pyrazine ,Protonophore ,Mitochondria, Liver ,Diamines ,Mitochondrion ,01 natural sciences ,Article ,03 medical and health sciences ,chemistry.chemical_compound ,Oxygen Consumption ,Aniline ,Non-alcoholic Fatty Liver Disease ,In vivo ,Drug Discovery ,Animals ,030304 developmental biology ,Oxadiazoles ,0303 health sciences ,Uncoupling Agents ,Depolarization ,Small molecule ,0104 chemical sciences ,Mice, Inbred C57BL ,010404 medicinal & biomolecular chemistry ,Liver ,chemistry ,Biochemistry ,Pyrazines ,Molecular Medicine ,Lead compound - Abstract
Small molecule mitochondrial uncouplers are emerging as a new class of molecules for the treatment of nonalcoholic steatohepatitis. We utilized BAM15, a potent protonophore that uncouples the mitochondria without depolarizing the plasma membrane, as a lead compound for structure-activity profiling. Using oxygen consumption rate as an assay for determining uncoupling activity, changes on the 5- and 6-position of the oxadiazolopyrazine core were introduced. Our studies suggest that unsymmetrical aniline derivatives bearing electron withdrawing groups are preferred compared to the symmetrical counterparts. In addition, alkyl substituents are not tolerated, and the N-H proton of the aniline ring is responsible for the protonophore activity. In particular, compound 10b had an EC(50) value of 190 nM in L6 myoblast cells. In an in vivo model of NASH, 10b decreased liver triglyceride levels and showed improvement in fibrosis, inflammation, and plasma ALT. Taken together, our studies indicate that mitochondrial uncouplers have potential for the treatment of NASH.
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- 2020
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44. Electrical decoupling of microbial electrochemical reactions enables spontaneous H2 evolution
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Yuxi Wang, Xiaowen Chen, Yanhong Bian, Fernanda Leite Lobo, Melvin P. Tucker, Zhiyong Jason Ren, Xi Chen, and Lu Lu
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Materials science ,Renewable Energy, Sustainability and the Environment ,business.industry ,Energy conversion efficiency ,02 engineering and technology ,Electrolyte ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,01 natural sciences ,Pollution ,Cathode ,0104 chemical sciences ,Anode ,law.invention ,Nuclear Energy and Engineering ,law ,Boost converter ,Environmental Chemistry ,Optoelectronics ,0210 nano-technology ,business ,Power management system ,Faraday efficiency - Abstract
Hydrogen evolution is not a spontaneous reaction, so current electrochemical H2 systems either require an external power supply or use complex photocathodes. We present in this study that by using electrical decoupling, H2 can be produced spontaneously from wastewater. A power management system (PMS) circuit was deployed to decouple bioanode organic oxidation from abiotic cathode proton reduction in the same electrolyte. The special PMS consisted of a boost converter and an electromagnetic transformer, which harvested energy from the anode followed by voltage magnification from 0.35 V to 2.2–2.5 V, enabling in situ H2 evolution for over 96 h without consuming any external energy. This proof-of-concept demonstrated a cathode faradaic efficiency of 91.3% and a maximum overall H2 conversion efficiency of 28.9%. This approach allows true self-sustaining wastewater to H2 evolution, and the system performance can be improved via the PMS and reactor optimization.
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- 2020
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45. Revisiting the Tenascins: Exploitable as Cancer Targets?
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Richard P, Tucker and Martin, Degen
- Abstract
For their full manifestation, tumors require support from the surrounding tumor microenvironment (TME), which includes a specific extracellular matrix (ECM), vasculature, and a variety of non-malignant host cells. Together, these components form a tumor-permissive niche that significantly differs from physiological conditions. While the TME helps to promote tumor progression, its special composition also provides potential targets for anti-cancer therapy. Targeting tumor-specific ECM molecules and stromal cells or disrupting aberrant mesenchyme-cancer communications might normalize the TME and improve cancer treatment outcome. The tenascins are a family of large, multifunctional extracellular glycoproteins consisting of four members. Although each have been described to be expressed in the ECM surrounding cancer cells, tenascin-C and tenascin-W are currently the most promising candidates for exploitability and clinical use as they are highly expressed in various tumor stroma with relatively low abundance in healthy tissues. Here, we review what is known about expression of all four tenascin family members in tumors, followed by a more thorough discussion on tenascin-C and tenascin-W focusing on their oncogenic functions and their potential as diagnostic and/or targetable molecules for anti-cancer treatment purposes.
- Published
- 2022
46. Publisher Correction: Reply to: ‘Global predictions of coral reef dissolution in the Anthropocene’
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Kay L. Davis, Andrew P. Colefax, James P. Tucker, Brendan P. Kelaher, and Isaac R. Santos
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General Earth and Planetary Sciences ,General Environmental Science - Published
- 2022
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47. Reply to: ‘Global predictions of coral reef dissolution in the Anthropocene’
- Author
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Kay L. Davis, Andrew P. Colefax, James P. Tucker, Brendan P. Kelaher, and Isaac R. Santos
- Subjects
General Earth and Planetary Sciences ,General Environmental Science - Published
- 2022
- Full Text
- View/download PDF
48. From and for folks: Relationships between forms of social support and suicidal thinking in transgender and gender diverse adults
- Author
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Sarah Pardue-Bourgeois, Julie Cerel, and Raymond P. Tucker
- Subjects
Gender Studies ,General Psychology - Published
- 2022
- Full Text
- View/download PDF
49. Perfectionism and Suicidal Ideation
- Author
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Emma H, Moscardini, Anthony, Robinson, Matthew, Calamia, and Raymond P, Tucker
- Published
- 2022
50. Perfectionism and Suicidal Ideation
- Author
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Emma H. Moscardini, Anthony Robinson, Matthew Calamia, and Raymond P. Tucker
- Subjects
Psychiatry and Mental health - Abstract
Abstract. Background: The integrated motivational–volitional (IMV) model of suicidal behavior posits that defeat leads to suicidal ideation through increased vulnerability for feelings of entrapment. One potentially important vulnerability factor for the development of feelings of defeat is socially prescribed perfectionism. Aims: The current study investigated these relationships in a sample of 313 US adults. Method: Mediation and parallel mediation analyses were conducted to determine the relationships between defeat, entrapment, social prescribed perfectionism, negative social comparison, and rejection sensitivity. Results: Findings indicated that socially prescribed perfectionism was significantly related to defeat through both negative social comparison and rejection sensitivity even when controlling for depression symptoms. Negative social comparison and rejection sensitivity were related to entrapment through feelings of defeat. This relationship was strongest when analyzing externalized (vs. internalized) entrapment. Limitations: The findings were limited by the cross-sectional study design as well as the relatively homogeneous sample. Implications and future directions are discussed.
- Published
- 2022
- Full Text
- View/download PDF
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