1,248 research outputs found

    The Predictive Validity of the AFIT Graduate Management Program Admission Requirements: a Reassessment and Extension

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    This research is based on the Air Force and AFIT balancing mission requirements of personnel needed for duty and training airmen in advanced studies. Currently, over 50% of AFIT students do not meet AFIT entrance requirements. The purpose of this research was to examine criteria to determine its predictability of graduate success, as measured by graduate GPA, as well as determine whether performance is different for students who require criteria to be waived. Current AFIT eligibility criteria include undergraduate GPA, GRE test scores, or GMAT test scores. Other variables examined in this study include: GRE-Analytical test scores; rank/grade; prior enlistment; AFSC; gender; and number of members in household. This research found GMAT scores were a better predictor of success than GRE scores for management students. GRE-Q scores were good predictors for all students, while GRE-V scores were moderately good predictors for management students only. GRE-A scores should be added as a requirement with an appropriate standard. Undergraduate GPAs should be used as a guideline, not eligibility criteria into AFIT. Waivers should not be given for multiple deficiencies when possible, though there was little difference in the performance of students who met the criteria and those who did not. There was also little difference in the performance of students depending upon the type of waiver given

    Renal Cell Carcinoma with Direct Extension into the Gonadal Vein, Uterus, Fallopian Tube, and Bilateral Ovaries: A Case Report

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    Renal cell carcinoma (RCC) with invasion into the renal vein is well described; however, invasion into the gonadal vein is a rare event with less than five cases reported in the literature. RCC occasionally presents with metastasis to the ovaries or the fallopian tubes, although this is also a rare occurrence. We present a case of locally advanced left RCC with direct extension into the ipsilateral gonadal vein with extension into the bilateral ovaries and uterus, which has not been previously described. Computed tomography (CT) in a 72-year-old female with a 35-pound weight loss indicated the presence of a 16-cm left renal mass with caudal tumor extension through the left gonadal vein and regional lymph-adenopathy. There was no evidence of distant metastasis, and she underwent an open left radical nephrectomy. Intraoperatively, she was found to have direct extension of the tumor through the left gonadal vein into the uterus, bilateral ovaries, and the left fallopian tube. All visible dis-ease was resected, and retroperitoneal and pelvic lymphadenectomy were performed. The patient had an uneventful hospital course. Pathology revealed clear cell RCC, Fuhrman grade 3. The final pathologic stage was pT4N1M1. The patient was ultimately noted to have pulmonary metastasis and was treated with immunotherapy with no evidence of disease progression

    Predictors of Comorbid Eating Disorders and Association with Other Obsessive-Compulsive Spectrum Disorders in Trichotillomania

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    Trichotillomania (TTM) and eating disorders (ED) share many phenomenological similarities, including ritualized compulsive behaviors. Given this, and that comorbid EDs may represent additional functional burden to hair pullers, we sought to identify factors that predict diagnosis of an ED in a TTM population. Subjects included 555 adult females (age range 18–65) with DSM-IV-TR TTM or chronic hair pullers recruited from multiple sites. 7.2% (N = 40) of our TTM subjects met criteria for an ED in their lifetime. In univariable regression analysis, obsessive-compulsive disorder (OCD), Yale-Brown Obsessive Compulsive Scale (Y-BOCS) worst-ever compulsion and total scores, certain obsessive-compulsive spectrum disorders, anxiety disorder, attention-deficit/hyperactivity disorder (ADHD), and substance disorder all met the pre-specified criteria for inclusion in the multivariable analysis. In the final multivariable model, diagnosis of OCD (OR: 5.68, 95% CI: 2.2–15.0) and diagnosis of an additional body-focused repetitive behavior disorder (BFRB) (OR: 2.69, 95% CI: 1.1–6.8) were both associated with increased risk of ED in TTM. Overall, our results provide further support of the relatedness between ED and TTM. This finding highlights the importance of assessing for comorbid OCD and additional BFRBs in those with TTM. Future research is needed to identify additional predictors of comorbid disorders and to better understand the complex relationships between BFRBs, OCD and EDs

    How Our Work Influences Who We Are: Testing a Theory of Vocational and Personality Development over Fifty Years

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    This study examines the developmental influences of occupational environments on personality traits from childhood to adulthood. We test aspects of a theory of vocational and personality development, proposing that traits develop in response to work experience following corresponsive and noncorresponsive mechanisms. We describe these pathways in the context of situations of vocational gravitation and inhabitation. In a sample from the Hawaii personality and health cohort (N = 596), we examined associations of childhood and adulthood personality traits, with occupational environments profiled on the RIASEC model. Mediations tests confirmed that work influenced personality development from childhood to adulthood for Openness/Intellect. We observed multiple reactivity effects of occupation environments on adulthood traits that were not associated with corresponding selection effects

    Childhood sleep health and epigenetic age acceleration in late adolescence: Cross-sectional and longitudinal analyses

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    Aim: Investigate if childhood measures of sleep health are associated with epigenetic age acceleration in late adolescence. Methods: Parent-reported sleep trajectories from age 5 to 17, self-reported sleep problems at age 17, and six measures of epigenetic age acceleration at age 17 were studied in 1192 young Australians from the Raine Study Gen2. Results: There was no evidence for a relationship between the parent-reported sleep trajectories and epigenetic age acceleration (p ≥ 0.17). There was a positive cross-sectional relationship between self-reported sleep problem score and intrinsic epigenetic age acceleration at age 17 (b = 0.14, p = 0.04), which was attenuated after controlling for depressive symptom score at the same age (b = 0.08, p = 0.34). Follow-up analyses suggested this finding may represent greater overtiredness and intrinsic epigenetic age acceleration in adolescents with higher depressive symptoms. Conclusion: There was no evidence for a relationship between self- or parent-reported sleep health and epigenetic age acceleration in late adolescence after adjusting for depressive symptoms. Mental health should be considered as a potential confounding variable in future research on sleep and epigenetic age acceleration, particularly if subjective measures of sleep are used

    Frog nest foams exhibit pharmaceutical foam-like properties

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    Foams have frequently been used as systems for the delivery of cosmetic and therapeutic molecules; however, there is high variability in the foamability and long-term stability of synthetic foams. The development of pharmaceutical foams that exhibit desirable foaming properties, delivering appropriate amounts of the active pharmaceutical ingredient (API) and that have excellent biocompatibility is of great interest. The production of stable foams is rare in the natural world; however, certain species of frogs have adopted foam production as a means of providing a protective environment for their eggs and larvae from predators and parasites, to prevent desiccation, to control gaseous exchange, to buffer temperature extremes, and to reduce UV damage. These foams show great stability (up to 10 days in tropical environments) and are highly biocompatible due to the sensitive nature of amphibian skin. This work demonstrates for the first time that nests of the túngara frog ( Engystomops pustulosus ) are stable ex situ with useful physiochemical and biocompatible properties and are capable of encapsulating a range of compounds, including antibiotics. These protein foam mixtures share some properties with pharmaceutical foams and may find utility in a range of pharmaceutical applications such as topical drug delivery systems

    A comparative analysis of rod bipolar cell transcriptomes identifies novel genes implicated in night vision

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    Abstract In the mammalian retina, rods and a specialised rod-driven signalling pathway mediate visual responses under scotopic (dim light) conditions. As rods primarily signal to rod bipolar cells (RBCs) under scoptic conditions, disorders that affect rod or RBC function are often associated with impaired night vision. To identify novel genes expressed by RBCs and, therefore, likely to be involved in night vision, we took advantage of the adult Bhlhe23 −/− mouse retina (that lacks RBCs) to derive the RBC transcriptome. We found that genes expressed by adult RBCs are mainly involved in synaptic structure and signalling, whereas genes that influence RBC development are also involved in the cell cycle and transcription/translation. By comparing our data with other published retinal and bipolar cell transcriptomes (where we identify RBCs by the presence of Prkca and/or Pcp2 transcripts), we have derived a consensus for the adult RBC transcriptome. These findings ought to facilitate further research into physiological mechanisms underlying mammalian night vision as well as proposing candidate genes for patients with inherited causes of night blindness
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