2,650 research outputs found
Father-Daughter Incest: Data from an Anonymous Computerized Survey
Retrospective data were entered anonymously by 1,521 adult women using computer-assisted self-interview. Nineteen were classified as victims of father–daughter incest, and 241 were classified as victims of sexual abuse by an adult other than their father before reaching 18 years of age. The remaining 1,261 served as controls. Incest victims were more likely than controls to endorse feeling damaged, psychologically injured, estranged from one or both parents, and shamed by others when they tried to open up about their experience. They had been eroticized early on by the incest experience, and it interfered with their adult sexuality. Incest victims experienced coitus earlier than controls and after reaching age 18 had more sex partners and were more likely to have casual sex outside their primary relationship and engage in sex for money than controls. They also had worse scores on scales measuring depression, sexual satisfaction, and communication about sex than controls
Cohesion, Instructional Time and Reading Performance at MUGC Summer Enrichment Program
As schools attempt to improve the services to struggling readers, teacher are encouraged to work collaboratively to enhance instruction. Studies are needed to examine the effects of teaming on student performance. The purpose of this study was to determine if team cohesion or instructional time at Marshall University Graduate College Summer Enrichment Program (MUGCSEP) would be correlated with measures of reading performance for students who attended the program. Statistical analyses yielded a statistically significant correlation between cohesion, instructional time and reading performance during the 2006 program. While in 2007, instructional time was not significantly correlated, cohesion results yielded a mildly inverse statistically significant correlation with reading performance. Due to differences in assessment procedures between the years, this finding supports the possibility that team cohesion may be an important factor in the assessment of children\u27s reading performance
Field-Based Experience in Light of Changing Demographics
Due to changing demographics of students admitted to the School Psychology Training Program at Marshall University Graduate College, it has become imperative to significantly expand field experiences beginning in the first semester to address the lack of educational background of most of the students entering the program. This organized sequence of field experiences continues throughout the program, parallel to classroom instruction, affording opportunities for students to put theory into practice and to interact with professionals in the field, while also allowing for exposure to the public school environment. The collaborative field experience sequence provides the students with early and continuous feedback on their personal fit with schools as organizations and culminates with the summer enrichment program
Effect of mucoprotein on the bond strength of resin composite to human dentin
The final publication is available at Springer via http://dx.doi.org/10.1007/s10266-011-0002-9.The purpose of this study was to test the bond strength and analyze the morphology of the dentin-adhesive interface of two etch and rinse and two self-etch adhesive systems with two kinds of artificial saliva (with and without 450 mg/L mucin) contamination under different conditions of decontaminating the interface. Bonded specimens were sectioned perpendicularly to the bonded surface in 1-mm thick slabs. These 1-mm thick slabs were remounted in acrylic blocks and sectioned in sticks perpendicular to the bonding interfaces with a 1-mm2 area. Nine specimens from each condition were tested after 24 h on a testing machine (Instron) at a speed of 0.5 mm/min for a total of 360 specimens. Mean and standard deviations of bond strength (MPa) were calculated. ANOVA showed significant differences as well as Fisher’s PLSD intervals (p < 0.05). The following values are the results for different groups: Control group 34–60 MPa, saliva without mucin 0–52 MPa, and saliva with mucin 0–57 MPa. Failure sites were mixed and adhesive failure was common for the low bond strength results. P&BNT with ideal conditions and following the manufacturer’s instructions (control) had the highest bond strengths and the dentin-adhesive interface exhibited an ideal morphology of etch-and-rinse system. SEM gave complementary visual evidence of the effect in the dentin/adhesive interface structure with some contaminated conditions compared with their respective control groups. This in vitro artificial saliva model with and without mucin showed that an organic component of saliva could increase or decrease the bond strength depending on the specific bonding agent and decontamination procedure
Bond strength of adhesives to dentin contaminated with smoker’s saliva
The final publication is available at Springer via http://dx.doi.org/10.1007/s10266-009-0109-4.The purpose of this study was to determine the effects of contamination with smoker’s and non-smoker’s saliva on the bond strength of resin composite to superficial dentin using different adhesive systems. The interfacial structure between the resin and dentin was evaluated for each treatment using environmental scanning electron microscopy (ESEM). Freshly extracted human molars were ground with 600-grit SiC paper to expose the superficial dentin. Adhesives [One-Up-Bond-F-Plus (OUFP) and Adper-Prompt-L-Pop (APLP)] and resin composite (TPH-Spectrum) were bonded to the dentin (n = 8/group, 180 total specimens) under five surface conditions: control (adhesive applied following manufacturers’ instructions); saliva, then 5-s air dry, then adhesive; adhesive, saliva, 5-s air dry; adhesive, saliva, 5-s water rinse, 5-s air dry (ASW group); and adhesive, saliva, 5-s water rinse, 5-s air dry, reapply adhesive (ASWA group). After storage in water at 37°C for 24 h, the specimens were debonded under tension at a speed of 0.5 mm/min. ESEM photomicrographs of the dentin/adhesive interfaces were taken. Mean bond strength ranged from 8.1 to 24.1 MPa. Fisher’s protected least significant difference (P = 0.05) intervals for critical adhesive, saliva, and surface condition differences were 1.3, 1.3, and 2.1 MPa, respectively. There were no significant differences in bond strength to dentin between contamination by smoker’s and non-smoker’s saliva, but bond strengths were significantly different between adhesive systems, with OUFP twice as strong as APLP under almost all conditions. After adhesive application and contamination with either smoker’s or nonsmoker’s saliva followed by washing and reapplication of the adhesive (ASWA group), the bond strength of both adhesive systems was the same as that of the control group
Direct imaging of a massive dust cloud around R Coronae Borealis
We present recent polarimetric images of the highly variable star R CrB using
ExPo and archival WFPC2 images from the HST. We observed R CrB during its
current dramatic minimum where it decreased more than 9 mag due to the
formation of an obscuring dust cloud. Since the dust cloud is only in the
line-of-sight, it mimics a coronograph allowing the imaging of the star's
circumstellar environment. Our polarimetric observations surprisingly show
another scattering dust cloud at approximately 1.3" or 2000 AU from the star.
We find that to obtain a decrease in the stellar light of 9 mag and with 30% of
the light being reemitted at infrared wavelengths (from R CrB's SED) the grains
in R CrB's circumstellar environment must have a very low albedo of
approximately 0.07%. We show that the properties of the dust clouds formed
around R CrB are best fitted using a combination of two distinct populations of
grains size. The first are the extremely small 5 nm grains, formed in the low
density continuous wind, and the second population of large grains (~0.14
{\mu}m) which are found in the ejected dust clouds. The observed scattering
cloud, not only contains such large grains, but is exceptionally massive
compared to the average cloud.Comment: 8 pages, 7 figures published in A&
The Common Factors of Grit, Hope, and Optimism Differentially Influence Suicide Resilience
No study to date has simultaneously examined the commonalities and unique aspects of positive psychological factors and whether these factors uniquely account for a reduction in suicide risk. Using a factor analytic approach, the current study examined the relationships between grit, hope, optimism, and their unique and overlapping relationships in predicting suicide ideation. Results of principle axis factor analysis demonstrated close relationships between these variables at both the construct and item level. Item-level analyses supported a five-factor solution (Stick-to-Itiveness, Poor Future, Consistency of Interest, Positive Future, and Poor Pathways). Four of the five factors (excluding Stick-to-Itiveness) were associated with suicide ideation. Additionally, results of a multiple regression analysis indicated that two of the five factors (Consistency of Interest and Positive Future) negatively predicted suicide ideation while Poor Future positively predicted suicide ideation. Implications regarding the interrelationships between grit, hope, and optimism with suicide ideation are discussed
Representational capacity of a set of independent neurons
The capacity with which a system of independent neuron-like units represents
a given set of stimuli is studied by calculating the mutual information between
the stimuli and the neural responses. Both discrete noiseless and continuous
noisy neurons are analyzed. In both cases, the information grows monotonically
with the number of neurons considered. Under the assumption that neurons are
independent, the mutual information rises linearly from zero, and approaches
exponentially its maximum value. We find the dependence of the initial slope on
the number of stimuli and on the sparseness of the representation.Comment: 19 pages, 6 figures, Phys. Rev. E, vol 63, 11910 - 11924 (2000
1022-107 Outcome of Different Reperfusion Strategies in Thrombolytic “Eligible” versus “Ineligible” Patients with Acute Myocardial Infarction
Pts considered “not eligible” for inclusion in most early U.S. thrombolytic trials because of advanced age, late presentation, prior CABG or shock have avery poor prognosis; thus, some have suggested broadening the criteria for lyric eligibility. To examine the role of different reperfusion strategies in pts traditionally considered lytic “eligible” vs. “ineligible” (age>70, MI onset>4 hours, or prior CABG), we examined the PAMI database in which 395 pts of any age within 12 hours onset of MI were randomized to t-PA or primary PTCA (pts with shock were excluded). Compared to lyric eligible pts, ineligible pts were o1der(67 vs. 56 yrs, p<0.0001). more frequently female (38% vs. 20%, P<0.0001), diabetic (17% vs. 10%, P=0.03), had prior CABG (8% vs. 0%, P<0.0001), presented later (4.4 vs. 2.2 hours, p<0.0001), and were more likely to present in CI-1F (20% vs. 11%, P=0.01). Endpoints included death (D), reinfarction (R), recurrent ischemic events (RIE) and stroke:Thrombolytic eligibleThrombolytic ineligiblePTCA (n=127)t-PA (n=117)PPTCA (n=68)t-PA (n=83)Pin-hosp. D2.4%1.7%NS2.9%13.3%0.025in-hosp. D or R5.5%9.4%NS4.4%15.7%0.026in-hosp. RIE11.8%29.1%0.00087.4%26.6%0.002in-hasp. stroke0%1.7%NS0%6.0%0.046 month D3.9%1.7%NS2.9%15.7%0.0096 month D or R8.7%12.8%NS7.4%22.9%0.009In conclusion: Pts traditionally considered thrombolytic eligible comprise a low risk cohort, and have a favorable prognosis whether treated with primary PTCA or t-PA. In contrast, pts historically excluded from most early lytic trials because of advanced age, late presentation or prior CABG are at increased risk, and may have improved survival with primary PTCA rather than thrompresented laterbolysis
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