209 research outputs found
Subjective Cognitive Functioning Relates to Parenting in Mothers with Chronic Pain
Individuals with chronic pain commonly report problems with daily cognitive functioning. This feeling of decreased subjective cognitive functioning (SCF) can be distressing due to its impact on daily life and relationships. Children of parents with chronic pain are at an increased risk for the development of chronic pain and related impairment and it is possible that lower parental SCF could increase this risk. Specifically, mothers with lower SCF may have difficulty completing day-to-day caregiving activities as well as responding flexibly to children’s behaviors. The present study focused on examining the impact of SCF on parenting in mothers with chronic pain. We hypothesized that mothers with generalized pain would report lower SCF than mothers with localized pain and that decreased SCF in mothers with chronic pain would predict greater catastrophizing about their child’s pain, inconsistent discipline, and more guilt/worry about their pain, above and beyond pain intensity. Mothers with chronic pain participated in an optional follow-up survey task between years 1 and 2 of a larger, longitudinal study involving mothers with chronic pain and their 8-12-year-old biological child. During these tasks, mothers completed the MISCI, BPI, PCS-P, CARE, and APQ. Controlling for maternal pain severity, higher SCF was a significant predictor of decreased parent catastrophizing about child’s pain and lower guilt about the impact of pain on caregiving roles. Additionally, mothers with generalized pain reported significantly lower SCF. Greater SCF related to parenting behaviors that are generally consistent with adaptive health outcomes for offspring
Developing a School-Based Multi-Tiered Model for Self-Regulation
Self-regulation is the control mechanism that enables a student to manage attention, emotion, behavior and cognition to engage in goal-directed actions, like learning. Too often, students at- risk for poor school outcomes do not enter school with strongly developed self-regulation skills and have difficulty developing them on their own. Self-regulation skills can be taught however, and are especially effective when introduced within the school setting. This manuscript describes a school based model for fostering self-regulation. We created the model within the Multi-Tiered Systems of Support (MTSS) framework, to facilitate successful implementation
Modulation of LISA free-fall orbits due to the Earth-Moon system
We calculate the effect of the Earth-Moon (EM) system on the free-fall motion
of LISA test masses. We show that the periodic gravitational pulling of the EM
system induces a resonance with fundamental frequency 1 yr^-1 and a series of
periodic perturbations with frequencies equal to integer harmonics of the
synodic month (9.92 10^-7 Hz). We then evaluate the effects of these
perturbations (up to the 6th harmonics) on the relative motions between each
test masses couple, finding that they range between 3mm and 10pm for the 2nd
and 6th harmonic, respectively. If we take the LISA sensitivity curve, as
extrapolated down to 10^-6 Hz, we obtain that a few harmonics of the EM system
can be detected in the Doppler data collected by the LISA space mission. This
suggests that the EM system gravitational near field could provide an absolute
calibration for the LISA sensitivity at very low frequencies.Comment: 15 pages, 5 figure
Targeting of microRNA-22 Suppresses Tumor Spread in a Mouse Model of Triple-Negative Breast Cancer
The Bosnian version of the international self-report measure of posttraumatic stress disorder, the Posttraumatic Stress Diagnostic Scale, is reliable and valid in a variety of different adult samples affected by war
BACKGROUND: The aim of the present study was to assess the internal consistency and discriminant and convergent validity of the Bosnian version of a self-report measure of posttraumatic stress disorder (PTSD), the Posttraumatic Stress Diagnostic Scale (PTDS). The PTDS yields both a PTSD diagnosis according to the Diagnostic and Statistical Manual of Mental Disorders 4(th )edition (DSM-IV) and a measure of symptom severity. METHODS: 812 people living in Sarajevo or in Banja Luka in Bosnia-Herzegovina, of whom the majority had experienced a high number of traumatic war events, were administered the PTDS and other measures of trauma-related psychopathology. The psychometric properties of the instrument were assessed using Cronbach's alpha and principal components analysis, and its construct validity was assessed via Spearman correlation coefficients with the other instruments. RESULTS: The PTDS and its subscales demonstrated high internal consistency. The principal components revealed by an exploratory analysis are broadly consistent with the DSM-IV subscales except that they reproduce some previously reported difficulties with the "numbing" items from the avoidance subscale. The construct validity of the PTDS was supported by appropriate correlations with other relevant measures of trauma related psychopathology. CONCLUSION: The Bosnian version of the PTDS thus appears to be a time-economic and psychometrically sound measure for screening and assessing current PTSD. This self-report measure awaits further validation by interview methods
Optical nanofibers and spectroscopy
We review our recent progress in the production and characterization of
tapered optical fibers with a sub-wavelength diameter waist. Such fibers
exhibit a pronounced evanescent field and are therefore a useful tool for
highly sensitive evanescent wave spectroscopy of adsorbates on the fiber waist
or of the medium surrounding. We use a carefully designed flame pulling process
that allows us to realize preset fiber diameter profiles. In order to determine
the waist diameter and to verify the fiber profile, we employ scanning electron
microscope measurements and a novel accurate in situ optical method based on
harmonic generation. We use our fibers for linear and non-linear absorption and
fluorescence spectroscopy of surface-adsorbed organic molecules and investigate
their agglomeration dynamics. Furthermore, we apply our spectroscopic method to
quantum dots on the surface of the fiber waist and to caesium vapor surrounding
the fiber. Finally, towards dispersive measurements, we present our first
results on building and testing a single-fiber bi-modal interferometer.Comment: 13 pages, 18 figures. Accepted for publication in Applied Physics B.
Changes according to referee suggestions: changed title, clarification of
some points in the text, added references, replacement of Figure 13
Fundamentals of the LISA Stable Flight Formation
The joint NASA-ESA mission LISA relies crucially on the stability of the
three spacecraft constellation. Each of the spacecraft is in heliocentric
orbits forming a stable triangle. The principles of such a formation flight
have been formulated long ago and analysis performed, but seldom presented if
ever, even to LISA scientists. We nevertheless need these details in order to
carry out theoretical studies on the optical links, simulators etc. In this
article, we present in brief, a model of the LISA constellation, which we
believe will be useful for the LISA community.Comment: 9 Pages, 2 Figure Submitted to Classical and Quantum Gravit
Numerical solution of a pursuit-evasion differential game involving two spacecraft in low earth orbit
This paper considers a spacecraft pursuit-evasion problem taking place in low earth orbit. The problem is formulated as a zero-sum differential game in which there are two players, a pursuing spacecraft that attempts to minimize a payoff, and an evading spacecraft that attempts to maximize the same payoff. We introduce two associated optimal control problems and show that a saddle point for the differential game exists if and only if the two optimal control problems have the same optimal value. Then, on the basis of this result, we propose two computational methods for determining a saddle point solution: a semi-direct control parameterization method (SDCP method), which is based on a piecewise-constant control approximation scheme, and a hybrid method, which combines the new SDCP method with the multiple shooting method. Simulation results show that the proposed SDCP and hybrid methodsare superior to the semi-direct collocation nonlinear programming method (SDCNLP method), which is widely used to solve pursuit-evasion problems in the aerospace field
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