6,483 research outputs found
Repeat-Accumulate Codes for Reconciliation in Continuous Variable Quantum Key Distribution
This paper investigates the design of low-complexity error correction codes
for the verification step in continuous variable quantum key distribution
(CVQKD) systems. We design new coding schemes based on quasi-cyclic
repeat-accumulate codes which demonstrate good performances for CVQKD
reconciliation
Alien Registration- Johnson, Sarah A. (Calais, Washington County)
https://digitalmaine.com/alien_docs/2584/thumbnail.jp
Periactin
Poster examines the chemical makeup of Periactin, generic name Cyproheptadine Hydrocholoride. Classified as an antihistamine or antipruritic, the labeled uses for Periactin are for symptomatic relief of various allergic conditions. Periactin can also be used for the following unlabeled uses: Cushing\u27s disease, carcinoid syndrome, vascular headaches, and as an appetite stimulant
Influences on Women Counseling Psychology Associate Professors’ Decisions Regarding Pursuit of Full Professorship
Twelve women tenured as associate professors in American Psychological Association–accredited counseling psychology doctoral programs were interviewed regarding their pursuit of promotion to full professor. Interview data were analyzed using a modified version of consensual qualitative research. Most participants indicated a strong desire to be promoted and stated that they would not change their minds about achieving this goal. Participants reported that their universities’ guidelines for promotion emphasized a strong publication record and evidence of a national reputation, but participants often described these criteria as vague. Pursuit of full professorship was encouraged by having a current mentor, receiving supportive feedback about applying for promotion, and publishing noteworthy research. Pursuit of full professorship was discouraged by negative prior promotion experiences, feelings that colleagues did not value the participant’s research, and conflicts between career and family obligations. Results are discussed within the context of Super’s theory of career development and social cognitive career theory
What is the most effective treatment for ADHD in children?
Stimulant medication therapy is the most effective treatment for attention deficit/ hyperactivity disorder (ADHD) in children, producing significant improvements in symptoms and modest improvements in academic achievement (strength of recommendation [SOR]: A, based on multiple randomized controlled trials [RCTs]). Nonpharmacologic therapies, such as behavior therapy, school- based interventions, and family therapy, are not as effective as stimulants but may add modest benefit to the effects of medication (SOR: B, based on 1 RCT)
The Effects of Inquiry Project-Based Learning on Student Reading Motivation and Student Perceptions of Inquiry Learning Processes
Inquiry-based learning approaches have been promoted as an instructional method for students at all levels. An inquiry approach requires students to discover or construct knowledge through relevant activities and personal investigations. Due to the student driven nature of inquiry learning, it is reasonable to believe that students will become more motivated to read and to engage in critical thinking after participating in the inquiry approach. This quantitative study observes the effects of inquiry project based learning (PBL) on reading motivation and students’ perceptions of higher order thinking processes in a middle school language arts classroom. By comparing inquiry project based learning to fully guided instruction using an experimental study design, it was hypothesized that reading motivation and perceptions of inquiry thinking processes would increase after eight weeks of implementing the inquiry PBL model. The control and treatment group’s reading motivation was compared using pre-tests and post-tests of the Motivation for Reading Questionnaire (MRQ) (Wigfield and Guthrie 1997), and student perception of the type of learning and the learning processes they have experienced in the class was measured with an instrument created by Spronken-Smith, Walker, Batchelor, O’Steen, & Angelo (2012). An Analysis of Covariance (ANCOVA) was run to determine any change in groups after the treatment, and Pearson Correlations were run to examine relationships between motivation constructs and perceptions of learning processes. There was no indication that inquiry PBL had any significant effects on the treatment group in terms of reading motivation or perceptions of critical thinking
African American and European American Therapists’ Experiences of Addressing Race in Cross-Racial Psychotherapy Dyads
Using Consensual Qualitative Research, 12 licensed psychologists’ overall experiences addressing race in psychotherapy were investigated, as were their experiences addressing race in a specific cross-racial therapy dyad. Results indicated that only African American psychologists reported routinely addressing race with clients of color or when race was part of a client’s presenting concern. European American psychologists indicated that they would address race if clients raised the topic, and some reported that they did not normally address race with racially different clients. When discussing a specific cross-racial dyad, African American therapists more often than European American therapists addressed race because they perceived client discomfort. Only European American therapists reported feeling uncomfortable addressing race, but therapists of both races perceived that such discussions had positive effects
The Shape of LITTLE THINGS Dwarf Galaxies DDO 46 and DDO 168: Understanding the stellar and gas kinematics
We present the stellar and gas kinematics of DDO 46 and DDO 168 from the
LITTLE THINGS survey and determine their respective Vmax/sigma_z,0 values. We
used the KPNO's 4-meter telescope with the Echelle spectrograph as a long-slit
spectrograph. We acquired spectra of DDO 168 along four position angles by
placing the slit over the morphological major and minor axes and two
intermediate position angles. However, due to poor weather conditions during
our observing run for DDO 46, we were able to extract only one useful data
point from the morphological major axis. We determined a central stellar
velocity dispersion perpendicular to the disk, sigma_z,0, of 13.5+/-8 km/s for
DDO 46 and of 10.7+/-2.9 km/s for DDO 168. We then derived the
maximum rotation speed in both galaxies using the LITTLE THINGS HI data. We
separated bulk motions from non-circular motions using a double Gaussian
decomposition technique and applied a tilted-ring model to the bulk velocity
field. We corrected the observed HI rotation speeds for asymmetric drift and
found a maximum velocity, Vmax, of 77.4 +/- 3.7 and 67.4 +/- 4.0 km/s for DDO
46 and DDO 168, respectively. Thus, we derived a kinematic measure,
Vmax/sigma_z,0, of 5.7 +/- 0.6 for DDO 46 and 6.3 +/- 0.3 for DDO 168.
Comparing these values to ones determined for spiral galaxies, we find that DDO
46 and DDO 168 have Vmax/sigma_z,0 values indicative of thin disks, which is in
contrast to minor-to-major axis ratio studies
Supervisor Cultural Responsiveness and Unresponsiveness in Cross-Cultural Supervision
Thirteen supervisees’ of color and 13 European American supervisees’ experiences of culturally responsive and unresponsive cross-cultural supervision were studied using consensual qualitative research. In culturally responsive supervision, all supervisees felt supported for exploring cultural issues, which positively affected the supervisee, the supervision relationship, and client outcomes. In culturally unresponsive supervision, cultural issues were ignored, actively discounted, or dismissed by supervisors, which negatively affected the supervisee, the relationship, and/or client outcomes. European American supervisees’ and supervisees’ of color experiences diverged significantly, with supervisees of color experiencing unresponsiveness more frequently and with more negative effects than European American supervisees. Implications for research and supervision practice are discussed
A Search for Near-Infrared Emission From the Halo of NGC 5907 at Radii of 10 kpc to 30 kpc
We present a search for near-infrared (3.5-5 micron) emission from baryonic
dark matter in the form of low-mass stars and/or brown dwarfs in the halo of
the nearby edge-on spiral galaxy NGC 5907. The observations were made using a
256 by 256 InSb array with a pixel scale of 17" at the focus of a
liquid-helium-cooled telescope carried above the Earth's atmosphere by a
sounding rocket. In contrast to previous experiments which have detected a halo
around NGC 5907 in the V, R, I, J and K bands at galactic radii 6kpc < r <
10kpc, our search finds no evidence for emission from a halo at 10kpc < r <
30kpc. Assuming a halo mass density scaling as r^(-2), which is consistent with
the flat rotation curves that are observed out to radii of 32kpc, the lower
limit of the mass-to-light ratio at 3.5-5 microns for the halo of NGC 5907 is
250 (2 sigma) in solar units. This is comparable to the lower limit we have
found previously for NGC 4565 (Uemizu et al. 1998). Based on recent models, our
non-detection implies that hydrogen- burning stars contribute < 15% of the mass
of the dark halo of NGC 5907. Our results are consistent with the previous
detection of extended emission at r < 10kpc if the latter is caused by a
stellar population that has been ejected from the disk because of tidal
interactions. We conclude that the dark halo of NGC 5907, which is evident from
rotation curves that extend far beyond 10kpc, is not comprised of hydrogen
burning stars.Comment: 12 pages, LateX, plus 6 ps figures. Accepted by ApJ. minor changes,
added references, corrected typo
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