1,556 research outputs found
The hierarchy of higher order solutions of the derivative nonlinear Schr\"odinger equation
In this paper, we provide a simple method to generate higher order position
solutions and rogue wave solutions for the derivative nonlinear Schr\"odinger
equation. The formulae of these higher order solutions are given in terms of
determinants. The dynamics and structures of solutions generated by this method
are studied
Coherent photo-produced J and dielectron yields in isobaric collisions
Recently, significant enhancements of J/ and pair
production at very low transverse momenta were observed by the STAR and ALICE
collaboration in peripheral hadronic A+A collisions. The anomaly excesses point
to evidence of coherent photon-nucleus and photon-photon interactions in
violent hadronic heavy-ion collisions, which were conventionally studied only
in ultra-peripheral collisions. The isobaric collisions performed at RHIC
provides a unique opportunity to test the existence of coherent photon products
in hadronic heavy-ion collisions. The idea is that the possible production of
coherent photon products is significantly different in different collision
systems due to the variations in their charge and nuclear density
distributions. In this letter, we focus on the peripheral collisions and
provide theoretical predictions for coherent production of J/ and
dielectron in isobaric collisions. We show that the expected yields differ
significantly to perform the experimental test
The higher order Rogue Wave solutions of the Gerdjikov-Ivanov equation
We construct higher order rogue wave solutions for the Gerdjikov-Ivanov
equation explicitly in term of determinant expression. Dynamics of both soliton
and non-soliton solutions is discussed. A family of solutions with distinct
structures are presented, which are new to the Gerdjikov-Ivanov equation
Comparative studies on the therapeutic and adverse effects of mirtazapine and fluoxetine in the treatment of adult depression
Purpose: To evaluate comparatively the therapeutic and adverse effects of mirtazapine and fluoxetine for the management of adult depression.Methods: Adults (58) with depression admitted to the Neurology Department of Zaozhuang Municipal Hospital from August 2014 to July 2016 were randomly assigned to either mirtazapine group or fluoxetine group. Those in mirtazapine group were given mirtazapine while the fluoxetine group took fluoxetine. The patients were graded for Hamilton Depression Scale (HAMD) and Treatment Emergent Symptoms Scale (TESS) scores before treatment and at weeks 2, 4, 6, and 8 post-treatment, with the aim of comparing therapeutic effects and adverse reactions to mirtazapine and fluoxetine.Results: The therapeutic effects seen in the two groups did not differ significantly (p > 0.05), but mirtazapine had a slight advantage over fluoxetine. Effectiveness appeared after 2 weeks in the mirtazapine group, and 4 weeks in the other group. Moreover, there were significant differences in HAMD scores between the two groups after 2 and 4 weeks of treatment (p < 0.05), but the differences in scores after 6 and 8 weeks of treatment were not significant (p > 0.05). However, there were significant differences in score between pretreatment and 8-week post-treatment scores (p < 0.05). Mirtazapine group also had lower incidents of adverse reactions (sleepiness, dyspepsia, nausea, vomiting, excitation, and headache) than the fluoxetine group (p < 0.05).Conclusion: Mirtazapine has similar effect as fluoxetine in the treatment of adult depression, but works faster, with low incidence of adverse reactions. Thus, it is a safer and quicker antidepressant for clinical application.Keywords: Mirtazapine, Fluoxetine, Adult depression, Clinical effect, Adverse reaction
Establishing a Vibrant Information Literacy Program in the Absence of Curriculum Mandate: A Case Study
This article describes how the Skillman Library at Lafayette College uses internal grants to successfully integrate information literacy into upper-level courses. There is a general consensus among faculty grant recipients that integrating information literacy in their courses not only improves students’ skills as consumers of information but also helps students understand how scholars have answered questions in their particular field, and how the students themselves can contribute to the creation of knowledge. Due to their positive grant course experience, faculty members continue to build information literacy in their courses and are advocates for information literacy. The grant program created a culture of information literacy at Lafayette College and led to further pedagogical and curricular changes. It has also allowed librarians to venture into new territories such as studio art and expanded our involvement from guest lecturers to co-designing and co-teaching courses
Can pragmatic inference benefit from topic prominence? ERP evidence from Mandarin Chinese
This study investigated how pragmatic inference making is modulated by information
structure in preceding text. We created three types of two-clause structures in which
the interpretation of a critical word in the second clause was dependent on the
engagement of pragmatic inference as well as a successful establishment of a
referential relation between the target word and an intended antecedent in the
preceding text. An enhanced P600 response was elicited by target words when the
intended referent was in non-topic position compared to topic position or sub-topic
position. Moreover, a reduced N400 was elicited by the target word when the
intended referent in the preceding clause was in non-topic position, compared to topic
position. These findings suggest that the process of building an inferential relation can
benefit from information structural prominence of topicality
Visual Presentation Modes in Online Product Reviews and Their Effects on Consumer Responses
Online product reviews posted by consumers are becoming a staple part of e-commerce websites. Researchers demonstrate that the volume and strength of online reviews, among others, have a significant impact on consumer responses. These studies have focused on the effect of text-based online reviews, but current information technologies enable the posting of online reviews with higher visual content, such as with images and videos. Using the Elaboration Likelihood Model and Dual Coding theory, we examine the effects of three visual modes for presenting online reviews with three products – backpack, digital camera and video game. Our results indicate that video-based online reviews are perceived as being more credible, helpful, persuasive, and providing a great sense of involvement, compared to text-based and image-based online reviews, but with no significant differences among the latter two. The influence of presentation modes on consumer responses is partially moderated by product type
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