Miracle-dz/UniFAR-FTUs huggingface dataset:
Distributed Compressive CSIT Estimation and Feedback for FDD Multi-User Massive MIMO Systems

To fully utilize the spatial multiplexing gains or array gains of massive MIMO, the channel state information must be obtained at the transmitter side (CSIT). However, conventional CSIT estimation approaches are not suitable for FDD massive MIMO systems because of the overwhelming training and feedback overhead. In this paper, we consider multi-user massive MIMO systems and deploy the compressive sensing (CS) technique to reduce the training as well as the feedback overhead in the CSIT estimation. The multi-user massive MIMO systems exhibits a hidden joint sparsity structure in the user channel matrices due to the shared local scatterers in the physical propagation environment. As such, instead of naively applying the conventional CS to the CSIT estimation, we propose a distributed compressive CSIT estimation scheme so that the compressed measurements are observed at the users locally, while the CSIT recovery is performed at the base station jointly. A joint orthogonal matching pursuit recovery algorithm is proposed to perform the CSIT recovery, with the capability of exploiting the hidden joint sparsity in the user channel matrices. We analyze the obtained CSIT quality in terms of the normalized mean absolute error, and through the closed-form expressions, we obtain simple insights into how the joint channel sparsity can be exploited to improve the CSIT recovery performance.
Relapse and Survival After Barbiturate Anesthetic Treatment of Refractory Status Epilepticus

Summary: Purpose: Pentobarbital is standard treatment for refractory status epilepticus (SE) and is almost uniformly effective, but the morbidity of treatment and the mortality of refractory SE are high. Recurrence of SE after pentobarbital discontinuation may predict a worsened outcome. We sought to determine the optimal use of barbiturate anesthetic treatment of refractory SE.
State Gun Law Environment and Youth Gun Carrying in the United States.

IMPORTANCE Gun violence and injuries pose a substantial threat to children and youth in the United States. Existing evidence points to the need for interventions and policies for keeping guns out of the hands of children and youth. OBJECTIVES (1) To examine the association between state gun law environment and youth gun carrying in the United States, and (2) to determine whether adult gun ownership mediates this association. DESIGN, SETTING, AND PARTICIPANTS This was a repeated cross-sectional observational study design with 3 years of data on youth gun carrying from US states. The Youth Risk Behavior Survey comprises data of representative samples of students in grades 9 to 12 from biennial years of 2007, 2009, and 2011. We hypothesized that states with more restrictive gun laws have lower rates of youth gun carrying, and this association is mediated by adult gun ownership. EXPOSURES State gun law environment as measured by state gun law score. MAIN OUTCOMES AND MEASURES Youth gun carrying was defined as having carried a gun on at least 1 day during the 30 days before the survey. RESULTS In the fully adjusted model, a 10-point increase in the state gun law score, which represented a more restrictive gun law environment, was associated with a 9% decrease in the odds of youth gun carrying (adjusted odds ratio [AOR], 0.91 [95% CI, 0.86-0.96]). Adult gun ownership mediated the association between state gun law score and youth gun carrying (AOR, 0.94 [ 95% CI, 0.86-1.01], with 29% attenuation of the regression coefficient from -0.09 to -0.07 based on bootstrap resampling). CONCLUSIONS AND RELEVANCE More restrictive overall gun control policies are associated with a reduced likelihood of youth gun carrying. These findings are relevant to gun policy debates about the critical importance of strengthening overall gun law environment to prevent youth gun carrying.
Dual Stem Loops within the Poliovirus Internal Ribosomal Entry Site Control Neurovirulence

ABSTRACT In the human central nervous system, susceptibility to poliovirus (PV) infection is largely confined to a specific subpopulation of neuronal cells. PV tropism is likely to be determined by cell-external components such as the PV receptor CD155, as well as cell-internal constraints such as the availability of a suitable microenvironment for virus propagation. We reported previously that the exchange of the cognate internal ribosomal entry site (IRES) within the 5′ nontranslated region of PV with its counterpart from human rhinovirus type 2 (HRV2) can eliminate the neuropathogenic phenotype in a transgenic mouse model for poliomyelitis without diminishing the growth properties in HeLa cells. We now show that attenuation of neurovirulence of PV/HRV2 chimeras is not confined to CD155 transgenic mice but is evident also after intraspinal inoculation intoCynomolgus monkeys. We have dissected the PV and HRV2 IRES elements to determine those structures responsible for neurovirulence (or attenuation) of these chimeric viruses. We report that two adjacent stem loop structures within the IRES cooperatively determine neuropathogenicity.
Experimentation and Control: A Conceptual Framework for the Comparative Analysis of Socialization Agencies

The paper introduces a conceptual framework, backed by empirical evidence, in which experimentation and control are perceived as independent but coexisting generic dimensions within each of the three major socialization agencies during adolescence: the home, the school, and the informal youth association. The socialization experiences in each agency, in terms of each dimension, was assessed via a closed questionnaire distributed among 1433 Israeli Jewish adolescents. The results shown, first, a clear-cut differentiation between the two dimensions across agencies and, second, that the agencies differ substantially in the degree to which each of the dimensions is present and therefore diverge in the patterns of socialization on which they are based. In light of these results, a preliminary typology of socialization contexts, incorporating the dimensions of experimentation and control, is proposed under the assumption that each context has a distinct impact on the development of adolescents.
The Rationalization of Educational Development: Scientific Activity among International Nongovernmental Organizations

Educational development organizations and related global movements emerged and expanded during the twentieth century. Today, most activities in the educational development field are characterized by a scientific outlook that schooling can be transformed using measurable and generalizable knowledge, and most of its leaders believe that experts can transport this knowledge internationally across diverse contexts. University-level certificates are now available for individuals who wish to become credentialed international development experts, and a cadre of professionals has been trained to apply the procedures of academic research to educational development. Scientific approaches to educational development have thus acquired great legitimacy in the modern world. The organizations and professionals pursuing scientific, expert, and knowledge-based activities have become a powerful international force and are increasingly the key players shaping global policies and practices in educational development, as evident from the global benchmarks laid out in the Education for All movement, as well as in international testing programs. In this article, I analyze the characteristics of international nongovernmental organizations (INGOs) that pursue scientific, expert, and knowledgebased activities. Although scientific activities are immensely influential in the contemporary world, we have a poor understanding of which organizations engage in scientific activities and what types of organizations avoid or even reject them. Are such INGOs usually based in Western countries or headquartered worldwide? Are scientific activities compatible with alternative charitable and service provision approaches to educational development? Little is known about the types of organizations that are shaping educational development worldwide through their engagement in scientific, rationalized activities. Educational development INGOs can be defined as those seeking to improve education in developing countries. They are neither government nor for-profit agencies, and they have ties to more than one country. One prominent example, the Bangladesh Rural Advancement Committee (BRAC), operates primarily in Bangladesh and secondarily in Afghanistan, both coun
The Influence of Alternating Magnetic Field Frequency on Magneto-Thermal Behavior of Mn0.25Fe2.75O4@PANI Material

Mn0.25Fe2. 75O4@PANI material has been successfully synthesized using in-situ polymerization method. Meanwhile, Mn0.25Fe2. 75O4 nanoparticles based on local sand was synthesized using the coprecipitation method. The Mn0.25Fe2. 75O4@PANI sample was characterized using the instrument of X-Ray Diffraction (XRD), Fourier Transform Infrared (FTIR), Transmission Electron Microscopy (TEM), and Magneto-Thermal Test to know the structure of the material, functional group of the material, size morphology of the material, and the specific absorption rate (SAR) value. The XRD pattern of Mn0.25Fe2. 75O4@PANI material was dominated by an amorphous structural pattern. The domination of PANI polymer in the Mn0.25Fe2. 75O4@PANI material implicated to the decrease in the intensity of Mn0.25Fe2. 75O4 nanoparticle peak. The existence of PANI polymer also impacted on the amount of aggregation of the Mn0.25Fe2. 75O4 nanoparticles so that the size of the Mn0.25Fe2. 75O4 particles increased from 8.4 nm (without PANI) to 30.4 nm (with PANI). Moreover, the test result using magneto-thermal instrument showed that the bigger the frequency of the alternating magnetic field, the obtained SAR value of the Mn0.25Fe2. 75O4@PANI material would be bigger as well. For the frequency of 483 and 553 Hz, the SAR values of Mn0.25Fe2. 75O4@PANI material was 0.81 and 3.65 W/g, respectively. Based on the SAR results, the Mn0.25Fe2. 75O4@PANI material has the potential to be the media of drug delivery for cancer therapy.
Posttraumatic Stress Symptoms and Nonmedical Prescription Drug Use Among College Students With Trauma Exposure

abstract Objective: Nonmedical prescription drug use, defined as using the drug without a prescription or in ways for which it is not prescribed, and traumatic event exposure are highly prevalent among college students. Despite evidence that posttraumatic stress symptoms could place college students at risk for nonmedical prescription drug problems, no studies have examined this relationship. This study was a preliminary examination of posttraumatic stress symptoms, lifetime nonmedical prescription drug use, hazardous use, and dependence symptoms among college students with trauma exposure. Methods: Participants were students attending a rural college in Virginia, recruited through psychology classes, flyers, LISTSERVs, and announcements at student events. All students who reported experiencing at least one traumatic event were included (N = 119); participants' mean age was 19.7 years (SD = 1.90), about half were women (n = 63, 53%), and most were Caucasian (n = 103, 87%). Results: Nearly 60% of participants (n = 71) reported using nonmedical prescription drugs at least once during their lifetime and were more likely than those with no use to report hazardous alcohol use (p < .01) and depressive symptoms (p < .05). There were no other significant differences between those who did and did not report use of nonmedical prescription drugs. Regression analyses showed that posttraumatic stress symptom frequency was positively associated with hazardous nonmedical prescription drug use, after controlling for gender, depressive symptoms, and hazardous alcohol use (p < .001). Posttraumatic stress symptom frequency was higher for those with any nonmedical prescription drug dependence symptoms (p < .001), but was unrelated to whether the student had ever engaged in nonmedical prescription drug use. Conclusions: Findings suggest that consideration of the types of behaviors and problems a college student is experiencing related to nonmedical prescription drug use may be more relevant to posttraumatic stress symptom frequency than dichotomous measures of nonmedical prescription drug use alone. Further, the association between the frequency of posttraumatic stress symptoms and both hazardous nonmedical prescription drug use and dependence symptoms among college students with a trauma history deserves further investigation due to the resulting vulnerability to increasingly negative outcomes.
Perception of Teachers of Agriculture about Supervised Agricultural Experience Programmes (SAEP) in Secondary Schools in Ekiti and Ondo States Nigeria.

The study investigated the perception of teachers of agriculture about Supervised Agricultural Experience Programmes (SAEP) in secondary schools in Ekiti and Ondo States. The population used for the study consisted of 520 teachers of agricultural science in all the secondary schools in Ekiti and Ondo States. The sample used for this study was 136 teachers of agricultural science drawn through a proportionate stratified sampling technique to pick four(4) teachers from each of the 34 Local Government of the two states. The Instrument used was a structured questionnaire to investigate the extend to which the teachers agreed on disagree with statemenst regarding SAEP. The questionnaire were test and re-tested yielding a reliability co-efficient of 89. (Cronbach alpha). The data for the study were analyzed using mean, standard deviation t-test and two tailed probability statistics. The probability level was set at P<0.05. Thirty eight items were generated for the study. The study found out among others that the teaching of agriculture needs improvement; that though SEAP related contents are in the agricultural science curriculum the teaching and learning of agriculture are not vocationally oriented in Ekiti and Ondo States. It was recommended among others that agricultural programmes in all schools should include supervised agricultural experience programmes, while the State School Boards in collaboration with relevant Ministries should conduct informational workshop and orientation on SAEP for educational planners, administrator and teachers of agriculture in Nigeria.
Involving International Online Volunteers: Factors for Success, Organizational Benefits, and New Views of Community

In conjunction with the Institute for Volunteering Research’s November 2005 conference, “Volunteering Research: Frontiers and Horizons,” this research was undertaken to assess current common practices among organizations successfully involving international online volunteers; to explore the role online volunteering may play in building a more cohesive global community; and to assess the relationship between involving online volunteers and building organizational capacities. This paper offers a brief history and overview of online volunteering practice and details survey results regarding organizations that involved the Outstanding Online Volunteers of 2002, 2003, 2004, and 2005 at www.onlinevolunteer. org.
Prosodic disambiguation of scopally ambiguous quantificational sentences in a discourse context

Researchers have long sought to determine the strength of the relation between prosody and the interpretation of scopally ambiguous sentences in English involving quantification and negation (e.g. All the men didn't go ). While Jackendoff ( 1972 ) proposed a one-to-one mapping between sentence-final contour and the scope of negation (falling contour: narrow scope, fall-rise contour: wide scope), in subsequent work, researchers (e.g. Ladd 1980 ; Ward & Hirschberg 1985 ; Kadmon & Roberts 1986 ) disentangled the link between prosody and scope. Even though these pragmatic accounts predict variability in production, they still allow for some correlation between scope and prosody. To date, we lack systematic evidence to bear on this discussion. Here, we present findings from two perception experiments aimed at investigating whether prosodic information – including, but not limited to, sentence-final contour – can successfully disambiguate such sentences. We show that when speakers provide consistent auditory cues to sentential interpretation, hearers can successfully recruit these cues to arrive at the correct interpretation as intended by the speaker. In light of these results, we argue that psycholinguistic studies (including language acquisition studies) investigating participants’ ability to access multiple interpretations of scopally ambiguous sentences – quantificational and otherwise – should carefully control for prosody.
Nonverbal Compensatory Reactions to Changes in Interpersonal Proximity

Summary The present study investigated Argyle and Dean's hypothesis that for any pair of interactants, a change in one of the nonverbal components of intimacy on the part of one person elicits in the other a compensatory shift in one or more of the components. Following an initial interview session, 40 female Ss were confronted with a female interviewer (I) who either increased, decreased, or maintained the same face-to-face seating distance as she did in the first session. As predicted, when the I moved closer, Ss looked at her less and smiled less. Conversely, when the I moved farther away, Ss looked at her more, smiled more, leaned forward, and oriented themselves more directly. Such compensatory reactions may be interpreted as an attempt to re-establish the previous intimacy equilibrium.
Evidence-based preventive practice guidelines. Qualitative study of useful resources on the Internet.

OBJECTIVE To explore family physicians' perspectives on how best to provide evidence-based preventive clinical practice guidelines (CPGs) to physicians on the Internet. DESIGN Focus groups. SETTING A large, urban centre and a rural community hospital. PARTICIPANTS Thirty-four of more than 150 family physicians who subscribed to an e-mail discussion group. METHOD Qualitative survey of four focus groups, analysis of transcripts and researchers' notes. MAIN FINDINGS Four themes characterized participants' preferences for disseminating preventive CPGs on the Internet: content expectations; quick, easy access to information; trustworthiness of information; and implications for clinical practice. CONCLUSION Physicians want quick, easy access to trustworthy information. A website for preventive CPGs with these characteristics would be a useful resource.
The Use : of Fura-for Estimating Fluxes

-The compound fura(Grynkiewicz et al., J. Biol. Chem. 260, 344&3450, 1985) is generally known as an indicator dye for measuring the concentration of free calcium ([Ca”]) inside living cells. It should be appreciated, however, that this is not what it actually is. More accurately, it is a divalent metal ion chelator which changes its fluorescence properties upon complexation. Thus, [Ca ‘1 has to be inferred indirectly by means of the law of mass action. As a chelator, furamay influence the quantity of interest, the Ca signal. On the other hand, the chelator action may be used for a number of other purposes, some of them more directly related to its molecular properties: as a chelator, competing with endogenous Ca buffers, it can be used to estimate endogenous buffers and their properties. When present at sufficiently high concentration, such that it outcompetes endogenous buffers, furareports total Ca changes and is a probe for Ca fluxes across the membrane. Here, theory and methodological considerations of such applications of furawill be summarized and results on Ca buffer and Ca flux measurements derived from various methods will be compared.
Lung cancer, proximity to industry, and poverty in northeast England.

This study assesses whether deprived populations living close to industry experience greater mortality from lung cancer than populations with comparable socioeconomic characteristics living farther away. Mortality data, census data, a postal survey of living circumstances, historic and contemporary data on air quality and a historic land-use survey were used. Analysis was based on two conurbations in England, Teesside and Sunderland. Housing estates in Teesside were selected based on socioeconomic criteria and distinguished by proximity to steel and chemical industries; they were grouped into three zones: near (A), intermediate (B), and farther (C), with a single zone in Sunderland. We included 14,962 deaths in 27 estates. Standardized mortality ratios (SMR) for lung cancer [International Classification of Diseases #9 (ICD-9) 162] and cancers other than lung (ICD-9 140-239, excluding 162), and sex ratios were calculated. Mortality from lung cancer was well above national levels in all zones. For men, a weak gradient corresponding with proximity to industry at younger ages reversed at older ages. In women 0-64 years of age, stronger gradients in lung cancer mortality corresponded with proximity to industry across zones A, B, and C (SMR = 393, 251, 242, respectively). Overall rates in Teesside were higher than Sunderland rates for women aged 0-64 years (SMR = 287 vs. 185) and 65-74 years (SMR = 190 vs. 157). The association between raised lung cancer mortality and proximity to industry in women under 75 years of age could not be explained by smoking, occupation, socioeconomic factors, or artifact. Explanations for differences between men and women may include gender-specific occupational experiences and smoking patterns. Our judgment is that the observed gradient in women points to a role for industrial air pollution. ImagesFigure 1Figure 2
Measuring masculinity in the context of chronic disease

Masculine beliefs are influential in men’s responses to illness; however, current measures of masculinity may not be salient for highly prevalent chronic diseases such as prostate cancer. To address this gap, a contextualized measure of masculinity for men with prostate cancer was developed. A novel measure of masculinity, the Masculinity in Chronic Disease Inventory (MCD-I), was developed based on existing qualitative data and tested for acceptability and face validity with 19 men previously treated for prostate cancer. A cross-sectional survey of 403 Australian men with prostate cancer (Mage = 70.34 years; SD = 7.25) then assessed convergent, divergent, and discriminant validity for the MCD-I using existing reliable and valid measures of masculinity, masculine self-esteem, quality of life, erectile dysfunction, and sexual help seeking. A 6-factor structure for the MCD-I (22 items) was confirmed with good to excellent internal reliabilities (alpha = 0.69–0.92) for the subscale domains of Strength, Sexual Importance/Priority; Family Responsibilities; Emotional Self-Reliance; Optimistic Capacity; and Action Approach. Acceptable convergent and divergent validity was supported, and the MCD-I was also able to discriminate between men with severe versus moderate to mild erectile dysfunction (p = .002) and the Sexual Importance/Priority domain discriminated between men who had sought sexual advice and those who had not (p = .005). A contextual approach to measuring masculinity in men with prostate cancer may help avoid reductionist approaches for focusing on erectile dysfunction in these populations. This also presents a way forward for gender-sensitive psychosocial services and programs for men experiencing prostate cancer. (PsycINFO Database Record (c) 2015 APA, all rights reserved)