Miracle-dz/UniFAR-FTUs huggingface dataset:
Spectrum leasing and cooperative resource allocation in cognitive OFDMA networks

This paper considers a cooperative orthogonal frequency division multiple access (OFDMA)-based cognitive radio network where the primary system leases some of its subchannels to the secondary system for a fraction of time in exchange for the secondary users (SUs) assisting the transmission of primary users (PUs) as relays. Our aim is to determine the cooperation strategies among the primary and secondary systems so as to maximize the sum-rate of SUs while maintaining quality-of-service (QoS) requirements of PUs. We formulate a joint optimization problem of PU transmission mode selection, SU (or relay) selection, subcarrier assignment, power control, and time allocation. By applying dual method, this mixed integer programming problem is decomposed into parallel per-subcarrier subproblems, with each determining the cooperation strategy between one PU and one SU We show that, on each leased subcarrier, the optimal strategy is to let a SU exclusively act as a relay or transmit for itself. This result is fundamentally different from the conventional spectrum leasing in single-channel systems where a SU must transmit a fraction of time for itself if it helps the PU's transmission. We then propose a subgradient-based algorithm to find the asymptotically optimal solution to the primal problem in polynomial time. Simulation results demonstrate that the proposed algorithm can significantly enhance the network performance.
A pilot randomized controlled trial to evaluate the benefit of the cardiac rehabilitation paradigm for the non-acute ischaemic stroke population

Objective: To evaluate risk factor reduction and health-related quality of life following a 10-week cardiac rehabilitation programme in non-acute ischaemic stroke subjects. Design: Single-blinded randomized control trial. Setting: Outpatient rehabilitation. Subjects: Forty-eight community-dwelling ischaemic stroke patients (38 independently mobile, 9 requiring assistance, 1 non-ambulatory) were randomly assigned to intervention or control groups by concealed allocation. Intervention: The trial consisted of a 10-week schedule with measures taken at weeks 1 and 10. Both groups continued usual care (excluding aerobic exercise); intervention subjects attended 16 cycle ergometry sessions of aerobic-training intensity and two stress-management classes. Main outcome measures: Cardiac risk score (CRS); VO2 (mL O2/kg per minute) and Borg Rate of Perceived Exertion (RPE) assessed during a standardized ergometry test; Hospital Anxiety and Depression Scale (HADS); Frenchay Activity Index; Fasting Lipid Profiles and Resting Blood Pressure. Results: Group comparison with independent t-tests showed significantly greater improvement at follow-up by intervention subjects than controls in VO2 (intervention 10.6 ±1.6 to 12.0 ± 2.2, control 11.1 ±1.8 to 11.1 ±1.9 t=4.734, P<0.001) and CRS (intervention 13.4 ±10.1 to 12.4 ±10.5, control 9.4 ±6.7 to 15.0 ±6.1 t=-2.537, P<0.05). RPE rating decreased in intervention subjects (13.4 ±12.2 to 12.4 ±2.0) and increased in controls (13.8 ±1.8 to 14.4 ±1.6); Mann—Whitney U (U = 173.5, P<0.05). Within-group comparison showed significant decrease in the HADS depression subscale in the intervention group alone (5.1 ±3.4 to 3.0 ±2.8) (Wilcoxon signed ranks test Z=-3.278, P<0.001). Conclusion: Preliminary findings suggest non-acute ischaemic stroke patients can improve their cardiovascular fitness and reduce their CRS with a cardiac rehabilitation programme. The intervention was associated with improvement in self-reported depression.
Development of a Floating Dosage Form of Ranitidine Hydrochloride by Statistical Optimization Technique

The objective of this study was to evaluate the effect of formulation variables on the release properties, floating lag time, and hardness, when developing floating tablets of Ranitidine hydrochloride, by the statistical optimization technique. The formulations were prepared based on 32 factorial design, with polymer ratio (HPMC 100 KM: Xanthan gum) and the amount of aerosil, as two independent formulation variables. The four dependent (response) variables considered were: percentage of drug release at the first hour, T50% (time taken to release 50% of the drug), floating lag time, and hardness of the tablet. The release profile data was subjected to a curve fitting analysis, to describe the release mechanism of the drug from the floating tablet. An increase in drug release was observed with an increase in the polymer ratio, and as the amount of aerosil increased, the hardness of the tablet also increased, without causing any change in the floating lag time. The desirability function was used to optimize the response variables, each having a different target, and the observed responses were in accordance with the experimental values. The results demonstrate the feasibility of the model in the development of floating tablets containing Ranitidine hydrochloride.
A Comparison of and Commentary on Cross-Cultural Communication Apprehension Research: A Preliminary Assessment.

A study examined the extent to which existing data on communication apprehension (CA) can be employed to accurately reflect the cultural differences observed. The impact of those findings on the understanding of the nature of CA as it occurs in multiple cultures was also examined. Ten research reports that contained quantitative information that would allow for comparison between data sets were examined. Results were consistent with the growing body of cross-cultural CA research that supports the claim that some cultures have CA norms similar to the United States while others have CA norms which differ substantially--Lithuanians, Finns, Swedes, and the English are more apprehensive than Americans, while Australians, Chinese, Micronesians, Puerto Ricans, Filipinos, Costa Ricans, and Koreans are less apprehensive than Americans. Future research needs to identify and quantify the specific consequences and make a greater effort to address the validity of the measures employed to assess CA and its related constructs in other cultures. (Contains 3 tables of data and 29 references.) (RS) *********************************************************************** * Reproductions supplied by EDRS are the best that can be made * * from the original document. * *********************************************************************** A Comparison of and Commentarv on Cross-Cultural Communication Apprehension Research: A Preliminary Assessment John Bourhis Department of Communications Southwest Missouri State University Hank Tkachuk Speech Communication and Theatre Arts Department Concordia College Mike Allen Department of Communication University of Wisconsin at Milwaukee Paper presented at the annual meeting of the Speech Communication Association, November, 1993, Miami, Florida. U S OEPANTMENT OF EDUCATION Nce of Educahonat Re%eVc WV) Overeeel EDUCATIONAL RE SOURCES INEORMATI')N CENTER (ERIC) 1,. Tms document nes been ,fruoducerl as rece.ved from the ()try-el or mgandahon ehgmahng . 1 C Wog, changes have been made tn ,nbrove reproduction (Wahl). Poinls v Daly & McCroskey, 1984). More recently, scholars have begun to examine CA and its related constructs as potential crosscultural and intercultural phenomena. This interest is based, in part, upon research from a number of disciplines (e.g., anthropology and sociology) [which] clearly demonstrates that the norms for verbal behavior, as well as the consequent perceptions associated with these norms, vary to an extraordinary degree from one culture to thr: next" (Elliot, Jensen, Scott, & McDonough, 1982, p. 592). Researchers have examined CA in a variety of different cultures for the purpose of developing normative data for making reliable cultural comparisons. CA has been examined in such diverse cultures as Australia (McDowell, Mc Ewan, & Ross-Smith, 1991), Costa Rica (Pucci, Van Buren, & Porter, 1991), Finland (Sallinen-Kuparinen, McCroskey, & Richmond, 1991), Guam (Klopf, 1980), Japan (McCroskey, Gudykunst, & Nishida, 1985; Klopf & Cambra, 1979), Lithuania (Andersen & Butler, 1991), Micronesia
A Flexible Approach to Staged Events

The Staged Event Driven Architecture (SEDA) can be seen as a milestone as regards integration of threads and events in a single model. By decomposing applications into sets of multi-threaded stages connected by event queues, SEDA allows for the use of each concurrency model where most appropriate. Inside each SEDA stage, the number and scheduling policy of threads can be adjusted to enhance performance. SEDA lends itself to parallelization on multicores and is well-suited for many high-volume data stream processing systems and highly concurrent event processing systems. In this paper, we discuss the design of Leda, a platform that extends the staged model proposed by SEDA, decoupling application design from specific execution environments. In Leda, stages are defined purely by their role in application logic, with no concern for locality of execution, and are bound together through asynchronous communication channels, called connectors, to form a directed graph representing the flow of events inside the application. Decisions about the configuration of the application at execution time are delayed to later phases of the implementation process. Stages in the application graph can then be grouped to form clusters, and each cluster is mapped to an exclusive OS process, running on an arbitrary host. The paper briefly reviews a classification of hybrid concurrent models in order to establish SEDA's and Leda's role in this space. It then describes the design of Leda, which emphasizes decoupling at several levels, and discusses how its implementation in Lua helped to reinforce these design goals.
Mindfulness for Interfaith Dialogue: A Proposal for ASEAN Youth

This paper is proposing an application of mindfulness for interfaith dialogue among ASEAN youth. Documentary research was the method used in this study, and the data were collected from related literatures and descriptively analyzed according to the following scopes: the principles of mindfulness practice, the principles of interfaith dialogue, and the proposal for the mindful interfaith dialogue among ASEAN youth. The result showed that awareness and compassion were the core of those principles, mindfulness practice and interfaith dialogue. Meanwhile, the proposal suggested that one should aware of oneself and others at the present without judgments. Awareness would automatically make us realize things as they are and command us what should do to ourselves and others correctly. This might be one of techniques enhancing an open-minded interfaith dialogue which lead to the goal of every faith, peace.
Perceived stress, life events & coping among higher secondary students of Hyderabad, India: A pilot study

Background & objectives: Psychosocial stressors leading to allostatic load need to be explored further as these have great scope for early intervention. Stress studies done in India are mostly based on sources of stress and objective measures of stress. Therefore, the objective of the present study was to assess stress appraisal among students (16-17 yr) and to identify institution-specific differences (Private vs. Government) in stress appraisal and coping. Methods: The study was carried out among 16-17 yr old apparently normal students. Eighty students were recruited from six schools ensuring equal representation from gender/category of schools (Government/ Private). Validated and culturally adaptable behavioural scales for perceived stress (PSS), stressful life events (LES) and coping were administered. Psychological morbidity was assessed using GHQ-12. Data on 75 students were available for statistical analysis. Results: The students of both Government and Private schools showed similar stress perception, though the former tend to have a higher mean score. The scores were significantly higher on avoidance coping (P<0.05). The stepwise regression model showed coping as the independent predictor of perceived stress (R2= 10%). Interpretation & conclusions: Students from Government schools had significantly higher scores on avoidance coping and therefore, suitable for a systematic study on chronic stress for early intervention.
Probabilities of Boolean Functions given by Random Implicational Formulas

We study the asymptotic relation between the probability and the complexity of Boolean functions in the implicational fragment which are generated by large random Boolean expressions involving variables and implication, as the number of variables tends to infinity. In contrast to models studied in the literature so far, we consider two expressions to be equal if they differ only in the order of the premises. A precise asymptotic formula is derived for functions of low complexity. Furthermore, we show that this model does not exhibit the Shannon effect. An erratum was added to this paper on Feb 20, 2014.
A Metalearning Approach to Processing the Scope of Negation

Finding negation signals and their scope in text is an important subtask in information extraction. In this paper we present a machine learning system that finds the scope of negation in biomedical texts. The system combines several classifiers and works in two phases. To investigate the robustness of the approach, the system is tested on the three subcorpora of the BioScope corpus representing different text types. It achieves the best results to date for this task, with an error reduction of 32.07% compared to current state of the art results.
Proactive temperature balancing for low cost thermal management in MPSoCs

Designing thermal management strategies that reduce the impact of hot spots and on-die temperature variations at low performance cost is a very significant challenge for multiprocessor system-on-chips (MPSoCs). In this work, we present a proactive MPSoC thermal management approach, which predicts the future temperature and adjusts the job allocation on the MPSoC to minimize the impact of thermal hot spots and temperature variations without degrading performance. In addition, we implement and compare several reactive and proactive management strategies, and demonstrate that our proactive temperature-aware MPSoC job allocation technique is able to dramatically reduce the adverse effects of temperature at very low performance cost. We show experimental results using a simulator as well as an implementation on an UltraSPARC T1 system.
Interlinking educational data: an experiment with GLOBE resources

With the proliferation of educational materials on the Web of Data, interlinking learning resources has become an important issue nowadays. Interlinking datasets over Linked Open Data (LOD) enables enriching, enhances navigation, facilitates casual discovery, and improves resource seeking. To this aim, many tools, approaches and frameworks have been built to discover similarities between entities on the Web of Data. In this paper we evaluate interlinking approach on a huge educational resource (GLOBE) by applying two link discovery tools (LIMES and GoogleRefine). We also report the results of linking the GLOBE to the DBpedia and Factbook datasets and list the advantage of this interlinking process.
Public Watermarking for Reversible Image Authentication

Nowadays, digital watermarking algorithms are widely applied to ownership protection and tampering detection of digital images. In this paper, a new reversible image ownership and tampering authentication scheme based on public key system is proposed. In the scheme, the original image is split into many non-overlapping blocks. Feature information of image is extracted according the attribute of the block, for some blocks, feature information is embedded into the differences of some pixels, and for the other blocks, the data is embedded in the lease significant bit of some pixels, the interesting point and usefulness of the algorithm lies in that watermarked image can be exactly restored into the same as the original image, and the secret key totally depend on the original image, this guaranteed the security of the algorithm. The experimental results show that the quality of the embedded image is very high, and the positions of the tampered parts are located correctly.
Source (or Part of the following Source): Type Article Title New Neurons in Aging Brains: Molecular Control by Small Non-coding Rnas. Author(s) New Neurons in Aging Brains: Molecular Control by Small Non-coding Rnas

Copyright It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content licence (like Creative Commons). UvA-DARE is a service provided by the library of the University of Amsterdam (http://dare.uva.nl) Adult neurogenesis generates functional neurons from neural stem cells present in specific brain regions. It is largely confined to two main regions: the subventricular zone of the lateral ventricle, and the subgranular zone of the dentate gyrus (DG), in the hippocam-pus. With age, the function of the hippocampus and particularly the DG is impaired. For instance, adult neurogenesis is decreased with aging, in both proliferating and differentiation of newborn cells, while in parallel an age-associated decline in cognitive performance is often seen. Surprisingly, the synaptogenic potential of adult-born neurons is only marginally influenced by aging. Therefore, although proliferation, differentiation, and synaptogenesis of adult-born new neurons in the DG are closely related to each other, they are differentially affected by aging. In this review we discuss the crucial roles of a novel class of recently discovered modulators of gene expression, the small non-coding RNAs, in the regulation of adult neurogenesis. Multiple small non-coding RNAs are differentially expressed in the hippocampus. In particular a subgroup of the small non-coding RNAs, the microRNAs, fine-tune the progression of adult neurogenesis. This makes small non-coding RNAs appealing candidates to orchestrate the functional alterations in adult neurogenesis and cognition associated with aging. Finally, we summarize observations that link changes in circulating levels of steroid hormones with alterations in adult neurogenesis, cognitive decline, and vulnerability to psychopathology in advanced age, and discuss a potential interplay between steroid hormone receptors and microRNAs in cognitive decline in aging individuals.
Equator : Faster Decision Making for Geoscientists

Earthquakes form a permanent threat to humankind, causing death and injuries each year. For this reason, studying earthquakes has become an important area of research in geoscience. Responding to an earthquake event, for mitigation or for research purposes, demands quick decision processes which require timely and precise situational information. In this paper, we present Equator, a web-based content management system that automatically collects, integrates, and visualizes earthquake related information from various agencies. Equator was developed to meet specific requirements of the German Task Force Earthquake. It is in productive use by the Task Force since 2008 and proved to significantly reduce time required for acquiring situational awareness.
Analytical Modeling of Pipeline Parallelism

Parallel programming is a requirement in the multi-core era. One of the most promising techniques to make parallel programming available for the general users is the use of parallel programming patterns. Functional pipeline parallelism is a pattern that is well suited for many emerging applications, such as streaming and "Recognition, Mining and Synthesis" (RMS) workloads. In this paper we develop an analytical model for pipeline parallelism based on queueing theory. The model is useful to both characterize the performance and efficiency of existing implementations and to guide the design of new pipeline algorithms. We demonstrate the usefulness of the model by characterizing and optimizing two of the PARSEC benchmarks, ferret and dedup. We identified two issues with these codes: load imbalance and I/O bottlenecks. We addressed load imbalance using two techniques: i) parallel pipeline stage collapsing; and ii) dynamic scheduling. We implemented these optimizations using Pthreads and the Threading Building Blocks (TBB) libraries. We compare the performance of different alternatives and we note that the TBB implementation based on work stealing outperforms all other variants.
Mycoplasma genitalium: An emerging sexually transmitted pathogen

Mycoplasma genitalium is a member of genital mycoplasmas, which is emerging as an important causative agent of sexually transmitted infections both in males and females. The advent of polymerase chain reaction and other molecular methods have made studies on M. genitalium more feasible, which is otherwise a difficult organism to isolate. Besides Chlamydia trachomatis, M. genitalium is now an important and established cause of non gonococcal urethritis (NGU) in men, more so in persistent and recurrent NGU. Multiple studies have also shown a positive association of M. genitalium with mucopurulent cervicitis and vaginal discharge in females as well. The evidences for M. genitalium pelvic inflammatory diseases and infertility are quite convincing and indicate that this organism has potential to cause ascending infection. Lack of clear association with M. genitalium has been reported for bacterial vaginosis and adverse pregnancy outcomes. Diagnosis of M. genitalium infections is performed exclusively using nucleic acid amplification tests (NAATs), owing to poor or slow growth of bacterium in culture. Although there are no guidelines available regarding treatment, macrolide group of antimicrobials appear to be more effective than tetracyclines. The present review provides an overview of the epidemiology, pathogenesis, clinical presentation and management of sexually transmitted infections due to M. genitalium.
Overlapping Social Network Communities and Viral Marketing

Social networks have highly been used to understand the behavior and activities of individuals in nature and society. They are being used as a means to communicate, diffuse information, and to control the spread of diseases and computer viruses, in addition to many other tasks. Business organizations look upon social networks as an opportunity to spread the word-of-mouth for viral marketing and this task has gained significance with the popularity of Online Social Networks (OSNs). However, an important characteristic of social networks, including OSNs, which is the existence of overlapping communities of users, has not been exploited yet for the task of viral marketing even though it seems promising. This paper aims to present the importance of identifying overlapping communities for the task of viral marketing in social networks and also provides some experimental results on an email network to back the claims.
Relaciones entre formación disciplinar, concepciones sobre el aprendizaje y uso de estrategias metacognitivas en estudiantes universitarios de profesorado

Detrás de las acciones y estrategias de las personas para aprender o enseñar, existe un cuerpo teórico noexplícito, que se configura a partir de un conjunto de supuestos coherentes o incoherentes entre sí, en fun-ción de la relación que exista entre lo que el sujeto dice y lo que hace. Estas representaciones implícitas surgen no sólo de la educación formal recibida, sino de la propia historia educativa de cada sujeto y, en el caso de los docentes, orientan de un modo u otro su práctica, tal como lo indican numerosas investi-gaciones sobre el tema. En este trabajo se analizan las concepciones sobre el aprendizaje y la utilización de estrategias metacognitivas de dos grupos de estudiantes universitarios de profesorado, provenientes de distintas áreas disciplinares: ciencias humanas y ciencias exactas. Los resultados muestran dependencia de las concepciones de aprendizaje con respecto al dominio de formación disciplinar, situación que se da sólo parcialmente en el caso de la utilización de estrategias metacognitivas.