Miracle-dz/UniFAR-FTUs huggingface dataset:
Performance of a cluster-based MAC protocol in multiuser MIMO wireless LANs

The IEEE 802.11n specifies MIMO techniques to enhance data rate in WLANs. However, using carrier sense multiple access with collision avoidance (CSMA/CA), it can support only point-to-point links. On the other hand, it is known that multiuser MIMO techniques significantly increase the spectral efficiency of a network. There are already some enhanced MIMO signal processing techniques available which enable concurrent multiuser transmissions by utilising multiuser interference cancellation techniques. Multiuser interference can also be cancelled in a distributed manner. To enhance IEEE 802.11n systems such that multiple users can transmit simultaneously, we propose a novel cluster-based CSMA/CA (CB-CSMA/CA) protocol. According to this protocol, nodes in a network are grouped in clusters such that the nodes which belong to the same cluster can transmit or receive simultaneously. In this paper, we explain the basics of the protocol and investigate throughput performance of the CB-CSMA/CA. We apply the CB-CSMA/CA to a multiuser zero-forcing relaying network, where several amplify-and-forward relays assist the communication between multiple source and destination pairs and perform distributed channel orthogonalisation. This cooperative network can be considered as a future application for next generation WLANs. As it is shown, the CB-CSMA/CA provides a significant throughput gain over point-to-point systems.
Biochemical modulation of 5-fluorouracil: a randomized comparison of sequential methotrexate, 5-fluorouracil and leucovorin versus sequential 5-fluorouracil and leucovorin in patients with advanced symptomatic colorectal cancer. The Nordic Gastrointestinal Tumor Adjuvant Therapy Group.

BACKGROUND The optimal chemotherapy for advanced colorectal carcinoma is not known. Two regimens, both based upon biochemical modulation of 5-FU, were compared in a randomized multicenter trial. PATIENTS AND METHODS A total of 202 symptomatic patients were randomly allocated to receive either sequential methotrexate, 250 mg/m2, during the first 2 hours and 5-FU, 500 mg/m2, at hours 3 and 23 followed by leucovorin rescue initiated at hour 24 (15 mg x 8) (MFL) or sequential 5-FU 500 mg/m2 followed by leucovorin 60 mg/m2 30-40 minutes later, on days 1 and 2 (FLv). Treatments were repeated every 14 days for eight courses and then every 3 to 4 weeks. Four patients were unevaluable. RESULTS The two treatments were equally effective with respect to objective response rates (complete (CR)+partial (PR), MFL 17%, FLv 21%), subjective response rates (symptom relief in the absence of severe adverse effects, 45% vs. 37%), and survival (median 7.5 vs. 9 months). All responses lasted at least 4 months. Overall, toxicity was low and comparable between the groups, but serious toxicity was more common in the MFL group. CONCLUSIONS Since FLv is easier to administer and carries less risk for serious toxicity, it should be recommended as a first-line treatment before MFL. On either regimen, about 40% of symptomatic patients can expect palliation, i.e., symptomatic relief without severe adverse effects, for at least 4 months.
Gene expression pattern NSPc1, a novel mammalian Polycomb gene, is expressed in neural crest-derived structures of the peripheral nervous system

AbstractAnterior-posterior (A-P) patterning is a key element in early embryonic development. Polycomb group (PcG) genes act as transcriptionalrepressors to regulate A-P patterning by either directly or indirectly controlling the coordinated expression of the HOM/Hox homeobox(Curr. Opin. Genet. Dev. 7 (1997) 488; Trends Genet. 13 (1997) 167). We describe the isolation and characterization of a novel mammalianPcG gene, termed Nervous System Polycomb-1 (NSPc1). Human and mouse NSPc1 genes encode proteins with an N-terminal RING ﬁngerdomain and share homology with Drosophila melanogaster lethal(3)73Ah and the mammalian Mel18 and Bmi1 genes. Transcripts areobserved at 10 dpc in the otic vesicle, urogenital bud and dorsal root ganglia. At 11.5 dpc, transcripts are present in a subset of neural crestcell derivatives of the peripheral nervous system, and in the neural tube. NSPc1 expression is ubiquitous in adult tissue. q 2001 ElsevierScience Ireland Ltd. All rights reserved. Keywords: NSPc1; Neural crest-derived structures; Peripheral nervous system
MCSS Based Numerical Simulation for Reliability Evaluation of Repairable System in NPP

The quantitative analyses of Nuclear Power Plant (NPP)'s repairable systems are conventionally Markov-based methods. The thing is, systems' state space grows exponentially with the increase of basic events, which makes the problem hard or even impossible to solve. In addition, the maintenance /test activities are frequently imposed on some safety-critical components, which make the Markov based approach unavailable. In this paper, a new numerical simulation approach based on MCSS (Minimal Cut Sequence Set) is proposed, which can get over the shortcomings of the conventional Markov method. Two typical cases are analyzed and results indicate that the new approach is correct as well as feasible.
A sensitivity analysis of enzymatic estimation of infarct size.

SHELL AND COWORKERS present a compartmental mathematical model representing a biological system (acute myocardial infarction) in which CPK appears in the blood and is eventually degraded. From this model they developed a method for estimation of the size of a volume of infarcted myocardium. '-3 This method would seem ideally suited for estimating the acute effect of an intervention on infarct size, and several investigators have proposed doing so.4-8 Up to this time, the literature on enzymatic estimation of infarct size has emphasized the situations in which it should be useful. However, there is little discussion of the potential limitation of this method. Therefore, we thought it would be useful to review the original work of Shell and to determine if any limitations existed, with particular emphasis on the sensitivity of infarct size estimation to the observed variations in model parameters.
Social Group Work Models

The social group work method, like all social work methods, has developed largely experientially. Yet it has done so within a framework of some kind of guiding consensus about its essential elements. Persistently, social group workers have sought to formulate a logical relationship between these elements and pragmatic solutions to the tasks that have confronted them in practice. The evolutionary efforts of group workers to describe repeated patterns of phenomena and to define practice, in the language of science, has resulted in the emergence of several different theoretical models of social group work method. We have arrived at that stage of theory construction that can now be identified as
Trajectory Optimization With Particle Swarm Optimization for Manipulator Motion Planning

Optimization-based methods have been recently proposed to solve motion planning problems with complex constraints. Previous methods have used optimization methods that may converge to a local minimum. In this study, particle swarm optimization (PSO) is proposed for trajectory optimization. PSO is a population-based stochastic global optimization method inspired by group behaviors in wildlife, and has the advantages of simplicity and fast convergence. Trajectory modifications are encoded in particles that are optimized with PSO. The normalized step cost (NSC) concept is used for the initialization of the particles in PSO. A method for reusing previously optimized parameters is also developed. The optimized parameters are stored together with corresponding NSC vectors, and when a constraint violation occurs, the parameters associated with an NSC vector that is similar to the query NSC vector are selected. The selected vector is used for initializing the particles. The reuse of the previously optimized parameters improves the convergence of the PSO in motion planning. The effectiveness of these methods is shown with simulations and an experiment using a three-dimensional problem with constraints. The proposed algorithm successfully optimized a trajectory while satisfying the constraints and is less likely to converge to a local minimum.
Creating bilingual lexica using reference wordlists for alignment of monolingual semantic vector spaces

This paper proposes a novel method for automatically acquiring multi-lingual lexica from non-parallel data and reports some initial experiments to prove the viability of the approach. Using established techniques for building mono-lingual vector spaces two independent semantic vector spaces are built from textual data. These vector spaces are related to each other using a small {\em reference word list} of manually chosen reference points taken from available bi-lingual dictionaries. Other words can then be related to these reference points first in the one language and then in the other. In the present experiments, we apply the proposed method to comparable but non-parallel English-German data. The resulting bi-lingual lexicon is evaluated using an online English-German lexicon as gold standard. The results clearly demonstrate the viability of the proposed methodology.
easing the transition to high school

introduCtion The ninth grade is a pivotal year where suddenly students find themselves struggling to navigate large, impersonal, and competitive environments. This major transition year creates a " holding tank " otherwise known as the " ninth grade bulge " where some twenty five percent of students that fail the ninth grade are held for another year (Black). Several strategies to improve student performance and decrease retention rates have emerged over the last four decades. One strategy to decrease non-promotion and dropout rates is implementing Ninth Grade Academies. Freshman academies provide incoming ninth grade students with additional resources and personalized support to overcome transitional obstacles. A number of models (including Talent Development, Career Academy and High Schools That Work) have been created with the goal of improving academic success. The purpose of this study is to catalog data on all existing Ninth Grade Academies in North Carolina and then analyze the comprehensive catalog to determine their impact on student retention, non-promotion, and student proficiency.
Top Scientific Visualization Research Problems

Scientific visualization as currently understood and practiced is still a relatively new discipline. As a result, we visualization researches are not necessarily accustomed to undertaking the sorts of self-examinations that other scientists routinely undergo in relation to their work. Yet if we are to creat a disciplinary culture focused on matters of real scientific importance and committed to real progress, it is essential that we ask ourselves hard questions on an ongoing basis. What are the most important research issues facing us? What underlying assumptions needs to be challenged and perhaps abandoned? What practices need to be reviewed? In this article, I attempt to start a discussion of these issues by proposing a list of top research problems and issues in scientific visualization.
Performance comparison of three assay methods used in fasting and postmethionine load plasma homocysteine determinations from patients with vascular disease.

Several methods have been developed for measurement of plasma total homocysteine (tHcy), a proven graded risk factor for cardiovascular diseases. The aim of the study was to compare 3 commonly used clinical methods (enzyme immunoassay, Axis Biochemicals, Oslo, Norway; and fluorescence polarization immunoassay [FPIA], Axis, on the Abbott IMx System, Abbott Laboratories, Abbott Park, IL; and BioRad high-performance liquid chromatography [HPLC], Laboratories, Munich, Germany) for tHcy determination in samples from cardiovascular patients also undergoing methionine load measurement. Only HPLC reached the required coefficient of variation (<6%) for desirable performance for tHcy concentrations ranging between 0.68 and 5.41 mg/L (5 and 40 micromol/L). A higher variability was observed for postmethionine load vs fasting samples, which reached statistical significance for FPIA (P = .0013). The closest agreement between methods was observed between HPLC and FPIA for fasting tHcy concentrations (-0.23 mg/L [-1.69 micromol/L], -30% to 8%). Both immunoassays could be suitable alternatives for laboratories with high workloads when HPLC is not available. Differences among tHcy values must be taken into account when these methods will be used interchangeably for diagnosis and monitoring of treatment.
Adaptive output feedback control for uncertain system with static nonlinearity

The problem of control law design for a system consisting of linear stationary and static nonlinear parts is considered. It is supposed that parameters of the linear block are unknown, and its input-to-output transfer function is minimum phase. It is assumed that nonlinear part of the system is known inaccurately, irreducible to the linear block input and, generally, does not satisfy sector restrictions. The regulator ensuring output asymptotic stability is designed. The output of the control system, not its derivatives, is used as a measured variable.
Handbook of Autism and Pervasive Developmental Disorders

Partial table of contents: DIAGNOSIS AND CLASSIFICATION Rett's Syndrome: A Pervasive Developmental Disorder (R. Van Acker) DEVELOPMENT AND BEHAVIOR Social Development in Autism (F. Volkmar et al.) Autism in Infancy and Early Childhood (W. Stone) NEUROBIOLOGY Neurological Aspects of Autism (N. Minshew, et al.) ASSESSMENT Behavioral Assessment of Individuals with Autism (M. Powers) INTERVENTIONS Behavioral Interventions (J. Bregman & J. Gerdtz) Working with Families (L. Marcus, et al.) Routine Health Care (R. Lacamera & A. Lacamera) PUBLIC POLICY PERSPECTIVES Coping with the Diagnosis of Autism (B. Siegel) Ethical Issues in Research and Treatment (A. Klin & D. Cohen) THEORETICAL PERSPECTIVES Classification and Causal Issues in Autism (I. Rapin) Perspectives on Social Impairment (L. Waterhouse & D. Fein) INTERNATIONAL PERSPECTIVES Canada (P. Szatmari) Spain (J. Fuentes) PERSONAL PERSPECTIVES A Sibling's Perspective on Autism (J. Konidaris) Indexes.
Improved force control laws for advanced tracking applications

An approach is presented to improve the performance of existing control laws when the end effector is in contact with a moving object or when it moves along the surface of the object. The approach consists of feeding forward the object motion parameters such as velocity and acceleration, in the force control law. If the motion of the object is not known in advance, its motion parameters are estimated using an observer. The approach is applied to external force control. Simulation results demonstrate the improved performance and are confirmed experimentally. >
Specific Cooperation Between Imp-α2 and Imp-β/Ketel in Spindle Assembly During Drosophila Early Nuclear Divisions

The multifunctional factors Imp-α and Imp-β are involved in nuclear protein import, mitotic spindle dynamics, and nuclear membrane formation. Furthermore, each of the three members of the Imp-α family exerts distinct tasks during development. In Drosophila melanogaster, the imp-α2 gene is critical during oogenesis for ring canal assembly; specific mutations, which allow oogenesis to proceed normally, were found to block early embryonic mitosis. Here, we show that imp-α2 and imp-β genetically interact during early embryonic development, and we characterize the pattern of defects affecting mitosis in embryos laid by heterozygous imp-α2D14 and imp-βKetRE34 females. Embryonic development is arrested in these embryos but is unaffected in combinations between imp-βKetRE34 and null mutations in imp-α1 or imp-α3. Furthermore, the imp-α2D14/imp-βKetRE34 interaction could only be rescued by an imp-α2 transgene, albeit not imp-α1 or imp-α3, showing the exclusive imp-α2 function with imp-β. Use of transgenes carrying modifications in the major Imp-α2 domains showed the critical requirement of the nuclear localization signal binding (NLSB) site in this process. In the mutant embryos, we found metaphase-arrested mitoses made of enlarged spindles, suggesting an unrestrained activity of factors promoting spindle assembly. In accordance with this, we found that Imp-βKetRE34 and Imp-βKetD bind a high level of RanGTP/GDP, and a deletion decreasing RanGTP level suppresses the imp-βKetRE34 phenotype. These data suggest that a fine balance among Imp-α2, Imp-β, RanGTP, and the NLS cargos is critical for mitotic progression during early embryonic development.
ADAPT at IJCNLP-2017 Task 4: A Multinomial Naive Bayes Classification Approach for Customer Feedback Analysis task

In this age of the digital economy, promoting organisations attempt their best to engage the customers in the feedback provisioning process. With the assistance of customer insights, an organisation can develop a better product and provide a better service to its customer. In this paper, we analyse the real world samples of customer feedback from Microsoft Office customers in four languages, i.e., English, French, Spanish and Japanese and conclude a five-plus-one-classes categorisation (comment, request, bug, complaint, meaningless and undetermined) for meaning classification. The task is to %access multilingual corpora annotated by the proposed meaning categorization scheme and develop a system to determine what class(es) the customer feedback sentences should be annotated as in four languages. We propose following approaches to accomplish this task: (i) a multinomial naive bayes (MNB) approach for multi-label classification, (ii) MNB with one-vs-rest classifier approach, and (iii) the combination of the multilabel classification-based and the sentiment classification-based approach. Our best system produces F-scores of 0.67, 0.83, 0.72 and 0.7 for English, Spanish, French and Japanese, respectively. The results are competitive to the best ones for all languages and secure 3rd and 5th position for Japanese and French, respectively, among all submitted systems.
Can phenology explain the scarcity of folivory in New World primates?

I evaluated the hypothesis that the scarcity of folivorous neotropical primate taxa is due to fruiting and leafing occurring in phase in the New World. I compiled phenological information from different primatological studies, and correlated patterns of fruiting and leafing. Contrary to the prediction of the hypothesis, at most sites there was no synchronization of fruiting and leafing. Thus, the scarcity of folivorous platyrrhine taxa can not be attributed to specific phenological patterns of the neotropics. Some potential alternative hypotheses are suggested. Am. J. Primatol. 55:171–175, 2001. © 2001 Wiley‐Liss, Inc.
Beyond early development: Xenopus as an emerging model for the study of regenerative mechanisms

While Xenopus is a well‐known model system for early vertebrate development, in recent years, it has also emerged as a leading model for regeneration research. As an anuran amphibian, Xenopus laevis can regenerate the larval tail and limb by means of the formation of a proliferating blastema, the lens of the eye by transdifferentiation of nearby tissues, and also exhibits a partial regeneration of the postmetamorphic froglet forelimb. With the availability of inducible transgenic techniques for Xenopus, recent experiments are beginning to address the functional role of genes in the process of regeneration. The use of soluble inhibitors has also been very successful in this model. Using the more traditional advantages of Xenopus, others are providing important lineage data on the origin of the cells that make up the tissues of the regenerate. Finally, transcriptome analyses of regenerating tissues seek to identify the genes and cellular processes that enable successful regeneration. Developmental Dynamics 238:1226–1248, 2009. © 2009 Wiley‐Liss, Inc.
Bullismo e rischio depressivo: una indagine esplorativa in un campione di studenti nella prima adolescenza

Background Cross-sectional and longitudinal international studies have explored the relationship between bullying and depression, showing a close link between victimization and depression. In 2008 CENSIS data emphasized that in Italy 49.9% of parents indicate the occurrence of bullying in the classes attended by their children. Objectives The aim of the present study was to evidence bullying in a sample of students in their early adolescence, to analyse bullying and victimization with respect to depressive risk and to evidence the relationship among bullying, victimization and depressive risk. Materials and methods 157 students in their early adolescence (mean age = 12.5) filled in the Bullying Questionnaire by Olweus and the Children’s Depression Inventory by Kovacs. The questionnaires were handed out to the randomly selected class groups during a time agreed with the school teachers. Results The explored sample showed the presence of bullying (31.8% of bullying others, and 15.9% of being bullied); there were not significant differences with respect to the gender. 14.6% of the students in the investigated sample was at depressive risk for scores over the cut-off, 18% and 32% respectively of the bullies and the victims of bullying students were at depressive risk for scores over the cut-off. Therefore, the correlation between victimization and depression was positive and significant and the correlation between bullying and depression was also positive and significant, but moderate. Conclusions The results of the present study pointed out that bullies and victims are at increased risk for affective disorders. Moreover, the study highlighted the need for early assessment of bullying and victimization and for targeted interventions by health professionals and school personnel. Such interventions are likely to reduce human suffering and long-term health costs and provide a safer environment for children to grow up in.
Energy efficient delay-aware routing in multi-tier architecture for wireless sensor networks

Wireless sensor network (WSN) is composed of a large number of sensor nodes densely deployed in inhospitable physical environments. Due to limitations of sensor nodes in terms of memory, energy and computational capacities, the most important issue for designing sensor network protocols is energy efficiency. Although energy efficiency is a major concern in WSNs, it often suffers from the addition network delay. In this work, we first propose an energy and delay efficient hierarchical clustering scheme called BHC (Bruijn Hierarchical Clustering) for WSNs. It allows data transmission from sensor nodes to the base station (BS) in the form of multi-hop, multi-path and ensure energy efficiency and reasonable delay. Next, we provide data distribution algorithms from the sensor nodes to BS as quickly as possible and the most energy efficient. To evaluate the appropriateness of our proposal, we analyze the simulation results against another protocol in terms of communication overhead, total amount of energy dissipated in system and network delay using ns-2 network simulator.