Miracle-dz/UniFAR-FTUs huggingface dataset:
Phase Transition Analysis for Covariance Based Massive Random Access with Massive MIMO

This paper studies the massive random access problem in which a large number of sporadically active devices wish to communicate to a base-station (BS) equipped with a large number of antennas. The devices are pre-assigned unique pilot sequences for random access. It has been shown previously that the device activity detection problem at the BS can be formulated as a maximum likelihood estimation (MLE) problem, whose solution depends on the sample covariance matrix of the received signal. This paper adopts the MLE formulation, and proposes an approach to analyze the covariance based detection by studying the asymptotic properties of the MLE via its associated Fisher information matrix. This paper proposes a necessary condition on the Fisher information matrix such that the estimation error tends to zero in the massive multiple-input multiple-output (MIMO) regime. A phase transition analysis is carried out based on the necessary condition. This paper also analyzes the distribution of the estimation error for the case with a large but finite number of antennas at the BS. Numerical experiments validate the analysis.
Solar-type cycles of the secondary stars in cataclysmic variables

We found cyclical variations in the quiescent magnitudes and outburst intervals of 21 dwarf novae, 1 nova and 1 nova-like star produced by the solar-type cycles of the late-type secondary components. More than 70% of individual systems in this work are rst studied by Fourier periodogram analysis. It seems that the mean cycle amplitudes of the quiescent magnitudes are considerably larger for SU UMa stars. Cyclical modulations of quiescent magnitudes found for the stars, which have orbital periods below the period gap, support the hypothesis that even almost fully convective secondaries may possess activity cycles. The estimated probability density functions show peaks at 9.7, 7.9 and 8.6 yrs for cataclysmic variables (CVs), single main-sequence stars (MS) and all stars (CVs+MS), respectively. Using a larger set of data, we conrm that there is no correlation of the cycle period with the rotational regime of the secondary star. It is also conrmed that cycle periods of CVs are in the range of those of single main-sequence stars. We note that the observational cycle parameters (i.e. cycle period, Pcyc, and cycle amplitude of quiescent magnitudes, m) do not seem in relation with any other parameter such as masses of primary and secondary stars, mean outburst interval, mean outburst duration, mean decline and rise rate of outbursts, absolute magnitudes in quiescent and outburst states etc.
Title Impacts of dietary forage and crude protein levels on the shedding of Escherichia coli O 157 : H 7 and Listeria in dairy cattle feces Permalink

The shedding of Escherichia coli O157:H7 and Listeria monocytogenes in the feces of ruminants and the consequential risk to the public and environmental health is well reported. However, the influence of dietary manipulation on the shedding of fecal bacteria is not well understood. This study was conducted to improve understanding of the relationship between dietary feed composition and shedding of E. coli O157:H7 and Listeria spp. in dairy feces. Twelve cows were randomly assigned to four treatment diets of two dietary forage levels: low forage (37.4% dry matter, DM) vs. high forage (53.3% of DM) and two dietary crude protein (CP) levels: low protein (15.2% of DM) vs. high protein (18.5% of DM) in a 4×4 replicated Latin square design with four periods each including a 14 d adaptation and 3 d sample collection periods. Generic E. coli was detected in some of the feed ingredients, such as cotton seed, alfalfa hay, almond, and CaCO3, while Listeria was detected in the alfalfa hay and mineral mix. A significant interaction effect was observed between dietary forage and CP on the presence of fecal E. coli O157:H7 (P=0.01) but not with Listeria. On average, the greatest E. coli O157:H7 level (6.6 log10 CFU/g of feces) was observed from the high forage and high protein diet and the lowest level was 6.1 log10 CFU/g from the low forage and high protein diet. The average Listeria shedding rate was within the range of 1.7–2.3 log10 CFU/g among the dietary forage and CP treatments. For the CP treatments, significantly low levels of Listeria were observed from cows fed the high protein (0.9−1.6 log10 CFU/g) compared to the low protein (1.3–2.1 log10 CFU/g) diet. Considering temporal fluctuations, no significant diurnal pattern was observed for either E.coli O157:H7 or Listeria. In addition, no time of sampling over day by dietary forage or CP content interaction on fecal E.coli O157:H7 or Listeria level was observed. This study showed that diets can influence the shedding of potentially pathogenic bacteria in dairy cow excreta.
An Analysis of College-Student Travel-Destinations and Its Marketing Implications

This study focuses on college-student travel-patterns, both domestically and internationally. The findings show that there are significant differences in travel patterns, based on three independent variables studied: a student’s gender, a student’s class year, and a student’s home origin. The study uses the student body at a major college in the Northeast of the United States, and provides a detailed analysis of the students’ previous travel patterns, and how they differ by the aforementioned independent variables. Domestic travel and international travel are separately analyzed. Marketing implications are discussed. The study also offers a possible template for studying these relationships at additional colleges and universities, and at other venues, both within the U.S. and outside of the U.S.
Evaluation of Electromagnetic Resonance Designed Pulses for Controlling Potato Brown Rot Caused by Ralstonia solanacearum

12 Arab Congress of Plant Protection ,ACPP ,4 -10 November, 2017 Hurghada Egypt Egyptian Academic Journal of Biological Sciences is the official English language journal of the Egyptian Society for Biological Sciences, Department of Entomology, Faculty of Sciences Ain Shams University. Entomology Journal publishes original research papers and reviews from any entomological discipline or from directly allied fields in ecology, behavioral biology, physiology, biochemistry, development, genetics, systematics, morphology, evolution, control of insects, arachnids, and general entomology. www.eajbs. eg.net Provided for non-commercial research and education use. Not for reproduction, distribution or commercial use.
Organocatalytic promoted coupling of carbon dioxide with epoxides: a rational investigation of the cocatalytic activity of various hydrogen bond donors

A catalytic platform based on an onium salt used in combination with organic cocatalysts of various structures was developed for the efficient CO2/epoxide coupling under mild conditions. Through detailed kinetic studies by in situ FT-IR spectroscopy, a rational investigation of the efficiency of a series of commercially available hydrogen bond donors co-catalysts was realized and the influence of different parameters such as the pressure, the temperature, the catalyst loading, and the nature of the epoxide on the reaction kinetics was evaluated. Fluorinated alcohols were found to be more efficient than other hydrogen bond donor activators proposed previously in the literature under similar conditions.
Measures of Volatility and Aggregate Investment

Recent studies on irreversible investment literature suggest that levels of interest rates and tax rates are relatively less important than various uncertainty measures as determinants of aggregate investment. We attempt to find empirical evidence that aggregate uncertainty and, in particular, variability of inflation as an index of instability matters in aggregate investment decisions. We first follow the methodology of Solimano and Pindyck and, using cross-sectional data for nine OECD countries, observe very low cross-section correlation of inflation volatility and marginal profitability of capital volatility. When we allow for time-varying uncertainty and model it as a GARCH process, we uncover that volatility of marginal profitability of capital indeed changes over time and that GARCH processes of marginal profitability and inflation are the same for eight out of nine OECD countries in the sample. This suggests that the threshold required rate of return and the uncertainty proxied by the volatility of inflation are correlated and that they are moving over time. We conclude by noting the inadequacy of cross-sectional analysis for the testing the implications of the model when uncertainty follows a stochastic process.
Microsoft Word-04_01_01.docx

To overcome the drawbacks of existing methods for traffic classification (by ports, Deep Packet Inspection, statistical classification) a new system has been developed, in which data are collected and classified directly by clients installed on machines belonging to volunteers. Our approach combines the information obtained from the system sockets, the HTTP content types, and the data transmitted through network interfaces. It allows grouping packets into flows and associating them with particular applications or types of service. This paper presents the design of our system, implementation, the testing phase and the obtained results. The performed threat assessment highlights potential security issues and proposes solutions in order to mitigate the risks. Furthermore, it proves that the system is feasible in terms of uptime and resource usage, assesses its performance and proposes future enhancements. We released the system under The GNU General Public License v3.0 and published as a SourceForge project called Volunteer-Based System for Research on the Internet.
Perspectives of Business and Entrepreneurship Development in Digital Age

Purpose of the article By the end of 2006, findings in the Lake Albert region of Uganda recommended that entire oil reserves in the block would add up to 2.5 billion barrels. This would mark the Albertine Graben one of the biggest onshore oil fields in Africa and would guarantee the potential to convert Uganda's agriculture-based economy. However, the governance of this resource faces numerous challenges. The aim of this research is to get a clear overview of these challenges considering the citizen perspective, since they are affected by the process of oil exploitation. Methodology/methods A mixture of mutual quantitative and qualitative procedures was used. A sample of n=70 respondents was studied using structured questionnaires, our data was subjected to Excel analysis. Scientific aim To explore, describe as well as obtaining the perceptions of selected Ugandans about oil discovery, exploitation and major challenges facing the sector. Findings There was found that Lack of government commitment on clear policies 29 %, corruption 56 %, 3 % environmental liabilities, absence of clear land rights, Political insecurity 3 %, limited planning 6 %. Other findings show that Uganda is witnessing a violation of communities’ land rights in the Albertine oil region. Conclusions Land rights like any other property rights in the country are out of order and hence limiting efficiency in business in terms of transferability, enforceability and exclusivity. The government of Uganda needs to handle the matter not only with urgency but also be more rational in this regard.
Use of embedded brand community networks for brand co-creation

Although social media has seen prolific growth in recent years, very little attention has been given to embedded brand communities within these media channels and their impact on brands. This paper discusses how brand communities emerging within social networking sites can be used as a valuable branding tool in collaborative marketing. We present a conceptual framework using social network theory and self-determination theory to demonstrate how an individual‟s relational perspective and structural position within any embedded brand community network in social media can help in predicting an individual‟s motivation to participate, peer-to-peer information flow and influence susceptibility.
The Many Meanings/Aspects of Emotion: Definitions, Functions, Activation, and Regulation

Many psychological scientists and behavioral neuroscientists affirm that “emotion” influences thinking, decision-making, actions, social relationships, well-being, and physical and mental health. Yet there is no consensus on a definition of the word “emotion,” and the present data suggest that it cannot be defined as a unitary concept. Theorists and researchers attribute quite different yet heuristic meanings to “emotion. ” They show considerable agreement about emotion activation, functions, and regulation. The central goal of this article is to alert researchers, students, and other consumers of “emotion” research to the multiple meanings or aspects that distinguished scientists attribute to ”emotion,” increase appreciation of its interesting and challenging complexity, and sharpen perspectives on “emotion” and the associated body of literature that is of critical significance to science and society.
Factors Relating to the Reproductive Biology of Georges Bank Haddock (Melanogrammus aeglefinus) in 1977-83

Distribution, sexual maturity, spawning dates and temperature preferences of Georges Bank haddock (Melanogrammus aeglefinus L.) were investigated with data collected on spring bottom-trawl surveys in 1977-83. The results agree with earlier work that peak spawning occurs during late March or early April and that preferred bottom temperatures ranged from 4° to 7° C. The Northeast peak of Georges Bank appeared to be the most important spawning area, but the area to the east of the Great South Channel in depths less than 100 m was also important during some years. Length at 50% maturity averaged 37 cm for males and 40cm forfemales, and a response to large incoming year-classes was noted. The stock was composed of about 37% mature individuals at age 2 and 90% at age 3, butthese percentages varied by sex and year. Sex ratios averaged 1.33: 1 in favor of females during the period and were skewed in favor of females in every year.
Methods for Translating Evidence-Based Behavioral Interventions for Health-Disparity Communities

Populations composed of racial/ethnic minorities, disabled persons, and people with low socioeconomic status have worse health than their counterparts. Implementing evidence-based behavioral interventions (EBIs) to prevent and manage chronic disease and disability in community settings could help ameliorate disparities. Although numerous models of implementation processes are available, they are broad in scope, few offer specific methodological guidance, and few address the special issues in reaching vulnerable populations. Drawing from 2 existing models, we describe 7 methodological phases in the process of translating and implementing EBIs in communities to reach these vulnerable groups: establish infrastructure for translation partnership, identify multiple inputs (information gathering), review and distill information (synthesis), adapt and integrate program components (translation), build general and specific capacity (support system), implement intervention (delivery system), and develop appropriate designs and measures (evaluation). For each phase, we describe specific methodological steps and resources and provide examples from research on racial/ethnic minorities, disabled persons, and those with low socioeconomic status. Our methods focus on how to incorporate adaptations so that programs fit new community contexts, meet the needs of individuals in health-disparity populations, capitalize on scientific evidence, and use and build community assets and resources. A key tenet of our approach is to integrate EBIs with community best practices to the extent possible while building local capacity. We discuss tradeoffs between maintaining fidelity to the EBIs while maximizing fit to the new context. These methods could advance our ability to implement potentially effective interventions to reduce health disparities.
Molecular Medicinal Chemistry IDECEFYN

An efficient protocol for in vitro propagation of Hedeoma multiflorum Benth (“Tomillo de las Sierras”) was established. To determine the effect of different medium and plant growth regulators on the growth rates and essential oil production, nodal segments from in vitro 90-days old plantlets were incubated on the following media: 1) SH (Schenk and Hildebrandt); 2) WP (Lloyd and McCown); 3) B5 (Gamborg). All the media studied were supplemented with different combinations and consentrations of growth regulators: naphtaleneacetic acid (NAA) and 6-benzyl adenine (BA). The optimal shoot length and number of nodes of the plantlets, showing no statistical difference, were obtained in WP with the addition of 2.69:0.5 μM, 0.5:0.5 and 2.69:0.05 μM of NAA:BA and in absence of these growth regulators (control). The best multiple shoot medium with no statistical difference, corresponded to SH with the addition of 0.5:2.25 μM and B5 with 0.05:2.25, 0.5:2.25 and 2.69:2.25 μM of NAA:BA. The major essential oil determined by GC/MS, were common in all the plantlets grown in all the media being pulegone (62-64%) , menthone (25-28 %) and isomenthone (2-2,3%).
Injuries of Worker Bees (Apis Mellifera Carnica) Stored in Own and Stranger Queenright Colonies

Abstract This research was conducted in 2008 and 2010 in the experimental apiary of the Warsaw University of Life Sciences. Worker bees were stored in transport cages in their own colonies and stranger colonies. The number of injuries and the death rate were checked twice, after 3 and 7 days of storage. In total, 6720 bees were examined (3360 workers from their own colonies and the same number from stranger colonies). The number of injured and dead workers had an exponential distribution (skewness>1). The worker bees sustained significantly more leg injuries (missing leg segments - 92 - 96%) than injuries of arolia (13 - 15%), wings (1 - 7%) or antennae (1 - 2). Worker bees stored in stranger colonies were injured significantly more frequently than worker bees stored in their own colonies. A significantly greater number of bees died in stranger colonies than in own colonies. The fact that bees stored in own colonies were injured proves that, even if they have the same smell, bees kept in cages provoke aggressive behavior from bees belonging to the banking colony.
Discovery of new rapidly oscillating Ap pulsators in the UVES survey of cool magnetic Ap stars

We have carried out a survey of short-period pulsations among a sample of carefully chosen cool Ap stars using time-resolved observations with the Ultraviolet and Visual Echelle Spectrograph at the European Southern Observatory ESO 8 m Very Large Telescope. Here, we report the discovery of pulsations with amplitudes 50-100 m s(-1) and periods 7-12 min in HD 132205, HD 148593 and HD 151860. These objects are therefore established as new rapidly oscillating Ap (roAp) stars. In addition, we independently confirm the presence of pulsations in HD 69013, HD 96237 and HD 143487 and detect, for the first time, radial velocity oscillations in two previously known photometric roAp stars HD 119027 and HD 185256. At the same time, no pulsation variability is found for HD 5823, HD 178892 and HD 185204. All of the newly discovered roAp stars were previously classified as non-pulsating based on the low-precision ground-based photometric surveys. This shows that such observations cannot be used to reliably distinguish between pulsating and non-pulsating stars and that all cool Ap stars may harbour p-mode pulsations of different amplitudes.
Restoration and intensive management have no effect on evolutionary strategies

The European bison Bison bonasus is the largest extant terrestrial mammal on the European continent; however, the species went extinct in the wild in 1919. Restoration started in 1929 in Poland's Biaoowiez u a Primeval Forest using captive individuals sourced from zoological gardens and breeding centres. Of the 7 founders, 2 individuals contributed 85% to the genetic make-up of the lowland line of the species. The Biaoowiez u a bison population numbered 820 in 2008, but very low genetic diversity and a high level of management have raised questions as to whether it still conforms to evolutionary predictions. We tested whether the sex ratio of European bison calves conformed to the Trivers-Willard hypothesis at the population level, i.e. whether it became increasingly female-biased as bison condition deteriorated following increased popula- tion density. We found that increased population density and reduced female body mass led to increasing female-biased calf sex ratios, whereas mast years (abundant food resources) corre- sponded to male-biased sex ratios. Despite the high degree of inbreeding and management, Euro- pean bison are still responding as expected to variations in female body condition; however, the precautionary principle cautions managers of small populations that artificial selection can alter the evolutionary strategy of wildlife even though we did not detect this in the Biaoowiez ua bison population.
The Changing Basis of Party Competition: Education, Authoritarian–Libertarian Values and Voting

The role of social structure as a determinant of electoral behaviour has been debated across Western countries, with one side in the debate arguing that the rise of the electoral conflict between authoritarian–libertarian values reflects the diminishing importance of socio-structural factors. In contrast, this article shows, using a unique representative sample from Denmark, how this conflict has its roots in an opposition between high- and low-education groups that divide over authoritarian–libertarian values, have developed education-based identities and group consciousness, and are influenced by these factors to vote for parties, each mobilizing their side in the conflict – that is, that the authoritarian–libertarian conflict is based on an education cleavage. Documenting for the first time the influence of education-based identity and group consciousness on voting, these findings demonstrate that socio-structural factors – partly through the voters’ social identities and consciousness – continue to play an important role for electoral behaviour in Western countries. Likewise, the findings suggest that the conflict over authoritarian–libertarian values will have lasting importance for politics in these countries. The logical next step, therefore, will be to extend the analyses to the comparative level.