Miracle-dz/UniFAR-FTUs huggingface dataset:
On the capacity of noncoherent wideband MIMO-OFDM systems

We study the capacity behavior of full-band MIMO-OFDM systems in the absence of channel state information both at the transmitter and the receiver. Based on capacity lower and upper bounds, we quantify the transmission rate penalty due to channel uncertainty as a function of the number of transmit antennas, the number of resolvable taps in the channel, the power delay profile, and the bandwidth. Our analysis reveals that for a given bandwidth and transmit power there is an optimum, capacity-maximizing, number of transmit antennas. Numerical results show that using a large number of transmit antennas in systems employing bandwidths of several GHz (such as in ultrawideband systems) is detrimental from a capacity point of view. Finally, we evaluate the capacity performance of space-frequency unitary codebooks recently introduced in M. Borgmann and H. Bolcskei, (2005)
Improved weighted cooperative spectrum sensing algorithm based on reliability in cognitive radio networks

Cognitive radio (CR) is a prominent candidate to solve the spectrum scarcity problem faced by the proposed as well as existing wireless services. It exploits the opportunities, also called as spectrum holes, and created due to the underutilization of the licensed spectrum. Spectrum sensing plays the most important role to detect these spectrum holes. Individual CR sometimes faces problems in accurate spectrum sensing due to shadowing, hidden terminal problem and multipath fading. Cooperative spectrum sensing (CSS) is considered as a one of the solutions to tackle these problems in which more than one CR users collaboratively perform the spectrum sensing. In this paper all the CR nodes participating in CSS have been distinguished based on their reliability. The reliability of nodes depends on the past decisions of corresponding node and of the central node (fusion center). Considering the reliability of each CR a new reliability based weighted algorithm has been proposed for CSS. The proposed algorithm improves the spectrum sensing performance mainly in low SNR regions of the primary users which is a most challenging task in cognitive radio.
The efficacy of message frames on recreational boaters’ aquatic invasive species mitigation behavioral intentions

ABSTRACT Aquatic invasive species (AIS) management often requires a human-centered focus that entails communicating with resource-users about needed mitigation behaviors. Messaging is a common communication practice to this end, and evaluating how messaging influences user behavior is an essential component. To test the effects of messaging on AIS mitigation behavioral intentions, 1,338 participants were randomly assigned to one of four message framing conditions: standard, regulation, descriptive, and injunctive. Overall, a significant effect of message framing was observed, with regulation-framed messages garnering significantly higher intentions. Further analysis revealed a significant main effect of messaging among participants reporting low frequencies of past behaviors. Similar results were found among participants reporting stronger perceived barriers to AIS mitigation behaviors. We discuss these results in relation to other message framing studies, their managerial implications, and future research directions.
Inhibition of tumor growth by elimination of granulocytes

As observed for many types of cancers, heritable variants of ultraviolet light-induced tumors often grow more aggressively than the parental tumors. The aggressive growth of some variants is due to the loss of a T cell-recognized tumor-specific antigen; however, other variants retain such antigens. We have analyzed an antigen retention variant and found that the variant tumor cells grow at the same rate as the parental tumor cells in vitro, but grew more rapidly than the parental cells in the T cell-deficient host. The growth of the variant cells was stimulated in vitro by factors released from tumor-induced leukocytes and by several defined growth factors. In addition, the variant cancer cells actually attracted more leukocytes in vitro than the parental cells. Furthermore, elimination of granulocytes in vivo in nude mice by a specific antigranulocyte antibody inhibited the growth of the variant cancer, indicating that this tumor requires granulocytes for rapid growth.
The circumstellar environment of Wolf–Rayet stars and gamma‐ray burst afterglows

We study the evolution of the circumstellar medium of massive stars. We pay particular attention to Wolf-Rayet stars that are thought to be the progenitors of some long Gamma-Ray Bursts. We detail the mass-loss rates we use in our stellar evolution models and how we estimate the stellar wind speeds during different phases. With these details we simulate the interactions between the wind and the interstellar medium to predict the circumstellar environment around the stars at the time of core-collapse. We then investigate how the structure of the environment might affect the GRB afterglow. We find that when the afterglow jet encounters the free-wind to stalled-wind interface that rebrightening occurs and a bump is seen in the afterglow light curve. However our predicted positions of this interface are too distant from the site of the GRB to reach while the afterglow remains observable. The values of the final-wind density, A�, from our stellar models are of the same order (. 1) as some of the values inferred from observed afterglow � �
A Proportional Jitter Scheduling and Buffer Management Algorithm for Differentiated Services Networks

This paper proposes a method for scheduling and buffer management in differentiated services networks which is based on JoBS algorithm. JoBS differentiates traffic classes base on delay and loss rate. Furthermore, it supports both relative and absolute constraints. Nowadays with the expansion of Internet traffic and its diversified service requests, the focus is on requirement of new traffic used on the Internet. The proposed method focuses on packet scheduling based on the jitter (variance of delay), since new traffics that will be mostly used in the next generation Internet are more susceptible to variance of delay. Drawing on concepts of jitter and the difference between scheduling base on jitter and delay, this paper analyzes the effectiveness of the proposed method by simulation examples that are presented here. Results show that proposed method can proportionally differentiated classes based on delay, loss rate and jitter. Also, it fulfills the absolute conditions which are defined by absolute parameters. This paper concludes with the suggestion that this method comparing to the JoBS can proportionally differentiate classes based on more parameters and its result of differentiation is better.
Uncovering Reactions to the Racial Resentment Scale across the Racial Divide

Race remains at the forefront of the public agenda, and understanding how white and black Americans understand race relations and racial issues has become all the more critical. Amid the lively debate surrounding the meaning of the racial resentment scale, we utilize open-ended reactions from white and black Americans to identify the key themes that emerge from how both whites and blacks understand this canonical measure. Based on these reactions, we suggest that the scale should be recast as Structural versus Individual Attributions for Black Americans’ Economic and Social Status (SIA) and advocate further investigation into similarities and differences in black and white public opinion.
Most and Least Helpful Events in Three Supervision Modalities.

The authors conducted a content analysis of supervisors’ (n = 10) and supervisees’ (n = 31) descriptions (n = 707) of most and least helpful significant events in individual, group, and triadic supervision across 1 semester. Categories by group for each modality and areas of agreement and disagreement are highlighted.
Defining the density debate: Social representations of urban consolidation in Brisbane

This thesis is concerned with understanding the social representations that impact on how stakeholders understand, value and act in relation to urban consolidation, a planning policy designed to increase the density of housing in existing urban areas. The study revealed that urban consolidation is a complex topic that involves associated issues of land use conflict, regional population management, investment and property, home and housing affordability, neighbourhood change and urban renewal. Urban consolidation is a political topic subject to vested interests and often doesn't achieve the positive outcomes for which it is promoted in policy documents.
Immunomodulatory Effect of Stichopus japonicus Acid Mucopolysaccharide on Experimental Hepatocellular Carcinoma in Rats

Stichopus japonicus acid mucopolysaccharide (SJAMP) is an important biologically active compound that can be extracted from the body wall of the sea cucumber. The present study investigated the anti-tumor and immunomodulatory effects of SJAMP in an experimental hepatocellular carcinoma (HCC) model in rats. Three doses of SJAMP (17.5 mg/kg, 35 mg/kg, and 70 mg/kg administered 5 days/week via oral gavage) were given to rats with diethylnitrosamine (DEN)-induced HCC. SJAMP treatment significantly inhibited DEN-induced HCC by reducing both the number and mean volume of nodules, decreasing serum α-fetoprotein (AFP) levels and proliferating cell nuclear antigen (PCNA) expression in liver, and increasing p21 expression. Furthermore, SJAMP decreased the serum levels of ALT, AST, GGT and TNF-α and increased serum IL-2. SJAMP administration also improved indices of spleen and thymus function and improved both macrophage phagocytosis and NK cell-mediated tumoricidal activity. Moreover, CD3+ and CD4+ T lymphocyte levels recovered significantly and the CD4+/CD8+ T cell ratio normalized in a dose-dependent manner. In conclusion, SJAMP effectively inhibited the growth of HCC through the stimulation of immune organs and tissue proliferation, leading to the enhancement of cellular immunity pathways in rats.
Mentalization theory as an organisational framework: An evaluation of the AMBIT (Adolescent Mentalization-Based Integrative Treatment) approach

This thesis focuses on the novel use of mentalization theory as an explicit organisational framework and its impacts on team effectiveness. The research project was jointly conducted with two other trainee clinical psychologists, Paul Gelston (2015) and Rashal Ullah (2015). Part one of the thesis presents the literature review and categories team effectiveness findings in the mental health care literature, with a particular focus on team input and process factors. The final 22 studies identified team input and process factors that contributed to clinical effectiveness of mental health services. However, there was a lack of rigorous conceptualization of team dimensions, processes, traits and outcomes, with certain team factors being under-researched in mental health settings. Part two is the empirical research paper, which evaluates the use of Mentalization theory in improving team-working as used by AMBIT (Adolescent Mentalization-Based Integrative Treatment). It investigates whether teams using AMBIT have greater team effectiveness, greater reflective capacity, and different coping styles to stress compared to other teams working with similar client groups. The findings suggest that a mentalizing organizational framework may contribute to adaptive coping responses. The staffs’ coping styles was also associated with increased sense of participative safety in the team. There was no difference in team effectiveness between AMBIT teams and other teams, when controlled for covariates. Part three critically appraises this work. The experience of conducting the thesis is examined with suggested retrospective improvement to the study. Reflections on the issues that arose during the process of research are highlighted.
Molecular Analysis of TTF-1 and TTF-2 Genes in Patients with Early Onset Papillary Thyroid Carcinoma

Two common variants, close from TTF-1 and TTF-2, were shown to predispose to thyroid cancer (TC) in European populations. We aimed to investigate whether TTF-1 and TTF-2 variants might contribute to TC early onset (EO). Tumor samples from eighteen patients with papillary TC (PTC), who underwent total thyroidectomy at an age of ≤21, were screened for TTF-1 and TTF-2 variants. No TTF-1 variants were documented; two novel germinal TTF-2 variants, c.200C>G (p.A67G) and c.510C>A (p.A170A), were identified in two patients. Two already described TTF-2 variants were also documented; the allelic frequency among patients was not different from that observed among controls. Moreover, RET/PTC rearrangements and the BRAFV600E mutation were identified in 5/18 and 2/18 PTCs, respectively. Thyroglobulin (TG) and thyroid peroxidase (TPO) expression was found to be significantly decreased in tumors, and the lowest level of TPO expression occurred in a tumor harboring both the p.A67GTTF-2 variant and a RET/PTC3 rearrangement.
Clinical Neuropsychologist

Scientific research attempts to shed light on the nature of the functional abnormality of the dyslexic student that leads to the intense difficulty in recognizing letters. The question of whether it is endogenous or environmental factors that cause the impairment has been resolved and the innate nature of dyslexia is now known. What scientists are trying to discover is how this functional damage manifests itself, and consequently, which functions are not carried out in the correct way, resulting in reading and writing disorders. Opinions on this topic are guided by the discipline to which the scientist who will research it belongs. The present study concerns the neuropsychological perspective of dyslexia.
A Novel Virulence Gene in Klebsiella pneumoniae Strains Causing Primary Liver Abscess and Septic Metastatic Complications

Primary Klebsiella pneumoniae liver abscess complicated with metastatic meningitis or endophthalmitis is a globally emerging infectious disease. Its pathogenic mechanism remains unclear. The bacterial virulence factors were explored by comparing clinical isolates. Differences in mucoviscosity were observed between strains that caused primary liver abscess (invasive) and those that did not (noninvasive). Hypermucoviscosity correlated with a high serum resistance and was more prevalent in invasive strains (52/53 vs. 9/52; P < 0.0001). Transposon mutagenesis identified candidate virulence genes. A novel 1.2-kb locus, magA, which encoded a 43-kD outer membrane protein, was significantly more prevalent in invasive strains (52/53 vs. 14/52; P < 0.0001). The wild-type strain produced a mucoviscous exopolysaccharide web, actively proliferated in nonimmune human serum, resisted phagocytosis, and caused liver microabscess and meningitis in mice. However, magA − mutants lost the exopolysaccharide web and became extremely serum sensitive, phagocytosis susceptible, and avirulent to mice. Virulence was restored by complementation using a magA-containing plasmid. We conclude that magA fits molecular Koch's postulates as a virulence gene. Thus, this locus can be used as a marker for the rapid diagnosis and for tracing the source of this emerging infectious disease.
Can You Increase Your Performance in a Technology-Driven Society Full of Distractions?

The main goal of this current study is to contribute to the cognitive Information Systems (IS) literature by examining the effect of individuals’ focus ability and mind-wandering in influencing IS task performance at different levels of task complexity. The effects of focus ability and mind-wandering on IS task performance as well as the moderating roles of IS task complexity were examined in a laboratory experiment. The experimental results show that (1) higher task complexity leads to lower IS task performance; (2) under low task complexity, focus ability and mind-wandering do not have any significant effects on task performance; (3) under medium task complexity, focus ability leads to higher performance accuracy, but mind-wandering does not have a significant effect on performance accuracy; (4) under high task complexity, both focus ability and mind-wandering lead to higher performance accuracy. Furthermore, mind-wandering negatively influences performance efficiency under all levels of IS task complexity.
Chytridiomycosis of Marine Diatoms—The Role of Stress Physiology and Resistance in Parasite-Host Recognition and Accumulation of Defense Molecules

Little is known about the role of chemotaxis in the location and attachment of chytrid zoospores to potential diatom hosts. Hypothesizing that environmental stress parameters affect parasite-host recognition, four chytrid-diatom tandem cultures (Chytridium sp./Navicula sp., Rhizophydium type I/Nitzschia sp., Rhizophydium type IIa/Rhizosolenia sp., Rhizophydium type IIb/Chaetoceros sp.) were used to test the chemotaxis of chytrid zoospores and the presence of potential defense molecules in a non-contact-co-culturing approach. As potential triggers in the chemotaxis experiments, standards of eight carbohydrates, six amino acids, five fatty acids, and three compounds known as compatible solutes were used in individual and mixed solutions, respectively. In all tested cases, the whole-cell extracts of the light-stressed (continuous light exposure combined with 6 h UV radiation) hosts attracted the highest numbers of zoospores (86%), followed by the combined carbohydrate standard solution (76%), while all other compounds acted as weak triggers only. The results of the phytochemical screening, using biomass and supernatant extracts of susceptible and resistant host-diatom cultures, indicated in most of the tested extracts the presence of polyunsaturated fatty acids, phenols, and aldehydes, whereas the bioactivity screenings showed that the zoospores of the chytrid parasites were only significantly affected by the ethanolic supernatant extract of the resistant hosts.
Pengaruh Kualitas Pelayanan Petugas terhadap Kepuasan Pengunjung di Objek Wisata Sejarah Benteng Marlborough di Kota Bengkulu

Handika Fikri Pratama; This research is intended to know the influence of service quality (Reliability, Responsiveness, Assurance, Empathy and Tangibles) either partially or simultaneously to the satisfaction of customers and to know the more dominant influence from quality service. This research used quantitative method. There were 100 samples collected using accidental sampling. Collected using questioner and documentation. Instrument test is done by validity and reliability test. Multiple linear regression and classical assumption test used as analysis test. Hypothesis test is done by F test and t test.Result of this research shows take value of value Reliability, Responsiveness, Assurance, Empathy and Tangibles variable have significant influence to dependent variable (Y) simultaneously. Tangibles don't have significant influence to variable (Y) Partially. Reliability, Responsiveness, Assurance and Empathy variable have significant influence to dependent variable (Y). The value of determination coefficient (R Square) 97,6% it means that the independent variable may describe the dependent variables, while the remaining 2,4% is explained by the other independent variables which are not included in the this research.
It's Free for a Reason: Exploring the Ecosystem of Free Live Streaming Services

Recent years have seen extensive growth of services enabling free broadcasts of live streams on the Web. Free live streaming (FLIS) services attract millions of viewers and make heavy use of deceptive advertisements. Despite the immense popularity of these services, little is known about the parties that facilitate it and maintain webpages to index links for free viewership. This paper presents a comprehensive analysis of the FLIS ecosystem by mapping all parties involved in the anonymous broadcast of live streams, discovering their modus operandi, and quantifying the consequences for common Internet users who utilize these services. We develop an infrastructure that enables us to perform more than 850,000 visits by identifying 5,685 free live streaming domains, and analyze more than 1 Terabyte of traffic to map the parties that constitute the FLIS ecosystem. On the one hand, our analysis reveals that users of FLIS websites are generally exposed to deceptive advertisements, malware, malicious browser extensions, and fraudulent scams. On the other hand, we find that FLIS parties are often reported for copyright violations and host their infrastructure predomi- nantly in Europe and Belize. At the same time, we encounter substandard advertisement set-ups by the FLIS parties, along with potential trademark infringements through the abuse of domain names and logos of popular TV channels. Given the magnitude of the discovered abuse, we engineer features that characterize FLIS pages and build a classifier to identify FLIS pages with high accuracy and low false positives, in an effort to help human analysts identify malicious services and, whenever appropriate, initiate content-takedown requests.
Greek early childhood educators’ conceptualization of education, care and educare concepts

Abstract Drawing on kindergarten teachers’ and University departments’ reactions to the Greek government’s initiative to adopt an integrated Early Childhood Education and Care (ECEC) system, the present study aimed to explore how various ECEC professional groups working in the two main preschool programs operating in Greece define different aspects inherent to ECEC theory and practice. Results yielded both similarities and differences, with aspects of health and well-being characterized mostly as having both a ‘care’ and an ‘education’ aspect, whereas personal and professional development and communication, management and administrative factors were characterized as educational in nature. Discrepancies were revealed in terms of child development, education and play and social environment factors, with those working in childcare settings defining them as including both ‘care’ and ‘education’ whereas those working in kindergartens defined them as educational in nature.
DNA topoisomerase I in oncology: Dr Jekyll or Mr Hyde?

Mammalian DNA topoisomerase I is a multifunctional enzyme which is essential for embryonal development. In addition to its classical DNA nick-ing-closing activities which are needed for relaxation of supercoiled DNA, topoisomerase I can phosphorylate certain splicing factors. The enzyme is also involved in transcriptional regulation through its ability to associate with other proteins in the TFIID-, and possibly TFIIH-, transcription complexes, and is implicated in the recognition of DNA lesions. Finally, topoisomerase I is a recombinase which can mediate illegitimate recombination. A crucial reaction intermediate during relaxation of DNA is the formation of a DNA-topoisomerase I complex (the cleavable complex) where topoisomerase I is covalently linked to a 3′-end of DNA thereby creating a single stranded DNA break. Cleavable complexes are also formed in the vicinity of DNA lesions and in the presence of the antitumor agent, camptothecin. While formation of cleavable complexes may be necessary for the initial stages of the DNA damage response, these complexes are also potentially dangerous to the cell due to their ability to mediate illegitimate recombination, which can lead to genomic instability and oncogenesis. Thus the levels and stability of these complexes have to be strictly regulated. This is obtained by maintaining the enzyme levels relatively constant, by limiting the stability of the cleavable complexes through physical interaction with the oncogene suppressor protein p53 and by degradation of the topoisomerase I by the proteasome system. Emerging evidence suggest that these regulatory functions are perturbed in tumor cells, explaining at the same time why topoisomerase I activities so often are increased in certain human tumors, and why these cells are sensitized to the cytotoxic effects of camptothecins.