Miracle-dz/UniFAR-FTUs huggingface dataset:
Design and construction of a highly efficient low cost wideband corrugated conical horn

This paper deals with the design and construction of an inexpensive, compact wideband conical corrugated horn using aluminium plates that produce symmetric radiation patterns, good impedance match and low cross-polarisation. One of the objectives of this paper is to produce a low cost, small and compact antenna without compromising the copolar patterns. With these objectives in mind, a unique design methodology was used. The conical corrugated horn was manufactured with aluminium plates. These plates have varying diameters in the centre and when bolted together, slots and ridges also known as the corrugations were formed. These plates have equal widths and changes to the radiation characteristics and bandwidth can be easily made to the design by either removing or adding plates to it. The final design has shown successful results with symmetrical E and H plane radiation patterns, good impedance match with a VSWR<2 over a bandwidth of 6 GHz, low crosspolar levels, compactness and inexpensiveness. This corrugated horn can be used for many applications like feed horn for reflector dishes, spacecraft antennas or radar. And most importantly, the horn has design and application flexibility by changing the dimensions of the aluminium slots to alter its characteristics.
Satellite RNA is essential for encapsidation of groundnut rosette umbravirus RNA by groundnut rosette assistor luteovirus coat protein.

Groundnut rosette disease is caused by a complex of agents comprising groundnut rosette umbravirus (GRV), GRV satellite RNA (sat-RNA)groundnut rosette assistor luteovirus (GRAV). Both GRAV and GRV sat-RNA are needed for GRV to be aphid transmissible. To understand the role of GRAVGRV sat-RNA in the aphid transmission of GRV, encapsidation of GRV genomicsatellite RNAs has been studied using transgenic Nicotiana benthamiana plants expressing GRAV coat protein (CP). GRAV CP expressed from a transgene was shown to package GRV genomicsatellite RNAs efficiently, giving a high yield of transcapsidated virus particles. GRV sat-RNA was absolutely essential for this process. GRV genomic RNA was not encapsidated by GRAV CP in the absence of the sat-RNA. Using different mutants of GRV sat-RNA, it was found that some property of full-length satellite RNA molecules, such as size or specific conformation rather than potential open reading frames, was required for the production of virus particles. A correlation between the ability of sat-RNA to stimulate encapsidation of GRV RNA by GRAV CPits capacity to promote aphid transmission of GRV was observed.
Power Flow Control and Network Stability in an All-Electric Ship

The concept of an all-electric ship, while offering unprecedented advantages from the point of view of efficiency and flexibility of operation, has introduced new challenges in terms of stability and power flow control. The advent of a full power electronics power system has raised new questions from the point of view of system dynamics, particularly when dealing with the new medium-voltage direct current distribution. The overall goal of guaranteeing a secure operation of the power system has brought researchers to consider two main approaches: reducing the dynamics of the large load to operate in a range of dynamics compatible with traditional generation systems, or making the generator set smarter through its power electronics interface. This paper compares these approaches to stable operation, focusing on the latter considered more in line with the progress of technology and in general more appealing.
The role of parents, friends and teachers in adolescents' cigarette smoking and tombak dipping in Sudan

Objective To assess the influence of smoking and tombak (local smokeless tobacco) dipping by parents, teachers and friends on cigarette smoking and tombak dipping by school-going Sudanese adolescents. Methods This was a school-based cross-sectional survey was conducted in 2005–2006. Logistic regression was used for the analysis. A total of 4277 Sudanese school-going adolescents (aged 11–17 years) from 23 schools who completed an anonymous self-administered questionnaire on the use of tobacco products. Main outcome measures were self-reported tobacco use during the previous month defined current tobacco use. Ever smoking, tombak dipping and other tobacco products were also considered as outcomes. Results After adjusting for sex, age and school grade, adolescents' smoking habits were strongly associated with the habit in their parents and friends and, more weakly, with tombak dipping by teachers. When adjusted for each other, the association with smoking in friends was unaffected and remained significant (prevalence OR (POR) of having ever smoked was 1.94, 95% CI 1.64 to 2.29; OR of being current smoker was 3.77, 95% CI 2.80 to 5.07). Tobacco smoking in friends was positively associated with adolescents ever tombak dipping (POR 1.81, 95% CI 1.41 to 2.33) and current dipping (OR 3.33, 95% CI 2.20 to 5.05). The association with parental habits was reduced but still significantly elevated. Tombak dipping by teachers was only associated with adolescents ever tobacco smoking. Conclusions Tobacco use by parents, teachers and friends was associated with adolescents' tobacco habits. The influence of friends was the strongest. In developing programmes against adolescents' tobacco habits, there is need to target the influence of these ‘significant others’. Sudan needs to develop and implement comprehensive anti-smoking and anti-tombak dipping legislation to reduce the growing prevalence of such habits.
Accurate prediction of neuroblastoma outcome based on miRNA expression profiles

For neuroblastoma, the most common extracranial tumour of childhood, identification of new biomarkers and potential therapeutic targets is mandatory to improve risk stratification and survival rates. MicroRNAs are deregulated in most cancers, including neuroblastoma. In this study, we analysed 430 miRNAs in 69 neuroblastomas by stem‐loop RT‐qPCR. Prediction of event‐free survival (EFS) with support vector machines (SVM) and actual survival times with Cox regression‐based models (CASPAR) were highly accurate and were independently validated. SVM‐accuracy for prediction of EFS was 88.7% (95% CI: 88.5–88.8%). For CASPAR‐based predictions, 5y‐EFS probability was 0.19% (95% CI: 0–38%) in the CASPAR‐predicted short survival group compared with 0.78% (95%CI: 64–93%) in the CASPAR‐predicted long survival group. Both classifiers were validated on an independent test set yielding accuracies of 94.74% (SVM) and 5y‐EFS probabilities as 0.25 (95% CI: 0.0–0.55) for short versus 1 ± 0.0 for long survival (CASPAR), respectively. Amplification of the MYCN oncogene was highly correlated with deregulation of miRNA expression. In addition, 37 miRNAs correlated with TrkA expression, a marker of excellent outcome, and 6 miRNAs further analysed in vitro were regulated upon TrkA transfection, suggesting a functional relationship. Expression of the most significant TrkA‐correlated miRNA, miR‐542‐5p, also discriminated between local and metastatic disease and was inversely correlated with MYCN amplification and event‐free survival. We conclude that neuroblastoma patient outcome prediction using miRNA expression is feasible and effective. Studies testing miRNA‐based predictors in comparison to and in combination with mRNA and aCGH information should be initiated. Specific miRNAs (e.g., miR‐542‐5p) might be important in neuroblastoma tumour biology, and qualify as potential therapeutic targets.
Variation in properties of the sediment following electrokinetic treatments

ABSTRACT Many studies have reported variation in properties of the sediment within electrokinetic treatments (EKTs). However, we aim to reveal the variation in properties of the sediment following EKTs through laboratory experiments. We collected sewage-derived sediment from a littoral region, and passed it through a 2-mm sieve. We used a potentiostat to cause electrical current in EKT. We measured the sediment properties such as pH, redox potential (ORP), and hydrogen sulphide (H2S) concentration at the end of EKT and at 30 days following EKT. Results showed decreases in pH, increases in ORP, and decreases in H2S concentration at the end of EKT. Compared with the sediment without EKT, the decrease in ORP for the sediment within EKT was higher at 30 days following EKT. These suggest that anaerobic digestion of organic compounds occurs in the sediment following EKT, of which the oxidants produced by EKT serve as electron acceptors and organic compounds serve as electron donors. Furthermore, we found that EKT can remove H2S from the sediment and reduce H2S production in the sediment within EKT when compared to the case without EKT. These ensure that EKT can be used to remove H2S and control H2S production in the sediment.
Update on cystic hydatid disease

Purpose of review Cystic echinococcosis, or cystic hydatidosis, is a complex, chronic disease with a cosmopolitan distribution. In humans, its clinical spectrum ranges from asymptomatic infection to severe, rarely even fatal disease. Four approaches in clinical management exist: surgery, percutaneous techniques and drug treatment for active cysts, and the so-called watch and wait approach for inactive cysts. Allocation of patients to these treatments should be based on cyst stage, size and location, available clinical expertise and comorbidities. However, clinical decision algorithms, efficacy, relapse rates, and costs have never been properly evaluated. We review the currently available evidence for clinical decision-making and discuss ways to improve standards of care of one of the most neglected infectious diseases. Recent findings Data are mostly derived from case series and small clinical trials, and treatment guidelines remain at the level of expert opinion. No single high-quality comparative clinical trial of the four treatment options is available to resolve important questions such as stage-specific allocation of treatments, adverse events and long-term relapse rates. Recent work is beginning to acknowledge this problem. Summary Currently, four treatment modalities are available for cystic echinococcosis. The level of evidence on which clinicians have to rely is low. For the time being patients should thus be treated in referral centres. Proper comparative clinical trials are urgently needed.
Overlap effect analysis in cellular networks using mobile access technology WCDMA

This paper presents an analysis of the factors affecting coverage and capacity estimation in cellular networks of third generation (3G) technology using wideband code division multiple access (WCDMA). Particularly in WCDMA systems, the main source of interference by coverage is the overlapping between cells, affecting the capacity of system. To analyze the factors affecting the capacity of a WCDMA network, we use the radio-planning tool Atoll™ where we simulate and describe two scenarios for the city of Managua. The first scenario shows the WCDMA network on the spread between cells that produce the effect known as excessive overlapping. The second scenario shows the optimized network, reducing the spread obtaining the optimal overlapping between cells, improving signal quality levels defined by signal to interference ratio Ec/Io. The throughput performance of the network is improved in 13.28% of the areas with speeds above two Mbps. From these results, we conclude that it is important to consider during the planning process or optimization of WCDMA networks the factors above mentioned that affect the performance and quality of service.
Arbuscular and Ectomycorrhizal Fungi Associated with the Invasive Brazilian Pepper Tree (Schinus terebinthifolius) and Two Native Plants in South Florida

The potential role of soil fungi in the invasion of the Brazilian pepper tree (Schinus terebinthifolius—BP) in Florida is not known; although the low biotic resistance of Florida soils is often invoked to explain the prevalence of many invasive species. To gain an initial insight into BP's mycorrhizal associations, this study examined the rhizobiome of BP and two native plants (Hamelia patens and Bidens alba) across six locations. Arbuscular mycorrhizal fungi (AMF) associated with the roots of the target plants and bulk soil was characterized by spore morphotyping. Sequence analysis of metagenomic DNA from lateral roots/rhizosphere of BP (n = 52) and a native shrub H. patens (n = 37) on the same parcel yielded other fungal associates. Overall, the total population of AMF associated with BP was about two folds greater than that of the two native plants (p = 0.0001) growing on the same site. The dominant AMF under Schinus were members of the common Glomus and Rhizophagus spp. By contrast, the most prevalent AMF in the bulk soil and rhizosphere of the two Florida native plants, Acaulospora spp (29%) was sharply diminished (9%) under BP rhizosphere. Analysis of the ITS2 sequences also showed that Schinus rhizosphere had a high relative abundance of ectomycorrhizal fungi (76.5%) compared to the native H. patens (2.6%), with the species Lactifluus hygrophoroides (Basidiomycota) being the most prevalent at 61.5% (p < 0.05). Unlike the native plants where pathogenic fungi like Phyllosticta sp. , Phoma sp. , and Neofusicoccum andium were present (8.1% for H. patens), only one potentially pathogenic fungal taxon was detected (3.9%) under BP. The striking disparity in the relative abundance of AMF and other fungal types between BP and the native species is quite significant. Fungal symbionts could aide plant invasion via resource-use efficiency and other poorly defined mechanisms of protection from pathogens in their invaded range. This report exposes a potentially significant but previously unappreciated fungal dimension of a complex invasion system and underscores the need to characterize these fungal symbionts, their role and mode of action during invasion; with the goal of devising measures for invasion control and ecological restoration.
Development of the ‘Attitudes to Health Professionals Questionnaire’ (AHPQ): A measure to assess interprofessional attitudes

This paper describes the development and preliminary validation of a measure to investigate interprofessional attitudes and how these attitudes change over time. Items for the questionnaire were elicited from ‘construct exercises’ with staff from different Health Schools resulting in a 20-item ‘Attitudes to Health Professionals Questionnaire’ (AHPQ). The questionnaire was completed by first year students from five different health professions. Its structure was evaluated using principal components analysis, the internal consistency was determined and the test-retest reliability assessed. Analysis of these data led to rephrasing/ removal of certain items and a revised form of the AHPQ. The revised AHPQ was completed by a different cohort of students and a preliminary validation was carried out. A solution with two main components labelled ‘caring’ and ‘subservient’ emerged from analysis of the structure of the initial AHPQ, the overall internal consistency was good although the test-retest reliability varied. Preliminary validation of the revised questionnaire suggested significant differences, on both scales, in students' attitudes towards different health professions at the outset of their training. The AHPQ appears to be a useful instrument for the assessment of interprofessional attitudes in the health professions.
Sentiment Analysis: An Overview

With the explosive growth of the social media content on the Internet in the past few years, people now express their views on almost anything in discussion. Finding the opinion sites and monitoring them on the web is difficult task. Thus there is a need for automatic opinion discovery and summarization systems. Sentiment Analysis or Opinion Mining is the computational study of opinions, sentiments and emotions expressed in text. This paper describes the field of Sentiment Analysis and its latest developments.
HealthTrust: A Social Network Approach for Retrieving Online Health Videos

Background Social media are becoming mainstream in the health domain. Despite the large volume of accurate and trustworthy health information available on social media platforms, finding good-quality health information can be difficult. Misleading health information can often be popular (eg, antivaccination videos) and therefore highly rated by general search engines. We believe that community wisdom about the quality of health information can be harnessed to help create tools for retrieving good-quality social media content. Objectives To explore approaches for extracting metrics about authoritativeness in online health communities and how these metrics positively correlate with the quality of the content. Methods We designed a metric, called HealthTrust, that estimates the trustworthiness of social media content (eg, blog posts or videos) in a health community. The HealthTrust metric calculates reputation in an online health community based on link analysis. We used the metric to retrieve YouTube videos and channels about diabetes. In two different experiments, health consumers provided 427 ratings of 17 videos and professionals gave 162 ratings of 23 videos. In addition, two professionals reviewed 30 diabetes channels. Results HealthTrust may be used for retrieving online videos on diabetes, since it performed better than YouTube Search in most cases. Overall, of 20 potential channels, HealthTrust’s filtering allowed only 3 bad channels (15%) versus 8 (40%) on the YouTube list. Misleading and graphic videos (eg, featuring amputations) were more commonly found by YouTube Search than by searches based on HealthTrust. However, some videos from trusted sources had low HealthTrust scores, mostly from general health content providers, and therefore not highly connected in the diabetes community. When comparing video ratings from our reviewers, we found that HealthTrust achieved a positive and statistically significant correlation with professionals (Pearson r 10 = .65, P = .02) and a trend toward significance with health consumers (r 7 = .65, P = .06) with videos on hemoglobinA1 c, but it did not perform as well with diabetic foot videos. Conclusions The trust-based metric HealthTrust showed promising results when used to retrieve diabetes content from YouTube. Our research indicates that social network analysis may be used to identify trustworthy social media in health communities.
Channel coding for NOMA schemes with a JD or SIC receiver

In this paper, we investigate the impact of channel coding on two kinds of non-orthogonal multiple access (NOMA) schemes, either with a successive interference cancellation (SIC) receiver or with a joint decoding (JD) receiver. Firstly, the information-theoretic individual achievable signal-to-noise ratio (SNR) regions of SIC and JD are analyzed. Then single-user-oriented (SU) code and multi-users-oriented (MU) code are considered for SIC and JD, and the practical individual achievable SNR regions of SIC and JD with these two kinds of channel codes are obtained, which provides an intuitive way to evaluate system performance under different channel conditions and transmission rates. Simulation results show that, the practical boundaries of individual achievable SNR region of SIC generally lie inside the boundaries of JD, as predicted by the theoretical analysis. Moreover, SU code, which is capacity-approaching over point-to-point channel, performs better than MU code for SIC, while the choice of channel codes for JD depends on transmission rates and channel conditions.
Role of holes and electrons during erase of TANOS memories: Evidences for dipole formation and its impact on reliability

The systematic investigation of the role played by electrons and holes during the erase operation of TANOS memories by means of charge separation experiments and physics-based simulations is reported for the first time. We determined a dominance of electrons back-tunneling in the first part of the transient, and dominance of holes in the second part. Good agreement is reached between experimental and simulated data. In addition we demonstrate for the first time the formation of a vertical charge dipole in TANOS devices, whose polarity depends on the P/E operation sequence. This dipole severely affects the program and erase performances and the retention of mild programmed and erased states, which is a concern especially for multilevel applications.
Herpesvirus saimiri as a model for gammaherpesvirus oncogenesis.

Herpesvirus saimiri (HVS) causes T-lymphoproliferative dis-$borders in several New World and Old World primate species and in certain rabbits.In vitro infection leads to permanent growth of primary T cells of primate and human origins. The transformation-relevant proteins of HVS interact with cellular proto-oncoproteins which results in cell growth transformation. In addition, virus-encoded cellular homologues may contribute to transformation or persistence of HVS by altering cellular signal transduction and deregulating cell growth control. Because of the presence of a permissive cell culture system and in vitro Land in vivo transformation assays, HVS provides a unique opportunity to investigate the mechanisms of cancer induction by oncogenic herpesviruses.
An automatic calibration system for Chinese karaoke lyrics based on high-level fuzzy Petri nets

Karaoke has become one of the most important leisure activities in the modern life. The traditional karaoke systems require lyrics to be filled in manually, which requires a significant amount of time. Therefore, an automatic method is needed to improve this process. In this paper, we use a generative theory of tonal music and high-level fuzzy Petri nets to complete music segmentation and karaoke calibration automatically. The C# programming language is used to implement the system, and Chinese songs are used. Experiments indicate completely progress in high-level fuzzy Petri nets and show that the final precision is better in the karaoke system. The result of this study may be used in the fields of home entertainment or other relevant systems.
Study on the Profit-oriented of Largest Shareholder and Irrational Dividend Pay-out

This paper analyzes irrational dividend pay-out behaviors of listed companies and finds that the common theories in the literature cannot explain these behaviors. The policy guidelines of the CSRC((China) Securities Regulation Committee) cannot fully explain these phenomena,either.Our empirical study shows that the largest shareholders' pursuit of profit maximization is the major factor to influence the irrational dividend pay-out of the listed company under the special background of ownership splitting.Under controlling the share-holding proportion of the largest shareholder,we find that the non-(governmental) holding listed companies have a higher probability of irrational dividend pay-out than that of the government holding ones. The balance power of shareholders and internal supervision mechanism of the company cannot restrict its irrational dividend pay-out behavior.But the debt has an effect on(controlling it).
ECONOMIC ASPECTS OF LIFELONG LEARNING IN LATVIAN REGIONS

despite the extreme urgency of lifelong learning in the era of knowledge economy, employers in Latvia’s regions are not active investors in the training of their employees, and individuals are not eager to actively educate themselves throughout their lives, mentioning the expensiveness of lifelong learning – unlike in the majority of EU Member States – as the key reason. Therefore, one can identify the discrepancy between the political priorities and the actual situation. The author, following the idea of Latvia’s scientist A.Jaunzems to perceive knowledge purely economically – as a product of the education market – developed this idea further by examining the knowledge market in Latvia’s regions in regard to its institutional “casing”, i.e. lifelong learning. The research findings show that the regional specifics of lifelong learning in Latvia are determined by the fact that Latvia’s regions are in different stages of economic development.