Miracle-dz/UniFAR-FTUs huggingface dataset:
Characteristics of a 4-phase Segment Type Switched Reluctance Motor

A novel segment type switched reluctance motor (SRM) as a rare-earth-less motor is proposed. The torque was increased by 40% and the radial force was decreased by 76% compared with the same size usual variable reluctance (VR) type SRM. Increasing the average torque, however, caused increasing torque ripple. In this paper we develop a 4-phase segment type SRM and show that the torque ripple can be decreased well.
The W-band data collection experiment of the DAVID mission

The data collection experiment (DCE) of the scientific mission DAVID (DAta and Video Interactive Distribution) of the Italian Space Agency (ASI) will pioneer the use of the W-band for telecommunications experiments. In particular the collection of high volumes of data from remote or virtually remote sites will be achieved through the exploitation of a W-band link in a time window of a few minutes per satellite pass. The experiment will hence demonstrate the capability of the W-band channel to be used reliably for a telecommunication link. At the same time, the experiment will provide useful elements for the characterisation of the W-band channel, in order to be able to design properly future operational systems working at W-band.
Improvements in teleoperated Fitts task performance using sensor-assisted variable-velocity mapping

Inadequacies in sensor and image processing technology have limited the capabilities of autonomous robotics in complex environments. However, the tedium and fatigue commonly encountered in manual teleoperation has prompted research in the area of sensor and computer assisted teleoperation. A previously introduced method of sensor assisted teleoperation, consisting of automatic selection of variable velocity mapping to the execution of Fitts task is described, and the theoretically predicted increase in performance compared with the actual increases shown. The experimental results are used to support a method of choosing mapping parameters to provide the optical assistance when there are known inaccuracies in the available sensor data according to the initially described concept.
Immunological and Clinical Impact of DAA-Mediated HCV Eradication in a Cohort of HIV/HCV Coinfected Patients: Monocentric Italian Experience

HCV treatment became available for all infected patients regardless of their comorbidities, especially for HIV coinfected subjects, leading to an improvement in both clinical and immunological conditions. We retrospectively analyzed a cohort of HIV/HCV coinfected patients treated with DAA therapies; data regarding epidemiological, viral-immunological, and hepatic parameters before and after DAA administration have been collected. Drug-drug interactions between DAA and both antiretroviral therapy and non-ART-drugs were also evaluated; the study showed the efficacy of DAA schedules in HCV eradication also for HIV/HCV patients with multiple comorbidities and assuming many different drugs. Principal issues are still represented by drug interactions, pill burden, and patients’ compliance. These concerns have to be taken into account, especially in HIV patients for whom the immunological state and ART interactions should always be considered.
High‐dose non‐sedating antihistamines are used insufficiently in chronic urticaria patients treated with omalizumab

Abstract Background The lifetime prevalence of chronic urticaria (CU) is 0.5%–1%. In some patients with CU, symptomatic control is not achieved with non‐sedating second‐generation H1 antihistamines (nsAH1) alone, even with quadrupled standard doses as recommended in international guidelines. In these cases, biological treatment with omalizumab can be added. Since omalizumab is expensive compared to antihistamines, lack of adherence to guidelines for high dose nsAH1 (up to four‐fold standard dose per day) may be associated with substantial unnecessary costs. The aim was to measure the use nsAH1 before and during omalizumab use for the first time in an omalizumab treated CU population. Methods We identified all Danish patients with CU who initiated omalizumab from March 2014 to December 2018 and evaluated new and ongoing nsAH1 treatments using the Danish nationwide registries. Results A total of 955 CU patients initiated treatment with omalizumab within the study period (median age 40 years [IQR 28–50], 74.5% females). During the 12 months prior to omalizumab initiation, 95.6% of the patients filled at least one prescription with nsAH1 at some point, while 84.7% filled at least one prescription during the three months before omalizumab. From 3 months before omalizumab initiation till 3 months after, the proportions of users of high‐dose nsAH1 was maximum 31.1%. Conclusions Omalizumab was usually administered before sufficient nsAH1 treatment was tried. In despite of the labelling that omalizumab should be co‐administered with high dose nsAH1, this does not happen This may lead to substantial unnecessary costs.
Design of photonic crystal fibers for dispersion-related applications

A general procedure for design of photonic crystal fibers (PCFs) with desirable dispersion properties is presented. The design model is based on the combination of a rigorous vector mode solver and a scaling transformation for the dispersion properties of the PCFs. In comparison with the conventional design method, the new design procedure is more efficient and can be readily automated for the purpose of design optimization. Several applications of the design procedure, e.g., the design optimization for dispersion shifted fibers, dispersion flattened fibers, and dispersion compensation fibers, are demonstrated and discussed.
VANTAGEM COMPETITIVA BASEADA EM OPERAÇÕES EM EMPRESAS DE SETORES TRADICIONAIS DA INDÚSTRIA DE TRANSFORMAÇÃO / OPERATIONS-BASED COMPETITIVE ADVANTAGE IN COMPANIES IN TRADITIONAL SECTORS OF THE TRANSFORMATION INDUSTRY

Esse artigo tem como objetivo geral avaliar as fontes de obtencao de vantagem competitiva de empresas de setores industriais tradicionais. Trata-se de um estudo de casos multiplos interpretativo, realizado em tres setores da industria de transformacao, totalizando seis empresas. Utilizou-se o metodo das comparacoes constantes para a analise dos dados, que foram coletados com uso de roteiro semiestruturado, por meio de entrevistas em profundidade. Em linhas gerais, as empresas pesquisadas possuem fontes complementares de obtencao de vantagem competitiva, destacando-se o relacionamento com os fornecedores, a capacidade de inovacao e a escala de producao. Assim sendo, entende-se que nos setores pesquisados a funcao operacoes constitui uma arma competitiva, tendo em vista que as empresas desses setores possuem fontes de vantagem competitiva que podem ser associadas a competencias operacionais, logo, possuem vantagem competitiva baseada em operacoes. Palavras-chave: Vantagem Competitiva. Estrategia de Operacoes. Competencias Operacionais. Abstract This paper evaluates the sources of competitive advantage in companies in traditional industrial sectors. It is na interpretive multiple case study conducted in three sectors of the manufacturing industry. It uses the method of continual comparisons to analyze the data, which were gathered using a semi-structured script, with in-depth interviews. In general, the surveyed companies have complementary sources of competitive advantage, especially the relationship with suppliers, innovation capacity and scale of production. Therefore, it is understood that in the sectors surveyed, the operations function is a competitive weapon, given that companies in these sectors have sources of competitive advantage that can be associated with operational capabilities, giving them an operations-based competitive advantage. Keywords: Competitive Advantage. Operations Strategy. Operational Capabilities.
Electronically tunable band-stop filter

The design procedures for an electronically tuned band-stop filter are presented. A technique for realizing tunable band-stop filters with coupled lines is discussed. The physical design and electrical performance of a five-section band-stop filter tunable from 6.5 GHz to 10 GHz, with a constant bandwidth, is given. The circuit required to drive the band-stop filter and the calibration procedures are described. <<ETX>>
Efeitos das Práticas Meditativas nos Níveis de Cortisol Induzidos por Estresse Agudo: uma revisão sistemática

As práticas meditativas são reconhecidas pelo potencial na redução do estresse. Estas possuem ampla variedade de técnicas e estilos e quando inseridas na multidisciplinariedade do campo do estresse, sua linha de pesquisa adquire características metodológicas peculiares com diversificação investigativa. Neste contexto, esta revisão sistemática qualitativa tem como objetivo revisar os principais aspectos metodológicos das pesquisas que investigaram o potencial da meditação na regulação do cortisol induzido por tarefas de reatividade de estresse agudo, bem como as características das práticas meditativas utilizadas que, segundo autores, são diferenciais no manejo do estresse e considerados relevantes a esta linha de pesquisa. A pesquisa foi realizada nas plataformas PubMed e Web of Science. Foram incluídos sete estudos originais que utilizaram uma tarefa de reatividade ao estresse agudo e o cortisol como o principal marcador biológico. As intervenções com ênfase em habilidades cognitivas sociais e regulação emocional tiveram melhores resultados na redução do cortisol do que as práticas somente focadas no desenvolvimento cognitivo. Na discussão, foram destacados aspectos como tempo de prática, o aprimoramento de competências e a regulação emocional. Esta revisão contribui para elucidar os mecanismos psicológicos subjacentes às práticas meditativas tal como os aspectos metodológicos relevantes.
5G SECURITY THREATS AFFECTING DIGITAL ECONOMY AND THEIR COUNTERMEASURES

The 5G (fifth generation) network will provide a wide range of connectivity to share information and data with a low latency rate, higher bandwidth and more frequency spectrum to increase speed. Massive Internet of Things (IoT) devices' security is critical to secure communication between different devices. 5G wireless communication offers new services and frameworks, but it is also amplifying security impacts. However, there are a lot of challenges to users' privacy as well. This report provides an overall view of threats and challenges in 5G networks and presents solutions to these challenges. In addition, 5G is being used to increase communication security while providing essential building blocks for physical layer security.
Machine Learning Based Color Classification by Means of Visually Evoked Potentials

Visually evoked potentials (VEPs) are widely used for diagnoses of different neurological diseases. Interestingly, there is limited research about the impact of the stimulus color onto the evoked response. Therefore, in our study we investigated the possibility of automatically classifying the stimulus color. The visual stimuli were selected to be red/black and green/black checkerboard patterns with equal light density. Both of these stimuli were presented in a random manner to nine subjects, while the electroencephalogram was recorded at the occipital lobe. After pre-processing and aligning the evoked potentials, an artificial neural network with one hidden layer was used to investigate the general possibility to automatically classify the stimulus color in three different settings. First, color classification with individually trained models, color classification with a common model, and color classification for each individual volunteer with a model trained on the data of the remaining subjects. With an average accuracy (ACC) of 0.83, the best results were achieved for the individually trained model. Also, the second (mean ACC = 0.76) and third experiments (mean ACC = 0.71) indicated a reasonable predictive accuracy across all subjects. Consequently, machine learning tools are able to appropriately classify stimuli colors based on VEPs. Although further studies are needed to improve the classification performance of our approach, this opens new fields of applications for VEPs.
Guidance and Control of Unmanned, Untethered Submersible for Rendezvous and Docking with Underwater Station

This paper proposes a new concept of underwater unmanned survey system consisting of a mother ship, a launcher, an underwater station(UUS) and a group of unmanned, untethered submersibles (UROVs) t o perform autonomously distributed missions in massive, f a s t and precise manners. Especially, UUS has the autonomous missions of docking with UROVs, charging of those battcries, exchange of informations and watch of UROVs. A new type of UROV recently proposed by one of the authors is employed in this concept t o perform a s table oceanographic underwater investigation on a prearranged course. Control configured vehicle (CCV) techonology is adopted t o perform the swimming at t i tude control. Fuzzy algorithm is applied t o guidance of UROV on a prrearranged course t o reason the collision risk against sea bed and forward obstacles, and t o determine control magnitudes o f CCV modes. A s one of feasibility studies of the proposed underwater unmanned survey system, the guidance of UROV fo r rendezvous and docking with UUS, consisting of rough one t o the neighborhood of UUS, and precise one t o the entrance of UUS is numerically simulated taking the effect of t idal current into account.
Three-dimensional morphological and biomechanical analysis of temporomandibular joint in mandibular and bi-maxillary osteotomies

Abstract Orthognathic surgery is a typical approach for treating maxillofacial deformities. However, orthognathic surgery results in positional changes in the condyles. In a previous review, the effects of orthognathic surgery on temporomandibular joints (TMJs) are not provided. Hence, in this study, we investigate the morphological changes in TMJs after mandibular and bi-maxillary osteotomies. The relationship between the morphological parameters of TMJs and symptoms of temporomandibular disorders (TMDs) is discussed. Finite element contact stress analysis is performed, and the results show that the two abovementioned surgeries can improve maxillofacial deformities, although the positions of the condyles are changed. Moreover, preoperative stress asymmetry of the left and right TMJs is observed, which remain after the surgeries. TMD patient-specific analysis shows that three joint spaces (medial joint space, lateral joint space, superior joint space) are significantly correlated with TMD symptoms.
The smoothing objective penalty function method for two-cardinality sparse constrained optimization problems

The two-cardinality sparse constrained optimization problems include sparse optimization problems and constrained sparse optimization problems in many fields, such as signal processing, image processing, securities investment etc. A smoothing penalty function method and a smoothing objective penalty function method are studied for two-cardinality sparse constrained optimization problems respectively. Some error estimations are proved for the smoothing penalty function and the smoothing objective penalty function. Based on the smoothing penalty function and smoothing objective penalty function, two algorithms are designed to solve two-cardinality sparse constrained optimization problems and their convergence is proved respectively. Numerical results show that the two algorithms have the similar effectiveness in finding out an approximate solution for two-cardinality sparse constrained optimization problems.
Position estimation and control of SMA actuators based on electrical resistance measurement

As a functional material, shape memory alloy (SMA) has attracted much attention and research effort to explore its unique properties and its applications in the past few decades. Some of its properties, in particular the electrical resistance (ER) based self-sensing property of SMA, have not been fully studied. Electrical resistance of an SMA wire varies during its phase transformation. This variation is an inherent property of the SMA wire, although it is highly nonlinear with hysteresis. The relationship between the displacement and the electrical resistance of an SMA wire is deterministic and repeatable to some degree, therefore enabling the self-sensing ability of the SMA. The potential of this self-sensing ability has not received sufficient exploration so far, and even the previous studies in literature lack generality. This paper concerns the utilization of the self-sensing property of a spring-biased Nickel-Titanium (Nitinol) SMA actuator for two applications: ER feedback position control of an SMA actuator without a position sensor, and estimation of the opening of a SMA actuated valve. The use of the self-sensing property eliminates the need for a position sensor, therefore reducing the cost and size of an SMA actuator assembly. Two experimental apparatuses are fabricated to facilitate the two proposed applications, respectively. Based on open-loop testing results, the curve fitting technique is used to represent the nonlinear relationships between the displacement and the electrical resistance of the two SMA wire actuators. Using the mathematical models of the two SMA actuators, respectively, a proportional plus derivative controller is designed for control of the SMA wire actuator using only electrical resistance feedback. Consequently, the opening of the SMA actuated valve can be estimated without using an extra sensor.
Virtual tryvertising. Marketing strategies for empowered customers

The aim of this study is to look at the experiential marketing strategy of virtual tryvertising, by analysing a specific case study: the augmented reality application Ikea Place. It provides customers with a set of tools to prefigure a virtual representation of a piece of a furniture within a physical space, in order to appraise its fitness in a prior time to its actual purchase, and hence to provide a benefit for him/her. The semiotic analysis will be carried out by taking into account the use practices prescribed by the application and the promotional discourses of the company. In particular it will look at two advertising videos which accompanied the launch of the application in 2013 and 2017. It will also consider the added value and the experiential gain for users that the adoption of this type of technology entails, in order to understand AR media not only as a mere strategy for commercial purposes, but as a tool for empowering the users’ appraising skills traditionally used in the context of a dressing room of a physical store.
Development and external validation of a prognostic nomogram for patients with gastric cancer after radical gastrectomy

Background Gastric cancer (GC) is one of the most malignant diseases and threatens the health of individuals across the globe. Hitherto, the identification of prognosis risk stratification on GC has mainly depended on the TNM staging, but owing to its inaccuracy and incompleteness, the prognostic value it offers remains controversial in the current clinical setting. Thus, an effective prognostic model for GC after radical gastrectomy is still needed. Methods Patients with pathologically confirmed GC who underwent radical gastrectomy from 2 different centers were retrospectively enrolled into a training and the validation cohort, respectively. The least absolute shrinkage and selection operator (LASSO) algorithm was applied to select variables among multiple factors, including clinical characteristics, pathological parameters, and surgery- and treatment-related indicators. The multivariate Cox regression method was used to establish the model to predict 1-, 2-, and 3-year survival. Both internal and external validations of the nomogram were then completed in terms of discrimination, calibration, and clinical utility. Finally, prognostic risk stratification of GC was conducted with X-tile software. Results A total of 1,424 patients with GC were eligible in this study, including 1,010 in the training cohort and 414 in the validation cohort. Seven indicators were selected by LASSO to develop the nomogram, including the number of positive lymph nodes, tumor size, adjacent organ invasion, vascular invasion, the level of carbohydrate antigen 125 (CA 125), depth of invasion, and human epidermal growth factor receptor 2 (HER2) status. The nomogram demonstrated a robust predictive capacity with favorable accuracy, discrimination, and clinical utility both in the internal and external validations. Moreover, we divided the population into 3 risk groups of survival according to the cutoff points generated by X-tile, and in this way, the nomogram was further improved into a risk-stratified prognosis model. Conclusions We have developed a prognostic risk stratification nomogram for GC patients after radical gastrectomy with 7 available indicators that may guide clinical practice and help facilitate tailored decision-making, thus avoiding overtreatment or undertreatment and improving communication between clinicians and patients.
Systematic Literature Review of The Effects Of Clinical Mentoring On New Graduate Registered Nurses’ Clinical Performance, Job Satisfaction And Job Retention

Objective: The purpose of this systematic literature review is to appraise contemporary research literature examining the effects of mentoring on graduate registered nurses’ transition to practice objectively and systematically. These areas, specifically examined, are competence, job satisfaction, and retention. Three themes emerged from the research in this area. The themes are informal mentoring effectiveness, the extent of mentoring, and mentoring efficacy. Methods: The PRISMA method was implemented. Articles reviewed were written in English and published between December 2015 and December 2020 and obtained from the Griffith University Library electronic catalogue. A quality assessment of each record not excluded in the title and abstract analysis was undertaken using the method described by Kmet. [1] Those with a quality rating of 16 as a minimum are included in this systematic literature review. Results: Three quantitative, two qualitative and two - method research studies emerged after applying inclusion criteria, selection, and quality assessment. The analysis demonstrated the positive effects of mentoring on all three avenues with one mixed-method study that documented a downward trend in job satisfaction at six months. Conclusions: Mentoring is an effective transition to practice strategy for novice nurses. It affects competence, job satisfaction and retention positively. Retention and resignation rates worsen following 12 months of employment. Robust and rigorous studies are essential to justify long-term mentoring programs’ cost-effectiveness.