Miracle-dz/UniFAR-FTUs huggingface dataset:
A Penta-Band Reject Inside Cut Koch Fractal Hexagonal Monopole UWB MIMO Antenna for Portable Devices

In this paper, a novel compact hexagonal shaped ultra-wideband multiple-input multipleoutput (UWB-MIMO) Koch fractal antenna is designed with penta-band rejection characteristics for portable devices. The antenna rejects the C-band downlink frequency from 3.7–4 GHz, the C-band uplink frequency from 5.75–6.05 GHz and the satellite bands from 7.45 to 8.4 GHz. The band 7.45– 7.55 GHz is used by the meteorological satellite service for the geostationary satellite services. The band 7.75–7.9 GHz is used by the meteorological satellite service for non-geostationary satellite services. The band 8.025–8.4 GHz is used by the Earth exploration satellites for geostationary satellite services. The C-band and satellite bands interfere with the UWB and have been rejected using a band reject filter. A spiral shaped slot is introduced inside the fractal hexagonal monopole to introduce band reject characteristics. The band suppression and widening of the impedance bandwidth are achieved by using defected ground structures. The antenna has wideband impedance matching with S11 < −10 dB in the UWB frequency range from 3.1 to 13.6 GHz and has a low mutual coupling with S21 < −19 dB. The antenna has very low envelope correlation coefficient of less than 0.17 and low capacity loss of 0.254, which proves that the MIMO antenna shows good diversity performance.
Omics Overview of the SPARC Gene in Mesothelioma

The SPARC gene plays multiple roles in extracellular matrix synthesis and cell shaping, associated with tumor cell migration, invasion, and metastasis. The SPARC gene is also involved in the epithelial-mesenchymal transition (EMT) process, which is a critical phenomenon leading to a more aggressive cancer cell phenotype. SPARC gene overexpression has shown to be associated with poor survival in the mesothelioma (MESO) cohort from the TCGA database, indicating that this gene may be a powerful prognostic factor in MESO. Its overexpression is correlated with the immunosuppressive tumor microenvironment. Here, we summarize the omics advances of the SPARC gene, including the summary of SPARC gene expression associated with prognosis in pancancer and MESO, the immunosuppressive microenvironment, and cancer cell stemness. In addition, SPARC might be targeted by microRNAs. Notably, despite the controversial functions on angiogenesis, SPARC may directly or indirectly contribute to tumor angiogenesis in MESO. In conclusion, SPARC is involved in tumor invasion, metastasis, immunosuppression, cancer cell stemness, and tumor angiogenesis, eventually impacting patient survival. Strategies targeting this gene may provide novel therapeutic approaches to the treatment of MESO.
Bird scaring lines reduce seabird mortality in mid-water and bottom trawlers in Argentina

Seabird bycatch in fisheries, and the development of effective mitigation to minimize this, have been subject to increasing research attention over the past three to four decades. Trawl fisheries represent a particular challenge, as bird mortalities (especially highly threatened albatrosses and large petrels, Procellariforms) occur primarily through difficult-to-detect collisions with warp and net monitoring cables. Effectiveness of bird-scaring lines (BSLs) as a mitigation measure can be fleet-specific, and studies relating specifically to reducing collisions with the net monitoring cable are rare. To support improved assessment and mitigation of seabird bycatch in trawl fisheries, we studied the mortality associated with mid-water and bottom factory trawl vessels along the southern tip of the Argentine Patagonian shelf, across 2144 trawls from 2012 to 2019, with three specific objectives: (i) inform improved bycatch management in this (and other) trawl fisheries by analysing differences in seabird collision rates and outcomes between net monitoring and warp cables, as well as the effect of mitigation measures in reducing collisions; (ii) explore the effects of key fishing operation variables on seabird impact outcomes; and (iii) estimate the annual seabird mortality in the study fleet. We tested the efficacy of BSLs as a mitigation measure to reduce seabird mortality, on warps and net monitoring cables. Our results show that seabird mortality increases in the presence of a net monitoring cable. Our estimation of fishery-wide mortality without the use of BSLs includes 108 [31–186] Southern royal albatross (Diomedea epomophora) and 279 [108–465] Black-browed albatross (Thalassarche melanophris) killed annually by the collisions with the net monitoring cable. We demonstrate the efficacy of BSLs in reducing the number of collisions and in combination with no discarding of fishes, seabird interactions fell to c. zero. Our study builds the case for better bycatch data collection in trawl fisheries, the strong influence of discarding, and the feasibility of simple mitigation measures to reduce seabird bycatch, including on the net monitoring cable.
Cross‐scale interdependencies require attention in forest restoration

A governance perspective that connects actors at multiple levels in forest restoration is largely missing and much needed to expedite the translation of national restoration targets into long‐lasting outcomes. An explicit focus on the interactions across governance levels, and how these influence ecological processes at different spatial levels, can overcome the general tendency to focus on forest restoration either from the top‐down or bottom‐up and help improve the quality of forest restoration.
Piezoresistive Elastomer Composites Used for Pressure Sensing

Pressure sensors with capability to detect small physical movements and mechanical deformations have been widely used in wearable and medical applications. However, devices that are commercially available currently require complex designs and fabrication and present only a limited force-range sensitivity. To simplify the design, a thermoplastic polyurethane (TPU)/carbon nanotubes (CNTs) composite film has been developed using a melt extrusion technique followed by compression molding. Pressure sensors were made from these films, whose piezoresistive response has been analyzed as a function of the concentrations of CNTs, around the percolation threshold. The changes in the voltage of the device with applied pressure were continuously measured using a voltage divider system coupled with an electromechanical test machine that dynamically loaded the sensors under compression. The voltage divider system was tuned to obtain the best sensitivity and signal/noise (S /N) ratio for each device tested. The results showed that sensors containing a target of 2.5 wt% CNTs had market leading sensitivity and repeatability during long-term stability testing and showed high durability during underwater testing, indicating that such devices can be used as a promising robust pressure-sensitive sensor in wearable devices.
Fabrication of Poly (Trans-3-(3-Pyridyl)Acrylic Acid)/Multi—Walled Carbon Nanotubes Membrane for Electrochemically Simultaneously Detecting Catechol and Hydroquinone

Herein, conductive polymer membrane with excellent performance was successfully fabricated by integrating carboxylated multi-walled carbon nanotubes (MWCNTs) and poly (trans-3-(3-pyridyl) acrylic acid) (PPAA) film. The drop-casting method was employed to coated MWCNTs on the glassy carbon electrode (GCE) surface, and PPAA was then electropolymerized onto the surface of the MWCNTs/GCE in order to form PPAA-MWCNTs membrane. This enables the verification of the excellent performances of proposed membrane by electrochemically determining catechol (CC) and hydroquinone (HQ) as the model. Cyclic voltammetry experiments showed that the proposed membrane exhibited an obvious electrocatalytic effect on CC and HQ, owing to the synergistic effect of PPAA and MWCNTs. Differential pulse voltammetry was adopted for simultaneous detection purposes, and an increased electrochemical responded to CC and HQ. A concentration increase was found in the range of 1.0 × 10−6 mol/L~1.0 × 10−4 mol/L, and it exhibited a good linear relationship with satisfactory detection limits of 3.17 × 10−7 mol/L for CC and 2.03 × 10−7 mol/L for HQ (S/N = 3). Additionally, this constructed membrane showed good reproducibility and stability. The final electrode was successfully applied to analyze CC and HQ in actual water samples, and it obtained robust recovery for CC with 95.2% and 98.5%, and for HQ with 97.0% and 97.3%. Overall, the constructed membrane can potentially be a good candidate for constructing electrochemical sensors in environmental analysis.
High Response Decoding System of Resolver Considering Signal Errors

Resolvers are commonly utilized as position sensors to gather angular data. The accuracy of resolver-to-digital conversion (RDC) may be hampered by response times and systematic errors in the demodulation and decoding of resolvers, though. A demodulation technique based on a multistage notch filter is proposed for the phase delay caused by employing a low-pass filter (LPF) in the signal demodulation process. This demodulation algorithm can enhance the decoding system’s response capacity while also removing the specified harmonics. An improved double second-order generalized integrator with frequency-locked loop (IDSOGI-FLL) is developed to extract the positive sequence components of the sine and cosine signals of the resolver in order to address the systematic faults present in the resolver. In comparison to traditional DSOGI-FLL, IDSOGI-FLL has the same amplitude and phase error suppression capabilities as DSOGI-FLL, but it makes up for the dc offset error suppression capability that is lacking in DSOGI-FLL. The effectiveness of the strategy is demonstrated by the experimental results.
Top-down and bottom-up stimulation techniques combined with action observation treatment in stroke rehabilitation: a perspective

Stroke is a central nervous system disease that causes structural lesions and functional impairments of the brain, resulting in varying types, and degrees of dysfunction. The bimodal balance-recovery model (interhemispheric competition model and vicariation model) has been proposed as the mechanism of functional recovery after a stroke. We analyzed how combinations of motor observation treatment approaches, transcranial electrical (TES) or magnetic (TMS) stimulation and peripheral electrical (PES) or magnetic (PMS) stimulation techniques can be taken as accessorial physical therapy methods on symptom reduction of stroke patients. We suggest that top-down and bottom-up stimulation techniques combined with action observation treatment synergistically might develop into valuable physical therapy strategies in neurorehabilitation after stroke. We explored how TES or TMS intervention over the contralesional hemisphere or the lesioned hemisphere combined with PES or PMS of the paretic limbs during motor observation followed by action execution have super-additive effects to potentiate the effect of conventional treatment in stroke patients. The proposed paradigm could be an innovative and adjunctive approach to potentiate the effect of conventional rehabilitation treatment, especially for those patients with severe motor deficits.
Sugar Detection in Aqueous Solution Using an SMS Fiber Device

We report on the fabrication and testing of a fiber optics sensor based on multimodal interference effects, which aims at the detection of different types of sweeteners dissolved in water. The device, which has a simple structure, commonly known as the SMS configuration, is built by splicing a segment of commercial-grade, coreless multimode fiber (NC-MMF) between two standard single-mode fibers (SMFs). In this configuration, the evanescent field traveling outside the core of the NC-MMF allows the sensing of the refractive index of the surrounding media, making it possible to detect different levels of sugar concentration. The optical sensor was tested with aqueous solutions of glucose, fructose, and sucrose in the concentration range from 0 wt% to 20 wt% at room temperature. The proposed device exhibits a linear response with a sensitivity of 0.1835 nm/wt% for sucrose, 0.1687 nm/wt% for fructose, and 0.1694 nm/wt% for glucose, respectively, with a sensing resolution of around 0.5 wt%. Finally, we show that, despite having similar concentration behavior, some degree of discrimination between the different sugars can be achieved by assessing their thermo-optical response.
Freeze-thaw resistance with de-icing salts of alkali-activated slag concrete: the influence of activator type and dosage and comparison to the ordinary Portland cement concrete

This paper presents the results of an experimental study of the freeze-thaw resistance with de-icing salts (resistance to scaling) of three slag-based alkali-activated (AA) concrete mixes and the reference OPC concrete mix. The scaling resistance was tested on the samples subjected to the 7, 14, 28, 42 and 56 freezing and thawing cycles with 3% NaCl solution as freezing medium. The results showed that the increased sodium silicate content enhances the scaling resistance of the AA concrete. OPC concrete exhibited much higher scaling resistance up to 42 cycles, after which it showed severe damage, while the scaling of AA concrete mixes became more moderate after 7 cycles of testing.
Study on Adversarial Attacks Techniques, Learning Methods and Countermeasures: Application to Anomaly Detection

: Adversarial attacks on AI systems are designed to exploit vulnerabilities in the AI algorithms that can be used to manipulate the output of the system, resulting in incorrect or harmful behavior. They can take many forms, including manipulating input data, exploiting weaknesses in the AI model, and poisoning the training samples used to develop the AI model. In this paper, we study different types of adversarial attacks, including evasion, poisoning, and inference attacks, and their impact on AI-based systems from different fields. A particular emphasis is placed on cybersecurity applications, such as Intrusion Detection System (IDS) and anomaly detection. We also depict different learning methods that allow us to understand how adversarial attacks work using eXplainable AI (XAI). In addition, we discuss the current state-of-the-art techniques for detecting and defending against adversarial attacks, including adversarial training, input sanitization, and anomaly detection. Furthermore, we present a comprehensive analysis of the effectiveness of different defense mechanisms against different types of adversarial attacks. Overall, this study provides a comprehensive overview of challenges and opportunities in the field of adversarial machine learning, and serves as a valuable resource for researchers, practitioners, and policymakers working on AI security and robustness. An application for anomaly detection, especially malware detection is presented to illustrate several concepts presented in the paper.
Método de estimação da velocidade rotórica de MSIP utilizando esquema combinado Backstepping-Sliding Mode

— This paper presents a method of rotor speed estimation applied to a permanent magnet syn- chronous machines (PMSM) based on a backstepping observer combined with a sliding mode current observer. The backstepping algorithm is developed to observe the stator currents and counter-electromotive force of the machine and is obtained from the machine model in αβ coordinates. A sliding mode current observer is used in a complementary way to the backstepping observer. Based on the information of the two observers, a rotor speed adaptive law is proposed. Simulation results are presented to demonstrate the performance of the proposed sensorless control system. dois ob- servadores uma lei de adaptação da velociadde rotórica é proposta. Resultados de simulação são apresentados para demonstrar o desempenho do sistema de controle sensorless proposto. Palavras-chave— Observador Backstepping , Observador Sliding Mode , Máquina Síncrona de Imãs Perma- nentes e Controle Vetorial.
How to move towards One Health surveillance? A qualitative study exploring the factors influencing collaborations between antimicrobial resistance surveillance programmes in France

Introduction Antimicrobial resistance (AMR) is a major public health issue, against which international organisations and governmental bodies call for integration between surveillance programmes involved in human, animal, and environmental sectors. Collaborations are the primary feature of integration and deserve to be supported. However, little is known about the factors that can foster collaborations between surveillance programmes. This study aimed to provide a better understanding of the factors for setting-up collaborations between AMR surveillance programmes in France. Methods We performed a qualitative study based on 36 semi-structured interviews with programmes’ coordinators and 15 with key-informant experts involved in AMR surveillance. Results The implementation of collaboration between sectors was multifactorial: we identified 42 factors grouped into six categories (i.e., characteristics of the overall AMR surveillance system, features of the collaborating programme, profile of the actors involved, characteristics of the collaboration itself, broader context, and AMR research activities). Collaborations were mainly fostered by good interpersonal relationship between actors, their interest in transdisciplinary approaches and the benefits of collaboration on the programmes involved. Limited resources and the complexity of the AMR surveillance system hindered collaboration. Paradoxically, coordinators generally did not perceive collaborations as a resource-pooling tool since they generally set them up only after consolidating their own programme. Discussion Since most factors identified were not specific to AMR, these results can be useful for other collaborative surveillance system. Ultimately, they provide a better understanding of stakeholders’ motivations and influences driving collaboration, and can help researchers and risk managers promoting a One Health approach against public health threats.
Optimized recess etching criteria for T‐gate fabrication achieving ft= 290 GHz at Lg= 124 nm in metamorphic HEMT with In0.7Ga0.3As channel

We propose criteria for recess etching to fabricate T-gate used in InGaAs HEMTs. By patterning additional rectangular pads on the source and drain metals in the e-beam lithography step, it is possible to measure the drain-to-source resistance ( R ds ) and current ( I ds ). the ratio ( Γ ) of before and after etching for each R ds and I ds can be used as criteria to determine the point in time to stop etching. By performing recess etching with Γ = 1.97 for R ds and Γ = 0.38 for I ds on an epiwafer having cap doping concentration of 2= 10 19 cm -3 and channel indium content of 0.7, we have fabricated InGaAs mHEMT device showing g m,max = 1603 mS/mm and f t = 290 GHz at L g = 124 nm. The criteria presented can be applied to InGaAs HEMTs with various epitaxial structures.
Facilitating professional normative judgement through science-policy interfaces: the case of anthropogenic land subsidence in the Netherlands

ABSTRACT Science-policy interactions can both facilitate and hamper professional normative judgement, i.e. a value judgement about the desirability of a certain situation. Anthropogenic land subsidence, contributing to relative sea-level rise in the economically important Western peatland areas in the Netherlands is a case in point. The implementation of mitigation, adaptation and compensation measures is lagging, partly due to science-policy interaction problems potentially leading to conflicts between stakeholders, including agrarians, climate scientists and inhabitants. We find that professional normative judgement is enhanced when researchers and societal stakeholders reflect more critically on their role and engage in more inclusive science-policy interactions.
Which Functions are Fractionally Differentiable

s of MMA2015, May 26–29, 2015, Sigulda, Latvia c © 2015 WHICH FUNCTIONS ARE FRACTIONALLY DIFFERENTIABLE? G. VAINIKKO Institute of Mathematics, University of Tartu Liivi 2, Tartu 50409, Estonia E-mail: gennadi.vainikko@ut.ee We define a fractional differentiation operator as the inverse to Riemann-Liouville integral operator, and examine the relations of this most natural concept with more popular fractional differentiation operators of Riemann-Liouville and Caputo. Our main result concerns the description of the range of Riemann-Liouville integral operator in the space of continuous functions. As the result we can describe, in particular, the class of functions that are differentiable in the sense of Riemann-Liouville and Caputo. Also the Abel equation with coefficient function of two variables can be examined on the basis of Riemann-Liouville’s operator inversion.
Numerical Simulations of Fluid Flow and Heat Transfer through Aluminum and Copper Metal Foam Heat Exchanger – A Comparative Study

Abstract This article discusses about a numerical simulation of a metal foam heat exchanger system carried out by a commercial software. A metal foam layer is attached to the bottom of the heat exchanger to absorb heat from the exhaust hot gas leaving the system. Two types of metal foams with two different pores per inch (PPI) values are considered for heat transfer enhancement. Similarly, two different materials Aluminum and copper, that poses high thermal conductivity, metal foams are considered for the present numerical simulations. The heat exchanger system is simulated over a range of 6–30 m/s fluid velocity. The proposed simulations are compared with theoretical and experimental data available in the literature. The goal is to improve the thermal performance of the heat exchanger by decreasing the pressure drop and maximizing the heat transfer rate. Finally, it has been noticed that the velocity of the fluid decreases as PPI increases at the expense of its pressure drop. The copper metal foam gives a maximum increase of 4–10% heat transfer rate compared to aluminum metal foams for a fluid velocity of 30 m/s.
Down syndrome or Rett syndrome in the family: Parental reflections on sibling experience

ABSTRACT Background Siblings of children with intellectual disability have unique family experiences, varying by type of disability. Methods Parents of children with Down syndrome (156) or with Rett syndrome (149) completed questionnaires relating to sibling advantages and disadvantages, experiences of holidays and recreation, and perceived availability of parental time. Qualitative responses were analysed using thematic analysis. Results Positive personality traits, an optimistic outlook, enhanced skills, and rich relationships were strong and consistent parental perceptions for siblings in both disability groups. Parents of children with Rett syndrome were more likely to rank themselves lower on time availability, and to report sibling difficulties with social engagement and family holidays. Conclusions Parental responses appeared to be influenced by disability type, and reflective of child capabilities. Perceptions of sibling experience should be supplemented by data collected directly from siblings to fully understand their unique perspective, and the ways in which their experiences could be enhanced.