Miracle-dz/UniFAR-FTUs huggingface dataset:
Existence and asymptotic behavior of non-normal conformal metrics on ℝ4 with sign-changing Q-curvature

We consider the following prescribed $Q$-curvature problem \begin{equation}\label{uno} \begin{cases} \Delta^2 u=(1-|x|^p)e^{4u}, \quad\text{on}\,\,\mathbb{R}^4\\ \Lambda:=\int_{\mathbb{R}^4}(1-|x|^p)e^{4u}dx<\infty. \end{cases} \end{equation} We show that for every polynomial $P$ of degree 2 such that $\lim\limits_{|x|\to+\infty}P=-\infty$, and for every $\Lambda\in(0,\Lambda_\mathrm{sph})$, there exists at least one solution which assume the form $u=w+P$, where $w$ behaves logarithmically at infinity. Conversely, we prove that all solutions have the form $v+P$, where $$v(x)=\frac{1}{8\pi^2}\int\limits_{\mathbb{R}^4}\log\left(\frac{|y|}{|x-y|}\right)(1-|y|^p)e^{4u}dy$$ and $P$ is a polynomial of degree at most 2 bounded from above. Moreover, if $u$ is a solution to the previous problem, it has the following asymptotic behavior $$u(x)=-\frac{\Lambda}{8\pi^2}\log|x|+P+o(\log|x|),\quad\text{as}\,\,|x|\to+\infty. $$ As a consequence, we give a geometric characterization of solutions in terms of the scalar curvature at infinity of the associated conformal metric $e^{2u}|dx|^2$.
Perturbative no-hair property of form fields for higher dimensional static black holes

In this paper we examine the static perturbation of $p$-form field strengths around higher dimensional Schwarzschild spacetimes. As a result, we can see that the static perturbations do not exist when $p\ensuremath{\ge}3$. This result supports the no-hair properties of $p$-form fields. However, this does not exclude the presence of the black objects having nonspherical topology.
PLL-Less Active and Reactive Power Controller For Three-Phase Grid-Connected Power Converters

Decoupled active and reactive power controllability is one of the important requirements for grid-connected power converters. The majority of traditional power control methods are based on synchronous reference frame transformation with a Phase-Locked Loop (PLL) to estimate the phase angle. This creates additional drawbacks to the system and makes the control process complicated. In this paper, a PLL-less three-phase grid-connected converter is controlled with Proportional-Resonant (PR) current controllers in the stationary reference frame. Compared with traditional power control methods for three-phase grid-connected power converters, the proposed control scheme has higher reliability and is robust under different distorted power grid conditions. Since the controller is implemented in the stationary reference frame, the control algorithm has a simpler structure. Both simulation and experimental results verify the performance of the proposed controller.
Robotic Versus Conventional or Endoscopic-assisted Nipple-sparing Mastectomy and Immediate Prosthesis Breast Reconstruction in the Management of Breast Cancer

Objective: To compare the clinical and patient-reported outcomes of minimal access and conventional nipple-sparing mastectomy (C-NSM). The secondary outcomes investigated included medical costs and oncological safety. Background: Minimal-access NSM has been increasingly applied in the treatment of patients with breast cancer. However, prospective multicenter trials comparing robotic-assisted NSM (R-NSM) versus C-NSM or endoscopic-assisted NSM (E-NSM) are lacking. Methods: A prospectively designed 3-arm multicenter, nonrandomized trial (NCT04037852) was conducted from October 1, 2019 to December 31, 2021, to compare R-NSM with C-NSM or E-NSM. Results: A total of 73 R-NSM, 74 C-NSM, and 84 E-NSM procedures were enrolled. The median wound length and operation time of C-NSM was (9 cm, 175 minutes), (4 cm, and 195 minutes) in R-NSM, and (4 cm and 222 minutes) in E-NSM. Complications were comparable among the groups. Better wound healing was observed in the minimal-access NSM group. The R-NSM procedure was 4000 and 2600 United States Dollars more expensive than C-NSM and E-NSM, respectively. Wound/scar and postoperative acute pain evaluation favored the use of minimal access NSM over C-NSM. Quality of life in terms of chronic breast/chest pain, mobility, and range of motion of the upper extremity showed no significant differences. The preliminary oncologic results showed no differences among the 3 groups. Conclusions: R-NSM or E-NSM is a safe alternative if compared with C-NSM in terms of perioperative morbidities, especially with better wound healing. The advantage of minimal access groups was higher wound-related satisfaction. Higher costs remain one of the major limiting factors in the widespread adoption of R-NSM.
Simulation and Measurement of on-body and off-body Communication Propagation Channels by using dual-band Magnetic Antenna Textile

Evolution of Wireless Body Area Network (WBAN) in telemedicine field keep increased along with needs and enhancement of services, nevertheless an efficient and effective form of communication becomes essential for any type of wireless communication network. One of the most important parameter for designing communication network is path loss exponent. Based on that, the purpose of this research is to know the propagation characteristics for on-body and off-body communication by comparing the simulation and measurement using magnetic textile antenna at 2.45 GHz and 924 MHz with distance variation in LOS and NLOS conditions. In this research, friis formula is used to get the path loss exponent value that shows the characteristics of propagation. The calculation of path loss exponent value for simulation and measurement for on-body communication with LOS and NLOS conditions are between 1.7-1.9 while off-body with LOS and NLOS conditions are between 2.1-5.2. These results show that the body affects path loss exponents value and have own characteristics.
Yōkobo: A Robot to Strengthen Links Amongst Users with Non-Verbal Behaviours

Yōkobo is a robject; it was designed using the principle of slow technology and it aims to strengthen the bond between members (e.g., a couple). It greets people at the entrance and mirrors their interactions and the environment around them. It was constructed by applying the notions of a human–robot–human interaction. Created by joint work between designers and engineers, the form factor (semi-abstract) and the behaviours (nonverbal) were iteratively formed from the early stage of the design process. Integrated into the smart home, Yōkobo uses expressive motion as a communication medium. Yōkobo was tested in our office to evaluate its technical robustness and motion perception ahead of future long-term experiments with the target population. The results show that Yōkobo can sustain long-term interaction and serve as a welcoming partner.
Face alignment by learning from small real datasets and large synthetic datasets

In recent years, face-related research had a wide variety of real-life applications. However, issues such as privacy violations and data abuse caused by its applications have also triggered global controversy. It is undeniable that face-related technology is efficient and convenient, but the dangers and risks are hidden by face technology should be comprehensively considered. Current face algorithms are still challenging in complex and challenging environments (e.g., large angles or expressions). Firstly the existing public training datasets are mostly frontal faces, which have an unbalanced distribution of challenging data. Secondly, the collected real datasets require explicit user consent, and the annotation process is time-consuming and expensive. In this paper, we open a new research direction through synthetic datasets. We try to use synthetic datasets to reduce the dependence of the model on the real-world data set. The face alignment experiments explore the synthetic dataset's complementarity and availability.
Multiport DC–DC Converter With Integrated Cascaded Structure for Optimizing Centralized Battery Equalization System

Existing centralized equalization methods can only equalize one battery cell at a time, which is the main reason that limits the equalization speed and practicability of such methods. To overcome this limitation, this article proposes an integrated cascaded multiport converter (ICMPC) to optimize the structure and performance of the centralized equalization system. Through the proposed converter, the simultaneous and single-stage energy exchange between multiple unbalanced cells and the battery string can be achieved, so as to effectively improve the equalization speed. Meanwhile, the number of ports of the ICMPC is easy to expand, and the optimized system possesses the advantages of compact structure, high efficiency, and high cost effectiveness compared with conventional methods. As the basic and typical form of the ICMPC, the integrated cascade three-port converter is analyzed as an example in terms of operation principle, parameter design, and zero-voltage switching analysis. Finally, to confirm the theoretical analysis, a laboratory prototype is designed, and a comprehensive comparison is performed. The experimental and comparative results fully prove the practicality and superiority of the proposed ICMPC-based centralized equalization.
Electrical discharges in the atmosphere of Venus

A preliminary analysis is reported of some results obtained by recording electrical activity in the Venus atmosphere on the Venera 11 and 12 descent probes. The low-frequency electromagnetic radiation of the Venus atmosphere, here detected for the first time, is evidently produced by electrical discharges at 50--70 km height in the cloud layer. The energy of the discharges is comparable with that released in terrestrial lightning. One thunderstorm area extended about 150 km laterally and 2 km vertically. Discharges may occur at a rate of 20 sec/sup -1/ or more, far faster than on the earth. At the time of observation, the electrical activity on Venus was local, not global, in character.
Influence of Low Intensity Aerobic Exercise Training on the Vo2 Max in 11 to 14 Years School Girls in Hyderabad District

Exercise training with varying intensity increases maximal oxygen intake (VO2max), a strong predictor of cardiovascular and all-cause mortality. Purpose: The aim of this study was to find out the influence of low intensity aerobic training on the vo2 max in 11 to 14 years school girls in Hyderabad district. Methodology: The research scholar has randomly selected thirty (N=30) high school girls were selected as subjects and their age ranged between 11 to 14 years. The subjects were divided into two equal groups, each group consist of 15 total 30. Group one acted as experimental group (EG) and group two acted as control group (CG). The dependent variable vo2 max was selected and it is measured by manual test. Statistical Tool: The statistical tool paired sample „t‟ test was used for analysing of the data and the obtained „t‟ ratio was tested for significance at 0.05 level of confidence. Results: The analysis of the data revealed that there was a significant improvement on vo2 max by the application of low intensity aerobic.
Syntactic aspects of topic and comment

The book focuses on the syntactic behavior of argument noun phrases depending on their discourse status. The main language of consideration is German, but it is shown that the observations can be carried over to other languages. The claim is that discourse-new arguments remain inside the VP where they are base generated. The hierarchy of argument projection is claimed to be fix within and across languages. With the major attention to direct objects it is then argued that discourse-old, here called topical noun phrases undergo raising to agreement projections. This movement can be realized differently: scrambling, object agreement, clitic-doubling, differences in morphological case and stress pattern turn out to be analyzable as one underlying phenomenon. It is furthermore shown that many so-called subject:object asymmetries boil down to topic:non-topic differences, for example with respect to extraction. Thus, irrespectively of the argumental status discourse-new constituents do not act as barriers whereas topical arguments create (weak) islands.
Quantitative aspects of L-type calcium currents

Calcium currents in neurons and muscle cells have been classified as being one of 5 types of which four, L, N, P/Q and R were said to be high threshold and one, T, was designated low threshold. This review focuses on quantitative aspects of L-type currents. L-type channels are now distinguished according to their structure as one of four main subtypes 1.1-1.4. L-type calcium currents play many fundamental roles in cellular dynamical processes including pacemaking in neurons and cardiac cells, the activation of transcription factors involved in synaptic plasticity and in immune cells. The half-activation potentials of L-type currents have been ascribed values as low as -50 mV and as high as near 0 mV. The inactivation of I_L has been found to be both voltage (VDI) and calcium-dependent (CDI) and the latter component may involve calcium-induced calcium release. CDI is often an important aspect of dynamical models of cell electrophysiology. We describe the basic components in modeling I_L including activation and both voltage and calcium dependent inactivation and the two main approaches to determining the current. We review, by means of tables of values from over 65 representative studies, the various details of the dynamical properties associated with I_L that have been found experimentally or employed in the last 25 years in deterministic modeling in various nervous system and cardiac cells. Distributions and statistics of several parameters related to activation and inactivation are obtained. There are few reliable experimental data on L-type calcium current kinetics for cells at physiological calcium ion concentrations. Neurons are divided approximately into two groups with experimental half-activation potentials.
Modelling visual search for surface defects

Much work has been done on developing algorithms for automated surface defect detection. However, comparisons between these models and human perception are rarely carried out. This thesis aims to investigate how well human observers can nd defects in textured surfaces, over a wide range of task di culties. Stimuli for experiments will be generated using texture synthesis methods and human search strategies will be captured by use of an eye tracker. Two di erent modelling approaches will be explored. A computational LNL-based model will be developed and compared to human performance in terms of the number of xations required to nd the target. Secondly, a stochastic simulation, based on empirical distributions of saccades, will be compared to human search strategies.
Highly Efficient Use of Infrared Spectroscopy (ATR-FTIR) to Identify Aphid Species

Simple Summary To date, the identification of aphids, which are serious pests for many plant species, is mainly based on their morphological features. The spectroscopic method, using the chemical composition of the aphid body, has been tested as an option for identifying species. Nine absorption peaks have been established to enable the accurate identification of 12 aphid species. Abstract Aphids are commonly considered to be serious pests for trees, herbaceous and cultivated plants. Recognition and identification of individual species is very difficult and is based mainly on morphological features. The aims of the study were to suggest the possibility of identifying aphids through the use of Fourier-transform infrared (FTIR) spectroscopy, and to determine which absorption peaks are the most useful to separate aphid species. Using FTIR spectroscopy, based on the chemical composition of the body, we were able to distinguish 12 species of aphid. We have shown that using nine distinct peaks corresponding to the molecular vibrations from carbohydrates, lipids, amides I and II, it is possible to accurately identify aphid species with an efficiency of 98%.
Electron-Sheet Metasurfaces for Reconfigurable Beam Patterns

Here, a beam-steering structure based on the interaction of antenna radiation with an electron sheet with swiftly moving electrons with a constant velocity is proposed and studied theoretically. Such electron-sheet metasurface, while uniform and homogeneous in its composition, has a dynamic surface conductivity that exhibits nonlocal response that is dependent on the tangential component of the wave vector impinging on it, and may offer a nonsymmetric conductivity distribution with respect of this wave vector component. As a result, asymmetric radiation patterns may be generated from a single magnetic current line source in the presence of such a metastructure. This effect, introduced by the electron sheet with fast-moving electrons on the radiation properties, can be tailored by modifying the number density and the constant velocity of these electron sheets. We explore the effects of the electron-sheet metasurface on the far-zone radiated field in the presence and absence of a perfect electric conducting ground plane. Some of the electromagnetic features, such as the tilt of radiation pattern in the far zone and the field distribution in the near zone, are also discussed. We envision that this reconfigurable beam steering method may find potential applications in THz, microwave, and optical technologies.
Bubble-Enhanced Mixing Induced by Standing Surface Acoustic Waves (SSAWs) in Microchannel

BAW-based micromixers usually achieve mixing enhancement with acoustic-induced bubbles, while SAW-based micromixers usually enhance mixing efficiency by varying the configuration of IDTs and microchannels. In this paper, bubble-enhanced acoustic mixing induced by standing surface acoustic waves (SSAWs) in a microchannel is proposed and experimentally demonstrated. Significant enhancement in the mixing efficiency was achieved after the bubbles were stimulated in our acoustofluidic microdevice. With an applied voltage of 5 V, 50 times amplified, the proposed mixing microdevice could achieve 90.8% mixing efficiency within 60 s at a flow rate of 240 μL/h. The bubbles were generated from acoustic cavitation assisted by the temperature increase resulting from the viscous absorption of acoustic energy. Our results also suggest that a temperature increase is harmful to microfluidic devices and temperature monitoring. Regulation is essential, especially in chemical and biological applications.
A Multi-Objective Topology Optimization Method Used in Simultaneous Constraints of Natural Frequency and Static Stiffness

A multi-objective topology optimization method, based on the classical 99-line topology optimization program and 169-line 3d topology optimization program is proposed. Two-dimensional MBB beam and three-dimensional cantilever beam are optimized, the solution of the first order natural frequency and static stiffness under the constraint of the same time is given. This method can not only satisfy the strict weight requirement of aerospace products, but also avoid the resonance near the working frequency under the condition of satisfying the static stiffness constraint.
Assessment of the Contribution of Information Adversarial Technology to Educational Development in the Context of Neural Networks

Since the 3rd technological revolution, electronic information has developed at an increasingly rapid pace and has been widely used in various aspects of people’s lives and social production. With the advent of the information society, information security is particularly important and is related to the security of various industries and fields, such as transportation, national defense, and economy. If there is a problem in information, it means that there is a problem in information countermeasures, which leads to the emergence of information countermeasures technology. At present, with the accelerated progress of socialization, the requirements for information technology talents have been raised accordingly, so schools are required to pay attention to the education and training of talents in this area to meet the needs of society and speed up the development of society. Moreover, more and more scholars are recognizing the significance of data analysis technology for education development, and some scholars have constructed learning prediction models from different educational environments and perspectives. However, some of the models have their own limitations and thus can hinder the parameter setting. Therefore, educational researchers need to combine the characteristics of their own educational environment to build a widely adaptable predictive model to provide a good foundation for the development of education. Also, on that basis, information confrontation technology should be applied to explore diverse teaching courses, improve the traditional teaching philosophy, improve the management and evaluation mechanism, provide students with diverse learning styles, emphasize the practical nature of learning, and continuously improve students’ independent problem-solving ability.
Laser-Assisted In Situ Keratomileusis (LASIK) Enhancement for Residual Refractive Error after Primary LASIK

Background: To evaluate the safety, efficacy, and predictability of laser-assisted in situ keratomileusis (LASIK) enhancement after primary LASIK and compare to Food and Drug Administration (FDA) criteria. Methods: Patients who underwent LASIK enhancement after primary LASIK between 2002 and 2019 were compared to those who underwent LASIK without retreatment. Patient demographics, preoperative characteristics, visual outcomes, and postoperative complications were compared between groups. Epithelial ingrowth (EI) development was stratified based on duration between primary and secondary procedures. Results: We compared 901 eyes with LASIK enhancement to 1127 eyes without retreatment. Age, sex, surgical eye, sphere, cylinder, and spherical equivalent (SE) were significantly different between groups (p < 0.05). At 12 months post-enhancement, 86% of the eyes had an uncorrected distance visual acuity of 20/20 or better and 93% of eyes were within ±0.50 D of the target. Development of EI (6.1%) demonstrated an odds ratio of 16.3 in the long-term compared to the short-term (95% CI: 5.9 to 45.18; p < 0.0001). Conclusions: Older age at primary LASIK, female sex, right eye, and larger sphere, cylinder and SE were risk factors for enhancement. Risk of EI significantly increased when duration between primary and enhancement procedures exceeded five years. LASIK enhancements produce favorable outcomes and meet FDA benchmarks for safety, efficacy, and predictability.
Cryobanking European Mink (Mustela lutreola) Mesenchymal Stem Cells and Oocytes

The European mink (Mustela lutreola) is one of Europe’s most endangered species, and it is on the brink of extinction in the Iberian Peninsula. The species’ precarious situation requires the application of new ex situ conservation methodologies that complement the existing ex situ and in situ conservation measures. Here, we report for the first time the establishment of a biobank for European mink mesenchymal stem cells (emMSC) and oocytes from specimens found dead in the Iberian Peninsula, either free or in captivity. New emMSC lines were isolated from different tissues: bone marrow (emBM-MSC), oral mucosa (emOM-MSc), dermal skin (emDS-MSC), oviduct (emO-MSc), endometrium (emE-MSC), testicular (emT-MSC), and adipose tissue from two different adipose depots: subcutaneous (emSCA-MSC) and ovarian (emOA-MSC). All eight emMSC lines showed plastic adhesion, a detectable expression of characteristic markers of MSCs, and, when cultured under osteogenic and adipogenic conditions, differentiation capacity to these lineages. Additionally, we were able to keep 227 Cumulus-oocyte complexes (COCs) in the biobank, 97 of which are grade I or II. The European mink MSC and oocyte biobank will allow for the conservation of the species’ genetic variability, the application of assisted reproduction techniques, and the development of in vitro models for studying the molecular mechanisms of infectious diseases that threaten the species’ precarious situation.