Miracle-dz/UniFAR-FTUs huggingface dataset:
The Cauchy problem for the Korteweg-de Vries equation when the initial data are irregular

In this note we consider the question of the existence and regularity of the solution of the Cauchy problem for the Korteweg-de Vries equation: (1) щ + uxxx = uux, (2) u\t=o = o() in the strip Π^ = (0, Τ] χ R for any Τ > 0, without assumptions on the smoothness of the initial function. The problem (l)-(2) has already been studied under the assumption that uo(x) has a certain smoothness or is of a specific form (see [1 ] [4] , for example). If u(x) G ̂ ( R 1 ) a n d a > 0 is a constant, we put
The Impact of Dropsonde Data on the Performance of the NCEP Global Forecast System During the 2020 Atmospheric Rivers Observing Campaign. Part 1: Precipitation

The impact of assimilating dropsonde data from the 2020 Atmospheric River (AR) Reconnaissance (ARR) field campaign on operational numerical precipitation forecasts was assessed. Two experiments were executed for the period from 24 January to 18 March 2020 using the NCEP Global Forecast System version 15 (GFSv15) with a four-dimensional hybrid ensemble-variational (4DEnVar) data assimilation system. The control run (CTRL) used all the routinely assimilated data and included ARR dropsonde data, whereas the denial run (DENY) excluded the dropsonde data. There were 17 Intensive Observing Periods (IOPs) totaling 46 Air Force C-130 and 16 NOAA G-IV missions to deploy dropsondes over targeted regions with potential for downstream high-impact weather associated with the ARs. Data from a total of 628 dropsondes were assimilated in the CTRL. The dropsonde data impact on precipitation forecasts over U.S. West Coast domains is largely positive, especially for day 5 lead time, and appears driven by different model variables on a case-by-case basis. These results suggest that data gaps associated with ARs can be addressed with targeted ARR field campaigns providing vital observations needed for improving U.S. West Coast precipitation forecasts.
Spectrum and Energy-Efficiency Maximization in RIS-Aided IoT Networks

New device capabilities supporting spectrum and energy-efficient internet of things (IoT) deployments are expected to drive the evolution of fifth-generation (5G) and beyond networks. Due to operating on the same spectrum of resources, every IoT pair interferes with each other. This paper utilizes reconfigurable intelligent surfaces (RISs) to mitigate inter-node interference in an IoT network through directional beamforming by adjusting the phase shifts of the passive elements of the RIS. We consider an RIS-assisted IoT network consisting of multiple pairs of IoT devices that utilize both direct paths and one-hop reflected paths. Two resource allocation problems, namely spectrum-efficiency maximization (SEM) and energy-efficiency maximization (EEM), are studied. Since the formulated optimization problems are non-convex in nature, we divide them into two sub-problems and solve them alternately. To obtain the optimal phase shifts of the elements of the RIS for both SEM and EEM, we extend the conjugate gradient technique to Riemannian manifolds. On the other hand, to obtain the optimal transmit power, we solve the transmit power allocation sub-problem as a difference of concave functions for the SEM and use a pricing-based technique for the EEM. Numerical results validate the effectiveness of deploying RISs to assist IoT networks, albeit concerning the RIS’s location, its number of elements, and the number of IoT node pairs. In particular, considerable spectrum and energy efficiency gains are achieved in comparison to baseline state-of-the-art networks.
Exchange Relationship between Companies and Competitors in Building Materials Retail Sector in Palu

Abstract Relation between firms and competitors are always related with rivalry in profit seeking, but the truth is, both firms and competitors can work together and fulfill each other’s requirement. This research aims to explore how exchange relation happens between firms and competitors in building materials sector retail. Participants in this study were 4 business owner. Data collection was conducted through interviews and documents. This study shows that focal firm coopeti-ed with competitors through informal interactions by several situation that causes them to cooperate and compete. When both sides compete, this research found several things that are being competed by both sides, and when they cooperate, this research found several exchanged resources along with the benefit for both parties. Additional findings in this research are the appearance of coexistence relation between focal firms and competitors which is not the focus of this research, and how there is good and bad competitors in business. Keyword : Coopetition, Resource Exchange, Building Materials Sector Retail, Competitor
Status of Chiral-Scale Perturbation Theory

Chiral-scale perturbation theory $\chi$PT$_\sigma$ has been proposed as an alternative to chiral $SU(3)_L\times SU(3)_R$ perturbation theory which explains the $\Delta I = 1/2$ rule for kaon decays. It is based on a low-energy expansion about an infrared fixed point in three-flavor QCD. In $\chi$PT$_\sigma$, quark condensation $\langle\bar q q \rangle_\mathrm{vac} \neq 0$ induces nine Nambu-Goldstone bosons: $\pi, K, \eta$ and a QCD dilaton $\sigma$ which we identify with the $f_0(500)$ resonance. Partial conservation of the dilatation and chiral currents constrains low-energy constants which enter the effective Lagrangian of $\chi$PT$_\sigma$. These constraints allow us to obtain new phenomenological bounds on the dilaton decay constant via the coupling of $\sigma/f_0$ to pions, whose value is known precisely from dispersive analyses of $\pi\pi$ scattering. Improved predictions for $\sigma \to \gamma \gamma$ and the $\sigma NN$ coupling are also noted. To test $\chi$PT$_\sigma$ for kaon decays, we revive a 1985 proposal for lattice methods to be applied to $K \to \pi$ on-shell.
Thermoelectric properties of Co-, Ir-, and Os-doped FeSi alloys: Evidence for strong electron-phonon coupling

The effects of various transition-metal dopants on the electrical and thermal transport properties of Fe{sub 1-x}M{sub x}Si alloys (M = Co, Ir, Os) are reported. The maximum thermoelectric figure of merit ZT{sub max} is improved from 0.007 at 60 K for pure FeSi to ZT = 0.08 at 100 K for 4% Ir doping. A comparison of the thermal conductivity data among Os-, Ir-, and Co-doped alloys indicates strong electron-phonon coupling in this compound. Because of this interaction, the common approximation of dividing the total thermal conductivity into independent electronic and lattice components (K{sub total} = K{sub electronic} + K{sub lattice}) fails for these alloys. The effects of grain size on thermoelectric properties of Fe{sub 0.96}Ir{sub 0.04}Si alloys are also reported. The thermal conductivity can be lowered by {approx}50% with little or no effect on the electrical resistivity or Seebeck coefficient. This results in ZT{sub max} = 0.125 at 100 K, still approximately a factor of 5 too low for solid-state refrigeration applications.
Gas stripping and mixing in galaxy clusters: a numerical comparison study

The ambient hot intrahalo gas in clusters of galaxies is constantly fed and stirred by infalling galaxies, a process that can be studied in detail with cosmological hydrodynamical simulations. However, different numerical methods yield discrepant predictions for crucial hydrodynamical processes, leading for example to different entropy profiles in clusters of galaxies. In particular, the widely used Lagrangian smoothed particle hydrodynamics (SPH) scheme is suspected to strongly damp fluid instabilities and turbulence, which are both crucial to establish the thermodynamic structure of clusters. In this study, we test to which extent our recently developed Voronoi particle hydrodynamics (VPH) scheme yields different results for the stripping of gas out of infalling galaxies and for the bulk gas properties of cluster. We consider both the evolution of isolated galaxy models that are exposed to a stream of intracluster medium or are dropped into cluster models, as well as non-radiative cosmological simulations of cluster formation. We also compare our particle-based method with results obtained with a fundamentally different discretization approach as implemented in the moving-mesh code arepo. We find that VPH leads to noticeably faster stripping of gas out of galaxies than SPH, in better agreement with the mesh-code than with SPH. We show that despite the fact that VPH in its present form is not as accurate as the moving mesh code in our investigated cases, its improved accuracy of gradient estimates makes VPH an attractive alternative to SPH.
Effectiveness of Dry Needling of Myofascial Trigger Points in the Triceps Surae Muscles: Systematic Review

This study aims to analyze the effects of Dry Needling (DN) for the release of myofascial trigger points (MTrPs) in the triceps surae muscles (TSM). A systematic review was performed up to February 2022 in PubMed, PEDro, Scopus, CENTRAL, and Web of Science. Selection criteria were studies involving subjects older than 18 years presenting MTrPs in the TSM, without any concomitant acute or chronic musculoskeletal conditions; DN interventions applied to the MTrPs of the TSM; and results on pain, range of motion (ROM), muscle strength, muscle stiffness, and functional outcomes. The PEDro scale was used to assess the methodological quality of the studies, and the Risk of Bias Tool 2.0 to assess risk of bias. A total of 12 studies were included in the systematic review, involving 426 participants. These results suggest that DN of MTrPs in TSM could have a positive impact on muscle stiffness and functional outcomes. There are inconclusive findings on musculoskeletal pain, ROM, and muscle strength. Significant results were obtained in favor of the control groups on pressure pain thresholds. Despite the benefits obtained on muscle stiffness and functional performance, the evidence for the use of DN of MTrPs in the TSM remains inconclusive.
Primary Treatment Results in Patients with Ovarian, Fallopian or Peritoneal Cancer—Results of a Clinical Cancer Registry Database Analysis in Germany

Simple Summary Diagnosis and treatment of ovarian cancers has changed significantly over the last years. However, the role of primary surgery and chemotherapy remain important parts of the multimodal treatment. Furthermore, real life data are often lacking but are very important for improving quality indicators and for hypothesis generation for future trials. The present work represents the first major analysis of federal cancer registry data of OC patients in Germany. Overall, 2771 primary OC cases were included. The results clearly elucidate quality measurements and treatment results and show good treatment outcomes in patients with primary OC compared to other internationally reported outcomes. Abstract Background: The current therapy of ovarian cancer is based on the so-called “Three-Pillar-Model”, consisting of surgery, chemotherapy and maintenance therapy. This study represents the first major analysis of a federal cancer database of OC patients from the states Berlin/Brandenburg in Germany. The primary objective was to evaluate the prevailing established quality indicators surgical outcome, adjuvant chemotherapy and integrity of surgical staging in early stages. Methods: Data from the Clinical Cancer Registry for Brandenburg and Berlin of the years 2009–2019 were analyzed. Objectives were defined by a working group of selected physicians. Descriptive statistics were performed, as well as survival analysis. Results: A total of 2771 primary OC cases were included. Results regarding histological subtype met the suspected allocation with predominantly high-grade serous OC in advanced stage. The rate of complete surgical staging in FIGO stages I–IIA was 57%, and the rate of macroscopic complete resection in >FIGO III was 53%. Five-year survival rate varied from 79% (FIGO I) to 40% (FIGO III). Rate of adjuvant chemotherapy was above 50%. Conclusion: The results elucidate quality measurements and treatment results and show good treatment outcomes in patients with primary diagnosis. However, they also indicate deficits and can help to establish new quality indicators to further improve the treatment.
Unveiling the Impacts of Biochar, Manure and Their Optimal Combinations on Microbiological Soil Health Indicators and Lettuce Biomass

Continuous use of chemical fertilizers has deteriorated soil health and crop productivity. Replenishing soil nutrients and microbial activity with eco-friendly soil amendments such as biochar and manure is therefore necessary to sustain soil health for crop production. However, studies are limited regarding the evaluation of biochar and poultry manure effects on soil health, attributed mainly to microbial extracellular enzymes and respiration. Therefore, the present study was designed to investigate the effects of poultry manure and biochar on soil physico-chemical and microbiological properties and lettuce biomass accumulation in a pot experiment. The pots were amended with poultry manure either alone and or in combination with low (10%) and high (20%) rates of biochar. The treatments included were; (i) control, (ii) manure alone (M), (iii) manure plus 10% biochar (M + B10, and (iv) manure plus 20% biochar (M + B20). Results revealed that soil extracellular enzymes related to C, N, and P mineralization, soil basal (BR), and substrate induced respirations (SIR) were significantly affected by applied manure and manure–biochar. However, there were large differences observed for applied amendments regarding various soil and crop parameters. Specifically, the manure combined with a high rate of biochar (M + B20) enhanced total carbon (TC) content, dehydrogenase activity (DHA), BR, and all SIRs except Arginine-IR. On the other hand, manure combined with a low rate of biochar (M + B10) resulted in enhanced lettuce aboveground dry biomass (AGB-dry). The manure treatment alone (M), however, proved to be the most influential treatment in improving soil enzymes (β-glucosidase, N-acetyl-β-d-glucosaminidase and phosphatase) involved in C, N, and P mineralization compared to the other treatments and control. Thus, it was concluded that the sole application of M and M + B20 improved both fertility and soil health, which therefore could be a promising direction for the future to enhance soil quality and crop productivity.
The modal method : a reference method for modeling of the 2D metal diffraction gratings

Diffractive elements are widely used in many applications now as the microstructuring technologies are making fast progresses in the wake of microelectronics. For the optimization of these elements accurate modeling methods are needed. There exists well-developed and widely used methods for one-dimensional diffraction gratings of different types. However, the methods available for solving two-dimensional periodic structures do not cover all possible grating types. The development of a method to calculate the diffraction efficiency of two dimensional metallic gratings represents the objective of this work. The one-dimensional true-mode method is based on the representation of the field inside the periodic element as a superposition of particular solutions, each one of them satisfying exactly the boundary conditions. In the developed method for the two-dimensional gratings the representation of the field within the grating in such way is used. In the present work, the existing modal methods for one-dimensional gratings can be used as the basis for the construction of the modal field distribution functions within two-dimensional gratings. The modal function distributions allow to calculate the overlap integrals of the fields outside the grating with those within the structure. The transition matrix coefficients are formed on the basis of these integrals. The final stage is the calculation of the scattering matrix based on two transition matrices. The equations for the field reconstruction are provided and accompanied by examples of results. Further equations used to calculate the overlap integrals and scattering matrix coefficients are provided
A Review of Quality Assurance Research of Dialogue Systems

With the development of machine learning and big data technology, dialogue systems have been applied to many fields, including aerospace, banking and other scenarios that require high accuracy of answer. This has prompted a great deal of research on quality verification and assurance of dialogue systems. As two means to ensure the quality of software, testing and evaluation are rarely comprehensively summarized in current research work. Firstly, the dialogue systems are classified according to different classification standards. Secondly, this paper reviews the existing quality assurance work of dialogue systems from testing and dialogue evaluation, including testing methods, testing tools, evaluation metrics and dialogue quality attributes. Moreover, the issues and needs are discussed aiming at the deficiency in the current work, which can provide references for future research.
Comparing social representations of feminism among education and engineering majors: Insights for developing feminist pedagogies

The present study uses Social Representation Theory to explore students’ representations of feminism with a view to informing principles for developing feminist pedagogies that can help foster egalitarian values among college students. The aim is to identify how Spanish students (n = 366) represent feminism and how these representations are shaped by participants’ gender, identification with feminism, or by studying feminized or masculinized disciplines. Students from Education (n = 192), a feminized qualification, and Engineering (n = 174), a masculinized qualification, completed a free association task using the Grid Elaboration Method to collect representations of feminism. A lexical analysis was conducted using the Reinert method. The results showed that a positive representation of feminism was the broadest (75.8%), with feminist-identified students defining feminism as a struggle for freedom. Feminist women emphasized the importance of achieving equality, and education students emphasized the importance of education in the process of women's empowerment. In contrast, 24.2% represented feminism negatively, as an extreme movement, especially engineering, non-feminist, and male students. These findings suggest that efforts aimed at developing feminist principles among students consider not only gender and feminist identification but also the context of feminized or masculinized disciplines as key spaces of gendered socialization. The study was carried out in the Basque country, Spain.
Correlation between Retinal Vascularization and Disease Aggressiveness in Amyotrophic Lateral Sclerosis

Abnormalities in retinal vascularization and neural density have been found in many neurodegenerative diseases; however, conflicting results are described in Amyotrophic Lateral Sclerosis (ALS). The aim of the present study was, therefore, to systematically analyze retinal layers and vascularization by means of spectral-domain (SD-OCT) and optical coherence tomography angiography (OCT-A) in ALS patients. We enrolled 48 ALS patients and 45 healthy controls. ALS patients were divided into three groups: slow progressors (n = 10), intermediate progressors (n = 24) and fast progressors (n = 14), according to the disease progression rate. For SD-OCT, we evaluated the Subfoveal choroidal thickness (SFCT), ganglion cell complex (GCC) and retinal nerve fiber layer (RNFL). Regarding the OCT-A, we assessed the vessel density (VD) in superficial and deep capillary plexuses, radial peripapillary capillary plexus, choriocapillary and the foveal avascular zone (FAZ) area. SD-OCT exam did not show any significant differences in GCC and RNFL thickness between patients and controls and among the three ALS groups. The SFCT was statistically greater in patients compared with controls (357.95 ± 55.15 µm vs. 301.3 ± 55.80 µm, p < 0.001); interestingly, the SFCT was thicker in patients with slow and intermediate disease progression than in those with fast disease progression (394.45 ± 53.73 µm vs. 393.09 ± 42.17 µm vs. 267.71 ± 56.24 µm, p < 0.001). OCT-A did not reveal any significant results. Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised (ALSFRS-r) and disease duration did not correlate with any of the OCT parameters, except for SFCT with ALSFRS-r (r = 0.753, p = 0.024). This study demonstrated the possible association between choroidal thickness and disease activity in ALS. OCT could be a useful biomarker in the management of the disease.
Effects of Oral Glutamine Supplementation, Birthweight and Age on Colonic Morphology and Microbiome Development in Male Suckling Piglets

Mortality, impaired development and metabolic dysfunctions of suckling low-birthweight piglets may be influenced by modulating the intestinal microbiome through glutamine supplementation. Therefore, this study examined whether glutamine supplementation may affect the colonic development and microbiome composition of male low- and normal-birthweight piglets at 5 and 12 days of age. Suckling piglets were supplemented orally with glutamine or alanine. Colonic digesta samples were obtained for 16S rDNA sequencing, determination of bacterial metabolites and histomorphological tissue analyses. Glutamine-supplemented piglets had lower concentrations of cadaverine and spermidine in the colonic digesta (p < 0.05) and a higher number of CD3+ colonic intraepithelial lymphocytes compared to alanine-supplemented piglets (p < 0.05). Low-birthweight piglets were characterised by a lower relative abundance of Firmicutes, the genera Negativibacillus and Faecalibacterium and a higher abundance of Alistipes (p < 0.05). Concentrations of cadaverine and total biogenic amines (p < 0.05) and CD3+ intraepithelial lymphocytes (p < 0.05) were lower in low- compared with normal-birthweight piglets. In comparison to the factor age, glutamine supplementation and birthweight were associated with minor changes in microbial and histological characteristics of the colon, indicating that ontogenetic factors play a more important role in intestinal development.
Measuring Disability among Migrants with Washington Group Tools: Reflections for Field Use

Measuring disability among migrants is a significant challenge; however, there is no consensus on how to measure disability and functional limitations. The present study reports a methodological approach to measure disability in refugees and asylum seekers using Washington Group (WG) tools, namely the WG Short Set (WG-SS), the Short Set Enhanced (WG-SS-E), and the Extended Set on Functioning (WG-ES). We interviewed 161 migrants in different regions of Italy. The recommended threshold for each WG tool was used. We identified 13.7% of migrants with disabilities using the WG-SS, 21.7% using the WG-SS-E, and 31.6% using the WG-ES. Anxiety and depression were the main weights to identify migrants with disabilities (11.8%). The WG-SS does not measure mental health, and therefore we do not suggest its use in the field. However, the WG-SS-E, together with some questions on pain and fatigue, should be considered to identify migrants with a greater risk of disability.