Miracle-dz/UniFAR-FTUs huggingface dataset:
The eight-vertex model and Painlevé VI equation II: eigenvector results

We study a special anisotropic -model on a periodic chain of an odd length and conjecture exact expressions for certain components of the ground state eigenvectors. The results are written in terms of tau-functions associated with Picard's elliptic solutions of the Painlevé VI equation. Connections with other problems related to the eight-vertex model are briefly discussed.
Resistive wall mode physics and control challenges in JT-60SA high βN scenarios

The superconducting tokamak JT-60SA is being built in Naka (Japan) under the Broader Approach Satellite Tokamak Programme jointly by Europe and Japan, and under the Japanese national programme. JT-60SA has an important supporting mission for the development of fusion energy. It will help in both the exploitation of ITER and in the definition of an optimized DEMO design. The focus of this work is set on high scenarios, in which kink-like instabilities (e.g. one or more resistive wall modes) are potentially unstable and possibly lead to disruptions. As a fundamental step to ensure the safe realization of high plasmas, modeling activities are being carried out for MHD stability and control. The drift-kinetic damping model in particular will be considered in the present work, with a stability study in Scenario 5-like plasmas carried out with MARS-F/K. Resistive wall mode (RWM) stability is found with this model for low plasma rotation and precession drift resonance with thermal ions. The dependence on normalized and flow profile is discussed. The challenge of active control is also addressed, taking advantage of the set of RWM control coils that JT-60SA will install. A dynamic simulator, based on the CarMa code, has been developed for feedback control modeling. A demonstration of this tool is given for one of the aforementioned plasmas. Stabilization of the most unstable RWM is achieved within basic power limits. Potential applications, results and latest development of this tool are discussed.
Low-energy ion polishing of Si in W/Si soft X-ray multilayer structures

The effect of ion polishing in sputter deposited W/Si multilayer mirrors with a d-spacing of 2.5 nm was studied. 0.1 to 0.5 nm of Si were etched with 100 eV Ar+ ions. This process resulted in a pro.
Testing Lorentz Invariance Violation at the Pierre Auger Observatory

In this work, we present the capabilities of testing Lorentz invariance violation (LIV) using data from the Pierre Auger Observatory. Two independent scenarios are treated. Firstly, LIV on the hadron sector is considered and the modified UHECR propagation obtained. An updated combined fit of the spectrum and composition data is performed for each LIV assumption. The data is better described with a low maximum rigidity at sources, which leads to a poor sensitivity to LIV effects. Secondly, subluminal LIV on the photon sector is considered and the propagation of GZK photons is modified. For one of the scenarios considered, very competitive limits on the LIV coefficient of the order of $\delta_\gamma^{(1)} \gtrsim -10^{-40} \, \text{eV}^{-1}$ and $\delta_\gamma^{(2)} \gtrsim -10^{-60} \, \text{eV}^{-2}$ are imposed. Finally, we discuss a promising possibility of testing LIV using the development of UHE air-showers.
Mesh Phase Analysis of Encased Differential Gear Train for Coaxial Twin-Rotor Helicopter

Dynamic excitation caused by time-varying meshing stiffness is one of the most important excitation forms in gear meshing process. The mesh phase relations between each gear pair are an important factor affecting the meshing stiffness. In this paper, the mesh phase relations between gear pairs in an encased differential gear train widely used in coaxial twin-rotor helicopters are discussed. Taking the meshing starting point where the gear tooth enters contact as the reference point, the mesh phase difference between adjacent gear pairs is analyzed and calculated, the system reference gear pair is selected, and the mesh phase difference of each gear pair relative to the system reference gear pair is obtained. The derivation process takes into account the modification of the teeth, the processing, and assembly of the duplicate gears, which makes the calculation method and conclusion more versatile. This work lays a foundation for considering the time-varying meshing stiffness in the study of system dynamics, load distribution, and fault diagnosis of compound planetary gears.
Relationship between orbit decomposition on the flag varieties and multiplicities of induced representations

Let G be a real reductive Lie group and H a closed subgroup. T. Kobayashi and T. Oshima established a finiteness criterion of multiplicities of irreducible G-modules occurring in the regular representation C1ðG=HÞ by a geometric condition, referred to as real sphericity, namely, H has an open orbit on the real flag variety G=P . This note discusses a refinement of their theorem by replacing a minimal parabolic subgroup P with a general parabolic subgroup Q of G, where a careful analysis is required because the finiteness of the number of H-orbits on the partial flag variety G=Q is not equivalent to the existence of H-open orbit on G=Q.
Random Force Perturbations: A New Extension of the Cell Perturbation Method for Turbulence Generation in Multiscale Atmospheric Boundary Layer Simulations

Coupling between mesoscale and large eddy simulation (LES) is critically important for many atmospheric model applications, from predictions of wind energy to fire propagation. The grid‐nesting technique enables bridging between vastly different scales without incurring prohibitive computational costs. However, the transition from coarser to finer resolutions often requires a large number of grid points from inflow boundaries for the development of fine‐scale turbulence features in the LES domain. Recently, the cell perturbation method (CPM) was developed to reduce the turbulence development region with high computational efficiency. Herein, we explore a new method based on the CPM that uses force perturbations in both the horizontal and vertical directions (Force Cell Perturbation Method) instead of the potential temperature perturbations in the original CPM, as an attempt to further explore the performance of the random perturbation techniques. This approach is tested for a neutral and a convective atmospheric boundary layer under idealized conditions. Overall, similar performance is found between the optimal configurations of the CPM and the Force Cell Perturbation Method pointing to the robustness of this family of perturbation methods in accelerating turbulence generation in nested domains. Vertical force perturbations performed better than horizontal force perturbations for both atmospheric stability conditions. The CPM performed best under convective stability conditions. The combination of the force and potential temperature perturbations is found to provide no additional performance improvement over the stand‐alone application of the individual methods.
Keypoint Based Authentication And Localization Of Copy-Move Forgery In Digital Image

With the development of powerful image processing tools and the increasing trend of using images as the main carrier of information, digital image forgery has become an increasingly serious issue. In copy-move forgery, one part of an image is copied and placed elsewhere in the same image. This paper puts forward an effective method based on SIFT for detecting copy-move forgery in digital image. The proposed method can accurately authenticate digital image and locate areas which have been tampered with. The algorithm starts by using scale-invariant features transform (SIFT) to extract local image features, which are known as keypoints, and then searches for similar keypoints based on their Euclidean distances. Finally, the matched keypoints, which represent the copied and pasted areas, are associated with one and another to indicate which parts of the image have been tampered with. Experiments are performed to validate the effectiveness of this method on different attacks, and to quantify its robustness against post-processing. Results show that the method is robust against several geometric processings, including JPEG compression, rotation, noise, and scaling. As a representative result, when considering the standard test dataset MICC-F220, the proposed method achieves true and false positive rates of 100% and 3.12%, respectively.
HUBUNGAN ANTARA KOORDINASI MATA-TANGAN DENGAN KEMAMPUAN PASSING BAWAH PERMAINAN BOLAVOLI

Tujuan penelitian ini adalah untuk mengetahui hubungan antara koordinasi mata-tangan dengan kemampuan passing bawah permainan bolavoli. Metode penelitian menggunakan metode deskriptif pola korelasional. Sampel penelitian adalah siswa di salah-satu Sekolah Menengah Pertama (SMP) di kota Bandung yang mengikuti ekstrakurikuler bolavoli sebanyak 23 orang. Instrumen penelitian koordinasi mata tangan dengan menggunakan tes lempar tangkap bola ke dinding dengan tingkat validitas sebesar = 0,84 dan realibilitas = 0,78. Sedangkan untuk mengukur kemampuan pasing bawah dengan menggunakan Brady Test dengan tingkat validitas sebesar = 0,96 dan realibilitas = 0,78. Teknik pengolahan dan analisis data menggunakan uji linieritas, perhitungan persamaan regresi dan perhitungan koefisien korelasi (pearson product moment). Dari hasil pengolahan dan analisis data diperoleh koefisien korelasi sebesar 0,67, hal ini menunjukkan hubungan yang cukup besar. Uji signifikansi korelasi menunjukkan thitung lebih besar dari ttabel dengan tingkat kepercayaan 95 %, hal ini menunjukkan kadua variabel memiliki hubungan signifikan. Hasil uji signifikansi dan linieritas persamaan regresi diperoleh angka 6,75 > 4,32 atau Fsign hitung > F sign tabel, artinya terdapat hubungan fungsional linier dan signifikan antara koordinasi mata-tangan) dengan kemampuan pasing bawah permainan bolavoli.
Dark Matter Searches from the Sun with the KM3NeT-ORCA detector

The ORCA (Oscillations Research with Cosmics in the Abyss) detector is currently being deployed in the Mediterranean sea, near Toulon (France). With an instrumented volume of 8 Mton, this water Cherenkov detector is the KM3NeT detector with the highest granularity optimised to observe atmospheric neutrinos in the GeV range. Even though the primary goal of ORCA is to determine the neutrino mass ordering, the detector is also well suited to perform indirect searches for dark matter signals coming from very massive objects like the Sun. A popular set of dark matter candidates are those based on WIMPs (Weakly Interactive Massive Particles). WIMPs decay or annihilate into standard model particles producing also neutrinos which propagate to the detector in the Earth. The ORCA analysis for WIMP searches from the Sun, considering several physics channels, will be presented and the results in terms of sensitivity to neutrino flux, spin-dependent and spin-independent scattering cross section reported.
Analysis of a southern sub-polar short-term ozone variation event using a millimetre-wave radiometer

Abstract. Subpolar regions in the Southern Hemisphere are influenced by the Antarctic polar vortex during austral spring, which induces high and short-term ozone variability at different altitudes, mainly into the stratosphere. This variation may affect considerably the total ozone column changing the harmful UV radiation that reaches the surface. With the aim of studying ozone with a high time resolution at different altitudes in subpolar regions, a millimetre-wave radiometer (MWR) was installed at the Observatorio Atmosférico de la Patagonia Austral (OAPA), Río Gallegos, Argentina (51.6∘ S, 69.3∘ W), in 2011. This instrument provides ozone profiles with a time resolution of ∼1 h, which enables studies of short-term ozone mixing ratio variability from 25 to ∼70 km in altitude. This work presents the MWR ozone observations between October 2014 and 2015, focusing on an atypical event of the polar vortex and Antarctic ozone hole influence over Río Gallegos detected from the MWR measurements at 27 and 37 km during November of 2014. During the event, the MWR observations at both altitudes show a decrease in ozone followed by a local peak of ozone amount of the order of hours. This local recovery is observed thanks to the high time resolution of the MWR mentioned. The advected potential vorticity (APV) calculated from the MIMOSA high-resolution advection model (Modélisation Isentrope du transport Méso-échelle de l'Ozone Stratosphérique par Advection) was also analysed at two isentropic levels (levels of constant potential temperature) of 675 and 950 K (∼27 and ∼37 km of altitude, respectively) to understand and explain the dynamics at both altitudes and correlate the ozone rapid recovery with the passage of a tongue with low PV values over Río Gallegos. In addition, the MWR dataset was compared for the first time with measurements obtained from the Microwave Limb Sounder (MLS) at individual altitude levels (27, 37 and 65 km) and with the differential absorption lidar (DIAL) installed in the OAPA to analyse the correspondence between the MWR and independent instruments. The MWR–MLS comparison presents a reasonable correlation with mean bias errors of +5 %, −11 % and −7 % at 27, 37 and 65 km, respectively. The MWR–DIAL comparison at 27 km also presents good agreement, with a mean bias error of −1 %.
Surface‐Atmosphere Coupling Scale, the Fate of Water, and Ecophysiological Function in a Brazilian Forest

Tropical South America plays a central role in global climate. Bowen ratio teleconnects to circulation and precipitation processes far afield, and the global CO2 growth rate is strongly influenced by carbon cycle processes in South America. However, quantification of basin‐wide seasonality of flux partitioning between latent and sensible heat, the response to anomalies around climatic norms, and understanding of the processes and mechanisms that control the carbon cycle remains elusive. Here, we investigate simulated surface‐atmosphere interaction at a single site in Brazil, using models with different representations of precipitation and cloud processes, as well as differences in scale of coupling between the surface and atmosphere. We find that the model with parameterized clouds/precipitation has a tendency toward unrealistic perpetual light precipitation, while models with explicit treatment of clouds produce more intense and less frequent rain. Models that couple the surface to the atmosphere on the scale of kilometers, as opposed to tens or hundreds of kilometers, produce even more realistic distributions of rainfall. Rainfall intensity has direct consequences for the “fate of water,” or the pathway that a hydrometeor follows once it interacts with the surface. We find that the model with explicit treatment of cloud processes, coupled to the surface at small scales, is the most realistic when compared to observations. These results have implications for simulations of global climate, as the use of models with explicit (as opposed to parameterized) cloud representations becomes more widespread.
Study of the vibrational dynamics of glasses

The present thesis work is devoted to the study of the vibrational dynamics in glasses, in particular we investigated the low frequency anomaly: the Boson Peak. In the first chapter the general aspects of the glassy state are. Here wediscuss how the anomalous thermodynamic behavior of glasses can be associated to the presence of the Boson Peak in the density of vibrational state of the glass. In the second chapter we discuss the main spectroscopic techniques used in this study: Nuclear Inelastic Scattering (NIS) and the Inelastic X-ray Scattering (IXS). In the third chapter we present the study of a hyperquenched glass. In this chapter the effects of the thermal history on the dynamical and structural properties of glasses are investigated. The fourth chapter is dedicated to the study of the effect of pressure and density on the DOS of a glass. The changes that the DOS experiences are correlated once more to the macroscopic changes, unless a structural transformation takes place. Finally we present a study on the high frequency dynamics (in the THz frequency region) of glassy ortho-terphenyl, and the effect of pressure on this dynamics is discussed. From the comparison of our results to others data available in the literature it has been possible to deduce some conclusions on the nature of the acoustic modes at energies comparable to that of the BP.
A Novel p-LDMOS Additionally Conducting Electrons by Control ICs

A silicon-on-insulator (SOI) p-channel lateral double-diffused MOSFET (p-LDMOS), conducting not only holes but also electrons, is proposed and investigated by TCAD simulations. Its most important advantage is the greatly improved relationship between the breakdown voltage (BV) and the specific on-resistance (<inline-formula> <tex-math notation="LaTeX">${R} _{\mathrm{ on,sp}}$ </tex-math></inline-formula>). The improvement is mainly attributed to two aspects. First, many holes can accumulate in the p-drift region in the on-state, which provides a low-resistance path for hole conduction. Second, a paralleled n-LDMOS is, meanwhile, automatically triggered to form a new path for electrons. Electrons have higher mobility than holes; thus, the device performance is further improved. Based on a simulation comparison with the previous p-LDMOS at the same BV of 300 V, the <inline-formula> <tex-math notation="LaTeX">${R} _{\mathrm{ on,sp}}$ </tex-math></inline-formula> of the proposed p-LDMOS decreased by 78% and the figure of merit (FOM) increased approximately 3.4 times. Moreover, the proposed device still has the conventional three-terminal style, and its fabrication process is compatible with CMOS technology.
Iterative Double Laplacian-Scaled Low-Rank Optimization for Under-Sampled and Noisy Signal Recovery

Recovering signal from under-sampled and erratic noise-corrupted seismic data is indeed a challenging task because of its difficulty in simultaneous modeling of erratic noise and missing signal. Assuming that the recorded data are the superposition of low-rank and sparse components, many related works have been reported using a hybrid rank-sparsity constraint. Those published works typically detect the rank and erratic noise using empirical and global thresholds, which often fail to well characterize the varying sparsity and easily cause biased estimation in case of their nonstationary distribution. We propose an iterative double Laplacian-scaled low-rank optimization to adaptively select the sparsity and rank regularizer parameters for robust signal recovery. Comparing with the published approaches with global threshold, Laplacian-scaled mixture, which is obtained by multiplying Laplacian variable with a Gamma variable, is used to locally model the sparsity of erratic noise and the low-rank feature of signal. Then, the expectation–maximization (EM) algorithm is used to transform the Laplacian-scaled mixture problem into a localized reweighted $\ell _{1}$ minimization scheme. The weighted coefficient appearing in its EM solver provides a variable constraint to locally address the rank and erratic noise, and hence, their regularizer parameters can dynamically reflect the different importance of those coefficients. We tested the effectiveness of the proposed method using under-sampled synthetic and field data that are corrupted by erratic noise and used other state-of-the-art methods as comparisons. The results showed that more exact estimations of the signal and erratic noise can be obtained using the proposed method.
Producing 3-D Imitations of Soft Magnetic Composite Material Geometries

The main purpose of this paper is to describe a new algorithmic method to imitate 3-D geometries of soft magnetic composite materials. This method allows constructing various kinds of geometries for experimenting how certain geometric features affect different electromagnetic properties of the materials. Using the geometry imitations, we demonstrate that in order to explain the nonlinear static magnetic behavior of a certain composite, it is not necessary to assume contacts between the neighboring particles in the material. The contacts may instead be replaced by thin gaps.
Iterative multilevel particle approximation for McKean–Vlasov SDEs

The mean ﬁeld limits of systems of interacting diffusions (also called stochastic interacting particle systems (SIPS)) have been intensively studied since McKean [25] as they pave a way to probabilistic representations for many important nonlinear/nonlocal PDEs. The fact that particles are not independent render classical variance reduction techniques not directly applicable and consequently make simulations of interacting diffusions prohibitive. In this article, we provide an alternative iterative particle representation, inspired by the ﬁxed point argument by Sznitman [30]. The representation enjoys suitable conditional independence property that is leveraged in our analysis. We establish weak convergence of iterative particle system to the McKean-Vlasov SDEs (McKV-SDEs). One of the immediate advantages of iterative particle system is that it can be combined with the Multilevel Monte Carlo (MLMC) approach for the simulation of McKV-SDEs. We proved that the MLMC approach reduces the computational complexity of calculating expectations by an order of magnitude. Another perspective on this work is that we analyse the error of nested Multilevel Monte Carlo estimators, which is of independent interest. Furthermore, we work with state dependent functionals, unlike scalar outputs which are common in literature on MLMC. The error analysis is carried out in uniform, and what seems to be new, weighted norms. 2010
Moment based estimation of supOU processes and a related stochastic volatility model

After a quick review of superpositions of OU (supOU) processes, integrated supOU processes and the supOU stochastic volatility model we estimate these processes by using the generalized method of moments (GMM). We show that the GMM approach yields consistent estimators and that it works very well in practice. Moreover, we discuss the influence of long memory effects.
Penerapan Sistem Pengecekan Mahasiswa Layak KKP Berbasis YII Framework Pada Perguruan Tinggi

Abstrak Pada zaman modern perkembangan teknologi sudah semakin pesat dan mudah diakses. Sebagai pelopor dalam bidang teknologi informasi, Perguruan Tinggi Raharja selalu berinovasi dalam hal penerapan teknologi. Karena teknologi memberikan kecepatan dan kemudahan kepada penggunanya. Namun saat ini pengecekan mahasiswa layak Kuliah Kerja Praktek (KKP) yang dilakukan oleh kepala jurusan masih belum memberikan kemudahan dan menjadi kurang efektif. Karena yang berjalan saat ini mahasiswa baru mengetahui bahwa dirinya layak KKP saat batal tambah OJRS+ pada Sis PLus. Dalam penelitian ini terdapat 3 (tiga) permasalahan yang teridentifikasi mengenai pengecekan mahasiswa layak KKP pada Perguruan Tinggi Raharja yaitu sistem yang masih manual yang tidak terupdate dengan sendirinya, kurang optima, dan sistem yang masih bersifat lokal . Untuk memecahkan masalah dilakukan dengan metode analisa sistem dengan menggunakan metode UML (Unified Modeling Language) dan perancangan menggunakan yii framework. Alternatif pemecahan masalahnya adalah Viewboard Kepala Jurusan (VIKA), sebuah sistem pengecekan mahasiswa layak KKP online sehingga memudahkan kepala jurusan dalam pengecekan serta sistem yang sudah terintegrasi dan tidak perlu selalu di update yang dirancang dengan menggunakan yii adalah framework pemrograman umum web yang bisa dipakai untuk mengembangkan semua jenis aplikasi web. Diharapkan dengan adanya penelitian ini dapat memudahkan proses pengecekan mahasiswa layak KKP dan mampu meningkatkan mutu kegiatan perkuliahan pada Perguruan Tinggi Raharja.Kata Kunci: Pengecekan, OJRS+, KKP, VIKA, Yii Framework.