cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Robust all-electrical topological valley filtering using monolayer 2D-Xenes
Creators: name: Jana, Koustav
name: Muralidharan, Bhaskaran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a realizable device design for an all-electrical robust valley filter that utilizes spin protected topological interface states hosted on monolayer 2D-Xene materials with large intrinsic spin-orbit coupling. In contrast with conventional quantum spin-Hall edge states localized around the $X$-points, the interface states appearing at the domain wall between topologically distinct phases are either from the $K$ or $K^{'}$ points, making them suitable prospects for serving as valley-polarized channels. We show that the presence of a large band-gap quantum spin Hall effect enables the spatial separation of the spin-valley locked helical interface states with the valley states being protected by spin conservation, leading to a robustness against short-range non-magnetic disorder. By adopting the scattering matrix formalism on a suitably designed device structure, valley-resolved transport in the presence of non-magnetic short-range disorder for different 2D-Xene materials is also analyzed in detail. Our numerical simulations confirm the role of spin-orbit coupling in achieving an improved valley filter performance with a perfect quantum of conductance attributed to the topologically protected interface states. Our analysis further elaborates clearly the right choice of material, device geometry and other factors that need to be considered while designing an optimized valleytronic filter device.
description: 11 pages, 7 figures, 2 tables. Comments welcome
Holography of time machines
Creators: name: Emparan, Roberto
name: Tomašević, Marija
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use holography to examine the response of interacting quantum fields to the appearance of closed timelike curves in a dynamically evolving background that initially does not contain them. For this purpose, we study a family of two-dimensional spacetimes that model very broad classes of wormhole time machines. The behavior of strongly coupled conformal theories in these spacetimes is then holographically described by three-dimensional AdS bulk geometries that we explicitly construct. The dual bulk spacetime is free from any divergences, but splits into two disconnected components, without and with CTCs, which are joined only through the boundary; then, passages across the chronology horizon are impossible for any field excitations. In dual terms, the strong self-interaction of the CFT decouples the pathological part from the rest of the spacetime. We also find that entangling the CFTs in two separate time machines connects them through a traversable bulk wormhole. Nevertheless, any entanglement-assisted chronology violations will be prevented by quantum bulk corrections, i.e., subleading 1/N effects, again without needing any gravitational backreaction of the CFT. We are led to speculate that chronology may be protected without involving Planck scale physics.
description: 31 pages, 3 figures. v2: 32 pages, 5 figures; substantially improved discussion and analysis. v3: 33 pages, 5 figures; revised intro. Matches published version
Coherence of absolute integral closures
Creators: name: Patankar, Shravan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13D22, 13A35, 13E15

description: We prove that the absolute integral closure $R^{+}$ of an equicharacteristic zero noetherian complete local domain $R$ is not coherent, provided $\dim(R)\geq 2$. As a corollary, we give an elementary proof of the mixed characteristic version of the result due to Asgharzadeh and extend it to dimension $3$. Furthermore, we apply the methods of Aberbach and Hochster used to prove the positive characteristic version of this result to study F-coherent rings and our work naturally suggests a mixed characteristic analogue of a result of Smith.
description: 15 pages. No change to the statements of the main theorems, other major revisions, additions, and error corrections throughout. An earlier remark is expanded into an entire new section 5. Comments welcome!
Masking Neural Networks Using Reachability Graphs to Predict Process Events
Creators: name: Theis, Julian
name: Darabi, Houshang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Decay Replay Mining is a deep learning method that utilizes process model notations to predict the next event. However, this method does not intertwine the neural network with the structure of the process model to its full extent. This paper proposes an approach to further interlock the process model of Decay Replay Mining with its neural network for next event prediction. The approach uses a masking layer which is initialized based on the reachability graph of the process model. Additionally, modifications to the neural network architecture are proposed to increase the predictive performance. Experimental results demonstrate the value of the approach and underscore the importance of discovering precise and generalized process models.
Optimal Solving of Constrained Path-Planning Problems with Graph Convolutional Networks and Optimized Tree Search
Creators: name: Osanlou, Kevin
name: Bursuc, Andrei
name: Guettier, Christophe
name: Cazenave, Tristan
name: Jacopin, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Deep learning-based methods are growing prominence for planning purposes. In this paper, we present a hybrid planner that combines a graph machine learning model and an optimal solver based on branch and bound tree search for path-planning tasks. More specifically, a graph neural network is used to assist the branch and bound algorithm in handling constraints associated with a desired solution path. There are multiple downstream practical applications, such as Autonomous Unmanned Ground Vehicles (AUGV), typically deployed in disaster relief or search and rescue operations. In off-road environments, AUGVs must dynamically optimize a source-destination path under various operational constraints, out of which several are difficult to predict in advance and need to be addressed online. We conduct experiments on realistic scenarios and show that graph neural network support enables substantial speedup and smoother scaling to harder path-planning problems. Additionally, information provided by the graph neural network enables the approach to outperform problem-specific handcrafted heuristics, highlighting the potential graph neural networks hold for path-planning tasks.
description: Published as a conference paper at IROS 2019
Dissipative dynamics in open XXZ Richardson-Gaudin models
Creators: name: Claeys, Pieter W.
name: Lamacraft, Austen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In specific open systems with collective dissipation the Liouvillian can be mapped to a non-Hermitian Hamiltonian. We here consider such a system where the Liouvillian is mapped to an XXZ Richardson-Gaudin integrable model and detail its exact Bethe ansatz solution. While no longer Hermitian, the Hamiltonian is pseudo-Hermitian/PT-symmetric, and as the strength of the coupling to the environment is increased the spectrum in a fixed symmetry sector changes from a broken pseudo-Hermitian phase with complex conjugate eigenvalues to a pseudo-Hermitian phase with real eigenvalues, passing through a series of exceptional points and associated dissipative quantum phase transitions. The homogeneous limit supports a nontrivial steady state, and away from this limit this state gives rise to a slow logarithmic growth of the decay rate (spectral gap) with system size. Using the exact solution, it is furthermore shown how at large coupling strengths the ratio of the imaginary to the real part of the eigenvalues becomes approximately quantized in the remaining symmetry sectors.
description: 7+4 pages
Adaptive-Model Based Self-Tuning Generalized Predictive Control of a Biodiesel Reactor
Creators: name: HO, Yong Kuen
Publisher: name: figshare
Year: 2017
Subjects: subject: 90407 Process Control and Simulation
subject: FOS: Chemical engineering

description: Traditionally, the Recursive Least Squares (RLS) algorithm was used in the Generalized Predictive Control (GPC) framework solely for model adaptation purposes. In this work, the RLS algorithm was extended to also cater for self-tuning of the controller. Specifically, the analytical expressions proposed by Shridhar and Cooper (1997b) for offline tuning of the move suppression weight was deployed for online tuning. This new combination, denoted as the Adaptive-Model Based Self-Tuning Generalized Predictive Control (AS-GPC), contains both model adaptation and self-tuning capabilities within the same controller structure. Several RLS algorithms were screened and the Variable Forgetting Factor Recursive Least Squares (VFF-RLS) algorithm was selected to capture the dynamics of the process online for the purpose of model adaptation in the controller. Based on the evolution of the process dynamics given by the VFF-RLS algorithm in the form of First Order Plus Dead Time (FOPDT) model parameters, the move suppression weight for the AS-GPC was recalculated automatically at every time step based on the analytical tuning expressions. The proposed control scheme was tested and implemented on a validated mechanistic transesterification process, known for inherent nonlinearities. Closed loop simulation of the transesterification reactor revealed the superiority of the proposed control scheme in terms of servo and regulatory control as compared to other variants of advanced controllers and the conventional PID controller. Not only is the proposed control scheme adept in tackling issues of process nonlinearities, it also minimizes user involvement in the tuning of the controller and consequently reduces process interruptions.
Time-reversal-broken Weyl semimetal in the Hofstadter regime
Creators: name: Abdulla, Faruk
name: Das, Ankur
name: Rao, Sumathi
name: Murthy, Ganpathy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the phase diagram for a lattice model of a time-reversal-broken three-dimensional Weyl semimetal (WSM) in an orbital magnetic field $B$ with a flux of $p/q$ per unit cell ($0\le p \le q-1$), with minimal crystalline symmetry. We find several interesting phases: (i) WSM phases with $2q$, $4q$, $6q$, and $8q$ Weyl nodes and corresponding surface Fermi arcs, (ii) a layered Chern insulating (LCI) phase, gapped in the bulk, but with gapless surface states, (iii) a phase in which some bulk bands are gapless with Weyl nodes, coexisting with others that are gapped but topologically nontrivial, adiabatically connected to an LCI phase, (iv) a new gapped trivially insulating phase (I$'$) with (non-topological) counter-propagating surface states, which could be gapped out in the absence of crystal symmetries. Importantly, we are able to obtain the phase boundaries analytically for all $p,q$. Analyzing the gaps for $p=1$ and very large $q$ enables us to smoothly take the zero-field limit, even though the phase diagrams look ostensibly very different for $q=1, B=0$, and $q\to\infty, B\to 0$.
description: 31 pages, 13 figures
Genuine multipartite entanglement measure
Creators: name: Guo, Yu
name: Jia, Yanping
name: Li, Xinping
name: Huang, Lizhong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantifying genuine entanglement is a crucial task in quantum information theory.In this work, we give an approach of constituting genuine $m$-partite entanglement measures from any bipartite entanglement and any $k$-partite entanglement measure, $3\leq k
description: 19 pages, 7 figurs. Minor errors in the 5th version are corrected. Comments are welcome
Modulation of electronic and thermal proprieties of TaMoS$_2$ by controlling the repulsive interaction between Ta dopant atoms
Creators: name: Abdullah, Nzar Rauf
name: Abdullah, Botan Jawdat
name: Rashid, Hunar Omar
name: Tang, Chi-Shung
name: Gudmundsson, Vidar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically study the electronic and the thermal characteristics of Tantalum, Ta, doped Molybdenum disulfide, MoS$_2$, using density functional theory. It has been shown that the MoS$_2$ monolayer is not a good material for thermoelectric devices due to its relatively large band gap. We find that a Ta doped MoS$_2$ forming a TaMoS$_2$ monolayer can be useful for thermoelectric devices. The particular attention of this work is paid to the interaction effect between the Ta atoms in the MoS$_2$ structure. We find that the interaction type is repulsive. It introduces an asymmetry in the density of states, DOS, reducing the band gap. In the presence of a strong repulsive interaction of Ta-Ta atoms, new states in the DOS around the Fermi energy are found leading to a reduction of the band gap. Consequently, a high Seebeck coefficient and figure of merit are seen over a wide range of energy around the Fermi energy. In contrast, a small reduction of the band gap and a vanishing degeneracy of the valence and the conduction bands are observed for the case of a weak Ta-Ta repulsive interaction leading to less promising thermoelectric properties.
description: 7 pages, 7 figure
Estimation of elastic behaviors of metal components containing process induced porosity
Creators: name: Deng, Shiguang
name: Soderhjelm, Carl
name: Apelian, Diran
name: Suresh, Krishnan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Significant progress has been made for assessing the influence of porosity on the performance metrics for cast components through various modeling techniques. However, a computationally efficient framework to account for porosity with various shapes and sizes is still lacking. The main contribution of this work is to address this limitation. Specifically, a novel porosity sensitivity method is proposed, which integrates the merits of topological sensitivity and shape sensitivity. While topological sensitivity approximates the first order change on the quantity of interest when an infinitesimally small spherical pore is inserted into a dense (no pore) structure, shape sensitivity estimates the subsequent change in the quantity when the small pore boundary is continuously perturbed to resemble the geometry reconstructed from tomography characterization data. In this method, an exterior problem is solved to explicitly formulate pore stress and strain fields as functions of shape scaling parameters. By neglecting higher order pore-to-pore interaction terms, the influence of multiple pores can be estimated through a linear approximation. The proposed method is first studied on a benchmark example to establish the impact of different pore parameters on the estimation accuracy. The method is then applied onto case studies where the pore geometry is either from tomography reconstruction or computer-generated representations. Efficiency and accuracy of the method are finally demonstrated using a commercial 3D application. The proposed method can be extended to other manufacturing (e.g., additive manufacturing) induced porosity problems.
Multi-Modal MRI Reconstruction Assisted with Spatial Alignment Network
Creators: name: Xuan, Kai
name: Xiang, Lei
name: Huang, Xiaoqian
name: Zhang, Lichi
name: Liao, Shu
name: Shen, Dinggang
name: Wang, Qian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In clinical practice, multi-modal magnetic resonance imaging (MRI) with different contrasts is usually acquired in a single study to assess different properties of the same region of interest in the human body. The whole acquisition process can be accelerated by having one or more modalities under-sampled in the $k$-space. Recent research has shown that, considering the redundancy between different modalities, a target MRI modality under-sampled in the $k$-space can be more efficiently reconstructed with a fully-sampled reference MRI modality. However, we find that the performance of the aforementioned multi-modal reconstruction can be negatively affected by subtle spatial misalignment between different modalities, which is actually common in clinical practice. In this paper, we improve the quality of multi-modal reconstruction by compensating for such spatial misalignment with a spatial alignment network. First, our spatial alignment network estimates the displacement between the fully-sampled reference and the under-sampled target images, and warps the reference image accordingly. Then, the aligned fully-sampled reference image joins the multi-modal reconstruction of the under-sampled target image. Also, considering the contrast difference between the target and reference images, we have designed a cross-modality-synthesis-based registration loss in combination with the reconstruction loss, to jointly train the spatial alignment network and the reconstruction network. The experiments on both clinical MRI and multi-coil $k$-space raw data demonstrate the superiority and robustness of the multi-modal MRI reconstruction empowered with our spatial alignment network. Our code is publicly available at \url{https://github.com/woxuankai/SpatialAlignmentNetwork}.
description: Final version, IEEE Transactions on Medical Imaging, code available at \url{https://github.com/woxuankai/SpatialAlignmentNetwork}
Fundamental limits in Bayesian thermometry and attainability via adaptive strategies
Creators: name: Mehboudi, Mohammad
name: Jørgensen, Mathias R.
name: Seah, Stella
name: Brask, Jonatan B.
name: Kołodyński, Jan
name: Perarnau-Llobet, Martí
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We investigate the limits of thermometry using quantum probes at thermal equilibrium within the Bayesian approach. We consider the possibility of engineering interactions between the probes in order to enhance their sensitivity, as well as feedback during the measurement process, i.e., adaptive protocols. On the one hand, we obtain an ultimate bound on thermometry precision in the Bayesian setting, valid for arbitrary interactions and measurement schemes, which lower bounds the error with a quadratic (Heisenberg-like) scaling with the number of probes. We develop a simple adaptive strategy that can saturate this limit. On the other hand, we derive a no-go theorem for non-adaptive protocols that does not allow for better than linear (shot-noise-like) scaling even if one has unlimited control over the probes, namely access to arbitrary many-body interactions.
description: 14 pages with appendices
title: Ð­ÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ°Ñ Ð¾ÑÐµÐ½ÐºÐ° Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¹ Ð² Ð¿ÑÐ¾ÐµÐºÑ ÑÐµÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐµÐ¿Ð»Ð¾ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð±Ð»Ð¾ÑÐ½Ð¾-Ð¼Ð¾Ð´ÑÐ»ÑÐ½ÑÑ ÐºÐ¾ÑÐµÐ»ÑÐ½ÑÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Economic assessment of investments in the project of reconstruction of the heat supply system based on block - modular boiler houses
Creators: name: ÐÑÑÐ½Ð´Ð¾Ð², ÐÐ°Ð´Ð¶Ð¸
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ°Ñ Ð¾ÑÐµÐ½ÐºÐ° Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¹ Ð² Ð¿ÑÐ¾ÐµÐºÑ ÑÐµÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐµÐ¿Ð»Ð¾ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð±Ð»Ð¾ÑÐ½Ð¾-Ð¼Ð¾Ð´ÑÐ»ÑÐ½ÑÑ ÐºÐ¾ÑÐµÐ»ÑÐ½ÑÑ
economic assessment of investments in the project of reconstruction of the heat supply system based on block - modular boiler houses

description: Ð¦ÐµÐ»ÑÑ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð¾ÑÐµÐ½ÐºÐ° ÑÐµÐ»ÐµÑÐ¾Ð¾Ð±ÑÐ°Ð·Ð½Ð¾ÑÑÐ¸ Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¹ Ð² ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ðµ Ð±Ð»Ð¾ÑÐ½Ð¾-Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾Ð¹ ÐºÐ¾ÑÐµÐ»ÑÐ½Ð¾Ð¹.ÐÐµÑÐµÑÐµÐ½Ñ Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° (Ñ ÑÐºÐ°Ð·Ð°Ð½Ð¸ÐµÐ¼ Ð¾Ð±ÑÐ·Ð°ÑÐµÐ»ÑÐ½ÑÑ ÑÐµÑÑÐµÐ¶ÐµÐ¹): ÑÐ¼ÐµÑÐ½Ð°Ñ ÑÑÐ¾Ð¸Ð¼Ð¾ÑÑÑ Ð±Ð»Ð¾ÑÐ½Ð¾-Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð¾Ð¹ ÐºÐ¾ÑÐµÐ»ÑÐ½Ð¾Ð¹, ÑÐµÐ¿Ð»Ð¾Ð²Ð¾Ð¹ Ð³ÑÐ°ÑÐ¸Ðº ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐµÐ¿Ð»Ð¾ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ, ÑÐ¸Ð½Ð°Ð½ÑÐ¾Ð²Ð°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ°, Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÑ ÑÐ¸ÑÑÑÐ¹ Ð´Ð¸ÑÐºÐ¾Ð½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¹ Ð´Ð¾ÑÐ¾Ð´ Ð¾Ñ Ð½Ð¾ÑÐ¼Ñ Ð´Ð¸ÑÐºÐ¾Ð½ÑÐ°, Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÑ ÑÐ¸ÑÑÑÐ¹ Ð´Ð¸ÑÐºÐ¾Ð½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¹ Ð´Ð¾ÑÐ¾Ð´ Ð¾Ñ Ð¾Ð±ÑÐµÐ¼Ð° ÐºÐ°Ð¿Ð¸ÑÐ°Ð»ÑÐ½ÑÑ Ð²Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹. ÐÐ±Ð»Ð°ÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ â Ð´Ð»Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¹ Ð² ÑÑÐµÑÐµ ÑÐµÐ¿Ð»Ð¾ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ. ÐÐ°Ð´Ð°ÑÐ¸ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐµÑÐµÐ½Ñ, ÑÐµÐ»Ñ Ð´Ð¾ÑÑÐ¸Ð³Ð½ÑÑÐ°, Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð° Ð¾Ð±Ð»Ð°ÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð².
description: The purpose of this work is to assess the feasibility of investing in the creation of a block-modular boiler house. A list of graphic material (with mandatory drawings): the estimated cost of a block-modular boiler house, the thermal schedule of the heat supply system, the financial model of the investment project, the dependence of net discounted income on the discount rate, the dependence of net discounted income on the volume of capital investments.The scope of application of the results of the final qualification work is for organizations in the field of heat supply. The tasks of the final qualifying work have been solved, the goal has been achieved, the scope of application of the results has been determined.
Model of the thermoelectric properties of anisotropic organic semiconductors
Creators: name: Ihnatsenka, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A model of charge hopping transport that accounts for anisotropy of localized states and Coulomb interaction between charges is proposed. For the anisotropic localized states the degree of orientation relates exponentially to the ratio of conductivities in parallel and perpendicular directions, while the ratio of Seebeck coefficients stays nearly unaffected. However, the ratio of Seebeck coefficients increases if Coulomb interaction is screened stronger in a direction parallel to the predominant orientation of the localized states. This implies two different physical mechanisms responsible for the anisotropy of thermoelectric properties in the hopping regime: electronic state localization for conductivities, and screening for Seebeck coefficients. This provides explanation for recent experimental findings on tensile drawn and ribbed polymer films.
description: 7 pages, 4 figures
[Poster] Variability of Mid-Latitude Summertime Convection
Creators: name: Rasp, Stephan
Publisher: name: figshare
Year: 2017
Subjects: subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences

description: Poster for the "Future of Cumulus Parameterization" workshop in Delft, Netherland from 10-14 July 2017
Stephan RaspLMU Munich
Localization transition induced by programmable disorder
Creators: name: Filho, Jaime L. C. da C.
name: Izquierdo, Zoe Gonzalez
name: Saguia, Andreia
name: Albash, Tameem
name: Hen, Itay
name: Sarandy, Marcelo S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the occurrence of many-body localization (MBL) on a spin-1/2 transverse-field Ising model defined on a Chimera connectivity graph with random exchange interactions and longitudinal fields. We observe a transition from an ergodic phase to a non-thermal phase for individual energy eigenstates induced by a critical disorder strength for the Ising parameters. Our result follows from the analysis of both the mean half-system block entanglement and the energy level statistics. We identify the critical point associated with this transition using the maximum variance of the block entanglement over the disorder ensemble as a function of the disorder strength. The calculated energy density phase diagram shows the existence of a mobility edge in the energy spectrum. In terms of the energy level statistics, the system changes from the Gaussian orthogonal ensemble for weak disorder to a Poisson distribution limit for strong randomness, which implies localization behavior. We then realize the time-independent disordered Ising Hamiltonian experimentally using a reverse annealing quench-pause-quench protocol on a D-Wave 2000Q programmable quantum annealer. We characterize the transition from the thermal to the localized phase through magnetization measurements at the end of the annealing dynamics, and the results are compatible with our theoretical prediction for the critical point. However, the same behavior can be reproduced using a classical spin-vector Monte Carlo simulation, which suggests that genuine quantum signatures of the phase transition remain out of reach using this experimental platform and protocol.
description: 13 pages, 18 figures
IBMRC_rath_paper_2016.pdf
Creators: name: Rath Jairak
Publisher: name: figshare
Year: 2017
Subjects: subject: 150302 Business Information Systems
subject: FOS: Economics and business
subject: 150503 Marketing Management (incl. Strategy and Customer Relations)

description: The purpose of this research is to examine the factors associated with the quality of e-commerce websites that affect customer purchase intention in Thailand. The results of 2,151 valid responses received from all regions of Thailand reveal that the website quality for this region can be categorized into three components: 1) information security, 2) functionality & design, and 3) service quality. These factors show a significant impact on customer purchase intention and can be sorted according to priority as follows: 1) functionality & design, 2) information security, and 3) service quality. The findings will lead to the development of a strategy for the implementation of e-commerce website in Thailand.
Additional file 10 of Characterization and fine mapping of a new dwarf mutant in Brassica napus
Creators: name: Li, Xin
name: Xiang, Fujiang
name: Zhang, Wei
name: Yan, Jindong
name: Li, Xinmei
name: Zhong, Ming
name: Yang, Piao
name: Chen, Caiyan
name: Liu, Xuanming
name: Mao, Donghai
name: Zhao, Xiaoying
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 10: Figure S9. Plant internodes of WT (left), bnd2 (right) and their F1 hybrid (middle) at maturity.
Automation in biodiversity monitoring
Creators: name: Groom, Quentin
Publisher: name: figshare
Year: 2017
Subjects: subject: Computational Biology
subject: 60299 Ecology not elsewhere classified
subject: FOS: Biological sciences
subject: 69902 Global Change Biology

description: A 5 minute flash presentation to explain the value of even based datasets in the automation of biodiversity change forecasting.
title: ÐÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÑÐµÐ±Ð½Ð¾Ð¹ Ð¼Ð¾ÑÐ¸Ð²Ð°ÑÐ¸Ð¸ ÑÐ¾ÑÑÐ¸Ð¹ÑÐºÐ¸Ñ Ð¸ ÑÑÑÐºÐ¼ÐµÐ½ÑÐºÐ¸Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð²
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Features of educational motivation of Russian and Turkmen students
Creators: name: ÐÑÐ°ÐµÐ²Ð°, Ð¯Ð½ÑÐ»
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÑÑÐµÐ±Ð½Ð°Ñ Ð¼Ð¾ÑÐ¸Ð²Ð°ÑÐ¸Ñ
ÑÑÑÐ´ÐµÐ½ÑÑ
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Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½ÑÐ¹ Ð¿ÑÐ¾ÑÐµÑÑ
educational motivation
students
russian and turkmen students
educational process

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description: The work is devoted to the study of the peculiarities of educational motivation of Russian and Turkmen students of Peter the Great St. Petersburg Polytechnic University. The analysis and assessment of the level of educational motivation of students using a set of diagnostic techniques. The main features of the educational motivation of students from Russia and Turkmenistan, their similarities and differences are revealed. Significant differences in students learning motivation are described. Statistically significant correlations between the motivation of students from Russia and Turkmenistan, the attitude towards it are established.
Discovering Community Types in Open-Source: A Systematic Approach and Its Evaluation
Creators: name: Tamburri, Damian A.
name: Palomba, Fabio
name: Serebrenik, Alexander
name: Zaidman, Andy
Publisher: name: figshare
Year: 2017
Subjects: subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: The open-source phenomenon has reached considerable proportions to the point in which it is virtually impossible to nd large applications that do not rely on open-source components. However, such grand adoption may turn into a risk if the community and organisational aspects driving open-source work (e.g., contribution policy or release schemes) are left implicit and untracked. We advocate the explicit study and automated support of such aspects and propose Yoshi (Yielding Open-Source Health Information), a tool able to map open-source communities onto known organisational and social structure types (e.g., Formal Communities characterized by a very formal community organisation). This mapping is bene cial since it allows (a) further investigation of community health using metrics from organisations research, (b) reuse of type-speci c best-practices from the same literature, and (c) diagnosis of organisational anti-patterns. We evaluated the tool in an empirical study involving 25 open-source communities hosted on GitHub. We evaluate (i) whether the metrics computed by Yoshi represent valid measures to characterise software communities, (ii) the extent to which the tool is able to correctly estimate the structure of a community, (iii) whether community smells (i.e., socio-technical anti-patterns) can be diagnosed using Yoshi’s typi cation, and (iv) whether such typi cation can help in understanding the health status of the repository. We conclude that the tool o ers a valuable basis to monitor key community traits behind open-source. We made the proposed tool publicly available and open-source.
Multiple classifier system for EEG signal classification with application to brain–computer interfaces
Creators: name: Ahangi, Amir
name: Mohammadi, Nima
name: Karamnejad, Mehdi
name: Ebrahimpour, Reza
name: Nasoor Bagheri
Publisher: name: figshare
Year: 2017
Subjects: Applied Computer Science

description: In this paper, we demonstrate the use of a
multiple classifier system for classification of electroencephalogram
(EEG) signals. The main purpose of this
paper is to apply several approaches to classify motor
imageries originating from the brain in a more robust
manner. For this study, dataset II from BCI competition III
was used. To extract features from the brain signal, discrete
wavelet transform decomposition was used. Then, several
classic classifiers were implemented to be utilized in the
multiple classifier system, which outperforms the reported
results of other proposed methods on the dataset. Also, a
variety of classifier combination methods along with
genetic algorithm feature selection were evaluated and
compared in order to diminish classification error. Our
results suggest that an ensemble system can be employed to
boost EEG classification accuracy.
Probability Estimation of Uncertain Process Trace Realizations
Creators: name: Pegoraro, Marco
name: Bakullari, Bianka
name: Uysal, Merih Seran
name: van der Aalst, Wil M. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Process mining is a scientific discipline that analyzes event data, often collected in databases called event logs. Recently, uncertain event logs have become of interest, which contain non-deterministic and stochastic event attributes that may represent many possible real-life scenarios. In this paper, we present a method to reliably estimate the probability of each of such scenarios, allowing their analysis. Experiments show that the probabilities calculated with our method closely match the true chances of occurrence of specific outcomes, enabling more trustworthy analyses on uncertain data.
description: 12 pages, 7 figures, 4 tables, 11 references
Additional file 11 of Characterization and fine mapping of a new dwarf mutant in Brassica napus
Creators: name: Li, Xin
name: Xiang, Fujiang
name: Zhang, Wei
name: Yan, Jindong
name: Li, Xinmei
name: Zhong, Ming
name: Yang, Piao
name: Chen, Caiyan
name: Liu, Xuanming
name: Mao, Donghai
name: Zhao, Xiaoying
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 11: Figure S10. Phenotype and trait inheritance of bnd2 in the cross population.
Enhanced electronic and optical responses of Nitrogen- or Boron-doped BeO monolayer: First principle computation
Creators: name: Abdullah, Nzar Rauf
name: Abdullah, Botan Jawdat
name: Rashid, Hunar Omar
name: Tang, Chi-Shung
name: Manolescu, Andrei
name: Gudmundsson, Vidar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work, the electronic and optical properties of a Nitrogen (N) or a Boron (B) doped BeO monolayer are investigated in the framework of density functional theory. It is known that the band gap of a BeO monolayer is large leading to poor material for optoelectronic devices in a wide range of energy. Using substitutional N or B dopant atoms, we find that the band gap can be tuned and the optical properties can be improved. In the N(B)-doped BeO monolayer, the Fermi energy slightly crosses the valence(conduction) band forming a degenerate semiconductor structure. The N or B atoms thus generate new states around the Fermi energy increasing the optical conductivity in the visible light region. Furthermore, the influences of dopant atoms on the electronic structure, the stability, the dispersion energy, the density of states, and optical properties such as the plasmon frequency, the excitation spectra, the dielectric functions, the static dielectric constant, and the electron energy loss function are discussed for different directions of polarizations for the incoming electric field.
description: 10 pages, 13 figures
Bright and dark states of two distant macrospins strongly coupled by phonons
Creators: name: An, Kyongmo
name: Kohno, Ryuhei
name: Litvinenko, Artem N.
name: Seeger, Rafael Lopes
name: Naletov, Vladimir V.
name: Vila, Laurent
name: de Loubens, Gregoire
name: Youssef, Jamal Ben
name: Vukadinovic, Nicolas
name: Bauer, Gerrit E. W.
name: Slavin, Andrei N.
name: Tiberkevich, Vasyl S.
name: Klein, Olivier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the collective dynamics of two distant magnets coherently coupled by acoustic phonons that are transmitted through an intercalated crystal. By tuning the ferromagnetic resonances of the two magnets to an acoustic resonance of the crystal, we control a coherent three levels system. We show that the parity of the phonon mode governs the nature of the indirect coupling between the magnets: the resonances with odd / even phonon modes correspond to out-of-phase / in-phase lattice displacements at the magnets, leading to bright / dark states in response to uniform microwave magnetic fields, respectively. The sample is a tri-layer garnet consisting of two thin magnetic layers epitaxially grown on both sides of a half-millimeter thick non-magnetic single crystal. In spite of the relatively weak magneto-elastic interaction, the long lifetimes of the magnon and phonon modes in the sample are the key to unveil this long range strong coupling. This demonstrates that garnets are a great platform to study multi-partite hybridization process between magnon and phonons at microwave frequencies.
description: 8 pages, 5 figures
Magnetorotational core collapse of possible GRB progenitors. IV. A wider range of progenitors
Creators: name: Obergaulinger, M.
name: Aloy, M. Á.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The final collapse of the cores of massive stars can lead to a wide variety of outcomes in terms of electromagnetic and kinetic energies, nucleosynthesis, and remnants. The connection of this wide spectrum of explosion and remnant types to the properties of the progenitors remains an open issue. Rotation and magnetic fields in Wolf-Rayet stars of subsolar metallicity may explain extreme events such as superluminous supernovae and gamma-ray bursts powered by proto-magnetars or collapsars. Continuing numerical studies of magnetorotational core collapse including detailed neutrino physics, we focus on progenitors with zero-age main-sequence masses in the range between 5 and 39 solar masses. The pre-collapse stars are one dimensional models employing prescriptions for the effects of rotation and magnetic fields. Eight of the ten stars we consider being the results of chemically homogeneous evolution due to enhanced rotational mixing (Aguilera-Dena et al. 2018). All but one of them produce explosions driven by neutrino heating (more likely for low mass progenitors up to 8 solar masses) and non-spherical flows or by magnetorotational stresses (more frequent above 26 solar masses). In most of them and for the one non-exploding model, ongoing accretion leads to black-hole formation. Rapid rotation makes a subsequent collapsar activity plausible. Models not forming black holes show proto-magnetar driven jets. Conditions for the formation of nickel are more favourable in magneto-rotationally driven models, though our rough estimates fall short of the requirements for extremely bright events if these are powered by radioactive decay. However, approximate light curves of our models suggest that a proto-magnetar or black hole spin-down may fuel luminous transients (with peak luminosities ~ 10^{43...44} erg).
description: 21 pages, 14 figures
YANGI  O'ZBEKISTONDA  AHOLI  IJTIMOIY HIMOYASINING USTUVOR YO'NALISHLARI.
Creators: name: Xolnazarova, Dildora
name: Ungarova, Iroda
Publisher: name: Zenodo
Year: 2024

description: Mazkur  maqolada yangi O‘zbekistonda  aholini  ijtimoiy  qo‘llab-quvvatlash  bo‘yicha  amaldagi  holat,  bajarilayotgan chora-tadbirlar mazmuni haqida fikr-mulohazalar bayon qilingan.
Novel split quality measures for stratified multilabel Cross Validation with application to large and sparse gene ontology datasets
Creators: name: Tiittanen, Henri
name: Holm, Liisa
name: Törönen, Petri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Genomics (q-bio.GN)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Multilabel learning is an important topic in machine learning research. Evaluating models in multilabel settings requires specific cross validation methods designed for multilabel data. In this article, we show that the most widely used cross validation split quality measures do not behave adequately with multilabel data that has strong class imbalance. We present improved measures and an algorithm, optisplit, for optimising cross validations splits. We present an extensive comparison of various types of cross validation methods in which we show that optisplit produces more even cross validation splits than the existing methods and that it is fast enough to be used on big Gene Ontology (GO) datasets.
description: 15 pages, 2 figures
The Konkaṇi Rāmāyaṇa
Creators: name: RODRIGUES, TENSING CARLOS
Publisher: name: figshare
Year: 2017
Subjects: subject: History
subject: Anthropology
subject: FOS: Sociology
subject: Archaeology
subject: Geography
subject: Sociology

description: Konkaṇi Rāmāyaṇa as found in the codices 771 and 772 in the Arquivo Distrital de Braga, Portugal, two of the three manuscripts that have now become popular as the Braga Codices. Though known for the last 65 years and widely referred to, still not much study has been done of the texts, except for A K Priolkar’s work on ‘Shri Krishna Charitra Katha’ from codex 773 and Rocky Miranda’s on ‘Adiparva’ from codex 772. [Miranda, 2011 : The Old Konkani Bharata, Vol 1 : Introduction] That is understandable; pages of the codices are un-numbered, many are missing or illegible and those existing often not in order, not only within a codex, but even between the codices – one has to search the page of one codex in another codex; and the handwriting is difficult to read. The information given here and this excerpt are based on the meticulous work done by Lordino Rodrigues in the late eighties. [Rodrigues, 1988 : Ramayannantlem Konknni Parva, Konkan Times, Divalli Ank, 1988] Though the text has been traditionally ascribed to some writer or the other, there is no irrefutable internal evidence to that effect. The codices 771 and 772 contain three sets of Rāmāyaṇa texts : codex 771 contains 1 parva describing the fight between Bharata and Mulakasur; the codex 772 contains 14 parvas and separately the story of Rāma’s divine origin in 6 chapters. The excerpt below is from the chapter 5 of the last set.
Dynamics of a drop floating in vapor of the same fluid
Creators: name: Benilov, E. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Evaporation of a liquid drop surrounded by either vapor of the same fluid, or vapor and air, is usually attributed to vapor diffusion -- which, however, does not apply to the former setting, as pure fluids do not diffuse. The present paper puts forward an additional mechanism, one that applies to both settings. It is shown that disparities between the drop and vapor in terms of their pressure and chemical potential give rise to a flow. Its direction depends on the vapor density and the drop's size. In undersaturated or saturated vapor, all drops evaporate -- but in oversaturated (yet thermodynamically stable) vapor, there exists a critical radius: smaller drops evaporate, larger drops act as centers of condensation and grow. The developed model is used to estimate the evaporation time of a drop floating in saturated vapor. It is shown that, if the vapor-to-liquid density ratio is small, so is the evaporative flux -- as a result, millimeter-sized water drops at temperatures lower than $70^{\circ}\mathrm{C}$ survive for days. If, however, the temperature is comparable (but not necessarily close) to its critical value, such drops evaporate within minutes. Micron-sized drops, in turn, evaporate within seconds for all temperatures between the triple and critical points.
When is a Genuine Multipartite Entanglement Measure Monogamous?
Creators: name: Guo, Yu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A crucial issue in quantum communication tasks is characterizing how quantum resources can be quantified and distributed over many parties. Consequently, entanglement has been explored extensively. However, the genuine entanglement still lacks of studying. There are few genuine multipartite entanglement measures and whether it is monogamous is unknown so far. In this work, we explore the complete monogamy of genuine multipartite entanglement measure (GMEM) for which, at first, we investigate a framework for unified/complete GMEM according to the unified/complete multipartite entanglement measure proposed in [Phys. Rev. A 101, 032301 (2020)]. We find a way of inducing unified/complete GMEM from any given unified/complete multipartite entanglement measure.It is shown that any unified GMEM is completely monogamous, and any complete GMEM that induced by some given complete multipartite entanglement measure is tightly complete monogamous whenever the given complete multipartite entanglement measure is tightly complete monogamous. In addition, the previous GMEMs are checked under this framework. It turns out that the genuinely multipartite concurrence is not a good candidate as a GMEM.
description: 12 pages. Several errors are corrected. Comments are welcome