Miracle-dz/UniFAR-FTUs huggingface dataset:
Correlating the Ambient Conditions and Performance Indicators of the LoRaWAN via Surrogate Gaussian Process-Based Bidirectional LSTM Stacked Autoencoder

LoRa’s biggest advantage is its flexibility, which is the ability to increase or decrease data rate and range while decreasing or increasing sensitivity. Whenever propagation conditions change frequently, this function allows the spreading factor to be modified accordingly. Despite their efficiency and scalability, adaptive data rate algorithms ignore and fail to factor in the complex correlation between ambient weather parameters influencing the communication channel design. In this research, a Bayesian surrogate Gaussian process-based bidirectional LSTM stacked autoencoder model (BSGP-BLSTM_SAE) is proposed to estimate the channel performance indicators such as received signal strength indicator (RSSI) and signal-to-noise ratio (SNR) and to determine the correlation between the ambient weather conditions and performance indicators for the LoRaWAN network. Bayesian optimization algorithm has been used to optimize the hyper-parameters of the developed model. A LoRaWAN experimental multivariate time series dataset has been used for the evaluation of the developed model, which upon testing and validation produces high accuracy in predicting the channel performance indicators and ambient conditions of the experimental LoRaWAN network. The mean absolute error of the developed model was around 0.45. Thus, the proposed model can predict the link performance indicators and thereby assist in real-time optimization of the transmission parameters to enhance the network performance in LoRaWAN-based systems at different ambient conditions.
Diagnosis of Tularemia in a University Hospital in Turkey - 11-Year Evaluation

Objective: Francisella tularensis is a gram-negative coccobacillus and is the causative agent of tularemia, which is endemic in our country. The most common clinical form in Turkey is the oropharyngeal form. Sensitive lymphadenopathy is the most important finding, and fever, fatigue, and muscle and joint pain may occur in all clinical forms. Rodents such as rabbits, mice, and squirrels are the main reservoirs for humans, and the transmission is through contact with infected animal secretions and organs, contaminated water, and food. This study aimed to examine the socio-demographic, epidemiological, and clinical features of cases diagnosed with tularemia. Materials and Methods: Among the 583 patients whose serum samples were sent with a preliminary diagnosis of tularemia between 2011 and 2021, tularemia microagglutination test result (MAT) ≥1/160 titer, 18 years and older cases were included in the study. Results: A total of 24 tularemia cases were detected, with a mean age of 43.3±17 years, 10 (41.7%) were male, and 14 (58.3%) were female. The most common symptoms and findings among the cases were lymphadenopathy (LAP) (95.8%), fatigue (66.7%), sore throat, and high fever (58.3%), and the most common epidemiological history was living in a rural area (91.7%) and dealing with animal husbandry (66.7%), and 18 (75%) cases were referred to as oropharyngeal tularemia. More than half of the cases were detected between October and March. Conclusion: Tularemia is one of the endemic diseases in our country, and the epidemiological history should be taken carefully and kept in mind in the differential diagnosis of lymphadenopathy. Since it is the first tularemia study conducted in Malatya, it shows the epidemiological characteristics of the region.
Steady streaming from an oblate spheroid due to vibrations along its axis

Steady (acoustic) streaming around a rigid oblate spheroid is studied in the incompressible limit when the fluid medium and the particle are in a small-amplitude high-frequency relative oscillatory motion along the symmetry axis of the spheroid. The inner (inside the thin Stokes shear-wave layer) and outer streaming patterns are analysed. A solution for the outer streaming is obtained analytically for small Reynolds numbers. At large Reynolds numbers, a boundary-layer consideration is carried out. Steady streaming in the disk limit, as approached within the family of oblate spheroids, is systematically investigated in the large Reynolds number case, and qualitative implications for shapes other than oblate spheroidal are discussed.
Robust stability and performance of linear time-varying systems in polytopic domains

A sufficient condition to assess the stability of linear time-varying systems in polytopic domains is given in this paper. This condition is written as a feasibility test of linear matrix inequalities expressed at the polytope vertices and taking bounds on the time-derivatives of the system parameters into account. Differently from other techniques in the literature, there is no need of gridding procedures on the parameter space neither restrictive assumptions on the uncertainty structure. The proposed test can be solved in polynomial time yielding as solution a parameter dependent Lyapunov function that assures the system stability. Moreover, the results can be applied to systems with affine parameter uncertainty and can be easily extended to deal with guaranteed cost computation. Numerical examples show that the proposed condition can lead to less conservative evaluations of the stability domain and of the performance index for this class of systems when compared to the results based on the conventional quadratic stability or to the ones from similar techniques in the literature.
Stability of the triangular points in the elliptic restricted problem of three bodies

A perturbation scheme is used to study the stability of infinitesimal motions about the triangular points in the elliptic restricted problem of three bodies. Fourth-order analytical expressions for the transition curves that separate stable from unstable orbits in the /z-e plane are given. These power series are recast into rational fractions to extend their validity to larger values of eccentricity, e. ANBY3 studied the linear stability of the triangular points numerically using Floquet theory. He presented transition curves that separate the stable from the unstable orbits in the ju-e plane (JJL is the ratio of the smaller primary to the sum of the masses of the two primaries, and e is the eccentricity of the primaries7 orbit) . These curves intersect the JJL axis at AIO and /z&, where jua = 0.03852 is the limiting value of IJL for stable orbits in the circular case, and Hb — 0.02859 is the value of IJL such that one of the periods of motion about the triangular points is exactly twice the period of the orbit of the primaries in the circular case. Bennet2 obtained a first-order analytical expression for the transition curves near jjib using an analytical technique for determination of characteristic exponents. Alfriend and Rand1 obtained second-order analytical expressions for the transition curves at ju a and /z& using the method of multiple scales.5"7 In this paper, we use a perturbation technique to determine fourth-order analytical expressions for the transition curves. We use this technique rather than the method of multiple scales because we are interested in determining the transition curves only. The amount of algebra involved is considerably less than that required if we use the method of multiple scales because the latter provides the solution in the whole n~e plane. The expansions obtained here are recast into rational fractions8 to extend their validity to larger values of e.
Tenacious myths about cosmological perturbations larger than the horizon size

We review the linear perturbation theory of the Einstein--de Sitter (k=0, Friedmann) big-bang cosmology in synchronous gauge, taking particular care to distinguish physical perturbations, which are locally measurable, from pure-gauge perturbations, which correspond to an unperturbed spacetime written in gauge-perturbed coordinates. Some new results are obtained about the growth of physical perturbations at early times, while they are still outside their horizon; and some commonly accepted rules for estimating the growth and decay of perturbations are shown to be false. Source terms corresponding to inhomogeneous perturbations in the equation of state (or, equivalently, to isothermal perturbations) are next included: we calculate the density perturbations that are induced, including both pressure terms and (higher-order) pressure-gradient terms. Here also, some uncritical beliefs are shown to be incorrect.
Stagnation point flow in a vortex core

In an axisymmetric vortex which is in contact with a plane boundary perpendicular to the axis of symmetry, viscous effects will be significant in the vortex core and close to the boundary. Certain types of vortex core have been studied by Rott (1958, 1959) and Bellamy-Knights (1970, 1971), neglecting viscous effects near the boundary. The boundary layer region away from the axis of symmetry has been studied by Bellamy-Knights (1974). On the boundary and near the axis of symmetry, these two viscous regions will interact. This paper sets out to unify the flows treated by Bellamy-Knights (1971, 1974), by obtaining similarity equations valid in this interaction region, which tend asymptotically to the boundary layer equations with increasing radius and also tend to the core equations with increasing axial distance from the boundary. An exact solution of the unsteady, viscous, axisymmetric Navier–Stokes equations for an incompressible fluid, relevant to the core and interaction regions, is found as a special case of the solution of the general equations using a certain separation of variables. This reduces the Navier–Stokes equations to two coupled ordinary differential equations which are solved numerically. The resulting solutions can be used to model the conditions existing at the central core of a tornado vortex. The direction of axial flow in such vortices has long been a matter of some controversy, there being observational evidence for both directions. The solutions described here have the interesting property that either is possible depending on the value of ? , a parameter proportional to the angular velocity external to the boundary layer. In addition, in some circumstances, the existence of an axial stagnation point aloft is suggested. DOI: 10.1111/j.2153-3490.1975. tb01678.x
Flexible Bivariate INAR(1) Processes Using Copulas

Multivariate count time series data occur in many different disciplines. The class of INteger-valued AutoRegressive (INAR) processes has the great advantage to consider explicitly both the discreteness and autocorrelation characterizing this type of data. Moreover, extensions of the simple INAR(1) model to the multi-dimensional space make it possible to model more than one series simultaneously. However, existing models do not offer great flexibility for dependence modelling, allowing only for positive correlation. In this work, we consider a bivariate INAR(1) (BINAR(1)) process where cross-correlation is introduced through the use of copulas for the specification of the joint distribution of the innovations. We mainly emphasize on the parametric case that arises under the assumption of Poisson marginals. Other marginal distributions are also considered. A short application on a bivariate financial count series illustrates the model.
RNAseq-Based Working Model for Transcriptional Regulation of Crosstalk between Simultaneous Abiotic UV-B and Biotic Stresses in Plants

Plants adjust their secondary metabolism by altering the expression of corresponding genes to cope with both abiotic and biotic stresses. In the case of UV-B radiation, plants produce protective flavonoids; however, this reaction is impeded during pattern-triggered immunity (PTI) induced by pathogens. Pathogen attack can be mimicked by the application of microbial associated molecular patterns (e.g., flg22) to study crosstalk between PTI and UV-B-induced signaling pathways. Switching from Arabidopsis cell cultures to in planta studies, we analyzed whole transcriptome changes to gain a deeper insight into crosstalk regulation. We performed a comparative transcriptomic analysis by RNAseq with four distinct mRNA libraries and identified 10778, 13620, and 11294 genes, which were differentially expressed after flg22, UV-B, and stress co-treatment, respectively. Focusing on genes being either co-regulated with the UV-B inducible marker gene chalcone synthase CHS or the flg22 inducible marker gene FRK1 identified a large set of transcription factors from diverse families, such as MYB, WRKY, or NAC. These data provide a global view of transcriptomic reprogramming during this crosstalk and constitute a valuable dataset for further deciphering the underlying regulatory mechanism(s), which appear to be much more complex than previously anticipated. The possible involvement of MBW complexes in this context is discussed.
Nonlocal Continuum Field Theories

1. Motion and Deformation. - 2. Stress. - 3. Constitutive Axioms. - 4. Nonlocal Electromagnetic Theory. - 5. Constitutive Equations of Memory-Dependent Nonlocal Electromagnetic Elastic Solids. - 6. Nonlocal Linear Elasticity. - 7. Nonlocal Fluid Dynamics. - 8. Nonlocal Linear Electromagnetic Theory. - 9. Memory-Dependent Nonlocal Thermoelastic Solids. - 10. Memory-Dependent Nonlocal Fluids. - 11. Memory-Dependent Nonlocal Electromagnetic Elastic Solids. - 12. Memory-Dependent Nonlocal Electromagnetic Thermofluids. - 13. Nonlocal Microcontinua. - 14. Memory-Dependent Nonlocal Micropolar Electromagnetic Elastic Solids. - 15. Nonlocal Continuum Theory of Liquid Crystals.
7A11 - Laser induced emission of electrons, ions, and X rays from solid targets

We have first studied the spatial distribution of electrons and ions emitted from a solid target when hit by a focused, Q -switched laser beam. The particle emission is highly anisotropic. In a second experiment we have analyzed the ion energy for various targets such as beryllium, carbon, and molybdenum. For each target element, evidence for multicharged ions has been shown as a function of laser intensity. With a laser flux at the target surface of 6 \times 10^{10} W/cm2, the maximum ion energy obtained is about 2 keV. Finally, we have shown that particle emission is accompanied by X-ray emission.
Dyadic Data Analysis

neighbors, classification and regression trees (six pages), and neural networks (17 pages). The mechanics of the latter are adequately described, but there is too much emphasis on arithmetic, and little effort is made to intuitively justify the prediction process. At the end of the chapter, there is one paragraph on multiple regression analysis and one sentence on logistic regression. A major disappointment to me was the almost exclusive reliance in the examples on a rather old automobile fuel efficiency dataset (there is one observation for a Datsun 1200 vehicle). I had hoped to see some real business applications. After a four page “Deployment” chapter, the book ends with a “Conclusions” chapter containing one large-scale example involving data on the incidence of diabetes among Pima Indians. Here we find histograms, box plots, a two-sample t test, some derived associative rules which I did not find overly insightful, and a brief summary of prediction results via neural networks. I think students coming out of an undergraduate regression course could do a fine job of analyzing these data without resorting to the bells and whistles of data mining. And once again, where are the business applications? Although the text does give a brief snapshot of the subject, it is lacking in detail, applications, and opportunities for practice. Someone considering becoming involved in a data mining project or teaching an introductory course in the subject would be advised to learn much more than what MSD offers. Good information sources are the much more ambitious books by Hastie, Tibshirani, and Friedman (2001) (the best-selling Springer statistics book ever, thanks to purchases by those outside our discipline) and Bishop (2006).
Resonant Ion Pair Formation in Electron Collisions with Ground State Molecular Ions

Resonant ion pair formation from collisions of electrons with ground state diatomic molecular ions has been observed and absolute cross sections measured. The cross section for HD+ is characterized by an abrupt threshold at 1.9 eV and 14 resolved peaks in the range of energies 0 less than or equal to E less than or equal to 14 eV. The dominant mechanism responsible fbr the structures appears to be resonant capture and stabilization, modified by two-channel quantum interference. Data on HF+ show structure correlated with photoionization of HF and with dissociative recombination of electrons with this ion.
Invariant curves near Hamiltonian–Hopf bifurcations of four-dimensional symplectic maps

In this paper, we give a numerical description of an extended neighbourhood of a fixed point of a symplectic map undergoing an irrational transition from linear stability to complex instability, i.e. the so-called Hamiltonian–Hopf bifurcation. We have considered both the direct and inverse cases.This study is based on numerical computation of the Lyapunov families of invariant curves near the fixed point. We show how these families, jointly with their invariant manifolds and the invariant manifolds of the fixed point, organize the phase space around the bifurcation.
Free oscillations of near‐surface bubbles as a source of the underwater noise of rain

A bubble that is oscillating with a small amplitude may be thought of as a damped, undriven harmonic oscillator. If the bubble is near a free surface, it may be considered as a simple acoustic source close to a pressure release boundary and will therefore radiate as a dipole. It has been shown in a previous paper [Pumphrey et al., J. Acoust. Soc. Am. 85, 1518–1526 (1989)] that this mechanism is the major cause of the sound produced by rain and probably makes a contribution to the Knudsen spectrum of ambient noise in the ocean. Experimental results are presented for such freely oscillating bubbles, mostly entrained by drop impacts, which show that they have the resonance frequencies and damping constants predicted by theory. The presence of the free surface affects these values to a certain extent. The radiation pattern was measured and was shown to be a dipole, as predicted. Calculations of the amplitude of the bubble oscillation indicate that it is small, confirming that the linear approximation is valid.
Phenomenological Kinetics of Real Gas-Adsorption-Systems: Isothermal Kinetics and Kinetics of Thermodesorption

Abstract All adsorption systems which have to deal with technology and environment are systems which are not in equilibrium. They are only on their way to achieving a certain adsorption equilibrium. Therefore, knowledge of the time evolution of adsorption systems should be of fundamental importance. However, the overwhelming majority of the published papers report on experimental and theoretical studies of adsorption equilibria. This is probably why the theories of adsorption equilibria are at present much more advanced than the theories of time evolution of non-equilibrium adsorption systems. The theories of the kinetics of gas adsorption/ desorption on/from flat solid surfaces provide a very impressive illustration. On both the experimental and theoretical side, one finds a level far behind that characterizing current studies of adsorption equilibria. One can still observe controversies concerning the fundamentals of adsorption/desorption kinetics. The present review reports on the most recent achievements in the theoretical description of both isothermal adsorption kinetics and kinetics of thermodesorption, achieved by applying the Statistical Rate Theory.
COMPACTNESS RESULTS FOR TRANSPORT EQUATIONS AND APPLICATIONS

The goal of this paper is to give a systematic analysis of compactness properties for transport equations with general boundary conditions where an abstract boundary operator relates the incoming and outgoing fluxes. The analysis involves two parameters: The velocity measure and the collision operator. Hence, for a large class of (velocity) measures and under appropriate assumptions on scattering operators compactness results are obtained. Using the positivity (in the lattice sense) and the comparison arguments by Dodds–Fremlin, their converses are derived, and necessary conditions for some remainder term of the Dyson–Phillips expansion to be compact are given. Our results are independent of the properties of the boundary operators and play a crucial role in the understanding of the time asymptotic structure of evolution transport problems. Also, although solutions of transport equations propagate singularities (due to the hyperbolic nature of the operator), they bring the regularity in the variable space (regardless of the boundary operator). We end the paper by applying the obtained results to discuss the existence of solutions to a nonlinear boundary value problem and to describe in detail the various essential spectra of transport operators with abstract boundary conditions.
Some impact of pollutants on the development and optical properties of stratocumulus clouds

Two major recent field programmes—the European Cloud Radiation Experiment (EUCREX) and the Aerosol Characterization Experiment II (ACE‐2)‐have extensively analysed the dynamical, microphysical and radiative attributes of stratocumulus clouds contaminated by continental air. Although an extensive set of dynamical and microphysical data are now available, there are no accounts of any matching theoretical modelling studies. To fully understand and numerically model the interplay between the dynamics, microphysics, radiative and chemical properties of the two clouds chosen for our case‐studies would require a full three‐dimensional large‐eddy simulation (LES) model coupled to a full‐size resolving microphysical model where the computational costs would be prohibitive. In this study we have ‘optimized’ the classic Kessler parametrization scheme so that it is effectively able to distinguish between clean and contaminated clouds. We perform LES runs with the optimized scheme to study the morphology and the dynamics of the clouds and then use a second one‐dimensional microphysical parcel model run with identical environmental conditions to study the effects of pollution on the clouds as well as the droplet spectral evolution. This procedure yields extremely good agreement with observations at modest computational expense. It is shown that nitric acid (HNO3) vapour in the parts per billion by volume (p.p.b.v.) range affects cloud formation by increasing the number of cloud droplets and decreasing the mean size compared to an acid‐free simulation. The effects of HNO3 contamination on the EUCREX case‐study is evident owing to the proximity of this cloud to sources of air pollutants. With 10 p.p.b.v. of HNO3, we are able to achieve good agreement with the observations of the droplet effective radii as well as with observations of the optical‐depth variation. For the ACE‐2 cloud which formed further away from sources of pollutants, even on a typical ‘polluted’ day when the ambient HNO3 was ∼5 parts per trillion by volume, the drop concentration was found to be insensitive to changes in the HNO3.