Miracle-dz/UniFAR-FTUs huggingface dataset:
Prevalence of Venous Thromboembolism in Intensive Care Units: A Meta-Analysis

Objective: Venous thromboembolism (VTE) is a life threating complication in intensive care units (ICUs). This study aimed to pool the prevalence of VTE and examined the risk factors of VTE in intensive care patients worldwide. Methods: A systematic search in PubMed, EMBASE and Web of Science databases was performed. Studies reported that the data on the prevalence of VTE or relevant information were synthesized using a random-effects model. Results: A total of 42 studies reporting on 27,344 patients were included. The pooled prevalence of VTE was 10.0% (95% CI: 7.0–14.0%). Subgroup and metaregression analyses found that thromboprophylaxis strategy, simplified acute physiology score (SAPS II), age, study quality, sample size, malignancy, sex, spinal cord injury and injury severity score (ISS) moderated the prevalence of VTE in intensive care patients. Conclusions: The present meta-analysis revealed a high prevalence of VTE in critically ill patients. The risk factors of VTE included thromboprophylaxis strategy, SAPS II, age, malignancy, sex, spinal cord injury and ISS. Therefore, we need to pay more attention to high-risk populations of VTE in intensive care patients.
Unidirectional spin-wave channeling along magnetic domain walls of Bloch type

From the pioneering work of Winter [Phys. Rev. 124, 452 (1961)], a magnetic domain wall of Bloch type is known to host a special wall-bound spin-wave mode, which corresponds to spin-waves being channeled along the magnetic texture. Using micromagnetic simulations, we investigate spin-waves travelling inside Bloch walls formed in thin magnetic media with perpendicular-to-plane magnetic anisotropy and we show that their propagation is actually strongly nonreciprocal, as a result of dynamic dipolar interactions. We investigate spin-wave non-reciprocity effects in single Bloch walls, which allows us to clearly pinpoint their origin, as well as in arrays of parallel walls in stripe domain configurations. For such arrays, a complex domain-wall-bound spin-wave band structure develops, some aspects of which can be understood qualitatively from the single-wall picture by considering that a wall array consists of a sequence of up/down and down/up walls with opposite non-reciprocities. Circumstances are identified in which the non-reciprocity is so extreme that spin-wave propagation inside individual walls becomes unidirectional.
The influence of religion and socio-economic status on coping with chronic diseases among older adults in Nigeria

ABSTRACT Although still regarded as a demographically young country, the increased life-expectancy in Nigeria has corresponded with increased rates of chronic diseases among older people. There is limited information about the strategies adopted by older people in dealing with chronic diseases. This study explored how religion and social support help older people cope with their chronic disease conditions, while accounting for the prevailing socio-cultural and economic circumstances in Nigeria. This qualitative study was conducted in two state-owned medical institutions, in a city in the North-Central part of Nigeria. In-depth interviews were conducted among 19 purposively selected chronically ill persons aged between 50 years and over, during clinic days, after receiving treatment from the medical doctors. Recurring themes include: ‘God as Bestower and Reliever,’ Disease as Frustration and Disruption,’ ‘Financial Strain and Drain,’ and ‘Times are Hard. ’ The study revealed that religion is central to peoples’ understanding and acceptance of their chronic disease conditions as well as adherence to prescriptions. It also explored the dual burden of coping with chronic conditions as well as being financially responsible for themselves and their families. The study also highlighted the centrality of religion in understanding chronic conditions as well as adherence to physicians’ orders/prescriptions.
Canonical analysis of the BCEA topological matter model coupled to gravitation in (2+1) dimensions

We consider a topological field theory derived from the Chern–Simons action in (2+1) dimensions with the I(ISO(2, 1)) group, and we investigate in detail the canonical structure of this theory. Originally developed as a topological theory of Einstein gravity minimally coupled to topological matter fields in (2+1) dimensions, it admits a BTZ black-hole solution, and can be generalized to arbitrary dimensions. In this paper, we further study the canonical structure of the theory in (2+1) dimensions, by identifying all the distinct gauge equivalence classes of solutions as they result from holonomy considerations. The equivalence classes are discussed in detail, and examples of solutions representative of each class are constructed or identified.
Low Mass Companions to White Dwarfs

This paper summarizes the results of over 17 years of work searching for low mass stellar and substellar companions to more than 370 nearby white dwarfs. Roughly 60 low mass, unevolved companions were found and studied all together, with over 20 discovered in the last few years, including the first unambiguous brown dwarf companion to a white dwarf, GD 1400B. The resulting spectral type distributions for companions to white dwarfs and nearby cool field dwarfs are compared, and the implications for binary star formation are discussed. A brief analysis of GD 1400B, including new data, is also presented
Effects of Acute Exposure and Acclimatization to High-Altitude on Oxygen Saturation and Related Cardiorespiratory Fitness in Health and Disease

Maximal values of aerobic power (VO2max) and peripheral oxygen saturation (SpO2max) decline in parallel with gain in altitude. Whereas this relationship has been well investigated when acutely exposed to high altitude, potential benefits of acclimatization on SpO2 and related VO2max in healthy and diseased individuals have been much less considered. Therefore, this narrative review was primarily aimed to identify relevant literature reporting altitude-dependent changes in determinants, in particular SpO2, of VO2max and effects of acclimatization in athletes, healthy non-athletes, and patients suffering from cardiovascular, respiratory and/or metabolic diseases. Moreover, focus was set on potential differences with regard to baseline exercise performance, age and sex. Main findings of this review emphasize the close association between individual SpO2 and VO2max, and demonstrate similar altitude effects (acute and during acclimatization) in healthy people and those suffering from cardiovascular and metabolic diseases. However, in patients with ventilatory constrains, i.e., chronic obstructive pulmonary disease, steep decline in SpO2 and V̇O2max and reduced potential to acclimatize stress the already low exercise performance. Finally, implications for prevention and therapy are briefly discussed.
3D Harmonic modeling of rotating permanent magnets for a PM-based planar actuator

A noval type of permanent magnet based planar actuator is proposed which consists of a permanent magnet mover which interacts with individually controllable permanent magnets in the stator. A state of levitation and actuation is obtained by mechanically altering the orientation of the stator magnets to control the forces and torques on the mover. In order to control and design the actuator, fast and accurate electromagnetic models are required. In this study, the harmonic modeling technique is applied for rotating and translating cuboidal and cylindrical permanent magnets and is compared to the equivalent charge model. The resulting magnetic scalar potential is in good agreement with FEM solutions and the harmonic model has shown computational benefit over the equivalent charge modeling technique.
Understanding migration to protected area buffer zones in Costa Rica utilizing cultural consensus analysis

Human migration to the world’s protected areas’ (PA) buffer zones is widely seen as a significant threat to conserving biodiversity. Research since 2005 has demonstrated some evidence for global migration trends but also highlighted the simultaneous need to understand the local, contextual factors that drive migration around individual PAs. Investigation into human migration patterns to these buffer zones has frequently relied on methods that do not accurately capture the calculus used by migrants in their decisions. The research presented here uses a mixed-methods, cognitive anthropological approach to assess the motivations of Costa Rican migrants to the buffer zones of three national parks. Employing cultural consensus analysis methodology in combination with a demographic analysis based on the Costa Rican census, this study was able to develop important insights into Costa Rican migrant motivations. Importantly, the research finds that there is not a single cultural model among the migrants surveyed regarding conditions driving their decisions. However, data collected indicate significant trends in migrants’ evaluation of critical variables driving decisions, how they relate to one another, and their significance to these migrants. Thus, migrant assessments of the conditions of these variables in both previous and current communities reveal a more complex, contextual picture. This work demonstrates the potential of cognitive anthropological methods to help unpack migrant decision making and help conservation managers understand the factors that drive migration to surrounding communities. The analysis provides further evidence supporting calls for methods that help managers and communities understand the particularities of migration behavior in PA contexts.
Predicting Mobile Game Adoption: Integrating Game Features and Theory of Planned Behavior

This study investigates gamers’ behavior in adopting mobile games by integrating game features and the theory of planned behavior (TPB). This study used 408 samples of Indonesian gamers. A partial least square is applied to examine the influence among subjective norm, perceived behavioral control, attitude, game features, and intention to play mobile games. The results show that the integration between Game features and TPB gives a deeper explanation of gamers’ behavior in adopting mobile games. Considering the factors in gamers’ behavior, this study's results give the base to formulate an implementation strategy for the appropriate game features in attracting gamers’ interest to keep playing mobile games. It is also the first study that integrates Game features and TPB to assess mobile game adoption.
Derived $\ell$-adic zeta functions

We lift the classical Hasse--Weil zeta function of varieties over a finite field to a map of spectra with domain the Grothendieck spectrum of varieties constructed by Campbell and Zakharevich. We use this map to prove that the Grothendieck spectrum of varieties contains nontrivial geometric information in its higher homotopy groups by showing that the map $\mathbb{S} \to K(Var_k)$ induced by the inclusion of $0$-dimensional varieties is not surjective on $\pi_1$ for a wide range of fields $k$. The methods used in this paper should generalize to lifting other motivic measures to maps of $K$-theory spectra.
A ug 2 01 1 Killing-Yano tensors and some applications

The role of Killing and Killing-Yano tensors for studying the geodesic motion of the particle and the superparticle in a curved background is reviewed. Additionally the Papadopoulos list [75] for Killing-Yano tensors in G structures is reproduced by studying the torsion types these structures admit. The Papadopoulos list deals with groups G appearing in the Berger classification, and we enlarge the list by considering additional G structures which are not of the Berger type. Possible applications of these results in the study of supersymmetric particle actions and in the AdS/CFT correspondence are outlined.
Characterization of graphs with distinguishing number equal list distinguishing number

The distinguishing number $D(G)$ of a graph $G$ is the least integer $d$ such that $G$ has an vertex labeling with $d$ labels that is preserved only by a trivial automorphism. A list assignment to $G$ is an assignment $L = \{L(v)\}_{v\in V (G)}$ of lists of labels to the vertices of $G$. A distinguishing $L$-labeling of $G$ is a distinguishing labeling of $G$ where the label of each vertex $v$ comes from $L(v)$. The list distinguishing number of $G$, $D_l(G)$ is the minimum $k$ such that every list assignment to $G$ in which $|L(v)| = k$ for all $v \in V (G)$ yields a distinguishing $L$-labeling of $G$. In this paper, we determine the list-distinguishing number for two families of graphs. We also characterize graphs with the distinguishing number equal the list distinguishing number. Finally, we show that this characterization works for other list numbers of a graph.
Innovative Unit Commitment Modeling Approach Considering Multi-infeed VSC-HVDC Links

Abstract This paper introduces an improved optimization model for the unit commitment (UC) problem of AC power systems considering multi-infeed VSC-HVDC links. The proposed formulation is based on the linear modeling of the AC network and point-to-point HVDC links, where power losses are properly considered by piecewise linearization of AC lines, DC links and VSC units. This UC model is featured by a mixed integer linear programming (MILP) framework, thus enabling effective calculations of the optimal hourly generation scheduling for multi-infeed VSC-HVDC power grids. These sophisticated power grid studies are associated with day-ahead electricity markets carried out by power system engineers at control centers. To demonstrate the applicability of the proposed MILP-based UC model, the IEEE RTS 24-bus test system is used to carry out two case studies. The first incorporates three point-to-point HVDC links where an in-depth analysis is carried by comparing its outcomes, with and without HVDC links. The second case study features two interconnected areas having three-infeed HVDC links and several tens of generation units. Both systems are analyzed for a 24-hr planning horizon. It is confirmed that the UC model described in this paper permits to study practical power grids with multi-infeed VSC-HVDC links.
Sensitivity-Enhanced High-Pressure Sensor Based on Suspended Fiber-Optic Fabry–Pérot Interferometer

We propose and demonstrate a suspended fiber-optic Fabry–Pérot interferometer for sensitivity-improved high-pressure measurement. A thin-cladding fiber (TCF) is inserted into a silica capillary wherein the end faces of the TCF and single-mode fiber form a suspended Fabry–Pérot (FP) structure. The sensitivity of the sensor is determined by the air microcavity length <inline-formula> <tex-math notation="LaTeX">$L_{1}$ </tex-math></inline-formula> and capillary length <inline-formula> <tex-math notation="LaTeX">$L_{2}$ </tex-math></inline-formula>. The sensitivity can be controlled by changing the <inline-formula> <tex-math notation="LaTeX">$L_{2}/L_{1}$ </tex-math></inline-formula> ratio. A capillary with inner and outer diameters of 100 and <inline-formula> <tex-math notation="LaTeX">$150~\mu \text{m}$ </tex-math></inline-formula>, respectively, was used to experimentally demonstrate this sensitivity enhancement. The <inline-formula> <tex-math notation="LaTeX">$L_{2}/L_{1}$ </tex-math></inline-formula> ratio was increased from 13.4 to 114.6 and the sensitivity increased from −361.41 to −2975.21 pm/MPa were achieved. In the pressure measurement range of 0–80 MPa, the uncertainty in the pressure measurement of the packaged sensor was 0.03%. The sensor has the advantages of small size, simple structure, remarkable accuracy, and large range, together with a much-suppressed temperature cross-sensitivity, approximately 0.0011 MPa/° C.
Relativistic Corrections to the Sunyaev-Zeldovich Effect for Clusters of Galaxies

We study the generalized Kompaneets equation (the kinetic equation for the photon distribution function taking into account Compton scattering by electrons) using a relativistically covariant formalism. Using the generalized Kompaneets equation, we derive an analytic expression for the Sunyaev-Zeldovich effect, which takes into account up to O(θ5e) terms, where θe = kBTe/mc2 is the relativistic expansion parameter and Te is the electron temperature. We carefully study the applicable region of the obtained analytic expression by comparing it with the result of the direct numerical integration. We conclude that the present analytic expression can be reliably applied to the calculation of the Sunyaev-Zeldovich effect for kBTe ≤ 15 keV, which is the highest electron temperature in the clusters of galaxies presently known. Therefore, the present analytic expression can be applied to all known clusters of galaxies.
On the Probabilistic Cauchy Theory of the Cubic Nonlinear Schrödinger Equation on Rd, d≥3

We consider the Cauchy problem of the cubic nonlinear Schrodinger equation (NLS) : i∂tu+Δu = ±|u|2u on Rd, d ≥ 3, with random initial data and prove almost sure well-posedness results below the scaling-critical regularity scrit = d−2 2 . More precisely, given a function on Rd, we introduce a randomization adapted to the Wiener decomposition, and, intrinsically, to the so-called modulation spaces. Our goal in this paper is three-fold. (i) We prove almost sure local well-posedness of the cubic NLS below the scalingcritical regularity along with small data global existence and scattering. (ii) We implement a probabilistic perturbation argument and prove ‘conditional’ almost sure global well-posedness for d = 4 in the defocusing case, assuming an a priori energy bound on the critical Sobolev norm of the nonlinear part of a solution; when d = 4, we show that conditional almost sure global wellposedness in the defocusing case also holds under an additional assumption of global well-posedness of solutions to the defocusing cubic NLS with deterministic initial data in the critical Sobolev regularity. (iii) Lastly, we prove global well-posedness and scattering with a large probability for initial data randomized on dilated cubes.
Changes in the Intestinal Microbes of Wild Spermophilus dauricus (Rodentia: Sciuridae) in Different Periods of Hibernation (A Model of Gut Ischemic Reperfusion Injury)

Reperfusion injury after intestinal ischemia and hypoxia is a complex and comprehensive disease with a poor prognosis and high fatality rate. However, whether it can promote or slow down intestinal ischemia-reperfusion injury remains unclear. Spermophilus dauricus is a hibernation animal with a short awake time that interrupts the long hibernation period. When these events occurred, the long-term ischemic intestine in hibernation rapidly congested and entered the hibernation and ischemic state again. However, Spermophilus dauricus is not sick, and this might be a good model for gut ischemic reperfusion injury. In this animal research study, 16s rRNA gene sequencing was used to detect the bacterial community composition of S. dauricus intestine before, during, and after the artificial hibernation process and short awakening hibernation, respectively. The results showed that there was no significant alpha diversity during the four periods; however, the beta diversity was different, especially in the awakening period. These differences in beta diversity may be due to the significantly increased abundance of 11 kinds of bacteria, including Anoxybacillus, Geobacillus, Klebsiella, Thermus, and Acinetobacter ( P <0.05), and the significantly reduced abundance of 16 species of bacteria, including Acinetobacter, Aquabacterium, Acidovorax, Thermus, and Klebsiella ( P <0.05) in the awakening period. This study provides guidance and reference for the exploration of animal hibernation mechanisms and research on intestinal ischemic re-enema injury.
Boundary Harnack principle for the absolute value of a one-dimensional subordinate Brownian motion killed at 0

We prove the Harnack inequality and boundary Harnack principle for the absolute value of a one-dimensional recurrent subordinate Brownian motion killed upon hitting 0, when 0 is regular for itself and the Laplace exponent of the subordinator satisfies certain global scaling conditions. Using the conditional gauge theorem for symmetric Hunt processes we prove that the Green function of this process killed outside of some interval $(a,b)$ is comparable to the Green function of the corresponding killed subordinate Brownian motion. We also consider several properties of the compensated resolvent kernel $h$, which is harmonic for our process on $(0,\infty )$.
Orbital Angular Momentum preserving guided mode in helically twisted hollow core photonic crystal fiber at Dirac point

We report trapping and propagation of photonic Dirac mode in a helically twisted hollow core photonic crystal fiber (HC-PCF) where the trapped light in the hollow (air) defect can preserve the orbital angular momentum (OAM). We show that a photonic Dirac point can emerge even in a twisted system for a suitable choice of curvilinear coordinate and the related waveguide defect modes defined in the new basis can preserve the associated OAM during axial translation. The effect of twist rate, defect geometry and crystal dimension on the propagation of OAM carrying trapped Dirac modes is critically analyzed. The results derived by FEM simulation are verified with an analytical theory based on dynamics of Bloch modes in twisted photonic crystals which are in good agreement. The proposed HC-PCF can play an important role in exciting and guiding of OAM carrying modes that help particle trapping and quantum communication.
A Comparative Approach to Financial Clustering Models: (A Study of the Companies Listed on Tehran Stock Exchange)

Data mining is known as one of the powerful tools in generating information and knowledge from raw data, and Clustering as one of the standard methods in data mining is a suitable method for grouping data in different clusters that helps to understand and analyze relationships. It is one of the essential issues in the field of investment, so by using stock market clustering, helpful information can be obtained to predict changes in stock prices of different companies and then on how to decide the correct number and shares in the portfolio to private investors and financial professionals' help. The purpose of this study is to cluster the companies listed on the Tehran stock exchange using three methods of K-means Clustering, Hierarchical clustering, and Affinity propagation clustering and compare these three methods with each other. To conduct this research, the adjusted price of 50 listed companies for the period 2019-07-01 to 2020-09-29 has been used. The evaluation results show that the obtained silhouette coefficient for K-means Clustering is higher and, therefore, better than other methods for stock exchange data. In the continuation of the research, calculating the co-integration of stock pairs that have the same co-movement with each other were identified, and finally, clusters were compiled using the t-SNE method.