Miracle-dz/UniFAR-FTUs huggingface dataset:
Kinetic Properties of an Interplanetary Shock Propagating inside a Coronal Mass Ejection

We investigate the kinetic properties of a typical fast-mode shock inside an interplanetary coronal mass ejection (ICME) observed on 1998 August 6 at 1 au, including particle distributions and wave analysis with the in situ measurements from Wind. Key results are obtained concerning the shock and the shock–ICME interaction at kinetic scales: (1) gyrating ions, which may provide energy dissipation at the shock in addition to wave-particle interactions, are observed around the shock ramp; (2) despite the enhanced proton temperature anisotropy of the shocked plasma, the low plasma β inside the ICME constrains the shocked plasma under the thresholds of the ion cyclotron and mirror-mode instabilities; (3) whistler heat flux instabilities, which can pitch-angle scatter halo electrons through a cyclotron resonance, are observed around the shock, and can explain the disappearance of bi-directional electrons (BDEs) inside the ICME together with normal betatron acceleration; (4) whistler waves near the shock are likely associated with the whistler heat flux instabilities excited at the shock ramp, which is consistent with the result that the waves may originate from the shock ramp; (5) the whistlers share a similar characteristic with the shocklet whistlers observed by Wilson et al., providing possible evidence that the shock is decaying because of the strong magnetic field inside the ICME.
Dimensional crossover for the beyond-mean-field correction in Bose gases

We present a detailed beyond-mean-field analysis of a weakly interacting Bose gas in the crossover from three to low dimensions. We find an analytical solution for the energy and provide a clear qualitative picture of the crossover in the case of a box potential with periodic boundary conditions. We show that the leading contribution of the confinement-induced resonance is of beyond-mean-field order and calculate the leading corrections in the three- and low-dimensional limits. We also characterize the crossover for harmonic potentials in a model system with particularly chosen short- and long-range interactions and show the limitations of the local-density approximation. Our analysis is applicable to Bose-Bose mixtures and gives a starting point for developing the beyond-mean-field theory in inhomogeneous systems with long-range interactions such as dipolar particles or Rydberg-dressed atoms.
Influences of breed, sex and age on seasonal changes in haematological variables of tropical goat kids

Abstract. The influences of breed, sex and age on seasonal changes in haematological variables of kids (1–4 months old) belonging to Red Sokoto (n = 60) and Sahel (n = 60) goats were studied at the peaks of the cold-dry, hot-dry and rainy seasons in a West Africa Guinea savanna climate. The results showed that, during the hot-dry season, Sahel goat kids had significantly higher (P
Teachers' Perspectives on Interactive Whiteboards as Instructional Tools in Four Jordanian Schools.

Cutting edge technologies are one of the main areas in which private schools compete so they can showcase themselves as pioneers In Jordan, as it is in other education contexts worldwide. The Interactive Whiteboard (IWB) is becoming one of the rapidly adopted educational technologies everywhere. However, while moving too fast to adopt new technologies, often decision is made without taking teachers’ perceptions into account. The current study focuses on teachers’ perspectives on two main aspects of the integration of IWBs in four Jordanian private schools: First, teachers’ perceptions of IWBs as instructional tools, and second, the presence of various supporting factors identified by the literature for the success of integrating IWB into schools. The study used a 26-item Likert scale which was administered to 200 teachers in the participating schools. The results showed that the participating schools spend extensive efforts and resources in integrating IWBs into their contexts; however, some supporting factors for the effective implementation might have been overlooked. In addition, in contrast to what some professionals might expect and some vendors might try to promote, IWBs did not make teachers’ job “easier” in terms of relieving teachers’ workloads, despite their values as reported by teachers.
Associations of Polymorphisms of the CYP1A1 and CYP1B1 Cytochrome P450 Genes with Breast Cancer in Kazakhstan

Associations of polymorphisms in rs4646903 site of CYP1A1 and rs1056836 site of CYP1B1 genes with the breast cancer (BC) were studied in two main ethnic groups of Kazakhstan Republic (Kazakhs and Russians). Total number of BC patients was 181, controls—397. The statistically significant differences were revealed in allele frequencies (χ2 = 5.93, р = 0.004) and in genotypes distribution (χ2 = 8.71, р = 0.015) in rs4646903 site of CYP1A1 gene in Kazakh but not in Russian group. The study of CYP1В1 rs1056836 site demonstrated differences in genotype distributions (χ2 = 7.48, р = 0.023) between BC patients and controls in Russian but not in Kazakh ethnic group.
Metaphors considered harmful? An exploratory study of the effectiveness of functional metaphors for end-to-end encryption

Background: Research has shown that users do not use encryption and fail to understand the security properties which encryption provides. We hypothesise that one contributing factor to failed user understanding is poor explanations of security properties, as the technical descriptions used to explain encryption focus on structural mental models. Purpose: We methodically generate metaphors for end-to-end (E2E) encryption that cue functional models and develop and test the metaphors’ effect on users’ understanding of E2E-encryption. Data: Transcripts of 98 interviews with users of various E2Eencrypted messaging apps and 211 survey responses. Method: First, we code the user interviews and extract promising explanations. These user-provided explanations inform the creation of metaphors using a framework for generating metaphors adapted from literature. The generated metaphors and existing industry descriptions of E2E-encryption are analytically evaluated. Finally, we design and conduct a survey to test whether exposing users to these descriptions improves their understanding of the functionality provided by E2E-encrypted messaging apps. Results: While the analytical evaluation showed promising results, none of the descriptions tested in the survey improve understanding; descriptions frequently cue users in a way that undoes their previously correct understanding. Metaphors developed from user language are better than existing industry descriptions, in that ours cause less harm. Conclusion: Creating explanatory metaphors for encryption technologies is hard. Short statements that attempt to cue mental models do not improve participants’ understanding. Better solutions should build on our methodology to test a variety of potential metaphors, to understand both the improvement and harm that metaphors may elicit.
AdaGrad stepsizes: Sharp convergence over nonconvex landscapes, from any initialization

Adaptive gradient methods such as AdaGrad and its variants update the stepsize in stochastic gradient descent on the fly according to the gradients received along the way; such methods have gained widespread use in large-scale optimization for their ability to converge robustly, without the need to fine-tune the stepsize schedule. Yet, the theoretical guarantees to date for AdaGrad are for online and convex optimization. We bridge this gap by providing theoretical guarantees for the convergence of AdaGrad for smooth, nonconvex functions. We show that the norm version of AdaGrad (AdaGrad-Norm) converges to a stationary point at the $\mathcal{O}(\log(N)/\sqrt{N})$ rate in the stochastic setting, and at the optimal $\mathcal{O}(1/N)$ rate in the batch (non-stochastic) setting -- in this sense, our convergence guarantees are 'sharp'. In particular, the convergence of AdaGrad-Norm is robust to the choice of all hyper-parameters of the algorithm, in contrast to stochastic gradient descent whose convergence depends crucially on tuning the step-size to the (generally unknown) Lipschitz smoothness constant and level of stochastic noise on the gradient. Extensive numerical experiments are provided to corroborate our theory; moreover, the experiments suggest that the robustness of AdaGrad-Norm extends to state-of-the-art models in deep learning, without sacrificing generalization.
Examination of Natural Tooth Color Distribution Using Visual and Instrumental Shade Selection Methods

Summary Aim: Although visual color determination is the most frequently applied method in dentistry, instrumental color analysis offers advantages like objectivity, measurability and rapidity. The aim of this study was to evaluate the natural teeth color in teeth without any restoration visually, and by using a computerized shade measuring and analyzing system in the population. Materials and Methods: 202 patients were inspected. Before instrumental shade matching visual matching was done by the inspector with Vitapan 3D Master Shade Guide in the day light. Images were taken with computerized shade measuring and analyzing system from patients’ natural right or left maxillary incisors and canines without any restoration. Then these images were evaluated by the original software of its own. Results: Value differences between visual and instrumental shade matching were statistically significant. Darker value levels were obtained with instrumental measurement. The distribution of hue was more reddish in instrumental examination than visual examination. Significant difference was found at cervical and middle third of the tooth in both visual and instrumental determination of chroma. Chroma of the tooth was higher at these two regions in visual assessment. Conclusions: Teeth colors were distributed more uniform in visual shade matching compared to instrumental matching. However, some teeth shades were more common in instrumental matching. Value scores were found higher with instrumental shade matching. Individual selection of shades for each tooth and different regions of a tooth instead of a single color is considered to be a factor to increase the success of the restoration.
Effects of exercise training with blood flow restriction on blood pressure in medicated hypertensive patients

The development of non-pharmacological approaches to hypertension (HA) is critical for both prevention and treatment. This study examined the hemodynamic and biochemical responses of medicated hypertensive women to resistance exercise with blood flow restriction (vascular occlusion). Twenty-three women were randomly assigned to one of three groups: High intensity strength training (n = 8); low-intensity resistance exercise with occlusion (n = 8); and control (n = 7). The first two groups underwent eight weeks of training performed twice a week, including three series of wrist flexion exercises with or without vascular occlusion. The exercised with occlusion group showed pre- to post-test reduction in systolic and diastolic blood pressure, mean arterial pressure, and double product, whereas the other groups showed no significant hemodynamic changes. In conclusion, resistance exercise during 8 weeks was effective in lowering blood pressure in medicated hypertensive subjects.
First principles of modelling the stabilization of microturbulence by fast ions

The observation that fast ions stabilize ion-temperature-gradient-driven microturbulence has profound implications for future fusion reactors. It is also important in optimizing the performance of present-day devices. In this work, we examine in detail the phenomenology of fast ion stabilization and present a reduced model which describes this effect. This model is derived from the high-energy limit of the gyrokinetic equation and extends the existing ‘dilution’ model to account for nontrivial fast ion kinetics. Our model provides a physically-transparent explanation for the observed stabilization and makes several key qualitative predictions. Firstly, that different classes of fast ions, depending on their radial density or temperature variation, have different stabilizing properties. Secondly, that zonal flows are an important ingredient in this effect precisely because the fast ion zonal response is negligible. Finally, that in the limit of highly-energetic fast ions, their response approaches that of the ‘dilution’ model; in particular, alpha particles are expected to have little, if any, stabilizing effect on plasma turbulence. We support these conclusions through detailed linear and nonlinear gyrokinetic simulations.
An Effective Virtual Reality based Remedy for Acrophobia

Virtual reality (VR) Exposure Therapy with sophisticated technology has been used in the Psychological treatment. The goal is to design a virtual environment using HCI (HMD) device with an interactive and immersive realistic 3D graphic scenes for exposure therapy of acrophobia that allows patient to sense height and gets used to the fearful feelings . The degree of fear is then used to evaluate the effectiveness of the system before and after therapy with the help of comparison. One may feel a little uneasy and perhaps accelerated heart rate, excessive sweating and shortness of breath, etc. are some of the most common physical symptoms of anxiety upon exposure to height. This extreme or irrational fear of height is called “Acrophobia”. The HMI based simulation is used which used the body sensation elucidation as physical symptoms of anxiety upon exposure to height to predict the results. The test reveals that anxiety level decreases from 16% at first level exposure and 8% at last level exposure. It is concluded from the results that VR exposure therapy is more effective than real exposure therapy and also the post test for VR exposure therapy were significantly better than post real exposure results. This system provides cost effective solution for rehabilitation environment.
An integrated model for influencing Saudi Arabian citizens to adopt E-government services.

This paper discusses E-government, in particular the challenges that face its development and widespread adoption in Saudi Arabia. E-government can be defined based on an existing set of requirements. E-government has been implemented for a considerable time in developed countries. However, E-government services still face many challenges in their implementation and general adoption in Saudi Arabia. In addition, the literature review and the discussion identify the influential factors, such as quality of service, diffusion of innovation, computer and information literacy, culture, lack of awareness, technical infrastructure, website design, and security, that affect the citizens’ intention to adopt E-government services in Saudi Arabia. Consequently, these factors have been integrated in a new model that would influence citizen to adopt E-government services. Therefore, this research presents an integrated model for ascertaining the intention to adopt E-government services and thereby aiding governments in accessing what is required to increase adoption.
Entrepreneurial initiatives as a microfoundation of dynamic capabilities

Purpose The purpose of this paper is to show how entrepreneurial initiatives in organizations serve as a microfoundation of dynamic capabilities and, thus, foster change in organizations. Design/methodology/approach This paper revises and applies conceptual and empirical research on dynamic capabilities, their microfoundations and corporate entrepreneurship. In addition, it develops a model of how entrepreneurial initiatives, operative routines and capabilities interact. Findings The paper develops a model of how entrepreneurial initiatives in organizations represent a microfoundation of dynamic capabilities. First, the model shows that environmental dynamism reduces fit of operative routines and capabilities. Second, the model states that entrepreneurial initiatives are triggered by operative routines and capabilities with respect to environmental dynamism. Third, the model suggests that entrepreneurial initiatives disrupt operative routines and capabilities and, thus, restore their fit in dynamic environments. The paper contributes to current research on dynamic capabilities, their microfoundations and corporate entrepreneurship. Originality/value This paper addresses the tension between routinization and the entrepreneurial nature of dynamic capabilities. Considering entrepreneurial initiatives as a microfoundation shows that dynamic capabilities might be entrepreneurial, but still preserve their patterned nature enabling repeated execution. This approach provides a way to reconcile the two sub-streams in dynamic capability research and preserve their ontological assumptions. Moreover, this paper extends the literature on dynamic capabilities by ascertaining how individual and group level entrepreneurial initiatives operate within a broader context.
A New Design and Analysis of BUS Body Structure

Optimization of mechanical response of automotive and body designs are increasingly relies on new models. Generally in international market for passenger’s buses design processes can rely on supercomputing facilities. Nowadays for the passenger buses have many local producers which construct vehicles based on local needs. In the competitive to stay these producers comply with the same requirements and weight reduction of their international counterparts without access to latest computation facilities. This paper proposes a new method for designing a bus body structure is designed and modelled in 3D modelling software Pro/Engineer. The original body is redesigned by changing the thickness and reducing the number of elements so that the total weight of the bus is reduced. The present used material for structure is steel. It is replaced with composite materials Kevlar and S 2 Glass Epoxy. The density of steel is more than that of composite materials, so by replacing with composites, the weight of the structure is reduced. Structural and Dynamic analysis is done on both the structures using three materials to determine the strength of the structure. Analysis is done in Ansys.
Structural resilience of spatial networks with inter-links behaving as an external field

Many real systems such as, roads, shipping routes, and infrastructure systems can be modeled based on spatially embedded networks. The inter-links between two distant spatial networks, such as those formed by transcontinental airline flights, play a crucial role in optimizing communication and transportation over such long distances. Still, little is known about how inter-links affect the structural resilience of such systems. Here, we develop a framework to study the structural resilience of interlinked spatially embedded networks based on percolation theory. We find that the inter-links can be regarded as an external field near the percolation phase transition, analogous to a magnetic field in a ferromagnetic–paramagnetic spin system. By defining the analogous critical exponents δ and γ, we find that their values for various inter-links structures follow Widom’s scaling relations. Furthermore, we study the optimal robustness of our model and compare it with the analysis of real-world networks. The framework presented here not only facilitates the understanding of phase transitions with external fields in complex networks but also provides insight into optimizing real-world infrastructure networks.
Fur does not fly, it floats: buoyancy of pelage in semi-aquatic mammals

The transition from a terrestrial to an aquatic lifestyle in mammals required the evolution of specific adaptations for locomotion and stability in water. We postulated that the non-wettable fur of semi-aquatic mammals is an important adjunct to buoyancy control. Fur buoyancy characteristics and hair morphology were examined for two terrestrial mammals (opossum, Didelphis vivginiana and Norway rat, Rattus norvegicus), and seven semi-aquatic mammals, (beaver, Castor canadensis; sea otter, Enhydra lutris; Australian water rat, Hydronzys chrysogaster; river otter, Lutra canadensis; American mink, Mustela vison; muskrat, Ondatra zibethicus; and platypus, Ornithorhynchus anatinus). We determined buoyancy hydrostatically, measured hair density on histological skin samples, and hair length and diameter. Buoyancy was positively correlated with hair density, but was not with hair length or thickness. As expected, buoyancy was considerably greater in aquatic mammals than in terrestrial mammals. Enhydra displayed the greatest hair density (1188.8 hairs/mm2j with a buoyant force of 0.94 N, whereas Rattus had the lowest hair density (95.2 hairslmm2) and Didelphis had the lowest fur buoyancy of 0.12 N. High hair density of non-wettable fur traps large amounts of air and thus provides semi-aquatic mammals with positive buoyancy and decreases the effort needed to float.
Implication of Genetic Algorithm in Cryptography to Enhance Security

In today’s age of information technology secure transmission of information is a big challenge. Symmetric and asymmetric cryptosystems are not appropriate for high level of security. Modern hash function based systems are better than traditional systems but the complex algorithms of generating invertible functions are very time consuming. In traditional systems data is being encrypted with the key but still there are possibilities of eavesdrop the key and altered text. Therefore, key must be strong and unpredictable, so a method has been proposed which take the advantage of theory of natural selection. Genetic Algorithms are used to solve many problems by modeling simplified genetic processes and are considered as a class of optimization algorithms. By using Genetic Algorithm the strength of the key is improved that ultimately make the whole algorithm good enough. In the proposed method, data is encrypted by a number of steps. First, a key is generated through random number generator and by applying genetic operations. Next, data is diffused by genetic operators and then logical operators are performed between the diffused data and the key to encrypt the data. Finally, a comparative study has been carried out between our proposed method and two other cryptographic algorithms. It has been observed that the proposed algorithm has better results in terms of the key strength but is less computational efficient than other two.