Miracle-dz/UniFAR-FTUs huggingface dataset:
A model for the thermal radio-continuum emission from radiative shocks in colliding stellar winds

Context. In massive-star binary systems, the interaction of the strong stellar winds results in a wind collision region between the stars, which is limited by two shock fronts. Besides the nonthermal emission resulting from the shock acceleration, these shocks emit thermal (free-free) radiation detectable at radio frequencies that increase the expected emission from the stellar winds. Observations and theoretical studies of these sources show that the shocked gas is an important, but not dominant, contributor to the total emission in wide binary systems, while it plays a very substantial role in close binaries. Aims. The interaction of two isotropic stellar winds is studied in order to calculate the free-free emission from the wind collision region. The effects of the binary separation and the wind momentum ratio on the emission from the wind-wind interaction region are investigated. Methods. We developed a semi-analytical model for calculating the thermal emission from colliding stellar winds. Assuming radiative shocks for the compressed layer, which are expected in close binaries, we obtained the emission measure of the thin shell. Then, we computed the total optical depth along each line of sight to obtain the emission from the whole configuration. Results. Here, we present predictions of the free-free emission at radio frequencies from analytic, radiative shock models in colliding wind binaries. It is shown that the emission from the wind collision region mainly arises from the optically thick region of the compressed layer and scales as ∼ D, where D is the binary separation. The predicted flux density S ν from the wind collision region becomes more important as the frequency ν increases, showing higher spectral indices than the expected 0.6 value (S ν ∝ ν, where α = 0.6) from the unshocked winds. We also investigate the emission from short-period WR+O systems calculated with our analytic formulation. In particular, we apply the model to the binary systems WR 98 and WR 113 and compare our results with the observations. Our theoretical results are in good agreement with the observed thermal spectra from these sources.
Performance Improvements Using Dynamic Performance Stubs

Dynamic Performance Stubs support performance improvement. They can be used to identify “hidden” bottlenecks and also to provide better estimations of the gain from performance improvement. The idea behind these stubbing mechanism will be described, the core concept will be explained and a closer look on the possibility of creating stubs will be given. Furthermore an introduction on “How to use dynamic performance stubs” is also included. Dynamic Performance Stubs
Using Student Perception Data for Teacher Reflection and Classroom Improvement

This paper reports the development, validation and use of two instruments designed to provide teachers with feedback information about studentsʼ perceptions of their learning environment and their attitudes. Data collected using these instruments are analysed to provide teachers with student feedback data as a basis for reflecting on their teaching practices which, in turn, can be used to guide the development and implementation of strategies to improve the learning environment and target attitudinal issues. Data collected over a three year period from a sample of 10 345 secondary students (2042 students in 2008, 4467 in 2009 and 3836 in 2010) in 684 classes (147 classes in 2008, 298 in 2009 and 239 in 2010) across 29 Western Australian schools were analysed to determine the validity and reliability of the two instruments. The results suggest that both of the instruments have strong construct validity when used with high school students. To investigate the processes undertaken by teachers as they used the data as part of an action research process, qualitative data (including entries in reflective journals, written reports, discussions and interviews) were collected from 43 teachers. This qualitative data was used to evaluate the usefulness of the two instruments as tools for teacher reflection and professional development. The practical application of the two instruments indicate that the student feedback data was a useful way for teachers to reflect on their practices and implement changes which resulted in improvements in the classroom learning environment.
Examining Relationship between Palestine Stock Exchange and Amman Stock Exchange-Cointegration Approach

This paper aims at examining the probable equilibrium and dynamic relations between Palestine Stock Exchange (PEX) and Amman Stock Exchange (ASE). Within the framework of international trade theories, this study employs Engle-Granger Cointegration procedure (1987) as an estimation model involving monthly time series data from 1997 through 2011. The empirical results show that there is a significant equilibrium relationship between PEX and ASE, but fail to establish empirical evidence on dynamic relations between the two stock markets using Granger Causality tests. However, analysis of dynamic interactions during the post-sample period via Impulse-Response Functions and Variance Decomposition suggest that changes in ASE index do influence the performance of PEX.
Charge and Current Compensation of Intense Charged Beams in Future Accelerators

Proposals for future high-energy accelerators are characterized by demands for increasingly intense and energetic beams. The classical operation of high-current accelerators is severely constrained by collective electrodynamic phenomena, such as problems related to space-charge, to high-current flow, to beamstrahlung and pair production. These detrimental electrodynamic effects dominate the dynamics and the collision interactions of high-intensity beams. With the introduction of soft space-charge and current compensation techniques utilizing lowto medium-energy lepton beams with charge polarity opposite to that of the beams to be neutralized, all electromagnetic high-intensity limitations may be removed. The application of beam compensation is proposed for various sections of di ferent types of classical accelerator systems, such as for ion sources and the low-energy beam transport sections of ion linacs, for the crossing points of circular and linear colliders and for the final focii of ion beam fusion drivers. The design and the operation of partially compensated accelerators becomes much more comfortable and design goals can be reached more easily without any significant electromagnetic perturbation. The ingredients of neutralization technology — low-energy electron and positron beams — are state-of-the-art and, as such, applicable today. Several methods of smooth beam compensation ca be identified and must be studied and selected for each specific case. Practical experience has to be gained in dedicated pilot experiments.
Query Recommendation by Coupling Personalization with Clustering for Search Engine

In the present world internet and web search engines have become an important part in one’s day-today life. For a user query, more than few thousand web pages are retrieved but most of them are irrelevant. A major problem in search engine is that the user queries are usually short and ambiguous, and they are not sufficient to satisfy the precise user needs. Also listing more number of results according to user make them worry about searching the desired results and it takes large amount of time to search from the huge list of results. To overcome all the problems, an effective approach is developed by capturing the users’ click through and bookmarking data to provide personalized query recommendation. For retrieving the results, Google API is used. Experimental results show that the proposed method is providing better query recommendation results than the existing query suggestion methods.
Improved Mask Protected DES using RSA Algorithm

The data encryption standard is a pioneering and farsighted standard which helped to set a new paradigm for encryption standards. But now DES is considered to be insecure for some application. Asymmetric mask protected DES is an advanced encryption method for effectively protecting the advanced DES. There are still probabilities to improve its security. This paper propose a method, which introduce a RSA key generation scheme in mask protected DES instead of plain key, which result in enhancement in the security of present asymmetric mask protected DES. We further propose a Vedic mathematical method of RSA implementation which reduce the complexity of computation in RSA block thereby resulting in reduced delay (four times)that improves the performance of overall system. The software implementation was performed using Xilinx 13.2 and Model-Sim was used for the simulation environment.
The Veterans Affairs Patient Aligned Care Team (VA PACT), a New Benchmark for Patient-Centered Medical Home Models: A Review and Discussion

Objective: Conduct a literature review on existing patient-centered medical home (PCMH) models and outline the differences and contributions. Data sources: Systematic PCMH review data from PubMed database, from January 2000 to March 2013. Results: Forty-eight (48) papers on various PCMH were included in the analysis. The types of collaborative PCMH models were compared in accordance to the scope of current PCMH demonstration projects, patient types, implementation strategy, and crossfunctional team recruiting. The performance measurement tools and methods for data collection/analysis were thoroughly explored. Finally, the outcomes from PCMH models were evaluated in regard to patient experience, staff experience, quality of care, and economic outcomes. Limitations: This review excluded the collaborative models which are not patient centered or patient oriented. Conclusions and implications: Healthcare systems and their primary care practices are redesigning to achieve goals identified in PCMH models. However, implementation of these models requires major transformation. The Department of Veterans Affairs (VA) PCMH model, Patient Aligned Care Teams (PACT) model, has improved patients’ and staff experience and care processes. PACT also includes innovative resources and tools to help healthcare teams develop a systematic approach to data-driven decision-making in healthcare transformation and should be considered when benchmarking for future PCMH model planning.
A moving collocation scheme for fourth order evolutionary partial differential equations y Xiangmin Xu.

Fourth order model equations arise in many physical applications such as thin film theory, lubrication theory, convection-explosion theory, flame and wave propagation, phase transition at critical Lipschitz points, bi-stable systems and so on. In recent years, degenerate parabolic equations of fourth order became important for modelling diffusion processes in Physics and Material Sciences. Indeed, fourth order terms are increasingly recognized as being significant in many physical models, and this has led to the burgeoning literature. The aim of t h s thesis is to study the moving collocation method for solving fourth order evolutionary partial differential equations. We start by presenting several types of fourth order evolutionary partial differential equations. Some difficulties we will encounter when numerically solving these fourth order evolutionary partial differential equations are addressed. A high resolution moving collocation scheme which uses septic Hermite splines is then introduced. MC4, a subroutine written in FORTRAN which implements the moving collocation method has been developed. The code is basically based on MOVCOL by Huang and Russell in 1996. Some new features of the code include a large selection of monitor functions and a conservation checking mechanism. Numerical examples are included to show the efficacy of the method.
Spatial Representativeness of PM2.5 Concentrations Obtained Using Observations From Network Stations

Haze has been a focused air pollution phenomenon in China, and its characterization is highly desired. Aerosol properties obtained from a single station are frequently used to represent the haze condition over a large domain, such as tens of kilometers, which could result in high uncertainties due to their spatial variation. Using a high‐resolution network observation over an urban city in North China from November 2015 to February 2016, this study examines the spatial representativeness of ground station observations of particulate matter with diameters less than 2.5 μm (PM2.5). We developed a new method to determine the representative area of PM2.5 measurements from limited stations. The key idea is to determine the PM2.5 spatial representative area using its spatial variability and temporal correlation. We also determine stations with large representative area using two grid networks with different resolutions. Based on the high spatial resolution measurements, the representative area of PM2.5 at one station can be determined from the grids with high correlations and small differences of PM2.5. The representative area for a single station in the study period ranges from 0.25 to 16.25 km2 but is less than 3 km2 for more than half of the stations. The representative area varies with locations, and observation at 10 optimal stations would have a good representativeness of those obtained from 169 stations for the 4 month time scale studied. Both evaluations with an empirical orthogonal function analysis and with independent data set corroborate the validity of the results found in this study.
ENHANCED ENGINEERING DESIGN PRACTICE USING KNOWLEDGE ENABLED ENGINEERING WITH SIMULATION METHODS

The objective is to present how Knowledge Based Engineering combined with simulation methods is a development step for the product development processes. In the presented work the authors discuss the actual state of industrial applications, with challenges, at Volvo Car Corporation, and Volvo Aero Corporation. Systems that combine synthesis and analysis continue to be developed and increasingly deployed and used in the entire design - evaluation loop allowing faster design iterations. The challenges of introducing these systems are seen on three different levels; technically oriented, methodological, cultural and social. Best practice is yet to be seen, and a new way of work is the probable result of introducing simulation supported KBE.
The Experiment and Numerical Simulation of Al Droplets Collision

The molten Al (aluminum) droplets collision research was conducted to investigate the collision mechanism in high temperature field. By using the 3D printing technology, the solid Al was melted into liquid by high-frequency electromagnetic heater, and the collision process was recorded by high speed camera. Meanwhile the numerical simulation of collision was calculated by Gerris. The results show that the coalescence occurs after tiny deformation, when the 580μm Al droplet has a collision with the 990μm Al droplet at a relative velocity 0.89m/s, and the new Al droplet diameter is about 1. 05μm. The result of simulation is also collision coalescence, which is in good accordance with the experiments.
Genetic Analysis of Some Commonly Grown Genotypes of Maize in Pakistan Using Maize Specific Simple Sequence Repeat (SSR) Primers

Maize (Zea mays) belongs to the family gramineae (poaceae), genus Zea and species mays. The genome of maize comprises approximately 2500 million base pairs. During the present study, maize specific Simple Sequence Repeat (SSR) primers were used to estimate genetic di stances among fourteen varieties/genotypes of maize commonly cultivated in Pakistan. On an average, 3.2 alleles per genotype were amplified. Average g enetic d istance estimated using the four SSR p rimer sets r anged f rom 0 - 53%. Dendogram based on DNA data showed that the fourteen genotypes were clustered in six groups A, B, C, D, E and F comprising 3, 4, 2, 2, 2 and 1 genotypes respectively. It has been concluded that genotypes 6098 and Ev- 1097 were most distantly related to each other.
Equally sloped tomography with oversampling reconstruction

We report the development of equally sloped tomography for the reconstruction of a 3D object from a number of 2D projections. In a combination of pseudopolar fast Fourier transform and the oversampling method with an iterative algorithm, equally sloped tomography makes superior 3D reconstruction to conventional tomography that has an intrinsic drawback due to the use of equally angled 2D projections. We believe this general approach will find applications in x-ray imaging, electron microscopy, coherent diffraction microscopy, and other tomographic imaging fields.
Robustness Evaluation of Local Descriptors

The descriptors should be robust to changes of images taken under various conditions in order to obtain correct recognition. In this paper, we compare the robustness of descriptors computed for local interest regions, for example, extracted by the Harris, SURF and MSER detector. Different descriptors have been compared, depending on the interest region detector. Our evaluation uses different methods of matching features to assess image transformations. We compare SIFT, SURF, SURF with regions detected by MSER, FREAK for interest regions. The results show that local descriptors are sensitive to the viewpoint change, zoom and rotation, and image blur. Illumination has less effect on the robustness of image changing. SURF with regions detected by MSER performs better and is recommended for its better robustness. Keywords-local descriptor; robust; extracting features; image changing
P2P Model Based on Isolated Broadcast Domains

Resource location is the most important issue for Peer-to-Peer (P2P) system and flooding is the fundamental mechanism for unstructured P2P systems. Redundant messages will exponential growth with flooding scope increasing which severely influences the scalability of the system. In this paper, a new P2P model based on isolated broadcast domains is given to reduce the amount of redundant messages by limiting the radius of messages transmitted. Analysis and experiments show that this model can guarantee coverage of nodes and significantly reduce the amount of redundant messages generated.
The Economic Drivers of Differences in House Price Inflation Rate Across MSAs

This study examines why monetary policy at the national level can have vastly different effects on appreciation rates of single family houses across metropolitan statistical areas (MSAs). The study employs Case/Shiller monthly house price index data for 19 MSAs from 1992:06 to 2014:12 and FHFA quarterly house price index data for 94 MSAs from 1992:3 to 2014:4. We model the importance of MSA-specific demand and supply characteristics through a set of interaction terms between these factors and monetary policy. The empirical analysis is cast in terms of a state-space approach with a stochastic trend component to absorb the impact of omitted variables. Robustness checks use panel data estimators with interaction terms. A lower federal funds rate is associated with home price run-ups in MSAs that are characterized by higher demand and tighter supply conditions.
The journey of imagery in relation to post traumatic stress (PTSD) treatment: a literature review

This purpose of this paper is to review the literature on imagery as it relates to the treatment of nightmares as a symptom of posttraumatic stress disorder (PTSD). This paper introduces the dire need for nightmare related PTSD treatments. Furthermore, it describes why imagery exposure works, why it should be used to treat PTSD related nightmares, and this paper will introduce proposed further research that has been influenced by the literature reviewed
5. AN INVESTIGATION OF E-SHOPPING QUALITY DETERMINANTS AMONG STUDENTS AT A HIGHER LEARNING INSTITUTION

Tourism management is a generic term with many approaches and meanings. For a long period this term has been identified with the public sector’s intervention in the area of tourism activity development. Nowadays the term’s content is much more embracing. The purpose of this study is twofold: (i) to point out the crucial importance of tourism management’s contribution into sustainable tourism development of a Mediterranean destination; and (ii) to propose a conceptual framework aiming at interrelating the development potential with the offering of quality experiences to visitors. The crisis of the Ford model (4Ss sea, sun, sand and sex) and the advent of a differentiated model (4Es environment, education, events and entertainment) are analyzed providing a modified framework in order to differentiate tourism management, approach ‘new tourist’, and offer quality experiences to visitors. In the first section the evolution of tourism management’s content is briefly described emphasizing on its current meaning. The second section analyses the product life cycle with regard to the two models of tourism management. It is suggested that ‘tourism management’, ‘sustainability’, and ‘visitor’s experience’ are the three key terms which could equally contribute to sustainable destination management. Within this framework, the third section explores issues and aspects of sustainable destination management through the 4Es model’s implementation. The adequate strategies to achieve main aims of destination management – i.e. development opportunities for destination and satisfaction to visitors through quality experiences are also presented within a modified tourism management framework and a conceptual framework is proposed. The paper concludes by formulating policy and management implications.
Diagnosing the Organizational Culture of a Turkish Pharmaceutical Company Based on the Competing Values Framework

Organizational culture plays a significant role in understanding organizational dynamics and it distinguishes the members of one organization from other people. In this regard; it is found out that an organization, which is able to maintain a strong and “preferred” culture, is likely to enjoy many benefits such as higher levels of performance, person-organization fit, commitment, job satisfaction and competitive advantage. Thus, the purpose of this study is to diagnose the culture of a pharmaceutical company, which is located in Turkey, and find out the “perceived” and “preferred” cultural profiles both in the headquarters and branches of the company. The perceived culture has been found as hierarchy whereas the preferred one has been found as clan leading to incongruence between the perceived and preferred cultural profiles. In this regard; the reasons lying behind this mismatch are discussed, as it is important for the success of the organization and person-organization fit. Hence, the influential effects of national culture on shaping the organizational culture profiles have been discussed. Furthermore, the effects of educational level and union membership on culture profiles are also explored to understand the dynamics leading to such results thoroughly.
A User Behavior Based Study on Search Engine Ranking

In this era of information explosion, finding convenient ways to get the desired information is becoming ever more vital today. With a review of the existing information retrieval and feedback technology, this paper puts forward a method to establish and update user profile model through obtaining user’s implicit feedbacks. The user’s explicit information is not a must. Instead, this method, with the implicit information acquired by observing the behaviors of the users when browsing web pages, establishes and updates the user profile model and thus reduces the workload. Keywords : Information retrieval? Implicit feedback? Relevance feedback; User profile model