Miracle-dz/UniFAR-FTUs huggingface dataset:
Numerical solutions of time-space fractional advection-dispersion equations

Summary Thispaperestablishesadifferenceapproximationontime-spacefractionaladvectiondispersion equations. Based on the difference approximation an ideal numerical example has been solved, and the result is compared with the one of the rigorous time fractional advection-dispersionequation and the rigorous space fractional advection-dispersionequation respectively. The results show: when time fractional order parameter γ=1 or space fractional order parameter α=2, the numerical calculation result of the time-space fractional advection-dispersionequations is in accordance with that of the rigorous time fractional advection-dispersionequation or the rigorous space fractional advection-dispersion equation. The variation law of the result with parameter is also similar to them, that is when γ is smaller, diffusion is slower; when α is smaller, diffusion is faster. The simulation calculation for a practical example indicates that time-space fractional advection-dispersion equations can simulate the skewness and the tail of anomalous diffusion. This paper provides a efficient tool for the research of fractional advection-dispersion equations.
Does relational capital mediate the effects of export knowledge on firm performance

Background: Small exporting firms from a developing economy like the Philippines need to build and nurture their relation capital as well as gain adequate knowledge about exporting in order to succeed in their export ventures. Given the institutional voids in developing economies, relational capital and export knowledge have become critical sources of competitive advantage that enable these small firms to successfully exploit business opportunities overseas. It is not clear however, how relational capital and export knowledge relate to each other such that they synergistically and positively contribute to firm performance in the context of small exporters in the Philippines. Aims: This paper challenges the conventional view that relational capital is an antecedent to knowledge within the firm. Rather, we argue that relational capital is the mechanism through which knowledge is able to influence firm performance, particularly for exporting SMEs in developing countries. The main purpose is to test the direct, indirect and mediating effects of relational capital on the relationship between export knowledge and firm performance. Method: The study uses survey data from a sample of 175 SMEs engaged in exporting from the Philippines. SEM is used to estimate the direct, indirect and mediating effects similar to the approach used by Kelloway (1998) and James & Brett (1984). Results: The results confirm that both export knowledge and relational capital are positively related to firm performance and that the latter has partial mediating effects on the relationship between export knowledge and firm performance. Conclusion: The findings challenge the conventional wisdom that export knowledge is an antecedent to relational capital. The findings in this study suggest that relational capital allows firms to exploit existing export knowledge and they are able to improve their performance despite the institutional void often present in developing countries.
Opening the Blackbox: How Does Labor Market Policy Affect the Job Seekers' Behavior? A Field Experiment

Empirically, not much is known about the mechanisms how labor market programs like job search assistance and training operate to support finding a job. This paper provides novel evidence to open the "blackbox": it causally links the program interventions to the dynamics of search behavior, beliefs and non-cognitive skills. The study is based on a unique combination of a randomized field experiment with detailed register data and a panel of repeated surveys. The tested coaching program, focused on older job seekers, turns out to increase the job finding of participants by 9 percentage points (72% vs. 63% in the control group). The treatment effect is driven by a reduction of reservation wages and an increase in search efficiency. Moreover, I find short-run effects on motivation, self-confidence and beliefs. The job seekers overestimate their chances slightly less with respect to job interviews and salaries. Overall, the focus on realistic expectations and on search strategy appears to be important for program success. The experiment shows that evaluation designs which directly assess behavior can provide a fruitful base for targeted policy design.
Mining Identification Rules for Classifying Mobile Application Traffic

Classifying mobile application traffics is important in many network management tasks. Existing works rely on human expertise and reverse engineering to build classification rules. The huge number of mobile applications make it ineffective and even infeasible to do reverse engineering on every mobile application. In this thesis, we design a novel structure of app identification rules. Two algorithms are developed to mine the rules from HTTP header fields without any other external input. In addition, we also explore the function and effects of different HTTP header fields in the identification task. An extensive empirical study on real data verifies the effectiveness of our algorithms.
The National Association for Media Literacy Education ’ s Journal of Media Literacy Education 7 ( 3 ) , 41 -‐ 53 A Multi-Dimensional Approach to Measuring News Media Literacy

Measuring news media literacy is important in order for it to thrive in a variety of educational and civic contexts. This research builds on existing measures of news media literacy and two new scales are presented that measure self-perceived media literacy (SPML) and perceptions of the value of media literacy (VML). Research with a larger sample of college undergraduate students and a smaller sample of adults enabled the validation of these measures. Results confirm the value of conceptualizing news media literacy using the theoretical subcomponents of authors & audiences, messages & meaning, and representation & realities. The VML scale, in particular, proved especially consequential in predicting knowledge about and attitudes towards the media.
Improving speech recognition on a mobile robot platform through the use of top-down visual queues

In many real-world environments, Automatic Speech Recognition (ASR) technologies fail to provide adequate performance for applications such as human robot dialog. Despite substantial evidence that speech recognition in humans is performed in a top-down as well as bottom-up manner, ASR systems typically fail to capitalize on this, instead relying on a purely statistical, bottom up methodology. In this paper we advocate the use of a knowledge based approach to improving ASR in domains such as mobile robotics. A simple implementation is presented, which uses the visual recognition of objects in a robot's environment to increase the probability that words and sentences related to these objects will be recognized.
Impact of plant water uptake strategy on soil moisture and evapotranspiration dynamics during drydown

Experiments have shown that plants can compensate for water stress in the upper, more densely rooted, soil layers by increasing the water uptake from deeper layers. By adapting root water uptake to water availability, plants are able to extend the period of unstressed transpiration. This strategy conflicts with the approach in many land surface schemes, where plant water uptake is treated as a static process. Here we derive expressions for the typical drydown trajectories of evapotranspiration and soil moisture for both strategies. We show that the maximum difference in evapotranspiration between the two strategies during drydown can exceed 50%. This in turn leads to a difference in root zone soil moisture of up to 25%. The results stress the importance of incorporating realistic root water uptake concepts in land surface schemes.
Four‐Spacecraft Magnetic Curvature and Vorticity Analyses on Kelvin‐Helmholtz Waves in MHD Simulations

Four‐spacecraft missions are probing the Earth's magnetospheric environment with high potential for revealing spatial and temporal scales of a variety of in situ phenomena. The techniques allowed by these four spacecraft include the calculation of vorticity and the magnetic curvature analysis (MCA), both of which have been used in the study of various plasma structures. Motivated by curved magnetic field and vortical structures induced by Kelvin‐ Helmholtz (KH) waves, we investigate the robustness of the MCA and vorticity techniques when increasing (regular) tetrahedron sizes, to interpret real data. Here for the first time, we test both techniques on a 2.5‐D MHD simulation of KH waves at the magnetopause. We investigate, in particular, the curvature and flow vorticity across KH vortices and produce time series for static spacecraft in the boundary layers. The combined results of magnetic curvature and vorticity further help us to understand the development of KH waves. In particular, first, in the trailing edge, the magnetic curvature across the magnetopause points in opposite directions, in the wave propagation direction on the magnetosheath side and against it on the magnetospheric side. Second, the existence of a “turnover layer” in the magnetospheric side, defined by negative vorticity for the duskside magnetopause, which persists in the saturation phase, is reminiscent of roll‐up history. We found significant variations in the MCA measures depending on the size of the tetrahedron. This study lends support for cross‐scale observations to better understand the nature of curvature and its role in plasma phenomena.
DISCOVERY OF GAMMA-RAY EMISSION FROM THE SHELL-TYPE SUPERNOVA REMNANT RCW 86 WITH HESS

The shell-type supernova remnant (SNR) RCW 86, possibly associated with the historical supernova SN 185, with its relatively large size (about 40′ in diameter) and the presence of nonthermal X-rays is a promising target for γ-ray observations. The high sensitivity, good angular resolution of a few arcminutes and the large field of view of the High Energy Stereoscopic System (HESS) make it ideally suited for the study of γ-ray morphology of such extended sources. HESS observations have indeed led to the discovery of the SNR RCW 86 in very high energy (VHE; E > 100 GeV) γ-rays. With 31 hr of observation time, the source is detected with a statistical significance of 8. 5σ and is significantly more extended than the HESS point-spread function. Morphological studies have been performed and show that the γ-ray flux does not correlate perfectly with the X-ray emission. The flux from the remnant is ∼10% of the flux from the Crab nebula, with a similar photon index of about 2.5. Possible origins of the VHE γ-ray emission, via either Inverse Compton scattering by electrons or the decay of neutral pions produced by proton interactions, are discussed on the basis of spectral features obtained both in the X-ray and γ-ray regimes.
Influence of Corophium volutator and Hydrobia ulvae on intertidal benthic diatom assemblages under different nutrient and temperature regimes

Epipelic diatoms dominate the microphytobenthos of estuarine sediments, where they play important roles in ecological processes such as primary production, secondary production and sediment stability. Grazing (top-down control) and nutrients (bottom-up control) regulate the bio- mass and species composition of intertidal benthic diatom assemblages. However, observations of grazing/predation effects on species richness differ under contrasting nutrient conditions. We inves- tigated the interactive effects of grazing, nutrients and temperature and compared the impacts of Corophium volutator and Hydrobia ulvae—2 species that differ in their feeding strategies and bio- turbation effects. Diatom assemblages were collected from 2 estuaries (Biezelingsche Ham, Wester- schelde, high nutrient, and Zandkreek, Oosterschelde, low nutrient) in The Netherlands that differ in their dominant macrofaunal grazer species. Assemblages were grown in the laboratory without (con- trol) and with grazing activity under different nutrient and temperature regimes. C. volutator exerted a strong regulatory influence on epipelic diatoms by reducing biomass, and preferentially consuming certain dominant taxa, thereby increasing species richness, evenness and diversity. The percentage of epipsammic species increased in the presence of C. volutator, at the expense of Navicula species. Biezelingsche Ham assemblages grazed by C. volutator were not influenced by nutrient or tempera- ture regime, while control assemblages were influenced by temperature. In contrast, differences in the structure of diatom assemblages between the treatments were far less pronounced for H. ulvae- grazed and control Zandkreek assemblages. H. ulvae appeared to be a general consumer, grazing subdominant species. Species richness was greater at low temperature, regardless of nutrient level. Macrofaunal grazing did not predictably increase or decrease species diversity, but could potentially do both, and it may mask the effects of environmental and bottom-up control.
BEHAVIOURAL AND ATTITUDINAL OUTCOMES OF PSYCHOLOGICAL CONTRACT VIOLATION AMONG SOME SELECTED SMEs WORKERS: A Psychological Appraisal of Operational Challenges of SME’s in Nigeria

Employment situation is widely conceived as a ‘social contract’ powered by ‘exchange processes’ between two parties. When expectations from such mutual “social contract” do not happen in the workplace, employees may perceive a violation in the psychological contract. Recognizing the import of the breach to the potential changes in the employment relationship the study examined behavioural and attitudinal outcomes of psychological contract violation among some selected SMEs workers in Lagos metropolis. Employee’s perceptions as reflected in self reports constituted the central features of a model underlying the study, as they were believed to be related to the individual experience. A total sample of 514 full and part-time employees of some twelve front-line SMEs from Logos metropolis participated in the study. The study was anchored on the Social Exchange Theory) and Adam’s Smith Equity Theory. It was hypothesized that (i) t here will be a significant positive correlation between feelings of psychological contract violations and employees behavioural and attitudinal outcomes. (ii) Psychological contract violation will correlate positively with negative behavioural and attitudinal outcomes. The data collected were analysed using independent t-test, multiple linear regression analysis and multivariate analysis of variance (MANOVA). Key findings suggest that (i) feelings of psychological contract violations was generally high across workgroups, organizational types, as well as job cadre, (ii) fraudulent self-enrichment tendencies, theft and deception, cutting corners and diversion of resources, sabotage and dishonesty behaviours and impropriety/sharp corrupt practices was established (ii) significant high level effort withholding behaviours was also confirmed among the sampled employees. Practical and human resource implications of the results were discussed in the light of extant literatures.
fMRI-BCI: a Review

Functional magnetic resonance imaging (fMRI) is a new tool for brain-computer interface (BCI). This paper presents an overview to fMRI-BCI. Our attention is mainly put on the methods of signal acquisition, signal preprocessing, and signal analysis of basic fMRI-BCI structure. The available softwares and the applications of fMRI-BCI are briefly introduced. At last, we suggest focusing on some technologies to make fMRI-BCI more perfect.
Effect of High-speed Parameters on Uncoated Carbide Tool inFinish Turning Titanium Ti-6Al-4V ELI

In this work, the Sandvik uncoated carbide insert, CNGG 120408-SGF-H13A was used as a cutting tool in high-speed turning of titanium alloy Ti-6Al-4V ELI (extra-low interstitial) with hardness of 32 HRC. Wear is one of the problems that cannot be avoided in machining process. Therefore, the objective of this paper was to investigate tool-wear behavior of various cutting-speed values (high-speed range) on the tool life of the cutting tools, especially in finishing titanium alloy. The experiments were performed under flooded coolant condition using water-based mineral-oil. The cutting speeds employed were 120, 170 and 220 m/min. The feed rate was constant at 0.2 mm/rev and the depth of cut was 0.4 mm. Based on the results, the highest cutting speed of 220 m/min caused the highest wear rate. By linking the machine operations and the tool life curves obtained using flank wear data, the wear behavior of uncoated carbide was described.
In Vitro Comparison of Shear Bond Strength Between Clarity Bracket and Transcend Ceramic Bracket

Ceramic brackets were introduced because of increasing aesthetic demands. Objective: The purpose of the present research was to find out and do comparison of the shear bond strength and bond failure location of clarity ceramic and Transcend brackets. Setting: This comparative study was conducted at department of Orthodontics, de’Montmorency College of dentistry, Lahore. Methodology: Fifty brackets of each type were bonded to 100 extracted first premolar teeth with the similar bonding system. Each bracket type was tested on a Schimadzu testing machine to investigate the debonding force levels. Optical stereo microscope was used to evaluate the Adhesive Remnant Index (ARI). Conclusion: It was concluded that Shear bond strength and ARI scores differences between the Clarity and Transcend ceramic brackets are insignificant.
Effect of high acyl gellan addition on activation energy values and flow behavior of film forming solutions

Polysaccharides such as gellan gum have been used in the alimentary industry in order to produce functional foods. The estimation of the activation energy of biopolymers materials provides important information for adequate selection and application of these materials, which are utilized in processes such as active film production. This study aims to determine the flow behavior and activation energy of film forming solution (FFS) based on carboxymethylcellulose (CMC) and xanthan gum (XG) formulated with various concentrations (0.1, 0.5 and 0.7 % p/v) of high acyl gellan (HAG). The flow behavior of the dispersions was determined at 25°C with a controlled stress rheometer (HAAKE MARS 60) whereas the activation energy values were established through modeling the relationship between viscosity and temperature employing the Arrhenius equation. All the studied FFS showed non-Newtonian shear-thinning behavior with an adequate 630 Ricardo Peña-Flórez et al. adjustment to the Ostwald de Waele model. With respect to the activation energy values, the highest concentration of HAG yielded, the highest activation energy values (37 to 48 kJ/mol); whereas dispersions without HAG showed the lowest activation energy values (1.27 kJ/mol). These findings indicated that activation energy is proportional to HAG concentration. These results are promising and suggest the possibility of developing heat resistant active films based on HAG.
TinyAFD: Attack and Fault Detection Framework for Wireless Sensor Networks

Wireless Sensor Networks (WSNs) are especially vulnerable to malicious attacks because of the limited resources available on the sensor nodes. When conducted against WSNs that run critical applications, such as military surveillance, these attacks may threaten human lives. Therefore, it is important to integrate strong security mechanisms for protecting critical applications that run on top of WSNs. In this paper, we propose a security solution for detecting attacks and faults in WSNs, called Tiny Attack and Fault Detection Framework (TinyAFD). The framework is modular, as it consists of engines able to detect different attacks based on signatures, providing the possibility to modify signatures at runtime and to easily integrate new specialized engines. We implemented TinyAFD in TinyOS and conducted multiple tests in order to evaluate the functionality and performance of the framework. In comparison with alternative solutions, TinyAFD is modular, configurable and extensible, and it mitigates most well-known attacks, while being energy efficient.
The Use of Innovative Nano emulsions and Nano-Silver Composites Packaging for anti-bacterial properties: An article review

Nowadays, the use of innovative Nanotechnology in the food industry quality control has significantly increased and it is widely employed in numerous fields such as diagnosis of microbial toxin of foods using Nanobiosensors, increasing food shelf-life with the help of Nano-clay and Nano-silver packaging, as well as changing some of the unpleasant organoleptic properties such as taste, color, and smell which are specifically important in marine products, so that the usage of this technology is growing with an increasing pace . Numerous branches of this technology such as Nanoinjection is used in medical fields in order to inject chemical mixtures for chemotherapy to the patients and avoiding the spread of these mixtures in the body organs and blood circulation system, in a way that the target tissue is only affected and goes under chemotherapy. Correspondence H Ahari, Department of Food Science and Technology, Science and Research branch, Islamic Azad University, Science and Research Branch, Tehran, Iran (email: Dr.h.ahari@gmail.com ) They are utilized in diverse fields such as laboratory facilities, production of laboratory covers for impeding the penetration of acidic and even microbial materials into the cloths, as well as production of anti-acid tiles and ceramics which resist inflammation, absorption of acidic materials and solvents. Using zinc Nanocomposites like Nano-titanium dioxide in food packaging has also had a paramount effect in controlling the contamination of products and increasing their shelf-life without apparent and physical changes of the product. Besides increasing the shelf-life and lag phase, one of the basic implications of Nano-packaging covers is increasing the durability phase (stability phase) which in line with the discretion of the producer can improve the sensual quality of the packaged samples. These samples can change in terms of texture, smell and color depending on the additives added to the Nano-packaging covers and resolve the unpleasant smells disseminated from chicken, fish and shrimp in most of the cases.
Reflecting on the Affordances and Constraints of Technologies and Their Impact on Pedagogical Goals

Abstract Teacher educators must examine how technology selection facilitates and constrains the learning outcomes of the courses they teach. This article introduces a process for selecting and evaluating technologies that meet the important principles of each learning task. As an example from his own practice, the author details how he used the process to evaluate two technologies—discussion boards and blogs—as potential technologies for teacher reflection and to assess whether implementing blogs as part of a semester-long teacher education course yielded evidence to support his evaluation. These findings speak to both the potential and difficulty of developing sustainable practice.
Final report for SERDP WP-2209 Replacement melt-castable formulations for Composition B

Abstract : Objective. Composition B is a melt-cas Objective. Composition B is a melt-castable explosive formulation incorporating TNT and RDX. Both of these components have undesirable environmental impacts from production and use. The desired outcome of this work was the selection of an explosive material to replace Comp-B that would preserve the beneficial attributes of that explosive without the negative environmental ramifications table explosive formulation incorporating TNT and RDX. Both of these components have undesirable environmental impacts from production and use. The desired outcome of this work was the selection of an explosive material to replace Comp-B that would preserve the beneficial attributes of that explosive without the negative environmental ramifications.