Miracle-dz/UniFAR-FTUs huggingface dataset:
A proposed multi‐dimensional approach to evaluating service recovery

Purpose – The purpose of this paper is to extend thinking on service recovery processes and satisfaction with service recovery, using multi‐dimensional consumer outcomes. The objective of the work was to propose that satisfaction with service recovery should be based on customers' expectations of the recovery encounter, which would be shaped by their expectations of “non‐failed” encounters.Design/methodology/approach – The paper adopts a theoretical approach. Using the existing service recovery literature as well as the traditional services literature, the conceptual framework and associated research propositions are developed.Findings – The proposed framework suggests that service recovery is a service encounter it its own right. The effectiveness of recovery encounters will be based on how encounters operate relative to customer expectations and experiences with regard to the recovery activity.Research limitations/implications – The research propositions and proposed framework need further empirical inv.
Comparative Antibacterial Study of Aqueous and Ethanolic Leaf Extracts of Annona Muricata

This research project was aimed at investigating the antibacterial efficacy of aqueous and ethanol leaf extracts of A. muricata using agar-disc diffusion method for five clinical isolates of bacteria consisting of two gram-positive ( Staphylococcus aureus and Streptococcus mutans ) and three gram-negative ( Pseudomonas aeruginosa, Escherichia coli, Salmonella typhi ) bacteria which have been implicated in the most common types of bacterial infections such as diarrhea, typhoid fever, tooth decay, etc. The antibacterial activity was measured by the diameter of zone of inhibition (mm) observed and the extracts were found to exhibit antibacterial activities against the test organisms with each organism showing different patterns of formation of zones of inhibition at different concentrations of the extracts. The results of this study revealed that S. aureus was the most susceptible gram-positive bacteria and S. typhi was the most susceptible gram-negative bacteria which indicated that this plant contains compounds with wide antibacterial activity which validates their use for treatment of various microbial infections in traditional medicine. The findings in this study provide the basis for further study on the plant with the aim of isolating and identifying the active substances responsible for its antimicrobial activities. The plant could also be standardized to develop cheap, safer, culturally acceptable herbal medicines to help combat the problem of antibiotic resistance. The extraction of A.muricata which was done by maceration yielded 14.95% and 17.63% for aqueous and ethanol extracts respectively.The difference between both extracts when compared to the standard antibiotic(Ciprofloxacin) was significant(p<0.05 level of significance) against P.aeroginosa, E coli and S.mutans . Conversely, S aureus and S.typhi showed no significant difference(p<0.05 level of significance) in their response to both extracts(400 mg/ml) and the standard drug.This shows that A.muricata extract can be potential antimicrobial agent directed against S.aureus and S.typhi. Keywords: Annona muricata, antibacterial, extracts, comparative, ethno-medicinal.
The role of intensity of Facebook usage in social capital development: An example with Arab students

This study extends prior literature on social networking sites, e.g., Facebook, to an under researched context, Arab countries. In particular, this research compares the Arab and non-Arab youth in the UAE in terms of motivations, intensity of Facebook usage and their social capital development. With a survey study involving 123 students in the UAE, the results suggest that the need for socialization is a driving force for intensity of Facebook usage among the youth in the UAE, implying that the driving forces of Facebook usage are regional specific. Moreover, intensity of Facebook usage contributes more to bonding social capital rather than bridging social capital. Significant gender and ethnic differences are reported in intensity of Facebook usage and resulting bonding social capital.
Hypothesis of the Hidden Multiverse Explains Dark Matter and Dark Energy

Analysis of WMAP and Planck spacecraft data has proved that we live in an invisible Multiverse, referred to as hidden, that has a quaternion structure. It explains the reason for the mutual invisibility of parallel universes contained in the hidden Multiverse. It is shown that the hidden Multiverse includes most likely twenty parallel universes from different dimensions, six of which are adjacent to our universe. Besides, edges of the hidden Multiverse are connected to other (from one to four) Multiverses, which are observable neither by electromagnetic nor by gravitational manifestations. The Multiverse described contains four matter-antimatter pairs, annihilation of which is prevented by relative spatial position of the universes. The experimental proof of existence of the hidden Multiverse is explained to be the phenomenon of dark matter and dark energy that correspond to other invisible parallel universes, except ours, included in the hidden Multiverse. General scientific principle of physical reality of imaginary numbers, refuting some of the statements of the existing version of the special theory of relativity, is a physical and mathematical foundation of the outlined conception of the hidden Multiverse. The article presents relativistic formulas of the theory of special relativity adjusted in accordance with the principle. It also offers appropriate interpretation of multidimensional space of the hidden Multiverse.
Efficient Analysis and Flexible Design of 1D Leaky- Wave Antennas composed by a Parallel-Plate Waveguide loaded with two Metallodielectric FSS

2D Fabry-Perot Leaky-Wave Antennas (FPLWA) have been attracting much interest in the last years [1-3]. These antennas offer a simple solution to achieve highly directive patterns from a single point source by using Partially Reflective Surfaces (PRS). FPLWA are normally designed to radiate at broadside [1-3], although conical beam steering has also been proposed [4]. On the other hand, 1D LWA based on the introduction of a printed circuit inside a waveguide has been recently proposed [5-6]. In particular, this hybrid waveguide printed-circuit technology offers a flexible control of the propagating constant of the fundamental leaky-mode. This allows a flexible tapering of the radiation pattern, synthesizing any pointing angle, radiation efficiency and side lobes distributions [5-6]. In this paper, an original 1D FPLWA is proposed by the combination of these two concepts. This structure (shown in Fig1-a), consists of a parallel plate waveguide (PPW) loaded by two dipole-based Frequency Selective Surfaces (FSS) [1-3]. The first FSS is inserted inside the top of the PPW, and acts as a PRS [1-2]. The other FSS is located at the bottom of the PPW and is backed by a metal surface, behaving as an Artificial Magnetic Conductor (AMC) [3].
Reproductive biology and early generation's selection in conventional potato breeding.

This article gives an overview of potato reproductive biology as well as selection in early generations' in conventional breeding programmes. Potato is an autotetraploid (2n=4x=48, 4EBN) with tetrasomic inheritance. Both interlocus and intralocus interactions occur and the more they are, the greater the heterosis. Both additive and non-addititve gene actions are important in controlling various traits. Favourable traits are fixed in F1 generation due to clonal propagation. Potato is predominantly self pollinated; flowering and fruiting are mainly affected by genotype, day length, and temperature. Continued self-pollination results in inbreeding depression; this results in reduction of germination percentage, plant vigour, flowering, male fertility, and open-pollinated fruit set. Hybrids are generally more vigorous than open-pollinated seeds; the open-pollinated seeds are generally selfs. The principal method of potato breeding is the conventional hybridisation followed by recurrent selection in the clonal generations. The choice of parents is determined by the breeding objective; crossability and unrelatedness should also be considered. The simplest method for predicting the value of cross combinations is to evaluate progenies at seedling stage. Conventional potato breeding takes long (about 10 years) before a cultivar is released, mostly due to the slow multiplication rate of the crop. This time can be reduced through use of marker assisted selection in identifying parents with desirable traits and selecting superior clones genotypically at seedlings stage.
CONCENTRATION OF OWNERSHIP AND CONTROL AS A GOVERNANCE MECHANISM IN THE BRAZILIAN FINANCIAL SYSTEM

In this paper we analyse how ownership and control work in the main banks operating in Brazil. Our purpose is to identify the mechanisms through which investors try to secure the control of the corporations and the return of the capital invested. Unlike the Anglo-Saxon governance model, where the usual practice is to distribute the share capital among a large number of shareholders, or still, the Japanese or German models, with a massive participation of the banks in the control of the companies, recent research in the Brazilian companies listed in the stock exchange indicate a great volume of voting shares in the hands of a few shareholders. In the present study we seek to reveal whether this corporate governance mechanism also prevails in the Brazilian banking sector. The analysis comprised fifty of the biggest banks operating in Brazil, accounting for over 90% of the total assets of the Brazilian financial system. This study, besides revealing the levels of concentration of control and ownership of the leading Brazilian financial institutions, elucidates the corporate governance models featuring in the literature. It also explains how, in the management of the financial organizations, the investor, when making use of the mechanisms that secure their rights to ownership, guarantees the control and legal protection of his/her investment. The results of the research point to high levels of ownership concentration in the financial institutions in Brazil.
Saving face and group identity

Are people willing to sacrifice resources to save one’s and others’ face? In a laboratory experiment, we study whether individuals forego resources to avoid the public exposure of the least performer in their group. We show that a majority of individuals are willing to pay to preserve not only their self- but also other group members’ image, even when group identity is minimal. When group identity is made more salient, individuals help regardless of whether the least performer is an in-group or an out-group. In contrast, people are less likely to sacrifice for individual strangers, showing a major role for group identity and reputation concerns within groups relative to an interpretation in terms of moral norms.
Deep ocean mass fluxes in the coastal upwelling off Mauritania from 1988 to 2012: variability on seasonal to decadal timescales

Abstract. A more than two-decadal sediment trap record from the Eastern Boundary Upwelling Ecosystem (EBUE) off Cape Blanc, Mauritania, is analysed with respect to deep ocean mass fluxes, flux components and their variability on seasonal to decadal timescales. The total mass flux revealed interannual fluctuations which were superimposed by fluctuations on decadal timescales. High winter fluxes of biogenic silica (BSi), used as a measure of marine production (mostly by diatoms) largely correspond to a positive North Atlantic Oscillation (NAO) index (December–March). However, this relationship is weak. The highest positive BSi anomaly was in winter 2004–2005 when the NAO was in a neutral state. More episodic BSi sedimentation events occurred in several summer seasons between 2001 and 2005, when the previous winter NAO was neutral or even negative. We suggest that distinct dust outbreaks and deposition in the surface ocean in winter and occasionally in summer/autumn enhanced particle sedimentation and carbon export on short timescales via the ballasting effect. Episodic perturbations of the marine carbon cycle by dust outbreaks (e.g. in 2005) might have weakened the relationships between fluxes and large-scale climatic oscillations. As phytoplankton biomass is high throughout the year, any dry (in winter) or wet (in summer) deposition of fine-grained dust particles is assumed to enhance the efficiency of the biological pump by incorporating dust into dense and fast settling organic-rich aggregates. A good correspondence between BSi and dust fluxes was observed for the dusty year 2005, following a period of rather dry conditions in the Sahara/Sahel region. Large changes of all bulk fluxes occurred during the strongest El Nino-Southern Oscillation (ENSO) in 1997–1999 where low fluxes were obtained for almost 1 year during the warm El Nino and high fluxes in the following cold La Nina phase. For decadal timescales, Bakun (1990) suggested an intensification of coastal upwelling due to increased winds (''Bakun upwelling intensification hypothesis''; Cropper et al., 2014) and global climate change. We did not observe an increase of any flux component off Cape Blanc during the past 2 and a half decades which might support this. Furthermore, fluxes of mineral dust did not show any positive or negative trends over time which might suggest enhanced desertification or ''Saharan greening'' during the last few decades.
Secure GPRS Data Systems Based on 3D-Discrete Wavelet and Multiwavelet Transformations

This paper shows a new efficient data delivery method based on three dimensional discrete Multiwavelet transformations Critically Sampled (3D-DMWTCS). This method was been done by get the data from any data source then catted the stream data to a packets of A certain length then each of these packet will convert to a square matrix, and then collected these square matrices in three dimensional matrix form. The 3D - discrete Multiwavelet transforms Critically Sampled (3D-DMWTCS) will be applied to each three dimensional matrix form and the output of this procedure will be also in three dimensional matrix forms and contain 3D-DMWTCS coefficient as real numbers. After this stage, the 3D matrix will be converting to square matrix and then to serial data stream of samples, then will be sending through USB port to SIM908 GSM GPRS module that must secure a connection between two or more communication points. As well as this encryption method can be done using three dimensional discrete wavelet transformations (3D-DWT) and (2D-DMWTCS) and (2D-DWT). The purposed of these methods is to maintain the confidentiality of the information sent, whether it is written texts, or data, or talk speech, and it is done with a high data rate and excellent coding. It is impossible or difficult to decrypt these methods without knowing how these encryption systems are build. The decryption is done by extracting the encrypted data from the Multiwavelet decomposition vector using the algorithm of inverse of 3D-Discrete Multiwavelet Transformation. The encrypted messages that send to other points consists 3D-DMWTCS decomposition vector. The encryption key that used in this method is 3D-DMWTCS method so the decryption key will be 3D-IDMWTCS. Due to the GSM GPRS mobile communications systems mostly use OFDM technology, therefore these technology has been used in the designed of wireless communication transceivers system using MATLAB2014a to simulate GSM GPRS under multichannel types and run the simulations to determine the specifications of these cryptographic systems under various conditions. The simulation results proved that these methods are retrieving the security and improve the performance of the communications system.
Pulse shape analysis of neutron signals in Si-based detectors

A series of test experiments on three different Si-based neutron detectors, namely a 1-d 128 channel, 0.5 mm space resolution Si microstrip sensor coupled to natural Gd converter, a medium size ? 1 cm2 PIN diode coupled to nGd2O3 or 157Gd2O3 converters, and a SiPM photomultiplier coupled to neutron scintillators, are presented to show the performances of this class of devices for thermal neutron detection. A pulse shape analysis method, designed to improve the performance of these devices by an optimized discrimination of the neutron signals from noise and background radiation, is proposed, described and tested. This study is aimed to real time applications and single event storage of the neutron information in time of flight instrumentation.
A New Simple Proof of the No-arbitrage Theorem for Multi-period Binomial Model

Binomial option pricing model is one of the widely used models to price option contracts, which are commonly employed to hedge against risks in the insurance field. One of the main underlying assumptions of the binomial model is the no-arbitrage condition. This condition simply provides a necessary and sufficient condition for the model to be free of arbitrage opportunities. Previous attempts were made to assess the viability of this assumption. But they were quite complicated and lengthy which tend to obscure the underlying meaning, and may appear to be daunting and inaccessible to the general audience. In this paper, we supply a clear, clean and simple proof using only pre-trigonometric algebra.
Effects of Knowledge Acquisition, Information Capability and Relationship Quality on Product Innovation Flexibility Among Manufacturing Firms in Malaysia

Knowledge management is the process of identifying, creating, assimilating and applying corporate knowledge to take advantage of new opportunities and enhance organizational performance. It involves both internal and external organizational capabilities. This study focuses on information capability, knowledge acquisition and relationship quality as capabilities pertinent to organisations aiming to achieve greater product innovation flexibility. Understanding and improving product innovation flexibility is crucial in the context of Malaysia in order to enable the nation to be at par with other countries enjoying better knowledge capital. Central tenets in building knowledge capital are creativity and innovation. The study is carried out in the manufacturing arena specifically on Electrical and Electronics (E&E) subsector as this subsector has achieved remarkable growth and has significant influence over the Malaysian economy. Quantitative research method using survey instrument was adopted in this study. Interestingly, the findings from this study revealed only knowledge acquisition and relationship quality as having significant relationship with product innovation flexibility. The findings are important to research and practice. Firms setting out to improve product innovation flexibility should pay careful attention to knowledge acquisition and relationship quality.
Towards association rules for XML documents

In this work we propose a flexible approach to extract and evaluate association rules on XML documents. We describe two kinds of association rules: structural associations and value associations. A structural association allows one to capture the similarity of an XML document with respect to a given structure, while a value association allows one to capture the similarity of the information contained in the XML document with respect to a given scenario. Moreover, we show how it possible to compose these associations in order to describe complex association rules on XML documents.
The Death of Accounting: Or Has the Announcement Been Greatly Exaggerated?

This paper examines whether the relevance of accounting information for valuation and systematic risk assessment has declined in Australian during the last thirty years. Motivated by professional and analyst concerns that the relevance of accounting earnings and (possibly) balance sheets have continuously declined over time, a number of recent research papers appear to confirm this contention. In contrast, we find the value relevance of accounting earnings has not declined over time. Rather the nature of the relationship with stock prices has changed such that a linear model does not fully abstract the association. Once, the transitory components within the earnings stream are controlled, the relationship becomes as stable as the book value relationship. Moreover, the long-term risk relevance of accounting information has remained relatively stable over the last thirty years. We also find evidence of firm size and leverage effects
Performance of Small Scale Model Slopes in Shaking Table Tests

The shaking table tests are conducted on small scale embankment slopes to study their behavior under dynamic conditions. Medium grained local sand with a water content of 3% is used in the study. The slope angle for the model slope is kept at 35 0 with three slope heights of 0.15, 0.18 and 0.21 m. All the three slope models are tested under the peak ground acceleration of 0.1 g. The acceleration and deformation at the base and the crest of model slopes are monitored to find the responses of embankments under dynamic condition. The failure surfaces developed during the induced motion are fairly shallow and confined within the slope surfaces. The increase in amplitude of acceleration toward the outward slope direction was observed in shaking table tests. The crest displacement history as observed in the laboratory test is well compared with numerical analysis.
Analysis of Button Bit Wear and Performance of Down-The-Hole Hammer Drill

This work investigates bit button wear and performance of Down-The Hole Hammer (DTH) drill in Navachab Gold Mine, Namibia. Rock samples obtained were tested in the laboratory for chemical composition, equivalent quartz content and compressive strength. Schmidt hammer was used to determine the rebound hardness values of the selected rocks. The specific energy was determined by using empirical equation. The length of insert buttons on the surface of the drill bits were measured by using digital vernier caliper at regular intervals as drilling operation progressed and wear rates were correlated with the rock properties. Silica content varied from 71.34 – 71.83% and 83.25 – 83.56% for oxidised and non-oxidised schist respectively. The equivalent quartz content was estimated to 72.30% for oxidised schist and 64.20% for non-oxidised schist. The highest wear rate was experienced on the non-oxidised schist having equivalent quartz content of 72.30%. This revealed that wear of rock drill bit is influenced by rock properties. Uniaxial compressive strength varied from 123 to 194 MPa. The strength characteristics of these rocks varied from medium to high strength. Rebound hardness values from the LType schmidt hammer ranged from 42 to 58 for oxidised and non-oxidised schist. Rebound hardness values obtained from N-Type schmidt hammer varied from 50 to 58 for oxidised and non oxidised schist. The specific energy varied from 6.0 MJ/m 3 for oxidised schist to 12.5 MJ/m 3 for non-oxidised schist. Moreso, wear rate varied from 0.0284 - 0.1045 mm/m for oxidised and non oxidised schist respectively. The result of correlation matrix revealed that uniaxial compressive strength, equivalent quartz content and silica content are dominant rock properties affecting wear rate of bit button of DTH drill. Keywords: Wear, Button, Down-The-Hole, Drill, Performance