Miracle-dz/UniFAR-FTUs huggingface dataset:
Interaction of living cells with electric pulses: Parameters and possible applications

Remarkable improvements have been seen recently towards the applications of pulsed electric fields in permeabilizing the cell membranes. Under the normal functional activities of a living cell, the transmembrane potential is about -30 to -90 millivolts. External electric fields can induce on a living cell an extra component of transmembrane voltage. The magnitude of the added component is proportional to the strength of the external field. Both the resting and the induced component are superimposed during the incidence of the external field. The induced component will be dependent on the position, shape, and orientation of the cells with respect to the electric field. In suspensions, it also depends on the volume fraction occupied by the cells. The latent period between exposure and induction is in the order of microseconds but it can last longer if cells are in low conductivity medium. It should be also mentioned that as a consequence of this latent period, pulsed electric fields with frequencies more than 1 MHz or pulse durations shorter than 1 μs the induced transmembrane potential is inversely proportional to the frequency of the applied field and directly proportional to the pulse duration. In gigahertz range, or pulses in nanosecond range, induced voltage inside the cell become comparable or even greater than that induced on the plasma membrane. Low intensity and long duration electric pulses increase the electrophoretic lateral mobility of charged molecules in the membrane. In this review, principles and some applications of pulsed electric fields with their biological end points are discussed.
Vietnamese Speaker Authentication Using Deep Models

Speaker Authentication is the identification of a user from voice biometrics and has a wide range of applications such as banking security, human computer interaction and ambient authentication. In this work, we investigate the effectiveness of acoustic features such as Mel-frequency cepstral coefficients (MFCC), Gammatone frequency cepstral coefficients (GFCC), and Linear Predictive Codes (LPC) extracted from audio streams for constructing feature spectral images. In addition, we propose to use the deep Residual Network models for user verification from feature spectrum images. We evaluate our proposed method under two settings over the dataset collected from 20 Vietnamese speakers. The results, with the Equal Error rate of around 4%, have demonstrated that the feasibility of Vietnamese speaker authentication by using deep Residual Network models trained with GFCC spectral feature images.
How to become a leader in higher education

The aim of this paper is to show how it is possible to create a focused development management strategy, based on innovative case study teaching method. This paper will present an example applied by Faculty of Organizational Sciences, University of Belgrade, leader in its field. The results achieved by students’ teams in past few years, at the biggest international case study competitions, provided Faculty with an opportunity to create a suitable development strategy based upon organizing international case studies competition - BBICC. The work is based on the qualitative results collected by w orking with students, facul ty and company representatives.
Investment In Human Capital And Growth In Nigeria (1980- 2012)

This study attempts to examine the relationship between real gross domestic product and government expenditure in human capital investment (which includes expenditure on education, health and other social and community services) between 1980 and 2012. The study further disaggregated total government expenditure into capital and recurrent expenditure. A vector autoregressive (VAR) approach was adopted as the methodology. Johansen cointegration test suggests that RGDP, CEHCI and REHCI are cointegrated in Nigeria. Granger causality test reveals that there is causality running from CEHCI and REHCI to RGDP in the long run. Moreover, there is a bi-directional causality between CEHCI and RGDP in the long run but a single directional running from CEHCI to REHCI. The variance decomposition generated suggests that CEHCI is relatively more important than REHCI in explaining the variations in economic growth (RGDP) as CEHCI also proved to explain the variations in REHCI than economic growth. The impulse response function confirmed that a shock to CEHCI and REHCI has a positive effect on economic growth in Nigeria. Government should therefore increase capital expenditure to human capital investment.
A Semi-Structured Process for ERP Systems Evaluation: Applying Analytic Network Process

This paper illustrates a four-step semi-structured process for ERP system evaluation. We suggest using the Analytic Network Process (ANP) for qualitative reviews of ERP, reviews involving multiple criteria and interdependency of properties. The ANP method is based on the feedback system framework of the well-known Analytic Hierarchy Process. A case study indicates that the evaluated aspects of the method are feasible and the method improves the quality of ERP system selection compared with traditional approaches.
Theoretical Investigation of Structural and Electronic Properties of Ruthenium Azopyridine Complexes Dyes for Photovoltaic Applications by Using DFT and TD-DFT Methods

In this work, a series of ruthenium azopyridine complexes was studied theoretically as a sensitizer in Dye Sensitized Solar Cells (DSSCs) using density functional theory (DFT) and time-dependent DFT (TD-DFT). These dyes derive from ruthenium azopyridine complex RuCl2(Azpy)2 considered as the reference by grafting an anchoring group (-COOH). Hens, 4-Hmazpy, 5-Hmazpy and O-Hazpy ligands as well as Azpy were studied. For the four ligands, 20 isomers expected are studied. In order to explore their photoelectrical properties, the ground state and excited state properties of the isolated dyes have been calculated at B3LYP/LANL2DZ level. And the same work was done with the dye RuCl2(5Hmazpy)2 in interaction with titanium dioxide. Comparing to N3, the key parameters including the light harvesting efficiency (LHE), the electron injection driving force ΔGinject , the regeneration driving force ΔGregen , the open circuit voltage VOC, the life time τ and adsorption energy were all scrutinized in detail. It results from this calculation that the ruthenium azopyridine complexes can be used as sensitizer in DSSCs. This work has highlighted the predictive and the guiding role of the theoretical approach in the design and the conception of new dyes for solar cells.
Modern regularization techniques for inverse modelling: a comparative study

Regularization techniques are used for computing stable solutions to ill-posed problems. The well-known form of regularization is that of Tikhonov in which the regularized solution is searched as a minimiser of the weighted combination of the residual norm and a side constraint-controlled by the regularization parameter. For the practical choice of regularization parameter we can use the L-curve approach, U-curve criterion introduced by us [1] and empirical risk method [2]. We present a comparative study of different strategies for the regularization parameter choice on examples of function approximation by radial basis neural networks. Such networks are universal approximators and can learn any nonlinear mapping. e.g. representing an magnetic inverse problem. Some integral equations of the first kind are considered as well.
Thesis for the Degree of Master of Science Spray Drying in Cyclone Separators Niklas Persson

A gas-solid cyclone separator is a separation device that separates solid particles from a gas phase by the use of a centrifugal force field. In traditional spray drying a cyclone separator is often included in a succeeding separation step, after a spray drying chamber. This thesis a study of whether spray drying in cyclone separators is possible. If the spray drying can be conducted in the cyclone, the spray drying chamber can be removed from process and the investment cost lowered. The flow field in the studied cyclone was simulated in both two and three dimensions, with good agreement in the middle of the cyclone, where the region of interest is located. Single particle simulations, together with hand calculations and a factorial designed parameter study showed that spray drying is possible in the studied cyclone. However, for lower gas velocities than typical operational conditions and for droplets in the order of magnitude of a normalized diameter of 0.22 and smaller, where the droplet diameter is normalized against the largest droplets in the current system. By increasing the normalized cyclone diameter from 1.4 to 1.7, droplets up to the size of 0.5 can be dried before impinging the wall. The results were in compliance with experiments. Acknowledgements This thesis has been performed at ALTEN AB and Chalmers University of Technology in Göteborg, Sweden, during the period September to December 2013. The work has been supervised by Dr. Mohammad El-Alti at ALTEN AB, Professor Bengt Andersson and Assistant Professor Ronnie Andersson at Chalmers University of Technology. I wish to acknowledge the help provided by my supervisors Dr. Mohammad El-Alti, Professor Bengt Andersson and Assistant Professor Ronnie Andersson for their help and guidance throughout the project. Last but not least I would like to thank the members of the analysis and simulation group at ALTEN AB and my thesis colleague Erik Andersson.
Group climate, cohesion and curative climate. A study on the common factors in group process and their relation with members attachment dimensions

This study examined the relationships among group process measured by the Group Climate Questionnaire, the Cohesion to the Therapist Scale and Cohesion to the Group Scale, and the Curative Climate Instrument to explore higher order factors that explained the group relationship, in a sample of 91 female university students attending 6 interpersonal growth groups. Furthermore, the study examined how group member’s attachment dimensions, anxiety and avoidance, were associated to his/her perception of group relationship. We found that a three-factor model consisting of positive bond, positive work, and negative relationship, approached conventional standards of model fit. Moreover, the results of the study also supported a model with three latent second-order constructs (bond, work, and negative relationship) and two structural perspectives as first-order factors (member-group and member-leader). Contrary to the hypothesis, the theoretical model on the associations between individual’s attachment dimensions and group process did not fit well to the data. The results of the current study further supported the cross-cultural validation of a model with both quality and structure dimensions of group relationship. Implications for group process research are discussed.
$F$-zips with additional structure

An $F$-zip over a scheme $S$ over a finite field is a certain object of semi-linear algebra consisting of a locally free module with a descending filtration and an ascending filtration and a $\Frob_q$-twisted isomorphism between the respective graded sheaves. In this article we define and systematically investigate what might be called "$F$-zips with a $G$-structure", for an arbitrary reductive linear algebraic group $G$. These objects come in two incarnations. One incarnation is an exact linear tensor functor from the category of finite dimensional representations of $G$ to the category of $F$-zips over $S$. Locally any such functor has a type $\chi$, which is a cocharacter of $G$. The other incarnation is a certain $G$-torsor analogue of the notion of $F$-zips. We prove that both incarnations define stacks that are naturally equivalent to a quotient stack of the form $[E_{G,\chi}\backslash G_k]$ that was studied in an earlier paper. By the results obtained there they are therefore smooth algebraic stacks of dimension 0 over $k$. Using our earlier results we can also classify the isomorphism classes of such objects over an algebraically closed field, describe their automorphism groups, and determine which isomorphism classes can degenerate into which others. For classical groups we can deduce the corresponding results for twisted or untwisted symplectic, orthogonal, or unitary $F$-zips. The results can be applied to the algebraic de Rham cohomology of smooth projective varieties (or generalizations thereof such as smooth proper Deligne-Mumford stacks) and to truncated Barsotti-Tate groups of level 1. In addition, we hope that our systematic group theoretical approach will help to understand the analogue of the Ekedahl-Oort stratification of the special fibers of arbitrary Shimura varieties.
A Bayesian Approach to Zero-Numerator Problems Using Hierarchical Models

The rule of three gives 3/n as the upper 95% bound for the success rate of the zero-numerator problems. However, this bound is usu- ally conservative although it is useful in practice. Some Bayesian methods with beta distributions as priors have been studied. However, choosing the parameters for the priors is subjective and can severely impact the corre- sponding posterior distributions. In this paper, some hierarchical models are proposed, which provide practitioners other options for those zero-numerator problems.
MULTIPLE EFFECTS OF COMMUNITY AND HOUSEHOLD CROWDING

This article analyses the interactive effects of community and residential crowding on psychological distress and on residential satisfaction, both mediated by social support. Two studies were carried in which 191 and 259 Malaga city residents (Spain), participated, respectively. By means of structural equations models the moderating and mediating effects are analysed, including the measurement error. The first study shows that there is a potentiation effect of combined crowding on psychological distress, with a weak attenuation effect due to social support. In the second study there is also a potentiation effect of community and residential crowding that diminishes residential satisfaction, and also a weak mediator effect due to social support. Exposure to the two types of crowding potentize their negative effects with social support working as a weak attenuator.
Towards Excellent Work Behavior In The Health Tourism Hospitals In Malaysia

The purpose of this paper is to provide a conceptual analysis of group culture and work behavior in the health tourism hospitals. This paper applies social information processing theory to propose the research framework of group culture and work behavior. Our conceptual analysis suggests that individuals who work in an organization with group culture are more likely to engage in excellent work behavior whereas individuals who work in an organization without group culture are less likely to engage in excellent work behavior. Given that work behavior has become an important topic in the health tourism hospitals; this paper proposes a theoretical framework to serve as a basis for future research and also offers practical implications to the
Evaluation of the potential bioactivity of an endophytic bacteria isolated from Magnolia dealbata Zucc

During the past 60 years, the preferred sources for isolation of new bioactive producing microbes have been soil, air and water. Recently, the search has focused on non-conventional sources (geysers, oceans, caves, animals, and plants). Plant associated microorganisms have proven to be important for discovery of novel bioactive compounds ISSN: 2319-7706 Volume 4 Number 4 (2015) pp. 515-525 http://www.ijcmas. com
Bank Financing for SMEs – Lessons from the Literature

This paper surveys the recent literature on the relationship between SMEs, financial deepening and economic development. While a large SME sector is not associated with faster economic growth or poverty alleviation, financial deepening can have a pro-growth and pro-poor impact by alleviating SMEs’ financing constraints, enabling firm entry and entrepreneurship, and better resource allocation. It is important to differentiate between different segments of the SME population, most critically between subsistence micro entrepreneurs and transformational entrepreneurs. This paper also discusses the importance of market structure, competition and regulations for SMEs and their access to finance over the business cycle and during crises.
A High Isolation MIMO Antenna without Decoupling Structure for LTE 700 MHz

This paper presents a long-term evolution (LTE) 700 MHz band multiple-input-multiple-output (MIMO) antenna, and high isolation between the two symmetrical antenna elements is obtained without introducing extra decoupling structure. Each antenna element is a combination antenna of PIFA and a meander monopole antenna. The end of the PIFA and the meander monopole antenna are, respectively, overlapped with the 50 Ω microstrip feed line, the two overlapping areas produce additional capacitance which can be considered decoupling structures to enhance the isolation for the MIMO antenna, as well as the impedance matching of the antenna elements. The MIMO antenna is etched on FR4 PCB board with dimensions of 71 × 40 × 1.6 mm3; the edge-to-edge separation of the two antenna elements is only nearly 0.037 λ at 700 MHz. Both simulation and measurement results are used to confirm the MIMO antenna performance; the operating bandwidth is 698–750 MHz with dB and dB.
Importance of extracellular organic carbon production in the total primary production by tidal-flat diatoms in comparison to phytoplankton

Microphytobenthos, mainly benthic diatoms, produce mucilages containing extracellular polymeric substances (EPS) on the cell surface. The ratios of particulate organic carbon ( 14 C-POC) and total extracellular organic carbon (TEOC; the total of extracellular dissolved organic carbon [ 14 C-EDOC] and colloidal organic carbon [ 14 C-Colloidal-OC] extracted with EDTA) to total primary production (TPP) were measured using 14 C-tracer to estimate the ratio for each fraction of organic carbon photosynthetically produced by microphytobenthos and phytoplankton. TEOC for microphytobenthos ranged from 42 to 73% of TPP and was made up mostly of 14 C-Colloidal-OC. The TEOC/TPP for phytoplankton ranged from 1.5 to 22%. The ratio of 14 C-EPS to 14 C-Colloidal-OC for microphytobenthos was 41 to 53%, and for phytoplankton was 4.4 to 24%. Algal species in the transitional phase were used for experiments because microphytobenthos Nitzschia hybridaeformis most abundantly produced TEOC and EPS in the transitional phase during growth in experiments studying the effect of the growth phase. By using EDTA for the extraction of extracellular organic matter, it becomes clear that excretion of colloidal organic matter by microphytobenthos has always been underestimated. These results suggest that the large amount of TEOC containing EPS produced by microphytobenthos plays a more important role than secretion of phytoplankton as a source of organic carbon for heterotrophic organisms in the intertidal-flat ecosystem.
Genotype specificity in nitrogen nutrition of malting barley

A three-year trial (2003-2005) was conducted under agro ecological conditions of Timocka Krajina (the experiment farm of Technological Research Center in Zajecar). Research object were six malting barley genotypes, which were top-dressed with the following amounts of nitrogen in the course of growing season: 40, 60, 80 and 100 kg ha-1. A non-fertilized variant served as a control. The obtained results indicated that the tested genotypes reacted to increased amounts of nitrogen by changing their morphological and biological characteristics as well as the technological values of grain. The effectiveness of the applied nitrogen depended significantly on the distribution of rainfall in periods of highest water uptake by malting barley.
Once and for all: the curious role of probability in the Past Hypothesis

The Past Hypothesis defended by David Wallace in his 2011 account of macroscopic irreversibility is technically distinct from, but in the same spirit as, that of David Albert in his 2000 book Time and Chance. I am concerned in this essay with the role of objective probability in both accounts, which I find obscure. Most of the analysis will be devoted to the classical treatments by both authors, but a final section will question whether Wallace's quantum version involving unitary dynamics removes this obscurity.
Do Firms Share the Same Functional Form of Their Growth Rate Distribution? A Statistical Test

We propose a hypothesis testing procedure to investigate whether the same growth rate distribution is shared by all the firms in a balanced panel or, more generally, whether they share the same functional form for this distribution, without necessarily sharing the same parameters. We apply the test to panels of US and European Union publicly quoted manufacturing firms, both at the sectoral and at the subsectoral NAICS level. We consider the following null hypotheses about the growth rate distribution of the individual firms: (i) an unknown shape common to all firms, with all the firms sharing also the same parameters, or with the firm variance related to its firm size through a scaling relationship, and (ii) several functional shapes described by the Subbotin family of distributions. Our empirical results indicate that firms do not have a common shape of the growth rate distribution at the sectorial NAICS level, whereas firms may typically be described by the same shape of the distribution at the subsectorial level, even if the specific shape may not be the same for different subsectors.
EFFECT OF MARTENSITE VOLUME FRACTION ON THE WORK HARDENING BEHAVIOR OF DUAL PHASE STEELS

The strain hardening exponent (n) in the stress-strain relationship of metals and alloys is an indicator of their stretchability during press forming operations. The larger the n value, the more the material can deform before instability, and the material can be stretched further before necking starts. This paper aims to investigate work hardening behavior of dual phase steels. A series of dual-phase (DP) steels containing ferrite and martensite with different volume fractions of martensite (Vm) were produced by intercritical heat treatment. Work hardening behavior was analyzed in terms of Holloman analysis. Results showed that in DP steels with less than %50 V m, the work hardening took place in one stage and the work hardening exponent increased with increasing Vm. By increasing the volum fraction of martensite (V m>%50) more than one stage will be observed in the Hollomon analysis.
Study on Cloud Storage based on the MapReduce for Big Data

Big Data has been one of the current and future research frontiers. Data sets grow in size because they are increasingly being gathered by ubiquitous informationsensing mobile devices, aerial sensory technologies, remote sensing, software logs, cameras, microphones, radiofrequency identification readers, wireless sensor networks, and so on. Big Data has changed the way we capture and store data, including data storage device, data storage architecture, data access mechanism. Cloud computing moves the application software and databases to large data centers, where the management of the data and services may not be fully trustworthy. Storage is one of the major issues which hamper the growth of cloud. To deal with Big Data storage problems we discuss cloud storage platform based on the MapReduce for Big Data. KeywordsBig Data; cloud storage; MapReduce; Hadoop;