Miracle-dz/UniFAR-FTUs huggingface dataset:
Ring-shear studies of till deformation: Coulomb-plastic behavior and distributed strain in glacier beds

Abstract A ring-shear device was used to study the factors that control the ultimate(steady) strength of till at high shear strains.Tests at a steady strain rate and at different stresses normal to the shearing direction yielded ultimate friction angles of 26.3° and 18.6° for tills containing 4% and 30% clay-sized particles, respectively Other tests at steady normal stresses and variable shear-strain rates indicated a tendency for both tills to weaken slightly with increasing strain rate. This weakening may be due to small increases in till porosity. These results provide no evidence of viscous behavior and suggest that a Coulomb-plastic idealization is reasonable for till deformation. However, viscous behavior has often been suggested on the basis of distributed shear strain observed in subglacial till. We hypothesize that deformation may become distributed in till that is deformed cyclically in response to fluctuations in basal water pressure. During a deformation event, transient dilation of discrete shear zones should cause a reduction in internal pore-water pressure that should strengthen these zones relative to the surrounding till, a process called dilatant hardening. Consequent changes in shear-zone position, when integrated over time, may yield the observed distributed strain.
About the humic acids and thermal behaviour of some humic acids

Abstract: In this paper we investigate thermal behaviour of four samples of hu- mic acids: two samples was prepared in laboratory and two samples were commercial humic acids. Thermal analysis measurements (TG, DTG, DTA and DSC) of humic acids were carried out in dynamic air atmosphere. On relate the thermogravimetric
Osl Dates and Heavy Mineral Analysis of Upper Quaternary Sediments from the Valleys of the Ér and Berettyó Rivers

Osl Dates and Heavy Mineral Analysis of Upper Quaternary Sediments from the Valleys of the Ér and Berettyó Rivers The study of the evolution of the river network in the Great Hungarian Plain has been based on sedimentological, neotectonical, morphological investigations, heavy mineral analysis and complementary OSL dating. The study area extends from the Körös sub-basin into the Ér and Berettyó river valleys which are situated northeast from the subsiding basin and northwest from the uplifting Apuseni Mountains. The OSL ages provide evidence that a large river run in the Ér-valley at least from 46±4 to 39±4 ka. It deposited garnet and magnetite-ilmenite-rich sediments, similar to the recent Berettyó, Ér and Sebes- Körös rivers and less intensive the modern Tisza river. These sediments originated from the nearly located metamorphic and Neogene volcanic rocks and contain some reworked older clastic sedimentary rocks from the northern part of the Apuseni Mountains. These OSL ages fit the active tectonic phase of the Érmellék depression. Loess is 49-47, 44, 39 and 25 ka old and aeolian sands 10 to 9 ka were dated. Their heavy mineral composition and that of fluvial sands is similar.
The NCEP GODAS Ocean Analysis of the Tropical Pacific Mixed Layer Heat Budget on Seasonal to Interannual Time Scales

Abstract The mixed layer heat budget in the tropical Pacific is diagnosed using pentad (5 day) averaged outputs from the Global Ocean Data Assimilation System (GODAS), which is operational at the National Centers for Environmental Prediction (NCEP). The GODAS is currently used by the NCEP Climate Prediction Center (CPC) to monitor and to understand El Nino and La Nina in near real time. The purpose of this study is to assess the feasibility of using an operational ocean data assimilation system to understand SST variability. The climatological mean and seasonal cycle of mixed layer heat budgets derived from GODAS agree reasonably well with previous observational and model-based estimates. However, significant differences and biases were noticed. Large biases were found in GODAS zonal and meridional currents, which contributed to biases in the annual cycle of zonal and meridional advective heat fluxes. The warming due to tropical instability waves in boreal fall is severely underestimated owing to use of a.
FINANCIAL CRISIS AND STOCK MARKET LINKAGES

This paper investigates interdependencies and linkages between international stock markets in the short-run. Thus, twelve European and non-European markets were selected, and the period from 4. October 1999 to 30 June 2011 was chosen, which includes the Dot-Com crisis and the recent Global Financial Crisis. To investigate interdependence and dynamic linkages between stock markets, a vector autoregressive model, the concept of Granger causality and impulse-response functions were considered. We concluded that the global financial crisis contributes to the intensification of the interdependence between stock markets.
Effect of surface treatment on electrical conductivity of carbon black filled conductive polymer composites

Two different types of surface modifiers, 3-aminopropyltriethoxysilane and formamide, were applied to carbon black (CB) particles to lower electrical resistivity of polymer composites prepared by treated CB. Two different matrices, low-density polyethylene and nylon 6, were chosen to compound with surface modified CB. Surface energy of CB was increased by adding amine or amide functional groups during surface treatment of CB. According to electron spectroscopy for chemical analysis (ESCA), chemical modification in surface chemistry of CB was obtained with the chemicals used for the treatment due to the nitrogen atoms in their structures, which may act as dopant atom. As a result of this, electrical resistivity of composites prepared by treated CB decreased. In addition, there was not any significant change in tensile strength and tensile modulus of the composites with the surface treatment. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
Uncertainty quantification using cloud computing for Monte Carlo parallelization

Due to its simplicity and good statistical results, the Monte Carlo (MC) method is the most commonly technique used for uncertainty quantification. However, its computational cost is significant, and, in many cases, prohibitive. Fortunately, the MC algorithm can be can be parallelized, which may allows its use in complex simulations. In this sprit, this work presents a methodology for the parallelization of MC method in a cloud computing setting. The methodology is illustrated on a stochastic problem of structural dynamics, and the simulation results show good accuracy for low-order statistics. Also, this methodology shows a good performance in terms of processing-time and storage space usage.
Perspectives on value creation and coopetition

Coopetition, emphasizing joint value creation and cooperation between competing firms, is still a relatively new concept in the field of management studies. Value creation is strongly associated with win proposals. Thereby in seminal studies of coopetition, win proposals, such as win-win and also win-lose logics, have been already presented (see, e.g. Brandenburger & Nalebuff, 1996). This conceptual paper introduces and re-evaluates different types of collaborative and coopetitive activities by exploiting and developing value creation typologies. The introduced approach participate coopetition discussions and, for its part, reorganizes coopetition dimensions of management by also using supply chain framework. Furthermore, this article provides interesting subjects for further research.
A formal approach for safe controllers analysis

Formal verification of real-time systems software is a complex and hard task, for several reasons. There are multiple works developed in the domain of formal verification of real-time systems behavior by model-checking, and some software tools were developed for this purpose. One of the most complex problems to be solved in the analysis of real-time controllers is the conversion of controllers programming languages in formal languages, for instance finite timed automata, in order to be used as inputs of the existing model-checkers. If the methodology of programming is well developed and known, this task can be improved in order to improve safety and reliability of the obtained controllers. Moreover, most real-time systems (especially embedded systems that we intend to study) are programmed in C language. This paper aims to establish the methodology of creating C code programs, from SFC specification formalism, taking into account the formal verification of desired properties for the system behavior, using the Model-Checking technique and the model-checker UPPAAL.
Application of Taguchi method to determine hybrid welding conditions of aluminum alloy

This paper presents a systematic approach to determine optimal process parameters (welding direction, laser power , laser focus, voltage, wire feed rate, root opening tolerance, and traveling speed) associated with hybrid welding (Nd: Y AG-GMA) of aluminum alloy (AA5052-H32) using T aguchi method. Optimum welding parameters determined by T aguchi method improved welding performance as compared to those from preliminary set of experimental parameters.
Economic Impacts of Oil Price Fluctuations in Developed and Emerging Economies

This paper assesses the impact of crude oil price movements on two macro-variables, GDP growth rate and the CPI inflation rate, in three countries: the US and Japan (developed economies) and China (emerging economy). These countries were chosen for this research because they are the world’s three largest oil consumers. The main objective of this research is to see whether these economies are still reactive to oil price movements. The results obtained suggest that the impact of oil price fluctuations on developed oil importers’ GDP growth is much milder than on the GDP growth of an emerging economy. On the other hand, however, the impact of oil price fluctuations on China’s inflation rate was found to be milder than in the two developed countries that were examined.
The impact of leadership, management and power in an international knowledge-intensive organization O impacto da liderança, gestão e poder em uma organização internacional intensiva em conhecimento

The shift to knowledge economies and the boom of knowledge-intensive organizations with their expert employees pose new challenges for leadership and management of development work. What is the appropriate amount and form of managerial control that is needed in knowledge-intensive development work? This paper focuses on illuminating the kind of leadership and management efforts that either support or hinder advancing development projects. The results highlight the paradoxical role of power and control, and reveal that employees need freedom and yet strong guidance and managerial commitment to develop work in order to stay motivated. Implications for leading knowledge-intensive development are discussed.
Evaluation in Music Education in Greece

This paper is about Evaluation in Music Education as it is practiced in Greece. First of all, views and examples of evaluation in music in the Greek context are presented, as well as comments about the content of music lessons in Greek secondary schools. Second, informed by Swanwick’s views on the parameters of music education (‘literature studies’, ‘skill acquisition’, ‘composition’, ‘audition’ and ‘performance’) and his Theory of Musical Development, relating to the four layers of musical knowledge development (‘materials’, ‘expression’, ‘form’ and ‘value’, a model is proposed for evaluating the process of learning in music. This model combines Swanwick’s four layers, with the three parameters considered most significant for the development of musical knowledge (‘composition’, ‘audition’ and ‘performance’). The model is believed to be applicable not only in the Greek context, but also in other contexts, since it is based on a theory already successfully tested internationally in different environments.
Settlement length and temporal settlement patterns of juvenile cod (Gadus morhua), haddock (Melanogrammus aeglefinus), and whiting (Merlangius merlangus) in a northern North Sea coastal nursery area

Dorota K. Bastrikin1*†, Alejandro Gallego1, Colin P. Millar1, Imants G. Priede2, and Emma G. Jones1‡ Marine Scotland Science, Marine Laboratory, PO Box 101, 375 Victoria Road, Aberdeen AB11 9DB, UK University of Aberdeen, Oceanlab, Main Street, Newburgh AB41 6AA, UK *Corresponding author: tel: +44 1224 876544; fax: +44 1224 295511; e-mail: dorota.bastrikin@gmail.com Current address: BMT Cordah Ltd, Broadfold House, Broadfold Road, Bridge of Don, Aberdeen AB23 8EE, UK. Current address: National Institute of Water and Atmospheric Research Ltd (NIWA), PO Box 109-695, 269 Khyber Pass Road, Newmarket, Auckland 1149, New Zealand.
Study on the Deproteinization of Polysaccharides from Lethariella spp.

The objective of this study was to discuss the method for deproteinization of the polysaccharides from Lethariella spp. Based on the single factor experiment, the orthogonal design was applied to select the optimal condition for the deproteinization of polysaccharides. The deproteinization rate and polysaccharide retention rate was used as indexes which were determined by UV-Vis spectrometer. The optimal extraction conditions were as follows: (Ratio of n-butyl alcohol to chloroform was 0.20, dosage of mixture was 20%, deproteinization duration was 10 min and times of deproteinization were five. Under this optimal condition, deproteinization rate and polysaccharide retention rate of polysaccharides was 55.37% and 60.34%, respectively. The process was suitable and feasible for the deproteinization of polysaccharides in Lethariella spp. extreact.
Attribute Importance Research in Travel and Tourism: Are We Following Accepted Guidelines?

The purpose of this study is to examine the reporting practices and potential challenges in the measurement of attribute importance in travel and tourism research. The results indicate that a majority of studies evaluated in this study utilized Likert scaling which has a tendency to produce end-piling or upward bias. As such, it becomes more difficult to identify meaningful differences among attributes. Recommendations for addressing this potential limitation and for better reporting of results are provided.
Aerodynamic force on a vawt in dynamic stall by integration of the velocity field from 3C particle image velocimetry

The paper focuses on evaluating the feasibility of estimating loads on Vertical Axis Wind Turbine (VAWT) blades in dynamic stall by velocity data acquired with Particle Image Velocimetry (PIV). The work uses simulated velocity data from a Detached Eddy Simulation (DES) at space and time refinement equivalent to that obtained with PIV, thus estimating error associated. This research is part of a five step research on estimating loads on small VAWT integrated in the Urban Wind Energy research in DUWIND Delft University Wind Energy Research Institute.
Cross Cultural Online Shopping Consumer Behavior: Comparision of China and Turkey

In this paper we examine online shopping behavior of two developing countries, China and Turkey. Local cultures have strong effects on consumer behavior in online shopping. Thus examining the cultural effects and examining the differences between different cultures are crucial to propose international, competitive and successful marketing strategies and investments. We determined factors to reflect the cultural difference between Turkey and China in terms of attitude towards online shopping. Attitude towards online shopping is examined through online shopping amount and online shopping frequency. We proposed hypotheses based on the proposed factors. Each hypothesis is examined through the results of applied survey. We also conduct group-based factor analysis in order to examine the distribution-based differences between Turkey and China in terms of online shopping behavior of the customers.
Through the Looking Glass, and What OLS Found There: On Growth, Foreign Aid, and Reverse Causality

The cross-country literature on foreign aid effectiveness has relied on the use of instruments to distinguish causality from mere correlation. This paper uses simple non-instrumental techniques in the spirit of Granger to demonstrate that the main aid-growth connection is a negative causal relationship from growth to aid—-aid, that is, as a fraction of recipient GDP. Coarsely, when GDP goes up, aid/GDP goes down. The endogeneity of aid, long suspected, is real. Less understood is that adding certain common controls to regressions puts this relationship through the looking glass, flipping both its sign and apparent direction: aid seems to cause growth. Ideally, instrumentation expunges the endogeneity shown here. In practice, estimates of aid’s impact have run into problems. Autocorrelation in the errors is widespread, and can render endogenous lagged variables used as regressors or instruments. The pitfalls of “difference” and “system” include invalidity and proliferation of instruments. Multicollinearity in term pairs of interest, such as aid and aid2 or “project” and “program” aid, can amplify endogeneity bias. The combination of specification problems and widespread fragility (shown in earlier work) leads to pessimism about the ability of cross-country econometrics to demonstrate aid effectiveness. This does not rule an average positive effect, nor does it contradict the fact that aid has saved millions of lives, but it does suggest that the average effect on economic growth is too small to be detected statistically.
Structural variations in nanocrystalline nickel films

Abstract Nanocrystalline nickel films of technological importance have been grown on various liquid nitrogen-cooled substrates by magnetron sputtering with and without a substrate bias. The atomic structural and chemical studies have unveiled variations in inter- and intragranular structures under the different process conditions. The origin and the development of the crystallization process with and without the substrate bias voltage have been inferred from the results.
Corporate Governance Perception Index (CGPI) and Cost of Debt

Corporate Governance Perception Index (CGPI) is the ranking of good corporate governance by Indonesian Institute for Corporate Governance (IICG) with SWA magazine. Companies that follow the CGPI survey showed a willingness to become a trusted and open. This effort should be perceived positively by stakeholders. Some previous researches showed that a corporate governance has a significant impact on the lowering the cost of debt (Piot & Piera 2007; Sengupta & Bhojraj 2003; Ashbaugh & Skaife et al 2006). Therefore, this paper is aimed to search the benefit of GCG implementation to the cost of debt. All companies listed on the Indonesia Stock Exchange (IDX) which have a GCG score for survey period 2004-2009 are selected as a research sample. Other variables such as Debt to Asset (DA), Return on Asset (ROA), Sales Growth (Sgrowth), Firm Size (Fsize and Market to Book (MTB) are considered as control variables. The results do not support the hypothesis. Several explanations, including the low level of creditor’s confidence to the good corporate governance practices have been discussed to support the research findings.
Modelling of sound ﬁelds in enclosed spaces with absorbent room surfaces. Part I: performance spaces

This paper introduces a three-part report describing research into the use of Millington absorption coe(cid:129)cients in the computer modelling of sound ﬁelds in enclosed spaces with absorbent room surfaces. The historical background to the prediction of reverberation time is presented together with three types of computer models used in the investigation. In part one, the computer models are described, the Millington reverberation time formula is validated, Millington absorption coe(cid:129)cients are derived and the sound ﬁeld in a concert hall is predicted. This enables the accuracy of the three types of computer models to be compared and the e(cid:128)ect of applying di(cid:128)erent absorption coe(cid:129)cients to be studied. Part two of the report consists of an extensive investigation into the prediction of reverberation time in multiple conﬁgurations of an experimental room with absorbent material partially covering the room surfaces. This determined the accuracy of reverberation time formulae and the computer models using both standard and Millington absorption coe(cid:129)cients under controlled conditions. The ﬁnal part contributes a veriﬁcation of the accuracy of the predictions using Millington absorption coef-ﬁcients in a factory space with a barrier installed, and a reﬁned di(cid:128)raction model based on a ray-tracing model. # 1998 Elsevier Science Ltd. All rights reserved.
Hypothetical Quantum Wire of Hydrogen

A one dimensional quantum nano-wire of hydrogen is hypothetically demonstrated. This nanostructure device has been designed to perform at nanoscale with more efficiency than existing semiconductor based devices. Because this device is smaller and fabrication process is simpler, which are the primary requirements of semiconductor industry. The device has achieved a very flexible physical structure. A framework has been developed in this work that a device of completely non-metal element can behaves like a pure conductor depending on the atomic arrangement and a semiconductor without any significant dopant species presents. Basis function has been used as a computational tool for solving the Schrodinger's Equation for periodic solid composed of hydrogen. By using MATLAB we will produce the E(k)diagram which will give us the expected eigenvalues of the dispersion relation of the wires. A base calculation has been developed to calculate the bandstructure of a quantum wire. Hypothetical quantum wire of hydrogen is a one dimensional device designed in nanometer scale. Our main purpose is to illustrate the procedure for calculating the bandstructure for quantum wire by using the 1D model concept of quantum wire. Electronic structure of the hydrogen wire is demonstrated where numerical solution has been preferred instead of analytical solution for the device. The wire is a one dimensional solid composed of N hydrogen atoms which are actually a lattice of finite range whose unit cell is consisting one atom each. In this structure electrons are free to move only in the x direction and confined in both y- and z- directions. (1) This type of atomic arrangement simply forms a quantum wire of hydrogen atoms. The bandstructure has been calculated by solving Hamiltonian matrix eigenvalue equation. Finite difference method followed to find the eigenvalues of the matrix. (2) In this paper we have developed a quantum wire to investigate its conducting properties with help of the E-k diagram. We have plotted the E-k diagram from dispersion relation which shows the eigenvalues by using MATLAB. The resulting bandstructures of the quantum wire of hydrogen atom and quantum wire of hydrogen dimer establish the solid-state like material property. A model structure for nano-wire transistor of quantum wire of hydrogen has been proposed in this research.