Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysis of the causes of the momentum effect and their implications for the efficient market hypothesis

The Efficient Market Hypothesis has largely been discussed in financial literature. Some authors are in favor and others disagree, but one anomaly is particularly in contradiction with the market efficiency: the momentum effect. The main goal of this thesis is to contribute to the momentum puzzle in trying to explain the causes of asset price continuation on medium term. Double sorted portfolios on past prices and investor attention of stocks from the composition of S&P 500 are formed to demonstrate the superior performance of strategy based both on price and investor attention. The results confirm the influence of investor biases on the formation of momentum. An “investor attention effect” is discovered in the S&P 500 and proven to be only present in momentum stocks. However, differences in investor attention do not seem to completely explain the momentum effect, and should probably cause momentum with another factor such as a risk-based one. This study contradicts the Efficient Market Hypothesis, but emphasizes that this conclusion should be taken cautiously into account and further analyzed.
Study on the Effects of Upstream Flow Conditions and Clearance Sizes to Tip Leakage Flow in a Subsonic Large-Scale Rotor

To clearly clarify how it affects the detailed tip clearance flow and flow mechanism by varying the upstream boundary layer thickness and tip clearance size, numerical studies were performed on a subsonic rotor, which is used for low-speed model testing of one rear stage embedded in a modern high-pressure compressor. Firstly, available experimental data were adopted to validate the numerical method. Second, comparisons were made for tip leakage vortex structure, the interface of leakage flow/mainflow, endwall loss, isentropic efficiency and pressure-rise between different operating conditions. Then, effects of different clearance sizes and inlet boundary layer thicknesses were investigated. At last, the self-induced unsteadiness at one near-stall operating condition was studied for different cases. Results show that increasing the tip clearance size has a deleterious effect on rotor efficiency and pressure-rise performance over the whole operating range, while thickening the inflow boundary layer is almost the same except that its pressure-rise performance will be increased at mass flow rate larger than design operating condition. Self-induced unsteadiness occurs at near-stall operating conditions, and its appearance depends largely on tip clearance size, while upstream boundary layer thickness has little effect.Copyright © 2014 by ASME
Effects of Mg 2 + , Fe 3 + , Mn 2 + and Cu 2 + Ions on Lipid Accumulation by Cunninghamella bainieri 2 A 1 (

Cunninghamella bainieri 2A1 is an oleaginous fungus whose lipid accumulation profile is significantly influenced by metal ion concentrations in growth medium. Mg2+, Fe3+, Mn2+ and Cu2+ were found to be the important elements affecting lipid accumulation in this fungus. This study employs a statistical method (Response Surface Methodology – RSM) to study the combined effects of Mg2+, Fe3+, Mn2+ and Cu2+ on lipid accumulation of C. baineri 2A1. Cultivation was carried out in 250 mL Erlenmeyer flasks containing 100 mL nitrogen limited medium at 30oC and 250 rpm agitation for 120 h. A thirty-run central composite design experiment was employed to identify and optimize the significant factors. In addition to Mg2+ and Fe3+ which were shown to have significant effects on lipid accumulation, the interactions between Mg2+ and Cu2+, as well as the effect of Cu2+ in quadratic terms were also found to have significant effect on the process (p<0.05). The highest amount of lipid obtained in this study was 39% g/g biomass with optimal levels of Mg2+, Fe3+ and Cu2+ at 5.00, 0.017 and 0.0005 g/L, respectively, while Mn2+ was omitted. A 32% increment in lipid yield was recorded, where the lipid content increased to 38%, compared to initial yield of 29% g/g biomass prior to optimization. In conclusion, Mg2+ and Fe3+ have significant positive effect on the lipid accumulation of this fungus, whereas Mn2+ and Cu2+ exert negative effects in combination.
Growth, yield and fruit quality of Chimarrita peach trees grafted on different rootstocks

Rootstocks influence the performance and characteristics of fruit trees. However, there is still insufficient information on the relation of rootstocks in mainly cultivars of peach trees grown in Brazil. Therefore, this study aims at evaluating the performance of eight rootstocks: Aldrighi, Capdeboscq, Flordaguard, Nemaguard, Okinawa, Umezeiro, Tsukuba and Selecao Viamao grafted by ‘Chimarrita’ peach tree, planted in 2006 and evaluated in the 2013/2014, 2014/2015 and 2015/2016 in Capao do Leao, RS, Brazil. The following dependent variables were evaluated on the field: floral phenology, affinity with rootstocks, trunk diameter, crown volume, number of fruits, fruit mass and productivity. Fruit mass, diameter, color, pulp firmness, total soluble solid content, titratable acidity, total phenolic content, total carotenoid content, L-ascorbic acid content and antioxidant activity were evaluated. The Umezeiro rootstock provided the lowest values for crown volume, trunk diameter, number of fruits and productivity. The blossoming period of peach trees can be early or delayed depending on rootstock and harvest seasons. Field compatibility constant of Chimarrita cultivar was higher with the rootstocks of Capdeboscq, Okinawa, Tsukuba and Aldrighi. Fruits of plants grafted on Capdeboscq and Okinawa rootstocks showed reddish epidermis. The Okinawa rootstock enabled ‘Chimarrita’ peaches to have higher soluble solid concentrations and L-ascorbic acid. The highest concentrations of total carotenoids were verified in the pulp of fruits obtained from the ‘Chimarrita’ cultivar grafted on Aldrighi, Okinawa, Tsukuba and Umezeiro. The antioxidant activity of the peach pulp was higher on the Capdeboscq rootstock. Key words: Prunus persica (L.) Batsch, vegetate-productive behavior, phytochemical.
Using Subject Test Scores Efficiently to Predict Teacher Value-Added

This article develops a simple model of teacher value-added to show how efficient use of information across subjects can improve the predictive ability of value-added models. Using matched student–teacher data from North Carolina, we show that the optimal use of math and reading scores improves the fit of prediction models of overall future teacher value-added by up to a third for reading and a tenth for a composite measure (math and reading combined). Efficiency gains are greatest when value-added must be calculated on only 1 or 2 years of data. The methods employed are flexible and can be expanded to incorporate information from other subject or subitem test metrics.
Recognizing Risk in Human Capital Investments: A Real Options Approach to Strategic Human Resource Management

An issue that has not yet been explored in the field of strategic human resource management (SHRM) is that of managing the ‘risks’ involved in human capital management of the firm. We address this issue using the real option theory framework. We argue that certain HR practices manage risk and generate opportunities for the firm by creating 'options' for its human capital management. These HR options help ensure stability of returns from human capital and thus sustain competitive advantage. Different types of HR options and the role of certain HR practices in creation of these options are discussed.
Simple Fabrication of Metal-Based Piezoelectric MEMS by Direct Deposition of Pb(Zr, Ti)O3 Thin Films on Titanium Substrates

Piezoelectric Pb(Zr, Ti)O3 (PZT) thin films were directly deposited on cantilever-shaped titanium substrates and evaluated for their piezoelectric properties and actuator performance. Because of the small difference in the thermal expansion coefficient between the PZT and the substrate, and the mitigation of the residual stress, large piezoelectric properties could be obtained for PZT/Ti unimorph actuators. X-ray diffraction measurements clearly revealed that the PZT thin films have a polycrystalline perovskite structure with a random orientation. Observations using a scanning electron microscope (SEM) demonstrated that PZT films, which were 3.8 μm thick, were densely deposited on Pt-coated Ti substrate without pores or cracks. The polarization–electric field (P –E) hysteresis of the PZT film clearly indicates ferroelectricity. The piezoelectric properties of the PZT films were evaluated from the tip displacement of PZT/Ti unimorph cantilevers. Simplified transverse piezoelectric coefficients (e31 = d31/s E 11, where d31 and s E 11 are piezoelectric coefficient and elastic compliance, respectively) were measured, which ranged from −3.6 to 4.3 C/m—about three times larger than those of the PZT thin films deposited on stainless-steel substrates. Measurement of resonant frequencies of the cantilevers shows a clear dependence on the cantilever length, which obeys the theoretical equation. This indicates that these cantilevers can be reliably applied as sensors and actuators in a resonance mode. [2008-0100]
Ethnozoology: A Brief Introduction

Connections between animals and humans date back thousands of years, and cultures all over the world have developed characteristic ways of interacting with the regional fauna over time. Human communities have accumulated a huge store of knowledge about animals through the centuries (passed from generation to generation, largely through oral traditions) that is closely integrated with many other cultural aspects, and this zoological knowledge is an important part of our human cultural heritage. The variety of interactions (both past and present) that human cultures maintain with animals is the subject matter of Ethnozoology, a discipline that has its roots as deep within the past as the first relationships between humans and other animals. Within this context, ethnozoology can be viewed as a discipline that examines the historical, economic, sociological, anthropological and environmental aspects of the relationships between humans and animals. These studies can aid in the evaluation of the impacts human populations have on native animal species and in the development of sustainable management plans - and are thus fundamental to conservation efforts. Additionally, popular knowledge about the regional fauna can be important to academic research projects and offers the possibility of significant savings in comparison to the costs involved with conventional methodologies. The present work gives a brief introduction to Ethnozoology, focusing its importance, historic aspects and current trends.
KMOS LENsing Survey (KLENS): Morpho-kinematic analysis of star-forming galaxies at z 2

We present results from the KMOS LENsing Survey (KLENS), which is exploiting gravitational lensing to study the kinematics of 24 star -forming galaxies at 1.4 10). We derive a M* - sigma(0) relation, using the Tully Fisher relation, which highlights that a different evolution of the velocity dispersion is expected depending on the stellar mass, with lower velocity dispersions for lower masses, and an increase for higher masses, stronger at higher redshift. The observed velocity dispersions from this work and from comparison samples spanning 0 2), where we observe higher velocity dispersions for low masses (log(M-*/M-circle dot) similar to 9.6) and lower velocity dispersions for high masses (log(M-*/M-circle dot) similar to 10.9) than expected. This discrepancy could, for instance, suggest that galaxies at high redshift do not satisfy the stability criterion, or that the adopted parametrization of the specific star formation rate and molecular properties fail at high redshift.
Influence of Hydroxypropyl- β -Cyclodextrin on the Photostability of Fungicide Pyrimethanil

Pesticides continue to play an important role in pest management. However, the intensive pesticide application has triggered several environment negative effects that cannot be disregarded. In this study, the inclusion complex of pyrimethanil with HP-β-CD has been prepared and characterized by proton nuclear magnetic resonance spectroscopy. The formation of the pyrimethanil/HP-β-CD inclusion complex increased the aqueous solubility of this fungicide around five times. To assess the influence of microencapsulation on the environmental photostability of the fungicide, the photochemical degradation of pyrimethanil and pyrimethanil/HP-β-CD inclusion complex has been investigated in different aqueous media such as ultrapure and river water under simulated solar irradiation. The studies allow concluding that pyrimethanil/HP-β-CD inclusion complex increases significantly the photostability of the fungicide in aqueous solutions, especially in natural water. Actually, the half-life of pyrimethanil/HP-β-CD inclusion complex was increased approximately by a factor of four when compared to the free fungicide. The overall results point out that pyrimethanil can be successfully encapsulated by HP-β-CD, a process that can improve its solubility and photostability properties.
Effects of post-fire soil stabilisation techniques on trace elements lost by erosion

The effect of two post-fire stabilisation techniques (Seeding and Mulching) on trace element (Al, B, Co, Cu, Fe, Mn, Mo and Zn) losses with eroded sediments was evaluated over a 13-month period following an experimental fire in a steep shrubland of a temperate-humid region (north-west Spain). With time, concentration of extractable Mn, Zn and Cu in sediments decreased, Fe tended to increase and Al, Co, B and Mo varied without a clear trend. Most sediments and trace element losses occurred during the first 3 months post-fire. Compared with the available elements in ash + burned topsoil, the fraction lost with sediments was highest for Mo (10-16%), intermediate for Mn (4%) and Zn (3%) and low for the rest (0.4-1.2%). Although minor effects of stabilisation techniques on element concentrations were found, accumulated mass losses of trace elements decreased 6-12 times in Mulching because of its 10-fold lower soil erosion rate; no significant changes were found in Seeding. Sediment nutrient losses are probably more important than those published for smoke, leaching or volatilisation. Our results suggest that the Zn and Cu enrichment in sediments from the first erosion events increase the risk of downslope water and soil contamination. In conclusion, soil stabilisation techniques are useful to prevent post-fire ecosystem damage.
Conservation tillage in Mediterranean climate (a review)

Two of most salient features of the Mediterranean climate are wide range in the annual rainfall. Most rainfall occurs between autumn and spring and high temperatures most of the year. Under dry land condition, the success of cereal crops such as wheat or barley is uncertain. Using tillage systems that can conserve water in this areas is very important. Despite of some reports dealing with excellence of conventional tillage, most of them are representative the advantages of conservation tillage. In dry and low rainfall years, conservation tillage retains more moisture in soil in comparison with moldboard because of plant residues which prevent evaporation. Furthermore, the contact surface of soil with air is less, so both of the factors, result in moisture preservation in conservation tillage. Organic materials in the surface layer of soil in conservation tillage are more than conventional tillage. It provides the better condition for soil aggregation which increases resistance against water and wind erosion. The improvement of soil aggregation causes the better condition for moisture infiltration in to the soil. The results of several studies indicated that soil bulk density in moldboard in the surface layer of soil is less than conservation tillage but in deeper layer of soil, bulk density in no tillage is more than other tillage systems. Soil organic matter in 0 to 10 cm of soil in conservation tillage is more than moldboard. Aggregate stability in conservation tillage is more than moldboard because of higher surface organic matter in conservation tillage. No tillage compared with moldboard, sweep, and chisel contain the highest amount of aggregates greater than 1mm and the lowest amount of aggregates smaller than 1mm. In contract with no tillage, moldboard showed the lowest percentage of aggregates greater than 1mm and the highest amount of aggregates smaller than 1mm that make the soil in this system sensitive to wind and water erosion. The results of tillage systems on crop yield are different and depend to cropping condition but in general application of conservation tillage specially chisel has a lot of advantages in aspects of production of optimum yield, saving in energy consumption and also preserving the physical features of soil in dry regions. Key word: conservation tillage, aggregate stability, bulk density, organic matter, yield.
Shear strength properties of Hilti Plain and Indented Strand cable bolts

An investigation into the performance of two 22 mm diameter, 60 tonne tensile strength capacity Hilti cable bolts in shear was conducted using the double shear testing apparatus at the laboratory of the School of Civil, Mining and Environmental Engineering Faculty of Engineering and information sciences, University of Wollongong. The tested cable bolts were (a) Hilti19 wire HTT-UXG plain strand and (b) Hilti 19 wire HTT-IXG spirally indented strand cable bolt, with indentation only on the surface of the outer strands. Both cable bolts were of sealed wire construction type, consisting of an outer 5.5 mm diameter strand layer overlying the middle 3 mm diameter wire strands. Both layers are wrapped around a single solid 7 mm diameter strand wire core. The double shearing test was carried out in 40 MPa concrete blocks, contained in concrete moulds. The cable bolts were encapsulated in concrete using Minova/ Orica FB400 pumpable grout. Prior to encapsulation, each cable bolt were pretensioned initially to 50 kN axial force. A 500 t capacity servo controlled compression testing machine was used for both tests, and during each test the vertical shear displacement was limited to 70 mm on travel. The rate of vertical shear displacement was maintained constant at 1 mm/min. The maximum shearing load achieved for the plain strand cable was 1024 KN, while the indented cable peak load was 904 kN, before the cable bolt strands began to individually snap, which lead to the cable bolt break up into two pieces. It was found that indentation of the cable bolt’s outer strand weakened both the tensile and shearing strength.
Intervening to Increase the ID-Checking Behavior of Cashiers: Cashier-Focused vs. Customer-Focused Approaches

The present four field studies explored the effectiveness of multiple prevention techniques designed to increase the frequency of cashiers’ identification (ID)-checking behaviors from a customer-focused and cashier-focused approach. Studies 1 and 2 examined customer-focused approaches, whereas Study 3 examined a cashier-focused approach. Study 4 examined a combination of the cashier-focused and customer-focused approaches. From a customer approach, Study 1 investigated the use of four prompts (a noprompt control, an antecedent only, an antecedent with a positive consequence, and an antecedent with a negative consequence) at encouraging cashiers to ask customers for their ID during a credit purchase. Research assistants (RAs) visited various stores and made credit purchases, while displaying one of the four prompts covering their card’s signature line to the cashier during check-out. The results showed RAs were checked for ID the most when using the prompts containing the antecedent and consequence, which was checked for ID significantly more than the no-prompt control. Study 2 (also a customer approach) attempted to replicate Study 1 in a non-college community. Using a similar methodology as Study 1, the results showed RAs were checked for ID the most when using the prompt with the antecedent and positive consequence, which was checked for ID significantly more than the no-prompt control. From a cashier approach, Study 3 investigated the use of a goal-setting and prompt intervention led by the restaurant manager to increase the frequency of cashiers’ IDchecking behavior. Using an A-B-A (Baseline-Intervention-Withdrawal) reversal design at one of two restaurants, the results showed the intervention restaurant’s percentage of IDchecked purchases increased from Baseline to the Intervention phase. But, it decreased
Triad Instability of Planetary Rossby Waves

Abstract The triad instability of the large-scale, first-mode, baroclinic Rossby waves is studied in the context of the planetary scale when the Coriolis parameter is to its lowest order varying with latitude. Accordingly, rather than remain constant as in quasigeostrophic theory, the deformation radius also changes with latitude, yielding new and interesting features to the propagation and triad instability processes. On the planetary scale, baroclinic waves vary their meridional wavenumbers along group velocity rays while they conserve both frequencies and zonal wavenumbers. The amplitudes of both barotropic and baroclinic waves would change with latitude along a ray path in the same way that the Coriolis parameter does if effects of the nonlinear interaction are ignored. The triad interaction for a specific triad is localized within a small latitudinal band where the resonance conditions are satisfied and quasigeostrophic theory is applicable locally. Using the growth rate from that theory as a measure.
An examination of graduate theses related with guitar in terms of methodology and content: A case of Turkey

The aim of this study is to examine post-graduate thesis completed on guitar in Turkey. For this purpose, a total of 89 theses were investigated in terms of selected research topics, study participants, and methods for analysis. For the selection of the thesis included in this study three criteria were used; first, theses from 1990 (beginning time for first completed theses on guitar topic) to 2013 period, second, reaching the full text of theses, and third permission of author. The number of thesis investigated in this study represents about 93% (105 at total) of whole completed theses from different institutions in Turkey. Descriptive survey and content analysis method were used for examination of theses. The results of study showed that while selected theses topics reflect more diversity and school related issues at Faculty of Educations (using guitar at school music, teaching methods, etc.), the piece analysis from different compositors was mostly selected study topic at Conservatories and the Fine Art Faculties which parallel to institutions mission. As a conclusion, there are some summarized results and recommendations for upcoming researches on this guitar or guitar education in the light of completed theses and related research literature. Key words: Graduate theses, guitar, music, guitar education, descriptive content analysis.
CEO Turnover and Relative Performance Evaluation: CEO Turnover and Relative Performance Evaluation

This paper shows that CEOs are fired after bad firm performance caused by factors beyond their control. Standard economic theory predicts that corporate boards filter out exogenous industry and market shocks from firm performance before deciding on CEO retention. Using a hand-collected sample of 3,365 CEO turnovers from 1993 to 2009, we document that CEOs are significantly more likely to be dismissed from their jobs after bad industry and, to a lesser extent, after bad market performance. A decline in industry performance from the 90th to the 10th percentile doubles the probability of a forced CEO turnover.