Miracle-dz/UniFAR-FTUs huggingface dataset:
Sentiment on cross-sectional stock returns and volatility

This paper finds that the cross-section of future stock returns and volatility are conditional upon beginning-of-month sentiment. Specifically, small-sized, growth, and low dividend stocks are vulnerable to sentiment, and, when sentiment is high, extreme short-term losers and mid-term winners tend to earn significant low returns, but long-term losers earn positive returns in the subsequent month. An optimistic sentiment is followed by a downward change in conditional volatility for short-term winners, but an upward shift in conditional volatility for large stocks, extreme growth stocks, value stocks, higher cash flow/price stocks, higher earning/price stocks, long-term losers, and mid-term winners. On the contrary, a pessimistic sentiment leads to a downward volatility change for moderate cash flow/price and dividend-yield stocks, the highest earning/price stocks, long-term losers, and mid-term winners, but a higher volatility for larger stocks, lower cash flow/price stocks, moderate earning/price stocks, long-term winners, and stocks with short-term moderate performance. Above evidence reveals that stocks which are easy to arbitrage and attract rational speculation are not necessarily less volatile.
The potential for biological mobilization of trace elements from aeolian dust in the ocean and its importance in the case of iron

RÉSUMÉ R. M. Moore •, J. E. Milley b, A. Chatt b • Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, B3H 4Jl, Canada. bTrace Analysis Research Centre, Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4Jl, Canada. Received S/9/83, in revised form 27/9/83, accepted 10/11/83. In order to determine whether particulate material, atmospherically supplied to the ocean surface, may be significantly leached not only by direct interaction with sea water but also as a result of zooplankton grazing, samples of atmospheric dust were leached at pH values between 5.4 and 8.0. The elements Cu, As and V showed significant increases in the proportion leached as the pH was lowered. Iron was found to be leached to an extent of ca. 10%, but with no significant pH effect. A comparison of the crustal concentrations of a number of elements with their sea water concentrations suggests that Fe is among the most likely to have an appreciable atmospheric contribution to its supply to surface ocean waters. An estimate of the atmospheric flux of this element in a leachable form supports the idea that this source is the main contributor to the requirements of the biota. Since the efficiencies with which phytoplankton can grow at low Fe concentrations vary between species it follows that the meteorological factors that govern the rate of transport of atmospheric dust to the ocean areas could affect plankton ecology and productivity. Oceanol. Acta, 1984, 7, 2, 221-228. Potentiel de mobilisation biologique dans l'océan des éléments-trace d'origine atmosphérique et son importance dans le cas du fer Des échantillons de poussière atmosphérique ont été traités à des valeurs de pH comprises entre 5,4 et 8,0, afin de déterminer si le matériel particulaire fourni par l'atmosphère à la surface des océans, peut être solubilisé de manière significative, non seulement par interactions directes avec l'eau de mer, mais aussi par le broutage du zooplancton. La proportion de Cu, As, V libérée est en augmentation significative lorsque le pH diminue. Environ 10% du fer peuvent être libérés, sans effet marqué du pH. La comparaison des concentrations d'un certain nombre d'éléments à terre et dans l'eau de mer, suggère que le fer atmosphérique a probablement la contribution la plus appréciable. L'évaluation du flux atmosphérique de cet élément sous forme libérée confirme l'apport de cette source aux besoins du biotope. La croissance du phytoplancton étant variable d'une espèce à l'autre aux faibles concentrations en fer, il s'ensuit que les facteurs météorologiques qui règlent le transport de la poussière atmosphérique vers les zones océaniques peuvent affecter l'écologie et la productivité du plancton. Oceanol. Acta, 1984, 7, 2, 221-228. 0399-1784/84/02 221 08/$ 2.80/C Gauthier-Villars 221 R. M. MOORE, J. E. MILLEY. A CHATT
The shark Carcharhinus sp. from the Middle Eocene of Jamaica and the Eocene record of Carcharhinus

An upper tooth of a previously unrecorded species of the shark Carcharhinus was recovered from the Middle Eocene of Jamaica. This represents one of the oldest examples of the genus, which today is one of the dominant groups of predators within a variety of tropical environments. This is also the oldest record of a carcharhinid shark from marginal marine facies and confirms that the early radiation of Carcharhinus occurred within Tethyan regions.
Effects of gamma radiation on mature pupae of the cotton bollworm, Helicoverpa armigera (HÜBNER) and their F1 progeny.

Mature male pupae of cotton bollworm, Helicoverpa armigera, from laboratory culture were irradiated at 0, 50, 100, 150 and 200 Gy with dose rate of 33.6 Gy/min in 60 Co gamma irradiator. The results were found to have 99.17, 97.50, 98.75, 97.92 and 99.06% moth emergence, 1.56, 3.54, 2.91, 5.39 and 8.33% moth deformation, 13.35, 10.20, 9.45, 11.65 and 11.10 days longevity of P1 moths, 27.04, 30.49, 33.12, 48.84 and 62.73% sterility of P1 moths respectively. Effects of radiation on F1 progeny showed that survival of the immature stages of F1 progeny significantly decreased with increasing doses irradiated to P1 male and the sex ratio of the F1 progeny was significantly skewed in favor of males. Longevity of F1 male moths from male parents irradiated as mature pupae at 0, 50, 100, 150 and 200 Gy were 29.00, 26.13, 24.90, 26.35 and 22.55 days while those of F1 female moths were 17.60, 18.00, 17.55, 17.15 and 17.19 days respectively. Fecundity of F1 female moths was not significantly different but the sterility of F1 progeny was significantly different compared with untreated moths. The sterility of F1 male moths were 26.17, 52.77, 92.1, 96.84, 100.00% while those of F1 female moths were 26.17, 52.75, 84.76, 98.91 and 100.00% respectively.
The Mediating Role of Self- Control in the Relationship between Emotion Regulation and Addiction Potential among Students

Introduction: Psychological factors are very important variables in the addiction potential. The aim of current research was to investigate the mediating role of self-control in the relationship between emotion regulation and addiction potential among university students. Methods: This research was cross-sectional correlational. The statistical population of the present study included students from Yasouj University in the academic year 2017-18. 394 of the university students were selected by multi-stage cluster sampling method and responded to the Iranian scale of addiction potential, emotion regulation subscale, and self-control scale. The gathered data were analyzed by Pearson correlation coefficient, regression analysis, path analysis and sobel test (p≤0.05). Results: Results showed that, emotion regulation could negatively predict addiction potential (p=0.01) and positively predict self-control (p=0.01). Also emotion regulation could indirectly predict addiction potential with the mediating role of selfcontrol (p=0.01) Conclusion: The results of current research implies the importance of psychological factors such as emotion regulation and selfcontrol in explaining addiction potential. Also, the role of emotional regulation in direct and indirect explanation of addiction is important.
Can Western interorganizational governance mechanisms be applied to a guanxi‐based market?

Purpose – The emergence of “interorganizational marketing” as a hot topic leads to one key question: can interorganizational governance mechanisms (socialization, incentives, and monitoring) offered by marketing theory be applied to China, an emerging economy characterized by the Chinese guanxi relationship? The purpose of this paper is to seek to answer this question by introducing the importance of guanxi roles and by illustrating how to apply proper governance mechanisms to roles activation in Chinese business practice. The paper finds that the answer is “yes” and develops a theoretical model to show such interactions.Design/methodology/approach – The paper applies interorganizational strategies to interpersonal relationships. Guanxi was categorized into three categories – family members, helpers and business partners – which meet each of the three governance mechanisms (in addition to favoring exchange as a special and typical Chinese governance mechanism) in the model.Findings – Through ex post role .
Letter. Crystallographic alignments in a coccolith (Pleurochrysis carterae) revealed by electron back-scattered diffraction (EBSD)

Abstract Crystal orientations of the sub-micrometer-sized calcite units in oval-shaped coccoliths of a coccolithophore, Pleurochrysis carterae, have been investigated using electron back-scattered diffraction (EBSD). Although the contrast of the acquired EBSD patterns was weak due to the small crystal unit size, the orientations could be uniquely determined from the patterns. The crystal orientations for V- and R-units are close to those reported in a previous work using electron diffraction in a TEM. However, more accurate crystal orientations corresponding to the coccolith morphology were obtained by using EBSD in a SEM. In V-units, the c-axis is declined about 35° from the normal of the coccolith plane and one of the ai-axes is roughly parallel to the coccolith plane. The c-axis in R-units is slightly oblique to the radial direction along the coccolith plane and one of the ai-axes is near vertical to the coccolith plane. The projections of the c-axis of V- and R-units on the coccolith plane deviate considerably from the normal of the coccolith circumference, giving a crystallographic chiral property. The atomic arrangements of calcite contacted with the organic base plate are discussed for both units based on the crystallographic orientations derived from EBSD measurements.
Spiral galaxies observed in the near-infrared K band - I. Data analysis and structural parameters

Deep surface photometry in the K band was obtained for 54 normal spiral galaxies, with the aim of quantifying the percentage of faint bars and studying the morphology of spiral arms. The sample was chosen to cover a wider range of morphological types while inclination angles and distances were limited to allow a detailed investigation of the internal structure of their disks and future observations and studies of the disk kinematics. An additional constraint for a well defined subsample was that no bar structure was seen on images in the visual bands. Accurate sky projection parameters were determined from the K maps comparing several different methods. The surface brightness distribution was decomposed into axisymmetric components while bars and spiral structures were analyzed using Fourier techniques. Bulges were best represented by a Sersic $r^{1/n}$ law with an index in the typical range of 1-2. The central surface brightness of the exponential disk and bulge-to-disk ratio only showed weak correlation with Hubble type. Indications of a central point source were found in many of the galaxies. An additional central, steep, exponential disk improved the fit for more than 80% of the galaxies suggesting that many of the bulges are oblate. Bars down to the detection level at a relative amplitude of 3% were detected in 26 of 30 galaxies in a subsample classified as ordinary SA spirals. This would correspond to only 5% of all spiral galaxies being non-barred at this level. In several cases, bars are significantly offset compared to the starting points of the main spiral pattern which indicates that bar and spiral have different pattern speeds. A small fraction (~10%) of the sample has complex central structures consisting of several sets of bars, arcs or spirals. A majority of the galaxies (~60%) displays a two-armed, grand-design spiral pattern in their inner parts which often breaks up into multiple arms in their outer regions. Phase shifts between the inner and outer patterns suggest in some cases that they belong to different spiral modes. The pitch angles of the main two-armed symmetric spiral pattern in the galaxies have a typical range of 5-30°. The sample shows a lack of strong, tight spirals which could indicate that such patterns are damped by non-linear, dynamical effects due to their high radial force perturbations.
A survey of the eutrophication state of an urbanized tropical estuary, the case of the Great Vitória Estuarine System, Brazil.

Although, estuarine ecosystems have an ecological and economical importance as they have a high biological productivity and occur within a unique and dynamic environment, they have been subjected to anthropogenic alterations. The Great Vitoria Estuarine System (GVES), Espirito Santo State, Brazil, is not an exception, as urbanization is growing around it with a high quantity of sewage been added to the system. In order to evaluate the eutrophication state as well as the meiofauna response to it, several parameters in both sediments and in the water column were assessed. Orthophosphate, nitrite, nitrate, ammonia, chla and Fecal Coliform counts (FC) ranged from 0.2 to 3.2 μM, 0.25 to 1.14 μM, 1.83 to 0. 19μM, 4.19 to 49.23 μM, 0.61 to 6.72 μg/L and 14 to 5.0x104 MPN/100 mL of water, respectively. These results showed that the GVES is under an eutrophication process and that the Passagem Channel experienced the largest impacts. Sewage plays an important role in this eutrophication process as indicated by PCA and correlations tests. The density of meiofauna showed similar values to those found in environments with similar levels of anthropogenic stress. This multi-approach evaluation revealed several aspects of the impacted estuary and could be used as an important tool to manage better the estuary.
Effects of Compact Disc-Mediated Instruction and Computer-Based Package on Students' Achievement in Business Studies

The study investigated the effects of compact discmediated instruction and computer-based package on students achievement in business studies. The study employed the quasi-experimental research of the pre-test, post-test control group design. The sample for the study consisted of 120 students. The findings revealed that the students exposed to computer-based package had better achievement than those exposed to compact disc-mediated instruction (P<0.05). The result indicated that both packages enhanced effective teaching and learning of Business Studies, however, the computer-based package was more effective. It was recommended that both strategies be employed in the teaching and learning of Business Studies. Educational authorities and stakeholders should plan and implement policies that will ensure mass utilization of compact discmedicated instruction and computer-based package in the teaching and learning process in all secondary schools.
Stratification effects by fine suspended sediment at low, medium, and very high concentrations

This paper describes results of the second part of a study on stratification effects by cohesive and noncohesive sediment. Winterwerp (2001) applied classical stratified flow theory implemented in a one-dimensional vertical numerical model (the 1DV POINT MODEL), showing that sediment-induced stratification effects may occur at already fairly small suspended sediment concentrations (i.e., a few 100 mg/L). We also discussed a basic difference between the behavior of cohesive and noncohesive sediment, which emerges as a result of the large water content of mud flocs. In this paper we elaborate further on the hydrodynamic description of the transport of fine suspended sediment by analyzing field and laboratory observations over a very large range of concentrations. We propose a sediment stability diagram to explain some features of hyperconcentrated flows, such as those observed in the Yellow River. We show that the behavior of hyperconcentrated flows is affected largely by hindered settling effects reducing the energy required to keep the sediment in suspension. The hydrodynamic description of sediment transport is used to predict capacity conditions as a function of a dimensionless stream power, i.e., U3/hgWs. This prediction agrees favorably with observations reported in literature covering four orders of magnitude in suspended sediment concentration.
Convince me or commit me? Avoid the cognitive trap induced by Non-Human Actors in early stages of NPD.

Akrich, Callon & Latour's concept of interessement has been broadly used in NPD. A gap in this theoretical stream of research remains in the difference between human actors' commitment and convincement. The first concerns the enrolment of competent allies while the second concerns arousing top managers' approbation. To address this gap, our qualitative research takes place at SAFRAN, a corporate conglomerate of highly specialised companies. We take the focus of non-human actors (NHA) involved in early stages of NPD analysing 28 NHA of 5 different representational media in 4 different contexts. To characterise NHAs we review the literature on artefacts made within NPD and identify two utmost types (A and B). We find that NHAs which match type A artefacts do better at convincing in prospect of an entry gate to development and that NHAs which match type B artefacts do better at committing in the ideation process. The difficulty for managers is that type A or type B artefacts cannot be recognised according to their representational medium. The consequence is a misunderstanding: some NHA which match type B artefacts create no interessement because type A artefacts were expected, introducing the risk of missing an innovation opportunity. However their failure may not be definitive as managers have the ability to switch from convincement logic to commitment logic. This change in interaction is more probable to happen in informal meetings than in distant artefacts review. Some NHA take advantage of their A-B artefact ambiguity, human actors interact with them by alternating logics, inducing richer decisionmaking and ideation. We conclude that if managers were aware of the two types of artefacts they could adapt their attitude accordingly and take better decisions. We suggest that managers favour artefacts presentations in informal meetings to favour switching between convincement and commitment logics and avoid the cognitive trap.
Using the Attitude Response of Aerostable Spacecraft to Determine Thermospheric Wind

Thermospheric wind can be measured by observing the attitude motion of aerostable spacecraft when allowed to freely react to the aerodynamic torques. Estimates of the spacecraft aerodynamic properties, of the other disturbance torques and of the atmospheric density are required to determine the wind magnitude and direction. Aerostable spacecraft behave as undamped oscillators with their natural frequency depending on the dynamic pressure and their aerodynamic stiffness. The achievable spatial resolution is proportional to the natural frequency and smaller spacecraft, having higher cross-section area to inertia ratio, exhibit higher frequencies and are particularly suited for this method. The method described in this paper can provide global cross-track and in-track wind measurements. The measurements accuracy and spatial resolution with respect to the system parameters are analyzed and discussed for an ideal one rotational degree-of-freedom case.
The Power of One: Effects of CEO Duality on Compensation Committee Quality and CEO Compensation

This paper contributes to the corporate governance literature by focusing on how Chief Executive Officer (“CEO”) duality and compensation committee quality are related to CEO compensation in the period since passage of the Sarbanes Oxley Act (“SOX”). Unlike research prior to SOX that focused chiefly on committee members’ independence, we measure compensation committee quality in two ways. We consider the average number of board directorships held by compensation committee members as well as the proportion of committee members with prior or current CEO duality experience. We introduce the latter variable as a new measure of quality as it has not been utilized in research conducted prior to or since the passage of SOX. Using a sample of 10
Do improved pastures affect enzymatic activity and C and N dynamics in soils of the montado system

Vast montado areas are threatened by degradation, as the result of a long history of land use changes. Since improved pastures have been installed aiming soil quality improvement and system sustainability, it is crucial to evaluate the effects of these management changes on soil organic matter status and soil biological activity, as soil quality indicators. Therefore, a 35-yr old improved pasture and a natural pasture were studied, considering areas beneath tree canopy and in the open. Total organic C, total N, hot water soluble (HWS) and particulate (POM) C, microbial biomass C (MBC) and N (MBN), C mineralization rate (CMR) and net N mineralization rate (NMR) were determined. In addition, for a 1-yr period, soil β-glucosidase, urease, proteases and acid phosphomonoesterase were periodically determined. Improved pasture promoted the increase of soil C and N through POM-C increment, particularly beneath the trees canopies. The two study pastures did not show differences regarding soil microbial biomass, but variations in CMR, HWS-C and N availability (proteases and urease activities) suggest divergent soil microbial communities. Tree regulator role on C, N and P transformation processes in soil was confirmed.
Causal Modelling of Construction Disputes

Disputes have become an inherent feature of the construction industry. A plethora of studies have been undertaken to identify the causes of disputes so as to determine the most appropriate prevention and resolution strategies. While it is widely known what the main causes of dispute are, they still remain prevalent in the Australian construction industry. This is because there is a need to better understand the complexity and interplay between causal variables. Using data derived from the literature a conceptual causal model of construction disputes is developed. The model identifies the key causal variables and pathogens that can contribute to disputes.
LInkage between herbaceous vegetation and soil characteristics along rawal dam islamabad

This study provides an analysis of the soil, vegetation types and species distribution along Rawal Dam, Rawal Lake and its three tributaries (Bani Gala, Chattar and Bari Imam Streams and its tributaries), with a focus on the environmental factors that control species distribution. After identifying the study area’s herbaceous vegetation and analyzing the soil’s physical and chemical parameters, the variable data were connected into a relationship. TWINSPAN (Two Way Indicator Species Analysis) classified the herbaceous vegetation into seven different communities with which; the formulated groups in DCA (Deterended Correspondance Analysis) were coherent. CCA (Canonical Correspondance Analysis) produced the relationship of soil parameters such as pH, organic matter, Potassium, Manganese, Zinc, and Iron with the herbaceous vegetation. The most effectual and varied parameter was the Potassium and Manganese that was available among the heavy metals. Thus, this study analyzed the overall relationship among soil, vegetation and the species present at the selected site.