Miracle-dz/UniFAR-FTUs huggingface dataset:
Comparing Willingness to Pay for Organic, Natural, Locally Grown, and State Marketing Program Promoted Foods in the Mid-Atlantic Region

A choice experiment of Mid-Atlantic consumers was conducted to determine marginal willingness to pay for the attributes organic, natural, locally grown, and state marketing program promoted for strawberry preserves. The influence of purchasing venue on willingness to pay was also examined. Results indicated a price premium when purchased at a farmers market across all five states and versions. Organic was preferred to natural in only one state. Preference ordering between local and state program promoted varied. Consumers in Maryland and Pennsylvania clearly preferred local, while those in New Jersey seemed most likely to prefer the state program version.
Estimating the Probability Distribution of the Future Exchange Rate from Option Prices

This article describes a method of extracting the riskneutral probability distribution of future exchange ratesfrom option prices. In foreign exchange markets, interbank option pricing conventions facilitate reliable inferences about riskneutral probability distributions with a small amount of readily available information. T h e risk-neutral probability distribution of the future exchange rate provides investors and market analysts wi th an important tool for gauging market sentiment.
An interrelation of time preference and risk attitude: an application to the equity premium puzzle

In the fields of behavioural economics and finance, several researchers show that the time preference of an investor is related to his/her attitude towards risky assets. This article investigates whether the equity premium puzzle laid out in Mehra and Prescott (1985) can be accounted for when this relation is imposed on the representative agent model of asset pricing. Three primary features of our analysis allow us to investigate the relationship. First, we derive an equation satisfied by the rate of time preference. Second, our model can yield an equity premium that is consistent with the observed data even in the standard power utility setting. Third, to fit the observed equity premium, we show that it is required to assume a negative rate of time preference, which is consistent with Kocherlakota (1996) and Brennan and Xia (2001).
Assessing skills and autonomy: the job holder versus the line manager

Managers and their employees may have different perceptions of the skills used in jobs. We carried out a survey aimed at explaining such differences, in respect of verbal, physical, problem-solving and planning skills, the qualifications required to get the job and indicators of workplace autonomy. First, for most skills there is a reasonably good match between the perceptions of the line manager and those of the employee. But in the case of the contested skills associated with autonomy there is little agreement. Secondly, for most skills there is a small ‘perceptions bias’, in the sense that employees rate required skills at a higher level than their line managers. Thirdly, consistent with the hypothesis that skills are socially constructed, when the manager is male and the worker female there is a tendency for the boss to underestimate and/or the worker to overestimate their skill level by comparison with other gender combinations.
Adaptation to different salinities exposes functional specialization in the intestine of the sea bream (Sparus aurata L.)

SUMMARY The processing of intestinal fluid, in addition to a high drinking rate, is essential for osmoregulation in marine fish. This study analyzed the long-term response of the sea bream (Sparus aurata L.) to relevant changes of external salinity (12, 35 and 55 p.p.t.), focusing on the anterior intestine and in the less-often studied rectum. Intestinal water absorption, epithelial HCO3− secretion and gene expression of the main molecular mechanisms (SLC26a6, SLC26a3, SLC4a4, atp6v1b, CFTR, NKCC1 and NKCC2) involved in Cl− and HCO3− movements were examined. The anion transporters SLC26a6 and SLC26a3 are expressed severalfold higher in the anterior intestine, while the expression of Atp6v1b (V-type H+-ATPase β-subunit) is severalfold higher in the rectum. Prolonged exposure to altered external salinity was without effect on water absorption but was associated with concomitant changes in intestinal fluid content, epithelial HCO3− secretion and salinity-dependent expression of SLC26a6, SLC26a3 and SLC4a4 in the anterior intestine. However, the most striking response to external salinity was obtained in the rectum, where a 4- to 5-fold increase in water absorption was paralleled by a 2- to 3-fold increase in HCO3− secretion in response to a salinity of 55 p.p.t. In addition, the rectum of high salinity-acclimated fish shows a sustained (and enhanced) secretory current (Isc), identified in vitro in Ussing chambers and confirmed by the higher expression of CFTR and NKCC1 and by immunohistochemical protein localization. Taken together, the present results suggest a functional anterior–posterior specialization with regard to intestinal fluid processing and subsequently to salinity adaptation of the sea bream. The rectum becomes more active at higher salinities and functions as the final controller of intestinal function in osmoregulation.
Evaluating the impact of economic factors on REITs' capital structure around the world

Purpose - – This paper aims to examine the determinants of the capital structure of real estate investment trusts (REITs) across the world and explore whether this structure is characterized by any common factors. Design/methodology/approach - – Endogenous and exogenous factors that affect the financial management of real estate firms are identified in the analysis. “Regular” (static) panel data regression analysis, as well as dynamic panel data techniques, is applied to a panel of listed real estate firms from 2005 to 2010. Findings - – Empirical results showed that factors such as tangibility, size of the company, growth opportunities, assets turnover affect positively the financial leverage of REITs; conversely, other determinants, being debit's cost, GDP, and long-term interest rates, are negatively correlated with the financial gearing of the REITs. Practical implications - – This paper identifies factors that determine the capital structure of REITs around the world. Firm executives and policy makers in different countries may wish to adjust their policies (regarding capital structure) according to the empirical findings. Originality/value - – This study, using a comprehensive dataset from all over the world, investigates whether there are solid and mutual factors that can characterize the capital structure of REITs.
Exercise

ADHD is the most common neurobehavioral disorder of childhood, presenting with pervasive and impairing symptoms of inattention, hyperactivity, impulsivity, or a combination. The leading hypothesis of the underlying physiology of this disorder of inattention and/or hyperactivity-impulsivity is based on catecholamine dysfunction. Pharmacotherapy research indicates that psychostimulants, which are catecholamine agonists, show the greatest efficacy for treating the core symptoms of ADHD. Exercise affects the same dopaminergic and noradrenergic systems that stimulant medications target and is a stressor, which elicits measurable physiological changes. The magnitude of these peripheral alterations is posited as a potential biomarker of ADHD. The hypothesis that exercise training alters the underlying physiology present in ADHD and other medical conditions as well as conceptual issues behind its potential clinical utility is reviewed.
Acquisitions by Real Estate Investment Trusts as a Strategy for Minimisation of Investor Tax Liability

A key requirement for Real Estate Investment Trusts (REITs) to maintain their corporate tax-exempt status is that 95 percent of income must be distributed as dividents. Receipt of this income imposes a personal tax burden on shareholders. A central tenet of this research is that REIT management is motivated to reduce investors’ personal taxes. This may involve reduction of before-tax income through acquisitions. Market reaction to REIT merger announcements is found to be positive and significant. The evidence developed is more consistent with abnormal returns being related to a tax advantage from acquisitions rather than gaining economies of scale.
The Value of Rehabilitating Logged Rainforest for Birds

Abstract: The recent advent of carbon crediting has led to a rapid rise in biosequestration projects that seek to remove carbon from the atmosphere through afforestation and forest rehabilitation. Such projects also present an important potential opportunity to reverse biodiversity losses resulting from deforestation and forest degradation, but the biodiversity benefits of different forms of biosequestration have not been considered adequately. We captured birds in mist nets to examine the effects of rehabilitation of logged forest on birds in Sabah, Borneo, and to test the hypothesis that rehabilitation restores avian assemblages within regenerating forest to a condition closer to that seen in unlogged forest. Species richness and diversity were similar in unlogged and rehabilitated forest, but significantly lower in naturally regenerating forest. Rehabilitation resulted in a relatively rapid recovery of populations of insectivores within logged forest, especially those species that forage by sallying, but had a marked adverse effect on frugivores and possibly reduced the overall abundance of birds within regenerating forest. In view of these results, we advocate increased management for heterogeneity within rehabilitated forests, but we strongly urge an increased role for forest rehabilitation in the design and implementation of a biodiversity‐friendly carbon‐offsetting market.
The hot hand fallacy re-examined: new evidence from the English Premier League

Previous studies have illustrated human misperceptions of randomness and resultant suboptimal decision-making with reference to the ‘hot hand’ or momentum effect in sport, the notion of serial dependency between outcomes. However, issues of omitted variables bias have plagued many due to a reliance on nonparametric techniques or basic regression models. This article examines across-game and within-game momentum in the English Premier League (EPL) football competition using fixed effects regressions to control for time-invariant heterogeneity in conjunction with traditional nonparametric techniques. Although the results show evidence of performance reversal following winning streaks, no such evidence is found for streaks of draws or losses or in goal-scoring performance within games. This suggests that momentum is better suited as a post hoc label of performance than a robust causal phenomenon.
Assessing the Quality of Instruction In University Economics Courses: Attrition as a Source of Self-Selection Bias in Mean Test Scores

This paper examines the hypothesis that the quality of instruction influences observed mean test scores through its effects on both individual student performance and on class attrition rates. Since these effects are expected to display opposite signs, the level and dispersion of these scores are biased downward. It is shown that hypothesis tests based on simple mean test scores may yield unreliable and possibly misleading results. Data from classes in the principles of economics are employed to test the hypothesis.
Critical Thinking Skills among Final Year Students of Malaysian Technical Universities

Critical thinking is an essential skill that individuals need to have in order to be effective learners and workers in the global knowledge economy. In line with the mandate of the Ministry of Higher Education Malaysia (MOHE), institutions of higher learning including universities under the Malaysian Technical Universities Network (MTUN) have adopted several approaches to ensure that their graduates are equipped with the sufficient level of critical thinking skills. However, there is little knowledge about the attainment levels of critical thinking skills, among Malaysian tertiary students. Thus, the California Critical Thinking Skill Test (CCTST) was used to collect data from one hundred final year students at four Malaysian Technical Universities in order to identify their attainment level on critical thinking skills. The CCTST scores revealed that these students exhibit some proficiency in critical thinking, but they are way behind the global standard, as stipulated by Insight Assessment California. Students’ competencies of the CTS also vary across the four universities. This study has significant implications on the curriculum design and development as well as pedagogical practice adopted by MTUN universities in developing their students with appropriate level of critical thinking skills.
1H-NMR analysis of water mobility in cultured phototrophic biofilms

The present work reports on the first attempt to study water mobility in phototrophic biofilms, applying the 1H-NMR relaxometry technique to closely monitored microbial communities grown in a microcosm under controlled ambient conditions. Longitudinal water proton relaxation times exhibited a bi-exponential behavior in all biofilm samples, indicating two types of water molecules with diverging dynamic properties, confined to different compartments of the biofilm. The fast-relaxing component can be attributed to water molecules tightly bound to the intracellular matrix, while the slow-relaxing component could reflect the behavior of water embedded in the biopolymer matrix, confined into matrix pores and channels. The results are discussed with respect to a possible key role of exopolysaccharides and uronic acids in water binding in phototrophic biofilms.
Regulation of Vacuolar H+-ATPase Activity by the Cdc42 Effector Ste20 in Saccharomyces cerevisiae

ABSTRACT In the budding yeast Saccharomyces cerevisiae, the Cdc42 effector Ste20 plays a crucial role in the regulation of filamentous growth, a response to nutrient limitation. Using the split-ubiquitin technique, we found that Ste20 forms a complex with Vma13, an important regulatory subunit of vacuolar H+-ATPase (V-ATPase). This protein-protein interaction was confirmed by a pulldown assay and coimmunoprecipitation. We also demonstrate that Ste20 associates with vacuolar membranes and that Ste20 stimulates V-ATPase activity in isolated vacuolar membranes. This activation requires Ste20 kinase activity and does not depend on increased assembly of the V1 and V0 sectors of the V-ATPase, which is a major regulatory mechanism. Furthermore, loss of V-ATPase activity leads to a strong increase in invasive growth, possibly because these cells fail to store and mobilize nutrients efficiently in the vacuole in the absence of the vacuolar proton gradient. In contrast to the wild type, which grows in rather small, isolated colonies on solid medium during filamentation, hyperinvasive vma mutants form much bigger aggregates in which a large number of cells are tightly clustered together. Genetic data suggest that Ste20 and the protein kinase A catalytic subunit Tpk2 are both activated in the vma13Δ strain. We propose that during filamentous growth, Ste20 stimulates V-ATPase activity. This would sustain nutrient mobilization from vacuolar stores, which is beneficial for filamentous growth.
Doing More with Less: The Disordinal Implications of Firm Age for Leveraging Capabilities for Innovation Activity*

Innovation requires the entrepreneurial capabilities of opportunity recognition and opportunity exploitation. Such capabilities generally accrue over time from a firm's cumulative learning and experience. In this study, we theorize that firm age should therefore moderate the firm's ability to leverage these capabilities for innovation activity, such that older firms can obtain higher outputs from their capabilities than younger firms can. We examine this relationship using a sample of 676 small and medium enterprises. We find that when both younger and older firms have highly developed innovation capabilities, older firms appear to enjoy higher levels of innovation activity than younger firms do. However, younger firms generally appear more likely to have higher levels of innovation activity than older firms do, when neither firm has highly developed innovation capabilities. We conclude with a discussion of the implications of these findings for research and practice.
The impact of job embeddedness on innovation-related behaviors

It has often been argued that low turnover leads to less innovation in organizations, not only because fewer job vacancies are available for outsiders with new ideas, but also because longer-tenured employees might be more resistant to change. In this study, we propose that job embeddedness may actually strengthen employees' motivation to generate, spread, and implement innovative ideas in organizations. In a longitudinal study with a diverse sample, we found that job embeddedness was positively and significantly related to innovation-related behaviors, even after controlling for demographic variables, the job attitudes, and the job perceptions that are frequently associated with job embeddedness. In addition, we found some support for the proposed moderating effects of career stage; that is, the relationship between job embeddedness and implementing innovative ideas was stronger for individuals in the mid- and late stages of their careers than for those in the early stage of their careers. This article concludes with directions for developing future theory. © 2010 Wiley Periodicals, Inc.
A Lower Bound on Observability for Target Tracking with Range Sensors and its Application to Sensor Assignment

We study two sensor assignment problems for multi-target tracking with the goal of improving the observability of the underlying estimator. In the restricted version of the problem, we focus on assigning unique pairs of sensors to each target. We present a 1/3-approximation algorithm for this problem. We use the inverse of the condition number as the value function. If the target's motion model is not known, the inverse cannot be computed exactly. Instead, we present a lower bound for range-only sensing. In the general version, the sensors must form teams to track individual targets. We do not force any specific constraints on the size of each team, instead assume that the value function is monotonically increasing and is submodular. A greedy algorithm that yields a 1/2-approximation. However, we show that the inverse of the condition number is neither monotone nor submodular. Instead, we present other measures that are monotone and submodular. In addition to theoretical results, we evaluate our results empirically through simulations.
Viral kinetics of enterovirus 71 in human abdomyosarcoma cells.

AIM To characterise the viral kinetics of enterovirus 71 (EV71). METHODS In this study, human rhabdomyosarcoma (RD) cells were infected with EV71 at different multiplicity of infection (MOI). After infection, the cytopathic effect (CPE) was monitored and recorded using a phase contrast microscope associated with a CCD camera at different time points post viral infection (0, 6, 12, 24 h post infection). Cell growth and viability were measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay in both EV71 infected and mock infected cells at each time point. EV71 replication kinetics in RD cells was determined by measuring the total intracellular viral RNA with real-time reverse-transcription polymerase chain reaction (qRT-PCR). Also, the intracellular and extracellular virion RNA was isolated and quantified at different time points to analyze the viral package and secretion. The expression of viral protein was determined by analyze the levels of viral structure protein VP1 with Western blotting. RESULTS EV71 infection induced a significant CPE as early as 6 h post infection (p.i.) in both RD cells infected with high ratio of virus (MOI 10) and low ratio of virus (MOI 1). In EV71 infected cells, the cell growth was inhibited and the number of viable cells was rapidly decreased in the later phase of infection. EV71 virions were uncoated immediately after entry. The intracellular viral RNA began to increase at as early as 3 h p.i. and the exponential increase was found between 3 h to 6 h p.i. in both infected groups. For viral structure protein synthesis, results from western-blot showed that intracellular viral protein VP1 could not be detected until 6 h p.i. in the cells infected at either MOI 1 or MOI 10; and reached the peak at 9 h p.i. in the cells infected with EV71 at both MOI 1 and MOI 10. Simultaneously, the viral package and secretion were also actively processed as the virus underwent rapid replication. The viral package kinetics was comparable for both MOI 1 and MOI 10 infected groups. It was observed that at 3 h p.i, the intracellular virions obviously decreased, thereafter, the intracellular virions began to increase and enter into the exponential phase until 12 h p.i. The total amounts of intracellular virons were decreased from 12 to 24 h p.i. Consistent with this result, the increase of virus secretion occurred during 6 to 12 h p.i. CONCLUSION The viral kinetics of EV71 were established by analyzing viral replication, package and secretion in RD cells.
Employee Goal Orientation, Work Unit Goal Orientation and Employee Creativity

For employee creativity to occur, organizations must build a context conducive to creativity, in addition to identifying employees with creative potential. Complementing and extending earlier research, we develop and test a cross‐level model about how work unit goal orientation might relate to employee creativity. We also theorize and examine the mediating role of employee information elaboration linking work unit goal orientation and employee creativity. We conduct a questionnaire survey based on multi‐source data from 340 employees comprising 53 teams in eight Taiwanese organizations. The results indicate that the work unit goal orientation is positively, whereas the work unit performance‐avoidance orientation is negatively, related to employee creativity through employee information elaboration. Furthermore, work unit goal orientation also plays a cross‐level moderating role: the positive relationship between individual‐level learning orientation and information elaboration is stronger when work unit learning orientation is higher, but weaker when work unit avoidance orientation is higher.
Evidence for an audience effect in mice: male social partners alter the male vocal response to female cues

ABSTRACT Mice (Mus musculus) form large and dynamic social groups and emit ultrasonic vocalizations in a variety of social contexts. Surprisingly, these vocalizations have been studied almost exclusively in the context of cues from only one social partner, despite the observation that in many social species the presence of additional listeners changes the structure of communication signals. Here, we show that male vocal behavior elicited by female odor is affected by the presence of a male audience – with changes in vocalization count, acoustic structure and syllable complexity. We further show that single sensory cues are not sufficient to elicit this audience effect, indicating that multiple cues may be necessary for an audience to be apparent. Together, these experiments reveal that some features of mouse vocal behavior are only expressed in more complex social situations, and introduce a powerful new assay for measuring detection of the presence of social partners in mice. Highlighted Article: Mice modify their vocalizations in response to audiences, but not to simple social stimuli, constituting a novel paradigm for measuring the influence of social cues.