Miracle-dz/UniFAR-FTUs huggingface dataset:
Self-propelling slugs

Surface coating is generally achieved by an active operation: painting with a brush; withdrawing from a bath. Porous imbibition constitutes a more passive way: a porous material just put in contact with a reservoir containing a wetting fluid is spontaneously invaded. In this case, the material can eventually be filled by the fluid. If the aim is to coat only the surface of the pores, the liquid excess must be actively removed. We present an experiment in which a liquid train spontaneously moves in a capillary tube because of the trail it leaves behind. From a practical point of view, this system achieves a coating of the tube. The condition required for this motion and a model for its dynamics are presented. We also show how these trains can drive extremely viscous liquid slugs (or even solid bodies) in narrow tubes. We discuss the thickness of the deposited films. Extensions and limits of this system in more complex geometries are finally described, together with special cases such as the deposition of solid films.
Results of Coring from a Low Mass Rover

Technology for coring from a low-mass rover has been developed to enable core sample acquisition where a planetary rover experiences moderate slip during the coring operation. A new stereo vision technique, Absolute Motion Visual Odometry, is used to measure rover slip during coring and the slip is accommodated through corresponding arm pose updating. Coring rate is controlled by feedback of the measured force of the coring tool against the environment. Test results in the JPL Marsyard show that coring from a low-mass rover with slip is feasible.
Crystal structure of 1-[(2S*,4R*)-6-fluoro-2-methyl-1,2,3,4-tetrahydroquinolin-4-yl]pyrrolidin-2-one

In the title compound, the 1,2,3,4-tetrahydropyridine ring of the quinoline moiety adopts a half-chair conformation while the pyrrolidine ring has an envelope conformation. In the crystal, molecules are linked by N—H⋯O and C—H⋯O hydrogen bonds, forming sheets lying parallel to (10), which are linked via C—H⋯F hydrogen bonds and C—H⋯π interactions, forming a three-dimensional structure.
Labour supply and hours constraints

Book description: Applied microeconomics has become an increasingly important focus of economic research, employing rigorous statistical techniques to test sophisticated economic theories. This volume presents a survey of recent work combining methodology with empirical studies. The first part of the book puts the applied work into perspective and examines the methods and techniques of microeconometrics. It includes work on the specification of labour supply and commodity demand models, duration data, analysis of business surveys and functional measures inequality. The second part contains empirical studies of household and firm behaviour including labour supply with constraints, unemployment duration, optimal scrapping decisions, innovation and the formation of firms' expectations.
Global Agricultural Land Resources – A High Resolution Suitability Evaluation and Its Perspectives until 2100 under Climate Change Conditions

Changing natural conditions determine the land's suitability for agriculture. The growing demand for food, feed, fiber and bioenergy increases pressure on land and causes trade-offs between different uses of land and ecosystem services. Accordingly, an inventory is required on the changing potentially suitable areas for agriculture under changing climate conditions. We applied a fuzzy logic approach to compute global agricultural suitability to grow the 16 most important food and energy crops according to the climatic, soil and topographic conditions at a spatial resolution of 30 arc seconds. We present our results for current climate conditions (1981–2010), considering today's irrigated areas and separately investigate the suitability of densely forested as well as protected areas, in order to investigate their potentials for agriculture. The impact of climate change under SRES A1B conditions, as simulated by the global climate model ECHAM5, on agricultural suitability is shown by comparing the time-period 2071–2100 with 1981–2010. Our results show that climate change will expand suitable cropland by additionally 5.6 million km2, particularly in the Northern high latitudes (mainly in Canada, China and Russia). Most sensitive regions with decreasing suitability are found in the Global South, mainly in tropical regions, where also the suitability for multiple cropping decreases.
Recent Applications of DNA Microarray Technology to Toxicology and Ecotoxicology

Gene expression is a unique way of characterizing how cells and organisms adapt to changes in the external environment. The measurements of gene expression levels upon exposure to a chemical can be used both to provide information about the mechanism of action of the toxicant and to form a sort of “genetic signature” for the identification of toxic products. The development of high-quality, commercially available gene arrays has allowed this technology to become a standard tool in molecular toxicology. Several national and international initiatives have provided the proof-of-principle tests for the application of gene expression for the study of the toxicity of new and existing chemical compounds. In the last few years the field has progressed from evaluating the potential of the technology to illustrating the practical use of gene expression profiling in toxicology. The application of gene expression profiling to ecotoxicology is at an earlier stage, mainly because of the the many variables involved in analyzing the status of natural populations. Nevertheless, significant studies have been carried out on the response to environmental stressors both in model and in nonmodel organisms. It can be easily predicted that the development of stressor-specific signatures in gene expression profiling in ecotoxicology will have a major impact on the ecotoxicology field in the near future. International collaborations could play an important role in accelerating the application of genomic approaches in ecotoxicology.
DISCOVERY OF A SECOND NOVA ERUPTION OF V2487 OPHIUCHI

A directed search for previously undiscovered nova eruptions was conducted in the astronomical plate archives at Harvard College Observatory and Sonneberg Observatory. We found that an eruption of V2487 Oph (Nova Oph 1998) occurred on 1900 June 20. V2487 Oph was previously classified as a classical nova, which we identified as a probable recurrent nova based on its large expansion velocities and the presence of high excitation lines in the outburst spectrum. The event was recorded on Harvard plate AM 505, at a B magnitude of 10.27 ± 0.11, which is near the peak. The outburst can only be seen on one plate, but the image has a characteristic dumbbell shape (caused by a double exposure) that is identical to the other star images on the plate, and thus is not a plate defect. We conclude that this is in fact a previously undiscovered nova outburst of V2487 Oph, confirming our prediction that it is a recurrent nova. We also examine the discovery efficiency for eruptions of the system and conclude that a randomly timed outburst has, on average, a 30% chance of being discovered in the past century. Using this, we deduce a recurrence time for V2487 Oph of approximately 18 years, which implies that the next eruption is expected around 2016.
Nicotine Exposure during Adolescence Leads to Short- and Long-Term Changes in Spike Timing-Dependent Plasticity in Rat Prefrontal Cortex

Adolescence is a critical period of brain development during which maturation of areas involved in cognitive functioning, such as the medial prefrontal cortex (mPFC), is still ongoing. Tobacco smoking during this age can compromise the normal course of prefrontal development and lead to cognitive impairments in later life. Recently, we reported that nicotine exposure during adolescence results in a short-term increase and lasting reduction in synaptic mGluR2 levels in the rat mPFC, causing attention deficits during adulthood. It is unknown how changed synaptic mGluR2 levels after adolescent nicotine exposure affect the ability of mPFC synapses to undergo long-term synaptic plasticity. Here, we addressed this question. To model nicotine exposure, adolescent (P34–P43) or adult (P60–P69) rats were treated with nicotine injections three times per day for 10 d. We found that, both during acute activation of nicotinic receptors in the adolescent mPFC as well as immediately following nicotine treatment during adolescence, long-term plasticity in response to timed presynaptic and postsynaptic activity (tLTP) was strongly reduced. In contrast, in the mPFC of adult rats 5 weeks after they received nicotine treatment during adolescence, but not during adulthood, tLTP was increased. Short- and long-term adaptation of mPFC synaptic plasticity after adolescent nicotine exposure could be explained by changed mGluR2 signaling. Blocking mGluR2s augmented tLTP, whereas activating mGluR2s reduced tLTP. Our findings suggest neuronal mechanisms by which exposure to nicotine during adolescence alters the rules for spike timing-dependent plasticity in prefrontal networks that may explain the observed deficits in cognitive performance in later life.
Moisture sorption isotherms and thermodynamic properties of tow mints: Mentha pulegium and Mentha rotundifolia

Moisture sorption isotherms of Mentha pulegium and Mentha rotundifolia were determined at 30, 40 and 50 °C using the static gravimetric method. GAB, modified Halsey and Peleg models were fitted to the experimental data and the agreement between experimental and predicted values was satisfactory. Calculation of the thermodynamic properties was further used to provide an understanding of the properties of water and energy requirements associated with the sorption behaviour. Isosteric heats of sorption were calculated through direct use of moisture isotherms by applying the Clausius-Clapeyron equation. The differential enthalpy and entropy decreased with increasing moisture content and were adequately characterized by a power law equation. A plot of differential heat versus entropy satisfied the enthalpy-entropy compensation theory.
Creating a whole school ethos of care

ABSTRACT This paper raises questions about schools as positive models of caring societies. Against a background of growing concern for the mental health of children it addresses the centrality of ‘nurture’ and its close cousin ‘care’ as a whole school value, theorised as both a means and an end of schooling. How might school leaders communicate a principle of mutual care and inspire whole school commitment from staff, pupils and parents? Discussion is informed by qualitative data (interviews, focus groups and observations) from a comparative study of seven schools in the NW of England which use the principles and practices of nurture groups. Three demonstrated strong leadership based on ‘deep care’ and an emphasis on ongoing relationships with children. The paper concludes that leadership, as evidenced in the good practice reported here, can go some way towards bringing about the ideal of a whole school ethos of care.
The Relationship between Dimensions of Domestic Violence and Social Structural Determinants of Health in Women

Background and purpose: All forms of violence have mental and social consequences for women. The purpose of this study was to determine the relationship between dimensions of domestic violence and social structural determinants of health in women referred to forensic center in Tehran Material and Methods: This cross-sectional study was conducted in 196 women attending forensic center in Tehran using continuous sampling method in 2013. Data was collected through demographic questionnaire and CTS-2 and analyzed in SPSS V.16. Results: The results showed that the mean score of physical violence was the highest (37.29 ±16.80) among the subjects. ANOVA test also showed a significant correlation between verbal violence, age and husband’s job (p<0.0001), sexual violence and age (p= 0.029), and emotional violence and husband’s age (p=0.003). Moreover, sexual violence was found to be significantly higher in working women. Conclusion: : The relationship between violence and some social determinant factors such as husbands’ age and job indicates the necessity of identifying women at risk to provide them with enough care.
Political Involvement and Apathy in Europe 1973-1998

Many studies have underlined the existence of clear and persistent differences in the levels of political interest among European citizens. In this report these differences and developments in political involvement and political apathy are described and analysed, and conventional explanations in terms of socio-demographic characteristics of individuals (education, gender, age and date of birth) are reviewed. Although the general level of political involvement remains more or less stable, the level of political apathy declines in the last decades. Socio-demographic characteristics still count for differences in political interest, but their impact has declined in several countries since the early 1970s. Especially a waning of gender-related differences can be observed among the youngest cohorts, accounting at least partially for a decline in political apathy across Europe. This conclusion does not defy the observation of persistent and substantial cross-national differences in Europe. Besides, all results underline that political involvement and political apathy cannot be treated as simple complementary concepts
Brief interventions for at-risk drinking: patient outcomes and cost-effectiveness in managed care organizations.

AIMS Evaluate effectiveness and costs of brief interventions for patients screening positive for at-risk drinking in managed health care organizations (MCOs). METHODS A pre-post, quasi-experimental, multi-site evaluation conducted at 15 clinic sites within five MCO settings. At-risk drinkers (N = 1329) received either: (i) brief intervention delivered by licensed practitioners; or (ii) brief intervention delivered by mid-level professional specialists (nurses); or (iii) usual care (comparison condition). Clinics were randomly assigned to three study conditions. Data were collected on the cost of screening and brief intervention. Follow-up interviews were conducted at 3 and 12 months. RESULTS Participants in all three study conditions were drinking significantly less at 3-month follow-up, but the decline was significantly greater in the two intervention groups than in the control group. There were no significant differences between the two intervention conditions. Of the patients in the intervention conditions 60% reduced their alcohol consumption by > or =1 drink per week, compared with 53% of those in the control condition. No differences were found on a measure of the quality of life. Differential reductions in weekly alcohol consumption between intervention and control groups were significant at 12-month follow-up. Average incremental costs of the interventions were 4.16 US dollar per patient using licensed practitioners and 2.82 US dollar using mid-level specialists. CONCLUSION Alcohol screening and brief intervention when implemented in managed care organizations produces modest, statistically significant reductions in at-risk drinking. Interventions delivered to a common protocol by mid-level specialists are as effective as those delivered by licensed practitioners at about two-thirds the cost.
Psoriatic Arthritis Is an Indicator of Significant Renal Damage in Patients with Psoriasis: An Observational and Epidemiological Study

Background. Psoriasis affects joints in around 30% of the patients. Recent studies have demonstrated an increased risk of essential hypertension, ischemic heart disease, and stroke in psoriatic patients. However, the prevalence of renal disease in patients with psoriasis has not been evaluated properly. Objectives. Objectives were to evaluate renal functions in patients with psoriasis and to assess any possible relationship of renal failure with psoriasis and psoriatic arthritis. Methods. In this cross-sectional study, 30 participants were recruited into the following three groups: group-A, psoriatic arthritis; group-B, psoriasis without arthritis; and group-C, healthy subjects. Renal function tests were performed for every participant of each group. The data was analyzed by using SPSS version 16. Chi-squared and one-way ANOVA tests were applied, considering a P value of less than 0.05 as a standard criterion. Results. Serum creatinine, urea, and phosphate were the highest in group-A, higher in group-B, and normal in group-C, P < 0.05. Similarly, GFR was the lowest in group-A, lower in group-B, and normal in group-C. The difference in mean GFR values was statistically significant, F(2) = 355, P < 0.001. Moreover, proteinuria (gm/day) was seen in 96.7% of the patients with psoriatic arthritis, (M = 1.18 ± 0.55, P < 0.05) against 10% of the psoriatic patients without arthritis (M = 0.41 ± 0.10, P < 0.05). Conclusion. Derangement of renal function is more prevalent in psoriatic patients, especially in those with concomitant psoriatic arthritis. Therefore, each psoriatic patient must be routinely screened for an underlying renal failure.
A Design for Evidence-based Software Architecture Research

Active research is being done in how to go from requirements to architecture. However, no studies have been attempted in this area despite a long history of empirical research in software engineering (SE). Our goal is to establish a framework for the transformation from requirements to architecture on the basis of a series of empirical studies. The first step is to collect evidence about practice in industry before designing relevant techniques, methods and tools. As part of this step, we use an interview-based multiple-case study with a carefully designed process of conducting the interviews and of preparing the data collected for analysis while preserving its integrity. In this paper, we describe the design of this multiple-case study, delineate the evidence trail, discuss validity issues, outline the data analysis focus, discuss meta issues on evidence-based SE particularly on combining and using evidence, describe triangulation approaches, and present two methods for accumulating evidence.
Psychological Help-Seeking Attitude and Locus of Control among College Student

This study investigated psychological help-seeking attitude and its relation to gender, year in college, accommodation, and locus of control among college students. A total of 152 students (55.3% female and 44.7% male) participated in this study. Self-report data on psychological help-seeking attitude and locus of control scale were assessed. Results showed participants held positive attitude towards help-seeking. Help-seeking attitude did not vary by gender, year in college, and accommodation. Significant contribution attributed to locus of control. Externally locus of control type participants indicated more positive help-seeking attitude than internally type.
Using performance signatures and software rejuvenation for worm mitigation in tactical MANETs

In this paper, we propose a new approach for mitigation of worm propagation through tactical Mobile Ad-Hoc Networks (MANETs) which is based upon performance signatures and software rejuvenation. Three application performance signature and software rejuvenation algorithms are proposed and analyzed. These algorithms monitor critical applications' responsiveness and trigger actions for software rejuvenation when host resources degrade due to a co-resident worm competing for host resources. We analyze the effectiveness of our algorithms through analytic modeling and detailed, extensive simulation studies. The key performance metrics investigated are application response time, mean time between rejuvenations and the steady state probability of host infection. We also use simulation models to investigate several design and parameter tuning issues. We investigate the relationship between the rate at which the application performance monitors can detect out-of-specification applications and the rate of worm propagation in the network.
A Special Kind of Ambition: The Role of Personality in the Retention of Academically Elite Teachers

Background Creating greater stability in the teacher labor force and improving teacher quality is an important education policy priority in the United States. While there is a robust literature on the external, environmental reasons teachers stay in or leave the occupation, little is known about the role internal, person-level factors play in teacher retention, especially among academically elite teachers. Focus of Study This study explores the role of personality, holistically defined, in teacher commitment. Participants The sample for this study consists of 107 graduates of a single teacher preparation program. They are classified as “academically elite,” as this preparation program is very selective and demands high GRE scores. Research Design Discriminant function and regression analyses are used to test which of a rich set of personality measures, both traditional self-report measures and coded narrative accounts of life and career high points, predict long-term commitment to teaching in this sample. Results Discriminant function analysis exploring differences between very long-term committers (15+ years) and short-term committers (7- years) suggests that long-term committers are distinguished by a “special kind of ambition”: they set goals that are both more difficult and more prosocial than their counterparts with a shorter commitment to the occupation, and in personal narratives they more often show “enlightened self-interest,” a combination of self-interest/self-promotion with concern for and connection to others. In addition, regression analyses show that these personality variables significantly predict retention in the sample as a whole, even when controlling for school advantage. Conclusions These results provide evidence that personality does play an important role in teachers’ occupational commitment, call into question pervasive stereotypes in the United States of teachers as unambitious, and suggest ways academically elite teachers might be able to shift the ways they think about their work in order to sustain themselves in the occupation.
How Persistent is the Impact of Market Timing on Capital Structure?

This paper examines the capital structure implications of market timing. I isolate timing attempts in a single major financing event, the initial public offering, by identifying market timers as firms that go public in hot issue markets. I find that hot-market IPO firms issue substantially more equity, and lower their leverage ratios by more, than cold-market firms do. However, immediately after going public, hot-market firms increase their leverage ratios by issuing more debt and less equity relative to cold-market firms. At the end of the second year following the IPO, the impact of market timing on leverage completely vanishes. Copyright 2006 by The American Finance Association.