cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rolling Tachyon Solution in Vacuum String Field Theory
Creators: name: Fujita, Masako
name: Hata, Hiroyuki
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a time-dependent solution in vacuum string field theory and investigate whether the solution can be regarded as a rolling tachyon solution. First, compactifying one space direction on a circle of radius R, we construct a space-dependent solution given as an infinite number of *-products of a string field with center-of-mass momentum dependence of the form e^{-b p^2/4}. Our time-dependent solution is obtained by an inverse Wick rotation of the compactified space direction. We focus on one particular component field of the solution, which takes the form of the partition function of a Coulomb system on a circle with temperature R^2. Analyzing this component field both analytically and numerically using Monte Carlo simulation, we find that the parameter b in the solution must be set equal to zero for the solution to approach a finite value in the large time limit x^0\to\infty. We also explore the possibility that the self-dual radius R=\sqrt{α'} is a phase transition point of our Coulomb system.
description: 39 pages, 17 figures, v3: references added
Water quality index and human health risk: a case study on Surma river
Creators: name: Muyen, Z.
name: Mamun, M.
name: Alam, M. J. B.
name: Islam, Molla R.
name: Muyen, Z.
name: Mamun, M.
name: Alam, M. J. B.
name: Islam, Molla R.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Health Economics and Policy
subject: Resource /Energy Economics and Policy
subject: Water parameters
subject: WQI
subject: HQ

description: The study involves extensive laboratory tests to determine the physical and chemical parameters of the Surma river water, the values of which were used to calculate the water quality index and health risk. These parameters were Dissolved Oxygen (DO), Biochemical Oxygen Demand. (BOD), Chemical Oxygen Demand (COD), Total Solids (TS), Ammonium Nitrate (AN) and pH. Water samples were collected at different points along the Surma river for both dry and wet seasons. Samples were analyzed for the above parameters and using the average dry and wet season values of these parameters, an expression of Water Quality Index (WQI) was developed. Moreover, risk has been calculated for the same by Hazard Quotient (HQ). The values of WQI were found to be 73.37 for dry season and 73.51 for wet season. HQ for Cu only was found to be 0.1788. The study concluded that the Surma river water was slightly polluted and no health risk was imminent at that time.
Triepeolus Robertson 1901
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy

description: Genus Triepeolus Robertson, 1901
The species in this genus are brood parasites of Eucerini (Michener 2007).
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 202, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Mediators and moderators of the relationship between maternal depression and negative child outcomes
Creators: name: Sirian, Lisa M.
Publisher: name: American University
Year: 2023

description: Research has shown that children of depressed mothers have more negative outcomes than children of nondepressed mothers, including increased behavior problems and psychopathology. The purpose of the current study was to explore this association by examining possible mediating and moderating variables in the relationship between maternal depression and negative child outcomes in a low-income ethnic minority population of ninety-one children ages four to seven. As impaired parenting skills of depressed mothers have been suggested as a mechanism through which children are negatively impacted, parenting behaviors were studied as potential mediating variables, using both observational and self-report measures. Outcome measures in this study were mother, father figure, and teacher reports of child externalizing and internalizing behavior problems and adaptive skills. Consistent with previous research, maternal depression in this sample was associated with increased child externalizing and internalizing behavior problems, and fewer adaptive skills. However, this difference was found only for mothers' reports, and not for teacher or father figure reports. In studying possible mediators, there were no differences in observational ratings of parenting between depressed and nondepressed mothers, and only maternal self-report of rejection was found to partially mediate the relationship between maternal depression and mothers' ratings of their children's externalizing and internalizing behaviors. Moderating variables were also studied, which found a significant effect for child gender on the relationship between maternal depression and child outcomes. Depressed mothers were found to rate their daughters as having significantly more internalizing behavior problems than did nondepressed mothers, whereas the difference for boys was not significant. Ethnicity and child age were not found to be moderating variables in this sample. Characteristics of mothers' depression, severity and recurrence, were also studied to examine their impact on child outcomes within the depressed sample. Recurrence of maternal depressive episodes was found to impact child outcomes, with the children of women with recurrent depression (defined as three or more episodes) rated by father figures as having more externalizing and internalizing behavior problems, and by teachers as having fewer adaptive skills. Severity of maternal depression was not found to impact child outcomes.
The interaction of workers and firms in the labor market: Applications with integrated employer-employee data
Creators: name: Miranda-de-Larra, Javier
Publisher: name: American University
Year: 2023

description: Labor economists look at outcomes that result from the interactions of both workers and employers. Unfortunately, there exist very few data sets in the United States that integrate both sides of the market and therefore the full nature of many of these interactions is not fully understood. This dissertation addresses some of the shortcomings of traditional data by documenting the construction of an integrated employer-employee (IEE) data set, and by exploring three questions that are of interest to labor economists. Specifically, Chapter one describes the construction and characteristics of the employer-employee data set used in the chapters that follow. This dataset integrates information from administrative sources including, Unemployment Insurance records, ES-202 records and Census files. Strengths and caveats of these data are discussed. Chapters two and three examine the worker-employer relation that governs youth labor markets by describing the statistical association between firm level measures of worker turnover and firm specific compensation and employment practices. I find returns to tenure are positively correlated with turnover while worker ability is negatively correlated with turnover. This is consistent with some theories of turnover and not with others. Chapter four extends the analysis of youth labor markets by examining the impact that early job mobility has on the long-term earnings prospects of young workers. Differences across high and low-turnover sectors of employment are explored. I find evidence that employers in the low-turnover sector discount earnings of workers with a history of early market instability after controlling for worker and firm fixed effects. Scarring may be the result of employers discounting earnings of highly mobile workers or with the workers' failure to acquire skills that are particularly valuable to certain firms. Chapter five investigates the impact of technology adoption on the skill wage differential of workers employed in U.S. manufacturing plants. The chapter shows that technology adoption does not have a significant effect on the earnings of high-skill workers, but negatively affects the earnings of low-skill workers after controlling for worker-plant fixed effects. These results seem to support the skill-biased technological change hypothesis.
Frequentist Hypothesis Testing with Background Uncertainty
Creators: name: Cranmer, Kyle S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We consider the standard Neyman-Pearson hypothesis test of a signal-plus-background hypothesis and background-only hypothesis in the presence of uncertainty on the background-only prediction. Surprisingly, this problem has not been addressed in the recent conferences on statistical techniques in high-energy physics -- although the its confidence-interval equivalent has been. We discuss the issues of power, similar tests, coverage, and ordering rules. The method presented is compared to the Cousins-Highland technique, the ratio of Poisson means, and ``profile'' method.
description: Talk from PhyStat2003, Stanford, Ca, USA, September 2003, 4 pages, LaTeX, 2 eps figures. PSN WEMT004
The interaction of workers and firms in the labor market: Applications with integrated employer-employee data
Creators: name: Miranda-de-Larra, Javier
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 38
subject: Economics

description: Labor economists look at outcomes that result from the interactions of both workers and employers. Unfortunately, there exist very few data sets in the United States that integrate both sides of the market and therefore the full nature of many of these interactions is not fully understood. This dissertation addresses some of the shortcomings of traditional data by documenting the construction of an integrated employer-employee (IEE) data set, and by exploring three questions that are of interest to labor economists. Specifically, Chapter one describes the construction and characteristics of the employer-employee data set used in the chapters that follow. This dataset integrates information from administrative sources including, Unemployment Insurance records, ES-202 records and Census files. Strengths and caveats of these data are discussed. Chapters two and three examine the worker-employer relation that governs youth labor markets by describing the statistical association between firm level measures of worker turnover and firm specific compensation and employment practices. I find returns to tenure are positively correlated with turnover while worker ability is negatively correlated with turnover. This is consistent with some theories of turnover and not with others. Chapter four extends the analysis of youth labor markets by examining the impact that early job mobility has on the long-term earnings prospects of young workers. Differences across high and low-turnover sectors of employment are explored. I find evidence that employers in the low-turnover sector discount earnings of workers with a history of early market instability after controlling for worker and firm fixed effects. Scarring may be the result of employers discounting earnings of highly mobile workers or with the workers' failure to acquire skills that are particularly valuable to certain firms. Chapter five investigates the impact of technology adoption on the skill wage differential of workers employed in U.S. manufacturing plants. The chapter shows that technology adoption does not have a significant effect on the earnings of high-skill workers, but negatively affects the earnings of low-skill workers after controlling for worker-plant fixed effects. These results seem to support the skill-biased technological change hypothesis.
The role of emotions in fast food choices of young adults
Creators: name: Dolgopolova, I.
name: Mohr, B.
name: Grebitus, C.
name: Roosen, J.
name: Dolgopolova, I.
name: Mohr, B.
name: Grebitus, C.
name: Roosen, J.
Publisher: name: Unknown
Year: 2018
Subjects: Food Consumption/Nutrition/Food Safety

description: One of the reasons of higher calorie intake in younger adults is the consumption of food away from home. Emotions have been identified as an important factor influencing food consumption in this age group. A survey and an experiment have been developed to test if there exists the effect of emotions on the amount of calories ordered on an order terminal of a fast food restaurant. Results demonstrate that for the whole sample, none of the factors indicating emotions is significant. For underweight individuals, negative emotions led to an increase in calories ordered. For overweight participants, negative emotions led to a decrease in calories ordered. For the participants in the normal weight group, neither positive nor negative emotions played a significant role in the choice of food options. For overweight individuals order assistant and highlighting choices were most effective method of on-screen communications. We conclude that emotions play an important role in fast food choices of young adults, which is moderated by BMI in a way that negative emotions lead to an increase in calories ordered by underweight participants, while this is the opposite for overweight participants. Acknowledgement : This project was funded by the BMBF.
Antechinus adustus
Creators: name: Dyck, Steve Van
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Dasyuromorphia
Dasyuridae
Antechinus
Antechinus adustus

description: (5) A. arktos versus  A. adustus (Thomas)
 Pelage: A. arktos has a brownish-grey head that changes markedly to an orange-brown rump, fuscous black hindfeet, a thick-based, finely-furred, black tail and an orange-yellow eye and cheek patch; A. adustus has more uniformly dark brown fur with rusty tips on the head and back.
 External Measurements: A. arktos is larger than A. adustus in absolute measurement for males in wt, hb, tv and hf. Female A. arktos tend to be larger than A. adustus in these measurements as well – significance was not achieved in ANOVAs because only three A.arktos females were available for comparison (see Table 5).
 Craniodental Characters: A. arktos is larger than A. adustus in absolute measurement for a range of characters: in males APV, BL, Dent, IOW, NW, OBW, ZW, HT, PL, TC, NWR, PML, UML, HT-B, BuL, I 1 -P 3, LML, I 1 -P 3 and UPL; in females APV, BL, Dent, IOW, OBW, HT, PL, PML, UML, HT-B, BuL, I 1 -P 3, LML, I 1 -P 3 and UPL. A. arktos is significantly larger than A. adustus for IBW in males and PPV in males and females (Table 5).
 Other Comments: A. arktos occur in south-east Qld and north-east NSW in areas of high elevation and rainfall on the Tweed Volcano caldera, whereas A. adustus is known only from the wet tropics in north-east Qld. Genetics: uncorrected pairwise range differences at the mitochondrial gene CytB between A. arktos and A. adustus are 11.8– 12.8%.
description: Published as part of Dyck, Steve Van, 2014, The Black-tailed Antechinus, Antechinus arktos sp. nov.: a new species of carnivorous marsupial from montane regions of the Tweed Volcano caldera, eastern Australia, pp. 101-133 in Zootaxa 3765 (2) on pages 112-113, DOI: 10.11646/zootaxa.3765.2.1, http://zenodo.org/record/5045725
Effect of Technology Innovation on Gender Roles: A case of Fruit Fly IPM Strategy on Women s Decision Making in Mango Production and Marketing in Kenya
Creators: name: Muriithi, B.
name: Gichungi, H.
name: Muriithi, B.
name: Gichungi, H.
Publisher: name: Unknown
Year: 2018
Subjects: Labor and Human Capital

description: Improved technology or production strategies increases returns in agriculture. This escalates women loss of control to agricultural production and marketing due persistent gender disparities in access to productive resources. The International Centre of Insect Physiology and Ecology (icipe) developed an Integrated Pest Management (IPM) strategy for suppression of mango fruit flies among smallholder mango farmers in sub-Saharan Africa. Despite the impressive direct impacts of the icipe s fruit fly IPM strategy, no study had been conducted to determine whether adoption of the strategy has any influence on gender roles in mango production and marketing decision-making. A sample of 600 households from Machakos County was used to investigate the impact of the fruit fly IPM strategy on the gender roles in mango production and marketing decision making. The results showed thatthe proportion of women involved in decision making decreased in 9 of the 13 mango production and marketing decisions. Female spouse access to training, membership to a mango production or marketing group, access to credit, proportion of investment in mango production significantly influenced theirdecision making index. Acknowledgement : The authors would like to acknowledge the Department for International Development (DFID) for financial support. We are also thankful to the African Fruit Fly Programme (AFFP), International Center for Insect Psychology and Ecology (ICIPE), and all farmers who volunteered information and enumerators for their effort.
Optical Magnetometer: Quantum Resonances at pumping repetition rate of 1/n of the Larmor frequency
Creators: name: Baranga, Andrei Ben Amar
name: Gusarov, Alexander
name: Koganov, Gennady A.
name: Levron, David
name: Shuker, Reuben
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The response of a SERF atomic magnetometer to a repetitive short-pulsed pump was investigated. Quantum sub-resonances at a repetition rate of $1/n$ of the Larmor frequency of the magnetic field inside the shield are experimentally observed and theoretically explained. This is a type of synchronization phenomenon. Investigations in single alkali atoms cells as well as mixed alkali atoms of K and Rb are presented. In the later, one species is pumped while the probe is on the other specie polarized by spin exchange. The effect of spin destruction, spin exchange and collisions are studied in order to account for the width of the resonances. Quantum calculations of a three levels $Λ$ model for this phenomenon exhibit a dip at the resonance frequency in the absorption spectrum for both cases of pulsed and CW pump modes and an evidence for EIT.
description: 14 pages, 11 figures
Explaining Poland's development using uncertainty avoidance: An examination of the role of national culture
Creators: name: Coats-Crowson, Judith D.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4410
subject: Sociology
subject: FOS: Sociology

description: There is increasing evidence that a nation's culture influences its development both politically and economically. Even so, there are no widely accepted measures by which to ascertain what cultural factors are most important or how this influence takes place. This dissertation examines the possible role of uncertainty avoidance, one of Hofstede's dimensions of national culture, to help to explain why Poland, a large and progressive country at the middle of the eighteenth century, became part of an area characterized by its "backwardness" in the twentieth century. Although Hofstede's original work has been labeled paradigm-shifting, based on its impact among business and management researchers, this is little evidence to support the reliability of his Uncertainty Avoidance Index or other dimensions of national culture (Power Distance, Masculinity, and Individualism indexes). This dissertation used values and attitude data from the Polish, U.S. and German General Social Surveys to create indexes based on Hofstede's descriptions of uncertainty avoidance. None of the resulting indexes achieved an internal reliability sufficient to conclude that the values inherent within Hofstede Uncertainty Avoidance dimension create a valid index.
Magnetic interactions and the puzzling absence of any Raman mode in EuTiO3
Creators: name: Pappas, P.
name: Liarokapis, E.
name: Calamiotou, M.
name: Bussmann-Holder, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Polycrystalline ceramic samples and a single crystal of EuTiO3 have been investigated by Raman spectroscopy in the temperature range 80-300 K. Although synchrotron XRD data clearly indicated the cubic to tetragonal phase transition around 282 K, no mode from the symmetry allowed Raman active phonons was found in the tetragonal phase, contrary to the case of the homologous SrTiO3. In order to study the evolution of this unique characteristic, ceramics of EuxSr1-xTiO3 (x=0.03-1.0) characterized by synchrotron XRD for the structural phase transition have been also investigated by Raman spectroscopy, verifying the very strong influence on the Raman yield by Eu substitution. By applying an external magnetic field or alternatively hydrostatic pressure modes are activated in the Raman spectra. The temperature dependence of the main mode that is activated shows remarkable agreement with theoretical predictions. We attribute the puzzling absence of the Raman modes to a mechanism related to strong spin-lattice interaction that drives the cubic to tetragonal structural phase transition and makes the Raman tensor antisymmetric. On the contrary, the external perturbations induce a symmetric Raman tensor allowing even symmetry modes to be present in the spectra. Previous EPR, muon scattering and magnetic measurements indicated the presence of small magnetic interactions deep inside the paramagnetic phase. In order to probe those magnetic interactions in our EuTiO3 polycrystalline sample and test our hypothesis, we have performed temperature dependant XAS/XMCD, which support the existence of magnetic nanodomains even close to room temperature.
Damping of Rabi oscillations in quantum dots due to lattice dynamics
Creators: name: Machnikowski, Pawel
name: Jacak, Lucjan
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that the interaction between carriers confined in a quantum dot and the surrounding lattice under external driving of carrier dynamics has a dynamical, resonant character. The quality of Rabi oscillations in such a system depends on the relation between nonlinear spectral characteristics of the driven dynamics and the spectral density of effectively coupled lattice modes (phonon frequencies and density of states). For a large number of Rabi oscillations within a fixed time (allowed by e.g. exciton recombination) the spectrum of the dynamics extends towards high frequencies, coming into resonance with acoustical and optical phonons. Thus, this resonant lattice response strongly restricts the possibility of fully coherent control over the charge state in a quantum dot.
description: Final version. Conference HCIS13
Explaining Poland's development using uncertainty avoidance: An examination of the role of national culture
Creators: name: Coats-Crowson, Judith D.
Publisher: name: American University
Year: 2023

description: There is increasing evidence that a nation's culture influences its development both politically and economically. Even so, there are no widely accepted measures by which to ascertain what cultural factors are most important or how this influence takes place. This dissertation examines the possible role of uncertainty avoidance, one of Hofstede's dimensions of national culture, to help to explain why Poland, a large and progressive country at the middle of the eighteenth century, became part of an area characterized by its "backwardness" in the twentieth century. Although Hofstede's original work has been labeled paradigm-shifting, based on its impact among business and management researchers, this is little evidence to support the reliability of his Uncertainty Avoidance Index or other dimensions of national culture (Power Distance, Masculinity, and Individualism indexes). This dissertation used values and attitude data from the Polish, U.S. and German General Social Surveys to create indexes based on Hofstede's descriptions of uncertainty avoidance. None of the resulting indexes achieved an internal reliability sufficient to conclude that the values inherent within Hofstede Uncertainty Avoidance dimension create a valid index.
Influence of Farm and Lease Type on Crop Insurance Returns
Creators: name: Sharma, S.
name: Walters, C.
name: Sharma, S.
name: Walters, C.
Publisher: name: Unknown
Year: 2018
Subjects: Risk and Uncertainty

description: At the beginning of each agricultural cycle producers face risks from uncertain harvest yields and prices. To assist in managing these risks the federal government offers subsidized crop insurance. Since the 1996 Farm Act, crop insurance has been the cornerstone of risk management. In 2015, federal crop insurance represented over $9.5 billion in premiums and $102 billion in liabilities, compared to only $1.8 billion dollars in premiums and $26 billion in liabilities in 1996 (Risk Management Agency (RMA)). While the premium rate tailoring by the RMA is aimed at improving actuarial performance, it may not be sufficient. That is, are there other farm characteristics that the insurer observes, which deserve consideration? For the producer, this could mean the opportunity for excess returns and for the insurance provider and the government, excess returns imply an inefficient program resulting in misallocation of scarce resources and increase in taxpayer cost. In this article, we empirically examine the impact of two specific farm characteristics, farm size and insured share on returns from crop insurance. Our results suggest that large producers are attaining higher crop insurance returns across regions and crops. Acknowledgement :
Triepeolus bimorulus Rightmyer 2008
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy

description: Triepeolus bimorulus Rightmyer, 2008
[Holotype: AMNH; ♀ Southwestern Research Station (SWRS), 8.05 km W Portal, 1,646 mts, Cochise Co., Arizona; August 2, 1956]
This species is known only from the southwestern USA and BCS, Mexico (Ascher & Pickering 2024). In BCS, it has been recorded in the Gulf Coast and Sarcocaulescent Shrubland ecoregions (Rightmyer, 2008). See fig. 132.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 202, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
An assessment of demographic factors and parental behaviors associated with adverse adolescent mental health outcomes
Creators: name: Marshall, Monica R.
Publisher: name: American University
Year: 2023

description: This study sought to identify demographic and parental behavioral factors that may provide explanations for negative mental health and behavioral outcomes among adolescent children. Factors found to be most strongly associated with negative outcomes were low levels of parental involvement with their adolescent children and low-levels of parent-adolescent closeness. Two primary research questions were investigated in this study. The primary research questions were as follows: (1) Do variations in family demographic factors explain variations in mental health and behavioral outcomes among adolescent children, and, if so, which demographic factors provide such explanations, and which mental health outcomes and behavioral outcomes are affected? (2) Do variations in parental behaviors explain variations in mental health and behavioral outcomes among adolescent children, and, if so, which parental behaviors provide such explanations, and which mental health outcomes and behavioral outcomes are affected?; The data for this study were obtained from the National Longitudinal Study of Adolescent Health (AddHealth). Analyses (univariate and multivariate) of matching data assessed potentially relationships between (a) family demographic and parental behavioral factors, as independent variables, and (b) negative mental health and behavioral outcomes among adolescent children, as dependent variables. Positive, significant relationships were found between parental involvement in the lives of their adolescent children and adolescent depression, anxiety, locus of control, and substance abuse. Negative, significant relationships were found between parental involvement and adolescent suicide ideation and risky sexual behavior. Positive, significant relationships were found between parent-adolescent closeness and adolescent depression, anxiety, locus of control, substance abuse, suicide ideation, and risky sexual behavior.
title: Language learning strategies: a study of older students of German at the University of the Third Age
Creators: name: Ohly, Kim
Publisher: name: The Open University
Year: 2008

description: Laslett’s (1996) concept of the Third Age identifies learning as an important part of successful ageing. As an ageing population shows growing interest in language learning, so research into ‘foreign language geragogy’ (Bemdt 1997, 2003) has expanded, although some early studies of older adult language learners proved inconclusive (Singleton 1989).

The current study investigates older language learners of German and their use of language learning strategies. It modifies Graham’s (1997) strategy categorisation into cognitive, metacognitive, social/affective and communicative.

A mixed method approach involved questionnaires, think-aloud protocols and interviews: 72 learners (all over 50) of German and other languages at the local University of the Third Age provided background information and reported on their strategy use. Think-aloud protocols illustrated how older learners employed learning strategies whilst working on a variety of tasks (reading, speaking, listening, writing). Interviews elicited student perspectives on learning strategies and wider issues such as motivation, beliefs, anxiety and past experiences.

The study concludes that:
• The research instruments were broadly suitable for exploring strategies among older learners, showing individual and general tendencies in language strategy use. Think-aloud protocols may require some participant training.
• Older learners did not employ essentially different learning strategies from other adults; differences were more apparent in affective areas such as motivation.
• It was possible to identify a list of typical strategies employed by older learners.
• The subjects adopted mainly metacognitive and cognitive strategies, adapting them to their individual learning needs. The range of communicative and social/affective strategies was limited, perhaps because think-aloud protocols allowed fewer opportunities for them.

The findings help to identify key implications for supporting the older language learner.
Antechinus agilis Dickman, Parnaby, Crowther & King 1998
Creators: name: Dyck, Steve Van
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Dasyuromorphia
Dasyuridae
Antechinus
Antechinus agilis

description: (6) A. arktos versus  A. agilis Dickman, Parnaby, Crowther & King
 Pelage: A. arktos has a brownish-grey head that changes markedly to an orange-brown rump, fuscous black hindfeet, a thick-based, finely-furred, black tail and an orange-yellow eye and cheek patch; A. agilis is a uniform medium grey to greyish brown from head to rump. A. agilis also has a light-coloured ring of fur around the eyes.
 External Measurements: A. arktos is larger than A. agilis in absolute measurement for wt, hb, tv, hf in males and hf in females. A. arktos is significantly larger than A. agilis in wt for females (Table 5).
 Craniodental Characters: A. arktos is larger than A. agilis in absolute measurement for a range of characters: for males APV, BL, Dent, IBW, IOW, M 2 W, NW, OBW, PPV, R-LM 1, R-LM 1 T, ZW, HT, PL, TC, NWR, PML, UML, HT-B, BuL, I 1 -P 3, LML, I 1 -P 3, M 2 W and UPL; for females APV, BL, Dent, IBW, IOW, OBW, PPV, HT, PL, TC, NWR, PML, UML, HT-B, I 1 -P 3, LML, I 1 -P 3, M 2 W and UPL. A. arktos is significantly larger than A. agilis at R- LM 3 in males and NW in females (Table 5).
 Other Comments: A. arktos occur in south-east Qld and north-east NSW in areas of high elevation and rainfall on the Tweed Volcano caldera, whereas A. agilis is known only from south-eastern Australia, south of around Sydney’s (NSW) latitude. Genetics: Uncorrected pairwise range differences at the mitochondrial gene CytB between A. arktos and A. agilis are 15.1–15.9%.
description: Published as part of Dyck, Steve Van, 2014, The Black-tailed Antechinus, Antechinus arktos sp. nov.: a new species of carnivorous marsupial from montane regions of the Tweed Volcano caldera, eastern Australia, pp. 101-133 in Zootaxa 3765 (2) on pages 113-115, DOI: 10.11646/zootaxa.3765.2.1, http://zenodo.org/record/5045725
Keep Doing What Worked: Behavioral Modelling Priors for Offline Reinforcement Learning
Creators: name: Siegel, Noah Y.
name: Springenberg, Jost Tobias
name: Berkenkamp, Felix
name: Abdolmaleki, Abbas
name: Neunert, Michael
name: Lampe, Thomas
name: Hafner, Roland
name: Heess, Nicolas
name: Riedmiller, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: I.2.6; I.2.9

description: Off-policy reinforcement learning algorithms promise to be applicable in settings where only a fixed data-set (batch) of environment interactions is available and no new experience can be acquired. This property makes these algorithms appealing for real world problems such as robot control. In practice, however, standard off-policy algorithms fail in the batch setting for continuous control. In this paper, we propose a simple solution to this problem. It admits the use of data generated by arbitrary behavior policies and uses a learned prior -- the advantage-weighted behavior model (ABM) -- to bias the RL policy towards actions that have previously been executed and are likely to be successful on the new task. Our method can be seen as an extension of recent work on batch-RL that enables stable learning from conflicting data-sources. We find improvements on competitive baselines in a variety of RL tasks -- including standard continuous control benchmarks and multi-task learning for simulated and real-world robots.
An assessment of demographic factors and parental behaviors associated with adverse adolescent mental health outcomes
Creators: name: Marshall, Monica R.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4410
subject: Sociology
subject: FOS: Sociology

description: This study sought to identify demographic and parental behavioral factors that may provide explanations for negative mental health and behavioral outcomes among adolescent children. Factors found to be most strongly associated with negative outcomes were low levels of parental involvement with their adolescent children and low-levels of parent-adolescent closeness. Two primary research questions were investigated in this study. The primary research questions were as follows: (1) Do variations in family demographic factors explain variations in mental health and behavioral outcomes among adolescent children, and, if so, which demographic factors provide such explanations, and which mental health outcomes and behavioral outcomes are affected? (2) Do variations in parental behaviors explain variations in mental health and behavioral outcomes among adolescent children, and, if so, which parental behaviors provide such explanations, and which mental health outcomes and behavioral outcomes are affected?; The data for this study were obtained from the National Longitudinal Study of Adolescent Health (AddHealth). Analyses (univariate and multivariate) of matching data assessed potentially relationships between (a) family demographic and parental behavioral factors, as independent variables, and (b) negative mental health and behavioral outcomes among adolescent children, as dependent variables. Positive, significant relationships were found between parental involvement in the lives of their adolescent children and adolescent depression, anxiety, locus of control, and substance abuse. Negative, significant relationships were found between parental involvement and adolescent suicide ideation and risky sexual behavior. Positive, significant relationships were found between parent-adolescent closeness and adolescent depression, anxiety, locus of control, substance abuse, suicide ideation, and risky sexual behavior.
Direct instantons, topological charge screening and QCD glueball sum rules
Creators: name: Forkel, Hilmar
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Nonperturbative Wilson coefficients of the operator product expansion (OPE) for the spin-0 glueball correlators are derived and analyzed. A systematic treatment of the direct instanton contributions is given, based on realistic instanton size distributions and renormalization at the operator scale. In the pseudoscalar channel, topological charge screening is identified as an additional source of (semi-) hard nonperturbative physics. The screening contributions are shown to be vital for consistency with the anomalous axial Ward identity, and previously encountered pathologies (positivity violations and the disappearance of the 0^{-+} glueball signal) are traced to their neglect. On the basis of the extended OPE, a comprehensive quantitative analysis of eight Borel-moment sum rules in both spin-0 glueball channels is then performed. The nonperturbative OPE coefficients turn out to be indispensable for consistent sum rules and for their reconciliation with the underlying low-energy theorems. The topological short-distance physics strongly affects the sum rule results and reveals a rather diverse pattern of glueball properties. New predictions for the spin-0 glueball masses and decay constants and an estimate of the scalar glueball width are given, and several implications for glueball structure and experimental glueball searches are discussed.
description: 49 pages, 8 figures
Internationalization paths of fruit export companies from emerging economies: Are they regionally or globally oriented?
Creators: name: Losilla, L.
name: Engler, A.
name: Otter, V.
name: Losilla, L.
name: Engler, A.
name: Otter, V.
Publisher: name: Unknown
Year: 2018
Subjects: International Relations/Trade

description: There is a continuing debate regarding firms internationalization pathways and the approaches used for firm categorization, resulting in controversial identification of the degree of firms globalization. The aim of this paper is to establish a framework to examine the changes in the internationalization strategies of agricultural export companies from emerging economies over time. Thereby seeking to identify conceptual and empirical differences in what is known of export firms acting in non-agricultural sectors in industrialized countries. The matrix of multi-nationality developed by Aggarwal et al. (2011) is extended and tested to classify 233 Chilean fresh fruit exporters according to their internationalization strategies. A longitudinal analysis is conducted over a seven-year period (2009-2015) to explore the dynamics on that internationalization process. Most firms are transregionally (65.12%) and globally oriented (16.06%), mainly following a linear internationalization path in terms of number of markets but acting more as born-global firms in terms of psychic distance. This study provides a more inclusive and nuanced framework than those used in previous studies to classify the level of firms internationalization. It also contributes to existing literature by studying companies from the agricultural sector in Chile longitudinally, as a prime example of emerging economies from Latin America. Acknowledgement : The authors acknowledge the support of the German Academic Exchange Service (DAAD) and the University of Costa Rica on doing this research.
Constrained Controller and Observer Design by Inverse Optimality
Creators: name: Zanon, Mario
name: Bemporad, Alberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Model Predictive Control (MPC) is often tuned by trial and error. When a baseline linear controller exists that is already well tuned in the absence of constraints and MPC is introduced to enforce them, one would like to avoid altering the original linear feedback law whenever they are not active. We formulate this problem as a controller matching similar to [1]-[3], which we extend to a more general framework. We prove that a positive-definite stage cost matrix yielding this matching property can be computed for all stabilizing linear controllers. Additionally, we prove that the constrained estimation problem can also be solved similarly, by matching a linear observer with a Moving Horizon Estimator (MHE). Finally, we discuss various aspects of the practical implementation of the proposed technique in some examples.
Lifting micro-enterprise operators performance using stakeholder engagement model in Abia state, Nigeria
Creators: name: Oteh, O.U.
name: Oteh, O.U.
Publisher: name: Unknown
Year: 2018
Subjects: Agribusiness

description: Abstract The alarming rate of business failure in Nigeria is worrisome. Addressing this challenge require not only government intervention in policy but a multi-stakeholder engagement to share ideas, innovations, and drive success. This study examines factors that militates against performance among microenterprise operators in Abia state, Nigeria. The specific objective is to ascertain the level of profitability of these enterprises and social factors influencing their performance. Multi-stage sampling technique was employed in the selection of respondents and location. Data were collected through interview with the aid of a well-structured questionnaire. Descriptive statistics such as tables, percentages and multi-regression model were employed to analysis data obtained. The study found that the mean profit of operators is small and inadequate to sustain the business. Inflation, government policy, scarcity of raw material militates against operators performance. The study recommends that since government and private sector drive engine of development, hence both must collaborate in addressing these challenges by sharing ideas through stakeholder engagement. Also, investment in agriculture to drive the local content law as a way of addressing challenge of scarcity of raw material among other recommendations. Acknowledgement : The authors wishes to acknowledge the contributions of Dr Agwu Nnanna M. and our many students.
The Status of the H.E.S.S. Project
Creators: name: Hinton, J. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The High Energy Stereoscopic System (H.E.S.S.) - is a system of four, 107 m^2 mirror area, imaging Cherenkov telescopes under construction in the Khomas Highland of Namibia (1800 m asl). The H.E.S.S. system is characterised by a low threshold (~ 100 GeV) and a ~1 % Crab flux sensitivity resulting from the good angular resolution and background rejection provided by the stereoscopic technique. The first two telescopes are operational and first results are reported here. The remaining two telescopes (of H.E.S.S. Phase-I) will be commissioned early in 2004.
description: 8 pages, 16 figures, in 2nd VERITAS Symposium on TeV Astrophysics (eds. L. Fortson and S. Swordy), New Astronomy Reviews (in press)
Climate Smart Pest Management
Creators: name: Lu, L.
name: Elbakidze, L.
name: Lu, L.
name: Elbakidze, L.
Publisher: name: Unknown
Year: 2018
Subjects: Environmental Economics and Policy

description: One of the consequences of projected climatic changes is potentially increase in frequency and intensity of regional agricultural pest outbreaks. This requires new way of analytical thinking, pest management practice, and up-to-date regulation, which we call climate smart pest management. This paper provides an integrated stochastic dynamic framework to examines the use of weather and pest infestation forecasts in agricultural pest management. First, we analytically demonstrate the role of the correlation between weather and pest infestation forecast in pest management using a stochastic optimal control framework. Next, using stochastic dynamic programming we empirically simulate optimal pest management trajectory taking into account correlation between weather and pest population predictions. The empirical case study results illustrate our theoretical inferences and show that 1. Due to faster pest infestation under climate change, farmers are forced to spray earlier in the growing season so that severe cumulative future damage on the biomass is prevented. 2. Pea production profit in the Palouse area of northern Idaho and eastern Washington can be increased by 8.5% if pea aphid management accounts for potential correlation between weather and aphid forecast errors. Acknowledgement :