Miracle-dz/UniFAR-FTUs huggingface dataset:
A continental phenology model for monitoring vegetation responses to interannual climatic variability

Regional phenology is important in ecosystem simulation models and coupled biosphere/atmosphere models. In the continental United States, the timing of the onset of greenness in the spring (leaf expansion, grass green‐up) and offset of greenness in the fall (leaf abscission, cessation of height growth, grass brown‐off) are strongly influenced by meteorological and climatological conditions. We developed predictive phenology models based on traditional phenology research using commonly available meteorological and climatological data. Predictions were compared with satellite phenology observations at numerous 20 km × 20 km contiguous landcover sites. Onset mean absolute error was 7.2 days in the deciduous broadleaf forest (DBF) biome and 6.1 days in the grassland biome. Offset mean absolute error was 5.3 days in the DBF biome and 6.3 days in the grassland biome. Maximum expected errors at a 95% probability level ranged from 10 to 14 days. Onset was strongly associated with temperature summations in both grassland and DBF biomes; DBF offset was best predicted with a photoperiod function, while grassland offset required a combination of precipitation and temperature controls. A long‐term regional test of the DBF onset model captured field‐measured interannual variability trends in lilac phenology. Continental application of the phenology models for 1990–1992 revealed extensive interannual variability in onset and offset. Median continental growing season length ranged from a low of 129 days in 1991 to a high of 146 days in 1992. Potential uses of the models include regulation of the timing and length of the growing season in large‐scale biogeochemical models and monitoring vegetation response to interannual climatic variability.
The Determinants of Firms' Hedging Policies

Abstract We develop a positive theory of the hedging behavior of value-maximizing corporations. We treat hedging by corporations simply as one part of the firm's financing decisions. We examine (1) taxes, (2) contracting costs, and (3) the impact of hedging policy on the firm's investment decisions as explanations of the observed wide diversity of hedging practices among large, widely-held corporations. Our theory provides answers to the questions: (1) why some firms hedge and others do not; (2) why firms hedge some risks but not others; and (3) why some firms hedge their accounting risk exposure while others hedge their economic value.
Last Night a Shrinkage Saved My Life: Economic Growth, Model Uncertainty and Correlated Regressors

We compare the predictive ability of Bayesian methods which deal simultaneously with model uncertainty and correlated regressors in the framework of cross-country growth regressions. In particular, we assess methods with spike and slab priors combined with different prior specifications for the slope parameters in the slab. Our results indicate that moving away from Gaussian g-priors towards Bayesian ridge, LASSO or elastic net specifications has clear advantages for prediction when dealing with datasets of (potentially highly) correlated regressors, a pervasive characteristic of the data used hitherto in the econometric literature.
Firm Financial Structure and Investment

The relationship between capital market equilibrium and firm financial policy has received extensive attention in recent years. Until recently, accepted theory was generally consistent in its view that the diversification effect of new investment on firm earnings is a necessary consideration in project selection. In arguing this position, no distinction was made between the perfect market situation exemplified by the models of Modigliani and Miller (M-M) [9, 10, 11] and those of Sharpe [19], Lintner [6, 7] and Mossin [12] (LSM model) and the traditional case in which firm value is not independent of debt policy, e.g., as might be the case if individual investors cannot lever on terms comparable to those available to firms. In a recent article, Mossin [13] examines the implications of the former case of perfect markets. Using a single period model with riskless rate borrowing and lending by individuals and firms, homogeneous expectations, mean-variance portfolio selection, and no taxes, Mossin shows that the effect on the investing firm's value of a new project is independent of the stochastic properties of the other income earned by the firm. This conclusion and the M-M [10] Proposition I follow from the statistical property of Mossin's model that any income stream has the same value regardless of how that stream is divided into the equity or debt streams of one or more firms; or, equivalently, firm value and financial structure are independent. Schall [18] presents a general proof that firm value and financial structure are independent and that firm investment diversification effects are irrelevant in perfect capital markets.
Convergent Validity and Neuropsychological Correlates of the Schedule for the Assessment of Negative Symptoms (SANS) Attention Subscale

Cognitive deficits have come to be viewed as a hallmark feature of schizophrenic illness. Although laboratory based assessment of patients' cognitive deficits has been well investigated, few studies to date have examined the utility of clinical ratings of cognitive symptoms using the Schedule for the Assessment of Negative Symptoms (SANS) attention subscale. In this report, we examined the convergence between clinical ratings of cognitive impairment using the SANS attention subscale and performance on a variety of neurocognitive tests designed to measure attentional impairment, as well as other cognitive constructs such as working memory and executive functioning. A total of 56 acute schizophrenic inpatients were clinically rated with the SANS and completed the Continuous Performance Test, Digit Span Distraction Test, Wisconsin Card Sorting Task, and the Trailmaking Test. A series of correlational and regression analyses were conducted to test the concurrent and discriminant validity of the SANS attention subscale. Performance measures of attention, but not working memory or executive functioning, were significantly correlated with and moderately predicted the severity of SANS rated inattention. Additionally, the attention subscale was discriminated from the other SANS negative symptom subscales in predicting a laboratory measure of attentional functioning. The SANS attention subscale demonstrated both concurrent and discriminant validity. These data indicate that attentional dysfunction in schizophrenia can be meaningfully rated and interpreted using the SANS.
Do Family Firms Provide More or Less Voluntary Disclosure?

We examine the voluntary disclosure practices of family firms. We find that, compared to nonfamily firms, family firms provide fewer earnings forecasts and conference calls, but more earnings warnings. Whereas the former is consistent with family owners having a longer investment horizon, better monitoring of management, and lower information asymmetry between owners and managers, the higher likelihood of earnings warnings is consistent with family owners having greater litigation and reputation cost concerns. We also document that family ownership dominates nonfamily insider ownership and concentrated institutional ownership in explaining the likelihood of voluntary disclosure. Using alternative proxies for the founding family's presence in the firm leads to similar results.
Leading and Thriving: How Leadership Education Can Improve First-Year Student Success.

Leadership development transforms the lives of many students and leadership educators regularly witness these changes. But little research has articulated what is being taught that facilitates this change, how we can make it happen more often, or how we can measure this change. These transformations contribute to desirable outcomes including student persistence and academic achievement. Leadership studies programs have great potential to contribute to these positive student outcomes especially with first-year students. Using the Social Change Model of Leadership Development, we delineate how the study of leadership aids students in experiencing these transformations, as defined by Schreiner’s Thriving Model, along with example lessons that serve elements in both models. Significant implications are discussed, including greater engagement with first-year students and outreach to at-risk students. This is followed by recommendations for leadership educators and a discussion of future research focus areas.
Cholesterol Curves to Identify Population Norms by Age and Sex in Healthy Weight Children

Objective. Develop clinically applicable charts of lipid values illustrating fluctuations throughout childhood and by sex among healthy weight children. Methods. The National Health and Nutrition Examination Survey (1999-2008) was used to estimate total cholesterol, high-density lipoprotein (HDL), low-density lipoprotein (LDL), and triglycerides by age and sex in healthy weight children age 3 to 17 years. Using LMS procedures, the authors created smoothed curves demonstrating population-based 50th percentile for age and the 75th and 95th percentiles. Results. The curves were based on 7681 children meeting inclusion criteria. Total cholesterol, HDL, and LDL demonstrated peaks at approximately 8 to 12 years for boys. Similar peaks were evident for girls at slightly younger ages, approximately 7 to 11 years. Triglycerides showed peaks for girls, but values were similar across ages for boys. Conclusions. The use of fixed lipid value cutoffs in established guidelines regardless of age or sex likely mislabels many children as abnormal. The authors’ charts may allow for a more nuanced interpretation based on population norms.
Treponema pallidum strain-specific differences in neuroinvasion and clinical phenotype in a rabbit model.

BACKGROUND The relationship between neuroinvasion and other manifestations of syphilis and the infecting strain of Treponema pallidum is not known. METHODS Six groups of 8 rabbits were intravenously infected with 1 x 108 organisms from 1 of 6 strains of T. pallidum. Rabbits were examined 2-3 times/week; blood and cerebrospinal fluid (CSF) were collected weekly and every 2 weeks, respectively, for 10-12 weeks. Degree of CSF pleocytosis and skin-lesion severity were estimated by the area under the white blood cell-versus-time and lesion-versus-time curves. RESULTS Maximum serum Venereal Disease Research Laboratory test titers, time to maximum titer, degree of CSF pleocytosis, and severity of skin lesions differed significantly among infecting strains. Overall, T. pallidum was identified, by reverse-transcriptase polymerase chain reaction, in CSF from 13 (27.7%) of 47 rabbits and was never identified in CSF from rabbits infected with 1 of the strains. The time course of detection varied by infecting strain. Severity of skin lesions and of CSF pleocytosis were inversely correlated (P=.005). CONCLUSIONS There are particularly neuroinvasive T. pallidum strains, and the clinical phenotype of infection varies with infecting strain. This information could ultimately be used to identify patients at increased risk for neuroinvasion and, thus, at risk for neurosyphilis.
Kinetics of Insulin Secretion in Chronic Pancreatitis and Mild Maturity Onset Diabetes (Evidence for “Gut Hormone” Action Beyond Glucoreceptor and Cyclic Adenosine Monophosphate Mediated Insulin Release)

We studied insulin responses to glucose with and without cholecystokinin‐pancreozymin and aminophyllin infusions in normal, chronic pancreatitic and genetic (maturity‐onset) diabetic subjects. Glucose was given alone as separate 5 and 10 g boluses followed by infusion at 250 mg/min. and 500 mg/min., respectively. Chronic pancreatitis patients and genetic diabetic patients had decreased Imax values, indicating a decreased insulin reserve. Sensitivity to glucose was normal in pancreatitic subjects, but the diabetic subjects had a raised G50 value, compatible with glucoreceptor dysfunction. Infusions of aminophyllin enhanced insulin responses (Imax) to glucose injection in normal subjects and to a lesser degree in pancreatitic subjects, but decreased sensitivity to glucose (increase in G50) in both groups. Although the Imax value in pancreatitic subjects was significantly lower than in the control subjects during the glucose plus aminophyllin infusion, the blood glucose concentration in the pancreatitic subjects was nonetheless decreased. This suggests that pancreatitic subjects have increased endogenous insulin sensitivity. Aminophyllin had no effect in diabetic subjects. Crude cholecystokinin‐pancreozymin changed the shape of the glucose/insulin dose response curve in normal, pancreatitic and diabetic subjects. These findings further suggest that the defect in insulin secretion in pancreatitic subjects is partly situated at the cyclic adenosine monophosphate stage of insulin release. Crude cholecystokin‐pan‐creozymin seems to affect insulin release at a point beyond the cyclic adenosine monophosphate stage.
Far Away, So Close: Parliament and Citizens in France

This article accounts for the paradoxical relationship between French citizens and their MPs. It is well known that the French chambers are among the weakest in Europe since the Constitution of the Fifth Republic restricts their role. The French chambers also suffer from their reputation in the public's opinion, as repeated survey results show. Therefore, despite great efforts to communicate, the National Assembly and the Senate have not succeeded in raising citizens' interest or confidence in their activities. However, at the same time, the representative link in France is characterised by MPs' personal involvement in their constituency which is strengthened by specific institutional incentives (electoral rules, accumulation of mandates, weakness of parties, etc.). Using diverse sets of data, including a survey of French députés' opinions and attitudes, this article provides a picture of contrasting features which are still part of today's debate about parliament.
Evidence for parasite-mediated selection during short-lasting toxic algal blooms

Parasites play a role in the control of transient algal blooms, but it is not known whether parasite-mediated selection results in coevolution of the host and the parasites over this short time span. We investigated the presence of coevolution between the toxic dinoflagellate Alexandrium minutum and two naturally occurring endoparasites during blooms lasting a month in two river estuaries, using cross-inoculation experiments across time and space. Higher parasite abundance was associated with a large daily reduction in relative A. minutum abundances, demonstrating strong parasite-mediated selection. There was genetic variability in infectivity in both parasite species, and in resistance in the host. We found no evidence for coevolution in one estuary; however, in the other estuary, we found high genetic diversity in the two parasite species, fluctuations in infectivity and suggestion that the two parasites are well adapted to their host, as in ‘Red Queen’ dynamics. Thus, coevolution is possible over the short time span of a bloom, but geographically variable, and may feedback on community dynamics.
Multilateral Determinants of Regionalism: The Effects of GATT/WTO on the Formation of Preferential Trading Arrangements

Abstract Preferential trading arrangements (PTAs) have spread widely over the past fifty years. During the same era, multilateral openness has grown to unprecedented heights, spurred by the General Agreement on Tariffs and Trade (GATT) and its successor, the World Trade Organization (WTO). If the cornerstone of the manifestly successful multilateral regime is nondiscrimination, why have its members increasingly resorted to preferential liberalization? We argue that developments at the heart of GATT/WTO encourage its members to form PTAs as devices to obtain bargaining leverage within the multilateral regime. Specifically, the growth in GATT/WTO membership, the periodic multilateral trade negotiation rounds, as well as participation and, especially, losses in formal GATT/WTO disputes, have led its members to seek entrance into PTAs. Conducting the first statistical tests on the subject, we find strong evidence in support of this argument.
Privatisation in a developing country: insights from the Gambia

Purpose – The purpose of this paper is to study the privatisation process and its impact on organisational change in the electricity industry in the Gambia.Design/methodology/approach – A qualitative methodology was used for the study as qualitative techniques make use of a holistic approach, which allows for the assembling of a comprehensive and complete picture of the process under investigation.Findings – The findings from the research suggest that change processes that are endogenous are more likely to achieve their desired objectives when compared to exogenous changes.Research limitations/implications – The study suggests that there is a relationship between the locus of change and the level of trust associated with the drivers of change. Future research on privatisation could make a significant contribution if focussed on the social processes of privatisation.Practical implications – The study shows that privatisation will only occur if all interests become associated with a reformative pattern of v.
Regional lung function determined by electrical impedance tomography during bronchodilator reversibility testing in patients with asthma

The measurement of rapid regional lung volume changes by electrical impedance tomography (EIT) could determine regional lung function in patients with obstructive lung diseases during pulmonary function testing (PFT). EIT examinations carried out before and after bronchodilator reversibility testing could detect the presence of spatial and temporal ventilation heterogeneities and analyse their changes in response to inhaled bronchodilator on the regional level. We examined seven patients suffering from chronic asthma (49 ± 19 years, mean age ± SD) using EIT at a scan rate of 33 images s−1 during tidal breathing and PFT with forced full expiration. The patients were studied before and 5, 10 and 20 min after bronchodilator inhalation. Seven age- and sex-matched human subjects with no lung disease history served as a control study group. The spatial heterogeneity of lung function measures was quantified by the global inhomogeneity indices calculated from the pixel values of tidal volume, forced expiratory volume in one second (FEV1), forced vital capacity (FVC), peak flow and forced expiratory flow between 25% and 75% of FVC as well as histograms of pixel FEV1/FVC values. Temporal heterogeneity was assessed using the pixel values of expiration times needed to exhale 75% and 90% of pixel FVC. Regional lung function was more homogeneous in the healthy subjects than in the patients with asthma. Spatial and temporal ventilation distribution improved in the patients with asthma after the bronchodilator administration as evidenced mainly by the histograms of pixel FEV1/FVC values and pixel expiration times. The examination of regional lung function using EIT enables the assessment of spatial and temporal heterogeneity of ventilation distribution during bronchodilator reversibility testing. EIT may become a new tool in PFT, allowing the estimation of the natural disease progression and therapy effects on the regional and not only global level.
HCI and Societal Issues: A Framework for Engagement

Human-computer interaction (HCI) is much broader than the study of interface design and input devices. It includes considerations of the social, political, ethical, and societal implications of computer systems. Concerns such as privacy, accessibility, universal design, and voting usability have led to active HCI research. Our examination of HCI responses to these and other issues informs a model of social engagement based on societal influences that motivate various responses from the HCI community. This model provides suggestions for engagement with issues that are likely to grow in importance over the next several years. By focusing on these issues, HCI researchers may make still greater contributions toward addressing societal concerns.
Strategic Campaign Coverage, Public Opinion, and Mobilization in a Referendum

This study investigates the effects of exposure to strategic news coverage on political cynicism and campaign evaluations using a nationally representative two-wave panel study and a content analysis of the national news media coverage of the 2000 Danish referendum campaign on the introduction of the euro. The study shows (a) voters were generally cynical about the referendum campaign, (b) the level of political cynicism and negativity about the campaign increased during the campaign, and (c) exposure to news that reported about the campaign in terms of strategy contributed to an increase in political cynicism and negative campaign evaluations. Turnout, however, remained high, suggesting that strategic news coverage and political cynicism in the campaign did not diminish mobilization. The study suggests that the conclusions of previous research about the link between news, cynicism, and participation in U.S. elections need to be modified when other national and electoral contexts are considered. Decreasing trust in political institutions and increasing public cynicism about politics have led scholars to search for explanations in terms of social and cultural changes and developments in political parties and partisanship (e.g., Abramson & Aldrich, 1982; Miller, 1974; Nye, Zelikow, & King, 1997). The contents of campaign communication and political campaigning styles have also been blamed for driving some of these trends. Beginning with the “video-malaise” thesis (Robinson, 1976), several studies have focused on the role played by the media in undermining political trust and producing political cynicism (e.g., Hart, 1994). Patterson (1993), for example, argued that “election news, rather than serving to bring candidates and voters together, drives a wedge between them” (p. 52). Cappella and Jamieson (1997)
Gender Mainstreaming Unraveled: The Case of DDRR in Liberia

In the past women have been excluded from peace initiatives. However, with the advent of UNSCR 1325 (2000) women's agency in the process has been heightened through a new framework for involvement. UNSCR 1325 is a policy document that acknowledges the link between women, peace, and security and uses gender mainstreaming as a mechanism to implement its objectives. Yet in spite of its policy advancements, over a decade later women still do not participate equally in peace and security initiatives that impact on the sustainability of peace. This article aims to explore the context of this framework through considerations of the gender mainstreaming provision in the disarmament, demobilization, rehabilitation, and reintegration (DDRR) process in Liberia. Using interviews with women associated with fighting forces (WAFFs)/ex-combatants the article argues that although there was a specific targeted focus showing some gender responsive design and coordination, WAFFs’/ex-combatants’ unique needs, especially those of a social and psychological nature, were poorly addressed. In addition, the commentary shows that the focus did not attend to structural inequality issues such as sexual and gender based violence (SGBV).
Closed Genome Sequence of Octadecabacter temperatus SB1, the First Mesophilic Species of the Genus Octadecabacter

ABSTRACT The Gram-negative alphaproteobacterium Octadecabacter temperatus SB1 (DSM 26878) belongs to the marine Roseobacter clade. The genome of this strain is the smallest closed genome of the Roseobacter clade. O. temperatus SB1 is the first described nonpolar mesophilic isolate of the genus Octadecabacter and the type strain of the species.