Miracle-dz/UniFAR-FTUs huggingface dataset:
Phytoplankton community response to a manipulation of bioavailable iron in HNLC waters of the subtropical Pacific Ocean

Studies in high nutrient, low chlorophyll (HNLC) regions have demonstrated that increased Fe availability results in an increase in phytoplankton biomass and changes in community composition. Here we present experiments in which the availability of iron (Fe) was increased or reduced to monitor the response of individual groups of phytoplankton (large eukaryotes, pico- eukaryotes and cyanobacteria) by flow cytometry. Additions (0.5 to 5.0 nM Fe) and reductions in available Fe (through addition of 1 to 10 nM of the fungal siderophore desferrioxamine B) were made to enclosed communities from the South American eastern boundary current off Peru, where ambi- ent dissolved Fe concentrations were <100 pM. As predicted, chlorophyll concentrations increased in the added Fe treatments relative to the control, indicative of Fe limitation. Flow cytometry demon- strated that this was due to increases in the abundance of large eukaryotes that are Fe-starved under ambient conditions. Cyanobacterial abundance increased and decreased linearly with Fe availabil- ity, suggesting that cyanobacteria were Fe-limited but not Fe-starved. In contrast, picoeukaryote cell abundance increased with decreasing Fe availability, although chlorophyll cell -1 in this group responded in an inverse manner. The results demonstrate that members of the marine phytoplankton community respond differently to Fe availability, which may influence the outcome of biological competition among organisms in Fe-limited environments.
Information Heterogeneity and Intended College Enrollment

Despite a robust college premium, college attendance rates in the United States have remained stagnant and exhibit a substantial socioeconomic gradient. We focus on information gaps— specifically, incomplete information about college benefits and costs—as a potential explanation for these patterns. In a nationally representative survey of U.S. household heads, we show that perceptions of college costs and benefits are severely and systematically biased: 74 percent of our respondents underestimate the true benefits of college (average earnings of a college graduate relative to a non-college worker in the population), while 77 percent report public college costs that exceed actual sticker costs. There is substantial heterogeneity in beliefs, with larger biases for the more disadvantaged groups, lower-income and non-college households. We show that these biases are problematic since they (indirectly) impact the respondents’ reported intended likelihood of their (pre-college-age) child attending college. We simulate an “information intervention,” and find that were individuals to be provided with the correct population distribution of college costs and returns, the intended child’s college attendance would increase significantly, by about 0.2 of the standard deviation in the baseline intended likelihood. Importantly, as a result of the simulated intervention, gaps in college attendance by household income or parents’ education persist but decline by 30 to 50 percent.
Ideology–Driven opinion formation in Europe: The case of attitudes towards the third sector in Sweden

This paper uses attitudes towards the third sector in Sweden to test general assumptions about how citizens in West European political systems apply ideological schemas as shortcuts to political preferences. Attitudes towards the third sector are found to be affected by all ideological schemas reflected in the Swedish party system (state-market, Christian traditionalism, and growth-ecology). Contrary to what is implied by findings from America, these effects are very stable across socio-economic groups (especially those of the dominant state-market schema). Similarly, no interaction effects of political sophistication could be traced, and the relative impact of the schemas remains the same regardless of whether or not the third sector is presented as an alternative to the welfare state. The implications of these findings for the nature of public opinion formation in ideologically clear and structured political systems are discussed.
Job Stability and Labor Mobility in Urban Mexico: A Study Based on Duration Models and Transition Analysis

Can the relatively slow growth of the formal sector in Mexico during the 1990s be attributed to a rigid labor market and to low turnover rates? Is the increasing share of workers in the informal sector and of self-employed workers evidence of market segmentation, and hence a source of inequality and poverty? Or, as suggested by Maloney (1997), could the relatively large and symmetric flows of workers among all sectors (formal, informal, self-employed, unemployed, etc. ) be more consistent with a well-integrated market where workers search across sectors for job opportunities than one where informal workers seek permanent status in the formal sector and stay until they retire? [1] [1] Maloney, (1997, p. 13).
Novel approaches to the pharmacotherapy of schizophrenia

Numerous attempts to extend the pharmacotherapy of schizophrenia beyond conventional neuroleptics are reviewed. Clozapine and melperone are atypical neuroleptics that produce few extrapyramidal side effects during acute usage and possible less tradive dyskinesia with prolonged use. Decreasing dopamingeric activity with a tyrosine hydroxylase inhibitor or dopamine autoreceptor agonists may also be of value. Neuroleptics that block voltage‐sensitive calcium channels or calcium channel blockers per se have been advocated for treatment of negative symptoms or the deficit state. Among other possible clinical approaches reviewed are: beta adrenergic blockers, clonidine, tryptophan, 5‐hydroxytryptophan, fenfluramine, GABA drugs, including high dose benzodiazepines, lithium, carbamazepine, opioid agonists and antagonists, gamma‐endorphins, TRH analogs and vasopressin. Most studies indicate these agents produce inconsistent or slight‐to‐modest benefits, either in comparison with standard neuroleptic drugs or inaddition to neuroleptics, in groups of schizophrenic patients, including some double blind placebo‐controlled trials. Those individuals who do respond sometimes, but not always, fail to relapse when the experimental drug is discontinued or fail to respond to it in subsequent trials. Consistent with the presumed heterogeneity of schizophrenia, there is some evidence supporing non‐neuroleptic drug treatment for specific schizophrenic subtypes. The various stages of this usually life‐long disorder, together with the possible mutability of the underlying etiological factors over time, requires the utmost care in clinical trials.
Multivariate Brain Prediction of Heart Rate and Skin Conductance Responses to Social Threat

Psychosocial stressors induce autonomic nervous system (ANS) responses in multiple body systems that are linked to health risks. Much work has focused on the common effects of stress, but ANS responses in different body systems are dissociable and may result from distinct patterns of cortical–subcortical interactions. Here, we used machine learning to develop multivariate patterns of fMRI activity predictive of heart rate (HR) and skin conductance level (SCL) responses during social threat in humans (N = 18). Overall, brain patterns predicted both HR and SCL in cross-validated analyses successfully (rHR = 0.54, rSCL = 0.58, both p < 0.0001). These patterns partly reflected central stress mechanisms common to both responses because each pattern predicted the other signal to some degree (rHR→SCL = 0.21 and rSCL→HR = 0.22, both p < 0.01), but they were largely physiological response specific. Both patterns included positive predictive weights in dorsal anterior cingulate and cerebellum and negative weights in ventromedial PFC and local pattern similarity analyses within these regions suggested that they encode common central stress mechanisms. However, the predictive maps and searchlight analysis suggested that the patterns predictive of HR and SCL were substantially different across most of the brain, including significant differences in ventromedial PFC, insula, lateral PFC, pre-SMA, and dmPFC. Overall, the results indicate that specific patterns of cerebral activity track threat-induced autonomic responses in specific body systems. Physiological measures of threat are not interchangeable, but rather reflect specific interactions among brain systems. SIGNIFICANCE STATEMENT We show that threat-induced increases in heart rate and skin conductance share some common representations in the brain, located mainly in the vmPFC, temporal and parahippocampal cortices, thalamus, and brainstem. However, despite these similarities, the brain patterns that predict these two autonomic responses are largely distinct. This evidence for largely output-measure-specific regulation of autonomic responses argues against a common system hypothesis and provides evidence that different autonomic measures reflect distinct, measurable patterns of cortical–subcortical interactions.
The genetic basis of early‐life morphological traits and their relation to alternative male reproductive tactics in Atlantic salmon

Although heritability estimates for traits potentially under natural selection are increasingly being reported, their estimation remains a challenge if we are to understand the patterns of adaptive phenotypic change in nature. Given the potentially important role of selection on the early life phenotype, and thereby on future life history events in many fish species, we conducted a common garden experiment, using the Atlantic salmon (Salmo salar L.), with two major aims. The first objective is to determine how the site of origin, the paternal sexual tactic and additive genetic effects influence phenotypic variation of several morphological traits at hatching and emergence. The second aim is to test whether a link exists between phenotypic characteristics early in life and the incidence of male alternative tactics later in life. We found no evidence of a site or paternal effect on any morphological trait at hatching or emergence, suggesting that the spatial phenotypic differences observed in the natural river system from which these fish originated are mainly environmentally driven. However, we do find significant heritabilities and maternal effects for several traits, including body size. No direct evidence was found correlating the incidence of precocious maturation with early life characteristics. We suggest that under good growing conditions, body size and other traits at early developmental stages are not reliable cues for the surpassing of the threshold values associated with male sexual development.
The dilemma of internal evaluation in higher education: a longitudinal case study

Purpose – This paper aims to report the process and outcomes of a case study which introduced internal evaluation procedures into academic departments of a university in Iran. The purpose of the study was to identify what benefits could arise from using internal evaluation, and what obstacles existed to its successful introduction.Design/methodology/approach – This paper reports a case study of internal evaluation within the academic departments of a university in Iran. The case study research used a range of methods to collect information on the operation of the intervention. This paper addresses the findings of a recent longitudinal research in relation to the issue of internal evaluation. A qualitative methodology was used to gain the perceptions of faculty members and department directors and reactions to the effects of the internal evaluation on their work and improvement of department quality. The methods of data collection included interviews, group discussions and workshops.Findings – It was concl.
A prospective analysis of marital relationship factors and quality of life in diabetes.

OBJECTIVE To prospectively assess the relation between marital relationship domains (i.e., intimacy and adjustment) and health-related quality of life (HRQoL) and glycemic control of individuals with diabetes. RESEARCH DESIGN AND METHODS A previous cross-sectional study assessed the relationship between marital quality and adaptation to diabetes for 78 insulin-treated adults. Each participant completed two marital quality measures (Spanier Dyadic Adjustment Scale and Personal Assessment of Intimacy in Relationships Scale) at time 1 (T1). A total of 61 subjects were contacted two years later (time 2 [T2]) and re-administered four HRQoL measures (Diabetes Quality of Life Scale, Medical Outcomes Study Health Survey-SF36, Problem Areas in Diabetes Scale, and Positive and Negative Affect Schedule). Glycemic control was assessed by HbA(1c). Demographic data (age, sex, type and duration of diabetes, years married, other medical problems, family history, and years of education) were gathered from charts and questionnaires. Linear regression analyses were used to assess the ability of the two marital measures at T1 to predict HRQoL at T2, controlling for confounding HRQoL and baseline subject variables. RESULTS Both of the marital quality measures at T1 were prospective predictors of aspects of HRQoL at T2. Less diabetes-related distress at T2 was predicted by better marital adjustment at T1. Greater satisfaction with aspects of the diabetes care regimen at T2 was predicted by better marital adjustment and greater perceived marital intimacy at T1. Neither marital measure predicted general HRQoL or glycemic control. CONCLUSIONS For insulin-treated adults with diabetes, quality of marriage prospectively predicts diabetes-related quality of life. This study highlights the sensitivity of diabetes-specific measures. Future work should explore the value of interventions that target the spouse and/or couple.
‘Who wants to feel white?’ Race, Dutch culture and contested identities

Abstract Is the concept of ‘whiteness’ applicable to the Netherlands (and – mainland Europe)? This article explores cultural expressions of white normativity and possible interpretations of the notion of whiteness as identity. For that purpose we combine two data sets: first white and/or Dutch normativity in political and public life and in the media are discussed, and, second, everyday experiences of racial and/or national identity among whites. The former includes MA theses on newspaper coverage of the Dutch multicultural society. The latter draws from student essays about the meaning of whiteness in their life histories. Dutch students avoid references to ‘skin colour’ and to ‘whiteness’ because of the ‘racial’ connotations. Inequalities are not denied but recognized and verbalized more readily in terms of ethnicity, citizenship, national identity or western superiority and civilization.
Feminist Poststructuralism and Discourse Analysis: Contributions to Feminist Psychology

In this article I suggest that feminist poststructuralism (Weedon, 1987) is of great potential value to feminist psychologists seeking more satisfactory ways of theorizing gender and subjectivity. Some key elements of this theoretical perspective are discussed, including an understanding of knowledge as socially produced and inherently unstable, an emphasis on the importance of language and discourse, and a decentering of the subject. Discourse analysis is discussed as one way of working that is consistent with feminist poststructuralist theory. To illustrate this approach, an example is presented from my work on the sexual coercion of women within heterosexual relationships.
Role of Primate Substantia Nigra Pars Reticulata in Reward-Oriented Saccadic Eye Movement

To test the hypothesis that the basal ganglia are related to reward-oriented saccades, we examined activity of substantia nigra pars reticulata (SNr) neurons by using a one-direction-rewarded version of the memory-guided saccade task (1DR). Many SNr neurons changed (decreased or increased) their activity after and before a visual cue (post-cue and pre-cue activity). Post-cue decreases or increases tended to be larger to a contralateral cue. They were often modulated prospectively by the presence or absence of reward, either positively (enhanced in the rewarded condition) or negatively (enhanced in the nonrewarded condition). The positive reward modulation was more common among decreasing type neurons, whereas no such preference was observed among increasing type neurons. The reward-contingent decrease in SNr neuronal activity would facilitate rewarded saccades by inducing disinhibition in superior colliculus (SC) neurons. In contrast, the increase in SNr activity would suppress a saccade less selectively (rewarded or nonrewarded) by augmenting inhibition of SC neurons. The post-cue activity was often preceded by anticipatory pre-cue activity. Most typically, post-cue decrease was preceded by pre-cue decrease, selectively when the contralateral side was rewarded. This would reinforce the reward-oriented nature of SNr neuronal activity. The decreases and increases in SNr activity may be derived directly and indirectly, respectively, from the caudate (CD), where neurons show reward-contingent pre-cue and post-cue activity. These results suggest that the CD–SNr–SC mechanism would promote saccades oriented to reward.
Dynamic Growth Models of Self-Esteem and Adolescent Alcohol Use

Latent growth modeling was used to test dynamic relations between self-esteem and alcohol use in 740 middle school youth assessed at four time points. Self-esteem was characterized by a negative growth trajectory, whereas alcohol use increased steadily in a linear fashion. An initial simplified model positing bidirectional influences indicated an inverse relation between changes in self-esteem and alcohol use over time, but that initial levels of neither alcohol use nor self-esteem influenced changes in the other construct. With the addition of external covariates (i.e., gender and indices of social skills and competence risk), findings indicated that high initial levels of self-esteem fostered more increases in alcohol use compared to low initial levels of self-esteem. Findings further indicated that youth with poor competence skills advanced more rapidly in their alcohol use and declined more gradually in their self-esteem, and that poor social skills accelerated the rate of decline in self-esteem. Results indicate that self-esteem is part of a dynamic set of etiological forces that instigate early-stage alcohol use.
Optimal MRI Sequence for Identifying Occlusion Location in Acute Stroke: Which Value of Time-Resolved Contrast-Enhanced MRA?

BACKGROUND AND PURPOSE: Identifying occlusion location is crucial for determining the optimal therapeutic strategy during the acute phase of ischemic stroke. The purpose of this study was to assess the diagnostic efficacy of MR imaging, including conventional sequences plus time-resolved contrast-enhanced MRA in comparison with DSA for identifying arterial occlusion location. MATERIALS AND METHODS: Thirty-two patients with 34 occlusion levels referred for thrombectomy during acute cerebral stroke events were consecutively included from August 2010 to December 2012. Before thrombectomy, we performed 3T MR imaging, including conventional 3D-TOF and gradient-echo T2 sequences, along with time-resolved contrast-enhanced MRA of the extra- and intracranial arteries. The 3D-TOF, gradient-echo T2, and time-resolved contrast-enhanced MRA results were consensually assessed by 2 neuroradiologists and compared with prethrombectomy DSA results in terms of occlusion location. The Wilcoxon test was used for statistical analysis to compare MR imaging sequences with DSA, and the κ coefficient was used to determine intermodality agreement. RESULTS: The occlusion level on the 3D-TOF and gradient-echo T2 images differed significantly from that of DSA (P < .001 and P = .002, respectively), while no significant difference was observed between DSA and time-resolved contrast-enhanced MRA (P = .125). κ coefficients for intermodality agreement with DSA (95% CI, percentage agreement) were 0.43 (0.3%–0.6; 62%), 0.32 (0.2%–0.5; 56%), and 0.81 (0.6%–1.0; 88%) for 3D-TOF, gradient-echo T2, and time-resolved contrast-enhanced MRA, respectively. CONCLUSIONS: The time-resolved contrast-enhanced MRA sequence proved reliable for identifying occlusion location in acute stroke with performance superior to that of 3D-TOF and gradient-echo T2 sequences.
Despite the Odds: The Contentious Politics of Education Reform

Despite the Odds: The Contentious Politics of Education Reform. By Merilee S. Grindle. Princeton: Princeton University Press, 2004. 288p. $55.00 cloth, $22.95 paper. No one argues with the claim that education is a necessary ingredient for any recipe for economic and social development. With higher rates of literacy and numeracy, with more years of schooling, a cornucopia of benefits emerge—from lower birth rates to healthier workers to more autonomous women to more engaged citizens. And yet despite the recognition that everything good comes from education, expanding and reforming public education is a costly and contentious process in all political systems. Scholars and politicians alike are pessimistic that educational reform can be instituted. Given the costs and the conflict, what can explain successful implementation of educational reforms?
The Effects of Sibling Coviewing on Preschoolers' Reactions to a Suspenseful Movie Scene

This experiment assesses the impact of watching television with an older sibling on preschoolers' reactions to a suspenseful movie scene. Preschoolers viewed one of two versions of the scene (normal, dream) either alone or with an older sibling. The two versions were identical except that the dream version included a prologue and an epilogue. Both the prologue and epilogue used standard production techniques to convey that the story was just a dream. Results revealed that coviewing had both negative and positive effects. Unexpectedly, watching with an older sibling tended to reduce preschoolers' ability to recognize the dream in the program. However, preschoolers who viewed with an older sibling were less emotionally aroused and liked the program more than did those who watched alone. Mediating processes during coviewing, such as the nature of the talk and visual attention to the television, were used to explain the results.
MODIS Reflective Solar Bands On-Orbit Lunar Calibration

The moderate resolution imaging spectroradiometer (MODIS) protoflight model on-board the Terra spacecraft and the MODIS flight model 1 on-board the Aqua spacecraft were launched on December 18, 1999 and May 4, 2002, respectively. They view the moon through the space view (SV) port approximately once a month to monitor the long-term radiometric stability of their reflective solar bands (RSBs). The lunar irradiance observed by MODIS depends on the viewing geometry. Algorithms were developed to select lunar views such that these geometric effects are minimized. In each MODIS lunar observation, the moon can be viewed in multiple scans. The lunar irradiance of a MODIS RSB can be derived from the response of all detectors of a spectral band in one scan which fully covers the moon, from that of one detector in multiple scans or from the response of all detectors in multiple scans. Based on lunar observations, a set of coefficients is defined and derived to trend MODIS system response degradation at the angle of incidence (AOI) of its SV port. It is shown that the degradation is both wavelength and mirror side dependent. Since launch, Terra and Aqua MODIS band 8 (412 nm) mirror side one have degraded 36% and 17%, respectively, at the AOI of the SV. A comparison between the lunar coefficients and those derived from the MODIS on-board solar diffuser (SD) calibrations shows that the response change of the MODIS RSB is both AOI and time dependent. Time-dependent response versus scan angle (RVS) lookup tables derived from lunar views, SD calibration, and Earth-view observations have been used to maintain the quality of the L1B data for both the Terra and Aqua MODIS RSB. The corrections provided by the RVS in the Terra and Aqua MODIS data from the 412-nm band are as large as 14% and 6.2%, respectively.