Science for early adolescence teachers (science FEAT): A program for research and learning

This article is based on a paper which received the “Innovations in Teaching Science Teachers” award at the 1995 meeting of the Association for the Education of Teachers in Science. The award is made possible by Delta Education. This material is based upon work supported in part by a grant from the National Science Foundation (Grant No. 9253170). Any opinions, findings, and conclusions or recommendations expressed in this article are those of authors and do not necessarily reflect the views of the National Science Foundation.     

The effects of sodium pentobarbital on matching and oddity performance in pigeons

The effects of sodium pentobarbital on matching and oddity performance in pigeons were examined by employing a higher-order conditional discrimination paradigm. In this paradigm, the line orientation which was superimposed on all of the response keys signaled whether a response to the matching color or a response to the nonmatching color was correct. All pigeons had extensive previous training in this paradigm and were tested at each of three dosage levels: 5, 7.5, and 10 mg/kg. For all birds, a clear dose-related decrease in accuracy was observed; however, the effect was not differential for matching and oddity trials. Accuracy reductions were accompanied by an increase in position preference on both types of trials. The data are compatible with recent claims that physical identity of the sample and correct comparison stimulus need have no special status for pigeons.     

Providing medical evaluations for possible child maltreatment to children with special health care needs

OBJECTIVE: Children with special health care needs are known to be at increased risk of all forms of child maltreatment when compared to children without such needs. We describe a health care team's experience providing medical evaluations for suspected child maltreatment to children with special health care needs. METHOD: Consecutive cases seen as outpatients in the Abuse Referral Clinic for Children with Disabilities were abstracted and analyzed. Mail and telephone follow-up contact was attempted after the medical evaluation to determine adherence with treatment recommendations. A subsample of cases for which complete financial information was available was reviewed to determine a reimbursement rate. RESULTS: During the study, 49 children received complete outpatient evaluations. Ages ranged from 3 to 16 years old, and 54% were males. Special needs spanned a wide range of physical, developmental/cognitive and behavioral conditions. The largest number of referrals came from child protective services (42%) followed by referrals from physicians (27%). After the team's comprehensive evaluation, 18% of the children were found to have a history or physical examination that was diagnostic for child maltreatment, 13% were thought to be at high risk, 25% were thought to be at low risk and 44% were thought to have non-abusive etiologies. The collection rate was 14% for an average reimbursement of $38 per case. Only 29 caregivers could be found at follow-up and 22 remembered the recommendations made by the team. Of the 25 cases that were referred for outpatient mental health counseling, 12 (48%) complied. CONCLUSION: Children with a wide range of special health care needs were evaluated in an outpatient special health care needs clinic that offered comprehensive medical evaluations for possible child maltreatment. Medical evaluation services for this group of children were poorly reimbursed. Mental health services were frequently recommended but often not accessed. Child maltreatment teams seeking to serve children with special health care needs will need to plan for service delivery to a potentially diverse group of children and families who may experience difficulty in carrying through on the team's treatment recommendations.     

Complex Variables Throughout the Curriculum

Abstract

We offer many specific detailed examples, several of which are new, that instructors can use (in lecture or as student projects) to revitalize the role of complex variables throughout the curriculum. We conclude with three primary recommendations: revise the syllabus of Calculus II to allow early introductions of complex numbers and linear algebra, include complex variables and some infinite-dimensional linear maps in linear algebra courses, and spice up complex variable courses by better connecting them with the mathematics used in engineering in physics.     

Flexible coding of temporal information by pigeons: Event durations as remember and forget cues for temporal samples

The ability of pigeons to use event durations as remember (R) and forget (F) cues for temporal samples was examined. Pigeons were required to indicate whether a houselight sample stimulus was short (2 sec) or long (6 sec) by pecking a red or a green comparison stimulus. After training with a constant 10-sec delay interval, temporal cues (illumination of the center key) were presented 2 sec after the offset of the temporal samples. For one group, a short (2-sec) temporal cue served as the R cue and a long (6-3ec) temporal cue served as the F cue. This was reversed for a second group of birds. During training, comparison stimuli were always presented following the temporal R cue, but never following the temporal F cue. Tests for the effectiveness of the temporal R and F cues showed that F cues were equally effective in reducing matching accuracy in both groups of birds. It was concluded that pigeons used the duration of the cue to determine whether or not to rehearse the memory code for the temporal sample.     

Testing for universality of Mendeley readership distributions

Altmetrics promise useful support for assessing the impact of scientific works, including beyond the scholarly community and with very limited citation windows. Unfortunately, altmetrics scores are currently available only for recent articles and cannot be used as covariates in predicting long term impact of publications. However, the study of their statistical properties is a subject of evident interest to scientometricians. Applying the same approaches used in the literature to assess the universality of citation distributions, the intention here is to test whether the universal distribution also holds for Mendeley readerships. Results of the analysis carried out on a sample of publications randomly extracted from the Web of Science confirm that readerships seem to share similar shapes across fields and can be rescaled to a common and universal form. Such rescaling results as not particularly effective on the right tails. In other regions, rescaling causes a good collapse of field specific distributions, even for very recent publications.     

Are all citations worth the same? Valuing citations by the value of the citing items

Bibliometricians have long recurred to citation counts to measure the impact of publications on the advancement of science. However, since the earliest days of the field, some scholars have questioned whether all citations should be worth the same, and have gone on to weight them by a variety of factors. However sophisticated the operationalization of the measures, the methodologies used in weighting citations still present limits in their underlying assumptions. This work takes an alternative approach to resolving the underlying problem: the proposal is to value citations by the impact of the citing articles, regardless of the length of their reference list. As well as conceptualizing a new indicator of impact, the work illustrates its application to the 2004–2012 Italian scientific production indexed in the WoS. The proposed impact indicator is highly correlated to the traditional citation count, however the shifts observed between the two measures are frequent and the number of outliers not negligible. Moreover, the new indicator shows greater “sensitivity” when used to identify the highly-cited papers.     

Financing medically-oriented child protection teams in the age of managed health care: a national survey

OBJECTIVE: The direct and indirect costs to society from child maltreatment are estimated to be quite high. The costs related to medical care are of interest to professionals serving on medically-oriented child protection teams that conduct medical evaluations of alleged abuse. This study was designed to explore a number of financially related issues on medically-oriented child protection teams specifically examining the team's staffing, funding sources, reimbursement, budgeting, perceived impact of managed health care and their perception of funding stability. METHOD: Mailed survey of medically-oriented child protection teams throughout the United States using a questionnaire that contained 28 items focused on a variety of financial issues; 14 items were drawn from a similar study done 6 years earlier, which allowed for comparison over time. RESULTS: Responses were received from 320 out of 472 organizations, yielding a response rate of 68%. Inclusion criteria were met by 153 responses and were included in the analysis; 22 of these had also responded to the earlier survey. Median total budget was $300,000 and state and local government funding was the largest revenue source (Mdn = 30%, range: 0-100%), followed by patient care generated revenue (Mdn = 20%, range: 0-100%). The mean charge for an evaluation was $283 (SD = 196.11, range: $0-$800). Forty percent of teams indicated that managed care had no impact where as 49% saw a negative impact. Comparisons between the responses to this survey and the one done 1993 demonstrated that teams were seeing about the same number of patients and showed trends towards increased budget amounts and broader inclusion of various health care and non-health care disciplines on the teams. CONCLUSIONS: No single source of funds for such teams has emerged as the uniform solution for all teams. Creative patchworks composed of various funding sources remain the typical solution to the funding needs of medically-oriented child protection teams.