2,665 research outputs found
Recommended from our members
The History of Massachusetts Transfer and Articulation Policies in Contexts of Evolving Higher Education System Structure, Coordination, and Policy Actors
Community colleges carry out dual missions providing occupational and collegiate preparation in local communities across the United States. These institutions prepare students for advanced study via transfer policies that lead to enrollment in baccalaureate institutions. State higher education systems use transfer and articulation policies to strengthen academic pathways between two-year and four-year institutions. These policies rely on established governance to facilitate student transfer between sectors. The transfer and articulation literature stresses the importance of statewide policy guidelines, yet little has been written about the process of transfer policy development involving state higher education governance and policy groups and actors.
The history of transfer policy formation in Massachusetts presents a unique case. From 1974 to 2009, a series of guidelines were produced. Despite the seemingly long-term commitment to transfer and articulation, controversies around policy authority, implementation, and compliance have persisted. Moreover, transfer and articulation guidelines were created within different public higher education governance settings and comprised diverse policy environments and actors. Research questions focus on categorizing transfer guidelines and investigating how public higher education governance, policy groups, and actors, influenced the development of transfer articulation policy.
This inquiry followed a case study format making use of archival and oral history research methods. Archival research methods converged on obtaining formal records chronicling outcomes of system and policy activity as well as unofficial documents detailing background events. Oral histories supplemented written records with first-person perspectives of policy activity at different points. Policy environments including governance structures, groups, and actors, were then compared across historical periods to better understand how transfer and articulation issues have been perceived, organized, and addressed.
Results point to cyclical policy creation. At times, state higher education governance led the process, and at other times regional collaborations between two-year and four-year institutions resulted in innovative linkages. This history suggests ongoing tension between centralized control and individual campus autonomy, which plays out in transfer guideline implementation. The study offers recommendations for future research in Massachusetts and elsewhere. Ultimately, this inquiry has critical value for higher education systems, institutions, and professionals who guide community college students through the transfer process
The range of the golden-mantle tamarin, Saguinus tripartitus (Milne Edwards, 1878): distributions and sympatry of four tamarin species in Colombia, Ecuador, and northern Peru
A detailed understanding of the range of the golden-mantle tamarin, Saguinus tripartitus (Milne Edwards, 1878), in Amazonian Peru and Ecuador is of particular relevance, not only because it is poorly known but also because it was on the basis of its supposed sympatry with the saddleback tamarin (S. fuscicollis lagonotus) that Thorington (Am J Primatol 15:367–371, 1988) argued that it is a distinct species rather than a saddleback tamarin subspecies, as was believed by Hershkovitz (Living new world monkeys, vol I. The University of Chicago Press, Chicago, 1977). A number of surveys have been carried out since 1988 in the supposed range of S. tripartitus, in both Ecuador and Peru. Here we summarize and discuss these issues and provide a new suggestion for the geographic range of this species; that is, between the ríos Napo and Curaray in Peru and extending east into Ecuador. We also review current evidence for the distributions of Spix’s black-mantle tamarin (S. nigricollis nigricollis), Graells’ black-mantle tamarin (S. n. graellsi), and the saddleback tamarin (S. fuscicollis lagonotus), which are also poorly known, and examine the evidence regarding sympatry between them. We conclude that despite the existence of a number of specimens with collecting localities that indicate overlap in their geographic ranges, the fact that the four tamarin species are of similar size and undoubtedly very similar in their feeding habits militates strongly against the occurrence of sympatry among them
The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic power spectrum between redshifts 0.6 and 1.0
We analyse the clustering of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey Data Release 16 luminous red galaxy sample (DR16 eBOSS LRG) in combination with the high redshift tail of the Sloan Digital Sky Survey III Baryon Oscillation Spectroscopic Survey Data Release 12 (DR12 BOSS CMASS).We measure the redshift space distortions (RSD) and also extract the longitudinal and transverse baryonic acoustic oscillation (BAO) scale from the anisotropic power spectrum signal inferred from 377 458 galaxies between redshifts 0.6 and 1.0, with the effective redshift of zeff = 0.698 and effective comoving volume of 2.72 Gpc3. After applying reconstruction, we measure the BAO scale and infer DH(zeff)/rdrag = 19.30 ± 0.56 and DM(zeff)/rdrag = 17.86 ± 0.37. When we perform an RSD analysis on the pre-reconstructed catalogue on the monopole, quadrupole, and hexadecapole we find, DH(zeff)/rdrag = 20.18 ± 0.78, DM(zeff)/rdrag = 17.49 ± 0.52 and fσ8(zeff) = 0.454 ± 0.046. We combine both sets of results along with the measurements in configuration space and report the following consensus values: DH(zeff)/rdrag = 19.77 ± 0.47, DM(zeff)/rdrag = 17.65 ± 0.30 and fσ8(zeff) = 0.473 ± 0.044, which are in full agreement with the standard CDM and GR predictions. These results represent the most precise measurements within the redshift range 0.6 ≤ z ≤ 1.0 and are the culmination of more than 8 yr of SDSS observations
Understanding interactions in face-to-face and remote undergraduate science laboratories
This paper reviews the ways in which interactions have been studied, and the findings of such studies, in science
education in both face-to-face and remote laboratories. Guided by a systematic selection process, 27 directly
relevant articles were analysed based on three categories: the instruments used for measuring interactions, the
research findings on student interactions, and the theoretical frameworks used in the studies of student
interactions. In face-to-face laboratories, instruments for measuring interactions and the characterisation of the
nature of interactions were prominent. For remote laboratories, the analysis of direct interactions was found to be
lacking. Instead, studies of remote laboratories were mainly concerned with their practical scope. In addition, it is
found that only a limited number of theoretical frameworks have been developed and applied in the research
design. Existent theories are summarised and possible theoretical frameworks that may be implemented in studies
of interactions in undergraduate laboratories are proposed. Finally, future directions for research on the interrelationship between student interactions and laboratory learning are suggested
A Descriptive Morphology of the Ant Genus Procryptocerus (Hymenoptera: Formicidae)
Morphology is the most direct approach biologists have to recognize uniqueness of insect species as compared to close relatives. Ants of the genus Procryptocerus possess important morphologic characters yet have not been explored for use in a taxonomic revision. The genus is characterized by the protrusion of the clypeus forming a broad nasus and antennal scrobes over the eyes. The toruli are located right posterior to the flanks of the nasus opposite to each other. The vertex is deflexed posteriorly in most species. An in-group comparison of the external morphology is presented focusing on the workers. A general morphology for gynes and males is also presented. Previously mentioned characters as well as new ones are presented, and their character states in different species are clarified. For the metasoma a new system of ant metasomal somite nomenclature is presented that is applicable to Aculeata in general. Finally, a Glossary of morphological terms is offered for the genus (available online). Most of the terminology can be used in other members of the Formicidae and Aculeata
Effectiveness of Terbutaline Pump for the Prevention of Preterm Birth. A Systematic Review and Meta-Analysis
Subcutaneous terbutaline (SQ terbutaline) infusion by pump is used in pregnant women as a prolonged (beyond 48-72 h) maintenance tocolytic following acute treatment of preterm contractions. The effectiveness and safety of this maintenance tocolysis have not been clearly established. We aimed to systematically evaluate the effectiveness and safety of subcutaneous (SQ) terbutaline infusion by pump for maintenance tocolysis.MEDLINE, EMBASE, CINAHL, the Cochrane Library, the Centre for Reviews and Dissemination databases, post-marketing surveillance data and grey literature were searched up to April 2011 for relevant experimental and observational studies. Two randomized trials, one nonrandomized trial, and 11 observational studies met inclusion criteria. Non-comparative studies were considered only for pump-related harms. We excluded case-reports but sought FDA summaries of post-marketing surveillance data. Non-English records without an English abstract were excluded. Evidence of low strength from observational studies with risk of bias favored SQ terbutaline pump for the outcomes of delivery at <32 and <37 weeks, mean days of pregnancy prolongation, and neonatal death. Observational studies of medium to high risk of bias also demonstrated benefit for other surrogate outcomes, such as birthweight and neonatal intensive care unit (NICU) admission. Several cases of maternal deaths and maternal cardiovascular events have been reported in patients receiving terbutaline tocolysis.Although evidence suggests that pump therapy may be beneficial as maintenance tocolysis, our confidence in its validity and reproducibility is low, suggesting that its use should be limited to the research setting. Concerns regarding safety of therapy persist
Cognitive impairment induced by delta9-tetrahydrocannabinol occurs through heteromers between cannabinoid CB1 and serotonin 5-HT2A receptors
Delta-9-tetrahydrocannabinol (THC), the main psychoactive compound of marijuana, induces numerous undesirable effects, including memory impairments, anxiety, and dependence. Conversely, THC also has potentially therapeutic effects, including analgesia, muscle relaxation, and neuroprotection. However, the mechanisms that dissociate these responses are still not known. Using mice lacking the serotonin receptor 5-HT2A, we revealed that the analgesic and amnesic effects of THC are independent of each other: while amnesia induced by THC disappears in the mutant mice, THC can still promote analgesia in these animals. In subsequent molecular studies, we showed that in specific brain regions involved in memory formation, the receptors for THC and the 5-HT2A receptors work together by physically interacting with each other. Experimentally interfering with this interaction prevented the memory deficits induced by THC, but not its analgesic properties. Our results highlight a novel mechanism by which the beneficial analgesic properties of THC can be dissociated from its cognitive side effects
Lanthanide compounds containing a benzo-15-crown-5 derivatised [60]fullerene and the related [Tb(H2O)(3)(NO3)(2)(acac)]. C14H20O5 supramolecular adduct
Novel lanthanum(III), europium(III) and terbium(III) compounds of a benzo-15-crown-5 [60]fulleropyrrolidine
were isolated in the solid state and characterised using vibrational (infrared and Raman) spectroscopy and
by 13C CP MAS NMR for the lanthanum(III) compound. The photoluminescence properties were
investigated for the europium(III) and terbium(III) compounds. The related [Tb(H2O)3(NO3)2(acac)]
C14H20O5 [where acac ¼ acetylacetonate and C14H20O5 ¼ benzo-15-crown-5] supramolecular adduct was
isolated using similar synthetic conditions, in the absence of [60]fullerene, and its crystal structure used as a
model for the coordination sphere of the lanthanide [60]fullerene derivatives, with further supporting
evidence given by photoluminescence measurements
- …