The Labeled Magnitude Scale (LMS) is a semantic scale of perceptual intensity characterized by a quasi-logarithmic spacing of its verbal labels. The LMS had previously been shown to yield psychophysical functions equivalent to magnitude estimation (ME) when gustatory, thermal and nociceptive stimuli were presented and rated together, and the upper bound of the LMS was defined as the 'strongest imaginable oral sensation'. The present study compared the LMS to ME within the more limited contexts of taste and smell. In Experiment 1, subjects used both methods to rate either taste intensity produced by sucrose and NaC1 or odor intensity produced by acetic acid and phenyl ethyl alcohol, with the upper bound of the LMS defined as either the 'strongest imaginable taste' or the 'strongest imaginable odor'. The LMS produced psychophysical functions equivalent to those produced by ME. In, Experiment 2 a new group of subjects used both methods to rate the intensity of three different taste qualities, with the upper bound of the LMS defined as the 'strongest imaginable [sweetness, saltiness, or bitterness]'. In all three cases the LMS produced steeper functions than did ME. Experiment 3 tested the hypothesis that the LMS yields data comparable to ME only when the perceptual domain under study includes painful sensations. This hypothesis was supported when the LMS again produced steeper functions that ME after subjects had been explicitly instructed to omit painful sensations (e.g. the 'burn' of hot peppers) from the concept of 'strongest imaginable taste'. We conclude that the LMS can be used to scale sensations of taste and smell when they are broadly defined, but that it should be modified for use in scaling specific taste (and probably odor) qualities. The implications of these results for theoretical issues related to ME, category-ratio scales and the size of the perceptual range in different sensory modalities are discussed.
As there are numerous specialties that have never undergone a similar investigation of their patients, this study has important implications for medical educators in those specialties by supporting their ability to apply the results and recommendations of studies conducted in other specialties to their own.
The Juvenile Detention Alternatives Initiative (JDAI) aims to reduce the use of predispositional detention for juveniles. One core strategy of JDAI is the use of risk assessment instruments to ensure that detention decisions are made objectively. These instruments allow for mandatory and discretionary overrides based on statutory guidelines, aggravating factors, or mitigating factors. This study investigates the use of overrides in a jurisdiction that utilizes the JDAI model. Offense seriousness, prior record, history of escape/runaway, and age were consistent predictors of overrides. African Americans were less likely to receive mitigating overrides, and females were less likely to receive mandatory overrides.
Brucella melitensis is the causative agent of brucellosis in small ruminants and is of considerable economic and public health importance in many countries worldwide. The control of disease in humans depends on the control of disease in livestock; however, few counties with endemic B. melitensis infection have been able to successfully eradicate this pathogen. This underscores the need for further research on the pathogenesis of both virulent and vaccine strains of B. melitensis in the small ruminant host. The aim of the present study was to characterize clinical effects, tissue colonization, shedding, and humoral immune response following B. melitensis infection in goats. Both virulent (16M) and reduced virulence (Rev. 1) strains of B. melitensis were studied. Pregnant goats were infected at 11–14 weeks of gestation with 8 x 106 or 8 x 107 CFU of B. melitensis. Infection of goats with B. melitensis 16M resulted in an 86% abortion rate. This strain disseminated widely in pregnant does post-infection with none of the 15 sampled tissues spared from colonization. Importantly, we report the first isolation of B. melitensis from muscle tissue in ruminants. Pathogenesis of Rev. 1 infection was variable with two does showing minimal colonization and one doe exhibiting disease similar to that of animals infected with fully virulent 16M. Shedding of B. melitensis in milk occurred in all 16M- and Rev. 1- infected goats. In pregnant animals challenged with virulent B. melitensis, median time to seroconversion was 21 days; however, 2 animals did not seroconvert until after abortion.
Nursing specialization in the care of children with cancer provides the foundation for implementing successful childhood cancer and blood disorder treatment programs throughout the world. Excellence in nursing education is at the center of all that is needed to maximize cures for children with cancer in low- and middle-income countries (LMIC). While the burden of childhood cancer care is the highest in LMIC, opportunities for continuing nursing education and specialization are extremely limited. Capacity-building programs using distance-based learning opportunities have been successful in sub-Saharan Africa and provide insight into successful, continuing professional development. The Global Hematology-Oncology Pediatric Excellence (HOPE) program part of Texas Children’s Hospital in Houston, Texas, has developed and implemented a distance-based training program designed for nurses working in sub-Saharan Africa. Following a needs assessment, Global HOPE developed a program using both the Moodle (modular object-oriented dynamic learning environment) distance-based learning platform and computer notebooks that hold the course content. The program teaches basic principles of nursing care for a child with cancer and has been implemented in Malawi, Uganda, and Botswana. Courses are taught using a modular approach and core competencies are established for each module. Frequent teaching sessions using Zoom and WhatsApp reinforce independent learning experiences. Formal course evaluation includes written pre- and posttests, self-competency assessments, and simulated checkoffs on essential pediatric oncology nursing competencies. The success of this distance-based learning program emphasizes the importance of formal training for nurses in LMIC to become full-time specialists in pediatric oncology nursing.
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