16,504 research outputs found
Mixing fuel particles for space combustion research using acoustics
Part of the microgravity science to be conducted aboard the Shuttle (STS) involves combustion using solids, particles, and liquid droplets. The central experimental facts needed for characterization of premixed quiescent particle cloud flames cannot be adequately established by normal gravity studies alone. The experimental results to date of acoustically mixing a prototypical particulate, lycopodium, in a 5 cm diameter by 75 cm long flame tube aboard a Learjet aircraft flying a 20 sec low gravity trajectory are described. Photographic and light detector instrumentation combine to measure and characterize particle cloud uniformity
Set Systems Containing Many Maximal Chains
The purpose of this short problem paper is to raise an extremal question on
set systems which seems to be natural and appealing. Our question is: which set
systems of a given size maximise the number of -element chains in the
power set ? We will show that for each fixed
there is a family of sets containing
such chains, and that this is asymptotically best possible. For smaller set
systems we are unable to answer the question. We conjecture that a `tower of
cubes' construction is extremal. We finish by mentioning briefly a connection
to an extremal problem on posets and a variant of our question for the grid
graph.Comment: 5 page
Early and late complications of bariatric operation.
Weight loss surgery is one of the fastest growing segments of the surgical discipline. As with all medical procedures, postoperative complications will occur. Acute care surgeons need to be familiar with the common problems and their management. Although general surgical principles generally apply, diagnoses specific to the various bariatric operations must be considered. There are anatomic considerations which alter management priorities and options for these patients in many instances. These problems present both early or late in the postoperative course. Bariatric operations, in many instances, result in permanent alteration of a patient\u27s anatomy, which can lead to complications at any time during the course of a patient\u27s life. Acute care surgeons diagnosing surgical emergencies in postbariatric operation patients must be familiar with the type of surgery performed, as well as the common postbariatric surgical emergencies. In addition, surgeons must not overlook the common causes of an acute surgical abdomen-acute appendicitis, acute diverticulitis, acute pancreatitis, and gallstone disease-for these are still among the most common etiologies of abdominal pathology in these patients
Trademarks--Section 44(d) of the Lanham Act--Use in Commerce by the Foreign Applicant as a Prerequisite to Securing a United States Trademark Registration--John Lecroy & Son, Inc. v. Langis Foods Ltd.
Trademarks--Section 44(d) of the Lanham Act--Use in Commerce by the Foreign Applicant as a Prerequisite to Securing a United States Trademark Registration--John Lecroy & Son, Inc. v. Langis Foods Ltd.
Measuring Supervisor Self-Efficacy: Development and Validation of the Psychotherapy Supervisor Self-Efficacy Scale
Psychotherapy supervision is an important aspect of clinical training and professional development. Researchers have developed models of psychotherapy supervisor development, and measures for evaluating supervisor competence have also been proposed. Instruments for measuring psychotherapy supervisor self-efficacy, however, have not been developed. This study examined the literature concerning psychotherapy supervision and self-efficacy. Currently, self-efficacy has only been researched regarding counselors and counselors-in-training. The purpose of this study, therefore, is to develop a scale that measures psychotherapy supervisor self-efficacy—the Psychotherapy Supervisor Self-Efficacy Scale (PSS-ES).
Specifically, this study addressed eight research hypotheses. Factor structure and internal consistency of the PSS-ES were evaluated. Group differences in PSS-ES scores regarding age and years of supervisor experience were also examined. Additionally, convergent and divergent validity were assessed through comparisons of PSS-ES scores and scales related to counselor self-efficacy (CSES), supervisory style (SSI), supervisor working alliance (SWAI), and optimism (LOT-R). The results of this study provide evidence that the PSS-ES is a valid and reliable scale measuring one factor— psychotherapy supervisor self-efficacy
The trophic dynamics of summer flounder (Paralichthys dentatus) in Chesapeake Bay
Data on the trophic dynamics of fishes are needed for
management of ecosystems such as Chesapeake Bay. Summer flounder (Paralichthys dentatus) are an abundant seasonal resident of the bay and have the potential to impact foodweb
dynamics. Analyses of diet data for late juvenile and adult summer flounder collected from 2002−2006 in Chesapeake Bay were conducted to characterize the role of this flatfish
in this estuary and to contribute to our understanding of summer flounder trophic dynamics throughout its range. Despite the diversity of prey, nearly half of the diet comprised mysid shrimp (Neomysis spp.) and bay anchovy (Anchoa mitchilli). Ontogenetic differences in diet and
an increase in diet diversity with increasing fish size were documented. Temporal (inter- and intra-annual)
changes were also detected, as well as trends in diet reflecting peaks in abundance and diversity of prey. The
preponderance of fishes in the diet of summer flounder indicates that this species is an important piscivorous
predator in Chesapeake Bay
- …