1,165 research outputs found
On the Kodaira dimension of the moduli space of hyperelliptic curves with marked points
It is known that the moduli space of genus g
stable hyperelliptic curves with marked points is uniruled for . In this paper we consider the complementary case and show that
has non-negative Kodaira dimension for and is of general type for . Important parts of our proof
are the calculation of the canonical divisor and establishing that the
singularities of do not establish adjunction
conditions
Correlation between therapy response assessment using FDG PET/CT and histopathologic tumor regression grade in hepatic metastasis of colorectal carcinoma after neoadjuvant therapy
Purpose: To evaluate the correlation between change in FDG uptake before and after chemotherapy in hepatic metastases of colorectal carcinoma (HCRC) and a histopathologic tumor regression grade (TRG). Methods: In patients with HCRC, PET/CT data prior to hepatic surgery were retrospectively analyzed under an IRB waiver. The maximum standard uptake value (SUVmax) was measured before and after chemotherapy. The relative change of FDG activity in the identified lesions was calculated (dSUV). Histopathological specimens of resected metastases were graded on a 5-score TRG scale. A TRG of 1-3 was rated as a responding to therapy, whereas TRG 4-5 were regarded as non-responding lesions. Results: 31 lesions were identified in 23 patients. Mean SUVmax before and after therapy was 6.9±3.7 and 3.5±1.8, respectively. The area under the receiver operator characteristic curve revealed a conclusive correlation between TRG and dSUV (AUC 0.773; 95% confidence interval 0.599-0.946) with a cut off at 41% decrease in FDG activity yielding a sensitivity and specificity of 72 and 75%, respectively. Conclusion: A relative change in FDG activity (dSUV) of more than 41% decrease correlated significantly with histopathological tumor regression and might be a prognostic tool for response to chemotherapy in HCR
Wavelet analyses of electromyographic signals derived from lower extremity muscles while walking or running: A systematic review.
Surface electromyography is often used to assess muscle activity and muscle function. A
wavelet approach provides information about the intensity of muscle activity and motor unit
recruitment strategies at every time point of the gait cycle. The aim was to review papers
that employed wavelet analyses to investigate electromyograms of lower extremity muscles
during walking and running. Eleven databases were searched up until June 1st 2017. The
composition was based on the PICO model and the PRISMA checklist. First author, year,
subject characteristics, intervention, outcome measures & variables, results and wavelet
specification were extracted. Eighteen studies included the use of wavelets to investigate
electromyograms of lower extremity muscles. Three main topics were discussed: 1.) The
capability of the method to correctly assign participants to a specific group (recognition rate)
varied between 68.4%-100%. 2.) Patients with ankle osteoarthritis or total knee arthroplasty
presented a delayed muscle activation in the early stance phase but a prolonged activation
in mid stance. 3.) Atrophic muscles did not contain type II muscle fiber components but
more energy in their lower frequencies. The simultaneous information of time, frequency
and intensity is of high clinical relevance because it offers valuable information about preand
reflex activation behavior on different walking and running speeds as well as spectral
changes towards high or low frequencies at every time point of the gait cycle
Interprofessional education: a necessity in Alzheimer’s dementia care—a pilot study
Introduction: Interprofessional collaboration is seen as an indispensable
prerequisite for high-quality health services and patient care, especially for
complex diseases such as dementia. Thus, the current project aimed to extend
interprofessional and competency-based education in the field of dementia care
to the previously understudied therapy professions of nutrition, speech-language
pathology, and physiotherapy.
Methods: A three-day workshop was designed to provide specific learning
objectives related to patient-centered dementia care, as well as competences
for interprofessional collaboration. Teaching and learning approaches included
case-based learning in simulated interprofessional case-conferences and peerteaching. A total of 42 students (n  =  20 nutrition therapy and counseling, n  =  8
speech-language pathology, n  =  14 physiotherapy), ranging from first to seventh
semester, finished the whole workshop and were considered in data analysis.
Changes in self-perceived attitudes toward interprofessional collaboration and
education were measured by the German version of the UWE-IP. An in-house
questionnaire was developed to evaluate knowledge and skills in the field of
dementia, dementia management and interprofessional collaboration.
Results: Participation in the workshop led to significant improvements in the total
scores of the UWE-IP-D and the in-house questionnaire, as well as their respective
subscales. Moderate to large effect sizes were achieved. All professions improved
significantly in both questionnaires with large effect sizes. Significant differences
between professions were found in the UWE-IP-D total score between students of
speech-language pathology and physiotherapy in the posttest. Students of nutrition
therapy and counseling revealed a significant lower level of self-perceived knowledge
and skills in the in-house questionnaire pre- and post-testing.
Discussion: The pilot-study confirms the effectiveness of interprofessional
education to promote generic and interprofessional dementia care competencies
and to develop positive attitudes toward interprofessional learning and
collaboration in the therapy professions, thus increasing professional diversity
in interprofessional education research. Differences between professions were
confounded by heterogenous semester numbers and participation conditions.
To achieve a curricular implementation, interprofessional education should
be expanded to include a larger group of participants belonging to different
professions, start early in the study program, and be evaluated over the long term
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