Sub-Riemannian Geodesics in the Octonionic H-type Group

Author(s):  
Christian Autenried ◽  
Mauricio Godoy Molina
Keyword(s):  
2016 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Hendri Marhadi ◽  
Erlisnawati '

Problem in this research was students achievement still low with average value 64,13. The purpose of this research was to improve the students’ achievement of in Management Class with the implementation of cooperative learning model type group investigation. This research was an classroom action research with two cycles in third semester 2014/2015. After implementation of cooperative learning model type group investigation, students’ achievement average on UH I with average 70,28 improved 9,6%. Students’ achievement on UH II was average 78,15 that improved 21,9%. Teacher’s activities with the implementation of cooperative learning model type group investigation in first meeting of first cycle was 62,5& (good category), and second meeting 78% (good category) in second meeting that improved 12,5 point. At second cycle, teacher’s activities in first meeting was 87,5% (verygood category) that improved 9,38 point from second meeting of first cycle. In second meeting was 93,8% (verygood category) which improved 6,3 point. Students’ activities in first meeting of first cycle was 65,6% (good category), and meeting second 75% (good category) in second meeting that improved 9,4 point. At second cycle, students’ activities in first meeting was 81% (very good category) that improved 6 point from second meeting of first cycle. Second meeting cycle second 90,6% (verygood category) in second meeting, which improved 9,6 point. Implementation of cooperative learning model type group investigation can improved students’ achievement in management class.Keywords: cooperatif group investigation, students achievement


Author(s):  
Seung Wan Hong ◽  
Tae Won Kim ◽  
Jae Hun Kim

Abstract Physicians and nurses stand with their back towards the C-arm fluoroscope when using the computer, taking things out of closets and preparing drugs for injection or instruments for intervention. This study was conducted to investigate the relationship between the type of lead apron and radiation exposure to the backs of physicians and nurses while using C-arm fluoroscopy. We compared radiation exposure to the back in the three groups: no lead apron (group C), front coverage type (group F) and wrap-around type (group W). The other wrap-around type apron was put on the bed instead of on a patient. We ran C-arm fluoroscopy 40 times for each measurement. We collected the air kerma (AK), exposure time (ET) and effective dose (ED) of the bedside table, upper part and lower part of apron. We measured these variables 30 times for each location. In group F, ED of the upper part was the highest (p < 0.001). ED of the lower part in group C and F was higher than that in group W (p = 0.012). The radiation exposure with a front coverage type apron is higher than that of the wrap-around type and even no apron at the neck or thyroid. For reducing radiation exposure to the back of physician or nurse, the wrap-around type apron is recommended. This type of apron can reduce radiation to the back when the physician turns away from the patient or C-arm fluoroscopy.


Author(s):  
Salvatore Impemba ◽  
Giuseppina Roviello ◽  
Stefano Milione ◽  
Carmine Capacchione

2016 ◽  
Vol 6 (2) ◽  
pp. 374-381 ◽  
Author(s):  
Yoshitaka Ouchi ◽  
Mari Kasai ◽  
Kei Nakamura ◽  
Masahiro Nakatsuka ◽  
Kenichi Meguro

Background/Aims: We investigated quantitative/qualitative changes of instrumental activities of daily living (IADL) in people with a Clinical Dementia Rating (CDR) of 0.5. Methods: IADLs were evaluated in older residents: CDR of 0 (healthy) and CDR 0.5 (questionable/very mild dementia). The subjects with CDR 0.5 were divided into 2 types: the very mild Alzheimer's disease (vmAD) type and the other type including very mild subcortical vascular dementia. IADLs were evaluated quantitatively using the Lawton and the original qualitative IADL scales. Results: CDR 0.5/vmAD type subjects had impairment of only one Lawton item (Shopping) compared to CDR 0 subjects. However, the CDR 0.5/vmAD type group and the CDR 0.5/other type group showed impairment of 3 items in the qualitative assessment (Shopping, Food preparation, and Mode of transportation). Conclusion: We suggest using both quantitative/qualitative IADL scales for assessing older adults with very mild dementia.


GANEC SWARA ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 165
Author(s):  
NI LUH SRI MURNIATI

This Classroom Action Research (CAR) was conducted at SDN 20 Cakranegara with the aim of increasing the value of students' skills, especially in the theme material 3 Objects around me through the use of a cooperative learning approach Type Group Investigation (GI).     The type of research used is Classroom Action Research which consists of planning, implementation, observation, and reflection. The subjects of this study were 44 grade students of SDN 20 Cakranegara. PTK is carried out in two cycles. Cycle I consists of 3 meetings and cycle II consists of 2 meetings. The action in this study was to use a cooperative learning model type Group Investigation (GI). The value of student skills is obtained during the learning process in the form of performance appraisal at each meeting. Furthermore, the collected data were analyzed descriptively quantitatively.     From the results of data analysis, it was found that the achievement of the skills of students in the first cycle was as follows; of 44 students as many as 34 students (77.27%) who obtained a value of ≥70 and as many as 10 people (20.73%) had not reached the value of ≥70. The average skill score of students in cycle I is 70.80. Cycle II of 44 students as many as 40 students (90.91%) who obtained a value of ≥70 and as many as 4 people (9.09%) had not reached the value of ≥70. The average skill score of the second cycle students is 86.70. The determined performance indicator is 85% of students obtain a skill score of ≥70 with the Good category. Thus it can be concluded that the cooperative learning model of the Group Investigation type can increase the value of the skills of third grade students of SDN 20 Cakranegara.


2018 ◽  
Vol 46 (9) ◽  
pp. 2096-2102 ◽  
Author(s):  
Yoshiharu Shimozono ◽  
Johanna C.E. Donders ◽  
Youichi Yasui ◽  
Eoghan T. Hurley ◽  
Timothy W. Deyer ◽  
...  

Background: Uncontained-type osteochondral lesions of the talus (OLTs) have been shown to have inferior clinical outcomes after treatment with bone marrow stimulation. While autologous osteochondral transplantation (AOT) is indicated for larger lesions, no study has reported on the prognostic significance of the containment of OLTs treated with the AOT procedure. Purpose: To clarify the effect of the containment of OLTs on clinical and radiological outcomes in patients who underwent AOT for OLTs. Study Design: Case control study; Level of evidence, 3. Methods: A retrospective cohort study comparing patients with contained-type and uncontained-type OLTs was undertaken to include all patients who underwent AOT for the treatment of OLTs between 2006 and 2014. Analyses were performed by grouping the patients according to the containment type. Clinical outcomes were evaluated using the Foot and Ankle Outcome Score (FAOS) and the 12-Item Short Form Health Survey (SF-12) preoperatively and at final follow-up. Magnetic resonance imaging (MRI) at 2 years’ follow-up was evaluated with the modified magnetic resonance observation of cartilage repair tissue (MOCART) score. Multivariate regression models were used to evaluate factors affecting postoperative FAOS, SF-12, and MOCART scores. Results: Ninety-four patients were included: 31 patients with a contained-type OLT and 63 patients with an uncontained-type OLT. The median patient age was 34 years (interquartile range [IQR], 28-48 years) in the contained-type group and 36 years (IQR, 27-46 years) in the uncontained-type group. The median follow-up time was 45 months (IQR, 38-63 months) in the contained-type group and 52 months (IQR, 40-66 months) in the uncontained-type group. The median FAOS and SF-12 scores improved significantly after surgery in both contained-type and uncontained-type lesions ( P < .001). The median postoperative FAOS score of patients with contained-type OLTs was higher than that of patients with uncontained-type OLTs (91.7 vs 85.0, respectively; P = .009), but no significant differences were found between the contained-type and uncontained-type groups for postoperative SF-12 and MOCART scores. The multivariate regression models showed that patients with contained-type OLTs had an approximately 10-point better score on the FAOS compared with patients with uncontained-type OLTs ( P = .006). There was a nonsignificant trend for the rate of cystic occurrence in uncontained-type OLTs to be higher than that of contained-type OLTs (55.6% vs 38.7%, respectively; P = .125). Conclusion: Patients with contained-type OLTs experienced better clinical outcomes than those with uncontained-type OLTs after AOT for the treatment of OLTs. However, the AOT procedure still provided good clinical and MRI outcomes in both contained-type and uncontained-type OLTs at midterm follow-up.


Author(s):  
Jörg-Uwe Löbus

We consider certain Boltzmann type equations on a bounded physical and a bounded velocity space under the presence of both reflective as well as diffusive boundary conditions. We introduce conditions on the shape of the physical space and on the relation between the reflective and the diffusive part in the boundary conditions such that the associated Knudsen type semigroup can be extended to time [Formula: see text]. Furthermore, we provide conditions under which there exists a unique global solution to a Boltzmann type equation for time [Formula: see text] or for time [Formula: see text] for some [Formula: see text] which is independent of the initial value at time 0. Depending on the collision kernel, [Formula: see text] can be arbitrarily small.


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