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Search Results: 1 - 10 of 144120 matches for " B Kies "
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Acute hospitalisation needs of adults admitted to public facilities in the Cape Town Metro district
E de Vries, P Raubenheimer, B Kies, VC Burch
South African Medical Journal , 2011,
Abstract: Introduction. Public health care delivery in South Africa aims to provide equitable access at the most appropriate level of care. We studied to what extent the acute health care needs of adults admitted to public hospitals in the Cape Town Metropole were being appropriately met. Methods. A retrospective study was conducted of the hospital records of adults admitted to medical beds in public hospitals in Cape Town between August and November 2008. Intensive care unit patients were not included. Results. Of 802 beds in use, the estimated occupancy was at least 95%. The average time elapsed since admission was 7.9 days; 94.3% of medical admissions were acute; 45% were severely to critically ill on admission; and co-morbid disease was present in 78.1%. Of all admissions, 31.9% were HIV-positive, and 17% had active tuberculosis. At least 396 (51.6%) patients were deemed to have required specialist or subspecialist consultation to expedite appropriate care; 386 (50.3%) accessed the appropriate level of medical care required; 339 (44.2%) accessed a more sophisticated level of care than required; and 42 (5.5%) did not access an adequate level of care. CT scan and ultrasound accounted for 59% of all restricted tests done. Conclusions. Our findings support the plan to provide more primary care hospital facilities in the metropolitan area. Most patients needing specialised care are accessing such care, and most patients accessing a higher level of care than needed can be addressed by ensuring that they first access primary care and are referred according to protocols.
Repliek comments on "a view of evolution by a Christian biologist' 1
J. D. Kies
Koers : Bulletin for Christian Scholarship , 1986, DOI: 10.4102/koers.v51i4.949
Abstract: Die Ou en Nuwe Testamente van die Bybel vorm 'n eenheid, en Christene wat uit laasgenoemde lewe, moet die uitsprake van die N T oor die OT aanvaar. Christus se eie woorde was dat man en vrou in die begin geskape is. Dit laat geen ruimte vir 'n lang evolusionére geskiedenis nie. Bowendien het Jesus gesé dat as mens nie glo wat Moses geskryf het nie, jy ook nie Sy woorde kan glo nie (Joh. 5:46,47).
H.E. Kies
Nieuwe West-Indische Gids , 1948,
Medical Image Segmentation Using Enhanced Hoshen-Kopelman Algorithm
K. Kies,N. Benamrane
Journal of Applied Sciences , 2008,
Abstract: This research present a method of 2D and 3D segmentation based on the Enhanced Hoshen-Kopelman algorithm and its extension to non-lattice structure. The main feature of this method is to combine a merging strategy of a region growing algorithm with the multiple labeling technique of the EHK algorithm for regular and non-regular lattice. An efficient reconstruction algorithm is then applied to the set of edge points for the obtained segmented regions. The latest uses 3D Delaunay weighted triangulation. The combination of these already known algorithms makes the proposed approach very fast, efficient and appropriate to volumetric segmentation and particularly the anatomical structures in MRI and CTScan images.
Seasonal Evolution of the Rhizosphere Effect on Major and Trace Elements in Soil Solutions of Norway Spruce (Picea abies Karst) and Beech (Fagus sylvatica) in an Acidic Forest Soil  [PDF]
Christophe Calvaruso, Christelle Collignon, Antoine Kies, Marie-Pierre Turpault
Open Journal of Soil Science (OJSS) , 2014, DOI: 10.4236/ojss.2014.49034
Abstract: In low-nutrient ecosystems such as forests developed on acidic soil, the main limiting factor for plant growth is the availability of soil nutrients. The aim of this study was to investigate in a temperate forest: 1) the influence of the rhizosphere processes on the availability of nutrients and trace elements during one year period and 2) the seasonal evolution of this rhizosphere effect. Bulk soil and rhizosphere were collected in organo-mineral and mineral horizons of an acidic soil during autumn, winter, and spring under Norway spruce (Picea abies Karst) and beech (Fagus sylvatica). Soil solutions were extracted by soil centrifugation. Rhizosphere solutions were enriched in K, and in Ca, Mg, and Na (principally in spring) compared to those of the bulk soil. Our study reveals seasonal variations of the rhizosphere effect for Ca, Mg, and Na under both species, i.e., higher enrichment of the rhizosphere solution in spring as compared with that in autumn and winter. An
MicroRNA Profiling of Salivary Adenoid Cystic Carcinoma: Association of miR-17-92 Upregulation with Poor Outcome
Yoshitsugu Mitani, Dianna B. Roberts, Hanadi Fatani, Randal S. Weber, Merrill S. Kies, Scott M. Lippman, Adel K. El-Naggar
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0066778
Abstract: Background Salivary adenoid cystic carcinoma (ACC) is a rare relentlessly progressive malignant tumor. The molecular events associated with ACC tumorigenesis are poorly understood. Variable microRNAs (miRNA) have been correlated with tumorigenesis of several solid tumors but not in ACC. To investigate the association of miRNAs with the development and/or progression of ACC, we performed a comparative analysis of primary ACC specimens and matched normal samples and a pooled salivary gland standard and correlated the results with clinicopathologic factors and validated selected miRNAs in a separate set of 30 tumors. Methods MiRNA array platform was used for the identification of target miRNAs and the data was subjected to informatics and statistical interrelations. The results were also collected with the MYB-NFIB fusion status and the clinicopathologic features. Results Differentially dysregulated miRNAs in ACC were characterized in comparison to normal expression. No significant differences in miRNA expression were found between the MYB-NFIB fusion positive and -negative ACCs. Of the highly dysregulated miRNA in ACC, overexpression of the miR-17 and miR-20a were significantly associated with poor outcome in the screening and validation sets. Conclusion Our study indicates that the upregulation of miR-17-92 may play a role in the biology of ACC and could be potentially targeted in future therapeutic studies.
Medical students who decompress during the M-1 year outperform those who fail and repeat it: A study of M-1 students at the University of Illinois College of Medicine at Urbana-Champaign 1988–2000
Susan M Kies, Gregory G Freund
BMC Medical Education , 2005, DOI: 10.1186/1472-6920-5-18
Abstract: The authors reviewed the performance of M-1 students in the Decompressed Program and compared their outcomes to M-1 students who failed and fully repeated the M-1 year. To compare the groups upon admission, t-Tests comparing the Cognitive Index of students and MCAT scores from both groups were performed. Performance of the two groups after matriculation was also analyzed.Decompressed students were 2.1 times more likely to graduate. Decompressed students were 2.5 times more likely to pass USMLE Step 1 on the first attempt than the repeat students. In addition, 46% of those in the decompressed group completed the program in five years compared to 18% of the repeat group.Medical students who decompress their M-1 year prior to M-1 year failure outperform those who fail their first year and then repeat it. These findings indicate the need for careful monitoring of M-1 student performance and early intervention and counseling of struggling students.All medical schools are faced with poor performing M-1 students. The challenge is to encourage these students to take remedial programs that address their academic problems and assist them in becoming high performing physicians. During Academic Year 2001–2002, the LCME reported that 47 schools employed an Extended Time or Decompressed Program to assist poor performers [1]. Despite this widespread use of decompressed programs, little outcome information is reported in the literature.In reviewing the literature, few outcome studies regarding remedial programs were found. Most articles discuss predictive measures of academic success in medical school, including both cognitive and non-cognitive variables that can assist admission committees to choose those students most likely to achieve well in medical school, while at the same time, steering committees away from admitting students likely to fail. Study results have provided medical school admission committees with data to apply to their admission policies and procedures [2-11]. P
Influence of variable stress on underground radon concentrations
A. Kies,F. Massen,Z. Tosheva
Geofísica internacional , 2002,
Abstract: Stresses applied to rocks of the Earth’s crust cause local deformation of the crust. In order to monitor a radon signal due to variable pressures and rock stresses we use a natural laboratory under a reservoir of the Vianden (Luxembourg) pumping storage power plant. Depending on energy demands, the artificial reservoirs at the top of a hill experience daily variations in water levels of up to 16 meters, thus exerting variable pressures on the underlying rocks.Radon concentrations are continuously measured in boreholes drilled into the bedrock under water reservoir. We observe some very strong variations in transient radon concentrations induced by variations of water level. The reservoir consists of two independent reservoirs that were emptied individually for some period of time. The observed radon pattern depends on the location of the boreholes under the reservoir and is different if both basins are working together, or if one of the reservoirs is empty. The observed patterns can be accounted for by variable pathways of fluids, fluid overpressure and a dynamic flow in cracks.
3D Medical Image Segmentation and Surface Modeling Using the Power Crust
K. Kies,N. Benamrane,A. Benyettou
Information Technology Journal , 2005,
Abstract: we present a method of 3D segmentation based on region-growing technique were extracted region surface edges are modelled using a 3D Delaunay Triangulation refined by using the power crust algorithm. The latest can be performed either on a small subset randomly chosen or on all edge points. This proposed fast and very promising approach makes it possible to adapt it to the segmentation of anatomical structures in MRI and CTScan images.
Gender plays no role in student ability to perform on computer-based examinations
Susan M Kies, Benjamin D Williams, Gregory G Freund
BMC Medical Education , 2006, DOI: 10.1186/1472-6920-6-57
Abstract: This study involved first year medical students at the University of Illinois at Urbana-Champaign over three Academic Years 2002–03/2003–04 and 2003–05. Comparisons of student performance by overall class and gender were made. Specific comparisons within courses that utilized both the paper-and-pencil and computer formats were analyzed.Overall performance scores for students among the various Academic Years revealed no differences between exams given in the traditional pen-and-paper and computer formats. Further, when we looked specifically for gender differences in performance between these two testing formats, we found none.The format for examinations in the courses analyzed does not affect student performance. We find no evidence for gender differences in performance on exams on pen-and-paper or computer-based exams.Delivery of examinations via computer (on-line testing) is becoming more and more prevalent in medical education. Since 1998, students have taken the United States Medical Licensing Examination (USMLE) Step 1, Step 2 and Step 3 on-line. In the very near future, the Medical College Admissions Test (MCAT) will be administered on-line only. The National Board of Medical Educators is now developing on-line Subject Examinations. Current thinking is that on-line testing is the same as paper-and-pencil administration [1-5].Given the sweeping changes that are now occurring in medical school testing methods, it is important to understand the potential performance differences in students taking paper-and-pencil examinations compared to on-line examinations and to implement on-line examinations so that students have the best opportunity to show their level of proficiency [6,7].This study involves first year medical students at the University of Illinois at Urbana-Champaign. During Academic Year 2004–05 the biochemistry and neuroscience courses each began administering one of their major examinations via computer. The purpose of the study was to detect any differ
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