Highly Parameterized K-means Clustering on FPGAs: Comparative Results with GPPs and GPUs

2011 ◽  
Author(s):  
Hanaa M. Hussain ◽  
Khaled Benkrid ◽  
Ahmet T. Erdogan ◽  
Huseyin Seker
Keyword(s):  
Comparative Results

Untersuchungen zur Quantifizierung der Änderung der Skelettmuskeldurchblutung nach Gefäßrevaskularisationen mit einem 99mTechnetiummarkierten Tracer

1990 ◽  
Vol 29 (05) ◽  
pp. 215-220 ◽  
Author(s):  
R. Benning ◽  
K. Nagel ◽  
M. Jugenheimer ◽  
S. Fischer ◽  
S. Worthmann ◽  
...  
Keyword(s):  
Transluminal Angioplasty ◽  
Lower Limbs ◽  
Surgical Patients ◽  
Treadmill Test ◽  
Negative Results ◽  
Clinical Observations ◽  
Before And After ◽  
Comparative Results ◽  
First Time ◽  
Percutaneous Transluminal

A new 99mTc-labelled tracer (99mTc-Sestanriibi) was used for the first time to demonstrate the perfusion of the skeletal muscle. In 16 patients with obstructive atherosclerosis of the lower limbs the change of perfusion of thigh and lower leg was studied with SPECT before and after vascular surgery (n = 11) or percutaneous transluminal angioplasty (n = 5). Comparative results of scintigraphic measurements and clinical observations (ancle-arm pressure, treadmill test) in 10 surgical patients (14 operated legs) showed correct positive or negative results in 86% (12/14).

Opportunistic Colorectal Cancer Screening using Colonoscopy. Comparative Results between two Historical Cohorts in Bucharest, Romania

2015 ◽  
Vol 24 (2) ◽  
pp. 171-176 ◽  
Author(s):  
Elena Mirela Ionescu ◽  
Tudor Nicolaie ◽  
Serban Ion Gologan ◽  
Ana Mocanu ◽  
Cristina Ditescu ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Screening Program ◽  
Advanced Adenoma ◽  
Detection Rates ◽  
Incidence And Mortality ◽  
Organized Screening Program ◽  
History Of ◽  
Comparative Results ◽  
Asymptomatic Individuals ◽  
Second Period

Background & Aims: Even though Romania has one of the highest incidence and mortality in colorectal cancer (CRC) in Europe, there is currently no organized screening program. We aimed to assess the results of our opportunistic CRC screening using colonoscopy.Methods: A single center retrospective study to include all opportunistic screening colonoscopies performed in two 18 month periods (2007-2008 and 2012-2013) was designed. All asymptomatic individuals without a personal or family history of adenoma or CRC and with complete colonoscopy performed in these two time periods were included.Results: We included 1,807 individuals, 882 in the first period, 925 in the second period. There were 389 individuals aged below 50, 1,351 between 50 and 75 and 67 older than 75 years. There were 956 women (52.9%), with a mean age of 58.5 (median 59, range 23-97). The detection rates were 12.6% for adenomas (6.1% for advanced adenoma) and 3.4% for adenocarcinoma. Adenoma incidence (4.9% in subjects under 50, 14.7% in those aged 50 to 75, and 16.4% in those older than 75, p<0.0001) and size (6.3mm in subjects younger than 50, 9.2mm in those 50 to 75 and 10.8mm in those older than 75, p=0.015) significantly increased with age. Adenoma incidence increased in the second period (14.8% vs. 10.3%, p=0.005), while adenoma size decreased in the second period (8.4mm vs. 10mm, p=0.006). There were no procedure related complications.Conclusions: The neoplasia detection rate was 16% (12.6% adenoma, 3.4% adenocarcinoma). Adenoma incidence and size increased with age in both cohorts. In the second screening period significantly more and smaller adenomas were detected.

Students’ Speaking Skill in English Immersion School

2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Mohammad Fadil ◽  
Sumardi Sumardi ◽  
Ngadiso Ngadiso
Keyword(s):  
English Teachers ◽  
Program Improvement ◽  
Average Score ◽  
Factors Affecting ◽  
English Immersion ◽  
Speaking Skill ◽  
English Speaking ◽  
Comparative Results ◽  
Academic Year ◽  
Speaking Skills

This research aims to describe: (1) students' English speaking skill in English immersion school; (2) students’ strengths and weaknesses in speaking skill in English immersion school; (3) factors affecting students' speaking skill in English immersion school. The research was designed as a case study, conducted at a school applying English immersion in Bondowoso, East Java, Indonesia in Academic Year 2017-2018. The research used purposive sampling. Data were collecated by interview, questionnairre, observation, and document analysis. The informants were grade 2 students, English teachers, and the school founder. The analysis found that: (1) on the scale of 1-5 (1=very bad, 2=bad, 3=fair, 4=good, 5=very good), students’ English speaking skills were at levels of very good (2.22%), good (6.67%), fair (37.78%), bad (44.44%), and very bad (8.89%); (2) students’ strengths in English speaking skills were related to vocabulary with average score of 2.7, and the weaknesses dealt with fluency with average score of 2.25; (3) factors that were assumed to affect students’ English speaking skills were environment, local accent, vocabulary mastery, English use, preference, and habits. It is recommended that all parties involved in the English immersion program evaluate the running of the program and the content of the program to provide learning outputs through English immersion. Commitment to using English should be strengthened, especially in English Week program. Improvement on English teachers’ is needed by involving them in trainings. Finally, similar research at non-English immersion school is necessary to ensure the comparative results gained from both types of school.

Computational and experimental studies of the strength of full-scale samples of pipes with defects "metal loss" and "dent with groove"

2020 ◽  
Vol 10 (3) ◽  
pp. 226-233
Author(s):  
Dmitry A. Neganov ◽  
◽  
Victor M. Varshitsky ◽  
Andrey A. Belkin ◽  
◽  
...  
Keyword(s):  
Internal Pressure ◽  
Experimental Studies ◽  
Full Scale ◽  
The Other ◽  
Metal Loss ◽  
Calculation Methods ◽  
Reliable Operation ◽  
Sufficient Stability ◽  
Comparative Results ◽  
The Moment

The article contains the comparative results of the experimental and calculated research of the strength of a pipeline with such defects as “metal loss” and “dent with groove”. Two coils with diameter of 820 mm and the thickness of 9 mm of 19G steel were used for full-scale pipe sample production. One of the coils was intentionally damaged by machining, which resulted in “metal loss” defect, the other one was dented (by press machine) and got groove mark (by chisel). The testing of pipe samples was performed by applying static internal pressure to the moment of collapse. The calculation of deterioration pressure was carried out with the use of national and foreign methodical approaches. The calculated values of collapsing pressure for the pipe with loss of metal mainly coincided with the calculation experiment results based on Russian method and ASME B31G. In case of pipe with dent and groove the calculated value of collapsing pressure demonstrated greater coincidence with Russian method and to a lesser extent with API 579/ASME FFS-1. In whole, all calculation methods demonstrate sufficient stability of results, which provides reliable operation of pipelines with defects.

SYSTEM APPROACH TO ANALYSIS OF THE REASONS FOR METHANE EXPLOSIONS AND COAL DUST ON RUSSIAN MINES

2020 ◽  
Author(s):  
Виктория Владимировна Смирнякова ◽  
Валерий Витальевич Смирняков ◽  
Федор Александрович Орлов
Keyword(s):  
Statistical Methods ◽  
System Approach ◽  
Coal Dust ◽  
Technical Analysis ◽  
Analysis Methods ◽  
Dust Explosions ◽  
Comparative Results

Авторами приведены статистические данные об авариях, связанных со взрывами газа и пыли на горных предприятиях России. Показаны сравнительные результаты оценки причин аварийных ситуаций, проведенных статистическими методами и методами технического анализа. The authors provide statistics on accidents associated with gas and dust explosions at mining enterprises in Russia. Comparative results of the assessment of the emergencies causes conducted by statistical methods and technical analysis methods are shown.

Spatial Interpolators for Intra-Frame Resampling of SAR Videos: A Comparative Study Using Real-Time HD, Medical and Radar Data

2020 ◽  
Vol 15 (2) ◽  
pp. 144-196 ◽  
Author(s):  
Mohammad R. Khosravi ◽  
Sadegh Samadi ◽  
Reza Mohseni
Keyword(s):  
Computational Complexity ◽  
Real Time ◽  
Video Compression ◽  
Nearest Neighbor ◽  
Radar Data ◽  
Edge Preservation ◽  
Edge Information ◽  
Video Codecs ◽  
Comparative Results ◽  
Interesting Area

Background: Real-time video coding is a very interesting area of research with extensive applications into remote sensing and medical imaging. Many research works and multimedia standards for this purpose have been developed. Some processing ideas in the area are focused on second-step (additional) compression of videos coded by existing standards like MPEG 4.14. Materials and Methods: In this article, an evaluation of some techniques with different complexity orders for video compression problem is performed. All compared techniques are based on interpolation algorithms in spatial domain. In details, the acquired data is according to four different interpolators in terms of computational complexity including fixed weights quartered interpolation (FWQI) technique, Nearest Neighbor (NN), Bi-Linear (BL) and Cubic Cnvolution (CC) interpolators. They are used for the compression of some HD color videos in real-time applications, real frames of video synthetic aperture radar (video SAR or ViSAR) and a high resolution medical sample. Results: Comparative results are also described for three different metrics including two reference- based Quality Assessment (QA) measures and an edge preservation factor to achieve a general perception of various dimensions of the mentioned problem. Conclusion: Comparisons show that there is a decidable trade-off among video codecs in terms of more similarity to a reference, preserving high frequency edge information and having low computational complexity.

Cerebellopontine Angle Epidermoids: Comparative Results of Microscopic and Endoscopic Excision Using the Retromastoid Approach”

2021 ◽  
Author(s):  
Suyash Singh ◽  
Kuntal Kanti Das ◽  
Krishna Kumar ◽  
Kamlesh Rangari ◽  
Priyadarshi Dikshit ◽  
...  
Keyword(s):  
Hospital Stay ◽  
Cranial Nerve ◽  
Cerebellopontine Angle ◽  
Surgical Excision ◽  
Csf Leak ◽  
Tumor Extension ◽  
Endoscopic Excision ◽  
Endoscopic Assistance ◽  
Comparative Results ◽  
Neurovascular Structures

Abstract Background Densely packed neurovascular structures, often times inseparable capsular adhesions and sometimes a multicompartmental tumor extension, make surgical excision of cerebellopontine angle epidermoids (CPEs) a challenging task. A simultaneous or an exclusive endoscopic visualization has added a new dimension to the classical microscopic approaches to these tumors recently. Method Eighty-six patients (age: 31.6 ± 11.7 years, M:F = 1:1) were included. Nineteen patients (22.1%) had a multicompartmental tumor. Tumor extension was classified into five subtypes. Sixty-two patients underwent a pure microscopic approach (72%) out of which 10 patients (16%) underwent an endoscope-assisted surgery (11.6%) and 24 patients (28%) underwent an endoscope-controlled excision. Surgical outcomes were retrospectively analyzed. Results Headache (53.4%), hearing loss (46.5%), and trigeminal neuralgia (41.8%) were the leading symptoms. Interestingly, 21% of the patients had at least one preexisting cranial nerve deficit. Endoscopic assistance helped in removing an unseen tumor lobule in 3 of 10 patients (30%). Pure endoscopic approach significantly reduced the hospital stay from 9.2 to 7.3 days (p = 0.012), and had a statistically insignificant yet a clearly noticeable lesser incidence of subtotal tumor excision (0 vs. 10%, p = 0.18) with comparable cranial nerve deficits but with a higher postoperative cerebrospinal fluid (CSF) leak rate (29% vs. 4.8%, p = 0.004). Conclusion Endoscope assistance in CPE surgery is a useful addition to conventional microscopic retromastoid approach. Pure endoscopic excision in CPE is feasible, associated with a lesser duration of hospital stay, better extent of excision in selected cases, and it has a comparable cranial nerve morbidity profile albeit with a higher rate of CSF leak.

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