scholarly journals Qualitative strain elastography – strain ratio evaluation - an important tool in breast cancer diagnostic

2016 ◽  
Vol 18 (2) ◽  
pp. 195 ◽  
Author(s):  
Dana Stoian ◽  
Bogdan Timar ◽  
Marius Craina ◽  
Elena Bernad ◽  
Izabela Petre ◽  
...  
Keyword(s):  
Real Time ◽  
Strain Ratio ◽  
Final Diagnosis ◽  
Diagnostic Reliability ◽  
Qualitative And Quantitative ◽  
Biopsy Specimens ◽  
Malignant Breast ◽  
Doppler Evaluation ◽  
Better Than

Aims: To assess the quality of real time elastography as a differential diagnosis tool for breast nodules and to compare it with standard ultrasonography. Material and methods: In this prospective study we enrolled 174 patients in which 174 dominant breast nodules were considered for the final diagnosis. The results of ultrasonography and real time elastography, both qualitative and quantitative, were compared with pathology findings from the biopsy specimens. Results: Pathology examinations determined 102 nodules were benign and 72 malignant. Qualitative elastography had a better diagnostic performance (82.4% sensitivity and 81.9% specificity) than ultrasonography plus Doppler evaluation (70.3% sensitivity and 73.5% specificity). Quantitative elastography, assessed using the fat-to-lesion ratio, was a good discriminant for malignancy (AUROC = 0.93, p < 0.001). Our results pointed to an optimal threshold for malignancy of > 4.88; by using this threshold, the diagnostic reliability of the fat-to-lesion ratio was better than both ultrasonography and qualitative elastography (86.5% sensitivity and 90.4% specificity). Conclusion: Real time elastography is superior to ultrasonography in diagnosing malignant breast nodules. The evaluation of nodules using a fat-to-lesion ratio was a better discriminant for malignancy than qualitative elastography. 

scholarly journals The Range Values for the Design Parameters of Nanoengineered Concrete Components. Characteristics, Properties, Amounts and Effects on the Concrete Behaviour

2013 ◽  
Vol 8-9 ◽  
pp. 277-284
Author(s):  
Olar Radu ◽  
Traian Onet
Keyword(s):  
Compressive Strength ◽  
Structural Material ◽  
Real Time ◽  
New Products ◽  
Structural Behavior ◽  
Design Parameters ◽  
Quality Requirements ◽  
Research Goal ◽  
Better Than

The nanometric scale researches results can be found, in present, in every industry domains, due to the effects of the new products, obtained on the basis of this researches. In the concrete industry, the research goal at this level is to obtain, finally, a material with new features, whose structural behavior to be considerably better than of the current one. Basically, it aims to achieve, using nanotechnologies, a new structural material for constructions, starting from the current concrete advantages (good compressive strength, durability, etc.), eliminating the disadvantages (low tensile resistance, cracks, etc.), and controlling, in the same time, the costs. Thus, in this paper are presented the required parameters in order to obtain this kind of material, by highlighting the nanocomponents characteristics and the quantities that are used to achieve the expected quality requirements. The real time influence of these nanocomponents on the quality of the studied material can be observed using a dedicated software, specially developed for this purpose.

PARALLEL REAL-TIME COMPUTATION OF NONLINEAR FEEDBACK FUNCTIONS

2003 ◽  
Vol 13 (01) ◽  
pp. 65-75 ◽  
Author(s):  
SELIM G. AKL
Keyword(s):  
Real Time ◽  
Parallel Computer ◽  
Nonlinear Feedback ◽  
Feedback Function ◽  
Parallel Solution ◽  
Computational Problem ◽  
Superlinear Speedup ◽  
Better Than ◽  
Surprising Observation

This paper focuses on the improvement in the quality of computation provided by parallelism. The problem of interest is that of computing the maximum of a nonlinear feedback function in a real-time environment. We show that the solution obtained in parallel is significantly, provably, and consistently better than a sequential one. It is important to note that our purpose is not to demonstrate merely that a parallel computer can obtain a solution to a computational problem that is of higher quality than one derived sequentially. The latter is an interesting (and often surprising) observation in its own right, but we wish to go further. It is shown here that the improvement in quality due to parallelism can be arbitrarily high. To be specific, the ratio of the parallel solution to the sequential one is typically superlinear in the number of processors used by the parallel computer. This result is akin to superlinear speedup—a phenomenon itself originally thought to be impossible.

Skype Traffic Identification Based on Trends-Aware Protocol Fingerprints

2014 ◽  
Vol 543-547 ◽  
pp. 2249-2254 ◽  
Author(s):  
Wei Wang ◽  
Dong Nian Cheng
Keyword(s):  
Real Time ◽  
Rapid Identification ◽  
Traffic Identification ◽  
Security Control ◽  
Network Quality ◽  
Encrypted Traffic ◽  
P2p Technology ◽  
Signaling Interactions ◽  
Better Than

The P2P technology consumes the largest proportion of network traffic and is usually encrypted, which is lack of supervision. Accurate and rapid identification of encrypted P2P traffic, represented by the famous Skype, is of great significance to improve the network quality of service and enhance security control. In this paper, a trends-aware protocol fingerprints model is proposed based on the statistical signatures of signaling interactions and content transfer phase of Skype. The proposed method can sense traffic trends by trends-aware weighting functions and identify Skype traffic with anomaly scores in real-time. Experimental results show that the precision and real-time performances of the proposed algorithm is better than several state-of-art encrypted traffic identification methods, such as the protocol fingerprints and C4.5 algorithm.

scholarly journals Differentiation of Transverse Sinus Thrombosis From Congenitally Atretic Transverse Sinus With TR-MRA：An Exploratory Study

2019 ◽  
Author(s):  
Dongdong Wang ◽  
Wenjie Cao ◽  
Yanan Xie ◽  
Yiping Lu ◽  
Xuanxuan Li ◽  
...  
Keyword(s):  
Gold Standard ◽  
Sinus Thrombosis ◽  
Final Diagnosis ◽  
Transverse Sinus ◽  
Time Resolved ◽  
Contrast Enhanced ◽  
Radiological Images ◽  
The Mean ◽  
Better Than

Abstract Background: We aimed to establish the value of Time-resolved contrast-enhanced magnetic resonance angiography (TR-MRA) in identifying thrombosis of transverse sinus(TS) in patients with a unilaterally absent TS signal on MRV. Methods: Forty-five patients who were suspected of TS thrombosis clinically with a unilaterally absent TS signal on phase contrast(PC) MRV, were evaluated with TR-MRA. Images obtained by each technique were assessed independently by two neuroradiologists for whether the absent signal was thrombosis or atretic TS. The final diagnosis given based on clinical data and all radiological images(including the asymmetry of the sigmoid notches and TR-MRA) by a consultant neurologist was set as the gold standard and then, the accuracy of radiological diagnosis were validated by observing the agreement with it. The image quality comparison between PC MRV and TR-MRA via calculating signal-to-noise ratios [SNRs] and contrast-to-noise ratios [CNRs] of the normal TS. Results: For imaging quality of normal TS, the mean SNR and CNR of TR-MRA were 452.14 and 440.92 respectively, significantly higher than the values of PC MRV (both p<0.001). The interobserver agreement of TR-MRA in identifying TS thrombosis from atretic TS was excellent [κ =0.951; 95% confidence interval (CI) 0.902-1.000], much higher than MRV (κ = 0.526; 95% CI, 0.389–0.663). Consensus of assessment based on TR-MRA was highly consistent with the gold standard (sensitivity of 100%, specificity of 93.75%) , superior to PC MRV (sensitivity of 75%, specificity of 81.8%). Conclusion: TR-MRA is better than PC MRV in the visualization of TS, and helpful to distinguish thrombosis from congenitally atretic TS.

Qualitative and quantitative evaluation of text printed with flexography on woven labels

2020 ◽  
pp. 004051752098174
Author(s):  
Urška Stanković Elesini ◽  
Sara Pančur ◽  
Klementina Možina
Keyword(s):  
Quantitative Evaluation ◽  
Positive Influence ◽  
Cotton Fibers ◽  
Mixed Composition ◽  
Cover Factor ◽  
Qualitative And Quantitative ◽  
Type Size ◽  
The Subject ◽  
Better Than

Even though textile labels are not often the subject of research, their quality must not be neglected. Printed typographic elements (i.e. letters and texts) must be visible regardless of textile ribbons and typeface or type size to be printed. Thus, the aim of the research was to qualitatively and quantitatively analyze and evaluate the text printed with flexography in two different typefaces (Helvetica and Verdana) in three different type sizes (4, 6 and 8 point) on five textile ribbons made of polyester and polyester/cotton mixture in two different weaves (plain and satin). The results of our research showed that the quality of printed letters is influenced by the properties of textile ribbons as well as by the chosen typographic features. When textile ribbons were composed of polyester filaments, the quality of prints was better than in the case of the mixed composition with cotton fibers. The coating and previously dyed textile ribbons had a positive influence on the quality of printed letters. The typeface Verdana gave more distinct and contrasted printed letters than Helvetica. The quality of printed letters (measured by the cover factor) decreased with the reduced type size; letters (and text) in a smaller type size (4 point) were hence, depending on the properties of textile ribbons, less visible.

scholarly journals PENERAPAN PENDEKATAN KONTEKSTUAL UNTUK MENINGKATKAN KETERAMPILAN MENULIS LAPORAN SISWA KELAS VIII SMP

LITERA ◽  
2013 ◽  
Vol 8 (1) ◽  
Author(s):  
Ary Kristiyani
Keyword(s):  
Learning Process ◽  
Research Study ◽  
Writing Skills ◽  
Contextual Approach ◽  
Report Writing ◽  
Qualitative And Quantitative ◽  
Field Notes ◽  
Quantitative Descriptive ◽  
Better Than

This study aimed to describe the improvement of the quality of the report writing learning process and the improvement of students’ report writing skills through the contextual approach. This study was an action research study employing John Elliott’s model consisting of two cycles. The subjects were Year VIII E studentsof SMP Negeri 1 Juwana. The data were collected through tests, observations, field notes, and interviews and were analyzed by means of the qualitative and quantitative descriptive techniques. The results showed that: (1) the learning of report writing was better than that conducted before; (2) students’ writing skills at the end of Cycle II (9.03) were better (mean = 9.03) than those before the action (mean = 7.71). Therefore, it was concluded that the application of CTL was capable of improving the quality of the report writing learning and the report writing skills of Year VIII Estudents of SMP Negeri 1 Juwana.

201Tl Scintigraphy in the Evaluation of Palpable and Nonpalpable Breast Lesions: Correlation with Mammography and Ultrasonography

1997 ◽  
Vol 36 (08) ◽  
pp. 282-288 ◽  
Author(s):  
T. Atasever ◽  
A. Özdemir ◽  
I. Öznur ◽  
N. I. Karabacak ◽  
N. Gökçora ◽  
...  
Keyword(s):  
Final Diagnosis ◽  
Lower Sensitivity ◽  
Breast Lesions ◽  
Breast Cancers ◽  
Combined Use ◽  
Malignant Breast ◽  
Malignant Lesions ◽  
Benign Breast Lesions ◽  
Palpable Breast ◽  
Metastatic Sites

Summary Aim: Our goal was to determine the clinical usefulness of TI-201 to identify breast cancer in patients with suspicious breast lesions on clinical examination, and/or abnormal radiologic (mammography and/or ultrasonography) findings. Methods: TI-201 scintigraphy were performed in sixty-eight patients with 70 breast abnormalities (51 palpable, 19 nonpalpable) and compared with mammography and ultrasonography (US). Early (15 min) and late (3 h) images of the breasts were obtained following the injection of 111 MBq (3 mCi) of TI-201. Visual and semiquantitative interpretation was performed. Results: Final diagnosis confirmed 52 malignant breast lesions and 18 benign conditions. TI-201 visualized 47 of 52 (90%) overall malignant lesions. Thirty-eight of 40 (95%) palpable and 9 of 12 (75%) nonpalpable breast cancers were detected by TI-201 scintigraphy. The smallest mass lesion detected by TI-201 measured 1.5x1.0 cm. Eleven breast lesions were interpreted as indeterminate by mammography and/or sonography. TI-201 scintigraphy excluded malignancy in 7 of 8 (88%) patients with benign breast lesions interpreted as indeterminate. Five of the 18 (28%) benign breast lesions showed TI-201 uptake. None of the fibroadenoma and fibrocystic changes accumulated TI-201. TI-201 scintigraphy, mammography and ultrasonography showed 90%, 92%, 85% overall sensitivity and 72%, 56%, 61% overall specificity respectively. Twenty-one of the 28 (75%) axillary nodal metastatic sites were also detected by TI-201. In malignant and benign lesions, early and late lesion/contralateral normal side (L/N) ratios were 1.58 ± 0.38 (mean ± SD) and 1.48 ± 0.32 (p >0.05), 1.87 ± 0.65 and 1.34 ± 0.20 (p<0.05) respectively. The mean early and late L/N ratios of malignant and benign groups did not show statistical difference (p>0.05). Conclusion: Overall, TI-201 scintigraphy was the most specific of the three methods and yielded favourable results in palpable breast cancers, while it showed lower sensitivity in nonpalpable cancers and axillary metastases. Combined use of TI-201 scintigraphy with mammography and US seems to be useful in difficult cases, such as dense breasts and indeterminate breast lesions.

Kepuasan Masyarakat Terhadap Pelayanan Kelurahan Setelah Pemekaran Di Tangerang Selatan

Liquidity ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 151-159
Author(s):  
Pitri Yandri
Keyword(s):  
Public Perception ◽  
Service Personnel ◽  
Urban Services ◽  
Hospitality Workers ◽  
Care Workers ◽  
Before And After ◽  
Cartesian Diagram ◽  
Better Than

The purpose of this study is (1) to analyze public perception on urban services before and after the expansion of the region, (2) analyze the level of people's satisfaction with urban services, and (3) analyze the determinants of the variables that determine what level of people's satisfaction urban services. This study concluded that first, after the expansion, the quality of urban services in South Tangerang City is better than before. Secondly, however, public satisfaction with the services only reached 48.53% (poor scale). Third, by using a Cartesian Diagram, the second priority that must be addressed are: (1) clarity of service personnel, (2) the discipline of service personnel, (3) responsibility for care workers; (4) the speed of service, (5) the ability of officers services, (6) obtain justice services, and (7) the courtesy and hospitality workers.

Development and Application of Quality Control System for Highway Subgrade Construction

2019 ◽  
Vol 2 (5) ◽  
Author(s):  
Tong Wang
Keyword(s):  
Quality Control ◽  
Real Time ◽  
Detection Method ◽  
System Development ◽  
Effective Control ◽  
Construction Process ◽  
Development Mode ◽  
The Road ◽  
Whole Process

The compaction quality of the subgrade is directly related to the service life of the road. Effective control of the subgrade construction process is the key to ensuring the compaction quality of the subgrade. Therefore, real-time, comprehensive, rapid and accurate prediction of construction compaction quality through informatization detection method is an important guarantee for speeding up construction progress and ensuring subgrade compaction quality. Based on the function of the system, this paper puts forward the principle of system development and the development mode used in system development, and displays the development system in real-time to achieve the whole process control of subgrade construction quality.

Implementasi Voip Server Berbasis IPV6 Dengan Raspberry PI

2019 ◽  
Vol 9 (01) ◽  
pp. 47-54
Author(s):  
Rabbai San Arif ◽  
Yuli Fitrisia ◽  
Agus Urip Ari Wibowo
Keyword(s):  
Internet Protocol ◽  
Wireless Transmission ◽  
Raspberry Pi ◽  
Test Results ◽  
Average Delay ◽  
Ipv6 Network ◽  
Ip Network ◽  
Selection Of ◽  
Better Than

Voice over Internet Protocol (VoIP) is a telecommunications technology that is able to pass the communication service in Internet Protocol networks so as to allow communicating between users in an IP network. However VoIP technology still has weakness in the Quality of Service (QoS). VOPI weaknesses is affected by the selection of the physical servers used. In this research, VoIP is configured on Linux operating system with Asterisk as VoIP application server and integrated on a Raspberry Pi by using wired and wireless network as the transmission medium. Because of depletion of IPv4 capacity that can be used on the network, it needs to be applied to VoIP system using the IPv6 network protocol with supports devices. The test results by using a wired transmission medium that has obtained are the average delay is 117.851 ms, jitter is 5.796 ms, packet loss is 0.38%, throughput is 962.861 kbps, 8.33% of CPU usage and 59.33% of memory usage. The analysis shows that the wired transmission media is better than the wireless transmission media and wireless-wired.

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