scholarly journals Automatic assessment of the quality of G-banded metaphases A preliminary study

1992 ◽  
Vol 33 (SUPPLEMENT) ◽  
pp. 152-158 ◽  
Author(s):  
CLAES LUNDSTEEN ◽  
JAN MAAHR ◽  
AND TOMMY GERDES
Keyword(s):  
Automatic Assessment ◽  
Preliminary Study

scholarly journals The design of RIP belts impacts the reliability and quality of the measured respiratory signals

2021 ◽  
Author(s):  
Kristofer Montazeri ◽  
Sigurdur Aegir Jonsson ◽  
Jon Skirnir Agustsson ◽  
Marta Serwatko ◽  
Thorarinn Gislason ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Sleep Apnea ◽  
Automatic Assessment ◽  
Signal Reliability ◽  
Respiratory Airflow ◽  
Flow Quality ◽  
The Mean ◽  
Home Sleep Apnea Testing ◽  
Apnea Testing

Abstract Purpose Evaluate the effect of respiratory inductance plethysmography (RIP) belt design on the reliability and quality of respiratory signals. A comparison of cannula flow to disposable cut-to-fit, semi-disposable folding and disposable RIP belts was performed in clinical home sleep apnea testing (HSAT) studies. Methods This was a retrospective study using clinical HSAT studies. The signal reliability of cannula, thorax, and abdomen RIP belts was determined by automatically identifying periods during which the signals did not represent respiratory airflow and breathing movements. Results were verified by manual scoring. RIP flow quality was determined by examining the correlation between the RIP flow and cannula flow when both signals were considered reliable. Results Of 767 clinical HSAT studies, mean signal reliability of the cut-to-fit, semi-disposable, and disposable thorax RIP belts was 83.0 ± 26.2%, 76.1 ± 24.4%, and 98.5 ± 9.3%, respectively. The signal reliability of the cannula was 92.5 ± 16.1%, 87.0 ± 23.3%, and 85.5 ± 24.5%, respectively. The automatic assessment of signal reliability for the RIP belts and cannula flow had a sensitivity of 50% and a specificity of 99% compared with manual assessment. The mean correlation of cannula flow to RIP flow from the cut-to-fit, semi-disposable, and disposable RIP belts was 0.79 ± 0.24, 0.52 ± 0.20, and 0.86 ± 0.18, respectively. Conclusion The design of RIP belts affects the reliability and quality of respiratory signals. The disposable RIP belts that had integrated contacts and did not fold on top of themselves performed the best. The cut-to-fit RIP belts were most likely to be unreliable, and the semi-disposable folding belts produced the lowest-quality RIP flow signals compared to the cannula flow signal.

scholarly journals A Machine Vision Rapid Method to Determine the Ripeness Degree of Olive Lots

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 2940
Author(s):  
Luciano Ortenzi ◽  
Simone Figorilli ◽  
Corrado Costa ◽  
Federico Pallottino ◽  
Simona Violino ◽  
...  
Keyword(s):  
Machine Vision ◽  
Nearest Neighbors ◽  
Calibration Method ◽  
Mobile App ◽  
Harvest Time ◽  
Automatic Assessment ◽  
K Nearest Neighbors ◽  
Olive Ripeness ◽  
Olive Ripening

The degree of olive maturation is a very important factor to consider at harvest time, as it influences the organoleptic quality of the final product, for both oil and table use. The Jaén index, evaluated by measuring the average coloring of olive fruits (peel and pulp), is currently considered to be one of the most indicative methods to determine the olive ripening stage, but it is a slow assay and its results are not objective. The aim of this work is to identify the ripeness degree of olive lots through a real-time, repeatable, and objective machine vision method, which uses RGB image analysis based on a k-nearest neighbors classification algorithm. To overcome different lighting scenarios, pictures were subjected to an automatic colorimetric calibration method—an advanced 3D algorithm using known values. To check the performance of the automatic machine vision method, a comparison was made with two visual operator image evaluations. For 10 images, the number of black, green, and purple olives was also visually evaluated by these two operators. The accuracy of the method was 60%. The system could be easily implemented in a specific mobile app developed for the automatic assessment of olive ripeness directly in the field, for advanced georeferenced data analysis.

scholarly journals Impact of a Smart-Ring-Based Feedback System on the Quality of Chest Compressions in Adult Cardiac Arrest: A Randomized Preliminary Study

2021 ◽  
Vol 18 (10) ◽  
pp. 5408
Author(s):  
Chiwon Ahn ◽  
Seungjae Lee ◽  
Jongshill Lee ◽  
Jaehoon Oh ◽  
Yeongtak Song ◽  
...  
Keyword(s):  
Primary Outcome ◽  
Feedback System ◽  
Controlled Study ◽  
Feedback Group ◽  
Compression Depth ◽  
System Usability Scale ◽  
The Mean ◽  
Preliminary Study ◽  
The Ideal

This study aimed to assess the effectiveness of a novel chest compression (CC) smart-ring-based feedback system in a manikin simulation. In this randomized, crossover, controlled study, we evaluated the effect of smart-ring CC feedback on cardiopulmonary resuscitation (CPR). The learnability and usability of the tool were evaluated with the System Usability Scale (SUS). Participants were divided into two groups and each performed CCs with and without feedback 2 weeks apart, using different orders. The primary outcome was compression depth; the proportion of accurate-depth (5–6 cm) CCs, CC rate, and the proportion of complete CCs (≤1 cm of residual leaning) were assessed additionally. The feedback group and the non-feedback group showed significant differences in compression depth (52.1 (46.3–54.8) vs. 47.1 (40.5–49.9) mm, p = 0.021). The proportion of accurate-depth CCs was significantly higher in the interventional than in the control condition (88.7 (30.0–99.1) vs. 22.6 (0.0–58.5%), p = 0.033). The mean SUS score was 83.9 ± 8.7 points. The acceptability ranges were ‘acceptable’, and the adjective rating was ‘excellent’. CCs with smart-ring feedback could help achieve the ideal range of depth during CPR. The smart-ring may be a valuable source of CPR feedback.

scholarly journals Quality of Life, Depression, Anxiety Symptoms and Mood State of Wheelchair Athletes and Non-athletes: A Preliminary Study

2019 ◽  
Vol 10 ◽  
Author(s):  
Rodrigo Luiz Vancini ◽  
Andressa Amato Gomes ◽  
Hudson de Paula-Oliveira ◽  
Claudio de Lira ◽  
Weverton Rufo-Tavares ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Mood State ◽  
Anxiety Symptoms ◽  
Wheelchair Athletes ◽  
Preliminary Study

scholarly journals Soil quality of the tea and apple-growing sites in Mindat District, Chin state, Myanmar: A preliminary study

2021 ◽  
Vol 70 (1) ◽  
pp. 27-40
Author(s):  
Yaung Kwee ◽  
Khin Soe
Keyword(s):  
Physicochemical Properties ◽  
Silty Clay ◽  
Subtropical Climate ◽  
Clay Loam ◽  
Silty Clay Loam ◽  
Preliminary Study ◽  
Phosphorus And Potassium ◽  
Very High ◽  
Physicochemical Properties Of Soils

In this study, two sites from tea and apple growing sites were collected from Pyay village and Nine Mile village, Mindat district, Chin state of West Myanmar under a humid subtropical climate. The results of physicochemical properties of observed soils were neutral pH, favorable moisture, silty clay loam texture, very high content of organic carbon, organic matter and total nitrogen. However, the tea growing soil was very poor in phosphorus and potassium content. Moreover, both soils lack of available potassium. The content of heavy metals in both soils was not varied from each other and followed the order: Fe (iron) > Cu (copper) >Zn (zinc) > Pb (lead) > Cr (chromium) and was below the maximum allowed concentrations (MAC). Therefore, the studied soils are generally favorable for cultivation under the condition of application of phosphorus and potassium fertilizers. However, due to the regular application of fertilizers and pesticides, it is necessary to monitor these soils for PTE levels. Further research is recommended, which must include analyses of the physicochemical properties of soils to a two depths of 0-30 and 30-60 cm, especially for the area where fruit plants are grown. In addition, higher density of soil samples and sub-samples are necessary to produce a reliable dataset that will allow proper statistical analysis.

scholarly journals POSSIBILITIES OF ULTRASONIC MONITORING OF ENDOMETRIUM AND OVARIES IN PATIENTS AFTER CANCELLATION OF LONG-TERM RECEPTION OF COMBINED ORAL CONTRACEPTIVES WHEN PLANNING PREGNANCY

2019 ◽  
Vol 6 (4) ◽  
pp. 215-220
Author(s):  
Sh. N Bortsvadze ◽  
Evgeniya A. Svidinskaya ◽  
T. A Dzhibladze ◽  
I. D Khokhlova ◽  
Yan Van
Keyword(s):  
Menstrual Cycle ◽  
Oral Contraceptives ◽  
Ovarian Tissue ◽  
Hormonal Contraception ◽  
Reproductive Function ◽  
Good Health ◽  
Automatic Assessment ◽  
Normal Limits ◽  
Ultrasound Diagnostics

The article aims to assess the possibility of ultrasound scanning and dopplerstudy in the assessment of the condition of the ovaries and endometrial in patients after long intake of COC, predicting the restoration of reproductive function after the abolition of hormonal contraception. Material and methods. In 2018-2019, 37 women were examined after the abolition of oral contraceptives, which they took for a long period of time. At the time of the examination, all the patients stopped taking COC at least 2 months ago due to the fact that they were planning a pregnancy. UW the study was conducted on the apparat Voluson E8 Expert (General Electric), improving the quality of diagnostics used Automatic assessment of follicle condition based on ultrasonic echography (Sono AVCTM follicle) and tomographic ultrasound (TUI). Results. According to the study significant changes recorded 17 patients whose menstrual cycle did not recover within the first 6 months after the cancellation of COC. In a group of 20 patients with a regular menstrual cycle, the results of the study were within normal limits, pregnancy within 6 months occurred on their own in 8 of them. Conclusion. The possibilities of 3 dimensional reconstruction and programs for evaluating the follicular apparatus significantly improve the quality of ultrasound diagnostics, give more information about the presence of small follicles, blood flow in the ovarian tissue, the structure of the cortical apparatus substances and stroma, whichis the ability of a clinician to obtain a complete understanding of the condition of the ovaries and endometrial and predicting a good health of patients. The article may be of interest to obstetricians-gynecologists, ultrasound specialists, endocrinologists, reproductive specialists.

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