scholarly journals Infrared Thermal Imaging to Detect Inflammatory Intra-Abdominal Pathology in Infants

2020 ◽  
Vol 17 ◽  
Keyword(s):  
Thermal Imaging ◽  
Region Of Interest ◽  
Oral Intake ◽  
Imaging Method ◽  
Reference Region ◽  
Multilinear Regression ◽  
Infrared Thermal Imaging ◽  
Multilinear Regression Analysis ◽  
Gestational Age At Birth ◽  
The Relationship

A thermal imaging method to detect inflammatory intra-abdominal pathology in infants is proposed and evaluated through a clinical trial. Nine surgical infants, mean chronological age 58 days old (range: 21-83 days), mean weight 2.65 kg (range: 2.45-3.15 kg) with abdominal pathologies were included in the analysis. Infrared thermal image processing consisted of selecting the surgical region of interest where the area of abdominal inflammation was most likely to be, and an abdominal reference region on the same infant, with the aid of clustering segmentation. Skewness was found to be the most sensitive variable to significantly differentiate between the surgical region and reference region (p = 0.022). Multilinear regression analysis indicated that the relationship between the temperature difference signified by skewness and the patients' demographic information (age at time of imaging, gestational age at birth, weight at the time of imaging, birthweight, last stool prior to imaging and last oral intake prior to imaging) was not significant. The study indicated that inflammatory regions, such as those found in infants following surgery, would have a significantly different temperature distribution than the surrounding skin. The method differentiated between an inflammatory and non-inflammatory region on the abdomen

Investigation on the thermal effects of NaYF4:Er under 1550 nm irradiation

2017 ◽  
Vol 19 (12) ◽  
pp. 8465-8470 ◽  
Author(s):  
Hong Wang ◽  
Xiumei Yin ◽  
Mingming Xing ◽  
Yao Fu ◽  
Ying Tian ◽  
...  
Keyword(s):  
Laser Diode ◽  
Thermal Imaging ◽  
Thermal Effects ◽  
Imaging Method ◽  
Infrared Thermal Imaging

The thermal effects of NaYF4:Er microcrystals under 1550 nm laser diode irradiation were investigated using an infrared thermal imaging method.

scholarly journals Heating Characteristics of Film Prepared with Polymer Composites Containing Graphite

2018 ◽  
Author(s):  
Seojin Kim ◽  
Weontae Oh ◽  
Jong-Seong Bae ◽  
Jeong Hyun Yeum ◽  
Jaehyung Park ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Chemical Structure ◽  
Heating Temperature ◽  
Infrared Thermal Imaging ◽  
Dc Voltage ◽  
Copper Electrodes ◽  
Physical Chemical ◽  
Imaging Camera ◽  
Pet Film ◽  
The Relationship

Heating films were prepared by using poly(methyl methacrylate) and polybutadiene composites containing graphite. The heating film was prepared by casting the as-made polymer composite on PET film. Copper electrodes were attached to both ends of the as-prepared film, and the heating characteristics of the film was analyzed while applying DC voltage. The electrical conductivity and the heating temperature of the heating films depended on the size, the structure, the content and the dispersion characteristics of the graphite in the composite. The electrical resistance of the heating film was controlled to adjust the heating temperature of the film. The relationship between the physical/chemical structure and the heating characteristics of the composite film was studied by measuring the heating temperature as functions of film thickness and resistance by using an infrared thermal imaging camera. The lower the film resistance, the higher the heating temperature of the film. The surface temperature was uniform throughout the film.

Defects Detection in Concrete Structure with Infrared Thermal Imaging and Numerical Simulation

2011 ◽  
Vol 378-379 ◽  
pp. 345-348
Author(s):  
Hong Guo Xu ◽  
Zhong He Shui ◽  
Bo Chen ◽  
Wei Chen ◽  
Sha Ding
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Finite Element Simulation ◽  
Thermal Imaging ◽  
Concrete Structure ◽  
Infrared Imaging ◽  
Imaging Method ◽  
Infrared Thermal Imaging ◽  
Element Simulation ◽  
Nondestructive Testing Method

In this paper, infrared imaging and temperature sensor monitoring equipment are used to detect the defect of concrete. By means of experiment and numerical analysis, a nondestructive testing method for concrete based on infrared thermal imaging and the finite element simulation of temperature field was established. Experimental and simulation results show that infrared thermal imaging method and the finite element simulation of temperature field can effectively detect the defect in the sample. When combining such two methods together, the information of internal concrete structure can be revealed more comprehensively and accurately.

scholarly journals Examining the Relationship between Instructional Leadership and Organizational Health

2017 ◽  
Vol 5 (4) ◽  
pp. 18
Author(s):  
Hanifi Parlar ◽  
Ramazan Cansoy
Keyword(s):  
Instructional Leadership ◽  
School Principals ◽  
School Administrators ◽  
Organizational Health ◽  
Academic Emphasis ◽  
Multilinear Regression ◽  
Multilinear Regression Analysis ◽  
Resource Support ◽  
The Relationship ◽  
Organizational Health Inventory

The aim of this study was to examine the relationship between school administrators' instructional leadership behaviours, and organizational health of schools. The participants were 538 teachers working in elementary, middle and high schools located in the Umraniye district of Istanbul. The data was gathered through the "School Principals' Instructional Leadership Behaviours Questionnaire" and the "Organizational Health Inventory". In data analysis, the arithmetic mean, Pearson Product-Moment Correlation Coefficient, and Multilinear Regression Analysis were used. The results showed that the school principals performed the instructional leadership behaviours of determining and sharing the objectives of the school at the highest level. Among the organizational health dimensions of the schools, initiating structure was perceived at the highest level, while resource support and academic emphasis were perceived at lower levels compared to other dimensions. In the study, positive and significant correlations were found between the sub-dimensions of instructional leadership behaviours and those of organizational health of schools. The sub-dimensions of instructional leadership together explained 49% of the variance in organizational health. On the other hand, only determining and sharing the objectives of the school and forming a regular instructional-learning environment and positive school climate among the instructional leadership behaviours were positive and significant predictors of organizational health of schools.

scholarly journals Heating Characteristics of Films Prepared with Polymer-Graphite Composites

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Seojin Kim ◽  
Weontae Oh ◽  
Jong-Seong Bae ◽  
Seong Baek Yang ◽  
Jeong Hyun Yeum ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Chemical Structure ◽  
Heating Temperature ◽  
Infrared Thermal Imaging ◽  
Copper Electrodes ◽  
Physical Chemical ◽  
Imaging Camera ◽  
Pet Film ◽  
Graphite Composites ◽  
The Relationship

Heating films were prepared by using poly(methyl methacrylate) and polybutadiene composites containing graphite. The heating film was prepared by casting the as-made polymer composite on the PET film. Copper electrodes were attached to both ends of the as-prepared film, and the heating characteristics of the film were analyzed while applying the DC voltage. The electrical conductivity and the heating temperature of the heating films depended on the size, the structure, the content, and the dispersion characteristics of the graphite in the composite. The electrical resistance of the heating film was controlled to adjust the heating temperature of the film. The relationship between the physical/chemical structure and the heating characteristics of the composite film was studied by measuring the heating temperature as functions of film thickness and resistance by using an infrared thermal imaging camera. The lower the film resistance, the higher the heating temperature of the film. The surface temperature was uniform throughout the film.

scholarly journals Biomedical Applications of Infrared Thermal Imaging: Current State of Machine Learning Classification

Proceedings ◽  
2019 ◽  
Vol 27 (1) ◽  
pp. 46 ◽  
Author(s):  
Vardasca ◽  
Magalhaes ◽  
Mendes
Keyword(s):  
Machine Learning ◽  
Thermal Imaging ◽  
Biomedical Applications ◽  
Skin Surface ◽  
Peripheral Blood Flow ◽  
Imaging Method ◽  
Infrared Thermal Imaging ◽  
Machine Learning Classification ◽  
Non Invasive ◽  
Current State

Infrared thermal (IRT) imaging is a modality that allows non-invasive and non-ionizing monitoring of skin surface temperature distribution, providing underlining physiological information on peripheral blood flow, autonomic nervous system, vasoconstriction/vasodilatation, inflammation, transpiration or other processes that can contribute to skin temperature. This imaging method has been used in biomedical applications since 1956 and has proved its usefulness for vascular, neurological and musculoskeletal pathological situations. This research aims to identify and appraise the recent biomedical applications which had used intelligent analysis methods such as machine learning processes to classify and perform decision making towards improving the existing medical care, a literature review is presented and their operation in the biomedical applications of infrared thermal imaging.

scholarly journals Smile Attractiveness Evaluation of Patients Selected for a U.S.-Based Board Certification Examination

2021 ◽  
Author(s):  
Jen Soh ◽  
Zheng Dong Wang ◽  
Wei Bing Zhang ◽  
Chung How Kau
Keyword(s):  
Operating Characteristic ◽  
Multilinear Regression ◽  
Certification Examination ◽  
American Board Of Orthodontics ◽  
Multilinear Regression Analysis ◽  
The Mean ◽  
Clinical Photograph ◽  
And Gender ◽  
The Relationship

Abstract Objectives The aims of the study were to assess smile attractiveness of a collection of 68 smiling photographs of successfully treated cases submitted to the American Board of Orthodontics (ABO) clinical examination and identify variables that influence the assessment. Materials and Methods A panel of 81 non-Caucasian assessors from various clinical disciplines were instructed to score the smile attractiveness on a visual analog scale from 1 (least attractive) to 10 (most attractive) and to select which components contributed to a lesser attractive smile. The mean, standard deviations (SDs), and quartiles of the smile attractiveness were obtained with descriptive statistics. Multilinear regression analysis was performed to investigate the scores of the perceived quality of smile attractiveness when the clinical disciplines and gender of the assessors were the factors taken into consideration. Receiver operating characteristic (ROC) curve was generated to establish the relationship between smile attractiveness and the achievement of a perfect smile. Results The mean (SD) rating of each clinical photograph of the anterior occlusion on smiling ranged from 3.11 (1.47) as the least attractive smile to 7.59 (1.45) as the most attractive smile. The overall mean (SD) score for smile attractiveness was 5.30 (1.10). Problems associated with teeth, gingiva, and lips corresponded with a reduction of the smile attractiveness score by 1.56, 1.82, and 1.47, respectively. Gender was not associated with smile attractiveness ratings. Orthodontists, periodontists, and prosthodontists demonstrated no difference in the ratings, while plastic surgeons were more critical than orthodontists regarding smile attractiveness. Conclusions The study suggested that only 2 out of 68 AOB validated treatment finishes had a perfect and attractive smile.

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