Part Of Face Research Articles

Necrotizing Fasciitis: A Case Report. What to Do? When? And How?

Necrotizing fasciitis is one of the rare reported pathological condition in oral and maxillofacial region. It is characterized by rapidly progressive necrosis of fascia, with involvement of skin and muscles in late stages and can be fatal. We report a case of necrotizing fasciitis of neck and part of face, who presented to our institute with chief complaint of swelling since 15 days. The fascitis was found odontogenic in origin with initially involvement of buccal, and masseteric spaces. The condition was further complicated as patient had diabetes mellitus that prolonged the healing, favoring the environment for bacterial growth and necrosis. Drainage of the involved spaces followed by subsequent debridement of wound and reconstruction with skin graft was done. This report is addition to existing literature elaborating the treatment of necrotizing fasciitis in patient with comorbidity, in stages. What one should do? When and how?

Lack of affective priming indicates attitude-behaviour discrepancy for COVID-19 affiliated words

The ongoing novel coronavirus (COVID-19) pandemic has resulted in the enforcement of national public health safety measures including precautionary behaviours such as border closures, movement restrictions, total or partial lockdowns, social distancing, and face mask mandates in order to reduce the spread of this disease. The current study uses affective priming, an indirect behavioural measure of implicit attitude, to evaluate COVID-19 attitudes. Explicitly, participants rated their overall risk perception associated with contracting COVID-19 significantly lower compared to their perception of necessary precautions and overall adherence to public health measures. During baseline trials, participants explicitly rated COVID-19 affiliated words as unpleasant, similar to traditional unpleasant word stimuli. Despite rating the COVID-19 affiliated words as unpleasant, affective priming was not observed for congruent prime-target COVID-19 affiliated word pairs when compared to congruent prime-target pleasant and unpleasant words. Overall, these results provide quantitative evidence that COVID-19 affiliated words do not invoke the same implicit attitude response as traditional pleasant and unpleasant word stimuli, despite conscious explicit rating of the COVID-19 words as unpleasant. This reduction in unpleasant attitude towards COVID-19 related words may contribute towards decreased fear-related behaviours and increased incidences of risky-behaviour facilitating the movement of the virus.

Frontal tangential coronal view two-dimensional ultrasonography in assessment of fetal face [mouth and nose] in comparison with four-dimensional ultrasonography

BackgroundThe fetal face reflects strictly the development of the fetal brain during its growth. Four-dimensional (4D) examination permits continuous monitoring of the examined parts of fetal face and surface. The final performance of obstetric sonographic images depends upon multiple factors, such as fetal lie, uterine wall, abdominal wall fat, amniotic fluid, and the number of gestations which may limit the optimum performance of (4D) ultrasound. The two-dimensional (2D) ultrasound is the first choice due to its wide availability, low cost, and real-time capabilities. The tangential view obtained by (2D) ultrasound coronal sections through the face showed the nose, nostril, lips, eye, lens, and hard palate.ResultsOne hundred and sixty fetuses showed straight forwards obstetric examination by both 2D and 4D examinations with identical final reports. While the total number of fetuses with clear images by 2D frontal tangential coronal examination was 191 cases, only 29 cases failed, whereas 170 cases obtained clear images by 4D examination, and 50 cases failed. Both 2D and 4D ultrasound failed to obtain clear images of 19 cases, while 4D failed for 31 cases, and 2D failed for 10 cases. 2D imaging was found to be significantly better than 4D imaging, with a P value of 0.009.Conclusion2D ultrasound using the frontal tangential coronal view is an essential part of the fetal examination and more superior than 4D ultrasound in assessing facial anatomy and anomalies, as well comparable to 4D ultrasound as regards fascial expression.

Housing policy, shortage and socio-spatial segregation in the city of Piracicaba (SP)

The objective of the paper is to evaluate the close relationship between public policies of social housing, housing deficit and the process of socio-spatial segregation in the city of Piracicaba, located in the interior of the state of São Paulo, in Brazil, between the years 2000-2020. For this, the method adopted consists of a mixed quali-quantitative approach. Whether due to lack or inadequacy, the housing problem is one of the main urban shortages, whose measurement can be made from the deficit and household inadequacy indicators. To address these issues, housing policies are presented as a state intervention to provide access to housing. However, after years of implementing these policies, the paradox created by them is noted, since, although they were able to face part of the problem, they contributed to the intensification of socio-spatial segregation on the intra-urban scale. In these terms, Piracicaba is an emblematic case of the relationship that is established territorially between these elements, in which socio-spatial segregation is seen as a by-product of social housing policies, under the pretext of coping with housing needs. The investigation therefore seeks to contribute to research on the relationship between housing policies and socio-spatial segregation in medium-sized cities in São Paulo, inserting the concept of deficit as a basic element of this problem.

Property Risk Assessment for Expansive Soils in Louisiana

The physical properties of soil can affect the stability of construction. In particular, soil swelling potential (a term which includes swelling/shrinking) is often overlooked as a natural hazard. Similar to risk assessment for other hazards, assessing risk for soil swelling can be defined as the product of the probability of the hazard and the value of property subjected to the hazard. This research utilizes past engineering and geological assessments of soil swelling potential, along with economic data from the U.S. Census, to assess the risk for soil swelling at the census-block level in Louisiana, a U.S. state with a relatively dense population that is vulnerable to expansive soils. Results suggest that the coastal parts of the state face the highest risk, particularly in the areas of greater population concentrations, but that all developed parts of the state have some risk. The annual historical property loss, per capita property loss, and per building property loss are all concentrated in southeastern Louisiana and extreme southwestern Louisiana, but the concentration of wealth in cities increases the historical property loss in most of the urban areas. Projections of loss by 2050 show a similar pattern, but with increased per building loss in and around a swath of cities across southwestern and south-central Louisiana. These results may assist engineers, architects, and developers as they strive to enhance the resilience of buildings and infrastructure to the multitude of environmental hazards in Louisiana.

DualFace: Two-stage drawing guidance for freehand portrait sketching

Special skills are required in portrait painting, such as imagining geometric structures and facial detail for final portrait designs. This makes it a difficult task for users, especially novices without prior artistic training, to draw freehand portraits with high-quality details. In this paper, we propose dualFace, a portrait drawing interface to assist users with different levels of drawing skills to complete recognizable and authentic face sketches. Inspired by traditional artist workflows for portrait drawing, dualFace gives two-stages of drawing assistance to provide global and local visual guidance. The former helps users draw contour lines for portraits (i.e., geometric structure), and the latter helps users draw details of facial parts, which conform to the user-drawn contour lines. In the global guidance stage, the user draws several contour lines, and dualFace then searches for several relevant images from an internal database and displays the suggested face contour lines on the background of the canvas. In the local guidance stage, we synthesize detailed portrait images with a deep generative model from user-drawn contour lines, and then use the synthesized results as detailed drawing guidance. We conducted a user study to verify the effectiveness of dualFace, which confirms that dualFace significantly helps users to produce a detailed portrait sketch.

3D Face Recognition Based on an Attention Mechanism and Sparse Loss Function

Face recognition is one of the essential applications in computer vision, while current face recognition technology is mainly based on 2D images without depth information, which are easily affected by illumination and facial expressions. This paper presents a fast face recognition algorithm combining 3D point cloud face data with deep learning, focusing on key part of face for recognition with an attention mechanism, and reducing the coding space by the sparse loss function. First, an attention mechanism-based convolutional neural network was constructed to extract facial features to avoid expressions and illumination interference. Second, a Siamese network was trained with a sparse loss function to minimize the face coding space and enhance the separability of the face features. With the FRGC face dataset, the experimental results show that the proposed method could achieve the recognition accuracy of 95.33%.

Using Partial Differential Equation Face Recognition Model to Evaluate Students’ Attention in a College Chinese Classroom

The partial differential equation learning model is applied to another high-level visual-processing problem: face recognition. A novel feature selection method based on partial differential equation learning model is proposed. The extracted features are invariant to rotation and translation and more robust to illumination changes. In the evaluation of students’ concentration in class, this paper firstly uses the face detection algorithm in face recognition technology to detect the face and intercept the expression data, and calculates the rise rate. Then, the improved model of concentration analysis and evaluation of a college Chinese class is used to recognize facial expression, and the corresponding weight is given to calculate the expression score. Finally, the head-up rate calculated at the same time is multiplied by the expression score as the final concentration score. Through the experiment and analysis of the experimental results in the actual classroom, the corresponding conclusions are drawn and teaching suggestions are provided for teachers. For each face, a large neighborhood set is firstly selected by the k -nearest neighbor method, and then, the sparse representation of sample points in the neighborhood is obtained, which effectively combines the locality of k -nearest neighbor and the robustness of sparse representation. In the sparse preserving nonnegative block alignment algorithm, a discriminant partial optimization model is constructed by using sparse reconstruction coefficients to describe local geometry and weighted distance to describe class separability. The two algorithms obtain good clustering and recognition results in various cases of real and simulated occlusion, which shows the effectiveness and robustness of the algorithm. In order to verify the reliability of the model, this paper verified the model through in-class practice tests, teachers’ questions, and interviews with students and teachers. The results show that the proposed joint evaluation method based on expression and head-up rate has high accuracy and reliability.

Transmission of SARS-CoV-2 during a 2-h domestic flight to Okinawa, Japan, March 2020.

BackgroundCoronavirus disease (COVID‐19), caused by severe acute respiratory syndrome coronavirus (SARS‐CoV‐2), has rapidly spread globally. Potentially infected individuals travel on commercial aircraft. Thus, this study aimed to investigate and test the association between the use of face masks, physical distance, and COVID‐19 among passengers and flight attendants exposed to a COVID‐19 passenger in a domestic flight.MethodsThis observational study investigated passengers and flight attendants exposed to COVID‐19 on March 23, 2020, on board a flight to Naha City, Japan. Secondary attack rates were calculated. Whole‐genome sequencing of SARS‐CoV‐2 was used to identify the infectious linkage between confirmed cases in this clustering. The association between confirmed COVID‐19 and proximity of passengers' seats to the index case and/or the use of face masks was estimated using logistic regression.ResultsFourteen confirmed and six probable cases were identified among passengers and flight attendants. The secondary attack rate was 9.7%. Twelve of 14 SARS‐CoV‐2 genome sequences in confirmed cases were identical to that of the index case or showed only one nucleotide mutation. Risk factors for infection included not using a face mask (adjusted odds ratio [aOR]: 7.29, 95% confidence interval [95% CI]: 1.86‐28.6), partial face mask use (aOR: 3.0, 95% CI: 0.83‐10.8), and being seated within two rows from the index patient (aOR: 7.47, 95% CI: 2.06‐27.2).ConclusionSARS‐CoV‐2 was transmitted on the airplane. Nonuse of face masks was identified as an independent risk factor for contracting COVID‐19 on the airplane.

Оrganizational aspects of primary health care for personal skeleton damage caused by road traffic accidents

The purpose of the study. Study the organizational aspects of providing primary health care for victims with the facial department of the skeleton as a result of traffic accidents. Materials and methods. To achieve this goal, a retrospective study was conducted. The work included victims of road accidents with damage to the facial part of the skull between the ages of 18 and 70 years. In total, 150 victims were included in the study between 2000 and 2019. Results of the study and their analysis. The study shows that injuries to the facial skeleton as a result of traffic accidents are relevant. As a result of the study, it was found that as a result of an accident, there is approximately the same number of closed and open injuries. At the same time, open injuries, which could be regarded as medium and severe, were identified in 45 (30%) cases. In addition, data analysis showed that in 30,7% of observations, first aid was provided by random witnesses and/ or relatives of victims who did not have the skills and necessary knowledge to provide such assistance. In addition, an additional 19,3 per cent of first aid was provided by staff of various services who have some knowledge and skills in first aid. This is due to the fact that in the first group, first aid was provided faster than in the second group. The lack of the necessary skills to provide first aid to victims with such an injury can be explained by the rather high percentage of errors, which in the first group amounted to 18,7%, while employees of various services showed good results in providing such assistance and errors were not noted. Key words: primary health care, damage to the facial skeleton, traffic accident.

ANALYSIS OF THE STRESS AND DEFORMATION FOR THE ARTILLERY BREECH BLOCK BEFORE AND AFTER REPAIR

The mechanical structure of the breech block after repairing is different from the original breech block. It is assembly parts of the new front-end face, the original breech block, and the connecting screws. So analyzing the stress and deformation of the breech block is an important issue in the repair process for the breech block. The paper is focused on analyzing the stress and deformation of the breech block before and after repair using the finite element method (FEM) approach. Besides, the results of the FEM are compared with the analytical method approach. The comparison between the results of the analytical method and FEM results shows a very good agreement (before repair, the difference in maximal stress between the two methods is 2.12%). The study object of this paper is the wedge-type breechblock.

Predicting attractiveness from face parts reveals multiple covarying cues.

In most studies of facial attractiveness perception, judgments are based on the whole face images. Here we investigated how attractiveness judgments from parts of faces compare to perceived attractiveness of the whole face, and to each other. We manipulated the extent and regions of occlusion, where either the left/right or the top/bottom half of the face was occluded. We also further segmented the face into relatively small horizontal regions involving the forehead, eyes, nose, or mouth. The results demonstrated the correlated nature of face regions, such that an attractiveness judgment for one face part can be highly predictive of the attractiveness of the whole face or the other parts. The left/right half of the face created more accurate predictions than the top/bottom half. Judgments involving a larger area of the face (i.e., left/right or top/bottom halves) produced more accurate predictions than those derived from smaller regions, such as the eyes or the mouth alone, but even the smallest and most featureless region investigated (the forehead) provided useful information. The correlated nature of the attractiveness of face parts shows that perceived attractiveness is determined by multiple covarying cues that the visual system can exploit to determine attractiveness from a single glance.

Experimental investigations of interference effects on wind pressures of tall buildings

The interference effects between two tall buildings on building surface wind pressures are studied by using wind tunnel experiments. Different breadth ratios ( B r = B interfering/ Bprincipal), depth ratios ( D r = D interfering/ Dprincipal), and relative locations of the two buildings are tested. The results show that the interference effects on mean wind pressures on the windward face and the right face are more considerable than those on the other two faces. The windward face mainly shows the shielding effect, while the right face exhibits the amplification effect. The surface interference factors ( SIF) of windward and right faces under different breadth ratios and depth ratios have clear correlation with the reference values ( B r = D r = 1.0), and a series of correlation formulas are obtained. The SIF values of the windward face in tandem arrangement and the maximum and minimum interference factors of the right face in parallel arrangement are formulated. The most prominent local peak pressure under different cases mainly concentrates in the side edge and upper edge of the windward face, the left upper corner, left lower corner, and the upper-middle part of the right face.

Facial Beauty Prediction From Facial Parts Using Multi-Task and Multi-Stream Convolutional Neural Networks

Automatic analysis of facial beauty has become an emerging computer vision problem in recent years. Facial beauty prediction (FBP) aims at developing a human-like model that automatically makes facial attractiveness predictions. In this study, we present and evaluate a face attractiveness prediction approach using facial parts as well as a multi-task learning scheme. First, a deep convolutional neural network (CNN) pre-trained on massive face datasets is utilized for face attractiveness prediction, which is capable of automatic learning of high-level face representations. Next, we extend our deep model to other facial attribute recognition tasks. Hence, a multi-task learning scheme is leveraged by our deep model to learn optimal shared features for three correlated tasks (i.e. facial beauty assessment, gender recognition as well as ethnicity identification). To further enhance the attractiveness computation accuracy, specific regions of face images (i.e. left eye, nose and mouth) as well as the whole face are fed into multi-stream CNNs (i.e. three two-stream networks). Each two-stream network adopts a facial part as well as the full face as input. Extensive experiments are conducted on the SCUT-FBP5500 benchmark dataset, where our approach indicates significant improvement in accuracy over the other state-of-the-art methods.

Methodological Aspects of Evaluating the Particle Size Distribution of Powder Elastomeric Materials

The properties of crumb rubber (CR) of unsorted end-of-life tires and of gas masks face part crushed at ambient temperature, as well as powder elastomeric materials (PEM) obtained by high-temperature shear grinding (HTSG) of CR and high-temperature shear co-grinding of CR with thermoplastic elastomer have been investigated. The methods of dry screening with vibrating sieve, wet laser diffraction, scanning electron microscopy, determination of the specific surface area by the BET method by sorption nitrogen and powder agglomeration were used. The effect of an anti-agglomerating additive on the results of determining the particle size distribution by the methods of dry vibrating sieving and wet laser diffraction has been investigated. Methodological recommendations for determining the particle size distribution of powder elastomeric materials (PEM) obtained by the HTSG have been developed.

APLIKASI PENGENALAN IRIS MATA MENGGUNAKAN METODE HOUGH TRANSFORM DAN GABOR WAVELET

Biometric system is a development of the basic method of identification system by using the characteristics of humans as it’s object. These include face, fingerprints, signature, palms, iris, ears, sounds even DNA. Face recognition is one of the identification techniques in biometrics that uses part of the face as its parameter. One of the biometric parts of face is Iris. Iris is a unique part of the eyes, this is because the pattern of the somebody eyes will be quite different from the other, even genetically identical twins have different iris patterns. This research will use the Hough and Gabor method to perform iris recognition. The results show that the application has succeeded in recognizing the selected eye image if the eye image is registered in the database.

Susceptibility Evaluation of Clinically Isolated HSV-1 Strains to Acyclovir: A Phenotypic and Genotypic Study

Background: Mutations in herpes simplex virus Thymidine kinase (TK, UL23) and DNA polymerase (pol, UL30) genes may confer resistance to acyclovir (ACV). Phenotypic resistance must be determined along with genotypic resistance to achieve complete acyclovir susceptibility. Objectives: The present study aimed to characterize HSV-1 clinical isolates from outpatients and organ transplant recipients in terms of phenotypic ACV resistance. Moreover, genotypic resistance to ACV was assessed through sequencing the viral TK and pol genes amplified from virus-infected cell DNA. Methods: Twenty-six HSV-1 clinical isolates collected between 2016 and 2019 were examined for drug susceptibility. The samples were collected from eyes, oropharyngeal, facial, and other skin parts of immunocompetent and immunocompromised individuals. Phenotypic susceptibility was determined by using three different concentrations of ACV. The results were expressed based on the ability of ACV in reducing viral plaques by 50%. Genotyping was carried out by polymerase chain reaction and sequencing of TK and pol genes. Results: All the strains were characterized as sensitive at 0.01 and 0.05 µg.ml-1 concentrations to ACV. Seventy percent inhibition was observed at ≥ 0.1 µg.mL-1 of ACV for three isolates (two from patients who received transplants and one from an outpatient). Nine natural polymorphisms were detected in the TK gene and 31 in the Pol gene. Furthermore, four susceptible-associated mutations in the DNA pol gene were analyzed. A substitution was encoded in the conserved region of the pol Exo III motif (M553L), and nine amino acid substitutions in TK were detected. The phylogenetic analysis of partial genome sequences revealed high diversity in the TK and pol genes of HSV-1. Conclusions: A higher number of mutations were observed in patients who received transplants and underwent long-term treatment compared with outpatients. The high genetic variability of HSV-1 TK and DNA pol was not associated with phenotypic resistance.

PECULIARITIES OF MORPHOMETRIC PARAMETERS OF SUPRA-, INFRAORBITAL AND MENTAL FORAMINA IN THE PERINATAL PERIOD OF ONTOGENESIS

57 specimens of 4-10-months human fetuses and 7 newborns were examined by means of uptodate anatomical methods with the aim to identify location of the supra-, infraorbital and mental foramina on the facial part of the skull during the perinatal period of ontogenesis. Nonsynchronous enlargement of the distance from the supraorbital foramen to bregma in the right and left, distance between supra-, infraorbital and mental foramina was found to be specifi c for the examined morphometric parameters of the location of the supra-, infraorbital and mental foramina in fetuses and newborns, except parameters of the distance between the mental foramen and inferior margin of the jaw in the right and left which are characterized by their gradual enlargement. Parameters of the distance from the supraorbital foramen to the bregma in the right and left in the fetuses and newborns are characterized by the two periods of an accelerated and two periods of slow development: 6-7 months and 10 months of the neonatal period – periods of an accelerated development, 4-6th and 7-10 months – periods of slow development; for the distance between the supra- and infraorbital foramina in the right and left – from the 4th to the 7th month of development and from the 8th month to the newborn period – periods of an accelerated development, and from the 7th to the 8th month of development – the period of slow development; for the distance between the orbital and mental foramina on the right and left periods of an accelerated development, it is 6-7 months and 8-9 months of development, and 7-8 months – a period of slow development; the distance between the supra-, infraorbital and mental foramina is characterized by the same periods of the fi rst accelerated and slow development, it is 5-7th and 7-8th months of development, respectively, and the second period of accelerated development is slightly diff erent, namely: for the distance between the supraorbital foramina from the 9th month to the newborn period, for the distance between the infraorbital foramina from the 9th to the 10th month of development, for the distance between the mental foramina – 8-9th month of development – the second period of an accelerated development. The periods of 7-8 months and 10 months and the newborn period are critical periods of development for all the parameters examined.

Frailty Impact during and after Pulmonary Rehabilitation

Frailty is a condition of reduced physiologic reserve common in COPD candidates to pulmonary rehabilitation, however no study has investigated whether frailty impacts the decline that a great part of COPD patients face after the completion of the rehabilitation program. Study objectives are to verify frailty impact on pulmonary rehabilitation outcomes during and after the program. This is a secondary analysis of a longitudinal study. Stable COPD patients GOLD I-III were randomized to a three-month endurance versus endurance and resistance training. Participants performed a multidimensional assessment at baseline, at the end of the rehabilitation program and after six months. Frailty was defined using a two-step approach including PRISMA-7 and Timed “Up and Go” test. Frailty interaction with time was evaluated using generalized least-squared regression models for repeated measures, correcting for potential confounders. Of the 53 participants with a mean age of 73 (SD:8) years 38 (72%) were frail. The mean 6MWD and V’O2peak increased in frail and no frail patients during pulmonary rehabilitation and declined after its completion, while CAT score showed a steep decline during the training, and a mild decline later. Frailty showed a significant interaction with time in terms of 6MWD variation during (β adj:43.6 meters, p-value:0.01) and after (β adj:-47 meters, p-value:0.02) pulmonary rehabilitation; no significant interaction was found in terms of V’O2peak and CAT score variation. In conclusion, frail COPD patients have a higher potential to benefit from pulmonary rehabilitation, but a higher risk to have a steeper decline later. Supplemental data for this article is available online at https://doi.org/10.1080/15412555.2021.1967915 .

Short FCC and CCCto Detect Eyes and Mouth in Dofferent Image Size

The face parts that can uses for recognition e.g eyes, mouth, nose, etc. Most of the face recognition did resampling the image to the same size. This research aim to regconize the eyes and mouth in the image with different size. For the features extraction algorithm that use is short Freman Chain Code and for the recognition use Consecutive Changing Characters algorithm. Data that use to be data training is the images that have the different size. The result of experiment shows that using adaptive Freeman Chain Code algorithm and adaptive Consecutive Changing Characters algorithm, the percentage of success rate is 60% for eyes and 75% for mouth.