ABSTRACT
Age estimation is crucial in legal and humanitarian contexts. Forensic professionals may use various procedures to estimate age, including dental analysis, bone density tests, evaluation of physical characteristics including facial bone structure and development, and image-based methods. Although images are often the only material available, visual observation of photographic material is an imprecise method in age estimation, which can compromise judicial decision-making. Analyzing 4000 photographs from the Brazilian Federal Police database, representing four age groups (6, 10, 14, and 18 years), the study employed automated analysis by marking 28 photogrammetric points. Data were used to establish facial patterns by age and sex using the facial geometric morphometrics method. Performance was assessed through a Multinomial Logistic Regression model, evaluating accuracy, sensitivity, and specificity across the categorical age groups. Analyses were conducted using R software, with a 5 % significance level. The study found that facial geometric morphometrics achieved an overall accuracy of 69.3 % in age discrimination, with higher accuracy in males (74.7 %) compared to females (65.8 %) (p < 0.001). The method excelled at predicting the age of 6-year-olds with 87.3 % sensitivity and 95.6 % specificity but had lower performance at 14 years. It showed greater accuracy in distinguishing age groups with larger age gaps, achieving up to 99.5 % accuracy between certain groups, and was particularly effective in differentiating ages of 6 and 10 years in females and 10, 14, and 18 years in males. The facial geometric morphometrics emerges as a promising approach for age estimation among children and adolescents in forensic settings.
Subject(s)
Age Determination by Skeleton , Face , Photography , Humans , Adolescent , Child , Male , Female , Face/anatomy & histology , Age Determination by Skeleton/methods , Logistic Models , Sensitivity and Specificity , Brazil , Photogrammetry , Forensic Anthropology/methodsABSTRACT
OBJECTIVE: Design and validation a photographic atlas of Peruvian foods to evaluate the food consumption of children from 6 to 12 months of age. METHODS: Quantitative, descriptive, and cross-sectional study. 12 food groups were established according to their nutrient content. The atlas is designed to be applied to mothers, fathers, or caregivers of children from 6 to 12 months of age. The methodology was divided into four stages: i) selection of the food list, regional recipe books from Peru were reviewed, then interviews with mothers of children in the age range were verified for the final selection of the food list; ii) preparation and weighing of food, utensils were used to establish home measurements and with the established weight the macro and micronutrients were calculated with tables of composition of Peruvian foods; iii) development of the photographic session, a professional photographer with previous experience in similar works was used; and iv) expert validation, with the participation of 5 nutritionists with experience in infant feeding. RESULTS: The proposed atlas includes 57 foods with a total of 91 photographs. The content validity coefficient according to food category and in total obtained an assessment of 0.75 (Cohen's kappa coefficient), which gives it acceptable validity and agreement. CONCLUSIONS: The photographic atlas of food portions for infant feeding in Peru is a practical, reliable, and culturally appropriate visual tool to help estimate the amount of food consumed by this population, which will facilitate the estimation of food intake.
Subject(s)
Photography , Humans , Peru , Infant , Cross-Sectional Studies , Female , Male , Atlases as Topic , Infant Nutritional Physiological Phenomena , Feeding Behavior , Diet/statistics & numerical data , Reproducibility of Results , Infant Food/statistics & numerical data , Nutritive ValueABSTRACT
Leaf Area Index (LAI) is the ratio of ground surface area covered by leaves. LAI plays a significant role in the structural characteristics of forest ecosystems. Therefore, an accurate estimation process is needed. One method for estimating LAI is using Digital Cover Photography. However, most applications for processing LAI using digital photos do not consider the brown color of plant parts. Previous research, which includes brown color as part of the calculation, potentially produced biased results by the increased pixel count from the original photo. This study aims to enhance the accuracy of LAI estimation. The proposed methods consider the brown color while minimizing errors. Image processing is carried out in two stages to separate leaves and non-leaf pixels by using the RGB color model for the first stage and applying the CIELAB color model in the second stage. Proposed methods and existing applications are evaluated against the actual LAI value obtained using Terrestrial Laser Scanning (TLS) as the ground truth. The results demonstrate that the proposed methods effectively identify non-leaf parts and exhibit the lowest error rates compared to other methods. In conclusion, this study provides alternative techniques to enhance the accuracy of LAI estimation in forest ecosystems.
Subject(s)
Forests , Image Processing, Computer-Assisted , Photography , Plant Leaves , Plant Leaves/anatomy & histology , Photography/methods , Image Processing, Computer-Assisted/methods , Trees , ColorABSTRACT
To study about and reflect on the disease is to highlight the ways of seeing and saying what can a body and its power to be affected before fingerprints or traces that degrade it. This article exposes epistemological research on social representations brackets (where register know doctor) disease from the registry of Clinical Dermatology in the second half of the 19th century. This is resorted to an analysis of medical photographs preserved in archives of Colombia and Spain taking as discursive forms of seeing and saying the disease who have disfiguring effects in the body.
Estudiar y reflexionar sobre la enfermedad es poner de relieve las formas de ver y decir acerca de lo que puede un cuerpo y su potencia de ser afectado ante las huellas o vestigios que lo degradan. Este artículo expone los soportes epistemológicos de una investigación sobre las representaciones sociales (en la que se inscribe el saber médico) de la enfermedad desde el registro de la dermatología clínica durante la segunda mitad del siglo XIX. Para esto, se recurrió a un análisis de fotografías médicas conservada en archivos de Colombia y España y como horizonte discursivo las formas de ver y decir la enfermedad que tiene efectos deformantes en el cuerpo.
Subject(s)
Photography , Photography/history , Humans , History, 19th Century , Spain , Colombia , Dermatology/history , Skin Diseases/history , History, 20th CenturyABSTRACT
INTRODUCTION: Globally, a shift is occurring to recognize the importance of young peoples' health and well-being, their unique health challenges, and the potential they hold as key drivers of change in their communities. In Haiti, one of the four leading causes of death for those 20-24 years old is pregnancy, childbirth, and the weeks after birth or at the end of a pregnancy. Important gaps remain in existing knowledge about youth perspectives of maternal health and well-being within their communities. Youth with lived experiences of maternal near-misses are well-positioned to contribute to the understanding of maternal health in their communities and their potential role in bringing about change. OBJECTIVES: To explore and understand youth perspectives of maternal near-miss experiences that occurred in a local healthcare facility or at home in rural Haiti. METHODS: We will conduct a qualitative, community-based participatory research study regarding maternal near-miss experiences to understand current challenges and identify solutions to improve community maternal health, specifically focused on youth maternal health. We will use Photovoice to seek an understanding of the lived experiences of youth maternal near-miss survivors. Participants will be from La Pointe, a Haitian community served by their local healthcare facility. We will undertake purposeful sampling to recruit approximately 20 female youth, aged 15-24 years. Data will be generated through photos, individual interviews and small group discussions (grouped by setting of near-miss experience). Data generation and analysis are expected to occur over a three-month period. ETHICS AND DISSEMINATION: Ethics approval will be sought from Centre Médical Béraca in La Pointe, Haiti, and from the Hamilton Integrated Research Ethics Board in Hamilton ON, Canada. We will involve community stakeholders, especially youth, in developing dissemination and knowledge mobilisation strategies. Our findings will be disseminated as an open access publication, be presented publicly, at conferences, and defended as part of a doctoral thesis.
Subject(s)
Maternal Health , Humans , Female , Haiti , Pregnancy , Adolescent , Young Adult , Near Miss, Healthcare , Community-Based Participatory Research , Rural Population , Photography , Qualitative Research , AdultABSTRACT
Introduction: One of the challenges faced by the Colombian Health System is to improve access to health services for the dispersed and isolated rural population, particularly in the field of dermatology. This article examines the implementation of a teledermatology service using a PC and camera versus smartphone technology. Methods: A total of 542 teledermatology visits were conducted, involving 478 patients, in addition to 64 visits for clinical follow-up for patients as per the dermatologist's recommendation. Out of the 478 patients, 461 met the inclusion criteria and agreed to participate in the study. The data collection instrument from the general practitioner or referring provider covered three consultation moments: (1) sending an initial consultation, (2) providing a response to the patient, and (3) sending a follow-up consultation. Seven hundred forty-seven records were completed by the general practitioner for the three consultation moments. Furthermore, 372 consultations were documented by the dermatologist or referring provider for two moments: (1) response to the initial consultation by the dermatologist, and (2) response to the follow-up consultation by the dermatologist. After validating the information reported in the instruments, a descriptive analysis of the data was conducted, utilizing absolute frequencies and percentages for qualitative variables and measures of central tendency (mean, median, standard deviation, and interquartile range) for quantitative variables. The data were analyzed from 747 records of the referring provider instrument related to 461 patients, between 18 and 98 years of age, with a predominantly female representation. Results: The results indicated that for teleconsultations conducted using a mobile device, the average total duration of the teleconsultation was longer on the traditional platform compared with the mobile device (13.03 vs. 8.27 min). Additionally, it was observed that the time taken to store, send, and capture a single image (clinical or dermoscopic) using the mobile device was three times lower than that on the conventional platform (25 vs. 75 s). Similar findings were noted for teleconsultations carried out by the dermatologist, predominantly utilizing a mobile device. The average consultation time was shorter for the mobile device compared with the traditional platform (8.14 vs. 12 min). Conclusions: The cost reduction suggests that the operation of the service is more efficient with smartphone technology in comparison to the use of a PC and camera. Teledermatology with smartphones provides a streamlined, efficient, and technically sound process for obtaining clinical and dermoscopic images.
Subject(s)
Dermatology , Photography , Smartphone , Telemedicine , Humans , Female , Dermatology/methods , Dermatology/economics , Dermatology/instrumentation , Male , Adult , Middle Aged , Adolescent , Photography/instrumentation , Aged , Young Adult , Colombia , Telemedicine/economics , Skin Diseases/diagnosis , Skin Diseases/therapy , Remote Consultation/economics , Remote Consultation/instrumentation , Aged, 80 and overABSTRACT
Camera traps became the main observational method of a myriad of species over large areas. Data sets from camera traps can be used to describe the patterns and monitor the occupancy, abundance, and richness of wildlife, essential information for conservation in times of rapid climate and land-cover changes. Habitat loss and poaching are responsible for historical population losses of mammals in the Atlantic Forest biodiversity hotspot, especially for medium to large-sized species. Here we present a data set from camera trap surveys of medium to large-sized native mammals (>1 kg) across the Atlantic Forest. We compiled data from 5380 ground-level camera trap deployments in 3046 locations, from 2004 to 2020, resulting in 43,068 records of 58 species. These data add to existing data sets of mammals in the Atlantic Forest by including dates of camera operation needed for analyses dealing with imperfect detection. We also included, when available, information on important predictors of detection, namely the camera brand and model, use of bait, and obstruction of camera viewshed that can be measured from example pictures at each camera location. Besides its application in studies on the patterns and mechanisms behind occupancy, relative abundance, richness, and detection, the data set presented here can be used to study species' daily activity patterns, activity levels, and spatiotemporal interactions between species. Moreover, data can be used combined with other data sources in the multiple and expanding uses of integrated population modeling. An R script is available to view summaries of the data set. We expect that this data set will be used to advance the knowledge of mammal assemblages and to inform evidence-based solutions for the conservation of the Atlantic Forest. The data are not copyright restricted; please cite this paper when using the data.
As armadilhas fotográficas tornaramse o principal método de observação de muitas espécies em grandes áreas. Os dados obtidos com armadilhas fotográficas podem ser usados para descrever os padrões e monitorar a ocupação, abundância e riqueza da vida selvagem, informação essencial para a conservação em tempos de rápidas mudanças climáticas e de cobertura do solo. A perda de habitat e a caça furtiva são responsáveis pelas perdas populacionais históricas de mamíferos no hotspot de biodiversidade da Mata Atlântica, especialmente para espécies de médio e grande porte. Aqui apresentamos um conjunto de dados de levantamentos com armadilhas fotográficas de mamíferos de médio e grande porte (>1 kg) em toda a Mata Atlântica. Compilamos dados de 5.380 armadilhas fotográficas instaladas no nível do chão em 3.046 locais, de 2004 a 2020, resultando em 43.068 registros de 58 espécies. Esses dados acrescentam aos conjuntos de dados existentes de mamíferos na Mata Atlântica por incluir as datas de operação das câmeras, que são necessárias para análises que lidam com detecção imperfeita. Também incluímos, quando disponíveis, informações sobre importantes preditores de detecção, como marca e modelo da câmera, uso de isca e obstrução do visor da câmera que pode ser medido a partir de imagens de exemplo em cada local da câmera. Além de estudos sobre os padrões e mecanismos por trás da ocupação, abundância relativa, riqueza e detecção, o conjunto de dados aqui apresentado pode ser usado para estudar os padrões de atividade diária das espécies, nível de atividade e interações espaçotemporais entre as espécies. Além disso, os dados podem ser usados em combinação com outras fontes de dados em diversas análises com modelagem populacional integrada. Um script R está disponível para visualizar um resumo do conjunto de dados. Esperamos que este conjunto de dados seja usado para aumentar o conhecimento sobre as assembleias de mamíferos e usado para informar soluções baseadas em evidências para a conservação da Mata Atlântica. Os dados não são restritos por direitos autorais e, por favor, cite este documento ao usar os dados.
Subject(s)
Forests , Mammals , Mammals/physiology , Animals , Photography , Biodiversity , Conservation of Natural Resources/methodsABSTRACT
OBJECTIVE: This study aimed to evaluate occlusion development after premature loss or extraction of deciduous anterior teeth, by means of a prospective cohort study. METHODS: Fifteen infants and children aged 1 to 5 years old were longitudinally assessed (with loss or extraction of deciduous anterior teeth [n = 9], and without tooth losses [n = 6]). Photographs and dental casts at the baseline and after 24 months of follow-up were performed. Dental casts were scanned, and linear measurements were made on the digitalized models (missing tooth space, arch perimeter, arch length, arch width, intercanine length and intercanine width). The t-test was used for groups comparisons (α = 0.05). RESULTS: Individuals' mean age at baseline was 2.93 (± 1.18) years. No statistically significant differences were observed in the missing tooth space in the group with tooth loss during the 24 months of follow-up (p > 0.05). Arch perimeter, arch length, arch width, intercanine length and intercanine width did not show differences between the groups (p > 0.05). Qualitative photographic evaluation revealed other changes in the dental arches and occlusion, such as exfoliation and eruption of deciduous teeth, eruption of permanent teeth, self-correction or establishment of malocclusion, among others. CONCLUSION: The results suggest that the premature loss of deciduous anterior teeth does not affect the perimeter, length and width of the dental arches; however, other alterations that lead to malocclusion could be established.
Subject(s)
Dental Occlusion , Malocclusion , Child , Infant , Humans , Child, Preschool , Prospective Studies , Photography , Tooth EruptionABSTRACT
This study explored the learning experiences of intensive care residents in an intensive care unit (ICU) during night shifts and the development of communication skills in this community of practice. This action research qualitative study used the photovoice method in four workshops. A group of nine residents shared their learning experiences and collectively analyzed, built, and presented proposals to improve residents' communication skills in the community of practice in which they become intensivists. Participatory thematic analysis was conducted. Students concluded that night shifts in the ICU offered a perfect situational learning environment for communication with one-on-one resident-teacher relationships, less administrative work, and more resident responsibility, improving intensivist identity. Role models, reflective thinking, and teamwork are essential for fostering communication skills among intensivist community members and are all trainable. The results and student suggestions were presented to teachers and decision-makers in the clinic. These photovoice strategies developed students' abilities to share their critical views and suggestions with decision-makers for subsequent implementation, enhancing their confidence in their learning process, strengthening trust-based relationships with teachers, and improving future intensivists' practice communities.
Subject(s)
Communication , Intensive Care Units , Internship and Residency , Photography , Qualitative Research , Humans , Female , Male , Learning , Adult , Critical Care/psychologyABSTRACT
Objective: We aimed to investigate the accuracy of remote examination by photographs compared to in-person clinical examination for detecting potentially malignant oral lesions (PMOLs). Methods: The Reporting Guide and Guidelines for Writing Systematic Reviews (Preferred Reporting Items for Systematic Reviews and Meta-Analysis [PRISMA]) guided the reporting of findings. The search was conducted by two independent reviewers in six databases with no language restriction until November 2022. The Population, Test-Index, Reference Standard, Outcome and Study Design (PIROS) strategy guided the eligibility criteria, and studies with adult patients (P) examined remotely (I) and in-person (R) to verify the detection of PMOLs (O) were considered. The methodological quality was assessed by QUADAS-2, and the certainty of the evidence was measured by the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE). Results: A total of 769 files were identified. After removing duplicates and reading titles and abstracts, 16 were read in full, from which 6 articles then comprised the qualitative synthesis. The oral clinical examination was the reference standard in four studies. Five studies presented high risk of bias in at least one assessment domain. A high probability of detection of PMOL by remote examination (97.37%) was observed for the three studies included in the meta-analysis, which presented high heterogeneity among them. The certainty of evidence for the outcome was considered very low. Conclusions: Remote tools for detecting PMOLs may be feasible and assertive, but new studies are required to incorporate them into clinical practice. Clinical Relevance: Remote examination for the detection of PMOLs has the potential to favoring the early diagnosis of malignant lesions.
Subject(s)
Mouth Neoplasms , Remote Consultation , Humans , Mouth Neoplasms/diagnosis , PhotographyABSTRACT
RESUMO Objetivo: Avaliar o efeito do colírio de brimonidina 0,2% na redução da hiperemia e do sangramento ocular durante as cirurgias de estrabismo, em comparação com o colírio de nafazolina 0,025% + feniramina 0,3%. Métodos: Foram avaliados 14 pacientes com estrabismo e indicação de correção cirúrgica bilateral. Foi instilado antes do procedimento, de forma aleatória, um colírio em cada olho dos pacientes avaliados. A análise subjetiva da hiperemia conjuntival e do sangramento perioperatório foi realizada de forma duplo-cega, por dois cirurgiões. A avaliação objetiva do nível de hiperemia conjuntival foi realizada por análise das imagens obtidas por meio do software ImageJ®. Resultados: A análise de modelos multivariados de efeito misto indicou diferenças estatisticamente significantes entre os grupos em relação à hiperemia (avaliador 2) e ao sangramento intraoperatório (avaliadores 1 e 2), com maiores escores nos casos tratados com colírio de nafazolina + feniramina. Entretanto, não houve diferença estatística na análise objetiva realizada por meio da saturação de cores obtidas pelo programa ImageJ®. Conclusão: O colírio de brimonidina pode ser superior ao colírio de nafazolina + feniramina na redução do sangramento, levando-se em conta apenas a análise subjetiva.
ABSTRACT Objective: To evaluate the effect of 0.2% brimonidine eye drops in reducing hyperemia and ocular bleeding during strabismus surgeries, in comparison with 0.025% naphazoline + 0.3% pheniramine eye drops. Methods: Fourteen patients with strabismus and indication for bilateral surgical correction were evaluated. Before the procedure, the eye drops were instilled randomly in each eye of the evaluated patients. The subjective analysis of conjunctival hyperemia and perioperative bleeding was performed in a double-blind manner, by 02 surgeons. The objective assessment of the level of conjunctival hyperemia was performed by analyzing the images obtained using the ImageJ® software. Results: The analysis of multivariate mixed effect models indicated statistically significant differences between the groups in relation to hyperemia (rater 2) and intraoperative bleeding (raters 1 and 2) with higher scores in cases treated with naphazoline + pheniramine eye drops. However, there were no statistically significant differences in the objective analysis of color saturation obtained by the ImageJ® program. Conclusion: Brimonidine eye drops may be superior to naphazoline + pheniramine eye drops in reducing bleeding, taking into account the subjective analysis only.
Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Pheniramine/administration & dosage , Eye Hemorrhage/prevention & control , Strabismus/surgery , Brimonidine Tartrate/administration & dosage , Hyperemia/prevention & control , Intraoperative Complications/prevention & control , Naphazoline/administration & dosage , Ophthalmic Solutions/administration & dosage , Premedication , Ophthalmologic Surgical Procedures/methods , Vasoconstriction/drug effects , Photography , Double-Blind Method , Administration, Topical , Adrenergic alpha-2 Receptor Agonists/administration & dosage , Hemostasis, Surgical/methodsABSTRACT
INTRODUCTION: Age-related macular degeneration (AMD) is an eye disease that occurs in patients over 50 years old. Early diagnosis enables timely treatment to stabilize disease progression. However, the fact that the disease is asymptomatic in its early stages can delay treatment until it progresses. As such, screening in specific contexts can be an early detection tool to reduce the clinical and social impact of the disease. OBJECTIVE: Assess the effectiveness of screening methods for early detection of AMD in adults aged 50 years or older. METHODS: A systematic review of comparative observational studies on AMD screening methods in those aged 50 years or older, compared with no screening or any other strategy. A literature search was conducted in the MEDLINE (via PubMed), Embase, Cochrane Library and Lilacs database. RESULTS: A total of 5,290 studies were identified, three of which met the inclusion criteria and were selected for the systematic review. A total of 8,733 individuals (16,780 eyes) were included in the analysis. The screening methods assessed were based on optical coherence tomography (OCT) compared with color fundus photography, and OCT and telemedicine testing compared to a standard eye exam. CONCLUSION: The systematized data are limited and only suggest satisfactory performance in early screening of the population at risk of developing AMD. OCT and the telemedicine technique showed promising results in AMD screening. However, methodological problems were identified in the studies selected and the level of evidence was considered low.
Subject(s)
Macular Degeneration , Humans , Middle Aged , Macular Degeneration/diagnosis , Macular Degeneration/prevention & control , Tomography, Optical Coherence/methods , Treatment Outcome , Diagnostic Techniques, Ophthalmological , PhotographyABSTRACT
In 1936 the Austrian geologist Paul Waitz published a seminal bibliographical, historical essay on Colima volcano, Mexico. His article exemplifies well the paths by which geology became what Lorraine Daston has termed sciences of the archive, that is, the manner in which scientific disciplines became concerned with archival work. Waitz's historical description of studies of Colima volcano built a genealogy of observations, ultimately constructing a history of the volcano itself. By bringing attention not only to Waitz's discourse but also to his treatment of visual objects, such as pictorial and photographic landscapes, my article points out how long-term aesthetics, such as the picturesque and the sublime, functioned as tropes which enabled a standardized perception, essential to visualize a clear history of scientific observations, from the landscape paintings of the nineteenth-century artist Johann Moritz Rugendas to Waitz's own photographs.
Subject(s)
Geology , Inventions , Archives , Mexico , PhotographyABSTRACT
This study aimed to develop a non-invasive and efficient method for measuring and identifying individual seahorses (Hippocampus patagonicus) in their natural habitat. A total of 976 seahorses were captured and photographed on a measuring board to obtain standard length (Ls) measurements. Head photographs were also taken for individual recognition, and a set of 100 seahorses were tagged with visible implant elastomers (VIE) to verify the correspondence between photograph recognition and the applied tags. The analysis showed no significant difference between left and right Ls measurements. The unique pattern of white dots on the heads served as individual fingerprints, consistent with VIE tagging. The recapture rate was 12%, with 89 individuals observed multiple times. Two distinct growth patterns were identified: males exhibited higher growth rates and a negative correlation with Ls compared to females. Released seahorses exhibited significantly different behaviors that were related to their sizes (Ls). Smaller seahorses tended to swim slowly towards nearby holdfasts, while larger seahorses escaped further or remained rigid before grasping a holdfast. The proposed methodology allowed for estimating individual seahorse growth rates, and the measurements were objective and precise. The results were obtained through quick and minimally invasive manipulation of the observed individuals.
Subject(s)
Smegmamorpha , Humans , Male , Animals , Female , Photography , EcosystemABSTRACT
OBJECTIVE: To report and discuss the experience of the Circle of Culture in a school space, with attention to the social identity of adolescents. METHOD: Action research, conducted under the assumptions of the Circle of Culture, from August to December 2019. Participants were 16 adolescents, enrolled in Elementary School, in a state public school, in the rural district of a city of São Paulo. Data collection took place through photographic records, participant observation and field diary. RESULTS: The relations of friendship were the central agenda of the Circles of Culture when dialogues about their structuring and influence on the identity construction were developed. CONCLUSION: Circles of Culture mediated by health professionals in the school setting have the power to problematize the reality of each adolescent's life and, simultaneously, dialogue about the common, an aspect that empowers identity projects.
Subject(s)
Health Services Research , Schools , Humans , Adolescent , Brazil , PhotographyABSTRACT
During the IAEA's Mobile Radioisotope Exhibition (1960-1965) through the eventful roads of five Latin American countries (Mexico, Uruguay, Argentina, Brazil, and Bolivia), a variety of photographs were taken by an unknown Mexican official photographer, and by Josef Obermayer, a staff driver from Vienna. The exhibition carried not only bits of nuclear sciences and technologies, but also the political symbolism of the 'friendly atom' as a token of modernization. The photographs embarked on different trajectories, though all of them ended up at the training and exchange official's desk in charge of the exhibition, Argentinian physicist Arturo Cairo. The ones taken in Mexico also had a local circulation as propaganda intended to promote radioisotope applications. The two sets of images were intended to show the contrast between modernity and traditional society, but they did it from different gazes. Our paper argues that, in the case of Mexico, the photographer reinforced representations of the country which were already popularized by Hollywood for foreign and local audiences. On the other hand, the Viennese photographer's gaze delivers an autoethnography of his dutiful journey. We also argue that Obermayer's projection is one of what Roger Bartra has conceptualized as the 'salvage on the mirror'.
Subject(s)
Photography , Physics , Humans , History, 20th Century , Latin America , Photography/history , Physics/history , Radioisotopes , Exhibitions as TopicABSTRACT
Oral leukoplakia (OL) evaluation through photographs can be performed with the aid of Artificial Intelligence (AI). Supervised Machine Learning (SML) processes, which are based on labeling, are indicated to ensure a reliable computational mechanism of lesion identification. Thus, OL classification and demarcation within a photograph are crucial for SML. Objective: To label OL lesions in homogeneous and non-homogeneous using photographs, and to test a segmentation procedure, aiming for its use in a trustworthy dataset. Methods: Fifty-five OL photographs were inserted into Fiji/ImageJ, and a region of interest (ROI) was defined to obtain a three-dimensional plot of pixel color clustering. Then, the photography and the plot were used for OL classification by a panel of 5 experts in Oral Medicine. The segmentation process was performed by two operators which created a second ROI for evaluation of the lesion by area, perimeter, centroid, and circularity. The intraclass correlation coefficient was calculated and a comparative analysis was performed (Mann Whitney and Unpaired t-test). Then, segmentation was accomplished by creating a computer code including the precise information of the lesional site, in an automated binarization fashion. Results: The experts agreed in 53% of the cases regarding OL classification. An excellent level of operator agreement related to the size and site of the lesion was found. Although, differences were found comparing the lesion's area, perimeter, and centroid (p<0.05). The code was effective for the segmentation separating the lesion from the background. Conclusion: The agreement on OL classification among experts accounted for half of the cases. The lesion segmentation was possible using a computer code based on interactive drawing. With an excellent agreement between operators, the manual delimitation of lesional sites can be used for SML, but the differences regarding lesional perimeter and its classification should be considered before labeling and creating a good dataset. (AU)
Subject(s)
Humans , Leukoplakia, Oral , Photography , Artificial Intelligence , LeukoplakiaABSTRACT
Anisopodus subarmatus Melzer, 1931 is synonymized with A. jaculus (Gyllenhal, 1817) and a discussion about the type-locality of the latter is provided. Photographs of the lectotype of the former and of the holotype of the latter are provided.(AU)
Subject(s)
Animals , Coleoptera/anatomy & histology , Coleoptera/classification , Species Specificity , Photography/instrumentationABSTRACT
BACKGROUND: Access to resources for children with disabilities and their caregivers are lacking worldwide, especially for low-and middle-income countries, especially those of Latin origin. Furthermore, decreased social visibility coupled with minimal support available for caregivers can negatively affect their overall mental well-being. Limited community-based participatory research has been done to understand the experiences of caregivers and identify effective measures of support. OBJECTIVES: To explore the impact of childhood disabilities on caregiver well-being and to assess how interactions between caregivers and their community affect their mental well-being. METHODS: This study used photovoice and community-based participatory research methodology. We recruited participants who had children enrolled in a rehabilitative program called Rehabilitation with Hope, located in Huancayo, Peru. Participants were given three photo assignments concerning their experiences as caregivers and they presented their photos at photo discussions after each assignment. We used thematic analysis to identify the main themes that arose from the discussions. RESULTS: Four main themes were identified: stigma, social support, self-esteem, and effects of photovoice. Caregivers often felt stigmatized by the community due to their child's disability. However, they found a stronger sense of social support and overall improved sense of self-esteem through the program and participation in photovoice. CONCLUSIONS: The results of this study suggest the effects of stigma on caregivers may be mitigated through enhanced social support and self-esteem. Additionally, photovoice is an effective tool to combat community stigma by allowing caregivers to share their narratives.
Subject(s)
Caregivers , Disabled Children , Social Stigma , Child , Humans , Caregivers/psychology , Community-Based Participatory Research/methods , Disabled Children/psychology , Peru , Social Support , Photography , Self Concept , Program EvaluationABSTRACT
Objetivo: reconocer la eficacia de la identificación del biotipo facial mediante fotografía vs. radiografías laterales de cráneo. Materiales y métodos: se realizó un estudio de tipo descriptivo, retrospectivo de la literatura. Para ello se consultaron bases de datos electrónicas, como PubMed, ScienceDirect, Lilacs, Epistemonikos, Sage, Healey Library, Scielo y Google Scholar. Las palabras clave utilizadas fueron: photographs; extraoral photographs; cephalometry; lateral cephalograms; facial biotypes; brachyfacial; mesofacial; dolichofacial. La búsqueda se restringió a artículos en inglés, español y portugués publicados desde el año 2017 hasta el año 2022. Resultados: el biotipo facial permite determinar las características morfológicas y funcionales relacionadas con la dirección en la cual el macizo craneofacial crece y se desarrolla. Existen varios métodos que posibilitan la identificación del biotipo facial. En la actualidad hay diversos tipos de software que, mediante fotografías digitales de las dimensiones y proporciones faciales, permiten identificar el biotipo facial; no obstante, el estándar de oro para la determinación del biotipo facial son las radiografías laterales de cráneo, en las que, por medio de un sistema de trazos, se logra la identificación del biotipo. Este es un método que demanda mayores conocimientos teóricos-anatómicos, por lo que, en la mayoría de los casos, los resultados son más precisos. Sin embargo, al ser ambas técnicas "operador-dependiente", la veracidad de los resultados dependerá en gran medida de los conocimientos, las habilidades y las destrezas de cada profesional. Conclusión: tanto las fotografías digitales como las radiografías laterales del cráneo permiten la identificación del biotipo facial. La precisión de su resultado dependerá, en gran medida, de las habilidades, las destrezas y los conocimientos del profesional, tanto de la técnica como de sus conocimientos básicos de anatomía y radiología.
Objective: To recognize the efficacy of facial biotype identification by photography vs. lateral skull radiographs. Materials and methods:A descriptive, retrospective study of the literature was carried out, for which electronic databases such as PubMed, Science Direct, Lilacs, Epistemonikos, Sage, Healey Library, Scielo and Google Scholar were consulted. The keywords used were: photographs; extraoral photographs; cephalometry; lateral cephalograms; facial biotypes; brachyfacial; mesofacial; dolichofacial. The search was restricted to articles in English, Spanish, and Portuguese published from 2018 to 2022. Results: The facial biotype allows the determination of the morphological and functional characteristics related to the direction in which the craniofacial massif grows and develops. There are several methods that allow the identification of the facial biotype, currently there are different types of software that allow the analysis through digital photographs of the dimensions and facial proportions that allow the identification of the facial biotype; However, the gold standard for determining the facial biotype are lateral skull radiographs, in which biotype identification is achieved by means of a trace system, being a method that demands greater theoretical-anatomical knowledge, therefore that the results in most cases are more precise, however, as both techniques are "operator dependent", the veracity of the results found to a great extent on the knowledge, abilities and skills of each professional. Conclusion: Both digital photographs and lateral skull radiographs allow the identification of the facial biotype, the accuracy of the result will depend mainly on the skills, abilities, and knowledge of the professional, both the technique and of his basic understanding of anatomy and radiology.