In response to unwaveringly high attrition from STEM pathways, STEM Intervention Programs (SIPs) support STEM students in effort to increase retention. Using mixed methods (survey and focus groups), we studied students at one university who were either supported or unsupported by SIPs to understand how students may differ in experiences believed to contribute to STEM persistence. We evaluated: sense of belonging, scientific self-efficacy, scientific community values, scientific identity, and STEM involvement. The enrollment status of students two and a half years postsurvey was also tracked. SIP students reported significantly higher science identity and sense of belonging and were more involved in STEM-related activities than counterparts unsupported by SIPs. Differences in these measures were correlated with race/ethnicity, college generation status, and age. Notably, SIP students had higher odds of persisting in STEM than students not supported by SIPs. Focus group data provide additional meaning to the measured survey constructs and revealed nuanced qualitative differences between SIP and non-SIP student experiences. Overall, being involved in a SIP at our institution trends positively with theoretical models that explain STEM student persistence. SIPs have the potential to provide and/or facilitate meaningful and critical support, and students without those intentional supports may be left behind.
Science , Students , Humans , Male , Female , Science/education , Young Adult , Focus Groups , Adult , Universities , Technology/education , Engineering/education , Surveys and Questionnaires , Self Efficacy , Mathematics/education
Social justice is increasingly being seen as relevant to the science curriculum. We examine the intersection of participatory science, social justice, and higher education in the United States to investigate how instructors can teach about social justice and enhance collaborations to work toward enacting social justice. Participatory science approaches, like those that collect data over large geographic areas, can be particularly useful for teaching students about social justice. Conversely, local-scale approaches that integrate students into community efforts can create powerful collaborations to help facilitate social justice. We suggest a variety of large-scale databases, platforms, and portals that could be used as starting points to address a set of learning objectives about social justice. We also describe local-scale participatory science approaches with a social justice focus, developed through academic and community partnerships. Considerations for implementing participatory science with undergraduates are discussed, including cautions about the necessary time investment, cultural competence, and institutional support. These approaches are not always appropriate but can provide compelling learning experiences in the correct circumstances.
Curriculum , Science , Social Justice , Students , Science/education , Humans , Teaching , Universities , Technology/education , Community Participation
Background: Informal caregivers are called upon to provide substantial care, but more needs to be known about technology use among older adult and caregiver dyads. Objective: This study described technology use among older adults and their caregivers, explored potential correlates of technology use, and highlighted implications for practice. Methods: A cross-sectional survey was conducted among unpaid caregivers of older adults (n=486). Primary outcomes were self-reported technology (devices and functions) use among caregivers and their oldest care recipient. The concordance of technology use among caregivers and care recipients was also examined. Multivariable regression models were conducted separately for caregivers and care recipients. Results: Greater proportions of caregivers used all examined technologies, except for the medication alerts or tracking function, than care recipients. Caregivers used an average of 3.4 devices and 4.2 functions, compared to 1.8 devices and 1.6 functions used by their care recipients. Among caregivers, younger age, higher income, and higher education were associated with more technology use (P<.05). Among care recipients, younger age, not having cognitive dysfunction, and caregiver's technology use were associated with more technology use (P<.05). Conclusions: Understanding technology use patterns and device adoption across diverse caregiver and care recipient populations is increasingly important for enhancing geriatric care. Findings can guide recommendations about appropriate technology interventions and help providers communicate and share information more effectively with patients and their caregivers.
Caregivers , Humans , Caregivers/psychology , Caregivers/statistics & numerical data , Cross-Sectional Studies , Male , Female , Aged , Aged, 80 and over , Middle Aged , Surveys and Questionnaires , Self Report , Technology
This study investigated people's ethical concerns of surveillance technology. By adopting the spectrum of technological utopian and dystopian narratives, how people perceive a society constructed through the compulsory use of surveillance technology was explored. This study empirically examined the anonymous online expression of attitudes toward the society-wide, compulsory adoption of a contact tracing app that affected almost every aspect of all people's everyday lives at a societal level. By applying the structural topic modeling approach to analyze comments on four Hong Kong anonymous discussion forums, topics concerning the technological utopian, dystopian, and pragmatic views on the surveillance app were discovered. The findings showed that people with a technological utopian view on this app believed that the implementation of compulsory app use can facilitate social good and maintain social order. In contrast, individuals who had a technological dystopian view expressed privacy concerns and distrust of this surveillance technology. Techno-pragmatists took a balanced approach and evaluated its implementation practically.
Attitude , Mobile Applications , Privacy , Humans , Hong Kong , Contact Tracing/ethics , Contact Tracing/methods , Trust , Confidentiality , Technology/ethics , Internet , Female , Male , Adult , Narration
This paper provides a justificatory rationale for recommending the inclusion of imagined future use cases in neurotechnology development processes, specifically for legal and policy ends. Including detailed imaginative engagement with future applications of neurotechnology can serve to connect ethical, legal, and policy issues potentially arising from the translation of brain stimulation research to the public consumer domain. Futurist scholars have for some time recommended approaches that merge creative arts with scientific development in order to theorise possible futures toward which current trends in technology development might be steered. Taking a creative, imaginative approach like this in the neurotechnology context can help move development processes beyond considerations of device functioning, safety, and compliance with existing regulation, and into an active engagement with potential future dynamics brought about by the emergence of the neurotechnology itself. Imagined scenarios can engage with potential consumer uses of devices that might come to challenge legal or policy contexts. An anticipatory, creative approach can imagine what such uses might consist in, and what they might imply. Justifying this approach also prompts a co-responsibility perspective for policymaking in technology contexts. Overall, this furnishes a mode of neurotechnology's emergence that can avoid crises of confidence in terms of ethico-legal issues, and promote policy responses balanced between knowledge, values, protected innovation potential, and regulatory safeguards.
Imagination , Humans , Policy Making , Creativity , Neurosciences/legislation & jurisprudence , Neurosciences/ethics , Technology/legislation & jurisprudence , Technology/ethics
The development of urbanization has brought new challenges to the ecological environment, and the promotion of green technology innovation and development is widely recognized as an essential method to achieve cities' economic benefits and environmental protection. This paper examines whether the new urbanization pilot policies (NUP) increase green technology innovation (GTI) from both theoretical and empirical perspectives. This paper examines the impact of new urbanization on GTI by analyzing data from 285 cities in China between 2010 and 2021, using the multi-period DID model with the implementation of NUP as an exogenous policy shock. The study results indicate that NUP significantly affects GTI, and the conclusion still holds after the parallel trend test, placebo test, and other robustness tests. Heterogeneity analysis shows that the NUP significantly enhances GTI in low environmental pollution, non-resource-based, Medium-sized, and Central Region cities. The test of moderating effect shows that NUP has a "linkage effect" with the government's environmental attention, financial investment in innovation, and regional talent pooling. The findings of this paper provide empirical evidence and decision-making reference for promoting NUP and sustainable development of cities.
Cities , Urbanization , China , Humans , Pilot Projects , Inventions , Technology , Sustainable Development/trends , Conservation of Natural Resources/methods
Objetivo: Conhecer a percepção dos enfermeiros em ambiente hospitalar sobre a implementação das tecnologias na assistência de enfermagem com foco na segurança do paciente. Métodos: Estudo descritivo, qualitativo, realizado com oito enfermeiros, responsáveis pelo gerenciamento de riscos em hospitais. Utilizou-se a técnica Snowball para eleger os participantes e a plataforma Skype para as entrevistas, realizadas no período de março a abril de 2021. Resultados: Apontou-se a utilização da tecnologia por meio do prontuário eletrônico, com a inserção de programa como o Tasy, o qual avançou para comunicação em rede, com vistas a facilitar checagens, auditorias, indicadores, gerenciamento e análise dos eventos. Desvelou-se também para a utilização do código de barras na identificação do paciente e no controle de dispensação e recebimento de medicamentos. No entanto, foram apresentadas limitações na implementação como dificuldade no manuseio das ferramentas digitais por profissionais antigos, caracterizada como resistência. Conclusão: A aplicabilidade das tecnologias na práxis da enfermagem contribui para a segurança do paciente face a favorecer o controle de eventos e o gerenciamento de riscos. Remete para a importância de capacitação e treinamentos dos profissionais para desenvolvimento de habilidades na utilização das ferramentas digitais. (AU)
Objective: Getting to know the perceptions from nurses on hospital environment about the technology implantation in the aid of patient's safety focused nursing. Methods: Descriptive, qualitative study made with eight nurses, responsible for risk management in hospitals. The Snowball technique was used to select the participants and the Skype platform used in the interviews, from March to April 2021. Results: The technology use was detected on the patient's electronic records through the Tasy program, which advanced to a net communication to facilitate checking, audits, pointers, management and event analysis. It was also detected by the use of bar codes in the identification of patients and control of medication dispensation and receiving. However, some limitations were found in the technology implementation, like elderly people having trouble using the digital tools, which is characterized by resistance. Conclusion: The technology applicability in the nursing practice contributes to the patient's safety to favor event control and risk management. It points to the importance of staff training and qualification to promote the ability of using digital tools. (AU)
Objetivo: Conocer las percepciones de las enfermeras del entorno hospitalario sobre la implementación de tecnologias enfocado en la seguridad del paciente. Métodos: Fue realizado un estudio descripctivo, cualitativo, con ocho enfermeras responsables de la gestión de riesgos en los hospitales. Se utilizó la tecnica snowball para elegir a los participantes y la plataforma skype para las entrevistas realizadas de marzo a abril de 2021. Resultados: Con el desarrollo de la tecnologia a través de historias clínicas eletrónicas, la inserción de un programa como Tasy, que avanzó a la comunicación em red, con el objetivo de facilitar verificaciones como auditorias, gestión y análisis en cualquier eventualidad. Tambien se dio a conocer para el uso de códigos de barras en la identificación de pacientes y en el control de la dispensación y recepción de medicamentos. Sin embargo, se presentaron limitaciones en la implementación, como la dificultad en el manejo de herramientas digitales por parte de algunos profesionales. Conclusión: La aplicabilidad de tecnologias en la enfermeria contribuye a la seguridad del paciente favoreciendo en el control de riesgos. Se refiere a la importancia de la calificación y formación de los profesionales, para desarrollar habilidades en el uso de herramientas digitales. (AU)
Technology , Patient Safety , Nursing Care
Objetivo: Identificar as evidências científicas acerca da efetividade e da segurança da hipodermóclise em comparação à via intravenosa, no processo de infusão de fluidos, para reidratação de crianças até 10 de idade, com leve a moderada desidratação, nos contextos hospitalares e domiciliares. Métodos: Revisão sistemática conduzida conforme as recomendações do Instituto Joanna Briggs®, com protocolo publicado e registrado. A busca foi realizada em cinco recursos informacionais diferentes (bases de dados, literatura cinzenta, referências dos estudos). Todo o processo de seleção foi conduzido por revisores independentes. Resultados: Foram identificados 1410 estudos e dois foram incluídos na análise. Devido a heterogeneidade dos estudos não foi possível a realização da meta-análise. Os desfechos analisados foram volume total de líquido infundido, alteração da desidratação conforme escala de Gorelick e peso, número de tentativas para inserção do cateter, e eventos adversos. Conclusão: Demonstra-se benefícios do uso da hipodermóclise como prática integrativa ao processo de infusão de fluidos em crianças, porém com baixo nível de evidência. Novas pesquisas com alta qualidade metodológica serão promissoras para sua implementação no cuidado ao paciente pediátrico. (AU)
Objective: To identify scientific evidence about the effectiveness and safety of hypodermoclysis compared to the intravenous route, in the fluid infusion process, for rehydration of children up to 10 years of age, with mild to moderate dehydration, in hospital and home settings. Methods: Systematic review conducted according to the recommendations of the Joanna Briggs® Institute, with a published and registered protocol. The search was performed in six databases, five gray literature databases, and references of the included studies. The entire selection process was conducted by independent reviewers. Results: 1410 studies were identified and two were included in the analysis. Due to the heterogeneity of the studies, it was not possible to carry out the meta-analysis. The outcomes analyzed were total volume of fluid infused, change in dehydration according to the Gorelick scale and weight, number of attempts to insert the catheter, and adverse events. Conclusion: Benefits of the use of hypodermoclysis as an integrative practice in the fluid infusion process in children are demonstrated, but with a low level of evidence. New research with high methodological quality will be promising for its implementation in pediatric patient care. (AU)
Objetivo: Identificar evidencia científica sobre la efectividad y seguridad de la hipodermoclisis en comparación con la vía intravenosa, en el proceso de infusión de líquidos, para la rehidratación de niños hasta los 10 años de edad, con deshidratación leve a moderada, en el ámbito hospitalario y domiciliario. Métodos: Revisión sistemática realizada de acuerdo con las recomendaciones del Instituto Joanna Briggs®, con protocolo publicado y registrado. La búsqueda se realizó en seis bases de datos, cinco bases de datos de literatura gris y referencias de los estudios incluidos. Todo el proceso de selección fue realizado por revisores independientes. Resultados: Se identificaron 1410 estudios y se incluyeron dos en el análisis. Debido a la heterogeneidad de los estudios, no fue posible realizar el metanálisis. Los resultados analizados fueron el volumen total de líquido infundido, el cambio en la deshidratación según la escala y el peso de Gorelick, el número de intentos de insertar el catéter y los eventos adversos. Conclusión: Se demuestran los beneficios del uso de la hipodermoclisis como práctica integradora en el proceso de infusión de líquidos en niños, pero con un bajo nivel de evidencia. Nuevas investigaciones con alta calidad metodológica serán prometedoras para su implementación en la atención del paciente pediátrico. (AU)
Review , Pediatric Nursing , Technology , Hypodermoclysis , Evidence-Based Nursing
This Viewpoint discusses the concept of CARE (compassion, assistance, respect, and empathy) as a way physicians can practice the art of medicine in the current era of care that increasingly incorporates predictive analytics and artificial intelligence.
Delivery of Health Care , Medicine , Patient-Centered Care , Physicians , Technology , Humans , Delivery of Health Care/methods , Education, Medical/methods , Education, Medical/standards , Empathy , Helping Behavior , Listening Effort , Medicine/methods , Patient-Centered Care/methods , Physician-Patient Relations , Physicians/psychology , Physicians/standards , Respect
This paper examines the development of the TECNO-ITINTEC museum, the first interactive science museum in Peru, which opened in 1979. The museum functioned under the Institute of Industrial Technology Research and Technical Standards (ITINTEC), a public institution established during the government of Velazco Alvarado. In 1975, Jorge Heraud became the president of ITINTEC's Board of Directors and proposed a science museum to inspire future generations of scientists. José Castro Mendívil joined as the exhibition's director and designer. Their motivation to open a museum coincided with the government's ideals for modernization and nationalization. This article analyzes various sources including newspapers, laws that regulated the institute, reports, and interviews with people involved in the museum to understand how science and politics intersected in TECNO-ITINTEC.
Museums , Politics , Humans , Peru , Government , Technology
Fostering equity in undergraduate science, technology, engineering, and mathematics (STEM) programs can be accomplished by incorporating learner-centered pedagogies, resulting in the closing of opportunity gaps (defined here as the difference in grades earned by minoritized and non-minoritized students). We assessed STEM courses that exhibit small and large opportunity gaps at a minority-serving, research-intensive university, and evaluated the degree to which their syllabi are learner-centered, according to a previously validated rubric. We specifically chose syllabi as they are often the first interaction students have with a course, establish expectations for course policies and practices, and serve as a proxy for the course environment. We found STEM courses with more learner-centered syllabi had smaller opportunity gaps. The syllabus rubric factor that most correlated with smaller gaps was Power and Control, which reflects Student's Role, Outside Resources, and Syllabus Focus. This work highlights the importance of course syllabi as a tool for instructors to create more inclusive classroom environments.
Curriculum , Engineering , Humans , Engineering/education , Technology/education , Students , Mathematics
Modern medicine has produced large genetic datasets of high dimensions through advanced gene sequencing technology, and processing these data is of great significance for clinical decision-making. Gene selection (GS) is an important data preprocessing technique that aims to select a subset of feature information to improve performance and reduce data dimensionality. This study proposes an improved wrapper GS method based on forensic-based investigation (FBI). The method introduces the search mechanism of the slime mould algorithm in the FBI to improve the original FBI; the newly proposed algorithm is named SMA_FBI; then GS is performed by converting the continuous optimizer to a binary version of the optimizer through a transfer function. In order to verify the superiority of SMA_FBI, experiments are first executed on the 30-function test set of CEC2017 and compared with 10 original algorithms and 10 state-of-the-art algorithms. The experimental results show that SMA_FBI is better than other algorithms in terms of finding the optimal solution, convergence speed, and robustness. In addition, BSMA_FBI (binary version of SMA_FBI) is compared with 8 binary algorithms on 18 high-dimensional genetic data from the UCI repository. The results indicate that BSMA_FBI is able to obtain high classification accuracy with fewer features selected in GS applications. Therefore, SMA_FBI is considered an optimization tool with great potential for dealing with global optimization problems, and its binary version, BSMA_FBI, can be used for GS tasks.
Algorithms , Physarum polycephalum , Clinical Decision-Making , Genetic Techniques , Technology
BACKGROUND: Injectable filler, a nonsurgical beauty method, has gained popularity in rejuvenating sagging skin. In this study, polydioxanone (PDO) was utilized as the main component of the ULTRACOL200 filler that helps stimulate collagenesis and provide skin radiant effects. The study aimed to evaluate and compare the effectiveness of ULTRACOL200 with other commercialized products in visually improving dermatological problems. METHODS: Herein, 31 participants aged between 20 and 59 years were enrolled in the study. 1 mL of the testing product, as well as the quantity for the compared groups was injected into each participants face side individually. Subsequently, skin texture and sunken volume of skin were measured using ANTERA 3D CS imaging technology at three periods: before the application, 4 weeks after the initial application, and 4 weeks after the 2nd application of ULTRACOL200. RESULTS: The final results of skin texture and wrinkle volume evaluation consistently demonstrated significant enhancement. Consequently, subjective questionnaires were provided to the participants to evaluate the efficacy of the testing product, illustrating satisfactory responses after the twice applications. CONCLUSION: The investigation has contributed substantially to the comprehension of a PDO-based filler (ULTRACOL200) for skin enhancement and provided profound insight for future clinical trials.
Nasolabial Fold , Skin Transplantation , Humans , Young Adult , Adult , Middle Aged , Skin/diagnostic imaging , Imaging, Three-Dimensional , Technology
BACKGROUND: Digital health technologies (dHTs) offer a unique opportunity to address some of the major challenges facing health care systems worldwide. However, the implementation of dHTs raises some concerns, such as the limited understanding of their real impact on health systems and people's well-being or the potential risks derived from their use. In this context, health technology assessment (HTA) is 1 of the main tools that health systems can use to appraise evidence and determine the value of a given dHT. Nevertheless, due to the nature of dHTs, experts highlight the need to reconsider the frameworks used in traditional HTA. OBJECTIVE: This scoping review (ScR) aimed to identify the methodological frameworks used worldwide for digital health technology assessment (dHTA); determine what domains are being considered; and generate, through a thematic analysis, a proposal for a methodological framework based on the most frequently described domains in the literature. METHODS: The ScR was performed in accordance with the guidelines established in the PRISMA-ScR guidelines. We searched 7 databases for peer reviews and gray literature published between January 2011 and December 2021. The retrieved studies were screened using Rayyan in a single-blind manner by 2 independent authors, and data were extracted using ATLAS.ti software. The same software was used for thematic analysis. RESULTS: The systematic search retrieved 3061 studies (n=2238, 73.1%, unique), of which 26 (0.8%) studies were included. From these, we identified 102 methodological frameworks designed for dHTA. These frameworks revealed great heterogeneity between them due to their different structures, approaches, and items to be considered in dHTA. In addition, we identified different wording used to refer to similar concepts. Through thematic analysis, we reduced this heterogeneity. In the first phase of the analysis, 176 provisional codes related to different assessment items emerged. In the second phase, these codes were clustered into 86 descriptive themes, which, in turn, were grouped in the third phase into 61 analytical themes and organized through a vertical hierarchy of 3 levels: level 1 formed by 13 domains, level 2 formed by 38 dimensions, and level 3 formed by 11 subdimensions. From these 61 analytical themes, we developed a proposal for a methodological framework for dHTA. CONCLUSIONS: There is a need to adapt the existing frameworks used for dHTA or create new ones to more comprehensively assess different kinds of dHTs. Through this ScR, we identified 26 studies including 102 methodological frameworks and tools for dHTA. The thematic analysis of those 26 studies led to the definition of 12 domains, 38 dimensions, and 11 subdimensions that should be considered in dHTA.
Digital Health , Technology
The development of modern omics technology has facilitated in-depth research on many disciplines in the field of medicine. For instance, the introduction of omics-related technology has facilitated research on the mechanism of formula's action and led to the innovative development of sophisticated pharmacological analysis methods. However, in general, the previous ideas are only limited to the application level, failing to integrate with the discipline connotation of formulaology. Furthermore, they are unable to fulfill their potential role in the future evolution of formulaology and steer comprehensive research on the clinical efficacy and safety of formulas. We should not forget our origins, which are compatible with other countries, and embrace the future. Therefore, this paper proposes the three essentials of "holism, macro, and practice" to investigate the future direction of high-quality development in fangjiomics.
Drugs, Chinese Herbal , Medicine , Medicine, Chinese Traditional , Technology , Treatment Outcome
This study aims to construct the element relationship and extension path of clinical evidence knowledge map with Chinese patent medicine, providing basic technical support for the formation and transformation of the evidence chain of Chinese patent medicine and providing collection, induction, and summary schemes for massive and disorganized clinical data. Based on the elements of evidence-based PICOS, the conventional construction methods of knowledge graph were collected and summarized. Firstly, the data entities related to Chinese patent medicine were classified, and entity linking was performed(disambiguation). Secondly, the study associated and classified the attribute information of the data entity. Finally, the logical relationship between entities was constructed, and then the element relationship and extension path of the knowledge map conforming to the characteristics of clinical evidence of Chinese patent medicine were summarized. The construction of the clinical evidence knowledge map of Chinese patent medicine was mainly based on process design and logical structure, and the element relationship of the knowledge map was expressed according to the PICOS principle and evidence level. The extension path crossed three levels(model layer, data layer application, and new evidence application), and the study gradually explored the path from disease, core evaluation indicators, Chinese patent medicine, core prescriptions, syndrome and treatment rules, and medical case comparison(evolution law) to new drug research and development. In this study, the top-level design of the construction of the clinical evidence knowledge map of Chinese patent medicine has been clarified, but it still needs the joint efforts of interdisciplinary disciplines. With the continuous improvement of the map construction technology in line with the characteristics of TCM, the study can provide necessary basic technical support and reference for the development of the TCM discipline.
Drugs, Chinese Herbal , Drugs, Chinese Herbal/therapeutic use , Medicine, Chinese Traditional , Nonprescription Drugs/therapeutic use , Technology , Data Mining/methods
A full account of the preceded early research tribulation that led to the development of the first visible light activated composite resin and the first visible light activator source is documented. The events took place over four years since early 1974 when a raw industrial composite resin that was radiolucent, stiff paste, universal optically opaque white color, polymerized by exposure to a prototype visible light for 120 seconds was given to developed. Four years later, the developed restorative composite resin ended up as a radiopaque, optically translucent, universal color with an additional three shades that possessed the biologic, esthetic, mechanical and physical characteristics with proven efficacy be used for esthetic zone. This conservative account of early development of a technology that must count as one of a small number of inventions during the seventies, over the years has revolutionized restorative dental practice. We were privileged and very lucky to be associated with developmental stages, stumbling blocks, and final success of the first LC Composite resin that ignited the thought process worldwide and laid the foundation for modern esthetic restoratives practiced today.
Amines , Composite Resins , Esthetics, Dental , Dentistry , Technology
Fetal cardiac MRI using Doppler US gating is an emerging technique to support prenatal diagnosis of congenital heart disease and other cardiovascular abnormalities. Analogous to postnatal electrocardiographically gated cardiac MRI, this technique enables directly gated MRI of the fetal heart throughout the cardiac cycle, allowing for immediate data reconstruction and review of image quality. This review outlines the technical principles and challenges of cardiac MRI with Doppler US gating, such as loss of gating signal due to fetal movement. A practical workflow of patient preparation for the use of Doppler US-gated fetal cardiac MRI in clinical routine is provided. Currently applied MRI sequences (ie, cine or four-dimensional flow imaging), with special consideration of technical adaptations to the fetal heart, are summarized. The authors provide a literature review on the clinical benefits of Doppler US-gated fetal cardiac MRI for gaining additional diagnostic information on cardiovascular malformations and fetal hemodynamics. Finally, future perspectives of Doppler US-gated fetal cardiac MRI and further technical developments to reduce acquisition times and eliminate sources of artifacts are discussed. Keywords: MR Fetal, Ultrasound Doppler, Cardiac, Heart, Congenital, Obstetrics, Fetus Supplemental material is available for this article. © RSNA, 2024.
Magnetic Resonance Imaging , Prenatal Care , Female , Pregnancy , Humans , Radiography , Fetal Heart/diagnostic imaging , Technology
The structural identification and efficient synthesis of bioactive 2,6-dideoxyglycosides are daunting challenges. Here, we report the total synthesis and structural revision of a series of 2,6-dideoxyglycosides from folk medicinal plants Ecdysanthera rosea and Chonemorpha megacalyx, which feature pregnane steroidal aglycones bearing an 18,20-lactone and glycans consisting of 2,6-dideoxy-3-O-methyl-ß-pyranose residues, including ecdysosides A, B, and F and ecdysantheroside A. All the eight possible 2,6-dideoxy-3-O-methyl-ß-pyranoside stereoisomers (of the proposed ecdysantheroside A) have been synthesized that testify the effective gold(I)-catalyzed glycosylation methods for the synthesis of various 2-deoxy-ß-pyranosidic linkages and lays a foundation via nuclear magnetic resonance data mapping to identify these sugar units which occur promiscuously in the present and other natural glycosides. Moreover, some synthetic natural compounds and their isomers have shown promising anticancer, immunosuppressive, anti-inflammatory, and anti-Zika virus activities.
Gold , Magnetic Resonance Imaging , Glycosylation , Technology , Magnetic Resonance Spectroscopy
Due to the global population increase and the recovery of agricultural demand after the COVID-19 pandemic, the importance of agricultural automation and autonomous agricultural vehicles is growing. Fallen person detection is critical to preventing fatal accidents during autonomous agricultural vehicle operations. However, there is a challenge due to the relatively limited dataset for fallen persons in off-road environments compared to on-road pedestrian datasets. To enhance the generalization performance of fallen person detection off-road using object detection technology, data augmentation is necessary. This paper proposes a data augmentation technique called Automated Region of Interest Copy-Paste (ARCP) to address the issue of data scarcity. The technique involves copying real fallen person objects obtained from public source datasets and then pasting the objects onto a background off-road dataset. Segmentation annotations for these objects are generated using YOLOv8x-seg and Grounded-Segment-Anything, respectively. The proposed algorithm is then applied to automatically produce augmented data based on the generated segmentation annotations. The technique encompasses segmentation annotation generation, Intersection over Union-based segment setting, and Region of Interest configuration. When the ARCP technique is applied, significant improvements in detection accuracy are observed for two state-of-the-art object detectors: anchor-based YOLOv7x and anchor-free YOLOv8x, showing an increase of 17.8% (from 77.8% to 95.6%) and 12.4% (from 83.8% to 96.2%), respectively. This suggests high applicability for addressing the challenges of limited datasets in off-road environments and is expected to have a significant impact on the advancement of object detection technology in the agricultural industry.
Agriculture , Pandemics , Humans , Technology , Algorithms , Automation
