bluuebunny/crossref_metadata_2025 huggingface dataset:
Is the frontal sinus immune to carcinoma? A retrospective study and review of the literature
Authors: Rifai Mohamed , Zaki Maha , Abdelmalek M. E.
Published: August 2023

Background

Frontal sinus carcinoma is commonly seen as an extension of the ethmoid sinus, overlying skin, or lacrimal gland. The existence of this disease has been unclear. We aimed to describe the occurrence of primary frontal sinus carcinoma.

Methods

We conducted a systematic literature review and a retrospective review of the medical records at our institution in the past 10 years.

Results

Sixty-four articles were included in the literature review. Most frontal sinus carcinomas involved surrounding structures as the sphenoid or ethmoid sinus, and a primary origin in the frontal sinus could not be confirmed. No cases of primary frontal sinus carcinoma were identified at our hospital.

Conclusion

Isolated primary frontal sinus carcinoma, if exists, is very rare. There is uncertainty regarding the primary origin of frontal sinus carcinoma in most studies. The frontal sinus seems to be immune from primary carcinoma. Further studies are needed to explain such immunity.
Consensus evidence-based recommendations for transition of care for adolescents with juvenile idiopathic arthritis: meeting patients’, parents’, and rheumatologists’ perspectives
Authors: Miedany Yasser El , Abu-Zaid Mohammed Hassan , Eissa Mervat , Hassan Waleed A. , Mortada Mohamed , Tabra Samar abd Alhamed , Mohamed Sally S. , Maher Sheren Esam , Gaafary Maha El , Medhat Basma M. , Mosa Doaa Mosad , Fouad Nermeen Ahmed , Amer Youmna Ahmed , Nasef Samah Ismail , Shalaby Radwa H. , Adel Yasmin , Elkhalek Reham Abd , Mahgoub Marwa Yahia , Lotfy Hala M.
Published: August 2023

Background

Transition of care means the process of educating and empowering adolescents and young adults to take an active role in their own healthcare, develop decision-making skills, and eventually transition from paediatric to adult healthcare providers. Most people do not switch doctors until they are young adults, but it can be beneficial to start preparing children earlier. We aimed to develop a specific toolkit tailored to paediatric and adult rheumatologists to assist them in transitioning of care of young people with juvenile onset rheumatic musculoskeletal diseases from the paediatric to adult rheumatology care.

Results

The expert panel was confined to an online survey (n = 18), all the experts completed the two rounds. At the conclusion of round 2, a total of 10 points were gathered. The range of respondents (ranks 7–9) who agreed with the recommendations was 88.9 to 100%. All 10 clinical standards identified by the scientific committee were written in the same way. Based on the answers to the structured key questions and the literature review, a structured template was developed presenting transition of care integrated pathway.

Conclusion

The developed rheumatology-specific guideline offers adolescents and young adults a focussed, multidisciplinary transition of care approach with equity of access, quality of care and flexibility and set up standards for transitional care for young adults with juvenile rheumatological diseases.
MilCanEpi: Increased Capability for Cancer Care Research in the Department of Defense
Authors: Eaglehouse Yvonne L. , Shriver Craig D. , Lin Jie , Bytnar Julie A. , Darmon Sarah , McGlynn Katherine A. , Zhu Kangmin
Published: August 2023

The Military Health System (MHS) of the US Department of Defense (DoD) provides comprehensive medical care to over nine million beneficiaries, including active-duty members, reservists, activated National Guard, military retirees, and their family members. The MHS generates an extensive database containing administrative claims and medical encounter data, while the DoD also maintains a cancer registry that collects information about the occurrence of cancer among its beneficiaries who receive care at military treatment facilities. Collating data from the two sources diminishes the limitations of using registry or medical claims data alone for cancer research and extends their usage. To facilitate cancer research using the unique military health resources, a computer interface linking the two databases has been developed, called Military Cancer Epidemiology, or MilCanEpi. The intent of this article is to provide an overview of the MilCanEpi data system, describing its components, structure, potential uses, and limitations.
Integrative Oncology Care of Symptoms of Anxiety and Depression in Adults With Cancer: SIO-ASCO Guideline Summary and Q&A
Authors: Carlson Linda E. , Ismaila Nofisat , Addington Elizabeth L. , Asher Gary N. , Bradt Joke , Mehta Ashwin , Rowland Julia H.
Published: August 2023

This SIO-ASCO guideline Q&A provides guidance on integrative oncology care of symptoms of anxiety and depression in adult patients with cancer
Politics in the Crevices
Authors: El-Kazaz Sarah
Published: August 2023

In Politics in the Crevices, Sarah El-Kazaz takes readers into the world of urban planning and design practices in Istanbul and Cairo. In this transnational ethnography of neighborhoods undergoing contested rapid transformations, she reveals how the battle for housing has shifted away from traditional political arenas onto private crevices of the city. She outlines how multiple actors—from highly capitalized international NGOs and corporations to city dwellers, bureaucrats, and planning experts—use careful urban design to empower conflicting agendas, whether manipulating property markets to protect affordable housing or corner luxury real estate. El-Kazaz shows that such contemporary politicizations of urban design stem from unresolved struggles at the heart of messy transitions from the welfare state to neoliberalism, which have shifted the politics of redistribution from contested political arenas to design practices operating within market logics, ultimately relocating political struggles onto the city's most intimate crevices. In so doing, she raises critical questions about the role of market reforms in redistributing resources and challenges readers to rethink neoliberalism and the fundamental ways it shapes cities and polities.
A Year at the Forefront of Gliding Locomotion
Authors: Khandelwal Pranav C. , Zakaria Mohamed A. , Socha John J.
Published: August 2023

This review highlights the largely understudied behavior of gliding locomotion, which is exhibited by a diverse range of animals spanning vertebrates and invertebrates, in air and in water. The insights in the literature gained from January 2022 to December 2022 continue to challenge the previously held notion of gliding as a relatively simple form of locomotion. Using advances in field/lab data collection and computation, the highlighted studies cover gliding in animals including seabirds, flying lizards, flying snakes, geckos, dragonflies, damselflies, and dolphins. Altogether, these studies present gliding as a sophisticated behavior resulting from the interdependent aspects of morphology, sensing, environment, and likely selective pressures. This review uses these insights as inspiration to encourage researchers to revisit gliding locomotion, both in the animal's natural habitat and in the laboratory, and to investigate questions spanning gliding biomechanics, ecology, sensing, and the evolution of animal flight.
Glucose oxidation drives trunk neural crest cell development and fate
Authors: Nekooie Marnany Nioosha , Fodil Redouane , Féréol Sophie , Dady Alwyn , Depp Marine , Relaix Frederic , Motterlini Roberto , Foresti Roberta , Duband Jean-Loup , Dufour Sylvie
Published: August 2023

Bioenergetic metabolism is a key regulator of cellular function and signaling, but how it can instruct the behavior of cells and their fate during embryonic development remains largely unknown. Here, we investigated the role of glucose metabolism in the development of avian trunk neural crest cells (NCCs), a migratory stem cell population of the vertebrate embryo. We uncovered that trunk NCCs display glucose oxidation as a prominent metabolic phenotype, in contrast to what is seen for cranial NCCs, which instead rely on aerobic glycolysis. In addition, only one pathway downstream of glucose uptake is not sufficient for trunk NCC development. Indeed, glycolysis, mitochondrial respiration and the pentose phosphate pathway are all mobilized and integrated for the coordinated execution of diverse cellular programs, epithelial-to-mesenchymal transition, adhesion, locomotion, proliferation and differentiation, through regulation of specific gene expression. In the absence of glucose, the OXPHOS pathway fueled by pyruvate failed to promote trunk NCC adaptation to environmental stiffness, stemness maintenance and fate-decision making. These findings highlight the need for trunk NCCs to make the most of the glucose pathway potential to meet the high metabolic demands appropriate for their development.
Is there a localized role for translational quality control?
Authors: Meydan Sezen , Guydosh Nicholas R.
Published: August 2023

It is known that mRNAs and the machinery that translates them are not uniformly distributed throughout the cytoplasm. As a result, the expression of some genes is localized to particular parts of the cell and this makes it possible to carry out important activities, such as growth and signaling, in three-dimensional space. However, the functions of localized gene expression are not fully understood, and the underlying mechanisms that enable localized expression have not been determined in many cases. One consideration that could help in addressing these challenges is the role of quality control (QC) mechanisms that monitor translating ribosomes. On a global level, QC pathways are critical for detecting aberrant translation events, such as a ribosome that stalls while translating, and responding by activating stress pathways and resolving problematic ribosomes and mRNAs at the molecular level. However, it is unclear how these pathways, even when uniformly active throughout the cell, affect local translation. Importantly, some QC pathways have themselves been reported to be enriched in the proximity of particular organelles, but the extent of such localized activity remains largely unknown. Here, we describe the major QC pathways and review studies that have begun to explore their roles in localized translation. Given the limited data in this area, we also pose broad questions about the possibilities and limitations for how QC pathways could facilitate localized gene expression in the cell with the goal of offering ideas for future experimentation.
Como trazer maior efetividade para a educação corporativa?
Authors: Romani-Dias Marcello , Lins Pereira Filho João
Published: August 2023

Em um ambiente competitivo cada vez mais acirrado e dinâmico, há a necessidade de programas capazes de proporcionar aos participantes o alcance de importantes resultados para seus negócios. A abordagem de aprendizado em ação apresenta-se, então, como uma alternativa inovadora e eficaz.
Vietnam national competency standards for midwifery: A Delphi study
Authors: Thanh Le Tung , Tuan Truong Anh , Van Vu Thanh , Viet Tran Ha Thi , Thanh Pham Huong Thi , Thanh Nguyen Huong Thi , Mai Anh Thi Lan
Published: August 2023

Background: After nearly a decade, Vietnam’s basic midwifery competency standards need to be updated to effectively implement midwives, enhance the quality of midwifery human resources to meet the requirements of integration of countries in the region and around the world. This study aims to develop the competency standards for midwifery in Vietnam by using a Delphi process. Methods: The draft midwifery competency standard was initially developed based on a literature review. Midwives and professionals working with midwives completed a two-round Delphi survey to evaluate the relevance of standards of competence on a four-point Likert scale. The criteria with consensus of under 80% were revised and included in the second round. 75 participants were in the first round and 72 participants were in the second round. Phase 3 was led by the Ministry of Health to finalize the consensus on the midwifery competency standards in Vietnam. Results: The research results indicated that midwifery competency was mostly rated as quite relevant or higher (over 80%). Some standards were removed, and some were included in the second round of the Delphi process. The final competency standards were issued with 4 areas (midwifery professional practice; care management; midwifery management; professional development), 11 standards and 44 criteria; along with the general skills of midwifery. Conclusions: The study developed a midwifery competency standard in Vietnam. These competency standards are consistent with the perceptions of the International Confederation of Midwives and the domestic midwifery context. The higher education institutions, employers, policy makers and midwives themselves benefit from this developed midwifery competency standards. Future research needs to be conducted to validate midwifery competency standards in clinical settings for further responses.
Armored heart as an image of constrictive pericarditis - a review of the literature
Authors: Wokurka Wojciech , Węgrzyniak Agata , Drobek Dominik , Winiarz Aleksandra , Szlendak Paula , Toś Katarzyna , Wojtala Kacper , Turek Michał , Wąsala Katarzyna , Grosman Sylwia
Published: August 2023

Introduction: Pericarditis is diagnosed among 5% patients hospitalized due to chest pain. It is included in pericardial syndromes together with constrictive pericarditis, pericardial effusion and cardiac tamponade. There are many documented etiological factors leading to pericarditis, most commonly divided into infectious and non-infectious ones. The disease typically presents with chest pain, ECG changes, pericardial rub and pericardial effusion. The diagnosis is made with the results of parameters found in patients’ blood and imaging tests. Treatment is usually based on pharmacological therapy, although in some cases the pericardial surgery is necessary. One of the characteristic changes in imaging diagnostics in patients with pericarditis is thickening of pericardial layers, the so-called armored heart.

Aim of the study: The aim of the study was to find clear diagnostic criteria for armored heart as a unique type of constrictive pericarditis.

Materials and methods: Articles available in the databases of medical publications: PubMed, Google Scholar, SCOPUS were analysed using the search phrase: armored heart* AND (pericarditis OR acute pericarditis).

Results: The search phrase was included in 18 records. After the initial verification, repetitive, unavailable and foreign papers were rejected. Finally, 3 manuscripts were included in further analyses. No clear criteria were found to classify constrictive pericarditis as an armored heart.

Conclusions: Armored heart is a 'subtype' of constrictive pericarditis. It seems that this term is used subjectively, based on imaging studies.
Hearing Loss in Adults - Silent Epidemic
Authors: Magda Inga , Gaik Magdalena , Uram Ewa , Bogacz Rafał , Osuch Magdalena , Woźniak Justyna , Womperski Karol
Published: August 2023

Introduction: Hearing loss affects 15% of Poles, i.e. more than 5.7 million people. Despite this, it is still underdiagnosed and insufficiently often treated. As its incidence increases significantly with age, this issue will only affect more people with a rapidly ageing population. Hearing loss has a number of different negative consequences, significantly reducing patients' quality of life, but it is also a problem for society as a whole.Aim of the study: Review of current knowledge on hearing loss, detailing pathophysiology, prevention, screening, diagnosis and treatment.Methods and materials: A review of chosen literature in the PubMed database, Scopus, and Google Scholar using the keywords of “hearing loss”, „ conductive hearing loss”, “sensorineural hearing loss”, “hearing loss in adults”, “diagnosing hearing loss” and „hearing loss treatment”.

Results: Hearing loss is categorized as conductive, sensorineural or mixed, with the most common being presbyacusis. Although it is a multi-factorial condition, reducing exposure to excessive noise is most important. There is no consensus on screening in adults. Various diagnostic methods exist with tonal audiometry being the most important. Conductive hearing loss is potentially amendable surgically, while in case of sensorineural hearing loss, hearing aids are the most common treatment method. Satisfactory results in the treatment of severe hearing loss and deafness can be achieved with cochlear implants. Recent research offers hope for the future of hearing loss treatment.

Conclusions: Timely diagnosis, which can be performed with relatively simple tools, is of the utmost importance. There are a number of treatment methods, which must be individually selected with the patient's participation, that yield good results.
The ketogenic diet in schizophrenia
Authors: Ćwiek Maciej , Bigdoń Anna Maria , Gorczyca  Przemysław , Góra Mateusz , Hunek Adrian Krzysztof , Kozłowska Martyna , Kreft Rafał , Sydor Patryk , Wartacz Marcel , Woźniak Aleksander
Published: August 2023

Schizophrenia is a mental illness that manifests itself in the second or third decade of life with no coherent aspect. The primary pharmacological therapy is antipsychotic medication, which mostly work by suppressing the activity of dopamine. Unluckily, many of schizophrenic patients experience hardship from severe positive or negative symptoms that can not be completely treated with available treatment. Last theory of schizophrenia mechanism contain systemic and central proinflammatory process, in brain glutamatergic neurotransmission and impaired systemic and cerebral energy metabolism. Ketogenic diet is firm controlled high-fat, low protein, low-carbohydrate diet, with lipid to non lipid ratio 4:1. Main mechanism is to cause ketosis. The situation in which ketones bodies are used as a substrate to generate energy in the organism. It could be that a ketogenic diet could help to compensate for the imbalance of GABA levels in schizophrenic brain. The ketogenic diet as an addition to drug treatment, hopefully may offer therapeutic opportunities to better result of the disease concerning symptomatology and preventing the gain of weight, due to some medication side effects or comorbidities.
Branched-Chain Amino Acids (BCAAs) - oral supplementation and its effects in resistance training and treatment
Authors: Bieńkowski Borys , Feja Krzysztof , Łuczak Ewa , Jachowicz Krzysztof , Petryla Piotr , Suwała Zuzanna , Marchewka Urszula , Ostafin Kamil , Rektor Natalia , Edyko Krzysztof
Published: August 2023

Introduction: Branched - chain amino acids (BCAAs) are essential components of proteins that play a crucial role in regulating numerous physiological processes in the human body. This article provides a comprehensive analysis of scientific research on BCAAs, including their involvement in metabolism, protein biosynthesis, and the regulation of anabolic processes. We reviewed the supplementation of BCAAs and its impact on sports performance, body composition, and the therapeutic applications of BCAAs

Materials and methods: This study is based on medical articles collected from the PubMed database spanning the years 2011-2023. The research was conducted through the analysis of keywords such as "BCAA supplementation", "BCAA metabolism", and "BCAA treatment".

Results: The physiology of BCAAs is well understood. The use of oral supplements containing BCAAs does not have a positive impact on muscle hypertrophy, muscle strength, and post-workout muscle soreness in resistance training. However, branched chain amino acids may serve as a safe and effective therapeutic approach in the treatment of liver cirrhosis.
Umpatan sebagai Penanda Relasi Keakraban Antar Mahasiswa: Analisis Berbasis Bentuk dan Gender
Authors: Salsabilla Rika , Arimi Sailal
Published: August 2023

Swear words using is considered low-value and inappropriate behavior in a normative society. There are differences between men and women in in the using of swear words. The purpose of this study was to identify the swearing lexicon along with the lingual forms and its references used by each gender. Also, to find out the frequency of its use and what factors trigger the use of swear words from each gender. Quantitative and qualitative approaches were used with data collection techniques through a questionnaire survey conducted on 115 students. The results of the study found that the choice of lexicon of swear words from the male gender is wider and more varied. Swearing is identified based on morphological and syntactic lingual forms. References of male gender come from groups of objects, animals, body parts, professions, situations, and activities. Meanwhile, references of female gender are more polite although they still seem rude, namely coming from groups of words such as animals, circumstances, activities, and objects. The frequency of use of both genders shows that the intensity of swear words using is rarely used.
Men's health: understanding the disparities, and solving them
Authors: Peate Ian
Published: August 2023

Ian Peate looks at how primary care could be key to a much-needed men's health strategy
Deep Learning Towards Intrusion Detection System (IDS): Applications, Challenges and Opportunities
Authors: Ravindran Selvam , Sarveshwaran Velliangiri
Published: August 2023

With the growth of numerous technological areas, including sensors, embedded computing, broadband Internet access, wireless communications, distributed services, automatic identification, and tracking, the potential for integrating smart objects into our daily activities through the Internet has increased. The Internet of Things (IoT) is the confluence of the Internet and intelligent objects that can converse and cooperate with one another. IoT is a brand-new example that unifies Cyberspace with actual physical objects from various areas, including, business processes, human health, home automation, and environmental monitoring. It intensifies the use of Internet-connected strategies in our regular lives, carrying with it several advantages as well as security challenges. Intrusion Detection Systems (IDS) have been a crucial device for the defence of systems and material schemes for more than 20 years. However, applying traditional IDS techniques was challenging due to the IoT’s inimitable features, like resource-constrained devices and particular protocol stacks and standards. As a result, this survey will focus on various Deep Learning (DL)-based intrusion detection techniques. This study makes use of 50 research papers that focused on different techniques, and a review of studies that used those techniques was given. This research enables categorizing the methods employed for intrusion detection in IoT based on Convolutional Neural Network (CNN)-based methods, Deep Neural Network (DNN)-based methods, Optimization-based methods, and so on. Moreover, the categorization of approaches, published year, the dataset used, tools used, and the performance metrics are measured for intrusion detection in IoT. On the basis of the software used for implementation, performance achievement, and other factors, a thorough analysis was conducted. The conclusion identifies the research gaps and issues in a way that makes it clear why should create an efficient method for enabling efficient enhancement.
An Optimal Resource Allocation in 5G Environment Using Novel Deep Learning Approach
Authors: Pamba Raja Varma , Bhandari Rahul , Asha A. , Bist Ankur Singh
Published: August 2023

In recent times, the advancement in network devices has focused entirely on the miniaturization of services that should ensure better connectivity between them via fifth generation (5G) technology. The 5G network communication aims to improve Quality of Service (QoS). However, the allocation of resources is a core problem that increases the complexity of packet scheduling. In this paper, a resource allocation model is developed using a novel deep learning algorithm for optimal resource allocation. The novel deep learning is formulated using the constraints associated with optimal radio resource allocation. The objective function design aims at reducing the system delay. The study predicts the traffic in a complex environment and allocates resources accordingly. The simulation was conducted to test the scheduling efficacy and the results showed an improved rate of allocation than the other methods.
Access and Affiliation: A Biography of Digital Melville
Authors: Bryant John
Published: August 2023

Abstract: This biography of the Melville Electronic Library recounts its growth in the context of the development of the intellectual potentials and technological challenges of digital humanities scholarship and reflects on the prospect of an affiliation of Melville projects, collectively called Digital Melville. MEL's fluid-text editorial approach is designed to give readers fuller access to interpretable versions of Melville's works. its proposed interactive visualization of Melville's lost copy or "third Moby-Dick " exemplifies how readers may navigate revisions to Melville's text otherwise obscured, dismissed, or "disappeared" in traditional editing. Digital technology addresses such problems of denied access and builds multi-generational, international communities, evident in MEL's interactive editing and mapping tools TextLab and Itinerary. By embracing "adaptive" as well as authorial and editorial revision, MEL's more comprehensive fluid-text approach also enables material-based contextualization of Melville in adaptation and translation. MEL's three-part structure—Archive, Editions, Projects—invites readers to use the archived and edited materials to generate new scholarship or linked sites. Its current affiliation with the University of Chicago's CEDAR initiative and its transition to Chicago's OCHRE database system is a step toward enhanced interoperability, and may inspire other digital projects, big and small, to join the emergent Digital Melville community.
Temporalidades en las figuraciones de lo colonial. La escritura de lo político por un campesino colombiano de la década de 1930
Authors: Morera Aparicio Esteban
Published: August 2023

Resumen: En el presente artículo me encargaré de mostrar cómo se construyó la colonialidad desde las subjetividades de los sectores populares de la primera mitad del siglo veinte latinoamericano, proponiendo una alternativa epistemológica de comprensión de lo político a través de las temporalidades. En este marco, la colonialidad, más que referirse a un periodo histórico con un significado fijo, es un campo semántico problemático, que se puede comprender como una figuración en la cual convergen diferentes temporalidades y en cuya definición se encuentra la lucha hegemónica de la comunicación política. Puntualmente me enfocaré el caso de un campesino colombiano de la década de 1930 y su intercambio epistolar con el líder político Jorge Eliécer Gaitán. A partir de este caso, se podrá apreciar cómo, en la medida que los actores históricos participan en la negociación que presupone lo político, van construyendo sistemas de inteligibilidad que dan cuenta de cómo estos entienden las diferentes relaciones sociales en las cuales se encuentran inmersos. En esta lucha hegemónica comprendida como una disputa de temporalidades, la política no es solo la pugna por el poder desarrollada por las élites políticas, sino también abre paso para entender cómo los sectores subalternos intentan insertar sus horizontes sociales, al tiempo que posibilitan la reconstrucción de relatos históricos alternativos.
Rentabilizando la identidad desde la autorreferencialidad: El caso de la crónica mestiza novohispana
Authors: Costilla Martínez Héctor
Published: August 2023

Resumen: Dentro de las Crónicas de indias, uno de los recursos textuales más efectivos para buscar algún beneficio particular ha sido la recurrencia al "yo" como instancia narrativa. Este fenómeno autorreferencial manifiesto en la crónica desarrollada a partir del siglo dieciséis desvela las intenciones de los sujetos detrás de la escritura, vinculadas a cuestiones de posición, de control, de negociación y de reivindicación de derechos —entre otras— apelando a acciones pasadas para generar algún tipo de ganancia en su presente histórico. En este trabajo me interesa identificar cómo el mencionado fenómeno autorreferencial se problematiza en la obra de dos cronistas novohispanos: hernando alvarado tezozómoc, descendiente del linaje mexica, y Domingo Chimalpáhin, descendiente de la nobleza chalca. Me enfocaré en la Crónica mexicáyotl , original de tezozómoc, pero de la cual actualmente se tiene acceso a una copia realizada por Chimalpáhin, y en varias de las Relaciones y el Diario escritas por este último. El objetivo principal es analizar cómo se valora la figura de cada uno en la construcción que de sí mismos se hace a través de su escritura mestiza, y de señalar cuál es la identidad que resulta mejor rentabilizada a partir de su presencia e injerencia en la creación de los textos mencionados.
La colonialidad de la rentabilidad libidinal pigmentocrática de la descendencia femenina en La albina del dinero (2017) de Trifonia Melibea Obono
Authors: Gallo González Danae
Published: August 2023

Resumen: Este artículo se propone analizar La albina del dinero (2017) de la escritora guineoecuatoriana Trifonia Melibea Obono (Guinea Ecuatorial, 1982). Se trata de una novela ambientada en el boom del petróleo en el Malabo contemporáneo, en Guinea Ecuatorial, capital de la que también lo fuera durante la colonización española bajo el nombre de Santa Isabel. Por un lado, se examinará cómo se articula el sistema de filiación de la comunidad Fang de Guinea Ecuatorial en la novela alrededor de la rentabilidad del valor libidinal de la descendencia femenina, que se mide a través de una escala pigmentocrática. Se desentrañará la colonialidad del saber que se esconde en esta empresa de clasificación y la colonialidad del poder que ilustran las divisiones del trabajo a las que recurren la mayoría de los guineoecuatorianos que se ven relegados de la industria de petróleo. Por otro, se analizará la ambivalencia relacional del país con la antigua metrópoli que pone en escena la novela y que revela tanto las profundas raíces de la colonialidad del poder, del saber y del ser, como la posibilidad de ensayar nuevas formas de pensar y habitar el mundo en base a las propuestas de Quijano, Mignolo y Mbembe.
Taxonomías selváticas de la percepción en Las tres mitades de Ino Moxo y otros brujos de la Amazonía de César Calvo (1981)
Authors: Grimaldi Susanne
Published: August 2023

Resumen: La valoración de sistemas epistemológicos "otros" y la descolonización del pensamiento son asuntos claves desde los estudios pos- y descoloniales del siglo veinte y veintiuno. En la novela peruana Las tres mitades de Ino Moxo y otros brujos de la Amazonía de César Calvo (1981) se procesan conceptos y técnicas de medir perspectivas y calibrar distancias in- y exteriores, entendibles como una taxonomía selvática de percepciones y seres. Este artículo explora la ciencia producida en esta novela para invertir el cuento logocéntrico de una inferioridad epistémica.
Le Clézio's "Monster Island:" The Derridean "Monstrosity of the Unrecognizable"
Authors: Moser Keith
Published: August 2023

Abstract: This essay delves into monster theory and Derrida's late environmental philosophy in order to probe the philosophical, linguistic, and ethical implications of the metaphor of other-than-human monstrosity in Le Clézio's Voyages de l'autre côté . In this early narrative, the symbolism of the "monster island" deconstructs the oppositional thinking undergirding our representations of the world and our place in it. Overcoming his initial fright when confronted with an entity that is unrepresentable within our dichotomous thought systems, the unnamed old sailor begins to communicate with this "wholly other" which he realizes is a "fellow" semiotic, sentient being. This epiphany leads to a radical biocentric paradigm shift resulting in the creation of a new cognitive structure that is more capable of understanding the cosmos and our relationship to it in non-dualistic terms.
High-sensitivity fiber optic Fabry–Perot ultrasonic sensor based on a grooved silicon diaphragm for partial discharge detection
Authors: Zhang Lina , Huang Yi , Niu Xiling , Wang Liangjie , Hu Chengyong , Deng Chuanlu , Wu Peng , Lu Yuncai , Li Qun , Dong Yanhua , Zhang Qi , Zhang Xiaobei , Wang Tingyun
Published: August 2023

An extrinsic fiber optic Fabry–Perot interferometric (EFPI) ultrasonic sensor based on a grooved silicon diaphragm for partial discharge (PD) detection has been proposed. The size of the groove is determined by finite element simulation, which allows the resonant frequency of the sensor to meet the requirements of PD ultrasonic detection and improves the sensitivity of the sensor by 5.07 times compared with that based on a traditional circular diaphragm. The microelectro–mechanical system process is used to fabricate the diaphragm on a silicon-on-insulator wafer, and the prepared diaphragm has a grooved section with a diameter of 829.34 µm and a thickness of only 2.09 µm. At its resonant frequency of 61.5 kHz, the acoustic pressure sensitivity of the sensor is 172.42 mV/Pa. The ultrasonic signal detection capability of the sensor is verified in the PD experiment. Furthermore, the characteristics of the corona discharge are successfully manifested based on the ultrasonic waves detected by the EFPI sensor. It is demonstrated that the proposed sensor is suitable for PD detection due to its high sensitivity, simple production process, and good resistance to environmental interference.
Multi-longitudinal mode laser beat-frequency optical fiber vibration sensing system based on an FM radio module
Authors: Wang Xu , Wang Shanjin , Zhou Ziqiang , Wang Fang
Published: August 2023

A multi-longitudinal mode (MLM) laser beat-frequency optical fiber vibration sensor using a frequency modulation (FM) radio integrated circuit module as the FM demodulation scheme is presented and demonstrated. To the best of our knowledge, this is the first case where a fiber-optic sensing system is combined with an FM radio module, and dynamic sensing is well achieved. As the carrier of the vibration source, the beat-frequency signal (BFS) generated by the MLM laser is transmitted to the FM radio module for FM and demodulation. The experimental results show that the system can successfully detect the vibration signal in the frequency range of 20 Hz to 18 kHz and accurately demodulate the waveform and amplitude of the vibration signal source. The minimum shape variable detected by the system is 20.67 nm, based on the performance of the commercial FM radio module itself, which can effectively solve the problem of detecting tiny vibration. The idea of the optical fiber vibration sensing system is extremely innovative, with high sensitivity, high signal-to-noise ratio (SNR), good stability, and strong resistance to electromagnetic interference.
Design of a real-time orientation sensor based on atmospheric polarization light
Authors: Xu Jinfeng , Li Haozhe , Lv Wenhong , Kong Fang , Li Xiaoqing , Li Guoqing , Li Qi , Guo Yinjing
Published: August 2023

In recent years, biomimetic polarization navigation has become a research hotspot in navigation fields because of its autonomy and concealment. Existing point-source polarization navigation sensors mainly use a logarithmic amplifier as the arithmetic unit to obtain polarization information. However, these sensors suffer from zero drift and low detection accuracy, which limits their application range. To address the above issues, a polarization navigation sensor based on a differential amplifier is designed as the operational unit. Based on the change of the arithmetic unit of the polarization signal, the algorithm for calculating the heading angle of the sensor is improved. The results of the orientation experiments with the designed sensor in clear weather indicate that the orientation error is ±1.243∘, and the standard deviation is 0.351°. The polarization navigation sensor can extract polarized light information and calculate the heading without accumulation of errors over time accurately and achieves good real-time performance.
Polarization-maintaining photonic crystal fiber with high Brillouin gain coefficient for Brillouin lasers
Authors: Liu Chenchen , Song Ningfang , Gao Fuyu , Zhang Shilei , Yang He , Xu Xiaobin
Published: August 2023

Stimulated Brillouin scattering (SBS) is effective for realizing a laser with an
ultra-narrow linewidth. Although photonic crystal fiber (PCF) is
considered an excellent medium to achieve
SBS, it does not meet the
requirements of low loss, large birefringence, and ease of
fabrication. We propose a
polarization-maintaining PCF (PM-PCF) structure and theoretically
analyze the effects of the geometric structural parameters of the
PM-PCF on various optical properties. Our theoretical analysis and
experimental results contribute to the advancement of the field of
ultra-narrow linewidth fiber lasers, distributed fiber sensing, and
fiber-optic gyroscopes related to SBS.
Measurements of slow tissue dynamics with short-separation speckle contrast optical spectroscopy
Authors: Liu Bingxue , Shah Shashwat , Küreli Gülce , Devor Anna , Boas David A. , Cheng Xiaojun
Published: August 2023

Laser speckle contrast imaging (LSCI) measures 2D maps of cerebral blood flow (CBF) in small animal brains such as mice. The contrast measured in LSCI also includes the static and slow-varying components that contain information about brain tissue dynamics. But these components are less studied as compared to the fast dynamics of CBF. In traditional wide-field LSCI, the contrast measured in the tissue is largely contaminated by neighboring blood vessels, which reduces the sensitivity to these static and slow components. Our goal is to enhance the sensitivity of the contrast to static and slow tissue dynamics and test models to quantify the characteristics of these components. To achieve this, we have developed a short-separation speckle contrast optical spectroscopy (ss-SCOS) system by implementing point illumination and point detection using multi-mode fiber arrays to enhance the static and slow components in speckle contrast measurements as compared to traditional wide-field LSCI (WF-LSCI). We observed larger fractions of the static and slow components when measured in the tissue using ss-SCOS than in traditional LSCI for the same animal and region of interest. We have also established models to obtain the fractions of the static and slow components and quantify the decorrelation time constants of the intensity auto-correlation function for both fast blood flow and slower tissue dynamics. Using ss-SCOS, we demonstrate the variations of fast and slow brain dynamics in animals before and post-stroke, as well as within an hour post-euthanasia. This technique establishes the foundation to measure brain tissue dynamics other than CBF, such as intracellular motility.
Near to short wave infrared light generation through AlGaAs-on-insulator nanoantennas
Authors: Gandolfi Marco , Carletti Luca , Tognazzi Andrea , Cino Alfonso C. , De Angelis Costantino , Guasoni Massimiliano
Published: August 2023

AlGaAs-on-insulator (AlGaAs-OI) has recently emerged as a promising platform for nonlinear optics at the nanoscale. Among the most remarkable outcomes, second-harmonic generation (SHG) in the visible/near infrared spectral region has been demonstrated in AlGaAs-OI nanoantennas (NAs). In order to extend the nonlinear frequency generation towards the short wave infrared window, in this work we propose and demonstrate via numerical simulations difference frequency generation (DFG) in AlGaAs-OI NAs. The NA geometry is finely adjusted in order to obtain simultaneous optical resonances at the pump, signal and idler wavelengths, which results in an efficient DFG with conversion efficiencies up to 0.01%. Our investigation includes the study of the robustness against random variations of the NA geometry that may occur at fabrication stage. Overall, these outcomes identify what we believe to be a new potential and yet unexplored application of AlGaAs-OI NAs as compact devices for the generation and control of the radiation pattern in the near to short infrared spectral region.
Pixel-level phase filters for off-axis shifting of sinc envelope in holographic projection
Authors: Starobrat Joanna , Wlodarczyk Filip , Makowski Michal , Suszek Jaroslaw , Sypek Maciej , Kolodziejczyk Andrzej
Published: August 2023

Off-axis projection is a common practice for reconstructions of Fourier holograms displayed on liquid crystal on silicon (LCoS) spatial light modulators (SLMs), as it spatially separates the image from the undiffracted light. Binary gratings encoded within the holograms enable maximum angular separation. However, as a result, two mirror images of equal intensities are present in the reconstruction. To introduce asymmetry to the intensity distribution and suppress one of those images, we propose a phase mask with a subpixel pattern. Presented results prove the potential of in-built SLM phase-mask layers for optimizing efficiency of the off-axis holographic projection.
Spin-dependent and tunable perfect absorption in a Fabry-Perot cavity containing a multi-Weyl semimetal
Authors: Wu Jipeng , Zeng Rongzhou , Liang Jiaojiao , Huang Di , Dai Xiaoyu , Xiang Yuanjiang
Published: August 2023

Spin-dependent absorption has been widely studied in metamaterials and metasurfaces with chirality since it develops significant applications in multiplexed holograms, photodection, and filtering. Here, the one-dimensional photonic crystal Fabry-Perot (FP) cavity containing a multi-Weyl semimetal (mWSM) defect is proposed to investigate the spin-dependent perfect absorption. Results denote that the distinct refractive indices of right hand circularly polarized (RCP) and left hand circularly polarized (LCP) waves are present due to the nonzero off-diagonal term of mWSM, thus supporting the perfect absorption of RCP and LCP waves at distinct resonant wavelengths. The different perfect absorption wavelengths of RCP and LCP waves reveal the spin-dependent perfect absorption. By altering the Fermi energy, tilt degree of Weyl cones, Weyl nodes separation, topological charge, and thickness of the mWSM layer, the perfect absorption wavelength of RCP and LCP waves can be regulated conveniently. Particularly, the linear tunable perfect absorption wavelength with thickness of the mWSM layer supports the accurate determination of perfect absorption wavelength at distinct mWSM thicknesses. Our studies develop simple and effective approaches to acquire the spin-dependent and adjustable perfect absorption without the external magnetic field, and can find practical applications in spin-dependent photonic devices.
Design of Fourier ptychographic illuminator for single full-FOV reconstruction
Authors: Gao Yuting , Pan An , Gao Huiqin , Wang Aiye , Ma Caiwen , Yao Baoli
Published: August 2023

Fourier ptychographic microscopy (FPM) is a spatial-temporal-modulation high-throughput imaging technique via a sequential angle-varied LED illumination. Therefore, the illuminator is one of the key components and the design of this illuminator is significant. However, because of the property of spherical wave, partial coherence, and aperture-induced vignetting, the acquired images must be processed in blocks first, and rely on parallel reconstruction via a graphics processing unit (GPU). The high cost makes it unappealing compared with commercial whole slide imaging system via a low-cost central processing unit (CPU). Especially, the vignetting severely destroys the space-invariant model and induces obvious artifacts in FPM, which is the most difficult problem. The conventional method is to divide the field of view (FOV) into many tiles and omit those imperfect images, which is crude and may discards low frequency information. In this paper, we reevaluated the conditions of vignetting in FPM. Through our analysis, the maximum side length of FOV is 0.759 mm for a single full-FOV reconstruction via a 4×/0.1 NA objective and a 4 mm spacing LED array in theory, while almost 1.0 mm can be achieved in practice due to the tolerance of algorithm. We found that FPM system can treat the vignetting coefficient Vf below 0.1 as brightfield images and Vf lager than 0.9 as darkfield images, respectively. We reported an optimized distribution for designing an illuminator without vignetting effect according to the off-the-shelf commercial products, which can reconstruct full FOV in one time via a CPU. By adjusting the distribution of LED units, the system could retrieve the object with the side length of FOV up to 3.8 mm for a single full-FOV reconstruction, which achieves the largest FOV that a typical 4×/0.1 NA objective with the field number of 22 mm can afford.
Weaving-based wearable sensing instrument designed for the joint motion monitoring of the elbow and knee flexion angle
Authors: Al-Lami Shahad Sabhan , Salman Ansam M. , Al-Janabi Abdulhadi
Published: August 2023

This work presents a wearable optical fiber sensing scheme based on an eight-figure macro-bend fiber configuration. The wearable sensor scheme utilizes a single-mode fiber deformed on an eight-figure configuration. The fabricated optical fiber sensor is mounted onto a wearable woven fabric and then garment on the elbow and knee joints of different healthy volunteers’ bodies. The proposed wearable biomechanical sensor shows an excellent sensitivity correlated with the human knee and elbow joints’ range of motion 0°-90° which is about −0.963 nm/°, with good regression coefficients (R2) exceeding 99.6%, for elbow joint flexion and sensitivity of 0.874 nm/° with a high R2 exceeding 99.4% for knee flexion. Besides, this sensor also displays high repeatability and stability and a fast response time of 1.66 ms, combined with a small standard deviation of about 2.321%. So, the planned wearable optical fiber sensor system is a practicable option for monitoring joint motion, human movement analysis, and soft robots.
Music can be reconstructed from human auditory cortex activity using nonlinear decoding models
Authors: Bellier Ludovic , Llorens Anaïs , Marciano Déborah , Gunduz Aysegul , Schalk Gerwin , Brunner Peter , Knight Robert T.
Published: August 2023

Music is core to human experience, yet the precise neural dynamics underlying music perception remain unknown. We analyzed a unique intracranial electroencephalography (iEEG) dataset of 29 patients who listened to a Pink Floyd song and applied a stimulus reconstruction approach previously used in the speech domain. We successfully reconstructed a recognizable song from direct neural recordings and quantified the impact of different factors on decoding accuracy. Combining encoding and decoding analyses, we found a right-hemisphere dominance for music perception with a primary role of the superior temporal gyrus (STG), evidenced a new STG subregion tuned to musical rhythm, and defined an anterior–posterior STG organization exhibiting sustained and onset responses to musical elements. Our findings show the feasibility of applying predictive modeling on short datasets acquired in single patients, paving the way for adding musical elements to brain–computer interface (BCI) applications.