bluuebunny/crossref_metadata_2025 huggingface dataset:
Point control of a differential-difference system with distributed parameters on the graph
Authors:   Voronezh State University, Provotorov Vyacheslav V. , Sergeev Sergey M. ,   Peter the Great St. Petersburg Polytechnic University, Nguyen Hoang Van ,   Voronezh State University
Published: October 2021

The article considers the problem of point control of the differential-difference equation with distributed parameters on the graph in the class of summable functions. The differential- difference system is closely related to the evolutionary differential system and moreover the properties of the differential system are preserved. This connection is established by the universal method of semi-discretization in a time variable for a differential system, which provides an effective tool in order to find conditions for unique solvability and continuity on the initial data for the differential-difference system. For this differential-difference system, a special case of the optimal control problem is studied: the problem of point control action on the controlled differential-difference system is considered by the control, concentrated at all internal nodes of the graph. At the same time, the restrictive set of permissible controls is set by the means of conditions depending on the nature of the applied tasks. In this case, the controls are concentrated at the end points of the edges adjacent to each inner node of the graph. This is a characteristic feature of the study presented, quite often used in practice when building a mechanism for managing the processes of transportation of different kinds of masses over network media. The study essentially uses the conjugate state of the system and the conjugate system for a differential-difference system — obtained ratios that determine optimal point control. The obtained results underlie the analysis of optimal control problems for differential systems with distributed parameters on the graph, which have interesting analogies with multi-phase problems of multidimensional hydrodynamics.
An example of an internal function for the SPONGE scheme
Authors:   Gumilyov Eurasian National University, Ospanov Ruslan M. , Seitkulov Yerzhan N. ,   Gumilyov Eurasian National University, Sissenov Nurbek M. ,   Gumilyov Eurasian National University, Yergalieva Banu B. ,   Gumilyov Eurasian National University
Published: October 2021

The article discusses a new version of the internal function underlying the perspective modern scheme for constructing cryptographic hash functions Sponge (cryptographic sponge). The considered example of an internal function is similar to the Keccak permutation, but it has a number of main differences. The inner function operates on a 2048-bit state S, which can be viewed as a three-dimensional bit array of 4 x 8 x 64 size. The structure of the internal function is made up of 5 transformations similar to Keccak. However, firstly, in this example, instead of a 5-bit S-box, an 8-bit one is used. In this regard, the parameters of the three-dimensional representation of the state have been changed. Secondly, instead of a linear feedback shift register, a dictionary shift register with ring carry feedback is used to generate round constants. The properties of these transformations are analyzed in the work.
Construction of reachability and controllability sets in a special linear control problem
Authors:   St. Petersburg State University, Popkov Alexander S.
Published: October 2021

The article considers the problem of constructing reachability and controllability sets for a control problem. The motion of an object is described by a linear system of ordinary differential equations, and control is selected from the class of piecewise-constant functions. Straight boundaries are also set on the controls. The article provides definitions of reacha- bility and controllability sets. It is shown that the problems of constructing these sets are equivalent and can be reduced to the problem of linear mapping of a multidimensional cube. The properties of these sets are also given. In addition, the existing approaches to solving the problem are analyzed. Since they are all too computationally complex, the question of creating a more efficient algorithm arises. The work proposes an algorithm for constructing the required sets as a system of linear inequalities. A proof of the theorem showing the correctness of the algorithm is provided. The complexity of the presented approach is estimated.
Reconditioning the conditional [Recondicionando o condicional]
Authors: Miller David
Published: October 2021

Many authors have hoped to understand the indicative conditional construction in everyday language by means of what are usually called conditional probabilities. Other authors have hoped to make sense of conditional probabilities in terms of the absolute probabilities of conditional statements. Although all such hopes were disappointed by the triviality theorems of Lewis (1976), there have been copious subsequent attempts both to rescue CCCP (the conditional construal of conditional probability) and to extend and to intensify the arguments against it. In this paper it will be shown that triviality is avoidable if the probability function is replaced by an alternative generalization of the deducibility relation, the measure of deductive dependence of Miller and Popper (1986). It will be suggested further that this alternative way of orchestrating conditionals is nicely in harmony with the test proposed in Ramsey (1931), and also with the idea that it is not the truth value of a conditionalstatement that is of primary concern but its assertability or acceptability.
A biofilosofia dos graus do orgânico: Arnold Gehlen e a ontologia de Nicolai Hartmann [The biophilosophy of organic grades: Arnold Gehlen and the Nicolai Hartmann’s ontology]
Authors: Almeida Cleber Ranieri Ribas de
Published: October 2021

O propósito deste artigo é investigar os fundamentos da antropobiologia de Arnold Gehlen de modo a demonstrar como o esquema darwiniano da evolução das espécies fora aí substituído pela biofilosofia dos graus do orgânico de Nicolai Hartmann. Esta substituição permitiu que Gehlen distinguisse claramente entre as Leis Estruturais da Constituição Humana (LECH) e as Operações Humanas (OPHU). Segundo Gehlen, a ação conjunta (handlung zuzammen) entre estruturas e operações humanas forma um circuito inconsútil no qual as carências vitais do homem (mängelwesen) são supridas mediante ações de descarga. A observação fenomenológica das leis de descarga (entlastungsgefahren) se dá na fabricação do mundo (Welt). Malgrado seus notáveis progressos no que diz respeito à explicação não-zoológica do homem, o modelo gehleniano reduziu a percepção fenomenológica do humano a uma mecânica de operações e estruturas. A substituição do esquema darwiniano pela ontologia de Nicolai Hartmann nos provê uma explicação holística e singular do homem, porém, sob pena da redução mecânica das operações simbólicas e numênicas.
Kant em defesa da alimentação saudável [Kant in defense of healthy food]
Authors: Soares Sônia
Published: October 2021

O direito humano à alimentação adequada (DHAA) foi consagrado na Carta Magna brasileira, reconhecendo na dignidade da pessoa humana o seu fundamento. Admitindo esta garantia jurídica como pré-condição para uma reflexão ética, defendo neste artigo a necessidade de utilizar a doutrina kantiana dos deveres e do cuidado de si para fundamentar a escolha de uma alimentação saudável como um dever de virtude, para o que será necessário estabelecer a dimensão moral da alimentação no âmbito da filosofia de Kant. O objetivo é mostrar a aplicação da filosofia prática de Kant na elaboração de uma nova abordagem dos problemas alimentares atuais. Minha defesa deve ser vista como complemento ao argumento da utilidade do alimento em geral presente nas políticas e programas públicos voltados para a alimentação, nutrição e segurança alimentar, que destacam os benefícios pessoais e coletivos obtidos a partir da escolha de uma alimentação saudável.
NEW METHOD FOR SPLITTING PRODUCTION AND INJECTION IN JOINT WELLS USING MODIFIED CRM MODEL
Authors: BECKMAN Alexander D.
Published: October 2021

Operating several oil-bearing facilities with a single grid of wells, the problem of dividing oil and liquid production rates by facilities is urgent. Known engineering techniques based on reservoir transmissibility coefficients and effective oil-saturated thickness do not take into account dynamic factors. The use of hydrodynamic models (HDM) is time-consuming, and the results depend significantly on the used a priori hypotheses about the geological structure of objects and the properties of fluids. Thus, there is a practical need for an analytical tool that would rely on the most reliable and available data and would allow solving the problem of separating the volumes of produced fluid and injected water with sufficient accuracy. Such a tool should take into account the dynamics of changes in reservoir pressure and have a low (compared to the hydrodynamic model) need for computing resources. A promising candidate for the role of such a tool is the CRMP-ML6 model — a fundamentally new author’s modification of the previously known CRMP model.
The CRMP model is a functional dependence of the well fluid flow rate on the injectivity of the surrounding injection wells. The unknown parameters of this dependence are determined in such a way as to minimize the discrepancy between the simulated and actual values of production rates at the selected date interval. Fundamentally new features of the CRMP-ML6 model are the regularization of the problem through the use of a priori information on the permeability of reservoirs in the vicinity of production wells and the requirement for the proximity of reservoir pressures calculated using the material balance model and from the Dupuis equation.
To assess the performance of the new model, a number of numerical simulation experiments were carried out, and the simulation results were compared with the HDM. The possibility of the CRMP-ML6 model is demonstrated to take into account the dynamic separation of production and injection, taking into account additional constraints and a priori information, and while meeting all the requirements for models of the CRM family.
NUMERICAL SIMULATION OF THERMOLUMINESCENCE QUARTZ PARTICLE
Authors: SHEINKMAN Vladimir S. , SIMONOV Oleg A. , ERINA Yuliya Yu.
Published: October 2021

One of the widely used methods for studying minerals is the thermoluminescent (TL) method, which is used to date Quaternary sedimentary rocks. Usually, the difficulty in using TL dating is the lack of information about the structure of the mineral used in the experiment. For reliable interpretation of experimental data, the authors applied the digital twin method. In this case, all stages of the transformation of the mineral used are modeled from its burial in sedimentary rocks to the stimulation of the TL-signal splash in it under laboratory conditions on special installations, taking into account the unevenness heat transfer inside the sample of this mineral.
The paper presents the results of numerical simulation of the TL signal from a spherical particle of natural quartz. The modeling was carried out in two stages. At the first stage, the influence of the burial time of quartz in the sedimentary rocks on its TL signal was determined. For this, the problem was posed of the accumulation of the crystal lattice
quartz, information about the time of its presence in the natural radiation field. At the second stage, the TL signal from a spherical particle was simulated, which was heated in an experimental setup from the surface according to a linear law. It was found that, firstly, the burial time of quartz affects the shape of the TL-curve and, therefore, the mineral is applicable for dating. Secondly, it is necessary to control the heating mode of the quartz sample, since at high heating rates, heat transfer irregularities are significant for particles with a large radius. It also affects the shape of the TL signal and, as a result, can make it difficult to obtain age definitions or distort them. To assess the effect of non-uniformity of heat transfer, a dimensionless similarity parameter was proposed, which connects the radius of the particles and the heating rate.
STUDY OF THE HEAT-CARRYING FLUID TEMPERATURE INFLUENCE IN THE HEAT SUPPLY SYSTEM ON THE INDOOR AIR TEMPERATURE
Authors: Antonova Elena O. , RYDALINA Natalia V. , STEPANOV Oleg A. , AKSENOV Boris G.
Published: October 2021

This article presents a brief history of the country’s heat supply system development. The types of heat supply systems are considered, their brief characteristics are given. Methods for determining the heat load for household needs (heating and hot water supply) of urban residents are presented.
The study of the coolant temperature influence on the air temperature in the room was carried out. The study used an experimental-theoretical research method. As a part of the experimental study, the data of temperature measurements in one of the heating points in Tyumen were requested. Within the framework of a theoretical study, the air temperature in a living room was calculated, depending on the coolant temperature according to the schedule of the CHPP and according to the supply in the supply heat pipe. In carrying out the theoretical study, standard methods were used for carrying out thermal calculations of heat supply systems, statistical research methods, as well as standard computer programs.
The need to regulate heat energy is determined and the types of regulation are considered. The analysis of the adopted temperature schedule of the CHPP was carried out and a comparison was made with the calculated temperature schedule. The solution of the equation for determining the air temperature in the room is given. The air temperature in the room depends simultaneously on two factors: the temperature of the heating medium and the temperature of the outside air. As a result of the study, the presence of a discrepancy between the temperatures of the network water supplied to consumers and the created air temperature in residential premises was determined. The intersection point of the calculated temperature schedule and the CHP schedule was determined. The necessity of observing the calculated temperature schedule of the central quality regulation has been substantiated. The necessity of heat supply at a constant flow rate of the heat carrier has also been substantiated.
Analysis Of Carrying Capacity of The Porong River Caused by Sidoarjo Mud Disposal
Authors: Saputro Robert , Sisno Suhardjono , Juwono Pitojo
Published: October 2021

This study aims to examine the sediment distribution models and the stream sediment distribution due to mud disposal of Porong River. It examines how the sediment distribution models and deposition, the distribution of stream sediment due to mud disposal along with its impacts on the river's capacity, and whether the mud disposal has a harmful impact on the water quality. The data used were based on topographic and Bathymetric data of Porong River, cross-sections of the river, and terrain sediment distribution patterns. The study conducted field and secondary data analysis, hydrological analysis, oceanographic analysis of Mura River and river hydraulic analysis. The study concludes that to maintain its capacity and prevent negative impacts, it is necessary to protect the cliffs and embankments along the segment of the river. To protect the community pond area, overburden and/or river dredging activities along with the segments from the branch to the estuary of the river are needed. Furthermore, it is also necessary to add artificial inputs such as submersible Kribs that are arranged on piles to deal with problems of river sediments in the mouth of Porong River
Digitalisation, pandemics and current world (2019-2021)
Authors: Debasa Felipe
Published: October 2021

The new millennium saw the collapse of the real estate bubble in the United States and, together with other variables such as the high price of raw materials, a major global economic crisis began in October 2008. In 2011, as a result of the confluence of technologies and connected objects (Internet of Things) sparked thoughts that, we began to speak the Fourth Industrial Revolution. On 31 December 2019, pneumonia of unknown origin was discovered in Wuhan, capital of Hubei province, P.R. China. This unexpected event is being a driver of the great digital transformation of the world that began after the 2008 crisis.
Implementation of the recommendations of the Inter- American Commission on Human Rights in the Brazilian constitutionalism: proposals and perspectives
Authors: Girardi Fachin Melina , Piovesan Flávia
Published: October 2021

Based on the study of some Brazilian cases submitted to the Inter-American Commission on Human Rights, this article aims to identify proposals to overcome common Latin- American challenges in the implementation of international recommendations. In the first part, in a retrospective analysis, several emblematic Brazilian cases and their domestic impacts and changes are addressed. In a second part, with a prospective view guided by the domestic contributions to which the Inter-American System is oriented, highlights the current system’s challenges. At this stage, proposals to overcome challenges are outlined, especially regarding the obstacles to implement the Commission’s recommendations, where the main results of the article arise. The reason for this study stands on the conviction that the compliance with international recommendations is the element that guarantees the exercise of the transformative potential of Human-Rights Systems. With the methodological research based on a bibliographical research and case law, the role of the Inter-American Commission is redesigned in the light of a dialogical triad composed by the organs of the International System, the States constitutionalism and organised civil society.
Health and Artificial Intelligence in the context of COVID-19 and beyond
Authors: Navas Navarro Susana
Published: October 2021

This article introduces the main relevant aspects of ehealth or “digital health.” In this regard, by way of an introduction, the concept of health is addressed. In the second section, the core of this article, different aspects regarding the relationship between health and technology (HealthTech) are highlighted. Next, the importance of technology in order to deliver a preventive and personalized medicine, tailor-made to each patient, is addressed. Then, in the fourth section, some discriminatory situations that may arise due to not being able to access technology are discussed. Finally, I make some remarks regarding the so-called “Internet of Bodies".
An analytical option pricing formula for mean-reverting asset with time-dependent parameter
Authors: Nonsoong Piyapoom , Mekchay Khamron , Rujivan Sanae
Published: October 2021

We present an analytical option pricing formula for the European options, in which the price dynamics of a risky asset follows a mean-reverting process with a time-dependent parameter. The process can be adapted to describe a seasonal variation in price such as in agricultural commodity markets. An analytical solution is derived based on the solution of a partial differential equation, which shows that a European option price can be decomposed into two terms: the payoff of the option at the initial time and the time-integral over the lifetime of the option driven by a time-dependent parameter. Finally, results obtained from the formula have been compared with Monte Carlo simulations and a Black–Scholes-type formula under various kinds of long-run mean functions, and some examples of option price behaviours have been provided.
doi:10.1017/S1446181121000262
An analytical approximation formula for the pricing of credit default swaps with regime switching
Authors: He Xin-Jiang , Lin Sha
Published: October 2021

We derive an analytical approximation for the price of a credit default swap (CDS) contract under a regime-switching Black–Scholes model. To achieve this, we first derive a general formula for the CDS price, and establish the relationship between the unknown no-default probability and the price of a down-and-out binary option written on the same reference asset. Then we present a two-step procedure: the first step assumes that all the future information of the Markov chain is known at the current time and presents an approximation for the conditional price under a time-dependent Black–Scholes model, based on which the second step derives the target option pricing formula written in a Fourier cosine series. The efficiency and accuracy of the newly derived formula are demonstrated through numerical experiments.
doi:10.1017/S1446181121000274
Implementation Outcome Scales for Digital Mental Health (iOSDMH): Scale Development and Cross-sectional Study
Authors: Sasaki Natsu , Obikane Erika , Vedanthan Rajesh , Imamura Kotaro , Cuijpers Pim , Shimazu Taichi , Kamada Masamitsu , Kawakami Norito , Nishi Daisuke
Published: October 2021

Background

Digital mental health interventions are being used more than ever for the prevention and treatment of psychological problems. Optimizing the implementation aspects of digital mental health is essential to deliver the program to populations in need, but there is a lack of validated implementation outcome measures for digital mental health interventions.

Objective

The primary aim of this study is to develop implementation outcome scales of digital mental health for different levels of stakeholders involved in the implementation process: users, providers, and managers or policy makers. The secondary aim is to validate the developed scale for users.

Methods

We developed English and Japanese versions of the implementation outcome scales for digital mental health (iOSDMH) based on the literature review and panel discussions with experts in implementation research and web-based psychotherapy. The study developed acceptability, appropriateness, feasibility, satisfaction, and harm as the outcome measures for users, providers, and managers or policy makers. We conducted evidence-based interventions via the internet using UTSMeD, a website for mental health information (N=200). Exploratory factor analysis (EFA) was conducted to assess the structural validity of the iOSDMH for users. Satisfaction, which consisted of a single item, was not included in the EFA.

Results

The iOSDMH was developed for users, providers, and managers or policy makers. The iOSDMH contains 19 items for users, 11 items for providers, and 14 items for managers or policy makers. Cronbach α coefficients indicated intermediate internal consistency for acceptability (α=.665) but high consistency for appropriateness (α=.776), feasibility (α=.832), and harm (α=.777) of the iOSDMH for users. EFA revealed 3-factor structures, indicating acceptability and appropriateness as close concepts. Despite the similarity between these 2 concepts, we inferred that acceptability and appropriateness should be used as different factors, following previous studies.

Conclusions

We developed iOSDMH for users, providers, and managers. Psychometric assessment of the scales for users demonstrated acceptable reliability and validity. Evaluating the components of digital mental health implementation is a major step forward in implementation science.
Chinese-Named Entity Recognition From Adverse Drug Event Records: Radical Embedding-Combined Dynamic Embedding–Based BERT in a Bidirectional Long Short-term Conditional Random Field (Bi-LSTM-CRF) Model
Authors: Wu Hong , Ji Jiatong , Tian Haimei , Chen Yao , Ge Weihong , Zhang Haixia , Yu Feng , Zou Jianjun , Nakamura Mitsuhiro , Liao Jun
Published: October 2021

Background

With the increasing variety of drugs, the incidence of adverse drug events (ADEs) is increasing year by year. Massive numbers of ADEs are recorded in electronic medical records and adverse drug reaction (ADR) reports, which are important sources of potential ADR information. Meanwhile, it is essential to make latent ADR information automatically available for better postmarketing drug safety reevaluation and pharmacovigilance.

Objective

This study describes how to identify ADR-related information from Chinese ADE reports.

Methods

Our study established an efficient automated tool, named BBC-Radical. BBC-Radical is a model that consists of 3 components: Bidirectional Encoder Representations from Transformers (BERT), bidirectional long short-term memory (bi-LSTM), and conditional random field (CRF). The model identifies ADR-related information from Chinese ADR reports. Token features and radical features of Chinese characters were used to represent the common meaning of a group of words. BERT and Bi-LSTM-CRF were novel models that combined these features to conduct named entity recognition (NER) tasks in the free-text section of 24,890 ADR reports from the Jiangsu Province Adverse Drug Reaction Monitoring Center from 2010 to 2016. Moreover, the man-machine comparison experiment on the ADE records from Drum Tower Hospital was designed to compare the NER performance between the BBC-Radical model and a manual method.

Results

The NER model achieved relatively high performance, with a precision of 96.4%, recall of 96.0%, and F1 score of 96.2%. This indicates that the performance of the BBC-Radical model (precision 87.2%, recall 85.7%, and F1 score 86.4%) is much better than that of the manual method (precision 86.1%, recall 73.8%, and F1 score 79.5%) in the recognition task of each kind of entity.

Conclusions

The proposed model was competitive in extracting ADR-related information from ADE reports, and the results suggest that the application of our method to extract ADR-related information is of great significance in improving the quality of ADR reports and postmarketing drug safety evaluation.
Women’s Preferences and Design Recommendations for a Postpartum Depression Psychoeducation Intervention: User Involvement Study (Preprint)
Authors: Siddhpuria Shailee , Breau Genevieve , Lackie Madison E , Lavery Brynn M , Ryan Deirdre , Shulman Barbara , Kennedy Andrea L , Brotto Lori A
Published: October 2021

BACKGROUND

Postpartum depression (PPD) is one of the leading causes of maternal morbidity, affecting up to 18% of Canadian new mothers. Yet, PPD often remains untreated due to numerous barriers in access to care, including location and cost. Development of eHealth interventions in collaboration with patient partners offers an exciting opportunity to fill this care gap and provide effective and affordable care to new parents across British Columbia.

OBJECTIVE

Our aim was to determine the content and design preferences of women previously diagnosed with PPD to inform changes to the development of a web-enabled intervention for education and management of PPD.

METHODS

Webpage prototypes were created to mimic the web-enabled resource using findings from completed focus group research that assessed what women want in a web-enabled support resource for PPD. A convenience sample of women aged >18 years and previously diagnosed with PPD was recruited. Feedback was collected on the content and design of the prototypes via semistructured interviews and online surveys. Qualitative, inductive analytic, and quantitative methods were used.

RESULTS

A total of 9 women (mean age 37.2 years, SD 4.8 years) completed the interview and a majority of the survey. The following 6 themes were identified: (1) inefficacy of text-heavy layouts, (2) highlighting key information, (3) clarity/understandability of the language, (4) finding support groups, (5) validation and immediate help for feelings of isolation, and (6) helpfulness and accessibility of the resource. Each theme identified elements of content or design that were either effective or may be improved upon. Most women (8/9, 89%) favored content relating to foundational knowledge of PPD, such as symptoms and management options. The layout, language, and content were found to be generally easy to understand, clear, trustworthy, and helpful.

CONCLUSIONS

Six key areas were identified by women previously diagnosed with PPD, as requiring focus in a web-enabled psychoeducation program. Consistent with past research, this study also found that support and enthusiasm for web-enabled programs support PPD management as an adjunct to other evidence-based treatments.
Adoption of a Postoperative Pain Self-Report Tool: Qualitative Study (Preprint)
Authors: Thiel Bram , Iao Inez , Smid Joris , de Wit Emmy , Koopman Seppe , Geerts Bart , Godfried Marc , Kalkman Cor
Published: October 2021

BACKGROUND

With electronic technologies, patients are provided with tools to easily acquire information and to manage and record their own health status. eHealth interventions are already broadly applied to perioperative care. In a similar way, we aimed to utilize a smartphone application to enable postoperative patients to partially self-manage their postoperative pain. The results of a previously performed proof-of-concept study regarding the application were promising, and nurses as well as patients were optimistic regarding this innovative mobile application. Nevertheless, in reality, it appears that the usage and overall implementation of this application have stagnated since its introduction. Problems with innovation adoption are not novel; various studies have been conducted to explore the reasons for low implementation success of eHealth applications and indicated that adoption is influenced by multiple organizational factors. This study investigated the influence of these organizational factors on the adoption process, aiming to provide more insight in the dos and don’ts for implementing eHealth in the working processes of hospital care.

OBJECTIVE

This study aimed to provide insight in how to successfully implement a technological eHealth innovation in a general nonacademic hospital.

METHODS

A qualitative study was conducted to explore organizational factors affecting the innovation adoption process. Data were collected by conducting semistructured one-on-one interviews with 11 stakeholders. The data were analyzed using thematic analysis identifying overarching themes.

RESULTS

Absorptive capacity, referred to as an organization’s dynamic capability pertaining to knowledge creation and utilization that enhances an organization’s ability to gain and sustain a competitive advantage, was regarded as the most influential factor on the application’s adoption. Accordingly, it appeared that innovation adoption is mainly determined by the capability and willingness to assimilate and transform new information into productive use and the ability to absorb a novel innovation. Absorptive capacity was found to be influenced by the innovation’s benefit and the sense of ownership and responsibility. Organizational readiness and management support were also regarded as essential since absorptive capacity seemed to be mediated by these factors. The size of the hospital influenced eHealth adoption by the amount of resources available and by its organizational structure.

CONCLUSIONS

In conclusion, absorptive capacity is essential for eHealth adoption, and it is mediated by management support and organizational readiness. It is recommended to increase the degree of willingness and ability to adopt an eHealth innovation by enhancing the relevance, engaging stakeholders, and assigning appropriate leaders to offer guidance.
The Association Between Sleep Disturbance and Suicidality in Psychiatric Inpatients Transitioning to the Community: Protocol for an Ecological Momentary Assessment Study (Preprint)
Authors: Dewa Lindsay H , Pappa Sofia , Greene Talya , Cooke James , Mitchell Lizzie , Hadley Molly , Di Simplicio Martina , Woodcock Thomas , Aylin Paul
Published: October 2021

BACKGROUND

Patients are at high risk of suicidal behavior and death by suicide immediately following discharge from inpatient psychiatric hospitals. Furthermore, there is a high prevalence of sleep problems in inpatient settings, which is associated with worse outcomes following hospitalization. However, it is unknown whether poor sleep is associated with suicidality following initial hospital discharge.

OBJECTIVE

Our study objective is to describe a protocol for an ecological momentary assessment (EMA) study that aims to examine the relationship between sleep and suicidality in discharged patients.

METHODS

Our study will use an EMA design based on a wearable device to examine the sleep-suicide relationship during the transition from acute inpatient care to the community. Prospectively discharged inpatients 18 to 35 years old with mental disorders (N=50) will be assessed for eligibility and recruited across 2 sites. Data on suicidal ideation, behavior, and imagery; nonsuicidal self-harm and imagery; defeat, entrapment, and hopelessness; affect; and sleep will be collected on the Pro-Diary V wrist-worn electronic watch for up to 14 days. Objective sleep and daytime activity will be measured using the inbuilt MotionWare software. Questionnaires will be administered face-to-face at baseline and follow up, and data will also be collected on the acceptability and feasibility of using the Pro-Diary V watch to monitor the transition following discharge. The study has been, and will continue to be, coproduced with young people with experience of being in an inpatient setting and suicidality.

RESULTS

South Birmingham Research Ethics Committee (21/WM/0128) approved the study on June 28, 2021. We expect to see a relationship between poor sleep and postdischarge suicidality. Results will be available in 2022.

CONCLUSIONS

This protocol describes the first coproduced EMA study to examine the relationship between sleep and suicidality and to apply the integrated motivational volitional model in young patients transitioning from a psychiatric hospital to the community. We expect our findings will inform coproduction in suicidology research and clarify the role of digital monitoring of suicidality and sleep before and after initial hospital discharge.

INTERNATIONAL REGISTERED REPORT

PRR1-10.2196/33817
Intertextualidad y literatura comparada
Authors: Losada Goya José Manuel
Published: October 2021

En este trabajo, José Manuel Losada Goya trata de la intertextualidad concebida como lectura comparatista, es decir, como la determinación de relaciones, que es una posibilidad metodológica que interesa con el fin de aclarar que la literatura comparada no es comparar en el sentido de reduccionismo comparatista. La intertextualidad es la categoría que permite acometer un análisis y una lectura comparatistas a partir de un único texto. Dado que la literatura defiende como hecho incuestionable el diálogo de culturas, era lógico que se procediera a estudiar las consecuencias inmediatas de este principio, y entre estas consecuencias resalta que la absorción o transformación de un texto anterior se puede considerar más bien como una intertextualidad en lugar de una intersubjetividad.
Història da Literatura, Literatura Comparada e Crítica Literária: Fragüéis Fronteiras Disciplinares
Authors: Velloso Cairo Luiz Roberto
Published: October 2021

História da Literatura, Literatura Comparada e Crítica Literária são três disciplinas que mantêm uma ligação muito próxima desde o século XIX. As duas primeiras, relativamente recentes, são frutos das idéias românticas que se espalharam pela Europa, no final do século XVIII e a última é a matriz geradora, pois é o seu efetivo exercício o responsável, num certo sentido, pelo aparecimento das mesmas. A História da Literatura como disciplina autônoma surge mais ou menos por volta de 1784 e 1791, com a publicação de Idéias para a Filosofia da História da Humanidade, de Johann Gottfried Herder, na Alemanha, e a Literatura Comparada data de 1800, quando da publicação de obras como Da Alemanha, de Mme. de Sttiel, em cujo subtítulo «Da literatura considerada em suas relações com as instituições sociais» começa a aparecer o espírito da investigação comparatista nos estudos de literatura.
Barroco e Poesia Experimental
Authors: Dos Prazeres Gomes Maria
Published: October 2021

Retomar um tema que há muito nos inquieta e que, sobre perspectiva diversa, abordamos anos atrás: as relações entre o Barroco e o experimentalismo português. Tais relações têm sido mencionadas, de forma esporádicae assistemática, por alguns poetas experimentais de todo o mundo. No caso das literaturas de língua portuguesa, também não temos paralelos sistemáticos, mesmo depois dos estudos inaugurais de Affonso Ávila sobre o Barroco, na década de 70, seguidos pelos de Melo e Castro, dispersos elll várias de suas obras críticas e, sobretudo, pelos de Ana Hatherty, que, também nos anos 70, passa ainvestigar o que ela denominou de «uma arqueologia de poesia experimental.»
Identidad/diferencia-Oriente/Occidente
Authors: Seyýn Zeynep B.
Published: October 2021

En este ensayo, Zeynep B. Seyýn trata de la oposición diametral entre las civilizaciones islámica y europea: mientras que la tradición europea obliga a lo extraño en oposición a estar contra ella para armonizar la desarmonía y hacerlo parte de su sistema, el Islam remite lo otro a sus fronteras insulares sin esperanzas de transversalidad. A pesar de ello, todos los que vivimos en la Tierra pretendemos una posibilidad para la igualdad que nos ahorre el camino hacia la indiferencia. Es necesario encontrarnos con el otro sin la intención de imponerle los mismos valores y estar dispuestos a contextualizar y revitalizar nuestros valores. Si se logra esto, Occidente se quitaría el aguijón de la autenticidad y Oriente el de su radicalismo.
Historia y memoria en la poética de Balún Canán
Authors: Perus Françoise
Published: October 2021

A menudo la lectura de Balún Canán (1957) ha sido asociada con aquella niña, algo voluntariosa, que al principio de la novela aparece resistiendo los cuidados de su nana indígena y lidiando con las prerrogativas de su hermano menor —pero varón al fin y al cabo—, y que, adolorida luego por la pérdida de ambos, se prepara desde la otra orilla del tiempo y el texto para rescatar las vivencias pasadas por medio de la escritura. Sin duda, éstas y otras muchas pérdidas constituyen un tema medular en la primera novela de Rosario Castellanos; y sin duda también estas mismas pérdidas guardan cierta correspondencia con la biografía de la narradora chiapaneca.
En el reino de la ambivalencia: la Cuba de Alejandro de Humboldt (Relation historique du Voyage aux Régions équinoxiales du Nouveau Continent)
Authors: Lubrich Oliver
Published: October 2021

Las estancias de Humboldt en Cuba y la obra sobre la isla que surgió de esas visitas, gozaron en la propia Cuba de un amplio interés. Es notable el papel de Humboldt en la imaginación colectiva de Cuba, así como en su vida intelectual, en su historia así como en su cultura cotidiana de la actualidad. Para leer el Ensayo político sobre la Isla de Cuba desde un punto de vista literario, o más bien teórico-literario, es preciso considerarlo no como algo aislado, sino recurriendo a los pasajes correspondientes en el contexto de la Relation historique du Voyage aux Régions équinoxiales du Nouveau Continent.
Mujeres de barro y sangre
Authors: Andrade Lourdes
Published: October 2021

En su ensayo “El arte de México, materia y sentido,” Octavio Paz refiere las peripecias de Coatlicue, diosa azteca de la tierra y de la muerte violenta, al toparse con ella la mirada europea. El horror y la fascinación se alternan cuando dicha mirada se encuentra con la pétrea efigie de la deidad prehispánica: los tontos se atemorizan, la entierran, sin lograr con ello anular su poder; los sabios la admiran, la escrutan, sin conseguir desentrañar su misterio…El ojo surrealista que, a decir de André Breton, “existe en estado salvaje,” parece más apto para encarar al ídolo precolombino. Se enfrenta al monstruo sagrado y se estremece ante su esencia “convulsiva”, la de su naturaleza ambigua —femenina y voraz, fértil y bestial—, la de su otredad cultural y geográfica que lo seduce y atemoriza tanto como el cuerpo de la mujer. Dicen que antaño, ritualmente, los hombres copulaban con la tierra, hundían en ella su carne tensa, la irrigaban con su esperma provocando, por analogía, la mágica fertilidad.
Patologías y contagios literarios
Authors: González Mateos Adriana
Published: October 2021

Los contagios literarios se refieren a un tópico presente en la literatura francesa e inglesa de finales del siglo XIX: es el contagio de una perversión por medio de las páginas de un “libro emponzoñado” que se convierte en un seductor y en un maestro para cambiar la vida del hasta entonces inocente lector, como tuvo que lamentar el incauto Dorian Gray. Cuando esa perversión es la homosexualidad y el venenoso libro la contagia por medio de alusiones, sobreentendidos e insinuaciones, ya que tal patología no puede decir su nombre y debe velarse con todo tipo de disfraces, nos encontramos ante un muy particular uso de la literatura, que se convierte en un lenguaje cifrado entre iniciados. Este artículo analiza dos brotes hispanoamericanos de semejantes infecciones librescas: los “subterfugios” empleados por Manuel Mujica Lainez para cifrar su mensaje infeccioso en la Argentina de los años 40, tomando como ejemplo un cuento de Misteriosa Buenos Aires, y la evolución del contagio literario entre dos jóvenes poetas mexicanos de los años veinte, Salvador Novo y Xavier Villaurrutia.
El recurso de la ficción en la divulgación de la ciencia: un asunto de alta costura. Reflexiones sobre el Quinteto de Cambridge de John L. Casti
Authors: Sánchez Mora Ana María
Published: October 2021

¿Cómo funciona la mente? ¿Cómo aprendemos, recordamos, vemos, oímos? ¿Qué es la conciencia? Aunque las dos primeras preguntas son sumamente complejas, muchos científicos esperan responderlas haciendo ingeniería inversa de nuestros circuitos neurales. Pero la conciencia, ese darnos cuenta de nosotros mismos, parece ser una incógnita que rebasa lo meramente físico; tan esotérica que durante la mayor parte del siglo XX la ciencia no la consideraba un tema de investigación; hoy es un problema de frontera. Una explicación de la conciencia sería un triunfo para las neurociencias.
À la recherche du père perdu o un retorno a la diferencia
Authors: Weinberg Liliana
Published: October 2021

Este artículo busca reexaminar la presencia del padre en la obra de Roland Barthes. En él se afirma que Louis Barthes, la borrosa figura paterna, brilla precisamente por su ausencia. La aparición de una nueva y monumental biografía de Roland Barthes preparada por Thiphaine Samoyault aporta nuevos elementos para recuperar datos hasta el momento perdidos en una caja de documentos procedentes de los archivos de Roland Barthes en los que quedan consignados algunos elementos autobiográficos. Estos elementos nos llevan a conjeturar que el padre muerto en el mar da lugar a una matriz interpretativa que caracterizamos como “retorno a la diferencia”. Se esboza un breve recorrido por la obra de Barthes a partir de esta figura que puede ser leída también como una busca del padre perdido.
Effects of synthesis conditions and storage on silver nanospheres chemically reduced by mulberry leaf extracts
Authors: Pholnak P. , Khunsare P. , Sirisathitkul Y. , Sirisathitkul C.
Published: October 2021

Silver (Ag) nanospheres were chemically reduced from 1 mM silver nitrate (AgNO3) solutions using mulberry (Morus alba Linn.) leaf extracts. The increase of pH in the synthesis from 9 to 13 modified the surface plasmon resonance peak in UV-Vis spectra relating to the particle diameter around 20 nm. Smaller nanoparticles were obtained from the syntheses at pH 7.4-7.7 and their density was slightly increased with the increase in synthesis temperature from 25 °C to 90 °C. The particle size was increased with increasing AgNO3 concentration from 0.1 to 0.5 M but the mixed phases were obtained from the 0.5 M AgNO3 precursor. After storing for 10 months at room temperature, the nanosuspensions remained without Ag sediment but their colors had significantly changed due to particle agglomerations. The colors were characterized by the smartphone colorimetry according to the RGB, CIE space, as well as chroma and hue angle. Based on the chroma and CIE b* values, the effect of synthesis pH in the stored nanosuspensions was comparable to that before the storage. Although the temperature had only moderate effects, nanosuspensions synthesized at 25 °C, 80 °C, and 90 °C were clearly distinguished by the hue and CIE b* values.
Electrical impedance measurement system to assess in-situ experiments on epithelia under ELF magnetic fields exposure
Authors: Domínguez G. , Cardiel E. , Reyes J.L , Sánchez E. , Hernández P.R.
Published: October 2021

Purpose: The development of an electric impedance meter based on the impedance spectroscopy technique, for in vitro and in situ experimentation, with cellular epithelia submitted to extremely low frequency magnetic fields in a controlled environment. Unlike other reported systems, a strength of the one presented here is that it avoids the influence of external factors on the experiment. Materials and methods: The designed system employs the electrical impedance values obtained by the impedance spectroscopy technique to determine the parameters of the simple equivalent electrical model of a cellular monolayer. The Madin-Darby Canine Kidney (MDCK) cell cultures were used as subjects of study in the experimental protocol. Results: The validation was carried out by comparing the transepithelial electrical impedance data of the cell cultures obtained with the developed system and those of the Cellzscope® commercial system used as the standard. Non-significant differences were obtained. Conclusion: It was confirmed that the developed system provides reliable values of transepithelial electrical impedance to experiment with cell cultures and take advantage of the controlled environment to reduce the effects of experimental management.
Using robots to improve indoor air quality and reduce COVID-19 exposure
Authors: Abdallah L. , Nasr A.
Published: October 2021

Air pollution is the world’s largest environmental health risk, accounting yearly for about 8 million deaths. Most of the people spend 80% to 90% of their time indoors. Therefore, Indoor Air Quality (IAQ) has a direct impact on overall health. In this paper, a robot, equipped with sensors for measuring IAQ parameters such as temperature, relative humidity, CO2, Particulate Matters and Volatile Organic Compounds (VOC) is used to measure these parameters and compare the measured values to the pre-set permissible levels of concentrations of such parameters. If one (or more) of the measured values exceed the pre-set threshold values, the measured values are communicated to the user via a mobile application and the robot will take a corrective action by disinfecting the place using a sterilizing solution. Validation of the methodology was verified at an educational institute in Alexandria, Egypt.