bluuebunny/crossref_metadata_2025 huggingface dataset:
Mercadotecnia gubernamental: un concepto de la administración pública
Authors: Pérez-Rojas Gustavo Adolfo
Published: February 2023

Se desarrolla el concepto de mercadotecnia gubernamental como parte de una expansión de conceptos en la administración pública. En la literatura anglosajona existen algunas aproximaciones mientras que para el mundo hispano es aún un tema anecdótico. La cultura posmoderna ha privilegiado la popularidad y la imagen como transmisores de ideas. La comunicación gubernamental siempre ha existido, pero es a partir de esta nueva realidad que se vuelve importante tener un mecanismo estratégico que canalice de la mejor forma la comunicación, para generar mejores relaciones entre el gobierno y el ciudadano, ahí aparece la mercadotecnia gubernamental.
Personalización de la política y liderazgos políticos: Los casos de las elecciones presidenciales de 2012 y 2018 en México
Authors: Martínez-García Ramsés Daniel , Vivero-Ávila Igor
Published: February 2023

El propósito esencial de la ponencia es analizar la tendencia de la personalización de la política en campañas electorales como resultado  del cambio dentro de las organizaciones partidistas, entendida como arreglos y ajustes institucionales que los partidos políticos han tenido que asumir para mantenerse presentes en el sistema de partidos mexicano, al maximizar la visibilidad mediática de los candidatos y de sus cualidades personales, delegando la experiencia política en segundo plano (Rahat, 2015) y, por otra parte, debido a los liderazgos políticos personales que han desarrollado. 

     Los estudios de caso que se presentan son dos. El primero es la elección presidencial de 2012 marca el regreso al poder del Partido Revolucionario Institucional (PRI) con su candidato Enrique Peña Nieto, bajo un esquema de campaña basado en el apoyo estructural del partido, pero también por una elevada exposición mediática de la vida personal de un político con cualidades carismáticas personales. El segundo caso que se analiza es la victoria de Andrés Manuel López Obrador, supone el ascenso de un partido político de reciente creación; Movimiento de Regeneración Nacional (MORENA) quien vio en la figura de su candidato el medio para ser protagonista de la vida política nacional. Ambos casos representaron alternancias de gobierno y muestran dos tipos de liderazgos políticos contrastantes desde su origen y en la forma que desarrollaron sus carreras políticas para llegar a la presidencia de la República.

     También es importante señalar que hay factores exógenos que impulsan el cambio partidista y el surgimiento de liderazgos políticos personales. Entre ellos, se encuentra la disminución de identidades partidistas (Moreno, 2009) volatilidad del voto (Díaz y Vivero, 2015) y ascenso del uso de los medios de comunicación digital. Todo ello abona a que las campañas electorales se encuentren en la etapa posmoderna (Díaz, 2016) caracterizada por priorizar la exposición de la imagen personal de los candidatos y candidatas.
Percepción del marketing en miembros de la comunidad LGBTTTIAQ+, en Tabasco, México
Authors: Osorio-Hernández María Cecilia , Mandujano-Contreras Juan Carlos , Miranda-Sánchez Jennifer Darvelia
Published: February 2023

El mercado rosa gana visibilidad exponencialmente, pues representa un alto potencial económico y atractivo para las empresas, las cuales implementan diversas estrategias de marketing para ser atractivas para este mercado. Ante lo cual, la presente investigación busca conocer la percepción que los consumidores rosas tienen ante las estrategias de marketing que las empresas despliegan para poder captarlos y satisfacer sus deseos y necesidades. La investigación fue cuantitativa de tipo exploratorio-descriptivo y con base en un muestreo no probabilístico por bola de nieve, se contó con la participación de 234 estudiantes de la Universidad Juárez Autónoma de Tabasco que se autoidentificaron como parte del colectivo LGBTTTIAQ+. Las conclusiones del estudio muestran que existe desconfianza a las marcas que se dirigen al mercado rosa, percibiéndolas como una actitud de conveniencia y no por una real empatía, de esa manera los consumidores rosas tienden a analizar y estar alerta sobre las acciones que las empresas tienen con la comunidad. Siendo así que estos en su mayoría no solo se fijen en los productos ofrecidos, sino también en las acciones y actitudes que las empresas tienen hacia el colectivo LGBTTTIAQ+.
Osteoporosis-related characteristics in care home residents in England: a retrospective cohort study
Authors: Gerasimaviciute Vaiva , Mathur Rohini , Mansfield Kathryn Elizabeth , McDermott Matthew Paul , Neasham David Edward , O'Kelly James Liam
Published: February 2023

Background

The characteristics of care home populations, with respect to fracture risk factors, have not been well-defined.

Aim

To describe osteoporosis-related characteristics among care home residents, including fracture risk factors, fracture rates, post-fracture outcomes, and osteoporosis treatment duration.

Design & setting

A descriptive cohort study of care home residents aged ≥60 years (n= 8366) and a matched cohort of non-care home residents (n= 16 143) in England from 2012 to 2019. Clinical Practice Research Datalink (CPRD) linked to Hospital Episode Statistics (HES) and Office for National Statistics (ONS) death data were used.

Method

The characteristics were assessed using descriptive statistics. Fracture risk factors and fracture rates were described in both the care home and matched population. In the care home population, Kaplan–Meier curves were plotted to assess osteoporosis treatment duration.

Results

At index, fracture risk factors were more common in care home residents versus the matched cohort, including body mass index (BMI) <18.5 (12.2% versus 5.1%), history of falls (48.9% versus 30.7%), prior fracture (26.5% versus 10.8%), and prior hip fracture (17.1% versus 5.8%). Fracture rate was 43.5 (95% confidence interval [CI] = 39.7 to 47.5) in care home residents and 28.0 (95% CI = 26.3 to 29.9) per 1000 person–years in the matched cohort. Overall, osteoporosis treatment was initiated in 3.6% (n= 225/6265) of care home residents and 45.9% remained on treatment at 12 months. Among care home residents who experienced fracture, 21.9% (n= 72/329) received an osteoporosis diagnosis; 21.2% (n= 63/297) initiated osteoporosis treatment post-hip fracture.

Conclusion

Care home residents had more fracture risk factors and higher fracture rates than the matched cohort; however, osteoporosis diagnosis, treatment rates, and treatment duration were low. There is an opportunity to improve osteoporosis management in this vulnerable population.
Struktur Kapital dan Diskresi Manajerial terhadap Pengungkapan Corporate Social Responsibilty (CSR)
Authors: Tang Sukiantono , Marlina Sherly
Published: February 2023

The more companies in one area or region will have an impact and contribution to the community and the surrounding environment. Corporate social responsibility (CSR) is able to bring a better oriented company, and by taking into account the social principles of society, stakeholders, environmental principles, and also no less important, namely the discretionary actions of management. Management discretionary actions such as actions to manage excess costs contained in management. CSR practices reduce the level of asymmetric information and agency costs, such as an irregular CSR-related information, not all of which are available and agency costs are also limited, but the level of systematic risk and the cost of capital, which ultimately increases the possibility of increasing equity while reducing dependence on external financing and debt. CSR is realized by the company's management with the aim, as a strategy to protect itself, which allows personal gain to be obtained by investing shares in the company. This study aims to determine the contribution of a company's capital structure and managerial discretion to the CSR defense strategy of companies in Indonesia. This research is a quantitative research. Sources of research data were obtained from 348 companies listed on the Indonesia Stock Exchange and published financial reports and annual reports from 2017-2021. The Fixed Model Effect research model, the results of this study indicate that there is no significant relationship between capital structure and managerial discretion on CSR.
E-commerce transaction modeling formalisms
Authors: González-Castolo Juan Carlos , Ramos-Cabral Silvia , Hernández-Rueda Karen , Zatarain-Durán Omar Alí
Published: February 2023

This article presents the modeling of the purchase-sale transaction (pst) in electronic commerce (e-commerce) using different formalisms. E-commerce is an area of interest that is gaining rapid momentum in recent times because of the pandemic. In this work, the pst is a basic scheme that particularly excludes the participation of the intermediary that manages the reception and/or transfer of money. With the above, it is intended to minimize the number of actors involved in the pst to make relevant the contrast of the power representation of different formalisms to facilitate the analysis and make improvements. Firstly, conceptual maps are among formalisms that facilitates the exposition of complex processes. A next formalism is the coverage tree which allows to follow the flow of the pst in a clear way. The pst can be abstracted into a mathematical expression, however, it loses the power of visual scheme. The pseudocode is a way of representing computational processes that, in this case, allows modeling the pst also. Flowcharts are a tool associated with the development of programs that allow visually displaying the events of the pst.
El lago helado
Authors: Fontán Gustavo , Peirano Gloria
Published: February 2023

Trilogía del Lago Helado es una película de Gustavo Fontán, de cuyo proceso de realización nació este libro. No se trata de un diario de filmación en el sentido estricto; no recorre los pasos del rodaje o de la postproducción ni relata aspectos técnicos. Expone, con el foco puesto en la poética que signa a la obra, impresiones, reflexiones, breves anécdotas que fueron dando origen al contenido y a la forma del film. Los textos de los autores, Gustavo Fontán (El lago helado) y Gloria Peirano (Manual para sonámbulos) están precedidos por dos estudios a cargo de Eduardo A. Russo y de Roger Koza, que se refieren a esta película en particular y a la estética fílmica de Fontán en general. En las páginas del libro, las palabras de Gustavo y de Gloria dialogan con algunas citas de autores diversos y con imágenes emanadas de la película, de modo tal que todo el conjunto sumerge sutilmente al lector en el mundo de ese lago helado, donde la cotidianeidad y los sueños se entretejen en el difuso límite entre la realidad y la ficción.
Co je kostel? K počátkům šlechtických sídel českého středověku
Authors: Laval Filip
Published: February 2023

V diskusi o období raného středověku je z archeologického hlediska nadále třeba se vyrovnat s absencí sídel přiřaditelných ke vznikající šlechtě, z historického hlediska je neméně palčivým problémem otázka, co geneze šlechty signalizuje v rámci celospolečenských proměn. Pozorování základního uspořádání vybraných hradních a jiných elitních sídel v západním kulturním prostředí a jejich srovnání s podobou románských kostelů vybavených západní věží z českého území vede k předložení diskusního závěru, že rané české hrady se skrývají v objektech, jež dnes považujeme za výhradně církevní stavby. Výstavba raných hradů (tj. kostelů), jejichž terminologie je odvozena od latinského castellum, doprovázela společenské proměny spočívající v postupném rozpadu archaických příbuzenských společenství – klanů.
O Lazer pela Ótica da Cotidianidade em Terapia Ocupacional
Authors: Almeida Diego Eugênio Roquette Godoy
Published: February 2023

Introdução: Amplo debate multidisciplinar vem problematizando teorias clássicas sobre o lazer, sobretudo a oposição criada entre lazer e trabalho. Objetivo: analisar o modo como o lazer tem sido teorizado em TO e, a partir do diálogo multidisciplinar, propor avanços apoiados na perspectiva da cotidianidade. Resultados e discussão: O lazer como tempo livre automotivado se destaca na TO, denotando estagnação intelectual. Partimos da produção de Christiane Gomes que define o lazer pelo prisma da cultura. Utilizamos também Raymond Williams para redefinir vivência cultural pelo materialismo histórico, e para relacionar cotidianidade e lazer. Conclusão: mais que uma classe de ocupações, pela cotidianidade o lazer é visto a partir de uma totalidade social, entrecruzando as dimensões do tempo, territorialidade e ludicidade.
Políticas Públicas de Esporte e Lazer
Authors: Núñes Cárdenas Ramón , Freire Ivete Aquino , Núñes Pumariega Yesica , Pumariega Torres Catalina Dominga
Published: February 2023

Apesar dos termos “esporte” e “lazer” frequentemente caminharem juntos tanto nos aportes legais quanto nas produções científicas e discursos políticos, e ser irrefutável a afinidade entre eles, é importante considerar que estas duas manifestações não se confundem do ponto de vista teórico-metodológico. Isto porque, nem sempre o esporte é lazer; e o lazer não se resume a esporte. Ponderando o exposto, este artigo tem como objetivo estabelecer relação entre alguns aspectos teóricos de lazer, esporte recreativo e os programas e projetos do governo para o setor. Apresenta-se um recorrido que se inicia com concepções teóricas sobre as políticas públicas de esporte e lazer no Brasil, chegando a alguns projetos e programas para sua efetivação.
Arquitetura Escolar e as Experiências Lúdicas: Aproximações através de Diretrizes de Projeto para os Espaços Livres Escolares da Rede Municipal de Ensino de Curitiba/PR
Authors: Lima Gabriela Ingrid de
Published: February 2023

O lazer na infância, que diz respeito aos jogos e brincadeiras, é uma importante dimensão da vida, pois contribui para o desenvolvimento humano criativo e emancipatório, e para o enriquecimento da cultura lúdica. Nas escolas, essas experiências encontram seu lugar mais privilegiado nos espaços livres, como pátios, quadra e jardins, os quais propiciam uma maior variedade de práticas lúdicas espontâneas. Contudo, apesar da importância desses espaços para as crianças, eles tendem a ser menos explorados e valorizados nos projetos arquitetônicos escolares. Dessa forma, esta pesquisa parte da seguinte questão: ‘Como os projetos dos espaços livres das escolas municipais de ensino fundamental de Curitiba/PR podem contribuir para as experiências lúdicas das crianças nos momentos de lazer?’, e tem como objetivo geral identificar diretrizes de projeto para os espaços livres das escolas municipais de ensino fundamental de Curitiba/PR, que possam contribuir para as experiências lúdicas das crianças. Para isso, foi utilizada a Avaliação Pós-Ocupação (APO) como abordagem metodológica, e a construção dos dados se deu a partir de entrevista com a Secretaria Municipal de Educação de Curitiba, visitas em escolas da Rede Municipal de Ensino de Curitiba, atividade de escuta com as crianças e busca por referenciais de projeto. Os resultados alcançados neste trabalho apontam que os projetos para os espaços livres escolares podem contribuir para as experiências lúdicas das crianças ao dialogar mais com a cultura lúdica local, ao envolver a comunidade escolar no processo de projeto, ao proporcionar condições ambientais mais confortáveis, ao se relacionar com o entorno da escola, ao contribuir para que o intervalo seja uma experiência mais democrática para todos e ao promover contato com mais elementos naturais. Neste sentido, as diretrizes de projeto para os espaços livres escolares desenvolvidas nesta pesquisa são uma ferramenta, através da qual, busca-se a concretização dessas intenções.
Coaxial heterostructure formation of highly crystalline graphene flakes on boron nitride nanotubes by high-temperature chemical vapor deposition
Authors: Kato Masakiyo , Inoue Taiki , Chiew Yi Ling , Chou Yungkai , Nakatake Masashi , Takakura Shoichi , Watanabe Yoshio , Suenaga Kazu , Kobayashi Yoshihiro
Published: February 2023

We develop a high-temperature chemical vapor deposition of highly crystalline graphene on the surface of boron nitride nanotubes (BNNTs). The growth of few-layer graphene flakes on BNNT templates was confirmed by scanning transmission electron microscopy. Based on an investigation of the effect of growth temperature and growth time on defect density, graphene with relatively high crystallinity was obtained at 1350 °C. The absence of undesirable alterations in the BNNT lattice during graphene growth was verified by multiple analyses. The high-temperature growth of heterolayers would assist in the advancement of nanodevices that coaxially combine graphene and boron nitride.
Effects of initial three-dimensional electron energy distribution on terahertz Bloch oscillations in a biased semiconductor superlattice
Authors: Unuma Takeya , Ueda Kosuke , Okamoto Ryuichi
Published: February 2023

We investigate how the initial three-dimensional energy distribution of electrons created by femtosecond pump pulses in a biased semiconductor superlattice affects terahertz Bloch oscillations, which imitate a step response to a bias electric field. The emitted terahertz waveforms are well reproduced from a damped oscillation current with capacitive nature, exhibiting shorter relaxation times and worse temporal resolutions for central pump photon energies that are outside the range of ordinary electron excitation into the conduction first miniband. This indicates that in-plane excess energy changes the relaxation time via scattering processes, while partial use of the pump pulse spectrum reduces the temporal resolution.
Financial Technology and Human Resource Competency in Financial Management for UMKM at Palopo City
Authors: Lestari A. Wulan , Antong Antong , Usman Halim
Published: February 2023

Abstract

This study aint to determine the effect of fintech and human resource competencies in the financial management of umkm in palopo city. The data source in this study is primary data. The primary data used in this study were obtained from distributing questionnaires. The population selected for this study were UMKM in Palopo City. Respondents were given a number of statements and then asked to respond with their own statements. Furthermore, respondents were asked to fill out the questionnaire using an anonymous system. This approach aims to avoid potential bias during the data collection process. The research method used is quantitative method and analyzed using Structural Equation Model (SEM) approach using AMOS software. The questionnaire in this study was prepared based on the variables to be tested, namely Financial Technology, Resources, Financial Management of UMKM. All variables are measured using a Liket scale with 5 (five) alternative answers. The following are the specifications: 1) Strongly Disagree; 2) Disagree; 3) Neutral; 4) Agree; 5) Strongly Agree. The results showed that (1) The results of data analysis show that human resource competencies affect financial technology. (2) The results showed that simultaneously the umkm financial management variable had a significant influence on financial technology. (3) While the results of umkm financial management variables have an effect on human resource competencies.

 

Keywords: Fintech, Finance, Human Resources, Management, UMKM
Sand Soil Image Processing Using the Watershed Transform and Otsu Thresholding Based on Gaussian Noise
Authors: Tomasila Golda
Published: February 2023

Image processing technology is one of the technologies that can help facilitate and speed up human work, especially in the process of determining the grain size distribution of soil in a civil building plan. Its utilization has been widely used to study, analyze, and understand the structure and framework of the soil. Image analysis is carried out as an initial or fundamental step in image processing to discover and comprehend information. With so many image segmentation methods, it is necessary to conduct research to determine which method is best for sandy soil image segmentation based on one of the image segmentation quality criteria, namely gaussian image noise. By testing the watershed transform method and the Otsu thresholding method as two of the area-based methods that are considered suitable for segmenting sandy soil images before and after distorted Gaussian noise based on the calculation of the mean square error (MSE) value.The results showed that the watershed transform method is better for segmenting sandy soil images when compared to the Otsu thresholding method. This is indicated by the average squared error (mse) of 3.08 for the watershed transform method and 4.09 for the Otsu Thresholding method. In addition to the comparison of quality tests of sandy soil based on gaussian noise with standard deviation values of normal distribution and noise intensities of 10, 20, and 30, it proves that the watershed transform method is still better at segmenting noise-distorted sandy soil images than the Otsu thresholding method. However, in terms of processing time, the Otsu Thresholding method is faster or better than the Watershed Transform method. of the results or conclusions brief. There are no citations, tables or figures in abstract.
Effect of Fabricated Twin Roller Arrangement of Chassis Dynamometer on Measurement of Performance Parameters of Electric Two Wheelers
Authors:   M.Tech. Student, Department of Mechanical Engineering, Vishwakarma Institute of Technology, Pune (Maharashtra), India, Gaikwad Mr. Parag Vitthal , Walame Dr.Mahesh ,   Professor, Department of Mechanical Engineering, Vishwakarma Institute of Technology, Pune (Maharashtra), India
Published: February 2023

The majority of vehicle dynamometer test rigs available in the market are constructed rigidly, which can test vehicles with a very narrow range of specifications, so there is a need for provision for load compensation to simulate the vehicle in order to test different vehicles & enhance the quality of measured results. The fabricated twin roller arrangement improves tire-roller contact and the provision for balancing system inertia with the inertia of the vehicle improves the accuracy of results during testing & makes the chassis dynamometer system a versatile test rig to test different vehicles and test parameters like speed, acceleration, brake force and brake distance, etc. A light weight and low base inertia fabricated twin roller arrangement is designed in the present study, and an inertia flywheel arrangement is connected to it for load compensation during acceleration, and an experiment is performed by loading an electric two-wheeler onto a two-roller setup to evaluate its performance. After testing an electric vehicle, the maximum speed and acceleration were determined to be 95 km/h and 3.65 m/s², respectively, and the brake force was 279.8 N with a braking distance of 7.48 m when applied from a speed of 20 km/h to zero. The obtained results were precise due to vehicle stability, provision for load compensation for vehicle simulation, and use of a mechanical inertia simulation using a flywheel in this test rig, which can be used to test different vehicles with a wide range of test specifications.
Maximization of Contractor Business Competencies Resulting from Project Team Competencies
Authors:   Department of Construction Management,Mass Rapid Transit Authority of Thailand, Bangkok Thailand, Kawesittisankhun Dr. Kittipos , Pongpeng Dr. Jakrapong ,   Department of Civil Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok Thailand
Published: February 2023

Under the current circumstances of highly competitive business operations, contractors should allocate their resources to develop the project team competencies, then leading to the improvement of the contractors’ business competencies. A question is how the contractors’ limited resources should be allocated to develop the project team competencies and thus maximize the contractor's business competencies. A literature review shows that few research works have addressed this question, showing a knowledge gap that should be filled. Therefore, this research aimed to answer this question by developing a linear programming model that suggests optimal resource allocation to improve the project team competencies. A survey case study in the Thai construction industry was used to illustrate the model application. The results of the model application show that the optimal proportion of resource allocation to develop the project team competencies should be as follows: physical health (32.80%), communication (16.30%), knowledge (15.60%), decision-making (10.60%), relationship management (9.80%), systematic construction work (9.80%), and systematic management (5.20%). These results can be used as a suggestion for the contractors’ optimal resource allocation to develop their project team competencies and maximize contractor business competencies.
An Immersive Virtual Reality Platform Integrating Human ECOG & sEEG: Implementation & Noise Analysis
Authors: Paschall Courtnie , Rao Rajesh P.N. , Hauptman Jason , G. Ojemann Jeffrey , Herron Jeffrey
Published: February 2023

  Virtual reality (VR) offers a robust platform for  human behavioral neuroscience, granting unprecedented  experimental control over every aspect of an immersive and  interactive visual environment. VR experiments have already  integrated non-invasive neural recording modalities such as  EEG and functional MRI to explore the neural correlates of  human behavior and cognition. Integration with implanted  electrodes would enable significant increase in spatial and  temporal resolution of recorded neural signals and the option of  direct brain stimulation for neurofeedback. In this paper, we  discuss the first such implementation of a VR platform with  implanted electrocorticography (ECoG) and stereo?electroencephalography (sEEG) electrodes in human, in-patient  subjects. Noise analyses were performed to evaluate the effect of  the VR headset on neural data collected in two VR-naïve  subjects, one child and one adult, including both ECOG and  sEEG electrodes. Results demonstrate an increase in line noise  power (57-63Hz) while wearing the VR headset that is mitigated  effectively by common average referencing (CAR), and no  significant change in the noise floor bandpower (125-240Hz). To  our knowledge, this study represents first demonstrations of VR  immersion during invasive neural recording with in-patient  human subjects.  
CNN-based Visual Servoing for Simultaneous Positioning and Flattening of Soft Fabric Parts
Authors: Tokuda Fuyuki , Seino Akira , Kobayashi Akinari , Kosuge Kazuhiro
Published: February 2023

This paper proposes CNN-based visual servoing for simultaneous positioning and flattening of a soft fabric part placed on a table by a dual manipulator system. We propose a network for multimodal data processing of grayscale images captured by a camera and force/torque applied to force sensors. The training dataset is collected by moving the real manipulators, which enables the network to map the captured images and force/torque to the manipulator’s motion in Cartesian space. We apply structured lighting to emphasize the features of the surface of the fabric part since the surface shape of the non-textured fabric part is difficult to recognize by a single grayscale image. Through experiments, we show that the fabric part with unseen wrinkles can be positioned and flattened by the proposed visual servoing scheme.
Robot End-effector for Fabric Folding
Authors: Seino Akira , Terayama Junya , Tokuda Fuyuki , Kobayashi Akinari , Kosuge Kazuhiro
Published: February 2023

In this paper, we propose a robot end-effector for fabric folding of a fabric part of a garment along a straight line. In the garment production process, some of the edges of fabric parts of a garment need to be folded before sewing. Conventional automated folding system has a fixture designed for each folding fabric part and operation. The fixture is not universal and needs to be redesigned when the shape of the folded fabric part changes. In this paper, we consider performing fabric folding without using a fixture. We propose a concept of a robot end-effector for fabric folding of a fabric part along a straight fold line and develop a prototype of an end-effector referred to as“ F-FOLD ”(Free-form FOLDing). Folding of the edge of a fabric part is achieved by moving FFOLD along the desired straight fold line. Experimental results illustrate how F-FOLD works to fold a fabric part along a straight line.
A Learning-Based End-to-End Wireless Communication System Utilizing a Deep Neural Network Channel Module
Authors: Ji Zhanlin , Ganchev Ivan
Published: February 2023

The existing end-to-end (E2E) wireless communication systems require fewer communication modules and have a simple processing signal flow, compared to conventional wireless communication systems. However, in the absence of a differentiable channel model, it is impossible to train transmitters, used in such systems, which makes impossible to get optimal system performance. To solve this problem, an E2E wireless communication system, learned with conditional generative adversarial networks (CGANs) for channel modeling, has been proposed recently. Unfortunately, the CGAN training is prone to instability, slow convergence, and inaccurate channel modeling, which affects the system performance. To this end, a learning-based E2E wireless communication system, utilizing a deep neural network (DNN) channel module to model an unknown channel, is proposed in this paper. Simulation results show that the proposed DNN channel modeling has faster convergence, simpler network structure, and can reflect the behavior of real channels more accurately. In addition, the proposed E2E wireless communication system performs better, in terms of bit error rate (BER) and block error rate (BLER), than the E2E wireless communication system, using CGAN as unknown channel, and a traditional communication system, designed based on the prior knowledge of the channel. Compared to these two systems, at high signal-to-noise ratio (SNR) values, the proposed system can achieve a SNR gain of at least 2 dB, in communication scenarios involving frequency-selective multi-path channels.
Demonstration of Mitigating Non-Linear Distortions using Deep Neural Networks for Vehicular VLC
Authors: K S Abhaynarasimha , Vakamulla Venkata Mani , Sellathurai Mathini
Published: February 2023

In this paper, we present a hardware implementation of a Deep Neural Network (DNN) based receiver for Vehicular Visible Light Communication (VVLC) application. The presented system can combat the effects such as non-linear behavior, attenuation at higher frequencies, ambient noise, and property differences observed in high-power Commercial-off-the-shelf Light Emitting Diodes (LED).
Combining virtual synchronous machine and feedforward torque control for doubly-fed induction machine based wind energy conversion systems
Authors: Thommessen Andre , Hackl Christoph
Published: February 2023

With the decreasing number of directly grid-connected synchronous machines (SMs) forming the grid voltage, the risk of power system instability increases, especially regarding the grid frequency due to the decreasing power system inertia. Grid-forming (GFM) control of inverter based resources (IBRs) with inertia emulation capability is required to face these challenges and to guarantee reliable operation of the future power system. This paper proposes virtual synchronous machine (VSM) control for doubly-fed induction machine (DFIM) based wind energy conversion systems (WECS) that (i) enables feedforward torque control (FTC) and thus, does not degrade the WECS performance during normal operation, (ii) adapts the VSM damping based on the DFIM operating point, and (iii) protects the VSM against overloading to avoid loss of synchronism.
The affirmative answer to Singer's conjecture on the algebraic transfer of rank four
Authors: Võ Phúc Đặng
Published: February 2023

In recent decades, the structure of the mod-2 cohomology of the Steenrod ring $\mathscr A$ has become a major subject of study in the field of Algebraic Topology. One of the earliest attempts to study this cohomology through the use of modular representations of the general linear groups was the groundbreaking work [Math. Z. \textbf{202} (1989), 493-523] by W.M. Singer. In that work, Singer introduced a homomorphism, commonly referred to as the "algebraic transfer," which maps from the coinvariants of a certain representation of the general linear group to the mod-2 cohomology group of the ring $\mathscr A.$ Singer's conjecture, in particular, which states that the algebraic transfer is a monomorphism for all homological degrees, remains a highly significant and unresolved problem in Algebraic Topology. In this research, we take a major stride toward resolving the Singer conjecture by establishing its truth for the homological degree four.
Modeling of Asymmetrical Grid Faults for P-HIL Accuracy and Stability Analysis in LVRT Tests
Authors: Pugliese Sante , Liserre Marco , Rafiq Muhammad Usman
Published: February 2023

The energy systems are evolving toward the comprehensive and massive integration of power electronics-based technologies, such as photovoltaic, wind turbines, and electric vehicles. All these emerging and promising power converters technologies must be tested to comply with the grid codes, especially during severe grid fault events, before their commercialization. Low-Voltage Ride-Through (LVRT) field tests are usually conducted to prove the ability of the converter to ride through faults. These field tests are expensive and require bulky equipment, while Power-Hardware-in-the-Loop (P-HIL) offers a more cost-effective and flexible alternative. However, the P-HIL must be stable and accurate to get reliable results. The accuracy of a P-HIL test is directly influenced by its interface algorithm. This paper proposes a frequency domain approach, based on the concept of singular values in Multi-Input Multi-Output systems, to study the P-HIL accuracy and stability in grid connected converter testing under asymmetrical line-to-line fault conditions. Accuracy and stability analysis have been performed analytically and validated by Matlab/Simulink simulations and by experimental P-HIL tests. This paper demonstrates that correct fault modeling leads to correct assessment of the reactive power injected under faults and of avoiding resonances.
Multi-Channel Data Transmission with X Wave and Bessel Pulses
Authors: Lu Jian-yu
Published: February 2023

This paper uses X wave and Bessel pulses for multi-channel ultrasound data communications. The method can be extended to optical and electromagnetic data communications and other areas. Implications of X wave in other areas such as quantum mechanics (deBroglie waves) are discussed. 
Multi-Channel Data Transmission with X Wave and Bessel Pulses
Authors: Lu Jian-yu
Published: February 2023

This paper uses X wave and Bessel pulses for multi-channel ultrasound data communications. The method can be extended to optical and electromagnetic data communications and other areas. Implications of X wave in other areas are discussed. 
Adaptive-Output-Voltage-Regulation-Based Solution for the DC-Link Undervoltage of Grid-Forming Inverters
Authors: Luo Cheng , Ma Xikui , Liu Teng , Wang Xiongfei
Published: February 2023

This paper proposes an adaptive-output-voltage regulation (AOVR) based solution to alleviate the dc-link undervoltage for grid-forming (GFM) inverters. First, it is shown that large disturbances may cause the dc-link undervoltage for GFM inverters threatening the safe operation of the system. To tackle this issue, an AOVR-based control strategy is proposed, where the main idea is to reduce the output voltage of the GFM inverter and also speed up the dynamic process of the power angle by intentionally enlarging the frequency deviation of the active power control loop. By doing so, the dc-link output energy will reduce to avoid possible undervoltage. The parameter design of the proposed method is based on the overmodulation constraints, and an auxiliary module is configured for the low-voltage-ride-through (LVRT) requirements. The applicability of the proposed solution is also checked when considering the overcurrent limitation. The effectiveness of the proposed control strategy is finally confirmed by the experimental tests. 
Cosmic Muon Rates and Neutron Background in a Backpack Radiation Detection System
Authors: Pausch Guntram , Kong Yong , Kreuels Achim , Lentering Ralf , Schaedler Boris , Scherwinski Falko , Wolf Andreas , Stein Jürgen
Published: February 2023

Radiation detection systems for security applications are often equipped with neutron sensors and required to promptly respond with an alarm if the neutron flux exceeds the background level. As the ambient neutron flux is essentially caused by cosmic radiation, this background could be evaluated by assessing the rate of muons crossing the gamma-ray detector which is comprised in such systems anyway. A study performed with a commercial Backpack Radiation Detection System (BRD) demonstrates the feasibility of this approach, supposed the gamma spectrometer is capable of discriminating muon signals from energetic events caused by the gamma-ray cascades following neutron captures. This requires a dynamic range exceeding the usual 3-4 MeV. The instrument used provided standard spectroscopy up to 10 MeV and facilitated charge-loss compensated spectroscopy up to 1 GeV, which allowed a separate assessment of normal gamma events (< 3 MeV), neutron-capture gamma events (3-7 MeV), and muon events (> 10 MeV). In this case, the rate of neutron-capture gamma events can be used as a neutron indicator on its own, while the muon rate signals the ambient neutron background level.
Training Postural Balance Control with Pelvic Force Field at the Boundary of Instability
Authors: Omofuma Isirame , Santamaria Victor , Ai Xupeng , Agrawal Sunil
Published: February 2023

This articles discusses the use of the Robotic Upright Stand Trainer (RobUST), a cable driven exoskeleton that actuates the trunk and pelvis independently, for postural balance control training. It examines the changes that occur in healthy patients after a perturbation based balance training session conducted in virtual reality. In addition, there are two testing conditions tested. In one condition subjects are given assistive support at the pelvis by RobUST to help resist perturbations and in the other, there is no assistive support. Data collected include electromyographic data from lower limb muscles, movement and variability of movement data. 
RadPleura: a Radiomics-based Framework for Lung Pleura Classification in Histology Images from Interstitial Lung Diseases
Authors: Cuadros Linares Oscar , Belizario Ivar Vargas , Batah Sabrina Setembre , Hamann Bernd , Fabro Alexandre Todorovic , Traina Agma J. M.
Published: February 2023

The diagnostic approach of interstitial lung diseases (ILDs) may be a challenge and requires a multidisciplinary discussion (MDD). While the definition of histological patterns of surgical lung biopsy by pathologists is helpful to the final diagnosis of MDD, its recognition could be challenging due to various degrees of lung remodeling and distortion. The pleura is a reference structure to identify some histological findings for the recognition of a pathological ILD pattern. When a pattern is found, it is important to know whether it is close to the pleura to determine its specific type and severity. This manual process is a tedious and laborious one for the pathologist. Automating this task is important for a complete computed-system-assisted ILD diagnostic process. We introduce ``RadPleura'' a framework for pleura classification of histopathological images using a radiomics-based approach. Our framework performs image pre-processing, region-of-interest segmentation, and extraction of a radiomic-signature fitted to  ILD classification. To evaluate the radiomic-signature, we classified it into pleura and non-pleura, using two classifiers: Support Vector Machine and Gradient-boosted Decision Trees. Our experiments yield promising results, with F-scores of 92% for SVM, and 91% for GBD. We also created a dataset of lung histopathology images with respective ground truth for pleura classification. To the best of our knowledge, this study is the first disclosed attempt to explore and develop a radiomic-signature for pleura classification. The methods and techniques are integrated into the RadPleura framework developed.
Loss Mask is all Your Need
Authors: Li Shun , Zhu Mengshi
Published: February 2023

 In this paper, we propose an idea to improve various types of loss functions. It is different from the current idea of balancing the errors by increasing the number of input samples in each batch. We directly mask the top values of the error ranking to zero. During the error back-propagation, this means that the samples corresponding to that loss will not affect the parameter update of the network. In other words, even if a small number of samples are artificially mislabeled, it will not theoretically have much impact on the performance of the network. Instead, deliberately discarding anomalous losses will help smooth the training of the network. We conduct experiments on several regression and classification tasks, and the results show that the proposed method in this paper can effectively improve the expected performance of the network.  
التأمين ونظام العاقلة
Authors: پور حسين
Published: February 2023

يعدُّ دَفعُ الضّرر عندَ حدوث الأحداث والأمور المفاجئة مِن جملة الأمور التي شغلت بالَ الإنسان دوماً، وقد كان مثلُ هذا الأمر وأضرابه في الأيام السالفة يطلق عليه نظامُ العاقلة ويتم معالجته عبرَ الأسرة و ورثة الشخص وذلك لتعود حالة الفرد المتضرر إلي قبل الضرر وحُدوث الحادث. وهذا النوع من النظام قد أقرّه الإسلام إلا أنّ تطور التكنولوجيا وعجزَ نظام العاقلة عن حلّ كافة القضايا أدي إلي بروز صنعة التأمين. لكن التأمين هذا قد رآه بعضُ الفقهاء معارضاً مع بعض مباديُ الفقه فخالفوه وأدرجُوه ضمن نظام العاقلة. فهذا البحث عبر عقد الموازنة بين صنعة التأمين ونظام العاقلة اَثبت أن التأمين ونظام العاقلة بالرغم من التشابه القائم بينهما إلا أنهما مختلفان في التعريف والموضوع والصنعة والجوهر؛ بحيث يمكن أن توصف النسبة التي بينهما أنها عموم وخصوص من وجه، ذلك أن موضوع ونطاق التأمين أوسع بكثير عن نظام العاقلة كما أن التأمين عقد مستقل وشرعي ولاموجب يدعو لإدراجه تحت مُسمّي آخر كنظام العاقلة وغيره
حقيقة التوكل على الله في القرآن الكريم
Authors: الشمرتي لمياء
Published: February 2023

ان التوكل غلى الله الذي يعني في حقيقته التعلق التام بالله لمن المفاهيم الاسلامية التي حض عليها القرآن، كون التوكل قرين الايمان، وانه أحد المقامات التي تعكس مدى العبودية والتوحيد التي يعيشها الانسان المسلم.وان من ثمرات التوكل على الله التأسي بالأنبياء والرسل، وبلوغ حقيقة الايمان، فضلا عن الشعور بالطمأنينة والسكينة التي يسعى الانسان الى تحصيلها في مسيرته الروحية ، كونه يمد الانسان بكافة أسباب القوة والمنعة.وأن ثمة حجب وموانع تحول دون التوكل، أبرزها حجاب العجب بالنفس وحب الذات والكبر وضعف اليقين بالله، ذلك لان التوكل مراتب تختلف باختلاف مقامات العباد، أدناها تكرار الادعية والاذكار كألفاظ، وأسماها أن يعيش العبد بقلبه وجوارحه حالة التعلق بالله ليصل من خلالها الى حقيقة التوكل.
PENURUNAN KADAR SURFAKTAN, NITROGEN DAN PHOSPAT AIR LIMBAH DOMESTIK DENGAN ECO ENZIM
Authors: WIDYASTUTI SRI , Rhenny Ratnawati  , Sugito  , Yoso Wiyarno  , Pungut
Published: February 2023

Tujuan penelitian adalah untuk mengetahui pengaruh pengaplikasian eco enzyme terhadap kadar surfaktan, nitrogen dalam bentuk ammonia, nitrit dan nitrat serta phospat pada air limbah domestik.  

Penelitian dilakukan dengan cara  mencampurkan eco enzim dengan konsentrasi 0 % (R1),  10% (R2), 20% (R3) dan 25% (R4).  Pengambilan sampel pada hari ke -0, ke-3, ke-6, ke-9, ke12 dan ke-15.

Hasil penelitian menunjukkan, konsentrasi eco enzim yang paling efektif untuk menurunkan kadar adalah pada konsentrasi 25 %. Kadar surfaktan turun sebanyak 0,77%, kadar nitrit turun sebanyak 0,79 % , kadar nitrat turun sebanyak 0,85 %, kadar amonia turun sebanyak 0,96% dan kadar phospat turun sebesar 0,92%. Secara keseluruhan penurunan belum memenuhi baku mutu yang sesuai dengan Lampiran III Peraturan Gubernur Jawa Timur Nomor 72 Tahun 2013 untuk Limbah Domestik di Pemukiman.
Infecções sexualmente transmissíveis em universitários: Uma revisão de literatura
Authors: Da Silva Coelho e Oliveira Regiane Aparecida , Cavalcanti Catão Maria Aparecida , Martelleto Teixeira de Paula Isabella , Trindade de Souza Layane , Jerônimo Costa Sérgio Eduardo , Jerônimo Costa Marcos Antônio
Published: February 2023

Objetivo: Realizar o levantamento bibliográfico para verificação do comportamento sexual de risco em estudantes universitários. Método: trata-se de uma revisão de literatura nas bases de dados: Medical Literature Analysis and Retrieval System Online (MEDLINE via PubMed), Ebsco, Literatura Latino-Americana e do Caribe em Ciências da Saúde, Web of Science e SCOPUS. Resultados: Foram encontrados 52 artigos, resultando em 10 amostras publicadas entre os anos de 2008 e 2017. Discussão: Com a conclusão do ensino médio, muitos jovens ingressam nas instituições de ensino nível técnico e superior, vivenciando uma fase de novas experiências. Diante da liberdade, entram em grupos sociais, se relacionam, e, apesar de alguns praticarem sexo seguro, outros apresentam comportamentos de risco. Conclusão: Existe uma necessidade de intervenções e educação em saúde para todas as faixas etárias sobre as circunstâncias que acarretam a transmissão de Infecções sexualmente transmissíveis e métodos de prevenção.
Dificuldades do atendimento ginecológico para o homem trans: Uma revisão integrativa
Authors: Crispiniano Ferreira da Silva Yanna Georgia , Scolfild Rodrigues da Silva Liniker
Published: February 2023

Objetivo: Analisar as evidências científicas disponíveis na literatura acerca das dificuldades do atendimento ginecológico para o homem trans. Método: Trata-se de uma revisão integrativa. Realizou-se a busca por artigos; delimitação entre 2008-2022 nos idiomas português, inglês e espanhol; disponíveis na íntegra. Nas seguintes plataformas de dados: DOAJ, LILACS, MEDLINE, SciELO, SCOPUS e Web of Science. Resultados: Os dados foram organizados e apresentados em figuras e tabelas. Dos 105 estudos encontrados, 1 estava disponível na DOAJ, 1 na LILACS, 14 na MEDLINE, 0 na SciELO, 0 na SCOPUS e 89 na Web of Science. Contudo, após a leitura permaneceram apenas os que atendiam aos critérios para inclusão e exclusão descritos na metodologia, 7 estudos. Conclusão: Este estudo evidenciou que os serviços de saúde não estão capacitados para atender homens trans, principalmente aqueles que prestam atendimento ginecológico. Indicando a necessidade de educação permanente para alcançar uma assistência inclusiva, humanizada e de qualidade.
Ferramentas utilizadas para diagnóstico de sarcopenia em idosos: Revisão integrativa
Authors: De Souza Barros Regina , De Souza Marques Ana Heloisa , Barros Tavares Renilde , Fonseca da Silva Raliele , Santana Carvalho Aurenívia , Da Costa Barreto Beatriz , Silva de Jesus Brenda Miliane , Wesley Moisés
Published: February 2023

Objetivo: levantar dados acerca das principais ferramentas utilizadas para o diagnóstico de sarcopenia em idosos, publicados de janeiro de 2017 a março de 2022. Método: Revisão integrativa, seguindo seis etapas preconizadas e usando PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses). Foram examinados artigos publicados entre 2017 e 2022 que relacionassem ferramentas para diagnóstico de sarcopenia nas bases de dados Medline e Cochrane em inglês, português e espanhol, sendo organizados conforme título, ano, país de publicação, fator de impacto do periódico. Resultado: Os 10 artigos indicam o papel de várias áreas do conhecimento, enfatizando que a sarcopenia em idosos tem caráter multidimensional, existindo a necessidade de convergência de conhecimentos. Conclusão: Conforme os achados na literatura, as ferramentas ainda estão em aprimoramento e sendo utilizadas para a avaliação em idosos, ainda de forma incipiente, contudo, ferramentas do novo consenso, já estão servindo como unificação das linguagens entre os pesquisadores.