bluuebunny/crossref_metadata_2025 huggingface dataset:
Directive Multiband Antenna Based on Rectangular Loop Array and Dumbbell-Shaped Slot Radiator
Authors: Tirado-Mendez Jose Alfredo , Jardon-Aguilar Hildeberto , Flores-Leal Ruben , Vasquez-Toledo Luis Alberto , Rangel-Merino Arturo , Marcelin-Jimenez Rricardo , Rodriguez-Colina Enrique , Pascoe-Chalke Michael
Published: October 2021

In this article, a combination of rectangular loop array and slot radiator for multiband applications is presented. The antenna is configured by arranging, concentrically, a set of rectangular loop radiators excited by electromagnetic coupling provided by a dumbbell slot. The size of the loops is calculated to obtain the desired resonant frequencies, which are almost independent of the adjacent rings. The exciting slot is designed to operate in a wideband frequency range to cover the upper desired resonance. In addition, to obtain directive radiation patterns, a reflector shaped like a box is introduced, giving a stable gain, radiation pattern shape, and port matching at the selected frequencies. The configuration presents great results, since to the authors’ knowledge, even a similar configuration given in the open literature presents some disadvantages compared to this one; moreover, not just any structure can be employed as the resonating elements, obtaining multiband behavior at the same time.
Deceptive Online Content Detection Using Only Message Characteristics and a Machine Learning Trained Expert System
Authors: Liang Xinyu (Sherwin) , Straub Jeremy
Published: October 2021

This paper considers the use of a post metadata-based approach to identifying intentionally deceptive online content. It presents the use of an inherently explainable artificial intelligence technique, which utilizes machine learning to train an expert system, for this purpose. It considers the role of three factors (textual context, speaker background, and emotion) in fake news detection analysis and evaluates the efficacy of using key factors, but not the inherently subjective processing of post text itself, to identify deceptive online content. This paper presents initial work on a potential deceptive content detection tool and also, through the networks that it presents for this purpose, considers the interrelationships of factors that can be used to determine whether a post is deceptive content or not and their comparative importance.
Evaluation of User-Prosthesis-Interfaces for sEMG-Based Multifunctional Prosthetic Hands
Authors: Fajardo Julio , Maldonado Guillermo , Cardona Diego , Ferman Victor , Rohmer Eric
Published: October 2021

The complexity of the user interfaces and the operating modes present in numerous assistive devices, such as intelligent prostheses, influence patients to shed them from their daily living activities. A methodology to evaluate how diverse aspects impact the workload evoked when using an upper-limb bionic prosthesis for unilateral transradial amputees is proposed and thus able to determine how user-friendly an interface is. The evaluation process consists of adapting the same 3D-printed terminal device to the different user-prosthesis-interface schemes to facilitate running the tests and avoid any possible bias. Moreover, a study comparing the results gathered by both limb-impaired and healthy subjects was carried out to contrast the subjective opinions of both types of volunteers and determines if their reactions have a significant discrepancy, as done in several other studies.
The Vulnerability of the Power Grid Structure: A System Analysis Based on Complex Network Theory
Authors: Xie Banghua , Tian Xiaoge , Kong Liulin , Chen Weiming
Published: October 2021

The safety and reliability of the power grid are related to national power security, economic development and people’s daily life. The occurrence of extreme weather changes the external environment greatly. Including generators and transmission lines, many power grid units cannot resist such a huge attack and get damaged easily, which forces units to quit from the power grid running system for a while. Furthermore, if the number of influenced units is high enough, the whole power system will be destroyed by cascading failure caused by extreme weather. Aiming at dealing with the cascading failure emergencies, this paper is trying to improve the traditional power structural vulnerability model so that it can be used to discuss extreme weather and propose a theoretical topological model to help scholars measure the damage caused by extreme cases. Based on previous research in this field, this paper utilizes complex network knowledge to build the power grid topology model. Then, considering extreme cases and the three attack modes simulation process, this paper makes use of the characteristic parameters of the power grid topology model and designs an algorithm, according to the realistic situation of the propagation mechanism of cascading failure of the power grid model as well as extreme weather research. Finally, taking IEEE-30 and IEEE-118 node bus system as examples, which shows that the structural vulnerability method proposed in this paper can properly address the mechanism of unbalanced load of cascading failure of power grid units under extreme conditions and can provide theoretical reference for preventing and reducing the impact of extreme cases on power grid which improves the reliability of the power grid.
Improving the Ability of a Laser Ultrasonic Wave-Based Detection of Damage on the Curved Surface of a Pipe Using a Deep Learning Technique
Authors: Yu Byoungjoon , Tola Kassahun Demissie , Lee Changgil , Park Seunghee
Published: October 2021

With the advent of the Fourth Industrial Revolution, the economic, social, and technological demands for pipe maintenance are increasing due to the aging of the infrastructure caused by the increase in industrial development and the expansion of cities. Owing to this, an automatic pipe damage detection system was built using a laser-scanned pipe’s ultrasonic wave propagation imaging (UWPI) data and conventional neural network (CNN)-based object detection algorithms. The algorithm used in this study was EfficientDet-d0, a CNN-based object detection algorithm which uses the transfer learning method. As a result, the mean average precision (mAP) was measured to be 0.39. The result found was higher than COCO EfficientDet-d0 mAP, which is expected to enable the efficient maintenance of piping used in construction and many industries.
Quality Evaluation of Rock Mass Using RMR14 Based on Multi-Source Data Fusion
Authors: Zhang Qi , Jiang Qing , Li Yuanhai , Wang Ning , He Lei
Published: October 2021

The uncertainties in quality evaluations of rock mass are embedded in the underlying multi-source data composed by a variety of testing methods and some specialized sensors. To mitigate this issue, a proper method of data-driven computing for quality evaluation of rock mass based on the theory of multi-source data fusion is required. As the theory of multi-source data fusion, Dempster–Shafer (D-S) evidence theory is applied to the quality evaluation of rock mass. As the correlation between different rock mass indices is too large to be ignored, belief reinforcement and Murphy’s average belief theory are introduced to process the multi-source data of rock mass. The proposed method is designed based on RMR14, one of the most widely used quality-evaluating methods for rock mass in the world. To validate the proposed method, the data of rock mass is generated randomly to realize the data fusion based on the proposed method and the conventional D-S theory. The fusion results based on these two methods are compared. The result of the comparison shows the proposed method amplifies the distance between the possibilities at different ratings from 0.0666 to 0.5882, which makes the exact decision more accurate than the other. A case study is carried out in Daxiagu tunnel in China to prove the practical value of the proposed method. The result shows the rock mass rating of the studied section of the tunnel is in level III with the maximum possibility of 0.9838, which agrees with the geological survey report.
KEPUASAN PENGGUNA ATAS LAYANAN WEBSITE DITINJAU DARI ASPEK DESAIN WEB DAN KUALITAS INFORMASI PADA WEBSITE
Authors: Rahmi Palupi Permata
Published: October 2021

Penelitian ini membahas tentang pentingnya pemanfaatan internet untuk meningkatkan daya saing dengan perguruan tinggi lain. Sekolah Tinggi Ilmu Ekonomi (STIE) INABA Bandung memiliki website yaitu www.inaba.ac.id yang berfungsi sebagai media komunikasi yang dapat memberikan informasi bagi mahasiswa, dosen, dan masyarakat umum. Penelitian ini dilakukan untuk menganalisis pengaruh desain website dan kualitas informasi terhadap kepuasan pengguna atas layanan website dengan menyebarkan 39 angket kepada mahasiswa pascasarjana semester 1 tahun akademik studi manajemen 2020 sebagai responden. Penelitian ini menggunakan metode kuantitatif. Menggunakan model metode persamaan struktural - partial least square SEM - PLS. Penelitian menunjukkan bahwa desain website dan kualitas informasi mempengaruhi kepuasan pengguna atas layanan website.

Kata Kunci: Kepuasan Pengguna, Desain Web, Kualitas Informasi, Nilai Inovasi, Teknologi, SEM, PLS.
PESO DA MOCHILA ESCOLAR E SUA INFLUÊNCIA NO DESENVOLVIMENTO DE ALTERAÇÕES POSTURAIS EM ESTUDANTES DE UMA REDE PRIVADA DE ENSINO
Authors: Gomes Tarcísio Pereira Silva , Silva Gisele Priscilla de Barros Alves , Barros Dayane de Melo , de Moura Danielle Feijó , da Silva Lucimara Martins , Rocha Tamiris Alves , Gomes Milca de Vasconcelos , Ferreira Silvio Assis de Oliveira , da Costa Maurilia Palmeira , Leite Diego Ricardo da Silva , Diniz Marcelino Alberto , Freitas Thiago da Silva , dos Santos Jadson Antonio Silva , Melo Marcela de Albuquerque , Carvalho Michelle Figueiredo , Melo Nicole Sotero , Alves Tallyta Miranda , de Macedo Jose Emerson Tavares , da Costa Maurianny Palmeira , dos Santos Claudinelly Yara Braz
Published: October 2021

Os períodos de transição entre a infância e a adolescência, no decorrer do processo de desenvolvimento do corpo humano, apresentam-se como fatores expressivos no desencadeamento de problemas posturais, devido ao fato de estruturas anatômicas da coluna vertebral serem submetidas a fatores externos prejudiciais a estruturação postural. Além disso, outro fator que se evidencia como importante agravante dessas alterações posturais é a sobrecarga do peso de mochilas, a qual são expostos os estudantes durante a rotina escolar. Em vista disso, objetivou-se verificar o peso de mochilas dos escolares e a repercussão de sua influência no desenvolvimento de alterações posturais em crianças do 5º ano do ensino fundamental I. Para o desenvolvimento do estudo, foram coletados dados de alunos de uma escola da rede privada de ensino, por meio do TCLE, com uma amostragem de 38 crianças, as quais foram submetidas a pesagens individuais em balança digital, assim como, as mochilas de cada um deles, onde se verificou a relação do peso corpóreo com o peso das mochilas. Mediante a análise dos dados obtidos, verificou-se que, 52,63% dos escolares carregam a mochila com uma sobrecarga maior que 10% do seu peso corpóreo. Frente a isso, observa-se que os escolares estão propensos a desenvolverem problemas posturais, comprometendo assim, a saúde e qualidade de vida a longo prazo. Em vista disso, a avaliação desses hábitos inadequados relacionados ao uso da mochila com excesso de peso é de fundamental importância para que sua correção seja realizada precocemente, impedindo assim, que as alterações posturais tornem-se permanentes.
HUMANITARIAN-ORIENTED TEACHING OF MATHEMATICS AND NATURAL SCIENCES AT SCHOOL
Authors: Ismagilova R.R. , Akhmetshina G.Kh.
Published: October 2021

The humanitarian potential of school mathematics and natural science disciplines for the education of a person who has a unified representation of the modern picture of the world, its scope and content require more and more study. The humanities-oriented teaching of mathematics and natural sciences at school is implemented in the learning process within the framework of traditional academic disciplines and has the full means for the comprehensive and harmonious development of the student's personality. The use of components of literature, language, history of the native land in the implementation of programs of mathematical, natural science education contributes to the development of interest in learning, the formation of personal values of students. Cognitive interest is created and maintained through the design of problem situations in the classroom, through the development of the ability to solve, develop plot problems that form functional (mathematical and natural science) literacy. The combination of natural science and humanitarian approaches in the representation and assessment of the world in the process of mastering the content of educational disciplines will spiritually enrich every student.
INCLUSIVE LEARNING INTERACTION MANAGEMENT IN VOCATIONAL PHILOLOGICAL TRAINING ON BACELOR's DEGREE LEVEL
Authors: Brim N.E. , Milyutinskaya N.Yu.
Published: October 2021

The present article suggests the way of inclusive learning interaction management based on Convention on the Rights of Persons with Disabilities (CRPD), Russian Federation Federal acts, humanistic, person centered, communicative and activity centered approaches as well as ‘universal design’ training. Interaction efficiency is achieved by pedagogical environment identification and grounding in psychological, technological, cognitive and linguistic units. Based on expert evaluation and the method of observation, the authors analyze the activities of teachers and students with and without disabilities in the process of foreign language learning. Some ways of pedagogical support of educational interaction in problem-based situations are proposed; attention is paid to the choice of optimal educational resources: teaching methods, forms and aids, aimed at intellectual, cultural, moral, socio-professional development of the future specialist. In addition, training resources are oriented on coping with stereotypes, respect to others and mutual enrichment.
TEACHING COMMUNICATION SKILLS TO MEDICAL STUDENTS
Authors: Pomytkina T.Yu.
Published: October 2021

In connection with the necessity of formation of communicative skills of the future doctor there is an actual question on methodology of formation of skills of the future doctor with patients, namely: what experts (teachers of what departments), when and how should form communicative skills of the future doctor. The purpose of this study is to substantiate the most effective forms and methods of the educational process in the formation of communication skills of the future doctor. 87 % of teachers of clinical departments who participated in the study believe that it is necessary to teach communication skills to medical students from the 1st year of medical school. The most effective they recognize the joint training within the modular discipline using the "standardized patient" method, which, in turn, requires the joint development of clinical scenarios, checklists and other methodological materials to create a database of "clinical cases" for each medical specialty.
Memórias indecifráveis em Írizs: as orquídeas, de Noemi Jaffe
Authors: Pinto André de Souza
Published: October 2021

No romance Írisz: as orquídeas, de Noemi Jaffe, publicado em 2015, uma imigrante húngara que se muda para o Brasil, abandonando, nesse movimento, sua terra natal, sua mãe e um companheiro. Em São Paulo, no Jardim Botânico, a narradora dedica-se ao estudo das orquídeas, flores que serão metáfora dessa personagem flutuante e exilada, cujas raízes aéreas e parasitárias caracterizam o seu caráter errático. Além disso, aliado à mutabilidade da protagonista, que evita enraizar-se nos lugares, o seu estudo sobre as orquídeas traduz uma análise da língua, um traço que parece marcar a narrativa de Írisz. Desse modo, esta comunicação analisará, a partir das orquídeas, a ficcionalização de uma história familiar e a elaboração de memórias fragmentadas, dispersas e indecifráveis.
Ser judeu e estar no Brasil no século 20 em Moacyr Scliar e Clarice Lispector
Authors: Chaimovitch-Yehoshafat Debora
Published: October 2021

Na primeira metade do século XX, o Brasil recebeu imigrantes, oriundos dos mais variados países, o que, sem dúvida, marcou o desenvolvimento de sua sociedade e de sua cultura. No primeiro momento, o imigrante, e sua bagagem cultural, ainda conservou seus costumes tentando, ao mesmo tempo, adaptar-se à nova sociedade. Entre os imigrantes que chegaram ao Brasil, encontram- se os judeus provindos da Europa e Oriente Médio. Muitas vezes, a imigração é sinônimo de deslocamento, deixar um lugar e não pertencer a lugar nenhum. Esse sentimento está expresso em A guerra no Bom Fim, de 1972, de Moacyr Scliar, e em A hora da estrela, publicado em 1977, por Clarice Lispector. Esta comunicação estudará essa condição imigratório nos dois romances, considerando que o processo de imigração inclui etapas de adaptação, integração e assimilação.
alfabeto poético de Leonor Scliar-Cabral e Noemi Jaffe
Authors: Oliveira Késia
Published: October 2021

De Sagração do alfabeto, 2009, de Leonor Scliar-Cabral, a A verdadeira história do alfabeto e alguns verbetes de um dicionário, 2012, de Noemi Jaffe, a letra constitui um acervo de possibilidades poéticas e narrativas. Ao conceberem a letra como uma unidade mínima de sentido,as escritoras se inscrevem numa tradição de autores que veem no micro, as grandezas do múltiplo.Scliar-Cabral extrai do alfabeto hebraico inúmeras reverberações líricas, transformando letra empoesia, escandindo o sentido do único ao ampliar as conotações das letras. Jaffe, por sua vez, em prosa, redefine o significado da noção de história ao propor para cada letra do alfabeto latino uma inusitada linearidade. Esta comunicação analisa esses dois percursos literários no contexto das textualidades judaicas contemporâneas.
memória e a Torá
Authors: Grzybowski Adam , Goldman Luis
Published: October 2021

A memória e a Torá
Edukasi dan Pelatihan Kewirausahaan Pembuatan Jamu untuk Pemberdayaan Perempuan Desa Langlang Kabupaten Malang
Authors: Fitri Raisa , Zonna Lia Della Ayu , Filianti Filianti , Murniati Aniek
Published: October 2021

Ibu-Ibu di Desa Langlang Kecamatan Singosari Kabupaten Malang banyak yang berstatus sebagai seorang ibu rumah tangga. Mereka biasa mengisi waktu dengan bersosialisasi bersama masyarakat sekitar. Muncul keinginan dari mereka untuk melakukan kegiatan usaha sebagai salah satu cara mengisi waktu luang yang produktif dan menghasilkan materi. Guna mengakomodasi hal tersebut, tim pengabdian kepada masyarakat dari Fakultas Ekonomi Universitas Negeri Malang melaksanakan edukasi dan pelatihan kewirausahaan pembuatan jamu mengingat di Desa Langlang banyak tanaman empon-empon yang belum dimanfaatkan. Metode yang dilakukan adalah: 1) tahap persiapan; 2) tahap pelaksanaan program yang di isi dengan sosialisasi, diskusi, demonstrasi, dan pendmapingan; serta; 3) evaluasi program. Melalui kegiatan ini, ibu-ibu Desa Langlang mendapatkan pengetahuan dan keterampilan di bidang pembuatan jamu, mereka diajari cara memproduksi, mengemas hingga melakukan pemasaran secara offline maupun online. Diharapkan pengetahuan dan keterampilan yang didapatkan mampu terus diimplementasikan oleh ibu-ibu Desa Langlang sehingga terbentuk aktivitas pemberdayaan perempuan yang berkelanjutan guna mendukung pemerintah dalam menciptakan kemajuan ekonomi nasional.
Relationship between blurring factors and interfacial effects in chemically amplified resist processes in photomask fabrication
Authors: Kozawa Takahiro , Tamura Takao
Published: October 2021

Chemically amplified resists are an indispensable technology for photomask fabrication. The formation of latent images near interfaces in resist films is strongly affected by low-energy electron dynamics at the interfaces. On the other hand, the latent images are blurred by low-energy electron migration and acid diffusion in latent image formation. In this study, the relationship between blurring factors and interfacial effects was investigated by simulating the latent image formation on the basis of the sensitization and reaction mechanisms of chemically amplified electron beam resists. For low-energy electron dynamics, the interfacial effects on the protected unit distribution was reduced and the chemical gradient slightly increased with decreasing thermalization distance. For acid diffusion, the decrease in exposure pattern width significantly reduced the interfacial effects on the protected unit distribution in the depth direction because the acid diffusion length can be increased without sacrificing resolution.
Evaluation of heat dissipation characteristics of quantum cascade laser with diamond submount using structure function and three-dimensional thermal fluid simulation
Authors: Takagi Shigeyuki , Tanimura Hirotaka , Kakuno Tsutomu , Hashimoto Rei , Kaneko Kei , Saito Shinji
Published: October 2021

The heat dissipation of a quantum cascade laser (QCL) for a mounted structure with and without a diamond submount was evaluated by temperature and structure function measurements and three-dimensional simulation. From the structure function, it was shown that the thermal resistance between the QCL on the InP substrate and the CuW mount was reduced from 5.0 K W−1 without the submount to 2.5 K W−1 with the diamond submount. In the 3D simulation, it was confirmed that the heat flux transmitted horizontally through the diamond mount is larger than that without the submount. It is considered that the heat flux in the horizontal direction improved the heat dissipation from the InP substrate to the CuW mount. As a result, the output of the QCL with the submount was 1.15 times that of the QCL without the submount.
Velocity Obstacles and Emergent Rules-of-the-Air for Autonomous Drone Traffic Management
Authors: Bonnell William , Wilson R. Eddie
Published: October 2021

As the use of unmanned aerial vehicles (UAVs) becomes ever more widespread there is a growing need to develop traffic management and flight rules, in particular for autonomous UAVs or where the predicted traffic densities far exceed those of traditional manned aviation. Inspired by the current rules of the air and multi-agent systems (e.g., pedestrians and swarm robotics) we outline a set of flight rules for autonomous UAVs that consist of waypoint following and conflict avoidance schemes. These flight rules are then explored in small,pairwise simulations and thus refined to allow a UAV to choose from three potential avoidance behaviors based on it and its neighbors velocities and positions. Finally we compare the original and modified flight rules in larger scale simulations modelling two streams of UAV traffic crossing at a point. We show that the modified rules significantly reduce the mean transit time by reducing the impact of UAVs avoiding other UAVs from the same stream.
Transfer Learning Strategies for Anomaly Detection in IoT Vibration Data
Authors: Heistracher Clemens , Jalali Anahid , Strobl Indu , Suendermann Axel , Meixner Sebastian , Holly Stephanie , Schäll Daniel , Haslhofer Bernhard , Kemnitz Jana
Published: October 2021

Abstract—An increasing number of industrial assets are equipped with IoT sensor platforms and the industry now expects data-driven maintenance strategies with minimal deployment costs. However, gathering labeled training data for supervised tasks such as anomaly detection is costly and often difficult to implement in operational environments. Therefore, this work aims to design and implement a solution that reduces the required amount of data for training anomaly classification models on time series sensor data and thereby brings down the overall deployment effort of IoT anomaly detection sensors. We set up several in-lab experiments using three peristaltic pumps and investigated approaches for transferring trained anomaly detection models across assets of the same type. Our experiments achieved promising effectiveness and provide initial evidence that transfer learning could be a suitable strategy for using pretrained anomaly classification models across industrial assets of the same type with minimal prior labeling and training effort. This work could serve as a starting point for more general, pretrained sensor data embeddings, applicable to a wide range of assets.
Implementation of Total Physical Response (TPR) in English Learning for Attention Deficit Hyperactivity Disorder Students
Authors: Pramesti Kadek Nesya Febi
Published: October 2021

Abstract

 

English becomes an international language to help people who have different mother tongue to communicate each other. Learning English is very important because it also helps to increase the quality of human resource. Each individual has right to learn English without exception. Students with Attention Deficit Hyperactivity Disorder also can learn English. This study aimed is to describe the process implementation of Total Physical Response method in teaching English and the response from students with Attention Deficit Hyperactivity Disorder. This study uses descriptive qualitative as research design with observation and interview. The participants in this study are five students who have Attention Deficit Hyperactivity Disorder in one of special need schools in Bali.  The result of this study shows that implementing Total Physical Response method, students are easy to remember the new words in English and they also practice the word physically and verbally. Total Physical Response method makes students feeling comfortable and enjoy in teaching and learning process. They are also being motivated and active in the English class.

 

Keywords: Attention Deficit Hyperactivity Disorder, English language teaching, TPR method
Students’ Perception of Google Classroom Implementation as Online Learning Media
Authors: Paramahita Ketut Bayu Catur
Published: October 2021

The aim of this study was to discover high school students’ general perception about the implementation of Google Classroom as an online learning media, and the factors that influenced the development of the perception. This research used Mixed-method research design as described by Creswell (2014). Subject of this study was the student population of SMAS Lab Undiksha Singaraja. The instruments used for this research were Questionnaire and Interview Guide. The instruments were tested by using Gregory Formula Method and Cronbach-Alpha method. The data that have been obtained was analyzed using quantitative and qualitative method. The result of the research showed that the students of SMAS Lab Undiksha Singaraja held a positive view on the benefits of Google Classroom and its implementation as online learning media. Factors that have influenced this perception are Google Classroom’s ubiquity, students’ familiarity with Google Classroom, Google Classroom’s ease of use and stability in comparison to other similar applications.
A Case Study on Parents’ Perception of Their Primary School Children’s Online Learning Experience in Covid-19 Pandemic
Authors: Mahanjendra Pande Gede Baba , Agustini Dewa Ayu Eka , Wedhanti Ni Nyoman Karina , Sanjaya Pande Made Dharma
Published: October 2021

The study purposed to investigate parents’ perception and find out the challenges encountered by parents in accompanying their children during online learning in pandemic Covid-19. The participants involved two 2 parents of primary school students in Panji Village which chosen purposively. The study was a qualitative research that employed case study design. The data were collected through observation and interview. The instruments were observation sheet and interview guide. The data analysis involved data reduction, data display and drawing conclusion. The results find out that 1) the parents have a negative perception towards their children learning experiences in online learning during pandemic situation; and 2) there are 3 common challenges encountered by parents in accompanying their children during online learning such as time allocation, economic issue, and appropriate method for teaching their children. The results of the research give implication in enhancing the reference around parents’ role in online learning during Covid-19
La evaluación del desempeño, una nueva herramienta de la cultura de la transparencia aplicada al sector público en México
Authors: Rodríguez Montaño Luis Carlos , Ordaz Álvarez Arturo
Published: October 2021

En el presente trabajo se describe y analiza el contexto general de la función de la evaluación del desempeño. Primero, se analizan las ideas generales del concepto. Posteriormente, se revisa su origen en las organizaciones de orden privado, y más adelante se describe y analiza cómo ha sido a través del tiempo su incorporación en el sector público en México vista como una herramienta de medición innovadora en el logro de sus objetivos. Sin embargo, la evaluación del desempeño aplicada en el sector público puede ser vista desde dos perspectivas, para algunos puede ser un área de oportunidad en cuanto al mejoramiento de la función del gobierno, para otros puede percibirse como una especie de castigo el cual cada vez más va tomando cauces institucionales y se va insertando en el quehacer gubernamental como medida de eficiencia.
Hematoma Subdural Crónico Calcificado como complicación a largo plazo de la derivación ventrículo-peritoneal
Authors: Liang Wu Meilyn , Rangel José , Leslie Stanislav , Ordoñez Mitzadi
Published: October 2021

Introducción: El hematoma subdural crónico calcificado o “cerebro blindado” es un hallazgo raro dentro de la práctica neuroquirúrgica, constituyendo el 0.3% al 2.7% de los hematomas subdurales. Aún se desconoce el mecanismo fisiopatológico por el cual se desarrolla, sin embargo, se ha propuesto que una pobre circulación en el espacio subdural y trombosis predispone a su formación. Caso Clínico: Se reporta el caso de una femenina de 30 años con antecedente de hidrocefalia con derivación ventrículo-peritoneal derecha desde los 3 años que acude con historia de cefalea que no mejoraba con analgésicos, sin otra alteración neurológica. Se le realizó una tomografía cerebral simple que evidenció una colección extra axial bilateral hipodensa con calcificación perilesional sugestivo de hematoma subdural crónico calcificado. Se lleva a cabo craneotomía temporo-parietal izquierda y trepano derecho para exploración y evacuación de ambos hematomas sin complicaciones. Conclusión: La calcificación de un hematoma subdural crónico es una entidad rara, por lo que es necesario considerarse dentro de los diagnósticos diferenciales ante hallazgos sugestivos de calcificaciones intracraneales. Su manejo aún es controversial. El tratamiento quirúrgico puede constituir una buena elección en pacientes con sintomatología de efecto de masa. Sin embargo, es posible brindar un manejo conservador en asintomáticos, por lo que es necesario un manejo individualizado para cada paciente.
El empoderamiento de la mujer panameña y su relación con la violencia conyugal según la Encuesta Nacional de Salud Sexual y Reproductiva
Authors: Flores Castro Haydeé , De León Ruth G. , Chamorro Fermina , Mendoza Alba , Martínez García Ligia
Published: October 2021

Introducción. La Organización Mundial de la Salud reconoce que la violencia conyugal es una problemática que va más allá del ámbito familiar, afecta a todos los sectores de la sociedad convirtiéndose en un grave problema de salud pública y de derechos humanos.
Objetivo: examinar la relación entre elementos del empoderamiento femenino y tipos de violencia conyugal.
Métodos: con datos de la Encuesta Nacional de Salud Sexual y Reproductiva (2014-2015) se analizaron 3679 mujeres casadas/unidas. Se construyeron tres indicadores de empoderamiento como variable independiente, como variable dependiente se estudió la violencia física/sexual. Los datos fueron analizados con el programa SPSS utilizando descripciones de frecuencia, cruce de variables y pruebas de significancia estadística.
Resultados: Aquellas mujeres que más justifican la violencia conyugal, son las que más sufren agresiones físicas como empujones y/o sacudidas (15%), las que no justifican la violencia por ninguna razón, solo 4.1% sufren ataques de este tipo (p=0.000). El 3.1% de las mujeres con menor participación en el hogar son las que menos agresiones sufren en comparación con las que toman más decisiones y sufren más agresiones (8.1%) (p< 0.000). El grado de participación en aspectos importantes de Salud Sexual y Reproductiva (SSR), muestra que aquellas que no tenían ningún tipo de intervención, padecen mayores agresiones de tipo sexual (7.3%), estas agresiones disminuyen cuando la mujer toma mayores decisiones en SSR (0.4%) (p=0.000).
Conclusiones: Hay una asociación positiva entre una menor vivencia de violencia física/sexual con mayores niveles de autonomía en temas de SSR y Rechazo a la Violencia Conyugal.
A Wide-field CO Survey toward the California Molecular Filament
Authors: Guo Weihua , Chen Xuepeng , Feng Jiancheng , Sun Li , Wang Chen , Su Yang , Sun Yan , Ao Yiping , Zhang Shaobo , Zhou Xin , Yuan Lixia , Yang Ji
Published: October 2021

We present the survey of 12CO/13CO/C18O (J = 1 − 0) toward the California molecular cloud (CMC) within the region of 161.°75 ≤ l ≤ 167.°75, −9.°5 ≤ b ≤ −7.°5 using the Purple Mountain Observatory (PMO) 13.7 m millimeter telescope. Adopting a distance of 470 pc, the mass of the observed molecular cloud estimated from 12CO, 13CO, and C18O is about 2.59 × 104, 0.85 × 104, and 0.09 × 104
M
⊙, respectively. A large-scale continuous filament extending about 72 pc is revealed from the 13CO images. A systematic velocity gradient perpendicular to the major axis appears and is measured to be ∼0.82 km s−1 pc−1. The kinematics along the filament shows an oscillation pattern with a fragmentation wavelength of ∼2.3 pc and velocity amplitude of ∼0.92 km s−1, which may be related to core-forming flows. Furthermore, assuming an inclination angle to the plane of the sky of 45°, the estimated average accretion rate is ∼101 M
⊙ Myr−1 for the cluster LkHα 101 and ∼21 M
⊙ Myr−1 for the other regions. In the C18O observations, the large-scale filament could be resolved into multiple substructures, and their dynamics are consistent with the scenario of filament formation from converging flows. Approximately 225 C18O cores are extracted, of which 181 are starless cores. Roughly 37% (67/181) of the starless cores have α
vir less than 1. Twenty outflow candidates are identified along the filament. Our results indicate active early-phase star formation along the large-scale filament in the CMC region.
On the Origin of Late-time X-Ray Flares in UV/optically Selected Tidal Disruption Events
Authors: Hayasaki Kimitake , Jonker Peter G.
Published: October 2021

We propose a model to explain the time delay between the peak of the optical and X-ray luminosity, Δt
O−X hereafter, in UV/optically selected tidal disruption events (TDEs). The following picture explains the observed Δt
O−X in several TDEs as a consequence of the circularization and disk accretion processes as long as the sub-Eddington accretion. At the beginning of the circularization, the fallback debris is thermalized by the self-crossing shock caused by relativistic precession, providing the peak optical emission. During the circularization process, the mass fallback rate decreases with time to form a ring around the supermassive black hole (SMBH). The formation timescale corresponds to the circularization timescale of the most tightly bound debris, which is less than a year to several decades, depending mostly on the penetration factor, the circularization efficiency, and the black hole mass. The ring will subsequently evolve viscously over the viscous diffusion time. We find that it accretes onto the SMBH on a fraction of the viscous timescale, which is 2 years for the typical given parameters, leading to X-ray emission at late times. The resultant Δt
O−X is given by the sum of the circularization timescale and the accretion timescale and significantly decreases with increasing penetration factor to several to ∼10 yr typically. Since the X-ray luminosity substantially decreases as the viewing angle between the normal to the disk plane and line of sight increases from 0° to 90°, a low late-time X-ray luminosity can be explained by an edge-on view. We also discuss the super-Eddington accretion scenario, where Δt
O−X is dominated by the circularization timescale.
Blazar OJ 287 after First VHE Activity: Tracking the Reemergence of the HBL-like Component in 2020
Authors: Kushwaha Pankaj , Pal Main , Kalita Nibedita , Kumari Neeraj , Naik Sachindra , Gupta Alok C , de Gouveia Dal Pino E. M. , Gu Minfeng
Published: October 2021

We report the reemergence of a new broadband emission through a detailed and systematic study of the multiwavelength spectral and temporal behavior of OJ 287 after its first-ever reported very high energy activity in 2017 to date, which includes the second-highest X-ray flux of the source. The source shows high optical to X-ray flux variations, accompanied mainly by strong spectral changes. The optical to X-ray flux variations are correlated and simultaneous except for two durations when they are anticorrelated. The flux variations, however, are anticorrelated with the X-ray spectral state while correlated with optical–UV (ultraviolet). Weekly binned Fermi-LAT data around the duration of the highest X-ray activity show a few detections with a log-parabola model but none with a power law, yet the extracted LAT spectral energy distribution of the high-activity duration for both the models is similar and shows a hardening above 1 GeV. Further, near-infrared data indicate strong spectral change, resembling a thermal component. Overall, the combined optical to gamma-ray broadband spectrum establishes the observed variations to a new high-energy-peaked broadband emission component, similar to the one seen during the highest reported X-ray flux state of the source in 2017. The observed activities indicate some peculiar features that seem to be characteristic of this emission component, while its appearance a few years around the claimed ∼12 yr optical outbursts strongly indicates a connection between the two.
Updated Transfer Coefficients for Magnetized Plasmas
Authors: Marszewski Andrew , Prather Ben S. , Joshi Abhishek V. , Pandya Alex , Gammie Charles F.
Published: October 2021

Accurate radiative transfer coefficients (emissivities, absorptivities, and rotativities) are needed for modeling radiation from relativistically hot, magnetized plasmas such as those found in Event Horizon Telescope sources. Here we review, update, and correct earlier work on radiative transfer coefficients. We also describe an improved method for numerically evaluating rotativities and provide convenient fitting formulae for the relativistic κ distribution of electron energies.
Prompt Emission of High-energy Nonthermal Photons from a Radiation-dominated Relativistic Magnetic Reconnection
Authors: Xie Y. , Zhao Z. H. , Lei Z. , Yao W. P. , Zhou C. T. , Zhu S. P. , He X. T. , Qiao B.
Published: October 2021

In astrophysics, relativistic magnetic reconnection, where particles can accelerate in a region of a strong electric field and weak magnetic field, is a key physical process for the explanation of high-energy photon synchrotron emission above 160 MeV, the limit given by the balance between the accelerating electric force and the radiation reaction force. However, the reconnection dynamics—more importantly, the particle acceleration and photon emission dynamics—in this radiation-dominated, relativistic regime have not been self-consistently investigated yet. In this paper, through theoretical derivation of the modified relativistic tearing instability (RTI) and kinetic particle-in-cell simulations, we find that, because of the radiation reaction, the compression of the reconnecting current sheet is significantly enhanced, leading to an increase in the RTI growth rate in the short-wavelength range. As a result, during reconnection, the current sheet is fragmented into a chain of many more magnetic null points separated by much smaller plasmoids, which eventually gives rise to significant improvement of particle acceleration efficiency and shortening of photon emission duration. In the simulations, prompt emission at duration ω
peΔT ≃ 233 (reduced by a factor of 3) of high-energy nonthermal photons with a hard power law of index 2.11 for photon energies <100 MeV and index 1.39 for those >100 MeV is observed. These characteristics are consistent with the observed emission properties of short gamma-ray bursts, particularly of GRB 090510, supporting the radiation-dominated reconnection scenario.
“A World Upside Down”: Experiences of Informal Caregivers During the COVID-19 Pandemic
Authors: McLennon Susan M. , Lekhak Nirmala
Published: October 2021

The caregiving process may result in negative outcomes for caregivers. The coronavirus disease 2019 pandemic has contributed additional challenges for family caregivers of older adults with chronic illnesses. Little is known about the additional impact of the pandemic on caregivers. The purpose of the current study was to understand the effects of the pandemic on the caregiving experience. A qualitative descriptive content analysis was conducted on nine blogs of caregivers of older adults. Blogs were identified using purposive sampling. Bloggers were American, middle-aged, and caring for an older adult with dementia. Caregivers reported “a world upside down” and change that contributed to uncertainty; the need for support; and how isolation, depressive symptoms, and threat contributed to negative psychological well-being. Managing and struggling in response to caregiving challenges and wishing for resolution were also reported. Blogs of caregivers of older adults with chronic illness yielded important information that may be useful to clinicians. [
Journal of Gerontological Nursing, 47
(11), 11–14.]
Provably Secure Authentication Approach for Data Security in Cloud Using Hashing, Encryption, and Chebyshev-Based Authentication
Authors: Ahamad Danish , Akhtar Md Mobin , Hameed Shabi Alam , Al Qerom Mahmoud Mohammad Mahmoud
Published: October 2021

Secure and efficient authentication mechanism becomes a major concern in cloud computing due to the data sharing among cloud server and user through internet. This paper proposed an efficient Hashing, Encryption and Chebyshev HEC-based authentication in order to provide security among data communication. With the formal and the informal security analysis, it has been demonstrated that the proposed HEC-based authentication approach provides data security more efficiently in cloud. The proposed approach amplifies the security issues and ensures the privacy and data security to the cloud user. Moreover, the proposed HEC-based authentication approach makes the system more robust and secured and has been verified with multiple scenarios. However, the proposed authentication approach requires less computational time and memory than the existing authentication techniques. The performance revealed by the proposed HEC-based authentication approach is measured in terms of computation time and memory as 26ms, and 1878bytes for 100Kb data size, respectively.
Efficient DNA Cryptographic Framework for Secured Data Encryption Based on Chaotic Sequences
Authors: Akiwate Bahubali , Parthiban Latha
Published: October 2021

Data is big, data is diverse, data comes in zillion formats, it is important to ensure the safety and security of the shared data. With existing systems limited and evolving, the objective of the current research work is to develop a robust Image Encryption technique that is adept and effective at handling heterogeneous data and can withstand state-of-the-art hacking efforts such as brute force attacks, cropping attacks, mathematical attacks, and differential attacks. The proposed Efficient DNA Cryptographic System (EDCS) model presents a pseudorandom substitution method using logistic sine cosine chaotic maps, wherein there is very little correlation between adjacent pixels, and it can decode the image with or without noise, thereby making the proposed system noise-agnostic. The proposed EDCS-based Image model using Chaotic Maps showed enhancements in parameters such as Unified Average Changing Intensity (UACI), Number of Pixels Change Rate (NPCR), Histogram, and Entropy when compared with existing image security methods.
What Drives Information Disclosure in Social Networking Sites
Authors: Arslan Faruk , Bagchi Kallol K. , Udo Godwin
Published: October 2021

The launch of the General Data Protection Regulation in the European Union, rapid diffusion of social networking sites (SNS) across the globe, and continuing discussion of approaches such as Open Personal Data Stores to address the privacy concerns of individuals necessitate a broader and more in-depth understanding of information disclosure phenomenon using large-N comparisons. This study uses a research model based on a multi-theory framework and PLS-SEM method to test a series of postulations regarding the antecedents of information disclosure among SNS users within the context of the European Union and its cultural heritage regions. Specifically, this study seeks to understand how institutional trust, privacy calculus, perceived control, and users' information privacy concerns affect information disclosure. The study results reveal both converging and diverging patterns across the E.U.'s six cultural heritage regions. Given its rich multi-country sample and generalizable conclusions, this study addresses a gap in the information privacy literature.
A Meta-Analysis of Privacy
Authors: Balakrishnan Unny R.  , Bhatt Nityesh
Published: October 2021

Facial recognition systems use advanced computing to capture facial information and compare the same with proprietary databases for validation. The emergence of data capturing intermediaries and open access image repositories have compounded the need for a holistic perspective for handling the privacy and security challenges associated with FRS. The study presents the results of a bibliometric analysis conducted on the topic of privacy, ethical and security aspects of FRS. This study presents the level of academic discussion on the topic using bibliometric performance analysis. The results of the bibliographic coupling analysis to identify the research hotspots are also presented. The results also include the systematic literature review of 148 publications that are distributed across seven themes. Both the bibliometric and systematic analysis showed that privacy and security in FRS requires a holistic perspective that cuts across privacy, ethical, security, legal, policy and technological aspects.