bluuebunny/crossref_metadata_2025 huggingface dataset:
Manajemen Risiko Operasional Pada Perbankan Syariah Di Indonesia
Authors: Nurapiah Dewi
Published: July 2020

Manajemen risiko operasional merupakan risiko kerugian yang diakibatkan oleh proses internal yang kurang memadai, kegagalan proses internal, kesalahan manusia, kegagalan sistem, dan/atau adanya kejadian kejadian eksternal yang memengaruhi operasional bank. Manajemen Risiko Operasional untuk meminimalkan kemungkinan dampak negatif dari tidak berfungsinya proses internal, kesalahan manusia, kegagalan sistem, dan/atau kejadian-kejadian eksternal. Untuk mencapai tujuan operasinya, bank syariah harus mempertimbangkan risiko operasional yang bisa mempengaruhi kinerja operasinya, termasuk risiko kerugian yang terjadi dari ketidakcukupan atau proses internal yang gagal, SDI, dan sistem dari kejadian eksternal.
Manajemen Risiko Reputasi pada Perbankan Syariah Di Indonesia
Authors: Fauziah Salma
Published: July 2020

Masa depan Perbankan sangat ditentukan oleh kemapuan manajemen perbankan islam dan menghadapi berbagai perubahan pesat yang terjadi saat ini. Pesatnya informasi dan teknologi serta inovasi keuangan membuat sektor keuangan tempat perbankan islam bernaung semakin menjadi kompleks, dinamis dan kompetitif. Kondisi ini berpotensi meningkatnya risiko terhadap perbankan islam dimana semua risiko ini mutlak harus di kelola. Bank islam harus lebih memulai mengelola risiko tersebut seperti risiko reputasi contohnya. Risiko reputasi itu risiko akibat menurunnya kepercayaan stakeholder yang bersumber dari persepsi negatif terhadap bank dampak kejadian risiko reputasi pada umumnya menyebabkan kerugian non finansial bagi bank. Risiko reputasi terjadi akibat kejadian-kejadian yang merugikan reputasi bank syariah misalnya pemberitaan negatif di media massa, pelanggaran etika, dan keluhan nasabah yang bias menyebabkan risiko reputasi.
Profitability Analysis PT. BRI Syariah Bank Period 2009-2018 (Judging From The Effect Of Financing To Deposit Ratio And Non Performing Financing Against Return On Assets)
Authors: SEHAQ SYAFIRAH
Published: July 2020

The world Bank states that the global economy slow down to 2,9% in 2018. Bank profitability growth in Indonesia slowed as identified through Return On Asset printed by ten large banks until Q3 2018. The aims of this research are to analyze the influence financing to deposit ratio and non performing finance into return on asset. The independent variables in this research are financing to deposit ratio and non performing finance, and the dependent variable is return on asset. The approach of this research was a descriptive quantitative. The data used are secondary data, obtained from published financial statements of  BRI Syariah Bank between 2009 – 2018. The technique to analyze the data is multiple linier regression. Based on the result of the analysis showed that financing to deposit ratio variabel has negative influence into return on asset. Based on the result of the analysis showed that non performing finance variable has negative influence into return on asset.
PELAYANAN JASA SOPIR GOJEK ONLINE KEPADA KONSUMEN DI GOJEK ONLINE CABANG PURWAKARTA DALAM PERSPEKTIF EKONOMI SYARIAH
Authors: Karistawati Shanti , Nurhayati Rina , Rohmat Siti
Published: July 2020

Abstrak Artikel ini membahas tentang alat transportasi saat ini bukan hanya sekedar untuk alat perpindahan atau mobilitas saja, namun untuk efisiensi waktu dan meminimalisir kemacetan. Memberikan pelayanan terbaik untuk konsumen menjadi tolak ukur keberhasilan sebuah perusahaan transportasi. Perusahaan yang berhasil memasarkan produk/jasanya kepada konsumen dengan pelayanan yang memuaskan mendapatkan brand yang baik dimata konsumen. Penelitian ini dilakukan bertujuan untuk mengetahui kualitas pelayanan yang para sopir Gojek dan untuk mengetahui kualitas pelayanan sopir dalam pandangan Perspektif Islam. Metode penelitian yang digunakan adalah metode pendekatan penelitian lapangan (field research) Sehingga penelitian ini juga bisa disebut penelitian kasus atau study kasus (case study) dengan pendekatan deskriptif kualitatif. Dari hasil penelitian tersebut dapat disimpulkan bahwa Gojek terdapat standar operasional prosedur dalam melayani konsumen baik itu terkait dengan penampilan sopir masih belum sesuai. Jika ditinjau dari cara bisnis menurut sifat Rosullulah yaitu terkait dengan sifat Shiddiq, Amanah, Thabligh, Fathanah masih belum sepenuhnya sesuai.

Kata kunci : Gojek, Sopir, Pelayanan, Jasa, Konsumen

 

This article discusses the current means of transportation not just for moving equipment or mobility, but for time efficiency and to minimize congestion. Providing the best service for consumers is a measure of the success of a transportation company. Companies that successfully market their products / services to consumers with satisfying service get a good brand in the eyes of consumers. This study was conducted aiming to determine the quality of service offered by Gojek drivers and to determine the quality of driver services in the view of the Islamic Perspective. The research method used is the field research approach so that this research can also be called a case study or case study with a qualitative descriptive approach. From the results of these studies it can be concluded that Gojek has standard operational procedures in serving consumers both related to the appearance of the driver is still not appropriate. When viewed from the way of business according to the nature of Rosullulah which is related to the nature of Shiddiq, Amanah, Thabligh, Fathanah is still not entirely appropriate.

Keywords : Gojek, Driver, Services, Services, Consumers
Diagnóstico del pensamiento métrico con estudiantes de grado séptimo
Authors: Tuta Mora Angela Rocío , Leguizamón Romero José Francisco , Chaparro Cardozo Arley Zamir
Published: July 2020

Se presentan los resultados de la fase diagnóstica de una investigación más amplia, que tuvo como objetivo fortalecer el pensamiento métrico en estudiantes de grado séptimo a través de situaciones del contexto extraescolar, ya que se pudo evidenciar que los estudiantes solo realizan procesos de conversión, descuidando la construcción de la magnitud objeto de la medición y su comprensión; es por esto que, se realizó un análisis mixto para poder comprender lo que el estudiante entiende por medición y conocer las dificultades sobre los conceptos asociados al pensamiento métrico. Uno de los resultados que arroja la prueba diagnóstica, es que a los estudiantes les falta profundizar más en cuanto al proceso de la elaboración, comparación y ejercitación de procedimientos, que va ligado con la comunicación, pero también se debe lograr una mejor claridad acerca del objeto matemático sobre el que actúa el estudiante y la delimitación de la acción que sobre dicho objeto va a ejecutar según el propósito o fin a lograr.
El problema de la tangente, una nueva visión a un antiguo problema
Authors: Angarita Cervantes Rafael Mauricio
Published: July 2020

Este artículo es el resultado de las reflexiones que, como docente de bachillerato, han surgido al notar la dificultad manifiesta de los estudiantes con respecto a la asignatura de cálculo. Se consolida una propuesta centrada en el análisis y determinación de la solución al problema de la ecuación de la recta tangente a funciones polinómicas; solución que se extiende f(x)= axn  , con n ε Q n ε Q y a ε R a ε R , por medio de la llamada derivada de Caratheodory; se concluye con una aproximación alternativa que puede también ser objeto de estudio, incluso a nivel elemental.
Review: Who’s In and Who’s Out of Fashion (Studies)?
Authors: Marcus Jaclyn
Published: July 2020

Despite its relatively recent growth, the field of fashion studies is already known for its many transformations. This year’s College Art Association of America (CAA) Annual Conference featured an exciting new panel on the interdisciplinary nature of dress, entitled Who’s In and Who’s Out of Fashion (Studies)? Chaired by Sarah Scaturro, chief conservator at the Cleveland Museum of Art, and Ann Tartsinis, doctoral student at Stanford University’s Department of Art & Art History, the session addressed the question “Is there a correct or wrong way to do fashion studies?” and aimed to explore what is traditionally defined as “fashion studies” within the discipline. This panel review includes an introduction to the development of the field of fashion and dress, an overview of the topics and case studies presented during the session, and a question and answer session with the Co-Chairs of the panel.
Győrkös István mint a rendvédelem folyamatos célszemélye
Authors: Boross Zsigmond Attila
Published: July 2020

The author provides an overview of how István Győrkös, a recently apprehended militant neo-Nazi and his followers have been inspected by law enforcement agencies for a quarter century.
Ékszerlopás a pécsi székesegyházból
Authors: Kátai Rafael
Published: July 2020

The author provides an overview of the investigation concerning the theft of 18–19th century jewelry from the Cathedral of Pécs, Hungary.
Discovery of the Optical Afterglow and Host Galaxy of Short GRB 181123B at z = 1.754: Implications for Delay Time Distributions
Authors: Paterson K. , Fong W. , Nugent A. , Escorial A. Rouco , Leja J. , Laskar T. , Chornock R. , Miller A. A. , Scharwächter J. , Cenko S. B. , Perley D. , Tanvir N. R. , Levan A. , Cucchiara A. , Cobb B. E. , De K. , Berger E. , Terreran G. , Alexander K. D. , Nicholl M. , Blanchard P. K. , Cornish D.
Published: July 2020

We present the discovery of the optical afterglow and host galaxy of the Swift short-duration gamma-ray burst (SGRB) GRB 181123B. Observations with Gemini-North starting ≈9.1 hr after the burst reveal a faint optical afterglow with i ≈ 25.1 mag at an angular offset of 0.″59 ± 0.″16 from its host galaxy. Using grizYJHK observations, we measure a photometric redshift of the host galaxy of

. From a combination of Gemini and Keck spectroscopy of the host galaxy spanning 4500–18000 Å, we detect a single emission line at 13390 Å, inferred as Hβ at z = 1.754 ± 0.001 and corroborating the photometric redshift. The host galaxy properties of GRB 181123B are typical of those of other SGRB hosts, with an inferred stellar mass of ≈9.1 × 109
M
⊙, a mass-weighted age of ≈0.9 Gyr, and an optical luminosity of ≈0.9L*. At z = 1.754, GRB 181123B is the most distant secure SGRB with an optical afterglow detection and one of only three at z > 1.5. Motivated by a growing number of high-z SGRBs, we explore the effects of a missing z > 1.5 SGRB population among the current Swift sample on delay time distribution (DTD) models. We find that lognormal models with mean delay times of ≈4–6 Gyr are consistent with the observed distribution but can be ruled out to 95% confidence, with an additional ≈one to five Swift SGRBs recovered at z > 1.5. In contrast, power-law models with ∝t
−1 are consistent with the redshift distribution and can accommodate up to ≈30 SGRBs at these redshifts. Under this model, we predict that ≈1/3 of the current Swift population of SGRBs is at z > 1. The future discovery or recovery of existing high-z SGRBs will provide significant discriminating power on their DTDs and thus their formation channels.
Hidden in our pockets: building of a DNA barcode library unveils the first record of Myotis alcathoe for Portugal
Authors: Rebelo Hugo , Ferreira Sónia , Amorim Francisco , Horta Pedro , Raposeira Helena , Santos Helena , Beja Pedro , Mata Vanessa
Published: July 2020

The advent and boom of DNA barcoding technologies have provided a powerful tool for the fields of ecology and systematics. Here, we present the InBIO Barcoding Initiative Database: Portuguese Bats (Chiroptera) dataset containing DNA sequences of 63 specimens representing the 25 bat species currently known for continental Portugal. For that, we sequenced tissues samples obtained in a vast array of projects spanning the last two decades.

We added four new Barcoding Index Numbers (BINs) to existing Chiroptera barcodes on BOLD, two belonging to Myotis escalerai, one to Plecotus auritus and the other to Rhinolophus hipposideros. Surprisingly, one of the samples initially identified in the field as Myotis mystacinus turned out to be Myotis alcathoe, which represents the first record of this species for Portugal. The presence of Nyctalus noctula in Portugal was also genetically confirmed for the first time. This case study shows the power and value of DNA barcoding initiatives to unravel new data that may be hidden on biological collections.
A workflow for standardising and integrating alien species distribution data
Authors: Seebens Hanno , Clarke David A. , Groom Quentin , Wilson John R. U. , García-Berthou Emili , Kühn Ingolf , Roigé Mariona , Pagad Shyama , Essl Franz , Vicente Joana , Winter Marten , McGeoch Melodie
Published: July 2020

Biodiversity data are being collected at unprecedented rates. Such data often have significant value for purposes beyond the initial reason for which they were collected, particularly when they are combined and collated with other data sources. In the field of invasion ecology, however, integrating data represents a major challenge due to the notorious lack of standardisation of terminologies and categorisations, and the application of deviating concepts of biological invasions. Here, we introduce the SInAS workflow, short for Standardising and Integrating Alien Species data. The SInAS workflow standardises terminologies following Darwin Core, location names using a proposed translation table, taxon names based on the GBIF backbone taxonomy, and dates of first records based on a set of predefined rules. The output of the SInAS workflow provides various entry points that can be used both to improve coherence among the databases and to check and correct the original data. The workflow is flexible and can be easily adapted and extended to the needs of different users. We illustrate the workflow using a case-study integrating five widely used global databases of information on biological invasions. The comparison of the standardised databases revealed a surprisingly low degree of overlap, which indicates that the amount of data may currently not be fully exploited in the original databases. We highly recommend the use and development of publicly available workflows to ensure that the integration of databases is reproducible and transparent. Workflows, such as SInAS, ultimately increase trust in data, study results, and conclusions.
PtdIns(4,5)P2 and PtdIns(3,4,5)P3 dynamics during focal adhesions assembly and disassembly in a cancer cell line
Authors: ALFAHAD Dhurgham , ALHARETHI Salem , ALHARBI Bandar , MAWLOOD Khatab , DASH Philip
Published: July 2020

Focal adhesions (FAs) are large assemblies of proteins that mediate intracellular signals between the cytoskeleton and the extracellular matrix (ECM). The turnover of FA proteins plays a critical regulatory role in cancer cell migration. Plasma membrane lipids locally generated or broken down by different inositide kinases and phosphatase enzymes to activate and recruit proteins to specific regions in the plasma membrane. Presently, little attention has been given to the use of phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2) and Phosphatidylinositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3) fluorescent biosensors in order to determine the spatiotemporal organisation of PtdIns(4,5)P2 and PtdIns(3,4,5)P3 within and around or during assembly and disassembly of FAs. In this study, specific biosensors were used to detect PtdIns(4,5)P2, PtdIns(3,4,5)P3, and FAs proteins conjugated to RFP/GFP in order to monitor changes of PtdIns(4,5)P2 and PtdIns(3,4,5)P3 levels within FAs. We demonstrated that the localisation of PtdIns(4,5)P2 and PtdIns(3,4,5)P3 were moderately correlated with that of FA proteins. Furthermore, we demonstrate that local levels of PtdIns(4,5)P2 increased within FA assembly and declined within FA disassembly. However, PtdIns(3,4,5)P3 levels remained constant within FAs assembly and disassembly. In conclusion, this study shows that PtdIns(4,5)P2 and PtdIns(3,4,5)P3 localised in FAs may be regulated differently during FA assembly and disassembly.
A combination of three probiotic strains for treatment of acute diarrhoea in hospitalised children: an open label, randomised controlled trial
Authors: Chen K. , Xin J. , Zhang G. , Xie H. , Luo L. , Yuan S. , Bu Y. , Yang X. , Ge Y. , Liu C.
Published: July 2020

Acute diarrhoea continues to be a leading cause of morbidity, hospitalisation, and mortality worldwide, and probiotics have been proposed as a complementary therapy in the treatment of acute diarrhoea. The goal of this study is to assess the efficacy and safety of three combined probiotic strains, Bifidobacterium lactis Bi-07, Lactobacillus rhamnosus HN001, and Lactobacillus acidophilus NCFM, as an adjunct to rehydration therapy in treatment of acute watery diarrhoea in hospitalised children. Eligible diarrheal children were randomised into intervention group (IG, n=96, conventional treatment for diarrhoea in combination with probiotics) and control group (CG, n=98, conventional treatment for diarrhoea without probiotics). The primary assessments of this study were duration of diarrhoea and hospital stay and improvement in diarrhoea symptoms. Significantly more children in the IG showed improvements in diarrhoea (defined as a decrease of stool frequency to no more than four times per day and an improved stool consistency within 24-48 h after the treatment) than those in the CG (96.9 vs 79.6%, P<0.05). Children supplemented with the mixed strains had a 22.5 h shorter (121.4±13.7 h vs 143.9±19.8 h) mean duration of diarrhoea and 1.2 d shorter hospital stays (5.1±1.2 d vs 6.3±1.4 d) than children only receiving the rehydration therapy (P<0.05). The prevalence of constipation of children in the IG (3.1%) was markedly lower (P<0.05) than that of children in the CG (13.3%) after treatment. In conclusion, the mixture of three probiotic strains given to children aged 1-3 years resulted in shorter durations of diarrhoea and hospitalisation and a higher percentage of improved children.
Nursing Professional Development Practice During a Pandemic
Authors: Harper Mary G. , Dougherty Dennis , Price M. Greta
Published: July 2020

From staffing and supply shortages to furloughs and layoffs, few expected—let alone had a plan for managing—the COVID-19 pandemic. The crisis allowed nursing professional development to demonstrate its value like never before. This article explores the impact of the pandemic on nursing professional development practice at the micro (unit), meso (organization), and macro (national) levels of our specialty.

[
J Contin Educ Nurs
. 2020;51(8):349–351.]
Análisis del proceso de degradación y comportamiento electroquímico de la aleación de magnesio AZ31 en saliva artificial
Authors: Mena-Morcillo Emmanuel , Veleva Lucien , Espadas-Herrera Luis J.
Published: July 2020

En el presente trabajo se ha aplicado una combinación de pruebas de inmersión, técni­cas de análisis de superficie y métodos electroquímicos para caracterizar el proceso de degradación de la aleación de magnesio AZ31 cuando ha sido expuesta a saliva artificial durante 28 días. La superficie de la aleación fue evaluada en dos condiciones: simple y con una capa de MgF2. Esta capa de conversión se formó sumergiendo el AZ31 en ácido fluorhídrico (HF). Las imágenes SEM revelaron diferencias en el ataque de corrosión de las dos condiciones de la superficie, específicamente en la vecindad de las partículas inter-metálicas de Al-Mn. Tanto el análisis EDS como XPS indicaron que la composición de las capas de corrosión formadas durante las pruebas de inmersión corresponde principalmente a Mg(OH)2 y Ca10(PO4)6(OH)2 para la muestra simple, mientras que para la superficie tratada el producto de corrosión principal fue MgCO3. El valor de resistencia a la polarización (Rp) estimado a partir de los experimentos EIS fue dos órdenes de magnitud mayor para las muestras tratadas con HF que para las muestras simples. Además, la velocidad de corrosión (CR) calculada a partir de las curvas de polarización potenciodinámica (PDP) fue menor para la superficie tratada con HF que para la superficie simple de AZ31. Todos los resultados han indicado que el tratamiento con HF en la superficie de aleación de magnesio AZ31 mejora significativamente su resistencia a la corrosión en saliva artificial.
The Impact of Information and Communication Systems on Organizations
Authors: Yildiz Orkun , Ersoy Abdullah Süreyya , Yıldırım İbrahim Soner
Published: July 2020

The chapter aims to provide a systematic overview of Information and Communication Systems (ICTs), their functions and the effect of ICTs on organizations by clarifying the relationships among the organization structures. As a response to the need for understanding the effects of ICTs on organizational structures and business processes, the present study, which is conceptual in nature, opts for a systematic literature review. The study reviews a broad range of scientific studies that focus on the relationship between ICTs and the effects of organizational facts. Therefore, it presents novel and useful information about the effects of ICTs on general management, organizational hierarchy, and strategic business process that can be used by business information technology investors, developers, and users. It is also hoped that the present study provides research implications for researchers who aim to conduct empirical studies to investigate the impact of ICTs on business systems.
Student Satisfaction From E-Learning Systems
Authors: Jabeen Sadia , Din Aisha Muhammd , Sadiq Muhammad Farhan
Published: July 2020

This chapter explores the satisfaction level of students from Virtual University of Pakistan mode of e-learning. The research aimed at explaining the various factors of adopting the e-learning mode as well as inquiring about the determinant of satisfaction from virtual educational systems. The quantitative study was conducted through survey method; 240 respondents were selected from all the Virtual University campuses through simple random sampling. Questionnaires based on 25 items were constructed to measure the satisfaction. One sample t-test and regression analysis were applied for data analysis. Results revealed that a majority of the students prefer this institute due to high teaching standards. Interactivity pattern was explained as the main predictor of students' satisfaction from the system. Findings of the study lead to the practical implications and identify the need of face-to-face communication and betterment in interactivity patterns between instructors and students to enhance students' satisfaction from the system.
Paradigms of Public Relations in an Age of Digitalization
Authors: Al-Jenaibi Badreya
Published: July 2020

This study explores the uses of social media in public relations (PR) departments in the United Arab Emirates (UAE). It seeks to lay the basis for understanding the place of social media in the UAE and to contribute to the analysis of the issue of social change in the PR offices. The chapter assesses the state of PR in the UAE in relation to global media and highlights needs in this area for both public and private enterprises. Presenting interview data taken from a cross section of 40 organizations throughout the UAE, it addresses perceptions of benefits, challenges, public acceptance, and future strategies of social media in relation to global SM as whole. It finds that barriers to the use and acceptance of SM in PR have mostly been lifted.
A Study of Big Data Processing for Sentiments Analysis
Authors: Chander Dinesh , Singh Hari , Gupta Abhinav Kirti
Published: July 2020

Data processing has become an important field in today's big data-dominated world. The data has been generating at a tremendous pace from different sources. There has been a change in the nature of data from batch-data to streaming-data, and consequently, data processing methodologies have also changed. Traditional SQL is no longer capable of dealing with this big data. This chapter describes the nature of data and various tools, techniques, and technologies to handle this big data. The chapter also describes the need of shifting big data on to cloud and the challenges in big data processing in the cloud, the migration from data processing to data analytics, tools used in data analytics, and the issues and challenges in data processing and analytics. Then the chapter touches an important application area of streaming data, sentiment analysis, and tries to explore it through some test case demonstrations and results.
Trust and Reliability Management in Large-Scale Cloud Computing Environments
Authors: Gupta Punit
Published: July 2020

Trust is a firm belief over a person or a thing in distributed environment based on its feedback on review based on its performance by others. Similarly, in cloud, trust models play an important role in solving various open challenges in cloud environment. This chapter showcases all such issues that can be solved by trust management techniques. This work discourses various trust management models and its categorization. The work discourses existing work using trust models from the field of grid computing, cloud computing, and web services because all these domains are sub child of each other. The work provides an abstract view over all trust models and find the suitable one for cloud and its future prospects.
Building Better India
Authors: Chowdhury Swarup Roy , Saha Suman
Published: July 2020

We can name many industries that are still based on the same working practices and business models that they have had for a long time – maybe since they started. Despite the wealth of modern technology now available, public infrastructure, a critical component for the well-being of the society, is still an industry based on the paperwork, letters, emails, manual approvals, and a large amount of guess work. It involves a lot of manual effort and is also error prone. It is really very hard for the stakeholders and end users to get an update on the progress of the project, which impacts them directly or indirectly. The authors intend to develop a groundbreaking blockchain platform that can meet the needs of all the different stakeholders involved in creating and providing a better infrastructure. They plan to automate the entire process by using smart contracts to minimize paperwork for the government officials. This will not only eliminate the errors that can happen during manual execution but will also provide a real-time update to all the stakeholders in making the process more transparent.
Neuro-Fuzzy-Based Smart Irrigation System and Multimodal Image Analysis in Static-Clustered Wireless Sensor Network for Marigold Crops
Authors: K. M. Karthick Raghunath , G. R. Anantha Raman
Published: July 2020

As a decorative flower, marigolds have become one of the most attractive flowers, especially on the social and religious arena. Thus, this chapter reveals the potential positive resultants in the production of marigold through neuro-fuzzy-based smart irrigation technique in the static-clustered wireless sensor network. The entire system is sectionalized into clustering phase and operational phase. The clustering phase comprises three modules whereas the operational phase also includes three primary modules. The neuro-fuzzy term refers to a system that characterizes the structure of a fuzzy controller where the fuzzy sets and rules are adjusted using neural networks iteratively tuning techniques with input and output system data. The neuro-fuzzy system includes two distinct way of behavior. The vital concern of the system is to prevent unnecessary or unwarranted irrigation. Finally, on the utilization of multimodal image analysis and neuro-fuzzy methods, it is observed that the system reduces the overall utilization of water (~32-34%).
Infrastructure Sharing for Cellular Networks in Tanzania
Authors: Kitindi Edvin Jonathan , Mangare Catherine Francis , Kabir Asif
Published: July 2020

Infrastructure sharing is a practical resource utilization strategy among mobile network operators (MNOs). The rapid growth of data flow and technology migration has increased the costs for both infrastructure deployment and management. Hence, to ensure effective resource utilization, researchers propose a joint venture towers construction for the mobile network in Tanzania. Cost reduction analysis for tower construction has been done through game theory. It has been observed that there is significant cost saving by the MNOs sharing the infrastructure. Based on game theory, it was found that 50% of the cost can be saved when the MNOs cooperate in tower construction, which in turn improves services to the users and increase the network rollout to the remote area. In general, network infrastructure sharing (NIS) benefits both operators and the public at large. The MNOs can have a significant financial saving by avoiding the costs of construction or upgrading the overlapping sites, consolidating the existing sites, and by reducing expenses related to rents, maintenance, and transmission.
Culture in Thai Society and Online Virtual Communities
Authors: Winley Graham Kenneth , Sriyabhand Tipa
Published: July 2020

Cultural characteristics of an online virtual community (VC) are compared with cultural characteristics of Thai society (TS). Cultural characteristics are analyzed using Hofstede's dimensions and data from a sample of 369 Thai citizens who are active members of a VC. Also, associations between cultural characteristics and personal characteristics (gender, age, education, VC experience, and work position) were examined in both contexts. The findings indicate (1) individualism, masculinity, and indulgence are more evident in TS than in a VC; (2) in a VC, there were no significant differences between males and females. In TS, males placed more emphases on power distance and uncertainty avoidance and less on long term orientation; and (3) in a VC, only age and experience were associated significantly with cultural dimensions. In TS, work position was the only characteristic that was not associated significantly with cultural dimensions. Practical implications of the findings are discussed.
Artificial Bee Colony-Based Approach for Privacy Preservation of Medical Data
Authors: Mewada Shivlal , Gautam Sita Sharan , Sharma Pradeep
Published: July 2020

A large amount of data is generated through healthcare applications and medical equipment. This data is transferred from one piece of equipment to another and sometimes also communicated over a global network. Hence, security and privacy preserving are major concerns in the healthcare sector. It is seen that traditional anonymization algorithms are viable for sanitization process, but not for restoration task. In this work, artificial bee colony-based privacy preserving model is developed to address the aforementioned issues. In the proposed model, ABC-based algorithm is adopted to generate the optimal key for sanitization of sensitive information. The effectiveness of the proposed model is tested through restoration analysis. Furthermore, several popular attacks are also considered for evaluating the performance of the proposed privacy preserving model. Simulation results of the proposed model are compared with some popular existing privacy preserving models. It is observed that the proposed model is capable of preserving the sensitive information in an efficient manner.
Construction and Application of Regional Medical Information Sharing System Based on Big Data
Authors: Zhang Yuanyuan
Published: July 2020

With the popularization of network application and the rapid development of electronic science, big data technology is constantly maturing and widely used in various fields. For the continuous development of regional medical informatization in China, based on the concept of big data technology and regional medical information data sharing, this paper adopts big data to improve the quality and efficiency of medical information service so as to realize the reasonable distribution and sharing of medical resources and provide references for medical service innovation in China.
Translating the Customer's Feelings Into the Product Characteristics
Authors: Rianmora Suchada , Mahitthiburin Kornpong , Tongpinkaew Jinatta
Published: July 2020

The aim of the article is to predict and recommend the guidelines for designing and selecting the new trend of product to meet customer requirements. Kansei engineering (KE) and factor analysis are applied as the tools for evaluating and translating customer feelings to physical design components. In order to demonstrate the proposed concepts, a vision correction eyewear for a round-faced customer has been used as the design case study. Trendy eyewear design is inspired by young people in urban areas; therefore, Bangkok metropolitan has been selected as the target area for launching surveys to observe customer perceptions. After applying KE and factor analysis on the interviewed data, the recommended sets of product characteristics are extracted and formed as the drafted designs that might satisfy the customer requirements. Moreover, using the proposed approach may help shop owners and manufacturers to offer the right products to the customers at the right time where the occurrence of overstocking or understocking situations may be reduced.
Toward a Theory Development on the Synergetic Entrepreneurship in the Hotel Industry
Authors: Camillo Angelo A.
Published: July 2020

The study uses the innovative model of Albergo Diffuso, or 'Dispersed Hotel', to substantiate the theory development of the organic synergetic entrepreneurship in hospitality. In this context, it involves the interrelationship between hotel management; restoration of ancient, inhabitable, and abandoned architectures; upcycling sustainability; and the synergetic interplay of all stakeholders. Currently, the number of abandoned structural architectures in Italy is about seven million. This initiative is beneficial to entrepreneurs engaging in upcycling abandoned structures to revive them and create jobs while adding value to the local economy. Identifying the development of concept will serve as the building block to create a synergetic framework for future research and for practitioners in the field.
Research on Ant Colony Optimization With Tabu Search Ability
Authors: Xu Li
Published: July 2020

TSP (traveling salesman problem) is a classical problem in combinatorial optimization. It's not totally solved; the route number and the number of cities has increased exponentially, so we couldn't find the best solution easily. This paper does a lot research of tabu search (TS) besides AA and proposes a new algorithm. Making use of TS's advantages, the new proposed algorithm's performance is meliorated. Firstly, aiming at solving AA's slow convergence, the authors increase the pheromone of the best route, decrease the pheromone of the worst route, to increase the conductive ability of the pheromone to the algorithm. Secondly, aiming at solving AA's being premature, this paper introduces TS into AS's every iteration. The TS can help the algorithm find a better solution. So, the new algorithm's convergence speed is quickened, and its performance is improved. At last, this paper applied the algorithm to the traveling salesman problem to test its performances. The simulation results show that the new algorithm could find optimum solutions more effectively in time and quantity.
Brain Signal Classification Based on Deep CNN
Authors: Gao Terry , Wang Grace Ying
Published: July 2020

It is essential to increase the accuracy and robustness of classification of brain data, including EEG, in order to facilitate a direct communication between the human brain and computerized devices. Different machine learning approaches, such as support vector machine (SVM), neural network, and linear discrimination analysis (LDA), have been applied to set up automatic subjective-classifier, and the findings for their capacities in this regard have been inconclusive. The present study developed an effective classifier for human mental status using deep learning in a convolutional neural network. In contrast to most previous studies commonly using EEG waveform or numeric value of brain signals for classification, the authors utilised imaging features generated from EEG data at alpha frequency band. A new model proposed in this study provides a simple and computationally efficient approach to distinguish mental status during resting. With training, this model could predict new 2D EEG images with above 90% accuracy, while traditional machine learning techniques failed to achieve this accuracy.
UML-Based Data Warehouse Design Using Temporal Dimensional Modelling
Authors: Reddy G. Sekhar , Suneetha Chittineni
Published: July 2020

The design of a data warehouse system deals with tasks such as data source administration, ETL processing, multidimensional modelling, data mart specification, and end-user tool development. In the last decade, numerous techniques have been presented to cover all the aspects of DW. However, none of these techniques stated the recent necessities of DW like visualization, temporal dimensions, record keeping, and so on. To overcome these issues, this paper proposes a UML based DW with temporal dimensions. This framework designs time-dependent DW that allows end-users to store history of variations for long term. Besides, it authorizes to visualize the business goals of organizations in the form of attribute tree via UML, which is designed after receiving user necessities and later reconciling with temporal variables. The implementation of proposed technique is detailed with university education database for quality improvement. The proposed technique is found to be useful in terms of temporal dimension, long-term record keeping, and easy to make decision goals through attribute trees.
Review on Multi-Factor Authentication (MFA) Sources and Operation Challenges
Authors: Neware Rahul , Shrawankar Urmila , Mangulkar Pranay , Khune Sushil
Published: July 2020

In recent years, with the mushrooming of internet-enabled mobile devices, there has been a corresponding increase in information and data being transmitted and received. This development has raised concerns about security and one of the crucial components associated with it: authentication. With a wide variety of services and communication being executed online nowadays, user authentication has come to encompass diverse fields, from online bill payments, management of entry, or access rights to vital correspondence, and much more. This paper looks at what authentication is and traces its checkered evolution, from its earliest simple single-factor version, then growing into two-factor mode and finally morphing into multi-factor (MFA) authentication. Now MFA, incorporating biometrics, is gaining widespread acceptance across numerous fields, mainly because it is dependable, quick, user-friendly, and ensures advanced safety and security. This paper, in addition to reviewing some sophisticated and potential MFA sources, also briefly dwells on the different ways MFA is being integrated.
Local Food as a Tool of Tourism Development in Regions
Authors: Kiráľová Alžbeta , Malec Lukáš
Published: July 2020

This study aims to identify the importance of local food for both the demand and supply sides and to show how local food can be bounded with tourism development in the region. The data presented are based on secondary and primary research. Secondary research includes the literature review and content analysis of documents. The qualitative research included a questionnaire survey among guests of the gastronomic establishments and entrepreneurs. Partial least squares variant of linear discriminant analysis (PLS-LDA) and partial least squares (PLS) as an alternative to standard multivariate methods were used to show the gastronomic establishments guests' and entrepreneurs' opinions on local seasonal food and beverages. The opinions are moreover related to the economically driven interest of guests and entrepreneurs. Based on the typical random variable source, data were gathered from three Czech regions covering the scope of this study. The significant disputes between opinions on local food and beverages are directly applicable in practice, including individual items.
Effects of Pulsed and DC Body-Diode Current Stress on the Stability of 1200-V SiC MOSFET I-V Characteristics
Authors: Green Ronald , Lelis Aivars J. , Nouketcha Franklin L.
Published: July 2020

1,200-V and 1,700-V SiC power MOSFETs from multiple suppliers were subject to dc and pulsed-current stress of the body-diode. Three of the five suppliers of 1,200-V devices evaluated showed no significant bipolar degradation, but the other two supplier’s devices showed varying degrees of degradation due this bipolar phenomenon. Electrical results of newly released 1,700-V devices from two suppliers showed significant degradation in the body-diode and MOSFET I-V characteristics following both dc and pulsed-current stress of their body-diodes. The electrical results presented in this work are consistent with basal plane dislocations (BPDs) that form stacking faults during forward conduction of the body-diode. Significant drift in the body-diode forward voltage and MOSFET on-resistance indicates that a much higher BPD density may be present in 1,700-V devices in comparison to the more mature 1,200-V device offerings. The likely presence of BPDs can lead to significant reliability issues in some modern SiC power MOSFETs, and their distribution seems to vary across suppliers and among devices with the same rating and from the same supplier. These differences are likely due to variations in wafer and device processing among suppliers and within a given product line from a single supplier.
The Study of Comparative Characterization between SiC MOSFET and Si- IGBT for Power Module and Three-Phase SPWM Inverter
Authors: Lee Heng , Liu Chun Kai , Chang Tao Chih
Published: July 2020

This paper focuses on how to define and integrate the system level and power module level with optimal conditions in SiC and Si-IGBT. To investigate the above situation, we compare the performance of SiC and Si-IGBT in power module and system level at different ambient temperatures. At the same maximum junction temperature 150°C and ambient temperature at 25°C and 80°C, it found that SiC type electrical resistance, maximum endurable current, and voltage could be better than the IGBT type power module above 20%. On the other hand, the simulation of three-phase inverter at different switching frequency such as 10kHz, 15kHz, 20kHz, 30kHz and it had been observed that the power loss of SiC inverter are 78% less for 10kHz switching frequency; 82% less for switching frequency at 15kHz; 85% less for 20kHz of switching frequency; 89% less for switching frequency at 30kHz in the Si-IGBT three-phase SPWM inverter at ambient temperature 80°C.
New Insight into Single-Event Radiation Failure Mechanisms in Silicon Carbide Power Schottky Diodes and MOSFETs
Authors: Witulski Arthur F. , Ball Dennis R. , Johnson Robert A. , Galloway Kenneth F. , Sternberg Andrew L. , Alles Michael L. , Reed Robert A. , Schrimpf Ronald D. , Hutson John M. , Javanainen Arto , Lauenstein Jean-Marie , Grider David , Lichtenwalner Daniel J. , Raman Ashok , Arslanbekov Robert
Published: July 2020

Ion-induced leakage current degradation, and single-event burnout may be manifestestations of the same device mechanisms in both silicon carbide power diodes and MOSFETs. In all cases there is a migration of the electrical field from the front body-drain interface to the back epi-drain n+ interface, with a peak exceeding the critical electric field of silicon carbide, causing avalanche generation which enables high short-duration power densities during an approximate 20 psec window after the ion strike. The degradation effect in JBS SiC diodes seems to be independent of the length of the epitaxial region for different voltage-rated diodes.
Impact of Proton Irradiation on Power 4H-SiC MOSFETs
Authors: Lebedev Alexander A. , Kozlovski Vitalii V. , Fursin Leonid , Strel'chuk Anatoly M. , Levinshtein Mikhail E. , Ivanov Pavel A. , Zubov Alexander V.
Published: July 2020

Impact of 15 MeV proton irradiation on electrical characteristics and low frequency noise has been studied in high-power vertical 4H-SiC MOSFETs of 1.2 kV-class at doses 1012 £ F £ 1014 cm-2. The maximum value of the field-effect mobility µFЕ depends weakly on F up to F = 2×1013 cm-2. At F = 4×1013 cm-2, the character of the µFЕ(Vg) dependence changes radically. The maximum µFЕ decreases approximately threefold. The dose Fcr corresponding to the complete degradation of the device is about 1014 cm-2. It can be estimated as Fcr» he/n0, where he is the electron removal rate and n0 is the initial electron concentration in the drift layer. In the entire frequency range of analysis f, gate voltages, and drain-source biases, the frequency dependence of the current spectral noise density SI(f) follows the law SI ~ 1/f. From the data of noise spectroscopy, the density of traps in the gate oxide Ntv has been estimated. In non-irradiated structures, Ntv » 5.4×1018 cm-3eV-1. At Ф = 6×1013 cm-2, the Ntv value increases to Ntv » 7.2×1019cm-3eV-1. The non-monotonic behavior of the output current Id and the level of low frequency noise on dose F has been demonstrated.
Comparative Numerical Analysis of the Robustness of Si and SiC PiN Diodes Against Cosmic Radiation-Induced Failure
Authors: Huang Yaren , Lechner Benedikt , Wachutka Gerhard
Published: July 2020

This work aims at extending the predictive simulation technique for cosmic ray-induced failure analysis from Si PiN diodes [1] to SiC PiN diodes. Accurate 3D cylindrical-symmetric transient simulations were performed with a minimum mesh size of 20nm at the center track of the impinging ion and a maximum time step of 0.1ps during the development of the ion-induced transient current. We made a comparative study between a SiC PiN diode and a Si PiN diode with the same blocking voltage of 1.5kV, using the same heavy ion transportation models. In the simulation, we observed different ion-induced current transients, differing not only in the peak value of the current, but also in its duration. Due to different physical mechanisms, the dependence of the ion-induced current on the reverse pre-bias voltage and the numerical mesh adaptations are also different. Eventually, we brieflydiscuss electro-thermal simulations, which indicate once more that the ion-induced transient current in the SiC PiN diodes under consideration is primarily drift current and involves only negligible impact ionization.
Effect Irradiation with 15 MeV Protons on Properties of 4H- SiC UV Detectors
Authors: Kalinina Evgenia V. , Lebedev Alexander A. , Kozlovski Vitalii V. , Zabrodski Vladimir , Nikolaev Andrei , Shvarts Maxim Z. , Levina Svetlana
Published: July 2020

The effect of irradiation by protons with an energy of 15 MeV with fluences of (1-40)٠1012 cm-2 on the spectral characteristics of UV 4H-SiC photodetectors was considered. Photodiodes with Schottky barriers were formed by thermal vacuum sputtering with a thickness of 20 nm and a diameter of 8 mm on 4H-SiC structures with CVD epitaxial layers with a concentration of uncompensated donors Nd-Na=(1-4)٠1014 cm-3 grown on n+-4H-SiC substrates. UV photodetectors withstand irradiation by protons with a fluences of 4٠1013 cm-2 with a photosensitivity improvement due to the gettering of simple radiation defects by localized cluster and amorphous areas, and partial structural improvement of the irradiated material. Irradiation of photodetectors by 15 MeV protons with a fluence of 4٠1012 cm-2 at a temperature of 2000 C led to an increase in quantum efficiency compared to samples irradiated in similar modes at 250 C due to an additional defective rearrangement.