scholarly journals E1 Signal Processing of the Galileo System in the Navigation Receiver

2021 ◽  
Vol 23 (3) ◽  
pp. E46-E55
Author(s):  
Lucjan Setlak ◽  
Rafał Kowalik
Keyword(s):  
Signal Processing ◽  
Navigation System ◽  
Model Simulation ◽  
Research Problem ◽  
Problem Analysis ◽  
Analysis Model ◽  
Practical Applications ◽  
Navigation Data ◽  
The Subject ◽  
Research Tools

The subject of this article are issues related to the navigation system in the field of analyzing the processed signal in the GNSS system receiver. The main purpose of the work is to discuss the Galileo E1 signal processing methods in the GNSS navigation system receiver, supported by adapted research tools in terms of solving the research problem (analysis, model, simulation tests) and the mathematical apparatus used. Key studies are concentrated around the process of generating the navigation data, dispersing sequences and signal modulation. Thus, when designing a receiver, it is better to use the simulation signals than the real ones, since one can get more control over the properties of the received signal. In the final part of the work, in accordance with the subject of research, based on the developed appropriate research tools, observations and final conclusions were formulated, which have practical applications.

scholarly journals Web Semântica no repositório BRAPCI

2016 ◽  
Vol 9 (2) ◽  
Author(s):  
Nátalia NAKANO ◽  
Talita Cristina da SILVA ◽  
Maria José Vicentini JORENTE ◽  
José Eduardo SANTARÉM SEGUNDO
Keyword(s):  
Semantic Web ◽  
Information Science ◽  
Research Problem ◽  
Human Knowledge ◽  
Practical Applications ◽  
The World ◽  
Working Together ◽  
The Subject ◽  
Web Research ◽  
Productive Authors

In 2001 Tim Berners-Lee revealed to the world what he wanted for the future of Web - man and machine working together to develop complex tasks, and that the Web could leverage the way human knowledge is acquired. Since then researchers from different fields of knowledge have engaged in scientific and empirical research to make this dream come true. In this context, the research problem of this article is established: What is the current situation of Semantic Web research in Brazil in Information Science? Who are the researchers of this theme in our country? What are the institutions that support these studies? The present study aimed at listing the most productive authors, institutions that support their research and the specific issues of their investigations. We conducted a literature review in Base de Dados Referencial de Artigos de Periódicos em Ciência da Informação (BRAPCI). We retrieved 41 articles, excluded five for not belonging to Brazilian authors and Brazilian institutions. From the analysis of this corpus, we realized the need to include additional keywords to better understanding of specific studies encompassed by the theme. Thus, we included the keywords: SPARQL, SKOS, RDF and ontology. It was concluded that the studies on the Semantic Web under the aegis of Information Science mostly perform theoretical and philosophical studies, while the computer science professionals seek practical applications of the topic. It was also concluded that a study including other databases could reveal other authors and institutions relevant to the subject of study.

scholarly journals Study the reality of the current documents department in the Real Estate Documents and Documentation Department at the Ministry of Housing

2020 ◽  
Author(s):  
حميّد بن سالم بن حميد الخصيبي ◽  
د. عــــزت ســـعـــد حـــســان
Keyword(s):  
Real Estate ◽  
Management System ◽  
Research Problem ◽  
Current Status ◽  
The Real ◽  
The Real Estate ◽  
The Subject ◽  
Descriptive Approach ◽  
Research Tools

The research relied on its course on the descriptive approach starting from defining the research problem and its questions and hypotheses and addressing the topic, through assessing the current status of the research sample and monitoring its features, using that (research) with the research  tools from field visits and inspections, interviews with officials, and a questionnaire, tools that helped in Obtaining information on the subject and sample of the research, and contributed to identifying the shortcomings and strengths that clarify the results of the application of the document and archive management system or not, and then the study came out with a set of results and presented some recommendations that would contribute to the effectiveness of managing these documents in an optimal way, and included The study is based on a set of pictures and illustrations, which are appended at the end of it with a set of sources and references that served the topic.

Peculiarities of family roles distribution in the marrige subsystem

2020 ◽  
Vol 3 (152) ◽  
pp. 57-64
Author(s):  
O. O. Oliinyk ◽  
Keyword(s):  
Research Methods ◽  
Scientific Information ◽  
Married Couples ◽  
Research Problem ◽  
Psychological Climate ◽  
Theoretical Research ◽  
Problem Analysis ◽  
Family Roles ◽  
Marital Relations ◽  
The Family

Changing the system of family values, views of the society on the significance and functioning of the family institution contribute to the transformation of marital role relationships in modern families. The already formed model of role interaction, the ability of spouses to define and clearly distribute family roles and to treat them responsibly is the important factors in building constructive marital relations and creating a favorable psychological climate in the family. Objective. The research deals with the analysis of the essence of the “family role” concept and the classification of family roles; experimental definition and analysis of the main types of family roles in marital relations. Methods. Theoretical research methods were used to solve the research problem: analysis of scientific psychological literature, generalization method, systematization of scientific information. To solve the second part of the set objective, the empirical research methods were used, such as: conversation, psychodiagnostic method “Distribution of roles in the family” by Yu.Ye. Alioshyna, L.Ya. Hofman, O.M. Dubrovska, and also the method of processing and quantitative and qualitative interpretation of results. The research was conducted during September-October 2020. The study involved 11 married couples (husband and wife) with different marital experience of 22 people aged 25 to 47 years (Kyiv). All the couples have children aged 1 to 20 years. The results of an empirical study of the peculiarities of family roles distribution showed that the roles of entertainment organizer (63.64 %), master (mistress), (72.73 % and 63.64 %), the family subculture organizer (54, 55 % and 45.45 %) women and men share almost equally; the roles of educator and “psychotherapist” is more typical for women (90.91 % and 81.82 %); The role of sexual partner and the partner responsible for material support is more often performed by men (90.91 % and 72.73 %). The prospects for further research are seen in the study of role interaction in the parental families of adolescents and young people as a prerequisite for their future family roles.

Student attitudes towards linear algebra: an attempt to roll back the fog

2020 ◽  
Author(s):  
Barry J Griffiths ◽  
Samantha Shionis
Keyword(s):  
Student Perceptions ◽  
Linear Algebra ◽  
Student Attitudes ◽  
Linear Independence ◽  
Negative Emotions ◽  
Practical Applications ◽  
Key Concepts ◽  
The Subject ◽  
Roll Back

Abstract In this study, we look at student perceptions of a first course in linear algebra, focusing on two specific aspects. The first is the statement by Carlson that a fog rolls in once abstract notions such as subspaces, span and linear independence are introduced, while the second investigates statements made by several authors regarding the negative emotions that students can experience during the course. An attempt is made to mitigate this through mediation to include a significant number of applications, while continually dwelling on the key concepts of the subject throughout the semester. The results show that students agree with Carlson’s statement, with the concept of a subspace causing particular difficulty. However, the research does not reveal the negative emotions alluded to by other researchers. The students note the importance of grasping the key concepts and are strongly in favour of using practical applications to demonstrate the utility of the theory.

Graphed equilibrium parameters of channels formed in sediment

1980 ◽  
Vol 7 (1) ◽  
pp. 93-104 ◽  
Author(s):  
A.W. Peterson ◽  
T. Blench
Keyword(s):  
Subject Matter ◽  
Three Dimensional ◽  
Numerical Data ◽  
Reference List ◽  
Laboratory Measurements ◽  
Practical Applications ◽  
Circular Pipes ◽  
The Subject ◽  
Specialized Mathematics ◽  
Major Reference

This paper, for river engineers and their environmental counterparts, presents and explains the origin and potential of four-dimensional charts that smooth most of the world's numerical data obtained from the equilibrium dimensions of sand rivers, gravel rivers, and laboratory flumes. These charts aim to provide a practical service comparable with that provided by factual plots on the comprehensive classic three-dimensional Stanton friction-factor diagram for circular pipes and clean Newtonian fluid. In the river problems, especially, the existence of different phases (whose transitions are not susceptible to formulation), the inadequacies of textbook theories even for simple phases, and the unavoidable imperfections of both field and laboratory measurements combine to prevent responsible design. The remedy is a graphing of total information backed by references from which its reliability and practicability can be assessed.The references have been chosen to contain principal information in the forms of: (i) usable photos, graphs, and tables; (ii) explanations free from specialized mathematics and speculative arguments; and (iii) papers with discussions, authors' replies, and further useful references (since a major reference list would be too long for this paper). Because condensation has had to be extreme the authors will be glad to attempt answers to discussions and questions on the subject matter, its practical applications, and its implications in teaching and research.

An ICA Algorithm Based on Symmetric and Asymmetric Generalized Gaussian Model

2011 ◽  
Vol 204-210 ◽  
pp. 470-475
Author(s):  
Feng Zhao ◽  
Yun Jie Zhang ◽  
Min Cai
Keyword(s):  
Independent Component Analysis ◽  
Gradient Method ◽  
Gaussian Model ◽  
Component Analysis ◽  
Independent Component ◽  
Blind Signal Separation ◽  
Natural Gradient ◽  
Analysis Model ◽  
Practical Applications ◽  
Source Signal

Maximum likelihood estimation is a very popular method to estimate the independent component analysis model because of good performance. Independent component analysis algorithm (the natural gradient method) based on this method is widely used in the field of blind signal separation. It potentially assumes that the source signal was symmetrical distribution, in fact in practical applications, source signals may be asymmetric. This article by distinguishing that the source signal is symmetrical or asymmetrical, proposes an improved natural gradient method based on symmetric generalized Gaussian model (People usually call generalized Gaussian model) and asymmetric generalized Gaussian model. The random mixed-signal simulation results show that the improved algorithm is better than the natural gradient separation method.

Model Simulation of the Software Compatibility Testing Based on Android System

2014 ◽  
Vol 687-691 ◽  
pp. 2640-2643
Author(s):  
Xiang Gang Wang
Keyword(s):  
Model Simulation ◽  
System Simulation ◽  
Analysis Model ◽  
Compatibility Analysis ◽  
Detection Analysis ◽  
Android System ◽  
Simulation Results

in current, the software compatibility testing of Android system has been a difficulty, mainly because the software features of which has bigger difference cannot establish constrained detection analysis model. To solve this problem, a new compatibility analysis model of Android system is proposed. Android portfolio software is made compatibility testing modeling with a decomposition thought. The software features after decomposition are made repartition test modeling. The steady probability in different region combination is analyzed, and thus it represents the compatibility of Android system. Simulation results show that this kind of model can preferably complete the compatibility analysis work of Android system.

scholarly journals MODEL MEDIA PEMBELAJARAN E-KOMIK UNTUK SMA

2018 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Wiwik Akhirul Aeni ◽  
Ade Yusupa
Keyword(s):  
Model Development ◽  
Quality Of Education ◽  
Analysis Model ◽  
Learning To Read ◽  
Prototype Development ◽  
Digital Format ◽  
Electronic Model ◽  
Innovative Learning ◽  
The Subject

The development of learning media model becomes a necessity for improving the quality of education in Indonesia. Following the development of technology and information, new models continue to be developed, one of which is comic. This study aims to develop a model of electronic comic (e-Comic) as a medium of learning. With the ADDIE development method, it is done through needs analysis, model design, prototype development, prototype implementatio (testing) and evaluation of prototype implementation results to the field. The result is a comic electronic model in which graphic-shaped graphics are highlighted to deliver learning materials in accordance with the applicable curriculum. The material is delivered in story form so the delivery is not rigid. Implementation of field trial prorotype obtained data that the user liked the model of this e-Comic learning media and feel like learning to read comics with digital format. The conclusion of the development of e-Comic model, innovative learning media, fun, effective and efficient, so as to increase the students' attention in understanding the subject AbstrakPengembangan model media pembelajaran menjadi kebutuhan untuk peningkatan kualitas pendidikan di Indonesai. Mengikuti perkembangan teknologi dan informasi, model-model baru terus dikembangkan dari waktu ke waktu. Komik yang dimaknai sebagai sebuah gambar kartun berteks mampu menyampaikan sebuah pesan dengan gaya yang ringan dan menyenangkan.Tujuan pembuatan model ini untuk membuat sebuah model berformat elektronik komik (E-komik) sebagai media pembelajaran menyampaikan materi pendidikan. Dengan metode pengembangan ADDIE, yang dimulai dengan kegiatan Analisis Kebutuhan, Desain/Perancangan Model, Development Prototype, Implementasi Prototype berbentuk ujicoba prototype ke user dan dilanjutkan dengan Evaluasi hasil implementasi prototype ke lapangan model Elektronik komik ini dikembangkan. Hasil dari pengembangan ini adalah sebuah model elektronik komik yang didalamnya berupa grafis berbentuk kartun ditonjolkan untuk menyampaikan materi-materi pembelajaran sesuai dengan kurikulum yang berlaku di sekolah. Materi disampaikan dalam bentuk cerita sehingga penyampaiannya tidak kaku. Implementasi ujicoba prorotype dilapangan diperoleh data bahwa user menyukai model media pembelajaran E-komik ini dan merasa belajar seperti membaca komik dengan format digital. Kesimpulan pengembangan model E-komik yang dilakukan menjadi salah satu jawaban atas kebutuhan terhadap media pembelajaran yang inovatif, menyenangkan, efektif dan efisien, sehingga dapat meningkatkan perhatian siswa dalam memahani mata ajar. Untuk itu penerapannya dapat dilakukan secara bertahap pada SMA tertentu.

scholarly journals EXPERIMENTS BASED OF TWO STAY TWO STRAY MODEL APPLICATION TO IMPROVE LEARNING OUTCOMES WATER CYCLE OF STUDENT ELEMENTARY SCHOOL

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Dwi Nurpalupi Retnosari ◽  
Suharno Suharno ◽  
Peduk Rintayati
Keyword(s):  
Elementary School ◽  
Learning Outcomes ◽  
Water Cycle ◽  
Fifth Grade ◽  
Analysis Model ◽  
Interactive Analysis ◽  
Data Validity ◽  
The Subject ◽  
Quality Learning ◽  
Document Review

<em>The teacher have responsibility to encourage the development of quality learning outcomes in students. The purpose of this research is to improve learning outcomes water cycle by applying experiments based of two stay two stray model in fifth grade elementary school. The type of this research is classroom action research held in three cycles. The subject of this research is fifth grade elementary school amounting to 25 students, researchers and the teacher in that class. The data were collected by interview, observation, test, and document review. Data validity is tested by content validity, triangulation of source and technique. The data analysis used descriptive comparative technique and interactive analysis model Miles Huberman. The conclusion of this research is experiments based of two stay two stray model can improve the learning outcomes water cycle.</em>

Sign in / Sign up

Export Citation Format

Share Document