scholarly journals LocaRDS: A Localization Reference Data Set

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5516
Author(s):  
Matthias Schäfer ◽  
Martin Strohmeier ◽  
Mauro Leonardi ◽  
Vincent Lenders
Keyword(s):  
Mobile Networks ◽  
Real World ◽  
Scientific Literature ◽  
Reference Data ◽  
Data Set ◽  
Advantages And Disadvantages ◽  
Current State ◽  
Practical Research ◽  
State Of Art

The use of wireless signals for the purposes of localization enables a host of applications relating to the determination and verification of the positions of network participants ranging from radar to satellite navigation. Consequently, this has been a longstanding interest of theoretical and practical research in mobile networks and many solutions have been proposed in the scientific literature. However, it is hard to assess the performance of these in the real world and, more importantly, to compare their advantages and disadvantages in a controlled scientific manner. With this work, we attempt to improve the current state of art methodology in localization research and to place it on a solid scientific grounding for future investigations. Concretely, we developed LocaRDS, an open reference data set of real-world crowdsourced flight data featuring more than 222 million measurements from over 50 million transmissions recorded by 323 sensors. We demonstrate how we can verify the quality of LocaRDS measurements so that it can be used to test, analyze and directly compare different localization methods. Finally, we provide an example implementation for the aircraft localization problem and a discussion of possible metrics for use with LocaRDS.

Rating assessment of economic security of municipalities in the region

2021 ◽  
Vol 97 (4) ◽  
pp. 72-81
Author(s):  
M. S. Syupova ◽  
Keyword(s):  
Local Governments ◽  
Economic Condition ◽  
Economic Security ◽  
Management Tool ◽  
Existing Problems ◽  
Advantages And Disadvantages ◽  
Current State ◽  
Regional Authorities ◽  
Negative Factors

Ensuring the economic security of municipalities is one of the key conditions for stable socio-economic de-velopment of the region. Recently, intraregional differentiation of territories has been growing, which increases the risk of the formation of negative factors that reduce the quality of life of the population. In order to neutralize and prevent acute social and economic problems, constant monitoring of the current state of the municipal econ-omy is necessary. As such a management tool, a rating assessment of the economic security of municipalities in the region can be used. The ranking of territories allows you to visualize the relative advantages and disadvantages of the development of territories. In addition, a systematic comparative analysis of controlled socio-economic pa-rameters will allow regional authorities to evaluate the results of the activities of local governments and improve the effectiveness of regional socio-economic policy. The article proposes a methodology for rating the economic security of municipalities, during which it is possible to visually assess the depth of the threats studied at the level of each territory. To this end, the proposed methodology is based on a system of indicators that identify the main problem areas of the socio-economic condition of the territories. To form the rating, the studied indicators are normalized and integral indices characterizing the level of economic security of municipalities are calculated. The methodology proposes criteria for assessing the level of municipal economic security (high; above average; aver-age; crisis; critical). According to the results of the study, a rating of municipal districts of the Khabarovsk Terri-tory was compiled. The study showed that the territories of the region are characterized by an unstable socio-economic condition. The leading positions in the rating are occupied by areas with an average level of economic security. Most municipal districts of the region have a crisis level of economic security, which provides for the de-velopment of a set of measures aimed at eliminating existing problems.

scholarly journals The Expanding Role of Real-World Evidence Trials in Health Care Decision Making

2019 ◽  
Vol 14 (1) ◽  
pp. 174-179 ◽  
Author(s):  
David C. Klonoff
Keyword(s):  
Real World ◽  
Clinical Evidence ◽  
Real World Data ◽  
Medical Products ◽  
Advantages And Disadvantages ◽  
Randomized Controlled ◽  
Real World Evidence ◽  
Care Decision

Real-world evidence (RWE) is the clinical evidence about benefits or risks of medical products derived from analyzing real world data (RWD), which are data collected through routine clinical practice. This article discusses the advantages and disadvantages of RWE studies, how these studies differ from randomized controlled trials (RCTs), how to overcome barriers to current skepticism about RWE, how FDA is using RWE, how to improve the quality of RWE, and finally the future of RWE trials.

Moodle options in the process of scientific events preparation and organization

2020 ◽  
pp. 16-24
Author(s):  
N. S. Diakova ◽  
O. G. Popova
Keyword(s):  
Information Technologies ◽  
Scientific Literature ◽  
Personal Data ◽  
Dairy Farming ◽  
Educational Process ◽  
Intellectual Work ◽  
Advantages And Disadvantages ◽  
Current State ◽  
Scientific Event ◽  
Preparatory Work

The article is devoted to the automation of scientific events preparation through the information technologies introduction. The authors analyzed the current state of the problem, identified the advantages and disadvantages of some information platforms of scientific conferences, substantiated the advantages of free LMS Moodle. A review of scientific literature is presented, three main directions of using Moodle in the educational process are identified and characterized. It is established that the experience of using Moodle in the preparation and organization of scientific and other events is practically not reflected in the publications. The characteristic of the preparatory work algorithm and the procedures for using Moodle system in the preparation of a scientific event with an undetermined number of participants is given, the stages and content of custom blocks are described in detail on the example of a real event. Much attention is given to the creation of a module for collecting and filling out applications, in which the Moodle element Databases is selected. The problem of protecting the participant's personal data and his intellectual work has been solved with the use of different database blanks for participants and for organizers through the Presets tab. The authors describe the main functions that Moodle can solve for organizing events. You can get acquainted with the implementation of the system considered in the article on the Portal of Scientific Conferences of Vologda State Dairy Farming Academy by N. V. Vereshchagin, located at: https:// moodle.molochnoe.ru/sci/

Implementation of Language Education in Russian and Foreign Universities

2020 ◽  
Vol 8 (2) ◽  
pp. 53-58
Author(s):  
A. Morozova ◽  
T. Kostyukova
Keyword(s):  
Comparative Analysis ◽  
Research Methods ◽  
Scientific Literature ◽  
Language Education ◽  
Language Training ◽  
European Universities ◽  
Current State ◽  
Foreign Universities ◽  
State Content

The article provides a comparative analysis of the practice of language education in modern Russian and European universities in the course of studying the fundamental documents on the problem, as well as consideration of the current state, content, goals, methods and monitoring the quality of language training of students. Research methods: analysis of scientific literature on the problem; study and generalization of the accumulated pedagogical experience, etc.

Using Online Panels in Psychological Research

2012 ◽  
Author(s):  
Anja S. Göritz
Keyword(s):  
Longitudinal Study ◽  
Psychological Research ◽  
Point Of View ◽  
Quality Of Data ◽  
Cross Sectional ◽  
Web Based ◽  
Advantages And Disadvantages ◽  
Current State ◽  
Online Panels

Online panels (OPs) are an important form of web-based data collection, as illustrated by their widespread use. In the classical sense, a panel is a longitudinal study in which the same information is collected from the same individuals at different points in time. In contrast to that, an OP has come to denote a pool of registered people who have agreed to occasionally take part in web-based studies. Thus with OPs, the traditional understanding of a panel as a longitudinal study is broadened because an OP can be employed as a sampling source for both longitudinal and cross-sectional studies. This article gives an overview of the current state of use of OPs. It discusses what OPs are, what type of OPs there are, how OPs work from a technological point of view, and what their advantages and disadvantages are. The article reviews the current body of methodological findings on doing research with OPs. Based on this evidence, recommendations are given as to how the quality of data that are collected in OPs can be augmented.

scholarly journals AN EMPRICAL POINT ERROR MODEL FOR TLS DERIVED POINT CLOUDS

2016 ◽  
Vol XLI-B5 ◽  
pp. 557-563 ◽  
Author(s):  
Mustafa Ozendi ◽  
Devrim Akca ◽  
Hüseyin Topan
Keyword(s):  
Real World ◽  
Incidence Angle ◽  
A Priori ◽  
Laser Scanner ◽  
Point Clouds ◽  
Error Model ◽  
Random Errors ◽  
Data Set ◽  
3D Point Clouds

The random error pattern of point clouds has significant effect on the quality of final 3D model. The magnitude and distribution of random errors should be modelled numerically. This work aims at developing such an anisotropic point error model, specifically for the terrestrial laser scanner (TLS) acquired 3D point clouds. A priori precisions of basic TLS observations, which are the range, horizontal angle and vertical angle, are determined by predefined and practical measurement configurations, performed at real-world test environments. A priori precision of horizontal (𝜎<sub>𝜃</sub>) and vertical (𝜎<sub>𝛼</sub>) angles are constant for each point of a data set, and can directly be determined through the repetitive scanning of the same environment. In our practical tests, precisions of the horizontal and vertical angles were found as 𝜎<sub>𝜃</sub>=±36.6<sup>𝑐𝑐</sup> and 𝜎<sub>𝛼</sub>=±17.8<sup>𝑐𝑐</sup>, respectively. On the other hand, a priori precision of the range observation (𝜎<sub>𝜌</sub>) is assumed to be a function of range, incidence angle of the incoming laser ray, and reflectivity of object surface. Hence, it is a variable, and computed for each point individually by employing an empirically developed formula varying as 𝜎<sub>𝜌</sub>=±2−12 𝑚𝑚 for a FARO Focus X330 laser scanner. This procedure was followed by the computation of error ellipsoids of each point using the law of variance-covariance propagation. The direction and size of the error ellipsoids were computed by the principal components transformation. The usability and feasibility of the model was investigated in real world scenarios. These investigations validated the suitability and practicality of the proposed method.

scholarly journals Indicators for Evaluating the Performance and Quality of Care of Ambulatory Care Nurses

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Joachim Rapin ◽  
Danielle D’Amour ◽  
Carl-Ardy Dubois
Keyword(s):  
Quality Of Care ◽  
Nursing Care ◽  
Scientific Literature ◽  
Future Research ◽  
Quality And Safety ◽  
Limited Information ◽  
Current State ◽  
Outpatient Settings ◽  
Theoretical Foundations

The quality and safety of nursing care vary from one service to another. We have only very limited information on the quality and safety of nursing care in outpatient settings, an expanding area of practice. Our aim in this study was to make available, from the scientific literature, indicators potentially sensitive to nursing that can be used to evaluate the performance of nursing care in outpatient settings and to integrate those indicators into the theoretical framework of Dubois et al. (2013). We conducted a scoping review in three databases (CINAHL, MEDLINE, and EMBASE) and the bibliographies of selected articles. From a total of 116 articles, we selected 22. The results of our study not only enable that framework to be extended to ambulatory nursing care but also enhance it with the addition of five new indicators. Our work offers nurses and managers in ambulatory nursing units indicators potentially sensitive to nursing that can be used to evaluate performance. For researchers, it presents the current state of knowledge on this construct and a framework with theoretical foundations for future research in ambulatory settings. This work opens an unexplored field for further research.

scholarly journals The Impact of the Sharing Economy as an Ecosystem on the Tourism Sector

2021 ◽  
Vol 12 (22) ◽  
pp. 66-88
Author(s):  
Navickas Valentinas ◽  
Ieva Petrokė ◽  
Vaida Bačiulienė ◽  
Tetiana Vasylieva
Keyword(s):  
Business Models ◽  
Scientific Literature ◽  
Sharing Economy ◽  
Study Data ◽  
Quality Of Services ◽  
Advantages And Disadvantages ◽  
Tourism Sector ◽  
Tourism Services ◽  
The Impact

The authors of the article investigated the sharing economy elements as an ecosystem and analyzed the advantages and disadvantages of the sharing economy in the tourism sector. Exploring the elements of the sharing economy's ecosystem can help identify the challenges of globalization and lead to exploiting the sharing economy's potential more efficiently in the tourism sector. The study of the impact of the sharing economy as an ecosystem on the tourism sector is also made relevant by the lack of research examining the advantages and disadvantages of sharing economy models. To determine the impact of the sharing economy on the tourism sector, the authors analyzed the scientific literature. An empirical study of business models based on the sharing economy in the tourism sector was carried out. Moreover, the advantages and disadvantages were identified of the sharing economy in the tourism sector. The authors' analysis has shown that, despite conflicting views on the impact and importance of the sharing economy in the tourism sector, many experts are optimistic about sharing economy-based models in this sector. Research by the authors of the article shows that sharing economy-based businesses are superior to traditional business models.  The sharing economy-based models are preeminent because of more affordable prices for tourists, better satisfaction of individual needs, opportunities to become part of the community, a more comprehensive range of services, better access to tourism services. A better quality of services also highlights the advantages of economy-based businesses. Although the study was conducted in the Lithuanian tourism sector, we can assume that the study data can be unified and applied to analyze similar markets in other countries.

scholarly journals Image Quality in Augmented Binocular Vision: QoE Approximations with QoS and EEG

2017 ◽  
Vol 61 (4) ◽  
pp. 327 ◽  
Author(s):  
Patrick Seeling
Keyword(s):  
Quality Of Service ◽  
Image Quality ◽  
Augmented Reality ◽  
Binocular Vision ◽  
Quality Of Experience ◽  
Reference Data ◽  
Ground Truth ◽  
Data Set ◽  
Gamma Frequency

Augmented reality (AR) applications become increasingly popular, however, little is known about how multimedia consumption interplays with the Quality of Experience (QoE) in these settings. We experimentally evaluate binocular vision augmentation with optical see-through devices by contrasting QoE, expressed by Mean Opinion Scores (MOS), with a ground truth reference data set. We find that the QoE in AR settings (i) is higher for small media impairments and lower for high impairment levels compared to opaque settings, (ii) exhibits an emerging quantifiable relationship with the QoE in traditional setups, (iii) can be approached with common objective image quality metrics as Quality of Service (QoS) factors, and (iv) exhibits a relationship between the Low Gamma frequency band levels determined with consumer-grade electroencephalograms (EEG) and image quality levels as rated by the participants.

scholarly journals CURRENT STATE AND PROSPECTS FOR IMPROVING THE PROCESS OF MILLING FIBROUS SEMI-FINISHED HIGH CONCENTRATION PROCESSES (REVIEW)

2020 ◽  
pp. 315-329
Author(s):  
Aleksandr Vasil'yevich Ushakov ◽  
Yuriy Davydovich Alashkevich ◽  
Viktor Anatol'yevich Kozhukhov ◽  
Valeriy Ivanovich Kovalev
Keyword(s):  
Scientific Literature ◽  
Specific Energy Consumption ◽  
Experimental Studies ◽  
Milling Process ◽  
Fibrous Materials ◽  
High Concentration ◽  
Theoretical Approaches ◽  
Current State ◽  
Fiber Wall

There is presented a review of scientific literature characterizing the main directions of modern research of the process of grinding of fibrous semi-finished products of high consistence. Theoretical approaches are described in the study of qualitative parameters of pulp during its processing in knife grinding machines. Researchers note an increase in the paper-forming properties of the pulp and the physical and mechanical characteristics of the finished product. This paper provides an overview of experimental studies of the high consistence pulp milling process. The effect of high consistence mass grinding intensity on the quality of the finished product is considered, the nature of fiber development when grinding high and low consistence mass is compared. Experimental studies show that an increase in the intensity of exposure when grinding a high consistence mass leads to a decrease in the tensile energy absorption index, and a decrease in the deformation of the paper sheet is also observed with an increase in the grinding intensity. With an increase in the pulp c consistence, a change in the degree of delamination, internal and external fibrillation of the fiber wall is observed. The high-consistence pulp milling process is accompanied by higher specific energy consumption compared to low- consistence pulp milling, but observations at the fiber wall level show a more developed external specific surface area. This review of the scientific literature will serve as a basis for further research on the grinding of high consistence fibrous materials.

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