scholarly journals Geomagnetic data recovery approach based on the concept of digital twins

2021 ◽  
Vol 7 (2) ◽  
pp. 48-56
Author(s):  
Andrey Vorobev ◽  
Vyacheslav Pilipenko
Keyword(s):  
Missing Values ◽  
Auroral Zone ◽  
Automatic Identification ◽  
Digital Twins ◽  
Geomagnetic Data ◽  
Efficient Processing ◽  
Data Source ◽  
Recovery Approach ◽  
Magnetic Station

There is no ground-based magnetic station or observatory that guarantees the quality of information received and transmitted to it. Data gaps, outliers, and anomalies are a common problem affecting virtually any ground-based magnetometer network, creating additional obstacles to efficient processing and analysis of experimental data. It is possible to monitor the reliability and improve the quality of the hardware and soft- ware modules included in magnetic stations by develop- ing their virtual models or so-called digital twins. In this paper, using a network of high-latitude IMAGE magnetometers as an example, we consider one of the possible approaches to creating such models. It has been substantiated that the use of digital twins of magnetic stations can minimize a number of problems and limitations associated with the presence of emissions and missing values in time series of geomagnetic data, and also provides the possibility of retrospective forecasting of geomagnetic field parameters with a mean square error (MSE) in the auroral zone up to 11.5 nT. Integration of digital twins into the processes of collecting and registering geomagnetic data makes the automatic identification and replacement of missing and abnormal values possible, thus increasing, due to the redundancy effect, the fault tolerance of the magnetic station as a data source object. By the example of the digital twin of the station “Kilpisjärvi” (Finland), it is shown that the proposed approach implements recovery of 99.55 % of annual information, while 86.73 % with M not exceeding 12 nT.

scholarly journals Geomagnetic data recovery approach based on the concept of digital twins

2021 ◽  
Vol 7 (2) ◽  
pp. 53-62
Author(s):  
Andrey Vorobev ◽  
Vyacheslav Pilipenko
Keyword(s):  
Missing Values ◽  
Auroral Zone ◽  
Automatic Identification ◽  
Digital Twins ◽  
Geomagnetic Data ◽  
Efficient Processing ◽  
Data Source ◽  
Recovery Approach ◽  
Magnetic Station

There is no ground-based magnetic station or observatory that guarantees the quality of information received and transmitted to it. Data gaps, outliers, and anomalies are a common problem affecting virtually any ground-based magnetometer network, creating additional obstacles to efficient processing and analysis of experimental data. It is possible to monitor the reliability and improve the quality of the hardware and soft- ware modules included in magnetic stations by develop- ing their virtual models or so-called digital twins. In this paper, using a network of high-latitude IMAGE magnetometers as an example, we consider one of the possible approaches to creating such models. It has been substantiated that the use of digital twins of magnetic stations can minimize a number of problems and limitations associated with the presence of emissions and missing values in time series of geomagnetic data, and also provides the possibility of retrospective forecasting of geomagnetic field parameters with a mean square error (MSE) in the auroral zone up to 11.5 nT. Integration of digital twins into the processes of collecting and registering geomagnetic data makes the automatic identification and replacement of missing and abnormal values possible, thus increasing, due to the redundancy effect, the fault tolerance of the magnetic station as a data source object. By the example of the digital twin of the station “Kilpisjärvi” (Finland), it is shown that the proposed approach implements recovery of 99.55 % of annual information, while 86.73 % with M not exceeding 12 nT.

scholarly journals Development and application of problem-oriented digital twins for magnetic observatories and variation stations

2021 ◽  
pp. 60-71
Author(s):  
Andrei Vorobev ◽  
Vyacheslav Pilipenko ◽  
Gulnara Vorobeva ◽  
Olga Khristodulo
Keyword(s):  
Time Series ◽  
Geomagnetic Field ◽  
Missing Values ◽  
Information Environment ◽  
Small Scale ◽  
Geomagnetic Variation ◽  
Digital Twin ◽  
Digital Twins ◽  
Geomagnetic Data ◽  
Magnetic Station

Introduction: Magnetic stations are one of the main tools for observing the geomagnetic field. However, gaps and anomalies in time series of geomagnetic data, which often exceed 30% of the number of recorded values, negatively affect the effectiveness of the implemented approach and complicate the application of mathematical tools which require that the information signal is continuous. Besides, the missing values ​​add extra uncertainty in computer simulation of dynamic spatial distribution of geomagnetic variations and related parameters. Purpose: To develop a methodology for improving the efficiency of technical means for observing the geomagnetic field. Method: Creation of problem-oriented digital twins of magnetic stations, and their integration into the collection and preprocessing of geomagnetic data, in order to simulate the functioning of their physical prototypes with a certain accuracy. Results: Using Kilpisjärvi magnetic station (Finland) as an example, it is shown that the use of digital twins, whose information environment is made up of geomagnetic data from adjacent stations, can provide the opportunity for reconstruction (retrospective forecast) of geomagnetic variation parameters with a mean square error in the auroral zone of up to 11.5 nT. The integration of problem-oriented digital twins of magnetic stations into the processes of collecting and registering geomagnetic data can provide automatic identification and replacement of missing and abnormal values, increasing, due to the redundancy effect, the fault tolerance of the magnetic station as a data source object. For example, the digital twin of Kilpisjärvi station recovers 99.55% of annual information, and 86.73% of it has an error not exceeding 12 nT. Discussion: Due to the spatial anisotropy of geomagnetic field parameters, the error at the digital twin output will be different in each specific case, depending on the geographic location of the magnetic station, as well as on the number of the surrounding magnetic stations and the distance to them. However, this problem can be minimized by integrating geomagnetic data from satellites into the information environment of the digital twin. Practical relevance: The proposed methodology provides the opportunity for automated diagnostics of time series of geomagnetic data for outliers and anomalies, as well as restoration of missing values and identification of small-scale disturbances.

scholarly journals Big Data on Vessel Traffic

2019 ◽  
Vol 2019 (275) ◽  
Author(s):  
Serkan Arslanalp ◽  
Marco Marini ◽  
Patrizia Tumbarello
Keyword(s):  
Big Data ◽  
Real Time ◽  
Automatic Identification ◽  
Identification System ◽  
Traffic Data ◽  
Data Source ◽  
Statistical Agencies ◽  
New Statistics ◽  
Existing Data

Vessel traffic data based on the Automatic Identification System (AIS) is a big data source for nowcasting trade activity in real time. Using Malta as a benchmark, we develop indicators of trade and maritime activity based on AIS-based port calls. We test the quality of these indicators by comparing them with official statistics on trade and maritime statistics. If the challenges associated with port call data are overcome through appropriate filtering techniques, we show that these emerging “big data” on vessel traffic could allow statistical agencies to complement existing data sources on trade and introduce new statistics that are more timely (real time), offering an innovative way to measure trade activity. That, in turn, could facilitate faster detection of turning points in economic activity. The approach could be extended to create a real-time worldwide indicator of global trade activity.

scholarly journals Comprehensive survey among statistical members of medical ethics committees in Germany on their personal impression of completeness and correctness of biostatistical aspects of submitted study protocols

BMJ Open ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. e032864
Author(s):  
Geraldine Rauch ◽  
Lorena Hafermann ◽  
Ulrich Mansmann ◽  
Iris Pigeot
Keyword(s):  
Medical Ethics ◽  
Missing Values ◽  
Sample Size Calculation ◽  
Ethics Committees ◽  
Secondary Outcome ◽  
Study Protocols ◽  
Individual Assessment ◽  
Statistical Problems ◽  
Multiple Comparison Procedures

ObjectivesTo assess biostatistical quality of study protocols submitted to German medical ethics committees according to personal appraisal of their statistical members.DesignWe conducted a web-based survey among biostatisticians who have been active as members in German medical ethics committees during the past 3 years.SettingThe study population was identified by a comprehensive web search on websites of German medical ethics committees.ParticipantsThe final list comprised 86 eligible persons. In total, 57 (66%) completed the survey.QuestionnaireThe first item checked whether the inclusion criterion was met. The last item assessed satisfaction with the survey. Four items aimed to characterise the medical ethics committee in terms of type and location, one item asked for the urgency of biostatistical training addressed to the medical investigators. The main 2×12 items reported an individual assessment of the quality of biostatistical aspects in the submitted study protocols, while distinguishing studies according to the German Medicines Act (AMG)/German Act on Medical Devices (MPG) and studies non-regulated by these laws.Primary and secondary outcome measuresThe individual assessment of the quality of biostatistical aspects corresponds to the primary objective. Thus, participants were asked to complete the sentence ‘In x% of the submitted study protocols, the following problem occurs’, where 12 different statistical problems were formulated. All other items assess secondary endpoints.ResultsFor all biostatistical aspects, 45 of 49 (91.8%) participants judged the quality of AMG/MPG study protocols much better than that of ‘non-regulated’ studies. The latter are in median affected 20%–60% more often by statistical problems. The highest need for training was reported for sample size calculation, missing values and multiple comparison procedures.ConclusionsBiostatisticians being active in German medical ethics committees classify the biostatistical quality of study protocols as low for ‘non-regulated’ studies, whereas quality is much better for AMG/MPG studies.

The impact of the social network, stigma and empowerment on the quality of life in patients with schizophrenia

2011 ◽  
Vol 26 (1) ◽  
pp. 28-33 ◽  
Author(s):  
I. Sibitz ◽  
M. Amering ◽  
A. Unger ◽  
M.E. Seyringer ◽  
A. Bachmann ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Social Network ◽  
Structural Equation ◽  
Internalized Stigma ◽  
Stigma Reduction ◽  
Equation Modelling ◽  
The Social ◽  
Recovery Approach ◽  
The Impact

Abstract:Objective:The quality of life (QOL) of patients with schizophrenia has been found to be positively correlated with the social network and empowerment, and negatively correlated with stigma and depression. However, little is known about the way these variables impact on the QOL. The study aims to test the hypothesis that the social network, stigma and empowerment directly and indirectly by contributing to depression influence the QOL in patients with schizophrenia and schizoaffective disorders.Method:Data were collected on demographic and clinical variables, internalized stigma, perceived devaluation and discrimination, empowerment, control convictions, depression and QOL. Structural equation modelling (SEM) was applied to examine the impact of the above-mentioned constructs on QOL.Results:The influences of the social network, stigma, empowerment and depression on QOL were supported by the SEM. A poor social network contributed to a lack of empowerment and stigma, which resulted in depression and, in turn, in poor QOL. Interestingly, however, the social network and stigma did not show a direct effect on QOL.Conclusions:Following a recovery approach in mental health services by focusing on the improvement of the social network, stigma reduction and especially on the development of personal strength has the potential to reduce depression in patients with psychosis and improving their QOL.

Lessons Learned from National Food Fortification Projects: Experiences from Morocco, Uzbekistan, and Vietnam

2012 ◽  
Vol 33 (4_suppl3) ◽  
pp. S281-S292 ◽  
Author(s):  
James P. Wirth ◽  
Arnaud Laillou ◽  
Fabian Rohner ◽  
Christine A. Northrop-Clewes ◽  
Barbara Macdonald ◽  
...  
Keyword(s):  
National Policy ◽  
Lessons Learned ◽  
Consumption Patterns ◽  
Primary Data ◽  
Micronutrient Deficiencies ◽  
Global Alliance ◽  
Market Structures ◽  
History Of ◽  
Data Source

Background Fortification of staple foods has been repeatedly recommended as an effective approach to reduce micronutrient deficiencies. With the increased number of fortification projects globally, there is a need to share practical lessons learned relating to their implementation and responses to project-related and external challenges. Objective To document the achievements, challenges, lessons learned, and management responses associated with national fortification projects in Morocco, Uzbekistan, and Vietnam. Methods Independent end-of-project evaluations conducted for each project served as the primary data source and contain the history of, and project activities undertaken for, each fortification project. Other sources, including national policy documents, project reports from the Global Alliance for Improved Nutrition (GAIN) and other stakeholders, industry assessments, and peer-reviewed articles, were used to document the current responses to challenges and future project plans. Results All projects had key achievements related to the development of fortification standards and the procurement of equipment for participating industry partners. Mandatory fortification of wheat flour was a key success in Morocco and Uzbekistan. Ensuring the quality of fortified foods was a common challenge experienced across the projects, as were shifts in consumption patterns and market structures. Adjustments were made to the projects' design to address the challenges faced. Conclusions National fortification projects are dynamic and must be continually modified in response to specific performance issues and broader shifts in market structure and consumption patterns.

scholarly journals Promoting Diet and Physical Activity in Nurses

2016 ◽  
Vol 31 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Luciana Torquati ◽  
Toby Pavey ◽  
Tracy Kolbe-Alexander ◽  
Michael Leveritt
Keyword(s):  
Physical Activity ◽  
English Language ◽  
Data Extraction ◽  
Student Nurses ◽  
Inclusion Criteria ◽  
Exclusion Criteria ◽  
Data Synthesis ◽  
Diet And Physical Activity ◽  
Data Source

Objective. To systematically review the effectiveness of intervention studies promoting diet and physical activity (PA) in nurses. Data Source. English language manuscripts published between 1970 and 2014 in PubMed, Scopus, CINAHL, and EMBASE, as well as those accessed with the PICO tool, were reviewed. Study Inclusion and Exclusion Criteria. Inclusion criteria comprised (1) nurses/student nurses working in a health care setting and (2) interventions where PA and/or diet behaviors were the primary outcome. Exclusion criteria were (1) non–peer-reviewed articles or conference abstracts and (2) interventions focused on treatment of chronic conditions or lifestyle factors other than PA or diet in nurses. Data Extraction. Seventy-one full texts were retrieved and assessed for inclusion by two reviewers. Data were extracted by one reviewer and checked for accuracy by a second reviewer. Data Synthesis. Extracted data were synthesized in a tabular format and narrative summary. Results. Nine (n = 737 nurses) studies met the inclusion criteria. Quality of the studies was low to moderate. Four studies reported an increase in self-reported PA through structured exercise and goal setting. Dietary outcomes were generally positive, but were only measured in three studies with some limitations in the assessment methods. Two studies reported improved body composition without significant changes in diet or PA. Conclusions. Outcomes of interventions to change nurses’ PA and diet behavior are promising, but inconsistent. Additional and higher quality interventions that include objective and validated outcome measures and appropriate process evaluation are required.

Technical services and user service improvement

2006 ◽  
Vol 27 (6/7) ◽  
pp. 505-514 ◽  
Author(s):  
Jie Huang ◽  
Katherine Wong
Keyword(s):  
Point Of View ◽  
Service Improvement ◽  
Key Factors ◽  
Content Type ◽  
University Of Oklahoma ◽  
Online Catalog ◽  
Efficient Processing ◽  
The University ◽  
Technical Services

PurposeFrom the cataloging librarians' point of view, this paper aims to present how technical services, especially the cataloging department, can play important roles in the improvement of user services.Design/methodology/approachThe paper examines the practices of the University of Oklahoma Libraries.FindingsThe paper identifies several aspects in which technical services can enhance the quality of user services, especially in the cataloging department. A library's online catalog becomes the first point of access to the library's information resources. Its quality can be improved and enriched in many ways to raise users’ satisfaction. Aside from the improvement in technical aspects, efforts should also be made to promote collaboration between technical and public services so as to ensure efficient processing of materials and to meet the needs of library users.Originality/valueThe value of the paper is in showing that the quality of an online catalog and the cooperation between public and technical services are two of the key factors in achieving high quality of user services.

E. Analisis Kualitas Sumber Daya ManusiaTerhadap Ketepatan Waktu Laporan SPJ Pengeluaran (Studi Kasus pada Dinas Lingkungan Hidup Provinsi Jawa Timur)

2021 ◽  
Vol 6 (1) ◽  
pp. 53
Author(s):  
Mochamad Khoirul Machfuda ◽  
Hj. Nanik Kustiningsih MM.
Keyword(s):  
Human Resources ◽  
Primary Data ◽  
Valid Evidence ◽  
Data Source ◽  
Work Units ◽  
Operational Activities ◽  
Conducting Research ◽  
Internal Accounting ◽  
Regional Work

Abstrak Belanja Satuan Kerja Perangkat Daerah (SKPD) tentunya sangat berkaitan dengan setiap lembaga pemerintah. Belanja SKPD merupakan pengeluaran dana yang digunakan untuk membiayai kegiatan operasional kantor, dimana setiap pengeluaran atau belanja harus dilengkapi bukti yang lengkap dan sah yang akan digunakan untuk proses penyusunan SPJ Pengeluaran. Oleh karena itu, peneliti tertarik melakukan penelitian yang bertujuan untuk menganalisis pengaruh kualitas sumber daya manusia, pemanfaatan teknologi informasi, dan pengendalian akuntansi internal terhadap ketepatan waktu pelaporan SPJ Pengeluaran di Dinas Lingkungan Hidup Provinsi Jawa Timur. Penelitian ini menggunakan metode analisis kualitatif dan kuantitatif. Sumber data yang digunakan adalah data primer yang diperoleh langsung dari Dinas Lingkungan Hidup Provinsi Jawa Timur. Hasil penelitian menunjukkan bahwa Dinas Lingkungan Hidup Provinsi Jawa Timur  menunjukkan bahwa kualitas sumber daya manusia, memberikan pengaruh yang positif dan signifikan terhadap ketepatan waktu laporan SPJ Pengeluaran  Dinas   Kata Kunci : kualitas sumber daya manusia, ketepatan waktu, laporan pertanggungjawaban Abstract Expenditures for regional work units (SKPD) are of course closely related to every government agency. SKPD expenditure is an expenditure of funds used to finance office operational activities, where each expenditure or expenditure must be accompanied by complete and valid evidence that will be used for the process of preparing the SPJ for Expenditure. Therefore, researchers are interested in conducting research that aims to analyze the influence of the quality of human resources, the use of information technology, and internal accounting controls on the timeliness of reporting SPJ Expenditures at the Environmental Office of East Java Province. This research uses qualitative and quantitative analysis methods. The data source used is primary data obtained directly from the Environmental Office of East Java Province. The results showed that the Department of Environment of the Province of East Java showed that the quality of human resources had a positive and significant effect on the timeliness of the SPJ report on official expenditures.   Keyword : the quality of human resources,timeliness, accountability

Assessing the quality of budget risk management of the subjects of the Russian Federation

2021 ◽  
Vol 27 (11) ◽  
pp. 2521-2547
Author(s):  
Alena Yu. SUKHOVA
Keyword(s):  
Risk Management ◽  
Russian Federation ◽  
Regional Finance ◽  
Finance Management ◽  
Regional Budget ◽  
Data Source ◽  
The Russian Federation ◽  
Ministry Of Finance ◽  
Statistical Criteria

Subject. The article explores indicators for budget risk management in the subjects of the Russian Federation. Objectives. The aim is to develop a system of indicators to assess the quality of budget risk management, to create a methodology for quality management assessment and test it on the case of 85 subjects, to build a rating for the quality of budget risk management in 2020. Methods. The study rests on creating a model for assessing the quality of budget risk management on the basis of 18 mathematical and statistical criteria and their testing on budget data from 85 federal subjects for 2020, and the deductive approach. Results. I formulated and justified indicators of analysis that demonstrate the level of readiness of the budget of Russian subjects to accept budget risks. The proposed indicators are logically structured into groups and detailed by data source for evaluation. The system of indicators is incorporated into the existing methodology created by the Ministry of Finance of the Russian Federation. The results of the analysis are presented as a rating of subjects of the Russian Federation based on the aggregate assessment of the quality of budget risk management. Conclusions. The offered methodology may serve as a supplement to the methodology for assessing the quality of regional finance management created by the Ministry of Finance of the Russian Federation. It may also help evaluate decisions on proactive risk management and mitigation of consequences of risk events in regional budget utilization.

Sign in / Sign up

Export Citation Format

Share Document