scholarly journals POSSIBILITIES OF MODERN ELECTRONIC GEODESIC EQUIPMENT AND TRENDS OF ITS DEVELOPMENT

2021 ◽  
Vol 4 (164) ◽  
pp. 122-127
Author(s):  
M. Kukhar ◽  
O. Dobrokhodova ◽  
A. Evdokіmov ◽  
M. Myronenko
Keyword(s):  
Electronic Devices ◽  
Sufficient Accuracy ◽  
Information Collection ◽  
Moment Characteristic ◽  
Amount Of Information ◽  
Gnss Receivers ◽  
Satellite Signal ◽  
The Moment ◽  
Technical Features ◽  
The Impact

In modern conditions, geodetic equipment is moving to a new level of development. Previously, the devices developed in the direction of developing accuracy. Now geodetic instruments provide sufficient accuracy to perform work in the field of geodesy. In this regard, there is a need to optimize the workflow: increase the efficiency of information collection, the amount of information collected per unit time, increase the efficiency of standard tasks in geodesy. This need characterizes a new stage in the development of geodetic instruments. The study uses methods: observation - to get acquainted with modern geodetic equipment, abstraction – to determine the conceptual technical features of modern electronic geodetic instruments (used specific examples), analysis – to identify trends in modern electronic surveying instruments, sampling – to select instruments to be characterize their categories. The analysis of the capabilities of modern electronic devices on the example of the total station Leica Nova MS60 and GNSS receiver Leica GS18 I was carried out. It was found that at the moment characteristic of the development of modern geodetic equipment is the optimization of the workflow using these devices through the development of hardware and software for these devices. For example, in total stations it is an expansion of opportunities, automation of processes of geodetic works. In GNSS receivers – this is an increase in the amount of information collected, reducing the impact of the shortcomings of the satellite signal. Much of this technical development has been provided by modern software, such as Captivate at Leica. Trends in the development of other and similar modern geodetic equipment are also going in this direction. This statement is characterized by the limits of development of the technical part of the geodetic equipment and significant opportunities for development in the software part.

The Impact of Bridge Alerts on Navigating Officers

2019 ◽  
Vol 73 (2) ◽  
pp. 421-432 ◽  
Author(s):  
Lovro Maglić ◽  
Damir Zec
Keyword(s):  
Decision Making ◽  
Data Collection ◽  
Research Methods ◽  
Questionnaire Survey ◽  
Situational Awareness ◽  
Amount Of Information ◽  
Processing Times ◽  
The Moment ◽  
The Impact

New navigation-related technologies and complex ships' systems are associated with a considerable amount of information and alerts on navigational bridges. Each alert triggers a process conducted by the Officer Of the Watch (OOW), which includes data collection and interpretation, decision making, as well as appropriate actions. In the case of too many alerts or poorly managed alerts, the workload of the OOW may significantly increase, and situational awareness may be compromised, increasing the risk of errors. The main goal of this research is to analyse OOW actions triggered by the alerts. The research methods included an experiment on a bridge simulator with experienced officers, a questionnaire survey and a series of interviews. The main outcomes encompass the frequency of the alerts and the number and the processing times of single actions conducted upon an alert. The results indicate that, on average, during one watch, an OOW spends 22·4 minutes conducting 64 actions triggered by 16 alerts. However, officers consider 45% of the alerts as over-prioritised and distracting at the moment of their notification.

scholarly journals Modelling the impact of delaying vaccination against SARS-CoV-2 assuming unlimited vaccine supply

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Marcos Amaku ◽  
Dimas Tadeu Covas ◽  
Francisco Antonio Bezerra Coutinho ◽  
Raymundo Soares Azevedo ◽  
Eduardo Massad
Keyword(s):  
Mathematical Model ◽  
Vaccination Campaign ◽  
Vaccination Rate ◽  
Sao Paulo ◽  
The State ◽  
São Paulo ◽  
Health Authorities ◽  
The World ◽  
The Moment ◽  
The Impact

Abstract Background At the moment we have more than 177 million cases and 3.8 million deaths (as of June 2021) around the world and vaccination represents the only hope to control the pandemic. Imperfections in planning vaccine acquisition and difficulties in implementing distribution among the population, however, have hampered the control of the virus so far. Methods We propose a new mathematical model to estimate the impact of vaccination delay against the 2019 coronavirus disease (COVID-19) on the number of cases and deaths due to the disease in Brazil. We apply the model to Brazil as a whole and to the State of Sao Paulo, the most affected by COVID-19 in Brazil. We simulated the model for the populations of the State of Sao Paulo and Brazil as a whole, varying the scenarios related to vaccine efficacy and compliance from the populations. Results The model projects that, in the absence of vaccination, almost 170 thousand deaths and more than 350 thousand deaths will occur by the end of 2021 for Sao Paulo and Brazil, respectively. If in contrast, Sao Paulo and Brazil had enough vaccine supply and so started a vaccination campaign in January with the maximum vaccination rate, compliance and efficacy, they could have averted more than 112 thousand deaths and 127 thousand deaths, respectively. In addition, for each month of delay the number of deaths increases monotonically in a logarithmic fashion, for both the State of Sao Paulo and Brazil as a whole. Conclusions Our model shows that the current delay in the vaccination schedules that is observed in many countries has serious consequences in terms of mortality by the disease and should serve as an alert to health authorities to speed the process up such that the highest number of people to be immunized is reached in the shortest period of time.

La structure de classes québécoise au 19e siècle et le problème de l'articulation des modes de production

1981 ◽  
Vol 14 (3) ◽  
pp. 487-518
Author(s):  
Gérald Bernier
Keyword(s):  
Census Data ◽  
New France ◽  
Class Structure ◽  
Capitalist Development ◽  
Single Class ◽  
The Moment ◽  
Empirical Demonstration ◽  
Work Done ◽  
The Impact

The study of social classes in the nineteenth century requires the development of conceptual tools able to explain the impact of the Conquest on the pre-existant social structures in determining transformations of the class structure during the subsequent decades.This article examines the work done on this question by Marxist writers. The author criticizes certain conclusions which have been drawn and which suggest deficiencies at a theoretical level. The objections relate to the marked tendency of these conclusions to perceive the structural effects of the Conquest in terms of the formation of a double-class structure characterized by “ethnic origins.” Specifically, the author challenges the notion of the division itself, as well as the criterion on which the division is based.The author proposes that an analysis centred upon the concepts relating to a problem of the transition and linkage of different modes of production permits a more satisfying interpretation, if accompanied by a certain number of considerations of the “upside” and “downside” of the Conquest. To this end, the argument is based on a characterization of New France in terms of the domination of the relations of production of the feudal type and on an analysis of metropolitan centres with intent to evaluate their level of capitalist development at the moment of their respective colonial penetration in Canada. The results of this approach permit one to posit the existence of a single-class structure, characterized principally by the existence of elements connecting diverse modes and forms of production, whose origin reflects the unequal state of economic development in the two metropolitan centres.The empirical demonstration rests on the census data of 1851–1852 and on the complementary information drawn from the works of historians.

scholarly journals Impact of the COVID-19 Pandemic on the Patient’s Decision about Bariatric Surgery: Results of a National Survey

Medicina ◽  
2021 ◽  
Vol 57 (8) ◽  
pp. 756
Author(s):  
Maciej Walędziak ◽  
Anna Różańska-Walędziak ◽  
Paweł Bartnik ◽  
Joanna Kacperczyk-Bartnik ◽  
Andrzej Kwiatkowski ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Online Survey ◽  
Negative Impact ◽  
Weight Loss Surgery ◽  
General Information ◽  
Open Questions ◽  
Increased Risk ◽  
Bariatric Patients ◽  
The Moment ◽  
The Impact

Background: the COVID-19 pandemic and the implemented restrictions have changed the functioning of healthcare systems worldwide. The purpose of the study was to evaluate the impact of the present epidemiological situation on patients’ decisions about undergoing weight loss surgery. Methods: data were collected from 906 bariatric patients by the means of a national online survey, the majority of whom were women (87.9%). The survey started on 9 April 2020 and was open until 28 April 2020. The questionnaire included multiple choice and open questions, divided into three chapters: general information about the patient, life during the COVID-19 pandemic, and bariatric care during the COVID-19 pandemic. Results: despite the pandemic and the associated risk of COVID-19 infection, 443 responders (48.9%) would have decided to undergo bariatric surgery. Awareness of the negative impact of obesity on the course of COVID-19 illness had only marginable impact on patients’ decision-making (76.6% vs. 75.3%; p < 0.80). Contact with COVID-19 prior to the survey had a negative impact on the willingness to undergo bariatric surgery (3.0% vs. 4.4%; p < 0.55). There was a positive correlation between the BMI and preference for bariatric surgery in the time of the pandemic (37.4 ± 9.0 vs. 34.9 ± 8.7; p < 0.001). Conclusions: the level of awareness about the advantages of operative treatment of obesity is high among bariatric patients. The majority of patients awaiting bariatric surgery at the moment of the survey were positive about undergoing bariatric surgery despite the increased risk of a serious course of COVID-19 infection. Therefore, a large proportion of patients was determined to have bariatric treatment even during the pandemic, being aware of the increased risk of worse pace of COVID-19 disease in case of obesity and related diseases.

Road barriers: modern solutions for improving traffic safety

2021 ◽  
pp. 43-48
Author(s):  
Keyword(s):  
Traffic Safety ◽  
Traffic Accident ◽  
Preventive Measures ◽  
Mechanical Damage ◽  
Road Accidents ◽  
Road Users ◽  
Urgent Task ◽  
The Moment ◽  
Energy Absorbing ◽  
The Impact

Improving the system of preventive measures aimed at reducing the severity of the consequences of road accidents is an urgent task. Road deaths are constantly increasing and there is a need for a comprehensive approach to creating safe road conditions. The purpose of this study is to analyze the promising designs of road barriers designed to prevent uncontrolled exit of vehicles from the roadway of the highway and to develop the design of energy-absorbing fencing. Barrier barriers must not only be safe for road users, but must also ensure their safety, as well as preserve the elements after hitting the fence. Analytical studies have shown that in order to reduce mechanical damage to vehicles and reduce the severity of injuries to the driver and passengers, it is necessary to develop a road fence design that allows you to extinguish the impact energy at the moment of contact between the car and the fence. Keywords: fencing, barrier, safety, traffic accident

Real-time and near real-time ZTD from a local network of low-cost dual-frequency GNSS receivers.

2021 ◽  
Author(s):  
Tomasz Hadas ◽  
Grzegorz Marut ◽  
Jan Kapłon ◽  
Witold Rohm
Keyword(s):  
Water Vapor ◽  
Real Time ◽  
Low Cost ◽  
Weather Prediction ◽  
Local Network ◽  
System Component ◽  
Dual Frequency ◽  
Lower Accuracy ◽  
Gnss Receivers ◽  
The Impact

&lt;p&gt;The dynamics of water vapor distribution in the troposphere, measured with Global Navigation Satellite Systems (GNSS), is a subject of weather research and climate studies. With GNSS, remote sensing of the troposphere in Europe is performed continuously and operationally under the E-GVAP (http://egvap.dmi.dk/) program with more than 2000 permanent stations. These data are one of the assimilation system component of mesoscale weather prediction models (10 km scale) for many nations across Europe. However, advancing precise local forecasts for severe weather requires high resolution models and observing system.&amp;#160; &amp;#160;Further densification of the tracking network, e.g. in urban or mountain areas, will be costly when considering geodetic-grade equipment. However, the rapid development of GNSS-based applications results in a dynamic release of mass-market GNSS receivers. It has been demonstrated that post-processing of GPS-data from a dual-frequency low-cost receiver allows retrieving ZTD with high accuracy. Although low-cost receivers are a promising solution to the problem of densifying GNSS networks for water vapor monitoring, there are still some technological limitations and they require further development and calibration.&lt;/p&gt;&lt;p&gt;We have developed a low-cost GNSS station, dedicated to real-time GNSS meteorology, which provides GPS, GLONASS and Galileo dual-frequency observations either in RINEX v3.04 format or via RTCM v3.3 stream, with either Ethernet or GSM data transmission. The first two units are deployed in a close vicinity of permanent station WROC, which belongs to the International GNSS Service (IGS) network. Therefore, we compare results from real-time and near real-time processing of GNSS observations from a low-cost unit with IGS Final products. We also investigate the impact of replacing a standard patch antenna with an inexpensive survey-grade antenna. Finally, we deploy a local network of low-cost receivers in and around the city of Wroclaw, Poland, in order to analyze the dynamics of troposphere delay at a very high spatial resolution.&lt;/p&gt;&lt;p&gt;As a measure of accuracy, we use the standard deviation of ZTD differences between estimated ZTD and IGS Final product. For the near real-time mode, that accuracy is 5&amp;#160;mm and 6 mm, for single- (L1) and dual-frequency (L1/L5,E5b) solution, respectively. Lower accuracy of the dual-frequency relative solution we justify by the missing antenna phase center correction model for L5 and E5b frequencies. With the real-time Precise Point Positioning technique, we estimate ZTD with the accuracy of 7.5 &amp;#8211; 8.6 mm. After antenna replacement, the accuracy is improved almost by a factor of 2 (to 4.1 mm), which is close to the 3.1&amp;#160;mm accuracy which we obtain in real-time using data from the WROC station.&lt;/p&gt;

Social capital in the theory and research of LIS professionals in the light of the literature on the subject. Review of current knowledge

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Maja Dorota Wojciechowska
Keyword(s):  
Social Capital ◽  
Current Knowledge ◽  
Future Research ◽  
Content Type ◽  
Individual Social Capital ◽  
Rural Libraries ◽  
The Subject ◽  
The Moment ◽  
The Impact

Purpose The purpose of the paper is to present the latest scholarly trends in the field of social capital in libraries, to review research concepts published by LIS professionals and to suggest further research possibilities in this area. Design/methodology/approach This paper presents a review and critical analysis of literature associated with research on social capital in libraries to highlight its importance for the development of LIS and its impact on the functioning of environments linked with various types of libraries. The goal of literature analysis was to determine the current condition of research on social capital in libraries. The main trends were identified and the need for further qualitative analyses, which are missing at the moment, was confirmed. Findings It was determined that, so far, LIS professionals have focussed mainly on the role of municipal libraries in developing social capital, the problem of building trust, especially in immigrant circles and the impact of libraries on promoting a civil society. Academic libraries, rural libraries, organisational capital in libraries and individual social capital of librarians were a much less frequent subject of research. The role of libraries in developing social capital in educational (primary and secondary education) and professional (non-university professionals) circles is practically non-existent in research, and it will require in-depth studies and analyses in the coming years. Originality/value This paper constitutes a synthetic review of the latest research concepts concerning social capital in libraries. It identifies the most important research trends and areas that so far have not been explored and suggests research methods to help LIS professionals design future research in this area more effectively.

scholarly journals Sweet Rewards: An Exercise to Demonstrate Process Theories of Motivation

2018 ◽  
Vol 4 (1) ◽  
pp. 49-62 ◽  
Author(s):  
Robert L. Holbrook ◽  
David Chappell
Keyword(s):  
Organizational Behavior ◽  
Teaching And Learning ◽  
Equity Theory ◽  
Expectancy Theory ◽  
Fundamental Component ◽  
Process Theories ◽  
The Moment ◽  
The Impact ◽  
Extensive List ◽  
Implementation Steps

Motivation is a fundamental component in management and organizational behavior courses. At the same time, it can be a complicated topic for teaching and learning due to the number of popular models and theories. The activity described here is a simple and fast way to illustrate the components of two of the most important and practical motivation theories—Equity Theory and Expectancy Theory. The impact of the activity will be realized the moment a disproportional reward is made. We outline implementation steps and provide an extensive list of questions to check students’ understanding of motivation theories. We also provide additional resources (i.e., media suggestions, discussion slides) to enhance classroom presentations. This exercise is designed primarily for management and organizational behavior courses. It can be used effectively with a variety of audiences (i.e., undergraduate, graduate, executive).

scholarly journals Analytical and Experimental Analysis of a Free Link in Contact with a Granular Medium

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Dan B. Marghitu ◽  
Seung Lee
Keyword(s):  
Granular Medium ◽  
Stopping Time ◽  
The Body ◽  
Resistance Force ◽  
Time Interval ◽  
The Moment ◽  
Static Resistance ◽  
The Impact ◽  
Resistance Forces ◽  
Empirical Approaches

In this study, the experimental and the simulation results for a planar free link impacting a granular medium are analyzed. The resistance force of the granular medium on the body from the moment of the impact until the body stops is very important. Horizontal and vertical static resistance forces developed by theoretical and empirical approaches are considered. The penetrating depth of the impacting end of the free link increases with the increase of the initial impacting velocity. We define the stopping time as the time interval from the moment of impact until the vertical velocity of the link end is zero. The stopping time of the end decreases as the initial velocity increases. The faster the end of the link impacts the surface of the granular medium, the sooner it will come to a stop. This phenomenon involves how rapidly a free link strikes the granular medium and how it slows down upon contact.

scholarly journals Ernst May and the Campaign to Resettle the Countryside: Rural Housing in Silesia, 1919-1925

2002 ◽  
Vol 61 (2) ◽  
pp. 188-211 ◽  
Author(s):  
Susan R. Henderson
Keyword(s):  
Social Order ◽  
Mining Industry ◽  
Rural Housing ◽  
Housing Program ◽  
Third Way ◽  
Modern Approach ◽  
Cultural Traditions ◽  
The Veil ◽  
The Moment ◽  
The Impact

In 1919 Ernst May became the head of rural housing for the province of Silesia in eastern Germany. Silesian agriculture had long suffered from rural flight. The situation worsened in 1922 when the partition brokered by the Allies brought chaos in the mining industry and a flood of refugees. As head of the provincial stabilization effort called interior colonization, May was in charge of settlement programs to aid three constituencies of special concern: the farmworkers, the miners, and the refugees. Between 1919 and 1923, Germany's national rural housing effort employed a contradictory strategy of modernization set within corporative ideology, a "third way" that trumpeted a quasi-feudal social order as a path to political accord. May's Silesian work chronicles the impact of Modernism and corporatism on early Weimar housing: his settlements for farmworkers and miners celebrated their unique cultural traditions, while he experimented in rationalization techniques to increase housing production and reduce costs. With corporatism's decline after Germany's return to economic stability in 1924, modernization was increasingly accepted as an unalloyed virtue, and the veil of corporatism lifted. In 1924, challenged by the circumstances of the refugee housing program just at the moment the corporative compromise came to an end, May engaged in a series of experiments in polychromy, prefabricated construction, mass production, and standardization that reflected a more purely modern approach to the housing problem.

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