Search results for " drive"
showing 10 items of 286 documents
Kravas auto vadītāju darba un atpūtas laika ievērošanas saistība ar uzvedību uz ceļa
2019
Pētījuma mērķis bija salīdzināt kravas auto vadītāju uzvedību uz ceļa saistībā ar darba un atpūtas laika ievērošanu. Pētījuma izlases sastāvēja no 111 vīriešiem, kuri strādā par kravas auto šoferiem un izmanto kravas automašīnu darba vajadzībām, vecumā no 24 līdz 66 gadiem, vidējais vecums 45,43 gadi. Pētījuma dalībniekiem tika piedāvāts aizpildīt autovadītāju uzvedības aptauju (Drivers Behaviour Questionnaire, DBQ; Reason, Manstead, Stradling, Baxter, & Campbell, 1990), adaptāciju latviešu valodā veikuši V. Reņģe un I. Austers, 2007. Autovadītāji aizpildīja arī darba autora veidoto kravas auto vadītāju aptauju, kas iekļauj apgalvojumus, kas saistīti ar darba un atpūtas laiku. Pētījuma rezu…
Wykorzystanie elektronicznych giełd transportowych w działalności e-biznesowej przedsiębiorstw z branży TSL zorientowanych projektowo
2016
The article presents the essence and importance of electronic freight exchange in the functioning of enterprises in the transport-forwarding-logistics sector. The authors present the basic issues related to the e-government, the essence of e-business and ecommerce. Then characterizes the transition process in the transport-forwarding-logistics sector in the context of the functioning of the electronic market. The authors discuss the tools and resources to support electronic business processes in the form of electronic freight exchanges. They present the benefits and costs of the use of such tools in the transport-forwarding-logistics sector on the basis of studies conducted in selected ente…
The Population Genomics of Anopheles gambiae Species Complex: Progress and Prospects
2021
Anopheles gambiae sensu lato is a species complex containing principal malaria vectors such as An. gambiae sensu stricto, An. coluzzii, and An. arabiensis. Numerous studies have shown dynamic species hybridization among member of this complex makes them an ideal model for studying evolution and speciation as well as for applied vector biology. Applying a population genomics approach to the An. gambiae and An. coluzzii species group has led to a number of important and epidemiologically relevant insights including: (1) organization of genomic divergence into “islands of speciation”; (2) competing models of population origin of An. gambiae and An. Coluzzii; (3) description of asymmetric intro…
Optimization of Delayed-State Kalman-Filter-based Algorithm via Differential Evolution for Sensorless Control of Induction Motors
2010
This paper proposes the employment of the differential evolution (DE) to offline optimize the covariance matrices of a new reduced delayed-state Kalman-filter (DSKF)-based algorithm which estimates the stator-flux linkage components, in the stationary reference frame, to realize sensorless control of induction motors (IMs). The DSKF-based algorithm uses the derivatives of the stator-flux components as mathematical model and the stator-voltage equations as observation model so that only a vector of four variables has to be offline optimized. Numerical results, carried out using a low-speed training test, show that the proposed DE-based approach is very promising and clearly outperforms a cla…
Bearing fault detection based on time-frequency representations of vibration signals
2015
To prevent failures of a rolling bearing in the gearbox drive system, acceleration sensors are used to detect fault-related signals of the bearing. It is a big challenge to observe and identify signals caused by bearing defects in the time domain or the frequency spectrum by a conventional Fourier analysis. The time-frequency representation of the fault-related signals implemented by the windowed Fourier transform is studied in this work. It is shown that the fault characteristic frequencies can be clearly identified in the time-frequency spectrum if a fault occurs in the bearing of the gearbox at different speeds. Otherwise, the shaft frequency and its multiples are the main harmonics in t…
An efficient grid-based RF fingerprint positioning algorithm for user location estimation in heterogeneous small cell networks
2014
This paper proposes a novel technique to enhance the performance of grid-based Radio Frequency (RF) fingerprint position estimation framework. First enhancement is an introduction of two overlapping grids of training signatures. As the second enhancement, the location of the testing signature is estimated to be a weighted geometric center of a set of nearest grid units whereas in a traditional grid-based RF fingerprinting only the center point of the nearest grid unit is used for determining the user location. By using the weighting-based location estimation, the accuracy of the location estimation can be improved. The performance evaluation of the enhanced RF fingerprinting algorithm was c…
Combining Social Service and Healthcare as the First Country in the World : Exploring the Impacts on Information Systems
2018
The Finnish government has decided to implement a reform in the social and healthcare system by combining the two in the future. There are several drivers for this change that have been identified. Large number of information systems that are not interoperable, challenges in data management and isolated service offering are the most significant ones. In the government’s strategy for the future the digitalisation will provide tools to solve these challenges. In this paper the landscape is outlined and the architecture choices are discussed. The enterprise architecture is applied for the largest county comprising of over 1900 social service and healthcare related information systems. The targ…
Exploring the Critical Success Factors in Social and Health Care Information Systems Project Procurement
2020
A welfare reform involving the mixing of social and health services is being introduced by the Finnish government. Several factors have been identified for this shift, the most relevant of which is that many information systems are not interoperable and data-related problems have been identified. Management and isolated offers of service. Digitalizing to solve these issues is part of the government’s policy. This paper outlines the change landscape and explores the architectural options of the proposed digitalisation process and crucial success factors. The Undertaking The design is applied to the largest county, which consists of over 1,900 information systems related to social support and…
Human Resources – A Value Driven Perspective
2019
The information age has changed many of the “classical” business activities by altering the core values and management principles. Human resources management has also changed and has adapted to the new challenges of the 21st -century information age. The hunt for knowledge and for the determined business value is driven by more complex and far-reaching human resources activities. Companies must change their “classic” view on human resources to prevail and to be successful in the new complex and speed century. Human resources have changed its old working principles to fit the requirements of constant data, information, and knowledge “hunting” and morphed to a proactive and dynamic business v…
CORRELATION ANALYSIS FOR TOURISM HEDONIC AND UTILITARIAN MOTIVATORS IN THE DECISION MAKING PROCESSÂ
2013
For centuries, the marketing concept claims that organizations must forecast and satisfy consumer needs if their goals are to make profit and develop a connection with their customers. The marketing concept plays a vital role because consumers have a variety of choices and lately, they are better educated, with eagerness in spending and they are capable to shop around much more in order to purchase everything that satisfy their needs and expectations. In this line of ideas, this study examines correlations between consumer motivators to buy a tourism package.