Analiza systemów logistycznych przedsiębiorstw

Sadowski, Adam

doi:10.33141/po.2007.78.18

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…In the current state of the art, issues related to the location of devices in Internet of Things (IoT) networks are often discussed, because determining the exact location may be, among others, the basis for the correct interpretation of the transmitted user's information [22]. As already mentioned, the GPS system is characterized by significantly lower efficiency in the indoor environment and therefore other positioning methods are used [23,24]. Moreover, on the basis of the research described in the literature, the negative influence of NLoS propagation conditions on the accuracy in estimating the distance using the ToA method can be determined.…”

Section: Methods For Detection Of Localization Of Usersmentioning

confidence: 99%

User Orientation Detection in Relation to Antenna Geometry in Ultra-Wideband Wireless Body Area Networks Using Deep Learning

Urwan,

Cwalina

2024

Sensors

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In this paper, the issue of detecting a user’s position in relation to the antenna geometry in ultra-wideband (UWB) off-body wireless body area network (WBAN) communication using deep learning methods is presented. To measure the impulse response of the channel, a measurement stand consisting of EVB1000 devices and DW1000 radio modules was developed and indoor static measurement scenarios were performed. It was proven that for the binary classification of user orientation, neural networks achieved accuracy that was more than 9% higher than that for the well-known threshold method. In addition, the classification of user position angles relative to the reference node was analyzed. It was proven that, using the proposed deep learning approach and the channel impulse response, it was possible to estimate the angle of the user’s position in relation to the antenna geometry. Absolute user orientation angle errors of about 4–7° for convolutional neural networks and of about 14–15° for multilayer perceptrons were achieved in approximately 85% of the cases in both tested scenarios.

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Section: Methods For Detection Of Localization Of Usersmentioning

confidence: 99%

User Orientation Detection in Relation to Antenna Geometry in Ultra-Wideband Wireless Body Area Networks Using Deep Learning

Urwan,

Cwalina

2024

Sensors

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“…The concept of reliability is used in various industries and is thus considered from many perspectives. According to T. Nowakowski [24], reliability consists of properties such as readiness and credibility (Figure 1). time, as some people will not be interested in using urban public transport services regardless of the quality of the transport offer, e.g., because they prefer individual transport [23].…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…The concept of reliability is used in various industries and is thus considered from many perspectives. According to T. Nowakowski [24], reliability consists of properties such as readiness and credibility (Figure 1). J. C. Laprie [25] defines reliability as the ability of a system to deliver a specific service.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

The Problem of Reliability in Public Transport for the Metropolis GMZ Area-Pilots Studies

Gaschi-Uciecha

2023

Sustainability

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Ensuring the sustainable development of transportation whether it involves a country, a city or a metropolitan area is becoming a priority for modern Europe. Therefore, the development of sustainable transportation is crucial in cities. It should aim to increase the number of trips made by public transportation while minimizing social costs and negative environmental impacts. The intensive development of cities from industrial to service-based and the phenomenon of suburbanization require changes in public transport services. Often, however, carriers do not change existing lines and stops and schedules justifying this by passenger habits. This approach can cause a mismatch between the availability of public transportation services and the demand for these services. Therefore, planning and improving the public transportation system should be based on careful analysis. There are different approaches to this problem. The article uses the Customer Satisfaction Index (CSI) method to assess service quality, including reliability, where the main measurement tool was a survey questionnaire. A pilot studies has been conducted to present the opinion of residents of the Górnośląsko-Zagłębiowskiej Metropolis (GZM) on specific parameters of public transportation. The GZM is a large metropolitan area in the Silesian province, consisting of 41 municipalities. The metropolitan area is inhabited by more than 2.3 million people and covers an area of about 2550 square kilometers. The results of the pilot studies are a contribution to further research and may be useful to understand the essence of reliability in public transport.

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Analiza systemów logistycznych przedsiębiorstw

Abstract: Artykuł omawia kilka pojęć z zakresu systemów logistycznych przedsiębiorstw np. system, system logistyczny, analiza, synergia, koszty, metody optymalizacji.

Cited by 2 publications

References 2 publications

User Orientation Detection in Relation to Antenna Geometry in Ultra-Wideband Wireless Body Area Networks Using Deep Learning

User Orientation Detection in Relation to Antenna Geometry in Ultra-Wideband Wireless Body Area Networks Using Deep Learning

The Problem of Reliability in Public Transport for the Metropolis GMZ Area-Pilots Studies

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