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Journal Details
Format
Journal
eISSN
2083-4608
First Published
26 Feb 2008
Publication timeframe
4 times per year
Languages
English

Search

Volume 46 (2018): Issue 1 (June 2018)

Journal Details
Format
Journal
eISSN
2083-4608
First Published
26 Feb 2008
Publication timeframe
4 times per year
Languages
English

Search

16 Articles
Open Access

Crowd Behavioural Analysis at a Mass Gathering Event

Published Online: 19 Dec 2018
Page range: 5 - 20

Abstract

Abstract

Religious occasions, gathering at fairs and terminals, are the events of crowd gatherings. Such gatherings act as severe threats for crowds because of high density in less space, which ends up in adverse outcomes resulting in crowd stampedes. The movement of an individual person in a crowd is influenced by the physical factors. In the present study, characteristics like age, gender, group size, child holding, child carrying, people with luggage and without luggage are considered for crowd behaviour analysis. The average speed of the crowd movement was observed as 0.86 m/s. The statistical analysis concluded that there was a significant effect of age, gender, density and luggage on the crowd walking speed. Multi-linear regression (MLR) model was developed between crowd speed and significant factors observed from the statistical analysis. Location 1 data was used for the model development. This developed model was validated using Location 2 data. Gender has more significant effect on speed followed by luggage and age. This study helps in proper dispersal of crowd in a planned manner to that of diversified directional flow that exist during crowd gathering events.

Keywords

  • Age
  • Crowd
  • Gender
  • Group
  • Luggage
  • Speed
Open Access

System Safety Model Related to Climate-Weather Change Process Application to Port and Maritime Transport

Published Online: 19 Dec 2018
Page range: 21 - 34

Abstract

Abstract

The conditional safety functions at the climate-weather particular states and the unconditional safety functions of the port oil piping transportation system area and the maritime ferry, the mean values and the variances of those systems unconditional lifetimes and other safety indicators are determined. Those safety indicators, considering impact of the climate-weather change process, are evaluated for the piping system operating at under water Baltic sea area and for the maritime ferry operating at Gdynia Port area.

Keywords

  • safety
  • critical infrastructure
  • climate-weather change process
Open Access

The Concept of a Method Improving the Process of Aeronautical Geospatial Data Creation

Published Online: 19 Dec 2018
Page range: 35 - 50

Abstract

Abstract

This article is a continuation of the Authors’ study on the ways to ensure the quality and safety of aeronautical data and information. This time, however, the legal requirements for aeronautical data and information were briefly described and then the concept of purpose and scope of Shewhart control charts’ implementation, presented in [2], was broadened and it was proposed to refer the calculated upper (GLK) and lower (DLK) control limits to the requirements set out in the legal specification including in particular the accuracy values out of the Harmonised List from the Eurocontrol Specification [13]. In order to illustrate the proposed modification, an example of such a card for the measured aeronautical obstacles was presented, considering two cases: that these obstacles are located in Area 3 and in Area 2. Analysed issues will be the subject of Authors’ further study.

Keywords

  • aeronautical data and information
  • Shewhart control charts
  • improvement planning
  • quality
Open Access

A Concept of Reliability Assessment Simulation Model Using Systems Structural Decomposition

Published Online: 19 Dec 2018
Page range: 51 - 74

Abstract

Abstract

The paper presents a concept of reliability estimation of the renewable technical systems consisting of the objects functioning in koon structures. The estimation is performed using computer simulation. Practical dependence between the failure of the entire system and the failures of the objects and elements from which the objects are made are taken into account as the result of the structural decomposition of the system conducted.

Keywords

  • reliability
  • reliability structures
  • computer simulation
  • decomposition
Open Access

New Approach to Torque Measurement Unit Development and its Calibration

Published Online: 19 Dec 2018
Page range: 75 - 86

Abstract

Abstract

The paper deals with the new approach to torque measurement in turboshafts. New construction of torque measurement is described with the highlighted advantages of the construction. The paper familiarizes the reader with the step-by-step algorithm of the torque measurement. As torque measurement units are not ideal, i.e. have manufacturing inaccuracies, so each unit has its own performance. The calibration algorithm to be in charge of obtaining the individual performance from the ideal one is described in the paper as well.

Keywords

  • torque-measurement unit
  • phase-shift measurement algorithm
  • calibration algorithm
  • measurement accuracy
Open Access

IT System for Supporting Cost-Reliability Analysis of Fleet Vehicles

Published Online: 19 Dec 2018
Page range: 87 - 109

Abstract

Abstract

The paper presents the technical aspects of a development of a monitoring system (ISM – Monitoring Information System) allowing a collection, processing and analysis of reliability and cost-related data of the operation of a fleet of vehicles. The platform allows performing advanced analyses according to the LCC (Life Cycle Costing) concept and IRIS compliant RAMS (Reliability, Availability, Maintainability and Safety) methodology. The tool has been developed within the research project titled ‘Increase in the efficiency of the means of public transport following the implementation of the IRIS (International Railway Industry Standard) compliant LCC and RAMS concepts based on an integrated information system’. Thanks to the implementation of the ISM system in the practices of a fleet provider, it is possible to monitor malfunction data (in RAMS indexes, life cycle costs, identification of cost-generating components) and perform multidimensional analyses on the collected historical data related to the operation of vehicles. The presented results have been obtained within the research project number PBS3/B6/30/2015 [1].

Keywords

  • public transport
  • corrective maintenance
  • maintenance cost
Open Access

Reliability-Economics Model of the Operation Process

Published Online: 19 Dec 2018
Page range: 111 - 135

Abstract

Abstract

The article is devoted to the illustration of the relationship of the operation system state assessment in the reliability and economic aspect on a type of information on the state of the object intended for the implementation of an operational task, on the reliability of this object, on the operational task properties (i.e. on the required effect size and the time for its manufacture), on the nature of relationships between a producer and a recipient of the effect. The proposed model of the operation system, as well as a model of the operation process and models of typical operational situations make it possible to find conclusions on a criterion of reliability and economic usability of the operation system.

Keywords

  • object reliability
  • diagnosis scope
  • operational task
  • system’s economic usability
  • producer-recipient relationship
Open Access

Analysis of Reliability States of an Industrial Network Data Transmission System

Published Online: 19 Dec 2018
Page range: 137 - 152

Abstract

Abstract

Industrial networks combine elements of distributed control systems. These elements are process stations, operator stations, engineering stations and other elements, which enable the exchange of data between industrial systems. Industrial systems are used to send process variable values and other data exchanged between the stations - elements of a distributed control system and SCADA systems. The fitness of an entire station system depends on the fitness of the communication system. This is why industrial networks are characterized by high reliability. When speaking about the fitness of a data transmission system, we can consider its instantaneous fitness (functional) or interval fitness (task-related). It is not always necessary to maintain instantaneous fitness. Sometimes interval fitness is enough. The paper discusses the issue of a need to maintain one of them, relative to various types of data transmission.

Keywords

  • instantaneous fitness
  • task-related fitness
  • data transmission system
  • industrial network
Open Access

The Use of Bluetooth Standard for Communication Between Vehicles Under Traffic

Published Online: 19 Dec 2018
Page range: 153 - 169

Abstract

Abstract

Bluetooth is a type of wireless communication used to transmit voice and data at high speeds using radio waves. It is a standard protocol for short-range radio communications between many different types of devices, including mobile phones, computers and other electronics [1]. The trend of integrating new services in vehicles increases rapidly and Bluetooth is one of the emerging communication technologies for realizing ad-hoc networks. The paper presents the possibility of using Bluetooth to build ad-hoc network suitable for the transmission of sound, in particular voice data using the modulation GSFK. We analyzed the features or problems that Bluetooth offers for transmitting audio data in an ad-hoc network. Some initial results of simulations and real-life tests give an impression of the performance and efficiency this standard for the transmission of voice data in an ad-hoc networks [2].

Keywords

  • bluetooth standard
  • communication between vehicles in traffic
  • short-range wireless communication
Open Access

Optimisation of the Municipal Waste Collection Process in a Small Size and Scarcely Populated Municipality

Published Online: 19 Dec 2018
Page range: 171 - 190

Abstract

Abstract

The paper presents a review of legal conditions regarding the process of municipal waste collection. An analysis of systems and solutions for the management and monitoring of a fleet of vehicles that can be used in the operation of means of transport during the implementation of the municipal waste process was carried out. The paper presents a coherent concept of ICT system for the optimization of the municipal waste collection process in a small-sized municipality. The proposed system can be used by companies responsible for waste collection, transport and service companies participating in the waste collection process. By basing the system on commonly available elements and services (Internet, GSM and GPS), its installation and operation is fast, simple and does not require large financial outlays.

Keywords

  • exploitation
  • optimization
  • receiving of waste
Open Access

Analysis of Reliability Structures for Fire Signaling Systems in the Field of Fire Safety and Hardware Requirements

Published Online: 19 Dec 2018
Page range: 191 - 214

Abstract

Abstract

The article presents basic issues related to analysis of reliability structures for selected fire alarm systems (SSP). The developed fire scenario for the selected building can be implemented in practice only with the use of technical devices with the appropriate technical parameters. Practical implementation of SSP on the site includes the use of elements, devices, alarm control panels, detectors, etc. which form a specific technical structure, and thus reliability.

Keywords

  • reliability structures
  • fire signalling system
Open Access

Teaching Methodology of Diagnosis Process on the Example of Intrusion and Hold-Up Alarm System

Published Online: 19 Dec 2018
Page range: 215 - 234

Abstract

Abstract

The article presents a teaching methodology of the diagnosis process of the technical and functional condition of intrusion and hold-up alarm system (SSWiN). Laboratory model SSWiN is a representation of a real intrusion and hold-up system. The lecturer has the opportunity to ask a dozen different independent damages. The aim of the laboratory exercises is to familiarize students with the methodology and structure of the diagnosis SSWiN.

Keywords

  • detector
  • intrusion and hold-up alarm system
  • diagnosis
Open Access

The Evaluation of the Exhaust Emission Level of Combat Vehicles Under Difficult Terrain Conditions on the Exemple Armored Combat Vehicle “Rosomak” - Part I

Published Online: 19 Dec 2018
Page range: 235 - 254

Abstract

Abstract

The paper presents results of the analysis of emissivity of exhaust gases, based on tests special vehicles under difficult terrains conditions. There was tested Armoured Combat Vehicle “ROSOMAK”, what was designed as a modular vehicle to transport people and equipment as well as combat uses too. The research were carried out on both the new vehicles, as well as the already operated on two different military training fields in Poland (Siemianowice Śląskie, Sulejówek).

Keywords

  • special vehicles
  • Armoured Combat Vehicle “ROSOMAK”
  • emissivity of exhaust gasses
Open Access

State of Knowledge on Reliability and Safety in the Light of the Scientific Conferences in 2017

Published Online: 19 Dec 2018
Page range: 255 - 268

Abstract

Abstract

The presented analysis of state of knowledge on reliability and safety is based on publications of 27th European Safety and Reliability Conference ESREL 2017, which took place in Portoroz in Slovenia on 18-22 June 2017 and 52nd and 49rd Seminars of ESReDA European Safety, Reliability and Data Association which were held, respectively: at Vytautas Magnus University in Kaunas, Lithuania (29-31 May 2017) and at European Commission Joint Research Center, Ispra, Italy (13-15 November 2017).

Keywords

  • reliability
  • safety
  • conferences
  • 2017
Open Access

Testing Tools and Evaluation of the Efficiency of UAV Personnel Training According to Kirkpatrick Model

Published Online: 19 Dec 2018
Page range: 269 - 282

Abstract

Abstract

An important field in the process of unmanned aerial vehicles operation (UAV) is the system of training operators and technicians. The article presents methods for measuring and evaluating the effectiveness of training systems using the Kirkpatrick model. This model has been used in the study of the flight crew training system and presents the possibility of its use in the training of unmanned aircraft personnel. The study presents tools and methodology for measuring training effects at individual levels of the Kirkpatrick model.

Keywords

  • training effectiveness
  • Kirkpatrick model
  • unmanned aerial vehicles (UAV)
Open Access

Efficiency of Training Unmanned Aerial Vehicles Personnel

Published Online: 19 Dec 2018
Page range: 283 - 294

Abstract

Abstract

An important field in the process of unmanned aerial vehicles (UAV) operation is the system of training operators and technicians. The article presents methods for measuring and evaluating the effectiveness of training systems and their suitability for use in assessing the effectiveness of training of unmanned aircraft personnel. Based on the results of the research carried out in the actual training system, a model for adapting the program and organizing training of airline personnel to measure and evaluate training outcomes was developed.

Keywords

  • training
  • training effectiveness
  • modular program
  • unmanned aerial vehicle(UAV)
16 Articles
Open Access

Crowd Behavioural Analysis at a Mass Gathering Event

Published Online: 19 Dec 2018
Page range: 5 - 20

Abstract

Abstract

Religious occasions, gathering at fairs and terminals, are the events of crowd gatherings. Such gatherings act as severe threats for crowds because of high density in less space, which ends up in adverse outcomes resulting in crowd stampedes. The movement of an individual person in a crowd is influenced by the physical factors. In the present study, characteristics like age, gender, group size, child holding, child carrying, people with luggage and without luggage are considered for crowd behaviour analysis. The average speed of the crowd movement was observed as 0.86 m/s. The statistical analysis concluded that there was a significant effect of age, gender, density and luggage on the crowd walking speed. Multi-linear regression (MLR) model was developed between crowd speed and significant factors observed from the statistical analysis. Location 1 data was used for the model development. This developed model was validated using Location 2 data. Gender has more significant effect on speed followed by luggage and age. This study helps in proper dispersal of crowd in a planned manner to that of diversified directional flow that exist during crowd gathering events.

Keywords

  • Age
  • Crowd
  • Gender
  • Group
  • Luggage
  • Speed
Open Access

System Safety Model Related to Climate-Weather Change Process Application to Port and Maritime Transport

Published Online: 19 Dec 2018
Page range: 21 - 34

Abstract

Abstract

The conditional safety functions at the climate-weather particular states and the unconditional safety functions of the port oil piping transportation system area and the maritime ferry, the mean values and the variances of those systems unconditional lifetimes and other safety indicators are determined. Those safety indicators, considering impact of the climate-weather change process, are evaluated for the piping system operating at under water Baltic sea area and for the maritime ferry operating at Gdynia Port area.

Keywords

  • safety
  • critical infrastructure
  • climate-weather change process
Open Access

The Concept of a Method Improving the Process of Aeronautical Geospatial Data Creation

Published Online: 19 Dec 2018
Page range: 35 - 50

Abstract

Abstract

This article is a continuation of the Authors’ study on the ways to ensure the quality and safety of aeronautical data and information. This time, however, the legal requirements for aeronautical data and information were briefly described and then the concept of purpose and scope of Shewhart control charts’ implementation, presented in [2], was broadened and it was proposed to refer the calculated upper (GLK) and lower (DLK) control limits to the requirements set out in the legal specification including in particular the accuracy values out of the Harmonised List from the Eurocontrol Specification [13]. In order to illustrate the proposed modification, an example of such a card for the measured aeronautical obstacles was presented, considering two cases: that these obstacles are located in Area 3 and in Area 2. Analysed issues will be the subject of Authors’ further study.

Keywords

  • aeronautical data and information
  • Shewhart control charts
  • improvement planning
  • quality
Open Access

A Concept of Reliability Assessment Simulation Model Using Systems Structural Decomposition

Published Online: 19 Dec 2018
Page range: 51 - 74

Abstract

Abstract

The paper presents a concept of reliability estimation of the renewable technical systems consisting of the objects functioning in koon structures. The estimation is performed using computer simulation. Practical dependence between the failure of the entire system and the failures of the objects and elements from which the objects are made are taken into account as the result of the structural decomposition of the system conducted.

Keywords

  • reliability
  • reliability structures
  • computer simulation
  • decomposition
Open Access

New Approach to Torque Measurement Unit Development and its Calibration

Published Online: 19 Dec 2018
Page range: 75 - 86

Abstract

Abstract

The paper deals with the new approach to torque measurement in turboshafts. New construction of torque measurement is described with the highlighted advantages of the construction. The paper familiarizes the reader with the step-by-step algorithm of the torque measurement. As torque measurement units are not ideal, i.e. have manufacturing inaccuracies, so each unit has its own performance. The calibration algorithm to be in charge of obtaining the individual performance from the ideal one is described in the paper as well.

Keywords

  • torque-measurement unit
  • phase-shift measurement algorithm
  • calibration algorithm
  • measurement accuracy
Open Access

IT System for Supporting Cost-Reliability Analysis of Fleet Vehicles

Published Online: 19 Dec 2018
Page range: 87 - 109

Abstract

Abstract

The paper presents the technical aspects of a development of a monitoring system (ISM – Monitoring Information System) allowing a collection, processing and analysis of reliability and cost-related data of the operation of a fleet of vehicles. The platform allows performing advanced analyses according to the LCC (Life Cycle Costing) concept and IRIS compliant RAMS (Reliability, Availability, Maintainability and Safety) methodology. The tool has been developed within the research project titled ‘Increase in the efficiency of the means of public transport following the implementation of the IRIS (International Railway Industry Standard) compliant LCC and RAMS concepts based on an integrated information system’. Thanks to the implementation of the ISM system in the practices of a fleet provider, it is possible to monitor malfunction data (in RAMS indexes, life cycle costs, identification of cost-generating components) and perform multidimensional analyses on the collected historical data related to the operation of vehicles. The presented results have been obtained within the research project number PBS3/B6/30/2015 [1].

Keywords

  • public transport
  • corrective maintenance
  • maintenance cost
Open Access

Reliability-Economics Model of the Operation Process

Published Online: 19 Dec 2018
Page range: 111 - 135

Abstract

Abstract

The article is devoted to the illustration of the relationship of the operation system state assessment in the reliability and economic aspect on a type of information on the state of the object intended for the implementation of an operational task, on the reliability of this object, on the operational task properties (i.e. on the required effect size and the time for its manufacture), on the nature of relationships between a producer and a recipient of the effect. The proposed model of the operation system, as well as a model of the operation process and models of typical operational situations make it possible to find conclusions on a criterion of reliability and economic usability of the operation system.

Keywords

  • object reliability
  • diagnosis scope
  • operational task
  • system’s economic usability
  • producer-recipient relationship
Open Access

Analysis of Reliability States of an Industrial Network Data Transmission System

Published Online: 19 Dec 2018
Page range: 137 - 152

Abstract

Abstract

Industrial networks combine elements of distributed control systems. These elements are process stations, operator stations, engineering stations and other elements, which enable the exchange of data between industrial systems. Industrial systems are used to send process variable values and other data exchanged between the stations - elements of a distributed control system and SCADA systems. The fitness of an entire station system depends on the fitness of the communication system. This is why industrial networks are characterized by high reliability. When speaking about the fitness of a data transmission system, we can consider its instantaneous fitness (functional) or interval fitness (task-related). It is not always necessary to maintain instantaneous fitness. Sometimes interval fitness is enough. The paper discusses the issue of a need to maintain one of them, relative to various types of data transmission.

Keywords

  • instantaneous fitness
  • task-related fitness
  • data transmission system
  • industrial network
Open Access

The Use of Bluetooth Standard for Communication Between Vehicles Under Traffic

Published Online: 19 Dec 2018
Page range: 153 - 169

Abstract

Abstract

Bluetooth is a type of wireless communication used to transmit voice and data at high speeds using radio waves. It is a standard protocol for short-range radio communications between many different types of devices, including mobile phones, computers and other electronics [1]. The trend of integrating new services in vehicles increases rapidly and Bluetooth is one of the emerging communication technologies for realizing ad-hoc networks. The paper presents the possibility of using Bluetooth to build ad-hoc network suitable for the transmission of sound, in particular voice data using the modulation GSFK. We analyzed the features or problems that Bluetooth offers for transmitting audio data in an ad-hoc network. Some initial results of simulations and real-life tests give an impression of the performance and efficiency this standard for the transmission of voice data in an ad-hoc networks [2].

Keywords

  • bluetooth standard
  • communication between vehicles in traffic
  • short-range wireless communication
Open Access

Optimisation of the Municipal Waste Collection Process in a Small Size and Scarcely Populated Municipality

Published Online: 19 Dec 2018
Page range: 171 - 190

Abstract

Abstract

The paper presents a review of legal conditions regarding the process of municipal waste collection. An analysis of systems and solutions for the management and monitoring of a fleet of vehicles that can be used in the operation of means of transport during the implementation of the municipal waste process was carried out. The paper presents a coherent concept of ICT system for the optimization of the municipal waste collection process in a small-sized municipality. The proposed system can be used by companies responsible for waste collection, transport and service companies participating in the waste collection process. By basing the system on commonly available elements and services (Internet, GSM and GPS), its installation and operation is fast, simple and does not require large financial outlays.

Keywords

  • exploitation
  • optimization
  • receiving of waste
Open Access

Analysis of Reliability Structures for Fire Signaling Systems in the Field of Fire Safety and Hardware Requirements

Published Online: 19 Dec 2018
Page range: 191 - 214

Abstract

Abstract

The article presents basic issues related to analysis of reliability structures for selected fire alarm systems (SSP). The developed fire scenario for the selected building can be implemented in practice only with the use of technical devices with the appropriate technical parameters. Practical implementation of SSP on the site includes the use of elements, devices, alarm control panels, detectors, etc. which form a specific technical structure, and thus reliability.

Keywords

  • reliability structures
  • fire signalling system
Open Access

Teaching Methodology of Diagnosis Process on the Example of Intrusion and Hold-Up Alarm System

Published Online: 19 Dec 2018
Page range: 215 - 234

Abstract

Abstract

The article presents a teaching methodology of the diagnosis process of the technical and functional condition of intrusion and hold-up alarm system (SSWiN). Laboratory model SSWiN is a representation of a real intrusion and hold-up system. The lecturer has the opportunity to ask a dozen different independent damages. The aim of the laboratory exercises is to familiarize students with the methodology and structure of the diagnosis SSWiN.

Keywords

  • detector
  • intrusion and hold-up alarm system
  • diagnosis
Open Access

The Evaluation of the Exhaust Emission Level of Combat Vehicles Under Difficult Terrain Conditions on the Exemple Armored Combat Vehicle “Rosomak” - Part I

Published Online: 19 Dec 2018
Page range: 235 - 254

Abstract

Abstract

The paper presents results of the analysis of emissivity of exhaust gases, based on tests special vehicles under difficult terrains conditions. There was tested Armoured Combat Vehicle “ROSOMAK”, what was designed as a modular vehicle to transport people and equipment as well as combat uses too. The research were carried out on both the new vehicles, as well as the already operated on two different military training fields in Poland (Siemianowice Śląskie, Sulejówek).

Keywords

  • special vehicles
  • Armoured Combat Vehicle “ROSOMAK”
  • emissivity of exhaust gasses
Open Access

State of Knowledge on Reliability and Safety in the Light of the Scientific Conferences in 2017

Published Online: 19 Dec 2018
Page range: 255 - 268

Abstract

Abstract

The presented analysis of state of knowledge on reliability and safety is based on publications of 27th European Safety and Reliability Conference ESREL 2017, which took place in Portoroz in Slovenia on 18-22 June 2017 and 52nd and 49rd Seminars of ESReDA European Safety, Reliability and Data Association which were held, respectively: at Vytautas Magnus University in Kaunas, Lithuania (29-31 May 2017) and at European Commission Joint Research Center, Ispra, Italy (13-15 November 2017).

Keywords

  • reliability
  • safety
  • conferences
  • 2017
Open Access

Testing Tools and Evaluation of the Efficiency of UAV Personnel Training According to Kirkpatrick Model

Published Online: 19 Dec 2018
Page range: 269 - 282

Abstract

Abstract

An important field in the process of unmanned aerial vehicles operation (UAV) is the system of training operators and technicians. The article presents methods for measuring and evaluating the effectiveness of training systems using the Kirkpatrick model. This model has been used in the study of the flight crew training system and presents the possibility of its use in the training of unmanned aircraft personnel. The study presents tools and methodology for measuring training effects at individual levels of the Kirkpatrick model.

Keywords

  • training effectiveness
  • Kirkpatrick model
  • unmanned aerial vehicles (UAV)
Open Access

Efficiency of Training Unmanned Aerial Vehicles Personnel

Published Online: 19 Dec 2018
Page range: 283 - 294

Abstract

Abstract

An important field in the process of unmanned aerial vehicles (UAV) operation is the system of training operators and technicians. The article presents methods for measuring and evaluating the effectiveness of training systems and their suitability for use in assessing the effectiveness of training of unmanned aircraft personnel. Based on the results of the research carried out in the actual training system, a model for adapting the program and organizing training of airline personnel to measure and evaluate training outcomes was developed.

Keywords

  • training
  • training effectiveness
  • modular program
  • unmanned aerial vehicle(UAV)

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