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Kulesza, Wlodek
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Publications (10 of 42) Show all publications
Felgueiras, C., Costa, R., Alves, G. R., Viegas, C., Fidalgo, A., Marques, M. A., . . . Schlichting, L. C. (2019). A sustainable approach to laboratory experimentation. In: ACM International Conference Proceeding Series: . Paper presented at 7th International Conference on Technological Ecosystems for Enhancing Multiculturality, TEEM, Leon; Spain, 16 October 2019 through 18 October 2019 (pp. 500-507). Association for Computing Machinery
Open this publication in new window or tab >>A sustainable approach to laboratory experimentation
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2019 (English)In: ACM International Conference Proceeding Series, Association for Computing Machinery , 2019, p. 500-507Conference paper, Published paper (Refereed)
Abstract [en]

Sustainability is currently a general concern in society and in particular in the use of laboratories for educational purposes. Although laboratories are unavoidable facilities for education, they often produce waste resulting from students' experiments. To contribute for sustainable solutions in education, the use of remote laboratories instead of the traditional hands-on laboratories should be considered in every engineering course. It is precisely this aspect that is discussed in the current paper. Some comments about the importance of sustainability in education are made. Later, it is described the use of a remote laboratory named VISIR in a course held at the Polytechnic of Porto - School of Engineering, for the conduction of an electronic experiment named Schmitt Trigger. At the end, some comments about the contribution of this remote lab for sustainability in education, are provided. © 2019 ACM.

Place, publisher, year, edition, pages
Association for Computing Machinery, 2019
Keywords
Engineering education, Remote labs, Schmitt Trigger circuits, Sustainability in higher education, VISIR, Ecosystems, Laboratories, Sustainable development, Trigger circuits, Hands-on laboratories, Higher education, Remote laboratories, Schmitt trigger circuit, School of engineering, Sustainable solution, Distance education
National Category
Signal Processing Pedagogy Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:bth-19010 (URN)10.1145/3362789.3362952 (DOI)2-s2.0-85075465239 (Scopus ID)9781450371919 (ISBN)
Conference
7th International Conference on Technological Ecosystems for Enhancing Multiculturality, TEEM, Leon; Spain, 16 October 2019 through 18 October 2019
Available from: 2019-12-13 Created: 2019-12-13 Last updated: 2019-12-13Bibliographically approved
Gradolewski, D., Magenes, G., Johansson, S. & Kulesza, W. (2019). A Wavelet Transform-Based Neural Network Denoising Algorithm for Mobile Phonocardiography. Sensors, 19(4), Article ID 957.
Open this publication in new window or tab >>A Wavelet Transform-Based Neural Network Denoising Algorithm for Mobile Phonocardiography
2019 (English)In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 19, no 4, article id 957Article in journal (Refereed) Published
Abstract [en]

Cardiovascular pathologies cause 23.5% of human deaths, worldwide. An auto-diagnostic system monitoring heart activity, which can identify the early symptoms of cardiac illnesses, might reduce the death rate caused by these problems. Phonocardiography (PCG) is one of the possible techniques able to detect heart problems. Nevertheless, acoustic signal enhancement is required since it is exposed to various disturbances coming from different sources. The most common denoising enhancement is based on the Wavelet Transform (WT). However, the WT is highly susceptible to variations in the noise frequency distribution. This paper proposes a new adaptive denoising algorithm, which combines WT and Time Delay Neural Networks (TDNN). The acquired signal is decomposed by means of the WT using the coif five-wavelet basis at the tenth decomposition level and then provided as input to the TDNN. Besides the advantage of adaptive thresholding, the reason for using TDNNs is their capacity of estimating the Inverse Wavelet Transform (IWT). The best parameters of the TDNN were found for a NN consisting of 25 neurons in the first and 15 in the second layer and the delay block of 12 samples. The method was evaluated on several pathological heart sounds and on signals recorded in a noisy environment. The performance of the developed system with respect to other wavelet-based denoising approaches was validated by the online questionnaire.

Place, publisher, year, edition, pages
MDPI, 2019
Keywords
adaptive filters, auscultation techniques, auto-diagnostic system, cardiovascular pathologies, Inverse Wavelet Transform (IWT), noise cancellation, signal denoising, Time Delay Neural Networks (TDNN)
National Category
Signal Processing
Identifiers
urn:nbn:se:bth-17760 (URN)10.3390/s19040957 (DOI)000460829200208 ()30813479 (PubMedID)
Note

open access

Available from: 2019-04-04 Created: 2019-04-04 Last updated: 2019-05-21Bibliographically approved
Javadi, M. S., Dahl, M., Pettersson, M. & Kulesza, W. (2019). Design of a video-based vehicle speed measurement system: an uncertainty approach. In: 2018 Joint 7th International Conference on Informatics, Electronics & Vision (ICIEV) and 2018 2nd International Conference on Imaging, Vision & Pattern Recognition (icIVPR), Kitakyushu, Japan, 2018, pp. 44-49.: . Paper presented at Joint 7th International Conference on Informatics, Electronics and Vision and 2nd International Conference on Imaging, Vision and Pattern Recognition, ICIEV-IVPR 2018; Kitakyushu; Japan; 25-28 June 2018. IEEE, Article ID 8640964.
Open this publication in new window or tab >>Design of a video-based vehicle speed measurement system: an uncertainty approach
2019 (English)In: 2018 Joint 7th International Conference on Informatics, Electronics & Vision (ICIEV) and 2018 2nd International Conference on Imaging, Vision & Pattern Recognition (icIVPR), Kitakyushu, Japan, 2018, pp. 44-49., IEEE, 2019, article id 8640964Conference paper, Published paper (Refereed)
Abstract [en]

Speed measurement is one of the key components of intelligent transportation systems. It provides suitable information for traffic management and law enforcement. This paper presents a versatile and analytical model for a video-based speed measurement in form of the probability density function (PDF). In the proposed model, the main factors contributing to the uncertainties of the measurement are considered. Furthermore, a guideline is introduced in order to design a video-based speed measurement system based on the traffic and other requirements. As a proof of concept, the model has been simulated and tested for various speeds. An evaluation validates the strength of the model for accurate speed measurement under realistic circumstances.

Place, publisher, year, edition, pages
IEEE, 2019
Keywords
Intelligent transportation systems, Machine vision, Motion analysis, Pattern recognition, Speed measurement
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:bth-17163 (URN)10.1109/ICIEV.2018.8640964 (DOI)000462610300008 ()9781538651612 (ISBN)
Conference
Joint 7th International Conference on Informatics, Electronics and Vision and 2nd International Conference on Imaging, Vision and Pattern Recognition, ICIEV-IVPR 2018; Kitakyushu; Japan; 25-28 June 2018
Available from: 2018-10-23 Created: 2018-10-23 Last updated: 2019-06-28Bibliographically approved
Garcia-Loro, F., Cristobal, E. S., Diaz, G., MacHo, A., Baizan, P., Blazquez, M., . . . Lehtikangas, E. (2019). PILAR: A Federation of VISIR Remote Laboratory Systems for Educational Open Activities. In: Proceedings of 2018 IEEE International Conference on Teaching, Assessment, and Learning for Engineering, TALE 2018: . Paper presented at 2018 IEEE International Conference on Teaching, Assessment, and Learning for Engineering, TALE 2018, Wollongong, 4 December 2018 through 7 December 2018 (pp. 134-141). Institute of Electrical and Electronics Engineers Inc.
Open this publication in new window or tab >>PILAR: A Federation of VISIR Remote Laboratory Systems for Educational Open Activities
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2019 (English)In: Proceedings of 2018 IEEE International Conference on Teaching, Assessment, and Learning for Engineering, TALE 2018, Institute of Electrical and Electronics Engineers Inc. , 2019, p. 134-141Conference paper, Published paper (Refereed)
Abstract [en]

Social demands have promoted an educational approach based on an 'anywhere and anytime' premise. Remote laboratories have emerged as the answer to the demands of technical educational areas for adapting themselves to this scenario. The result has not only benefit distance learning students but has provided new learning scenarios both for teachers and students as well as allowing a flexible approach to experimental topics. However, as any other solution for providing practical scenarios (hands-on labs, virtual labs or simulators), remote labs face several constraints inherited from the subsystems of its deployment - hardware (real instruments, equipment and scenario) and software (analog/digital conversions, communications, workbenches, etc.}. This paper describes the Erasmus+ project Platform Integration of Laboratories based on the Architecture of visiR (PILAR) which deals with several units of the federation installed in different educational institutions and devoted to analog electronics and electrical circuits. Based on the limitations of remote labs, the need for the federation will be justified and its benefits will be described by taking advantage of its strengths. The challenges that have come up during the different stages and the different approaches to design are also going to be described and analyzed. © 2018 IEEE.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2019
Keywords
electronics, federation, laboratory, PILAR, remote lab, VISIR, Electronic equipment, Laboratories, Students, Educational approach, Educational institutions, Platform integrations, Remote laboratory systems, Remote-labs, Distance education
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:bth-17705 (URN)10.1109/TALE.2018.8615277 (DOI)2-s2.0-85062089491 (Scopus ID)9781538665220 (ISBN)
Conference
2018 IEEE International Conference on Teaching, Assessment, and Learning for Engineering, TALE 2018, Wollongong, 4 December 2018 through 7 December 2018
Available from: 2019-03-07 Created: 2019-03-07 Last updated: 2019-03-08Bibliographically approved
Alves, G. R., Felgueiras, M., Viegas, C., Fidalgo, A., Castro, M., García-Zubía, J., . . . Schlichting, L. C. (2018). A sustainable approach to let students do more real experiments with electrical and electronic circuits. In: GarciaPenalvo, FJ (Ed.), SIXTH INTERNATIONAL CONFERENCE ON TECHNOLOGICAL ECOSYSTEMS FOR ENHANCING MULTICULTURALITY (TEEM'18): . Paper presented at 6th International Conference on Technological Ecosystems for Enhancing Multiculturality, TEEM 2018; Salamanca; Spain; 24 October 2018 through 26 October 2018 (pp. 508-514). Association for Computing Machinery
Open this publication in new window or tab >>A sustainable approach to let students do more real experiments with electrical and electronic circuits
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2018 (English)In: SIXTH INTERNATIONAL CONFERENCE ON TECHNOLOGICAL ECOSYSTEMS FOR ENHANCING MULTICULTURALITY (TEEM'18) / [ed] GarciaPenalvo, FJ, Association for Computing Machinery , 2018, p. 508-514Conference paper, Published paper (Refereed)
Abstract [en]

The present paper focus on the use of remote laboratories in higher education from a sustainability viewpoint. The particular case of engineering education, and, within it, the more specific subject of experiments with electrical and electronic circuits is presented first, to then discuss the benefits of using remote labs, while considering the three dimensions of sustainable development, i.e.: economic practice, environmental protection, and social integration. The paper debates how remote labs address each dimension. © 2018 Copyright is held by the owner/author(s). Publication rights licensed to ACM.

Place, publisher, year, edition, pages
Association for Computing Machinery, 2018
Keywords
Electrical, Electronic circuits, Engineering education, Experimental skills, Remote labs, Sustainable higher education, VISIR, Ecosystems, Electric network parameters, Environmental protection, Laboratories, Networks (circuits), Sustainable development, Timing circuits, Higher education, Distance education
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:bth-17459 (URN)10.1145/3284179.3284265 (DOI)000458683900086 ()2-s2.0-85058554659 (Scopus ID)9781450365185 (ISBN)
Conference
6th International Conference on Technological Ecosystems for Enhancing Multiculturality, TEEM 2018; Salamanca; Spain; 24 October 2018 through 26 October 2018
Available from: 2019-01-09 Created: 2019-01-09 Last updated: 2019-03-08Bibliographically approved
Garcia-Loro, F., Macho, A., Cristobal, E. S., Diaz, G., Castro, M., Kulesza, W., . . . Lehtikangas, E. (2018). Experimenting in PILAR federation: A common path for the future. In: PROCEEDINGS OF 2018 IEEE GLOBAL ENGINEERING EDUCATION CONFERENCE (EDUCON) - EMERGING TRENDS AND CHALLENGES OF ENGINEERING EDUCATION: . Paper presented at 2018 IEEE Global Engineering Education Conference - Emerging Trends and Challenges of Engineering Education, EDUCON, Santa Cruz de Tenerife (pp. 1518-1523). IEEE Computer Society
Open this publication in new window or tab >>Experimenting in PILAR federation: A common path for the future
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2018 (English)In: PROCEEDINGS OF 2018 IEEE GLOBAL ENGINEERING EDUCATION CONFERENCE (EDUCON) - EMERGING TRENDS AND CHALLENGES OF ENGINEERING EDUCATION, IEEE Computer Society , 2018, p. 1518-1523Conference paper, Published paper (Refereed)
Abstract [en]

The PILAR (Platform Integration of Laboratories based on the Architecture of visiR) Erasmus Plus project started in September 2016 and will last three years. The core of the PILAR project is the VISIR remote laboratory-Virtual Instruments System In Reality-. The project aims for a federation of five of the existing VISIR nodes, sharing experiments, capacity and resources among partners, and to provide access to VISIR remote lab, through PILAR consortium, to students from other educational institutions. PILAR will be the framework from which management tasks will be performed and laboratories/experiments will be shared. PILAR will also foster the Special Interest Group of VISIR under the Global Online Laboratory Consortium (GOLC) of the International Association of Online Engineering (IAOE). © 2018 IEEE.

Place, publisher, year, edition, pages
IEEE Computer Society, 2018
Keywords
electronics, federation, PILAR, remote laboratory, VISIR, Electronic equipment, Engineering education, Laboratories, Educational institutions, International Association, Platform integrations, Remote laboratories, Special interest groups, Distance education
National Category
Pedagogy Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:bth-16632 (URN)10.1109/EDUCON.2018.8363413 (DOI)000434866100212 ()2-s2.0-85048078534 (Scopus ID)9781538629574 (ISBN)
Conference
2018 IEEE Global Engineering Education Conference - Emerging Trends and Challenges of Engineering Education, EDUCON, Santa Cruz de Tenerife
Available from: 2018-06-27 Created: 2018-06-27 Last updated: 2018-06-29Bibliographically approved
Jachimczyk, B., Dziak, D., Czapla, J., Damps, P. & Kulesza, W. (2018). IoT on-board system for driving style assessment. Sensors, 18(4), Article ID 1233.
Open this publication in new window or tab >>IoT on-board system for driving style assessment
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2018 (English)In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 18, no 4, article id 1233Article in journal (Refereed) Published
Abstract [en]

The assessment of skills is essential and desirable in areas such as medicine, security, and other professions where mental, physical, and manual skills are crucial. However, often such assessments are performed by people called “experts” who may be subjective and are able to consider a limited number of factors and indicators. This article addresses the problem of the objective assessment of driving style independent of circumstances. The proposed objective assessment of driving style is based on eight indicators, which are associated with the vehicle’s speed, acceleration, jerk, engine rotational speed and driving time. These indicators are used to estimate three driving style criteria: safety, economy, and comfort. The presented solution is based on the embedded system designed according to the Internet of Things concept. The useful data are acquired from the car diagnostic port—OBD-II—and from an additional accelerometer sensor and GPS module. The proposed driving skills assessment method has been implemented and experimentally validated on a group of drivers. The obtained results prove the system’s ability to quantitatively distinguish different driving styles. The system was verified on long-route tests for analysis and could then improve the driver’s behavior behind the wheel. Moreover, the spider diagram approach that was used established a convenient visualization platform for multidimensional comparison of the result and comprehensive assessment in an intelligible manner. © 2018 by the authors. Licensee MDPI, Basel, Switzerland.

Place, publisher, year, edition, pages
MDPI AG, 2018
Keywords
Driver’s behavior, Driving style, Eco driving, Embedded system, Internet of things, Real-time vehicle tracking, Skills assessment, Behavioral research, Diagnosis, Embedded systems, Accelerometer sensor, Comprehensive assessment, Driving styles, Eco-driving, Objective assessment, Real time, Visualization platforms, Automobile safety devices
National Category
Signal Processing
Identifiers
urn:nbn:se:bth-16152 (URN)10.3390/s18041233 (DOI)000435574800305 ()2-s2.0-85045628840 (Scopus ID)
Note

open access

Available from: 2018-05-04 Created: 2018-05-04 Last updated: 2018-07-12
Alves, G., Fidalgo, A., Marques, M., Viegas, M., Felgueiras, M., Costa, R., . . . Pozzo, M. (2018). USING A 3-TIER TRAINING MODEL FOR EFFECTIVE EXCHANGE OF GOOD PRACTICES IN AN ERASMUS plus PROJECT. In: Chova, LG Martinez, AL Torres, IC (Ed.), 12TH INTERNATIONAL TECHNOLOGY, EDUCATION AND DEVELOPMENT CONFERENCE (INTED): . Paper presented at 12th International Technology, Education and Development Conference (INTED), MAR 05-07, 2018, Valencia, SPAIN (pp. 6392-6400). IATED-INT ASSOC TECHNOLOGY EDUCATION & DEVELOPMENT
Open this publication in new window or tab >>USING A 3-TIER TRAINING MODEL FOR EFFECTIVE EXCHANGE OF GOOD PRACTICES IN AN ERASMUS plus PROJECT
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2018 (English)In: 12TH INTERNATIONAL TECHNOLOGY, EDUCATION AND DEVELOPMENT CONFERENCE (INTED) / [ed] Chova, LG Martinez, AL Torres, IC, IATED-INT ASSOC TECHNOLOGY EDUCATION & DEVELOPMENT , 2018, p. 6392-6400Conference paper, Published paper (Refereed)
Abstract [en]

VISIR+ is an Erasmus+ project that aims to develop educational modules for electric and electronic circuits theory and practice following an enquiry-based teaching and learning methodology. The project has installed five new VISIR remote labs in Higher Education Institutions located in Argentina and Brazil, to allow students doing more experiments and hence acquire better experimental skills, through a combination of traditional (hands-on), remote and virtual laboratories. A key aspect for the success of this project was to motivate and train teachers in the underpinning educational methodology. As such, VISIR+ adopted a 3-tier training process to effectively support the use of VISIR in the Institutions that received it. This process is based on the "train the trainer" approach, which required the participating partner institutions to identify and engage a number of associated partners, interested in using their newly installed remote lab. To measure the quality of the training process, the same satisfaction questionnaire was used in all training actions. This paper presents a detailed description of the training actions along with the analysis of the satisfaction questionnaire results. Major conclusions are that the quality level of the training process remained practically the same across all training actions and that trainees sometimes considered the practical use of the VISIR remote lab as difficult, irrespectively of where and when the training action took place.

Place, publisher, year, edition, pages
IATED-INT ASSOC TECHNOLOGY EDUCATION & DEVELOPMENT, 2018
Series
INTED Proceedings, ISSN 2340-1079
Keywords
teachers training, remote and virtual labs, VISIR
National Category
Pedagogy
Identifiers
urn:nbn:se:bth-17345 (URN)000448704001059 ()978-84-697-9480-7 (ISBN)
Conference
12th International Technology, Education and Development Conference (INTED), MAR 05-07, 2018, Valencia, SPAIN
Available from: 2018-11-29 Created: 2018-11-29 Last updated: 2018-11-29Bibliographically approved
Jachimczyk, B., Dziak, D. & Kulesza, W. (2017). Customization of UWB 3D-RTLS based on the new uncertainty model of the AoA ranging technique. Sensors, 17(2), Article ID 227.
Open this publication in new window or tab >>Customization of UWB 3D-RTLS based on the new uncertainty model of the AoA ranging technique
2017 (English)In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 17, no 2, article id 227Article in journal (Refereed) Published
Abstract [en]

The increased potential and effectiveness of Real-time Locating Systems (RTLSs) substantially influence their application spectrum. They are widely used, inter alia, in the industrial sector, healthcare, home care, and in logistic and security applications. The research aims to develop an analytical method to customize UWB-based RTLS, in order to improve their localization performance in terms of accuracy and precision. The analytical uncertainty model of Angle of Arrival (AoA) localization in a 3D indoor space, which is the foundation of the customization concept, is established in a working environment. Additionally, a suitable angular-based 3D localization algorithm is introduced. The paper investigates the following issues: the influence of the proposed correction vector on the localization accuracy; the impact of the system’s configuration and LS’s relative deployment on the localization precision distribution map. The advantages of the method are verified by comparing them with a reference commercial RTLS localization engine. The results of simulations and physical experiments prove the value of the proposed customization method. The research confirms that the analytical uncertainty model is the valid representation of RTLS’ localization uncertainty in terms of accuracy and precision and can be useful for its performance improvement. The research shows, that the Angle of Arrival localization in a 3D indoor space applying the simple angular-based localization algorithm and correction vector improves of localization accuracy and precision in a way that the system challenges the reference hardware advanced localization engine. Moreover, the research guides the deployment of location sensors to enhance the localization precision.

Place, publisher, year, edition, pages
MDPI, AG, 2017
Keywords
Accuracy and precision, Angle of arrival, Correction vector, Indoor localization systems, Real-time locating systems, Direction of arrival, Engines, Location, Real time systems, Vector spaces, Analytical uncertainty, Localization accuracy, Localization algorithm, Localization performance, Indoor positioning systems
National Category
Signal Processing
Identifiers
urn:nbn:se:bth-13927 (URN)10.3390/s17020227 (DOI)000395482700011 ()2-s2.0-85011076149 (Scopus ID)
Note

Open access

Available from: 2017-02-22 Created: 2017-02-22 Last updated: 2019-03-28Bibliographically approved
Dziak, D., Jachimczyk, B. & Kulesza, W. (2017). IoT-based information system for healthcare application: Design methodology approach. Applied Sciences, - 7(- 6), Article ID 596.
Open this publication in new window or tab >>IoT-based information system for healthcare application: Design methodology approach
2017 (English)In: Applied Sciences, E-ISSN 2076-3417, Vol. - 7, no - 6, article id 596Article in journal (Refereed) Published
Abstract [en]

- Over the last few decades, life expectancy has increased significantly. However, elderly people who live on their own often need assistance due to mobility difficulties, symptoms of dementia or other health problems. In such cases, an autonomous supporting system may be helpful. This paper proposes the Internet of Things (IoT)-based information system for indoor and outdoor use. Since the conducted survey of related works indicated a lack of methodological approaches to the design process, therefore a Design Methodology (DM), which approaches the design target from the perspective of the stakeholders, contracting authorities and potential users, is introduced. The implemented solution applies the three-axial accelerometer and magnetometer, Pedestrian Dead Reckoning (PDR), thresholding and the decision trees algorithm. Such an architecture enables the localization of a monitored person within four room-zones with accuracy; furthermore, it identifies falls and the activities of lying, standing, sitting and walking. Based on the identified activities, the system classifies current activities as normal, suspicious or dangerous, which is used to notify the healthcare staff about possible problems. The real-life scenarios validated the high robustness of the proposed solution. Moreover, the test results satisfied both stakeholders and future users and ensured further cooperation with the project. © 2017 by the authors.

Place, publisher, year, edition, pages
MDPI AG, 2017
National Category
Signal Processing Other Health Sciences
Identifiers
urn:nbn:se:bth-14672 (URN)10.3390/app7060596 (DOI)000404449800072 ()
Note

open access

Available from: 2017-06-22 Created: 2017-06-22 Last updated: 2017-12-01Bibliographically approved
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