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Number of results: 31
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Abstract

This article presents the simulation of a BLDC motor and its closed control system in FPGA. The simulation is based on a mathematical model of the motor, including the electromagnetic torque, phase currents, back electromotive force, etc. In order to ensure calculation precision, the equations describing the motor were solved using a floating point representation of real numbers, and a small step of numerical calculations of 1 μs was assumed. The time step selection methodology has been discussed in detail. The motor model was executed with the use of Textual Programming Languages (with HDL codes).

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Authors and Affiliations

Marcin Baszyński
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Abstract

The Internet of Things (IoT) is an emerging technology that was conceived in 1999. The key components of the IoT are intelligent sensors, which represent objects of interest. The adjective ‘intelligent’ is used here in the information gathering sense, not the psychological sense. Some 30 billion sensors that ‘know’ the current status of objects they represent are already connected to the Internet. Various studies indicate that the number of installed sensors will reach 212 billion by 2020. Various scenarios of IoT projects show sensors being able to exchange data with the network as well as between themselves. In this contribution, we discuss the possibility of deploying the IoT in cartography for real-time mapping. A real-time map is prepared using data harvested through querying sensors representing geographical objects, and the concept of a virtual sensor for abstract objects, such as a land parcel, is presented. A virtual sensor may exist as a data record in the cloud. Sensors are identifi ed by an Internet Protocol address (IP address), which implies that geographical objects through their sensors would also have an IP address. This contribution is an updated version of a conference paper presented by the author during the International Federation of Surveyors 2014 Congress in Kuala Lumpur. The author hopes that the use of the IoT for real-time mapping will be considered by the mapmaking community.

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Authors and Affiliations

Kazimierz Bęcek
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Abstract

This article presents an efficient method of modelling acoustic phenomena for real-time applications such as computer games. Simplified models of reflections, transmission, and medium attenuation are described along with assessments conducted by a professional sound designer. The article introduces representation of sound phenomena using digital filters for further digital audio processing.
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Authors and Affiliations

Bartłomiej Miga
Bartosz Ziółko
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Abstract

This paper deals with real-time (RT) simulators applied in power electronic applications and implemented in a real inverter. The process of preparing and starting up an active rectifier prototype (with an active filter function), using the real-time OPAL RT simulator is given. The control system of the converter and the results of simulation using the Matlab/Simulink suite are discussed.
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Authors and Affiliations

Marcin Baszyński
Marcin Szlosek
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Abstract

Natural gas is a mixture of 21 components and it is widely used in industries and homes. Knowledge of its thermodynamic properties is essential for designing appropriate processes and equipment. This paper presents simple but precise correlations of how to compute important thermodynamic properties of natural gas. As measuring natural gas composition is costly and may not be effective for real time process, the correlations are developed based on measurable real time properties. The real time properties are temperature, pressure and specific gravity of the natural gas. Calculations with these correlations are compared with measured values. The validations show that the average absolute percent deviation (AAPD) for compressibility factor calculations is 0.674%, for density is 2.55%, for Joule-Thomson coefficient is 4.16%. Furthermore, in this work, new correlations are presented for computing thermal properties of natural gas such as enthalpy, internal energy and entropy. Due to the lack of experimental data for these properties, the validation is done for pure methane. The validation shows that AAPD is 1.31%, 1.56% and 0.4% for enthalpy, internal energy and entropy respectively. The comparisons show that the correlations could predict natural gas properties with an error that is acceptable for most engineering applications.

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Authors and Affiliations

Mahmood Farzaneh-Gord
Hamid Rahbari
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Abstract

In this paper, an algorithm that monitors the power system to detect and classify power quality events in real time is presented. The algorithm is able to detect events caused by waveform distortions and variations of the RMS values of the voltage. Detection of the RMS events is done by comparing the RMS values with certain thresholds, while detection of waveform distortions is made using an algorithm based on multiharmonic leasts-squares fitting.

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Authors and Affiliations

Andrei Ardeleanu
Pedro Ramos
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Abstract

In this paper, some issues of building a reliable, distributed measurement system for monitoring of water quality in reservoir Lake Dobczyckie are presented. The system is based on a measurement station that has the shape of a floating buoy which is supposed to be at anchor on the reservoir. Wireless data transmission problems that were encountered during the development of the buoy, modeling a radio link, and measurements of actual signal strength on the reservoir are discussed. A mathematical approach to procedures of early situation assessment was conducted, and specialized procedures were designed for measurement stations of the system. It is also discussed how such computations can improve a qualitative assessment of system performance in terms of real-time messaging

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Authors and Affiliations

Bogdan Dziadak
Łukasz Makowski
Andrzej Michalski
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Abstract

The paper encompasses the overview of hardware architecture and the systems characteristics of the Fraunhofer driving simulator. First, the requirements of the real-time model and the real-time calculation hardware are defined and discussed in detail. Aspects like transport delay and the parallel computation of complex real-time models are presented. In addition, the interfacing of the models with the simulator system is shown. Two simulator driving tests, including a fully interactive rough terrain driving with a wheeled excavator and a test drive with a passenger car, are set to demonstrate system characteristics. Furthermore, the simulator characteristics of practical significance, such as simulator response time delay, simulator acceleration signal bandwidth obtained from artificial excitation and from the simulator driving test, will be presented and discussed.

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Authors and Affiliations

Michael Kleer
Andrey Gizatullin
Klaus Dreßler
Steffen Müller
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Abstract

Head movement is frequently associated with human motion navigation, and an indispensable aspect of how humans interact with the surrounding environment. In spite of that, the incorporation of head motion and navigation is more often used in the VR (Virtual Reality) environment than the physical environment. This study aims to develop a robot car capable of simple teleoperation, incorporated with telepresence and head movement control for an on-robot real-time head motion mimicking mechanism and directional control, in attempt to provide users the experience of an avatar-like third person’s point of view amid the physical environment. The design consists of three processes running in parallel; Motion JPEG (MJPEG) live streaming to html-Site via local server, Bluetooth communication, and the corresponding movements for the head motion mimicking mechanism and motors which acts in accordance to head motion as captured by the Attitude Sensor and apparent command issued by the user. The design serves its purpose of demonstration with the usage of basic components and is not aimed to provide nor research with regards to user experience.
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Bibliography

[1] Janice, “What Is Telepresence Technology?”, 2017. Retrieved from: https://www.eztalks.com/video-conference/what-is-telepresence-technology.html
[2] Malczewski. K.,“The Rise of Telepresence Robots for Business and Beyond”, 2014. Retrieved from: https://www.factor- tech.com/roundup/this-week-facial-recognition-used-to-capture-fugitive-spacex-commits-to-city-to-city-rocket-travel-and-uk-reveals-it-launched-a-cyber-attack-on-islamic-state/
[3] Kerruish, E. “Lessons on telepresence from the Mars explorer Rovers: Merleau-Ponty and the open perceptual circuit. Culture”, Theory and Critique, 1-15, 2019.
[4] Mould, R. F., “Chernobyl record: the definitive history of the Chernobyl catastrophe”, CRC Press, 2000.
[5] Kratz, S., Vaughan, J., Mizutani, R., & Kimber, D. „Evaluating stereoscopic video with head tracking for immersive teleoperation of mobile telepresence robots”. In Proceedings of the Tenth Annual ACM/IEEE International Conference on Human-Robot Interaction Extended Abstracts (pp. 43-44). ACM, 2015.
[6] Wen, M. C., Yang, C. H., Tsai, M. H., & Kang, S. C., “Teleyes: A telepresence system based on stereoscopic vision and head motion tracking”. Automation in Construction, 89, 199-213, 2018.
[7] Pinter, M., Lai, F., Sanchez, D. S., Ballantyne, J., Roe, D. B., Wang, Y., ... & Wong, C. W., U.S. Patent No. 9,776,327. Washington, DC: U.S. Patent and Trademark Office, 2017.
[8] Lester, D. F., Hodges, K. V., & Anderson, R. C., “Exploration telepresence: A strategy for optimizing scientific research at remote space destinations”. Science Robotics, 2(7), Art-No, 2017.
[9] Nakashima, R., & Shioiri, S., “Why do we move our head to look at an object in our peripheral region? Lateral viewing interferes with attentive search”. PloS One, 9(3), e92284, 2014.
[10] Sadik, M. J., & Lam, M. C., „Stereoscopic Vision Mobile Augmented Reality System Architecture in Assembly Tasks”. J Eng Appl Sci, 12, 2098-2105, 2017.
[11] Raja, D. DC Motor Control with Raspberry-Pi, 2016 Retrieved from https://circuitdigest.com/microcontroller-projects/controlling-dc-motor-using-raspberry-pi.

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Authors and Affiliations

Tan Jia Wee
1
Herman Wahid
1

  1. Universiti Teknologi Malaysia, School of Electrical Engineering, UTM Skudai, Malaysia
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Abstract

The aims of this study were to evaluate the prevalence of Coxiella burnetii on both herd and animal level based on ELISA and PCR tests. Antibodies to C. burnetii were detected in 22 out of the 24 bulk tank milk samples (91.6%) tested by ELISA and the IS1111 element of C. burnetii was detected in 10 out of the 24 samples (41.6%) by real-time polymerase chain reaction (PCR). ELISA testing showed individual seropositivity in 67 out of the 165 cows (40.6%) examined in 24 dairy cattle farms in different parts of the Czech Republic. Our study revealed that the prevalence of C. burnetii has increased substantially in the Czech Republic over the past 30 years, and that the causative agent is a potential risk factor for some reproductive problems in dairy farms and a possible risk factor for human infection.
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Bibliography


Agerholm JS (2013) Coxiella burnetii associated reproductive disorders in domestic animals - a critical review. Acta Vet Scand 55: 13.
Dobos A, Balla E (2021) Industrial dairy cattle farms in Hungary a source of Coxiella burnetii infection in humans. Vector Borne Zoonotic Dis. 21: 498-501.
Dobos A, Gábor G, Wehmann E, Dénes B, Póth-Szebenyi B, Kovács ÁB, Gyuranecz M (2020a) Serological screening for Coxiella burnetii in the context of early pregnancy loss in dairy cows. Acta Vet Hung 68: 305-309.
Dobos A, Kreizinger Z, Kovács ÁB, Gyuranecz M (2020b) Prevalence of Coxiella burnetii in Central and Eastern European dairy herds. Comp Immunol Microbiol Infect Dis 72: 101489.
Duron O, Sidi-Boumedine K, Rousset E, Moutailler S, Jourdain E (2015) The importance of ticks in Q fever transmission: what has (and has not) been demonstrated? Trends Parasitol. 31: 536-552.
ECDC (2019) European Centre for Disease Prevention and Control. Introduction to the annual epidemiological report. Q fever Annual Epide-miological Report. ECDC, Stockholm, 2019.
Eldin C, Mélenotte C, Mediannikov O, Ghigo E, Million M, Edouard S, Mege JL, Maurin M, Raoult D (2017) From Q fever to Coxiella burnetii infection: a paradigm change. Clin Microbiol Rev 30: 115-190
Enserink M (2010) Infectious diseases. Questions abound in Q-fever explosion in the Netherlands. Science 327: 266-267
Ghaoui H, Achour N, Saad-Djaballah A, Smai A, Temim S, Bitam I (2019) Between livestock’s and humans, Q fever disease is emerging at low noise. Acta Sci Microbiol 2: 104-132
Hubálek Z, Juricová Z, Svobodová S, Halouzka J (1993) A serologic survey for some bacterial and viral zoonoses in game animals in the Czech Republic. J Wildl Dis 29: 604-607.
Literák I (1990) Occurrence of Coxiella burnetii antibodies in cattle, sheep and small terrestrial mammals in the western region of Bohemia [Article in Czech]. Vet Med (Praha) 40: 77-80.
Literák I, Calvo Rodríguez B (1994) Latent Q fever in cattle in southern Moravia (Czech Republic). Cent Eur J Publ Health 2: 91-94.
Literák I, Kroupa L (1998) Herd-level Coxiella burnetii seroprevalence was not associated with herd-level bree- ding performance in Czech dairy herds. Prev Vet Med 33: 261-265.
Loftis AD, Reeves WK, Szumlas DE, Abbassy MM, Helmy IM, Moriarity JR (2006) Rickettsial agents in Egyptian ticks collected from domestic animals. Exp Appl Acarol 40: 67-81.
López-Gatius F, Almeria S, Garcia-Ispierto I (2012) Serolo- gical screening for Coxiella burnetii infection and related reproductive perfor-mance in high producing dairy cows. Res Vet Sci 93: 67-73.
Maurin M, Raoult D (1999) Q fever. Clin Microbiol Rev 12: 518-553.
Niemczuk K, Szymańska-Czerwińska M, Zarzecka A, Konarska H (2011) Q fever in a cattle herd and humans in the south-eastern Poland. Laboratory diagnosis of the disease using serological and molecular methods. Bull Vet Inst Pulawy 55: 593-598.
OIE (2018) Manual of diagnostic tests and vaccines for terrestrial animals. Volume 1, Part 3, Section 3. Chapter 3.1.16. Q fever. World Or-ganisation for Animal Health, 8th edition.
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R Core Team (2020) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL https://www.R-project.org/
Řehácek J. (1987) Epidemiology and significance of Q fever in Czechoslovakia. Zbl Bakt Mikrobiol Hyg Ser A: Med Microbiol Infect Dis Virol Parasitol 267: 16-19.
Rodolakis A, Berri M, Hechard C, Caudron C, Souriau A, Bodier CC, Blanchard B, Camuset P, Devillechaise P, Natorp JC, Vadet JP, Arri-cau- Bouvery N (2007) Compa- rison of Coxiella burnetii shedding in milk of dairy bovine, caprine, and ovine herds. J Dairy Sci 90: 5352-5360.
Schimmer B, Schotten N, van Engelen E, Hautvast JLAP, Schneeberger M, van Duijnhoven YTHP (2014) Coxiella burnetii seroprevalence and risk for humans on dairy cattle farms, the Netherlands, 2010-2011. Emerg Infect Dis 20: 417-425.
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Szymańska-Czerwińska M, Galińska EM, Niemczuk K, Zasępa M (2013) Prevalence of Coxiella burnetii infection in foresters in the south-eastern Poland and comparison of diagnostic methods. Ann Agric Environ Med 20: 699-704.
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Authors and Affiliations

A. Dobos
1
I. Fodor
1
T. Tekin
2
D. Đuričić
3
M. Samardzija
4

  1. CEVA-Phylaxia Co. Ltd., Szállás u. 5, Budapest, H-1107, Hungary
  2. Ceva Animal Health Slovakia, Sro. Račianska 153, 831 53 Bratislava, Slovakia
  3. Mount-Trad d.o.o., Industrijska 13, 43280, Garešnica, Croatia
  4. Faculty of Veterinary Medicine University of Zagreb, Heinzelova 55, 10000 Zagreb, Croatia
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Abstract

In this study, a SYBR Green-based real-time quantitative polymerase chain reaction (qPCR) assay was developed for rapid detection of porcine parvovirus (PPV) 6. Primer pairs targeting the conserved regions of PPV6 Capsid gene were designed. Sensitivity analyses revealed the lowest detection limit of the SYBR Green-based real-time PCR assay to be 47.8 copies/μL, which indicated it was 1000 times higher than that found in the conventional PCR investigations. This assay was specific and showed no cross-species amplification with other six porcine viruses. The assay demonstrated high repeatability and reproducibility; the intra- and inter-assay coefficients of variation were 0.79% and 0.42%, respectively. The positive detection rates of 180 clinical samples with SYBR Green-based real-time PCR and conventional PCR were 12.22% (22/180) and 4.44% (8/180), respectively. Our method is sensitive, specific, and reproducible. The use of SYBR Green-based real-time PCR may be suitable for the clinical detection and epidemiological investigation of PPV6.

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Authors and Affiliations

P. Sun
C.X. Bai
D. Zhang
J. Wang
K.K. Yang
B.Z. Cheng
Y.D. Li
Y. Wang
ORCID: ORCID
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Abstract

Rat robots have great potential in rescue and search tasks because of their excellent motion ability. However, most of the current rat-robot systems relay on human guidance due to variable voluntary motor behaviour of rats, which limits their application. In this study, we developed a real-time system to detect a rat robot’s transient motion states, as the prerequisite for further study of automatic navigation. We built the detection model by using a wearable inertial sensor to capture acceleration and angular velocity data during the control of a rat robot. Various machine learning algorithms, including Decision Trees, Random Forests, Logistic Regression, and SupportVector Machines,were employed to performthe classification of motion states. This detection system was tested in manual navigation experiments, with detection accuracy achieving 96.70%. The sequence of transient motion states could be further used as a promising reference for offline behaviour analysis.
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Authors and Affiliations

Yuxin Chen
1
Haoze Xu
2 3
Wei Yang
1 4
Canjun Yang
1 4
Kedi Xu
2 5

  1. Zhejiang University, State Key Laboratory of Fluid Power and Mechatronic Systems, Hangzhou, China
  2. Zhejiang University, Qiushi Academy for Advanced Studies (QAAS), Hangzhou, China
  3. Zhejiang University, Key Laboratory of Biomedical Engineering of Education Ministry, Hangzhou, China
  4. Zhejiang University, Ningbo Research Institute, Ningbo, China
  5. Zhejiang Lab, Hangzhou, China
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Abstract

In order to guarantee the accuracy of turntable angle measurement, a real-time compensation method for turntable positioning precision based on harmonic analysis is proposed in this paper. Firstly, the principle and feasibility of the real-time compensation method are analysed, and a detailed description of harmonic compensation is provided herein. Secondly, we analyse the relationships between the surface number of the polygon with the compensation order of the harmonic function and its corresponding compensation accuracy. The effects of the iterations number and the data width on calculation accuracy in the coordinate rotation digital computer (CORDIC) algorithm are analysed and the quantization models of the approximation error and rounding error of the CORDIC algorithm are established. Then, the calculation of the harmonic error function and real-time compensation processes are implemented on a field programmable gate array (FPGA) chip. The resource occupation and time delay of the phase angle calculation and the harmonic component calculation are discussed separately. Finally, the validity of the harmonic compensation method is proven through comparing the compensation effect with that of linear interpolation and the polynomial compensation method. The influences of the compensation order, the iterations number and the data width on the compensation results are demonstrated by simulation. A test platform with a laboratory-made FPGA circuit is built to evaluate the effect of real-time compensation with the harmonic function and the positioning error compensation can be performed within 760 ns. The results confirmed the effectiveness of the harmonic compensation method, revealing an improvement of the positioning precision from 54.21″ to 1.63″, equivalent to 96.99% reduction in positioning error.
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Authors and Affiliations

Yi Zhou
1
Weibin Zhu
1
Yi Shu
1
Yao Huang
2 3
ORCID: ORCID
Wei Zou
3
Zi Xue
3

  1. China Jiliang University, School of Measurement and Testing Engineering, Hangzhou, 310018, China
  2. Zhejiang University, College of Optical Science and Engineering, State Key Laboratory of Modern Optical Instrumentation, Hangzhou 310027, China
  3. National Institute of Metrology, Beijing, 100029, China
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Abstract

To develop a sensitive, specific, and rapid approach for the detection Getah virus (GETV), a set of primers targeting the conserved region of the E1 gene was created. The TaqMan-based real-time PCR method for GETV detection was developed by optimizing the reaction conditions. The method demonstrated excellent specificity, and amplification did not occur with the causative agents of all prevalent swine viral infections (CSFV, PRRSV, PRV, PEDV, PTV, and JEV), except GETV. Additionally, upon assessing the sensitivity of the method, the minimum detection limit for GETV was found to be 5.94 copies/μL, which is 10 times higher than that of the traditional PCR approach. Further, the intra- and inter-assay variation coefficients were less than 1%, demonstrating good repeatability. Moreover, GETV was found in 10 of the 20 field serum samples using real-time PCR but only in three of the samples using traditional PCR. Consequently, the first GETV TaqMan-based real-time PCR approach based on the E1 gene was developed for GETV pathogenic diagnoses, and this exhibited high specificity, sensitivity, and repeatability. This assay is practical for the pathogenic diagnosis and epidemiology of GETV.
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Authors and Affiliations

A. Lin
1
X. Hu
1
S. Cui
1
T. Yang
1
Z. Zhang
1
P. Li
1
M. Guo
1
Y. Lu
1

  1. College of Life Sciences and Resource Environment, Yichun University, No 576, Xuefu Road, Yuanzhou district, Yichun, Jiangxi, 336000, China
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Abstract

Diarrhea caused by parasitic agents is common in neonatal calves and leads to significant economic losses in cattle farms worldwide. Cryptosporidium spp. is one of the most frequently detected parasitic agents causing diarrhea in neonatal calves. The aim of this study was to investigate the presence of Cryptosporidium spp. on a dairy farm which a has major diarrhea problem. Samples were collected from calves, cows, drinking bowls, and two different artesian water sources, as well as from the environment. All fecal samples were investigated using Kinyoun acid-fast stained slides and real-time PCR targeting the Cryptosporidium spp. COWP gene. In addition, species identification was performed by nested PCR targeting the Cryptosporidium spp. COWP gene and sequencing. Cryptosporidium spp. was detected in 11 calves (30.55%; 11/36) by real-time PCR and the cows were negative. Among real-time PCR positive samples, only five were also found positive by microscopy. Moreover, Cryptosporidium spp. was found in one of the two artesian water sources and five environmental samples by real-time PCR. Among these positive samples, eight were sequenced. According to the RFLP pattern, BLAST and, phylogenetic analyses, all sequenced samples were Cryptosporidium parvum. These findings show the importance of C. parvum as a cause of calf diarrhea on dairy farms.
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Bibliography


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Pilarczyk B, Kołodziejczyk L, Zaja̧czkowska K, Kuźna Grygıel W, Balıcka-Ramısz A, Tomza-Marcınıak A, Pılarczyk R(2009) Prevalence of Eimeria and Crypto- sporidium sp. protozoa in polish cows and in cows imported from the Netherlands as in-calf heifers. Bull Vet Inst Pulawy 53: 637-640.
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Authors and Affiliations

M. Karakavuk
1 2
H. Can
3
M. Döşkaya
1
T. Karakavuk
1
S. Erkunt-Alak
3
A.E. Köseoğlu
3
A. Gül
4
C. Ün
3
Y. Gürüz
1
A. Değirmenci-Döşkaya
1

  1. Ege University Faculty of Medicine, Department of Parasitology, Bornova, İzmir, Turkey
  2. Ege University, Ödemiş Vocational School, Veterinary technology programs, Ödemiş, Izmir, Turkey
  3. Ege University Faculty of Science, Department of Biology, Molecular Biology Section, Bornova, İzmir, Turkey
  4. Ege University Faculty of Engineering, Department of Bioengineering, Bornova, İzmir, Turkey
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Abstract

In this study, we developed a SYBR Green I real-time PCR method for the rapid and sensitive detection of novel porcine parvovirus 7 (PPV7). Specific primers were designed based on the highly conserved region within the Capsid gene of PPV7. The established method was 1,000 times more sensitive than the conventional PCR method and had a detection limit of 35.6 copies. This method was specific and had no cross-reactions with PCV2, PCV3, PRV, PEDV, PPV1, and PPV6. Experiments testing the intra and interassay precision demonstrated a high reproducibility. Testing the newly established method with 200 clinical samples revealed a detection rate up to 17.5% higher than that of the conventional PCR assay. The established method could provide technical support for clinical diagnosis and epidemiological investigation of PPV7.
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Authors and Affiliations

Y.D. Li
1
Z.D. Yu
2
C.X. Bai
2
D. Zhang
2
P. Sun
2
M.L Peng
2
H. Liu
3
ORCID: ORCID
J. Wang
4
Y. Wang
2
ORCID: ORCID

  1. Municipal Key Laboratory of Virology, Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, PR China
  2. Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, PR China
  3. Anhui Animal Diseases Prevention and Control Center and Key Laboratory of Veterinary Pathobiology and Disease Prevention and Control of Anhui Province, Hefei 230091, PR China
  4. Animal Husbandry Base Teaching and Research Section, College of Animal Science and Technology, Hebei North University, Hebei 075000, PR China
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Abstract

Real time simulators of IEC 61850 compliant protection devices can be implemented without their analogue part, reducing costs and increasing versatility. Implementation of Sampled Values (SV) and GOOSE interfaces to Matlab/Simulink allows for interaction with protection relays in closed loop during power system simulation. Properly configured and synchronized Linux system with Real Time (RT) patch, can be used as a low latency run time environment for Matlab/Simulink generated model. The number of overruns during model execution using proposed SV and GOOSE interfaces with 50 µs step size is minimal. The paper discusses the implementation details and time synchronization methods of IEC 61850 real time simulator implemented in Matlab/Simulink that is built on top of run time environment shown in authors preliminary works and is the further development of them. Correct operation of the proposed solution is evaluated during the hardware-in-the-loop testing of ABB REL670 relay.
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Bibliography

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Authors and Affiliations

Karol Kurek
1
ORCID: ORCID
Łukasz Nogal
1
ORCID: ORCID
Ryszard Kowalik
1
Marcin Januszewski
1

  1. Faculty of Electrical Engineering, Warsaw University of Technology, Pl. Politechniki 1, 00-661 Warszawa, Poland
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Abstract

The complexity of power system phenomena challenges power system protection testing to obtain the required adequacy of the testing environment. Hardware-in-the-loop simulation in real-time substantially increases testing capabilities. However, there is still the question of the availability of commercial solutions. To address the challenges, a new hardware-in-the loop system has been designed and implemented utilizing the easily available Matlab/Simulink environment and Linux RT Preempt OS. The custom software part prepared for the presented system is based on the Matlab/Simulink s-function mechanism, Embedded Coder toolbox and Advantech biodaq library as the interface for the utilized I/O cards. The simulator’s real-time performance limits on Linux RT Preempt have been verified, and it was shown that its performance is sufficient to conduct successful tests of protection relays. Consequently, a simple power system protection relay testing example is provided, including a discussion of results. Finally, it has been proven that the presented system can be utilized as a simpler and more accessible hardware-in-the-loop testing alternative to commercial simulators.

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Authors and Affiliations

M. Krakowski
Ł. Nogal
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Abstract

This paper develops a new model of market abuse detection in real time. Market abuse is detected, as Minenna (2003) proposed, on the basis of prediction intervals. The model structure is based on the discrete-time, extended market model introduced by Monteiro, Zaman, Leitterstorf (2007) to analyze the market cleanliness. Parameters of the expected return equation are assumed, however, to be time-varying and estimated under the state-space framework using the extended Kalman filter postulated by Chou, Engle, Kane (1992) to capture the GARCH effect in returns. QML estimation is performed on intraday data; its utilization is proposed as an alternative to the continuous time modeling by Minenna (2003). This framework is generalized to the bivariate case which enables the analysis of daily open/close data. The paper also extends procedures of the statistical verification of the estimated state-space model to include the uncertainty arising from time-invariant parameters.

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Authors and Affiliations

Radosław Cholewiński
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Abstract

A variety of algorithms allows gesture recognition in video sequences. Alleviating the need for interpreters is of interest to hearing impaired people, since it allows a great degree of self-sufficiency in communicating their intent to the non-sign language speakers without the need for interpreters. State-of-theart in currently used algorithms in this domain is capable of either real-time recognition of sign language in low resolution videos or non-real-time recognition in high-resolution videos. This paper proposes a novel approach to real-time recognition of fingerspelling alphabet letters of American Sign Language (ASL) in ultra-high-resolution (UHD) video sequences. The proposed approach is based on adaptive Laplacian of Gaussian (LoG) filtering with local extrema detection using Features from Accelerated Segment Test (FAST) algorithm classified by a Convolutional Neural Network (CNN). The recognition rate of our algorithm was verified on real-life data.

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Authors and Affiliations

Filip Csóka
Jaroslav Polec
Tibor Csóka
Juraj Kačur
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Abstract

Modern control and measurement systems are equipped with interfaces to operate in local area networks and are typically intended to perform complicated data processing and control algorithms. The authors propose a digital system for rapid prototyping of target application devices. The concept solution separates the processing and control section from the hardware interface and user interface section. Both sections constitute independent ARM-based controllers interconnected via a direct USB link. Popular libraries can be used and low-level procedures developed, which enhances the system’s economic viability. A test unit developed for the purpose of the study was built around a SoC ARM7 microsystem and an off-the-shelf palmtop device. It demonstrated a continuous data stream transfer capability up to 150 kB per second, which was sufficient to monitor the performance of an electricity line.

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Authors and Affiliations

Jacek Augustyn
Andrzej Bień
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Abstract

The primary objective of the case study is to improve monitoring, controlling, planning and managing the extraction processes in surface lignite mining. Under the North Bohemian Lignite Basin (also Most Basin) conditions and the Sokolov Basin, wheeled excavators are deployed as the main technology for extracting coal and overlying rock. Their real-time spatial position can be tracked based on data from GNSS technology, inclinometers, and incremental rotary encoders. The measured data is sent to a remote server and stored in the database. It also serves to calculate volumes of extracted masses. Volume calculation, space position visualisation, and wheel boom movements are performed in KVASoftware. It is a program designed for modelling and designing quarries. Knowing the position of the wheel against the digital terrain (quarry), the model is essential for the implementation of many risk-elimination applications, namely with respect to the geological conditions, occupational safety, observance of the profile grade line, the area of extraction, qualitative parameters of the raw material, etc. The mathematical model of backfilling extracted materials is also an integral part of the above-mentioned system.
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Bibliography

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Authors and Affiliations

Dana Vrublová
1
ORCID: ORCID
Roman Kapica
2
ORCID: ORCID
Stanislav Smelik
3
ORCID: ORCID
Markéta Smeliková
3
ORCID: ORCID

  1. VŠB – Technical University of Ostrava , Faculty of Mining and Geology, Institute of Combined Studies in Most, Dělnická 21, Most, Czech Republic
  2. VŠB – Technical University of Ostrava, Faculty of Mining and Geology, Department of Geodesy and Mine Surveying, 17. listopadu 15, Ostrava – Poruba, 708 00, Czech Republic
  3. Geodetic Office, Baška 111, 739 01 Baška, Czech Republic
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Abstract

In this report, ankle rehabilitation routines currently approved by physicians are implemented via novel control algorithms on a recently appeared robotic device known as the motoBOTTE. The physician specifications for gait cycles are translated into robotic trajectories whose tracking is performed twofold depending on the availability of a model: (1) if obtained via the Euler-Lagrange approach along with identification of unknown plant parameters, a new computed-torque control law is proposed; it takes into account the parallel-robot characteristics; (2) if not available, a variation of the active disturbance rejection control technique whose parameters need to be tuned, is employed. A detailed discussion on the advantages and disadvantages of the model-based and model-free results, from the continuous-time simulation to the discrete-time implementation, is included.
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Authors and Affiliations

Juan Carlos Arceo
1
Jorge Álvarez
2
Carlos Armenta
1
Jimmy Lauber
1
Sylvain Cremoux
3
Emilie Simoneau-Buessinger
1
Miguel Bernal
2

  1. Université Polytechnique Hauts-de-France, LAMIH UMR CNRS 8201, F-59313 Valenciennes, France
  2. Sonora Institute of Technology, 5 de Febrero 818 Sur, Ciudad Obregon, Sonora, Mexico
  3. Centre de Recherche Cerveau et Cognition, CNRS UMR 5549, Université de Toulouse, Toulouse 31052, France

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