Metrology and Measurement Systems最新文献_第10页

Transition of emotions from the negatively excited state to positive unexcited state: an ERP perspective 情绪从消极兴奋状态到积极未兴奋状态的转变：ERP视角

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/mms.2022.140030

M. Singh, Mandeep Singh

{"title":"Transition of emotions from the negatively excited state to positive unexcited state: an ERP perspective","authors":"M. Singh, Mandeep Singh","doi":"10.24425/mms.2022.140030","DOIUrl":"https://doi.org/10.24425/mms.2022.140030","url":null,"abstract":"The cognitive aspects like perception, problem-solving, thinking, task performance, etc., are immensely inﬂuenced by emotions making it necessary to study emotions. The best state of emotion is the positive unexcitedstate,alsoknownastheHighValenceLowArousal(HVLA)stateoftheemotion.Thepsychologists endeavourtobringthesubjectsfromanegativelyexcitedstateofemotion(LowValenceHighArousalstate) toapositiveunexcitedstateofemotion(HighValenceLowArousalstate).Intheﬁrstpartofthisstudy, afour-classsubjectindependentemotionclassiﬁerwasdevelopedwithanSVMpolynomialclassiﬁer usingaverageEventRelatedPotential(ERP)anddiﬀerentialaverageERPattributes.Thevisuallyevoked Electroencephalogram(EEG)signalswereacquiredfrom24subjects.Thefour-classclassiﬁcationaccuracy was83%usingaverageERPattributesand77%usingdiﬀerentialaverageERPattributes.Inthesecond partofthestudy,themeditativeinterventionwasappliedto20subjectswhodeclaredthemselvesnegatively excited(inLowValenceHighArousalstateofemotion).TheEEGsignalswereacquiredbeforeandafter themeditativeintervention.Thefour-classsubjectindependentemotionclassiﬁerdevelopedinStudy1 correctlyclassiﬁedthese20subjectstobeinanegativelyexcitedstateofemotion.Aftertheintervention,16 subjectsself-assessedthemselvestobeinapositiveunexcited(HVLA)stateofemotion(whichshowsthe interventionaccuracyof80%).Testingafour-classsubjectindependentemotionclassiﬁerontheEEGdata acquiredafterthemeditativeinterventionvalidated13of16subjectsinapositiveunexcitedstate,yielding anaccuracyof81.3%.","PeriodicalId":18394,"journal":{"name":"Metrology and Measurement Systems","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44856429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative studies of the optical absorption coefficient spectra in the implanted layers in silicon with the use of nondestructive spectroscopic techniques 利用无损光谱技术对硅注入层的光吸收系数光谱进行比较研究

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/mms.2020.132778

K. Dorywalski, Ł. Chrobak, M. Malinski

引用次数: 7

A comparison between profile and areal surface roughness parameters 轮廓和面形表面粗糙度参数的比较

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/mms.2021.137133

Baofeng He, Siyuan Ding, Zhaoyao Shi

引用次数: 9

An evaluation of the accuracy of inverter sync angle during the grid's disturbances 电网扰动时逆变器同步角精度的评估

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/MMS.2020.132780

W. Jarzyna, Dariusz Zieliński, K. Gopakumar

引用次数: 11

An arbitrary waveform synthesis structure with high sampling rate and low spurious 一种具有高采样率和低杂散的任意波形合成结构

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/mms.2022.140027

Wenhao Zhao, Shulin Tian, Guangkun Guo, Jiajing You, Qiong Wu, Ke Liu

{"title":"An arbitrary waveform synthesis structure with high sampling rate and low spurious","authors":"Wenhao Zhao, Shulin Tian, Guangkun Guo, Jiajing You, Qiong Wu, Ke Liu","doi":"10.24425/mms.2022.140027","DOIUrl":"https://doi.org/10.24425/mms.2022.140027","url":null,"abstract":"The arbitrary waveform generator is characterised by its ﬂexible signal generation, high frequency resolution and rapid frequency switching speed and is wildly used in ﬁelds like communication, radar systems, quantum control, astronautics and biomedicine. With continuous development of technology, higher requirements are placed on to the arbitrary waveform generator. Sampling rate determines the bandwidth of the output signal, spurious-free dynamic range determines the quality of generated signal. Due to above, these two indicators’ improvement is vital. However, the existing waveform generation methods cannot generate signals with quality good enough due to their technical limitations, and in order to realize a high system sampling rate, to accomplish waveform generation process in FPGA, multipath parallel structure is needed. Therefore, we proposed a parallel waveform synthesis structure based on digital resampling, which ﬁxed the problems existing in the current methods eﬀectively and achieved a high sampling rate as well as high quality arbitrary waveform synthesis. We also built up an experimental test bench to validate the proposed structure.","PeriodicalId":18394,"journal":{"name":"Metrology and Measurement Systems","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42030031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Rotation and twist measurement using tilted fibre bragg gratings 利用倾斜光纤布拉格光栅测量旋转和扭曲

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/123893

P. Kisała, K. Skorupski, S. Cięszczyk, P. Panas, J. Klimek

引用次数: 16

Rotary upgrading method and its experimental study of an inertially stabilized platform 惯性稳定平台的旋转提升方法及其实验研究

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/MMS.2019.130566

Rong Guo, Xueyun Wang, Jingjuan Zhang, Tianxiao Song

{"title":"Rotary upgrading method and its experimental study of an inertially stabilized platform","authors":"Rong Guo, Xueyun Wang, Jingjuan Zhang, Tianxiao Song","doi":"10.24425/MMS.2019.130566","DOIUrl":"https://doi.org/10.24425/MMS.2019.130566","url":null,"abstract":"Rotation modulation can significantly improve the navigation accuracies of an inertial navigation system (INS) and a strap-down configuration dominating in this type of INS. However, this style of construction is not a good scheme since it has no servo loop to counteract a vehicle manoeuvre. This paper proposes a rotary upgrading method for a rotational INS based on an inertially stabilized platform. The servo control loop is reconstructed on a four-gimbal platform, and it has the functions of providing both a level stability relative to the navigation frame and an azimuth rotation at a speed of 1.2◦/s. With the platform’s rotation, the observability and the convergence speed of the estimation for the initial alignment can be improved, as well as the biases of the gyroscopes and accelerometers be modulated into zero-mean periodic values. An open-loop initial alignment method is designed, and its detailed algorithms are delivered. The experiment result shows that the newly designed rotational INS has reached an accuracy of 0.38 n mile/h (CEP, circular error probable). The feasibility and engineering applicability of the designed scheme have been validated.","PeriodicalId":18394,"journal":{"name":"Metrology and Measurement Systems","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44278607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Susceptometer in soil magnetic susceptibility studies 土壤磁化率研究中的电纳计

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/mms.2022.138550

Sławomir Janas, T. Magiera, T. Szumiata

引用次数: 1

Sensitivity analysis of a new approach to photovoltaic parameters extraction based on the total least squares method 基于总最小二乘法的光伏参数提取新方法的灵敏度分析

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/mms.2021.137707

Oumaima Mesbahi, M. Tlemçani, F. Janeiro, Abdeloawahed Hajjaji, K. Kandoussi

引用次数: 3

Uncertainty of pressure measurement in a single-bed adsorber 单床吸附器压力测量的不确定度

IF 1 4区工程技术

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI: 10.24425/mms.2022.138544

M. Neska, T. Opara

{"title":"Uncertainty of pressure measurement in a single-bed adsorber","authors":"M. Neska, T. Opara","doi":"10.24425/mms.2022.138544","DOIUrl":"https://doi.org/10.24425/mms.2022.138544","url":null,"abstract":"An adsorber in which sorption processes occur is one of the key components of an adsorption chiller. Precise real-time monitoring of and supervision over these processes are particularly important to ensure their proper execution. The article describes the experimental stand used for the measurement of the adsorber’s operating parameters and analyses pressure measurement uncertainties, taking into account the impact of the temperature on the test system ﬁlled with the adsorbent in the form of silica gel, while concurrently considering the inﬂuence of other factors (e.g. the environment, the A/A, and A/D conversion, or data processing) on measurement uncertainties. A complex analysis of uncertainties was carried out, including the results of the statistical analysis of the measurement data obtained from long-term experimental tests of the object and the uncertainties of the pressure measuring chain by the type B method, involving the consideration of interactions between the system components and the temperature impact on the propagation of uncertainties. As part of the analysis, the characteristic stages of the data collection and processing operations related to the sampling rate and measurement intervals were separated. The article presents the prototype test stand and original pressure measurement system for the veriﬁcation of a single-bed adsorber working below 10 hPa.The novel construction of a single-bed adsorber was used as a test object. Furthermore, in this paper, the developed algorithm of the research method implemented in the system was discussed and positively veriﬁed.","PeriodicalId":18394,"journal":{"name":"Metrology and Measurement Systems","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43368550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0