Thematische Bibliographien / FSST

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Auswahl der wissenschaftlichen Literatur zum Thema „FSST“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 18. Februar 2022

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Zeitschriftenartikel zum Thema "FSST"

Boncz, Peter, Thomas Neumann und Viktor Leis. „FSST“. Proceedings of the VLDB Endowment 13, Nr. 12 (August 2020): 2649–61. http://dx.doi.org/10.14778/3407790.3407851.

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Cai, Haiyan, Qingtang Jiang, Lin Li und Bruce W. Suter. „Analysis of adaptive short-time Fourier transform-based synchrosqueezing transform“. Analysis and Applications 19, Nr. 01 (23.05.2020): 71–105. http://dx.doi.org/10.1142/s0219530520400047.

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Recently, the study of modeling a non-stationary signal as a superposition of amplitude and frequency-modulated Fourier-like oscillatory modes has been a very active research area. The synchrosqueezing transform (SST) is a powerful method for instantaneous frequency estimation and component separation of non-stationary multicomponent signals. The short-time Fourier transform-based SST (FSST) reassigns the frequency variable to sharpen the time-frequency representation and to separate the components of a multicomponent non-stationary signal. Very recently the FSST with a time-varying parameter, called the adaptive FSST, was introduced. The simulation experiments show that the adaptive FSST is very promising in instantaneous frequency estimation of the component of a multicomponent signal, and in accurate component recovery. However, the theoretical analysis of the adaptive FSST has not been carried out. In this paper, we study the theoretical analysis of the adaptive FSST and obtain the error bounds for the instantaneous frequency estimation and component recovery with the adaptive FSST and the second-order adaptive FSST.

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Kim, Jinhee, Ilsoo Kim, Ye Eun Kim und Seong-Beom Koh. „The Four Square Step Test for Assessing Cognitively Demanding Dynamic Balance in Parkinson’s Disease Patients“. Journal of Movement Disorders 14, Nr. 3 (30.09.2021): 208–13. http://dx.doi.org/10.14802/jmd.20146.

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Objective The Four Square Step Test (FSST) is a tool that assesses dynamic balance during obstacle step-over. To date, few studies have used the FSST to measure balance in patients with Parkinson’s disease (PD). This study aimed to verify that patients with PD, even at the de novo early stage, take more time to perform the FSST and identify which factors, cognitive status or cardinal motor symptoms, are related most to FSST scores.Methods Thirty-five newly diagnosed drug-naïve patients with PD and 17 controls completed the FSST. The Unified Parkinson’s Disease Rating Scale (UPDRS), Hoehn and Yahr (H&Y) stage, spatiotemporal gait parameters, and neuropsychological test battery were also assessed in the PD group.Results Mean FSST performance time was 8.20 ± 1.61 seconds in patients with PD, which was significantly more than the control group (7.13 ± 1.10 seconds, p = 0.018). UPDRS part III total score and H&Y stage were not significantly associated with FSST, but among the UPDRS subscores, only the postural instability/gait disturbance subscore showed a significant association. Regarding the association between FSST and cognition, the Trail Making Test-B and the Color Word Stroop Test showed strongly inverse correlations with FSST (rho = -0.598 and -0.590, respectively). With respect to gait parameters, double support time was significantly associated with FSST score (rho = 0.342, p = 0.044); however, other parameters, including velocity and step length, were not associated with the FSST.Conclusion The FSST can be used in the clinic to assess dynamic balance with cognitive demands even in the early stages of PD.

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Mathurapongsakul, Phakkanut, und Akkradate Siriphorn. „Four Square Step Test With Foam Is More Accurate Than Those Without Foam for Discriminating Between Older Adults With and Without Fall History“. Journal of Aging and Physical Activity 26, Nr. 4 (01.10.2018): 624–28. http://dx.doi.org/10.1123/japa.2017-0363.

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Objective:The aim was to compare the use of the four square step test (FSST) and the FSST with foam surface (FSST + foam) scores for discriminating between adults, faller older adults, and nonfaller older adults.Methods:Fifty-four participants (18 for each group) were assessed using the FSST and FSST + foam. The area under the curve (AUC) of receiver operating characteristic curve was calculated and used to compare the accuracy of the tests.Results:The FSST + foam was more accurate than FSST for discriminating between faller and nonfaller older adults (area under the curves were 0.765 and 0.725, respectively) and between nonfaller older adults and adults (area under the curves were 0.99 and 0.95, respectively). The cutoff score for discriminating between faller and nonfaller older adults was 11.21, with a sensitivity and specificity of 0.889 and 0.611, respectively.Conclusion:FSST + foam could be used as an alternative assessment for discriminating between adults, faller, and nonfaller older adults.

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Wang, Haibin, und Junbo Long. „Applications of Fractional Lower Order Synchrosqueezing Transform Time Frequency Technology to Machine Fault Diagnosis“. Mathematical Problems in Engineering 2020 (03.08.2020): 1–19. http://dx.doi.org/10.1155/2020/3983242.

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Synchrosqueezing transform (SST) is a high resolution time frequency representation technology for nonstationary signal analysis. The short time Fourier transform-based synchrosqueezing transform (FSST) and the S transform-based synchrosqueezing transform (SSST) time frequency methods are effective tools for bearing fault signal analysis. The fault signals belong to a non-Gaussian and nonstationary alpha (α) stable distribution with 1<α<2 and even the noises being also α stable distribution. The conventional FSST and SSST methods degenerate and even fail under α stable distribution noisy environment. Motivated by the fact that fractional low order STFT and fractional low order S-transform work better than the traditional STFT and S-transform methods under α stable distribution noise environment, we propose in this paper the fractional lower order FSST (FLOFSST) and the fractional lower order SSST (FLOSSST). In addition, we derive the corresponding inverse FLOSST and inverse FLOSSST. The simulation results show that both FLOFSST and FLOSSST perform better than the conventional FSSST and SSST under α stable distribution noise in instantaneous frequency estimation and signal reconstruction. Finally, FLOFSST and FLOSSST are applied to analyze the time frequency distribution of the outer race fault signal. Our results show that FLOFSST and FLOSSST extract the fault features well under symmetric stable (SαS) distribution noise.

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Connors, Karol A., Mary P. Galea und Catherine M. Said. „Feldenkrais Method Balance Classes Improve Balance in Older Adults: A Controlled Trial“. Evidence-Based Complementary and Alternative Medicine 2011 (2011): 1–9. http://dx.doi.org/10.1093/ecam/nep055.

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The objective of this study was to investigate the effects of Feldenkrais Method balance classes on balance and mobility in older adults. This was a prospective non-randomized controlled study with pre/post measures. The setting for this study was the general community. A convenience sample of 26 community-dwelling older adults (median age 75 years) attending Feldenkrais Method balance classes formed the Intervention group. Thirty-seven volunteers were recruited for the Control group (median age 76.5 years). A series of Feldenkrais Method balance classes (the 33312Getting Grounded Gracefully33313 series), two classes per week for 10 weeks, were conducted. Main outcome measures were Activities-Specific Balance Confidence (ABC) questionnaire, Four Square Step Test (FSST), self-selected gait speed (using GAITRite instrumented gait mat). At re-testing, the Intervention group showed significant improvement on all of the measures (ABC,P= .016, FSST,P= .001, gait speed,P< .001). The Control group improved significantly on one measure (FSST,P< .001). Compared to the Control group, the Intervention group made a significant improvement in their ABC score (P= .005), gait speed (P= .017) and FSST time (P= .022). These findings suggest that Feldenkrais Method balance classes may improve mobility and balance in older adults.

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Jia, Dongbao, Cunhua Li, Qun Liu, Qin Yu, Xiangsheng Meng, Zhaoman Zhong, Xinxin Ban und Nizhuan Wang. „Application and Evolution for Neural Network and Signal Processing in Large-Scale Systems“. Complexity 2021 (09.04.2021): 1–7. http://dx.doi.org/10.1155/2021/6618833.

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Low frequency oscillation is an important attribute of human brain activity, and the amplitude of low frequency fluctuation (ALFF) is an effective method to reflect the characteristics of low frequency oscillation, which has been widely used in the treatment of brain diseases and other fields. However, due to the low accuracy of the current analysis methods for low frequency signal extraction of ALFF, we propose the Fourier-based synchrosqueezing transform (FSST), which is often used in the field of signal processing to extract the ALFF of the low frequency power spectrum of the whole-time dimension. The low frequency characteristics of the extracted signal are compared with those of FSST and fast Fourier transform (FFT) through the resting-state data. It is clear that the signal extracted by FSST has more low frequency characteristics, which is significantly different from FFT.

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Junita Siusanti, I Made Widagda und Dodik Pramono. „Comparison Between Ai Chi and Stroke Mass Exercise for Dynamic Balance Improvement in Stroke Patient“. Indonesian Journal of Physical Medicine & Rehabilitation 1, Nr. 1 (12.06.2012): 55–62. http://dx.doi.org/10.36803/ijpmr.v1i1.212.

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Objectives : To observe improvement of dynamic balance in stroke patients who get Ai chi exercise compare to stroke exercise in stroke patients with onset more than six months.Methods : 30 subjects who met the inclution criterias were divided into two groups, Ai chi and stroke mass exercise group. Each group got exercise three times a week for four weeks.A dynamic balance testwith the four square steps test was conducted before exercise program and at the end of the exercise.Results : FSST Ai Chi start 20.48 ± 10.86, FSST end 17.55± 12.24,( p.005), stroke gymnastic start 23.98±9.41, stroke gymnastic end 18.24 ± 8.45 (p.002). In the initial test for all subjects FSST results obtained mean 28.72± 37.25 seconds and the final test of 24.02 ± 35.16 seconds FFT 29 (.443),FTT end 29(.957)Conclusions : Ai chi and stroke exercise training improved dynamic balance of stroke patients with onset more than six months, and statistically there is no different balance dynamic improvement for bothexercise.Keywords : Stroke, Dynamic balance, The four square steps test, Stroke exercise (senam stroke), Ai chi.

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Dong, Kai, Chunrong Yang, Yan Yan, Pengchong Wang, Ying Sun, Ke Wang, Tingli Lu et al. „Investigation of the intracellular oxidative stress amplification, safety and anti-tumor effect of a kind of novel redox-responsive micelle“. Journal of Materials Chemistry B 6, Nr. 7 (2018): 1105–17. http://dx.doi.org/10.1039/c7tb02973j.

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Bouillon, Lucinda E., Douglas K. Sklenka und Amy C. Driver. „Comparison of Training between 2 Cycle Ergometers on Dynamic Balance for Middle-Aged Women“. Journal of Sport Rehabilitation 18, Nr. 2 (Mai 2009): 316–26. http://dx.doi.org/10.1123/jsr.18.2.316.

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Context:Interval cycle training could positively influence dynamic balance in middle-aged women.Objective:To compare training effects of a strength ergometer and a standard ergometer on 3 dynamic balance tests.Design:Repeated measures.Setting:Laboratory.Participants:Seventeen women were randomly assigned to standard (n = 10) or strength cycle ergometry (n = 7). A control group consisted of 7 women.Intervention:Ergometry interval training (3 sessions/wk for 4 wk).Main Outcome Measures:Three balance tests—the Star Excursion Balance Test (SEBT), timed up-and-go (TUG), and four-square step test (FSST)—were performed at pretraining and 4 wk posttraining.Results:Four SEBT directions improved and faster scores for FSST and TUG tests for the standard-cycle group were found, whereas the strength-cycle group only improved their TUG scores. No changes posttraining for the control group.Conclusions:Stationary cycle training should be included in the dynamic balance-rehabilitation protocol for middle-aged women.

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Dissertationen zum Thema "FSST"

Vencel, Michal. „Hodnocení kvality signálů EKG“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442585.

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This seminar work deals with the topic of evaluating the quality of ECG signals. The introductory chapters explain the basic characteristics of ECG signals - measurement, the form of the measured signal, methods of analysis. The cardiac physiology and pathology is presented. The most common types of noise that occur in ECG signals are also mentioned. Further, the reader is acquainted with the importance of the issue of evaluating the quality of ECG signals. In the practical part of the work, two own methods for ECG quality evaluation are presented. First, a brief theoretical introduction to the techniques used in the creation of methoda is given, followed by a description of the principle of algorithms. In order to compare the functionality of the proposed methods, three more methods from other authors are presented. Their principle is briefly described. In the final chapter, all methods are subjected to functionality testing. The results are examined and all methods are compared with each other.

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Rimal, Nischal. „Impact Localization Using Lamb Wave and Spiral FSAT“. University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1388672483.

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Efremovska, Irena, Sijme Geurts und Scott Perret. „Leverage Points for Broader Diffusion of the FSSD“. Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3623.

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The intrinsic characteristics of the Framework for Strategic Sustainable Development (FSSD) make it useful in moving society towards sustainability. However, most of the change agents who work with the FSSD report that it is not diffused widely enough to have a systemic impact on society. The purpose of the study is to enable those who wish to foster such diffusion to be more effective in their efforts by giving them information they need to strategically plan those efforts. An ‘important factors for diffusion’ lens is constructed from Diffusion of Innovations theory and social marketing concepts, and verified with case studies of the diffusion of Biomimicry 3.8, GRI and Cradle to Cradle. 152 current barriers and enablers to broader diffusion of the FSSD are identified from interviews with 27 practitioners and a survey of 58 additional practitioners. These are scored against the lens to determine the current diffusibility of the FSSD, then distilled and influence flows between them mapped, to identify seven leverage points for broader diffusion. Interrelations between these leverage points, as well as other emergent themes, are discussed, conclusions are drawn, and further research suggested.

irena.efrem@gmail.com; sijme@sijme.com; scott@notutopia.com

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Robertson, Jean-Baptiste. „Finite FSS for long wavelengths“. Thesis, University of Kent, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.544052.

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Lima, Antonio Cezar de Castro. „Convoluted element FSS and millimetre wave dichroics“. Thesis, University of Kent, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385891.

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Montalv?o, Emanuele da Silva Rodrigues. „Uma proposta de FSS fractal com geometria simplificada“. Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15338.

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Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico
Frequency Selective Surfaces (FSS) are periodic structures in one or two dimensions that act as spatial filters, can be formed by elements of type conductors patches or apertures, functioning as filters band-stop or band-pass respectively. The interest in the study of FSS has grown through the years, because such structures meet specific requirements as low-cost, reduced dimensions and weighs, beyond the possibility to integrate with other microwave circuits. The most varied applications for such structures have been investigated, as for example, radomes, antennas systems for airplanes, electromagnetic filters for reflective antennas, absorbers structures, etc. Several methods have been used for the analysis of FSS, among them, the Wave Method (WCIP). Are various shapes of elements that can be used in FSS, as for example, fractal type, which presents a relative geometric complexity. This work has as main objective to propose a simplification geometric procedure a fractal FSS, from the analysis of influence of details (gaps) of geometry of the same in behavior of the resonance frequency. Complementarily is shown a simple method to adjust the frequency resonance through analysis of a FSS, which uses a square basic cell, in which are inserted two reentrance and dimensions these reentrance are varied, making it possible to adjust the frequency. For this, the structures are analyzed numerically, using WCIP, and later are characterized experimentally comparing the results obtained. For the two cases is evaluated, the influence of electric and magnetic fields, the latter through the electric current density vector. Is realized a bibliographic study about the theme and are presented suggestions for the continuation of this work
As Superf?cies Seletivas de Frequ?ncia (FSS) s?o estruturas peri?dicas em uma ou duas dimens?es que atuam como filtros espaciais, podendo ser formadas por elementos do tipo patches condutores ou aberturas, funcionando como filtros rejeita-faixa ou passa-faixa, respectivamente. O interesse no estudo das FSS tem crescido atrav?s dos anos, pois tais estruturas atendem a requisitos espec?ficos como baixo custo, dimens?es e pesos reduzidos, al?m da possibilidade de se integrar com outros circuitos de micro-ondas. As mais variadas aplica??es para tais estruturas t?m sido investigadas, como por exemplo, radomes, sistemas de antenas para avi?es, filtros eletromagn?ticos para antenas refletoras, estruturas absorvedoras, etc. V?rios m?todos t?m sido utilizados para a an?lise de FSS, dentre eles, o M?todo das Ondas (WCIP). S?o diversas as formas de elementos que podem ser utilizados em FSS, como por exemplo, os do tipo fractal, que apresenta uma relativa complexidade geom?trica. Este trabalho tem como objetivo principal propor um procedimento de simplifica??o geom?trica de uma FSS fractal, a partir da an?lise da influ?ncia dos detalhes (fendas) da geometria da mesma no comportamento da frequ?ncia de resson?ncia. De forma complementar ? mostrado um m?todo simples de ajustar a frequ?ncia de resson?ncia atrav?s da an?lise de uma FSS, que utiliza uma c?lula b?sica retangular, na qual s?o inseridas duas reentr?ncias e as dimens?es dessas reentr?ncias s?o variadas, tornando poss?vel o ajuste da frequ?ncia. Para isso, as estruturas s?o analisadas numericamente, utilizando o WCIP, e posteriormente s?o caracterizadas experimentalmente, comparando-se os resultados obtidos. Para os dois casos ? avaliada, a influ?ncia dos campos el?trico e magn?tico, este ?ltimo atrav?s do vetor densidade de corrente el?trica. ? realizado um estudo bibliogr?fico a cerca do tema e s?o apresentadas sugest?es para a continuidade deste trabalho

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Ferreira, Hillner. „MATRIOSKA: UMA PROPOSTA DE GEOMETRIA PARA FSS MULTIBANDAS“. reponame:Repositório Institucional do IFPB, 2016. http://repositorio.ifpb.edu.br/jspui/handle/177683/234.

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O progresso tecnol?gico e o aumento da demanda por servi?os em sistemas de telecomunica??es v?m, ao longo das ?ltimas d?cadas, fomentando o desenvolvimento de equipamentos com tamanhos cada vez menores e mais integrados. Essa tend?ncia de unir, em um s? aparelho, diversas tecnologias, tem estimulado o estudo de novas estruturas multibanda. Exibindo a propriedade de um filtro, as superf?cies seletivas em frequ?ncia, FSS, tornaram-se tema de extensivas pesquisas associadas ? opera??o em m?ltiplas frequ?ncias. Como resultado, estas estruturas podem ser encontradas atualmente em um grande n?mero de aplica??es que v?o desde as mais tradicionais, como as tampas do forno de micro-ondas, at? as mais recentes, como em bloqueadores de rede sem fio, etiquetas RFID sem chips, antenas inteligentes, dentre outras. Com objetivo de contribuir para o estudo das FSS, este trabalho ? resultado da investiga??o te?rica e experimental de uma nova proposta de geometria. Inspirado nas famosas bonecas russas matrioskas, o modelo geom?trico desenvolvido apresenta caracter?sticas particularmente interessantes como, por exemplo, a possibilidade de obten??o de frequ?ncias de resson?ncia mais baixas e em maior quantidade, sem comprometer, contudo, a ?rea limite da c?lula unit?ria inicialmente definida. Para an?lise num?rica dessa geometria, o comportamento em frequ?ncia foi obtido a partir do m?todo dos momentos (MoM) utilizando o programa computacional Ansoft Designer. A valida??o e an?lise experimental dos resultados foram conseguidas por meio da constru??o de prot?tipos e medi??es realizadas no Laborat?rio de Medidas em Micro-ondas do GTEMA/IFPB. Os resultados foram discutidos e o comportamento ressonante da FSS estudado, sendo apresentadas sugest?es para trabalhos futuros.

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Cruz, Josiel do Nascimento. „CARACTERIZA??O DE FSS COM GEOMETRIA MATRIOSKA ABERTA“. reponame:Repositório Institucional do IFPB, 2014. http://repositorio.ifpb.edu.br/jspui/handle/177683/240.

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Nos ?ltimos anos os avan?os tecnol?gicos t?m impulsionado as comunica??es sem fio, com uma crescente oferta de servi?os e aplica??es, sendo um desafio para os engenheiros de telecomunica??es. Com caracter?sticas que despertam interesse nos sistemas de comunica??es, as superf?cies seletivas em frequ?ncia, FSS, t?m sido tema de v?rias pesquisas, especialmente por poder apresentar opera??o em m?ltiplas frequ?ncias e com dimens?es reduzidas. As aplica??es com FSS s?o diversas, pode-se destacar algumas, como em tampas de forno de micro-ondas, que ? umas das mais tradicionais, ou mais recentemente, em bloqueadores de redes sem fio, etiquetas RFID sem chip, antenas inteligentes, entre outras aplica??es. Buscando contribuir para o estudo das FSS, este trabalho d? continuidade ao estudo da geometria matrioska, com a an?lise da FSS com a geometria matrioska aberta. Essa geometria ? inspirada nas famosas bonecas russas matrioskas e apresenta caracter?sticas que despertam interesse como, por exemplo, a possibilidade de obten??o de frequ?ncias de resson?ncias mais baixas, assim como m?ltiplas resson?ncias, sem comprometer a ?rea limite da c?lula unit?ria. Neste trabalho foi realizada uma an?lise da estrutura matrioska aberta, a partir da distribui??o da densidade de corrente el?trica, possibilitando um melhor entendimento do comportamento ressonante da estrutura. Foi tamb?m realizada uma an?lise da matrioska aberta, levando em considera??o o seu comprimento efetivo e a posi??o da fenda. Para an?lise num?rica da geometria matrioska aberta, o comportamento em frequ?ncia foi obtido pelo m?todo dos momentos (MoM) utilizando o programa comercial Ansoft DesignerTM. A valida??o e an?lise experimental dos resultados foram conseguidas por meio da constru??o de prot?tipos e as medi??es foram realizadas no Laborat?rio de Medidas em Micro-ondas do GTEMA/IFPB. Foi obtida uma concord?ncia muito boa entre os resultados num?ricos e experimentais.

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Ferreira, Hillner de Paiva Almeida. „MATRIOSKA: UMA PROPOSTA DE GEOMETRIA PARA FSS MULTIBANDAS“. reponame:Repositório Institucional do IFPB, 2014. http://repositorio.ifpb.edu.br/jspui/handle/177683/244.

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O progresso tecnol?gico e o aumento da demanda por servi?os em sistemas de telecomunica??es v?m, ao longo das ?ltimas d?cadas, fomentando o desenvolvimento de equipamentos com tamanhos cada vez menores e mais integrados. Essa tend?ncia de unir, em um s? aparelho, diversas tecnologias, tem estimulado o estudo de novas estruturas multibanda. Exibindo a propriedade de um filtro, as superf?cies seletivas em frequ?ncia, FSS, tornaram-se tema de extensivas pesquisas associadas ? opera??o em m?ltiplas frequ?ncias. Como resultado, estas estruturas podem ser encontradas atualmente em um grande n?mero de aplica??es que v?o desde as mais tradicionais, como as tampas do forno de micro-ondas, at? as mais recentes, como em bloqueadores de rede sem fio, etiquetas RFID sem chips, antenas inteligentes, dentre outras. Com objetivo de contribuir para o estudo das FSS, este trabalho ? resultado da investiga??o te?rica e experimental de uma nova proposta de geometria. Inspirado nas famosas bonecas russas matrioskas, o modelo geom?trico desenvolvido apresenta caracter?sticas particularmente interessantes como, por exemplo, a possibilidade de obten??o de frequ?ncias de resson?ncia mais baixas e em maior quantidade, sem comprometer, contudo, a ?rea limite da c?lula unit?ria inicialmente definida. Para an?lise num?rica dessa geometria, o comportamento em frequ?ncia foi obtido a partir do m?todo dos momentos (MoM) utilizando o programa computacional Ansoft Designer. A valida??o e an?lise experimental dos resultados foram conseguidas por meio da constru??o de prot?tipos e medi??es realizadas no Laborat?rio de Medidas em Micro-ondas do GTEMA/IFPB. Os resultados foram discutidos e o comportamento ressonante da FSS estudado, sendo apresentadas sugest?es para trabalhos futuros.

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Antonopoulos, C. „Studies of FSS for microwave and millimeter wave bands“. Thesis, University of Kent, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245689.

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Bücher zum Thema "FSST"

[FSSR, Frant͡s︡uzskai͡a︡ Sovetskai͡a︡ Sot͡s︡ialisticheskai͡a︡ Respublika: Povestʹ. New York: Effect Pub., 1985.

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Steers, Robin. FSS, Field Security Section. Heathfield, East Sussex, UK: Robin Steers, 1996.

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Parisé, Robert. Les 15 ans de la Fédération des syndicats du secteur aluminium, 1972-1987. [Jonquière]: [Fédération des syndicats du secteur aluminium], 1987.

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Tchernin, Velvl. Dialogn ṿegn der Yidisher ḳulṭur in FSSR. Mosḳṿe: Soṿeṭsḳi pisaṭel, 1986.

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Munk, Ben. Finite antenna arrays and FSS. Hoboken, NJ: John Wiley, 2003.

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Munk, Ben A. Finite Antenna Arrays and FSS. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2003. http://dx.doi.org/10.1002/0471457531.

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FSS code: International code for fire safety systems. 2. Aufl. London: IMO, 2007.

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Bolʹnichnye, dekretnye i posobii︠a︡ na deteĭ za schet FSS RF. Moskva: ABAK, 2010.

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Mubiayi, Mukuna Patrick, Esther Titilayo Akinlabi und Mamookho Elizabeth Makhatha. Current Trends in Friction Stir Welding (FSW) and Friction Stir Spot Welding (FSSW). Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-92750-3.

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Agrawal, Manindra, und Anil Seth, Hrsg. FST TCS 2002: Foundations of Software Technology and Theoretical Computer Science. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-36206-1.

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Buchteile zum Thema "FSST"

Gooch, Jan W. „FSCT“. In Encyclopedic Dictionary of Polymers, 328. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_5333.

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Shahid, Azmeh, Kate Wilkinson, Shai Marcu und Colin M. Shapiro. „Fatigue Severity Scale (FSS)“. In STOP, THAT and One Hundred Other Sleep Scales, 167–68. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9893-4_35.

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Silberztein, Max. „INTEX: An integrated FST toolbox“. In Lecture Notes in Computer Science, 185–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/bfb0031392.

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Umeo, Hiroshi, Keisuke Kubo und Akira Nomura. „Smaller-State Implementations of 2D FSSP Algorithms“. In Theoretical Aspects of Computing – ICTAC 2017, 136–52. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67729-3_9.

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Umeo, Hiroshi. „FSSP Algorithms for Square and Rectangular Arrays“. In Modeling, Simulation and Optimization of Complex Processes - HPSC 2012, 245–59. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09063-4_20.

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Shye, Samuel. „Faceted Smallest Space Analysis (Faceted SSA; FSSA)“. In Encyclopedia of Quality of Life and Well-Being Research, 2129–33. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-0753-5_525.

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Shye, Samuel. „Faceted Smallest Space Analysis (Faceted SSA; FSSA)“. In Encyclopedia of Quality of Life and Well-Being Research, 1–6. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-69909-7_525-2.

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Karttunen, Lauri. „Beyond Morphology: Pattern Matching with FST“. In Systems and Frameworks for Computational Morphology, 1–13. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23138-4_1.

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Yli-Jyrä, Anssi. „On Dependency Analysis via Contractions and Weighted FSTs“. In Shall We Play the Festschrift Game?, 133–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-30773-7_10.

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Umeo, Hiroshi. „FSSP Algorithms for 2D Rectangular Arrays. Recent Developments“. In Reversibility and Universality, 5–36. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73216-9_2.

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Konferenzberichte zum Thema "FSST"

Lankarani, Hamid M., C. S. Koshy und C. K. Thorbole. „Design and Validation of a Component Head Injury Criteria Tester for Aerospace Applications“. In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84436.

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The compliance with Head Injury Criteria (HIC) specified in 14 CFR 23.562 [1] and CFR 25.562 [2] poses a significant problem for many segments of the aerospace industry. The airlines and the manufacturers of jet transports have made claims of high costs and significant schedule overruns during the development and certification of 16G seats because of the difficulties encountered in meeting this requirement. The current practice is to conduct Full Scale Sled Tests (FSST) on impact sleds. This approach can be expensive, since a new seat may be needed for each test. Moreover, some consider the HIC sensitive to changes in the test conditions, such as sled pulse, seat belt elongation, etc., resulting in HIC results from FSSTs showing poor repeatability. These difficulties make it desirable to devise a cheaper, faster, and more repeatable alternative to FSSTs. This paper describes an attempt to address these issues by designing a device, the National Institute for Aviation Research (NIAR) HIC Component Tester (NHCT) using various multibody tools. This device was then fabricated and its performance evaluated against FSSTs conducted under similar test conditions for some typical impact events that occur in an aircraft cabins e.g. impact with bulkheads. The factors compared for this evaluation are the head impact angle, head impact velocity, HIC, HIC window, peak head C.G. resultant acceleration, average head C.G. resultant acceleration, and head C.G. resultant acceleration profiles. The results of these evaluations show that the NHCT already produces test results that correlate significantly with FSST results for impact targets such as bulkheads and its target envelope is expected eventually to include objects such as seat backs.

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Thorbole, Chandrashekhar K., und Hamid M. Lankarani. „Performance Evaluation of HIC Component Testing Device With a Flexible Neck Using Computational Model“. In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68712.

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The Head Injury Criteria (HIC) compliance is an important aircraft interior furnishing certification. This certification confirms the compliance of the HIC requirement as per 14CFR 23.562 [1] and 14 CFR 25.562 [2]. Full scale crash sled tests are widely used destructive test method to show the required compliance of head injury criteria. This method is costly, time consuming and non repeatable. Factors such as sled pulse shape, belt slack, seating posture of the dummy results change in the dynamic conditions which ultimately affect the HIC value. This poses a significant challenge and high costs to the manufactures to show the compliance of aircraft interior furnishings for the certification process. These factors compel the development of alternative method to certify the cabin furnishings for HIC compliance without consuming aircraft seats, which is more repeatable and non time consuming. The laboratory HIC component tester is the device developed to duplicate the full scale crash HIC result. This device is capable to produce similar dynamic conditions upon impact with the test article resulting duplication of the full scale crash test result. The current model is developed with the rigid neck of polycarbonate unlike the flexible neck of Hybrid II part 572 ATD (Anthropomorphic Test Dummy). This study investigates the scope of improvement in dynamic characteristic of the HCTD (HIC Component Testing Device) with flexible neck. Flexible neck performance is evaluated using validated computational model of the HCTD. The computational model is used to simulate the correlation between the HCTD with rigid neck and HCTD with flexible neck with FSST (Full Scale Sled Test). The result demonstrates that HTCD correlates well with the FSST when flexible neck is used and provides conservative results with rigid neck.

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Fairchild, Douglas P., Justin M. Crapps, Wentao Cheng, Huang Tang und Svetlana Shafrova. „Full-Scale Pipe Strain Test Quality and Safety Factor Determination for Strain-Based Engineering Critical Assessment“. In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64191.

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Generating a tensile strain capacity (TSC) prediction model is a difficult challenge in applied mechanics. Because current models are relatively new and extensive strain-based design (SBD) pipeline service experience does not exist, rigorous model validation using full-scale tests (FSTs) is paramount. The lessons learned from 159 FSTs were presented previously and the data base has grown to 173 tests. This data base is used to assess the accuracy of a relatively new TSC prediction model. The new model simulates a single, surface breaking weld flaw; however, some of the FSTs contained interacting or embedded flaws or unintentional weld defects, while others failed by brittle fracture, and still others experienced welding problems rendering them unsuitable for model validation. Of 173 tests, a smaller number (122, 101, or 89 depending on the goal) is used for comparison to the new model. This paper describes (1) the importance of reliable FSTs, (2) how the 173 tests were judged for suitability in model accuracy assessment, and (3) the use of the FST data to develop a safety factor for strain-based engineering critical assessment (SBECA). The safety factor is generated from a 95% upper confidence limit on the ratio of predicted-to-measured TSC. The safety factor is 1.88. Using the new model and this safety factor, a TSC prediction equation is provided for use in SBECA. The practical meaning of this is that if either TSC or tolerable defect size is calculated using the new model, then the probability of being non-conservative is estimated to be 5%.

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Fairchild, Doug P., Svetlana Shafrova, Huang Tang, Justin M. Crapps und Wentao Cheng. „Full-Scale Testing for Strain-Based Design Pipelines: Lessons Learned and Recommendations“. In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33748.

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There are generally two reasons for conducting full-scale tests (FSTs) for the measurement of pipe or weld strain capacity, (1) to generate data useful in verifying the accuracy of a strain capacity prediction model, or (2) to test materials being considered for use. The former case involves exploring variables important to the scope of the model, while the latter involves project specific materials and girth weld procedures often combined with upper bound cases of weld misalignment. Because the challenge of strain-based design is relatively new, FSTs should be used for both reasons cited above. This paper provides observations, lessons learned, and recommendations regarding full-scale pipe strain capacity tests. This information has been developed through the conduct, witness, or review of 159 FSTs. One of the most important aspects of full-scale testing is the preparation of welded pipe test specimens. It is imperative that the specimens be fabricated with materials of known properties and that all possible measures be taken to limit variations from the intended specimen design. It has been observed that unexpected results are often due to irregularities in pipe material strength, weld strength, weld toughness, or the presence of unintended weld defects in a specimen designed to contain just man-made defects. Post-test fractography and metallurgical examination are very useful in explaining the performance of a FST; therefore, failure analysis is discussed.

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Nikitina, Irina Nikolaevna. „EUPHEMISMS IN THE LIGHT OF FUNCTIONAL LINGUISTICS“. In Russian science: actual researches and developments. Samara State University of Economics, 2020. http://dx.doi.org/10.46554/russian.science-2020.03-1-418/421.

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The article studies the concept of a functional semantic-stylistic category (FSSK), stipulates the importance of studying various types of FSSK in relation to different functional styles. The author puts forward a hypothesis about the possibility of distinguishing FSSK of euphemisms. The paper analyzes euphemisms FSSK, characterizes euphemisms used in texts of different functional styles.

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Huang, Cheng, Rongxing Lu, Hui Zhu, Jun Shao und Xiaodong Lin. „FSSR“. In ASIA CCS '16: ACM Asia Conference on Computer and Communications Security. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2897845.2897870.

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Choi, Young-Tai, Norman M. Wereley und Gregory J. Hiemenz. „Frequency Shaped Semi-Active Control for Magnetorheological Fluid-Based Vibration Control Systems“. In ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/smasis2013-3268.

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Novel semi-active vibration controllers are developed in this study for magnetorheological (MR) fluid-based vibration control systems, including: (1) a band-pass frequency shaped semi-active control algorithm, (2) a narrow-band frequency shaped semi-active control algorithm. These semi-active vibration control algorithms designed without resorting to the implementation of an active vibration control algorithms upon which is superposed the energy dissipation constraint. These new Frequency Shaped Semi-active Control (FSSC) algorithms require neither an accurate damper (or actuator) model, nor system identification of damper model parameters for determining control current input. In the design procedure for the FSSC algorithms, the semi-active MR damper is not treated as an active force producing actuator, but rather is treated in the design process as a semi-active dissipative device. The control signal from the FSSC algorithms is a control current, and not a control force as is typically done for active controllers. In this study, two FSSC algorithms are formulated and performance of each is assessed via simulation. Performance of the FSSC vibration controllers is evaluated using a single-degree-of-freedom (DOF) MR fluid-based engine mount system. To better understand the control characteristics and advantages of the two FSSC algorithms, the vibration mitigation performance of a semi-active skyhook control algorithm, which is the classical semi-active controller used in base excitation problems, is compared to the two FSSC algorithms.

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Vivio, Francesco, Vincenzo Vullo und Pierluigi Fanelli. „Analysis of Static Strength and Failure Mode of FSSW Joint in Aluminum Alloy“. In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20419.

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In this paper an analysis of Friction Stir Spot Welds (FSSW), applied to lap joint aluminum alloy is presented. The analyses regards the structural behavior of FSSW joints in order to assess the failure mode and its dependence on mechanical properties distribution of the sheets material and, consequently, on process parameters. FSSW joint is analyzed by means of a complex 3D FE model, which allows to evaluate, in a parametric manner, the multifaceted internal geometry of the joint and the actual distribution of material mechanical characteristics after welding. Experimental tests allowed to verify the results and to calibrate the material characteristics in the FE model.

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Chen, Kai, Xun Liu und Jun Ni. „Electrically Assisted Friction Stir Spot Welding of Aluminum Alloy to Advanced High Strength Steel“. In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-2803.

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This paper studies an electrically assisted friction stir spot welding (FSSW) process for joining aluminum alloy 6061-T6 to TRIP 780 steel. The electrical current shows to reduce the axial plunge force and assist the material flow of the aluminum matrix during the welding process. When electrical pulses and direct current (DC) with the same energy input are applied, the results show insignificant differences. Bulk material flow can be observed in the weld cross sections. A more uniform hook is generated at the Fe/Al interface after applying the current. Besides, the diffusion of aluminum atoms into the steel matrix is enhanced. Regarding the weld quality, electrically assisted FSSW improves the joint lap shear strength when compared with regular FSSW process.

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Yavuzkurt, Savas, und Ganesh R. Iyer. „A Model for Diffusion of Turbulent Kinetic Energy for Calculation of Momentum and Heat Transfer in High FST Flows“. In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30204.

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A modified low-Reynolds number k-ε model (named YI-diffn. model) for predicting effects of high free stream turbulence (FST) on momentum transport and heat transfer in a flat plate turbulent boundary layer is presented. An additional turbulent kinetic energy (TKE) diffusion term incorporating the effects of FST intensity (velocity scale) and length scale was included in the TKE equation. This model was developed with experience from many years of experimental and theoretical studies in the area of high FST flows. The constant cμ in the equation for the transport coefficient μt was modified using experimental data. These modifications were applied to a well-tested k-ε model (K-Y Chien called KYC in this study) under high FST conditions (initial FST intensity, Tui > 5%). Models were implemented in a 2-D boundary layer code. The high FST zero pressure gradient data sets against which the predictions (in the turbulent region) were compared had initial FST intensities of 6.53% and 25.7%. In a previous paper, it was shown that predictions of the original k-ε models became poorer (over prediction up to more than 50% for skin friction coefficient and Stanton number, and under prediction of TKE up to more than 50%) as FST increased to about 26%. In comparison, the new model developed here provided excellent results (within ±3% of experimental data) for skin friction coefficient and Stanton number for both the data sets. TKE results were excellent for Tui = 6.53%, but have scope for improvement in the case of Tui = 25.7%. The present model incorporates physics of transport of free stream turbulence in turbulence modeling and provides a new method for simulating flows with high FST. Future work will focus upon improving the model further and applying it to practical applications like flow over gas turbine blades.

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Berichte der Organisationen zum Thema "FSST"

Gianvittorio, John P., Yahya Rahmat-Samii und Jordi Romeu. Fractal FSS: Various Self-Similar Geometries Used for Dual-Band and Dual-Polarized FSS. Fort Belvoir, VA: Defense Technical Information Center, Januar 2001. http://dx.doi.org/10.21236/ada408001.

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Williams, Michael Donald, Matthew Aaron Nelson und Michael John Brown. Condensed QUIC-PLUME Theory Guide for QUIC-FST. Office of Scientific and Technical Information (OSTI), Mai 2019. http://dx.doi.org/10.2172/1512712.

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Rodacy, P., und F. Burns. A Curie point pyrolysis-dual FSOT (fused silica open tubular) capillary column gas chromatographic system. Office of Scientific and Technical Information (OSTI), November 1989. http://dx.doi.org/10.2172/5065352.

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Chase, J. A. Mixed Waste Management Facility FSS Well Data Groundwater Monitoring Report. Fourth Quarter 1994 and 1994 summary. Office of Scientific and Technical Information (OSTI), März 1995. http://dx.doi.org/10.2172/67218.

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Crain, Tori. The Crossover Effects of Supervisor Work-Family Positive Spillover on Employee Sleep Deficiency: Moderating Effects of Family Supportive Supervisor Behaviors (FSSB). Portland State University Library, Januar 2000. http://dx.doi.org/10.15760/etd.895.

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Meier, David. Perceived Dangerousness of the Job and Well-Being Among Correctional Officers: The Role of Perceived Stress and Family Supportive Supervisor Behaviors (FSSB). Portland State University Library, Januar 2000. http://dx.doi.org/10.15760/etd.1032.

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Bogdan, Alex, und Nikki Soo. Survey of consumer practices with respect to coated frozen chicken products. Food Standards Agency, Juni 2021. http://dx.doi.org/10.46756/sci.fsa.hrb725.

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The Food Standards Agency (FSA) is investigating a spike in Salmonella cases in the UK linked to the consumption of coated frozen chicken products. In March 2021, FSA, in collaboration with Food Standards Scotland (FSS) commissioned Ipsos MORI to conduct an online survey in order to identify consumer behaviours which could increase their risk to foodborne disease. The key research questions were: •Which consumers are purchasing coated frozen chicken products? •How do consumers store and cook these products? •Do consumers follow packaging instructions when cooking and storing these products?•Are consumers putting themselves at risk of Salmonellain the way they, store, cook and handle these products? •Do consumers take appropriate action to protect themselves from risk by washing their hands, and avoiding cross-contamination when handling these products? •Do children (aged 12 or under) or teenagers (aged 13-15) handle and cook these products?

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