Gotowe bibliografie tematyczne / Acceleration patterns

Gotowa bibliografia na temat „Acceleration patterns”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 20 lutego 2023

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Artykuły w czasopismach na temat "Acceleration patterns"

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Burwick, Thomas. "Temporal Coding: Assembly Formation Through Constructive Interference". Neural Computation 20, nr 7 (lipiec 2008): 1796–820. http://dx.doi.org/10.1162/neco.2008.09-06-342.

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Temporal coding is studied for an oscillatory neural network model with synchronization and acceleration. The latter mechanism refers to increasing (decreasing) the phase velocity of each unit for stronger (weaker) or more coherent (decoherent) input from the other units. It has been demonstrated that acceleration generates the desynchronization that is needed for self-organized segmentation of two overlapping patterns. In this letter, we continue the discussion of this remarkable feature, giving also an example with several overlapping patterns. Due to acceleration, Hebbian memory implies a frequency spectrum for pure pattern states, defined as coherent patterns with decoherent overlapping patterns. With reference to this frequency spectrum and related frequency bands, the process of pattern retrieval, corresponding to the formation of temporal coding assemblies, is described as resulting from constructive interference (with frequency differences due to acceleration) and phase locking (due to synchronization).
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JEON, HYEONG-MIN, JI-WON KIM, YURI KWON, JAE-HOON HEO, EUI-BUM CHOI i GWANG-MOON EOM. "UPPER BODY ACCELERATIONS DURING LOCOMOTION IN DIFFERENT AGE GROUPS AND GENDERS". Journal of Mechanics in Medicine and Biology 17, nr 07 (listopad 2017): 1740026. http://dx.doi.org/10.1142/s0219519417400267.

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Aim: The purpose of this study is to measure the acceleration of upper body (pelvis, shoulder and head) during walking and to investigate whether the acceleration patterns differ among age groups and genders. Methods: Twenty-nine old subjects and thirty young subjects participated in this study. Tri-axial accelerations were measured on the back of upper body (head, shoulder and pelvis). Subjects performed two trials of walking on a treadmill in their own comfortable speeds. Three-way ANOVA (repeated measures) was carried out for the root mean square of each directional acceleration with age, gender and sensor position as independent factors. Results: Age effect was significant on the RMS accelerations of the transverse plane. In the anteroposterior direction, the pelvis acceleration was greater in the younger group, while the head acceleration was greater in the older group ([Formula: see text]). In the mediolateral direction, the pelvis acceleration was comparable between age groups but the shoulder and head accelerations were greater in the older group ([Formula: see text]). The overall accelerations were greater in men than in women ([Formula: see text]). The phase-delay and attenuation of shoulder acceleration relative to the pelvis acceleration was smaller for the elderly in AP and ML directions ([Formula: see text]). Normalization of RMS accelerations by height, weight and leg length did not affect the age differences but negated the gender differences. Discussion: Greater head acceleration in older subjects were related to less attenuation of acceleration in the upper body, which may affect the sensory systems in the head and deteriorate balance control during locomotion.
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Davis, Irene, Todd Hayano i Adam Tenforde. "The Relationship Between Vertical Loadrates and Tibial Acceleration Across Footstrike Patterns". Foot & Ankle Orthopaedics 3, nr 3 (1.07.2018): 2473011418S0020. http://dx.doi.org/10.1177/2473011418s00200.

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Category: Other Introduction/Purpose: While the etiology of injuries is multifactorial, impact loading, as measured by the loadrate of the vertical ground reaction force has been implicated. These loadrates are typically measured with a force plate. However, this limits the measure of impacts to laboratory environments. Tibial acceleration, another measure of running impacts, is considered a surrogate for loadrate. It can be measured using new wearable technology that can be used in a runner’s natural environment. However, the correlation between tibial acceleration measured from mobile devices and vertical ground reaction force loadrates, measured from forceplates, is unknown. The purpose of this study was to determine the correlation between vertical and resultant loadrates to vertical and resultant tibial acceleration across different footstrike patterns (FSP) in runners. Methods: The study involved a sample of convenience made up of 169 runners (74 F, 95 M; age: 38.66±13.08 yrs) presenting at a running injury clinic. This included 25 habitual forefoot strike (FFS), 17 midfoot strike (MFS) and 127 rearfoot strike (RFS) runners. Participants ran on an instrumented treadmill (average speed 2.52±0.25 m/s), with a tri-axial accelerometer attached at the left distal medial tibia. Only subjects running with pain <3/10 on a VAS scale during the treadmill run were included to reduce the confounding effect of pain. Vertical average, vertical instantaneous and resultant instantaneous loadrates (VALR, VILR and RILR) and peak vertical and resultant tibial accelerations (VTA, RTA) were averaged for 8 consecutive left steps. Correlation coefficients (r) were calculated between tibial accelerations and loadrates. Results: All tibial accelerations were significantly correlated across all loadrates, with the exception of RTA with VILR for FFS (Table 1) which was nearly significant (p=0.068). Correlations ranged from 0.37-0.82. VTA was strongly correlated with all loadrates (r = 0.66). RTA was also strongly correlated with both loadrates for RFS and MFS, but only moderately correlated with loadrates for FFS (r = 0.47). Correlations were similar across the different loadrates (VALR, VILR, RILR). Conclusion: The stronger correlation between vertical tibial acceleration and all loadrates (VALR, VILR, RILR) suggests that it may be the best surrogate for loadrates when studying impact loading in runners.
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KIM, JI-WON, YU-RI KWON, JAE-HOON HEO, GWANG-MOON EOM, MOON-SEOK KWON, GYE-RAE TACK i SEONG-BEOM KOH. "ACCELERATION PATTERN OF THE UPPER BODY DURING LEVEL WALKING IN PATIENTS WITH PARKINSON'S DISEASE". Journal of Mechanics in Medicine and Biology 16, nr 08 (25.11.2016): 1640025. http://dx.doi.org/10.1142/s021951941640025x.

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The aim of this study was to investigate the effects of Parkinson's disease (PD) on upper body acceleration patterns during level walking. Twenty-three patients with PD and 29 controls of similar age participated in this study. Subjects walked along a 12 m linear walkway at self-selected comfortable speeds. Upper body accelerations were measured using three-axis accelerometers located at the pelvis, shoulder, and head. Acceleration magnitude, stride-to-stride irregularity, and degree of coupling among three body parts were derived from the acceleration signals. In the vertical (supero-inferior) direction, PD patients exhibited a smaller acceleration magnitude, a more irregular pattern, and less coupling of acceleration among body parts compared to the controls ([Formula: see text]). In the anterio-posterior (AP) direction, acceleration magnitude at the pelvis in PD patients was smaller than that in the controls ([Formula: see text]). In addition, the phase lag of AP head acceleration from shoulder and pelvis was smaller in PD patients than in the controls ([Formula: see text]). These results suggest that PD patients walk with reduced ankle power generation and a more rigid upper body in the AP direction and with more irregular muscle force generation in the SI direction.
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Höchel, Joachim, Ryuichi Akiyama, Takuya Masuko, James T. Pearson, Martin Nichelmann i Hiroshi Tazawa. "Development of heart rate irregularities in chick embryos". American Journal of Physiology-Heart and Circulatory Physiology 275, nr 2 (1.08.1998): H527—H533. http://dx.doi.org/10.1152/ajpheart.1998.275.2.h527.

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Heart rate (HR) irregularities in chick embryos were defined as large fluctuations (>10 beats/min) comprising irregular, brief deceleration and/or acceleration of instantaneous HR (IHR). IHR was determined directly from the arterial blood pressure while adequate gas exchange was maintained through an eggshell and chorioallantoic membrane. Five embryos were examined on each day from day 11 to day 19 of incubation. Baseline HR was stable until day 12–13, and on around day 13–14 transient, rapid deceleration of HR (termed V pattern) began to appear, with a subsequent increase in its frequency and magnitude. The acceleration patterns (lambda, avian omega, and periodic patterns) appeared later, and the IHR became increasingly irregular, with additional, spontaneous deceleration and acceleration patterns toward hatching. Additional experiments with intravenous administration of autonomic drugs clearly showed that rapid deceleration of HR was mediated by parasympathetic nervous function but did not always show clear relations of sympathomimetic and sympathetic blocking agents to the acceleration patterns.
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Diffey, Brian L., i Steven A. Frank. "Age-specific acceleration in malignant melanoma". F1000Research 6 (9.01.2017): 27. http://dx.doi.org/10.12688/f1000research.10491.1.

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Background:The overall incidence of melanoma has increased steadily for several years. The relative change in incidence at different ages has not been fully described. Objective:To describe how incidence at different ages has changed over time and to consider what aspects of tumour biology may explain the observed pattern of change in incidence. Methods:The slope of incidencevsage measures the acceleration of cancer incidence with age. We described the pattern of change over time in the overall incidence of melanoma, as well as in acceleration. We used data for males and females from 3 different countries in the 17 sequential 5-year birth-cohort categories from 1895-99 to 1975-79, from which we derived the incidence patterns. Results:Over time, there has been a tendency for the overall incidence of melanoma to increase and for the acceleration (slope) of the age-incidence curves to decline. The changing patterns of melanoma incidence and acceleration differ between males and females and between the countries analysed. Conclusions:The observed pattern in melanoma of rising incidence and declining acceleration occurs in other cancers in response to genetic knockouts of mechanisms that protect against cancer. Perhaps some protective mechanism with respect to melanoma may be less effective now than in the past, possibly because of more intense environmental challenges.
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Diffey, Brian L., i Steven A. Frank. "Age-specific acceleration in malignant melanoma". F1000Research 6 (24.02.2017): 27. http://dx.doi.org/10.12688/f1000research.10491.2.

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Background:The overall incidence of melanoma has increased steadily for several years. The relative change in incidence at different ages has not been fully described. Objective:To describe how incidence at different ages has changed over time and to consider what aspects of tumour biology may explain the observed pattern of change in incidence. Methods:The slope of incidencevsage measures the acceleration of cancer incidence with age. We described the pattern of change over time in the overall incidence of melanoma, as well as in acceleration. We used data for males and females from 3 different countries in the 17 sequential 5-year birth-cohort categories from 1895-99 to 1975-79, from which we derived the incidence patterns. Results:Over time, there has been a tendency for the overall incidence of melanoma to increase and for the acceleration (slope) of the age-incidence curves to decline. The changing patterns of melanoma incidence and acceleration differ between males and females and between the countries analysed. Conclusions:The observed pattern in melanoma of rising incidence and declining acceleration occurs in other cancers in response to genetic knockouts of mechanisms that protect against cancer. Perhaps some protective mechanism with respect to melanoma may be less effective now than in the past, possibly because of more intense environmental challenges.
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Echaveguren, Tomás, Cristian Henríquez i Gustavo Jiménez-Ramos. "Longitudinal Acceleration Models for Horizontal Reverse Curves of Two-Lane Rural Roads". Baltic Journal of Road and Bridge Engineering 15, nr 1 (17.03.2020): 103–25. http://dx.doi.org/10.7250/bjrbe.2020-15.463.

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The operating speed profile models adopt acceleration and deceleration as constant values obtained from kinematic models, assuming that the operating speeds between two consecutive sections are not spatially correlated. Existent research shows that acceleration and deceleration in horizontal reverse curves (HRC) depend on the tangent length and curve radii. In this paper, accelerations/decelerations-geometry models for light cars are proposed. The models are based on the data obtained in-field with a 10 Hz GPS under favourable traffic, weather, and pavement condition to isolate the effect of road geometry over the speed changes. The models were calibrated using the 95th percentile of acceleration probability density function (pdf) obtained section to section in the HRC. It was found that the acceleration and deceleration pdf follow the Burr distribution. Therefore, a Box–Cox transformation is needed to properly calibrate acceleration-geometry models. The models obtained confirmed that accelerations and decelerations depend on the radius of entrance and departure curves of the HRC. The results contribute to better understanding of the acceleration/deceleration patterns of light cars and to enhancing operating speed models in the HRC.
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Jo, Heung-Kuk, i Soo-Young Ye. "Classification of walking patterns using acceleration signal". Journal of the Korean Institute of Information and Communication Engineering 14, nr 8 (31.08.2010): 1901–6. http://dx.doi.org/10.6109/jkiice.2010.14.8.1901.

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Cornou, Cécile, i Søren Lundbye-Christensen. "Classifying sows’ activity types from acceleration patterns". Applied Animal Behaviour Science 111, nr 3-4 (czerwiec 2008): 262–73. http://dx.doi.org/10.1016/j.applanim.2007.06.021.

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Rozprawy doktorskie na temat "Acceleration patterns"

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Davey, Neil P., i n/a. "Acquisition and Analysis of Aquatic Stroke Data From an Accelerometer Based System". Griffith University. School of Microelectronic Engineering, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20061003.153043.

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The aim of this work was to develop devices for elite athletes to record performance related parameters during their training. A device was initially designed and built for rowing to record the motion of the boat. This was to gain understanding of motion signals in a one dimensional plane. The device uses a iPAQ handheld computer for recording and display of data to the user. Using the knowledge obtained from the accelerometer data of the rowing system an initial prototype device was designed and constructed for use in swimming. This device was required to be wearable whilst the swimmer was training, thus it had to record the data onboard. A second version of the swimming device was constructed to improve the usability of the device. The swimming device has fully sealed electronics, wireless charging and infrared communications. The device records three dimensional acceleration patterns at 150Hz, and can store over 6 hours of data using the internal memory. The device can operate for greater than 12 hours before needing to be recharged. The data collected from the swimming device was used to develop processing algorithms to extract when the swimmers push off from the wall, the type of stroke they are swimming, and for freestyle the stroke count. The results of the wall push off algorithm were compared against manual hand timing with 90% algorithm results being with ±1 second of the hand timing data. The stroke type identification algorithm determines which stroke is being swum and presently has an accuracy of 95%. The results of the freestyle stroke count algorithm were compared against manual stroke counts from raw accelerometers data and underwater video. Of the 164 data sets analysed over 90% of the algorithm results were within ±1 strokes of the manual recorded stroke counts.
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Davey, Neil P. "Acquisition and Analysis of Aquatic Stroke Data From an Accelerometer Based System". Thesis, Griffith University, 2004. http://hdl.handle.net/10072/365755.

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The aim of this work was to develop devices for elite athletes to record performance related parameters during their training. A device was initially designed and built for rowing to record the motion of the boat. This was to gain understanding of motion signals in a one dimensional plane. The device uses a iPAQ handheld computer for recording and display of data to the user. Using the knowledge obtained from the accelerometer data of the rowing system an initial prototype device was designed and constructed for use in swimming. This device was required to be wearable whilst the swimmer was training, thus it had to record the data onboard. A second version of the swimming device was constructed to improve the usability of the device. The swimming device has fully sealed electronics, wireless charging and infrared communications. The device records three dimensional acceleration patterns at 150Hz, and can store over 6 hours of data using the internal memory. The device can operate for greater than 12 hours before needing to be recharged. The data collected from the swimming device was used to develop processing algorithms to extract when the swimmers push off from the wall, the type of stroke they are swimming, and for freestyle the stroke count. The results of the wall push off algorithm were compared against manual hand timing with 90% algorithm results being with ±1 second of the hand timing data. The stroke type identification algorithm determines which stroke is being swum and presently has an accuracy of 95%. The results of the freestyle stroke count algorithm were compared against manual stroke counts from raw accelerometers data and underwater video. Of the 164 data sets analysed over 90% of the algorithm results were within ±1 strokes of the manual recorded stroke counts.
Thesis (Masters)
Master of Philosophy (MPhil)
School of Microelectronic Engineering
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Rodenas, Pico David. "Algorithms acceleration of pattern-matching in multi-core architectures". Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/37361.

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L'objectiu d'aquesta tesis es crear o adaptar models de programació per a fer els processadors multi-core accessibles per a la majoria de programadors. Aquest objectiu inclou la possibilitat de reusar els algoritmes existents, la capacitat de depuració, I la capacitat d'introduir els canvis de forma incremental. Contrastem les solucions proposades en diversos tipus de multi-core, incloent sistemes homogenis i heterogenis, i sistemes de memòria compartida i memòria distribuïda. A més a més contribuïm exposant algorismes i programes reals i ensenyant com aquests es poden ser usat per aplicacions en temps quasi real.
The aim of this thesis is to create or adapt a programming model in order to make multi-core processors accessible by almost every programmer. This objective includes existing codes and algorithms reuse, debuggability, and the capacity to introduce changes incrementally. We face multi-cores with many architectures including homogeneity versus heterogeneity and shared-memory versus distributed-memory. We also contribute by exposing real algorithms and programs and showing how some of them can be used for quasi realtime applications.
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Chen, Linchuan. "Accelerating Applications with Pattern-specific Optimizations on Accelerators and Coprocessors". The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1435407747.

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Bayne, Ethan. "Accelerating digital forensic searching through GPGPU parallel processing techniques". Thesis, Abertay University, 2017. https://rke.abertay.ac.uk/en/studentTheses/702de12a-e10b-4daa-8baf-c2c57a501240.

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Background: String searching within a large corpus of data is a critical component of digital forensic (DF) analysis techniques such as file carving. The continuing increase in capacity of consumer storage devices requires similar improvements to the performance of string searching techniques employed by DF tools used to analyse forensic data. As string searching is a trivially-parallelisable problem, general purpose graphic processing unit (GPGPU) approaches are a natural fit. Currently, only some of the research in employing GPGPU programming has been transferred to the field of DF, of which, a closed-source GPGPU framework was used— Complete Unified Device Architecture (CUDA). Findings from these earlier studies have found that local storage devices from which forensic data are read present an insurmountable performance bottleneck. Aim: This research hypothesises that modern storage devices no longer present a performance bottleneck to the currently used processing techniques of the field, and proposes that an open-standards GPGPU framework solution – Open Computing Language (OpenCL) – would be better suited to accelerate file carving with wider compatibility across an array of modern GPGPU hardware. This research further hypothesises that a modern multi-string searching algorithm may be better adapted to fulfil the requirements of DF investigation. Methods: This research presents a review of existing research and tools used to perform file carving and acknowledges related work within the field. To test the hypothesis, parallel file carving software was created using C# and OpenCL, employing both a traditional string searching algorithm and a modern multi-string searching algorithm to conduct an analysis of forensic data. A set of case studies that demonstrate and evaluate potential benefits of adopting various methods in conducting string searching on forensic data are given. This research concludes with a final case study which evaluates the performance to perform file carving with the best-proposed string searching solution and compares the result with an existing file carving tool— Foremost. Results: The results demonstrated from the research establish that utilising the parallelised OpenCL and Parallel Failureless Aho-Corasick (PFAC) algorithm solution demonstrates significantly greater processing improvements from the use of a single, and multiple, GPUs on modern hardware. In comparison to CPU approaches, GPGPU processing models were observed to minimised the amount of time required to search for greater amounts of patterns. Results also showed that employing PFAC also delivers significant performance increases over the BM algorithm. The method employed to read data from storage devices was also seen to have a significant effect on the time required to perform string searching and file carving. Conclusions: Empirical testing shows that the proposed string searching method is believed to be more efficient than the widely-adopted Boyer-Moore algorithms when applied to string searching and performing file carving. The developed OpenCL GPGPU processing framework was found to be more efficient than CPU counterparts when searching for greater amounts of patterns within data. This research also refutes claims that file carving is solely limited by the performance of the storage device, and presents compelling evidence that performance is bound by the combination of the performance of the storage device and processing technique employed.
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Legler, Thomas. "Datenzentrierte Bestimmung von Assoziationsregeln in parallelen Datenbankarchitekturen". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-23701.

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Die folgende Arbeit befasst sich mit der Alltagstauglichkeit moderner Massendatenverarbeitung, insbesondere mit dem Problem der Assoziationsregelanalyse. Vorhandene Datenmengen wachsen stark an, aber deren Auswertung ist für ungeübte Anwender schwierig. Daher verzichten Unternehmen auf Informationen, welche prinzipiell vorhanden sind. Assoziationsregeln zeigen in diesen Daten Abhängigkeiten zwischen den Elementen eines Datenbestandes, beispielsweise zwischen verkauften Produkten. Diese Regeln können mit Interessantheitsmaßen versehen werden, welche dem Anwender das Erkennen wichtiger Zusammenhänge ermöglichen. Es werden Ansätze gezeigt, dem Nutzer die Auswertung der Daten zu erleichtern. Das betrifft sowohl die robuste Arbeitsweise der Verfahren als auch die einfache Auswertung der Regeln. Die vorgestellten Algorithmen passen sich dabei an die zu verarbeitenden Daten an, was sie von anderen Verfahren unterscheidet. Assoziationsregelsuchen benötigen die Extraktion häufiger Kombinationen (EHK). Hierfür werden Möglichkeiten gezeigt, Lösungsansätze auf die Eigenschaften moderne System anzupassen. Als Ansatz werden Verfahren zur Berechnung der häufigsten $N$ Kombinationen erläutert, welche anders als bekannte Ansätze leicht konfigurierbar sind. Moderne Systeme rechnen zudem oft verteilt. Diese Rechnerverbünde können große Datenmengen parallel verarbeiten, benötigen jedoch die Vereinigung lokaler Ergebnisse. Für verteilte Top-N-EHK auf realistischen Partitionierungen werden hierfür Ansätze mit verschiedenen Eigenschaften präsentiert. Aus den häufigen Kombinationen werden Assoziationsregeln gebildet, deren Aufbereitung ebenfalls einfach durchführbar sein soll. In der Literatur wurden viele Maße vorgestellt. Je nach den Anforderungen entsprechen sie je einer subjektiven Bewertung, allerdings nicht zwingend der des Anwenders. Hierfür wird untersucht, wie mehrere Interessantheitsmaßen zu einem globalen Maß vereinigt werden können. Dies findet Regeln, welche mehrfach wichtig erschienen. Der Nutzer kann mit den Vorschlägen sein Suchziel eingrenzen. Ein zweiter Ansatz gruppiert Regeln. Dies erfolgt über die Häufigkeiten der Regelelemente, welche die Grundlage von Interessantheitsmaßen bilden. Die Regeln einer solchen Gruppe sind daher bezüglich vieler Interessantheitsmaßen ähnlich und können gemeinsam ausgewertet werden. Dies reduziert den manuellen Aufwand des Nutzers. Diese Arbeit zeigt Möglichkeiten, Assoziationsregelsuchen auf einen breiten Benutzerkreis zu erweitern und neue Anwender zu erreichen. Die Assoziationsregelsuche wird dabei derart vereinfacht, dass sie statt als Spezialanwendung als leicht nutzbares Werkzeug zur Datenanalyse verwendet werden kann
The importance of data mining is widely acknowledged today. Mining for association rules and frequent patterns is a central activity in data mining. Three main strategies are available for such mining: APRIORI , FP-tree-based approaches like FP-GROWTH, and algorithms based on vertical data structures and depth-first mining strategies like ECLAT and CHARM. Unfortunately, most of these algorithms are only moderately suitable for many “real-world” scenarios because their usability and the special characteristics of the data are two aspects of practical association rule mining that require further work. All mining strategies for frequent patterns use a parameter called minimum support to define a minimum occurrence frequency for searched patterns. This parameter cuts down the number of patterns searched to improve the relevance of the results. In complex business scenarios, it can be difficult and expensive to define a suitable value for the minimum support because it depends strongly on the particular datasets. Users are often unable to set this parameter for unknown datasets, and unsuitable minimum-support values can extract millions of frequent patterns and generate enormous runtimes. For this reason, it is not feasible to permit ad-hoc data mining by unskilled users. Such users do not have the knowledge and time to define suitable parameters by trial-and-error procedures. Discussions with users of SAP software have revealed great interest in the results of association-rule mining techniques, but most of these users are unable or unwilling to set very technical parameters. Given such user constraints, several studies have addressed the problem of replacing the minimum-support parameter with more intuitive top-n strategies. We have developed an adaptive mining algorithm to give untrained SAP users a tool to analyze their data easily without the need for elaborate data preparation and parameter determination. Previously implemented approaches of distributed frequent-pattern mining were expensive and time-consuming tasks for specialists. In contrast, we propose a method to accelerate and simplify the mining process by using top-n strategies and relaxing some requirements on the results, such as completeness. Unlike such data approximation techniques as sampling, our algorithm always returns exact frequency counts. The only drawback is that the result set may fail to include some of the patterns up to a specific frequency threshold. Another aspect of real-world datasets is the fact that they are often partitioned for shared-nothing architectures, following business-specific parameters like location, fiscal year, or branch office. Users may also want to conduct mining operations spanning data from different partners, even if the local data from the respective partners cannot be integrated at a single location for data security reasons or due to their large volume. Almost every data mining solution is constrained by the need to hide complexity. As far as possible, the solution should offer a simple user interface that hides technical aspects like data distribution and data preparation. Given that BW Accelerator users have such simplicity and distribution requirements, we have developed an adaptive mining algorithm to give unskilled users a tool to analyze their data easily, without the need for complex data preparation or consolidation. For example, Business Intelligence scenarios often partition large data volumes by fiscal year to enable efficient optimizations for the data used in actual workloads. For most mining queries, more than one data partition is of interest, and therefore, distribution handling that leaves the data unaffected is necessary. The algorithms presented in this paper have been developed to work with data stored in SAP BW. A salient feature of SAP BW Accelerator is that it is implemented as a distributed landscape that sits on top of a large number of shared-nothing blade servers. Its main task is to execute OLAP queries that require fast aggregation of many millions of rows of data. Therefore, the distribution of data over the dedicated storage is optimized for such workloads. Data mining scenarios use the same data from storage, but reporting takes precedence over data mining, and hence, the data cannot be redistributed without massive costs. Distribution by special data semantics or user-defined selections can produce many partitions and very different partition sizes. The handling of such real-world distributions for frequent-pattern mining is an important task, but it conflicts with the requirement of balanced partition
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Wallin, Harald. "An investigation of friction graphs ranking ability regarding the galling phenomenon in dry SOFS contact : (Adhesive material transfere and friction)". Thesis, Karlstad University, Faculty of Technology and Science, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-2790.

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The main purpose of this project is to investigate different tool steels in terms of their ability to withstand material transfer buildup, so-called galling, occurring in SMF (sheet metal forming) operations. The ability to withstand galling is vital to optimize cost-effectiveness and increase the work tool’s effective operational time. This investigation studies four different tool steels, including a TiN-coating, with the intention of evaluating the microstructures, chemical composition and hardness effect on galling resistance in dry conditions using a slider-on-flatsurface (SOFS) tribo-tester which measures the coefficient of friction during sliding.

An OP (optical profilometer) was used to measure the size and geometry of lump growth on the tool and damage on the work sheet. A scanning electron microscope (SEM) was used to identify the interacting tribological mechanisms exhibited at different stages during the slide. The SEM figures confirmed three different types of characteristic patterns exhibited in the tracks after tribo- testing which were categorized as mild adhesive, abrasive and severe adhesive damage.

A SEM figure that illustrates a ragged contact surface and an obvious change in the sheet materials plastic behavior is in this report regarded as a sign of severe adhesive contact, the characteristics could possibly be explained by local high temperature and high pressure followed by a sudden pressure drop and creation of hardened welds or solders between the two surfaces which increase the frictional input needed for further advancement. Friction coefficients observed in the initial 100% mild adhesive stage were, μ=0,22-0,26 succeeded by abrasive SEM characteristics often in association with mild adhesive contact and friction values between μ=0,25-0,4 which where sometimes followed by severe adhesive SEM characteristics in 100% of the contact zone with friction values between μ=0,34- 0,9 respectively. The tool material that performed best according to the friction detection criteria was Sv21 closely followed by Sleipner (TiN coated) and Va40 (HRC 63.3). Unfortunately was the friction criteria, a significant raise in friction for defining a sliding length to galling, not adequate for dry conditions due to immediate material transfer succeeded by cyclic changes between partial or 100% abrasive+mild adhesive and severe adhesive contact. The mechanism that change abrasive wear in association with mild adhesive contact, (moderate friction input), to sever adhesive wear, (higher friction input), is dependent on lump shape (lump geometry) and can appear at comparably low speeds 0,04-0,08 [m/s] and low friction energy input (μ=0,34), the magnitude of the change in friction is therefore not always significant and hardly detectable on the friction graph. This was quite unexpected but could be explained by concentration of friction energy rater than the absolute amount. The problem with using friction graphs for galling evaluation was increased even further when a very small lump size and low corresponding rate of material transfer to the tool surface caused a sustainable high raise in friction (μ≈0,3→0,6) on a TiN-coated tool steel called Sleipner.

A hardly detectable or similar friction raise for Sv21 and Va40 showed much larger corresponding lump size and rate of material transfer. This means that friction graphs demonstrate a clear problem with quantifying lump size [m3] and rate of  material transfer [m3/s]. Another phenomenon called stick slip behavior, material transfer and lump growth followed by a sudden decrease in lump size and transfer of material back to the work sheet, is also not possible to detect on a friction graph. Because a drop in friction can easily be a change in contact temperature and lump attack angle due to a growing lump and not a decreasing lump.

 

The conclusion, a friction graph is not suited for galling evaluation and ranking in dry SOFS conditions. A ranking should primarily be based on dimensional OP measurements of the cross section of formed tracks and scratches or preferably by repeated OP measurements of the tool surface during a single test, the last revel the exact lump growth history and true lump growth even in the sliding direction.

 


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De, Silva Sandun S. "Vibration characteristics of steel-deck composite floor systems under human excitation". Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16538/1/Sandun_De_Silva_Thesis.pdf.

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Steel-deck composite floor systems are being increasingly used in high-rise building construction, especially in Australia, as they are economical and easy to construct. These composite floor systems use high strength materials to achieve longer spans and are thus slender. As a result, they are vulnerable to vibration induced under service loads. These floors are normally designed using static methods which will not reveal the true behaviour and miss the dynamic amplifications resulting in inappropriate designs, which ultimately cause vibration and discomfort to occupants. At present there is no adequate design guidance to address the vibration in these composite floors, due to a lack of research information, resulting in wasteful post event retrofits. To address this gap in knowledge, a comprehensive research project is presented in this thesis, which investigated the dynamic performance of composite floors under various human induced loads. A popular type of composite floor system was selected for this investigation and subjected to load models representing different human activities. These load models have variable parameters such as load intensity, activity type (contact ratio), activity frequency and damping and are applied as pattern loads to capture the maximum responses in terms of deflections and accelerations. Computer models calibrated against experimental results are used in the analysis to generate the required information. The dynamic responses of deflections and accelerations are compared with the serviceability deflection limits and human comfort levels (of accelerations) to assess these floor types. This thesis also treats the use of visco-elastic (VE) dampers to mitigate excessive vibrations in steel-deck composite floors. VE damper properties have been presented and their performances in reducing the excessive vibrations have been assessed this thesis. The results identified possible occupancies under different loading conditions that can be used in planning, design and evaluation. The findings can also be used to plan retrofitting measures in problematic floor systems.
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De, Silva Sandun S. "Vibration characteristics of steel-deck composite floor systems under human excitation". Queensland University of Technology, 2007. http://eprints.qut.edu.au/16538/.

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Steel-deck composite floor systems are being increasingly used in high-rise building construction, especially in Australia, as they are economical and easy to construct. These composite floor systems use high strength materials to achieve longer spans and are thus slender. As a result, they are vulnerable to vibration induced under service loads. These floors are normally designed using static methods which will not reveal the true behaviour and miss the dynamic amplifications resulting in inappropriate designs, which ultimately cause vibration and discomfort to occupants. At present there is no adequate design guidance to address the vibration in these composite floors, due to a lack of research information, resulting in wasteful post event retrofits. To address this gap in knowledge, a comprehensive research project is presented in this thesis, which investigated the dynamic performance of composite floors under various human induced loads. A popular type of composite floor system was selected for this investigation and subjected to load models representing different human activities. These load models have variable parameters such as load intensity, activity type (contact ratio), activity frequency and damping and are applied as pattern loads to capture the maximum responses in terms of deflections and accelerations. Computer models calibrated against experimental results are used in the analysis to generate the required information. The dynamic responses of deflections and accelerations are compared with the serviceability deflection limits and human comfort levels (of accelerations) to assess these floor types. This thesis also treats the use of visco-elastic (VE) dampers to mitigate excessive vibrations in steel-deck composite floors. VE damper properties have been presented and their performances in reducing the excessive vibrations have been assessed this thesis. The results identified possible occupancies under different loading conditions that can be used in planning, design and evaluation. The findings can also be used to plan retrofitting measures in problematic floor systems.
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Chagas, Priscilla Borgonhoni. "Desenvolvimento e dependência no Brasil : reflexos do Programa de Aceleração do Crescimento (PAC) no município do Rio Grande (RS)". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/102305.

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O objetivo desta tese foi compreender como o Programa de Aceleração do Crescimento (PAC), a partir dos investimentos no Polo Naval, solapa a coerência estruturada no município do Rio Grande, no Estado do Rio Grande do Sul. O estudo foi fundamentado na teoria marxista da dependência, especialmente nas discussões de Marini (2005) e mais recentemente de Osorio (2012a; 2012b), acerca da inserção subordinada das economias periféricas no mercado internacional, articulada com os mecanismos de acumulação do capital e de exploração do trabalho e na teoria da ordenação espaço-temporal de Harvey (2004) que permite a compreensão de como o capital produz espaço por meio do solapamento das estruturas que permitem a sua produção e reprodução. Sendo assim, a tese defendida neste trabalho é que o Programa de Aceleração do Crescimento, fundamentado em uma política neodesenvolvimentista, consolida o novo padrão de especialização produtiva no Brasil e altera a coerência estruturada das regiões que recebem investimentos por meio da criação de espaços dinâmicos de acumulação do capital e reafirma a dependência do país no sistema econômico mundial. Foi utilizada a abordagem dialético-materialista e a coleta de dados envolveu pesquisa documental, observação livre e entrevistas semiestruturadas com 34 pessoas pertencentes ao poder público, a sindicatos, a associações comunitárias e à comunidade em geral. A análise dos períodos econômico-produtivos pelos quais Rio Grande passou revela que a acumulação do capital na região é alicerçada na dependência externa e na segregação social. Em todos os períodos é evidente a presença do capital exógeno à cidade, fruto de ordenações espaço-temporais sistêmicas atraídas fundamentalmente pelo porto existente e de intervenções estatais na economia local. Esses processos geraram ciclos de imigração na cidade, uma vez que o capital necessita de força de trabalho para criar uma nova capacidade produtiva. Em todos os períodos também é notável a constatação de que os produtos produzidos no município eram destinados fundamentalmente para a exportação, o que o deixou ainda mais vulnerável a crises internacionais e causaram enormes prejuízos sociais quando entraram em declínio. Essas condições também são reproduzidas no último período econômico-produtivo analisado: a implementação do Polo Naval a partir dos investimentos do PAC. Este Programa, ao mesmo tempo em que norteia os planos estratégicos de desenvolvimento conduzidos pelo Governo Federal, é provocador do novo padrão exportador de especialização produtiva no Brasil e revisita sob uma nova roupagem os sinais da lógica da dependência, ao dar forma a uma contraditória composição entre autonomia nacional para o enfrentamento das desigualdades, com adequações ao sistema econômico mundial. Essas contradições, originadas nas disputas pelo projeto de nação, desenham as ações e prioridades de investimentos inscritos no Programa e evidenciam o modo de inserção do Brasil no sistema econômico mundial. Por estas razões, a teoria marxista da dependência mostra sua potência para interpretar uma política pública, configurada pelas leis de funcionamento do capital e pelo papel subsidiário que nele é destinado aos países periféricos da América Latina, e que o novo desenvolvimentismo não altera.
The aim of this thesis was to understand how the Growth Acceleration Program (PAC) from investments in Naval Pole, undermines the structured coherence in the city of Rio Grande, in Rio Grande do Sul. The study was based on marxist theory of dependency especially in discussions of Marini (2005) and more recently Osorio (2012a, 2012b), about the subordinate position of peripheral economies in the international market, combined with the mechanisms of accumulation of capital and labor exploitation and the theory of spatial-temporal ordering of Harvey (2004) that allows the understanding of how capital produces space through undermining the structures that enable its production and reproduction. Therefore, the argument of this thesis is that the Growth Acceleration Program, based on a new developmentalism policy, consolidates the new pattern of productive specialization in Brazil and alters the structured coherence of the regions that receive investments by creating dynamic spaces of capital accumulation and reaffirms the country‘s dependence on the world economic system. The dialectical-materialist approach were used and data collection involved documental research, free observation and semi-structured interviews with 34 people belonging to the government, labor unions, the community associations and the community in general. The analysis of the economic-productive periods for which Rio Grande went reveals that the accumulation of capital in the region is rooted in external dependence and social segregation. In all periods it is evident the presence of exogenous capital to the city, the result of ordinations spatiotemporal systemic attracted primarily by the existing port and government intervention on the local economy. These processes generate cycles of immigration in the city, once the capital needs of the workforce to create a new productive capacity. In all periods is also noteworthy to observe that the products produced in the city were intended primarily for export, which made him even more vulnerable to international crises and caused enormous social damage when went into decline. These conditions also reproduced in the final economic-productive period analyzed: the implementation of Naval Pole from the PAC investments. This program, while guiding the strategic development plans conducted by the Federal Government, is the provocative newcomer pattern of productive specialization in Brazil and revisits under a new guise signs of logical dependence, to form a composition contradictory between national autonomy for addressing inequalities, with adaptations to the world economic system. These contradictions, disputes arising in the project of nation, drawing the actions and priorities of investments included in the program and show the way of Brazil's insertion in the global economic system. For these reasons, the marxist theory of dependency shows its power to interpret a policy configured for the proper functioning of capital and the subsidiary role it is intended that the peripheral countries of Latin America, and the new developmentalism does not change.
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Książki na temat "Acceleration patterns"

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Rubtsov, Nickolai, Mikhail Alymov, Alexander Kalinin, Alexey Vinogradov, Alexey Rodionov i Kirill Troshin. Remote studies of combustion and explosion processes based on optoelectronic methods. au: AUS PUBLISHERS, 2022. http://dx.doi.org/10.26526/monography_62876066a124d8.04785158.

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The main objective of this book is to acquaint the reader with the main modern problems of the multisensor data analysis and opportunities of the hyperspectral shooting being carried out in the wide range of wavelengths from ultraviolet to the infrared range, visualization of the fast combustion processes of flame propagation and flame acceleration, the limit phenomena at flame ignition and propagation. The book can be useful to students of the high courses and scientists dealing with problems of optical spectroscopy, vizualisation, digital recognizing images and gaseous combustion. The main goal of this book is to bring to the attention of the reader the main modern problems of multisensory data analysis and the possibilities of hyperspectral imaging, carried out in a broad wave-length range from ultraviolet to infrared by methods of visualizing fast combustion processes, propagation and flames acceleration, and limiting phenomena during ignition and flame propagation. The book can be useful for students of higher courses and experimental scientists dealing with problems of optical spectroscopy, visualization, pattern recognition and gas combustion.
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Kelsall, Tim, i Heng Seiha. Not Minding the Gap. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198801641.003.0005.

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This chapter analyses patterns of growth in Cambodia. Over the past forty years, Cambodia has had one of the world’s most volatile growth experiences. A prolonged economic collapse between 1970 and 1982 was followed by a gradual but unstable recovery up until 1998, while post-1998 saw another growth acceleration and sustained high growth. While growth collapse can be traced to the failure of Prince Sihanouk’s post-independence political settlement, war, and the disastrous Khmer Rouge regime, growth acceleration and maintenance has been based on a political settlement which has created a balance between technocrats and rent-seekers within Hun Sen’s dominant coalition. Technocrats are given just enough latitude to support growth industries, while rent-seekers are given the political backing to generate profits, a proportion of which are funnelled to the masses through ruling party patronage projects.
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Said, Jonathan, i Khwima Singini. Powerbrokers and Patronage. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198801641.003.0003.

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This chapter investigates the patterns of growth in Malawi from 1954 to 2013. Using the deals and development framework, it highlights four growth regimes during this period. First, a period of growth stagnation under colonial rule. Second, a period of growth acceleration post-independence as a clientelist structure emerged in key sectors of the economy under president Banda. Third, from 1978 onwards the lack of sustainability of these structures led to a period of growth decline. In 1994 Malawi transitioned to multiparty elections, however the country failed to modernize and the systems of patronage were further entrenched. Fourth, from 2003 the country has seen weak growth acceleration. However, the country has failed to transform how the economy is organized, meaning that many of the structures remain in place. An overreliance on powerbrokers and rentiers within the economy has meant that the structural changes needed to improve living standards within the country remain elusive.
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Hosseinabady, Mohammad. Structured Accelerator Design: Patterns for High-Level Synthesis. River Publishers, 2021.

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Hosseinabady, Mohammad. Structured Accelerator Design: Patterns for High-Level Synthesis. River Publishers, 2021.

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Parncutt, Richard. Prenatal development and the phylogeny and ontogeny of music. Redaktorzy Susan Hallam, Ian Cross i Michael Thaut. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780199298457.013.0020.

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This article focuses on musically relevant psychological aspects of prenatal development: the development of perception, cognition, and emotion; the relationships between them; and the musical and musicological implications of those relationships. It begins by surveying relevant foetal sensory abilities: hearing, the vestibular sense of balance and acceleration, and the proprioceptive sense of body orientation and movement. All those senses are relevant for musical development, since in all known cultures music is inseparable from bodily movement and gesture, whether real or implied. The article then considers what sounds and other stimuli are available to the foetus: what patterns are the earliest to be perceptually learnt? It examines psychological and philosophical issues of foetal attention, ‘consciousness’, learning, and memory. The article closes with speculations about the possible role of prenatal development in the phylogeny of musical behaviours.
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Apostolico, Alberto, i Zvi Galil, red. Pattern Matching Algorithms. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195113679.001.0001.

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Issues of matching and searching on elementary discrete structures arise pervasively in computer science and many of its applications, and their relevance is expected to grow as information is amassed and shared at an accelerating pace. Several algorithms were discovered as a result of these needs, which in turn created the subfield of Pattern Matching. This book provides an overview of the current state of Pattern Matching as seen by specialists who have devoted years of study to the field. It covers most of the basic principles and presents material advanced enough to faithfully portray the current frontier of research. Because of these recent advances, this is the right time for a book that brings together information relevant to both graduate students and specialists in need of an in-depth reference.
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Doyle, Shane. Demography and Disease. Redaktorzy John Parker i Richard Reid. Oxford University Press, 2013. http://dx.doi.org/10.1093/oxfordhb/9780199572472.013.0002.

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This chapter discusses the literature relating to demography and disease in Africa. It evaluates the impact on patterns of morbidity and mortality of Africa’s accelerating integration into globalized trading networks in the nineteenth century, and subsequently of its conquest by European empires. The debate about the role played by colonial rule in stimulating Africa’s shift from historic underpopulation towards extremely rapid growth forms the heart of the chapter. The later sections consider competing theories which seek to explain the distinctiveness of fertility decline within Africa and the literature which has tried to evaluate and explain the demographic impact of Africa’s HIV pandemic.
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Dalton, Russell J. Political Realignment. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198830986.001.0001.

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The pace of electoral change is accelerating in contemporary democracies. This study explains why. Green parties, far right parties, and shifting voting patterns reflect deeper processes of electoral realignment. This book tracks the evolution of citizen and party elite opinions on economic and cultural issues from the 1970s to the 2010s—and the impact of these opinions on electoral politics. Economic issues remain important predictors of vote, but are now matched by cultural issues. An unprecedented time series of empirical evidence from Europe and the United States shows how these changes have reshaped party systems, and the policy linkages between voters and parties.
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Hassan, Mirza, i Selim Raihan. Navigating the Deals World. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198801641.003.0004.

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This chapter shows how elite political settlements over time have influenced economic growth in Bangladesh. More concretely, the chapter focuses on the analysis of economic, institutional, and political economy conditions behind structural breaks in economic growth, phases of growth acceleration, and transitions in growth regimes in Bangladesh. This involves analysis of the pattern of structural change in the economy, mapping of the rent generation and rent allocations process in different sectors, discussions on the institutional space (i.e. delineation of the nature of formal and informal institutions that tend to affect a firm’s behaviour), and analysis of the deals environment of the business. The chapter also explores the incentives and ideology/vision of the political, state, and economic elites, the nature of state–business relations, and the influence of de facto growth coalitions to explain the dynamics of current trends and future prospects for growth in Bangladesh.
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Części książek na temat "Acceleration patterns"

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Sassi, Federico, Luca Ascari i Stefano Cagnoni. "Classifying Human Body Acceleration Patterns Using a Hierarchical Temporal Memory". W AI*IA 2009: Emergent Perspectives in Artificial Intelligence, 496–505. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-10291-2_50.

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Reames, Donald V. "Hydrogen Abundances and Shock Waves". W Solar Energetic Particles, 187–219. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66402-2_9.

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AbstractHow well do protons fit into the abundance patterns of the other elements? Protons have Q = 1 and A/Q = 1 at all temperatures of interest. When does their relative abundance fit on the power law in A/Q defined by the elements with A/Q > 2? For small “pure” impulsive events, protons fit well, but for larger CME-associated impulsive events, where shock waves boost the intensities, protons are enhanced a factor of order ten by addition of seed protons from the ambient plasma. During most large gradual SEP events with strong shock waves, protons again fit the power law, but with weaker or quasi-perpendicular shock waves, dominated by residual impulsive seed particle abundances at high Z, again protons are enhanced. Proton enhancements occur when moderately weak shock waves happen to sample a two-component seed population with dominant protons from the ambient coronal plasma and impulsive suprathermal ions at high Z; thus proton-enhanced events are a surprising new signature of shock acceleration in jets. A/Q measures the rigidity dependence of both acceleration and transport but does not help us distinguish the two. Energy-spectral indices and abundances are correlated for most gradual events but not when impulsive ions are present; thus we end with powerful new correlations that probe both acceleration and transport.
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Reames, Donald V. "Element Abundances and FIP: SEPs, Corona, and Solar Wind". W Solar Energetic Particles, 167–85. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66402-2_8.

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AbstractWe have used abundance measurements to identify the sources and the physical processes of acceleration and transport of SEPs. Here we study energetic particles themselves as samples of the solar corona that is their origin, distinguishing the corona from the photosphere and the SEPs from the solar wind. Theoretically, differences in the first ionization potential “FIP effect” may distinguish closed- and open-field regions at the base of the corona, which may also distinguish SEPs from the solar wind. There is not a single coronal FIP effect, but two patterns, maybe three. Are there variations? What about He?
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Reames, Donald V. "Gradual SEP Events". W Solar Energetic Particles, 97–133. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66402-2_5.

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AbstractGradual solar energetic-particle (SEP) events are “big proton events” and are usually much more “gradual” in their decay than in their onset. As their intensities increase, particles streaming away from the shock amplify Alfvén waves that scatter subsequent particles, increasing their acceleration, eventually limiting ion flow at the “streaming limit.” Waves generated by higher-speed protons running ahead can also throttle the flow of lower-energy ions, flattening spectra and altering abundances in the biggest SEP events. Thus, we find that the A/Q-dependence of scattering causes element-abundance patterns varying in space and time, which define source-plasma temperatures T, since the pattern of Q values of the ions depends upon temperature. Differences in T explain much of the variation of element abundances in gradual SEP events. In nearly 70% of gradual events, SEPs are shock-accelerated from ambient coronal plasma of ~0.8–1.6 MK, while 24% of the events involve material with T ≈ 2–4 MK re-accelerated from residual impulsive-suprathermal ions with pre-enhanced abundances. This source-plasma temperature can occasionally vary with solar longitude across the face of a shock. Non-thermal variations in ion abundances in gradual SEP events reaccelerated from the 2–4 MK impulsive source plasma are reduced, relative to those in the original impulsive SEPs, probably because the accelerating shock waves sample a pool of ions from multiple jet sources. Late in gradual events, SEPs become magnetically trapped in a reservoir behind the CME where spectra are uniform in space and decrease adiabatically in time as the magnetic bottle containing them slowly expands. Finally, we find variations of the He/O abundance ratio in the source plasma of different events.
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Pérez, M. Claudia, Miquel Casamitjana i Enric X. Martín. "Space Carving Acceleration Using Uncertainty Measurements". W Pattern Recognition and Image Analysis, 112–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02172-5_16.

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Zhang, Huiliang, Bertil Schmidt i Wolfgang Müller-Wittig. "Accelerating BLASTP on the Cell Broadband Engine". W Pattern Recognition in Bioinformatics, 460–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-88436-1_39.

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Pham, Nguyen-Khang, Annie Morin i Patrick Gros. "Accelerating Image Retrieval Using Factorial Correspondence Analysis on GPU". W Computer Analysis of Images and Patterns, 565–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03767-2_69.

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Singapura, Shreyas G., Yi-Hua E. Yang, Anand Panangadan, Tamas Nemeth, Peter Ng i Viktor K. Prasanna. "FPGA-Based Acceleration of Pattern Matching in YARA". W Lecture Notes in Computer Science, 320–27. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30481-6_26.

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Kim, Sunil. "Pattern Matching Acceleration for Network Intrusion Detection Systems". W Lecture Notes in Computer Science, 289–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11512622_31.

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Bustio-Martínez, Lázaro, René Cumplido, José Hernández-Palancar i Claudia Feregrino-Uribe. "On the Design of a Hardware-Software Architecture for Acceleration of SVM’s Training Phase". W Advances in Pattern Recognition, 281–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15992-3_30.

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Streszczenia konferencji na temat "Acceleration patterns"

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Gradl, Stefan, Markus Zrenner, Dominik Schuldhaus, Markus Wirth, Tomek Cegielny, Constantin Zwick i Bjoern M. Eskofier. "Movement Speed Estimation Based on Foot Acceleration Patterns". W 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2018. http://dx.doi.org/10.1109/embc.2018.8513042.

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Rong, Liu, Duan Zhiguo, Zhou Jianzhong i Liu Ming. "Identification of Individual Walking Patterns Using Gait Acceleration". W 2007 1st International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2007. http://dx.doi.org/10.1109/icbbe.2007.142.

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Du, Shufang, Longjiang Guo, Chunyu Ai, Jinbao Li, Meirui Ren i Yahong Guo. "GPU acceleration of finding frequent patterns over large biological sequence". W 2014 20th IEEE International Conference on Parallel and Distributed Systems (ICPADS). IEEE, 2014. http://dx.doi.org/10.1109/padsw.2014.7097865.

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de Souza, M., D. D. B. Carvalho, P. Barth, J. V. Ramos, E. Comunello i A. von Wangenheim. "Using Acceleration Data from Smartphones to Interact with 3D Medical Data". W 2010 23rd SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI 2010). IEEE, 2010. http://dx.doi.org/10.1109/sibgrapi.2010.52.

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Howcroft, Jennifer, Bruce Wallace, Rafik Goubran, Shawn Marshall, Michelle M. Porter i Frank Knoefel. "Variation in acceleration driving patterns as a measure of older adult health status". W 2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2017. http://dx.doi.org/10.1109/memea.2017.7985892.

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Zvegintsev, V. I., i A. Yu Melnikov. "Change of flow patterns in a supersonic inlet during its acceleration and deceleration". W HIGH-ENERGY PROCESSES IN CONDENSED MATTER (HEPCM 2020): Proceedings of the XXVII Conference on High-Energy Processes in Condensed Matter, dedicated to the 90th anniversary of the birth of RI Soloukhin. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0028385.

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Lampérth, Michael U., i Keith R. Pullen. "How Size and Performance of Hybrid Electric Vehicle Components are Influenced by Acceleration Patterns". W Future Transportation Technology Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-2909.

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Vyas, Nalinaksh S. "Pseudo Static Excitation of Turbine Blades Under Acceleration". W ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0515.

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Abstract Coriolis forces, on a blade mounted on a disc rotating with angular acceleration, give rise to a pseudo static excitation to the blade. The resulting vibrations are simultaneously influenced by the changing stiffness of the blade under acceleration. The occurrence of this shock phenomenon has been reported in earlier studies for uniform beams. In this paper the phenomenon is investigated for a typical tapered, pretwisted, turbine lade with an asymmetric aerofoil cross section and mounted on the disc at a stagger angle. The governing equations of motion, for uniform rates of acceleration are derived employing Lagrangian equations. The vibration response patterns of the blade, obtained numerically, for typical acceleration rates are illustrated.
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Maslov, V. I., A. M. Egorov, I. N. Onishchenko, Giuseppe Bertin, Franca De Luca, Giuseppe Lodato, Roberto Pozzoli i Massimiliano Romé. "Role of Plasma Electron Vortex Formation at Laser Interaction with Foil for Ion Acceleration". W PLASMAS IN THE LABORATORY AND THE UNIVERSE: Interactions, Patterns, and Turbulence. AIP, 2010. http://dx.doi.org/10.1063/1.3460146.

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Ortiz-Vidal, Luis Enrique, Oscar M. H. Rodriguez i Njuki Mureithi. "An Exploratory Experimental Technique to Predict Two-Phase Flow Pattern From Vibration Response". W ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-98115.

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Gas-liquid pipe flow is common in nuclear, gas & oil, refrigeration and power generation industries, where gas-liquid mixtures are transported in piping systems. The mixtures flows in different flow patterns, such as bubbly, slug and annular, generating dynamic fluid forces which may induce structural vibration. In many industrial cases, Flow-Induced Vibrations (FIV) are an intrinsic part of the piping operation and does not present risks that may lead to structural component failures. In this sense, the information available on this topic is quite scanty. In this paper, we present an in-depth discussion about the phenomenology of the FIV due to two-phase pipe flow. A set of 32 two-phase horizontal flow conditions was collected, including bubbly, slug and dispersed flow-patterns. The homogeneous mixture velocity J was in the range of 0.5 to 25 m/s, with homogeneous void fractions of β = 10%, 25%, 50%, 75% and 95%. Signals of acceleration were acquired to correlate pipe vibration and two-phase flow parameters. Results show higher acceleration levels in slug and dispersed than in bubbly flow. We find that the acceleration frequency response contains useful information of the flow. Comparisons with single-phase flow are also presented. Finally, an exploratory experimental technique to predict two-phase flow pattern from vibration response based on the combination resonance caused by both single and two-phase flow is proposed. The results indicate that the proposed-technique is acceptable to recognize intermittent flow patterns in two-phase flow.
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Raporty organizacyjne na temat "Acceleration patterns"

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Wolfe, S. A., H. B. O'Neill, C. Duchesne, D. Froese, J M Young i S. V. Kokelj. Ground ice degradation and thermokarst terrain formation in Canada over the past 16 000 years. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329668.

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Thermokarst results from thawing of excess ground ice in permafrost sediments. Thermokarst processes and landforms are controlled by ground ice type, amount and distribution, as well as the patterns of ground ice loss over time. Recent acceleration of varied thermokarst processes across diverse Canadian permafrost terrains make for a challenging task in predicting landscape-scale thaw trajectories. Using existing ground ice models, we examined the modelled amounts and spatial extent of ground ice loss relative to ground ice maxima in the last ca. 16 ka BP for relict, segregated and wedge ice. We relate observed thermokarst features to the nature of ground ice development and loss in different environments (cold continuous permafrost, discontinuous permafrost, and no current permafrost). In cold, continuous permafrost areas where ground ice loss has been limited over the last 16 ka BP, thermokarst processes include active layer detachments and slumps in segregated and relict ice, gullying and ponding in ice wedge troughs, and the cyclical development of shallow thermokarst ponds in segregated ice. With ground ice loss in discontinuous permafrost, thermokarst processes are wide-ranging. Slumps, subsidence, and collapse of lithalsas, palsas and peat plateaus occur from thawing of segregated ice, thermokarst ponds from melting wedge and segregated ice, and involuted terrain from melting and creep of relict or segregated ice. In former permafrost terrain, evidence of thermokarst includes former ice wedge polygons, collapsed lithalsas, and irregular hummocky terrain. The relations between modelled ground ice loss and observed thermokarst landscapes assist in understanding present-day processes and in predicting future thermokarst landform evolution with a changing climate.
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Cordes, Gail Adele, Leo Anthony Van Ausdeln i Maria Elena Velasquez. Using Patterns for Multivariate Monitoring and Feedback Control of Linear Accelerator Performance: Proof-of-Concept Research. Office of Scientific and Technical Information (OSTI), kwiecień 2002. http://dx.doi.org/10.2172/911200.

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Cai, Yunhai. Build up of Electron Cloud in the PEP-II Particle Accelerator in the Presence of a Solenoid Field and with Different Bunch Pattern. Office of Scientific and Technical Information (OSTI), wrzesień 2003. http://dx.doi.org/10.2172/815615.

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Tao, Yang, Amos Mizrach, Victor Alchanatis, Nachshon Shamir i Tom Porter. Automated imaging broiler chicksexing for gender-specific and efficient production. United States Department of Agriculture, grudzień 2014. http://dx.doi.org/10.32747/2014.7594391.bard.

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Extending the previous two years of research results (Mizarch, et al, 2012, Tao, 2011, 2012), the third year’s efforts in both Maryland and Israel were directed towards the engineering of the system. The activities included the robust chick handling and its conveyor system development, optical system improvement, online dynamic motion imaging of chicks, multi-image sequence optimal feather extraction and detection, and pattern recognition. Mechanical System Engineering The third model of the mechanical chick handling system with high-speed imaging system was built as shown in Fig. 1. This system has the improved chick holding cups and motion mechanisms that enable chicks to open wings through the view section. The mechanical system has achieved the speed of 4 chicks per second which exceeds the design specs of 3 chicks per second. In the center of the conveyor, a high-speed camera with UV sensitive optical system, shown in Fig.2, was installed that captures chick images at multiple frames (45 images and system selectable) when the chick passing through the view area. Through intensive discussions and efforts, the PIs of Maryland and ARO have created the protocol of joint hardware and software that uses sequential images of chick in its fall motion to capture opening wings and extract the optimal opening positions. This approached enables the reliable feather feature extraction in dynamic motion and pattern recognition. Improving of Chick Wing Deployment The mechanical system for chick conveying and especially the section that cause chicks to deploy their wings wide open under the fast video camera and the UV light was investigated along the third study year. As a natural behavior, chicks tend to deploy their wings as a mean of balancing their body when a sudden change in the vertical movement was applied. In the latest two years, this was achieved by causing the chicks to move in a free fall, in the earth gravity (g) along short vertical distance. The chicks have always tended to deploy their wing but not always in wide horizontal open situation. Such position is requested in order to get successful image under the video camera. Besides, the cells with checks bumped suddenly at the end of the free falling path. That caused the chicks legs to collapse inside the cells and the image of wing become bluer. For improving the movement and preventing the chick legs from collapsing, a slowing down mechanism was design and tested. This was done by installing of plastic block, that was printed in a predesign variable slope (Fig. 3) at the end of the path of falling cells (Fig.4). The cells are moving down in variable velocity according the block slope and achieve zero velocity at the end of the path. The slop was design in a way that the deacceleration become 0.8g instead the free fall gravity (g) without presence of the block. The tests showed better deployment and wider chick's wing opening as well as better balance along the movement. Design of additional sizes of block slops is under investigation. Slops that create accelerations of 0.7g, 0.9g, and variable accelerations are designed for improving movement path and images.
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Wideman, Jr., Robert F., Nicholas B. Anthony, Avigdor Cahaner, Alan Shlosberg, Michel Bellaiche i William B. Roush. Integrated Approach to Evaluating Inherited Predictors of Resistance to Pulmonary Hypertension Syndrome (Ascites) in Fast Growing Broiler Chickens. United States Department of Agriculture, grudzień 2000. http://dx.doi.org/10.32747/2000.7575287.bard.

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Background PHS (pulmonary hypertension syndrome, ascites syndrome) is a serious cause of loss in the broiler industry, and is a prime example of an undesirable side effect of successful genetic development that may be deleteriously manifested by factors in the environment of growing broilers. Basically, continuous and pinpointed selection for rapid growth in broilers has led to higher oxygen demand and consequently to more frequent manifestation of an inherent potential cardiopulmonary incapability to sufficiently oxygenate the arterial blood. The multifaceted causes and modifiers of PHS make research into finding solutions to the syndrome a complex and multi threaded challenge. This research used several directions to better understand the development of PHS and to probe possible means of achieving a goal of monitoring and increasing resistance to the syndrome. Research Objectives (1) To evaluate the growth dynamics of individuals within breeding stocks and their correlation with individual susceptibility or resistance to PHS; (2) To compile data on diagnostic indices found in this work to be predictive for PHS, during exposure to experimental protocols known to trigger PHS; (3) To conduct detailed physiological evaluations of cardiopulmonary function in broilers; (4) To compile data on growth dynamics and other diagnostic indices in existing lines selected for susceptibility or resistance to PHS; (5) To integrate growth dynamics and other diagnostic data within appropriate statistical procedures to provide geneticists with predictive indices that characterize resistance or susceptibility to PHS. Revisions In the first year, the US team acquired the costly Peckode weigh platform / individual bird I.D. system that was to provide the continuous (several times each day), automated weighing of birds, for a comprehensive monitoring of growth dynamics. However, data generated were found to be inaccurate and irreproducible, so making its use implausible. Henceforth, weighing was manual, this highly labor intensive work precluding some of the original objectives of using such a strategy of growth dynamics in selection procedures involving thousands of birds. Major conclusions, solutions, achievements 1. Healthy broilers were found to have greater oscillations in growth velocity and acceleration than PHS susceptible birds. This proved the scientific validity of our original hypothesis that such differences occur. 2. Growth rate in the first week is higher in PHS-susceptible than in PHS-resistant chicks. Artificial neural network accurately distinguished differences between the two groups based on growth patterns in this period. 3. In the US, the unilateral pulmonary occlusion technique was used in collaboration with a major broiler breeding company to create a commercial broiler line that is highly resistant to PHS induced by fast growth and low ambient temperatures. 4. In Israel, lines were obtained by genetic selection on PHS mortality after cold exposure in a dam-line population comprising of 85 sire families. The wide range of PHS incidence per family (0-50%), high heritability (about 0.6), and the results in cold challenged progeny, suggested a highly effective and relatively easy means for selection for PHS resistance 5. The best minimally-invasive diagnostic indices for prediction of PHS resistance were found to be oximetry, hematocrit values, heart rate and electrocardiographic (ECG) lead II waves. Some differences in results were found between the US and Israeli teams, probably reflecting genetic differences in the broiler strains used in the two countries. For instance the US team found the S wave amplitude to predict PHS susceptibility well, whereas the Israeli team found the P wave amplitude to be a better valid predictor. 6. Comprehensive physiological studies further increased knowledge on the development of PHS cardiopulmonary characteristics of pre-ascitic birds, pulmonary arterial wedge pressures, hypotension/kidney response, pulmonary hemodynamic responses to vasoactive mediators were all examined in depth. Implications, scientific and agricultural Substantial progress has been made in understanding the genetic and environmental factors involved in PHS, and their interaction. The two teams each successfully developed different selection programs, by surgical means and by divergent selection under cold challenge. Monitoring of the progress and success of the programs was done be using the in-depth estimations that this research engendered on the reliability and value of non-invasive predictive parameters. These findings helped corroborate the validity of practical means to improve PHT resistance by research-based programs of selection.
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Dubcovsky, Jorge, Tzion Fahima i Ann Blechl. Molecular characterization and deployment of the high-temperature adult plant stripe rust resistance gene Yr36 from wheat. United States Department of Agriculture, listopad 2013. http://dx.doi.org/10.32747/2013.7699860.bard.

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Stripe rust, caused by Puccinia striiformis f. sp. tritici is one of the most destructive fungal diseases of wheat. Virulent races that appeared within the last decade caused drastic cuts in yields. The incorporation of genetic resistance against this pathogen is the most cost-effective and environmentally friendly solution to this problem. However, race specific seedling resistance genes provide only a temporary solution because fungal populations rapidly evolve to overcome this type of resistance. In contrast, high temperature adult plant (HTAP) resistance genes provide a broad spectrum resistance that is partial and more durable. The cloning of the first wheat HTAP stripe rust resistance gene Yr36 (Science 2009, 323:1357), funded by our previous (2007-2010) BARD grant, provided us for the first time with an entry point for understanding the mechanism of broad spectrum resistance. Two paralogous copies of this gene are tightly linked at the Yr36 locus (WKS1 and WKS2). The main objectives of the current study were to characterize the Yr36 (WKS) resistance mechanism and to identify and characterize alternative WKSgenes in wheat and wild relatives. We report here that the protein coded by Yr36, designated WKS1, that has a novel architecture with a functional kinase and a lipid binding START domain, is localized to chloroplast. Our results suggest that the presence of the START domain may affect the kinase activity. We have found that the WKS1 was over-expressed on leaf necrosis in wheat transgenic plants. When the isolated WKS1.1 splice variant transcript was transformed into susceptible wheat it conferred resistance to stripe rust, but the truncated variant WKS1.2 did not confer resistance. WKS1.1 and WKS1.2 showed different lipid binding profiling. WKS1.1 enters the chloroplast membrane, while WKS1.2 is only attached outside of the chloroplast membrane. The ascorbate peroxidase (APX) activity of the recombinant protein of TmtAPXwas found to be reduced by WKS1.1 protein in vitro. The WKS1.1 mature protein in the chloroplast is able to phosphorylate TmtAPXprotein in vivo. WKS1.1 induced cell death by suppressing APX activity and reducing the ability of the cell to detoxify reactive oxygen. The decrease of APX activity reduces the ability of the plant to detoxify the reactive H2O2 and is the possible mechanism underlying the accelerated cell death observed in the transgenic plants overexpressing WKS1.1 and in the regions surrounding a stripe rust infection in the wheat plants carrying the natural WKS1.1 gene. WKS2 is a nonfunctional paralog of WKS1 in wild emmer wheat, probably due to a retrotransposon insertion close to the alternative splicing site. In some other wild relatives of wheat, such as Aegilops comosa, there is only one copy of this gene, highly similar to WKS2, which is lucking the retrotransposon insertion. WKS2 gene present in wheat and WKS2-Ae from A. showed a different pattern of alternative splice variants, regardless of the presence of the retrotransposon insertion. Susceptible Bobwhite transformed with WKS2-Ae (without retrotansposon insertion in intron10), which derived from Aegilops comosaconferred resistance to stripe rust in wheat. The expression of WKS2-Ae in transgenic plants is up-regulated by temperature and pathogen infection. Combination of WKS1 and WKS2-Ae shows improved stripe rust resistance in WKS1×WKS2-Ae F1 hybrid plants. The obtained results show that WKS1 protein is accelerating programmed cell death observed in the regions surrounding a stripe rust infection in the wheat plants carrying the natural or transgenic WKS1 gene. Furthermore, characterization of the epistatic interactions of Yr36 and Yr18 demonstrated that these two genes have additive effects and can therefore be combined to increase partial resistance to this devastating pathogen of wheat. These achievements may have a broad impact on wheat breeding efforts attempting to protect wheat yields against one of the most devastating wheat pathogen.
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Volunteer Kinematics and Reaction in Lateral Emergency Maneuver Tests. SAE International, listopad 2013. http://dx.doi.org/10.4271/2013-22-0013.

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It is important to understand human kinematics and muscle activation patterns in emergency maneuvers for the design of safety systems and for the further development of human models. The objective of this study was to quantify kinematic behavior and muscle activation in simulated steering tests in several realistic conditions. In total 108 tests were performed with 10 volunteers undergoing purely lateral maneuvers at 5 m/s2 deceleration or simulated lane change maneuvers at 5 m/s2 peak acceleration and peak yaw velocity of 25 °/s. Test subjects were seated on a rigid seat and restrained by a 4-point belt with retractor. Driver subjects were instructed to be relaxed or braced and to hold the steering wheel while passenger subjects were instructed to put their hands on their thighs. Subjects were instrumented with photo markers that were tracked with 3D high-speed stereo cameras and with electromyography (EMG) electrodes on 8 muscles. Corridors of head displacement, pitch and roll and displacement of T1, shoulder, elbow, hand and knee were created representing mean response and standard deviation of all subjects. In lane change tests for the passenger configuration significant differences were observed in mean peak of head left lateral displacement between the relaxed and the braced volunteers, i.e. 171 mm (σ=58, n=21) versus 121 mm (σ=46, n=17), respectively. Sitting in a relaxed position led to significantly lower muscle activity of the neck muscles. It was concluded that significantly more upper body motion and lower muscle activity was observed for relaxed subjects than for braced subjects.
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