buffering and real time data processing

... scheduling and management tool  Kafka and Flink: Real-time event and streaming data processing tools With this system, I can process big data, store and query data in real time, visualize data, and ... with real-time data processing capabilities  ClickHouse: Column-based high-performance analytical database that supports real-time data querying  Superset: Data visualization and report generation ... big data processing and complex analytics on distributed systems  Parquet: High-performance data storage format, suitable for working with large data  Postgres: Relational database with real-time

Ngày tải lên: 28/02/2025, 22:52

... operates on a data stream in real time, where Hadoop usuallyrelies on aggregation of data over a longer time frame, either hours or days, and thenperforming batch processing on that data Stream ... the same time, the tracking ser‐vice was too fragile to use for metrics, and the batch-oriented processing was not theright model for real-time monitoring and alerting However, the data shared ... would provide real-time access to the data and scale out tohandle the amount of message traffic needed Prototype systems were set up withActiveMQ, but at the time it could not handle the scale

Ngày tải lên: 17/04/2017, 15:43

... sequencing data, but not detected by real-time PCR (Table 1) Seven out of these 9 miRNAs had very low sequencing frequency, and their expression can-not be confidently confirmed until the sequencing data ... (miR159a and miR159b) have been sequenced more than 5,000 times in mature pollen Since the expression of these two miRNAs was not detected by either real-time PCR or regular RT-PCR (Table 1 and Figure ... of each primers (900 nM), 1 μl Taqman probe (250 nM), and 1.5 μl cDNA sample All real-time PCR reactions were performed in a StepOne real-time PCR machine (Applied Biosystems, Foster City, CA)

Ngày tải lên: 12/08/2014, 03:20

... analyzed, and utilized tomodel specific medical procedures Figure 1.5 shows examples of a volume-renderedand a surface-rendered torso of a patient Producing realistic data models and providing real-time ... manipulation and real-time medical procedure simula-tion are still difficult for volumetric medical data One approach to circumvent theseconstraints is to faithfully transform the volumetric image data ... 412.6 Reconstructions Using Real X-Ray Image Data 45 2.6.1 The X-Ray Imaging System 45 2.6.2 The Reconstruction Process and Results 48 2.7 Conclusion 48 3 REAL-TIME DEFORMATION MODELING

Ngày tải lên: 13/11/2014, 16:25

... monitoring requiresin-line sensors and real-time algorithms to facilitate real-time analysis of sensorsignals [14] Therefore, in order to implement real-time CD monitoring and con-trol effectively, we ... measured and referencespectrums is proposed for real-time monitoring and control Result shows CD non-uniformity can be significantly reduced to less than 10nm With this system, real-time monitoring and ... equipment and each step has the possibility toinduce some kind of error or defect and therefore stringent process monitoring andcontrol along the line is required for real-time fault detection and

Ngày tải lên: 09/09/2015, 18:50

... definition of real-time systems Discrete-time semantics [11]requires that all time readings are integers and all clocks increment their readings at the same time.The other choice is dense-time semantics ... concurrent and real-time systems verifica-In ular, we have tried to address four issues related to model checking: (i) proposing a formal language partic-to model concurrent and real-time systems, ... real-time systems is based on thenotation Timed Automata [10, 149] Timed Automata are powerful in designing real-time modelswith explicit clock variables Real-time constraints are captured by explicitly

Ngày tải lên: 14/09/2015, 08:38

... ENHANCE FRAMEWORK ON HAIR MODELING AND REAL-TIME ANIMATION LIANG WENQI NATIONAL UNIVERSITY OF SINGAPORE 2003 Trang 2AN ENHANCE FRAMEWORK ON HAIR MODELING AND REAL-TIME ANIMATION LIANG WENQI A ... opportunity and provides me all kinds of facilities that make my thesis possible Trang 5Maximizing visual effect is a major problem in real-time animation One work was proposed on real-time hair ... these techniques are not suitable for real-time hair animation Recently, Koh and Huang [Koh00, Koh01] proposed a strip based approach that animates in real-time But because of the 2D strip used,

Ngày tải lên: 28/09/2015, 13:21

... What Is Real-time? Real-time is harder to explain The basic idea behind real-time is that we expect the computer to respond to its environment in time Many people assume that real-time means real ... Interrupts and Exceptions 143 Critical Sections 144 Resources 145 Chapter 9: Linux and Real-time 147 Why Linux Isn’t Real-time 147 Two Approaches 150 Resources—Obtaining Real-time Linux ... Sales Trang 5Preface ixAudience and Prerequisites x Personal Biases xi Chapter 1: The Embedded and Real-time Space 1 What Is Embedded? 1 What Is Real-time? 2 How and Why Does Linux Fit in?

Ngày tải lên: 08/03/2016, 09:24

... NoSQL data stores such as Cassandra We’re going to focus on data processing tools because Storm is a data-processing tool To understand Storm, you need to understand a variety of data-processing ... variety(different types of data), and veracity (accuracy of the data) vol-■ There are three main types of tools for processing big data: batch processing,stream processing, and micro-batch processing within ... What is real-time? When we use the term real-time throughout this book, what exactly do we mean? Well, technically speaking, near real-time is more accurate In software systems, real-time constraints

Ngày tải lên: 17/04/2017, 15:34

... such as data center management and fraud detection In-memory databases ingest dataand run queries simultaneously, provide analytics on real-time and historical data in a single view,and provide ... transactionsrequiring in-memory databases to keep up with the volume of real-time data and the interest to understand that data in real time Trang 11Chapter 2 First Principles of Modern In-Memory Databases Our ... faster, a real-time data pipeline eliminates the distinction between real-time andhistorical data, such that analytics can inform business operations in real time Trang 19Chapter 4 Processing

Ngày tải lên: 04/03/2019, 14:29

... such as datacenter management and fraud detection In-memory databases ingest data andrun queries simultaneously, provide analytics on real-time and historical data in a single view, and provide ... requiring in-memory databases to keep up with the volume of real-time data and the interest to understand that data in real time Trang 23Chapter 2 First Principles ofModern In-Memory Databases Our ... feedback loops, and eliminatecostly pre-computation with the ability to capture and analyze data in realtime Trang 20Portfolio TrackingFinancial assets and their value change in real time, and the reporting

Ngày tải lên: 04/03/2019, 14:29

... and was involved in the development and implementation of realtime MIMO signal processing on reconfigurable hardware Thomas has authored and coauthored about 18 conference and journal papers and ... baseband signal bandwidth and τ(H) denotes the channel coherence time In case the channel coherence time is held fixed, then an increase of signal bandwidth always allows for more subcarriers and ... concept unites realtime high -data- rate capability and a high flexibility regarding the detection and precoding algorithms under investigation The D/A and A/D converters use duplex mode2 and are integrated...

Ngày tải lên: 22/06/2014, 23:20

... analysis of audio and video and arbitrary view and sound synthesis to encoding of 3D audio and video Understanding of real- time implementation issues, as well as system architectures and network aspects ... 11 Coding and Standardization by A Smolic and T Sikora outlines the basic coding strategies frequently used for audio, image and video storage and transmission International coding standards such ... the internet via a camera and where remote users could control a robotic arm to plant and water seeds, and subsequently watch their plants grow and flourish in real- time 1.6 TELECOMMUNICATIONS...

Ngày tải lên: 12/05/2013, 10:21

... Identification and Measurements Soliman Abdelhady Soliman and Ahmad Mohammad Alkandari Chapter On the Reliability of Real Measurement Data for Assessing Power Quality Disturbances 69 Alexandre Brandao ... to recorded data and used to determine which data are to be used for further processing, and which data should be discarded Chapter presents the problems of voltage transformers and voltage harmonic ... Quality Harmonics Analysis and Real Measurements Data Sources and problems of harmonics [2] Harmonic sources are divided into two categories: Established and known New and Future A review of the...

Ngày tải lên: 19/06/2014, 08:20

... and varied These parameters are the standard 14 Power Quality Harmonics Analysis and Real Measurements Data deviation of the noise, the number of samples, and the sampling frequency A Gaussiandistributed ... and discrete Fourier transform (DFT) The data used in this study are real data from a three-phase six pulse converter The three techniques are thoroughly analyzed and compared in terms of standard ... calculated using data taken from t = t1 to t = t1 + (m – 1)t s, t1 is the initial sampling time The elements of the matrix [A] are functions of the time reference, initial sampling time, and the sampling...

Ngày tải lên: 19/06/2014, 08:20

... Analysis and Real Measurements Data Fig 27 Gain of the proposed filter for X1 and Y1 using models and Fig 28 Estimated magnitudes of 60 Hz and third harmonic for frequency drifts using models and ... transients, and harmonics of less than 60 Hz (sub-harmonics) The waveform was originally sampled at a 118 ms time 34 Power Quality Harmonics Analysis and Real Measurements Data interval and a sampling ... current and voltage waveforms This package has been tested on simulated data sets, as well as on an actual Electric Power Systems Harmonics - Identification and Measurements 31 recorded data set and...

Ngày tải lên: 19/06/2014, 08:20

... the amplitude and phase angles of each harmonic component are time independent, steady state harmonics identification 54 Power Quality Harmonics Analysis and Real Measurements Data Fuzzy harmonic ... at frequency 1250Hz and used as measurement samples Converting Eq (88) to discrete time, t  0.08k, where k is the sampling time, and using the notation of Eq (71), v1(k) and v2(k) are defined ... Systems Research 38 (1997) 113-123 66 Power Quality Harmonics Analysis and Real Measurements Data S.A Soliman, I Helal, and A M Al-Kandari, Fuzzy linear regression for measurement of harmonic components...

Ngày tải lên: 19/06/2014, 08:20

... determination problem and sections and present two case studies Section presents general conclusions and recommendations Data reliability criteria This section is intended to present the main data reliability ... resistance data showing confidence intervals 74 Power Quality Harmonics Analysis and Real Measurements Data 2.5 Quantization error Quantization refers to the digitalization step of the data acquisition ... equivalent impedance of the transmission and distribution lines, and of the step-down and step-up transformers On the Reliability of Real Measurement Data for Assessing Power Quality Disturbances...

Ngày tải lên: 19/06/2014, 08:20

... cut-off frequency few times 102 Power Quality Harmonics Analysis and Real Measurements Data Capacitive character of VT load induces opposite effect and narrows VT pass band width significantly ... Analysis and Real Measurements Data Simplified representation of VT magnetizing and leakage impedances is presented in Fig 13, where characteristic resonance frequencies fr1, fr2, fr3 and related ... is predominant Band Band Band Zmag Zleak fr1 fr3 fr2 log f Fig 12 Simplified representation of VT magnetizing and leakage impedance-frequency characteristics The developed wideband circuit model...

Ngày tải lên: 19/06/2014, 08:20

... stages 1,2 and or 5,6 and The transistors conduct for the time of stages and 5, the freewheeling diodes – for the time of stages 3, 4, and 8, and the rectifier diodes – for the time of stages and The ... Quality Harmonics Analysis and Real Measurements Data Stages and correspond to the commutations in the inverter 0 0 The commutations in the rectifier begin in p M1 or p M5 and end in p M or p M8 ... limited within the boundary curves А and L3 or L4 The bigger the capacity of the capacitors 124 Power Quality Harmonics Analysis and Real Measurements Data СS and С0, the smaller this area is However,...

Ngày tải lên: 19/06/2014, 08:20