design and implementation of a sampling program

The Design and Implementation of a Log-Structured File System

Ngày tải lên : 12/09/2012, 15:05

... have been primarily in the areas of cost and capacity rather than performance There are two components of disk performance: transfer bandwidth and access time Although both of these factors are ... simulates the actions of a cleaner until a threshold number of clean segments is available again In each run the simulator was allowed to run until the write cost stabilized and all coldstart variance ... separate data area of these database systems means that they not need the segment cleaning mechanisms of the Sprite LFS to reclaim log space The space occupied by the log in a database system can...

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Design and Implementation of a Three-Phase Induction Motor Control Scheme

Ngày tải lên : 27/10/2013, 23:15

... processes and variables are modelled mathematically Furthermore, the MATLAB program can convert a MATLAB design into a C-code design in a relatively straightforward manner Hence, this stage of the ... Therefore, data acquisition, debugging and fault logging are realized • × fast A/ D (Analogue to Digital) converters with 10-bit resolution make the computation of accurate, real-time phase current measurements ... to generate a means of instantaneously controlling the torque and flux Field-orientated controllers require control of both magnitude and phase of the AC quantities and are, therefore, also referred...

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Tài liệu Experiences in Design and Implementation of a High Performance Transport Protocol doc

Ngày tải lên : 15/01/2014, 15:59

... Efficiency and Fairness Characteristics • Takes 7.5 seconds to reach 90% of the link capacity, independent of BDP • Satisfies max-min fairness if all the flows have the same end-to-end link capacity ... between Chicago and Amsterdam TCP Throughput (Mbps) 80 70 60 50 40 30 20 Number of UDT flows 10 Stability • Stability index of UDT and TCP – Stability: average standard deviation of throughout ... TCP flows and UDT flows between SARA and StarLight Realtime snapshot of the throughput The UDT flows have similar performance and leave enough space for TCP flows TCP Friendliness • Impact on short...

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Tài liệu Báo cáo khoa học: "DESIGN AND IMPLEMENTATION OF A LLXICAL DATA BASE " docx

Ngày tải lên : 22/02/2014, 09:20

... evident as large natural language processing systems are being developed For instance, a translation system or any other type of natural language processing program that must be able to handle ... derivation can be found with inflection Halle gives examples of accidental gaps such as defective paradigms, phonological irregularity (accentuation of Russian nouns) and idiosyncratic meaning Also, ... is what I would call "practical requirements" and has to with the complexity of the task of creating a lexical entry It can roughly be viewed as a measure of the time it takes to create a new...

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**The Design and Implementation of a Sequence Database System * docx**

Ngày tải lên : 16/03/2014, 16:20

... on Management of Data, May 1994 [CS92] RakeshChandmand Arie Segev.ManagingTemporalFinancial Data in anExtensible Database.In Proceedings of the International Conference on Very Large Databases(VWB), ... supports relational data as well as sequencedata, using a novel design paradigm of enhancedabstractdata types (BADTs ) The systemimplementation basedon this paradigmallows sequence relational queriesto ... valueis created,or determinedautomatically by the system Catalog Management: Each E-ADT can provide catalogs that maintain statisticsand storeschemainformation Further, certain valuesmay be named Query...

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The Design and Implementation of a Java Virtual Machine on a Cluster of Workstations pptx

Ngày tải lên : 23/03/2014, 22:21

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Báo cáo hóa học: " Advancing donor management research: design and implementation of a large, randomized, placebo-controlled trial" pot

Ngày tải lên : 21/06/2014, 03:20

... across a wide variety of critically ill patients with acute pulmonary edema Inhaled beta-2 agonists increase the rate of alveolar fluid clearance and reduce pulmonary edema in both animal and human ... 4California Transplant Donor Network, Oakland, CA, USA 5Department of Medicine, University of California, San Francisco, CA, USA 6Department of Anesthesia, University of California, San Francisco, CA, ... volume of at least 10 ml/kg of actual body weight and PEEP of at least mmHg with further increases up to a maximum of 15 ml/kg mandated if PaO on FiO of 1.0 was < 500 and/ or chest radiograph was...

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Báo cáo hóa học: " Research Article Design and Implementation of a Lightweight Security Model to Prevent IEEE 802.11 Wireless DoS Attacks" pdf

Ngày tải lên : 21/06/2014, 05:20

... consists of two areas as authorized and attacker The authorized area consists of two wireless stations associated to the access point which follow the IEEE 802.11 standard MAC layer The attacker area ... [2] investigated the control frames vulnerabilities and adopted enhanced hmac-md5 and hmacsha1 (EHMAC) algorithms The format of RTS, CTS, and ACK frames was modiﬁed by adding extra 80 to 160 ... identical to the standard model The summary of comparison between the accuracy rate of the ACFNC model and the standard model is provided in Table 6.4 Performance Evaluation of the STSF in the ACFNC...

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Báo cáo hóa học: " Research Article Design and Implementation of a Generic Energy-Harvesting Framework Applied to the Evaluation of a Large-Scale Electronic Shelf-Labeling Wireless Sensor Network" pdf

Ngày tải lên : 21/06/2014, 11:20

... is the farad; farad = coulomb per volt; typical capacitances are measured in microfarads or picofarads) 5.2.1 The Virtual Capacitor To implement the law of Coulomb, a TinyOS application was developed ... 5.3.1 Battery Emulation For a battery emulation of 3.49 V and 2000 mAh, we could deﬁne a full battery with initial voltage of 3.49 V and a harverster which is equal to zero and a capacitor of 2063 ... 3B37 3A2 8 3B49 3B50 3A2 6 3B53 3A2 7 Controller 3A3 1 3A2 2 3A2 3 3A1 4 3A1 1 3A1 9 3B51 3B54 3A2 0 3A7 3B35 3B38 3A4 3A1 3A1 0 3A1 5 3A8 3A1 6 3B42 3B46 3A2 1 3A1 8 3A9 3A2 3A6 3A3 Figure 12: Spatial distribution...

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báo cáo hóa học:" Research Article Design and Implementation of a Testbed for IEEE 802.15.4 (Zigbee) Performance Measurements" doc

Ngày tải lên : 21/06/2014, 18:20

... for each trial A second Java program (Analyze.java) was developed to analyze the saved files containing the received packets Since the transmitted data is known, this program can easily calculate ... running BaseStation.java as a console command Three of the input arguments include: the node ID of the transmitter node that is asked to send the data packets, the number of data packets the transmitter ... for that particular packet All of these packets are picked up by BaseStation.java listening on the USB port and it saves each consecutive packet in a file for future analysis A new file is created...

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báo cáo hóa học:" Research Article Design and Implementation of a Single-Frequency Mesh Network Using OpenAirInterface" docx

Ngày tải lên : 21/06/2014, 18:20

... channel measurements which can be used for channel characterization and capacity analysis [2] Apart from a general overview of OpenAirInterface, in this paper we present OpenAirMesh a specification ... norm of a vector a is denoted by a and the Frobenius norm of a matrix A is denoted by A F E denotes expectation, and EURASIP Journal on Wireless Communications and Networking Table 1: Hardware ... node Variable bit-rate traffic channel with negotiated QoS parameters used by the mesh network to transport data traffic corresponding to a particular flow Table 4: Transport and physical channels Each...

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Báo cáo hóa học: "Design and implementation of a real time and train less eye state recognition system" docx

Ngày tải lên : 21/06/2014, 19:20

... Authors of [6, 7] use the fact that the iris and pupil are darker than skin and white part of the eye Authors of [11] proposed an algorithm based on the cascade AdaBoost classifier In [12], a gray ... Design and implementation of a real time and train less eye state recognition system Mohammad Dehnavi*1 and Mohammad Eshghi1 ECE Department, Shahid Beheshti University, Tehran, Iran *Corresponding ... light, and the color of eyebrow and eyelash highly affect the accuracy of the proposed algorithm in [10] Algorithms in [11, 15, 16] have a training phase and also their hardware implementation...

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Báo cáo y học: "Practising evidence-based medicine: the design and implementation of a multidisciplinary team-driven extubation protocol" pptx

Ngày tải lên : 12/08/2014, 18:21

... Esteban A, Alia I, Gordo F, Fernandez R, Solsona JF, Vallverdu I, Macias S, Allegue JM, Blanco J, Carriedo D, Leon M, De la Cal MA, Taboada F, Gonzalez de Velaso J, Palazon E, Carrizosa F, Tomas ... potentially accelerate decision-making with regard to extubation; and to assess the safety and feasibility of our approach Materials and method The intervention was carried out in a 14-bed medical/surgical ... assistance provided by Dr A Esteban and Dr A Anzueto, Michael Aubin, George Tomlinson, Rod Fowler and all of the medical, respiratory care and nursing staff of the ICU at Mount Sinai Hospital References...

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Design and implementation of a testbed for indoor mimo systems

Ngày tải lên : 25/03/2015, 11:04

... channel In addition, w e only pay attention to uniform antenna arrays in this section, that is, all an tennas are aligned and equally separated in the tran sm it and receive antenna arrays 8 2.2.1 ... create b aseb and signal and m odulation type to be applied in the tran sm itter and to receive reco vered data signal for channel capacity co m p u tin g (figure 19) Both b aseb an d and IF parts ... creates a sine w ave o f 12.5M H z to shift base b a n d signal to IF band before passing through D ACs Figure 23: Baseband Transmitter Diagram a) Data G en erato r b) W alsh code G en erato...

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Design and implementation of a high speed and low power flash ADC with fully dynamic comparators

Ngày tải lên : 04/10/2015, 10:26

... ADCs Among various ADC architectures, flash ADC suits this purpose favorably because of its inherent parallel thus very fast structure and low signal latency Also, the large area overhead that ... 106.1 32.3 304 Table 2.1 Summary of bit flash ADC designs *Calculated based on data given in paper 2.3 Flash ADC Designs with Calibration Techniques Rather than averaging and interpolating to reduce ... comparator calibration technique and more importantly, its application to a low power and high speed flash ADC design 21 Chapter A Background Comparator Offset Calibration Technique Chapter A Background...

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Báo cáo y học: "Effects on management and outcome of severe sepsis and septic shock patients admitted to the intensive care unit after implementation of a sepsis program: a pilot study" docx

Ngày tải lên : 13/08/2014, 19:20

... providing an early and appropriate sepsis management A large number of patients and a more detailed assessment of sepsis team activity before ICU admission appears mandatory for a better understanding ... design, data analysis and has been involved in drafting the manuscript LR has made substantial contributions to study conception and design, acquisition of data, statistical analysis and has been ... drafting the manuscript LD has made substantial contributions to study conception and design and acquisition of data MM has made substantial contributions to study conception and design and has...

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methodology and implementation of a software architecture for cellular and lattice-gas automata programming

Ngày tải lên : 14/11/2014, 14:04

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Real-Time Digital Signal Processing - Chapter 5: Design and Implementation of FIR Filters

Ngày tải lên : 23/10/2013, 22:15

... lowpass filter that is non-causal and hence not physically realizable Instead we must compromise and accept a more gradual cutoff between passband and stopband, as well as specify a transition band ... relative importance of each band For example, there would be less ripples in the passband than in the stopband A variety of software packages are commercially available that have made digital ... types of filters: lowpass, highpass, bandpass, and bandstop filters Each ideal filter is characterized by a passband over which frequencies are passed unchanged (except with a delay) and a stopband...

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Design and Simulation of A CMOS-MEMS Accelerometer

Ngày tải lên : 27/10/2013, 23:15

... estimated value is calculated assuming a total sensing capacitance of 60fF Parasitic capacitance and mismatch of sensing capacitance is measured in a way as shown in Figure 5.4 The capacitance ratios ... ﬁrst-generation accelerometer were performed on a probe station Table lists major parameters of the device Only the ratio of parasitic capacitance and sensing capacitance can be measured, and the ... Integrate During the Sample phase, Vs+ and Verror are sampled to sampling capacitor Ci1, and Vs- is sampled to Ci2 At the same time, integration capacitors Cf1 and Cf2 are reset to zero charge, and...

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