... High- Performance, High- Reliability Implementation of SQL," Workshop on High Performance Transaction Systems, Asilomar, CA, September 1987 [TAND88] Tandem Performance Group, "A Benchmark of Non-Stop ... no economy of scale At best, one can expect linear speedup and scaleup of performance and price /performance Fortunately, shared-nothing database architectures achieve this near-linear performance ... Dataflow Approach to SQL Software Terabyte online databases, consisting of billions of records, are becoming common as the price of online storage decreases These databases are often represented and...
Ngày tải lên: 28/04/2014, 13:30
... improve the overall performance of the nonalternating classic algorithm, in terms of the processing time, speed-up, and the quality of the signal 2.3 GOF-based 3D-WT One of the major challenges ... disadvantage is the higher number of samples to process at each level (except the first level) because of the higher size of low frequency bands However, we will show that the use of a proper workload mechanism ... successive highpass and lowpass filtering The lowest resolution band includes the high- magnitude approximation coefficients of the signal Most of the energy is captured by those coefficients while most of...
Ngày tải lên: 22/06/2014, 19:20
This article appears in the February 2010 issue ofThe journal of high-performance potx
... economies of Brazil, Russia, India and China—to another wave of high- growth countries, including South Korea, Mexico and Malaysia Outlook 2010 Number Accenture’s research shows that highperformance ... drivers of this new phase of globalization in its 2007 study titled “The Rise of the Multi-Polar World.” In putting together the Multi-Polar World Index, we compared the relative performance of economies ... majority of economies, the actual level of coverage was significantly higher than this (typically 95 percent to 100 percent) Where data were lacking, we used reliable alternative sources Timing of...
Ngày tải lên: 28/06/2014, 17:20
This article originally appeared in the 2012, issue ofThe journal of high-performance ppt
... flexibility of the work environment to what sorts of devices employees can use to their work Outlook 2012 Number For traditional managers, opinionated, high- energy digital talent—often part of the ... but start small, using the measure-test-learn/proof -of- concept techniques favored by the likes of Google and Facebook, amplifying the impact of digital evangelists around the company as they ... and monetize a wealth of data on customer driving habits Even more significant is the rapid shift of the technological balance of power toward the consumer At the turn of the millennium, companies...
Ngày tải lên: 28/06/2014, 17:20
Báo cáo nghiên cứu khoa học: "Analysis of Early-age cracking in restrained ring specimens of high performance concrete using finite element method" pdf
... layer exceeds the tensile strength of concrete (f’ t) The ring specimens The FEM of the ring test was performed using the software of ANSYS The dimensions of the ring setup and the boundary conditions ... was used as input using the assumption of a constrained radial displacement of the nodes of the outer circumference of the steel ring The average strain of the steel ring was taken equal to -70 ... extension in the direction of the axis of the ring It is interesting to note that the sum r + is constant through the thickness of the wall of the ring, as theory of elasticity proposes As...
Ngày tải lên: 21/07/2014, 17:21
Chapter 10 - Quality of Service in the IMS ppt
... CHAPTER 10 QUALITY OF SERVICE IN THE IMS LS semantics are typically used to group an audio and a video stream, as shown in Figure 10.1 The a=group line carries the semantics of the group (LS in ... shown in Figure 10.6 The number of additional PDP contexts, referred to as secondary PDP contexts, depends on the instructions received from the P-CSCF in the form of a=group:SRF lines Secondary ... streams in the group should use the same resource reservation flow Consequently, the two audio streams of the session description in Figure 10.2 would use the same PDP context (assuming a GPRS access),...
Ngày tải lên: 01/08/2014, 17:21
Integrated servo mechanical design of high performance mechanical systems
... Servo-Mechanical Design of High- Performance Mechanical Systems Yan Zhi Tan B.Eng (Hons.), National University of Singapore, 2010 A DISSERTATION SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY NUS ... Bibliography 110 List of Publications 122 ix Summary High- performance mechatronics are required to satisfy specifications such as high control bandwidth, attenuation of disturbances at high frequencies, ... results of this dissertation, and presents some possible future research directions 20 Chapter Integrated Servo-Mechanical Design of High- Performance Mechatronics Using Generalized KYP Lemma High- performance...
Ngày tải lên: 09/09/2015, 08:17
Analysis, design and implementation of high performance control schemes in renewable energy source based DC AC inverter for micro grid application
... THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING NATIONAL UNIVERSITY OF SINGAPORE 2011 Acknowledgments The author wishes to record his deep sense of gratitude ... references, which in turn necessitates digitally implemented high- performance controllers for these applications This thesis investigates different high- performance control schemes to control power flow as ... control of b-4 inverter unlike the conventional adaptive SVPWM method Detailed experimental results are provided to show the efficacy of each of the methodologies List of Tables 3.1 Parameters of the...
Ngày tải lên: 09/09/2015, 18:56
Early age shrinkage monitoring of high performance cementitious mixtures using monolithic and composite prism specimens
... increasing demands of material performance, one of which is the introduction of enhanced cementitious mixtures also known as High Performance Cementitious Mixtures (HPCM) or High Performance Concrete ... VERSUS DEPTH OF HIGH PERFORMANCE CEMENTITIOUS MIXTURES 4.1 Introduction 83 4.1.1 Effect of High- range water reducing admixture (i.e HRWRA / superplasticizer) 85 4.1.2 Effect of aggregate ... advantages of using High Performance Cementitious Mixtures are widely acknowledged The use of HPC in high rise buildings will increase the lateral stiffness and reduce the deflection of these buildings,...
Ngày tải lên: 10/09/2015, 15:52
Analysis, design and implementation of high performance control schemes for three phase PWM AC DC voltage source converter
... harmonics The second alternative has the advantage of providing high dynamic performance Hence, this thesis is aimed at developing active control solutions to achieve high performance for three phase ... use of bulky filters However, the bulky filters would not only slow down the dynamic response of the PWM rectifier but also increase the size of the converter The alternative is to make use of active ... IMPLEMENTATION OF HIGH PERFORMANCE CONTROL SCHEMES FOR THREE PHASE PWM AC-DC VOLTAGE SOURCE CONVERTER XINHUI WU (B.Eng(Hons.), SJTU, Shanghai, China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY...
Ngày tải lên: 11/09/2015, 16:02
The top 10 secrets of conversational hypnosis
... a high- quality audio recording of the entire course You may already be aware of just how powerful hypnosis is for helping you get the results you want in every area of your life In fact, one of ... state the needs of the other partner He says, however, that it often takes quite a bit longer to get to the point where they can that These are examples of meeting someone at their map of the world ... by Richard Bandler and the Society of NLP as a Trainer of Neuro-linguistic Programming (NLP) Jamie is author of The NLP Tip, an e-zine which goes to thousands of people around the world each week...
Ngày tải lên: 28/09/2015, 19:08
Control of high performance single phase DC AC inverter
... system, failure of one UPS would not affect the operation of loads Hence, the distributed approach is more practical than centralized approach for high power applications because of its high reliability, ... improving system performance of a static UPS system 1.1.1 Control of DC-AC Inverters In control of DC-AC inverters, Total Harmonic Distortion (THD) of the output voltage and dynamic response of the converter ... control makes up for the deficiencies of deadbeat controller which is caused by variation of model parameters • The effect of learning gain of the performance of the time domain based repetitive...
Ngày tải lên: 03/10/2015, 21:56
Desalination by membrane distillation fabrication of high performance membranes
... especially grateful to Prof William B Krantz Isac mayor professor in Dept of Chemical & Biomolecular Engineering of NUS for his wise guidance regarding my first paper in the journal of membrane science ... transfer…………………………………………………………………………… 22 3.3 Characteristics of a high performance MD membrane………………………………… 24 3.3.1 High membrane permeability…………………………………………………… 24 3.3.2 High membrane wetting resistance and long ... flux as high as 55 kg/m2hr and energy efficiency of 83% at 90 °C was achieved in the test The obtained flux is much higher than most of the previous reports, indicating that the application of dual...
Ngày tải lên: 04/10/2015, 10:24
Early age deformation characteristics of high performance concrete
... in the use of high- performance concrete has been increasing especially in the construction of high- rise buildings, long-span bridges, and structures exposed to severe environment High performance ... drying shrinkage of the concretes With research, a lot of progress has been made in the understanding of the deformation behavior of high- performance concrete The causes and mechanisms of the autogenous ... Modulus of Elasticity of the Concrete Mixture with w/b ratio of 0.35, 5% SF and granite (Mix S35-5) 82 Table 4.8 Modulus of Elasticity of the Concrete Mixture with w/b ratio of 0.35,...
Ngày tải lên: 04/10/2015, 17:07
Early age deformation characteristics of high performance concrete
... in the use of high- performance concrete has been increasing especially in the construction of high- rise buildings, long-span bridges, and structures exposed to severe environment High performance ... drying shrinkage of the concretes With research, a lot of progress has been made in the understanding of the deformation behavior of high- performance concrete The causes and mechanisms of the autogenous ... Modulus of Elasticity of the Concrete Mixture with w/b ratio of 0.35, 5% SF and granite (Mix S35-5) 82 Table 4.8 Modulus of Elasticity of the Concrete Mixture with w/b ratio of 0.35,...
Ngày tải lên: 05/10/2015, 19:00
high performance computing in science and engineering '10 transactions of the high performance computing center, stuttgart (hlrs) 2010
... carried out by extensions of the software package ESPResSo (An Extensible Simulation Package for Research on Soft matter) One of the programs advantages is its high performance MPI-parallelisation ... generation of HPC systems at the GCS Since the installation of the IBM Blue Gene/P at NIC/JSC in May 2009 – the first phase of the HPC Tier-0 resources – the GCS provides the most powerful high- performance ... determination of Δsp (K) as a function of the starting point of the fitting range τstart with the covariance matrix of the Green’s function taken into account Further details on the nature of this intermediate...
Ngày tải lên: 01/06/2014, 09:18
High performance liquid chromatographic analysis of urinary catecholamines employing amperometric detection.pdf
... amount of internal standard, and performed acetic acid extractions from the alumina instead of used by the original authors Adjust the pH of mL of urine to 3.0 with N sodium hydroxide Add 15 mL OF ... mL of 0.7 M sulfuric acid and allow to drain Elute the catecholamines with mL of M ammonium sulfate solution Add 100 ~L of 4% thioglycolic acid and 500 ~L of M Tris buffer pH 8.6 Add 100 mg of ... separation was achieved at room t e m p e r a t u r e Composition of the Mobile Phase Increasing the methanol content of the mobile phase from the 5O/o employed by Moyer et al (8) to 10°/o considerably...
Ngày tải lên: 16/12/2012, 15:24
Analysis and performance of high efficiency synchronous reluctance machines
... laminated or a combination of both It has been due to obvious advantages in performance and commercial manufacturing Analysis and performance The principle of operation of reluctance synchronous ... manufacturing point of view and reasonably high performance as a variable speed motor These machines are driven as variable speed drive systems Table summarises the experimental performance of flux-guided ... non-magnetic materials can result in high saliency ratio and also high (Ld-Lq), a pre-requisite for improved performance The inductances and the performance of one such machine is also given when...
Ngày tải lên: 05/09/2013, 16:30
Tài liệu 10 secrets to acing any high school test pptx
... makes a sundae using one of six different flavors of ice cream, one of three different flavors of syrup, and one of four different toppings What is the total number of different sundaes that ... total number of different sundaes that the ice cream parlor can make is the number of different flavors of ice cream times the number of different flavors of syrup times the number of different ... Several types of test will be administered to you during your high school and post -high school career You have probably already been exposed to most, if not all, of the major styles of testing When...
Ngày tải lên: 21/12/2013, 19:15