automated storage and retrieval systems

... effectively and greatly improves the speed of data retrieval We introduce two types of indexes: content index and node index Blob Data Storage Beside the nonblob data storage problem, the blob data storage ... current storage structures of existing database systems, such as relational databases, Bigtable, PNUTS, semi-structured model and so forth, and analyze the advantages and disadvantages for each storage ... model and can be supported by serval types of storage systems, such as: Row Store, Column Store and so on Relational databases have been the predominant database systems since the 1980s and achieved...

Ngày tải lên: 04/10/2015, 10:24

... Challenges in TwoDOS Systems 1.1.2 Challenges in MIMO-OFDM Systems 1.2 Optical Storage Systems 1.2.1 Historical Overview 1.2.2 Detection in Optical Storage Systems 1.3 Wireless ... many benefits and has been investigated for various digital communication systems For example, multi-track optical storage systems with parallel read-out can increase the data rate and storage density ... generation optical storage standard [43, 91, 143, 151] Even though each new generation offers significant improvement in storage capacity, the growth rate of storage density in optical storage systems lags...

Ngày tải lên: 14/09/2015, 14:12

... nhanh (cache, nhớ chính) xem lưu trữ sơ cấp (primary storage) , thiết bị lưu trữ mức thấp đĩa từ xem lưu trữ thứ cấp hay lưu trữ trực tuyến (on-line storage) , thiết bị lưu trữ mức thấp gần thấp đĩa ... lên đĩa lần, không cho phép xoá viết lại, đĩa viết lại (rewritable) v v • Lưu trữ băng từ (tape storage) : Lưu trữ băng từ thường dùng để backup liệu Băng từ rẻ đĩa, truy xuất liệu chậm (vì phải ... Lưu trữ đĩa tồn cấp nguồn Lưu trữ đĩa bị hỏng hóc, không thường xuyên • Lưu trữ quang (Optical storage) : Dạng quen thuộc đĩa quang học loại đĩa CD-ROM : Compact-Disk Read-Only Memory Dữ liệu...

Ngày tải lên: 15/09/2012, 09:38

... Short-term and Heavy rainy, SDG: Short-term and Drainage, LSD: Long-term and Stagnant, LHT: Long-term and Heavy rainy, LMK: Long-term and Monsoon flood, PDL: Persistent and Drainage, PHS: Persistent and ... supply and (c) sanitation systems and attitudes for (d) water treatment at home, (e) children’s defecation habits and (f) hygiene practices Note: Communities code name, SRM: Short-term and Rainy, ... LHT LMK PDL PHS PSM NCD Hand washing with soap before eating Hand washing without soap before eating No hand washing before eating Hand washing after defecation with soap Hand washing after defecation...

Ngày tải lên: 05/09/2013, 10:15

... management and pollution controls Contamination of raw water source Implement and enforce water and land protection zones Water stress/ insufficient water allocation Study water yields; draft and conclude ... include blower and oxidation ditch, pump and trickling filter, and clarifier Based on the literature review, specifications, operating time, and capacity, it was estimated that blower and oxidation ... efficiency and renewable investments Conclusions and future work This research evaluates the relationship between environmental and energy factors and explores the value in tracking energy and environmental...

Ngày tải lên: 05/09/2013, 15:28

... Microcontroller and Embedded Systems: Using Assembly and C Mazidi, Mazidi and McKinlay Chung-Ping Young 楊中平 Home Automation, Networking, and Entertainment Lab Dept of Computer Science and Information ... Numbering and coding systems Digital primer Inside the computer Department of Computer Science and Information Engineering National Cheng Kung University, TAIWAN NUMBERING AND CODING SYSTEMS Decimal and ... Microcontroller and Embedded Systems: Using Assembly and C Mazidi, Mazidi and McKinlay Chung-Ping Young 楊中平 Home Automation, Networking, and Entertainment Lab Dept of Computer Science and Information...

Ngày tải lên: 04/10/2013, 19:10

... (N), • cylindrical (C) and • asymmetrical (A) Using the possible electromagnetic systems and geometry, actuators and sensors (motion nano- and microstructures as well as nano- and microdevices) can ... ICs, provide enabling benefits and capabilities to design and manufacture NEMS and MEMS Critical issues are to improve power and thermal management, circuitry and actuator/sensor integration, ... integrated circuit and micromachining silicon, germanium, and gallium arsenic technologies have been developed and used to manufacture ICs and motion microstructures (microscale actuators and sensors)...

Ngày tải lên: 17/10/2013, 11:15

... closed-loop systems use the data from different sensors, feedback commands (controls) are generated and executed, and intelligent updates and evolution are performed The feedback for sensor and control ... because V (e, x ) > and dV (e, x)

Ngày tải lên: 19/10/2013, 18:15

... the stator and rotor circuitry dynamics As the control and state variables we use the voltages applied to the stator (as and bs) and rotor (ar and br) windings, as well as the stator and rotor ... following relation and frequency f of the supplied voltages To attain the acceleration and settling time specified, overshoot and rise time needed, the general purpose (standard), soft- and high-starting ... the following variables and symbols are used: uas , ubs and ucs are the phase voltages in the stator windings as, bs and cs; uqs , uds and uos are the quadrature-, direct-, and zero-axis stator...

Ngày tải lên: 19/10/2013, 18:15

... standard There are several network standards, PDA standards, browsing standards, protocol standards…etc In the wireless world, airwaves are the only vehicle to send and receive data Depending on the ... enhanced voice and data and even video It is bandwidth can be as high as Mbps and will operate at GHz Will Wireless banking play a major role in new markets? P2P (Person to Person), and P2A (Person ... The WebSphere application server will handle the data dynamically and adapt it to the handheld device Also it can run multiple applications and requests, and can be easily integrated to the backend...

Ngày tải lên: 26/10/2013, 16:15

... crudely functional whole and then to remove and replace less reliable subsystems Challet and Johnson estimate that one-half of the components could be significantly imperfect and yet the system as ... attention self-organization and emergence in complex natural systems Both ID and hyper-adaptationist Darwinian (HD) theorists share assumptions about the nature of organisms and systems These shared ... Design, and Complex Systems Dynamics 1:5 183 sources for such molecules and their spontaneous self-organization into membranous vesicles have been demonstrated (Deamer and Pashley 1989; Deamer and...

Ngày tải lên: 01/11/2013, 07:20

... described by two vectors g1 = 101] and g2 = 111] and the corresponding code word c2 c1 ], where c1 =4 b2 b1 b0 7g and c2 =4 b2 b1 b0 (1.17) 7g (1.18) and where b0 , b1 , and b2 are the three bits in ... g1(z) = + z2 and g2(z) = + z + z2 (1.19) where denotes the present input bit, and z and z2 represent the previous input bits having one and two clock period delays, respectively, and + is modulo ... Walsh code 0, or w0 ; row and column are w1 ; row and column are w2 ; and row and column are w3 The Walsh code number w j is the average number of zero crossings between +1 and If the numbers are...

Ngày tải lên: 07/11/2013, 16:15

... line and switches, S1, S2, S3, S4 When S1 and S4 are closed, the current goes from Vin, through S1, Motor and then S4, making the motor turn right Similarly, when the S1 and S4 are open, S3 and ... Electronics and Telecommunication, Da Nang University of Technology and Mr Le Thai Hung, Texas Instruments, Vietnam They were abundantly helpful and offered invaluable assistance, support and guidance ... down • 22µA in standby-I • On chip voltage regulator • 1.9 to 3.6V supply range • Automatic packet handling • Auto packet transaction handling • Air compatible with nRF2401A, 02, E1 and E2 • Low...

Ngày tải lên: 06/12/2013, 16:03

... signalling random variable of the error in S (dB) random variable of the power control error in the received interference power random variable with standard deviation σe shadow fading random variable ... the variations in the terrain and the distribution of buildings and streets We allow for these variations by introducing a random variable λ having zero mean and standard deviation σ Often λ is ... Sectors E and F have a reuse distance of 3R , sectors B, D and G have a reuse distance of 3R, and sectors A and C have a reuse distance of 3R We find that the average SIR is 4:4 dB, 7:4 dB, and 8:6...

Ngày tải lên: 14/12/2013, 23:15

... The filter pass band extends from to f p and the stop band extends from fs to ∞ Within the pass band the filter response is prescribed within the limits δ1 , and within the stop band the filter response ... positioned in such a way as to allow sufficient guard bands between other services operating above and below the cellular band and between the A and B services Consequently, the CDMA carriers are ... spectral guard bands between the different operator frequency blocks (unless adjacent blocks are allocated to the same operator) and between the systems that occupy the frequency bands above and below...

Ngày tải lên: 14/12/2013, 23:15

... interfering mobile and zeroth BS, is rj = q D2 j + r2 2D j r cos(ϕ) (5.81) and ζ is the difference between λi j and λ0, the independent random variables with zero mean and standard deviation σ ... functions, and ζ j ζk and ζl are Gaussian random variables each having a p standard deviation of 2σ If φ( ) ( ) is not 1, then handover occurs Because Iext =S is a function of the random variables ... the ith mobile in the jth cell, and ε is a random variable p having zero mean and normal distribution with a standard deviation of σε = 2σe From Equations (5.82) and (5.100), the total intercellular...

Ngày tải lên: 14/12/2013, 23:15

... wider bandwidth systems as more bandwidth is available for 3G networks We therefore agree that IS-95 is a 2.5G system and its evolution to 3G should be smooth This is not so for 2G TDMA systems ... PCS and DECT in other parts of the world Segment is used at present for PCS and PHS in the United States and Japan, respectively Segments and form 60 MHz frequency division duplex (FDD) bands ... of address and control information to the PDU for routing within and between PLMNs Encapsulation, and its reverse, are performed between the GGSN nodes of PLMNs, and between the SGSN and an MS...

Ngày tải lên: 14/12/2013, 23:15

... and Autonomous Systems 38 (2002) 1–18 control” method proposed by Jordan and Rumelhart [9] for neuro-control In the original method, two neural networks are used: one for modeling the plant and ... small) for the values between 0.2 and 0.7, Z (approximately zero) for the values between −0.2 and 0.2, NS (negative small) for the values between −0.2 and −0.7, and NB (negative big) for the values ... with ∗) are different and they differ from only one linguistic concept (PS instead of PB and Z instead of PS and NS) So, we can claim that the extracted rules are quite logical and coherent Moreover,...

Ngày tải lên: 22/12/2013, 21:18

... The filter pass band extends from to f p and the stop band extends from fs to ∞ Within the pass band the filter response is prescribed within the limits δ1 , and within the stop band the filter response ... positioned in such a way as to allow sufficient guard bands between other services operating above and below the cellular band and between the A and B services Consequently, the CDMA carriers are ... spectral guard bands between the different operator frequency blocks (unless adjacent blocks are allocated to the same operator) and between the systems that occupy the frequency bands above and below...

Ngày tải lên: 23/12/2013, 17:15

... interfering mobile and zeroth BS, is rj = q D2 j + r2 2D j r cos(ϕ) (5.81) and ζ is the difference between λi j and λ0, the independent random variables with zero mean and standard deviation σ ... functions, and ζ j ζk and ζl are Gaussian random variables each having a p standard deviation of 2σ If φ( ) ( ) is not 1, then handover occurs Because Iext =S is a function of the random variables ... the ith mobile in the jth cell, and ε is a random variable p having zero mean and normal distribution with a standard deviation of σε = 2σe From Equations (5.82) and (5.100), the total intercellular...

Ngày tải lên: 23/12/2013, 17:15