definition of a distributed system
List the components of a radio system
Ngày tải lên :
13/09/2012, 10:52
... slots
–
Each user is assigned the entire frequency for the
transmission
•
For a fraction of time on a fixed, rotating basis
–
Advantages
•
Uses the bandwidth more efficiently
•
Allows both data and ... of a radio system
•
Describe how different factors affect the design of a
radio system
•
Explain the radio frequency spectrum
17
Multiple Access (continued)
9
Antennas
•
Transmit or receive an ... 25
Signal Strength (continued)
19
Multiple Access (continued)
•
Code Division Multiple Access (CDMA) (continued)
–
Advantages
•
Can carry up to three times the amount of data as TDMA
•
Transmissions...
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Reliability analysis of a power system based on the multi state system theory
Ngày tải lên :
03/01/2014, 19:38
... than 5700 mAh. Suppose the capacity of the
first branch is 5600 mAh and the capacity of other branches are
all above 5800 mAh, the system is reliable because the
required capacity is reached. ... power
system and the batteries are b
inary, but they are all multi-state
actually. The performance of the batteries can degrade, which
results in performance degradation of the power system. ... Reliability Analysis of a Power System Based on the
Multi-State System Theory
Chunyang LI
College of Mechatronics Engineering and Automation
National University of Defense Technology
Changsha,...
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Tài liệu Architecture of a Database System ppt
Ngày tải lên :
20/02/2014, 05:21
... in all three DBMS
models is that the buffer pool is a large shared data struc-
ture available to all database threads and/or processes. When
a thread needs a page to be read in from the database, ... coarse-grained as full database redundancy nor as fine-grained
as chained declustering
The shared-nothing architecture is fairly common today, and has
unbeatable scalability and cost characteristics. ... hellerstein@cs.berkeley.edu
2
Massachusetts Institute of Technology, USA
3
Microsoft Research, USA
Abstract
Database Management Systems (DBMSs) are a ubiquitous and critical
component of modern computing, and the result of...
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Báo cáo " Development of a spectrometry system Using lock-in amplification technique " doc
Ngày tải lên :
05/03/2014, 14:20
... spectroscopy
has a very important role in studies of optical properties of materials. Our goal
is to build a spectrometry system to measure weak optical signals such as
Raman scattering and surface SH ... He-Ne laser instead of Ion Argon laser. The Raman
excitation by He-Ne laser showed many advantages in comparison with Argon laser
excitation.
Acknowledgements: This work is supported by the Natural ... Key board, display board, Analog Input board,
DSP Logic board and CPU and Power supply board. The DSP logic board takes a
digital input from the A/ D converter on the Analog Input board and perform...
- 6
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Báo cáo khoa học: Insights into the design of a hybrid system between Anabaena ferredoxin-NADP+ reductase and bovine adrenodoxin pot
Ngày tải lên :
31/03/2014, 07:20
... complex for-
mation and ET, by using a heterologous system that consists
of cyanobacterial FNR and adrenal bovine Adx. Anabaena
PCC 7119 FNR contains a noncovalently bound FAD
group and its main physiological ... 1A) , was taking place over a period of time of
at least 1000 s and therefore can be analysed under steady-
state conditions. Moreover, upon analysing the reaction at
shorter time scales an absorbance ... recorded after addition of
CYP1 1A1 to an anaerobic CO-saturated sample containing
the reaction mixture FNR
rd
/Adx
ox
gave rise to a peak at
450 nm together with absorbance decreases at 390, 430 and
480...
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báo cáo hóa học:" From HIV diagnosis to treatment: evaluation of a referral system to promote and monitor access to antiretroviral therapy in rural Tanzania" doc
Ngày tải lên :
20/06/2014, 08:20
... Maria Roura
2
, Samuel Kalluvya
3
,
Mark Urassa
1
, Joanna Busza
2
and Basia Zaba
2
Address:
1
Tazama Project, National Institute of Medical Research, Mwanza, Tanzania,
2
Centre for Population ... alison.wringe@lshtm.ac.uk; Maria Roura - maria.roura@lshtm.ac.uk;
Samuel Kalluvya - samuelkalluvya@yahoo.com; Mark Urassa - malloomark@yahoo.com; Joanna Busza - joanna.busza@lshtm.ac.uk;
Basia ... 85:308-312.
27. Mshana GH, Wamoyi J, Busza J, Zaba B, Changalucha J, Kalluvya S,
Urassa M: Barriers to accessing antiretroviral therapy in Kis-
esa, Tanzania: a qualitative study of early rural referrals to
the...
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Báo cáo toán học: " Existence of solutions of a new system of generalized variational inequalities in Banach spaces" ppt
Ngày tải lên :
20/06/2014, 21:20
... oints of the nonexpansive mappings,
2
Existence of solutions of a new system of gener-
alized variational inequalities in Banach spaces
Somyot Plubtieng
∗
and Tipphawan Thammathiwat
Department of ... Theory and Applications in Nonlinear Analysis. Marcel-Dekker, New York
24. Verma, RU: Iterative algorithms and a new system of nonlinear quasivariational inequalities.
Adv. Nonlinear Var. Inequal. ... 1–21,
1994
35. Alber, Ya: Metric and Genernalized Projection Operators in Banach Space: Properties and
Application. In: Kartsatos, A (ed.) Theory and Applications of Nonlinear Operators of
Accretive and...
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Báo cáo hóa học: " Research Article Dynamics of a Rational System of Difference Equations in the Plane" pot
Ngày tải lên :
21/06/2014, 05:20
... pages
doi:10.1155/2011/958602
Research Article
Dynamics of a Rational System of Difference
Equations in the Plane
Ignacio Bajo,
1
Daniel Franco,
2
and Juan Per
´
an
2
1
Departamento de Matem
´
atica Aplicada II, E.T.S.E. ... Equations, Chapman &
Hall/CRC, Boca Raton, Fla, USA, 2002.
7 E.Camouzis,M.R.S.Kulenovi
´
c, G. Ladas, and O. Merino, “Rational systems in the plane,” Journal of
Difference Equations and Applications, ... results, applications, and open
problems on higher-order equations and rational systems.
A preliminar study of planar rational systems in the large can be found in the paper
7 by Camouzis et al....
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The Design and Implementation of a Log-Structured File System
Ngày tải lên :
12/09/2012, 15:05
... separate data area is reserved for this purpose.
The separate data area of these database systems means
that they do not need the segment cleaning mechanisms of
the Sprite LFS to reclaim log space. ... illustrates the fact that a log-structured file
system produces a different form of locality on disk than
traditional file systems. A traditional file system achieves
logical locality by assuming certain ... The bandwidth of each of the five phases is
shown separately. Sprite LFS has a higher write bandwidth and
the same read bandwidth as SunOS with the exception of sequen-
tial reading of a file that...
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The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System
Ngày tải lên :
12/09/2012, 15:05
... in nature to a data manager which fails to free
data, but is easier to detect and prevent.
• Data manager changes data. A malicious data manager may change the value of its data on each cache
refresh. ... data. It is usually made
in response to a pager_data_request call made to the data manager by the kernel.
Typical data managers will only provide data upon demand (when processing pager_data_request ... it
initiates a cache replacement.
A data manager may restrict the use of cached data by issuing a pager_data_lock request, specifying the types of
access (any combination of read, write, and execute)...
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- 1
Simulation of a Multiple Input Multiple Output (MIMO) wireless system
Ngày tải lên :
20/11/2012, 11:36
... contains all of the data about rays propagating from a base station to a field
point. Each field point has a ray list associated with it. A ray list is defined by the class
‘ray_list.hh’ and ... originally developed for
applications in radar and sonar systems. Using multiple antennas introduces spatial diversity
into the system. These antennas are also known as ‘smart antennas’. Spatial ... it is passed a particular base station, an image and its order, and also the
field point. As seen earlier a ray is made up of nodes, two of these nodes are always the base
station and the field...
- 73
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- 1
A review of agile manufacturing systems
Ngày tải lên :
23/11/2013, 10:01
... the
fractal layout organization that has been introduced as an alternative to the more
traditional function and product organizations. Fractal layout with a nearly square
arrangement of machines ... organization. One disadvantage is that
3576 L. M. Sanchez and R. Nagi
Layout
Author type Approach
Venkatadri Fractal A decomposition was used to perform assignment and layout of tasks.
et al. ... journals such as the Internationa l Journal of Agile Management Systems, the
Internationa l Journal of Agile Manufacturin g. A total of 73 citations on agile manu-
facturing were reviewed (see tables...
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