digital data analog signal pdf
DIGITAL DATA TRANSMISSION - I
Ngày tải lên :
19/10/2013, 17:15
...
Digital Signal Source:
The signal sources produce a series of “0”s (about –2.5 V) and “1”s (+2.5 V) at the data rate
set by the Master Clock. The time period of each bit is T = 1/fs. This signal ... detection process. This signal is useful in accurately measuring errors
in detected data due to a communications channel.
Figure 5 A (b) Block parameters digital signal source
Summer:
Page ...
signal source produces equally likely 0’s and 1’s.
Figure 5 A (d) Block parameters limiter
Error Detector:
The processed signal is compared with a sample of the signal source. For each data...
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DIGITAL DATA TRANSMISSION - II
Ngày tải lên :
23/10/2013, 15:15
... output of the digital summer as well as that of the Digital Signal Source was
observed on the oscilloscope. The graphs are as shown.
It is seen that there is no change in the output signal when ... :
A. Actual FSK systems use “continuos phase” signals wherein one signal starts where
the other signal stops. A VCO is used to generate such signals.
Figure 6D (a)FSK using Phase lock ... begins at the start of every data period and proceeds at the
frequency fx until the end of the data period. Then the process repeats.
Figure 6c The FSk Modulated signal
B. Cross –...
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Tài liệu Oracle Data Warehouse Developer pdf
Ngày tải lên :
10/12/2013, 05:15
... Designing, developing, managing and maintaining multiple internal data
warehouses running on Oracle Database 10g and using Oracle Warehou
se
Builder 10g Release 1 and Release 2.
Testing and QA activities for daily OWB ETLs and jobs, resolving data load issues
on an on‐going basis as well as carrying out pro‐active testing and quality control
activities to ensure data warehouse data integrity and quality is maintained.
... Bachelors De
gree required, preferably in Computer Science, or an equivalent
combination of education and experience.
At least 5 years of previous/proven experience in Database and Data Warehouse
design and development including Data Mart structures and Oracle PL/SQL
coding.
Strong knowledge of ETL tools and strong experience with Oracle Warehouse
Builder, Oracle Enterprise Manager and Oracle Warehouse Builder Execution
Manager.
... Experience with UNIX‐based operating systems, to develop shell scripts to carry
out and schedule system ETL‐ related activities including file transfers and
synchronization between multiple hosts, data import/export from flat files and
data comparison and archiving.
Experience with CRM and marketin
g data warehouse implementations.
Experience providing support for disaster recovery exercises (or actual disaster
recoveries).
...
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Tài liệu Multimedia Data Mining 3 pdf
Ngày tải lên :
10/12/2013, 09:15
... present
we take this data set as the training data; the training data set represents
the correct classification that we would like an SVM to eventually perform,
by means of separating the data with a hyperplane, ... classes are exclusive, and for each input data object,
there is one but only one output class that maps to the input data object.
However, in many multimedia data mining applications, the output space ... and dependence relationships from the data,
© 2009 by Taylor & Francis Group, LLC
72 Multimedia Data Mining
the literature to perform specific multimedia data mining tasks as exemplified
in the...
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Tài liệu Microsoft Access 2007 Data Analysis P1 pdf
Ngày tải lên :
13/12/2013, 03:15
... the gathering and storing of
data that is, where you obtain your data, how you will receive
your data, how you will store your data, and how you will access
your data when it comes time to perform ... analyzing your data.
Companion Database
The examples demonstrated throughout this book can be found in the
companion database. This sample database is located at www.wiley.com/
go/access2007dataanalysis.
Introduction ... Median 223
Ranking the Records in Your Dataset 224
Getting the Mode of a Dataset 225
Getting the Median of a Dataset 227
Pulling a Random Sampling from Your Dataset 229
Advanced Descriptive Statistics...
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Tài liệu A Concise Introduction to Data Compression- P1 pdf
Ngày tải lên :
14/12/2013, 15:15
... 1.14d.
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1.1 Variable-Length Codes 25
1.1 Variable-Length Codes
Often, a file of data to be compressed consists of data symbols ... Gordon
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Undergraduate Topics in Computer Science
Please purchase PDF Split-Merge on www.verypdf.com to remove ... definition.
A dictionary used to compress data is different. It is a list of bits and pieces of data that
have already been read from the input. When a data item is input for the first time, it
is...
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Tài liệu Reading and Writing Binary Data with Oracle pdf
Ngày tải lên :
14/12/2013, 18:16
... 9-4. Oracle LOB data type
Data
Type
Description
Blob
Oracle data type containing binary data with a maximum size of 4 GB. This
data type maps to a Byte array.
Clob
Oracle data type containing ... containing character data based on the default character set
of the server with a maximum size of 4 GB. This data type maps to a String.
NClob
Oracle data type containing character data based on ... a general discussion about reading and writing BLOB data from and
to a data source.
[ Team LiB ]
using System .Data;
using System .Data. OracleClient;
private OpenFileDialog ofd;
private...
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Tài liệu Modeling Of Data part 6 pdf
Ngày tải lên :
15/12/2013, 04:15
... attempting to reduce the value χ
2
of a fit between a set of data
points
x[1 ndata]
,
y[1 ndata]
with individual standard deviations
sig[1 ndata]
,
and a nonlinear function dependent on
ma
coefficients
a[1 ... random measurement errors, as a measured data
set, which we will symbolizeas D
(0)
. Thedataset D
(0)
isknown to the experimenter.
He or she fits the data to a model by χ
2
minimization or some ... a
true
and withouthaving
available to us an infinite universe of hypothetical data sets.
Monte Carlo Simulation of Synthetic Data Sets
Although the measured parameter set a
(0)
is not the true one,...
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Tài liệu Data Preparation for Data Mining- P11 pdf
Ngày tải lên :
15/12/2013, 13:15
...
Series data are modeled either to discover the effects of time or to look at how the data
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used for nonseries data ... main underlying “heartbeat” in the data. Smooth and
filter until it seems clear. Extract it from the data.
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... for nonseries data to be applied to series data. Can this be done, and where does it
help?
9.7.1 Numerating Alpha Values
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Tài liệu Data Preparation for Data Mining- P14 pdf
Ngày tải lên :
15/12/2013, 13:15
... the data set input signal without regard to the output signal.
It measures, among other things, how well “balanced” the input signal states are. An ideal
data set needs each of the input signals ...
Signal H(X) Entropy can evaluate the relationship between input signals and output
signals. However, it can also be used to evaluate the signals in a single variable. Recall
that when the signals ... symbolizes the input. Signal H(X) is evaluating the entropy of the input signal.
These signals originate not from a single variable but from the whole input data set.
(Recall that signal is definitely...
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Tài liệu Module 9: Data Storage Considerations pdf
Ngày tải lên :
21/12/2013, 06:18
... the data in the database is correct, and to conduct data
analysis.
Excel spreadsheets can be used as intelligent database tables; they can store
data and provide a visual analysis of the data. ...
potentially useful database functionality, such as its use as a querying tool for
databases. Also, Excel can connect to other databases and import data from
them. The imported data can then be ... Module 9: Data Storage Considerations 195
!
!!
! Overview
"
Choosing a Database Product
"
Data Storage Technologies
"
Data Storage Considerations
"
Activity 9.1: Data Quiz
"
Review
In...
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Tài liệu Edit and Update Using Data Bound Controls pdf
Ngày tải lên :
24/12/2013, 06:17
... update to the dataset, accepting changes, and sending
the changes back to the server. ADO.NET works using disconnected
data. When you create a dataset by using a data adapter, the data is
actually ... Edit and Update Data Using Bound Controls
Although viewing data is fine in some situations, the real power comes in being able to
edit the data in the text box and update the data in the server. ...
dsCustomerIndividual.xsd"xmlns:
xsd="http://www.w3.org/2001/XMLSchema"
xmlns:msdata="urn:schemas-microsoft-com:
xml-msdata"attributeFormDefault="qualified"
elementFormDefault="qualified">...
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Tài liệu Activity 7.1: Identifying Data Integrity Requirements pdf
Ngày tải lên :
17/01/2014, 09:20
... Activity 7.1: Identifying Data Integrity Requirements 43
Exercise 2:
Determining Data Integrity Requirements
In this exercise, you will determine the data integrity requirements ...
40 Activity 7.1: Identifying Data Integrity Requirements
Exercise 1:
Determining Data Validity Requirements
In this exercise, you will identify data validity requirements for the ...
Identify data validity requirements
1. Join the group to which you have been assigned by the instructor.
2. With your group, examine the physical data design on the next page.
3. Consider the data...
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Tài liệu Activity 8.1: Selecting Data Access Technologies pdf
Ngày tải lên :
17/01/2014, 09:20
... Identify the data stores and list them in the first column of the following
table.
3. For each data store, list the data access considerations that have the greatest
effect in determining a data access ... 1:
Identifying Data Access Considerations
In this exercise, you will identify and group the factors to be considered for
accessing data in a set of scenarios.
!
Identify data access considerations ...
!
List the primary considerations for choosing a data access technology.
!
Evaluate potential data access issues and choose the appropriate data access
method for a given scenario.
Before...
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