CS4710/6710 Database Systems (Spring 2016)
Instructor: Liyang Yu
Assignment #6: SQL Part 2 of 2, Due: April 7th (at class), 2016
The following is a database design about students, who may major and minor in zero or more areas, where
each area belongs to o
LAB 9: Lenses & Mirrors
Purpose
In this lab we will observe the images formed by lenses and mirrors and use the thin lens
equation to calculate their focal lengths. We will also set up a simple refracting telescope
and a microscope and compare their calcu
Overview of lecture
Quick review of min cost flow problem
An application of min cost flows
The residual network, again
The cycle canceling algorithm for solving the min
cost flow problem
Reduced costs and optimality conditions
2
The Minimum Cost Flow Prob
Overview of Lecture
Applications of network flows
shortest paths
maximum flow
the assignment problem
minimum cost flows
Linear programming duality in network flows and
applications of dual network flow problems
2
Applications of network flows
shortest
Overview of lecture
Quick review of min cost flow and optimality
conditions
Pseudoflows
The successive shortest path algorithm
A polynomial time scaling algorithm
2
The Minimum Cost Flow Problem
uij = capacity of arc (i,j).
cij = unit cost of shipping flo
6.033 Spring 2009, Quiz 3
I
Page 2 of ?
Reading Questions
1. [4 points]: Based on the description of the Witty worm in Exploiting Underlying Structure for
Detailed Reconstruction of an Internet-Scale Event, by Kumar, Paxson and Weaver (reading #18),
which
Burkes Theorem
An interesting property of an M/M/1 queue, which greatly
simplifies combining these queues into a network, is the
surprising fact that the output of an M/M/1 queue with arrival rate
is a Poisson process of rate
This is part of Burke's the
M/G/1 QUEUE
Poisson
M/G/1
General independent
Service times
Poisson arrivals at rate
Service time has arbitrary distribution with given E[X] and E[X2]
Eytan Modiano
Slide 2
Service times are independent and identically distributed (IID)
Independent of ar
RESERVATION SYSTEMS
Single channel shared by multiple users
Only one user can use the channel at a time
Need to coordinate transmissions between users
Polling systems
U1
Polling station polls the users in order
to see if they have something to send
Pollin
Multiple Access
Shared Transmission Medium
the major problem with multi-access is allocating the channel
between the users; the nodes do not know when the other nodes
have data to send
Eytan Modiano
Slide 2
a receiver can hear multiple transmitters
a tran
6.231 Dynamic Programming and Optimal Control
Midterm Exam, Fall 2011
Prof. Dimitri Bertsekas
Problem 1: (50 points)
Alexei plays a game that starts with a deck with b black cards and r red
cards. Alexie knows b and r. At each time period he draws a rando
6.231 Dynamic Programming and Optimal Control
Midterm Exam II, Fall 2011
Prof. Dimitri Bertsekas
Problem 1: (50 points)
Alexei plays a game that starts with a deck consisting of a known number
of black cards and a known number of red cards. At each time p
2.171 Quiz 2 Solutions
Problem 1:
H(s) =
a2
s 2 a2
a) Calculate the zero order hold equivalent Heq (z).
Heq (z) =
z 1 G(s)
Zcfw_
z
s
G(s)
a2
Zcfw_
= Zcfw_ 2
s(s a2 )
s
Zcfw_
Zcfw_
G(s)
A
B
= Zcfw_
+
s(s + a) s(s a)
s
G(s)
1
a
1
a
= Zcfw_
+
s
2 s(s
Exercise 1
Communications at warehouse
A warehouse scans its inventory with RFID readers that
read every item every 15 minutes. There are 100,000
items in inventory. The sweep takes one minute to
complete, so the data is bursty. The data is sent to the
d
I Baggy Bounds and Buffer Overows
1. [6 points]: t initialization time, a baggy bounds system on a 32-bit machine is supposed to set
all of the bounds table entries to 31. Suppose that, in a buggy implementation with a slot_size of 32
bytes, bounds table
Reduce-Scatter
MPI_Reduce_scatter(void *sendbuf, void *recvbuff, int *revcnt,
MPI_Datatype type, MPI_Op op, MPI_Comm comm)
MPI_REDUCE_SCATTER(sendbuf, recvbuf, recvcnt, type, op,
comm, ier)
Can be considered as a
MPI_Reduce(sendbuf, tmpbuf, cnt, type, op,
Project 2 Report Template
CSC 4320/6320 - Operating Systems
Dr. Xiaolin Hu
Spring 2016
Your project report should include the following three parts: 1) a cover page; 2) main content; 3)
source code. The main content should be 5-7 pages, Times New Roman fo
/*
* A skeleton for checking a Sudoku puzzle through multithread
*/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#define NUMBER_OF_THREADS
#define PUZZLE_SIZE
15 / we use 15 threads in this project
9 / it is a 9x9 puzzle
void *column(void *
Current & Resistance Lab:
Electric Current & Electric Power
Part 1: Current vs Voltage
If an electric current runs through a conductor, how does that current depend on the potential
difference across it? Is the current proportional, logarithmic, quadratic
Dr. Cherif Salama
Faculty of Media Engineering
and Technology
CSEN 402 Computer Organization and System Programming
Practice Assignment 5
Spring 2014
NOT to be submitted
To be discussed during tutorial sessions
Exercise 1:
An instruction at address 021 in
PHYS 2212L
LAB 3
Current & Resistance
Purpose
In the first part of this laboratory we will develop the relationship between current,
resistance and voltage in an electric circuit known as Ohms Law. This law is basic in the
analysis of electric circuits. I
Phys 2212L
LAB 4
Direct Current Circuits
Purpose
In this laboratory, we will set up the three basic types of electric circuits: a series, a
parallel and a combination circuit. We will use Ohms Law and Kirchhoffs rules to
determine the currents through the
Dr. Cherif Salama
Faculty of Media Engineering
and Technology
CSEN 402 Computer Organization and System Programming
Practice Assignment 3
Spring 2014
NOT to be submitted
To be discussed during tutorial sessions
The rest of the chapters exercises are to be
Software Engineering - Reuse
Never Reprogram Again
GM Confidential
Logistics
There are two LMS courses we are attending today
50883 - Proper use of 3rd party materials/IP
48801 Introduction to Software Engineering Reuse
To get credit for the Reuse cla
General Ledger
ACCOUNT:
Date
ACCOUNT NO.
1/1/2010
Cash In Bank Beginning Balance:
1/2/2010
1/5/2010
Pay telephone bill check 1001
Deposit from Cash Sales
#
Post.
Ref.
Description
Debit
Credit
1,000
Balance
#
500
1,000
500
1,500
Ending Balance
Total Debits
CSC 4210
Fall 2017
Name: _
SAMPLE Quiz #1
In accordance with both the letter and spirit of the University Policy on Academic Honesty, I
have neither given nor received assistance on this examination.
SIGNATURE: _
Make sure to justify all answers show all
Massachusetts Institute of Technology
Department of Electrical Engineering and Computer Science
6.243j (Fall 2003): DYNAMICS OF NONLINEAR SYSTEMS
by A. Megretski
Take-Home Test 1 Solutions1
Problem T1.1
Find all values of R for which the function V : R2 R