Answer:
Systems implementation & evaluation
What is systems implementation?
What are the tools for physical systems design?
What are the issues to consider before an information system is operational?
What are the key indicators of a quality system?
What are the techniques for systems evaluation?
Systems implementation is the process of:
defining how the information system should be built (i.e., physical system design),
ensuring that the information system is operational and used,
ensuring that the information system meets quality standard (i.e., quality assurance).
Systems design
Conceptual design – what the system should do
Logical design – what the system should look to the user
Physical design – how the system should be built
Physical system design using structured design approach:
à To produce a system that is easy to read, code, and maintain
1. Factoring: decomposition
2. Span of control: 9 subordinate modules
3. Reasonable size: 50-100 LOC
4. Coupling: minimize inter-module dependency
5. Cohesion: single module functionality
6. Shared use: multiple calls to lower level modules from different bosses
Structured design tools
· Organization of programs and program modules (structure chart)
· Processing logic specification in each module (pseudocode)
Structure chart – to show graphically
how the various program parts/modules of an information system are physically organized hierarchically
how the modules communicate with each other through data couple (data exchange) and flag (control/message)
how the modules are related to each other in terms of sequence, selection, and repetition
Clocks (also called timers) are essential to the operation of any multiprogrammed system. They maintain the time of day, and prevent one process from monopolizing the CPU. How are clocks implemented
Answer:
The answer is below
Explanation:
The clock in the CPU is made of three elements including the following:
1. Crystal oscillator
2. A counter
3. A holding register
All these clock elements combined and generate interrupts at known periods or duration.
However, the clock has a powered battery back up which is implemented with a form of low-power circuitry similar to that of digital watches.
The purpose is to prohibit the current time from being failed when the computer is powered off or shut down.
Write a recursive method that receives a string as a parameter and recursively capitalizes each character in the string (change a small cap to a large cap, e.g. a to A, b to B, etc) as following: capitalize the first letter from the string, then calls the function recursively for the remainder of the string and in the end, build the capitalized string. For example, for "java", will capitalize the first letter to "J"(base case), calls the method recursively for the reminder of the string "ava" (reduction), and after recursion/reduction is over it and returns "AVA" will build a new string from "J" and "AVA" and return "JAVA" to the calling method.
Write this algorithms in java source code plz.
Answer:
String words[]=str.split("\\s");
String capitalizeWord="";
for(String w:words){
String first=w.substring(0,1);
String afterfirst=w.substring(1);
capitalizeWord+=first.toUpperCase()+afterfirst+" ";
}
return capitalizeWord.trim();
Explanation:
Define the word you are trying to capitalize and split it into an array.
String words[]=str.split("\\s");
Create a string for the capital output to be created as
String capitalizeWord="";
Capitalize the word using the "first.toUpperCase()" and "afterfirst" functions
for(String w:words){
String first=w.substring(0,1);
String afterfirst=w.substring(1);
capitalizeWord+=first.toUpperCase()+afterfirst+" ";
}
Marketing có phải là bán hàng hay không? Giải thích?
Answer:
Sự khác biệt giữa bán hàng và tiếp thị là bán hàng tập trung vào làm việc trực tiếp với khách hàng tiềm năng để khiến họ chuyển đổi, trong khi tiếp thị tập trung vào việc khơi dậy sự quan tâm đến sản phẩm của bạn.
Answer:
Marketing không phải là bán hàngg
Explanation:
Nó là công cụ hỗ trợ cho việc bán hàng
Question 1
The decimal number system problem solving question
Statement: Several digits '8' are written and some '+" signs are interested
to get the sum 1000. Figure out how it is done.
Answer:
888 + 88 + 8 + 8 + 8 = 1000
Explanation:
Required
Add up to 1000 using only digit 8
There is no straight way to answer this question; so, we make use of trial by error method to arrive at our solution.
After several trials, I found out that:
888 + 88 + 8 + 8 + 8 = 1000
Which orientation style has more height than width?
Answer:
"Portrait orientation" would be the correct answer.
Explanation:
The vertical picture, communication as well as gadget architecture would be considered as Portrait orientation. A webpage featuring portrait orientation seems to be usually larger than large containing lettering, memo abases as well as numerous types of content publications.One such volume fraction also becomes perfect for impressionism depicting an individual from either the top.Thus the above is the correct answer.
In a relational database, the three basic operations used to develop useful sets of data are:_________.
a. select, project, and join.
b. select, project, and where.
c. select, from, and join.
d. select, join, and where.
In a relational database, the three basic operations used to develop useful sets of data are:
[tex]\sf\purple{a.\: Select, \:project,\: and\: join. }[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}[/tex]
The basic operations used to develop useful sets of data in relational database are Select, Project and Join.
The Select and Project are of important use in selecting columns or attributes which we want to display or include in a table. The join function allows the merging of data tables to form a more complete and all round dataset useful for different purposes.Hence, the basic operations are select, project, and join.
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Create a program that simulates a race between several vehicles. Design and implement an inheritance hierarchy that includes Vehicle as an abstract superclass and several subclasses
Answer:
Explanation:
The following program is written in Java. Since there was not much information provided in the question I created a Vehicle superclass with a couple of subclasses for the different types of vehicles (motorcycle, sedan, truck). Each one having its own unique attributes. The vehicle class also has an attribute for the position of the vehicle in the race.
class Vehicle {
int year, wheels, position;
public Vehicle(int year, int wheels, int position) {
this.year = year;
this.wheels = wheels;
this.position = position;
}
public int getYear() {
return year;
}
public void setYear(int year) {
this.year = year;
}
public int getWheels() {
return wheels;
}
public void setWheels(int wheels) {
this.wheels = wheels;
}
public int getPosition() {
return position;
}
public void setPosition(int position) {
this.position = position;
}
}
class Motorcycle extends Vehicle {
String manufacturer;
double speed;
public Motorcycle(int year, int wheels, int position) {
super(year, wheels, position);
}
public Motorcycle(int year, int wheels, int position, String manufacturer, double speed) {
super(year, wheels, position);
this.manufacturer = manufacturer;
this.speed = speed;
}
public String getManufacturer() {
return manufacturer;
}
public void setManufacturer(String manufacturer) {
this.manufacturer = manufacturer;
}
public double getSpeed() {
return speed;
}
public void setSpeed(double speed) {
this.speed = speed;
}
}
class Sedan extends Vehicle {
int passengers;
String manufacturer;
double speed;
public Sedan(int year, int wheels, int position) {
super(year, wheels, position);
}
public Sedan(int year, int wheels, int position, int passengers, String manufacturer, double speed) {
super(year, wheels, position);
this.passengers = passengers;
this.manufacturer = manufacturer;
this.speed = speed;
}
public int getPassengers() {
return passengers;
}
public void setPassengers(int passengers) {
this.passengers = passengers;
}
public String getManufacturer() {
return manufacturer;
}
public void setManufacturer(String manufacturer) {
this.manufacturer = manufacturer;
}
public double getSpeed() {
return speed;
}
public void setSpeed(double speed) {
this.speed = speed;
}
}
class Truck extends Vehicle {
int passengers;
String manufacturer;
double speed;
public Truck(int year, int wheels, int position) {
super(year, wheels, position);
}
public Truck(int year, int wheels, int position, int passengers, String manufacturer, double speed) {
super(year, wheels, position);
this.passengers = passengers;
this.manufacturer = manufacturer;
this.speed = speed;
}
public int getPassengers() {
return passengers;
}
public void setPassengers(int passengers) {
this.passengers = passengers;
}
public String getManufacturer() {
return manufacturer;
}
public void setManufacturer(String manufacturer) {
this.manufacturer = manufacturer;
}
public double getSpeed() {
return speed;
}
public void setSpeed(double speed) {
this.speed = speed;
}
}
Tạo thủ tục có tên _Pro04 để trả về số lượng tổng thời gian tham gia dự án Y của nhân viên có mã số X, với X là tham số đầu vào, Y là tham số đầu ra
Answer:
nigro
Explanation:
What are interpersonal skills for non-technical user
Answer:Non-Technical Skills ('NTS') are interpersonal skills which include: communication skills; leadership skills; team-work skills; decision-making skills; and situation-awareness skills.
Explanation:
我对汉语的兴趣 làm đoạn văn theo đề trên
Answer:
which language is this
Explanation:
Chinese or Korea
Telecommunications and software development are examples of information technology careers.
True
False
Answer:
True
Explanation:
Information technology may be described as the use of systems to aid application designs capable of sending and receiving information and building a communication pathway for individuals and companies. It also involves retrieving, storing large chunks of information and organizational data usually in databases to fast track the seamless functioning of the organization's system. The information technology ecosystem is very broad from those charged with ensuring effective communication such as telecommunications platforms and those who build and develop technologies for effective communication and data storage. Hence, both Telecommunications and software development are examples of information technology careers.
HELP ITS A TESTTT!!!Which symbol shows auto correct is in use?
A-a white light bulb
B-A green plus sign
C-A flashing red circle
D-A yellow lightning bolt
Answer:
D
Explanation:
A compound Boolean expression created with the __________ operator is true only if
both of its subexpressions are true.
a. and
b. or
c. not
d. both
Answer:
the answer is AND
Explanation:
The condition is " both of its sunexpressions are true"
So OR us not the answer. Not and Borh are not the proper Boolean language.
what is said to be the first mechanical calculator
Answer:
Pascaline, also called Arithmetic Machine, the first calculator or adding machine to be produced in any quantity and actually used. The Pascaline was designed and built by the French mathematician-philosopher Blaise Pascal between 1642 and 1644.
Explanation: hope that helps
Pascaline, also called Arithmetic Machine.
A python code only runs the except block when _____. Group of answer choices all the statements in the try block are executed an error occurs in the preceding try block the programmer manually calls the except block an error occurs anywhere in the code
Answer:
Python only running exception block when try block fails
Explanation:
i do cyber security and i was learning this in high school
In Python, try and except statements are used to catch and manage exceptions. Statements that can generate exceptions were placed within the try clause, while statements that handle the exception are put within the except clause.
An exception should be caught by except block, which is used to test code for errors that are specified in the "try" block. The content of the "except" block is executed if such a fault/error appears.In Python, the exception block only runs when an error occurs in the try block.Therefore, the answer is "try block fails ".
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Q. 2. What will be the output of the following code?
//printf("Hello\n");
printf("Girls");
Answer:
Just two outputs \n a line break so:
Hello
Girls
What would be the result of the flooding c++ cide assuming all necessary directive
Cout <<12345
Cout<
cout <
Cout<< number <
Answer:
See explanation
Explanation:
The code segment is not properly formatted; However, I will give a general explanation and a worked example.
In c++, setprecision are used to control the number of digits that appears after the decimal points of floating point values.
setprecision(0) means; no decimal point at all while setprecision(1) means 1 digit after the decimal point
While fixed is used to print floating point number in fixed notation.
Having said that:
Assume the code segment is as follows:
number = 12.345;
cout<<fixed;
cout<<setprecision(0);
cout<<number <<endl;
The output will be 12 because setprecision(0) implies no decimal at all; So the number will be rounded up immediately after the decimal point
Which of followings are true or false?
a. Swapping two adjacent elements that are out of place removes only one inversion.
b. Any algorithm that sorts by exchanging adjacent elements requires O(n log n)
c. Shellsort with a proper distance function is faster than mergesort for a very large input (like sorting 1 billion numbers).
d. The average-case performance of quick sort is O(NlogN), but the best-case performance of quick sort is O(N) for a pre-sorted input.
e. The number of leaves in a decision tree for sorting n numbers by comparisons must be 2n.
f. The height of a decision tree for sorting gives the minimum number of comparisons in the best case.
g. Any decision tree that can sort n elements must have height Big-Omega (n log n).
h. Bucket-sort can be modeled by a decision tree.
Answer:
Explanation:
a. Swapping two adjacent elements that are out of place removes only one inversion.
Answer: True
b. Any algorithm that sorts by exchanging adjacent elements requires O(n log n)
Answer: False
c. Shellsort with a proper distance function is faster than mergesort for a very large input (like sorting 1 billion numbers).
Answer: True
d. The average-case performance of quick sort is O(NlogN), but the best-case performance of quick sort is O(N) for a pre-sorted input.
Answer: True
e. The number of leaves in a decision tree for sorting n numbers by comparisons must be 2n.
Answer: False
f. The height of a decision tree for sorting gives the minimum number of comparisons in the best case.
Answer: True
g. Any decision tree that can sort n elements must have height Big-Omega (n log n).
h. Bucket-sort can be modeled by a decision tree.
Answer: True
Suppose now there are 80 pairs of flows, with ten flows between the first and ninth rack, ten flows between the second and tenth rack, and so on. Further suppose that all links in the network are 10 Gbps, except for the links between hosts and TOR switches, which are 1 Gbps.
Required:
a. Each flow has the same data rate; determine the maximum rate of a flow.
b. For the same traffic pattern, determine the maximum rate of a flow for the highly interconnected topology.
c. Now suppose there is a similar traffic pattern, but involving 20 hosts on each rack and 160 pairs of flows. Determine the maximum flow rates for the two topologies.
Answer:
Explanation:
Given that:
The no of flow pairs = 80
Each link's capacity = 10 Gbps
Link capacity amongst TOR switches and hosts = 1 Gbps
Because each connection is distributed among all flows, each flow crossing the same link distributes the link's capacity with the other flows. The connection capacity needed by each flow in the network is determined by the highest flow rate.
Maximum rate flow = [tex]\dfrac{link's \ capacity}{no \ of \ flow \ pairs}[/tex]
[tex]= \dfrac{10 \ Gbps}{80}[/tex]
Since 1 Gbps = 1000 Mbps
[tex]= \dfrac{10000}{80}[/tex]
= 125 Mbps
Hence, maximum rate flow = 125 Mbps
b.
Each switch at Tier-1 is connected to each and every switch at Tier-2 in the highly integrated structural topology. As a result, there are n-disjoint routes between tier-2 and tier-1 switches.
Number of paths between tier-1 and tier-2 is 4, thus, there exist four paths from tier-1 switch to tier 2.
The capacity whereby all data routes convey is determined by the maximum rate of flow.
number of available paths = 4
Each link's capacity = 10 Gbps
Maximum flow rate = 4 × 10 Gbps
Maximum flow rate = 40 Gbps
c.
Because each connection is distributed between all flows, each flow crossing a similar link distributes the link's capacity with other flows.
number of flow pairs = 160
Each link's capacity = 10 Gbps
maximum rate of flow = 10000 Mbps / 160
= 62.5 Mbps
For 160 flow pairs, maximum flow rate = 62.5 Mbps
Each switch in Tier-1 communicates with each switch in Tier-2 in the highly linked topology network. As a result, n-disjoint routes between tier-2 and tier-1 switches are possible. As there exist 20 hosts engaged in the network around each host, the number of routes from either a tier-1 switch or tier-2 switches is 20.
here;
no of paths = 20
each link's capacity = 10 Gbps
Maximum flow rate = 20 × 10
= 200 Gbps
As such, with 160 pairs of flow, maximum flow rate = 200 Gbps
What do application in productivity suites have in common
Answer:
The function of the suites application is to create presentations and perform numerical calculations.
Explanation:
Please answer
NO LINKS
Answer:
Please find the attached file for the complete solution:
Explanation:
create slider in wordpress
Answer:
Adding a WordPress Slider in Posts/Page
Open the post editor, select the location where you want to add the slider, and click on the Add Slider button next to the media uploader. You will see boxes for each slider you have created. Choose the slider you want to insert and then click Insert Slider button.
9- Which type of view is not present in MS
PowerPoint?
(A) Extreme animation
(B) Slide show
(C) Slide sorter
(D) Normal
Answer:
A.Extreme animation
hope it helpss
You've decided to build a new gaming computer and are researching which power supply to buy. Which component in a high-end gaming computer is likely to draw the most power
Answer:
Following are the solution to the given question:
Explanation:
In this order, it is typically the GPU and CPU. The most important way to consider is to look at the details of the components to enhance watts. Add up to 100 watts so make sure it was safe and ok. Just buy a PSU with an extra 100 watts of leeway for your system. This is indeed a slight price difference.
(Ramanujan's Taxi) Srinivasa Ramanujan indian mathematician who became famous for his intuition for numbers. When the English mathemematician G.H. Hardy came ot visit him in the hospital one day, Hardy remarked that the number if his taxi was 1729, a rather dull number. To which Ramanujan replied, "No, Hardy! It is a very interesting number. It is the smallest number expressible as the sum of two cubes in two different ways." Verify this claim by writing a program Ramanujan.java that takes a command-line argument N and prints out all integers less than or equal to N that can be expressed as the sum of two cubes in two different ways. In other words, find distinct positive integers a, b, c, and d such that а3 + b3 = c3 - d3. Hint: Use four nested for loops, with these bounds on the loop variables: 0 < a < 3√N, a < b < 3√N - a3, a < c < 3√N and c < d < 3√N - C3; do not explicitly compute cube roots, and instead use x . x *x < y in place of х < Math.cbrt (y).
$ javac Ramanujan.java
$ java Ramanujan 40000
1729 = 1"3 + 12^3 = 9^3 + 10"3
4104 = 2^3 + 16^3 = 9^3 + 15^3
13832 = 2^3 + 24^3 = 18^3 + 20^3
39312 = 2^3 + 34^3 = 15^3 + 33^3
32832 = 4^3 + 32^3 = 18^3 + 30^3
20683 = 10^3 + 27^3 = 19^3 + 24^3
Answer:
Here the code is given as follows,
Explanation:
Code:
public class Ramanujan {
public static void main(String[] args) {
// check cmd argument
int n = Integer.parseInt(args[0]);
// checking a^3 + b^3 = c^3 + d^3
// outer loop
for (int a = 1; (a*a*a) <= n; a++) {
int a3 = a*a*a;
// no solution is possible, since upcoming a values are more
if (a3 > n)
break;
// avoid duplicate
for (int b = a; (b * b * b) <= (n - a3); b++) {
int b3 = b*b*b;
if (a3 + b3 > n)
break;
// avoid duplicates
for (int c = a + 1; (c*c*c) <= n; c++) {
int c3 = c*c*c;
if (c3 > a3 + b3)
break;
// avoid duplicates
for (int d = c; (d * d * d) <= (n - c3); d++) {
int d3 = d*d*d;
if (c3 + d3 > a3 + b3)
break;
if (c3 + d3 == a3 + b3) {
System.out.print((a3+b3) + " = ");
System.out.print(a + "^3 + " + b + "^3 = ");
System.out.print(c + "^3 + " + d + "^3");
System.out.println();
}
}
}
}
}
}
}
What type of editor is used to edit HTML code?What type of editor is used to edit HTML code?
For learning HTML we recommend a simple text editor like Notepad (PC) or TextEdit (Mac).
mark me brainliestt :))
Answer:
If you want to use HTML editor in windows, you can use notepad. And if you want to use HTML editor on your phone than you need to install any editor on your phone.
Explanation:
If you want to use another app than notepad in pc, laptop, mac, OS or Linux, you can download a editor known as Visual Studio Code. If you want to do another language you can also do it in it. You can do all programming languages in it.
S.B. manages the website for the student union at Bridger College in Bozeman, Montana. The student union provides daily activities for the students on campus. As website manager, part of S.B.'s job is to keep the site up to date on the latest activities sponsored by the union. At the beginning of each week, he revises a set of seven web pages detailing the events for each day in the upcoming week. S.B. would like the website to display the current day's schedule within an aside element. To do this, the page must determine the day of the week and then load the appropriate HTML code into the element. He would also like the Today at the Union page to display the current day and date.Complete the following:Use your editor to open the bc_union_txt.html and bc_today_txt.js files from XX folder. Enter your name and the date in the comment section and save them as bc_union.html and bc_today.js. DONEGo to the bc_union.html file in your editor. Directly above the closing tag, insert a script element that links the page to the bc_today.js file. Defer the loading of the script until after the rest of the page is loaded by the browser. Study the contents of the file and save your changes. DONEGo to the bc_today.js file in your editor. At the top of the file, insert a statement indicating that the code will be handled by the browser assuming strict usage. Note that within the file is the getEvent() function, which returns the HTML code for the daily events at the union given a day number ranging from 0 (Sunday) to 6 (Saturday). "use strict";Declare the thisDate variable containing the Date object for the date October 12, 2018. var thisDate = new Date("October 12, 2018");Declare the dateString variable containing the text of the thisDate variable using local conventions. var dateStr = thisDate.toLocaleDateString();Declare the dateHTML variable containing the following text string
An exhibition from over 60 items in the BC permanent collection.
\Location: Room A414
\Time: 12 am – 4 pm
\Cost: free
\ \ Bridger Starlight Cinema \Recent, diverse, and provocative films straight from the art house. 35mm.
\Location: Fredric Whyte Play Circle
\Time: 7 pm – 10 pm
\Cost: $3.75 MWU students, Union members, Union staff. $4.25 all others
\ \ "; break; case 1: // Monday Events eventHTML = " \ Monday Billiards \Play in the BC Billiards league for fun and prizes
\Location: Union Game Room
\Time: 7 pm – 11 pm
\Cost: $3.75 for registration
\ \ Distinguished Lecture Series \Cultural critic Elizabeth Kellog speaks on the issues of the day.
\Location: Union Theater
\Time: 7 pm – 9 pm
\Cost: free, seating is limited
\ \ "; break;Answer:
hi
Explanation:
i did not known answers
What is the name given to software that decodes information from a digital file so that a media player can display the file? hard drive plug-in flash player MP3
Answer:
plug-in
Explanation:
A Plug-in is a software that provides additional functionalities to existing programs. The need for them stems from the fact that users might want additional features or functions that were not available in the original program. Digital audio, video, and web browsers use plug-ins to update the already existing programs or to display audio/video through a media file. Plug-ins save the users of the stress of having to wait till a new product with the functionality that they want is produced.
Answer:
B plug-in
Explanation:
Edge2022
The _________ attack exploits the common use of a modular exponentiation algorithm in RSA encryption and decryption, but can be adapted to work with any implementation that does not run in fixed time.
A. mathematical.
B. timing.
C. chosen ciphertext.
D. brute-force.
Answer:
chosen ciphertext
Explanation:
Chosen ciphertext attack is a scenario in which the attacker has the ability to choose ciphertexts C i and to view their corresponding decryptions – plaintexts P i . It is essentially the same scenario as a chosen plaintext attack but applied to a decryption function, instead of the encryption function.
Cyber attack usually associated with obtaining decryption keys that do not run in fixed time is called the chosen ciphertext attack.
Theae kind of attack is usually performed through gathering of decryption codes or key which are associated to certain cipher texts The attacker would then use the gathered patterns and information to obtain the decryption key to the selected or chosen ciphertext.Hence, chosen ciphertext attempts the use of modular exponentiation.
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What is the function of hard disk Which Computer was the first Computer to be developed
Answer:
The hard disk is a storage device designed to permanently store data, being secondary to the software in the computer. The ENIAC was the first modern computer to be developed and built, completing construction in 1946 and taking three years to build, but if ancient computers (people who computed by hand) are factored in, then the first computer would be way back in time, perhaps even extending to the B.C. years.
Explanation:
Hope this helped!