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Databases Questions and Answers January 25, 2021

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Which of the following functions f(x,y,z) can be expressed as an affine transformation (i.e. f(x,y,z)=Axyz1, for some 4 by 4 matrix A). If it is possible compute the matrix A, else explain briefly why it is not possible. a) f(x,y,z)=x+y+1y2x+1 b) f(x,y,z)=3x5z+yx23z+5 c) f(x,y,z)=x+yzx+y+zx+yzxyx+yzxz+y
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Input Cursor is a pointer to the current position in an input file True False
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Suppose you have coins of denominations 1, 3 and 4. You use a greedy algorithm, in which you choose the largest denomination coin which is not greater than the remaining sum. For each of the following sums, just write YES if it will produce an optimal solution or NO if it won't. For example, for the sum 200, it will produce an optimal solution.
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Given the bectors created above in part II , which of the following commands will print a black dotted horizontal line

In Javascript please Create a Puppy class with properties name and height passed to the constructor. 1 2 /* Your solution goes here */ 3 class Puppy{ 4 constructor(str,ht) { 5 this.puppyname str; 6 this.height ht; 7 } 8 } 9 10 mypuppy = new Puppy("Buddy",3.4); * Testing value of name with Puppy("Buddy", "1 feet") Yours and expected differ. See
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(a) Write a function function [u,T] = BackEuler(f,df,a,b,N,ya,maxiter,tol) that implements the Backward Euler method for a scalar differential equation y' (t) = f(t, y). Here, N is the number of steps in the discretization and df refers to the function fy(t, y).To calculate ui+1 at each step, run Newtons method with ui as the initial guess.

A) B) C) A club has 10 members.How many ways are there to choose 3 members of the club to serve on an executive committee? O 720 O 120 80 O 60
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Time Complexity of a function with a variety of loops: Fun ( int array A of size n ) { for ( int for ( int j = 1 ; j n ; j * * = 3 ) { / / log 3 n int a = i + j ; ? ? c } for ( int int a = j ; ? ? c } } for ( int i = 1 ; i n ; i + = 4 ) for ( int k = 2 ; k n ; k = k 2 ) { int a = i + k ; } } }
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I am trying to use python to automate my emails. I have set up lists with phares like "confirmation number" and I want python to scan the email and if it has that phrase move that email to a folder named "Purchases." I am struggling with the loop part of the code on this. Can you help me ? Example name of of my list is "Search _ Purchase" and

Question 4 of 4\ 5 Points\ Find a few job postings online within the sports industry (and hopefully are of interest to you). How do the topics in this course play a role in how successful you could be in those positions should you pursue them? THIS IS A FIVE (5) POINT QUESTION SO GIVE A 3-4 PARAGRAPH ANSWERI\ Maximum number of characters
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Use the CKY, algorithm to check if the the strings babaab and bababb are in the language given in the example. Use the CKY, algorithm to check if the the strings babaab and bababb are in the language given in the example
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Written responses MUST follow the following 3 content section format Define the concept, term or system. Describe how it functions in your words. Describe an example of the concept, term or system. The examples are those discussed : PCCC , Amazons Logistic & warehousing system, ShopRite ,McDonalds then Your conclusion Define and describe with a

python solve using python 2. [4 points] Verify: a sin(B0) + b cos(BO) = Va2 + b?sin(B + C), where C = arctan) and a> 0
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can you create a UML diagram from the following javascript code: import React, { useState } from 'react'; import { View, TextInput, TouchableOpacity, Text, StyleSheet,Alert } from 'react - native'; import { useNavigation } from ' @react - navigation / native ' ; import { createUserWithEmailAndPassword } from 'firebase / auth ' ; import { auth }

this is all i have + this Part 1: Complete the table below: 1) Start day is the latest finish day of all predecessors. 2) Finish day is start day + duration. 3) Slack is computed with a backwards pass, beginning at F (Finish). 4) If a task has multiple predecessors, one or more of the predecessors may have slack> 0. Tasks which are the only
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According to the text, the term for the broad goal of promoting the sustenance and flourishing of life is . . . Question 2 options: a ) development. b ) well - being. c ) growth. d ) productivity. e ) security.

\\\\delta =(PA)/(LE)+\\\\alpha L\\\\Delta T, , is this equation consistent? (circle one) Yes I No\ a. \\\\delta = displacement [in];L= length [mm];E=modulus of elasticity [Pa];A=area[m^(2)] ;\ \\\\Delta T= Temperature change [\\\\deg R];P= pressure [mmHg];\\\\alpha = coefficient of thermal expansion (1)/(K) 3) =LEPA+LT, is this equation
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(a) (6%) When does overflow happen, in other words, at which value of i in the for loop? (i = ?). Lets call that OFI (overflow i) (b) (6%) Why does the overflow happen for that OFI (why there is no overflow for i (c)(8%) Why when overflow happens, the value displayed is -1474836480? (d) (6%) Why the next value after overflow happens is
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uestion # 20 (Application of Sequence Let an denote the number of times the statement x = x +1 is executed in the following loop. Write an in summation form. a) for i = 1 to n do for i I to n do for j-1 to i do x=x+1 for i-1 to i do for k= 1 to i do x=x+1 for i=1 to n do for i= I to n do for j = l to ido for j = 1 to i do for k = l to j do for k=
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Please complete question with C++ coding Given a pointer to a variable a, the task is to complete the function updateVar() which will increment the value of the variable by 10. The function does not returns anything.

I am new to javascript. The assignment is below. I have attached what I have completed so far. I have the page working but the buttons only work the first time through and I can't seem to figure out why. My code is attached. Part 1; a simple slide show: Create a Web document called l5p1.html that displays one of the images from lab 2 in
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3. Suppose we execute the Chomsky-normal-form conversion algorithm of Section 7.1.5 (p.272). Let A BC0DE be one of the productions of the given grammar, which has already been freed of -productions and unit productions. Suppose that in our construction, we introduce new variable X, to derive a terminal a, and when we need to split the right side
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In this homework assignment, you have to implement the twoStacks class that represent two stacks and template your class. Implementation of twoStacks should use only one array, i.e., both stacks should use the same array for storing elements. Following functions must be supported by twoStacks . void push1(T x) > pushes x to first stack void

2. (40 pts) Given the a directed graph as shown below, answer the following questions: 5 2 4 3 (a) (10 pts) What is the adjacency list representation of this graph? (b) (10 pts) What is the adjacency matrix representation of this graph? (c) (10 pts) Is the graph strongly connected? Why? (d) (10 pts) Is the graph weakly connected? Why? 3. (10 pts)
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A printer falls under which category of computer hardware?

QUESTION 1 In a phenomenon called than a single person or even a small committee of experts. some argue that large numbers of people can make better decisions about a wide range of topics or prod o the wisdom of crowds O outsourcing crowdsourcing social networking QUESTION 2 The process of sourcing goods and materials, negotiating with suppliers,
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Please help me with fixing this java code: import java.io.*; import java.util.*; public class HW_practice{ private static int[][] array; private static int row, col; public static void readArray(){ String fileName = "example.txt"; BufferedReader br = null; FileReader fr = null; try{ fr = new FileReader(fileName); br = new BufferedReader(fr);

The specialist whose duties fall into the areas of planning, implementation, operation, and security is the A data administrator database specialist systems analyst D database administrator
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Write the fhe following in c programm Order Rates: Knife, 1, 125, PA Colander ,2 ,25.95 ,NJ Cutting Board, 3 , 29.99 , NY Measuring Cup,4,15,PA Measuring Spoon,5,10,NY Grater,6,20.99,PA Blender,7,100,PR Tax rate: Alabama,AL,4.000% Alaska,AK,0.000% Arizona,AZ,5.600% Arkansas,AR,6.500% California,CA,7.250% Colorado,CO,2.900% Connecticut,CT,6.350%
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The integers n and k are twin primes if both integers are primes and n = k + 2 or n = k - 2. The file primes.csv contains the prime numbers between 2 and 10,000 numbered according to their position in the sequence of prime numbers. Develop an interactive program that accepts an integer n between 3 and 1229 (referred to as a query). The program
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Consider the arrival time and burst time of six jobs specified in the table below. a . Apply the Priority Non - preemptive operating system scheduling algorithm. b . Given Priority, the lower the value, the higher the priority. c . Generate a table to identify the process id , exit time, turnaround time, waiting time, and response time. d .
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Create a main class with a go method, as described previously. Create a LinkedList of Strings with at least 3 Strings in it. Using an enhanced For loop, print the strings in the list. Create a HashMap of String and Integer with at least three key-value pairs in it. Using an enhanced For loop, print the entries in the map. Create a TreeSet of

Told to use Microsoft Access. ACCESS REVIEW LAB Name of Database: Sci-Fi Bookstore Tables: Table Name: Book Book Author Units On Hand Price Year Published Publisher Code ook Code Title 0488 0533 Albert's Way H Brawley 1019 10 $5 95 45 $4.75 14 $5.50 8 $5 95 17 $6.95 26 $4 95 5 $4.75 1236.75 26 $9.95 75 35.75 1997 obot Wars H Brawley 1996 BB 2000
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Compare and contrast the different types of project reviews. Speculate as to which project review would have a more sustainable impact in regard to the evaluation of a project. The project reviews are: 1) Detailed technical reviews; 2) Project sunset review; 3) Project go/no-go review; 4) Plan review; 5) Progree Reviews

solve using python 7. [5 points] Eliminate the parameter for the following set of parametric equations to find the cartesian equation. Hint: use algebraic manipulation. Sketch the graph of the cartesian curve: x = * = 3 sin).- -40 [t s(!). y = 0
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MATLAB QUESTION Write a function which will be given two vectors, Needles and Haystack. Needles is a vector of numbers which may or may not be present in Haystack. Your function will return a vector in which each value represents the number of times each of the numbers in Needles appears in Haystack. Your resultant vector will be the same size as

According to studies, the hardware is the highest value component of an e - commerce website budget.Question 4 4 Select one:TrueFalse

QUESTION ONE: CASE STUDY: BRIDGE CO. SOFTWARE PROCUREMENT Introduction The following is an interview with Mick Kazinski, a senior marketing executive with Bridge co. a Deelandbased construction company. It concerns their purchase of Custcare, a Customer Relationship Management (CRM) software package written by the Custcare Corporation, a software

in 45 minutes please Select the Correct Answer To interface 1.5us access time memory chip with 5MHz CLK 8086 processor, need to insert wait states. 4 O 2 3.5 O 3
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class Triangle: def __init__(self): self.base = 0 self.height = 0 def set_base(self, user_base): self.base = user_base def set_height(self, user_height): self.height = user_height def get_area(self): area = 0.5 * self.base * self.height return area def print_info(self): print(f'Base: {self.base:.2f}') print(f'Height: {self.height:.2f}')
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Python Assignment Reading and Writing Files Use comments to decribe your code Open a file. Type the following code: fhand = open(aFile.txt) print fhand What do you see? To see the contents of the file type: for line in fhand: print line Counting tokens (in our case, words) in a file words = 0 fhand = open('aFile2.txt') for line in fhand: print

C++ Chapter 11 defined the class boxType by extending the definition of the class rectangleType. In this exercise, derive the class boxType from the class rectangleType, defined in Exercise 1 , add the functions to overload the operators +,, *, ==, !=, , and pre- and post-increment and decrement operators as members of the class boxType. Also

1 0 pts . Write a python function to smooth your data with a moving average. The function should return an array that is the moving average of an input array of data that contains noise or errors in it . 1 0 pts . Write a python function to return an array that is the first derivative of an array with respect to another array. The first input
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What firewall approach is shown in the figure, assuming the firewall has three network cards? Switch Internet Border firewall Unified threat management Screened subnet Bastion host
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Which of the following issues do we try to address when designing database tables? Data integrity Data quality Ensuring each table contains data about only one theme Limiting duplicated data Each of the above statements are true
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Please dont skip any steps, everytime i try to commit it does not work. Task 1 , under master branchgit a . Open GitBash or VS Code over your personal project folder e . g "Lab 3 MyApp" b . Add your contacts using [ git config - global user.name 'your name' ] and [ git config - global user.email "your email' ] and use "git config - list' command
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Concepts of Database Management (pg 174 - #10 and #12) 10. Consider a Student table containing StudentNum, StudentName, students StudentMajor, students AdvisorNum, students AdvisorName, students AdvisorOfficeNum, students AdvisorPhone, students NumCredits, and stu- dents Category (freshman, sophomore, and so on). List the functional dependencies

Problem 1: Write an automobile class. Your class should have the following variables and methods ( see picture ) code is Java. thank you :) Pret: Wie Automobile dess. Your class should have the following variables and methods Variables String make String model int numberOfDoors Methods Automobile (String make, int model, int numberOfDoors) -
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Write a temperature-conversion application that converts from Fahrenheit to Celsius. The Fahrenheit temperature should be entered from the keyboard (via a JTextField). A JLabel should be used to display the converted temperature. Use the following formula for the conversion: Celcius = 5/9 times (Fahrenheit - 32)
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Pseudocode: Constructing Base b Expansions 1 procedure base b expansion (n, b: positive integers with b > 1) 2 3 := n 4 5 k = 0 6 7 while 9+0 8 9 ax:=qmodb 10 q:qdivb 12 13 k:=k+1 14 15 return (base b expansion of n) 11 Use the pseudocode above to write a C++ program that implements and tests the base conversion algorithm. The program should allow
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list three material that may be patented

Name types of traffic using bandwidth, but not for delivering payload from/to user.

intel 80x86 assembly language Write a procedure that will append one null-terminated string to the end of another. Specifically, the procedure must have two parameters: (1) the address of string1 and (2) the address of string2. The procedure will copy the characters of string2 to the end of string1 with the first character of string2 replacing the

1. Create a directory in the Document Folder and name it "Evaluation1". 2. Create a file on the desktop using Dos commands and name it "Evaluation1" then Move it to "Evaluation1" directory. 3. Use echo command to write "Hello every one this is my first evaluation" 4. Display the content of "Evaluation1" on the command prompt. 5. Change the command
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Halftoning is a technique that uses patterns of black and white dots to simulate a grayscale image. It is useful when an output device can only print or display black or white. The figure below shows 3x3 patterns of black and white dots that you will use to represent blocks of 3x3 pixels in grayscale images. That is, the input will be a grayscale
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Can someone help m e with m y Task 2 i n m y computer science class?
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Write a machine - language program to input a number, divide it by 4 , and output the result on the output device.

why is this process of neurons in your head not like your laptop or any other electronic computer?

PLEASE Help code in Java! CS475 Computation Theory Topic 5 Assignment This assignment focuses on conjunctive normal form formulas (cnf-formula) and satisfiability. In this assignment, you must create a Netbeans Java program that: - prompts the user for the location of a file to load a cnf-formula (use JFileChooser) - reads a cnf-formula from the
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URGENT SOLUTION REQUIRED. COURSE: Information security aur topic cryptography 5. Random Self Reducibility of QRm (10 points) We complete the proof of the random self reducibility of QRm from the tutorial. Recall that p and q are primes with p=3mod4 and q=3mod4, and m=pq. Let B be an adversary that for every zQRmQNRm+returns the correct answer to
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hello, I have a java project that involves reading postfix equations with decimals and putting them into a stack... the program needs to put numbers in a stack and then once a operator is introduced i.e.( +, -,*,/ ) it needs to pop off the first 2 numbers and do the equation i.e. ( 2 + 2 = 4 ) and put the result on top of the stack... it needs to

Code in C. DO TEETOO (NOT SEESOO) I am only given one hour to code this. [NOTE : NO arrays, pointers, recursion and strings should be used in this code.] 1) How do I go about doing this is under an hour? Please include some thought processes. Task 2: 'Seesoo' and Teetoo' Values (70 marks Task Statement Given a positive integer n, which can be a
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Comment this Assembly code please. As many lines as possible: factorial(int): stp x29, x30, [sp, -48]! add x29, sp, 0 str x19, [sp, 16] str w0, [x29, 44] ldr w0, [x29, 44] cmp w0, wzr beq .L2 ldr w0, [x29, 44] cmp w0, 1 bne .L3 .L2: mov x0, 1 b .L4 .L3: ldrsw x19, [x29, 44] ldr w0, [x29, 44] sub w0, w0, #1 bl factorial(int) mul x0, x19, x0 .L4:

Which of these statements is true of a system that is thrashing? The processes in the system can not keep their working sets in memory due to contention. Starting additional processes can help resolve the thrashing situation. The CPU is mostly idle. The disk is mostly idle. Thrashing can be avoided by monitoring the page fault rate.

Using Java GUI to implement a programming calculator as below CALCULATOR HAS TO BE CLOSE OR EXACTLY AS DESCRIBED IN THE IMAGE BELOW. FOR HELP BUTTON YOU CAN GET IMAGE OF HELP OPTION ON WINDOW CALCULATOR. DONT NEED TO CREAT "HELP" PROGRAM. Disable Dword, Word, Byte, but keep the buttons there. Also, no interaction of the mouse on the binary bits
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Part B: The second task is to write that output to a file. The steps are 1. Open a file for writing, e.g. outfile = open(output.txt,w) 2. Whenever you print, include the argument file = outfile For example, if you previously had print(x) you will now have print(x, file = outfile) 3. Close the file, e.g. outfile.close() a Amazon.com: Kuzy BLACI x
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Windows Server is an example of a ( n ) blank operating system. stand - alone network real - time embedded
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Given the array: 06 3 2 10 7 9 8. Show what the array will look like using Bubble Sort to sort it for the first three iterations. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BI V S Paragraph Arial V 14px > > X X & G T Te +] A EX :) + P QUESTION 5
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Mark the following statements as true or false a In C++, pointer is a reserved word. bIn C++,pointer variables are declared using the word p c The statement delete p: deallocates the variable pointe d. The statement delete pi deallocates the dynamic v 1. pointed to by p e. Given the declaration: int list[10] int *p: the statement plisti is valid
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The term "big datarefers to the collection of large data sets from computer tracking of activities such as sales web traffic, and social network postings true Ofalse

..ooo Life Wireless 7:54 PM irantuto.com 242 of 627 Choie CURVA NEXT, VALUE NEXT ..ooo Life Wireless 7:54 PM irantuto.com 242 of 627 Choie CURVA NEXT, VALUE NEXT
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Task 3 Design the class "Contacts" so that the code produces the expected output. You are not allowed to change the given driver code below. # Driver code names = [ " Emergency " , "Father", "Bestie" ] numbers = [ " 9 9 9 " , " 0 1 xx 2 3 " , " 0 1 xx 8 7 " , " 0 1 xx 6 5 " , " 0 1 xx 4 3 " ] m 1 = Contacts ( names , numbers ) print ( " Saved
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Please provide the full code in Java for Part 1 and 2 please!! Thank you! Using the BagInterface from the in-class examples as the starting point, implement an alternate version of the Bag class that uses a linked list structure instead of an array. The new class should be named LinkedBag. Note that this new bag class should not simply contain a
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Develop a python program to flip a coin a given amount of times and then print the number of heads and the number of tails. The equation to toss the coin is: Coin=Integer(Random*2)+1 When Coin=1 the toss is heads, and when the Coin=2 the toss is tails. Random returns a number between 0 and 1, including 0 but not 1. Therefore, when Random is less

Based on the Use Case attached below please create the following: (I) Context Level DFD Diagram (II) 0-Level DFD Diagram for the SSL Case New System. (Other Lower-Level diagrams are NOT needed) The Data Flow Diagram should include: - All relevent External Entities, Processes, Data Flows and Data Stores Normal Course: Information for Steps: 1. The
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I need to write a program that accomplishes the above tasks in C++ To create a C++ Console application that utilizes functions to create the 'Menu Driven Conversion Calculator' application. Create a menu-driven application that supports the following menu options - A. Miles to Kilometers, B. Kilometers to Miles, Q. Quit. The program should
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please help to make it about "taxi or ride sharing system" (a) Write a complete use case for one of the main features of your chosen system. Include at least one extension. Your portrayal of the system should be reasonably plausible. If in doubt, state your assumptions. [13 marks] (b) Write a relevant and plausible performance requirement and
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control flow allows jump forward and backward in assembly code Select one: TrueFalse

PYTHON Create a list containing the odd elements between 0 and 20. Search for element 15, 25, if element exist, return the value of the element and its index position in the list. If element does not exist, ensure no ValueError occurs and output cannot find the element message and element value

A transaction is anything that does not change a firm' $ database False True
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What is a common drawback of 3NN classifiers? A:The classifier is too simple to classify well. B:Training on large data sets is slow. C: Prediction on large data sets is slow. The label output by a given classifier for a data point x depends only on the location of x in feature space. True False

Why will my code return an error when the input is more than one word? #include #include #include #include int main(){ char input[200]; int width; char align[50]; char autoC[50]; printf("Input: "); scanf("%s", input); printf("Column width: "); scanf("%d", &width); printf("Alignment: "); scanf("%s", align); printf("Autocorrect: "); scanf("%s",

Having a problem linking PHP WEBPAGES, i get error : Fatal error : Call to undefined function mysql_real_escape_string() in C:\xampp\htdocs\AddUser.php on line 20 Register.php ---------------------------------------------------------------------------- Fred's Market Biz Login Freds Market Biz Registration Username Password

Python: Chaining Start with map.py code below change the code to use chaining instead of the rehash function show. class HashTable: def __init__(self): self.size = 11 self.slots = [None] * self.size self.data = [None] * self.size def put(self,key,data): hashvalue = self.hashfunction(key,len(self.slots)) if self.slots[hashvalue] == None:

Does big data present risks to organizations and users? Explain. Does big data present risks to organizations and users? Explain.

Q1: Where we can combined the well- known signals as modulated signal which represents the video signal. while the other signal such as carrier signal which regards as driving signal. what is the name of this procedure and then write the mathematical model of the output signal with its spectrum
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For this assignment, you will use the university database discussed in the book. If you have not already done so, you can download the scripts to create the database and populate it by data by following the links: Book website, Laboratory Material, Sample Tables. Then, click on the link DDL to download the code for creating the tables and on the

Positive and negative numbers / values will impact the _ _ _ _ _ _ _ _ _ _ Value ( FV ) calculation.

A project management database contains information about projects ( identified by project - id , and they have title, description, start date, end date, and budget ) , and employees ( identified by SSN , each employee has name, surname, specialty, and phone number ) . A project has any number of project packets but each packet ( identified by

Which of the following is true with regards to the 4 basics of financial modeling that were introduced in this class? Make your model dynamic. This way, assumptions can be changed easily and none of the calculations have to be edited. Input variables in the assumption section should be formatted with a color that is different from the outputs. A
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please give answers to this questions related to linux Question 3 (0.5 points) If you just installed a new CDROM drive in your Linux machine, what is the device most likely to be detected as? (This is the device you would use to mount it in linux, not the mount point) A/ Hide hint for Question 3 New devices of the same class are typically of
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What is the objective of the maximum margin approach? To ensure small training error when the underlying distribution is not known? To ensure small prediction error when the underlying distribution is not known? To optimize prediction speed? When is a classifier considered optimal? If all training points are classified correctly. If as many

Language is Java (20 points) Consider the language given as defined in chapter 7 which describes a recognition algorithm for the language L= {w$w': w is a possibly empty string of characters other than $, w=reverse(w) } a) Write a recognition algorithm for this language that uses both a queue and a stack. Therefore, as you traverse the input
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C# ONLY Math Mad Libs: In traditional Mad Libs, youre given a paragraph of text with blanks; you then fill in those blanks to create an amusing or silly story. In this program, we will do the same thing but with numbers! You will print out the following equation as a string literal: x + (y / z) * w = ? You will then prompt the user to enter one

Driving is expensive. Write a program with a car's gas milage ( miles / gallon ) and the cost of gas ( dollars / gallon ) as floating - point input, and output the gas cost for 2 0 miles, 7 5 miles, and 5 0 0 miles. Output each floating - point value with two digits after the decimal point, which can be achieved as follows:

Student (snum: integer, sname: string, major: string, level: string, age: integer) Class(cname: string, meets_at: time, room: string, fid: integer) Enrolled(snum: integer, cname: string) Faculty(fid: integer, fname: string, deptid: integer) The meaning of these relations is straightforward: for example, Enrolled has one record per student-class
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A DBA executed the LOAD utility using the ENFORCE NO option to load a child table. There were at least two hundred constraint violations in the input data being loaded. Next, the DBA executes the CHECK DATA utility with the following control statement:

For which of the following parameter passing techniques can the argument be a constant or an expression? Question 1 6 options: Call by reference Call by result Call by value - result Call by value

Identify errors and correct them of the following program: (10 marks) 1. public class AccountInfo 2. { 3. private double balance; 4. public AccountInfo() 5. 6. balance = 0; 7. } 8. public AccountInfo(double startBalance) 9. { 10. balance = startBalance; 11. } 12. public AccountInfo(String str) 13. { 14. balance = Double.parseDouble(str); 15. } 16.

Which tool should an application developer use to help identify input validation vulnerabilities? A sniffer A fuzzer A filter A scanner

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