Questions
Why can the empirical evidence for book-to-market and size effects be treated as a violation to...

Why can the empirical evidence for book-to-market and size effects be treated as a violation to the CAPM?

In: Finance

Discussion Database Security and UML Often, systems have only one level of security when it comes...

Discussion Database Security and UML

Often, systems have only one level of security when it comes to databases. Imagine that someone is trying to add a name (which should be composed only of letters) to a database. The user mistakenly hits a number, and the system rejects the entry. Such security can be implemented at the database management system (DBMS) or the application level.

Where would you apply security? Justify your choice.

What are some alternative practices or standards of utilizing UML for the visual representation of systems?

When would you use UML over other standards?

When are other standards preferable?

In: Computer Science

You have decided to build the database for John’s system. This question centres around the development...

You have decided to build the database for John’s system. This question centres around the
development of John’s database.
Q.3.1 Draw any three tables you will include in John’s database. For each table,
provide the following:
a. Three fields.
b. One record in each table.
c. One primary key for each table.
d. One foreign key.
(20)
Q.3.2 Design a logical view for the tables you have specified in Q.3.1.
Note: You may use any software tool to create your view.

Business Information System

In: Computer Science

Using Ubuntu, what are the commands for the following: Assume that your company just hired 3...

Using Ubuntu, what are the commands for the following:

Assume that your company just hired 3 new software developers. You are responsible for setting up a LDAP server and adding those three new employees into the LDAP database. Please complete the follow tasks:

  1. Installing and configuring a OpenLDAP server on your Ubuntu server
  2. Set the domain component (dc) = nodomain
  3. Insert an organization unit node into the LDAP database:

dn:ou=People,dc=nodomain

objectClass:organizationalUnit

ou:People

  1. Insert a group node into the LDAP database:

dn:cn=SoftwareDeveloper,ou=People,dc=nodomain

objectClass:posixGroup

cn:SoftwareDeveloper

gidNumber:7000

In: Computer Science

1: Use the customers table inside of the salesordersexample database, and write a query statement to...

1: Use the customers table inside of the salesordersexample database, and write a query statement to show records from the CustFirstName, CustLastName, and CustCity columns.

2:  Use the employees table inside of the salesordersexample database, and write a query statement to show the employee’s EmployeeID, EmpFirstName, EmpLastName, and EmpPhoneNumber, if the employee is living in the 98413 zip code.

3. Use INNER JOIN to create a query result. In this query result, list each vendor’s name and the name of each product the vendor has supplied to our company. You should use the Vendors, Product_Vendors, and the Products tables in the database to complete this task.  

In: Operations Management

If you add 39 mL of distilled water to 48 mL of a 15 % (m/v)...

If you add 39 mL of distilled water to 48 mL of a 15 % (m/v) NaOH solution, what is the new concentration in % (m/v)?

A 21.8 g sample of water contains how many water molecules?

An unknown hydrocarbon compound was analyzed for hydrogen by elemental analysis and results show that it contains 15.88 % H. What is the empirical formula?

Determine the empirical formula of the compound with the following composition by mass: 92.26 percent C and 7.74 percent H.

In: Chemistry

2. Perform the calculations and record the following data in the table below. What is the...

2. Perform the calculations and record the following data in the table below. What is the empirical formula of the copper sulfate hydrate? The molar mass of water is 18.015 g/mol and the molar mass of anhydrous copper sulfate is 159.609 g/mol. Show your calculations.

mass of water in the hydrate sample (g)=

number of moles of water=

mass of anhydrous salt (g) =

number of moles of anhydrous salt=

molar ratio of anhydrous salt to water=

empirical formula of the hydrate=

In: Chemistry

QUESTION 6 Complete combustion of 4.5892 a particular compound that contains only carbon, hydrogen and oxygen...

QUESTION 6 Complete combustion of 4.5892 a particular compound that contains only carbon, hydrogen and oxygen produces 10.4324 g of CO2 and 4.2705 g of H2O. The empirical formula of the compound is given by

C__________________ H______________________ O_____________ (indicate "1" if there is only one atom of a given type in the empirical formula.)

The molar mass of the compound is found to be 116.16 g/mol in a different experiment. What is the molecular formula of the compound?

C______________ H________________ O_____________________

Need help and answers please!

In: Chemistry

A 0.100 g sample of an organic compound of an organic acid contains C, H, and...

A 0.100 g sample of an organic compound of an organic acid contains C, H, and O was combusted to determine the empirical formula. The combustion produced 0.2921 grams of CO2 and 0.0951 grams of H2O. Determine the number of moles of carbon in the compound, the number of moles of hydrogen in the compound, the number of grams of carbon, the number of grams of hydrogen, the number of grams oxygen as well as the empirical formula. The molecular weight of the compound was found to be 660 grams per mole, determine the molecular formula.

In: Chemistry

3. Learned (a.k.a. conditioned) responses to food-relevant stimuli can have powerful effects on eating. a. Define...

3. Learned (a.k.a. conditioned) responses to food-relevant stimuli can have powerful effects on eating. a. Define flavor-nutrient learning (a.k.a. flavor-postingestive consequence or flavor-calorie learning) and describe one example of empirical evidence that demonstrates its effect on food preference or intake (i.e. the training and testing method.) b. Define learned meal initiation and describe one example of empirical evidence that demonstrates its effect on eating behavior.

In: Psychology