ETC 1251C Week 10 Guided Questions Wk of Mar 11 2024
docx
keyboard_arrow_up
School
University of Central Florida *
*We aren’t endorsed by this school
Course
1251C
Subject
Mechanical Engineering
Date
Apr 3, 2024
Type
docx
Pages
5
Uploaded by CountKudu4187
ETC 1251C (CRN 25557+25555)
for Week of March 11, 2024
Week 10 Reading Guide
Instructions
The purpose of these guided questions is to reinforce the reading content
Below is a list of questions for you to review and respond.
Please download this Word file, save this file with your name, course CRN, and the reading guide Week (for example, Forbes27773Wk1.doc)
As you respond to the questions, confirm the questions are in BLACK
, and your response/answer in GREEN
.
My review comments, if shared, will be in RED
.
Keep in mind that all writing must be submitted in a professional manner and, unless specifically asked, write in your own words (do not copy/paste excerpts from the text).
Take care to write in complete sentences and use proper grammar, and spell check.
Some assignment deliverable comments:
o
Your guided question responses will be graded
o
Your guided question responses are to be turned in via Canvas as an upload of your file in an editable *.doc format.
o
No handwritten homework will be accepted.
o
Please include your name and CRN at the top of the page in the spaces provided
Page 1
of 5
ETC 1251C (CRN 25557+25555)
for Week of March 11, 2024
Chapter 9 - Finishes
STUDENT - _________________
ETC1251C, CRN - ____________
NOTE – For this module (and other modules that cover more than one chapter), I will be
sharing reading sections that are “optional”. Those “optional” sections will NOT be included in my reading guide grading assessments as well as the End-Term Exam.
1)
In context to sustainability, what is a downside to the use of gypsum, resilient flooring, and carpets (when those scopes are being demolished)? (Pg 640-641)
OPTIONAL – Section 9.1.1 support systems
2)
When applying gypsum or cement plaster, a bond is needed. That bond is described by two methods…what are they? (Pg 645)
3)
What is the most common commercially available types of metal reinforcement? And what type of bond method is that? (Pg 647)
4)
For plaster application, what two means are typically used to address the plaster edges? (Pg 649)
5)
For plaster applications, backing paper is sometimes used. Why is backing paper used? (Pg 650)
6)
Between gypsum and portland cement plaster, one plaster is also described as stucco. Which plaster is that? And what is the key element that supports the use/success of stucco? (Sections 9.2.2 and 9.2.3)
7)
In reference to the bagged product, gypsum plaster is divided into two (2) groups or types. What are those types? (Pg 653-654)
8)
Application of gypsum plaster is typically provided in a method referred to as coats. What are the two method coats described in the text? (Pg 658)
9)
Also, application of Portland cement plaster is typically provided in a method referred to as coats. What are the two method coats described in the text? And what is ‘driver’ that can influence the use of one method over the other? (Pg 663)
Page 2
of 5
ETC 1251C (CRN 25557+25555)
for Week of March 11, 2024
10) For Portland cement plaster (three coat method), what is the typical total thickness of that plaster system? And what are the respective thicknesses by coat (Pg 663-664)
11) Is the two coat method Portland cement plaster total thickness the same as the three coat method? (Pg 664)
12) Cracks in plaster is caused by what? (Pg 665)
13) When applying Portland cement plaster (with no reinforcements) onto masonry, control joints should be aligned to what? (Pg 666)
14) What are some typical Portland cement plaster finishes? (Pg 667)
15) Most gypsum wallboards are produced with what edge type and why? (Pg 669)
16) Water resistant wallboards are not recommended for what areas/uses? (Pg 670)
17) What are the common fasteners for gypsum board installations? (Pg 671-672)
OPTIONAL - Section 9.5.5 – Board Application
18) How many levels of finishes does the Gypsum Association recommend? (Pg 689)
19) What is the likely gypsum board finish level needed to support a video projection? (Figure 9.5-47)
20) What are the listed finish defects which can be caused by improper installation or adverse job conditions? (Pg 692-693)
21) What are the various ceramic tile products? (Pg 694)
22) When ‘grouping’ ceramic tiles to degrees of moisture perviousness, what are those ‘groups’? (Pg 695)
23) Expand on ANSI Standard 137.1, specific to ceramic tile grades. (Pg 695-696)
24) As part of tile installation, what is a key factor to address with the supporting construction? (Pg 703-704)
25) Joints in tile installation should provided in what conditions? (Pg 706)
Page 3
of 5
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
ETC 1251C (CRN 25557+25555)
for Week of March 11, 2024
26) As part of tile installation on walls, what one uniqueness (HINT, exclusion/non essential) is highlighted in the text when tile is installed using the motar bed method? (Pg 713)
27) When considering acoustical performance, what is indicated by the NRC? (Pg 718)
28) When considering acoustical performance, what is indicated by the STC or CSTC? (Pg 718)
OPTIONAL – Sections 9.7.1.2 and 9.7.1.3
29) When rating the fire performance of acoustical materials, why can’t the acoustical material itself be the fire rating? (Pg 723)
OPTIONAL – Section 9.7.1.5
30) When integrating an acoustical system, what are some of the key components that need to be addressed in the integration process? (Pg 725-726)
OPTOINAL – Section 9.7.3 31) What is the difference between brick flooring and brick paving? (Pg 730)
32) Most stone flooring and paving uses what natural materials? (Pg 732) 33) In wood flooring, of the referenced 12 types of woods used for flooring, what percentage represents the hardwoods? (Pg 737)
34) What are the three (3) basic wood flooring types? (Pg 739)
35) What are some attributes of resilient flooring? (Pg 746)
36) Resilient flooring is typically produced in what forms? (Pg 748)
37) What are some of the various resilient floor product types? (Pg 748)
38) What is the slip resistance requirements for flooring materials? And who/what issued those requirements? (Pg 751)
39) What are the most common resilent flooring accessories? (Pg 751)
Page 4
of 5
ETC 1251C (CRN 25557+25555)
for Week of March 11, 2024
40) What is commonly used to install resilient flooring (the broad description, not the individual types)? (Pg 754)
OPTIONAL – Section 9.11.5 - 9.11.10 41) What are the two terrazzo binder types and how do they differ in terms of application locations? (Pg 767)
42) What is the product that makes terrazzo floors unique in appearance (the mixture of small colors)? (Pg 768)
OPTIONAL – Section 9.12.2
43) What are the two grouping names and associated thicknesses for fluid applied floorings? (Pg 779)
44) How is carpet classified? And what are those classifications? (Pg 783)
45) What is the difference between rugs and carpets? (Figure 9.14-1)
OPTIONAL – Pages 790 - 794
46) From the text, what is the difference between paints and coatings? (Pg 796)
47) Paint is a mixture of what two (2) main materials? (Pg 797)
48) What is the difference between a primer and a top coat?
49) From the special coatings manufacturer data, what are the three (3) top characteristics you believe are most important? (Pg 814-815)
Page 5
of 5
Related Documents
Related Questions
Can anyone help me with these questions please
arrow_forward
Chrome
File
Edit
View
History
Bookmarks
People
Tab
Window
Help
McGraw-Hill Campus - ALEKS Science - CHM1045 GEN CHEM 1 BLENDED 669113
A bconline.broward.edu/d21/le/content/466883/fullscreen/12868783/View
McGraw-Hill Campus - ALEKS Science
O GASES
Interconverting pressure and force
A chemistry graduate student is designing a pressure vessel for an experiment. The vessel will contain gases at pressures up to 470.0 MPa. The student's
design calls for an observation port on the side of the vessel (see diagram below). The bolts that hold the cover of this port onto the vessel can safely withstand
a force of 2.80 MN.
pressure vessel
bolts
side
View
port
Calculate the maximum safe diameter w of the port. Round your answer to the nearest 0.1 cm.
O cm
Explanation
Check
O2021 McGraw-Hill Education. All Rights Reserved. Terms of Use
FEB
arrow_forward
There is a small space between the orange and purple line could you please connect the two lines together also can you please make the purple line shorter and then connect the purple line to the orange line, please take out the box that says “Diesel, petrol, Diesel best fit, petrol best fit”. Also when ever I run this code the graph shows up but there are still errors that comes up could you please fix them when you are running this on MATLAB.
Please use this code on MATLAB and fix it.
% Sample data for Diesel and Petrol cars
carPosition = linspace(1, 60, 50); % Assumed positions of cars
% Fix the random seed for reproducibility
rng(50);
% Assumed CO2 emissions for Diesel and Petrol
CO2Diesel = 25 + 5*cos(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Diesel
CO2Petrol = 20 + 5*sin(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Petrol
% Fit polynomial curves
pDiesel = polyfit(carPosition, CO2Diesel, 3);
pPetrol = polyfit(carPosition, CO2Petrol, 3);
% Generate…
arrow_forward
Hello I’m trying to make the graph that you see in the picture, I’m trying the exact copy of that graph using this code but I’m having a hard time doing that. Could you change the code so that it looks like the graph that you see on the picture using MATLAB, please send the code when you are finished.
% Sample data for Diesel and Petrol cars
carPosition = linspace(1, 60, 50); % Assumed positions of cars
% Fix the random seed for reproducibility
rng(45);
% Assumed positions of cars
CO2Diesel = 25 + 5*cos(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Diesel
CO2Petrol = 20 + 5*sin(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Petrol
% Fit polynomial curves
pDiesel = polyfit(carPosition, CO2Diesel, 3);
pPetrol = polyfit(carPosition, CO2Petrol, 3);
% Generate points for best fit lines
fitDiesel = polyval(pDiesel, carPosition);
fitPetrol = polyval(pPetrol, carPosition);
% Plotting the data
figure; hold on;
scatter(carPosition, CO2Diesel, 'o', 'MarkerEdgeColor', [1 0.5…
arrow_forward
Don't use chatgpt will upvote
arrow_forward
I need help coding in MATLAB. I have a .txt file containing the following data. That data is saved in a file named data.txt. I am wondering how I could extract all or some of that data into another .m file. Can you show me the code.
[[5.0018696581196584, 17.863820207570207, -13.086858974358975], [5.0018696581196584, 17.863820207570207, -13.086858974358975], [5.0018696581196584, 17.863820207570207, -13.086858974358975]]
arrow_forward
Identify the lines
arrow_forward
Could you please fix my code it’s supposed to look like the graph that’s on the picture. But the lines do not cross eachother at the beginning. Could you make the lines look like the lines on the graph?
Use this code in MATLAB and fix it.
% Sample data for Diesel and Petrol cars
carPosition = linspace(1, 60, 50); % Assumed positions of cars
% Define your seed here
seed = 50;
rand('seed',seed); % Set the seed for reproducibility
% Assumed CO2 emissions for Diesel and Petrol
CO2Diesel = 25 + 5*cos(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Diesel
CO2Petrol = 20 + 5*sin(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Petrol
% Fit polynomial curves with a reduced degree of 2
pDiesel = polyfit(carPosition, CO2Diesel, 2);
pPetrol = polyfit(carPosition, CO2Petrol, 2);
% Generate points for best fit lines
fitDiesel = polyval(pDiesel, carPosition);
fitPetrol = polyval(pPetrol, carPosition);
% Plotting the data
figure;
hold on;
% Plot Diesel best fit line…
arrow_forward
I need the answers to this part, I have submitted this question twice on this site and both times received way different answers...as I am unsure which tutor to listen to, I am uploading this question for the third time and I am asking a very highly knowledgable tutor to help me solve this. If you are uncertain, please leave it for another tutor.
arrow_forward
arrow_forward
Oh no! Our expert couldn't answer your question.
Don't worry! We won't leave you hanging. Plus, we're giving you back one question for the inconvenience.
Here's what the expert had to say:
Hi and thanks for your question! Unfortunately we cannot answer this particular question due to its complexity. We've credited a question back to your account. Apologies for the inconvenience.
Ask Your Question Again
5 of 10 questions left
until 8/10/20
Question
Asked Jul 13, 2020
1 views
An air conditioning unit uses Freon (R-22) to adapt an office room at temperature 25 oC in the summer, if the temperature of the evaporator is 16 oC and of the condenser is 48 oC. The reciprocating compressor is single acting, number of cylinders are 2, the volumetric efficiency is 0.9, number of revolutions are 900 r.p.m. and L\D= 1.25. If the compressor consumes a power of 3 kW and its mechanical efficiency is 0.9. Find the following:
(A) Flow rate of the refrigerant per…
arrow_forward
Hello tutors, help me. Just answer "Let Us Try"
arrow_forward
Hartley Electronics, Inc., in Nashville, producesshort runs of custom airwave scanners for the defense industry.The owner, Janet Hartley, has asked you to reduce inventory byintroducing a kanban system. After several hours of analysis, youdevelop the following data for scanner connectors used in onework cell. How many kanbans do you need for this connector?Daily demand 1,000 connectorsLead time 2 daysSafety stock 12 dayKanban size 500 connectors
arrow_forward
You are assigned as the head of the engineering team to work on selecting the right-sized blower that will go on your new line of hybrid vehicles.The fan circulates the warm air on the inside of the windshield to stop condensation of water vapor and allow for maximum visibility during wintertime (see images). You have been provided with some info. and are asked to pick from the bottom table, the right model number(s) that will satisfy the requirement. Your car is equipped with a fan blower setting that allow you to choose between speeds 0, 1,2 and 3. Variation of the convection heat transfer coefficient is dependent upon multiple factors, including the size and the blower configuration.You can only use the following parameters:
arrow_forward
Newton’s 2nd Law Lab (Modeling friendly lab)
Go to the PhET simulation Forces & Motion. https://phet.colorado.edu/sims/html/forcesandmotionbasics/latest/forcesandmotionbasics_en.html
Select “Acceleration”
Click to show Forces, Sum of Forces, Values, Mass, and Acceleration.
There are two experiments for this activity – make sure you include both.
Experiment #1: Acceleration vs. Force
In this lab you will determine the relationship between acceleration and net force.
Choose a mass at the beginning, and keep it constant for this entire experiment.
Set the friction to zero. This will make your Applied Force equal to the net force.
Record data for five different values of Applied Force.
Graph Acceleration vs. Net Force.
Graph this in Google sheets(you want a line graph - it should only have one line).
Make sure that Applied Force information is used as the x value
Make sure that Acceleration information is used as the y value
Add a trendline – see what fits best –…
arrow_forward
Please make the exact graph that you see in the picture, along with the graph are numbers that are data. Please make the exact graph do not make anything thing different, the blue and orange circles should be there and the lines should be the same including the titles. Please make sure everything is exactly the same. Use MATLAB, and send the code and please make sure no error signs comes up. Take your time please I need help.
arrow_forward
\ח
"Chicago - Lakeshore Dr from John Hancock Center" by Ryan from Toronto, CA CC BY 2.0
This image is taken from the John Hancock Center and is an aerial view near Oak Street Beach. The
general speed limit on Jean Baptiste Point DuSable Lake Shore Drive, shown in this image, is 40
mph. As you travel south on the drive, you must enter the curve south of Oak Street Beach (at Point
..AL
-far
BIKI
O Search
Hintain
11
3
SIM
arrow_forward
I drew it but I don't know where I have to connect it. Where do I put dashed lines (if needed) where are the solid lines? Did I do it right?
arrow_forward
SEE MORE QUESTIONS
Recommended textbooks for you

Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press

Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON

Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education

Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY

Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning

Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Related Questions
- Can anyone help me with these questions pleasearrow_forwardChrome File Edit View History Bookmarks People Tab Window Help McGraw-Hill Campus - ALEKS Science - CHM1045 GEN CHEM 1 BLENDED 669113 A bconline.broward.edu/d21/le/content/466883/fullscreen/12868783/View McGraw-Hill Campus - ALEKS Science O GASES Interconverting pressure and force A chemistry graduate student is designing a pressure vessel for an experiment. The vessel will contain gases at pressures up to 470.0 MPa. The student's design calls for an observation port on the side of the vessel (see diagram below). The bolts that hold the cover of this port onto the vessel can safely withstand a force of 2.80 MN. pressure vessel bolts side View port Calculate the maximum safe diameter w of the port. Round your answer to the nearest 0.1 cm. O cm Explanation Check O2021 McGraw-Hill Education. All Rights Reserved. Terms of Use FEBarrow_forwardThere is a small space between the orange and purple line could you please connect the two lines together also can you please make the purple line shorter and then connect the purple line to the orange line, please take out the box that says “Diesel, petrol, Diesel best fit, petrol best fit”. Also when ever I run this code the graph shows up but there are still errors that comes up could you please fix them when you are running this on MATLAB. Please use this code on MATLAB and fix it. % Sample data for Diesel and Petrol cars carPosition = linspace(1, 60, 50); % Assumed positions of cars % Fix the random seed for reproducibility rng(50); % Assumed CO2 emissions for Diesel and Petrol CO2Diesel = 25 + 5*cos(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Diesel CO2Petrol = 20 + 5*sin(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Petrol % Fit polynomial curves pDiesel = polyfit(carPosition, CO2Diesel, 3); pPetrol = polyfit(carPosition, CO2Petrol, 3); % Generate…arrow_forward
- Hello I’m trying to make the graph that you see in the picture, I’m trying the exact copy of that graph using this code but I’m having a hard time doing that. Could you change the code so that it looks like the graph that you see on the picture using MATLAB, please send the code when you are finished. % Sample data for Diesel and Petrol cars carPosition = linspace(1, 60, 50); % Assumed positions of cars % Fix the random seed for reproducibility rng(45); % Assumed positions of cars CO2Diesel = 25 + 5*cos(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Diesel CO2Petrol = 20 + 5*sin(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Petrol % Fit polynomial curves pDiesel = polyfit(carPosition, CO2Diesel, 3); pPetrol = polyfit(carPosition, CO2Petrol, 3); % Generate points for best fit lines fitDiesel = polyval(pDiesel, carPosition); fitPetrol = polyval(pPetrol, carPosition); % Plotting the data figure; hold on; scatter(carPosition, CO2Diesel, 'o', 'MarkerEdgeColor', [1 0.5…arrow_forwardDon't use chatgpt will upvotearrow_forwardI need help coding in MATLAB. I have a .txt file containing the following data. That data is saved in a file named data.txt. I am wondering how I could extract all or some of that data into another .m file. Can you show me the code. [[5.0018696581196584, 17.863820207570207, -13.086858974358975], [5.0018696581196584, 17.863820207570207, -13.086858974358975], [5.0018696581196584, 17.863820207570207, -13.086858974358975]]arrow_forward
- Identify the linesarrow_forwardCould you please fix my code it’s supposed to look like the graph that’s on the picture. But the lines do not cross eachother at the beginning. Could you make the lines look like the lines on the graph? Use this code in MATLAB and fix it. % Sample data for Diesel and Petrol cars carPosition = linspace(1, 60, 50); % Assumed positions of cars % Define your seed here seed = 50; rand('seed',seed); % Set the seed for reproducibility % Assumed CO2 emissions for Diesel and Petrol CO2Diesel = 25 + 5*cos(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Diesel CO2Petrol = 20 + 5*sin(carPosition/60*2*pi) + randn(1, 50)*5; % Random data for Petrol % Fit polynomial curves with a reduced degree of 2 pDiesel = polyfit(carPosition, CO2Diesel, 2); pPetrol = polyfit(carPosition, CO2Petrol, 2); % Generate points for best fit lines fitDiesel = polyval(pDiesel, carPosition); fitPetrol = polyval(pPetrol, carPosition); % Plotting the data figure; hold on; % Plot Diesel best fit line…arrow_forwardI need the answers to this part, I have submitted this question twice on this site and both times received way different answers...as I am unsure which tutor to listen to, I am uploading this question for the third time and I am asking a very highly knowledgable tutor to help me solve this. If you are uncertain, please leave it for another tutor.arrow_forward
- arrow_forward Oh no! Our expert couldn't answer your question. Don't worry! We won't leave you hanging. Plus, we're giving you back one question for the inconvenience. Here's what the expert had to say: Hi and thanks for your question! Unfortunately we cannot answer this particular question due to its complexity. We've credited a question back to your account. Apologies for the inconvenience. Ask Your Question Again 5 of 10 questions left until 8/10/20 Question Asked Jul 13, 2020 1 views An air conditioning unit uses Freon (R-22) to adapt an office room at temperature 25 oC in the summer, if the temperature of the evaporator is 16 oC and of the condenser is 48 oC. The reciprocating compressor is single acting, number of cylinders are 2, the volumetric efficiency is 0.9, number of revolutions are 900 r.p.m. and L\D= 1.25. If the compressor consumes a power of 3 kW and its mechanical efficiency is 0.9. Find the following: (A) Flow rate of the refrigerant per…arrow_forwardHello tutors, help me. Just answer "Let Us Try"arrow_forwardHartley Electronics, Inc., in Nashville, producesshort runs of custom airwave scanners for the defense industry.The owner, Janet Hartley, has asked you to reduce inventory byintroducing a kanban system. After several hours of analysis, youdevelop the following data for scanner connectors used in onework cell. How many kanbans do you need for this connector?Daily demand 1,000 connectorsLead time 2 daysSafety stock 12 dayKanban size 500 connectorsarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY

Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press

Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON

Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education

Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY

Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning

Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY