For this assignment please develop a 2-3 pages word document by designing a set of rules for a thread scheduling system and use a scheme to simulate a sequence of threads with a mix of workloads. Additionally, design a memory allocation scheme for an embedded system with a fixed amount of application memory and separate working storage memory. Finally, develop a CPU allocation scheme for a three-core processor system that will run standard workloads that might be found in a standard computer system.
Answers
The evidence suggests that Thread scheduling systems assign threads to CPUs in a way that balances performance, fairness, and simplicity.
A thread scheduling system is a set of rules that govern how threads are assigned to CPUs. The rules typically include:
Thread priority: Threads are assigned a priority level, with higher priority threads being given more CPU time.Thread preemption: A higher-priority thread can preempt a lower-priority thread that is currently running.Thread time slots: Threads are allocated a time slot, which determines how long a thread can run before being preempted.Thread starvation: A thread that is frequently preempted may never get a chance to run.The thread scheduling system must be designed to balance the following factors:
Performance: The system should ensure that all threads are able to run as quickly as possible.Fairness: The system should ensure that all threads are given a fair chance to run.Simplicity: The system should be easy to implement and maintain.The specific rules used in a thread scheduling system will vary depending on the application. However, the general principles described above are common to all thread scheduling systems.
In addition to the above rules, there are a number of other factors that can affect the performance of a thread scheduling system. These factors include:
The number of CPUs: A system with more CPUs can obviously handle more threads simultaneously.The size of the threads: Larger threads will take up more CPU time, which can lead to starvation of smaller threads.The number of active threads: A system with a large number of active threads will put more stress on the thread scheduling system.The thread scheduling system is an important part of any multithreaded application. By understanding the rules and factors that affect thread scheduling, you can design applications that are both efficient and fair.
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Related Questions
how is an nmos and gate implemented? group of answer choices a single nmos transistor. 2 nmos transistors in series. 2 nmos transistors in parallel. the output of 2 nmos transistors in series connected to the input of a single nmos transistor. the output of 2 nmos transistors in parallel connected to the input of a single nmos transistor. the output of a single nmos transistor connected to the input of 2 nmos transistors in series. the output of a single nmos transistor connected to the input of 2 nmos transistors in parallel.
Answers
An nmos and gate can be implemented using 2 nmos transistors in series, or the output of 2 nmos transistors in parallel connected to the input of a single nmos transistor.
Implementing an nmos AND gate using two transistors in series or in parallelIn the first implementation, the two nmos transistors are connected in series, with the input signal connected to the gate of the first transistor and the output taken from the drain of the second transistor. When the input signal is high, the first transistor is turned on, allowing current to flow to the second transistor. If the second transistor is also turned on, the output will be low, otherwise, the output will be high.
In the second implementation, the two nmos transistors are connected in parallel, with their sources and gates connected together, and the output taken from the drains. When the input signal is high, both transistors are turned on, allowing current to flow to the output. If either of the transistors is turned off, the output will be low.
Both of these implementations use two nmos transistors, but they are connected differently to achieve the desired logic function. A single nmos transistor can be used to implement a NOT gate or an inverter, but it cannot implement an AND gate
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Application: Assume a small
spacecraft is in open space.
One panel is a dedicated
radiator (dimensions in
image) and is painted with
S13 GLO white paint
(emissivity = .89). If the
radiator is at 30C and has a
full view factor to space, how
much heat can it reject from
the system? (How much is
this radiator radiating to
space?). Use 3K for space
temperature. Round answer
up to one decimal place. No
need to include units.
*.../2
1 m
Radiator
.3 m
Answers
The amount of radiation that the system is radiating into space is 1.164 x 10¹⁷. See the explanation below.
What is radiation?Rockets or space crafts emit heat as they navigate into space. This heat or emissions is what is referred to as radiation.
What is the calculation supporting the answer above?Recall that we are given the following:
Thus,
Converting the temperature of the Radiator, we have:
30°C = 273 + 30
= 303K
Area of the Panel of the radiator = 0.3 x 0.1
= 0.03
The formula for the heat emitted by the system is given as:
Q = ∈δA (T₁⁴ - T₁⁴)
Where:
δ = Stefan - Bolta Mann constant
→ δ = 5.67 X 10⁻ⁿ
→ The amount of heat is thus given as:
Q = 0.89 x 5.17 x 10⁸ [ (303)⁴ - (3)⁴] x 0.03
Therefore,
Q = 1.1635158780036 × 10¹⁷
Q ≈ 1.164 x 10¹⁷
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As a result of the 1934 requirement that public companies’ annual financial statements be "certified…by independent public accountants," the American Institute of Certified Public Accountants (AICPA) was permitted to establish standards governing these independent audits. Over the next few decades, the AICPA changed the organization that issues pronouncements on auditing.In 1978, the AICPA established the Auditing Standards Board (ASB) as the authoritative body responsible for issuing auditing standards. In the ASB’s Operating Policies document, the Appendix contains a history of auditing standard setting by the AICPA, including the creation of the ASB.In the Appendix to the ASB’s Operating Policies, read the section describing the creation of the Auditing Standards Board. According to this document, what are the four principal objectives of auditing standards and procedures issued by the ASB?
Answers
Answer:
d
Explanation:
d
What term describes a catalytic converter as it reaches its effective temperature?
Answers
A comparison of parking fee changed at 4 randomly selected parking areas were 12 15 17 and 20 pesos per car find the mean the variance of the parking fees
Answers
The calculated mean value is 16. The sum of all values divided by the total number of values determines the mean (also known as the arithmetic mean, which differs from the geometric mean) of a dataset.
The term "average" is frequently used to describe this measure of central tendency. By dividing the sum of the given numbers by the entire number of numbers, the mean—the average of the given numbers—is determined. Mean is equal to (Sum of All Observations/Total Observations).
Mean=12+15+17+20/4
=16
Special road signage designate 10-cent zones. At the beginning and finish of the zone, there are signs. There is one space available for as long as three or four hours each day. Only specific hours of the day are subject to the 10 cent rate. There may be a Blue Zone in locations where paid parking is not (yet) in effect.
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A gear train has two gears. The driver gear has 8 teeth and a diametral pitch of 6 teeth/inch. the follower gear has 24 teeth. What is the diametral pitch of the follower gear?
Answers
Answer:
18 teeth/inch
Explanation:
Given that: i. driver gear has 8 teeth and diametral pitch of 6 teeth/inch.
ii. follower gear has 24 teeth.
Let the followers diametral pitch be represented by x.
Then,
8 teeth ⇒ 6 teeth/inch
24 teeth ⇒ x teeth/inch
So that;
x = \(\frac{24 x 6}{8}\)
= \(\frac{144}{8}\)
= 18 teeth/inch
The diametral is 18 teeth/inch
A rain gutter is to be constructed from a metal sheet of width 3m by bending up one-third of the sheet on each side through an angle θ. How should θ be chosen so that the gutter will carry the maximum amount of water?.
Answers
The area of the gutter is therefore equal to the area of the rectangle plus the area of the triangles.
A = rectangle + 2 * triangle
= 10h + 2 * (1/2 hw)
Using trig work out h and w.
h = 10 sin ?
w = 10 cos ?
A = 10h + hw
= 100sin? + 100sin?cos?
Differentiate the expression (either use the product rule for sin? cos?, or write 100sin?cos? as 50sin2? using the double angle formula)
A = 100sin? + 50sin2?
dA/dt = 100cos? + 100cos2?
For A to be a max or min the derivative must equal zero
100cos? + 100cos2? = 0
cos? + cos2? = 0
Use the double angle formula to write cos2? as 2cos^2 ? - 1
cos? + 2cos^2 ? - 1 = 0
2cos^2 ? + cos? - 1 = 0
This quadratic factorizes:
(2cos? - 1)(cos? + 1) = 0
This means that
cos ? = 1/2 or cos ? = 1
giving:
? = pi/3 or ? = pi
Which means that to achieve the maximum area ? should be pi/3 = 60 degrees
You can check that this is the max by substituting in these values of theta and the two end points (theta = 0, theta = pi), and seeing that pi/3 gives the maximum.
The maximum area is therefore
A = 100sin? + 100sin?cos?
= 100sin(pi/3) + 100sin(pi/3)cos(pi/3)
= 100 sqrt(3) / 2 + 100 sqrt(3)/2 * 1/2
= 100 * 3/2 * sqrt(3) / 2
= 3 * 25 * sqrt(3)
= 75 sqrt(3)
= 129.9...
= 130 cm^3
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ký hiệu của vật liệu cơ khí
Answers
Answer:
by hìuuf5ëcz
Explanation:
6tgiïuggd
If you measure the flow conditions (velocity, pressure, temperature) at a single point and conditions do not change over time, the flow is characterized as
Answers
Answer:
Steady flow
Explanation:
Flows in fluids can be categorized into different classes depending on the type of flow and the variations in their characteristics such as velocity, pressure, density, temperature, e.t.c
When these characteristics do not change when measured over time at a single point, then the flow is said to be steady. For a steady flow, the mathematical expression, amidst other conditions, is given as follows;
\(\frac{dV}{dt} = 0, \frac{dP}{dt} = 0, \frac{dT}{dt} = 0\)
Where;
V, P and T are the velocity, pressure and temperature of the fluid.
PS:
Other types of flows include:
i. Unsteady flow
ii. Laminar flow
iii. Turbulent flow
iv. Uniform flow
v Non-uniform flow
vi. Rotational flow
vii. Irrotational flow
15. Concerning blood, which virus poses the greatest risk for workers?
A) O HIV
B) O Hepatitis C
C) O Hepatitis A
D) O Hepatitis B
Answers
Answer:
I think the answer is A. HIV
what should you use to clean hand and power tools?
A) Magic eraser
B) Abrasive pad
C) Soft cloth
D)Oil brush
Answers
Soft cloth is the appropriate choice to clean hand and power tools. (Option C)
Why is this the case?Abrasive materials like magic erasers or abrasive pads can damage the tool's surfaces, affecting their functionality and longevity.
A soft cloth effectively removes dirt, dust, and debris without causing any harm. Regular cleaning not only maintains the tools' appearance but also ensures their proper operation.
Also, using a soft cloth minimizes the risk of scratches or other unintended damage, prolonging the life of your valuable tools.
Thus option C) is the right answer.
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1. What most commonly joins the structural panels of
a unibody?
(A) Spot welds
(B) Adhesives
(C) Bolts
(DJ Nuts
Answers
Answer:
a
Explanation:
becasue it is
What type of disinfectant would be used on semicritical items, such as a flexible fiberoptic sigmoidoscope?
Answers
2% glutaraldehyde is a disinfectant that is often used. preferred agent for semi-critical objects that can't be exposed to such adaptable fiberoptic sigmoidoscopy.
The small incision medical procedure known as a sigmoidoscopy examines the large intestine from the rectum to the sigmoid colon, which is the closest portion of the colon. There are two different forms of sigmoidoscopy: rigid sigmoidoscopy employs a rigid equipment while flexible sigmoidoscopy uses a flexible endoscope. The chosen procedure is usually flexible sigmoidoscopy. Although they are not the same, a colonoscopy and a sigmoidoscopy are related procedures. While a colonoscopy looks at the entire big bowel, a sigmoidoscopy just looks at the sigmoid, which is the farthest portion of the colon. The doctor can view the interior of the large intestine from the rectum to the sigmoid, or left side of the colon, using flexible sigmoidoscopy. The process can be used by doctors to identify the source of constipation, abdominal pain, or diarrhea. In the descending colon and rectum, they also utilize it to check for benign and malignant polyps as well as early indications of cancer. The doctor can see intestinal bleeding, inflammation, abnormal growths, and ulcers in the descending colon and rectum during flexible sigmoidoscopy.
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TRUE / FALSE. once the monitor finishes processing the character on the screen, dsr[15] becomes 1
Answers
Once the monitor finishes processing the character on the screen, dsr[15] becomes 1. False. The statement is incorrect.
The DSR (Data Set Ready) signal is a hardware signal typically used in serial communication protocols. It is a handshake signal indicating the readiness of a data set or device to receive or send data. In the context of a monitor, DSR is not directly related to processing characters on the screen.
The processing of characters on a monitor typically involves the rendering of pixels based on the input data. Once the rendering process is completed, the monitor may update the screen accordingly. However, this process does not automatically trigger a change in the DSR signal. The DSR signal depends on the specific hardware and communication protocol being used and is typically controlled by the transmitting or receiving device, not the monitor itself.
Therefore, the statement that DSR[15] becomes 1 after the monitor finishes processing a character on the screen is false. The completion of character processing on the screen does not have a direct impact on the DSR signal.
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what is the condition for sampling frequency to reconstruct the information signal ?
Answers
A continuous time-varying 1-D signal is sampled by narrow sampling pulses at a regular rate fr = 1/T, which must be at least twice the bandwidth of the signal. At first, it may be somewhat surprising that the original waveform can be reconstructed exactly from a set of discrete samples.
You toss two coins. If you get heads with the first coin, you stop. If you get tails, you toss it again. The second coin is tossed regardless. What is the ratio of heads to tails?
Answers
Answer:
1:1
Explanation:
A coin has either a head or tail.
Thus, probability of head = ½
Probability of tail = ½
The first coin is tossed twice and probability of head or tail on both tosses is still ½. Thus, they will have a ratio 1:1.
The second coin is still tossed regardless and thus continuously and so should have same ratio of 1:1.
Therefore, the ratio of the both of them must, also be 1:1.
What is the capacity of the machine in batches?
Answers
g If the rails are originally laid in contact, what is the stress in them on a summer day when their temperature is 31.0
Answers
A) The amount of space must be left between adjacent rails if they are just to touch on a summer day when their temperature is 31.0 °C is; 0.6048 cm
B) The stress in the rails on a summer day when their temperature is 31.0 °C is; 86.4 × 10⁶ Pa
Linear Thermal Expansion
We are given;
Length; L = 14 m
Initial Temperature; T_i = −5 °C
Final Temperature; T_f = 31 °C
The formula for Linear Thermal Expansion is;
ΔL = L_i * α * ΔT
where;
L_i is initial length
α is thermal expansion
ΔL is change in length
ΔT is change in temperature
Now, the thermal expansion of steel from online tables is α = 1.2 × 10⁻⁵ C⁻¹
Thus;
ΔL = 14 * 1.2 × 10⁻⁵ * (31 - (-5))
ΔL = 6.048 × 10⁻³ m = 0.6048 cm
The formula to get the stress is;
σ = Y * α * ΔT
where;
Y is young's modulus of steel = 20 × 10¹⁰ Pa
α is thermal expansion
ΔT is change in temperature
Thus;
σ = 20 × 10¹⁰ × 1.2 × 10⁻⁵ × (31 - (-5))
σ = 86.4 × 10⁶ Pa
The complete question is;
Steel train rails are laid in 14.0-m long segments placed end to end. The rails are laid on a winter day when their temperature is −5 °C.
(a) How much space must be left between adjacent rails if they are just to touch on a summer day when their temperature is 31.0 °C?
(b) If the rails are originally laid in contact, what is the stress in them on a summer day when their temperature is 31.0 °C?
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Fuel filter replacement is being discussed. Technician A states that the first step in fuel filter replacement is
to drain the fuel tank completely. Technician B states that a scan tool may be required to relieve fuel
pressure before service on GDI engines. Who is correct?
Select one:
Oa. Technician A only
O b. Technician B only
O c. Both Technicians A and B
O d. Neither Technician A nor B
Answers
The correct answer is: b. Technician B only.
Technician B is correct that a scan tool may be required to relieve fuel pressure before service on Gasoline Direct Injection (GDI) engines. GDI engines operate at a higher fuel pressure than traditional fuel injection systems, and therefore, the fuel system must be depressurized before the fuel filter is replaced. Technician A is incorrect as draining the fuel tank is not typically necessary for fuel filter replacement.
An electrician who must know how to disassemble and reassemble magnetic motor starters is an)
residential electrician
commercial electrician
O industrial electrician
o electrical maintenance electrician
Answers
The electrician described in the question is called an; D: electrical maintenance electrician
Who is an Electrician?An industrial maintenance/electrician is one who is tasked with the responsibility of installing and maintaining electrical systems in different industries.
Now, in this question we are told that the electrician disassemble and reassemble magnetic motor starters . This type of electricians are usually called Industrial/Electrical Maintenance Electricians.
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A rectangular storage container with an open top and a square base has a volume of 8 cubic meters. material for the base costs $5 per square meter and material for the sides $2 per square meter. find a formula that expresses the total cost of materials as a function of the length of a side of the base.
Answers
Answer:
C(h,w)=5w²+8(h*w)
Explanation:
Let w be the name of the width of this storage.
Let h be the height of the storage.
Constraint: w²h=8 cubic meters.
Taking into acount that the base of this storage is a square, width=length.
Area of the base: w²
•The cost of the base is given by:
C(b)=$5*w²=
5w²
•The cost of the sides is given by:
C(s)={$2*(h*w)}*4
We multiply by 4 because there are 4 sides.
C(s)=8(h*w)
•The total cost should be given by:
C(h,w)=5w²+8(h*w)
-------------------------------------------------------------------------------------------------------
To verify this answer let's illustrate an example and solve it.
Let's say we have a storage with a base of 9m² (3 by 3, each side=3) and then the height of the storage is 4m.
Let's plug the values into the formula and try to find the total cost:
C(4,3)=5(3)²+8(4*3)= $141.
Area of the base was 9, 9*5= $45.
Area of the 4 sides should be 4*3*4= 48, 48*2= $96
$45+$96= $141, that's correct!
FILL THE BLANK.
question 3 a(n) __________ license allows authors to set conditions for the free use and distribution of their work.
Answers
The Correct answer is A(n) open-source license allows authors to set conditions for the free use and distribution of their work.
An open-source license is a legal instrument that grants permission to individuals or organizations to use, modify, and distribute software or creative works. This type of license promotes collaboration and encourages the sharing of knowledge and innovations. Open-source licenses provide specific terms and conditions that outline the rights and responsibilities of users, ensuring that the original authors' intentions are respected.
Open-source licenses have played a pivotal role in the growth of the open-source movement, which fosters a culture of transparency, collaboration, and community-driven development. By granting freedoms to users, such licenses enable a wide range of individuals and organizations to benefit from and contribute to the development of software and creative works.
Open-source licenses have been adopted by numerous projects and communities worldwide, leading to the creation of robust ecosystems, increased innovation, and the democratization of technology. The use of open-source licenses has facilitated the development of renowned software projects like Linux, Apache, and MySQL, while also promoting the sharing and dissemination of knowledge in various fields
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. A storm sewer is carrying snow melt containing 1.200 g/L of sodium chloride into a small stream. The stream has a naturally occurring sodium chloride concentration of 20 mg/L. If the storm sewer flow rate is 2,000 L/min and the stream flow rate is 2.0 m3 /s, what is the concentration of salt in the stream after the discharge point? Assume that the sewer flow and the stream flow are completely mixed, that the salt is a conservative substance (it does not react), and that the system is at steady state.
Answers
Answer:
Explanation:
In the steady state total volume going out will be equal to total volume coming in , and
total salt coming in = total salt going out
Total volume coming in per minute = 2000 + 2 x 10³ x 60
= 122000 L .
Total salt coming in per minute = 1200 x 2000 + 20 x 2 x 10³ x 60
= 2400000 + 2400000 mg
= 4800000 mg
volume of water going out per minute = 122000 L
Total salt going out per minute = 4800000 mg
concentration of water going out = 4800000 / 122000
= 39.344 mg / L
Which one of the following is not an economic want?
Answers
The available options are:
a. Want for a television set
b. Want for medical attention
c. Want for friendship
d. Want for new clothing
Answer:
Want for friendship
Explanation:
Given that economic want is what humans desire to have or possess such that they pay money to acquire them.
Hence, from the available options "want for friendship " is not economic want because it can't be bought with money, while other options can be bought with money or monetary transaction.
increasing capacity just before a bottleneck operation will improve the output of the process.
a. true
b. false
Answers
Answer: true
Explanation: I haves
Explain the concept quality
Answers
Answer:
Hey there!
Explanation:
This is your answer....
The standard of something as measured against other things of a similar kind; the degree of excellence of something.
OR
Quality engineering is the discipline of engineering concerned with the principles and practice of product and service quality assurance and control. In software development, it is the management, development, operation and maintenance of IT systems and enterprise architectures with a high quality standard.
Hope it helps!
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Have a good day!^^
As discussed in the text, one possible performance enhancement is to do a shift and add instead of an actual multiplication. Since 9 x 6, for example, can be written (2 x 2 x 2 + 1) x 6, we can calculate 9 x 6 by shift ing 6 to the left 3 times and then adding 6 to that result. Show the best way to calculate 0 x33 x 0 x 55 using shift s and adds/subtracts. Assume both inputs are 8-bit unsigned integers.
Answers
Answer:
The best way to calculate 0 x33 x 0 x 55 using shift s and adds/subtracts and assuming both inputs are 8-bit unsigned integers is attached below
Which flower should be your focal flower in a triangular arrangement?
answer choices
a. the focal can be any flower
b. the smallest least open flower
c. the flower that is a different color from the others
d. the largest, most open flower
Answers
Answer: A
Explanation:
4.
error occurs when the measurement we think we see is not the
measurement being indicated by the instrument.
A. Positioning
B. Operator bias
C. Instrument
D. Observational
Answers
Answer: observational error
Explanation:
An Error occurs when the measurement is actually done by the Observational approach. Thus, the correct option is D.
What is an ideal method of measurement?The ideal methods of measurement are subdivided into two methods: They are as follows:
Direct measurement method.Indirect measurement method.The Direct measurement method involves the utilization of instruments such as micrometers, vernier calipers, coordinate measuring machines, etc. In this method, the unknown quantity is directly compared with the standard quantity.
In the Indirect measurement method, the physical parameter of the quantity is measured with the help of the direct method.
Positioning of the required quantity, operator-biased measurement, and the utilization of instruments for estimating the measurement of any unknown value are generally favored in order to eliminate the chances of errors.
Therefore, an Error occurs when the measurement is actually done by the Observational approach. Thus, the correct option is D.
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What major financial flop led to the end of the Sega Dreamcast and ultimately caused Sega to stop making game consoles altogether?
1: The founder and CEO of Sega was found to be secretly skimming money off of the top of profits, leading to widespread distrust by the public and a sharp decline in sales until they ultimately had to shut down due to making no profit.
2: A small group of employees found a way to drain all of the Sega Corporation funding accounts and flee the country with all of the money, never to be heard from again.
3: A game called Shenmue, that cost more than $70 million to make, meant that everyone who owned a Dreamcast needed to buy two copies of the game just for Sega to make back the money they had spent to develop it-which didn't happen.
4: A game called Katamari Damacy that carried a virus that would infect any console that it was played on forced Sega to spend millions of dollars in refunds and bankrupted the company.
Answers
Answer:
The major financial flop that led to the end of the Sega Dreamcast and ultimately caused Sega to stop making game consoles altogether is:
3: A game called Shenmue, that cost more than $70 million to make, meant that everyone who owned a Dreamcast needed to buy two copies of the game just for Sega to make back the money they had spent to develop it-which didn't happen.
Explanation:
Shenmue, released on December 29, 1999, was created for Dreamcast by Suzuki. It was widely described as the most expensive video game ever produced. It had an estimated production and marketing cost of between US$47 and $70 million, according to the latest available data.