Lecture : Java Tutorial for Beginners

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sharathkumarsk169

18 Mar 2023

School

Anna University - Coimbatore

Department

Engineering

Course

18DS001

Professor

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Document Summary

Mosh is a software engineer with two decades of experience and he"s taught over 3 million people how to code. He"s designed this course for anyone who wants to learn java if you"re a beginner do n"t worry i "ll make java super simple and hold your hands through this entire course. I hope you"ll stick around and learn this beautiful and powerful programming language. We "re gon na look at the anatomy of a java program in this java tutorial. The smallest building block in java programs are functions if function is a block of code that performs a task as a metaphor think of the buttons on the remote control of your tv. Intellij idea is absolutely free and it "s more than enough for this course so download all right now. After the parentheses we had a pair of curly braces and inside these braces we write the actual java code.

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You will require at least 5 varied annotations per age with an exception of 3 annotations for the last page (commentary, summary per page, text connections, unknown words) and should identify a minimum of 5 figurative language / literary devices throughout the story. This means that you should have a minimum of 18 annotations.

You will use the cursor highlight and comment function to complete your textual annotations, being sure to clearly identify (IN ALL CAPS) what type of annotation you are doing (i.e. COMMENTARY, SUMMARY, TEXT CONNECTION, UNKNOWN WORD, LITERARY DEVICE) and then explaining why you identified it, what it means, and/or what the connection is.

About the Author: Kate Chopin (1850-1904) was a renowned feminist author of the late 19 th century. During this period, which was also known as the Victorian Era (1837-1901), women had very little control over their own hives, and many female thinkers like Chopin fought hard for social change

[1] Knowing that Mrs. Mallard was afflicted with a heart trouble, great care was taken to break to her as gently as possible the news of her husband's death.

It was her sister Josephine who told her, in broken sentences; veiled hints that revealed in half concealing, Her husband's friend Richards was there, too, near ber It was he who had been in the newspaper office whep intelligence of the railroad disaster was received, with Brently Mallard's name leading the list of "killed." He had only taken the time to assure himself of its truth by a second telegram, and had hastened to forestall any less careful, less tender friend in bearing the sad message.

She did not hear the story as many women have heard the same, with a paralyzed inability to accept its significance. She wept at once, with sudden, wild abandonment, in her sister's amm. When the storm of grief had spent itself she went away to her room alone. She would have no one follow her.

There stood, facing the open window, a comfortable, roomy armchair. Into this she sank, pressed down by a physical exhaustion that haunted her body and seemed to reach into her soul.

[5] She could see in the open square before her house the tops of trees that were all aquiver with the new spring life. The delicious breath of rain was in the air. In the street below a peddler was cry ing his wares. The notes of a distant song which some one was singing reached her faintly, and countless sparrows were twittering in the eaver.

She was young with a fair, calm facs, whose lines bespoke repression and even a certain strength. But now there was a dull stare in her eyes, whose gaze was fixed away off yonder on one of those patches of blue sky. It was not a glance of reflection, but nether indicated a suspension of intelligent thought.

There was something coming to her and she was waiting for it, fearfully. What was it? She did not know; it was too subtle and elusive to name. But she felt it, creeping out of the skyy reaching toward her through the sounds, the scents, the color that filled the air

[10] Now her bosom rose and fell tumultuously She was beginning to recognize this thing that was approaching to possess her, and she was striving to beat it back with her will - as powerless as her twa white slender hands would have been. When she abandoned herself a little whispered ward escaped her slightly parted lips. She said it over and over under her breath: "free, "free, freel". The vacant stare and the look of tenor that had followed it went from her eyes. They stayed keen and bright. Her pulses beat fast, and the coursing blood warmed and relaxed every inch of her body.

She did not stop to ask if it were or were not a monstrous joy that beld her A clear and exalted perception enabled her to dismiss the suggestion as trivial. She lanew that she would weep again when she saw the kind, tender hands folded in death; the face that had never looked save with love upon her, fixed and gray and dead. But she saw beyond that bitter moment a long procession of years to come that would belong to her absolutely. And she opened and spread her arms out to them in welcome.

There would be no one to live for during those coming years; she would live for herself. There would be no powerful will bending hers in that blind persistence with which men and women believe they have a right to impose a private will upon a fellow-creature. A kind intention or a cruel intention made the act seem no less a crime as she looked upon it in that brief moment of illumination.

And yet she had loved him _ sometimes. Often she had not. What did it matter! What could love, the unsolved mystery, count for in the lace of this possession of self-assertion which she suddenly recognized as the strong est impulse of her being!

"Free! Body and soul free" she kept whispering.

[15] Josephine was kneeling before the closed door with her lips to the keyhole, imploring for admission. "Louse, open the door! [ beg; open the door - you will

make yourself ill. What are you doing, Louise? Far heaveris sale open the door"

"Go away. I am not making myself ill. No, she was drinking in a very elixir of life through that open window.

Her fancy was running riot abng those days ahead of her Spring days, and summer days, and all sorts of days that would be her own. She breathed a quick prayer that life might be long. It was only yesterday she had thought with a shudder that life might be long.

She arose at length and opened the door to her sister's importunities. There was a feverish triumph in her eyes, and she carried herself unwittingly like a goddess of Victory. She clasped her sister's waist, and together they descended the stairs. Richands stood waiting for them at the bottom.

Some one was opening the front door with a latchkey. It was Brently Mallard who entered, a little travel-stained, composedly carrying his grip-sack and umbrella. He had been far from the scene of the accident, and did not even know there had been one. He stood amazed at Josephine's piercing ay; at Richards' quids motion to screen him from the view of his wife.

[20] When the doctors came they said she had died of heart disease - of the joy that kills.

theyyadoree.nia999

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Cornerstone Readings: “Somebody Has to Pay: Audley Moore, Mother of the Reparations Movement”

Reading 1: “Somebody Has to Pay: Audley Moore, Mother of the Reparations Movement” Written by Ashley Farmer, Published by The African American Intellectual History Society (June 17, 2015)

This text provides background on “Queen Mother” Audley Moore, a prominent activist who fought for reparations for American citizens of African descent.

With Ta-Nehisi Coates[’] celebrated article, “The Case for Reparations,” and the recent awarding of reparations to victims of police torture in Chicago, repayment for racism and racial violence is part of public debate again. While many know of the recent, mainstream efforts to secure reparations for African Americans, few know of the African American woman activist that jumpstarted reparations activism in the 20thcentury.“Queen Mother” Audley Moore’s activist life spanned eight decades; much of which she dedicated to fighting for reparations. Her reparations advocacy traversed multiple organizations, geographical locations, and ideological affiliations.

Moore was born in New Iberia, Louisiana in the 1890s and raised amid the rise of the Jim Crow South. Looking to escape the harsh life of the south, she migrated to Harlem in the 1920s. After joining several radical organizations including the Communist Party and Marcus Garvey’s Universal Negro Improvement Association (UNIA), Moore returned to her home state in 1955.

In 1957, she founded the Universal Association of Ethiopian Women (UAEW) and started to research reparations. UAEW members, at Moore’s behest, began a campaign to encourage African Americans to file a formal reparations claim with the U.S. government before the end of 1963 (100 years after the signing of the Emancipation Proclamation). To advance this agenda, she moved to Philadelphia and led the National Emancipation Proclamation Observance Committee (NEPOC) in 1962. Tasked with planning the celebration of the centennial anniversary of the Emancipation Proclamation, Moore and her followers converted the commemoration into an opportunity to develop a national reparations campaign. The NEPOC developed a reparations claim for approximately 36 million dollars in back pay to be used for African American emigration to Africa, cultural and political development in black communities, and past wages for those who wanted to remain in America.[1]

Moore gained the most traction for her reparations activism among activists in Southern California. With a group of L.A.-based black organizers, she founded the Reparations Committee for the Descendants of American Slaves. As the leader of the Reparations Committee, Moore published an extensive analysis of reparations: Why Reparations? Reparations Is the Battle Cry for the Economic and Social Freedom of More than 25 Million Descendants of American Slaves.

In Why Reparations, Moore defined reparations, established a historical basis for restitution and laid out her program for payment distribution. For the Louisiana-born activist, reparations was a means for “amends or compensation” for the “loss or damage” of African American lives and labor. Moore claimed that her call for “money damages, for the loss of their ancestors’ fair share of property which accrued by reason of their skills and labors” was not “without apt precedents in the field of law and nations.” She cited payments from West Germany and Finland, as well as the United States’ compensation of Japanese Americans, as evidence that reparations were a standard practice.

Moore also offered her plan for how the funds should be distributed. “The Reparations payment,” Moore argued, would be used to end the poverty of “Americans citizens of African descent.” She proposed job quotas or “immediate hiring on a quota basis in every level of our industry, implemented with an intensified on the job training program.” Key to Moore’s vision was that repayment should come in the form of wholesale economic advancement for African Americans rather than the US government doling out “a few thousand dollars for one group” to control. She argued that calls for freedom and justice were “empty slogans” without forcing America to reckon with its racist past through reparations.[2]

During the 1960s and 1970s, Audley Moore convinced a new generation of activists of the need for reparations. She mentored many black power radicals including members of the Black Panther Party, the Republic of New Africa, and the Revolutionary Action Movement. Each of these groups incorporated reparations into their political program and many credit Moore with helping them develop their reparations framework.

Queen Mother Moore argued that reparations are “the most basic question before us” and that it was the “crux” of the problem of race relations in America. While she was serious about repayment for the atrocities of slavery and Jim Crow, Moore’s larger point was about the benefits of reparations activism and reparations as social movement. Justifying reparations requires a substantive engagement with the contours, layers, and intersections of white supremacy and patriarchy. Theorizing how reparations might be distributed reveals new points of convergence and community among people of African descent. In a world where we can’t go a week without another black person becoming a hashtag and the trauma of racial violence is continually on loop, Moore’s claim that reparative justice must accompany prosecutorial measures seems to be the “crux” of the solution.

What are reparations used for currently?

What is “Queen Mother” Audley Moore known for?

What were some of “Queen Mother” Audley Moore’s early influences?

Discuss the organizations in which “Queen Mother” Audley Moore had a leadership role. What were some of their accomplishments? Cite evidence in your response.

What are the reparations referenced in her article, “Why Reparations?” How did she support her request? Cite evidence in your response.

How did “Queen Mother” Audley Moore want to use and distribute the reparations? Cite evidence in your response.

Which groups did “Queen Mother” Audley Moore influence? Underline your response.

Discuss some of the underlying ideas behind the reparations movement.

Source:

123

Saturn V First-Stage Structural Analysis The first stage of the Saturn V (also called the S-IC) provided thrust to lift the second stage, third stage, and payload to an altitude of about 100km within the first 150 seconds of flight, at which point it experienced a maximum acceleration of 38𝑚/𝑠2 . The first stage structure (the shell around the propellant tanks) transmitted the force produced by the engines to the upper stages through its outer skin. This skin was composed of 2219-T87 aluminum, which has a Young's modulus of 73.1GPa, a yield strength of 390MPa, a density of 2840 𝑘𝑔/𝑚3 , and a thermal expansion coefficient of 22 ∗ 10-6𝐾-1 . We will perform an analysis of the S-IC structure and the loads it carried through a series of scenarios. The exception is for Part 5, which must be done by hand as it requires significant drawing and only uses symbolic variables, no numerical calculations. I also recommend setting up the equations for Part 4 by hand and then using the .m file to perform the actual computations.

Part 1:

The S-IC stage shell was required to support the load of the second stage, third stage, instrument unit, and Apollo spacecraft modules, both on the pad and during launch. The maximum mass it had to support was when the fully-fueled vehicle was sitting on the pad, and the maximum acceleration it experienced was immediately before stage burnout (when the S-IC was empty but all the other stages were full). Assume the S-IC tank structure is a smooth cylinder with an outer diameter of 10 meters, a thickness of 5.5 mm, and a height of 41 meters when nothing is mounted on top of it. The empty mass of everything above the stage is 9.7 ∗ 104 𝑘𝑔, and the mass of everything above the stage is 2.9 ∗ 106 𝑘𝑔 when fully fueled.

Find:

• How much the stage shrinks when the empty stages are placed atop the S-IC

• How much the stage shrinks when the vehicle is fully fueled

• How much the stage shrinks under full acceleration

• The average axial stress experienced in each of these three cases

• The factor of safety in each of these three cases Ignore the mass of the S-IC structure itself and propellant; all we care about is how the tank has to deal with supporting the masses above it.

Part 2:

In reality, the stage did not have a uniform cross section; it was composed of steps of decreasing thickness toward the top of the S-IC, to save structural mass. Suppose the tank wall thickness decreased from 6.5 mm at the bottom to 4.3 mm at the top in eight steps of equal height. Each of the eight "rings" would have a constant wall thickness, the same height as the other rings, and the total height of the stage would still be 41 meters. Repeat the first three bullet points from Part 1, to find how much the stage will contract with the stepped cross sections instead of the uniform. Additionally, find the mass savings by constructing the tank in this manner.

Part 3:

If the 41m height measurement given in Part 1 was taken at an ambient temperature of 25C, how much would the entire S-IC shrink due to thermal contraction (with no load atop the stage) at an operating temperature of -100C? You may choose either the uniform or stepped cross-section configuration from Part 1 or Part 2 to solve this problem, but there is one optimal solution within the scope of this project. Explain which option you chose and why.

Part 4: Consider the planar truss section shown. Suppose four of these held the S-IC stage upright on the mobile launch platform. If the weight each had to support was 6.9MN (labeled F in the diagram), find the reaction forces at joints B and C (a total of three quantities) and the internal forces in the rods AB, AC, and BC. You may assume that the load is balanced and there is no moment about point A. ABC is an equilateral triangle. Be sure to include your sanity check of the static equilibrium of the whole structure. Briefly describe why the analysis would be complicated by making point C a fixed reaction joint like point B instead of a roller joint.

Part 5: Draw a SMD for the transverse axis of the S-IC using symbolic values (no numbers). The diagram should reflect: 1. A constant, even transverse pressure the vehicle experiences due to wind at the pad (note that this must include the wind pressure experienced by the upper stages, collectively referred to as 𝑃𝑊). 2. The fixed base of the vehicle on the pad. 3. A fueling arm located at 𝑙/2 from the base of the rocket that exerts a load 𝑃𝑓 in a direction counter to the wind. 𝑃𝑓 is not large enough to counteract all the shear experienced by the stage at station 𝑙/2. 07 Apr 2022 Hint: for this problem, continue drawing the SMD along the X axis, with the fixed base at the bottom of the rocket.

Part 6:

The LOX tank bottom is hemispherical, with a total tank height of 19.5 meters tip-to-tip. Suppose the tank were pressurized to 151 kPa and contained LOX with a density of 1141 𝑘𝑔/𝑚3 . Use the Bernoulli equation to find the pressure at the bottom of the tank (at surface gravity) and the thin wall pressure vessel stress experienced by the bottom of the hemispherical tank bottom. At burnout, the tank was empty of liquid oxygen but still under gaseous pressure of 151 kPa. Find the longitudinal and circumferential stresses about the central cylindrical section of the tank. For this part, ignore acceleration, axial forces, thermal deformation, ambient pressure, etc.

Part 7: Even if composite materials (like carbon fiber) had been widely available in the 1960s, give three reasons why they would be less desirable for an application like the S-IC stage than aluminum or titanium

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Lecture : Java Tutorial for Beginners

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