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What is arguably the best military aircraft the US has ever employed?Wow, that is tough. There are quite a few that qualify for that honor, especially if we evaluate them against other aircraft of the same period.In my lifetime aircraft have come and gone many really good aircraft have had operational and combat life spans shorter than mine, with one exception,The Boeing B-52H Stratofortress, aka the BUFF (Big Ugle Fat F**ker)She is older than I am and I'm 60. Early in my Dad's Air Force Career he took me as a toddler out to see the first BUFF's landing at Blythville AFB in Arkansas. He went on to a long full Air Force Career, I grew up and also had a full and long Air Force career, my son went in the Air Force and had a long and full career, but the BUFF she is still flying combat missions.(From wikipedia)She is about to get long overdue new engines that are more powerful as well as less expensive to operate from both maintenance and fuel considerations, and she is presently scheduled to not be retired until 2050. So some of my grandbabies will also have full and long Air Force careers and retire from the Air Force before the BUFF does (If it ever does). I'll most likely be dead before the then 100+ year old B-52 is finally retired.We have seen other bombers retired because she came along and rightfully so, but we have also seen other dedicated bombers come and go and she has outlasted them. The B-58 and B-1 supersonic bombers will both have retired before her, as will the FB-111 and F-105 and even the B-2 Stealth Bomber (the B-21 is supposed to replace the B-52…we shall see how that works out). Then there is a whole slew of other aircraft that have been used for bombing that have also come and gone.The only thing that comes close to her in age that is programmed to once again have its retirement pushed back significantly is the Boeing KC-135 Stratotanker. However the F-15 and F-16 seem to be building the same sort if legacy, they are even called legacy fighters.This isn't an aircraft that is no longer performing its primary mission and has found another niche to extend their usefulness. She is our frontline Bomb Truck, almost every bombing campaign conducted by the Air Force includes B-52's or often is only using B-52's and an F-15 escort as need be.A recent retrofit in her rotary launcher increases the number of Extended Range, Stand Off Missiles she can carry. Oh, those can be nukes as well. She is, and most likely will always be our best Strategic Bomber. Not the prettiest or most graceful aircraft, but she gets the job done well.The last I heard she will be getting Rolls Royce engines, sorta poetic even if it isn't American made. She deserves the prestige and reliability of Rolls Royce.General characteristics (From wikipedia)Crew: 5 (pilot, copilot, weapon systems officer, navigator, electronic warfare officer, and tail gunner until the removal of the tail gun in 1991)Length: 159 ft 4 in (48.5 m)Wingspan: 185 ft 0 in (56.4 m)Height: 40 ft 8 in (12.4 m)Wing area: 4,000 sq ft (370 m²)Airfoil: NACA 63A219.3 mod root, NACA 65A209.5 tipEmpty weight: 185,000 lb (83,250 kg)Loaded weight: 265,000 lb (120,000 kg)Max. takeoff weight: 488,000 lb (220,000 kg)Fuel capacity: 47,975 U.S. gal (39,948 imp gal; 181,610 L)Zero-lift drag coefficient: 0.0119 (estimated)Drag area: 47.60 sq ft (4.42 m²)Aspect ratio: 8.56Powerplant: 8 × Pratt & Whitney TF33-P-3/103 turbofans, 17,000 lbf (76 kN) eachPerformanceMaximum speed: 560 kn (650 mph, 1,047 km/h)Cruise speed: 442 kn (525 mph, 844 km/h)Combat radius: 4,480 mi (3,890 nmi, 7,210 km)Ferry range: 10,145 mi (8,764 nmi, 16,232 km)Service ceiling: 50,000 ft (15,000 m)Rate of climb: 6,270 ft/min (31.85 m/s)Wing loading: 120 lb/ft² (586 kg/m²)Thrust/weight: 0.31Lift-to-drag ratio: 21.5 (estimated)ArmamentGuns: 1× 20 mm (0.787 in) M61 Vulcan cannon originally mounted in a remote controlled tail turret on the H-model, removed from all current operational aircraft in 1991Bombs: Approximately 70,000 lb (31,500 kg) mixed ordnance; bombs, mines, missiles, in various configurations.Original Question: What is arguably the best military aircraft the US has ever employed?

It bounds query related privacy loss.Suppose you have two smart friends, F1, & F2;got job offers O1 & O2 from a company; andyou expect average of their salary for your offer from the same company.But your friends are not interested to disclose their offer.What will you do to get (O1+O2)/2?Adding NoiseTell them to consider a random number individually secretly, like- r1 for F1, r2 for F2. With these two random numbers you can go through noised and denoised phases to get your desired average.Noised Phase:F1 will give the value of (O1+r1) to F2: F2 don’t know O1F2 will give the value of (O1+r1+O2+r2) to you: you don’t know O1 or O2You will give the value of (O1+r1+O2+r2+ry) to F1: ry is your secret random number.Denoised Phase:F1 will give the value of (O1+r1+O2+r2+ry -r1) to F2 :F2 will give the value of (O1+r1+O2+r2+ry -r1-r2) to you, which is equal to (O1+O2+ry).You will calculate the value of (O1+r1+O2+r2+ry -r1-r2-ry): you know (O1+O2)So, you know the average (O1+O2)/2.This will work for more friends, also. But multiple use of such technique, as a query will fail to keep privacy.Main problem as query:Consider you have another friend F3 with salary O3, and you have done above procedure to get average salary of your three friends, (O1+O2+O3)/3.Now using these two averages, you know what the salary of F3 is.Loss of privacy.Solution with ProbabilityBut if you have infinitely many friends, you can take the help of probability.You can tell everybody a value of RAdvice everybody to add a noise as a random value between zero to R with their respective salary.So, everybody’s noised salary is exposed. But, average of all noises will be R/2.Finally, average salary will be the average of all noised salaries minus R/2.Netflix prize competitionNetflix released movie ratings from subscribers with careful efforts to protect privacy. But, Narayanan and Shmatikov were later able to identify some of the private records, utilizing some auxiliary data available in public dataset.Mathematical Formulation Problem SettingsMathematical formulation of differential privacy decouples attackers from the problem statement.A record corresponds to one individual’s private data, and two databases are neighbors if they are differ by a single such record. Following are the components:D & D′: Two multi-sets of records and neighbors.M: A mechanism that calculates an output given the database.R: Range of MS: Any subset of Rε: A parameter, to be used for trade-off between privacy and accuracyTo certify mechanism M is ε-differentially private, following condition should be satisfied:Probability of [M(D) ∈ S] ≤ exp(ε) · Probability of [M(D′ ) ∈ S].Key parameter ϵIt is the main parameter for privacy assurance. The risk to one’s privacy should be bounded by a parameter ε as a result of participating in a statistical database. If you want more privacy, quality of the database should be degraded more.Also, to generalize differential privacy, another parameter, δ, is used in (ε, δ)-differential privacy.But, not on uniformly differential privacy.More Study:The Algorithmic Foundations of Data Privacy with Instructor: Aaron Roth,A firm foundation for private data analysis,Tutorial on Differential Privacy,Mechanism Design via Differential Privacy,Calibrating Noise to Sensitivity in Private Data Analysis,Differential Privacy in Game Theory and Mechanism Design,Special Topics in Data Privacy,RAPPOR,Learning Statistics with Privacy aided by the Flip of a Coin,An Economic Method for Choosing Epsilon,PINQ, Airavat,Database Privacy,Differential Privacy: The Basics.Quantum PrivacyYou cannot identify person as well as observe personal information simultaneously perfectly.Neural PrivacyHow to use privacy in a neural network database?Privacy Preserving Back-Propagation Neural Network Learning Made Practical with Cloud ComputingIEEE Transactions on Parallel and Distributed Systems, Issue 1, Date Jan. 2014Jiawei Yuan ; Dept. of Comput. Sci., Univ. of Arkansas at Little Rock, Little Rock, AR, USA ; Shucheng Yu.

What do you think about the idea from Tom Cotton of banning Chinese students from studying STEM subjects and make them study Shakespeare?So, you need to know a little bit about the US domestic politics, then you’ll know where Senator Tom Cotton comes from.Basically, there’s a class of US politicians who are accountable to nobody, other than the political money behind them. You see, the US domestic politics is dominated by billionnaires. There are the East Coast banking billionnaires (i.e., Bloomberg). Those are the traditional Republican party. Then there are the West Coast tech billionnaires. Those are mostly democrats. Then there are the mid-west tea-party billionnaires. The likes of Koch Brothers. These guys basically do not want to have ANY REGULATION ON BUSINESS. It was named by Rick Santelli on the floor of Chicago Mercantile Exchange. Rick Santelli is this guy here: CNBC’s Rick Santelli suggests giving everyone coronavirus to spare the economy I mean, I”m still waiting to see him lead by example and wipe his own face with Coronavirus live on CNBC, but no such luck - he only meant that those meatpacking plant workers should be getting the virus, not himself. He should be the one getting the “herd immunity” protection from the masses of poor people and the immigrants.Cut regulation for businesses and cut taxes for the rich. These are the goals. So these guys set off during the last two decades to buy themselves some governors and some senators, and they targeted those small, poor states in the mid-west and in the South. Why? Because those are cheap. A couple million bucks. You can’t buy those in big, rich states like New York and California as easily, because those are big, wealthy states, and a local politician can raise a lot of money locally, $50 million, $100 million, etc., and beat back the onslaught of massive out-of-state cash train.But for States like Arkasas, ranked 47th out of the whole 50 states in GDP per capita, a couple million bucks, and you can run a candidate with spare. So you look at Arkansas (Tom Cotton) and/or Kentucky (Mitch McConnell), these guys have never done anything good for their own states, and their campaign funding are all from big corporations and PACs. Arkansas, for example, is a big agriculture state. Farming and livestock are the biggest industry there. The US is the big exporter and China is the big importer. So why does Tom Cotton jumps out. It doesn’t make any sense. Until you realize that the only thing they need from their state is the zip code.Thus you end up with this bizarre political phenomenon in the United States, where these poor little states who take in the most tax money from the rest of the country, argue the most vehemently for tax cut and deregulation. Bulgaria leading the charge to reduce member contribution to the European Union. Can you even imagine this happening in Europe! Happening in real life in the US!Tea Party movement - WikipediaA corollary feature of American politics is the almost complete separation of the upside vs. the downside. The Responsibility vs. the Power. Chinese graduate students were instrumental in developing the Johns Hopkins Covid-19 tracker that everyone uses. Maybe Mr. Cotton wants to take over the responsibility of writing and maintaining the code himself, after he booted those Chinese students out? Massive numbers of Chinese graduate students and faculties are involved in developing treatment and vaccine. Maybe Mr. Cotton can develop a better vaccine on his own from his basement? Billions of dollars a year goes into US universities and colleges from Chinese students. There’s actually an amazingly simple way to release them from their dependency on the Chinese students. Mr. Cotton, just write the check to the universities and do the work yourself. So simple! Yet so impossible!But he’s not responsible for any of that. He doesn’t have to write check to universities to keep the lights on. He doesn’t have to write the code or develop the vaccine. He doesn’t have to shoulder any responsibilities.This is why the “upper drawers” are occupied by a great bunch of spoiled selfish imbeciles. They never have the responsibility to make anything work, ever, for other people. A “permanent upper class” who gambles, and a “permanent lower class” who pays. But that’s just history repeating itself.