Science Project
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Mars is red due to iron oxide in its soil and has a thin atmosphere composed primarily of carbon dioxide. Only one third of spacecraft sent to Mars have been successful. Going to Mars would be an important part of the space program, but it is also very dangerous and expensive, costing around $20 million and requiring two years to travel there and back. Some problems with human missions to Mars include exposure to radiation, and limited oxygen and food on the long trip.
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Many scientists consider Mars and Earth twins because of the similarities between the planets. But they aren't entirely alike. Some challenges would need to be overcome before humans could start calling Mars home.. Mars is the fourth planet from the Sun and the next planet beyond Earth. It is, on average, more than 142 million miles from the Sun. Mars turns on its axis more slowly than Earth does. So, a day on Mars is 24.6 hours.This gives basic information about the Mars planet and it's sustainability.
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To survive on Mars, humans would need protective equipment and shelters to withstand the cold temperatures ranging from -120 to -5 degrees Celsius. Mars has a thin atmosphere composed mainly of carbon dioxide with small amounts of other gases. The atmospheric pressure is much lower than Earth. The gravity on Mars is about 38% of Earth's gravity.
The atmosphere on Uranus consists mostly of hydrogen and helium with some methane. It has an average temperature of -210 degrees Celsius. Uranus does not have a solid surface, but instead has an extended liquid interior layer consisting of icy materials like water, methane and ammonia. Both Mars and Uranus present challenging environmental conditions that would require significant technological adaptations for human survival and
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To survive on Mars, humans would need oxygen tanks and protective gear as Mars' atmosphere is thin and composed mainly of carbon dioxide. The temperature ranges from -120 to -5 degrees Celsius. Gravity is lower at 38% of Earth's. Mars has a rocky surface and two small moons.
To survive on Uranus, humans would need oxygen tanks and protective gear to withstand the hydrogen-rich atmosphere and extremely cold temperatures averaging -210 degrees Celsius. Uranus has no solid surface but instead has an icy interior and methane clouds. It has several small moons with the largest being Titania.
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To survive on Mars, humans would need protective equipment and shelters to withstand the thin carbon dioxide-rich atmosphere, average temperatures ranging from -120 to -5 degrees Celsius, and low surface gravity of 38% of Earth's. The conditions on Uranus present even greater challenges, with an atmosphere over 80% hydrogen and 15% helium, average temperature of -210 degrees Celsius, and no solid surface under its liquid methane ocean. Both planets would require enclosed self-sustaining environments and life support systems to enable human habitation.
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I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
A Deep Dive into ScyllaDB's Architecture
This talk will cover ScyllaDB Architecture from the cluster-level view and zoom in on data distribution and internal node architecture. In the process, we will learn the secret sauce used to get ScyllaDB's high availability and superior performance. We will also touch on the upcoming changes to ScyllaDB architecture, moving to strongly consistent metadata and tablets.
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-Efficiency
Freshworks creates AI-boosted business software that helps employees work more efficiently and effectively. Managing data across multiple RDBMS and NoSQL databases was already a challenge at their current scale. To prepare for 10X growth, they knew it was time to rethink their database strategy. Learn how they architected a solution that would simplify scaling while keeping costs under control.
Dandelion Hashtable: beyond billion requests per second on a commodity server
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
Skybuffer SAM4U tool for SAP license adoption
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
JavaLand 2024: Application Development Green Masterplan
My presentation slides I used at JavaLand 2024
Main news related to the CCS TSI 2023 (2023/1695)
An English 🇬🇧 translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers.
The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...
Folding is a recent technique for building efficient recursive SNARKs. Several elegant folding protocols have been proposed, such as Nova, Supernova, Hypernova, Protostar, and others. However, all of them rely on an additively homomorphic commitment scheme based on discrete log, and are therefore not post-quantum secure. In this work we present LatticeFold, the first lattice-based folding protocol based on the Module SIS problem. This folding protocol naturally leads to an efficient recursive lattice-based SNARK and an efficient PCD scheme. LatticeFold supports folding low-degree relations, such as R1CS, as well as high-degree relations, such as CCS. The key challenge is to construct a secure folding protocol that works with the Ajtai commitment scheme. The difficulty, is ensuring that extracted witnesses are low norm through many rounds of folding. We present a novel technique using the sumcheck protocol to ensure that extracted witnesses are always low norm no matter how many rounds of folding are used. Our evaluation of the final proof system suggests that it is as performant as Hypernova, while providing post-quantum security.
Paper Link: https://eprint.iacr.org/2024/257
High performance Serverless Java on AWS- GoTo Amsterdam 2024
Java is for many years one of the most popular programming languages, but it used to have hard times in the Serverless community. Java is known for its high cold start times and high memory footprint, comparing to other programming languages like Node.js and Python. In this talk I'll look at the general best practices and techniques we can use to decrease memory consumption, cold start times for Java Serverless development on AWS including GraalVM (Native Image) and AWS own offering SnapStart based on Firecracker microVM snapshot and restore and CRaC (Coordinated Restore at Checkpoint) runtime hooks. I'll also provide a lot of benchmarking on Lambda functions trying out various deployment package sizes, Lambda memory settings, Java compilation options and HTTP (a)synchronous clients and measure their impact on cold and warm start times.
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Science Project
- 1. THE SOLAR SYSTEM: TRIP TO MARS BY SAMI
- 2. MARS IS RED BECAUSE OF IRON OXIDE
- 3. IT HAS A VERY THIN ATMOSPHERE, MADE MOSTLY OF CARBON DIOXIDE
- 4. ONLY ONE THIRD OF THE SPACECRAFTS SENT TO MARS HAVE BEEN SUCCESSFUL
- 5. GOING TO MARS WOULD BE AN IMPORTANT PART OF THE SPACE PROGRAM
- 7. IT WOULD BE VERY DANGEROUS AND EXPENSIVE ...
- 8. … AND IT WOULD COST ABOUT 20 MILLION DOLLARS AND TAKE TWO YEARS TO GO THERE AND COME BACK
- 9. IT MIGHT BE POSSIBLE FOR HUMANS TO LIVE ON MARS FOR A SHORT PERIOD OF TIME
- 11. THE FIRST MANNED MISSION COULD BE “ALREADY” THIS CENTURY
- 12. THERE ARE SOME PROBLEMS WITH GOING TO MARS
- 13. ASTRONAUTS GET EXPOSED TO A LOT OF DANGEROUS RADIATION IN SPACE
- 14. OXYGEN OR FOOD COULD RUN OUT ON THE TWO-YEAR TRIP
- 15. THE LOW GRAVITY ON MARS MIGHT ALSO BE HARMFUL TO HUMANS
- 17. THE END
- 18. SOURCES PG. 1 - MARS: WWW.HOAX-SLAYER.COM PG. 6 - SPACE ROCKET: FUTURISMIC.COM PG. 10 - HUMANS ON MARS: WWW.NEWSCIENTIST.COM INFORMATION FROM EN.WIKIPEDIA.ORG AND FACTS.RANDOMHISTORY.COM