Air France-KLM’s Post

Numerical differential equations often require extensive datasets for testing and validation. In the context of relational datasets, this typically involves organized data structures that can store and manage complex information efficiently. Below are some key points and examples of how relational datasets can be utilized for numerical differential equations: ### Key Concepts 1. **Numerical Differential Equations**: - These are equations involving derivatives of functions with respect to one or more variables, solved using numerical methods rather than analytical solutions. 2. **Relational Datasets**: - Organized collections of data in tables, where relationships between different tables are maintained through keys (primary keys and foreign keys). 3. **Applications**: - Solving ordinary differential equations (ODEs) and partial differential equations (PDEs) in scientific computing. - Simulating physical systems in engineering and physics. - Machine learning applications involving differential equations. ### Structure of Relational Datasets Relational datasets for numerical differential equations may include: 1. **Tables for Initial Conditions**: - Store initial values for variables in the differential equations. - Example: `initial_conditions (id, variable_name, initial_value)`. 2. **Tables for Parameters**: - Store parameter values that are used in the equations. - Example: `parameters (id, parameter_name, parameter_value)`. 3. **Tables for Results**: - Store computed results for different time steps or iterations. - Example: `results (id, time_step, variable_name, value)`. 4. **Tables for Metadata**: - Store information about the datasets, such as source, description, and timestamp. - Example: `metadata (id, description, source, timestamp)`. ### Example in SQL Here's a simplified example of how you might set up and use relational datasets for solving a numerical differential equation, such as the logistic growth model. #### Step 1: Define the Tables ```sql CREATE TABLE initial_conditions ( id INT PRIMARY KEY, variable_name VARCHAR(50), initial_value FLOAT ); CREATE TABLE parameters ( id INT PRIMARY KEY, parameter_name VARCHAR(50), parameter_value FLOAT ); CREATE TABLE results ( id INT PRIMARY KEY, time_step FLOAT, variable_name VARCHAR(50), value FLOAT ); CREATE TABLE metadata ( id INT PRIMARY KEY, description TEXT, source VARCHAR(100), timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP ); ``` #### Step 2: Insert Data ```sql INSERT INTO initial_conditions (id, variable_name, initial_value) VALUES (1, 'population', 100.0); INSERT INTO parameters (id, parameter_name, parameter_value) VALUES (1, 'growth_rate', 0.1); INSERT INTO parameters (id, parameter_name, parameter_value) VALUES (2, 'carrying_capacity', 1000.0); INSERT INTO metadata (id, description, source) VALUES (1, 'Logistic growth model', 'Generated for simulation'); ```

Top Commercial Airplanes in the USA The US skies are filled with a variety of incredible aircraft, each designed for specific travel needs. Here's a quick look at some of the top commercial airplanes you might find yourself on when flying in the USA:

✈ 𝐓𝐡𝐞 𝐄𝐯𝐨𝐥𝐮𝐭𝐢𝐨𝐧 𝐨𝐟 𝐂𝐢𝐯𝐢𝐥 𝐀𝐯𝐢𝐚𝐭𝐢𝐨𝐧 𝐚𝐟𝐭𝐞𝐫 𝐖𝐨𝐫𝐥𝐝 𝐖𝐚𝐫 𝐈𝐈 🌍 Following the end of World War II, on 7th December 1944, the Chicago Convention was signed, establishing global standards for safety and regulation in civil aviation. The creation of the International Civil Aviation Organization (ICAO) 🌐 in January 1945 played a pivotal role in shaping international air transport. The war accelerated technological advancements, and experienced military pilots transitioned to commercial airlines, contributing to the professionalisation of the industry ✈. A significant milestone came in October 1958 with the introduction of the Boeing 707 🛫 – the first commercial jet airliner, which transformed civil aviation. The Boeing 707 offered faster speeds, longer range, and greater passenger capacity than earlier piston-engine aircraft. This innovation made transatlantic flights shorter, more accessible, and affordable, opening new opportunities for international travel 🌍. #CivilAviation #AviationHistory #ICAO #Boeing707 #AirTravel #Aviation

✈ The first commercial passenger flight took place on 1st January 1914 between St. Petersburg and Tampa in Florida. The aircraft, a Benoist XIV piloted by Tony Jannus, carried a single passenger – Abram C. Pheil, the mayor of St. Petersburg. The flight lasted 23 minutes, covering 34 kilometres across Tampa Bay. 💸 The ticket for this flight was auctioned for $400, equivalent to over $10,000 today! This flight was groundbreaking, as it was organised by the St. Petersburg-Tampa Airboat Line, the first regularly scheduled airline offering public transport. Up until then, aircraft flights were predominantly military, experimental, or private endeavours. 🚀 Since then, commercial aviation has continued to evolve, connecting people across the globe. Bartolini Air is proud to be part of this dynamic industry, offering training for the best pilots across Europe, preparing them for the challenges of the aviation world. #History #Aviation #Travel #Technology #BartoliniAir #AviationHistory #Airlines #AviationPioneers #Flying #PilotTraining #AirTravel #Innovation #FloridaHistory

It was great speaking to Jiří Marek about Air Serbia’s upcoming plans, including that long-awaited third A330-200, China growth, the national carrier’s growing Embraer fleet, and more… The interview is out now on ch-aviation (see link in the comment section). Also, a special thanks to Arsen Rudan.

Many are not aware that Air France's first few Aerospatiale-BAC Concorde aircraft were delivered in the airline's pre-1976 livery. Variations of this earlier color scheme had been used for decades by the French flag carrier. It was replaced by what could legitimately be called the very first "Euro-white" look. This is the design the company still uses, in slightly modified form, today. F-BTSC is seen here in the old livery, having been photographed in early 1976 at Paris-Charles de Gaulle Airport. Sadly is was -BTSC which became the first, and only, Concorde to be involved in a fatal crash (in the year 2000 on departure from this very airport). After a long grounding for safety modifications the Anglo-French supersonic transports were returned to service with Air France and British Airways in 2001. The type was then permanently grounded in 2003 due largely to continuing very low load factors during the worldwide air traffic downturn in the wake of the September 11, 2001 attacks on New York and Washington D.C. Interested in legendary Pan Am? Check out my new Tuesday and Friday posts for the Pan Am Historical Foundation at: https://lnkd.in/eJ_ES-RF. My latest post-link: Boeing 747-121 N748PA "Clipper Crest of the Wave" (originally "Hornet") at Chicago O'Hare Airport. Would you be willing to contribute to help me continue creating these free daily educational airline-history posts (over 1,350 since 2017, and counting)? If so please go to: https://lnkd.in/ebnx6r7U. Any size gift is much appreciated and can be anonymous if you prefer. #aviation #aviationhistory #aircraft #airplanes #airlines #airlinehistory #airlinesandairplanes #civilaviation #aerospatiale #britishaircraftcorporation #bac #concorde #airfrance #airfranceklm #charlesdegaulleairport #cdg (Please note there is no trade connection between The Commercial Aviation History Consultancy and the owner of the webpage, and associated image, to which this photo-link will take you.) Airliners.net link, Photo by Jean-François Denis

Read about the Larger Bins solutions and Light Up a Life project on Airbus' participation in the FIDAE Airshow, among other topics! Check it out here https://lnkd.in/diieeHV8

Why the Concorde Was Grounded for Good? The Concorde was a supersonic passenger jet developed in the 1960s by the UK and France, marking the first major cooperative aircraft design between European countries. Built by British Aerospace, Rolls-Royce, Aérospatiale, and SNECMA, it was completed in 1969. Only 14 Concorde aircraft went into service before being retired in 2003. This groundbreaking aircraft was notable for its speed and technological innovation. The Concorde was retired due to several factors: its noise and high operating costs limited flight availability and required prohibitively high fares. Financial losses led British Airways and Air France to primarily serve New York City. A 2000 crash, caused by engine failure, killed 113 people, accelerating its retirement. The combined impact of operational expenses, restricted routes, and the crash led to the Concorde's withdrawal from service in 2003. #Concorde #Aviation #AviationHistory

Virgin Australia CEO Jayne Hrdlicka steps down. In a surprise move, Jayne Hrdlicka, CEO of Virgin Australia, has announced her departure, signalling a leadership transition for the airline giant. Stay tuned as the aviation world speculates on her successor and reflects on Hrdlicka’s transformative tenure amidst the challenges of a post-COVID landscape. #aviation #avgeek #aviationlovers #australianaviation #aircraft #aviationgeek #instagramaviation #instaaviation #virginaustralia