Sofia. 2 March 2026 // Modern chess has its origins in ancient times. The homeland of chess is considered to be India, as well as Persia and China. Through the Arabs and Spain, the game gradually entered Europe. In the 15th century, chess began to assume its modern form. France became one of the main […]
B9: Chess – Science, Art or Sport Read More »
Sofia. 4 Jan 2025 // One of the research tasks is to scientifically explain the reasons that lead to asymmetry in living matter. This asymmetry represents an approximate symmetry. I call it real symmetry. I suppose the DNA molecule is not ideally symmetrical. But why? This is the question that new research should be based
B8: What is Symmetry? Read More »
Sofia. 7 Sept 2017 // I answer this interesting question by formulating the following four axioms: A. Proving material symmetry in the material world with ideal means is impossible and meaningless. Proving the ideal symmetry in the ideal world with material means is impossible and meaningless. B. In living and dead matter, ideal (absolute, perfect)
B7: What is Symmetry? Read More »
Sofia, 29 May 2022 // Usually, dreams are a reflection of some past actions. The probability of dreaming of an event and its realization in the near future is minimal. Most often, dreams are extremely inadequate and have no logic. They are so decorated that if we think about them later, we will see that
B6: Do you think dreams and real-life events are connected? Read More »
Sofia, 12 Jun 2022 // As I said before, life without difficulties and without the struggle to overcome them is not only monotonous but meaningless. Yes, in the course of his life, everyone faces some problems. And one immediately asks the following question. Am I wrong? I think there is no unambiguous answer. If a
B5: Why do problems exist? Read More »
Sofia, 11 Jun 2022 // Many great and ingenious tennis players have gone “the wrong way”. We know how Bjorn Borg went bankrupt. We also know about the law cases led by Boris Becker. No one is insured against mistakes in life. In the sports field, a person may be a super-champion, but in real
B4: Why do problems exist? Read More »
Sofia, 6 Jun 2022 // Can you imagine a world without problems? Such a world does not exist. From birth to death, everyone must constantly struggle with some problems in order to exist. In the animal world, it is the same, even more expressive. Life without problems is too boring. Many children of wealthy parents
B3: Why do problems exist? Read More »
Sofia, 8 Feb 2026 // Bette Davis: “You will never be happier than you expect. To change your happiness, change your expectation.”
B2: What is the secret of happiness? Read More »
Sofia, 6 Oct 2025 // Happiness is a feeling that is the exact opposite of unhappiness. Happiness “goes” along with unhappiness and from time to time exchanges positions with it.
B1: What is the secret of happiness? Read More »
ABSTRACT: Studying nonlinear oscillations in mechanical systems is fundamental to understanding complex dynamic behavior in engineering applications. While classical analytical methods remain valuable for systems with limited complexity, they become increasingly inadequate whennonlinearities are strong and geometrically induced, as in the case of large-amplitude oscillations. This paper presents a combined numerical and experimental investigation of
ABSTRACT: Recently, high-speed elevators have been increasingly installed in high-rise buildings and skyscrapers. In them, the car moves at a set speed of at least three meters per second on extremely straight rails to minimize transverse vibrations, which are extremely small. A high-speed elevator consisting of a cabin, a counterweight, and a machine unit, located
CP17: High-speed Elevator Model Read More »
ABSTRACT: Modern advances in microtechnology have facilitated the development of compact, cost-effective, integrated accelerometers and gyroscopes that are suitable for investigating the motion of various structures, mechanisms, and machines. This paper presents an experimental setup for recording large oscillations of a two-degree-of-freedom spring system. Two 3D accelerometers and 3D gyroscope modules, a low-cost microcontroller, and
ABSTRACT: This article examines one of the most important strokes in tennis sport, namely, service strokes. The study covers three types of strokes: flat, slice, and kick service strokes. A specially made program has been compiled in the area of MatLab, with the help of which the strongly nonlinear differential equations are integrated. These equations
A27: Study the Service Strokes in Professional Tennis Read More »
ABSTRACT: The article considers the impact interaction of a railway vehicle with a fixed barrier. The movement of the vehicle is carried out at different velocities. A dynamic model of a buffer is offered, which includes an elastic element, a damper, and a friction mechanism. The elastic element has a nonlinear characteristic. The damper is
A26: Impact Interaction of a Railway Vehicle with a Fixed Barrier Read More »
ABSTRACT: Bipolar Plates (BPPs) are the most crucial component of the Polymer Electrolyte Membrane (PEM) fuel cell system. To improve fuel cell stack performance and lifetime, corrosion resistance and Interfacial Contact Resistance (ICR) enhancement are two essential factors for metallic BPPs. One of the most effective methods to achieve this purpose is adding a thin
