Project Solution in Designing Communications and Routes for Fieldwork

This paper is focused on the application of descriptive geometry methods on the construction of several types of communications. Project solution in designing communications and routes for fieldwork is illustrated on examples. The examples are presented by figures and description of procedure. In the paper there is presented construction of horizontal, straight rising communication, horizontal curved communication, direct evenly ascending communication, direct disproportionately ascending communication and disproportionately ascending curved communication

Travelling Salesman Problem Applied to Black Sea Ports used by Czech Ocean Shipping Companies

Graph theory offers useful tools for solving problems in transportation. This article concerns the Travelling Salesman Problem. This classic transport problem is addressed in terms of Czech shipping companies and the ports on the Black Sea. Using mathematical software, a Hamiltonian cycle with the smallest sum of the weights of the edges along these ports is found and discussed. Algorithms based on graph theory are used to find the economically most advantageous path. The start and end of the route are located in Prague because Czech companies currently operating in maritime transport have headquarters located there

Applications of Gyroscopic Effect in Transportation

This article describes gyroscopes and their effects in various fields of everyday life. Gyroscopic effect is ability (tendency) of the rotating body to maintain a steady direction of its axis of rotation. The gyroscopes are rotating with respect to the axis of symmetry at high speed. Gyroscopic effect is related to all rotating mechanisms (wheels, gears, shafts, rotors, bicycles, motorcycles, children’s toys...). In some cases, we want to enhance the gyroscopic effect (for stabilization, energy accumulation). Stabilization effect is mainly used for two-wheeled vehicles. It can be also used on ships and boats, where big wheel is rotating and preventing the boat to overturn. Gyroscopic effects can help with energy accumulation. The bigger rotating speed is achieved the bigger amount of energy is stored. When the gyroscope is well designed the efficiency can be much higher than in the batteries. In other cases we want to suppress or compensate it (in case of the direction change of the rotating device). This is mainly about the planes. When the pilot of the plane needs to change the heading then during the left turn the plane will go up and during the right turn it goes down. The use of gyroscopes is important in various modes of transportation. We describe different usage of gyroscopes in transport and logistics, especially gyrocompass (ships and planes – advantages: no influence by ferromagnetic materials, heading to the true North, disadvantages: errors caused by rapid changes in course, speed and latitude); attitude and heading indicators (plane); pendulous integrating gyroscopic accelerometer (rocketry); gyrostat - control moment gyroscope (space – stations, satellites and probes); MEMS gyroscope (automotive, entertainment, robots, etc.)

Mercator’s Projection – a Breakthrough in Maritime Navigation

This paper is focused on Mercator’s projection as a breakthrough in maritime navigation. In the paper, the principle and properties of Mercator’s projection are described. The advantages, disadvantages and current utilization are mentioned

Navigation Course in Mathematical Examples – Utilization of the Spherical Geometry

The paper deals with applications of methods of spherical geometry in naval navigation. It summarises the essential knowledge of spherical geometry and presents some exercises and their solutions. These exercises can be applied in explanations of the basic principles of naval navigation

Infinitesimal Transformations of Locally Conformal Kähler Manifolds

The article is devoted to infinitesimal transformations. We have obtained that LCK-manifolds do not admit nontrivial innitesimal projective transformations. Then we study innitesimal conformal transformations of LCK-manifolds. We have found the expression for the Lie derivative of a Lee form. We have also obtained the system of partial differential equations for the transformations, and explored its integrability conditions. Hence we have got the necessary and sufcient conditions in order that the an LCK-manifold admits a group of conformal motions. We have also calculated the number of parameters which the group depends on. We have proved that a group of conformal motions admitted by an LCK-manifold is isomorphic to a homothetic group admitted by corresponding Kählerian metric. We also established that an isometric group of an LCK-manifold is isomorphic to some subgroup of the homothetic group of the coresponding local Kählerian metric

The Experience of the meaning of life as a part of the life experience of homeless people

The aim of this thesis is to analyze how homeless people include in their life experiences the experience of the meaning of life. Focus is placed on homelessness and significant aspects related to this phenomenon. Ethical dilemmas in the context of existentialism and existential psychology in accordance with the principles of learning V.E. Frankl. Knowledge from the field of social work is used. Questions of the meaning of life from the perspective of homeless people are presented. Experience from the specific work of one of the organizations dedicated to homeless people is presented. The research is focused on finding out how homeless people themselves experience and evaluate the experience the meaning of life. The experience of the meaning of life as part of the life experience of homeless people

Using Logotherapy to Help Parents of Mentally Disabled Children to Reorganize Their Ladder of Life Values

In my thesis, I characterise the basic terms from the sphere of mental disability and the diagnosis of autism. I try to outline the view of mentally disabled children and children with disorders of autistic spectrum from the moral and pedagogical point of view. Furthermore, I deal with the sense and the extent of the need of education. At the same time, I analyse the demands that the parents, teachers and social workers are exposed to. As this thesis deals with logotherapeutical values of parents of mentally disabled children and with disorders of autistic spectrum, I describe the meaning of values of creativity, experiences and attitudes in the life of a person and in the lives of parents of these children. In the general context, my thesis pays attention to logotherapy with the view of the possible resignation of parents to their life fate, which is connected with the difficult life situation. In my thesis, I used the qualitive research and the method of research survey mith the elements of qualitative analysis of data, as this method enables to work with the smaller research sets. The research was carried out among parents of mentally disabled children and children with the disorders of autistic spectrum. These parents are the members of the Association of Parents with Mentally Disabled Children or their children make use of the services of the school "Rolnička" which is run by the Diacony of the Czech-Brethern Evangelical Church. The aim of my thesis is to find out whether the ligotherapeutical values formed by V.E.Frankel occur in the system of values of parents of disabled children. Finally, there was carried out the evaluation of acquired data

The Regularization of the Second Order Lagrangians in Example

summary:This paper is devoted to geometric formulation of the regular (resp. strongly regular) Hamiltonian system. The notion of the regularization of the second order Lagrangians is presented. The regularization procedure is applied to concrete example

ON SECOND ORDER HAMILTONIAN SYSTEMS

The aim of the paper is to announce some recent results concerning Hamiltonian theory. The case of second order Euler–Lagrange form non-affine in the second derivatives is studied. Its related second order Hamiltonian systems and geometrical correspondence between solutions of Hamilton and Euler–Lagrange equations are found