INTERRELATIONS BETWEEN MANDIBULAR PARAMETERS, AGE AND CARCASS IN FEMALE FALLOW DEER (DAMA DAMA)

The study material included 152 mandibles of female fallow deer aged 3 to 12. Each mandible was characterized by 15 measurements. Based on the Principal Components Analysis it was concluded that the size and dimensional constitution of the mandible change with age. The following parameters are subjected to most significant changes: total length, middle height of the ramus. Additionally, the method indicated that there is a moderate interdependency between the mandibular parameters and an eviscerated carcass mass. Pearson’s correlation coefficient allowed for determining moderate correlations between the carcass mass, mandible total length, breadth of the third molar and middle height of the ramus

Notification Methods in Wireless Systems

Recently, there has been an increasing need for secure, efficient, and simplenotification methods for wireless systems. Such systems are meant to provideusers with precise tools best suited for work or leisure environments, and a lotof effort has been put into creating a multitude of applications. At the sametime, however, not much research has been made into determining which of theavailable protocols are best suited for each individual task. A number of basicnotification methods are presented here, and tests have been performed for themost-promising ones. An attempt has been made to determine which of themethods have the best throughput, latency, security, and other characteristics.A comprehensive comparison is provided, which can be used to select the rightmethod for each individual project. Finally, conclusions are provided, and theresults from all of the tests conducted are discussed

Advisory system assisting the work of a specialist

projekt inżyniersk

Modeling of Electrified Transportation Systems Featuring Multiple Vehicles and Complex Power Supply Layout

The paper proposes a novel approach to modeling electrified transportation systems. The proposed solution reflects the mechanical dynamics of vehicles as well as the distribution and losses of electric supply. Moreover, energy conversion losses between the mechanical and electrical subsystems and their bilateral influences are included. Such a complete model makes it possible to replicate, e.g., the impact of voltage drops on vehicle acceleration or the necessity of partial disposal of regenerative braking energy due to temporary lack of power transmission capability. The modeling methodology uses a flexible twin data-bus structure, which poses no limitation on the number of vehicles and enables modeling complex traction power supply structures. The proposed solution is suitable for various electrified transportation systems including suburban and urban systems. The modeling methodology is applicable i.a. to Matlab/Simulink, which makes it broadly available and customizable, and provides short computation time. The applicability and accuracy of the method were verified by comparing simulation and measurement results on an exemplary trolleybus system operating in Pilsen, Czech Republic. Simulation of daily operation of an area including four supply sections and maximal simultaneous number of nine vehicles showed a good conformance with the measured data, with the difference in the total consumed energy not exceeding 5%