CONTROLLING RISK DUE TO NOISE ON FERRY BOAT

Environmental and occupational noise is common nuisance that affects the health of employees. Performed health checks of employees engaged by Company “Pomorski Saobraćaj” showed that 5% of examined sailors had hearing loss. The results were a trigger for starting experiment on noise risk assessment with objective to discover possibilities of noise pollution presence, precise significant noise sources and describe solutions for eliminating negative effects. Several measurements on five positions were performed on ferry boat “KAMENARI”, according to EC Physical Agents Directive and Merchant Shipping and Fishing Vessels Regulations 2007. Noise on selected positions exceeded the limit for about 1-5dB. Noise exposure level was 84.5dB. Diesel engine, exhaust system and structural noise were main sources of excessive noise. Experiment shows noise presence as nuisance that affects sailors. Noise presents a serious threat for sailor’s health. It interferes with crew communication and jeopardizes navigation safety. Technical measures, crew health checks and noise monitoring could prevent all negative effects. </p

A Comparative Study of Patent Infringement Remedies Related to Non-Practicing Entities in the Courts of Canada, the United Kingdom, and the United States

This work examines the scope of non-practicing entity behavior and whether the debate on remedies can lead to changes that encourage the goals behind a patent system. Innovation is often the stated goal but the significance of innovation commercialization is often ignored. Furthermore, there has been an increase in business models that involve alternate means of monetizing patents, not all of which were contemplated in the purpose of the patent system. Using the goals of the patent system as a backdrop, this work provides an overview of the impact of remedies available to courts in Canada, the United Kingdom, and the United States on patent systems. The courts have the tools in each jurisdiction to grant remedies appropriate to the infringement. However, systemic limitations in each patent system often prevent the courts from reviewing disputes

A Comparative Study of Patent Infringement Remedies Related to Non-Practicing Entities in the Courts of Canada, the United Kingdom, and the United States

This work examines the scope of non-practicing entity behavior and whether the debate on remedies can lead to changes that encourage the goals behind a patent system. Innovation is often the stated goal but the significance of innovation commercialization is often ignored. Furthermore, there has been an increase in business models that involve alternate means of monetizing patents, not all of which were contemplated in the purpose of the patent system. Using the goals of the patent system as a backdrop, this work provides an overview of the impact of remedies available to courts in Canada, the United Kingdom, and the United States on patent systems. The courts have the tools in each jurisdiction to grant remedies appropriate to the infringement. However, systemic limitations in each patent system often prevent the courts from reviewing disputes

Multi-channel system for remote power quality monitoring of electricity supplied by public distribution networks

Peer Reviewe

Bulk and interface quantum states of electrons in multi-layer heterostructures with topological materials.

In this article we describe the bulk and interface quantum states of electrons in multi-layer heterostructures in one dimension, consisting of topological insulators (TIs) and topologically trivial materials. We use and extend an effective four-band continuum Hamiltonian by introducing position dependence to the eight material parameters of the Hamiltonian. We are able to demonstrate complete conduction-valence band mixing in the interface states. We find evidence for topological features of bulk states of multi-layer TI heterostructures, as well as demonstrating both complete and incomplete conduction-valence band inversion at different bulk state energies. We show that the linear k z terms in the low-energy Hamiltonian, arising from overlap of p z orbitals between different atomic layers in the case of chalcogenides, control the amount of tunneling from TIs to trivial insulators. Finally, we show that the same linear k z terms in the low-energy Hamiltonian affect the material's ability to form the localised interface state, and we demonstrate that due to this effect the spin and probability density localisation in a thin film of Sb2Te3 is incomplete. We show that changing the parameter that controls the magnitude of the overlap of p z orbitals affects the transport characteristics of the topologically conducting states, with incomplete topological state localisation resulting in increased backscattering

Modeling of thermoelectric module operation in inhomogeneous transient temperature field using finite element method

This paper is the result of research and operation modeling of the new systems for cooling of cutting tools based on thermoelectric module. A copper inlay with thermoelectric module on the back side was added to a standard turning tool for metal processing. For modeling and simulating the operation of thermoelectric module, finite element method was used as a method for successful solving the problems of inhomogeneous transient temperature field on the cutting tip of lathe knives. Developed mathematical model is implemented in the software package PAK-T through which numerical results are obtained. Experimental research was done in different conditions of thermoelectric module operation. Cooling of the hot module side was done by a heat exchanger based on fluid using automatic temperature regulator. After the calculation is done, numerical results are in good agreement with experimental. It can be concluded that developed mathe-matical model can be used successfully for modeling of cooling of cutting tools

Non-linear transient heat conduction analysis of insulation wall of tank for transportation of liquid aluminum

This paper deals with transient non-linear heat conduction through the insulation wall of the tank for transportation of liquid aluminum. Tanks designed for this purpose must satisfy certain requirements regarding temperature of loading and unloading, duringtransport. Basic theoretical equations are presented, which describe the problem of heat conduction finite element analysis, starting from the differential equation of energy balance, taking into account the initial and boundary conditions of the problem. General 3-D problem for heat conduction is considered, from which solutions for two- and one-dimensional heat conduction can be obtained, as special cases. Forming of the finite element matrices using Galerkin method is briefly described. The procedure for solving equations of energy balance is discussed, by methods of resolving iterative processes of non-linear transient heat conduction. Solution of this problem illustrates possibilities of PAK-T software package, such as materials properties, given as tabular data, or analytical functions. Software alsooffers the possibility to solve non-linear and transient problems with incremental methods. Obtained results for different thicknesses of the tank wall insulation materials enable its comparison in regards to given conditions