Construction materials of a partly ruined Medieval church of Central Hungary were studied in details to assess its conditions and to obtain information on the phases of construction. At first, digital images were taken to create a 3D model of the remaining walls. The material properties were measured in situ using non-destructive test methods. Strength parameters of stone and render were assessed by Schmidt hammer, while moisture content was measured by a portable moisture meter. According to lithological descriptions and thin-section analyses limestone prevail in the monument. The most common Miocene limestone is represented by various lithologies, such as cemented macro porous limestone, fine-grained porous limestone, oolitic limestone and bioclastic limestone. Mesozoic micritic well cemented limestone and Tertiary limonitic sandstone were also identified at the ruins. The most common weathering forms are selective dissolution, multiple flaking and biological colonisation. Renders used in the structure represents the long history of the structure from Medieval lime-based mortars to Portland cement containing latest applications. The former one is composed of quartz send in lime binder. According to Schmidt hammer tests, the rebound values of the replacement stone is higher than that of the original porous limestone. There is a distinct difference in the moisture content of the stone and render. Orientation/exposure of the wall also influences the moisture content. The gathered information allows for designing better repair methods and helps in the planning of the maintenance of the medieval stone heritage.

This section shows technology changes in mobile communications field, like adaptive spectrum usage, 4G mobile services, new M-applications. A theoretic model is shown about the joining process of the value chain, and conflicts are shown on vertical integration in both directions. The staged rises of the mobile communications' level lead two main types of regulator activities. As a consequence in the near future there are some steps by the regulatory agency to be done.

<p>A particular use of quarry waste is presented in this study. The aggregate quarries produce high amounts of quarry waste, especially dust, that has been considered for many years as ’no need materials. One possible use of this dust is as aggregate in renders. Four Hungarian basaltic quarries provides a high amount of dust: Uzsa, Recsk, Egerbakta and Vidornyaszőlős. 15% of the mass waste of dust from these quarries were added to the renders. Both standard size (quarry fresh) and nano-grinded dust were tested. Test specimens were made from the dust added render, and physical properties were tested 28 days after casting. Bending strength tests, uniaxial compressive strength tests were made to assess the mechanical properties of the renders. Carbonate formation, porosity and pore-size distribution were also analyzed to obtain valuable information on the binding and textural characteristics. Reference samples without basalt dust were also cast, and the test results were compared in order to assess the performance of basalt dust containing renders. The basalt dust and nano dust containing samples have lower bending strength than the reference ones, while the uniaxial compéressivbe strength increased when basalt dust was added. Nano dust containing samples show an increased porosity but a decrease in mean pore diameters. Our results show that adding basalt dust to renders could be a useful solution in the reduction of quarry waste and the obtained render has fairly good mechanical properties.</p>

This article is about next generation knowledge management technologies. The original approach was to externalize the tacit knowledge of human beings. Store the externalized content, mainly text or data based documents, later multimedia contents. Handle these documents in different data bases, together with their metadata. The new associative data models will be able to handle the stored content units without knowing the internal structure of the data base. Search functions can also step closer to the human way of recalling our existing, previously internalised knowledge from our brain. In this paper the scope and goals of association management are discussed as a new feature in knowledge management systems.I.