74 research outputs found
DOCUMENT MANAGEMENT IN CONTEXT OF COLLABORATIVE SYSTEMS
In this paper we will present the implementation aspects of a document management application, meant to administrate different types of formats. We propose an application which provides full functionality for accessing information, taking into account the security aspects of documents, and quick access to data. The application offers the possibility to track changes, manage data, save information, as well as document management functionalities. Our purpose is to create a suitable, easy-to-use application which, if used, will guarantee efficiency in an organization.document management
Documentation and Evaluation of the Conditions of the 9th Century B.C.E. Mosaic, from Gordion, Turkey and Recommendations for its Conservation and Treatment
The purpose of this report was to begin to consider options for how to improve the state of preservation and conservation of the Megaron 2 Mosaic. Archival documentation was gathered and a preliminary conditions assessment was performed. Research was conducted to find comparable projects that could establish a framework to help create a conservation plan for the mosaic. Finally, a phased program was created to guide the planning process. This information has been compiled in this thesis in order to establish a solid base on which future work can be built
E-COLLABORATION. THE NEW ECHONOMIC WORLD
In this paper we will present what e-collaboration means and how can this concept revolutionize the XXI-th century economy. Our analysis leads to a conclusion that the future of business will be based on technological backgrounds. Breaking time and space frontiers will be the key of success in a hard competitive business environment. In our opinion this goals will be achieved by the implementation of groupware. However, our study shows that this field still needs a lot of normalization as concept of e-collaboration still has no standard approaches and many theoreticians still confuse collaboration with the classical âthree câ terms.economy
THE EARLY PHRYGIAN GATE AT GORDION, TURKEY: AN INVESTIGATION OF DRY STONE MASONRY IN SEISMIC REGIONS AND RECOMMENDATIONS FOR STABILIZATION
The archaeological site at Gordion, Turkey is located in a region of high seismic activity, which threatens the standing masonry structuresâparticularly the dry laid limestone wallsâof the ancient Phrygian capital. First excavated in the 1950s, the citadel gate is composed of an ashlar limestone veneer encasing a rubble core. Although the gate has been the focus of several conservation efforts, the unreinforced masonry structure requires study and possible stabilization to mitigate and prevent further bulging or even collapse. The gateâs current conditions include extensive cracking, spalls, split faces, missing chinking stones, open joints and bulges, which partially result from the complex history of the site. Constructed around 900 BC, the Early Phrygian Gate only briefly served as the main entryway to the citadel; it was then affected by fire and burial and used as a foundational support for later structures. Partial excavation has largely exposed the North and South Courts of the gate complex. However, several courses of the later building stone remain in localized areas of the gate walls, and the interior of South Court still contains the almost 3,000 year old clay construction fill. These factors have contributed to displacement of the multiple leaf system by exerting lateral force and causing compression and shear cracks. This thesis synthesizes existing knowledge of the behavior of masonry during seismic events, properties of dry stone structures and site-specific characteristics as a basis for constructing recommendations for future monitoring and stabilization efforts
Revisiting Gordion\u27s Pebble Mosaic Pavement: Evaluating Re-Backing Techniques and Investigating Alkali-Silica Reaction
The 9th c. B.C.E. Megaron 2 pebble mosaic from Gordion is the oldest known mosaic pavement to date. Discovered in 1956, it was subsequently cut into 33 individual panels, lifted, and stored outdoors for two decades before reinstallation under a sheltered, sub-grade, outdoor exhibit at the Gordion Museum. Recent research into its conservation history and current condition in preparation for re-interpretation and display has revealed the potential for further deterioration through alkali-silica reaction between the siliceous pebbles and the cementitious backing. Moreover, the enigmatic geometric designs are now difficult to read due to the loss of pebbles, misalignment of the panels, fragmentation by lacunae and gaps between the panels, rebar cracking, and cementitious over-grout. These conditions have created a critical situation that must be remedied to preserve this historically significant mosaic and make it more readily available for interpretation and exhibition.
This paper assesses materials and techniques for re-backing the mosaic and investigates the potential for alkali-silica reaction. This includes empirical tests on replica mosaic panels for the removal of the reinforced concrete and cementitious over-grout, the evaluation of critical properties related to the facing and re-backing materials, and petrographic analysis for the detection of evidence of alkali-silica reaction. The analysis, testing, and proposed treatments for this significant archaeological pavement is presented in light of contemporary conservation approaches for ancient tessellated pavements and explores the limits to current knowledge and practice when applied to a natural pebble mosaics
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Concurrency Control in Advanced Database Applications
Concurrency control has been thoroughly studied in the context of traditional database applications such as banking and airline reservations systems. There are relatively few studies, however, that address the concurrency control issues of advanced database applications such as CAD/CAM and software development environments. The concurrency control requirements in such applications are different from those in conventional database applications; in particular, there is a need to support non-serializable cooperation among users whose transactions are long-lived and interactive, and to integrate concurrency control mechanisms with version and configuration control. This paper outlines the characteristics of data and operations in some advanced database applications, discusses their concurrency control requirements, and surveys the mechanisms proposed to address these requirements
Recommended from our members
Concurrency Control in Advanced Database Applications
Concurrency control has been thoroughly studied in the context of traditional database applications such as banking and airline reservations systems. There are relatively few studies, however, that address the concurrency control issues of advanced database applications such as CAD/CAM and software development environments. The concurrency control requirements in such applications are different from those in conventional database applications; in particular, there is a need to support non-serializable cooperation among users whose transactions are long-lived and interactive, and to integrate concurrency control mechanisms with version and configuration control. This paper outlines the characteristics of data and operations in some advanced database applications, discusses their concurrency control requirements, and surveys the mechanisms proposed to address these requirements
Into the Crucible. Methodological approaches to reconstructing crucible metallurgy, from New Kingdom Egypt to Late Roman Thrace
The subject of this PhD thesis is the study of ancient metallurgical crucible assemblages, with a particular focus on the methodological framework for such studies. This is approached through three case studies from the eastern Mediterranean: Qantir â Pi-Ramesse (Ramesside Egypt, 13th century BC), Gordion (Late Phrygian/Achaemenid Anatolia, 6th-4th century BC) and Nicopolis/Philippopolis/Serdica/Stara Zagora (Roman Thrace, 2nd-5th century AD). For each of these three case studies, the metallurgical activities are reconstructed and contextualised. This involves determining the technical processes, material use and organisation of metal production both on the site and regional scale. No relation exists between these sites and each case study stands on its own: results from the technological reconstruction are interpreted within their particular archaeological and regional/historical context, to which they offer novel contributions. The main research material consists of crucible remains, and to a lesser extent metal remains, which are investigated using optical microscopy and SEM(-EDS) to establish the technological processes and material use. The applicability of handheld XRF for such reconstructions is evaluated as well. Finally, lead isotope analysis (using MC-ICP-MS) of metal remains (scrap, spills, ingots, objects and prills extracted from crucible slag) and crucible ceramic and slag is performed. The overarching goal of this research is to evaluate methodological approaches to the study of crucibles and crucible assemblages by comparing the results for these three examples, not in terms of technology, but by evaluating the influence of varying crucible typology, preservation, abundance, contextual information, and sample availability, as well as the use of various analytical techniques. These considerations are then combined to formulate more general recommendations for the sampling, examination and interpretation of ancient crucible assemblages
Storage management and indexing in object-oriented database management systems
Ankara : The Department of Computer Engineering and Information Sciences and the Institute of Engineering and Sciences of Bilkent Univ., 1990.Thesis (Master's) -- Bilkent University, 1990.Includes bibliographical references leaves 76-77Storage management and indexing methods used in existing conventional database management systems are not appropriate for the object-oriented database management systems due to the distinctive features of the later systems. A model for storage management suitable for object- oriented database management systems is proposed in this thesis. It supports object identity, multiple inheritance, composite objects, a fine degree of granularity and schema evolution.
An index provides fast access to data stored in files at the price of using additional storage space and an overhead in update operations. Work has been carried out on indexing and an indexing method for the object-oriented database systems is proposed. Identity and equality indexes are treated. Object identity and information hiding are provided. Schema changes are handled without affecting existing indexes. It is general enough to be applicable to most existing object-oriented database systems. The mapping of the proposed storage and indexing approaches into a relational database scheme is also presented.Al-Hajj, RedaM.S
Evaluation of Cementitious Injection Grouts for the Stabilization of Holly Tower Support Rock, Hovenweep National Monument
This thesis addresses the testing and evaluation of the use of a cementitious injection grout for the reattachment of detached slabbing on the sandstone support rock of Holly Tower at Hovenweep National Monument. This research follows on a previous condition assessment and diagnosis of the deterioration of the sandstone support rock and the effects of consolidation on the rock as the first step in a multi-phase conservation program.
The extreme instability of the slabbing on the west side of the support rock requires remedial intervention that will retain and reattach the slab to the parent rock. Injection grouting was identified as a viable option for reattachment, requiring the development of an intensive testing regimen to determine the physical and mechanical properties of a commercial cementitious grout
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