Deng, Hongbo. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 156-175). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract also in Chinese.

Information can be considered a company’s most valued asset and should be protected as such. In the past, companies allowed very limited access to corporate information. Today, the rapid growth of the Internet increases the importance of connecting to existing databases. Access to such web-enabled databases, containing sensitive information such as credit card numbers must be made available only to those who need it. The security of web-enabled databases is challenged, as huge user populations access corporate information, past traditional perimeters. Providing a secure web-enabled database environment is not as simple as creating a few dynamic pages linked to a secured database. As a web-enabled database is very sophisticated, consisting of various applications in front of the database, it is vulnerable to attack. Furthermore, since most malicious intrusions occur from inside, defences such as firewalls, intrusion detection and virus scanning provide limited protection. The principle aim of this study was to consider security services and mechanisms that would provide protection to web-enabled databases. As database security has been a well-researched topic ever since the first databases were used, it was decided to investigate whether traditional database security could possibly provide a basic framework to be used when approaching the security of web-enabled databases. An investigation was made into nine current state database security services and their associated mechanisms. Additional services and mechanisms were identified, that could provide protection in the new environment. The integrated service provided by web-enabled databases was contrasted to the service provided by current state database security. A model was developed that illustrated how these services and mechanisms could be applied to create a secure web-enabled database. The study was brought to an end with a conclusion on the security that can be attained by web-enabled databases. Further problem areas, which could be researched in the future, were touched upon briefly. / Prof. J.H.P. Eloff

Thesis (M.Sc.) - Carleton University, 2007. / Includes bibliographical references (p. 119-130). Also available in electronic format on the Internet.

Analysis of problems during designing web database and their structure for requirement of manufacturer of PCBs. Study of using applications intended for creation, administration and protection of database system. Systems for operation of web server. Principles of projection tabels in databases. Design of database's structure for production system of PCBs.

In recent years, there has been a flood of continuously changing information from a variety of web resources such as web databases, web sites, web services and programs. Online Social Networks (OSNs) represent such a field where huge amounts of information are being posted online over time. Due to the nature of OSNs, which offer a productive source for qualitative and quantitative personal information, researchers from various disciplines contribute to developing methods for extracting data from OSNs. However, there is limited research which addresses extracting data automatically. To the best of the author's knowledge, there is no research which focuses on tracking the real time changes of information retrieved from OSN profiles over time and this motivated the present work. This thesis presents different approaches for automated Data Extraction (DE) from OSN: crawler, parser, Multi Agent System (MAS) and Application Programming Interface (API). Initially, a parser was implemented as a centralized system to traverse the OSN graph and extract the profile's attributes and list of friends from Myspace, the top OSN at that time, by parsing the Myspace profiles and extracting the relevant tokens from the parsed HTML source files. A Breadth First Search (BFS) algorithm was used to travel across the generated OSN friendship graph in order to select the next profile for parsing. The approach was implemented and tested on two types of friends: top friends and all friends. In case of top friends, 500 seed profiles have been visited; 298 public profiles were parsed to get 2197 top friends' profiles and 2747 friendship edges, while in case of all friends, 250 public profiles have been parsed to extract 10,196 friends' profiles and 17,223 friendship edges. This approach has two main limitations. The system is designed as a centralized system that controlled and retrieved information of each user's profile just once. This means that the extraction process will stop if the system fails to process one of the profiles; either the seed profile (first profile to be crawled) or its friends. To overcome this problem, an Online Social Network Retrieval System (OSNRS) is proposed to decentralize the DE process from OSN through using MAS. The novelty of OSNRS is its ability to monitor profiles continuously over time. The second challenge is that the parser had to be modified to cope with changes in the profiles' structure. To overcome this problem, the proposed OSNRS is improved through use of an API tool to enable OSNRS agents to obtain the required fields of an OSN profile despite modifications in the representation of the profile's source web pages. The experimental work shows that using API and MAS simplifies and speeds up the process of tracking a profile's history. It also helps security personnel, parents, guardians, social workers and marketers in understanding the dynamic behaviour of OSN users. This thesis proposes solutions for web database processing on data extraction from OSNs by the use of parser and MAS and discusses the limitations and improvements.

In recent years, there has been a ood of continuously changing information from a variety of web resources such as web databases, web sites, web services and programs. Online Social Networks (OSNs) represent such a eld where huge amounts of information are being posted online over time. Due to the nature of OSNs, which o er a productive source for qualitative and quantitative personal information, researchers from various disciplines contribute to developing methods for extracting data from OSNs. However, there is limited research which addresses extracting data automatically. To the best of the author's knowledge, there is no research which focuses on tracking the real time changes of information retrieved from OSN pro les over time and this motivated the present work. This thesis presents di erent approaches for automated Data Extraction (DE) from OSN: crawler, parser, Multi Agent System (MAS) and Application Programming Interface (API). Initially, a parser was implemented as a centralized system to traverse the OSN graph and extract the pro- le's attributes and list of friends from Myspace, the top OSN at that time, by parsing the Myspace pro les and extracting the relevant tokens from the parsed HTML source les. A Breadth First Search (BFS) algorithm was used to travel across the generated OSN friendship graph in order to select the next pro le for parsing. The approach was implemented and tested on two types of friends: top friends and all friends. In case of top friends, 500 seed pro les have been visited; 298 public pro les were parsed to get 2197 top friends pro les and 2747 friendship edges, while in case of all friends, 250 public pro les have been parsed to extract 10,196 friends' pro les and 17,223 friendship edges. This approach has two main limitations. The system is designed as a centralized system that controlled and retrieved information of each user's pro le just once. This means that the extraction process will stop if the system fails to process one of the pro les; either the seed pro le ( rst pro le to be crawled) or its friends. To overcome this problem, an Online Social Network Retrieval System (OSNRS) is proposed to decentralize the DE process from OSN through using MAS. The novelty of OSNRS is its ability to monitor pro les continuously over time. The second challenge is that the parser had to be modi ed to cope with changes in the pro les' structure. To overcome this problem, the proposed OSNRS is improved through use of an API tool to enable OSNRS agents to obtain the required elds of an OSN pro le despite modi cations in the representation of the pro le's source web pages. The experimental work shows that using API and MAS simpli es and speeds up the process of tracking a pro le's history. It also helps security personnel, parents, guardians, social workers and marketers in understanding the dynamic behaviour of OSN users. This thesis proposes solutions for web database processing on data extraction from OSNs by the use of parser and MAS and discusses the limitations and improvements. / Taibah University

Am 15. Juli 2000 ist der Fotograf Christian Borchert im Alter von 58 Jahren in einem See wenige Kilometer nördlich von Berlin ertrunken. So plötzlich und grausam er aus dem Leben gerissen wurde, so sorgfältig und umsichtig wurde nach seinem Tod sein Nachlass gesichert. Vor allem der Verleger und Fotograf Hansgert Lambers, Borcherts enger Freund und Vertrauter, hat sich hier verdient gemacht, indem er die Aufteilung des Nachlasses auf verschiedene Archive und Sammlungen geschickt koordiniert hat. Im Zusammenspiel mit Ulrich Domröse von der Berlinischen Galerie, Hans-Ulrich Lehmann vom Dresdner Kupferstich-Kabinett sowie vor allem Wolfgang Hesse, dem damaligen Leiter der Deutschen Fotothek Dresden, fanden Borcherts umfangreiche fotografische Hinterlassenschaften in den Monaten nach seinem Tod den Weg in Institutionen, die sich in angemessener Weise um den ihnen jeweils anvertrauten Nachlassanteil zu kümmern vermochten. Die Berlinische Galerie erhielt mit rund 4.000 Ausstellungsabzügen und Druckvorlagen zunächst jene Bilder, die nach landläufigem Verständnis Borcherts künstlerisches Vermächtnis ausmachen: darunter zahlreiche hochwertige Abzüge mit den Blattmaßen 30 x 40 cm – seit den 1980er Jahren Borcherts bevorzugtes Ausstellungsformat. Aus diesem Fundus hat sodann das Dresdner Kupferstich-Kabinett rund 900 Abzüge erworben, bei denen es sich teils um Arbeiten mit spezifischem Dresden-Bezug und teils um Dubletten handelt. Weitere Dubletten wurden von der Berlinischen Galerie auch an die Fotografische Sammlung des Kunstmuseums Moritzburg Halle/Saale abgegeben. [Aus der Einleitung.]

Sprechen wir vom Archäologischen Archiv Sachsen (AAS), meinen wir damit die ungeheure, derzeit rund 22,5 Millionen (Stand: 31.12.2018) Objekte umfassende Sammlung vor- und frühgeschichtlicher Altertümer des Landesamtes für Archäologie Sachsen (LfA Sachsen). Dabei hat auch diese Sammlung einst klein angefangen. Den Grundstock legte 1802 der Großenhainer Rentamtmann Karl Benjamin Preusker (1786–1871), der Begründer der sächsischen Ur- und Frühgeschichtsforschung, in Form einer Privatsammlung. Sie fand 1853 Aufnahme in das Königliche Antikenkabinett, das bereits 1786 im Japanischen Palais eingerichtet worden war. Nachdem der Direktor des Königlich Mineralogischen Museums, Hanns Bruno Geinitz, 1874 eine Prähistorische Abteilung an seinem Hause gründen konnte und 1879 Johannes Deichmüller mit der Leitung dieser Sammlung beauftragt wurde, konnten alle prähistorischen Bestände der seinerzeitigen Königlichen Sammlungen in die Obhut des nunmehr (seit 1877) Königlich Mineralogisch-Geologischen Museums übernommen werden. [Aus der Einleitung.]

This diploma thesis covers a solution of designing the information system for HNS mechanix ltd. This company provides auditorial services of optical products. During the desining not only the requirements of functionality and attributes of the system itself but also implementation and developing tools are necessary to be followed. The system is required to be available as WWW service with multilevel user access.

Der Band enthält die Beiträge der Tagung „Die Masse macht's? Erschließungsmethoden und Erkenntnismöglichkeiten bei der Arbeit mit Massenbeständen“ im Stadtmuseum Dresden am 16. November 2018. Auf Einladung der Veranstalter (Stadtmuseum Dresden, Kustodie der Technischen Universität Dresden, Sächsische Landesstelle für Museumswesen an den Staatlichen Kunstsammlungen Dresden) stellen Fachleute unterschiedlicher Disziplinen Probleme und Lösungen bei der Erschließung, Erforschung und Publikation von kultur-, natur- und wissenschaftshistorischen Massensammlungen zur Diskussion. Dabei ist der Blick über die realen Sammlungen hinaus auf virtuelle Verbundsysteme und digitale Publikationen erweitert worden. / The volume contains the contributions of the conference “Do the masses make it? Development methods and knowledge possibilities when working with mass collections” in City Museum Dresden on 16 November 2018. At the invitation of the organizers (City Museum Dresden, Academic Heritage of Technical University Dresden, Saxon State Office for Museum Affairs on the Dresden State Art Collections), experts from various disciplines provide problems and solutions on the development, research and publication of mass collections of cultural, natural and scientific history that will be up for discussion. The view has been extended beyond the real collections to virtual network systems and digital publications.