Cranes are often the most conspicuous machines on a construction site. This is due to their large size, in addition to the important role they have in transporting heavy payloads vertically and horizontally. There are two major families of construction cranes: tower cranes and mobile cranes. Mobile cranes that are mounted on tracks are a subgroup referred to as ``crawler cranes''. Crawler cranes are widely used on construction sites, and are a backbone of the United States construction industry, thus a detailed study of these cranes' behavior is essential. This research studies the tip-over stability of crawler cranes in heavy-lifting applications. Two major applications are discussed: crawler cranes using movable counterweights and crawler cranes in tandem lifting.

The aim of this master thesis was to gather and analyze the real-world XQuery programs. The data gathering process is performed using the crawler. The thesis contains analysis of different crawlers and the most suitable crawler was chosen. The crawler was modified, so that it did not overload servers, gathered the right data and was able to pause. Before the data gathering we analyzed where to start gathering and how long should it took. When the data was gathered, they needed to be cleaned and validated. The subjects of the analyses were use of the XQuery language and occurrences of XQuery grammar symbols. Combination of the XML representation of XQuery programs and XPath expressions for querying this representation was used to perform these analyses. XQConveror was used to create this XML representation. The main contributions of this thesis are the gathered data and the first real-world XQuery programs analysis.

The aim of this thesis was to gather and analyze the real-world XQuery programs. The data gathering process is usually performed using the crawler. Part of the thesis was to analyze different crawlers and to choose the most suitable one. The crawler was then modified, so it would not overload servers, gather the right data and be able to pause. Before main gathering two problems had to be solved - where to start the gathering and how long it will take. After the data were gathered, they were cleaned, corrected and validated. The subject of the analysis was usage of the XQuery language and its grammar symbols. We also analyzed the XML documents used by XQuery programs and outputs from the XQuery programs. The main contribution of this thesis is the amount of the gathered data (in comparison with other sources), as well as gathering XML documents which are being queried, using Analyzer for analyzing the real-world XQuery programs and running this real-world XQuery programs over gathered XML documents.

Ingeniero Civil en Computación / Hoy en día, la automatización de procesos manuales permite en las empresas logran optimizar su tiempo para poder utilizarlo en otros recursos. A continuación se presenta la finalización de la construcción de un sistema capaz de dar apoyo en este sentido a la parte medioambiental de una empresa, específicamente en todos los procesos que son necesarios realizar para un correcto levantamiento de información de flora. Chile posee una amplia variedad de especies de flora registradas hasta la fecha, conocer todos sus nombres y modificaciones de los mismos es prácticamente imposible además de recordar cuales de ellas están en categoría de conservación, lo que es de vital importancia para un informe de flora. Para poder suplir esto, los especialistas llevan consigo libros con información de las especies existentes a terreno junto con un dispositivo GPS para ubicarse y un cuaderno para tomar notas de las especies observadas. Luego del proceso de toma de datos, los expertos deben generar listados con todas las especies vistas y verificar una por una cuales están en alguna categoría de conservación para agregar los datos correspondientes, además de comprobar que el nombre que se tiene de la especie es el último aceptado hasta la fecha del informe a entregar. Mientras tanto, por otro lado se tiene a una persona que está constantemente consultando por los avances llevados a cabo en cortos periodos de tiempo. Para solucionar lo anterior, se creó una herramienta computacional que permite la actualización de las especies de flora, almacenamiento de información de observaciones y generación de informes florísticos de manera automática por mencionar algunas funcionalidades que ayudan a los cuatro tipos de usuario: Administrador, Coordinador, Colector y Fiscalizador. Esta memoria describe el desarrollo de esta herramienta, la cual consiste en una aplicación móvil para Android junto con un sistema web de administración de datos. En este sistema se incorporaron dos extractores de información o crawlers que mensualmente recolectan los datos de la especies de flora presentes en Chile y también extraen la información correspondiente a todas las especies que están en alguna categoría de conservación vigente en el país. Junto con esto, se crearon interfaces en la aplicación móvil que son capaces de mostrar al usuario un mapa con los lugares donde debe realizar sus tomas de datos y actualizar el listado de especies a la última versión disponible. Además también se creó una vista web para que las personas que quieran estar al tanto del avance puedan hacerlo ingresando simplemente al sistema y, por último, se terminó la construcción de otra interfaz en la cual es posible descargar los informes finales que son necesarios para un correcto levantamiento de flora. El nuevo sistema brinda un ahorro de trabajo de gabinete que llega a los tres días según la empresa, permite la generación de informes automática con datos más completos de las especies y un cliente que puede supervisar el avance de sus proyectos en tiempo real.

Many advantages of the Internetâ ease of access, limited regulation, vast potential audience, and fast flow of informationâ have turned it into the most popular way to communicate and exchange ideas. Criminal and terrorist groups also use these advantages to turn the Internet into their new play/battle fields to conduct their illegal/terror activities. There are millions of Web sites in different languages on the Internet, but the lack of foreign language search engines makes it impossible to analyze foreign language Web sites efficiently. This thesis will enhance an open source Web crawler with Arabic search capability, thus improving an existing social networking tool to perform page correlation and analysis of Arabic Web sites. A social networking tool with Arabic search capabilities could become a valuable tool for the intelligence community. Its page correlation and analysis results could be used to collect open source intelligence and build a network of Web sites that are related to terrorist or criminal activities.

Submitted by Daniella Sodre (daniella.sodre@ufpe.br) on 2015-03-09T12:40:54Z No. of bitstreams: 2 dissertacao_tgr_final_digital.pdf: 2171210 bytes, checksum: f12a3f4a3a1d0cb741406b75b56f43b7 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) / Made available in DSpace on 2015-03-09T12:40:54Z (GMT). No. of bitstreams: 2 dissertacao_tgr_final_digital.pdf: 2171210 bytes, checksum: f12a3f4a3a1d0cb741406b75b56f43b7 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2012-03-07 / A área de segurança de redes de computadores e sistemas apresenta-se como uma das maiores preocupações atualmente. À medida que o número de usuários de computadores aumenta, cresce no número de incidentes de segurança. A falta de comportamentos voltados à segurança, no que se refere a uso de hardware, e-mails ou configuração de programas são fatores facilitam a implantação de códigos maliciosos. O impacto da exploração de vulnerabilidades ou de falhas de softwares tem aumentado gradualmente e causado enormes prejuízos ao redor do mundo. A divulgação destas vulnerabilidades e boas práticas de segurança têm sido uma das soluções para este problema pois permitem que administradores de redes e sistemas consigam adquirir informações relevantes para mitigar o impacto de uma atividade maliciosa. Ao notar que divulgar informações de segurança é uma das saídas para combater as atividades maliciosas e também para diminuir o impacto de uma exploração bem sucedida, várias organizações resolveram publicar este tipo de conteúdo. Estas bases encontram-se espalhadas em diferentes sítios Web, o que faz com que equipes de administração de redes e sistemas demore muito tempo buscando informações necessárias para a resolução dos seus problemas. Além disto, a exposição do conteúdo não é um fator preponderante para a solução dos problemas. Baseado neste cenário, este trabalho de mestrado se propõe a criar um sistema de apoio à recuperação de informação na Web voltado à segurança de redes e sistemas.

This Thesis is focused on the ways of getting information from the World Wide Web source . The Introduction pays attention to the theoretical approach towards data collection options . The main part of the Introduction is engaged in the Web Crawler program as the possibility of data collection from internet and consequently they are followed by alternative methods of data collection. E.g. Google Search API. The next part of the Thesis is dedicated to SAS products and their meanings in the context of reporting and internet monitoring. SAS Intelligence platform is presented as the crucial Company platform In the framework of the platform there could be found concrete SAS solutions. SAS Web Crawler and Semantic Server are described in SAS Content Categorization solution. Whilst the first two parts of Thesis are focused on the theory , the third and closing part pays attention to practical examples. There are illustrated examples of Internet Data collection, which are mainly realized in SAS. The practical part of Thesis follows the theoretical one and it cannot be detached.

The gun barrel is one of the most important parts of the whole artillery system. During firing, the wear leads to reduced performance and availability. Wear in gun barrels has different types of erosion mechanisms, in particular chemical-, thermal- and mechanical erosion. This takes place in the internal ballistic process when the projectile is fired from the gun barrel and it will affect the external ballistic parameters. Therefore, an equipment is needed to monitor and measure the wear inside different calibre gun barrels. Wear in gun barrels takes place under extreme conditions during firing due tohigh gas pressures and high temperatures arise as propellant burns. The present thesis aims to develop a type of measuring equipment that should be able to measure and monitor wear inside gun barrels between the diameter ranges of A-C mm. In this master thesis, the product development process has been adapted in order to reach the following goal which is to accomplish a technical solution for the problem associated with wear in gun barrels. The product development process is a systematical approach of developing new products. The different steps that have been evaluated are the product specification, generation of concepts, selection of concepts and layout- and detail design. Before these steps where performed, a project plan was done in order to organize the project. This was then followed by a literature review to obtain information about the problems in the project and to find inspiration from similar applications. The results of the product development process led to a concept of a moveable measure-head which uses a crawler to move inside the gun barrel and adapters to be able to use inside different calibre gun barrels. Then a rotating 3D-laser scanner to measure the change in diameter of the bore. A laser distance sensor and a receiver in order to measure the straightness and to be able to know the position of the moving measure-head in the gun barrel. At last, a wireless camera to monitor the wear inside the gun barrel. The selected concept has been developed and potential solutions for the problem have been described and formed. For the next phase of the project, the concept needs to be developed into a complete model. The next phase of the project is the prototype testing phase.

The diploma thesis deals with the problem of automated searching for reviews on web pages and also the saving of found reviews. In this work are described in detail possibilities of storing unstructured data and subsequent selection of the most suitable storage. The main part of the work deals with the analysis of HTML structure, so that it is possible to find the required information on the website. This work also deals with ways to determine the similarity of text strings in order to determine what product the review found belongs to. The Python programming language was used for implementation.

This thesis describes the design of a robotic inspection tool which is based on a differential track-drive platform. The robotic inspection tool is a one man-portable UGV that has been developed for the purpose of non-destructive evaluation (NDE) and internal inspection of environments where human penetration may be difficult or hazardous. Various NDE and sensing techniques are described in this paper but the focus is on the mechanical and electrical design of the platform itself. The platform is a versatile device for mobile robotics research and development that supports a wide variety of instrumentation and payloads. Variable height control of the payload is achieved with a scissor lift assembly that provides accurate positioning of equipped sensors and instrumentation. The architecture of the platform was designed to support future autonomous implementations. / Master of Science