The use of desiccant materials is crucial in many applications, such as dehumidification rotors, in OLED screen and as desiccant materials in dish washers, for example. Upsalite® is a novel, anhydrous, micro-mesoporous, and large surface area structure consisting of amorphous magnesium carbonate which has been shown to exhibit a good water sorption capacity. Depending on the heat treatment of Upsalite® after synthesis, the material exhibits different sorption capacity and hydrolytic stability. Calcined Upsalite® has a higher sorption capacity compared to as-synthesized, but crystallizes into nesquehonite when stored in a relative humidity of 100 % for several days. The need to stabilize the material arises and the use of two different aminosilanes as surface stabilizers has been evaluated. Two different deposition techniques from gas phase have been used, atomic layer deposition and vapor phase grafting, which are evaluated and compared.   The results of the functionalization show an increase in decomposition temperature by ~25 °C of the functionalized materials compared to non-functionalized. The initial water sorption capacity of the functionalized material increases by up to 80 %, when stored in a relative humidity of 100 % for 24 h and shows a stabilizing effect after five cycles of repeated exposure to high humidity. The long term stability seems to have decreased due to pore collapse, when the functionalized material is cycled 5 times for one week in a repeated relative humidity of 100 %. The stability of the material when exposed to two liquids of different pH was also evaluated and the functionalized material exhibits a slower increase of the pH in the buffer solution, implying a retardation of Upsalite® dissolution. The conclusion is that a functionalization of the material with aminosilane increases the initial sorption capacity and has a stabilizing effect.

International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / With the rapid development of urban economy, there are bus increasing, route extending, and shuttle frequency increasing etc. At the same time, road construction is subject to land surface, so traffic jam often occurs. It is a big trouble for life of citizens and problem for economy development. So it needs to be improved as fast as possible. Vehicle monitoring system for public traffic in Beijing can expediently monitor the state of each controlled bus, thereby making perfect management. With the integration of GPS, analog trunked communication and digital map, the old, blinding manage system of public traffic would be changed into advanced, visualized management mode, and several routes are dispatched in one dispatch center at the same time. The system frame and its components are introduced in this paper.

Unfortunately, cyber-attacks, which are the consequence of our increasing dependence on digital technology, is a phenomenon that we have to live with today. As technology becomes more advanced and complex, so have the types of malware that are used in these cyber-attacks. Currently, targeted cyber-attacks directed at CIIs such as financial institutions and telecom companies are on the rise. A particular group of malware known as APTs, which are used for targeted attacks, are very difficult to detect and prevent due to their sophisticated and stealthy nature. These malwares are able to attack and wreak havoc (in the targeted system) within a matter of seconds; this is very worrying because traditional cyber security defence systems cannot handle these attacks. The solution, as proposed by some in the industry, is the use of BDA systems. However, whilst it appears that BDA has achieved greater success at large companies, little is known about success at smaller companies. Also, there is scarcity of research addressing how BDA is deployed for the purpose of detecting and preventing cyber-attacks on CII. This research examines and discusses the effectiveness of the use of BDA for detecting cyber-attacks and also describes how such a system is deployed. To establish the effectiveness of using a BDA, a survey by questionnaire was conducted. The target audience of the survey were large corporations that were likely to use such systems for cyber security. The research concludes that a BDA system is indeed a powerful and effective tool, and currently the best method for protecting CIIs against the range of stealthy cyber-attacks. Also, a description of how such a system is deployed is abstracted into a model of meaningful practice.

Submitted by João Arthur Martins (joao.arthur@ufpe.br) on 2015-03-10T18:13:40Z No. of bitstreams: 2 Dissertacao Felipe Borgiani.pdf: 3365746 bytes, checksum: fbfcefa352bee971420dbb93de7d9b5a (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) / Made available in DSpace on 2015-03-11T17:39:59Z (GMT). No. of bitstreams: 2 Dissertacao Felipe Borgiani.pdf: 3365746 bytes, checksum: fbfcefa352bee971420dbb93de7d9b5a (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2013-09-06 / O trânsito caótico das grandes cidades, especialmente em países em desenvolvimento, impacta diretamente na qualidade de vida dos cidadãos, principalmente daqueles que necessitam diariamente dos sistemas de transporte público rodoviários. Diversas abordagens para amenizar esses problemas vem sido apresentadas por pesquisadores do mundo todo, na forma de diferentes propostas de sistemas de transporte inteligentes. Tendo em vista o desenvolvimento tecnológico dos últimos anos, aliado à expansão e popularização do uso de dispositivos computacionais portáteis como smartphones e tablets, este trabalho propõe-se a apresentar um sistema, componente do Sistema de Transporte Inteligente UbiBus, denominado Pilgrim, capaz de gerar e classificar rotas de ônibus em tempo real, e seja sensível ao contexto que permeia o sistema de transporte público rodoviário, em especial o trânsito. Para tanto, serão propostas duas abordagens utilizando técnicas de otimização da inteligência artificial, Algoritmos Genéticos e Hill-Climbing com Reinício Aleatório, para o desenvolvimento do sistema, e apresentadas a arquitetura, a modelagem e os detalhes da implementação. Este trabalho ainda apresenta os experimentos realizados para avaliar o desempenho de ambas as abordagens, comparando-as, e também uma pesquisa feita com potenciais usuários do sistema UbiBus, com o objetivo de avaliar a qualidade das rotas geradas pelo sistema Pilgrim.