Intrusion Prevention Systems (IPSs) have long been proposed as a defense against attacks that propagate too fast for any manual response to be useful. While purely-network-based IPSs have the advantage of being easy to install and manage, research have shown that this class of systems are vulnerable to evasion [70, 65], and can be tricked into filtering normal traffic and create more harm than good [12, 13]. Based on these researches, we believe information about how the attacked hosts process the malicious input is essential to an effective and reliable IPS. In existing IPSs, honeypots are usually used to collect such information. The collected information will then be analyzed to generate countermeasures against the observed attack. Unfortunately, techniques that allow the honeypots in a network to be identified ([5, 71]) can render these IPSs useless. In particular, attacks can be designed to avoid targeting the identified honeypots. As a result, the IPSs will have no information about the attacks, and thus no countermeasure will ever be generated. The use of honeypots is also creating other practical issues which limit the usefulness/feasibility of many host-based IPSs. We propose to solve these problems by duplicating the detection and analysis capability on every protected system; i.e., turning every host into a honeypot. / text

Strategic planning in conservation of natural protected areas should include a human component, since human activity can threaten the health of the natural site. It is the competition for the resources that makes management of these areas a contentious issue. Effective education is key in resolving such issues and in ensuring that informed decisions are made concerning the uses of these valuable natural assets. This study tests this assumption in two phases.The first phase addresses the need to present a wider picture on the current state of environmental education practices in Mexico: Who is engaging in environmental education practices? How important is it for their organization? Who are they targeting and which methods and settings are they choosing and what environmental issues are they addressing? To achieve this, we administered a survey to 118 representatives from conservation and environmental education agencies and organizations in Mexico. Results show that conservation non-governmental organizations (NGOs) are taking the lead in the field of environmental education in Mexico. Education appears to be an important tool that is used widely by environmental and conservation organizations. At the same time, there seems to be a serious lack of funding.The second phase concentrates on conservation education, a specific aspect of environmental education that focuses on biodiversity issues. This is a growing field in Mexico, thanks especially to the system of Natural Protected Areas and the supporting network of conservation NGOs. This phase of the study presented a comparative analysis of perceived roles of education in the conservation of nature, between Mexico and the US and between practitioners and funders. In this phase we also compared the prescribed parameters defined by well known frameworks from academia with those perceived by education and conservation practitioners. We used a combination of online surveying and content analysis to evaluate this issue. Results illustrate that there are similarities between Mexico and the U.S., but with key differences in the target audiences, methods and settings. Funders do not consider education one of their high priorities, while practitioners do. This discrepancy may hamper the growth and maturation of conservation education in Mexico.

Despite the dramatic increase in ecotourism as a sustainable development strategy over the last two decades (Honey 2008; Yunis 2000), theoretical models to interpret and evaluate ecotourism—as well as the broader field of tourism—are lacking (Farrell and Twining-Ward 2003; Weaver and Lawton 2007). Farrell and Twining-Ward (2003) call for a reconceptualization of tourism study that incorporates social-ecological systems (SES) theory. This dissertation responds by assessing ecotourism as an SES in a dryland setting, addressing the question: "What key characteristics of ecotourism increase social-ecological resilience?" The study site is Santa Rosa National Park and surrounding communities in Guanacaste, Costa Rica. Higham and Lück (2008) cite sustainability as the "ultimate goal of ecotourism" (Higham and Lück 2008, p 124); however sustainability itself proves to be a difficult concept to measure and evaluate (Cater and Lowman 1994; Dernbach 2002; Weaver 2001a). SES theory recognizes sustainability as a process rather than an end goal and identifies resilience as a key attribute (Berkes, Colding, and Folke 2003). With ecotourism as an economic strategy of nearly every developing country since the early 1990s and an increasing economic strategy in rural areas worldwide (Valaoras, Pistolas, and Sotiropoulou 2002; Honey 2008), this study investigates ecotourism through the lens of social-ecological resilience for increased sustainability. Based on a 12-month survey conducted in Santa Rosa National Park and the surrounding area, this study identifies characteristics of ecotourism that can cause different levels of resilience using indicators of increasing biodiversity, economic diversity and social capital. These relationships are represented by linked and continually changing social and ecological systems, diagramed by Holling‘s adaptive renewal cycle (Berkes, Colding, and Folke 2003; Gunderson and Holling 2002). Three research papers are included as part of this dissertation: 1) Área de Conservación Guanacaste, Parque Nacional Santa Rosa Ecotourism Study: Final Survey Results, Analysis and Recommendations; 2) Ecotourism‘s Contribution to Social-ecological Resilience: A Case Study Analysis of Rural, Dryland Ecotourism in Guanacaste, Costa Rica; and 3) Barrier-free Ecotourism? The Costa Rican Approach. Findings of this study include recommendations for ecotourism programs to increase social-ecological resilience and contribute to the sustainability of linked SESs.

Tyrimo tikslas yra išanalizuoti Prienų rajono saugomų ir rekreacinių teritorijų tvarkymą ir naudojimą, aptarti, kuo unikalus šis rajonas. Tyrimo objektas yra Prienų rajono saugomos ir rekreacinės teritorijos. Tyrimo uţdaviniai: 1. Išanalizuoti Prienų rajono saugomų ir rekreacinių teritorijų infrastruktūros pritaikymą. 2. Aptarti Prienų rajono turizmo galimybes. 3. Atlikti anketinę apklausą, siekiant įvertinti saugomų teritorijų problemas, būklę bei nustatyti saugomų teritorijų rinkimų aktualumą. Tyrimo metodika. Tyrimui atlikti taikomi literatūros šaltinių analizės, statistinių duomenų analizės ir anketinės apklausos metodai. Siekiant ištirti saugomų ir rekreacinių teritorijų planavimą, saugojimą ir naudojimą, atlikta Prienų rajono saugomų teritorijų analizė, aptarta rekreacinės teritorijos. Pateikiami anketinės apklausos rezultatai. Tyrimo rezultatai: * pirmoje dalyje išsamiai išanalizuotos Prienų rajono saugomos teritorijos; * antroje dalyje aptartos turizmo galimybės, išanalizuota Prienų rajono dvarų duomenų bazė, nustatyta, kad 70 proc. rajono dvarų nėra naudojami, rekonstruota tik Daugšiagirės buvusi dvaro sodyba, atskleisti rajono unikalūs poţymiai: aukščiausias Lietuvos maumedis, dvikamienis ąţuolas, 46 saugomos teritorijos ir kt.; * trečioje dalyje atlikta anketinė apklausa, pagal apklausos duomenis nustatytos saugomų teritorijų problemos, lankymosi prieţastys, nustatyta geriausių saugomų teritorijų rinkimų būtinumas ir vertinimo kriterijai. Pagrindinės... [toliau žr. visą tekstą] / The purpose of research is to analyse the clearing and usage of the protected and recreational territories in Prienai district and discuss wherewith this district is unique. The subject of research is protected and recreational territories in Prienai district. The tasks of research: 1. To analyse the infrastructure adjustment of protected and recreational territories in Prienai district. 2. To discuss the tourism facilities in Prienai district. 3. To accomplish the survey seeking to evaluate the problems of protected territories, conditions and identify the relevance of protected territories selection. The methodology of research: Accomplish the research there were used methods of literature sources analysis, statistical data analysis and questionnaire survey analysis. Seeking to investigate the planning, protection and usage of protected and recreational territories, there were accomplished Prienai district protected terrritories analysis, discussed recreational territories. There is presented the results of questionnaire survey – protected territories vacationing approach to these territories and possibility to arrange protected territories selection. The results of research: ● There were thoroughly analysed Prienai district protected territories in the first part of work; ● In the second part of work, there was discussed tourism facilities, analysed Prienai district basis of estate data, it was revealed, that 70 percent district‘s estates are not used, only... [to full text]

This thesis explores the relationship between place attachment and pro-environmental behaviour expressed by visitors to Point Pelee National Park. Place attachment, the functional, cognitive and emotional bond with a place, may play a role in promoting environmentally responsible behaviours. This may be especially true of place-specific pro-environmental behaviours; however place attachment may also have a "carry-over" effect in that its impact on individuals' self identity may also foster pro-environmental behaviour in individuals' every day lives. <br /><br /> An exploration of these relationships was achieved, first by measuring the intensity of place attachment and pro-environment behavioural intentions expressed by visitors to Point Pelee National Park. This was followed by an examination of the relationship between these two constructs using correlation analysis and structural equation modeling. Data was collected with a mail-based self-completed questionnaire. A quota sample of visitors to Point Pelee National Park was utilized. A response rate of 32% (<em>n</em> = 355) was achieved. <br /><br /> The relationship between place attachment and pro-environmental intentions was explored further through the measurement of several related variables. These factors include place satisfaction (based on an appraisal of nature, social and activity-based environments), motivation for visiting the park (related to social interaction and nature observation, as well as activity-based and learning opportunities), distance between the park and visitors' residences, membership in environmental organizations, and visitation patterns including visitation to the park during childhood, length of affiliation with the park, length of visit to the park, and frequency of visitation to the park. Theoretical and empirical research suggests that these factors may affect place attachment, pro-environment behavioural intentions, and/or the relationship between these two constructs. <br /><br /> Study results found positive associations between place attachment and all of these variables with the exception of visitation motives associated with learning and engaging in a favourite activity. The strongest predictive relationships were observed with anti-substitution (the inability of an individual to substitute the park for another destination because of a lack of resources such as time or money or a lack of awareness of comparable sites) followed by frequency of visits to the park; park commitment (based on Friends group membership and donations of time and money to the Friends group); Friends of Point Pelee (FoPP) membership; and park relationship (which was based on visitation to the park as a child and length of affiliation); and, satisfaction with the park. <br /><br /> Results support the proposition that place attachment has a strong positive association with both park-specific pro-environment behavioural intentions (e. g. , Write letters in support of Point Pelee N. P. and similar protected areas) as well as general pro-environment behavioural intentions (e. g. , Pay extra for transportation if it is environmentally-friendly). Place attachment strongly predicted park-specific, and moderately predicted general pro-environmental intentions. A number of other variables had an indirect effect on park-specific intentions; notable effects were demonstrated by frequency of visits; park relationship; visitation to the park as a child; place satisfaction; social satisfaction; FoPP membership; and, park commitment; anti-substitution. These affects were mediated by place attachment. After place attachment the strongest predictors of park-specific intentions were anti-substitution; frequency of visits; park commitment; and, general environmental commitment (which was based on membership in an environmental organization and donations of time and money to that organization). <br /><br /> Place attachment was not the only direct predicator of general pro-environmental intentions; general environmental commitment and membership in an environmental organization also directly predicted general pro-environmental intentions. Notable indirect effects, mediated by place attachment were produced by frequency of visits; park relationship; FoPP membership; park commitment; and anti-substitution. The strongest predictors of general pro-environmental intentions were general environmental commitment, followed by place attachment, membership in an environmental organization, and frequency of park visitation. <br /><br /> These findings correspond with much of the literature published on place attachment formation and the development of pro-environmental behaviours. The most notable contribution of this study is its comparison of place attachment's impact on general versus place-specific behaviours, and the role that several related variables play in this relationship.

The economic modernization of the Amazon fostered by the Brazilian military government during the 1960s and 1970s was largely realized without taking into consideration the presence of local households which lived from the extraction of forest products (mainly non-timber). When they began to be expulsed, a political resistance, often guided by the Catholic Church, appeared as well as the creation of unions based on traditional identities, especially that of rubber tappers. During the 1980s, these unions made a strategic alliance with the ecologist movement which started to consider traditional populations, whose lifestyle depended on the forest, as allies for the protection of the Amazon rainforest. The movement gained a decisive momentum at the end of the decade by putting forward new proposals of land tenure for traditional populations, grounded on collective land rights. This strategy has been very efficient during the 1990s and 2000s, during which about 1,300,000 km(2) of rainforest were set apart and reserved for the use of "traditional communities" under a variety of legal status. But it has also led to mix under the same "collective" etiquette and principles a number of different ways of using and managing land and natural resources. This assumption however should be nuanced by a careful analysis of the resource management systems existing in each case, for they are in general complex and mix varying proportions of individual and collective decisions. The aim of this paper is to explore this question using the example of the Chico Mendes agroextractive settlement (PAE-CM), inhabited by about 100 rubber tapper families and symbolic of the political struggle of traditional populations in the Amazon for being the home of the rubber tapper leader Chico Mendes assassinated in 1988. Applying Ostrom "design principles", we try to catch what are the local institutional arrangements and to see if they suggest collective or individual management, and what the boundaries between both categories are. As a conclusion, we find that the PAE-CM's system is much less collective than expected, and also very much controlled by external authorities, in a logic pretty much away from the idea of a CPR system. This finding is useful to understand the shortcomings in the actual management of the PAE but also to foresee difficulties which will probably arise in the management of many of the areas which have gained collective land rights or collective management statutes in the Amazon.

The destruction of tropical forests is the most concerning current threat to biodiversity. Although protected areas have long been used as the primary tool for biodiversity conservation, there is an increasing need to find suitable conservation strategies for the growing area of human-modified land. This thesis addresses three themes that have been identified as the most pressing areas for research in human-modified landscapes: biodiversity conservation beyond protected areas, forest restoration, and the human–environment relationship. By studying the interactions between birds, plants, and people with isolated Ficus (Moraceae) trees in Assam, India, this thesis reports several important findings: 1) isolated Ficus trees are extraordinarily important to frugivorous bird communities that inhabit human-modified landscapes; 2) the frugivores visiting these isolated trees still sustained the majority of ecological function found in trees close to the forest edge; 3) isolated Ficus trees are also exceptionally important feeding sites for insectivorous birds in human-modified landscapes, compared to other trees; 4) Ficus trees are better restoration nuclei than other isolated trees; 5) although the sacred status of Ficus trees in Assam has a major influence on their abundance and distribution, faith-based values are insufficient in ensuring their conservation. In conclusion, this thesis finds that isolated Ficus trees are critically important micro-sites for conservation in human-modified landscapes, the loss of which may lead to avifaunal collapse and a reduction in restoration potential. However, by stressing their ecological and cultural properties, it may be possible to build a strong case for the conservation of isolated Ficus trees in Assam and elsewhere.

Thèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal.

An important direction in nanoscale science is to synthesize materials whereby atomic clusters serve as the building blocks. Properties of these clusters can be controlled through size and composition, and such an approach offers a pathway toward designing larger, customized materials. One way to stabilize such materials is through the use of ligated clusters. Ag4Ni2(DMSA)4 is one such cluster, the first with a bimetallic core, and has been stabilized by the experimental group of A. Sen at The Pennsylvania State University. The theoretical studies undertaken in this thesis were directed toward providing information on the atomic structure, nature of electronic states, optical spectra, and any magnetic information of this new species. Theoretical studies have also been carried out on various clusters to provide input into the fragmentation data obtained through MS/MS experiments.

The thesis presents results of a qualitative research conducted in The Giant Mountains National Park (Czech Republic). The research objective was to assess effects of various behaviour modification strategies on rule acceptance among Park visitors. Using a particular group of visitors (i.e. skialpinists) as an example, the conflict relationship between Park authorities and the public is described, as well as its sources and consequences for conservation efforts. Moreover, effectivity of six psychological strategies (participation, modelling, feedback providing, information providing, social norms highlighting and prompts) aimed at enhancing rule acceptance is discussed, based on focus group, as well as "real life test" data.