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The problem of automatic recognition of human activity is one of the most important and challenging areas of research in computer vision because of the wide range of possible applications, for example surveillance, advanced human‐computer interactions, monitoring. This paper presents statistical computer vision approaches to automatically recognize different human activities.

The human activity recognition process has three steps: firstly human blobs are segmented by motion analysis; then the human body posture is estimated and, finally a temporal model of the detected posture series is generated by discrete hidden Markov models to identify the activity.

The system was tested on image sequences acquired in a real archaeological site while some people simulated both legal and illegal actions. Four kinds of activity were automatically classified with a high percentage of correct detections.

The proposed approach provides efficient solutions to some of the most common problems in the human activity recognition research field: high detailed image requirement, sequence alignment and intensive user interaction in the training phase. The main constraint of this framework is that the posture estimation approach is not completely view independent.

Results of time performance tests were very encouraging for the use of the proposed method in real time surveillance applications.

The proposed framework can work using low cost cameras with large view focal lenses. It does not need any a priori knowledge of the scene and no intensive user interaction is required in the early training phase.

The purpose of this paper is to present the first economic valuation of four environmental attributes of the Yanachaga–Chemillén National Park (PNYCH – Parque Nacional Yanachaga-Chemillén) in Peru.

This study included households in three cities adjacent to the PNYCH and assessed the willingness to pay (WTP) for preservation efforts of these natural services to avoid the predicted loss in forest area by 2030 (currently 143,425 hectares per year).

The results showed that the average WTP was US$0.695 (2.3197 soles) per household annually. Added to all households in Peru (9 million), this is equivalent to approximately 6.255 million dollars annually.

The economic valuation of these attributes is complementary to the contingent valuation and can have a significant impact, as this data influences decision-making and public policies focused on conserving forests and biodiversity.

Upon using the choice experiment (CE) model, the attributes that have the most significant impact on inhabitants’ well-being were economic benefits. The flora and fauna coverage attributes were beneficial for the inhabitants of the place because they valued the proposed recovery and conservation program in a positive and differential way.

From the collection of valuable economic data, the novelty lies in using the CE method, which has not yet been applied in valuations of natural ecosystem services in Peru.

The purpose of this chapter is to identify specific instructional strategies to help English language learners develop literacy skills. Potential difficulties in areas of decoding, vocabulary, and fluency are explored along with suggestions to implement effective instruction. The intention of this chapter is not to be a research document, but a pragmatic guide for educators of English language learners. Through reflective practice and backed by research, I walk readers through classroom and professional development scenarios and also present ways to effectively support the emerging literacy skills of English language learners. Readers will be presented with research-based instructional methods shown to enhance crucial early literacy skills for English language learners along with practical suggestions for teachers to put research into practice in the classroom. Scenarios and research-based practices illuminate how to effectively work with English language learners. Research-based evidence is presented, showing that English language learners go through the same developmental milestones as native English-speaking students, but may require some additional modifications along with explicit instruction. The chapter describes how teachers can build foundational reading skills for English language learners, something that is crucial for later academic success.

We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in the construction of hegemonies in SEA research in Brazil. In particular, we examine the role of hegemony in relation to the co-option of SEA literature and sustainability in the Brazilian context by the logic of development for economic growth in emerging economies. The methodological approach adopts a post-structural perspective that reflects Laclau and Mouffe’s discourse theory. The study employs a hermeneutical, rhetorical approach to understand and classify 352 Brazilian research articles on SEA. We employ Brown and Fraser’s (2006) categorizations of SEA literature to help in our analysis: the business case, the stakeholder–accountability approach, and the critical case. We argue that the business case is prominent in Brazilian studies. Second-stage analysis suggests that the major themes under discussion include measurement, consulting, and descriptive approach. We argue that these themes illustrate the degree of influence of the hegemonic politics relevant to emerging economics, as these themes predominantly concern economic growth and a capitalist context. This paper discusses trends and practices in the Brazilian literature on SEA and argues that the focus means that SEA avoids critical debates of the role of capitalist logics in an emerging economy concerning sustainability. We urge the Brazilian academy to understand the implications of its reifying agenda and engage, counter-hegemonically, in a social and political agenda beyond the hegemonic support of a particular set of capitalist interests.

This chapter reviews Colombia's unique environmental and social features and Colombia's realities in the third decade of the twenty-first century. It is crucial to understand the country's recent past and to take its structural and historic struggles into account when building sustainable futures.

This chapter also reports the findings of a primary data research study using futures scenario methodologies. The study participants represent different stakeholders' visions of four alternative futures regarding the climate crisis and massive biodiversity loss and social and economic crises.

This chapter's empirical study identifies Colombia's constraints to building a future that is just, inclusive and centred on nature. In addition, we describe in detail the structural changes needed for Colombia to achieve the best possible future scenario (socioeconomic prosperity and resilience to climate change). Finally, this chapter offers conclusions and recommendations.

In 1996, capital was raised to launch a Pepsi‐Cola production line in war‐torn Tajikistan. Production capacity was 6,000 bottles per hour, in a country experiencing a painful transition to a market economy.

THE Fourth European Work Study Congress, held in Paris during the third week of May, was a well‐organized affair. A tribute is due to M. Loubert and his colleagues for the way in which they devised such well‐lubricated machinery for the convenience of their guests and for the imaginative touch of holding the official dinner aboard a bateau‐mouche as it sailed for two hours up and down the Seine.

Nobody concerned with political economy can neglect the history of economic doctrines. Structural changes in the economy and society influence economic thinking and, conversely, innovative thought structures and attitudes have almost always forced economic institutions and modes of behaviour to adjust. We learn from the history of economic doctrines how a particular theory emerged and whether, and in which environment, it could take root. We can see how a school evolves out of a common methodological perception and similar techniques of analysis, and how it has to establish itself. The interaction between unresolved problems on the one hand, and the search for better solutions or explanations on the other, leads to a change in paradigma and to the formation of new lines of reasoning. As long as the real world is subject to progress and change scientific search for explanation must out of necessity continue.