VideoGraph: Recognizing Minutes-Long Human Activities in Videos

Many human activities take minutes to unfold. To represent them, related works opt for statistical pooling, which neglects the temporal structure. Others opt for convolutional methods, as CNN and Non-Local. While successful in learning temporal concepts, they are short of modeling minutes-long temporal dependencies. We propose VideoGraph, a method to achieve the best of two worlds: represent minutes-long human activities and learn their underlying temporal structure. VideoGraph learns a graph-based representation for human activities. The graph, its nodes and edges are learned entirely from video datasets, making VideoGraph applicable to problems without node-level annotation. The result is improvements over related works on benchmarks: Epic-Kitchen and Breakfast. Besides, we demonstrate that VideoGraph is able to learn the temporal structure of human activities in minutes-long videos

Impacts of local human activities on the Antarctic environment

We review the scientific literature, especially from the past decade, on the impacts of human activities on the Antarctic environment. A range of impacts has been identified at a variety of spatial and temporal scales. Chemical contamination and sewage disposal on the continent have been found to be long-lived. Contemporary sewage management practices at many coastal stations are insufficient to prevent local contamination but no introduction of non-indigenous organisms through this route has yet been demonstrated. Human activities, particularly construction and transport, have led to disturbances of flora and fauna. A small number of non-indigenous plant and animal species has become established, mostly on the northern Antarctic Peninsula and southern archipelagos of the Scotia Arc. There is little indication of recovery of overexploited fish stocks, and ramifications of fishing activity oil bycatch species and the ecosystem could also be far-reaching. The Antarctic Treaty System and its instruments, in particular the Convention for the Conservation of Antarctic Marine Living Resources and the Environmental Protocol, provide a framework within which management of human activities take place. In the face of the continuing expansion of human activities in Antarctica, a more effective implementation of a wide range of measures is essential, in order to ensure comprehensive protection of the Antarctic environment, including its intrinsic, wilderness and scientific values which remains a fundamental principle of the Antarctic Treaty System. These measures include effective environmental impact assessments, long-term monitoring, mitigation measures for non-indigenous species, ecosystem-based management of living resources, and increased regulation of National Antarctic Programmes and tourism activities

False Idles: The Politics of the "Quiet Life"

The dominant Greek and Roman ideology held that the best human life required engaging in politics, on the grounds that the human good is shared, not private, and that the activities central to this shared good are those of traditional politics. This chapter surveys three ways in which philosophers challenged this ideology, defended a withdrawal from or transformation of traditional politics, and thus rethought what politics could be. Plato and Aristotle accept the ideology's two central commitments but insist that a few exceptional human beings could transcend the good of human activities. Epicurus argues that the human good is private, not shared. Socrates and some of his followers, including especially the Stoics, argue that the activities central to the shared human good are not those of traditional politics

Impact of human resource management information systems on the quality of appraisal performance process

Copyright @ 2013 EMCIS.These days the recent development of information systems and their impact on human resource activities is one of the main hot debates in many large organizations. Many managers argue that adopting technology to incorporate the HR activities could help to improve the quality of management’s decision making process. Alternatively, there are big companies which are not adopting any specific type of technology in their HR activities. The purpose of this paper is to identify the impacts of HRIS on the quality of HR activities, particularly from the appraisal performance point of view. The concept of the impact of HRIS on HR activities was applied to the case of company X which is one of the leader chemical companies in UK. In that process, interviews were conducted and they were the main methods for collecting personnel feedback, opinions and experiences about their new HRIS. It could be seen that, although the result of the research showed improvement in the quality of the activities in HR department, the quality growth was not as much as expected. It was assumed that the reason behind this limited impact on some activities could be because the new system needs some more time to implement potential efficiency gains. It is too early to measure the impact of new system on part of HR activities such as employees’ satisfaction. Keywords: Human Resource Information Systems, Management Information Systems, Executive Information Systems, Strategic Information Systems, Information Systems, Human Resources

Simulating activities: Relating motives, deliberation, and attentive coordination

Activities are located behaviors, taking time, conceived as socially meaningful, and usually involving interaction with tools and the environment. In modeling human cognition as a form of problem solving (goal-directed search and operator sequencing), cognitive science researchers have not adequately studied “off-task” activities (e.g., waiting), non-intellectual motives (e.g., hunger), sustaining a goal state (e.g., playful interaction), and coupled perceptual-motor dynamics (e.g., following someone). These aspects of human behavior have been considered in bits and pieces in past research, identified as scripts, human factors, behavior settings, ensemble, flow experience, and situated action. More broadly, activity theory provides a comprehensive framework relating motives, goals, and operations. This paper ties these ideas together, using examples from work life in a Canadian High Arctic research station. The emphasis is on simulating human behavior as it naturally occurs, such that “working” is understood as an aspect of living. The result is a synthesis of previously unrelated analytic perspectives and a broader appreciation of the nature of human cognition. Simulating activities in this comprehensive way is useful for understanding work practice, promoting learning, and designing better tools, including human-robot systems