University of Massachusetts Amherst

About: University of Massachusetts Amherst is a education organization based out in Amherst Center, Massachusetts, United States. It is known for research contribution in the topics: Population & Galaxy. The organization has 37274 authors who have published 83965 publications receiving 3834996 citations. The organization is also known as: UMass Amherst & Massachusetts State College.

The theory of planned behaviour is alive and well, and not ready to retire: a commentary on Sniehotta, Presseau, and Araújo-Soares

Abstract: In their call to lay the theory of planned behaviour (TPB) to rest, Sniehotta, Presseau, and Araujo-Soares (2014) contend that the theory has been thoroughly discredited, at least as a guide to pre...

Past Postmodernism? Reflections and Tentative Directions

Abstract: In this article we first reflect on the significant and positive impact of postmodernism for organizational theorizing during the past decade. Through several examples we point to contributions that poststructuralist perspectives have brought to the field. Finally, we consider four contemporary theoretical tendencies—feminist poststructuralist theorizing, postcolonial analyses, actor-network theory, and narrative approaches to knowledge—as heirs (apparent) of the postmodern turn for organizational theorizing past postmodernism.

A survey of practical issues in underwater networks

Abstract: Underwater sensor networks are attracting increasing interest from researchers in terrestrial radio-based sensor networks. There are important physical, technological, and economic differences between terrestrial and underwater sensor networks. Previous surveys have provided thorough background material in underwater communications, and an introduction to underwater networks. This has included detail on the physical characteristics of the channel [1], on underwater acoustic communications [2, 3, 4], and surveys of underwater acoustic networks [5, 6, 7, 8]. In this survey, we highlight a number of important practical issues that are not emphasized in the recent surveys of underwater networks, with an intended audience of researchers who are moving from radio-based terrestrial networks into underwater networks. We focus on issues relevant to medium access control (MAC) protocols, which are an area of continuing work both in terrestrial sensor networks and especially in underwater networks. Underwater networks are often characterized by more expensive equipment, higher mobility, sparser deployments, and different energy regimes when compared with terrestrial sensor networks. We discuss the role of these factors in the different set of challenges that face underwater networks. We identify several of these points in the outline below, and we expand upon them in later sections. In Section 2, we provide a classification scheme for underwater networks. Link-layer range, node density, and geographic coverage of nodes are key factors in determining the type of network deployed. The key differentiating factor for underwater net-