ContextContacts: re-designing SmartPhone's contact book to support mobile awareness and collaboration
19 Sep 2005-pp 167-174
TL;DR: This work is interested in re-designing a Smartphone's contact book to provide cues of the current situations of others, and argues how the design choices support mobile communication decisions and group coordinations by promoting awareness.
Abstract: Acontextuality of the mobile phone often leads to a caller's uncertainty over a callee's current state, which in turn often hampers mobile collaboration. We are interested in re-designing a Smartphone's contact book to provide cues of the current situations of others. ContextContacts presents several meaningful, automatically communicated situation cues of trusted others. Its interaction design follows social psychological findings on how people make social attributions based on impoverished cues, on how self-disclosure of cues is progressively and interactionally managed, and on how mobility affects interaction through cues. We argue how our design choices support mobile communication decisions and group coordinations by promoting awareness. As a result, the design is very minimal and integrated, in an "unremarkable" manner, to previously learned usage patterns with the phone. First laboratory and field evaluations indicate important boundary conditions for and promising avenues toward more useful and enjoyable mobile awareness applications.
Citations
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TL;DR: This paper presented a mobile application usability conceptualization and survey instrument following the 10- step procedure recommended by MacKenzie et al. (2011), and found that the constructs that represented the conceptualization were good predictors of both outcomes and compared favorably to an existing instrument based on Microsoft's usability guidelines.
Abstract: This paper presents a mobile application usability conceptualization and survey instrument following the 10- step procedure recommended by MacKenzie et al. (2011). Specifically, we adapted Apple's user experience guidelines to develop our conceptualization of mobile application usability that we then developed into 19 first-order constructs that formed 6 second-order constructs. To achieve our objective, we collected four datasets: content validity (n = 318), pretest (n = 440), validation (n = 408), and cross-validation (n = 412). The nomological validity of this instrument was established by examining its impact on two outcomes: continued intention to use and mobile application loyalty. We found that the constructs that represented our mobile application usability conceptualization were good predictors of both outcomes and compared favorably to an existing instrument based on Microsoft's usability guidelines. In addition to being an exemplar of the recent procedure of MacKenzie et al. to validate an instrument, this work provides a rich conceptualization of an instrument for mobile application usability that can serve as a springboard for future work to understand the impacts of mobile application usability and can be used as a guide to design effective mobile applications.
316 citations
26 Sep 2010
TL;DR: Significant differences are found in terms of users' decisions about what location information to share, their privacy concerns, and how privacy-preserving their disclosures were in social-driven location sharing.
Abstract: The popularity of micro-blogging has made general-purpose information sharing a pervasive phenomenon. This trend is now impacting location sharing applications (LSAs) such that users are sharing their location data with a much wider and more diverse audience. In this paper, we describe this as social-driven sharing, distinguishing it from past examples of what we refer to as purpose-driven location sharing. We explore the differences between these two types of sharing by conducting a comparative two-week study with nine participants. We found significant differences in terms of users' decisions about what location information to share, their privacy concerns, and how privacy-preserving their disclosures were. Based on these results, we provide design implications for future LSAs.
174 citations
Cites background from "ContextContacts: re-designing Smart..."
...These one-to-many LSAs are often integrated with services that provide a relatively extensive social network, like Facebook (Locaccino [30]), instant messaging (IMBuddy [17]), or one’s address book (ContextContacts [26])....
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TL;DR: Both the beta4 integrin ligand-binding and cytoplasmic domains together with EGF were required for the synergistic activation of a Rac-dependent signaling pathway that was essential for keratinocyte directional migration in response to a galvanotactic stimulus.
Abstract: Endogenous DC electric fields (EF) are present during embryogenesis and are generated in vivo upon wounding, providing guidance cues for directional cell migration (galvanotaxis) required in these processes. To understand the role of beta (β)4 integrin in directional migration, the migratory paths of either primary human keratinocytes (NHK), β4 integrin-null human keratinocytes (β4−), or those in which β4 integrin was reexpressed (β4+), were tracked during exposure to EFs of physiological magnitude (100 mV/mm). Although the expression of β4 integrin had no effect on the rate of cell movement, it was essential for directional (cathodal) migration in the absence of epidermal growth factor (EGF). The addition of EGF potentiated the directional response, suggesting that at least two distinct but synergistic signaling pathways coordinate galvanotaxis. Expression of either a ligand binding–defective β4 (β4+AD) or β4 with a truncated cytoplasmic tail (β4+CT) resulted in loss of directionality in the absence of EGF, whereas inhibition of Rac1 blinded the cells to the EF even in the presence of EGF. In summary, both the β4 integrin ligand–binding and cytoplasmic domains together with EGF were required for the synergistic activation of a Rac-dependent signaling pathway that was essential for keratinocyte directional migration in response to a galvanotactic stimulus.
147 citations
17 Sep 2006
TL;DR: In this article, the authors report an in-depth empirical investigation of the assumption that the mobile phone is a suitable proxy for its owner's location, in which they measured proximity of the phone to its owner over several weeks of continual observation.
Abstract: Implicit in much research and application development for mobile phones is the assumption that the mobile phone is a suitable proxy for its owner's location. We report an in-depth empirical investigation of this assumption in which we measured proximity of the phone to its owner over several weeks of continual observation. Our findings, summarizing results over 16 different subjects of a variety of ages and occupations, establish baseline statistics for the proximity relationship in a typical US metropolitan market. Supplemental interviews help us to establish reasons why the phone and owner are separated, leading to guidelines for developing mobile phone applications that can be smart with respect to the proximity assumption. We show it is possible to predict the proximity relationship with 86% confidence using simple parameters of the phone, such as current cell ID, current date and time, signal status, charger status and ring/vibrate mode.
133 citations
Patent•
05 Sep 2008TL;DR: An intelligent contact management technique that automatically manages contacts on a communication device such as a mobile phone is described in this article, where the intelligent management technique can automatically determine and display a user's favorite contacts on display of a mobile device.
Abstract: An intelligent contact management technique that automatically manages contacts on a communication device such as a mobile phone is described. The intelligent management technique can automatically determine and display a user's favorite contacts on a display of a mobile device. The technique can also intelligently group contacts based on their contact frequency. It can provide a contact-oriented event notification that notifies a user when a contact event has occurred. The contact-oriented event notification can be associated with a visual representation of an associated contact.
93 citations
References
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Book•
01 Jan 1959
TL;DR: For instance, in the case of an individual in the presence of others, it can be seen as a form of involuntary expressive behavior as discussed by the authors, where the individual will have to act so that he intentionally or unintentionally expresses himself, and the others will in turn have to be impressed in some way by him.
Abstract: hen an individual enters the presence of oth ers, they commonly seek to acquire information about him or to bring into play information about him already possessed. They will be interested in his general socio-economic status, his concep tion of self, his attitude toward them, his compe tence, his trustworthiness, etc. Although some of this information seems to be sought almost as an end in itself, there are usually quite practical reasons for acquiring it. Information about the individual helps to define the situation, enabling others to know in advance what he will expect of them and what they may expect of him. Informed in these ways, the others will know how best to act in order to call forth a desired response from him. For those present, many sources of information become accessible and many carriers (or “signvehicles”) become available for conveying this information. If unacquainted with the individual, observers can glean clues from his conduct and appearance which allow them to apply their previ ous experience with individuals roughly similar to the one before them or, more important, to apply untested stereotypes to him. They can also assume from past experience that only individuals of a par ticular kind are likely to be found in a given social setting. They can rely on what the individual says about himself or on documentary evidence he provides as to who and what he is. If they know, or know of, the individual by virtue of experience prior to the interaction, they can rely on assumptions as to the persistence and generality of psychological traits as a means of predicting his present and future behavior. However, during the period in which the indi vidual is in the immediate presence of the others, few events may occur which directly provide the others with the conclusive information they will need if they are to direct wisely their own activity . Many crucial facts lie beyond the time and place of interaction or lie concealed within it. For example, the “true” or “real” attitudes, beliefs, and emotions of the individual can be ascertained only indirectly , through his avowals or through what appears to be involuntary expressive behavior. Similarly , if the individual offers the others a product or service, they will often find that during the interaction there will be no time and place immediately available for eating the pudding that the proof can be found in. They will be forced to accept some events as con ventional or natural signs of something not directly available to the senses. In Ichheiser ’s terms, 1 the individual will have to act so that he intentionally or unintentionally expresses himself, and the others will in turn have to be impressed in some way by him.…
33,615 citations
TL;DR: Turn-taking is used for the ordering of moves in games, for allocating political office, for regulating traffic at intersections, for the servicing of customers at business establishments, and for talking in interviews, meetings, debates, ceremonies, conversations.
Abstract: Publisher Summary Turn taking is used for the ordering of moves in games, for allocating political office, for regulating traffic at intersections, for the servicing of customers at business establishments, and for talking in interviews, meetings, debates, ceremonies, conversations. This chapter discusses the turn-taking system for conversation. On the basis of research using audio recordings of naturally occurring conversations, the chapter highlights the organization of turn taking for conversation and extracts some of the interest that organization has. The turn-taking system for conversation can be described in terms of two components and a set of rules. These two components are turn-constructional component and turn-constructional component. Turn-allocational techniques are distributed into two groups: (1) those in which next turn is allocated by current speaker selecting a next speaker and (2) those in which next turn is allocated by self-selection. The turn-taking rule-set provides for the localization of gap and overlap possibilities at transition-relevance places and their immediate environment, cleansing the rest of a turn's space of systematic bases for their possibility.
10,944 citations
01 Dec 1992
TL;DR: A study of shared editor use is discussed which suggests that awareness information provided and exploited passively through the shared workspace, allows users to move smoothly between close and loose collaboration, and to assign and coordinate work dynamically.
Abstract: Awareness of individual and group activities is critical to successful collaboration and is commonly supported in CSCW systems by active, information generation mechanisms separate from the shared workspace. These mechanisms pena~ise information providers, presuppose relevance to the recipient, and make access difficult, We discuss a study of shared editor use which suggests that awareness information provided and exploited passively through the shared workspace, allows users to move smoothly between close and loose collaboration, and to assign and coordinate work dynamically. Passive awareness mechanisms promise effective support for collaboration requiring this sort of behaviour, whilst avoiding problems with active approaches.
2,619 citations
Book•
01 Jan 1973
2,471 citations
01 Feb 2004
TL;DR: This paper suggests that the representational stance implied by conventional interpretations of “context” misinterprets the role of context in everyday human activity, and proposes an alternative model that suggests different directions for design.
Abstract: The emergence of ubiquitous computing as a new design paradigm poses significant challenges for human-computer interaction (HCI) and interaction design. Traditionally, HCI has taken place within a constrained and well-understood domain of experience—single users sitting at desks and interacting with conventionally-designed computers employing screens, keyboards and mice for interaction. New opportunities have engendered considerable interest in “context-aware computing”—computational systems that can sense and respond to aspects of the settings in which they are used. However, considerable confusion surrounds the notion of “context”—what it means, what it includes and what role it plays in interactive systems. This paper suggests that the representational stance implied by conventional interpretations of “context” misinterprets the role of context in everyday human activity, and proposes an alternative model that suggests different directions for design.
1,557 citations
"ContextContacts: re-designing Smart..." refers background in this paper
...This view that comes close to the interactional view of context [12] has inspired us to provide as many...
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