scholarly journals Executive Summary: Lacomo: A Layer to Develop Collaborative Mobile Applications

2019 ◽  
Author(s):  
Mauro Carlos Pichiliani ◽  
Prasun Dewan ◽  
Celso Massaki Hirata
Keyword(s):  
Mobile Applications ◽  
Completion Time ◽  
Ad Hoc ◽  
Executive Summary ◽  
Single User ◽  
Screen Sharing

Nowadays, there is little support for developers to transform single user applications to collaborative ones in the mobile domain. We present Lacomo, a new software layer to build collaborative mobile applications with accessibility, screen sharing, and application rewriting technologies that reduce costs to prototype collaboration features, thereby increasing the range of supported applications without deep application knowledge. We compare it to an ad hoc approach. Users using Lacomo performed a testing task faster, with less effort and errors at a higher completion time.

scholarly journals A Case Study of Casework Tinkering

2018 ◽  
Vol 5 (2) ◽  
pp. 57-71 ◽  
Author(s):  
Maj Nygaard-Christensen ◽  
Bagga Bjerge ◽  
Jeppe Oute
Keyword(s):  
Ad Hoc ◽  
Welfare System ◽  
Care Work ◽  
Short Term ◽  
Unique Case ◽  
Complex Problems ◽  
Single User ◽  
To Receive

Citizens with complex problems are often in touch with different welfare services and administrative systems in order to receive the help, they need. Sometimes these services overlap and sometimes they conflict. The lack of ready-made services to match the complex, multiple, and often shifting needs of citizens with complex problems presents a challenge to caseworkers in the welfare system. In this article, we zoom in on the management of a single user´s case, in order to examine in detail how caseworkers nevertheless make casework ‘work’. We employ the concept of ‘tinkering’ to highlight the ad hoc and experimental way in which caseworkers work towards adjusting services to the unique case of such citizens. Tinkering has previously been used in studies of human-technology relations, among others in studies of care-work in the welfare system. In this paper, we employ the concept to capture and describe a style of working that, although not a formally recognized method, might be recognizable to many caseworkers in the welfare system. We show how tinkering involves the negotiation of three topics of concern, namely the availability of services, the potentials of services to be adjusted to the particular problems of the citizen, and finally, the potential for interpreting these problems and the citizen’s needs in a way that they match the service. We further demonstrate that casework tinkering involves both short-term and long-term negotiation of services. Firstly, tinkering is involved in the continual adjustment and tailoring of services to the immediate needs of the citizen, but secondly, it also speaks to a more proactive process of working towards a more long-term goal.

scholarly journals Hypotheses on the origin and transmission of BSE  

2001 ◽  
Vol 46 (No. 11–12) ◽  
pp. 329-332
Author(s):  
K. Hruška
Keyword(s):  
Consumer Protection ◽  
Full Text ◽  
Ad Hoc ◽  
Web Page ◽  
Executive Summary ◽  
Directorate General ◽  
The Web

EC Health & Consumer Protection Directorate-General recently published an important document based on papers and reviews discussed by members of TSE/BSE ad hoc group. In this review the Executive Summary and Tables of Contents of Part I and II are printed with permission. For full text and references see the web page mentioned in references.

Usability Evaluation of Social Media Web Sites and Applications via Eye-Tracking Method

2017 ◽  
pp. 85-112
Author(s):  
Duygu Mutlu-Bayraktar
Keyword(s):  
Social Media ◽  
Eye Tracking ◽  
Web Sites ◽  
Mobile Applications ◽  
Completion Time ◽  
Usability Evaluation ◽  
Tracking Data ◽  
Tracking Method ◽  
Tracking Movements ◽  
Media Applications

This chapter describes usability studies of website-based and mobile application-based social media sites. In the study including 10 university students, the completion time of assigned tasks were measured along with click numbers and completion situations. These measures were analyzed. Data obtained from eye tracking movements was analyzed, and the results were evaluated. According to the results, the users can complete most of the tasks, but completion time varied. The participants had difficulties completing settings menu tasks except menus previously used in social media. When eye tracking results were examined, it was revealed that they mostly focused on the left side of websites and mobile applications. The participants stated that mobile applications were more useful than websites. According to eye-tracking data obtained in the study and the users' opinions, mobile social media applications were more functional than their websites.

A Distributed Autonomous Approach to Developing a Disaster Evacuation Assist System

2015 ◽  
Vol 10 (6) ◽  
pp. 1081-1090 ◽  
Author(s):  
Yasuki Iizuka ◽  
◽  
Katsuya Kinoshita ◽  
Kayo Iizuka ◽  
◽  
...  
Keyword(s):  
Completion Time ◽  
Optimization Problem ◽  
Ad Hoc ◽  
The Other ◽  
Constraint Optimization ◽  
Distributed Constraint Optimization ◽  
Emergency Situations ◽  
Agent Simulation ◽  
Multi Agent ◽  
Distributed Constraint Optimization Problem

In times of disaster, or other emergency situations, it is essential for people to be evacuated in a smooth manner. Evacuation must be performed promptly and safely. It is necessary to avoid generating a secondary disaster at the time of evacuation. However, this is not easy to realize, because people often tend to panic when faced with disaster, crowding the evacuation passageways of buildings. On the other hand, people do not attempt to evacuate themselves from danger when the normalcy bias has occurred. Therefore, evacuation guidance is very important. However, it is impossible to guide all evacuees through authorities such as disaster countermeasure offices. To deal with this issue, the authors propose a system that provides optimal evacuation guidance autonomously without central server. The system works on the mobile devices of evacuees, performs distributed calculations using the framework of the distributed constraint optimization problem on ad-hoc communication, and does not need a central server. In the experiment using multi-agent simulation, for the case where the evacuees can receive evacuation guidance from this system, the evacuation completion time decreased. This paper presents an overview and the evaluation results of the prototype of the disaster evacuation assistance system.

scholarly journals Performance evaluation of an IEEE 802.11b ad-hoc network

2004 ◽  
Vol 17 (1) ◽  
pp. 53-68
Author(s):  
Srdjan Krco ◽  
Marina Dupcinov ◽  
Sean Murphy
Keyword(s):  
Routing Protocol ◽  
Mobile Applications ◽  
Ad Hoc Network ◽  
Network Performance ◽  
Ad Hoc ◽  
Ieee 802.11B ◽  
Low Bit Rate ◽  
Considerable Impact ◽  
Distance Vector ◽  
Hoc Networks

The performance of an IEEE 802.11b ad-hoc network that uses the AODV (Ad hoc On-demand Distance Vector) routing protocol is evaluated. One significant issue relating to the behavior of WLAN cards that has considerable impact on AODV performance was observed during the initial testing of the system and it is discussed and a solution proposed. Some aspects of the network performance are then assessed for several scenarios with low mobility. Route discovery latency results indicate that it is possible for mobile applications to operate reasonably well over ad-hoc networks in light to moderate traffic. UDP throughput results indicate that such networks could support tens of users using low-bit rate applications or possibly higher bit rates if applications generate data in bursts. Finally, some problems with TCP operating in this context were observed.

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