Measuring ego-centered social networks on the web: Questionnaire design issues

2008 ◽  
Vol 30 (3) ◽  
pp. 213-222 ◽  
Author(s):  
Vasja Vehovar ◽  
Katja Lozar Manfreda ◽  
Gasper Koren ◽  
Valentina Hlebec
Author(s):  
Federico Bergenti ◽  
Agostino Poggi ◽  
Michele Tomaiuolo

Social networking sites have deeply changed the face of the web in the last years. Although the current approach to build social networking systems is to create huge centralized systems owned by a single company. Such a strategy has many drawbacks (e.g., lack of privacy, lack of anonymity, risks of censorship, and operating costs). Therefore, a decentralized architecture may offer several advantages, but it may involve some security and design issues that are not present in traditional social networks. This chapter has the goal of introducing social networks and how they can take advantages of a decentralized architecture and how the use of multi-agent technologies help to cope with its security and design issues and, in addition, to support the creation of innovative services for its users.


Author(s):  
Federico Bergenti ◽  
Agostino Poggi ◽  
Michele Tomaiuolo

Social networking sites have deeply changed the face of the web in the last years. Although the current approach to build social networking systems is to create huge centralized systems owned by a single company, such strategy has many drawbacks, e.g., lack of privacy, lack of anonymity, risks of censorship and operating costs. Therefore, a decentralized architecture may offer several advantages, but it may involve some security and design issues that are not present in traditional social networks. This chapter has the goal of introducing social networks and how they can take advantages of a decentralized architecture and how the use of multi agent technologies help to cope with its security and design issues and, in addition, to support the creation of innovative services for its users.


Computer ◽  
2002 ◽  
Vol 35 (11) ◽  
pp. 32-36 ◽  
Author(s):  
R. Kumar ◽  
P. Ragbavan ◽  
S. Rajagopalan ◽  
A. Tomkins
Keyword(s):  

Author(s):  
Letícia Seixas Pereira ◽  
João Guerreiro ◽  
André Rodrigues ◽  
André Santos ◽  
João Vicente ◽  
...  

Image description has been a recurrent topic on web accessibility over the years. With the increased use of social networks, this discussion is even more relevant. Social networks are responsible for a considerable part of the images available on the web. In this context, users are not only consuming visual content but also creating it. Due to this shared responsibility of providing accessible content, major platforms must go beyond accessible interfaces. Additional resources must also be available to support users in creating accessible content. Although many of today's services already support accessible media content authoring, current efforts still fail to properly integrate and guide their users through the authoring process. One of the consequences is that many users are still unaware of what an image description is, how to provide it, and why it is necessary. We present SONAAR, a project that aims to improve the accessibility of user-generated content on social networks. Our approach is to support the authoring and consumption of accessible social media content. Our prototypes currently focus on Twitter and Facebook and are available as an Android application and as a Chrome extension.


2018 ◽  
Vol 7 (8) ◽  
pp. 296
Author(s):  
Shota Asukai ◽  
Kayoko Yamamoto

The present study aimed to design, develop, operate, and evaluate a recommendation system for meeting places targeting groups of two or more people during events. The system was designed and developed by integrating an accessibility database, as well as a recommendation system, and linking with Google Maps and social networking services (SNSs, Twitter and LINE). Additionally, the system was operated for 5 weeks with people mainly in the Tokyo metropolitan area, with Japan as the target, and the total number of users was 59. Based on the results of the web questionnaire survey, it was made evident that the system is useful for groups when meeting up, and the entry function for the nearest station to one’s home, as well as the recommendation function for meet-up stations, which was the original functions of the system, received generally good reviews. From the results of access analysis of the users’ log data, it was made evident that the system was used regardless of the type of device, just as the system was designed for, and that the system was used in harmony with the aim of the present study, which is to recommend meet-up stations for groups.


2020 ◽  
Author(s):  
Susanne Kelfve ◽  
Marie Kivi ◽  
Boo Johansson ◽  
Magnus Lindwall

Abstract Background: Web-surveys are increasingly used in population studies. Yet, web-surveys targeting older individuals are still uncommon for various reasons. However, with younger cohorts approaching older age, the potentials for web-surveys among older people might be improved. In this study, we investigated response patterns in a web-survey targeting older adults and the potential importance of offering a paper questionnaire as an alternative to the web questionnaire. Methods: We analyzed data from three waves of a retirement study, in which a web-push methodology was used and a paper questionnaire was offered as an alternative to the web questionnaire in the last reminder. We mapped the response patterns, compared web- and paper respondents and compared different key outcomes resulting from the sample with and without the paper respondents, both at baseline and after two follow-ups.Results: Paper-respondents, that is, those that did not answer until they got a paper questionnaire with the last reminder, were more likely to be female, retired, single, and to report a lower level of education, higher levels of depression and lower self-reported health, compared to web-respondents. The association between retirement status and depression was only present among web-respondents. The differences between web and paper respondents were stronger in the longitudinal sample (after two follow-ups) than at baseline.Conclusions: We conclude that a web-survey might be a feasible and good alternative in surveys targeting people in the retirement age range. However, without offering a paper questionnaire, a small but important group will likely be missing with potential biased estimates as the result.


2015 ◽  
Vol 7 (2) ◽  
pp. 3-14 ◽  
Author(s):  
Giovanni Bonaiuti

Abstract Networking is not only essential for success in academia, but it should also be seen as a natural component of the scholarly profession. Research is typically not a purely individualistic enterprise. Academic social network sites give researchers the ability to publicise their research outputs and connect with each other. This work aims to investigate the use done by Italian scholars of 11/D2 scientific field. The picture presented shows a realistic insight into the Italian situation, although since the phenomenon is in rapid evolution results are not stable and generalizable.


Author(s):  
Tania Al. Kerkiri ◽  
Dimitris Konetas

The interactive tools like blogs, wikis, et cetera, known under the commonly acceptable name Web2.0, led to a new generation of Internet services and applications such as social networks, recommendation systems, reputation systems, et cetera, allowing for public participation in the formation of the content of the Web, and at the same time fueling an explosion of information. This information is a widely available intellectual capital. Due to the opportunities that arise from the exploitation of this information, this chapter will i) present the rationale under which these systems function, ii) summarize and apply in an indicative manner the mathematical models used to handle this information, iii) propose a general architecture of these systems and iv) describe a hybrid multifaceted algorithm that exploits the capabilities arising from this information towards a personalized inference for a specific user. The result of this work is an indication of the capabilities that arise from further exploitation of these systems.


Author(s):  
Elena Roglia ◽  
Rosa Meo

Next is a presentation of the complete system architecture, followed by a discussion of the details of the various services. Amongst these services, management and simulation of tactical planning, management of data and streaming video, the system also presents a service for the annotation of the interested spatial objects. Annotation deploys the web services (Alonso, Casati, Kuno, & Machiraju, 2004) exported by OpenStreetMap (OpenStreetMap) with the purpose to exploit the on-line information sources continuously updated by the social networks communities.


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