scholarly journals An activity window model for social interaction structure on Twitter

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 685-691
Author(s):  
Jun Zhang ◽  
Haoxiang Xia ◽  
Le-zhi Wang ◽  
Peng Li ◽  
Benazir Quadir

Abstract The development of online social environments has changed the manner of social interaction and communication, which are driven by individual human actions. Thus temporal variations in interaction networks are deeply impacted by the temporal dimension of human activity. In this paper, we address this issue through a detailed analysis on the retweets and comments of 550,000 Twitter users. We propose a temporal network model to represent the interaction network on Twitter, in which each node contains an activity window and the emergence of the edges between nodes are dependent on it. Specifically, the activity window is defined as the backtracking length from the message flow posted by the user’s friend, which represents the user’s social ability. It complies with a power-law distribution with an exponential cut-off. The interaction network is sparser and more clustered than the followee-follower network, in which the interaction stability and burstiness fluctuate with the activity window or with the degree to which the two users are involved in the communication. Finally, the effect of activity window on the aggregating degrees of the interaction network is examined.

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kana Okada ◽  
Kayo Nishizawa ◽  
Tomoko Kobayashi ◽  
Shogo Sakata ◽  
Kouichi Hashimoto ◽  
...  

AbstractSocial behaviour is a complex construct that is reported to include several components of social approach, interaction and recognition memory. Alzheimer’s disease (AD) is mainly characterized by progressive dementia and is accompanied by cognitive impairments, including a decline in social ability. The cholinergic system is a potential constituent for the neural mechanisms underlying social behaviour, and impaired social ability in AD may have a cholinergic basis. However, the involvement of cholinergic function in social behaviour has not yet been fully understood. Here, we performed a selective elimination of cholinergic cell groups in the basal forebrain in mice to examine the role of cholinergic function in social interaction and social recognition memory by using the three-chamber test. Elimination of cholinergic neurons in the medial septum (MS) and vertical diagonal band of Broca (vDB) caused impairment in social interaction, whereas ablating cholinergic neurons in the nucleus basalis magnocellularis (NBM) impaired social recognition memory. These impairments were restored by treatment with cholinesterase inhibitors, leading to cholinergic system activation. Our findings indicate distinct roles of MS/vDB and NBM cholinergic neurons in social interaction and social recognition memory, suggesting that cholinergic dysfunction may explain social ability deficits associated with AD symptoms.


Author(s):  
Arif Mohaimin Sadri ◽  
Samiul Hasan ◽  
Satish V. Ukkusuri ◽  
Juan Esteban Suarez Lopez

2002 ◽  
Vol 35 (1) ◽  
pp. 85-103 ◽  
Author(s):  
Ting Gong

Echoing changing social environments, corruption has grown in sophistication and complexity. This paper focuses on the phenomenon of collective corruption. Collective corruption, a distinctive form of social interaction among people dominated by individual calculations and unorganized interests, takes place when collaboration becomes a powerful, necessary weapon in pursuing private gains. The danger of collusion in corrupt ventures is that as corruption gets well planned and skillfully coordinated in its collective form, it may become less forthright and therefore more difficult to detect, or more overt and increasingly legitimized as an appropriate form of economic intercourse.


2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Mirnawati A. Mauludu

ABSTRACTThis research aims to study the impact of physical distancing on the youth's social abilities. This research using a qualitative approach by observation, interviews, and documentation to data collects. This study involved those who participated in youth organizations (PMRD) in Sindulang Satu Lingkungan I Village, Tuminting District, Manado City. The results show that the physical distancing on the youth's social abilities is that they do not get obstacles to communicating and educating the public regarding Covid-19 by utilizing social media. In terms of social interaction, there is still a lack of youth interest in participating in youth organizations (PRMD), whether there is physical distancing or not. Regarding youth socialization (PRMD), it has an active role in minimizing the spread of Covid-19 by distributing free masks to the public and collaborating with the Ansor Youth to spray disinfectant liquid in the Darussalam Sindulang I Mosque environment.Keywords: Impact, Physical Distancing, Covid-19, Social Ability, Youth. ABSTRAKPenelitian ini bertujuan untuk mengetahui dampak physical distancing terhadap kemampuan sosial pemuda. Penelitian ini menggunakan pendekatan kualitatif dengan melakukan observasi, wawancara dan dokumentasi. Penelitian ini melibatkan pemuda yang ikut serta dalam organisasi kepemudaan (PMRD) di Kelurahan Sindulang Satu Lingkungan I Kecamatan Tuminting Kota Manado. Hasil dari penelitian ini menunjukkan bahwa physical distancing tidak menghalangi kemampuan sosial pemuda di Kelurahan Sindulang Satu Lingkungan I Kecamatan Tuminting Kota Manado untuk berkomunikasi dan mengedukasi masyarakat terkait Covid-19 dengan memanfaatkan media sosial. Dalam hal interaksi sosial masih kurangnya minat pemuda untuk ikut serta dalam organisasi kepemudaan (PRMD) baik ada atau tidaknya pemberlakuan physical distancing. Terkait dengan sosialisasi pemuda (PRMD) sangat berperan aktif dalam meminimalisir penyebaran Covid-19 dengan membagikan masker gratis kepada masyarakat dan bekerjasama dengan Pemuda Ansor untuk penyemprotan cairan desinfektan di lingkungan Masjid Darussalam Sindulang I.Kata Kunci: Dampak, Physical Distancing, Covid-19, Kemampuan Sosial, Pemuda.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Federico Pianzola ◽  
Maurizio Toccu ◽  
Marco Viviani

PurposeThe purpose of this article is to explore how participants with different motivations (educational or leisure), familiarity with the medium (newbies and active Twitter users), and participating instructions respond to a highly structured digital social reading (DSR) activity in terms of intensity of engagement and social interaction.Design/methodology/approachA case study involving students and teachers of 211 Italian high school classes and 242 other Twitter users, who generated a total of 18,962 tweets commenting on a literary text, was conducted. The authors performed both a quantitative analysis focusing on the number of tweets/retweets generated by participants and a network analysis exploiting the study of interactions between them. The authors also classified the tweets with respect to their originality, by using both automated text reuse detection approaches and manual categorization, to identify quotations, paraphrases and other forms of reader response.FindingsThe decoupling (both in space and time) of text read (in class) and comments (on Twitter) likely led users to mainly share text excerpts rather than original personal reactions to the story. There was almost no interaction outside the classroom, neither with other students nor with generic Twitter users, characterizing this project as a shared experience of “audiencing” a media event. The intensity of social interactions is more related to the breadth of the audience reached by the user-generated content and to a strong retweeting activity. In general, better familiarity with digital (social) media is related to an increase in the level of social interaction.Originality/valueThe authors analyzed one of the largest educational social reading projects ever realized, contributing to the still scarce empirical research about DSR. The authors employed state-of-the-art automated text reuse detection to classify reader response.


Author(s):  
John Z. Elias

We, in virtue of our sociability and plasticity, are especially open to altering and developing our capacities and abilities, thereby expanding the scope of available affordances. The distinctively dynamic and extensive nature of abilities for human beings, however, raises questions concerning the ontology of affordances, given their relativity to abilities, their being relative to abilities. These questions are particularly pressing since much of the power of the concept comes from the claim that affordances are real, that they exist in some sense. Resolution of these issues, I suggest, involves taking the temporal dimension of abilities and affordances seriously, particularly in terms of interaction across multiple temporal scales. Such a temporal perspective encompasses the modulating role of motivation, as well as questions concerning the presence and salience of affordances. I end by addressing abilities as they extend into, and are extended by, social interaction and coordination, and introduce the notion of joint affordances specifically, in contrast to the sociality of affordances more generally.


Author(s):  
Franziska Martini

Certain varieties of feminism have become more popular, and so have anti-feminist reactions to it with both sides competing for visibility. However, the (gendered) interplay between feminist and anti-feminist counterpublics is still uncharted. At the same time, research in the field of feminist media studies is beginning to address questions of power inequalities $2 feminist publics on social media platforms. This study sheds light on the networked structure of the German-language #MeToo protest on Twitter in order to reveal who succeeded in becoming visible and influential in this digital protest and in order to show differences in networking practices among those involved. Analyzing the Twitter interaction network around #MeToo over a period of three month, we find that – as expected – this network consists of some highly connected hubs and a majority of nodes with only few connections. The most central nodes, only 1.1 percent of the Twitter users involved, account for 35 percent of interactions within the network. Applying qualitative and quantitative content analyses, this study shows that Twitter accounts of traditional news media play a central role in the #MeToo network from the very beginning, indicating that protest networks are less equal and horizontal than often assumed. At the same time, k-core decomposition reveals that most Twitter users in the network’s core published mostly racist and anti-feminist content, indicating that few but very loud and well-connected voices used the #MeToo protest to strategically mobilize against migration in Germany and Austria.


Author(s):  
Chris Brunsdon ◽  
Jonathan Corcoran

Whilst some land uses are highly criminogenic, others remain largely free of crime. This patterning is a reflection of the types and timing of daily activities that take place in a given land use and the opportunities that this presents for crime. While the criminology literature has developed a rigorous understanding of geographic component of crime, relatively less emphasis has been placed on the temporal dimension. Here, we address this through applying a technique to examine micro-temporal variations in crime at places. This technique adopts a factor approach to model hourly counts of crime across seven land use types (commercial, residential, parkland, agricultural, medical/hospital, industrial and education) to unveil the number and distribution of crime signals across a 24-hour period along with how these signals mix across each land use type. Results reveal clear and distinct differences between crime type and land use, highlighting the diurnal nature of crime patterns and speak to the literature on risky places and risky times. The utility of our approach lies in its capacity to delineate common temporal rhythms and how these rhythms are shared across different land use types.


Author(s):  
Zhiwen Yu ◽  
Yunji Liang ◽  
Yue Yang ◽  
Bin Guo

With the popularity of smart phones, the warm embrace of social networking services, and the perfection of wireless communication, mobile social networking has become a hot research topic. The characteristics of mobile devices and requirements of services in social environments pose challenges to the construction of a social platform. In this chapter, the authors elaborate a flexible system architecture based on the service-oriented specification to support social interaction in a university campus. For the client side, they designed a mobile middleware to collect social contexts such as proximity, acceleration, and cell phone logs, etc. The server backend aggregates such contexts, analyzes social connections among users, and provides social services to facilitate social interaction. A prototype of mobile social networking system is deployed on campus, and several applications are implemented to demonstrate the effectiveness of the proposed architecture. Experiments were carried out to evaluate the performance (in terms of response time and energy consumption) of our system. A user study was also conducted to investigate user acceptance of our prototype. The experimental results show that the proposed architecture provides real-time response to users. Furthermore, the user study demonstrates that the applications are useful to enhance social interaction in campus environments.


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