In this article we have shown that the distributions of ksi satisfy an exponential law for real networks while the distributions of ksi for random networks are bell-shaped and closer to the normal distribution. The ksi distributions for Barabasi-Albert and Watts-Strogatz networks are similar to the ksi distributions for random networks (bell-shaped) for most parameters, but when these parameters become small enough, the Barabasi-Albert and Watts-Strogatz networks become more realistic with respect to the ksi distributions.
Spearheaded by retail traders on the website reddit, the GameStop short squeeze of early 2021 shows that social media embeds information that correlates with market movements. This paper seeks to examine this relationship by using daily frequencies of classified comments and buzzwords as additional factors in a Fama-French three factor model. Comments are classified using an unsupervised clustering method, while past studies have used pretrained models that are not specific to the domains being studied.
The need to understand the factors that come to bear in the financial inclusion on the indigenous peoples in Nigeria necessitated the study. The need is pressing because scholars have established that the financial inclusion is crucial to the socio-cultural and economic development of the indigenous peoples.
Fanfiction.net provides an informal learning space for young writers through distributed mentoring, networked giving and receiving of feedback. In this paper, we quantify the cumulative effect of feedback on lexical diversity for 1.5 million authors.
Studies in the systems Cs–Na–Cu–Si and Cs–Na–Zn–Si yielded the novel clathrates Cs8Na16(Cu,Si)136and Cs8Na16(Zn,Si)136, both with the cubic type‐II structure [space groupFd3m(no. 227), Pearson symbolcF160]. The structures of the title compounds were established from single‐crystal X‐ray diffraction methods, confirming the complete ordering of the Cs and Na guest atoms. The framework‐building Si atoms are found to be randomly substituted by Cu atoms on framework site 96g, exclusively. In the structure of Cs8Na16(Zn,Si)136, the refinements indicate that the Zn and Si atoms co‐occupy two of the three framework sites with notable preference for site 96gover site 32e. The corresponding refined compositions and unit cell parameters are as follows: Cs8Na16Cu3.8Si132.2(1)[a= 14.7583(15) Å]; Cs8Na16Zn6.9Si129.1(1)[a= 14.7682(5) Å], respectively. The type‐II clathrates can be obtained only from experiments employing both Na and Cs, whereas work in the ternary Cs‐Cu‐Si, Cs‐Zn‐Si, Na‐Cu‐Si, and Na‐Zn‐Si systems failed to yield any clathrate phases. At the same conditions, exploratory studies in the K‐Zn‐Si and Rb‐Zn‐Si systems provided evidence that type‐I clathrates are favored.
A concept of fourth generation social network is described as one that, built on the features of augmented reality (AR), is able to implement an enriched layer of digital information that displays in People Augmented Reality (PAR) devices data shared by users in social networks. This PAR layer is accessed by the users in their devices through camera effects when targeting with a mobile phone to a user holding a mobile device with AGPS and with a profile in social media. The social network of fourth generation will be a combination between Facebook and Pokemon Go.
Mieczysław A. Kłopotek, Sławomir T. Wierzchom, Robert A. Kłopotek
et al.
In a former paper we simplified the proof of a theorem on personalized random walk that is fundamental to graph nodes clustering and generalized it to bipartite graphs for a specific case where the proobability of random jump was proprtional to the number of links of "personally prefereed" nodes. In this paper we turn to the more complex issue of graphs in which the random jump follows uniform distribution.
We note that building a magnetic Laplacian from the Markov transition matrix, rather than the graph adjacency matrix, yields several benefits for the magnetic eigenmaps algorithm. The two largest benefits are that the embedding becomes more stable as a function of the rotation parameter g, and the principal eigenvector of the magnetic Laplacian now converges to the page rank of the network as a function of diffusion time. We show empirically that this normalization improves the phase and real/imaginary embeddings of the low-frequency eigenvectors of the magnetic Laplacian.
This paper describes first experiments measuring organizational consciousness by comparing six "honest signals" of interpersonal communication within organizations with organizational metrics of performance.
Sipra Bihani, Michael Hartman, Florian Sobiegalla
et al.
This paper compares two biohacking groups, Bulletproof Executive and DIYbio, whose distinct goals result in differences in social network structures, activities and entry points.
Wikipedia introduced a new social function "wiki-thanks". "Wiki-thanks" enable editors to send thanks to other editors' contributions. In this paper, we aim to investigate this new social tool from different cultural perspectives. To achieve this goal, we analyze "wiki-thanks" log events and compared the English, German, Spanish, Chinese, Japanese, Korean, and Finish language Wikipedias.
Ensembles of networks are used as null-models to discriminate network structures. We present an efficient algorithm, based on the maximal entropy method to generate network ensembles defined by the degree sequence and the rich-club coefficient. The method is applicable for unweighted, undirected networks. The ensembles are used to generate correlated and uncorrelated null--models of a real networks. These ensembles can be used to define the partition of a network into soft communities.
The friendship paradox is revisited by considering both local and global averages of friends. How the economics of attention affects the recruitment of friends is examined. Statistical implications of varying individual attentions are investigated and it is argued that this is one reason why the mean of friends is higher than the median in social networks. The distribution of friends skews to the right for two other reasons: (i) the presence of institutional nodes that increase the mean; and (ii) the dormancy of many of the nodes. The difference between friends and friends of friends is a measure of the structural information about the network.
Topological mapping of a large physical system on a graph, and its decomposition using universal measures is proposed. We find inherent limits to the potential for optimization of a given system and its approximate representations by motifs, and the ability to reconstruct the full system given approximate representations. The approximate representation of the system most suited for optimization may be different from that which most accurately describes the full system.
We study the locally-defined social capital metric of Palasek (2013) for determining individuals' prestige within an online social network. From it we derive an equivalent global measure by considering random walks over the network itself. This result inspires a novel expression quantifying the strategic desirability of a potential social connection. We show in silico that ideal social neighbors tend to satisfy a "big fish in a small pond" criterion and that the distribution of neighbor-desirability throughout a network is governed by anti-homophily.
We describe a methodology of rating the influence of a Twitter ac-count in this famous microblogging service. We then evaluate it over real ac-counts, under the belief that influence is not only a matter of quantity (amount of followers), but also a mixture of quality measures that reflect interaction, awareness, and visibility in the social sphere. The authors of this paper have created InfluenceTracker, a publicly available website where anyone can rate and compare the recent activity of any Twitter account.
This paper develops a generalization of the PageRank model of page centralities in the global webgraph of hyperlinks. The webgraph of adjacencies is generalized to a valued directed graph, and the scalar dampening coefficient for walks through the graph is relaxed to allow for heterogeneous values. A visitation count approach may be employed to apply the more general model, based on the number of visits to a page and the page's proportionate allocations of these visits to other nodes of the webgraph.
This paper presents the design and implementation of a social networking website for classifieds, called Serefind. We designed search interfaces with focus on security, privacy, usability, design, ranking, and communications. We deployed this site at the Johns Hopkins University, and the results show it can be used as a self-sustaining classifieds site for public or private communities.
In the paper different roles of users in social media, taking into consideration their strength of influence and different degrees of cooperativeness, are introduced. Such identified roles are used for the analysis of characteristics of groups of strongly connected entities. The different classes of groups, considering the distribution of roles of users belonging to them, are presented and discussed.
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 Indian atmosphere-ocean science community organised a field programme known as Continental Tropical Convergence Zone (CTCZ) during 2011 to understand the synoptic and sub-seasonal fluctuations of summer monsoon over India. One of the objectives of the programme was to understand the evolution of the large scale circulation in relation to synoptic & intra-seasonal fluctuations of the monsoon. The paper addresses the large scale fluctuations of Monsoon-2011. The Monsoon-2011 performed very close to the normal rainfall of the season. However, on the sub-seasonal scale its performance was good during June, became deficient during July and it recovered from the beginning of August to the end of September. The early part of the season was accompanied by near neutral La-Nina conditions. However, sea surface temperatures (SSTs) in the Equatorial Eastern Pacific Ocean shifted to below normal (La-Nina conditions) from August to the end of September. As the Gangetic Plain was swept by marine origin air stream in the lower troposphere, the aerosol load remained much below the normal during the entire season. The paper discusses different aspect of synoptic, sub-seasonal fluctuations of monsoon in relation to remote forcing of the SSTs in the Pacific and the local forcing of the Indian Ocean Dipole (IOD). Also the performance of the operational numerical weather prediction (NWP) models: European Centre for Medium-Range Weather Forecasts (ECMWF), Global Forecast System (GFS) and Weather Research and Forecasting (WRF) is discussed. Several areas of further research using CTCZ data are also suggested based on the performance of the Monsoon-2011.