The network organisation of consumer complaints

Interaction between consumers and companies can create conflict. When a consensus is unreachable there are legal authorities to resolve the case. This letter is a study of data from the Brazilian Department of Justice from which we build a bipartite network of categories of complaints linked to the companies receiving those complaints. We find the complaint categories organised in an hierarchical way where companies only get complaints of lower degree if they already got complaints of higher degree. The fraction of resolved complaints for a company appears to be nearly independent on the equity of the company but is positively correlated with the total number of complaints received. We construct feature vectors based on the edge-weight - the weight of an edge represents the times complaints of a category have been filed against that company - and use these vectors to study the similarity between the categories of complaints. From this analysis, we obtain trees mapping the hierarchical organisation of the complaints. We also apply principal component analysis to the set of feature vectors concluding that a reduction of the dimensionality of these from 8827 to 27 gives an optimal hierarchical representation.Comment: 9 pages, 6 figures, 1 tabl

Flow Motifs Reveal Limitations of the Static Framework to Represent Human interactions

Networks are commonly used to define underlying interaction structures where infections, information, or other quantities may spread. Although the standard approach has been to aggregate all links into a static structure, some studies suggest that the time order in which the links are established may alter the dynamics of spreading. In this paper, we study the impact of the time ordering in the limits of flow on various empirical temporal networks. By using a random walk dynamics, we estimate the flow on links and convert the original undirected network (temporal and static) into a directed flow network. We then introduce the concept of flow motifs and quantify the divergence in the representativity of motifs when using the temporal and static frameworks. We find that the regularity of contacts and persistence of vertices (common in email communication and face-to-face interactions) result on little differences in the limits of flow for both frameworks. On the other hand, in the case of communication within a dating site (and of a sexual network), the flow between vertices changes significantly in the temporal framework such that the static approximation poorly represents the structure of contacts. We have also observed that cliques with 3 and 4 vertices con- taining only low-flow links are more represented than the same cliques with all high-flow links. The representativity of these low-flow cliques is higher in the temporal framework. Our results suggest that the flow between vertices connected in cliques depend on the topological context in which they are placed and in the time sequence in which the links are established. The structure of the clique alone does not completely characterize the potential of flow between the vertices

Letter from Luis Javier Correa Suarez: Regional Leader of SINALTRAINAL Assassinated

This document is part of a digital collection provided by the Martin P. Catherwood Library, ILR School, Cornell University, pertaining to the effects of globalization on the workplace worldwide. Special emphasis is placed on labor rights, working conditions, labor market changes, and union organizing.ILRF_Letter_from_Luis_Javier_Correa_Suarez__Regional_Leader_of_SINALTRAINAL_Assassinated.pdf: 52 downloads, before Oct. 1, 2020

Co-Teaching As a Vehicle To Inclusion In a Diverse Suburban Middle School: A Case Study

Many school districts across the United States have adopted, or are considering adopting, full inclusion to meet academic and social-emotional needs of increasingly diverse student populations. Co-teaching has become a popular approach for districts committed to inclusion. This study is about a Midwestern school district which more than 10 years ago committed itself to inclusion and co-teaching. The primary research question was: How do we make co-teaching more effective in the Fairview School District? A survey was sent to 120 co-teachers from three middle schools about their experiences with co-teaching in the areas of sharing responsibilities, co-teaching relationships, planning time, administrative support, and professional development. Seventeen teachers from across the three schools volunteered to be interviewed in small groups to discuss the results of the survey. Themes which emerged from the survey and interview data were: allocation and use of planning time, the importance of co-teacher relationships, and a concern about parity in roles and responsibilities in the co-teaching partnership. Recommendations to address the primary research question include: a) performance of a needs assessment of co-teaching practices to design professional development tailored to the needs of teachers; b) creation of a co-teaching reference and resource guide, clearly outlining co-teaching expectations commitments, roles and responsibilities, best co-teaching practices, scheduling, honoring planning time, and administrative support; and c) formation of a co-teaching taskforce made up of representative stakeholders to assemble the resource guide, conduct and analyze the needs assessment, mentor co-teaching teams, and drive future improvement in co-teaching practices

Healthy aging : Free time of adults

El trabajo que aquí se presenta surge de la necesidad de conceptualizar y profundizar sobre el uso productivo del tiempo libre de las personas adultas mayores. Se llevará a cabo una aproximación teórica sobre las diferentes concepciones de tiempo libre y ocio como dimensiones interdisciplinarias que involucran elementos referidos al entorno en donde personas y comunidades buscan integrarse en un tiempo y espacio determinadoThe work presented here stems from the need to conceptualize and investigate the productive use of older adults-free time. So how will carry out a theoretical approach on the different conceptions of free time and leisure as interdisciplinary dimensions involving elements referred to the environment where people and communities seek to integrate in a time and space given. Leisure time is used performing different types of activities, from the picking, hunting and fishing in the past, to the use of technology today; such is the use of ICT (technology, information and communication). In this respect the elderly is faced new challenges for which society must generate attitudinal changes and cultural. Access to social welfare programs, should facilitate the participation of all older adults, thus guaranteeing the promotion of healthy habits in their free time. The technological advances, in preventive medicine, for example, are producing not only increase in life expectancy, but also more likely to live better and better conditions (Fernandez Lópiz 1996.) If we consider the above by Lópiz, currently, not only older adults live longer, they also make it better. It is required then an integrated effort of all those professionals who are involved with the population of older adults. Doctors, gerontologists, educators, psychologists, social workers, professional of physical education, sociologists, among othersFil: Correa, José Luis. Universidad de la República. Instituto Superior de Educación Física