Dynamic Group Recommendation Algorithm Based on Member Activity Level

The rapid development of social networks has led to an increased desire for group entertainment consumption, making the study of group recommender systems a hotspot. Existing group recommender systems focus too much on member preferences and ignore the impact of member activity level on recommendation results. To this end, a dynamic group recommendation algorithm based on the activity level of members is proposed. Firstly, the algorithm predicts the unknown preferences of members using a time-series-oriented rating prediction model. Secondly, considering the dynamic change of member activity level, the group profile is generated by designing a sliding time window to investigate the recent activity level of each member in the group at the recommended moment, and preference is aggregated based on the recent activity level of members. Finally, the group recommendations are generated based on the group profile. The experimental results show that the algorithm in this paper achieves a better recommendation result.

Phytochemical Screening, Spectrum Profile of Functional Groups, and Effervescent Formulation of Kepok Banana Peels Stem Extract

Kepok banana plants contain secondary metabolites such as tannins and flavonoids. Tannins and flavonoids have various properties for human health. Research has been carried out to identify secondary metabolite compounds (tannins, flavonoids, and saponins) by using the phytochemical screening method to see the functional group profile contained in the extract of kepok banana stem waste. Kepok banana stem waste was extracted in 96% ethanol, then evaporated and screened phytochemically. This extract was used to prepare effervescently. Screening results showed that tannin and flavonoids were identified by the appearance of the following color black-green and dark red, respectively. Meanwhile, saponins were negative because the foam formed had a height of 0.3 cm and did not meet the saponins' positive requirements (1-3 cm high foam and stable for 5 minutes). Identification of functional groups in the extract of kepok banana stem waste using Fourier-transform Infrared Spectroscopy (FTIR) showed that C-C stretching in the area 2927.24 cm-1, O-H stretching in the 3423.87 cm-1 area, C=O stretching in the 1648.87 cm-1 area. Also appeared bending CH2 in the region of 1421.45 cm-1, and C-C in the area of 1149.98 cm-1. The characteristics of three different formulas (A, B, and C) of effervescent have been investigated: the moisture content of 2.51%; 2.55%, and 2.52%, respectively. Then, flow rate of 8.81 g/s; 8.83 g/s; and 8.82 g/s, compressibility of 14.5%; 14.4%; and 14.5%, and a pH of 5.97; 5.98; and 5.97 respectively. All parameters are eligible.

Determinants of the Governance Performance of Producer Organizations: Case Study of Village Cotton Producers Cooperatives in Benin

Aims: This article aims to analyze the main factors that influence the performance of the governance of Producers' Organizations in the context of the Uniform Act of OHADA devoted to the Law on cooperative societies. Study Design: The case study is based on Village Cotton Producers Cooperatives (CVPCs). Governance performance of CVPCs referred to and has been measured through respectively quality of internal governance (administrative) and quality of services provided to members. Place and Duration of Study: The study has been carried out in the Department of Alibori, northern Benin Republic. Data collection period run from July to October 2019. Methodology: We included 242 CVPCs selected in the six municipalities in the Department of Alibori. Primary data relating to socio-economic characteristics (the size of the CVPC, the age, the proportion of women in group, profile of leaders), and governance parameters related to internal governance and the quality of services provided to members. Results: The results revealed that internal governance is generally poor and the quality of services provided to members is good. The proportion of women and the profile of leaders determine (bad) internal governance compared to good governance. The low profile of the leaders, the small size and the low proportion of women determine the quality of the services provided to members. The more the profile of leaders improves, the more likely it is to have good governance. On the other hand, the more the proportion of women in CVPCs increases, the more there is a chance of having bad internal governance rather than good governance. Conclusion: These results suggest that the lower or medium the profile of leaders, the poorer or average internal governance and services provided to members will be. A better combination of all these determinants will improve both the quality of internal governance and the services provided to members in a CVPC.

Recepção, Circulação e Disciplinarização da Gestalt-Terapia no Mato Grosso do Sul

Gestalt Therapy has been growing and developing since its arrival in the 1950's. For some authors, Gestalt-therapy is involved in the process of receiving phenomenology in Humanistic Psychology. However, specifics and institutionalized aspects of its studies, as disciplinarization, are barely visible in Mato Grosso do Sul (MS). In this scenario, this research aims to describe and analyze Gestalt-Therapy's disciplinarization in MS, between 1980 and 1990. Methodologically, this is a research in History of Psychology that uses Documentary and Content Analysis from oral and textual sources. Results indicate that Gestalt-Therapy's disciplinarization happened at the same time the firsts psychologists graduated in the city. They also highlight the involvement in the Gestalt-Therapy's training as a possibility of expansion knowledge, considering the scenario of Campo Grande, at the time, made it difficult to access complementary education. Finally, they suggest an eminently female group profile that shows the importance of therapeutic experiences in the group formation. Therefore, by unveiling this process, we understand certain aspects of the history of Brazilian Psychology, in addition to clarifying untold aspects of this local history. Palavras-chave : History of Psychology; Local History; Clinical Psychology; Gestalt Therapy.

Parent-Сhild Interaction During Early Childhood: Comparative Analysis of Parent Responsiveness Profile Among Dyads with Typically and Atypically Developing Children

The paper presents the results of the empirical study that aims to build an average group profile of parent responsiveness (PR) for parents with typically and atypically developing children before 3 years of age and to compare average PR profiles between these groups. Seventy parents with typically developing children and 32 parents with atypically developing children (autism, Down syn- drome, intellectual disabilities) between 10 and 36 months of age participated in the present study. The first sample was divided into two sub-groups: parents with typically developing children younger than 12 months of age (infants), and parents with typically developing children between 12 and 36 months of age (toddlers). Parents with atypically developing children were set as one group. The study used the PATTERN technology that employs video observations. Parent responsiveness was assessed on 4 scales (Dominance, Apathy, Sensitivity, and Support); group and individual PR profiles were constructed according to these scales. Sample comparison was conducted using Student’s t-test and Mann-Whitney U test. It has been shown that the PR to typically developing children differs compared to atypically developing children. Parents of atypically developing children are more inclined to dominate and are also characterized by greater psychological apathy. The age of typically developing children influences the nature of PR.

Influência dos currículos (formal e oculto) na formação da identidade profissional dos estudantes de medicina

BACKGROUND: The professional identity of the medical student is formed during graduation and is subject to the interference of factors included in the formal curriculum and informal curriculum of the student. PURPOSE: This study aims to describe the influences that the formal curriculum and the hidden curriculum exert in the formation of the professional identity in the students of the medical course. METHODS: This is a cross-sectional, descriptive study with qualitative-quantitative methodology. A questionnaire was applied for the evaluation of the students about activities that occurred during graduation, insertion of humanism in academic practice, and socio-demographic description and group profile, and 200 participants received these questions. Quantitative data were analyzed using the statistical program SPSS 20.0, considering as statistically significant p <0.05 and qualitative data by content analysis and categorization. RESULTS: 111/200 students answered the questionnaire, the majority coming from the 8th semester of the institution. There was perception of the influence of mentors, the contribution of the curriculum and socialization in the formation of the student's professional identity. The analysis of the participants' speeches showed the internalization of the humanization occurs mainly through the importance of example, the contact with the patient and the importance of the previous formation of character and personality of the student. CONCLUSIONS: There is influence of the graduation and faculty in the professional identity of the medical student, in addition to the evidence of the need for new research that describes the impact of the hidden curriculum.

Dimensions of Identification in the Workgroup and Employees’ Contributions to Collaborative Activities

The aim of this research is to find out connections of identifications with the work group (group identification), informal subgroups (micro-group identification), and other members in the work group (interpersonal identification), considering cognitive, affective, and behavioral components, with an employee’s contribution to cooperative activities. The sample includes 302 fellows of 35 workgroups in Russian commercial companies and public organizations. Empirical data were collected with the Questionnaire of Interpersonal Identification, the Questionnaire of Micro-group and Group Identification, and the Collaborative Group Activity Scale from the Leadership, Contribution, and Interpersonal Style Questionnaire. All the tools were assembled into the computer-based assessment program “Group Profile” (GP) to conduct the survey individually on PC. It was found that all three dimensions of group identification and affective measures of interpersonal and micro-group identification predict individual contribution to collaborative activities in groups. Employee involvement in the informal subgroup within the work group mediates relations between identification dimensions at different levels and contribution to collaborative activities. The ties of additional characteristics (gender, age, tenure with the organization) with cooperative activities have been described. The multivariate model of identification makes it possible to extend the research scope and enhance the understanding of causes and effects of employee identification in the group.

Using Learner Group Profiles for Content Recommendation in Ubiquitous Environments

The application of ubiquitous technologies in the improvement of education strategies is called ubiquitous learning. This strategy amplifies the pedagogical potential of e-learning through a ubiquitous and contextualized perspective. On the other hand, a ubiquitous technological mediation in learning can also increase the isolation of learners and reduce the integration among colleagues. Strategies to encourage the group learning can minimize these possible side effects. In this sense, this article proposes UbiGroup, an agent-based model for ubiquitous recommendation of educational contents for groups of learners. UbiGroup aims to help teachers to search, select and distribute educational materials for groups. The model considers the group profile and the context where learners are. The recommendation for dynamic groups of learners through a consensus profile is the main scientific contribution of this research. The model was evaluated through simulated scenarios. The results were encouraging and show potential for implementing UbiGroup in real learning environments.