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Isotani S.,Carnegie Mellon University | Isotani S.,University of Sao Paulo | Mizoguchi R.,Osaka University | Capeli O.M.,FATEC | And 4 more authors.
Computers and Education | Year: 2013

When the goal of group activities is to support long-term learning, the task of designing well-thought-out collaborative learning (CL) scenarios is an important key to success. To help students adequately acquire and develop their knowledge and skills, a teacher can plan a scenario that increases the probability for learning to occur. Such a scenario defines pedagogically sound structures that prevent off-task behavior and engage students in more meaningful interactions. The main difficulty in designing effective CL scenarios is transforming the teacher's intentions into elements that constitute the learning scenario. This problem is frequently observed when novice teachers attempt to improve the quality of learning and instruction by blending collaborative activities with individual activities without careful planning. With the goal of helping teachers in planning collaborative scenarios, we have developed an intelligent authoring tool referred to as CHOCOLATO using Semantic Web technologies (e.g. ontologies) in order to represent knowledge about different pedagogies and practices related to collaboration. Through the use of this knowledge, CHOCOLATO can provide intelligent guidance that helps teachers to create theory-based CL scenarios which has proven to be effective in a variety of situations. We evaluated it by conducting two experiments. We were interested in verifying whether the recommendations given by CHOCOLATO help novice teachers to design pedagogically sound CL activities, and if these activities help students to learn collaboratively in real classroom settings. The first experiment had the participation of 58 pre-service teachers that created CL scenarios with and without our authoring tool and the second experiment was carried out in a Brazilian public school together with 218 students. The results suggest that the guidance provided by CHOCOLATO do help novice teachers plan, understand and share CL scenarios more easily. They also suggest that the continuous utilization of well-designed theory-based CL activities create favorable conditions for students (particularly less knowledgeable ones) to improve their overall performance throughout the school year. © 2012 Elsevier Ltd. All rights reserved.


Ferrer G.,Naval Postgraduate School, Monterey | Cortezia S.,Unisinos | Neumann J.M.,Faculdade Cenecista
Journal of Industrial Ecology | Year: 2012

This research analyzes the Green City project in the town of Três Coroas, Brazil. We describe its management system, evaluating the change process and the economic, social, and environmental benefits since the recycling center has been in service. We demonstrate a successful case of operational and cultural change in the disposal of industrial waste, describing the key points that helped the adoption of a new set of procedures, and illustrating the role of the champion in the implementation of a symbiotic cluster. © 2012 by Yale University.


Thome K.M.,University of Brasilia | Vieira L.M.,Unisinos | dos Santos A.C.,Federal University of Lavras
Journal of East-West Business | Year: 2012

This article compares the Russian and British marketing channels for Brazilian beef distribution. The results show that the framework hereby developed aids understanding of the differences and the reasons for the organizational form of these channels. The findings also show that there is a difference in the way these channels are organized to seek efficiency in their business transactions. Institutional environment attributes are able to influence the distinction between channels in terms of transaction efficiency. © 2012 Copyright Taylor and Francis Group, LLC.


The strategic management of innovation in the Brazilian clothing market has found certain barriers, especially regarding product development in micro and small enterprises. Local Productive Arrangements (LPAs) have been used by organizations as a strategy to overcome this difficulty. This research presents a multi-case study on five LPAs in the State of Parana with four or more years of existence. The total sample consisted of 20 business agents of governance, including presidents of unions and organized associations responsible for Research and Development (R & D) projects. The study examined R&D actions presented in the strategic planning arrangements from the consolidation strategies and the Routes of Strategic Project roadmapping for the future of this sector in the State of Parana. Several difficulties were found in the innovation chain process, especially related to the management of joint product development by contractors and cooperation of suppliers and public policies to encourage R&D in small and medium-sized enterprises (SMEs).


Netto R.G.,UNISINOS | Tognoli F.M.W.,UNISINOS | Assine M.L.,Claro | Nara M.,Kochi University
Palaeogeography, Palaeoclimatology, Palaeoecology | Year: 2014

The occurrence of crowded Rosselia ichnofabric in Early Devonian deposits of 'Transition Beds' (Western Gondwana Parana Basin, southern Brazil) and the paleobiology and paleoecology of its potential tracemakers are discussed in this paper. Crowded Rosselia ichnofabric has been recorded chiefly in Cenozoic storm beds associated with high sedimentation rates on the inner shelf, and is usually interpreted as resulting from opportunistic behavior of terebellid polychaetes. Rosselia is a common ichnotaxon in the archetypical Cruziana ichnofacies, developed preferentially in fair-weather deposits formed in inner shelf settings. During storm surges, however, this endobenthic community is strongly affected, decimating those that are unable to escape. New records presented herein reinforce the conclusion that short-term colonization represented by crowded Rosselia ichnofabric occurs essentially in erosive storm deposits of high sedimentation rates. Rather than being opportunistic, the crowded Rosselia ichnofabric appears to be the result of a strategic behavior developed by stress-tolerant terebellid polychaetes in inner shelf zones during or just after storm surges. This strategic behavior appeared during the early Paleozoic and was adopted by terebellids from their earliest appearance. © 2013 Elsevier B.V.


Horta R.L.,Prontamente Clinica de Psiquiatria e Psicoterapia | Esswein G.C.,Unisinos | Horta C.L.,Prontamente Clinica de Psiquiatria e Psicoterapia
Ciencia e Saude Coletiva | Year: 2013

This paper presents qualitative research analyzing two focus groups with twenty workers in Psychosocial Care Centers (CAPS I) in Porto Alegre, southern Brazil, in 2009. They were invited to discuss overwork and dissatisfaction with work in general and also recent demands of crack cocaine users on the local mental health networks. Workers in both groups reported a strong concern about the instability of employment contracts, leading to limited ability to plan their futures. In addition, the accumulation of tasks to replace absenteeism in teams leads to a limited interest in long-term action planning and the option for less complex tasks. Court orders, the interference of public officials and requests of hospitalization, are considered unfavorable routine conditions in the perception of health workers, as well as uncooperative and quarrelsome family members and unmotivated users for resuming treatment. The teams seem to be the center of a conflict between the impossibility of avoiding the emergence of demands of crack users who apply to local health networks and the limits established by management, increasing dissatisfaction and perceived overwork.


Buatois L.A.,University of Saskatchewan | Netto R.G.,Unisinos | Mangano M.G.,University of Saskatchewan
Special Paper of the Geological Society of America | Year: 2010

Late Paleozoic ichnofaunas from eight different Gondwanic basins (Paganzo, San Rafael, Tarija, Paraná, Karoo, Falkland, Transantarctic, and Sydney) provide valuable evidence for reconstructing the environmental conditions of postglacial transgressions. The depositional environment of most of these transgressive finegrained deposits historically has been controversial, with interpretations ranging from freshwater lacustrine to brackish-water estuarine, and even normal-salinity, open-marine platforms. Although the various units differ in the degree of marine connection, the common theme in all is the presence of freshwater ichnofaunas in direct association with glacially influenced coasts affected by strong discharges of meltwater. Ichnofaunas are typically dominated by nonspecialized grazing trails (Mermia, Helminthopsis, Helminthoidichnites), simple feeding traces (Treptichnus), arthropod trackways (Diplichnites, Umfolozia), and fish trails (Undichna), representing examples of the Mermia and, to a lesser extent, the Scoyenia ichnofacies. A complex paleogeography of fjords and deep, large coastal lakes is suggested. Freshwater conditions were prevalent during most of the time because these areas were affected by a strong discharge of fresh water due to melting of the ice masses during deglaciation. The simple dichotomy between marine and nonmarine settings is misleading because these peculiar assemblages should first be understood in terms of their paleoecologic significance, and subsequently placed within a larger paleoenvironmental context. Laterally persistent, albeit diachronous, peri-Gondwanan ichnofaunas characterize melting of the late Paleozoic ice caps. Temporal recurrence of these ichnofaunas through the Late Carboniferous-Middle Permian indicates a common response of benthic faunas under similar ecological conditions during deglaciation events. © 2010 The Geological Society of America. All rights reserved.


Canto Dos Santos J.V.,UNISINOS | Costa I.F.,UNISINOS | Nogueira T.,UNISINOS
Expert Systems with Applications | Year: 2015

The importance of a reliable supply of electric power in industrial society is unquestionable. In control centers of electrical utilities, an important task is the security analysis, even for those companies that already have the modern smart grids. In this task, a contingency is the operation outage of one or more devices, while contingencies selection is the determination of the most severe contingencies on the system. Despite the current technological advances, an analysis of all possible contingencies is impracticable. In this paper, a method to efficiently perform the selection of multiple contingencies is presented. The issue is modeled as a combinatorial optimization problem and solved by genetic algorithms, developed for this application. A robust method, which considers power flow and voltage, is presented and tested over IEEE-30 test system and over a large real life system, considering double outages of branches. The results showed accuracy close to 100%, when compared with an exact method. © 2014 Elsevier Ltd. All rights reserved.


Lima J.H.D.,UNISINOS | Netto R.G.,UNISINOS
Revista Brasileira de Paleontologia | Year: 2012

The ichnofauna of the Teresina Formation from the Cerro Caveiras (Dom Pedrito, Rio Grande do Sul State, South Brazil) is revised in this paper. Bergaueria isp., Cochlichnus cf. anguineus, Cruziana problematica, cf. Diplocraterion isp., Diplopodichnus biformis, Helminthopsis isp., Lockeia siliquaria, Multina arcuata isp. nov., Oldhamia isp., Palaeophycus striatus, P. tubularis, Phymatoderma burkei, Planolites beverleyensis, P. montanus, Teichichnus isp., and Thalassinoides isp. were recorded. Isopodichnus problematicus, Helminthopsis tenuis and Unarites isp., previously described in these deposits are now described as Cruziana problematica, indeterminate molluscan trail, and Multina arcuata isp. nov., respectively. The ichnofauna is composed chiefly of horizontal, simple shallow burrows, with a predominance of feeding structures. Resting, dwelling and crawling structures also occur, as well as indeterminate tiny grazing trails, but are less frequent. Ichnodiversity and intensity of bioturbation are usually low, and P. montanus is the commonest ichnotaxon. The main characteristics of the ichnofauna suggest a marine benthic fauna stressed by salinity fluctuations and resulting in an impoverished Cruziana ichnofacies. The absence of vertical burrows and the common occurrences of monospecific assemblages of Planolites indicate extreme stress events, probably due to the establishment of freshwater conditions. Further studies focused on the ichnological signatures of these deposits will provide more detailed information to improve the current paleoecologic and paleoenvironmental interpretations of the Teresina Formation deposits. © 2012 by the Sociedade Brasileira de Paleontologia.


Shunnaq S.,Unisinos | Raeder M.,Unisinos
Proceedings - 18th Symposium on Virtual and Augmented Reality, SVR 2016 | Year: 2016

This study proposes a tool model for phobia treatments using exposure therapy and virtual reality. The model goal is to represent a system that enables the treatment of several phobias with different techniques, through the immersion of the patient in a virtual environment with head-mounted displays, supporting the addition of new modules of techniques or phobias. The present work seeks to propose a broader and more flexible virtual therapy system and obtaining a more current solution. For the evaluation of the applicability of this model, a prototype was developed with support to the treatments of flooding, implosion, rationalization and systematic desensitization, as well as support to more than one phobia. The prototype was tested with volunteers to evaluate the levels of reality, immersion and anxiety caused to analyze the possibility of the use of this tool to support phobia treatments. At the end of this study, the results showed that the developed model is applicable, and that virtual reality has great strength when applied to human's psychology, being that 80% of the participants reported feeling afraid or having other characteristics of anxiety. © 2016 IEEE.

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