scholarly journals ALTERAÇÕES DE PAISAGENS RIBEIRINHAS: O CASO DO RIO PARAMOPAMA, ESTADO DE SERGIPE

FLORESTA ◽  
2011 ◽  
Vol 41 (2) ◽  
Author(s):  
Luísa Ferreira Ribeiro ◽  
Francisco Sandro Rodrigues Holanda ◽  
Renisson Neponuceno de Araújo Filho ◽  
Igor Pinheiro Rocha ◽  
Suzilane Santos Gois

Os objetivos deste trabalho foram analisar as alterações da paisagem promovidas pela erosão marginal e verificar a eficácia da técnica de bioengenharia de solos na recuperação das margens de um trecho do rio Paramopama, localizado no município de São Cristóvão, estado de Sergipe. Para a avaliação da alteração da paisagem, classificada como de altíssimo, alto e baixo grau de antropização, foram analisadas séries fotográficas compreendidas no período de 1998-2008. As espécies que se estabeleceram com maior ocorrência foram as pertencentes à família Poaceae. Dentre os fatores responsáveis pela alteração da paisagem, destacaram-se a erosão e a instalação de dutos atravessando a calha do rio. No rio Paramopama, foram observados dois momentos distintos, um com altíssimo e outro com alto grau de antropização. A técnica de bioengenharia de solos mostrou-se eficiente no que se refere à recuperação da paisagem, além de prover condições para a recuperação do ecossistema ribeirinho.Palavras-chave: Margens de cursos d´água; recuperação de paisagem; antropização. AbstractRiverine landscape changes: case-study of Paramopama River, Sergipe State. This work aimed to analyze current changes caused by riverbank’s erosion, as well as to verify the effectiveness of soil bioengineering techniques on the landscape recovery applied to Paramopama River banks. In order to verify landscape’s changes, it analyzed a photographic set produced during the period of 1998-2008, which had been classified according to its degree of anthropization as very high, high and low degree. Species with higher occurrence were those belonging to botanic family of Gramineae. There were many factors to landscape change, erosion was the most important followed by disturbances caused by ducts installation across the river channel. At Paramopama River two different moments could be observed, firstly, a very high degree of anthropization followed by a high degree of anthropization. Soil bioengineering technique was efficient to landscape recovery, providing ecological conditions to ecosystem recovery.Keywords: Stream banks; landscape recovery; anthropization.

2003 ◽  
Vol 44 (156) ◽  
pp. 45-66 ◽  
Author(s):  
Nebojsa Janicijevic

The paper aims to point out the limitations of the partial and the need for a holistic approach to researching the influences of national culture on the management. Using the case study of organizational restructuring of Serbian enterprises, the paper shows how the complete understanding of the influences of national culture on management will be possible only if all dimensions of the national culture are simultaneously included in the analysis. The main hypothesis of the paper is that the low degree of formalization of Serbian companies' organizational structure, even with a high degree of uncertainty avoidance in Serbian national culture, results from the forces of collectivism and "female" values in this culture.


Author(s):  
Francisco Sandro Rodrigues Holanda ◽  
Maria Hosana dos Santos ◽  
Janisson Batista de Jesus ◽  
Wadson De Menezes Santos ◽  
Edinaldo De Oliveira Alves Sena ◽  
...  

The objective of this study was to evaluate the input of suspended sediment from the slope toe in the São Francisco River channel, in Northeast Brazil, under different soil bioengineering techniques. Sediments were collected in the years of 2013, 2014 and 2015, in five transects crossing the river channel. Sediment input in the sampling points was higher in the year of 2013, i.e., the year of the highest river discharge. Sediment supply to the river channel for a period of 3 years (2013, 2014 and 2015), was evaluated at 20, 40 and 60% depth, along five different transects (P1= riverbank, P2= beginning of the thalweg, P3= middle of the thalweg, P4= end of the thalweg, and P5 = margin of the side sandybar), oriented by the presence or absence of erosion control techniques (treatments) such as: 1-Natural Vegetated Slope; 2-Vegetated Riprap; 3-Eroded Slope; 4-Live Cribwall and 5-Vetiver grass Contour Line. Sediments input was different in all evaluated transects, and the one identified as Eroded Slope at 20% depth presented the lowest amount of suspended sediment load. There was a decrease in the total amount of suspended sediment in the evaluated periods, probably due to the progressive decrease in the river discharge, and the protection provided by the soil bioengineering techniques.


Author(s):  
N. P. Buravtseva ◽  
S. N. Antyuganov ◽  
O. V. Semenko ◽  
A. G. Ryazanova ◽  
E. I. Eremenko ◽  
...  

Aim. Conducting epizootological and epidemiological zoning ofthe territory of North Caucasus Federal Region (NCFR) by the degree of non-welfare by anthrax using Arc GIS10 program. Materials and methods. 2 parameters were used during zoning of the territories of subjects of NCFR (Stavropol Region, Karachaevo-Cherkessia, Kabardino-Balkaria, Chechen, North Ossetia-Alania, Ingushetia, Dagestan Republics) by non-welfare by anthrax: integrated parameter of infection risk and epizootics risk. The parameters were input into the Arc GIS10 program. Materials on infection of humans and animals with anthrax for the last 55 (1960 - 2014) years were used. Results. The regions of the territories of NCFR subjects were distributed by non-welfare degree into 4 groups: group 1 - regions with a low degree of non-welfare, group 2 - regions with an average degree of non-welfare, group 3 - regions with a high degree of non-welfare, group 4 - regions with a very high degree of non-welfare. Conclusion. Taking into account high parameters of spread and intensity of epizootological and epidemiological situation, regions of groups 3 and 4 could be classified as endemic territories for anthrax, whereas all the other regions could be attributed to the zone of sporadic infection manifestation.


2008 ◽  
Vol 12 (5) ◽  
pp. 1241-1248 ◽  
Author(s):  
A. Petrone ◽  
F. Preti

Abstract. In the last few years "D. I. A. F." (Department of Agriculture and Forestry Engineering of Florence University), has been testing the effectiveness of soil bioengineering techniques in Central America. The focus of the present study was to find out which native plants were most suited for soil bioengineering purposes, particularly in the realization of riverbank protection in Nicaragua. Furthermore, we have also been aiming at economic efficiency. These techniques are appropriate for sustainable watershed management especially in underdeveloped countries. Concerning the plants to be used we experimented four native species. Gliricidia Sepium, Cordia dentata and Jatropha curcas are suitable for soil bioengineering more than Bursera Simaruba. Economically speaking, the sustainability of such interventions in underdeveloped countries, has been shown by the evaluation of the cost of riverbank protection using vegetated crib-walls in Nicaragua compared to the cost in different contexts.


Author(s):  
Joanna Baran

The main aim of this paper was to determine if there is any correlation between the degree of globalization of individual sectors of the Polish food industry and their productivity. In the first stage of the research, 16 sectors of the food industry were divided into 3 groups: with a very high degree (Group 1), high degree (Group 2) and low degree (Group 3) of globalization. This division was based on the share of trans-national corporations in the value of sales revenues in individual branches of the food industry. Then, the author compared the groups with the use of traditional factors (labour productivity, assets productivity) and multi-dimensional productivity index - Malmquist Productivity Index. The research indicates that the sectors with very high and high degrees of globalization report definitely higher labour productivity and wages and salaries, with a slightly higher MPI measured productivity but lower fixed asset productivity.


2018 ◽  
Vol 49 (2) ◽  
pp. 98-114 ◽  
Author(s):  
Mattias Arvola ◽  
Marcus Samuelsson ◽  
Mathias Nordvall ◽  
Eva L. Ragnemalm

Background. Learning to manage a classroom is a difficult but important part of teacher education. Earlier research on simulations for learning classroom management has highlighted the difficulty of supporting reflection. Purpose. This case study explores and evaluates the design of a simulation for student teachers’ reflection on classroom management. Design. The design process resulted in the scenario-based SIMPROV simulation, which was made in the form of a hypermedia radio theatre that students go through in pairs or triads. Authoritarian, authoritative, democratic, and compliant leadership styles were built into the choices student teachers made. Evaluation. The simulation was evaluated in two courses where the participants’ level of reflection and perceived knowledge improvement was measured using a questionnaire. Forty-three first-year student teachers, 48 third-year student teachers, and 38 of the student teachers’ mentors participated in the evaluation. Results. The results indicate that participants engaged in reflection and understanding to a high degree, and only to a low degree in critical reflection or habitual action. Conclusions. The conclusions are that the scenario-based simulation designed as a hypermedia radio theatre supported knowledge improvement, understanding, and reflection and that social interaction during and after simulation sessions was an important feature.


2007 ◽  
Vol 32 (1) ◽  
pp. 55-74 ◽  
Author(s):  
D V R Seshadri

New ventures tend to have an alarmingly high casualty rate. Those who take the most severe brunt in such failures are key managers, who unwittingly take on roles much beyond their formal job descriptions, in an effort to keep the venture alive, often ending up as ‘employee entrepreneurs.’ Employees taking ownership of their jobs far in excess of that specified by their formal roles, thereby manifesting entrepreneurial behaviour, are also referred to as intrapreneurs. This paper presents the real life case study (with names, identities, and situations disguised) of the chief executive of a start-up venture who tried to repeatedly salvage the start-up company from one crisis after another, over a span of seven years, when two successive promoters failed to deliver their part of the commitment through timely infusion of the required promoter�s equity. In addition, he also had to reckon with facing undue pressure from the promoters to cater to their short-term goals. Based on the case study of Global Optical Disc Company Ld., the author presents a model to better understand new venture failure arising out of goal dissonance between the promoter and the organization and proposes the following hypotheses: A low degree of psychological ownership by the professional top management and a low goal congruence of the promoter and the new venture can be lethal for a new venture. A high degree of psychological ownership by the professional top management and a high goal congruence of the promoter and the new venture could result in a likely success, provided the industry structure, strategy, financial structuring, etc., do not result in the creation of conditions to cause failure. The situation of a low degree of psychological ownership by the professional top management team and a high goal congruence of the promoter and the new venture may result in a weak beginning for the new venture despite heroic efforts of the professional top management team. A high degree of psychological ownership by the professional top management and a low degree of goal congruence of the promoter and the new venture would most likely result in an eventual failure of the new venture. The transition from an employee mindset on the part of the intrapreneurial chief executive in a new venture to that of an entrepreneurial mindset in the situation of distress in the new venture, due to failure on the part of the promoter, is not automatic. The paper concludes with lessons for those managers who may be put into similar �testing by the fire� situations. While there could be any number of reasons for the failure of entrepreneurial start-ups, this paper focuses in particular on the failure attributable to dissonance between promoter�s personal goals and the start-up organization�s stated goals. Such lack of goal convergence is a phenomenon that occurs with alarmingly regular frequency. The paper describes some of the options that an employee-chief executive has under such adverse circumstances.


Author(s):  
Sankara Pitchaiah Podila

Usually, anger is a normal, healthy human emotion. Anger, impairs one's ability to process information and to exert cognitive control over their behavior. The response was taken from 2743 students (male:1589) and female (1154) Government schools of Guntur, Andhra Pradesh, India. The students were asked to respond for a question “Are you getting anger frequently/sometimes/ never. Statistical tools were used to analyze the data. Under high degree anger the recorded highest percentage was 38.83 for males (SJRR school) and 28.64 for females (SK school). In the case of low degree the percentages are 18.75 and 18.06. The study found that there is a significant difference between the degree of anger and gender, i.e., high percent of males had high degree, compared to female. As the anger has Influence on health and career, parents shall arrange the counseling for their children to manage the anger.


2020 ◽  
Vol 54 (2) ◽  
pp. 371-404 ◽  
Author(s):  
Sonja Gipper

AbstractThis paper outlines a method for studying the sequential distributions of epistemic markers with the purpose of gaining insight into their interactional functions. The method is exemplified with a case study of two epistemic markers of Yurakaré (isolate, Bolivia), =la “commitment” and =se “presupposition”. The investigation reveals that the two markers show different distributions across initial and responsive utterances. Moreover, each marker functions differently when used in initial utterances and responses. It is argued that these distributions show that the interactional functions of the two markers go beyond the marking of commitment and presupposition, and that they contrast in terms of two scales, one capturing the poles of “highly initiating” and “highly responsive”, the other concerning high vs. low degrees of “thematic agency”. While the commitment marker =la is associated with the responsivity pole and with a low degree of thematic agency, the presupposition marker =se shows a tendency toward the initiating pole and toward a high degree of thematic agency. These findings then support the view that epistemic markers are employed to co-construct epistemic perspectives in interaction rather than to make explicit some internal epistemic state held by the speaker.


2008 ◽  
Vol 5 (1) ◽  
pp. 379-403 ◽  
Author(s):  
A. Petrone ◽  
F. Preti

Abstract. In the last few years "D. I. A. F." (Department of Agriculture and Forestry Engineering of Florence University), has been testing the effectiveness of Soil Bio-Engineering techniques in Central America. The focus of the present study was to find out which native plants were most suited for soil bio-engineering purposes, particularly in the realization of riverbank protection. Furthermore, we have also been aiming at economic efficiency. In the context of sustainable watershed management, these techniques seem to be appropriate, especially in underdeveloped countries. Concerning the plants to be used, we considered three native species, Gliricidia Sepium, Cordia dentata and Jatropha curcas, to be appropriate for this type of work. Economically speaking, the low cost of such interventions in underdeveloped countries, has been shown by the construction of riverbank protection using vegetated crib-walls in Nicaragua.


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