scholarly journals Influence of morphology on the ventilation of polluted areas – a case study from Rybnik Plateau, Poland

2014 ◽  
Vol 2 (1) ◽  
pp. 9-15
Author(s):  
Jolanta Radosz

Abstract In the present study an attempt was made to determine the degree of effective ventilation of the valleys in the area of the Rybnik Plateau, based on the example of the environs of Jastrzębie Zdrój, a city with high air pollution. For the analysis of the conditions of airing of valleys the areas with different physico-geographical characteristics, primarily in terms of density of the valley network, origin and morphology of the valleys, and type of surface deposits were selected. 49 cross-valley profiles were drawn for the selected valleys; on the basis of the profiles the following parameters were calculated: the distances between the edges of each valley, valley bottom width, and depth of the valleys. The degree of ventilation of each valley was calculated after the formulae of Kaps (1955) and Błażejczyk (1975). The lowest values of the index of effective ventilation were recorded almost in all main loessial valleys in the southern part of the area. This indicates their weak or even extremely weak degree of ventilation. The valleys in the remaining area, open predominantly to N and E, are most commonly aired to a sufficient degree. This is determined by their morphology, especially smaller depth, smaller relative heights and higher mean wind speed. The example presented in this study shows that the index of effective ventilation, even if it is calculated for a relatively small area, reflects the characteristics of the local environment extremely well which is relevant from the perspective of the movement of contaminated air.

2003 ◽  
Vol 2 (3) ◽  
pp. 259-305 ◽  
Author(s):  
Peyi Soyinka-Airewele

AbstractThis paper explores the means by which social institutions located in African communities that are deeply and violently polarized along ethnic-related lines, navigate the institutional role and identity within such a local environment. Utilizing a case study of ethno-political conflict in the Ile-Ife and Modakeke communities of South Western Nigeria, the paper investigates how the local academy has sought to survive as a zone of diversities located in host cit(ies) with rigidly structured mythicohistories and conflicting geopolitical claims. Through this exploration of the paradox of the uneasy cohabitation of contested realities and the quest for postwar healing and rehabilitation, the paper unveils the unusual local interpretation, rejection and reconstruction of the concept of neutrality, and highlights the challenges, both philosophical and concrete, which confront the academy. The findings of the study suggest a need to cautiously, but decidedly, resituate the university as a civically engaged arena for the creative re-envisioning of diversity and cultural pluralism and ultimately for local and national conflict transformation in Nigeria.


2013 ◽  
Vol 66 (4) ◽  
pp. 521-528
Author(s):  
Renato da Silva Marques ◽  
Luis Eduardo de Souza ◽  
Luiz Delfino Albarnaz ◽  
Raul Oliveira Neto

Mining planning and its correct sequencing are essential to facilitate the exploitation of minerals both economically and environmentally, thus ensuring the feasibility of the mining in operational and economic terms. The small geological complexity or the low aggregate value of a mineral deposit tends to result in the planning stages being neglected, so the mining begins without the necessary detailing or it is only scheduled for a short period of time. Thus, in order to ensure a sustainable sequence of operations, and to predict the environmental impacts caused by mining activities and suggest options that would allow the establishment of mitigation measures for these impacts, the feasibility of the technical and economic utilization was evaluated for an occurrence of bentonite in the Bañado de Medina deposit located in the Department of Cerro Largo, Uruguay, respecting the local environment in the process so as to give the project a strong character of sustainability.


2018 ◽  
Vol 14 (3) ◽  
pp. 44-68 ◽  
Author(s):  
Fatma Abdelhedi ◽  
Amal Ait Brahim ◽  
Gilles Zurfluh

Nowadays, most organizations need to improve their decision-making process using Big Data. To achieve this, they have to store Big Data, perform an analysis, and transform the results into useful and valuable information. To perform this, it's necessary to deal with new challenges in designing and creating data warehouse. Traditionally, creating a data warehouse followed well-governed process based on relational databases. The influence of Big Data challenged this traditional approach primarily due to the changing nature of data. As a result, using NoSQL databases has become a necessity to handle Big Data challenges. In this article, the authors show how to create a data warehouse on NoSQL systems. They propose the Object2NoSQL process that generates column-oriented physical models starting from a UML conceptual model. To ensure efficient automatic transformation, they propose a logical model that exhibits a sufficient degree of independence so as to enable its mapping to one or more column-oriented platforms. The authors provide experiments of their approach using a case study in the health care field.


2020 ◽  
Vol 10 (1) ◽  
pp. 1-9
Author(s):  
Neetu Yadav

Learning outcomes Learning outcomes are as follows: to learn about the application of Bartlett and Ghoshal’s model of international strategy; to compare and contrast the global strategy of IKEA in India and China; and to understand how adaptability can create a new competitive advantage in emerging markets. Case overview/synopsis The case study enables discussion about the global strategy of a well-established multi-national company, IKEA in an emerging market. IKEA is a well-established and well-known brand in the international market in furniture retailing. It has decided to make a debut in India in 2017 with its first store in Hyderabad. However, it was yet to open it in 2018. The case emphasizes upon understanding the global strategy of IKEA, positioning itself in the fragmented Indian furniture industry, managing differences in emerging markets and adapting to the local environment of the particular country. The case highlights how adaptability can create a new competitive advantage in managing global strategy in different countries of emerging markets. Complexity academic level This case study is developed for post-graduate management programs as an MBA, Executive MBA and executive development programs. Supplementary materials Teaching Notes are available for educators only. Subject code CSS 11: Strategy.


2004 ◽  
Vol 37 (2) ◽  
pp. 167-191 ◽  
Author(s):  
AGUSTÍ NIETO-GALAN

In 1915, after acquiring first-hand knowledge of the new free radical chemistry at the Swiss Federal Institute of Technology (ETH) in Zurich, Antonio García Banús (1888–1955) became professor of organic chemistry at the University of Barcelona and created his own research group, which was to last from 1915 until 1936. He was a gifted teacher and a prolific writer who attempted to introduce international scientific standards into his local environment. This paper analyses the bridges that Banús built between the experimental culture of organic chemistry at the ETH and the University of Barcelona. It presents a case study which aims to provide new historical data for the general analysis of groups who conducted their work in the European periphery.


2020 ◽  
Vol 45 (3) ◽  
pp. 755-786
Author(s):  
David Thacher

AbstractSince the 1970s, police departments have subjected the use of force by their officers to increasingly stringent oversight, but those efforts have struggled against the difficulty of codifying the complex and idiosyncratic judgments that police work requires. In response, some departments have developed new models of oversight that use routine incident reviews partly as a tool for learning in order to document the continually surprising circumstances that officers encounter in the field, to scrutinize existing responses, and to articulate alternatives. This article analyzes the logic of this emerging model through a case study of use-of-force reviews in the Portland Police Bureau. I argue that this emerging model relies on an approach to practical inquiry that has not been adequately understood in criminal justice scholarship and practice—one that uses the routine review of organizational experience to pursue normative progress as well as technical understanding and that makes it possible to adapt complex policing practices to the local environment in which they operate.


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