Extração de casos de teste utilizando Redes de Petri hierárquicas e validação de resultados utilizando OWL.

Este trabalho propõe dois métodos para teste de sistemas de software: o primeiro extrai ideias de teste de um modelo desenvolvido em rede de Petri hierárquica e o segundo valida os resultados após a realização dos testes utilizando um modelo em OWL-S. Estes processos aumentam a qualidade do sistema desenvolvido ao reduzir o risco de uma cobertura insuficiente ou teste incompleto de uma funcionalidade. A primeira técnica apresentada consiste de cinco etapas: i) avaliação do sistema e identificação dos módulos e entidades separáveis, ii) levantamento dos estados e transições, iii) modelagem do sistema (bottom-up), iv) validação do modelo criado avaliando o fluxo de cada funcionalidade e v) extração dos casos de teste usando uma das três coberturas de teste apresentada. O segundo método deve ser aplicado após a realização dos testes e possui cinco passos: i) primeiro constrói-se um modelo em OWL (Web Ontology Language) do sistema contendo todas as informações significativas sobre as regras de negócio da aplicação, identificando as classes, propriedades e axiomas que o regem; ii) em seguida o status inicial antes da execução é representado no modelo através da inserção das instâncias (indivíduos) presentes; iii) após a execução dos casos de testes, a situação do modelo deve ser atualizada inserindo (sem apagar as instâncias já existentes) as instâncias que representam a nova situação da aplicação; iv) próximo passo consiste em utilizar um reasoner para fazer as inferências do modelo OWL verificando se o modelo mantém a consistência, ou seja, se não existem erros na aplicação; v) finalmente, as instâncias do status inicial são comparadas com as instâncias do status final, verificando se os elementos foram alterados, criados ou apagados corretamente. O processo proposto é indicado principalmente para testes funcionais de caixa-preta, mas pode ser facilmente adaptado para testes em caixa branca. Obtiveram-se casos de testes semelhantes aos que seriam obtidos em uma análise manual mantendo a mesma cobertura do sistema. A validação provou-se condizente com os resultados esperados, bem como o modelo ontológico mostrouse bem fácil e intuitivo para aplicar manutenções.

NaOH and KOH for preparing activated carbons used in energy and environmental applications

Alkaline hydroxides, especially sodium and potassium hydroxides, are multi-million-ton per annum commodities and strong chemical bases that have large scale applications. Some of them are related with their consequent ability to degrade most materials, depending on the temperature used. As an example, these chemicals are involved in the manufacture of pulp and paper, textiles, biodiesels, soaps and detergents, acid gases removal (e.g., SO2) and others, as well as in many organic synthesis processes. Sodium and potassium hydroxides are strong and corrosive bases, but they are also very stable chemicals that can melt without decomposition, NaOH at 318ºC, and KOH at 360ºC. Hence, they can react with most materials, even with relatively inert ones such as carbon materials. Thus, at temperatures higher than 360ºC these melted hydroxides easily react with most types of carbon-containing raw materials (coals, lignocellulosic materials, pitches, etc.), as well as with most pure carbon materials (carbon fibers, carbon nanofibers and carbon nanotubes). This reaction occurs via a solid-liquid redox reaction in which both hydroxides (NaOH or KOH) are converted to the following main products: hydrogen, alkaline metals and alkaline carbonates, as a result of the carbon precursor oxidation. By controlling this reaction, and after a suitable washing process, good quality activated carbons (ACs), a classical type of porous materials, can be prepared. Such carbon activation by hydroxides, known since long time ago, continues to be under research due to the unique properties of the resulting activated carbons. They have promising high porosity developments and interesting pore size distributions. These two properties are important for new applications such as gas storage (e.g., natural gas or hydrogen), capture, storage and transport of carbon dioxide, electricity storage demands (EDLC-supercapacitors-) or pollution control. Because these applications require new and superior quality activated carbons, there is no doubt that among the different existing activating processes, the one based on the chemical reaction between the carbon precursor and the alkaline hydroxide (NaOH or KOH) gives the best activation results. The present article covers different aspects of the activation by hydroxides, including the characteristics of the resulting activated carbons and their performance in some environment-related applications. The following topics are discussed: i) variables of the preparation method, such as the nature of the hydroxide, the type of carbon precursor, the hydroxide/carbon precursor ratio, the mixing procedure of carbon precursor and hydroxide (impregnation of the precursor with a hydroxide solution or mixing both, hydroxide and carbon precursor, as solids), or the temperature and time of the reaction are discussed, analyzing their effect on the resulting porosity; ii) analysis of the main reactions occurring during the activation process, iii) comparative analysis of the porosity development obtained from different activation processes (e.g., CO2, steam, phosphoric acid and hydroxides activation); and iv) performance of the prepared activated carbon materials on a few applications, such as VOC removal, electricity and gas storages.

El juego estratégico de Rusia en el Cáucaso Sur: Sochi 2014

La propuesta de la ciudad de Sochi como sede de los Juegos Olímpicos de Invierno y de la 16° fecha del Gran Premio de Fórmula 1 de 2014, y como una de las sedes de la futura Copa Mundial de Futbol 2018, son una ratificación de la importancia estratégica que representa el Cáucaso para Rusia. Asimismo, el anclaje en el Cáucaso y en las costas del Mar Negro, con toda la inversión en infraestructura y en seguridad que representa la organización de eventos deportivos mundiales, implica la puesta en juego de una estrategia geopolítica que expresa la importancia de Rusia como potencia regional. En el calidoscopio de poder e intereses que se despliegan en la región caucásica, la sombra de Rusia se proyecta con fuerza. Abordar el rol que ejerce este país en el Cáucaso Sur, permitirá comprender las perspectivas actuales de la política exterior de Rusia en esta región, así como conocer de qué modo se despliega en el territorio el juego estratégico del poder a través de eventos deportivos que se observan desde todos los lugares del mundo.

Estonia and Latvia, ca. 1696-1698 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Ducatuum Livoniae et Curlandiae novissima tabula : in quibus sunt Estonia, Litlandia et aliae minores provinciae, per Justum Danckerts. It was published by per Justum Danckerts between 1696 and 1698. Scale [ca. 1:1,000,000]. Covers Estonia, Latvia, and a portion of Russia and Lithuania. Map in Latin.The image inside the map neatline is georeferenced to the surface of the earth and fit to the Europe Lambert Conformal Conic coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, territorial boundaries, shoreline features, and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

Mongolia and North China, 1749 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Carte de la Tartarie Occidentale : pour servir a l'Histoire generale des voyages, tiré des auteurs anglois, par N. Bellin, Ingenieur de la Marine. It was published by Pierre de Hondt in 1749. Scale [ca. 1:5,400,000]. Covers Mongolia and North China, and portion of Russia. Map in French and Dutch. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Asia North Lambert Conformal Conic coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, territorial boundaries, roads, the Great Wall of China, and more. Relief shown pictorially.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

Nieuwe kaart van Tartarie na de alderlaaste ondekking int ligt gebragt

door Isaak Tirion ; J. Keyser get. on gesn.

Die Staaten von Südost=Europa: Rumänien, Serbien, Montenegro, Bulgarien, Kreta, Europ. Türkei, Griechenland

Redigiert v. Dr. K. Peucker ; Rudolph Maschek sculps ; Kartogr. Anst. v. Th. Bannwarth.

Theatrum historicum ad annum Christi quadrigentesimũ: in quo tũ Imperii Romani tũ Barbarorum circumincolentium status ob oculos ponitur pars orientalis

Auctore Guillelmo Delisle.

The EU’s Sanctions against Syria: Conflict Management by Other Means. Security Policy Brief No. 38

Since May 2011, the EU has launched one of its most far reaching and sophisticated sanctions operations in support of the protests against the current regime in Syria. The present brief examines the measures wielded by the EU, its expected impact and its implications for the EU’s relations with its global partners. While seriously undermined by the lack of support of Russia, the sanctions are having a noticeable economic impact. Yet, the choice of measures is ill-suited to stop the bloodshed. The sanctions have also served to (re)define partnerships with other powers, both in the Middle-East and globally.

Azerbaijan-a growing problem for the West. OSW Commentary No. 146, 15.09.2014

Azerbaijan’s cooperation with the West, launched two decades ago, has helped it become a relatively strong and ambitious actor on the international stage. It has become a key country in the region from the Western (USA and the EU) and Turkish points of view, as well as an important partner in the energy sector. The strategic EU concept of the Southern Gas Corridor, also supported by the United States, is among the initiatives based on cooperation with Azerbaijan. Surprisingly, however, Azerbaijan’s increased ambition and importance have caused its policy to diverge ever farther from the expectations and plans formulated by the West. The changes in the balance of power in the South Caucasus, occurring in the context of the conflict in Ukraine, have forced Azerbaijan to revise its assessment of its position in the region. The main impetus for Azerbaijan’s actions is fear of Russia, as well as the weakness of the West which has become particularly apparent in the recent stages of the Ukrainian crisis. Azerbaijan’s actions so far have displayed its tendency to deepen its self-isolation in foreign affairs and consolidate its authoritarian system. This comes as a challenge to the West, whose ability to shape its relations with Azerbaijan has weakened considerably. This state of affairs poses the threat that in the current situation, the Southern Gas Corridor concept, which Azerbaijan amended in 2012 in its own favour, might become totally blocked.

Gazprom's expansion in the EU - co-operation or domination? OSW Report, April 2008

The energy sector, especially with regard to natural gas trade, is one of the key areas of co-operation between the EU and Russia. However, the character of this co-operation has given rise to increasing doubts both in Brussels and among the EU member states. The questions have emerged whether this co-operation does not make the EU excessively dependent on Russian energy supplies, and whether Gazprom's presence in the EU will not allow Moscow to interfere in the proces of devising the EU energy policy. This report is intended to present the factual base and data necessary to provide accurate answers to the foregoing questions. The first part of the report presents the scope and character of Gazprom's economic presence in the EU member states. The second part shows the presence of the EU investors in Russia. The data presented has been provided by the International Energy Agency, European Commission, the Central Bank of Russia and the Russian Federal State Statistics Service. Some of the data is the result of calculations made by the Centre for Eastern Studies' experts who were basing on the data provided by energy companies, the specialist press and news agencies.

No change in the Russian Caucasus. The Winter Olympics amid a local war. OSW Study 47/2014

The North Caucasus has been the most unstable region of the Russian Federation since the collapse of the Soviet Union. Considering the scale of violence, the conflict in the region should be regarded as a local civil war between the Salafi Islamic armed underground and the secular authorities of the North Caucasus republics, supported by the security services. The Chechen leader Ramzan Kadyrov, who has made himself de facto independent from Moscow, holds a particularly strong position in the region and his ambition is to gain control of the neighbouring territories. The Russian leadership, which sees the security of the Winter Olympics in Sochi as its top priority, is facing a strategic choice between trying to integrate the North Caucasus with the rest of the federation, or isolating the region and accepting the existence of an informal "internal abroad” within Russia. The cultural processes taking place in the region, including Islamisation, de-modernisation and de-Russification, have been driving the North Caucasus ever further away from the rest of Russia, strengthening a mutual sense of foreignness.

Dialogue with the Eurasian Union on Ukraine – an opportunity or a trap? OSW COMMENTARY No. 154, 2014-12-01

The Eurasian Union (or, to give it its full name, the Eurasian Economic Union, EEU) is Russia's flagship project, by use of which it aims to institutionally subordinate the post-Soviet states to itself using political ties and the projected common economic space. The Kremlin has so far managed to persuade Belarus and Kazakhstan, and tentatively also Armenia, to join this integration project, which on the surface looks like a multilateral initiative but in reality conceals a network of bilateral relations centred on Russia. However, in order for Russia to reconstruct its influence in its neighbourhood permanently and without change, it is of key importance that Ukraine is incorporated into the EEU. That still seemed feasible even in 2013, but the Maidan and the Russian-Ukrainian war have undone this possibility. However, they also opened up an alternative scenario for Russia, one in which the Western states recognise the Eurasian Union as a legitimate partner in discussions about a new order in Europe with a view to restoring peace in Ukraine. It is worth taking into account the strategic consequences of that scenario. We need to consider if the idea which Moscow has been lobbying for – and which has found some supporters in Brussels and Berlin – threatens to take us back to the Cold War system of geopolitical blocs and implies recognition of Russia's dominance over Ukraine and the other Eastern Partnership countries?

Gazprom’s expansion in the EU: co-operation or domination? OSW Report, October 2009. Second edition, revised

Introduction. The energy sector, especially with regard to the gas trade, is one of the key areas of co-operation between the EU and Russia. However, the form this co-operation has taken has been giving rise to some concern, both in Brussels and in the EU member states. Questions arise as to whether the EU has not become excessively dependent on Russia for energy, and whether the presence of the Russian gas monopoly in the EU does not enable Russian interference with the development of EU energy policy. The objective of this series of OSW reports (for the previous edition,see Gazprom’s expansion in the EU: co-operation or domination? April 2008 – pdf 1.2 MB) is to provide facts which will permit an accurat answer to these questions to be formulated. Over the course of last year, two new factors strongly affected Gazprom’s capability to operate on the EU market. One was the ongoing global economic crisis, which has depressed demand for gas both in Russia and in Europe. Gazprom has cut both its own production and the quantities of gas it purchases from the Central Asian states, and the decrease in export revenues has forced the company to modify some of its current investment plans. Less demand for gas and the need to reduce production are also having a positive impact – the Russian company is likely to avoid the difficulties in meeting all of its export commitments which, only a year or so ago, it was expected to experience. The other factor affecting Gazprom’s expansion in Europe is the observed radicalisation of the rhetoric and actions of both the company itself and of the Russian authorities with regard to the gas sector as broadly understood. The gas crisis between Russia and Ukraine in January 2009, which resulted in a two-week interruption of gas supplies from Russia to Europe via Ukraine, was the most prominent example of this radicalisation. The hardening of rhetoric in the ongoing energy talks with the EU and other actors, and increased political and business activities designed to promote Russian gas interests in Europe, in particular the lobbying for the Nord Stream and South Stream projects, are further signs of this shift in tone. These issues raise the question of whether, and to what extent, the current condition of Gazprom’s finance will permit the company to implement the infrastructural projects it has been endorsing and its other investment plans in Europe. Another important question is whether the currently observed changes in how Gazprom operates will take on a more permanent character, and what consequences this will have for the European Union. The first part of this report discusses Gazprom’s production and export potential. The second comprehensively presents the scope and nature of Gazprom’s economic presence in the EU member states. Finally, the third part presents the Russian company’s methods of operation on foreign markets. The data presented in the report come mainly from the statistics of the International Energy Agency, the European Commission and Gazprom, as well as the Central Bank of Russia and the Russian Statistical Office. The figures presented here also include proprietary calculations by the OSW based on figures disclosed by energy companies and reports by professional press and news agencies.

"Creeping" civil war in the North Caucasus. OSW Commentary No. 50, 2011-03-15

Over the last year, the situation in Russia’s North Caucasus has become further destabilised. Attacks and armed clashes happen daily, and destabilisation is spreading to an increasingly large area. The extent of violence in the region is so great that it can already be stated that a de facto civil war is taking place, the warring parties being the Islamic armed underground movement which operates under the banner of the so-called Emirate of the North Caucasus, and the secular governments of the individual republics, who are supported by local and federal branches of the Russian Federation’s Interior Ministry and Federal Security Service. Moscow has no idea how to successfully tackle the Caucasus rebellion. Force has proved to be costly and unproductive, while the attempts made since early 2010 to integrate the region with the rest of Russia by implementing development programmes have not brought the desired results, because of widespread corruption and faint interest from businessmen who are afraid to invest in such an unsafe region. A growing problem for Moscow, particularly for the prestige of the state, is attacks by militants on areas near Sochi, where the 2014 Winter Olympics is to take place. It must be assumed that over the next 3 years before the Olympics, Moscow’s priority in the region will be to ensure the safety of Olympic preparations, and then the games themselves. It cannot be ruled out that the North Caucasus Federal District with its ‘troubled republics’ will be surrounded by a kind of cordon sanitaire (Sochi is situated in the neighbouring Southern Federal District). This could in turn strengthen these republics’ isolation, maintain the state of permanent instability, and postpone the prospects of solving the region’s acute economic and social problems.