Driving forces in substitution reactions of octahedral complexes: The influence of the competitive effect

The reaction of cis-[RuCl(2)(P-P)(N-N)] type complexes (P-P = 1,4-bis(diphenylphosphino)butane or (1,1`-diphenylphosphino)ferrocene; N-N = 2,2`-bipyridine or 1,10-phenantroline) with monodentate ligands (L), such as 4-methylpyridine, 4-phenylpyridine and benzonitrile forms [RuCl(L)(P-P)(N-N)](+) species Upon characterization of the isolated compounds by elemental analysis, (31)P{(1)H} NMR and X-ray crystallography it was found out that the type of the L ligand determines its position in relation to the phosphorus atom. While pyridine derivatives like 4-methylpyridine and 4-phenylpyridine coordinate trans to the phosphorus atom, the benzonitrile ligand (bzCN), a good pi acceptor, coordinates trans to the nitrogen atom. A (31)P{(1)H} NMR experiment following the reaction of the precursor cis-[RuCl(2)(dppb)(phen)] with the benzonitrile ligand shows that the final position of the entering ligand in the complex is better defined as a consequence of the competitive effect between the phosphorus atom and the cyano-group from the benzonitrile moiety and not by the trans effect. In this case, the benzonitrile group is stabilized trans to one of the nitrogen atoms of the N-N ligand. A differential pulse voltammetry experiment confirms this statement. In both experiments the [RuCl(bzCN)(dppb)(phen)]PF(6) species with the bzCN ligand positioned trans to a phosphorus atom of the dppb ligand was detected as an intermediate complex. (c) 2009 Elsevier Ltd. All rights reserved.

A novel MAP-MRF approach for multispectral image contextual classification using combination of suboptimal iterative algorithms

In this paper we present a novel approach for multispectral image contextual classification by combining iterative combinatorial optimization algorithms. The pixel-wise decision rule is defined using a Bayesian approach to combine two MRF models: a Gaussian Markov Random Field (GMRF) for the observations (likelihood) and a Potts model for the a priori knowledge, to regularize the solution in the presence of noisy data. Hence, the classification problem is stated according to a Maximum a Posteriori (MAP) framework. In order to approximate the MAP solution we apply several combinatorial optimization methods using multiple simultaneous initializations, making the solution less sensitive to the initial conditions and reducing both computational cost and time in comparison to Simulated Annealing, often unfeasible in many real image processing applications. Markov Random Field model parameters are estimated by Maximum Pseudo-Likelihood (MPL) approach, avoiding manual adjustments in the choice of the regularization parameters. Asymptotic evaluations assess the accuracy of the proposed parameter estimation procedure. To test and evaluate the proposed classification method, we adopt metrics for quantitative performance assessment (Cohen`s Kappa coefficient), allowing a robust and accurate statistical analysis. The obtained results clearly show that combining sub-optimal contextual algorithms significantly improves the classification performance, indicating the effectiveness of the proposed methodology. (C) 2010 Elsevier B.V. All rights reserved.

An Information Theory framework for two-stage binary image operator design

The design of translation invariant and locally defined binary image operators over large windows is made difficult by decreased statistical precision and increased training time. We present a complete framework for the application of stacked design, a recently proposed technique to create two-stage operators that circumvents that difficulty. We propose a novel algorithm, based on Information Theory, to find groups of pixels that should be used together to predict the Output Value. We employ this algorithm to automate the process of creating a set of first-level operators that are later combined in a global operator. We also propose a principled way to guide this combination, by using feature selection and model comparison. Experimental results Show that the proposed framework leads to better results than single stage design. (C) 2009 Elsevier B.V. All rights reserved.

Bildens godkännandeprocessi katalogproduktion : The image approval processin a catalog production

The objective of this thesis has been to investigate the approval process for an image. This investigation has been carriedout at four catalog-producing companies and three companies working with repro or printing. The information wasgathered through interviews and surveys and later used for evaluation. The result of the evaluation has shown that allbusinesses are very good at technical aspects but also that the biggest problem they have is with the communication. Theconclusion is that businesses need a clear construction for the image process. This will minimize the communicationproblems and make the process effective.

L'image de l'homme noir dans "La rue Cases-Nègres" de Joseph Zobel

Étude de l'homme noir dans la littérature postcoloniale. Comment cet homme se voit-il dans le roman "La rue Cases-Nègres"?

«DES YEUX BAISSÉS AUX POINGS LEVÉS» : L'IMAGE DE LA FEMME MAGHRÉBINE DANS L'ŒUVRE DE TAHAR BEN JELLOUN. UNE ÉTUDE COMPARATIVE DE TROIS PROTAGONISTES FÉMININS.

L'étude du portrait de la femme maghrébine dans trois romans de Ben Jelloun révèle trois vies d'enfant, d'adolescente et de femme très différentes quant à la condition féminine. Il y a une émancipation progressive entre les portraits qui peut s'expliquer par le fait que les romans se déroulent dans des cultures et à des époques différentes, mais aussi par les intentions féministes de l'auteur.

Biopolitik, civilsamfund og ’politisk eskatologi’ : Foucaults mistillid over for befolkningens indre kræfter

Biopolitics, Civil Society and Political Eschatology: Foucault’s distrust in the population’s inherent forces Michel Foucault’s scepticism toward discourses on the organic vitality of populations is not only explainable by his attention to the dark ‘underside of biopolitics – the risks of persecution of individuals, who threaten the population’s vitality from the inside. Moreover, it should be understood in light of Foucault’s acute sensitivity to the deep-seated, conflict-ridden nature of the population in terms of its inherent potential for cultural clashes, violent struggles, suspicions, hatred, or, in short, the perpetual conflicts of civil society. Foucault’s work led him to a position of ambiguous support for the state and to a more evident distrust in the forces of the population. He used the term “political eschatologies” about antipolitical visions that pronounce the end of politics in a final accord where social contradictions dissolve and the community will prevail over the state. Foucault played on the religious significations of the term, especially in regard to the religious, fanatic rejection of the duality between state and civil society, a rejection that rests on the belief in a completion of historical and political time and the final salvation of all in “the city of God”. The article demonstrates Foucault’s highly ambiguous view of civil society, it examines his discussion Ferguson’s work on civil society, and it considers Foucault’s use of the term “political eschatologies” to indicate the dangers of extreme, anti-state, political movements. It challenges the image of Foucault as an unequivocal proponent of grass roots and identity politics.  

Image processing technique to count the number of logs in a timber truck

This paper summarises the results of using image processing technique to get information about the load of timber trucks before their arrival using digital images or geo tagged images. Once the images are captured and sent to sawmill by drivers from forest, we can predict their arrival time using geo tagged coordinates, count the number of (timber) logs piled up in a truck, identify their type and calculate their diameter. With this information we can schedule and prioritise the inflow and unloading of trucks in the light of production schedules and raw material stocks available at the sawmill yard. It is important to keep all the actors in a supply chain integrated coordinated, so that optimal working routines can be reached in the sawmill yard.   

Identity and image – the story of expertise in a manufacturing company

This thesis is an investigation on the corporate identity of the firm SSAB from a managerial viewpoint (1), the company communication through press releases (2), and the image of the company as portrayed in news press articles (3). The managerial view of the corporate identity is researched through interviews with a communication manager of SSAB (1), the corporate communication is researched through press releases from the company (2) and the image is researched in news press articles (3). The results have been deducted using content analysis. The three dimensions are compared in order to see if the topics are coherent. This work builds on earlier research in corporate identity and image research, stakeholder theory, corporate communication and media reputation theory. This is interesting to research as the image of the company framed by the media affects, among other things, the possibility for the company to attract new talent and employees. If there are different stories, or topics, told in the three dimensions then the future employees may not share the view of the company with the managers in it. The analysis show that there is a discrepancy between the topics on the three dimensions, both between the corporate identity and the communication through press releases, as well as between the communication through press releases and the image in news press articles.

Convex Hulls in Image Processing : A Scoping Review

The demands of image processing related systems are robustness, high recognition rates, capability to handle incomplete digital information, and magnanimous flexibility in capturing shape of an object in an image. It is exactly here that, the role of convex hulls comes to play. The objective of this paper is twofold. First, we summarize the state of the art in computational convex hull development for researchers interested in using convex hull image processing to build their intuition, or generate nontrivial models. Secondly, we present several applications involving convex hulls in image processing related tasks. By this, we have striven to show researchers the rich and varied set of applications they can contribute to. This paper also makes a humble effort to enthuse prospective researchers in this area. We hope that the resulting awareness will result in new advances for specific image recognition applications.

Musikalisk gestaltning av en ”image” : - En fallstudie i design av narrativ mediemusik -

Studien ligger inom ramen för Ljud- och musikproduktion och bygger på ett case där en varumärkesmelodi/ musiklogotype till ett musikgymnasium ska designas. Syftet med studien är att utforska hur en image kan gestaltas musikaliskt och däri bättre förstå hur forskning genom design och användarmedverkan - påverkar och bidrar till processen inom design av narrativ mediemusik. Studien har ämnat svara på den övergripande frågeställningen: Hur kan komposition av narrativ musik beskrivas och genomföras som en designprocess? Forskningsfrågan innefattar även subfrågorna: Hur bidrar användarmedverkan till arbetsprocess vid design av narrativ mediemusik? Hur bidrar gruppsammansättning, själva processen och processverktygen till ett musikaliskt relevant resultat? Med formuleringen "ett musikaliskt relevant resultat" avses i studiens kontext en musikalisk prototyp/slutprodukt som har potential att kunna uttrycka känslor och värderingar som kan överensstämma med varumärkets (skolans) image och formulerade värderubriker. Kärnan i arbetet ligger inom fälten forskning genom design och användarmedverkan, där deltagarna under arbetsprocessens gång kontinuerligt och i flera processteg bidragit genom diskussioner, reaktioner, resonemang och konkreta förslag. Studien visar att designarbete inom narrativ mediamusik tillsammans med representanter för användarna/ målgruppen kan generera fler idéer om aspekter specifika för arbete med design av narrativ mediemusik samt bidra till större förståelse för aktuella kontexter (målgrupps-relaterade och process-relaterade kontexter såväl som musikaliska och genre-relaterade kontexter), än om designern arbetar ensam. Av vikt är att under designprocessen ta fram flera versioner av prototyperna, att göra olika instrumenteringar och interpretationer av det musikaliska materialet, där ett av målen med prototyperna är att designer stegvis lär sig vad som fungerar - vad som skapar en klingande mening i den aktuella målrelaterade kontexten - och ett sätt att kommunicera den här kunskapen är att designa och pröva flera olika prototyper i klingade form.