909 resultados para Shell preference
Resumo:
In a competitive world, the way a firm establishes its organizational arrangements may determine the enhancement of its core competences and the possibility of reaching new markets. Firms that find their skills to be applicable in just one type of market encounter constraints in expanding their markets, and through alliances may find a competitive form of value capture. Hybrid forms of organization appear primarily as an alternative to capturing value and managing joint assets when the market and hierarchy modes do not present any yields for the firm's competitiveness. As a result, this form may present other challenging issues, such as the allocation of rights and principal-agent problems. The biofuel market has presented a strong pattern of changes over the last 10 years. New intra-firm arrangements have appeared as a path to participate or survive among global competition. Given the need for capital to achieve better results, there has been a consistent movement of mergers and acquisitions in the Biofuel sector, especially since the 2008 financial crisis. In 2011 there were five major groups in Brazil with a grinding capacity of more than 15 million tons per year: Raízen (joint venture formed by Cosan and Shell), Louis Dreyfus, Tereos Petrobras, ETH, and Bunge. Major oil companies have implemented the strategy of diversification as a hedge against the rising cost of oil. Using the alliance of Cosan and Shell in the Brazilian biofuel market as a case study, this paper analyses the governance mode and challenging issues raised by strategic alliances when firms aim to reach new markets through the sharing of core competences with local firms. The article is based on documentary research and interviews with Cosan's Investor Relations staff, and examines the main questions involving hybrid forms through the lens of the Transaction Cost Economics (TCE), Agency Theory, Resource Based View (RBV), and dynamic capabilities theoretical approaches. One focal point is knowledge "appropriability" and the specific assets originated by the joint venture. Once the alliance is formed, it is expected that competences will be shared and new capabilities will expand the limits of the firm. In the case studied, Cosan and Shell shared a number of strategic assets related to their competences. Raízen was formed with economizing incentives, as well to continue marshalling internal resources to enhance the company's presence in the world energy sector. Therefore, some challenges might be related to the control and monitoring agents' behavior, considering the two-part organism formed by distinctive organizational culture, tacit knowledge, and long-term incentives. The case study analyzed illustrates the hybrid arrangement as a middle form for organizing the transaction: neither in the market nor in the hierarchy mode, but rather a more flexible commitment agreement with a strategic central authority. The corporate governance devices are also a challenge, since the alignment between the parent companies in the joint ventures is far more complex. These characteristics have led to an organism with bilateral dependence, offering favorable conditions for developing dynamic capabilities. However, these conditions might rely on the partners' long-term interest in the joint venture.
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Aquest projecte s’ha portat a terme per tal de millorar en diferentsaspectes el motor Honda Gx35 , del vehicle de baix consum de la Universitat deGirona (Udg). Aquest és un motor de combustió interna de gasolina (cicle Otto).L’objectiu és el disseny d’una culata per poder minimitzar el consum de gasolina, la qual s’ha de poder acoblar amb el motor Honda Gx35. Aquest motor,prèviament s’haurà de modificar per poder-hi instal•lari la nova culata
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Arbuscular mycorrhizal symbioses are mutualistic interactions between fungi and most plants. There is considerable interest in this symbiosis because of the strong nutritional benefits conferred to plants and its influence on plant diversity. Until recently, the symbiosis was assumed to be unspecific. However, two studies have now revealed that although it can be largely unspecific with the fungal community composition changing seasonally, in certain ecosystems it can also be highly specific and might potentially allow plants to cheat the arbuscular mycorrhizal network that connects plants below ground.
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The basis set superposition error-free second-order MØller-Plesset perturbation theory of intermolecular interactions was studied. The difficulties of the counterpoise (CP) correction in open-shell systems were also discussed. The calculations were performed by a program which was used for testing the new variants of the theory. It was shown that the CP correction for the diabatic surfaces should be preferred to the adiabatic ones
Resumo:
Several internally fertilizing hermaphroditic animals can only perform one sexual role at a time. In such species, two individuals that engage in a copulation may have different interests in acting as male or female. A gender choice must be made which, if both individuals have the same preference, may give rise to a severe sexual conflict. Here we tested the hypothesis that gender choice could be influenced by mating history, using the freshwater snail, Physa acuta. We recorded the copulatory behaviour of 240 pairs composed of a focal individual and a partner, each either short- or long-isolated. We found that the time to the first copulation was unaffected by isolation status, suggesting that first contacts in this species are random processes. In contrast, the duration of copulations and the frequency of rejection behaviours suggested that individual gender preference switches from male biased to female biased as isolation increases. In addition, snails rejected copulations more frequently when presented to a partner with the same isolation status. Reciprocity, measured as the rate of gender swapping between the first and second copulations, was high irrespective of gender status. We suggest possible evolutionary causes for this gender preference switch and discuss its potential importance in natural population as well as its consequences for the maintenance of hermaphroditism
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In experiments with two-person sequential games we analyzewhether responses to favorable and unfavorable actions dependon the elicitation procedure. In our hot treatment thesecond player responds to the first player s observed actionwhile in our cold treatment we follow the strategy method and have the second player decide on a contingent action foreach and every possible first player move, without firstobserving this move. Our analysis centers on the degree towhich subjects deviate from the maximization of their pecuniaryrewards, as a response to others actions. Our results show nodifference in behavior between the two treatments. We also findevidence of the stability of subjects preferences with respectto their behavior over time and to the consistency of theirchoices as first and second mover.
Resumo:
Cabo Verde foi alcandorado a PDM recentemente o que traz novos e grandes desafios para o seu processo de desenvolvimento. O país que tem as suas vulnerabilidades decorrentes do seu frágil tecido produtivo e da sua reduzida dimensão, para além da escassez de recursos naturais, enfrenta ainda o desafio da insularidade. Assim terá que ancorar-se em primeiro lugar nos seus recursos humanos, para enfrentar esses desafios. A questão da gestão de desempenho e recompensa começa a emergir-se no sector empresarial quer privado quer estatal, como um processo fundamental para se alcançar a excelência operacional, fundamental para enfrentar a competição nos dias de hoje. O presente estudo focou o sistema de avaliação de desempenho na Shell Cabo Verde uma filial do Grupo Shell, que é uma multinacional com uma história rica e com forte experiência no mercado Global. Procurou-se, através de um estudo de caso, fazer o levantamento e o enquadramento teórico do sistema e analisar até que ponto o mesmo tem potenciado a melhoria do desempenho organizacional através do alinhamento dos objectivos individuais e da organização. Cape Verde has recently been upgraded to a Medium Development Country condition which brings along new great challenges to its development process. The country has already its vulnerabilities due to its week productive tissue and its small dimension and beyond the lack of natural resources it has to deal with the challenge of insularity. Thus it has to anchor itself firstly in its human resources to face the challenges. The performance and reward management starts to emerge in both private’s and State’s entrepreneur sector, as a fundamental process to achieve the operational excellence in order to face the competitiveness now-a-days. This study focused the performance evaluation used in Shell Cape Verde, a company that belongs to the multinational Shell with a rich global market experience. We tried, through a case study, to understand the theoric contents of the system and analyze at what point it has enhanced the improvement of the organizational performance through the alignment of individual objectives and organizational objectives.
Resumo:
1. Sex differences in levels of parasite infection are a common rule in a wide range of mammals, with males usually more susceptible than females. Sex-specific exposure to parasites, e.g. mediated through distinct modes of social aggregation between and within genders, as well as negative relationships between androgen levels and immune defences are thought to play a major role in this pattern. 2. Reproductive female bats live in close association within clusters at maternity roosts, whereas nonbreeding females and males generally occupy solitary roosts. Bats represent therefore an ideal model to study the consequences of sex-specific social and spatial aggregation on parasites' infection strategies. 3. We first compared prevalence and parasite intensities in a host-parasite system comprising closely related species of ectoparasitic mites (Spinturnix spp.) and their hosts, five European bat species. We then compared the level of parasitism between juvenile males and females in mixed colonies of greater and lesser mouse-eared bats Myotis myotis and M. blythii. Prevalence was higher in adult females than in adult males stemming from colonial aggregations in all five studied species. Parasite intensity was significantly higher in females in three of the five species studied. No difference in prevalence and mite numbers was found between male and female juveniles in colonial roosts. 4. To assess whether observed sex-biased parasitism results from differences in host exposure only, or, alternatively, from an active, selected choice made by the parasite, we performed lab experiments on short-term preferences and long-term survival of parasites on male and female Myotis daubentoni. When confronted with adult males and females, parasites preferentially selected female hosts, whereas no choice differences were observed between adult females and subadult males. Finally, we found significantly higher parasite survival on adult females compared with adult males. 5. Our study shows that social and spatial aggregation favours sex-biased parasitism that could be a mere consequence of an active and adaptive parasite choice for the more profitable host.
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This study describes a task that combines random searching with goal directed navigation. The testing was conducted on a circular elevated open field (80 cm in diameter), with an unmarked target area (20 cm in diameter) in the center of 1 of the 4 quadrants. Whenever the rat entered the target area, the computerized tracking system released a pellet to a random point on the open field. Rats were able to learn the task under light and in total darkness, and on a stable or a rotating arena. Visual information was important in light, but idiothetic information became crucial in darkness. Learning of a new position was quicker under light than in total darkness on a rotating arena. The place preference task should make it possible to study place cells (PCs) when the rats use an allothetic (room frame) or idiothetic (arena frame) representation of space and to compare the behavioral response with the PCs' activity.
Resumo:
In the present study we are going to analyze the development of the ingroup favoritism and outgroup derogation in relation to national groups (Portuguese as ingroup and Cape-Verdeans, Brazilian and Chinese as outgroups) in Portuguese children with ages between 6 and 10 years (60 participants with 6/7 years and 60 participants with 9/10 years). The first aim of this research was to examine whether the ingroup favoritism and outgroup derogation changes according to the age groups. We started from the idea that the age groups would show ingroup preference. However in relation to negativity outgroup it was expected to be less evident. The second aim of this study was to examine if the ingroup favoritism and outgroup derogation would be relatively independent, or if they would be related to each other, so that positive perceptions of national ingroup were associated with negative perceptions of national outgroups (in particular, Cape-Verde, Brazilian and Chinese). In a nut Shell, the results confirmed the hypotheses, and in both age groups, the children showed ingroup preference, the negativism of the outgroup was less obvious in the Brazilian group but not in the others (Cape-Verdeans and Chinese). Regarding the relation between the preference for the ingroup and the negativity of the outgroup we realized that these are relatively independent. As a result, we found that the ingroup favoritism is not related with outgroup derogation, it means that, positive perceptions of the ingroup are not related with negative perceptions of the outgroups.
Resumo:
In the present study we are going to analyze the development of the ingroup favoritism and outgroup derogation in relation to national groups (Portuguese as ingroup and Cape-Verdeans, Brazilian and Chinese as outgroups) in Portuguese children with ages between 6 and 10 years (60 participants with 6/7 years and 60 participants with 9/10 years). The first aim of this research was to examine whether the ingroup favoritism and outgroup derogation changes according to the age groups. We started from the idea that the age groups would show ingroup preference. However in relation to negativity outgroup it was expected to be less evident. The second aim of this study was to examine if the ingroup favoritism and outgroup derogation would be relatively independent, or if they would be related to each other, so that positive perceptions of national ingroup were associated with negative perceptions of national outgroups (in particular, Cape-Verde, Brazilian and Chinese). In a nut Shell, the results confirmed the hypotheses, and in both age groups, the children showed ingroup preference, the negativism of the outgroup was less obvious in the Brazilian group but not in the others (Cape-Verdeans and Chinese). Regarding the relation between the preference for the ingroup and the negativity of the outgroup we realized that these are relatively independent. As a result, we found that the ingroup favoritism is not related with outgroup derogation, it means that, positive perceptions of the ingroup are not related with negative perceptions of the outgroups.
Resumo:
The color preference of A. obliqua was evaluated in two-choice tests. The results showed that both sexes were attracted to wavelengths ranging from 340 nm to 670 nm, although the broad major peak of attraction occurred between 380 and 570 nm.
Resumo:
Pattern of attack of a galling insect reveals an unexpected preference-performance linkage on medium-sized resources. The Plant Vigor Hypothesis (PVH) predicts oviposition preference and higher offspring performance on longer and fast-growing shoots, and although several studies have tested its predictions, long-term studies concerning the patterns of host selection by galling species are still lacking. The PVH was tested in this study using Bauhinia brevipes (Fabaceae) as the host of a leaf gall midge, Asphondylia microcapillata (Diptera, Cecidomyiidae) during three consecutive years. Shoots were collected from the same 80 plants between 2001 and 2003 and shoot length, number of healthy and galled leaves, gall number, and mortality factors were recorded. Nearly 600 galls were found on the 5,800 shoots collected. Medium-sized shoots supported from 46 to 70% of all galls, with greater gall survival rate in 2002 and 2003. A decrease in parasitism rate coupled with an increase in gall predation lead to a constant similar gall survivorship rate in all years (x = 22.7%). Although gall abundance varied among years (122 in 2001, 114 in 2002 and 359 in 2003) preference for longer shoots was not observed because the percentage of galled shoots and galled leaves were higher on medium shoot length classes in all years. The observed distribution of gall abundance and galled shoots were always greater than the expected distribution on medium shoot length classes. These findings do not support the PVH, and show that A. microcapillata can maximize the female preference and larval performance on medium-sized shoots of B. brevipes.
Resumo:
No presente estudo vamos analisar o desenvolvimento do favoritismo endogrupal e do “derogation” (desvalorização) exogrupal em relação a grupos nacionais (portugueses como endogrupo e cabo-verdianos, brasileiros e chineses como exogrupos) em crianças portuguesas com idades compreendidas entre os 6 e os 10 anos (60 participantes com 6/7 anos e 60 participantes com 9/10 anos). O primeiro objectivo desta investigação consistiu em examinar se o favoritismo endogrupal e o “derogation” exogrupal variam em função de grupos etários. Partimos da ideia de que os grupos etários evidenciariam preferência endogrupal. Já em relação à negatividade exogrupal era esperado que fosse menos evidente. O segundo objectivo deste estudo foi examinar se o favoritismo endogrupal e o “derogation” exogrupal seriam relativamente independentes, ou se estariam reciprocamente relacionados, de modo que percepções positivas do endogrupo nacional estivessem associadas com percepções negativas dos exogrupos nacionais (em particular, cabo-verdianos, brasileiros e chineses). Os resultados confirmaram as hipóteses, assim em ambos os grupos etários as crianças evidenciaram preferência endogrupal, a negatividade do exogrupo, foi apenas menos evidente para o exogrupo brasileiros e não para os restantes (cabo-verdianos e chineses). Relativamente à relação entre a preferência pelo endogrupo e a negatividade do exogrupo verificou-se que estas são relativamente independentes. Assim verificou-se que o favoritismo endogrupal não está relacionado com a desvalorização exogrupal, ou seja, percepções positivas do endogrupo não estão relacionadas com percepções negativas dos exogrupos.