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The purpose of this paper is to examine the causal relationship between interactive and personal campaigning on social media and political involvement, and the mechanisms that explain the effects. Specifically, this study examines whether personal and interactive communication on Twitter increases political involvement among citizens through social presence and perceived expertise.

An experimental design – a 2 (low vs high interactivity)×3 (depersonalized vs individualized vs privatized communication) between-subjects design – is used.

The findings show that interactive communication leads to a stronger sense of social presence and source expertise, which positively affect involvement. The effects of personal campaigning differ. Individualized communication positively affects involvement via source expertise. Interestingly, privatized communication positively affects involvement via social presence, but negatively via source expertise.

Although a growing body of work examines the political consequences of social media, there is still very little understanding why social media affect citizens. The current study fills this void by investigating how the use of social media affects political involvement among citizens.

This paper highlights the integrative character of orthopedagogics. Quality of Life (QoL), as guiding the normative framework in orthopedagogics is explicitly connected with the framework of human rights and the capability approach (CA) in the quest for social justice and human dignity. The purpose of this paper is to question that how these three specific frameworks can cross-fertilize each other and result in the development of an integrated normative foundation for supporting people living in socially vulnerable situations.

This paper reflects on the question on how the human rights framework, the CA and the framework of QoL can be integrated in the support of people who find themselves in a socially vulnerable situation.

The core features of each framework are described.

To conclude the paper, commonalities and the added value of integrating these three frameworks are explored. By integrating these three frameworks, they could function as a shared agenda that gives direction to the daily actions of professionals, with attention for aspects at the micro, meso and macro levels. Each framework and their interrelatedness urge for an integrative approach of orthopedagogics where the strengths of different frameworks are recognized and used in order to support people in socially vulnerable situations to achieve a life worth living.

The origins of ischaemic heart disease are obscure. The article discusses the influence of environment, heredity and diet (especially for consumption). It is then proposed that dietary deficiencies of copper may be a factor that enhances risk of the disease. The evidence for this is discussed.

Non-suicidal self-injury (NSSI) is distinguishable from suicide attempts (SAs) on a number of psychological and motivational factors. However, in corrective services settings, NSSI and SA are not clearly distinguished in assessment impacting on intervention. The purpose of this paper is to examine if any attributes differentiate lifetime history of SA+NSSI, NSSI and SA presentations in inmates who had recently been assessed in custody by a risk intervention team.

A comprehensive clinical assessment and file review was conducted with 87 male inmates (including a no self-injury control group) in two large correctional centres in New South Wales, Australia, to determine if three self-injury groups differ from the control group and if the three self-injury groups differ from each other across a range of static, trait, environmental and clinical characteristics.

The SA+NSSI group was most different from the control group (27/59 variables), and from the SA group (10/59 variables), predominantly across trait and clinical correlates. The SA group was least different from the control group (2/59 variables: suicide ideation, childhood physical abuse).

It was found that the presence of SA+NSSI history is an indicator of increased psychopathology. A history of SA only appears not readily associated with psychopathology. The self-injury subgroups reflected different clinical profiles with implications for risk assessment and treatment planning.

Remand prisoners (RPs) are known to be in a more vulnerable situation than those already convicted. Beyond the difficulties to adapt to the prison, RP also tend to experience tough circumstances due to the uncertainty of their future. This study aims to further test the psychometric properties of the Suicide Concerns for Offenders in the Prison Environment (SCOPE-2) in a sample of RP.

The authors have carried out a confirmatory factor analysis to test the psychometric qualities of the SCOPE-2. The authors tested the originally proposed two-factor structure composed of two subscales: optimism and protective self-worth. Also, the authors examined internal consistency through Cronbach’s alphas. Convergent validity was tested by correlational analyses between SCOPE-2 subscales and the Suicide Behaviors Questionnaire-Revised and Brief Symptom Inventory (BSI) total scores. Finally, the authors have tested known-groups validity by carrying out discriminant analysis by testing the SCOPE-2 subscales’ ability to predict belonging to a group with previous suicide attempts.

The confirmatory factor analysis showed an acceptable model fit, even though the subscale “Protective self-worth” presented a less acceptable fit. The correlation analysis supported the convergent validity of the SCOPE-2. Both the “Optimism” and “Protective self-worth” subscales showed a positive correlation with the total scores of BSI. Finally, the Portuguese version of SCOPE-2 also showed known groups validity. Concretely, the “Optimism” scores revealed an acceptable predictive accuracy.

This study embraces important contributions to the practice as it was the first study to validate a measure to assess vulnerability for suicide and self-harm in male and female RP.

To the best of the authors’ knowledge, this was the first study to validate an instrument to assess vulnerability for suicide and self-harm in both male and female pretrial detainees. Knowing their particular case, as well as the lack of responses for these individuals, it is particularly important to access suicide concerns that could precede suicide attempts.

Norway is a small nation state on the northernmost coastline of Western Europe, integrated in the Western world economy. For centuries Norway's integration in the world economy had been based on exports of raw materials such as fish and timber, as well as shipping services. In the early 20th century, furnace-based metals (made possible by cheap hydropower) were added to this export basket. Just as the world economy entered an increasingly unstable phase in 1970s, another natural resource was discovered in Norway: petroleum – that is, oil and natural gas from the North Sea. This chapter analyses the challenges and possibilities inherent in the Norwegian strategy of developing an oil economy in a world economic situation influenced by new and stronger forms of international integration through the four decades between 1970 and 2010.

The purpose of this paper is to offer an appreciation of the role of national oil companies (NOCs) which control roughly 90 percent of the global hydrocarbon reserves, and whose operating and investment decisions affect prices, demand adjustments as well as their countries' policy options. Given that the role of NOCs is poorly understood largely due to prevailing economic and political clichés that substitute for analysis, this paper takes an institutional economics perspective to analyse the issue of NOC governance and related issues.

The paper adopts an integrative approach. First, it introduces the language of institutional economics to broadly structure a review of NOC governance. It then links the theoretical discussion to an assessment of the macro‐economic imperatives to which the NOC and its governance may need to respond. Finally, an audit trail is used for assessing cases in their particular institutional, cultural and physical conditions. Any simple comparisons — across highly variable contexts – would not only be contentious but also run counter to institutionalist methodology.

The paper shows that NOCs need not be treated as black boxes. They constitute an institutional response to failing market coordination with international oil companies and a means for producer countries to align political and economic interests. Yet, overriding the market and creating powerful stand‐alone, state‐owned, state‐run enterprises raise efficiency and broader regulatory concerns. The paper shows how institutional economics offers a conceptual apparatus to identify options for regulating NOCs at interrelated levels of control and suggests the need for case‐by‐case assessment.

Applying the conceptual apparatus outlined in the paper may allow future research to systematically discuss particular features of NOC governance, generate more general pattern models, and thereby improve the base for decisions on NOC's strategies and regulation.

The originality of the paper lies in its integrated approach of analysis and employing the institutional economics approach to the case studies to reveal the role of NOCs in the energy scene.

Corporate social responsibility (CSR) may serve as a regulatory framework for corporate practices or as a management trend that helps to improve the legitimacy of corporations. This article explores whether and how petroleum corporations' adherence to standardised CSR instruments has influenced how they deal with climate change.

Comparative case study of Hydro and Shell based on assessments of central documents, publications on CSR and interviews with corporate representatives.

The management trend mode of CSR has prevailed within both companies. Company conduct is deeply influenced by the global petroleum field, but it mainly promotes CSR as legitimacy enhancer and hinders the instruments in working as regulative frameworks. Hydro executives have no aim of applying the CSR instruments to guide their actions. Executives at Shell have tried, but without being fully able to get the vast Shell group to adapt. Thus far, the failure of CSR as a regulative framework seems to contribute to its success as legitimacy enhancing concept. Nonetheless, it is not clear whether the two trends will continue to contrast or if they may start to work in conjunction.

Due to the global organisational span of such corporations, CSR research may gain from focussing specifically on institutionalisation processes at the level of their global organisational field.

The negative trade‐off between CSR as legitimacy enhancer and as a regulative framework may represent a core concern for CSR practitioners. Further, the findings indicate that it may prove more fruitful to develop CSR instruments within specific organisational fields than to focus on holistic instruments.

The framework applied tracks micro‐effects of the instruments and provides insights into the relative importance of company‐internal and ‐external factors. This may prove fruitful for CSR research directed at other business and social concerns.

The knowledge about the heat transfer and flow field in the ribbed internal passage is particularly important in industrial and engineering applications. The purpose of this paper is to identify and analyze the performance of the constrained large-eddy simulation (CLES) method in predicting the fully developed turbulent flow and heat transfer in a stationary periodic square duct with two-side ribbed walls.

The rib height-to-duct hydraulic diameter ratio is 0.1 and the rib pitch-to-height ratio is 9. The bulk Reynolds number is set to 30,000, and the bulk Mach number of the flow is chosen as 0.1 in order to keep the flow almost incompressible. The CLES calculated results are thoroughly assessed in comparison with the detached-eddy simulation (DES) and traditional large-eddy simulation (LES) methods in the light of the experimentally measured data.

It is manifested that the CLES approach can predict both aerodynamic and thermodynamic quantities more accurately than the DES and traditional LES methods.

This is the first time for the CLES method to be applied to simulation of heat and fluid flow in this widely used geometry.

This paper aims to propose a precise turbulence model for vehicle aerodynamics, especially for vehicle window buffeting noise.

Aiming at the fact that commonly used turbulence models cannot precisely predict laminar-turbulent transition, a transition-code-based improvement is introduced. This improvement includes the introduction of total stress limitation (TSL) and separation-sensitive model. They are integrated into low Reynolds number (LRN) k-ε model to concern transport properties of total stress and precisely capture boundary layer separations. As a result, the ability of LRN k-ε model to predict the transition is improved. Combined with the constructing scheme of constrained large-eddy simulation (CLES) model, a modified LRN CLES model is achieved. Several typical flows and relevant experimental results are introduced to validate this model. Finally, the modified LRN CLES model is used to acquire detailed flow structures and noise signature of a simplified vehicle window. Then, experimental validations are conducted.

Current results indicate that the modified LRN CLES model is capable of achieving acceptable accuracy in prediction of various types of transition at various Reynolds numbers. And, the ability of this model to simulate the vehicle window buffeting noise is greater than commonly used models.

Based on the TSL idea and separation-sensitive model, a modified LRN CLES model concerning the laminar-turbulent transition for the vehicle window buffeting noise is first proposed.