Phase Transitions in Disordered Systems: The Example of the Random-Field Ising Model in Four Dimensions

By performing a high-statistics simulation of the D = 4 random-field Ising model at zero temperature for different shapes of the random-field distribution, we show that the model is ruled by a single universality class. We compute to a high accuracy the complete set of critical exponents for this class, including the correction-to-scaling exponent. Our results indicate that in four dimensions (i) dimensional reduction as predicted by the perturbative renormalization group does not hold and (ii) three independent critical exponents are needed to describe the transition.

DSC study of transitions involved in thermal treatment of foamable mixtures of PE and EVA copolymer with azodicarbonamide

The transitions and reactions involved in the thermal processing of binary mixtures of polyethylene and poly(ethylene-co-vinyl acetate) copolymers with different concentrations of a foaming agent (azodicarbonamide) were studied using differential scanning calorimetry (DSC). The effect of ZnO as a kicker also was discussed. The temperature at the maximum rate and the heat evolved were measured for all the processes—melting, transitions, and reactions—all the mixtures prepared were measured and compared. Azodicarbonamide decomposed differently depending on the polymeric matrix. These data can be very useful for the plastic processing industry.

Singular Temperatures Connected to Charge Transport Mechanism Transitions in Perylene Bisimides from Steady-State Photocurrent Measurements

Perylene bisimides (PBIs) are n-type semiconducting and photogenerating materials widely used in a variety of optoelectronic devices. Particularly interesting are PBIs that are simultaneously water-soluble and liquid-crystalline (PBI-W+LC) and, thus, attractive for the development of high-performing easily processable applications in biology and “green” organic electronics. In this work, singular temperatures connected to charge transport mechanism transitions in a PBI-W+LC derivative are determined with high accuracy by means of temperature-dependent photocurrent studies. These singular temperatures include not only the ones observed at 60 and 110 °C, corresponding to phase transition temperatures from crystalline to liquid-crystalline (LC) and from LC to the isotropic phase, respectively, as confirmed by differential scanning calorimetry (DSC), but also a transition at 45 °C, not observed by DSC. By analyzing the photocurrent dependence simultaneously on temperature and on light intensity, this transition is interpreted as a change from monomolecular to bimolecular recombination. These results might be useful for other semiconducting photogenerating materials, not necessarily PBIs or even organic semiconductors, which also show transport behavior changes at singular temperatures not connected with structural or phase transitions.

ISSP Position Stand: Career Development and Transitions of Athletes

The ISSP Position Stand on Career Development and Transitions of Athletes draws attention to viewing athletes from the perspective of their career development and their broader historical and socio‐cultural contexts. The particular focus of this paper is on career transitions as turning phases in career development. Successfully coping with transitions both within and outside of sport allows greater opportunity for an athlete to live a long and successful life in sport as well as being able to adjust effectively to the post‐career. Alternatively, failure in coping with a transition is often followed by negative consequences (e.g., premature dropout from sport, neuroses, alcohol/drug abuse, etc.). Therefore, helping athletes prepare for and/or cope with career transitions should be of primary concern for coaches, managers, athletes’ parents, and sport psychology consultants. In this paper we emphasize the role of contextual factors in career development/transition research and practice. Based on the literature review, we propose six statements and related recommendations for athletes and their significant others, as well as for researchers and consultants

Scenarios Assessment and Transitions towards a Sustainable Euro-Mediterranean in 2030. MEDPRO Policy Paper No. 9, July 2013

In the aftermath of the 2011 Arab uprisings in the southern and eastern Mediterranean, the region has reached a turning point in its history, presenting as many opportunities as challenges. The European Union itself is facing challenging conditions following the financial and economic crises that have hit its periphery. This MEDPRO Policy Paper examines and assesses various possible scenarios that could play out in EU-Mediterranean relations over the next two decades and offers recommendations towards long-term sustainable socio-economic development in the region.

Algeria's Failed Transitions to a Sustainable Polity: Coming to yet another crossroads. MEDPRO Technical Report No. 8/October 2011

Algeria is so far the only country in North Africa not to have experienced sustained mass protests calling for political change. The government in Algiers has by no means remained indifferent to the groundbreaking events in neighbouring countries, but it is responding to this sweeping wave of change at its own pace. This paper argues that, despite its apparent stability, the Algerian polity suffers from underlying currents of instability that risk undermining the long-term sustainability of the state. It identifies the failure of the country’s political and economic transitions and its implications as the most serious challenge confronting the Algerian state today. Unless a) the process of democratic transition that was initiated in 1989 is refined and put back on track, leading to the advent and consolidation of the rule of law, popular enfranchisement and total civilian control of the military; and b) the efforts to diversify the economy away from hydrocarbons are intensified and made more coherent, Algeria will remain susceptible to future instability. This is all the more pertinent given that the country is heading towards a crossroads where the issue of generational transition will also become imperative for the current leadership to deal with.

Socio-technical transitions and policy change - Advocacy coalitions in Swiss energy policy

Policies and politics are an integral part of socio-technical transitions but have not received much attention in the transitions literature so far. Drawing on the advocacy coalition framework, our paper addresses this gap with a study on actors and coalitions in Swiss energy policy. Our results show that advocacy coalitions in Switzerland have largely remained stable despite the Fukushima shock. However, heterogeneity of beliefs has increased and in 2013, even a majority of actors expressed their support for the energy transition – an indication that major policy change might be ahead. It seems that in socio-technical transitions, changes in the policy issue and in the actor base also work toward policy change, next to changes in core beliefs. We make suggestions how the advocacy coalition framework can inform analysis and theory building in transition studies. We also present first ideas about the interplay of socio-technical systems and policy systems.

Transitions to kindergarten in American schools /

"Contract no. LC88089001."

Evaluation of flared outlet transitions : hydraulic model investigation /

"June 1972."

Shock induced transitions. final report /

"PNE-112F(Pt. II); Nuclear Explosions and peaceful applications."

Shock induced transitions, final report /

"Issued: June 28, 1963"--Cover ; "February 1, 1963"--Title page.