The International Financial Crisis: an Expert Survey

The advent of the international financial crisis, and of its effects on the economy, all the world now face the question how to manage the crisis and what measures to implement to restore a normal condition. In this paper we present and discuss the results and implications of an international expert survey. Our target is to understand the perception with regards to several aspects of the international financial crisis and some possible future implications for policy makers’ authorities.international financial crisis; subprime; expert survey

Requirements-driven Social Adaptation: Expert Survey

Self-adaptation empowers systems with the capability to meet stakeholders’ requirements in a dynamic environment. Such systems autonomously monitor changes and events which drive adaptation decisions at runtime. Social Adaptation is a recent kind of requirements-driven adaptation which enables users to give a runtime feedback on the success and quality of a system’s configurations in reaching their requirements. The system analyses users’ feedback, infers their collective judgement and then uses it to shape its adaptation decisions. [Question/problem] However, there is still a lack of engineering mechanisms to guarantee a correct conduction of Social Adapta- tion. [Principal ideas/results] In this paper, we conduct a two-phase Expert Sur- vey to identify core benefits, domain areas and challenges for Social Adaptation. [Contribution] Our findings provide practitioners and researchers in adaptive systems engineering with insights on this emerging role of users, or the crowd, and stimulate future research to solve the open problems in this area

Expert survey in cases of illegal hunt

Příspěvek pojednává o zjišťování skutečností u případů neoprávněného lovu zvěře, tedy pytláctví. Základními otázkami jsou definice neoprávněného lovu zvěře, určení postupu při zjišťování základních skutečností a stanovení výše škody na zvěři. Pro stanovení postupu při znaleckém zjišťování se vycházelo z obecných zásad soudního inženýrství (Bradáč 1999), platných právních předpisů a metodik oceňování zvěře (Feuereisel 2000; Novák 2003; Chrbját 2012). Problematika postupu u znaleckého zjišťování u případů neoprávněného lovu zvěře není v České republice zpracovaná a ucelená. Tento příspěvek je součástí autorovy disertační práce s názvem „Návrh metodiky pro oceňování živé a usmrcené zvěře“.The work is assessing cases of illegal hunts of game in expert activities. The basic questions are definition of illegal hunting, the procedure for determining the identifications of the facts and determining of amount of damage. The source for determining of expert procedure were the general principles of Forensic Engineering (Bradac 1999), valid legislation and game valuation methods (Feuereisel 2000, Novak 2003, Chrbjat 2012). The procedure for expert detection in cases of illegal hunting in the Czech Republic is not processed and integrated. This article is component of author’s dissertation thesis entitles “Design methodology for the valuation of live and killed game”

Approaches Used in Organic and Low Input Food Processing – Impact on Food Quality and Safety. Results of a delphi survey from an expert consultation in 13 European Countries.

The overall objective of the subproject on processing, where the Delphi expert survey was an important task, is “to develop of a framework for the design of “minimum” and “low input” processing strategies, which guarantee food quality and safety.” It should support the overall aim of the integrated QLIF Project (Quality of Low-Input Food) in improving quality, ensuring safety and reducing costs along the European organic and “low input” food supply chains through research, dissemination and training activities. The method chosen was the Delphi method. The work was carried out in the form of a two step Delphi survey. In the first round 250 experts in 13 countries in Europe were involved, and were asked to respond to a standardised questionnaire in October and November 2004 and the second round from March to May 2005. The Delphi expert survey was designed in such a way that the most important and currently discussed aspects regarding organic food processing have been taken up. 120 experts from 13 countries (Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Great Britain, Italy, Netherlands, Slovakia, Spain, and Switzerland) answered the first round and 83 experts from 13 countries answered the second round. Based on the experiences from other EU projects (Hamm et al. 2002), a classification was made with regard to the development stage of the country in the organic market development

The Emerging Role of E-Agribusiness - State of the Art and Perspectives in Germany

The aim of this paper is to describe and analyse the emerging role of electronic agribusiness and the corresponding consequences in Germany. The study was carried out as a consecutive step by step procedure, including empirical surveys in farm and agribusiness small and medium size enterprises, accompanied by case studies in agribusiness firms, and a technology assessment expert survey. The results indicate that internet penetration on farm and agribusiness enterprise levels is rather high, but currently information and communication activities clearly dominate over commercial business activities. The case studies show that the internal communication changed significantly due to the implementation of internet applications like emailing, newsgroups, periodic information sheets and video-conferencing. Additionally, external communication changes according to the availability of internet features, e.g. suppliers of parts established internet networks for co-ordinated sales activities. The technology assessment expert survey indicates a gain in importance for pre- and after-sales services and communication activities by using internet technologies. Conclusions are - among others - an increasing importance of e-agribusiness and correspondingly an acceleration of structural change, but low or no expected effects on ecological parameters and on the labour market.E-Business, E-Agribusiness, Technology assessment, Survey, Germany, Agribusiness,

Systematic mapping of power system models: Expert survey

The power system is one of the main subsystems of larger energy systems. It is a complex system in itself, consisting of an ever-changing infrastructure used by a large number of actors of very different sizes. The boundaries of the power system are characterised by ever-evolving interfaces with equally complex subsystems such as gas transport and distribution, heating and cooling, and, increasingly, transport. The situation is further complicated by the fact that electricity is only a carrier, able to fulfil demand for such things as lighting, heat or mobility. One specific and fundamental feature of the electricity system is that demand and generation must match at any time, while satisfying technical and economic constraints. In most of the world’s power systems, only relatively small quantities of electricity can be stored, and only for limited periods of time. A detailed analysis of supply and demand is thus needed for short time intervals. Mathematical models facilitate power system planning, operation, transmission and distribution, demonstrating problems that need to be solved over different timescales and horizons. The use of modelling to understand these processes is not only vital for the system’s direct actors, i.e. the companies involved in the generation, trade, transmission, distribution and use of electricity, but also for policy-makers and regulators. Power system models can provide evidence to support policy-making at European Union, Member State and Regional level. As a consequence of the growth in computing power, mathematical models for power systems have become more accessible. The number of models available worldwide, and the degree of detail they provide, is growing fast. A proper mapping of power system models is therefore essential in order to: - provide an overview of power system models and their applications available in, or used by, European organisations; - analyse their modelling features; - identify modelling gaps. Few reviews have been conducted to date of the power system modelling landscape. The mission of the Knowledge for the Energy Union Unit of the Joint Research Centre (JRC) is to support policies related to the Energy Union by anticipating, mapping, collating, analysing, quality checking and communicating all relevant data/knowledge, including knowledge gaps, in a systematic and digestible way. This report therefore constitutes: - From the energy modelling perspective, a useful mapping exercise that could help promote knowledge-sharing and thus increase efficiency and transparency in the modelling community. It could trigger new, unexplored avenues of research. It also represents an ideal starting point for systematic review activities in the context of the power system. - From the knowledge management perspective, a useful blueprint to be adopted for similar mapping exercises in other thematic areas. Finally, this report is aligned with the objectives of the European Commission's Competence Centre on Modelling, (1) launched on 26 October 2017 and hosted by the JRC, which aims to promote a responsible, coherent and transparent use of modelling to support the evidence base for European Union policies. In order to meet the objectives of this report, an online survey was used to collect detailed and relevant information about power system models. The participants’ answers were processed to categorise and describe the modelling tools identified. The survey, conducted by the Knowledge for the Energy Union Unit of the JRC, comprised a set of questions for each model to ascertain its basic information, its users, software characteristics, modelling properties, mathematical description, policy-making applications, selected references, and more. The survey campaign was organised in two rounds between April and July 2017. 228 surveys were sent to power system experts and organisations, and 82 questionnaires were completed. The answers were processed to map the knowledge objectively. (2) The main results of the survey can be summarised as follows: - Software-related features: about two thirds of the models require third-party software such as commercial optimisation solvers or off-the-shelf software. Only 14% of the models are open source, while 11% are free to download. - Modelling-related features: models are mostly defined as optimisation problems (78%) rather than simulation (33%) or equilibrium problems (13%). 71% of the models solve a deterministic problem while 41% solve probabilistic or stochastic problems. - Modelled power system problems: the economic dispatch problem is the most commonly modelled problem with a share of approximately 70%, followed by generation expansion planning, unit commitment, and transmission expansion planning, with around 40‒43% each. Most of the models (57%) have non-public input data while 31% of models use open input data. - Modelled technologies: hydro, wind, thermal, storage and nuclear technologies are widely taken into account, featuring in around 83‒94% of models. However, HVDC, wave tidal, PSTs, and FACTS (3) are not often found unless the analysis is specifically performed for those technologies. - Applicability in the context of European energy policy: more than half of the mapped models (56%) were used to answer a specific policy question. Of the five Energy Union strategic dimensions, integration of the European Union internal energy market was addressed the most often (27%), followed by climate action (23%), research, innovation and competitiveness (21%), and energy efficiency (15%). This report includes JRC recommendations based on the results of the survey, on future research avenues for power system modelling and its applicability within the Energy Union strategic dimensions. More attention should be paid, for example, to model uncertainty features, and collaboration among researchers and practitioners should be promoted to intensify research into specific power system problems such as AC (4) optimal power flow. The report includes factsheets for each model analysed, summarising relevant characteristics based on the participants’ answers. While this report represents a scientific result per se, one of the expected (and welcomed) outcomes of this mapping exercise is to raise awareness of power system modelling activities among European policy makers.JRC.C.7-Knowledge for the Energy Unio

Assessing the Measurement of Policy Positions in Expert Surveys

Expert surveys provide a common means for assessing parties' policy positions on latent dimensions. These surveys often cover a wide variety of parties and issues, and it is unlikely that experts are able to assess all parties equally well across all issues. While the existing literature using expert surveys acknowledges this fact, insufficient attention has been paid to the variance in the quality of measurement across issues and parties. In this paper, we first discuss the nature of the measurement problem with respect to expert surveys and then propose methods borrowed from the organizational psychology and medical fields to assess the ability of experts to assess where parties stand on particular dimensions. While we apply our technique to one particular study, the Chapel Hill Expert Survey, the method can be applied to any expert survey. Finally, we propose a simple non-parametric bootstrapping procedure that allows researchers to assess the effects of expert survey measurement error in analyses that use them