@article{Kellner2016, author = {Kellner, Florian}, title = {Allocating greenhouse gas emissions to shipments in road freight transportation: Suggestions for a global carbon accounting standard}, series = {Energy Policy}, volume = {98}, journal = {Energy Policy}, doi = {10.1016/j.enpol.2016.09.030}, pages = {565 -- 575}, year = {2016}, abstract = {The European Norm EN 16258 was published in 2012 to provide a common methodology for the calculation and declaration of energy consumption and greenhouse gas emissions related to any transport operation. The objective was to offer a pragmatic and scientifically-acceptable approach that allows a wide group of users to prepare standardized, accurate, credible, comparable, and verifiable energy consumption and emission declarations. However, in its current form, EN 16258 contains gaps and ambiguities, and leaves room for interpretation, which makes comparisons of supply chains difficult. This research aims to overcome the shortcomings in the domain of allocating emissions from road freight transport operations to single shipments. Based on a discussion of emission drivers and the results of numerical experiments comparing the allocation vectors created by the EN 16258 allocation rules with those generated by the Shapley value, which is claimed to be the benchmark, 'distance' is identified as the single most useful unit for bridging the trade-off between accuracy and simplicity better than the other recommended allocation schemes. Thus, this paper claims that future versions of EN 16258 should only allow the allocation unit 'distance.' This will promote the accurateness, simplicity, consistency, transparency, and comparability of emission declarations.}, language = {en} } @article{Kellner2016, author = {Kellner, Florian}, title = {Analyse logistischer Systeme mittels Online-Navigationsdiensten ? Bessere Planung auf Grundlage besserer Daten}, series = {HMD - Praxis der Wirtschaftsinformatik}, volume = {53}, journal = {HMD - Praxis der Wirtschaftsinformatik}, doi = {10.1365/s40702-016-0245-6}, pages = {894 -- 905}, year = {2016}, abstract = {Online-Navigationsdienste erm{\"o}glichen die Planung einer Reise von einem Start- zu einem Ziel-Ort. Die Berechnung von Reisedauer und Streckenl{\"a}nge erfolgt auf Grundlage eines detaillierten Straßennetzes und unter Ber{\"u}cksichtigung Orts- und Zeit-typischer Verkehrsaufkommen. Dieser Beitrag zeigt, inwiefern Online-Navigationsdienste die Planung und Analyse logistischer Systeme unterst{\"u}tzen k{\"o}nnen. Er thematisiert insbesondere die Qualit{\"a}t der zur Verf{\"u}gung gestellten Verkehrsinfrastrukturdaten und hebt die komparativen Vorteile des Einsatzes von Online-Navigationsdiensten im Vergleich zu ‚herk{\"o}mmlichen' Verkehrsinformationsquellen hervor. Ein Anwendungsfall, bei dem die durch Transportaktivit{\"a}ten verursachten CO2-Emissionen eines G{\"u}ternahverkehrsnetzes untersucht werden, verdeutlicht die gewonnenen Erkenntnisse.}, language = {de} } @article{PecqueurMaltenbergerPetrukhinaetal.2016, author = {Pecqueur, S{\´e}bastien and Maltenberger, Anna and Petrukhina, Marina A. and Halik, Marcus and Jaeger, Arndt and Pentlehner, Dominik and Schmid, G{\"u}nter}, title = {Bismut-haltige p-Dotanden mit großer Bandl{\"u}cke f{\"u}r optoelektronische Anwendungen}, series = {Angewandte Chemie}, journal = {Angewandte Chemie}, number = {128(35)}, publisher = {Wiley-VCH Verlag}, address = {Weinheim}, year = {2016}, abstract = {Zehn neue p-Dotanden f{\"u}r die Leitf{\"a}higkeitsdotierung von organischen Halbleitern wurden identifiziert. Der wesentliche Vorteil der elektrophilen Tris(carboxylato)-Bismut(III)-Verbindungen ist die niedrige Absorption der damit dotierten Schichten. Diese Eigenschaft zusammen mit ihren niedrigen Herstellungskosten sowie der guten Verdampfbarkeit und Stabilit{\"a}t macht diese Dotanden sehr attraktiv f{\"u}r Anwendungen in der organischen Elektronik.}, language = {de} } @article{LazarJarre2016, author = {Lazar, Markus and Jarre, F.}, title = {Calibration by Optimization Without Using Derivatives}, series = {Optimization and Engineering}, volume = {2016}, journal = {Optimization and Engineering}, number = {17/4}, publisher = {Springer}, pages = {833 -- 860}, year = {2016}, abstract = {Applications in engineering frequently require the adjustment of certain parameters. While the mathematical laws that determine these parameters often are well understood, due to time limitations in every day industrial life, it is typically not feasible to derive an explicit computational procedure for adjusting the parameters based on some given measurement data. This paper aims at showing that in such situations, direct optimization offers a very simple approach that can be of great help. More precisely, we present a numerical implementation for the local minimization of a smooth function f:Rn→R subject to upper and lower bounds without relying on the knowledge of the derivative of f. In contrast to other direct optimization approaches the algorithm assumes that the function evaluations are fairly cheap and that the rounding errors associated with the function evaluations are small. As an illustration, this algorithm is applied to approximate the solution of a calibration problem arising from an engineering application. The algorithm uses a Quasi-Newton trust region approach adjusting the trust region radius with a line search. The line search is based on a spline function which minimizes a weighted least squares sum of the jumps in its third derivative. The approximate gradients used in the Quasi-Newton approach are computed by central finite differences. A new randomized basis approach is considered to generate finite difference approximations of the gradient which also allow for a curvature correction of the Hessian in addition to the Quasi-Newton update. These concepts are combined with an active set strategy. The implementation is public domain; numerical experiments indicate that the algorithm is well suitable for the calibration problem of measuring instruments that prompted this research. Further preliminary numerical results suggest that an approximate local minimizer of a smooth non-convex function f depending on n≤300 variables can be computed with a number of iterations that grows moderately with n.}, language = {en} } @article{HopfeStuckiMarshalletal.2016, author = {Hopfe, M. and Stucki, G. and Marshall, R. and Twomey, C. and {\"U}st{\"u}n, T.B. and Prodinger, Birgit}, title = {Capturing patients' needs in casemix: a systematic literature review on the value of adding functioning information in reimbursement systems}, series = {BMC Health Services Research}, volume = {16}, journal = {BMC Health Services Research}, pages = {40}, year = {2016}, abstract = {Background Contemporary casemix systems for health services need to ensure that payment rates adequately account for actual resource consumption based on patients' needs for services. It has been argued that functioning information, as one important determinant of health service provision and resource use, should be taken into account when developing casemix systems. However, there has to date been little systematic collation of the evidence on the extent to which the addition of functioning information into existing casemix systems adds value to those systems with regard to the predictive power and resource variation explained by the groupings of these systems. Thus, the objective of this research was to examine the value of adding functioning information into casemix systems with respect to the prediction of resource use as measured by costs and length of stay. Methods A systematic literature review was performed. Peer-reviewed studies, published before May 2014 were retrieved from CINAHL, EconLit, Embase, JSTOR, PubMed and Sociological Abstracts using keywords related to functioning ('Functioning', 'Functional status', 'Function*, 'ICF', 'International Classification of Functioning, Disability and Health', 'Activities of Daily Living' or 'ADL') and casemix systems ('Casemix', 'case mix', 'Diagnosis Related Groups', 'Function Related Groups', 'Resource Utilization Groups' or 'AN-SNAP'). In addition, a hand search of reference lists of included articles was conducted. Information about study aims, design, country, setting, methods, outcome variables, study results, and information regarding the authors' discussion of results, study limitations and implications was extracted. Results Ten included studies provided evidence demonstrating that adding functioning information into casemix systems improves predictive ability and fosters homogeneity in casemix groups with regard to costs and length of stay. Collection and integration of functioning information varied across studies. Results suggest that, in particular, DRG casemix systems can be improved in predicting resource use and capturing outcomes for frail elderly or severely functioning-impaired patients. Conclusion Further exploration of the value of adding functioning information into casemix systems is one promising approach to improve casemix systems ability to adequately capture the differences in patient's needs for services and to better predict resource use.}, language = {en} } @article{TempelAslanFrings2016, author = {Tempel, Tobias and Aslan, Alp and Frings, Christian}, title = {Competition dependence of retrieval-induced forgetting in motor memory}, series = {Memory \& Cognition volume}, volume = {44}, journal = {Memory \& Cognition volume}, number = {4}, pages = {671 -- 680}, year = {2016}, abstract = {In two experiments, we examined the competition dependence of retrieval-induced forgetting (RIF) in motor memory. Participants learned sequential finger movements as responses to letter stimuli. The learning phase comprised two parts. In both parts, half of the motor sequences were to be executed at one of two locations (the left or right side of a keyboard) by pressing the corresponding response keys. Retrieval practice of half of the motor sequences at one location induced forgetting of the nonpracticed motor sequences at that location. However, RIF was prevented in Experiment 1 when retrieval practice took place before the nonpracticed items had even been encoded. In Experiment 2, RIF was prevented by intentionally forgetting the nonpracticed motor sequences prior to retrieval practice. These results suggest that precluding competition by related items during retrieval practice precluded them from being affected by RIF. The present findings support an inhibitory account and speak against the alternative assumptions that associative blocking or a mental context change causes RIF.}, language = {en} } @article{Kellner2016, author = {Kellner, Florian}, title = {Exploring the impact of traffic congestion on CO2 emissions in freight distribution networks}, series = {Logistics Research}, volume = {9}, journal = {Logistics Research}, number = {1}, doi = {10.1007/s12159-016-0148-5}, pages = {21}, year = {2016}, abstract = {This research quantifies the impact that regular road traffic congestion has on the CO2 emissions of a real-world distribution network, and it studies the consequences when the number of distribution centers changes. For this purpose, this study makes use of a network model allowing for a detailed representation of all relevant transport operations, including production flows between factories and distribution centers, line haul shipments between distribution centers and customers, and round/delivery trips between transshipment points and retailer locations for the last mile. The processed trip and traffic information does not rely on standard traffic data collection approaches, such as interviews, in situ technologies, or floating car data, but the road traffic data are retrieved from an online navigation service, such as Bing Maps, Google Maps, Inrix, Here, and TomTom. This study proves that online navigation services may considerably contribute to future research projects analyzing CO2 sensitivities and greenhouse gas cutting opportunities in logistics networks.}, language = {en} } @article{ProdingerTennantStuckietal.2016, author = {Prodinger, Birgit and Tennant, A. and Stucki, G. and Cieza, A. and {\"U}st{\"u}n, T.B.}, title = {Harmonizing routinely collected health information for strengthening quality management in health systems: requirements and practice}, series = {Journal of Health Services Research \& Policy}, volume = {21}, journal = {Journal of Health Services Research \& Policy}, number = {4}, pages = {223 -- 228}, year = {2016}, abstract = {Objective Our aim was to specify the requirements of an architecture to serve as the foundation for standardized reporting of health information and to provide an exemplary application of this architecture. Methods The World Health Organization's International Classification of Functioning, Disability and Health (ICF) served as the conceptual framework. Methods to establish content comparability were the ICF Linking Rules. The Rasch measurement model, as a special case of additive conjoint measurement, which satisfies the required criteria for fundamental measurement, allowed for the development of a common metric foundation for measurement unit conversion. Secondary analysis of data from the North Yorkshire Survey was used to illustrate these methods. Patients completed three instruments and the items were linked to the ICF. The Rasch measurement model was applied, first to each scale, and then to items across scales which were linked to a common domain. Results Based on the linking of items to the ICF, the majority of items were grouped into two domains, Mobility and Self-care. Analysis of the individual scales and of items linked to a common domain across scales satisfied the requirements of the Rasch measurement model. The measurement unit conversion between items from the three instruments linked to the Mobility and Self-care domains, respectively, was demonstrated. Conclusions The realization of an ICF-based architecture for information on patients' functioning enables harmonization of health information while allowing clinicians and researchers to continue using their existing instruments. This architecture will facilitate access to comprehensive and consistently reported health information to serve as the foundation for informed decision-making.}, language = {en} } @article{GrillMuellerMansmann2016, author = {Grill, Eva and M{\"u}ller, Martin and Mansmann, Ulrich}, title = {Health-exploring complexity: an interdisciplinary systems approach HEC 2016}, series = {European journal of epidemiology}, journal = {European journal of epidemiology}, number = {31}, editor = {Springer Verlag,}, year = {2016}, abstract = {Health is a complex process with potentially interacting components from the molecular to the societal and environmental level. Adequate research designs and data analysis methods are needed to improve our understanding of this complexity, to ultimately derive high quality evidence to inform patients, health professionals, and health policy decision makers. Also, effective patient-centred health care has to address the complexity of health, functioning, and disability, not only by implementing interventions, but also by using information technologythatrepresentsthecomplexityofhealthcaretoinformallactors. Given this background, we developed the concept of our conference HEC2016 as an interdisciplinary European event in beautiful Bavaria, in the city of Mu ¨nchen. Quite ironically this is the place, where William of Ockham, whose ideas of parsimony are the very opposite of complexity, accused of heresy, spent 17 years under the protection of the Bavarian King Ludwig IV. Furthermore, our local public health hero Max von Pettenkofer (1818-1901) contributed a lot to the basic systemic understanding of health, especially the relevance of a healthy environment. Under the joint theme of health as a complex system we joined the activities of five scientific disciplines: Medical Informatics, Medical Biometry, Bioinformatics, Epidemiology and Health Data Management. The mission behind this interdisciplinary effort was to serve as an important scientific forum for the exchange of new ideas and applications to strengthen health sciences on a national and international level. The analysis of health as a complex system opens needed perspectives on a challenging reality: filtering current hypotheses, resolving controversies, and tailoring interventions to the need of the individual within a health system environment. The conference encouraged the dialogue of the disciplines in order to advance our understanding of health and to decrease burden of disease. HEC2016 brought together the annual conferences of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), the German Society for Epidemiology (DGEpi), the International Epidemiological Association- European Region (IEA-EEF) and the European Federation for Medical Informatics Association (EFMI, MIE 2016). HEC2016 took place in Mu ¨nchen, Germany, in the main building of the Ludwig-Maximilians-Universita ¨t (LMU) from 28 August to 2 September 2016 under the auspices of the Institute for MedicalInformationProcessing,BiometryandEpidemiologyofLMU. The conference received 832 contributions for oral and poster presentation (Table 1). Fourteen percent of them were from outside Europe with the largest group of 10 \% from Asia (Table 2). Scientific program committees and reviewers selected 408 submissions as oral contributions and 303 for poster presentations. The program was surrounded by twelve tutorials held by international renowned scientists and covered a broad spectrum from innovative biostatistical and epidemiological methods to tutorials in application of innovative software, scientific writing and data protection issues. Over 50 panel discussions and workshops allowed in-depth exchange of ideas on specific topics and underscored the interactive nature of HEC2016. A special focus of HEC2016 was on the promotion of young scientists from all disciplines whose participation was supported by numerous travel grants. We would like to express our deepest gratitude to all the colleagues who supported us as speakers, committee members and reviewers, lent us a hand before, during and after the conference, gave critical but friendly comments at all stages of the preparations, supported us by providing coffee, audience or Butterbrezen, and specifically to those who submitted contributions to the conference and attended the conference and its many tutorials, lectures and sessions. We extend our gratitude to the Deutsche Forschungsgemeinschaft for generous financial support (grant no. GR 3608/4-1). Last not least we would like to thank our families who allowed us to spend most of our weekends with organizing this conference, to William of Ockham for lending us his razor (from time to time) and to Max von Pettenkofer for guidance.}, language = {en} } @article{DuerSteinerStofferetal.2016, author = {D{\"u}r, M. and Steiner, G. and Stoffer, M.A. and Fialka-Moser, V. and Kautky-Willer, A. and Dejaco, C. and Ekmekcioglu, C. and Prodinger, Birgit and Binder, A. and Smolen, J. and Stamm, T. A.}, title = {Initial evidence for the link between activities and health: Associations between a balance of activities, functioning and serum levels of cytokines and C-reactive protein}, series = {Psychoneuroendocrinology}, volume = {65}, journal = {Psychoneuroendocrinology}, pages = {138 -- 148}, year = {2016}, abstract = {Growing evidence shows interrelations of psychological factors, neurological and immunological processes. Therefore, constructs like a balance of activities, the so called "occupational balance", could also have biological correlates. The aim of this study was to investigate potential associations between occupational balance, functioning, cytokines and C-reactive protein (CRP) in patients suffering from a chronic inflammatory disease like rheumatoid arthritis (RA) and healthy people. Moreover, we wanted to explore potential differences in gender and employment status. A descriptive study in patients with RA and healthy people was conducted using the Occupational Balance-Questionnaire (OB-Quest) and the Short-Form 36 Health Survey (SF-36). Serum levels of cytokines, such as interleukin 6 (IL-6) and 8 (IL-8), interferon alpha (INFα), tumour necrosis factor alpha (TNFα), rheumatoid factor (RF) and of CRP were measured. Descriptive statistics, as well as Mann-Whitney U tests and Spearmen's rank correlation coefficients (rs) were calculated. One-hundred-thirty-two patients with RA and 76 healthy people participated. Occupational balance was associated with functioning, cytokines and CRP. The strongest associations were identified in the unemployed healthy-people sample with cytokines and CRP being within the normal range. For example, the OB-Quest item challenging activities was associated with IL-8 (rs = - 0.63, p = 0.04) and the SF-36 sub-scale bodily pain was associated with IFNα (rs = - 0.69, p = 0.02). The items rest and sleep (rs = - 0.71, p = 0.01) and variety of different activities (rs = - 0.74, p < 0.01) correlated with the SF-36 sub-scale social functioning. Employed and unemployed people differed in their age and CRP levels. Additionally, gender differences were found in two OB-Quest items in that fewer women were able to adapt their activities to changing living conditions and fewer men were overstressed. In conclusion, we found preliminary biological evidence for the link between occupation and health in that the concepts encompassed in the construct of occupational balance were associated with functioning, cytokines and CRP.}, language = {en} }