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HAW Hamburg

UniversityHamburg, Hamburg, Germany

Research output, citation impact, and the most-cited recent papers from HAW Hamburg (Germany). Aggregated across the NobleBlocks index of 300M+ scholarly works.

Total works
12.0K
Citations
252.5K
h-index
206
i10-index
4.2K
Also known as
Fachhochschule HamburgHAW HamburgHamburg University of Applied SciencesHochschule für Angewandte Wissenschaften HamburgHochschule für Angewandte Wissenschaften Hamburg (HAW Hamburg)

Top-cited papers from HAW Hamburg

Prospects for observing and localizing gravitational-wave transients with Advanced LIGO, Advanced Virgo and KAGRA
B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy +4 more
2018· Living Reviews in Relativity1.2Kdoi:10.1007/s41114-018-0012-9

We present possible observing scenarios for the Advanced LIGO, Advanced Virgo and KAGRA gravitational-wave detectors over the next decade, with the intention of providing information to the astronomy community to facilitate planning for multi-messenger astronomy with gravitational waves. We estimate the sensitivity of the network to transient gravitational-wave signals, and study the capability of the network to determine the sky location of the source. We report our findings for gravitational-wave transients, with particular focus on gravitational-wave signals from the inspiral of binary neutron star systems, which are the most promising targets for multi-messenger astronomy. The ability to localize the sources of the detected signals depends on the geographical distribution of the detectors and their relative sensitivity, and [Formula: see text] credible regions can be as large as thousands of square degrees when only two sensitive detectors are operational. Determining the sky position of a significant fraction of detected signals to areas of 5-[Formula: see text] requires at least three detectors of sensitivity within a factor of [Formula: see text] of each other and with a broad frequency bandwidth. When all detectors, including KAGRA and the third LIGO detector in India, reach design sensitivity, a significant fraction of gravitational-wave signals will be localized to a few square degrees by gravitational-wave observations alone.

Origin and theoretical basis of new public management
G Gruening
2001· International Public Management Journal895doi:10.1016/s1096-7494(01)00041-1

The article describes the characteristics of New Public Management (NPM) and gives a cursory overview of the development of the behavioral-administrative sciences and their relation to NPM. A descriptive model of the behavioral-administrative sciences is developed that pits three internally consistent scientific worldviews that are incommensurable to each other. From this, the theoretical origins of NPM can be traced to a variety of theoretical perspectives. Although the special mix of characteristics of NPM is new, it does not represent a paradigm change. Indeed, it is improbable that there will ever be one paradigm for the behavioral-administrative sciences; and without an accepted paradigm, a paradigm change is not really possible.

Shape descriptors for non-rigid shapes with a single closed contour
Longin Jan Latecki, Rolf Lakämper, T. Eckhardt
2002837doi:10.1109/cvpr.2000.855850

The Core Experiment CE-Shape-1 for shape descriptors performed for the MPEG-7 standard gave a unique opportunity to compare various shape descriptors for non-rigid shapes with a single closed contour. There are two main differences with respect to other comparison results reported in the literature: (1) For each shape descriptor the experiments were carried out by an institute that is in favor of this descriptor. This implies that the parameters for each system were optimally determined and the implementations were thoroughly rested. (2) It was possible to compare the performance of shape descriptors based on totally different mathematical approaches. A more theoretical comparison of these descriptors seems to be extremely hard. In this paper we report on the MPEG-7 Core Experiment CE-Shape.

Sustainable Development Goals and sustainability teaching at universities: Falling behind or getting ahead of the pack?
Walter Leal Filho, Chris Shiel, Arminda Paço, Mark Mifsud +4 more
2019· Journal of Cleaner Production794doi:10.1016/j.jclepro.2019.05.309

The fact that the world community is engaged in pursuing the Sustainable Development Goals (SDGs) means that an unrivalled opportunity is provided to universities, both in respect of teaching and in research, on individual SDGs, as well as in pursuing their “third mission” linking up with external stakeholders and society. However, not many universities have realised that and many are falling behind. This paper explores the many advantages of the introduction of the SDGs into teaching and suggests that it can catalyse the engagement of students in Higher Education Institutions (HEI) with the concepts of sustainability. The paper fills in a research gap by surveying the current state of the art regarding the theme, presenting current data outlining the extent to which HEI are using SDGs to support their sustainability work. The reasons why some institutions are currently not engaging is also shown. The paper, which consists of a worldwide survey deployed to collect data on the SDGs and sustainability teaching at universities, concludes by providing some recommendations aimed at encouraging further engagement of HEI in incorporatingSDGs as part of their teaching programs. This research is unique in the sense that it provides for the first time offers an overview of the level of emphasis selected universities currently place on the SDGs. Finally, it provides a contribution to current state of knowledge by outlining some actions universities may take, to move forward with their implementation.

Root traits as drivers of plant and ecosystem functioning: current understanding, pitfalls and future research needs
Grégoire T. Freschet, Catherine Roumet, Louise H. Comas, Monique Weemstra +4 more
2020· New Phytologist740doi:10.1111/nph.17072

The effects of plants on the biosphere, atmosphere and geosphere are key determinants of terrestrial ecosystem functioning. However, despite substantial progress made regarding plant belowground components, we are still only beginning to explore the complex relationships between root traits and functions. Drawing on the literature in plant physiology, ecophysiology, ecology, agronomy and soil science, we reviewed 24 aspects of plant and ecosystem functioning and their relationships with a number of root system traits, including aspects of architecture, physiology, morphology, anatomy, chemistry, biomechanics and biotic interactions. Based on this assessment, we critically evaluated the current strengths and gaps in our knowledge, and identify future research challenges in the field of root ecology. Most importantly, we found that belowground traits with the broadest importance in plant and ecosystem functioning are not those most commonly measured. Also, the estimation of trait relative importance for functioning requires us to consider a more comprehensive range of functionally relevant traits from a diverse range of species, across environments and over time series. We also advocate that establishing causal hierarchical links among root traits will provide a hypothesis-based framework to identify the most parsimonious sets of traits with the strongest links on functions, and to link genotypes to plant and ecosystem functioning.

Training-Induced Brain Structure Changes in the Elderly
Janina Boyke, Joenna Driemeyer, Christian Gaser, Christian Büchel +1 more
2008· Journal of Neuroscience687doi:10.1523/jneurosci.0742-08.2008

It has been suggested that learning is associated with a transient and highly selective increase in brain gray matter in healthy young volunteers. It is not clear whether and to what extent the aging brain is still able to exhibit such structural plasticity. We built on our original study, now focusing on healthy senior citizens. We observed that elderly persons were able to learn three-ball cascade juggling, but with less proficiency compared with 20-year-old adolescents. Similar to the young group, gray-matter changes in the older brain related to skill acquisition were observed in area hMT/V5 (middle temporal area of the visual cortex). In addition, elderly volunteers who learned to juggle showed transient increases in gray matter in the hippocampus on the left side and in the nucleus accumbens bilaterally.

The role of transformation in learning and education for sustainability
Walter Leal Filho, Schalk Raath, Boris Lazzarini, Valeria Ruiz Vargas +4 more
2018· Journal of Cleaner Production629doi:10.1016/j.jclepro.2018.07.017

Education research has acknowledged the value of transformation, which offers an opportunity for researching and rethinking how appropriate and successful educational practices may be. However, despite the role of transformation in higher education and particularly in sustainability learning, there is a paucity of studies which examine the extent to which transformation and learning on matters related to sustainable development may be integrated.\n\nBased on this perceived research need, the purpose of this article is to present how transformation in learning in education for sustainability requires the commitment of Faculty and the engament of students. To do this, a set of qualitative case studies were used in higher education institutions across seven countries (Brazil, Serbia, Latvia, South Africa, Spain, Syria, UK). The findings revealed that the concept of education for sustainable development has not been sufficiently integrated into the concept of transformation in higher education institutions. It also found that to enhance sustainability in the curricula, academics should develop collaborative approaches, and discuss how to redesign their own disciplines, and how to appreciate the epistemology and multicultural vision of sustainability, both as a topic, and as a field of education research. It was further found that reflections of the academics on their own values are crucial for developing the transformative potential of students as agents of a sustainable future. It is necessary that universities should transform to serve as models of social justice and environmental stewardship, and to foster sustainability learning.

Assessing research trends related to Sustainable Development Goals: local and global issues
Amanda Lange Sálvia, Walter Leal Filho, Luciana Brandli, Juliane Sapper Griebeler
2018· Journal of Cleaner Production573doi:10.1016/j.jclepro.2018.09.242

© 2018 Elsevier Ltd The Sustainable Development Goals agreed by the United Nations in September 2015 comprise 17 goals and 169 targets aimed at integrating matters related to sustainable development into the overall economic, environmental and social frameworks of countries. Whereas the SDGs have a global dimension, their action implementation depends on the level of priority different countries give to them, and on how sustainability issues compete with a country's main problems. The aim of this paper was to identify the main Sustainable Development Goals approached by experts from different geographic regions, according to their experience and research area, and to discuss the relation between these goals and the main local issues and challenges of each region. The methodology starts with snowball sampling to collect information from experts from all geographic regions, through contact networks of universities in different countries. With the information about the goals researched by the participating experts, an analysis of the relation between the study focus and the geographical regions of origin was conducted. A total of 266 specialists from North America, Latin America/Caribbean, Africa, Asia, Europe and Oceania participated in the survey. Based on the sample used, it can be said that there is a relation between the local problems or challenges observed in some regions and the main areas of interest of the surveyed experts, with a general emphasis on the study of goals 4, 11 and 13. Based on the data gathered, the paper presents a set of examples of positive and negative situations in the various regions, and considers the extent to which some Sustainable Development Goals are being pursued by research on a worldwide basis.

Biochemical methane potential (BMP) of solid organic substrates: evaluation of anaerobic biodegradability using data from an international interlaboratory study
F. Raposo, V. Fernández‐Cegrí, M.A. de la Rubia, R. Borja +4 more
2011· Journal of Chemical Technology & Biotechnology538doi:10.1002/jctb.2622

Abstract BACKGROUND: This paper describes results obtained for different participating research groups in an interlaboratory study related to biochemical methane potential (BMP). In this research work, all experimental conditions influencing the test such as inoculum, substrate characteristics and experimental conditions were investigated. The study was performed using four substrates: three positive control substrates (starch, cellulose and gelatine), and one raw biomass material (mung bean) at two different inoculum to substrate ratios (ISR). RESULTS: The average methane yields for starch, cellulose, gelatine and mung bean at ISR of 2 and 1 were 350 ± 33, 350 ± 29, 380 ± 42, 370 ± 36 and 370 ± 35 mL CH 4 g −1 VS added , respectively. The percentages of biotransformation of these substrates into methane were 85 ± 8, 85 ± 7, 88 ± 9, 85 ± 8 and 85 ± 8%, respectively. On the other hand, the first‐order rate constants obtained from the experimental data were 0.24 ± 0.14, 0.23 ± 0.15, 0.27 ± 0.13, 0.31 ± 0.17 and 0.23 ± 0.13 d −1 , respectively. CONCLUSION: The influence of inocula and experimental factors was nearly insignificant with respect to the extents of the anaerobic biodegradation, while the rates differed significantly according to the experimental approaches. Copyright © 2011 Society of Chemical Industry

Using the sustainable development goals towards a better understanding of sustainability challenges
Walter Leal Filho, Shiv Tripathi, José Baltazar Salgueirinho Osório de Andrade Guerra, Ricard Giné Garriga +2 more
2018· International Journal of Sustainable Development & World Ecology537doi:10.1080/13504509.2018.1505674

The United Nations General Assembly agreed and approved in September 2015 the document ‘2030 Agenda for Sustainable Development’, which contains a set of measures aiming to balance economic progress and protection of the environment, whilst at the same time remain aware of the need to address the many disparities still seen between industrialised and developing countries. The Agenda document consists of 17 Sustainable Development Goals (SDGs), which among many other tasks, intend to eradicate poverty and create better health conditions in both developed and developing countries. But despite the need for and the relevance of the SDGs, it is unclear how they may help to address present and future sustainability challenges. Based on the need to shed some light on such a relationship, this paper describes each of the SDGs, and offers an analysis of the extent to which their implementation may offer support to ongoing attempts to handle some of the pressing problems seen in pursuing sustainable development. Three case studies are presented to show in practice how best the SDGs can be handled. The paper concludes that the process of implementing the SDGs offers unrivalled opportunities to advance equal opportunity and foster economic empowerment, helping countries to promote the cause of sustainable development in their territories, hence benefiting their populations.

A review of global ocean temperature observations: Implications for ocean heat content estimates and climate change
John Abraham, Molly Baringer, Nathaniel L. Bindoff, Tim Boyer +4 more
2013· Reviews of Geophysics528doi:10.1002/rog.20022

Abstract The evolution of ocean temperature measurement systems is presented with a focus on the development and accuracy of two critical devices in use today (expendable bathythermographs and conductivity‐temperature‐depth instruments used on Argo floats). A detailed discussion of the accuracy of these devices and a projection of the future of ocean temperature measurements are provided. The accuracy of ocean temperature measurements is discussed in detail in the context of ocean heat content, Earth's energy imbalance, and thermosteric sea level rise. Up‐to‐date estimates are provided for these three important quantities. The total energy imbalance at the top of atmosphere is best assessed by taking an inventory of changes in energy storage. The main storage is in the ocean, the latest values of which are presented. Furthermore, despite differences in measurement methods and analysis techniques, multiple studies show that there has been a multidecadal increase in the heat content of both the upper and deep ocean regions, which reflects the impact of anthropogenic warming. With respect to sea level rise, mutually reinforcing information from tide gauges and radar altimetry shows that presently, sea level is rising at approximately 3 mm yr −1 with contributions from both thermal expansion and mass accumulation from ice melt. The latest data for thermal expansion sea level rise are included here and analyzed.

After citizenship: autonomy of migration, organisational ontology and mobile commons
Dimitris Papadopoulos, Vassilis S. Tsianos
2013· Citizenship Studies521doi:10.1080/13621025.2013.780736

Abstract This paper explores the relevance of the autonomy of migration approach for understanding the role of citizenship in the sovereign control of mobility. There is an insurgent configuration of ordinary experiences of mobility emerging against this regime of control. At its core is the sharing of knowledge and infrastructures of connectivity, affective cooperation, mutual support and care among people on the move. The sovereign regime of mobility control is displaced on the level on which it attempts to take hold: the everyday movements of migrants. The frenetic fixation with security is challenged by the creation of common worlds of existence; the obsession with governance is replaced by inhabiting social spaces below the radar of existing political structures. This paper attempts to contribute to a reconstruction of this mundane ontology of transmigration, an ontology which we will describe as the mobile commons of migration. Keywords: autonomy of migrationcitizenshipmobile commonsorganisationontology Acknowledgements Many of the ideas presented here were developed in conversations with our fellow traveller Hywel Bishop. We are truly grateful to him. Special thanks go to our editor, Imogen Tyler, for her insightful suggestions and encouragement and to Gabriella Alberti, Nicholas De Genova, Dagmar Diesner and Aida Ibrahim for their generous comments on our work. We would like to thank Nelli Kambouri, Brigitta Kuster, Dimitri Parsanoglou and Nico Trimiklinioti for sharing with us their thoughts about our common fieldwork. Some of the empirical and theoretical research presented here was funded by the European Commission FP7 programme MIG@NET: Transnational Digital Networks, Migration and Gender. Notes 1. See also the documentation of the Welcome to Europe network: http://w2eu.net/nobordertv/pagani-detention-center-2/pagani-detention-center/ [Accessed 1 December 2011].

Lipoprotein lipase
Martin Merkel, Robert H. Eckel, Ira J. Goldberg
2002· Journal of Lipid Research515doi:10.1194/jlr.r200015-jlr200

Lipoprotein lipase (LPL) regulates the plasma levels of triglyceride and HDL. Three aspects are reviewed. 1 ) Clinical implications of human LPL gene variations: common mutations and their effects on plasma lipids and coronary heart disease are discussed. 2 ) LPL actions in the nervous system, liver, and heart: the discussion focuses on LPL and tissue lipid uptake. 3 ) LPL gene regulation: the LPL promoter and its regulatory elements are described. -Mer-

Biogeographic Evolution of Madagascar's Microendemic Biota
Lucienne Wilmé, Steven M. Goodman, Jörg U. Ganzhorn
2006· Science490doi:10.1126/science.1122806

The endemic species richness on Madagascar, relative to landmass area, is unparalleled in the world. Many organisms on the island have restricted geographical ranges. A comprehensive hypothesis explaining the evolution of this microendemism has yet to be developed. Using an analysis of watersheds in the context of Quaternary climatic shifts, we provide a new mechanistic model to explain the process of explosive speciation on the island. River catchments with sources at relatively low elevations were zones of isolation and hence led to the speciation of locally endemic taxa, whereas those at higher elevations were zones of retreat and dispersion and hence contain proportionately lower levels of microendemism. These results provide a framework for biogeographic and phylogeographic studies, as well as a basis for prioritizing conservation actions of the remaining natural forest habitats on the island.

Shape similarity measure based on correspondence of visual parts
Longin Jan Latecki, Rolf Lakämper
2000· IEEE Transactions on Pattern Analysis and Machine Intelligence460doi:10.1109/34.879802

A cognitively motivated similarity measure is presented and its properties are analyzed with respect to retrieval of similar objects in image databases of silhouettes of 2D objects. To reduce influence of digitization noise, as well as segmentation errors, the shapes are simplified by a novel process of digital curve evolution. To compute our similarity measure, we first establish the best possible correspondence of visual parts (without explicitly computing the visual parts). Then, the similarity between corresponding parts is computed and aggregated. We applied our similarity measure to shape matching of object contours in various image databases and compared it to well-known approaches in the literature. The experimental results justify that our shape matching procedure gives an intuitive shape correspondence and is stable with respect to noise distortions.

Extraction and validation of a new set of CMS pythia8 tunes from underlying-event measurements
A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi +4 more
2020· The European Physical Journal C409doi:10.1140/epjc/s10052-019-7499-4

New sets of CMS underlying-event parameters ("tunes") are presented for the pythia8 event generator. These tunes use the NNPDF3.1 parton distribution functions (PDFs) at leading (LO), next-to-leading (NLO), or next-to-next-to-leading (NNLO) orders in perturbative quantum chromodynamics, and the strong coupling evolution at LO or NLO. Measurements of charged-particle multiplicity and transverse momentum densities at various hadron collision energies are fit simultaneously to determine the parameters of the tunes. Comparisons of the predictions of the new tunes are provided for observables sensitive to the event shapes at LEP, global underlying event, soft multiparton interactions, and double-parton scattering contributions. In addition, comparisons are made for observables measured in various specific processes, such as multijet, Drell-Yan, and top quark-antiquark pair production including jet substructure observables. The simulation of the underlying event provided by the new tunes is interfaced to a higher-order matrix-element calculation. For the first time, predictions from pythia8 obtained with tunes based on NLO or NNLO PDFs are shown to reliably describe minimum-bias and underlying-event data with a similar level of agreement to predictions from tunes using LO PDF sets.

Validation of the flexible and rigid control dimensions of dietary restraint
Joachim Westenhoefer, Albert J. Stunkard, Volker Pudel
1999· International Journal of Eating Disorders408doi:10.1002/(sici)1098-108x(199907)26:1<53::aid-eat7>3.0.co;2-n

OBJECTIVE: Two subscales for the Eating Inventory (Three-Factor Eating Questionnaire) are developed and validated: Rigid and Flexible control of eating behavior. METHOD: Study I is an analysis of questionnaire data and a 7-day food diary of 54,517 participants in a computer-assisted weight reduction program. Study II is a study of 85 subjects used to develop a final item pool. Study III is a questionnaire survey of a random sample (N = 1,838) from the West German population aged 14 years and above used to validate the developed subscales. RESULTS: Rigid control is associated with higher scores of Disinhibition, with higher body mass index (BMI), and more frequent and more severe binge eating episodes. Flexible control is associated with lower Disinhibition, lower BMI, less frequent and less severe binge eating episodes, lower self-reported energy intake, and a higher probability of successful weight reduction during the 1-year weight reduction program. DISCUSSION: Rigid and flexible control represent distinct aspects of restraint having different relations to disturbed eating patterns and successful weight control.

An overview of the problems posed by plastic products and the role of extended producer responsibility in Europe
Walter Leal Filho, Ulla A. Saari, Mariia Fedoruk, Arvo Iital +3 more
2019· Journal of Cleaner Production401doi:10.1016/j.jclepro.2018.12.256

Plastic products are easy and convenient for our everyday use, but their negative impacts on human health and the environment cannot be overlooked. The negative impacts and effects of plastic waste are now widely known and have been subject of much recent media coverage, both in Europe and on a global level. Faced with increasing amounts of plastic waste, the European Union as a whole and many European governments in particular, are currently revising the policy options available to cope with the problem. One of the tools which may be deployed with a view to reducing the pressures posed by plastic waste, is the Extended Producer Responsibility principle. It is considered to be one of the major waste management policy instruments that support the implementation of the European waste hierarchy. Its application may assist in fostering the collection and recycling of waste streams that contain plastic. This paper presents an overview of the problems posed by plastic waste, and outlines their environmental dimensions. It discusses the role of the Extended Producer Responsibility principle and provides some recommendations that may be useful in enhancing extended producer responsibility.

Climate Change and Health Preparedness in Africa: Analysing Trends in Six African Countries
Samuel Kwasi Opoku, Walter Leal Filho, Hubert Fudjumdjum, Oluwabunmi O. Adejumo
2021· International Journal of Environmental Research and Public Health370doi:10.3390/ijerph18094672

Climate change is a global problem, which affects the various geographical regions at different levels. It is also associated with a wide range of human health problems, which pose a burden to health systems, especially in regions such as Africa. Indeed, across the African continent public health systems are under severe pressure, partly due to their fragile socioeconomic conditions. This paper reports on a cross-sectional study in six African countries (Ghana, Nigeria, South Africa, Namibia, Ethiopia, and Kenya) aimed at assessing their vulnerabilities to climate change, focusing on its impacts on human health. The study evaluated the levels of information, knowledge, and perceptions of public health professionals. It also examined the health systems' preparedness to cope with these health hazards, the available resources, and those needed to build resilience to the country's vulnerable population, as perceived by health professionals. The results revealed that 63.1% of the total respondents reported that climate change had been extensively experienced in the past years, while 32% claimed that the sampled countries had experienced them to some extent. Nigerian respondents recorded the highest levels (67.7%), followed by Kenya with 66.6%. South Africa had the lowest level of impact as perceived by the respondents (50.0%) when compared with the other sampled countries. All respondents from Ghana and Namibia reported that health problems caused by climate change are common in the two countries. As perceived by the health professionals, the inadequate resources reiterate the need for infrastructural resources, medical equipment, emergency response resources, and technical support. The study's recommendations include the need to improve current policies at all levels (i.e., national, regional, and local) on climate change and public health and to strengthen health professionals' skills. Improving the basic knowledge of health institutions to better respond to a changing climate is also recommended. The study provides valuable insights which may be helpful to other nations in Sub-Saharan Africa.

How to compare regional powers: analytical concepts and research topics
Detlef Nolte
2010· Review of International Studies370doi:10.1017/s026021051000135x

Abstract Although the concept of regional power is frequently used in International Relations (IR) literature, there is no consensus regarding the defining characteristics of a regional power. The article discusses different theoretical approaches that address the topic of power hierarchies in international politics and make reference to the concept of regional power. Marking differences as well as common ground with the more traditional concept of ‘middle powers’, the article outlines an analytical concept of regional powers adequate for contemporary IR research. The analytical dimensions of the framework may be employed to differentiate regional powers from other states and to compare regional powers with regard to their power status or relative power. Furthermore, the article investigates the possible repercussions of the rise of regional powers for international politics and discusses the probable importance and functions of regional governance structures for regional powers.