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Search Results: 1 - 10 of 724 matches for " Dietmar Bruckner "
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ACTIVITY ANALYSIS WITH HIDDEN MARKOV MODEL FOR AMBIENT ASSISTED LIVING
GuoQing Yin,Dietmar Bruckner
International Journal of Electronic Commerce Studies , 2012,
Abstract: In an Ambient Assisted Living (AAL) project the activities of the user will be analyzed. The raw data is from a motion detector. Through data processing the huge amount of dynamic raw data was translated to state data. With hidden Markov model, forward algorithm to analyze these state data the daily activity model of the user was built. Thirdly by comparing the model with observed activity sequences, and finding out the similarities between them, defined the best adapt routine in the model. Furthermore an activity routine net was built and used to compare with the hidden Markov model.
Machine Perception in Automation: A Call to Arms
Dietmar Bruckner,Rosemarie Velik,Yoseba Penya
EURASIP Journal on Embedded Systems , 2011, DOI: 10.1155/2011/608423
Abstract:
Machine Perception in Automation:A Call to Arms
Bruckner Dietmar,Velik Rosemarie,Penya Yoseba
EURASIP Journal on Embedded Systems , 2011,
Abstract: Automation systems strongly depend on the amount, quality, and richness of their sensor information. For decades, scientists have investigated towards more accurate and cheaper sensors as well as new sensors for previously undetectable properties or substances. With these enhancements the problem of too complex sensor information and sensor fusion raised. This paper is intended for giving a retrospection on perception systems in automation, followed by reviewing state-of-the-art approaches for handling diverse and complex sensor information as well as highlighting future requirements for more human-like systems that have the ability of performing their actions in complex and unpredictable environments. For the latter requirement, a section introducing a number of agent architectures for embedding the sensor fusion process into a comprehensive decision-making unit is given.
Decision-Making and Georgia's Perpetual Revolution: The Case of IDP Housing
Till Bruckner
Caucasian Review of International Affairs , 2009,
Abstract: Observers tend to enthuse about Georgia’s leadership or damn it, but such black-and-white views do little to explain what is really going on in the country. Examining the government’s recent efforts to provide housing to those internally displaced by the August 2008 conflict with Russia sheds light not only on the housing program itself, but on contemporary Georgian politics in general. In particular, four traits characteristic of the ruling United National Movement’s revolutionary governance are brought into focus: informal decision-making, fluid roles, heroic action, and vanguard politics.
A Model Structure On The Category Of Small Acyclic Categories
Roman Bruckner
Mathematics , 2015,
Abstract: In this paper, we show that the Thomason model structure restricts to a Quillen equivalent cofibrantly generated model structure on the category of acyclic categories, whose generating cofibrations are the same as those generating the Thomason model structure. To understand the Thomason model structure, we need to have a closer look at the (barycentric) subdivision endofunctor on the category of simplicial sets. This functor has a well known right adjoint, called Kan's Ex functor. Taking the subdivision twice and then the fundamental category yields a left adjoint of an adjunction between the category of simplicial sets and the category of small categories, whose right adjoint is given by applying the Ex functor twice on the nerve of a category. This adjunction lifts the cofibrantly generated Quillen model structure on simplicial sets to a cofibrantly generated model structure on the category of small categories, the Thomason model structure. The generating sets are given by the image of the generating sets of the Quillen model structure on simplicial sets under the aforementioned adjunction. We furthermore show that the category of acyclic categories is proper and combinatorial with respect to said model structure. That is weak equivalences behave nicely with respect to pushouts along fibrations and cofibrations, and cofibrations satisfy certain smallness conditions which allow us to work with sets instead of proper classes.
Trust between Boundary-Spanning Agents: The Role of Relational Competencies  [PDF]
Isabella Hatak, Dietmar Roessl
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.33001
Abstract:

Against the background of principal-agent and transaction-cost theoretical considerations, this study addresses the question whether relational competencies relate to trust within cooperative relationships, taking into account also situational and personal factors. In its conclusion, the study presents an experimentally confirmed model (n = 282) that shows the strong causal relationship between relational competencies and trust allowing boundary-spanning agents to exert influence on the development and maintenance of complex cooperative relationships characterized by long-term objectives.

Lifestyles and Their Impact on Energy-Related Investment Decisions  [PDF]
Maria Gr?ger, Victoria Schmid, Thomas Bruckner
Low Carbon Economy (LCE) , 2011, DOI: 10.4236/lce.2011.22014
Abstract: This paper presents an empirical survey of energy-related investment decisions made by private households in Germany. The investment behaviour is segmented and discussed by applying the milieu approach. The decision makers are clustered in certain lifestyles, as represented by the Sinus-Milieus® from the Sinus Institute. To analyse the relationship between the lifestyles of house owners and their energy-related investment decisions, telephone interviews were conducted in order to acquire data on currently installed heating systems and preferences for future heating systems in private residential buildings. The results of the survey support the hypothesis of a link between lifestyles and the energy-related investment behaviour. Based on the observed relationship between lifestyles and decisions on energy technologies, predictions of energy trends in private residential buildings can be improved. In addition, the knowledge about specific development paths allows the utilisation of the information for information campaigns and the promotion of energy supply technologies which lead to lower CO2-emissions.
The recent decline of Montastraea annularis (complex) coral populations in western Cura?ao: a cause for concern?
Bruckner,A. W; Bruckner,R. J;
Revista de Biología Tropical , 2006,
Abstract: shallow leeward reefs off the western end of cura?ao are dominated by extensive populations of m. annularis (complex). these species are larger in size (mean= 66 cm diameter) than all other species, with few small colonies (<30 cm) and notable absence of recruits. in 1998, colonies of m. annularis (complex) accounted for more then 45% of all species >10 cm observed within transects, and most exhibited low levels of partial mortality (mean= 22.5%). these species were less abundant (38% of all colonies) in 2005. partial mortality among live colonies of m. annularis and m. faveolata increased by 85% (mean = 42% partial mortality) and numerous dead colonies of m. faveolata and m. annularis were observed; m. franksi colonies were generally in excellent condition (14% partial tissue mortality). a high prevalence of coral diseases (3-30%) was documented among m. annularis and m. faveolata, while all other species were less frequently affected. yellow band disease (ybd) emerged shortly after the 1995 bleaching event, and rapidly spread throughout all depths, with the highest prevalence between 1997-1999. ybd caused slow rates of mortality (=1 cm/month), but multiple focal lesions appeared on individual colonies, and these progressively radiated outward as they killed the colonies. by 2005, 44% of the tagged corals were dead; the remainder exhibited active ybd infections (21%) or were in remission (31.6%) but were missing on average >90% of their tissue. although the incidence of ybd has declined since 2000, white plague (wp) prevalence was unusually high (4-12%) in 2001 and 2005, with affected colonies exhibiting recent mortality of up to 70%. dead montastraea spp. surfaces are being colonized by other corals, including poritids, agaricids, and other faviids, while recruits of m. annularis (complex) are absent. if diseases and other biotic stressors persist on these reefs, m. annularis and m. faveolata populations may undergo a decline similar to that observed in the 1980s
The recent decline of Montastraea annularis (complex) coral populations in western Cura ao: a cause for concern?
A. W Bruckner,R. J Bruckner
Revista de Biología Tropical , 2006,
Abstract: Shallow leeward reefs off the western end of Cura ao are dominated by extensive populations of M. annularis (complex). These species are larger in size (mean= 66 cm diameter) than all other species, with few small colonies (<30 cm) and notable absence of recruits. In 1998, colonies of M. annularis (complex) accounted for more then 45% of all species >10 cm observed within transects, and most exhibited low levels of partial mortality (mean= 22.5%). These species were less abundant (38% of all colonies) in 2005. Partial mortality among live colonies of M. annularis and M. faveolata increased by 85% (mean = 42% partial mortality) and numerous dead colonies of M. faveolata and M. annularis were observed; M. franksi colonies were generally in excellent condition (14% partial tissue mortality). A high prevalence of coral diseases (3-30%) was documented among M. annularis and M. faveolata, while all other species were less frequently affected. Yellow band disease (YBD) emerged shortly after the 1995 bleaching event, and rapidly spread throughout all depths, with the highest prevalence between 1997-1999. YBD caused slow rates of mortality (=1 cm/month), but multiple focal lesions appeared on individual colonies, and these progressively radiated outward as they killed the colonies. By 2005, 44% of the tagged corals were dead; the remainder exhibited active YBD infections (21%) or were in remission (31.6%) but were missing on average >90% of their tissue. Although the incidence of YBD has declined since 2000, white plague (WP) prevalence was unusually high (4-12%) in 2001 and 2005, with affected colonies exhibiting recent mortality of up to 70%. Dead Montastraea spp. surfaces are being colonized by other corals, including poritids, agaricids, and other faviids, while recruits of M. annularis (complex) are absent. If diseases and other biotic stressors persist on these reefs, M. annularis and M. faveolata populations may undergo a decline similar to that observed in the 1980s among Caribbean acroporids. Rev. Biol. Trop. 54 (Suppl. 3): 45- 58. Epub 2007 Jan. 15. Los arrecifes someros a sotavento del oeste de Cura ao están dominados por extensas poblaciones de Montastraea annularis (complejo). Estas especies son mayores en tama o (promedio= 66 cm de diámetro) que las otras especies, con algunas colonias peque as (<30 cm) y una notable ausencia de reclutas. En 1998, las colonias de Montastraea annularis (complejo), representaban más del 45% de todas las especies de >10 cm observadas en transectos y la mayoría exhibió bajos niveles de mortalidad parcial (prom= 22.5%).
Combined Ang-2 and VEGF Targeting Therapies in Renal Cell Carcinoma  [PDF]
Nikolett Molnar, Dietmar W. Siemann
Journal of Cancer Therapy (JCT) , 2013, DOI: 10.4236/jct.2013.49A2001
Abstract:

Angiogenesis, the growth of new vessels from pre-existing ones, is an important feature of tumor growth that has been exploited as a therapeutic target in oncology. Given its key role in facilitating blood vessel sprouting, VEGF has been a major focus of anti-angiogenic strategies, but the observation of resistance in some clinical trials utilizing such agents has led to a search for new or complementary targets in angiogenesis process. The Angiopoietin/Tie2 pathway and in particular the Angiopoietin-2 (Ang-2) ligand which is critically involved in the destabilization of normal vasculature, has been identified as one such target. The current study investigated the potential benefits of combining an Ang-2 targeted therapy with small molecule VEGF targeted agents (Sunitinib, Cediranib) in a human renal cell carcinoma model. The results showed that while both Ang-2 and VEGF interference on their own impaired tumor growth and new blood vessel formation, the combination of agents that targeted both pathways resulted in significantly superior anti-tumor and anti-angiogenic effects.

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