156 research outputs found
The death of drawing : architecture in the age of simulation /
No full text"The Death of Drawing explains how the shift from drawing by to hand to using building information models (BIM) is happening and the effect of this on how architects think and work. Author David Scheer helps you recognize that architectural drawings exist to represent construction and architectural simulations (BIM) exist to anticipate building performance. The values implicit in drawing - patience, care, attention to detail, knowledge of composition, appreciation of well-made things - which architects used to gain through years of drawing practice, don't apply to simulation, so Scheer discusses how losing this vital learning tool might affect your work and and the field of architecture. He also explains that simulation requires you to cast building information in the form of data, which means less of a distinction between designers and constructors, and, based on this, how your interactions with and relevance to clients and collaborators might impact your practice. Finally he reflects on this moment of profound transformation, to remember what drawing has meant to architecture so that you can anticipate what may follow"--Includes bibliographical references (pages 229-234) and index."The Death of Drawing explains how the shift from drawing by to hand to using building information models (BIM) is happening and the effect of this on how architects think and work. Author David Scheer helps you recognize that architectural drawings exist to represent construction and architectural simulations (BIM) exist to anticipate building performance. The values implicit in drawing - patience, care, attention to detail, knowledge of composition, appreciation of well-made things - which architects used to gain through years of drawing practice, don't apply to simulation, so Scheer discusses how losing this vital learning tool might affect your work and and the field of architecture. He also explains that simulation requires you to cast building information in the form of data, which means less of a distinction between designers and constructors, and, based on this, how your interactions with and relevance to clients and collaborators might impact your practice. Finally he reflects on this moment of profound transformation, to remember what drawing has meant to architecture so that you can anticipate what may follow"--Simulation and Representation -- Drawing and Architecture -- Building Information Modeling -- Performativity and Design -- Information Flow and Collaboration -- Computational Design -- Simulation and Design Thinking -- Architectures of Simulation
Helden am Himmel – Helden im Himmel. Sphärenwechsel zu den Sternen im griechischen Mythos.
No full textThe Catasterisms of Pseudo-Eratosthenes and the Astronomia, written by an author named Hyginus are the most important extant sources concerning ancient Greek star-myths. Analysing these texts this paper discusses questions about the reasons and circumstances that lead mythical heroes and heroines to changing the earthly sphere for the heavens in Greek myth. Which conse-quences did these changes inflict on the protagonists concerned? What did it mean to be put among the stars? The texts allowed their audience a wide range of possibilities “to think with”, including divine compassion, gratitude and eternal memory of great deeds as well as presenting warning examples for man-kind on earth. Since when these examples were told, is difficult to assess. The case of the Arkadian heroine Callisto shows how strata of mythical subjects (mythische Stoffe) changed over the centuries. The Homeric Odysseus was told of the ‘Bear’ as an important heavenly constellation, but it seems that it took some centuries before the heroine Callisto reached the sky and this bear finally got a personal name. Authors like Pseudo-Eratosthenes and Hyginus do not express the belief that such a changing of spheres included a happy afterlife or immortal feasting in the presence of the Olympic gods. Nevertheless their read-ers were at liberty to hope for it
(No) Access to the Standard under Art. 102 TFEU
No full textThe paper addresses the question of accessibility of de jure standards considering a contractual FRAND obligation based on the FRAND commitment, as well as Art. 102 TFEU. It shows that the contractual entitlement to FRAND licensing negotiations is required for the standardisation process to be in compliance with Art. 101 TFEU. Still, the contractual FRAND obligation may vanish in consequence of an SEP transfer. Art. 102 TFEU cannot compensate for that loss because its applicability depends on the existence of a dominant position. Although lock-in effects are to be considered within the market definition, which can widen the provision’s scope of applicability in SEP-related cases, the prohibition of an abuse of dominant position is not capable to ensure effective access to the standard sufficiently. The proof of a dominant position may require detailed market analysis, which is not in accordance with the requirement of effective access. On the one hand, implementers who are already locked into a standard are exposed to the risk of patent holdup. On the other hand, implementers who have not yet decided to implement the standard may hesitate to do so in order not to risk patent holdup. This impairs fast and widespread dissemination of standards
Continuation of chronic antiplatelet therapy is not associated with increased need for transfusions: a cohort study in critically ill septic patients
No full textFuchs C, Scheer CS, Wauschkuhn S, et al. Continuation of chronic antiplatelet therapy is not associated with increased need for transfusions: a cohort study in critically ill septic patients. BMC Anesthesiology . 2024;24(1): 146.BACKGROUND: The decision to maintain or halt antiplatelet medication in septic patients admitted to intensive care units presents a clinical dilemma. This is due to the necessity to balance the benefits of preventing thromboembolic incidents and leveraging anti-inflammatory properties against the increased risk of bleeding.; METHODS: This study involves a secondary analysis of data from a prospective cohort study focusing on patients diagnosed with severe sepsis or septic shock. We evaluated the outcomes of 203 patients, examining mortality rates and the requirement for transfusion. The cohort was divided into two groups: those whose antiplatelet therapy was sustained (n=114) and those in whom it was discontinued (n=89). To account for potential biases such as indication for antiplatelet therapy, propensity score matching was employed.; RESULTS: Therapy continuation did not significantly alter transfusion requirements (discontinued vs. continued in matched samples: red blood cell concentrates 51.7% vs. 68.3%, p=0.09; platelet concentrates 21.7% vs. 18.3%, p=0.82; fresh frozen plasma concentrates 38.3% vs. 33.3%, p=0.7). 90-day survival was higher within the continued group (30.0% vs. 70.0%; p0.05).; CONCLUSIONS: The findings suggest that continuing antiplatelet therapy in septic patients admitted to intensive care units could be associated with a significant survival benefit without substantially increasing the need for transfusion. These results highlight the importance of a nuanced approach to managing antiplatelet medication in the context of severe sepsis and septic shock. © 2024. The Author(s)
Review of \u3ci\u3eGovernor Lady: The Life and Times of Nellie Tayloe Ross\u3c/i\u3e By Teva J. Scheer
No full textNellie Tayloe Ross, governor of Wyoming from January 5, 1925-January 3, 1927, was sworn into office fifteen days before Miriam Ferguson in Texas, a precedence that earned the former a lasting legacy as the nation\u27s first woman governor. The novelty of her status and her elegant charm won Ross the attention of her contemporaries. A series of autobiographical essays titled Governor Lady, published in 1927 by Good Housekeeping, fed the interests of an admiring public. A more recent tribute is Teva Scheer\u27s Governor Lady: The Life of Times of Nellie Tayloe Ross. How should history evaluate the nation\u27s first woman governor? asks the author. For despite Ross\u27s later accomplishments as an organizer for the national Democratic Party and director of the U.S. Mint, it is as Wyoming\u27s governor that she is most remembered. Scheer\u27s evaluation, reflecting extensive research, is an affirmative one that recognizes Ross\u27s historical significance and argues her continuing importance.
Even as Ross extolled the virtues of hearth and home, after her husband\u27s death in 1924 she would seldom devote her own energies there. Ross\u27s story involves copious context, ranging from late nineteenth-century farming conditions to early twentieth-century monetary policy, from the nuances of Wyoming state politics through the years to postsuffrage feminism. Ross is described as a kindergarten teacher in Omaha and wife in Cheyenne, as gubernatorial candidate in the West and Chautauqua speaker in the East, as a political outsider among former suffragists and a Washington, D.C., insider during a succession of administrations. Explaining these shifts involves introducing a swelling cast of characters and conditions as much as portraying the woman herself.
Scheer describes Ross as the Missouri-born child of former slave owners, accounting for her Southern manners and perhaps some racist comments revealed in Ross\u27s later correspondence. She connects Ross with the typical middle-class American woman of her era, in contrast to her college-educated contemporaries who also distinguished themselves as female firsts in the public sector
Proton-Electron Hyperfine Coupling Constants of the Chlorophyll a Cation Radical by ENDOR Spectroscopy
No full textIn this paper we describe the assignment of the major coupling constants in monomer chlorophyll a cation free radical
by ENDOR spectroscopy. To facilitate chemical manipulation methylpyrochlorophyllide a has been used as a stand-in,
and a suite of six selectively deuterated derivatives have been subjected to ENDOR investigation. Details of the synthesis of
these compounds are described. To study the effect of structural features on the spin distribution in the free radicals, six additional
chlorophyll derivatives have been studied. Five coupling constants have been assigned, which account for about 80% of
the observed electron spin resonance line width in the chlorophyll a monomer cation radical. The spin distribution appears to
be highly asymmetric
Determining groundwater velocity with DTS at the Máximakanaal and in the Horstermeerpolder
No full textA suggested approach for determining groundwater flow in unconsolidated aquifers is tested. Performing a heat pulse response test by using a heat- and fibre-optic cable should result in a vertical profile of groundwater velocities. These cables are installed by using direct push ensuring the direct contact between cable and aquifer. The suggested approach is tested with two case studies. The first case study near the Máximakanaal was meant to determine if the canal is leaking. This experiment failed during the installation which was discovered after analyzing the results. The mistakes that were made during this case study have been analyzed and are discussed. The second case study was not performed by the author of this thesis. Nonetheless, the measurements of this case study enabled the completion of retrieving groundwater velocities from distributed temperature sensing and reviewing the approach
An Approach for Data Extraction, Validation and Correction Using Geometrical Algorithms and Model View Definitions on Building Models
No full textThe Industry Foundation Classes (IFC) cover a wide variety of subdomains in the construction industry. Model View Definitions (MVD) enable to specify a subset of the IFC schema to assess the content of a model for specific use cases and information exchanges. However, IFC and MVD paradoxically complexify the workflow since it requires a deep understanding of the schema combined with construction knowledge to carry out simple use cases such as quantity checking or data export. This gap between domain specific queries and their expression in a computer-readable language weakens the opportunities provided to the building industry by Building Information Modeling. Our research consists in the implementation of MVDs in a high-level programming language to extract data from building models, an assessment of the extraction results and geometrical processing algorithms to correct the explicit quantities and properties that are supplied as metadata alongside the elements in IFC building models. Geometrical processing can be used to reduce and eventually correct errors on property values. We use a generic geometrical representation of IFC entity instances and apply geometrical transformations on those to obtain geometrical shapes. Boolean operations are used to identify relationships between elements. Eventually, incorrect data values are corrected directly in the IFC models accordingly to the IFC schema. For instance, we authored an MVD to extract data pertaining to external walls from different IFC models and corrected the value of the IsExternal property of the models’ IfcWall entities. This use case is of great importance for the cost estimation of a thermal renovation on a building as it gives a good estimate of the outer surface area of the building envelope.Urban Data Scienc
A Maghreb-Iberian Green Hydrogen System: Network Simplex Method to compare design scenarios
No full textThe Green Deal (Fetting, 2020), initiated by the European Commission, aims to reduce greenhouse gas emissions within the EU to limit global warming to 1.5 degrees Celsius compared to pre-industrial levels (International Panel of Climate Change, 2022). The EU focuses on energy that is acceptable, applicable, available, and affordable – referring to sustainability, technological readiness, energy security, and cost-effectiveness. Energy security involves meeting energy needs using domestic sources to avoid reliance on imported energy, which could pose threats to energy security due to the political power of supplying countries (Asia Pacific Energy Research Centre, 2007). A potential proposed by researchers is the Desertec project (Van Wijk & Wouters, 2021).In this idea the strong solar radiation in African countries is used to supply Europe with hydrogen The Desertec project, despite its promising potential, never materialized. Studies examining the reasons for its non-realization concur that the primary hindrance was not technological limitations but rather the complexities arising from multi-country politics (Schmitt, 2018; Scheer, 2012; Lilliestam & Ellenbeck, 2011). Scheer (2012) aptly described the plan as "practically impossible for obvious political, economic, and sociological reasons" (Schmitt, 2018). He emphasized that coordinating an energy system involving over forty different goverments, each with their own energy grids and territories for power transmission, inevitably led to unrealistic expectations.In response, this research presents a system that addresses key barriers that impeded the Desertec project's success. By focusing on a specific geographical area with fewer national governments involved, integrated energy grids, and no energy transport crossing other countries' territories, the research proposes a solution to the challenges identified by Scheer (2012) and Schmitt (2018). Portugal and Spain, with an integrated energy grid and limited European energy grid connection, are considered, while Spain's existing natural gas pipelines to Algeria offer a paved path for hydrogen transport. With this more manageable consortium of four national governments and fewer complexities, the research seeks to evaluate various technological design options using a cost model to test their feasibility and impact on energy security. The aim of this research is to provide an answer to: How does a technologically feasible Maghreb-Iberian green hydrogen system (MIGHS) impact the Iberian energy cost and energy security?Complex Systems Engineering and Management (CoSEM
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