Academic literature on the topic 'Probe Gap Model'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Probe Gap Model.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Probe Gap Model"
1
Lao, Li, Constantine Dovrolis, and M. Y. Sanadidi. "The probe gap model can underestimate the available bandwidth of multihop paths." ACM SIGCOMM Computer Communication Review 36, no. 5 (October 10, 2006): 29–34. http://dx.doi.org/10.1145/1163593.1163599.
Full text
2
Li, J., D. W. Smith, and S. G. Fityus. "The effect of a gap between the access tube and the soil during neutron probe measurements." Soil Research 41, no. 1 (2003): 151. http://dx.doi.org/10.1071/sr02054.
Full textAbstract:
The neutron probe is a tool employed for the measurement of water content in a soil mass. The presence of a gap between the soil and the neutron probe access tube, filled with either air or water, inevitably introduces a systematic error in neutron probe readings. In this study, experimental investigations and numerical analyses were carried out to evaluate the effects of this gap on neutron probe calibration. The numerical model was developed based on the multigroup neutron diffusion equations and the finite element method. The experiments were conducted in a heavy clay soil. The results show that an air gap of 2.5–30 mm between the soil and a 50-mm-diameter aluminium tube could lead to an underestimation of soil water content by 5–45%, but significant underestimation was apparent for air gaps <10 mm. It is also found that the neutron count is significantly overestimated if the gap around the access tube is filled with water rather than air, but this effect is most significant for larger gaps. The results of this research clearly indicate that a gap between the neutron probe access tube and the soil profile should be avoided during field installation, and that if a gap between the access tube and soil develops during service, a systematic error will be introduced into measurements.
3
Hyun, S. Y., S. Y. Kim, and Y. S. Kim. "Finite-difference time-domain model for the feeding gap of coaxial probe driven antennas." IET Microwaves, Antennas & Propagation 3, no. 3 (2009): 501. http://dx.doi.org/10.1049/iet-map.2008.0082.
Full text
4
Chima, R. V. "Calculation of Tip Clearance Effects in a Transonic Compressor Rotor." Journal of Turbomachinery 120, no. 1 (January 1, 1998): 131–40. http://dx.doi.org/10.1115/1.2841374.
Full textAbstract:
The flow through the tip clearance region of a transonic compressor rotor (NASA rotor 37) was computed and compared to aerodynamic probe and laser anemometer data. Tip clearance effects were modeled both by gridding the clearance gap and by using a simple periodicity model across the ungridded gap. The simple model was run with both the full gap height, and with half the gap height to simulate a vena-contracta effect. Comparisons between computed and measured performance maps and downstream profiles were used to validate the models and to assess the effects of gap height on the simple clearance model. Recommendations were made concerning the use of the simple clearance model. Detailed comparisons were made between the gridded clearance gap solution and the laser anemometer data near the tip at two operating points. The computed results agreed fairly well with the data but overpredicted the extent of the casing separation and underpredicted the wake decay rate. The computations were then used to describe the interaction of the tip vortex, the passage shock, and the casing boundary layer.
5
Beyer, E. C., D. L. Paul, and D. A. Goodenough. "Connexin43: a protein from rat heart homologous to a gap junction protein from liver." Journal of Cell Biology 105, no. 6 (December 1, 1987): 2621–29. http://dx.doi.org/10.1083/jcb.105.6.2621.
Full textAbstract:
Northern blot analysis of rat heart mRNA probed with a cDNA coding for the principal polypeptide of rat liver gap junctions demonstrated a 3.0-kb band. This band was observed only after hybridization and washing using low stringency conditions; high stringency conditions abolished the hybridization. A rat heart cDNA library was screened with the same cDNA probe under the permissive hybridization conditions, and a single positive clone identified and purified. The clone contained a 220-bp insert, which showed 55% homology to the original cDNA probe near the 5' end. The 220-bp cDNA was used to rescreen a heart cDNA library under high stringency conditions, and three additional cDNAs that together spanned 2,768 bp were isolated. This composite cDNA contained a single 1,146-bp open reading frame coding for a predicted polypeptide of 382 amino acids with a molecular mass of 43,036 D. Northern analysis of various rat tissues using this heart cDNA as probe showed hybridization to 3.0-kb bands in RNA isolated from heart, ovary, uterus, kidney, and lens epithelium. Comparisons of the predicted amino acid sequences for the two gap junction proteins isolated from heart and liver showed two regions of high homology (58 and 42%), and other regions of little or no homology. A model is presented which indicates that the conserved sequences correspond to transmembrane and extracellular regions of the junctional molecules, while the nonconserved sequences correspond to cytoplasmic regions. Since it has been shown previously that the original cDNA isolated from liver recognizes mRNAs in stomach, kidney, and brain, and it is shown here that the cDNA isolated from heart recognizes mRNAs in ovary, uterus, lens epithelium, and kidney, a nomenclature is proposed which avoids categorization by organ of origin. In this nomenclature, the homologous proteins in gap junctions would be called connexins, each distinguished by its predicted molecular mass in kilodaltons. The gap junction protein isolated from liver would then be called connexin32; from heart, connexin43.
6
Salehin, Khondaker M., and Roberto Rojas-Cessa. "Scheme for Measuring Queueing Delay of a Router Using Probe-Gap Model: The Single-Hop Case." IEEE Communications Letters 18, no. 4 (April 2014): 696–99. http://dx.doi.org/10.1109/lcomm.2014.030114.132775.
Full text
7
Li, Bo, Yanquan Geng, and Yongda Yan. "Nano/Microscale Thermal Field Distribution: Conducting Thermal Decomposition of Pyrolytic-Type Polymer by Heated AFM Probes." Nanomaterials 10, no. 3 (March 7, 2020): 483. http://dx.doi.org/10.3390/nano10030483.
Full textAbstract:
In relevant investigations and applications of the heated atomic force microscope (AFM) probes, the determination of the actual thermal distribution between the probe and the materials under processing or testing is a core issue. Herein, the polyphthalaldehyde (PPA) film material and AFM imaging of the decomposition structures (pyrolytic region of PPA) were utilized to study the temperature distribution in the nano/microscale air gap between heated tips and materials. Different sizes of pyramid decomposition structures were formed on the surface of PPA film by the heated tip, which was hovering at the initial tip–sample contact with the preset temperature from 190 to 220 °C for a heating duration ranging from 0.3 to 120 s. According to the positions of the 188 °C isothermal surface in the steady-state probe temperature fields, precise 3D boundary conditions were obtained. We also established a simplified calculation model of the 3D steady-state thermal field based on the experimental results, and calculated the temperature distribution of the air gap under any preset tip temperature, which revealed the principle of horizontal (<700 nm) and vertical (<250 nm) heat transport. Based on our calculation, we fabricated the programmable nano-microscale pyramid structures on the PPA film, which may be a potential application in scanning thermal microscopy.
8
Ghosh, Sudip Kumar, Subhradeep Chakraborty, L. Lolit Kumar Singh, and Sudipta Chattopadhyay. "Modal analysis of probe-fed circular sector microstrip antenna with and without variable air gap: Investigation with modified cavity model." International Journal of RF and Microwave Computer-Aided Engineering 28, no. 1 (September 7, 2017): e21172. http://dx.doi.org/10.1002/mmce.21172.
Full text
9
Fazli, Norodin, Ali Koochi, Asieh Sadat Kazemi, and Mohamadreza Abadyan. "Influence of electrostatic force and the van der Waals attraction on the pull-in instability of the CNT-based probe–actuator." Canadian Journal of Physics 92, no. 9 (September 2014): 1047–57. http://dx.doi.org/10.1139/cjp-2013-0202.
Full textAbstract:
In recent years, carbon nanotubes (CNTs) have attracted great attention in the fabrication of probe tips and actuators for scanning microscopes. Herein, the pull-in instability of CNT-based probe is investigated using a nanoscale continuum model. The Euler–Bernoulli beam theory is applied to model the elastic response of the CNT. The van der Waals attraction is computed from the simplified Lennard-Jones potential. Two analytical methods (i.e., Homotopy perturbation method and Adomian decomposition method) are applied to solve the nonlinear governing equation of the system. Furthermore, the obtained results are validated by comparing with experimental results in the literature as well as numerical solutions of the finite difference method. The pull-in parameters are determined and effect of van der Waals force and a geometrical parameter effect on the instability behavior of the CNT is discussed. Moreover, the detachment length and minimum initial gap of the freestanding CNT probe are determined.
10
Rettig, L., J. H. Chu, I. R. Fisher, U. Bovensiepen, and M. Wolf. "Coherent dynamics of the charge density wave gap in tritellurides." Faraday Discuss. 171 (2014): 299–310. http://dx.doi.org/10.1039/c4fd00045e.
Full textAbstract:
The dynamics of the transient electronic structure in the charge density wave (CDW) system RTe3 (R = rare-earth element) is studied using time- and angle-resolved photoemission spectroscopy (trARPES). Employing a three-pulse pump–probe scheme we investigate the effect of the amplitude mode oscillations on the electronic band structure and, in particular, on the CDW energy gap. We observe coherent oscillations in both lower and upper CDW band with opposite phases, whereby two dominating frequencies are modulating the CDW order parameter. This demonstrates the existence of more than one collective amplitude mode, in contrast to a simple Peierls model. Coherent control experiments of the two amplitude modes, which are strongly coupled in equilibrium, demonstrate independent control of the modes suggesting a decoupling of both modes in the transient photoexcited state.
Dissertations / Theses on the topic "Probe Gap Model"
1
AZEVEDO, Diego Cananéa Nóbrega de. "Estimação de banda disponível em redes sem fio padrão IEEE 802.11N: uma análise experimental sobre os efeitos de seus novos mecanismos em técnicas ativas." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/21043.
Full textAbstract:
Submitted by Rafael Santana (rafael.silvasantana@ufpe.br) on 2017-08-30T18:33:02Z
No. of bitstreams: 2
license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5)
Diego_Cananea_Dissertacao_Mestrado_CIn_UFPE.pdf: 981557 bytes, checksum: ea7555320bfcb0316c7f0fa816288cef (MD5)Made available in DSpace on 2017-08-30T18:33:02Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Diego_Cananea_Dissertacao_Mestrado_CIn_UFPE.pdf: 981557 bytes, checksum: ea7555320bfcb0316c7f0fa816288cef (MD5) Previous issue date: 2016-09-08
A estimação da capacidade e da banda disponível em redes têm sido objeto de diversas pesquisas nos últimos anos, principalmente por causa da evolução das tecnologias e crescimento do uso da Internet. Tais técnicas são de grande importância para que seja possível fazer um melhor aproveitamento da transmissão dos dados, evitando tanto a subutilização quanto o esgotamento de recursos. Existem inúmeros usos para as técnicas de estimação de banda, dentre as quais podemos citar streaming multimídia, aplicações peer-to-peer, protocolos de roteamento baseados na banda disponível, qualidade de serviço, protocolos de transporte fim a fim, entre outros. Com o interesse cada vez maior nestes tipos de aplicações, principalmente na transmissão de vídeo e áudio, a estimação de banda tem sido de bastante interesse para pesquisadores. A estimação de banda disponível em redes sem fio por si só já é um desafio para os pesquisadores e o novo padrão IEEE 802.11n trouxe novos mecanismos para otimizar a transmissão dos dados, alcançando assim maiores taxas. Porém, tais fatores contribuem para que as técnicas hoje existentes encontrem problemas ao tentarem estimar a banda disponível, causando assim resultados que deixam a desejar. Esta pesquisa demonstra experimentalmente a influência dos novos fatores adicionados pelo novo padrão, como a agregação de quadros e de canais, em técnicas ativas de estimação de banda disponível. É possível verificar, então, que todas tem sua acurácia diminuída, causando erros de estimações. Verificamos que mesmo no cenário mais simples, onde os novos fatores são desativados, boa parte dos métodos analisados obtiveram uma performance aquém do esperado, corroborando com a afirmação de que o ambiente de redes sem fio é um grande desafio para o desenvolvimento deste tipo de técnica. A técnica de estimação YAZ se mostrou mais robusta que as demais, aproximando-se dos valores de referência em quase todos os cenários propostos, com exceção para a agregação de quadros. Em uma análise mais específica de seu algoritmo, podemos demonstrar o porquê do erro no resultado da estimação de banda disponível neste contexto.
The estimation of capacity and available bandwidth in computer networks have been the subject of several studies in recent years, mainly because of changing technologies and increasing use of the Internet. Such techniques are of great importance to be able to make better use of data transmission, avoiding both underuse as resource depletion. There are numerous uses for bandwidth estimation techniques, among which we can mention textit stream multimedia applications textit peer-to-peer, routing protocols based on available bandwidth, quality of service, end to end transport protocols, among others. With the growing interest in these types of applications, especially in video and audio transmission, bandwidth estimation has been of great interest to researchers. The estimation of available bandwidth in wireless networks is itself a challenge for researchers and the new IEEE 802.11n standard has brought new mechanisms to optimize the transmission of data, thus achieving higher rates. However, these factors contribute to that existing techniques encounter problems when trying to estimate the available bandwidth, thus causing results that fall short. This research experimentally demonstrates the influence of new factors added by the new standard, such as frame aggregation and channels in active techniques for available bandwidth estimation. It’s possible see, then, that all has its diminished accuracy, causing estimation errors. We found that even in the simplest scenario, where new factors are disabled, most of the methods discussed perform so below expectations, supporting the claim that the wireless network environment is a major challenge for the development of this type of technique . The YAZ estimation technique was more robust than the others, approaching the reference values in almost all proposed scenarios, except for the frame aggregation. In a more specific analysis of their algorithm, we can demonstrate why the error in the result of the available bandwidth estimation occurs in this context.
2
Phumisithikul, Karen L. "Surface photovoltage transients for p-type AlGaN." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3787.
Full textAbstract:
There is an understanding of surface photovoltage (SPV) behavior for GaN, yet little is known about the SPV behavior for AlGaN. In this work, a Kelvin probe was used to measure the SPV for p-type AlGaN. Very slow SPV transients were found in AlGaN, which could not be explained with a simple thermionic model. A possible explanation of this behavior is the segregation of impurities to the surface, which causes significant reduction of the depletion region width (down to 2 nm), with carrier tunneling and hopping becoming the dominant mechanisms responsible for the SPV transients. To verify this assumption, the near-surface defective region (about 40 nm) has been removed through the ICP-RIE process. After the etching, the SPV transients became fast and increased in magnitude by about 0.6 eV. By using the thermionic model, band bending was estimated to be -1 eV.
3
Taquet, Noémie. "Monitoring géochimique de la géosphère et l'atmosphère : application au stockage géologique du CO2." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0252/document.
Full textAbstract:
Cette thèse touche à la problématique des échanges de gaz aux interfaces entre la géosphère, la biosphère, l'hydrosphère et l'atmosphère par l'intermédiaire du monitoring géochimique des gaz appliqué aux sites de stockage géologiques du CO2. Au niveau de l'axe « Métrologie », nous avons développé une plate-forme de monitoring géochimique continu, in situ et déportée par spectrométrie FTIR/Raman pour la mesure des gaz du sol (CO2, CH4, N2, O2, H2O). Des protocoles de quantification ont été développés pour la mesure par télédétection infrarouge terrestre en mode passif du CO2, CH4, SO2, H2S dans l'atmosphère. Au niveau des axes « Monitoring » et « Modélisation », les mesures de gaz du sol à proximité du puits d'injection de Rousse (Pilote CO2 Total, Lacq/Rousse, France) sur plus de sept cycles saisonniers ont montré une anti-corrélation entre la teneur en CO2 et les variations du niveau piézométrique de la nappe. Cette relation a permis de modéliser l'enveloppe de variabilité « naturelle » de la teneur en CO2 dans le sol, qui constitue un élément clé pour la surveillance des sites de stockage. Les variations majeures de teneur en CO2 sont attribuées à des processus de dissolution/libération de CO2 par la nappe, jouant un rôle de pompe à CO2. La concentration en CO2 en surface (+1m) serait gouvernée par les variations de teneur en CO2 du sol. Les mesures par télédétection FTIR des gaz dans l'atmosphère ont permis d'établir pour la première fois une simulation expérimentale 3D des enveloppes de CO2 à l'aplomb du site d'injection. Ces résultats constituent un premier pas vers la mise en place d'un outil de surveillance des panaches gazeux dans l'atmosphèreThis study is based on the problematic of gas exchanges at the interface between the geosphere, biosphere, hydrosphere and atmosphere through the geochemical monitoring of gas applied to CO2 geological storage sites. Concerning the "Metrological" aspect, we developed and implemented an in situ continuous geochemical monitoring station, based on coupling FTIR/ Raman spectrometry for measuring soil gas (O2, N2, CO2, CH4 and H2O) close to the injection wells of Rousse 1 (CCS Total pilot, Lacq-Rousse, France). We also developed protocols to identify and quantify CO2, CH4, SO2, H2S in the atmosphere (plume) by passive remote sensing FTIR. On the "Monitoring" and "Modelling" aspects, the continuous recording of soil CO2 concentration during more than 7 seasonal cycles indicate that CO2 concentration in the soil was anti-correlated with changes in piezometric level of the groundwater. This correlation was used to model the limits of natural variability of CO2 content in the soil, which is a key to CCS sites monitoring. The main fluctuations in soil CO2 content was assigned to a dissolution/release process of CO2 by the perched water table, acting as a CO2 pump. The CO2 concentration at the near surface (+ 1 m) would be governed by changes of the soil CO2 content. FITR remote sensing measurement of atmospheric gases allowed for the first time to perform an experimental 3D simulation of CO2 layers on the injection site. This type of experimental simulation is a first step for the monitoring of gases in the atmosphere
Books on the topic "Probe Gap Model"
1
Chalabi, Azadeh. A Networked Model of Global Governance for Implementing Human Rights. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198822844.003.0007.
Full textAbstract:
Chapter 6 examines global human rights governance architecture as it currently stands putting forward a networked model of global human rights governance as an alternative. The first section of this chapter examines the ‘five-gap problem’ in the UN human rights system which can have serious practical implications at the local, national, regional, and international levels. The second section explores a networked model of governance as a practical response strategy to narrow the gaps while enhancing the integration of the international human rights ‘system’. This chapter also probes the practical benefits of adopting an ‘International Human Rights Action Plan’ (IHRAP) as a basic requisite for integrated and effective co-operation and co-ordination among various human rights related actors in a global-wide network.
2
Kahn, Andrew, Mark Lipovetsky, Irina Reyfman, and Stephanie Sandler. Prose Fiction. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199663941.003.0019.
Full textAbstract:
This chapter considers the prose genres that developed in the period and their relative artistic success and limitations, recognizing that poetry had been much more open to innovation than prose. Forms such as the memoir (fictional as well as real), autobiography, letter writing, the allegorical novel, and the short story conform to the general pattern of literary norms adapted from European models. The chapter explains that a gap opened between literary fiction in translation and novels written in Russia, arguing that Russian writers chose not to emulate the contemporary European novel, revising instead picaresque and quixotic fictions associated with the seventeenth century and the romance tradition.
3
Lee, Jan Hau, and Ira M. Cheifetz. Respiratory Failure and Mechanical Ventilation. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199918027.003.0006.
Full textAbstract:
This chapter on respiratory failure and mechanical ventilation provides essential information about how to support children with severe respiratory disorders. The authors discuss multiple modes of respiratory support, including high-flow nasal cannula oxygen, noninvasive ventilation with continuous positive airway pressure and bilevel positive airway pressure, as well as conventional, high-frequency, and alternative modes of invasive ventilation. The section on invasive mechanical ventilation includes key information regarding gas exchange goals, modes of ventilation, patient–ventilator interactions, ventilator parameters (including tidal volume, end-expiratory pressure, and peak plateau pressure), extubation readiness testing, and troubleshooting. The authors also provide the new consensus definition of pediatric acute respiratory distress syndrome. Also included are multiple figures and indispensable information on adjunctive therapies (inhaled nitric oxide, surfactant, prone positioning, and corticosteroids) and respiratory monitoring (including capnography and airway graphics analysis).
4
Tewinkel, Christiane. “Everybody in the Concert Hall should be Devoted Entirely to the Music”. Edited by Christian Thorau and Hansjakob Ziemer. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780190466961.013.7.
Full textAbstract:
This chapter discusses the extent to which representations of “improper” listening are found in popular and academic literature of German and U.S. origin, for the process of reception is highly susceptible to error and interference. Indeed, despite near-ideal conditions, concert-goers are as prone to molding their experience according to subjective predilections as any other type of listener. They may not even be listening at all, despite being physically present and dependent on the musical performance. This mode of behavior as a fact of (concert) life is sometimes mentioned in recent popular books on music but seldom appears in older books; nor has it been part of musicological accounts of symphonic concerts, although scholars such as James H. Johnson (1995) and Peter Gay (1995) speak extensively about disruptions in historical performances. The chapter considers changes in the assessment of such listening in recent years and contemplates causes for these shifts.
5
Schmidt-Thomé, Philipp. Climate Change Adaptation. Oxford University Press, 2017. http://dx.doi.org/10.1093/acrefore/9780190228620.013.635.
Full textAbstract:
Climate change adaptation is the ability of a society or a natural system to adjust to the (changing) conditions that support life in a certain climate region, including weather extremes in that region. The current discussion on climate change adaptation began in the 1990s, with the publication of the Assessment Reports of the Intergovernmental Panel on Climate Change (IPCC). Since the beginning of the 21st century, most countries, and many regions and municipalities have started to develop and implement climate change adaptation strategies and plans. But since the implementation of adaptation measures must be planned and conducted at the local level, a major challenge is to actually implement adaptation to climate change in practice. One challenge is that scientific results are mainly published on international or national levels, and political guidelines are written at transnational (e.g., European Union), national, or regional levels—these scientific results must be downscaled, interpreted, and adapted to local municipal or community levels. Needless to say, the challenges for implementation are also rooted in a large number of uncertainties, from long time spans to matters of scale, as well as in economic, political, and social interests. From a human perspective, climate change impacts occur rather slowly, while local decision makers are engaged with daily business over much shorter time spans.Among the obstacles to implementing adaptation measures to climate change are three major groups of uncertainties: (a) the uncertainties surrounding the development of our future climate, which include the exact climate sensitivity of anthropogenic greenhouse gas emissions, the reliability of emission scenarios and underlying storylines, and inherent uncertainties in climate models; (b) uncertainties about anthropogenically induced climate change impacts (e.g., long-term sea level changes, changing weather patterns, and extreme events); and (c) uncertainties about the future development of socioeconomic and political structures as well as legislative frameworks.Besides slow changes, such as changing sea levels and vegetation zones, extreme events (natural hazards) are a factor of major importance. Many societies and their socioeconomic systems are not properly adapted to their current climate zones (e.g., intensive agriculture in dry zones) or to extreme events (e.g., housing built in flood-prone areas). Adaptation measures can be successful only by gaining common societal agreement on their necessity and overall benefit. Ideally, climate change adaptation measures are combined with disaster risk reduction measures to enhance resilience on short, medium, and long time scales.The role of uncertainties and time horizons is addressed by developing climate change adaptation measures on community level and in close cooperation with local actors and stakeholders, focusing on strengthening resilience by addressing current and emerging vulnerability patterns. Successful adaptation measures are usually achieved by developing “no-regret” measures, in other words—measures that have at least one function of immediate social and/or economic benefit as well as long-term, future benefits. To identify socially acceptable and financially viable adaptation measures successfully, it is useful to employ participatory tools that give all involved parties and decision makers the possibility to engage in the process of identifying adaptation measures that best fit collective needs.
Book chapters on the topic "Probe Gap Model"
1
Radišić, Jelena, and Andreas Pettersen. "Resilient and Nonresilient Students in Sweden and Norway—Investigating the Interplay Between Their Self-Beliefs and the School Environment." In Equity, Equality and Diversity in the Nordic Model of Education, 273–304. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-61648-9_11.
Full textAbstract:
AbstractUsing TIMSS 2015 data and a person-centred approach, the chapter focuses on academically resilient students in Norway and Sweden in grade eight. The self-belief profiles of academically resilient students compared with the nonresilient groups (i.e., low SES/low achievement, high SES/low achievement and high SES/high achievement) are investigated. Further, we evaluated the characteristics of the classroom environment for each of the profiles. After accounting for student SES and achievement, personal characteristics, advantages and disadvantages in the classroom and the school environment, we identified distinctive student profiles that might be more prone to risk. In the context of the equality–inequality paradigm, recognition of these profiles can strengthen the possibility to reduce the gap in battling different aspects of inequality across social groups. Concurrently, although we distinguish the same student groups across Sweden and Norway, their distribution within the countries differs. The latter results contribute to the ongoing debate on the dissolution/unification of the Nordic model, especially regarding particular trends within the Swedish education system.
2
Lefley, Frank, and Joseph Sarkis. "The Evaluation of Environmental Capital Projects." In Contemporary Approaches and Strategies for Applied Logistics, 37–57. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5273-4.ch002.
Full textAbstract:
Traditional capital investment appraisal models are, in many cases, biased against environmental projects. What is required is a multi-attribute approach that includes an assessment of the environmental benefits. The financial appraisal profile (FAP) model seeks to address this issue. By making the correct investment decision in the first place and by involving senior managers in the appraisal process, the organization is better placed to achieve project success. Adopting the FAP model with the inclusion of an environmental assessment in the form the “environmental score index” will help focus top management on an increasingly important corporate strategy issue. An illustrative case study is used to outline the important aspects of this new approach. The FAP approach, which is presented in this chapter, will help to fill a gap in the environmental investment literature, where there is a paucity of comprehensive, structured, and transparent methodologies that can prove acceptable to management decision makers from a variety of functions and viewpoints.
3
Das, Mononita Kundu, and Rituparna Das. "Gender and Water." In Gender Economics, 433–52. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7510-8.ch021.
Full textAbstract:
This chapter examines the welfare implication of wage revisions for two Indian unorganized sector female workers with opposite preference patterns for income and leisure in drought-prone zone. The female workers here face a gender-based wage gap and the inconveniences caused by water shortage adversely affect their effective incomes since females are the major users of water in the family. This chapter also makes a couple of recommendations for policymakers and legislators. It experiments with alternative utility functions in neoclassical microeconomic behavioural model framework.
4
Das, Mononita Kundu, and Rituparna Das. "Gender and Water." In Nationalism, Cultural Indoctrination, and Economic Prosperity in the Digital Age, 241–56. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-7492-9.ch011.
Full textAbstract:
This chapter examines the welfare implication of wage revisions for two Indian unorganized sector female workers with opposite preference patterns for income and leisure in drought-prone zone. The female workers here face a gender-based wage gap and the inconveniences caused by water shortage adversely affect their effective incomes since females are the major users of water in the family. This chapter also makes a couple of recommendations for policymakers and legislators. It experiments with alternative utility functions in neoclassical microeconomic behavioural model framework.
5
Höhn, Sebastian, Lutz Lowis, Jan Jürjens, and Rafael Accorsi. "Identification of Vulnerabilities in Web Services using Model-Based Security." In Electronic Services, 673–704. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-61520-967-5.ch041.
Full textAbstract:
In a service-oriented architecture, business processes are executed as composition of services, which can suffer from vulnerabilities. These vulnerabilities in services and the underlying software applications put at risk computer systems in general and business processes in particular. Current vulnerability analysis approaches involve several manual tasks and, hence, are error-prone and costly. Service-oriented architectures impose additional analysis complexity as they provide much flexibility and frequent changes within orchestrated processes and services. Therefore, it is inevitable to provide tools and mechanisms that enable efficient and effective management of vulnerabilities within these complex systems. Model-based security engineering is a promising approach that can help to fill the gap between vulnerabilities on the one hand, and concrete protection mechanisms on the other. The authors present an approach that integrates model-based engineering and vulnerability analysis in order to cope with the security challenges of a service-oriented architecture.
6
Greenlaw, Raymond, H. James Hoover, and Walter L. Ruzzo. "Evidence That NC Does Not Equal P." In Limits to Parallel Computation. Oxford University Press, 1995. http://dx.doi.org/10.1093/oso/9780195085914.003.0009.
Full textAbstract:
Why should we believe that NC does not equal P? One form of evidence is that many people have tried, but failed, to show them equal. More persuasive, perhaps, is the way they have failed, or rather, the character of the limited successes. Specifically, known approaches consistently leave a large gap between what we know how to solve by highly parallel algorithms, and general problems in P. In outline, the state of the art is as follows. General simulations are not fast: The best known parallel simulations of general sequential models give very modest improvements, basically reducing sequential time T to parallel time T/logT or √T, depending on the parallel model. Furthermore, 2TΩ(1) processors are needed to achieve even these modest improvements. Fast simulations are not general: Rapid simulations of sequential models by highly parallel models are known only for rather weak sequential models. Natural approaches provably fail: Certain natural approaches to highly parallel simulation are provably insufficient. Equivalently, in certain natural structured models of computation (Borodin [41]), one can prove that the analogs of NC and P are not equal, and indeed are separated by a nearly exponential gap, as suggested by the two points above. In this chapter we will present this evidence in more detail. The nature of the available evidence renders this chapter, especially Section 5.4, somewhat more technical than the rest of Part I. The reader may wish to skim or skip it, at least on first reading. First, consider the Generic Machine Simulation Problem introduced in Section 4.1. Intuitively, why should we expect this problem to be hard to parallelize? Notice that we defined the problem in terms of Turing machines as a technical convenience; they are not in any way fundamental to the result.
7
Perriam, Chris, and Darren Waldron. "LGBQ Themes and Responses." In French and Spanish Queer Film. Edinburgh University Press, 2016. http://dx.doi.org/10.3366/edinburgh/9780748699193.003.0004.
Full textAbstract:
The chapter probes responses to representations relating to lesbian, gay, bisexual and queer identities and desires. Three dominant themes emerge: (1) ageing among lesbians, gay men and bisexuals; (2) gay male, and, to a lesser extent, lesbian and bisexual desires and identities; and (3) a sense of shared experience, as a stake in community history or as a personalised mark of identity. The chapter reveals that investment, care, surprise, empathy, (self-) recognition and identification are recurring modes of engagement, and shows how viewers claim varying degrees of closeness to the subjects, characters and people on screen.
8
Kopley, Emily. "A Room of One’s Own, Woolf’s “little book on poetry”." In Virginia Woolf and Poetry, 107–35. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198850861.003.0004.
Full textAbstract:
In several essays concurrent with her major experimental works of the 1920s, Woolf proclaims that the novel will usurp the tools and the place of poetry. Most important among these essays is the book-length A Room of One’s Own (1929). Here Woolf identifies the lack of poet foremothers available as models to women writers. She urges young women to fill this gap by writing not poetry per se, but rather prose whose greatness qualifies it as “poetry.” Woolf wants to gain for prose, and by extension women writers, the prestige historically accorded to verse. This chapter sketches the historic link among English Studies, poetry, and patriarchy. This link contributed to Woolf’s vision of the novel as the democratic, feminist alternative to poetry. It also spurred her subtle challenge in A Room of One’s Own to Sir Arthur Quiller-Couch, who had doubted women’s ability to write poetry. This chapter concludes by considering the real women poets who inspired Woolf’s fiction of Judith Shakespeare.
9
Amato, Luanne M. "Barriers to a STEM Career." In Advances in Educational Marketing, Administration, and Leadership, 64–90. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-9108-5.ch004.
Full textAbstract:
Inequality of gender representation in science, technology, engineering, and mathematics (STEM) careers continues, despite the narrowing of the gender achievement gap. This chapter showcases original qualitative research that provides clearer insights into origins and effects of math anxiety as the reason females are less likely to choose (STEM) majors and related careers. The role of instruction methodology of the academic organization in perpetuating marginalization practices limits women's STEM achievement. The stage environment fit (SEF) theoretical model probes the relationship of the policies and procedures of the academic organization to the likelihood of female adult-student success in higher education. The American Statistical Association's (ASA) funding of the Guidelines for Assessment and Instruction in Statistics Education Report (GAISE) mandates reforms for mathematics instruction among the information about new research opportunities and the current state of STEM education in the United States.
10
Amato, Luanne M. "Barriers to a STEM Career." In Research Anthology on Adult Education and the Development of Lifelong Learners, 1469–95. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8598-6.ch075.
Full textAbstract:
Inequality of gender representation in science, technology, engineering, and mathematics (STEM) careers continues, despite the narrowing of the gender achievement gap. This chapter showcases original qualitative research that provides clearer insights into origins and effects of math anxiety as the reason females are less likely to choose (STEM) majors and related careers. The role of instruction methodology of the academic organization in perpetuating marginalization practices limits women's STEM achievement. The stage environment fit (SEF) theoretical model probes the relationship of the policies and procedures of the academic organization to the likelihood of female adult-student success in higher education. The American Statistical Association's (ASA) funding of the Guidelines for Assessment and Instruction in Statistics Education Report (GAISE) mandates reforms for mathematics instruction among the information about new research opportunities and the current state of STEM education in the United States.
Conference papers on the topic "Probe Gap Model"
1
Khangura, Sukhpreet Kaur, and Markus Fidler. "Available bandwidth estimation from passive TCP measurements using the probe gap model." In 2017 IFIP Networking Conference (IFIP Networking) and Workshops. IEEE, 2017. http://dx.doi.org/10.23919/ifipnetworking.2017.8264826.
Full text
2
Janssen, M., R. Mönig, J. Seume, H. Hönen, R. Lösch-Schloms, and H. E. Gallus. "The Model V84.3 Shot Tests: Compressor Flow Field Measurements and Evaluation." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-462.
Full textAbstract:
Detailed experimental investigations were carried out at the Siemens test-facility in Berlin to validate and develop further the compressor design of the Model V84.3 gas turbine and to generate a comprehensive data base for the verification of the flow calculation programs. The test facility enables Siemens to confirm the design with regard to performance and reliability in the full scale machine under full load and off-design condition. Various measuring techniques well established in the laboratory were applied to the full scale compressor to examine the flow field. Along with rather conventional 5-hole probes for measuring the flow field in the core region, miniaturized 3-hole probes were developed at the Turbomachinery Laboratory of the Technical University of Aachen, tested and finally used for the measurements of endwall boundary layer profiles and their development throughout the compressor. In addition to the probe measurements, wall static-pressure measurements, as well as probed vane measurements, were carried out. The paper briefly describes the test facility, the compressor under investigation, and the instrumentation for the flow measurements. A comparison of the 3-hole and 5-hole probe measurements is presented. The experimental results are compared with calculated results taken from a two-dimensional off-design calculation program with standard loss models. By means of the measured static-pressure rise at the casing wall and the total pressure distributions downstream of the rotor rows, a modification of the loss modeling was performed. The calculated flow field is compared to the results of the 3-hole and 5-hole probe measurements in terms of radial distributions for flow angle. Mach number and total pressure.
3
Sattel, Thomas, Dennis Roeser, and Stefanie Gutschmidt. "Multi-Physics Modeling of an Electro-Thermally Actuated Micro-Cantilever for Scanning Probe Microscopy." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40602.
Full textAbstract:
This article presents the nonlinear equations of motion and analysis of a smart micro-cantilever which was designed and fabricated for AFM (atomic force microscopy) technology. The model is derived from the mechanical continuum expressions and includes thermo-visco-elastic damping as well as the localized atomic force interaction between the tip and sample surface, which in turn is deduced from the Lennard-Jones potential. The modal dynamical system obtained from the continuum model and by means of the Galerkin decomposition is then numerically analyzed. The analysis begins with the study of equilibria and natural frequencies under the influence of the selected parameters, such as the direct current and gap between tip and sample. This is complemented by a brief dynamical analysis of the system in selected parameter domains. The multi-physics micro-cantilever exists in real life and these first results of work in progress serve our intentions of systematically investigating the static and dynamic behavior of the same experimentally in the future.
4
Benoni, Albert, and Reinhard Willinger. "Design Modification of a Passive Tip-Leakage Control Method for Axial Turbines: Linear Cascade Wind Tunnel Results." In ASME 2013 Turbine Blade Tip Symposium. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/tbts2013-2056.
Full textAbstract:
Tip-leakage losses can contribute up to one third of the overall losses in unshrouded axial turbine blades. A passive tip-leakage flow control method is used to reduce the tip-leakage loss. Taking into account a modified discharge coefficient model, an inclination of the injection against the tip-leakage flow direction is said to have an even better effect on reducing the tip-leakage loss. To prove the effect, linear cascade measurements have been carried out at three different gap widths from 0.85% to 2.50% chord length. The used geometry is an up-scaled turbine blade tip cross section with weak turning. A single blade is fitted with an injection channel which is inclined by 45° against the tip-leakage flow direction. The flow field of the modified blade was measured 0.31 axial chord length downstream of the cascade using a pneumatic five-hole probe. The tip-leakage loss is reduced by passive tip-injection and further by inclined injection. The reduction can be significant at small gap widths. Detailed results are presented for a gap width of 1.40% chord length.
5
Smout, Peter D., and Paul C. Ivey. "Investigation of Wedge Probe Wall Proximity Effects: Part 1 — Experimental Study." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-146.
Full textAbstract:
Conventional 3-hole wedge probes fail to measure the correct static pressure when operating in close proximity to a wall or boundary through which the probe is inserted. The free stream pressure near the outer wall of a turbomachine may be over indicated by upto 20% dynamic head. This paper reports a series of experiments aimed at quantifying this so-called ‘wall proximity effect’. It is shown from a factorial experiment that probe wedge angle, stem design and free-stream Mach number all have a significant influence. The yaw angle sensitivity of wedge probes is also found to depend on the proximity of the probe to the wall of introduction. Flow visualisation studies on large scale probe models are described, and a qualitative model of the probe local flow structures is developed. This model is used to explain the near wall characteristics of the actual size wedge probes. In Part 2 of this paper, the experimental data is used to validate CFD calculations of the flow field around a wedge probe. A simple analytical model of the probe/flow interaction is developed from the CFD solutions.
6
Parle, Dattatraya. "Probabilistic Design and Analysis of Pressure Measuring Probes for Creep Behavior." In ASME 2017 Gas Turbine India Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gtindia2017-4906.
Full textAbstract:
Pressure probes are typically used to measure the pressure of a fluid stream. These probes are designed to serve for 25 years life under operating pressure and temperature conditions. Therefore, such pressure probes are also designed for safe creep behavior. Typically creep is time dependent phenomenon and it can be classified as Primary, Secondary and Tertiary creep. In the literature, the creep phenomenon is studied analytically and numerically. Literature review reveals that creep analysis requires special material models and its selection depends on operating conditions. This work presents FEA based probabilistic design and analysis of pressure measuring probes using ANSYS which has several creep models depending on type of creep phenomenon. Probes in this study are subjected to primary and secondary creep. Therefore, this work proposes combined time hardening creep model. Combined time hardening model has 7 coefficients. This further increases the complexity of the model. Apart from the model complexity, there are various other design and operating parameters which further complicates the creep behavior. Some of the important design and operating parameters are length, diameter and tip dimensions along with pressure and temperature. Thus there are around 16 parameters which controls the creep behavior of pressure measuring probe. Traditional design process of probe is based on deterministic analysis which involves the use of safety factors as a way of accounting for uncertainty in design input parameters. This can often results in overly conservative designs. Moreover, to understand optimal creep behavior of probes under several uncertainties in input parameters becomes a challenging. Therefore, this work presents probabilistic approach as opposed to a deterministic approach to understand the combined effect of several uncertain parameters on creep behavior of probes. This work not only determines probability of probe failure more accurately but also determines the sensitivity of each parameter during creep phenomenon using FEA.
7
Chima, Rodrick V. "Calculation of Tip Clearance Effects in a Transonic Compressor Rotor." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-114.
Full textAbstract:
The flow through the tip clearance region of a transonic compressor rotor (NASA rotor 37) was computed and compared to aerodynamic probe and laser anemometer data. Tip clearance effects were modeled both by gridding the clearance gap and by using a simple periodicity model across the ungridded gap. The simple model was run with both the full gap height, and with half the gap height to simulate a vena-contracta effect. Comparisons between computed and measured performance maps and downstream profiles were used to validate the models and to assess the effects of gap height on the simple clearance model. Recommendations were made concerning the use of the simple clearance model. Detailed comparisons were made between the gridded clearance gap solution and the laser anemometer data near the tip at two operating points. The computed results agreed fairly well with the data but overpredicted the extent of the casing separation and underpredicted the wake decay rate. The computations were then used to describe the interaction of the tip vortex, the passage shock, and the casing boundary layer.
8
Yaras, M. I., and S. A. Sjolander. "Effects of Simulated Rotation on Tip Leakage in a Planar Cascade of Turbine Blades: Part I — Tip Gap Flow." In ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/91-gt-127.
Full textAbstract:
The paper presents further results from a continuing study on tip leakage in axial turbines. Rotation has been simulated in a linear cascade test section by using a moving-belt tip wall. Measurements were made inside the tip gap with a three-hole pressure probe for a clearance size of 3.8 percent of the blade chord. Two wall speeds are considered and the results are compared with the case of no rotation. As in other experiments, significant reduction in the gap mass flow rate is observed due to the relative motion. The detailed nature of the measurements allows the dominant physical mechanism by which wall motion affects the tip gap flow to be identified. Based on the experimental observations, an earlier model for predicting the tip gap flow field is extended to the case of relative wall motion. Part II of the paper examines the effect of the relative motion on the downstream flow field and the blade loading.
9
Pfau, A., J. Schlienger, D. Rusch, A. I. Kalfas, and R. S. Abhari. "Unsteady Flow Interactions Within the Inlet Cavity of a Turbine Rotor Tip Labyrinth Seal." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38271.
Full textAbstract:
This paper focuses on the flow within the inlet cavity of a turbine rotor tip labyrinth seal of a 2 stage axial research turbine. Highly resolved, steady and unsteady 3-dimensional flow data are presented. The probes used here are a miniature 5 hole probe of 0.9mm head diameter and the novel virtual four sensor fast response aerodynamic probe (FRAP) with a head diameter of 0.84mm. The cavity flow itself is not only a loss producing area due to mixing and vortex stretching, it also adversely affects the following rotor passage through the fluid that is spilled into the main flow. The associated fluctuating mass flow has a relatively low total pressure and results in a negative incidence to the rotor tip blade profile section. The dominating kinematic flow feature in the region between cavity and main flow is a toroidal vortex, which is swirling at high circumferential velocity. It is fed by strong shear and end wall fluid from the pressure side of the stator passage. The static pressure field interaction between the moving rotor leading edges and the stator trailing edges is one driving force of the cavity flow. It forces the toroidal vortex to be stretched in space and time. A comprehensive flow model including the drivers of this toroidal vortex is proposed. This labyrinth seal configuration results in about 1.6% turbine efficiency reduction. This is the first in a series of papers focussing on turbine loss mechanisms in shrouded axial turbines. Additional measurements have been made with variations in seal clearance gap. Initial indications show that variation in the gap has a major effect on flow structures and turbine loss.
10
Ainsworth, Roger W., John L. Allen, and J. Julian M. Batt. "The Development of Fast Response Aerodynamic Probes for Flow Measurements in Turbomachinery." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-023.
Full textAbstract:
The advent of a new generation of transient rotating turbine simulation facilities, where engine values of Reynolds and Mach number are matched simultaneously together with the relevant rotational parameters for dimensional similitude (Dunn et al [1988], Epstein et al [1984]. Ainsworth et al [1988]), has provided the stimulus for developing improved instrumentation for investigating the aerodynamic flows in these stages. Much useful work has been conducted in the past using hot-wire and laser anemometers. However, hot-wire anemometers are prone to breakage in the high pressure flows required for correct Reynolds numbers, Furthermore some laser techniques require a longer runtime than these transient facilites permit, and generally yield velocity information only, giving no data on loss production. Advances in semiconductor aerodynamic probes are beginning to fulfil this perceived need. This paper describes advances made in the design, construction, and testing of two and three dimensional fast response aerodynamic probes, where semiconductor pressure sensors are mounted directly on the surface of the probes, using techniques which have previously been successfully used on the surface of rotor blades (Ainsworth, Dietz and Nunn [1991]). These are to be used to measure Mach number and flow direction in compressible unsteady flow regimes. In the first section, a brief review is made of the sensor and associated technology which has been developed to permit a flexible design of fast response aerodynamic probe. Following this, an extensive programme of testing large scale aerodynamic models of candidate geometries for suitable semiconductor scale probes is described, and the results of these discussed. The conclusions of these experiments, conducted for turbine representative mean and unsteady flows, yielded new information for optimising the design of the small scale semiconductor probes, in terms of probe geometry, sensor placement, and aerodynamic performance. Details are given of a range of wedge and pyramid semiconductor probes constructed, and the procedures used in calibrating and making measurements with them. Differences in performance are discussed, allowing the experimenter to choose an appropriate probe for the particular measurement required. Finally, the application of prototype semiconductor probes in a transient rotor experiment at HP turbine representative conditions is described, and the data so obtained is compared with (PD solutions of the unsteady viscous flow-field.
Reports on the topic "Probe Gap Model"
1
Niebler, Rebecca. Abfallwirtschaftliche Geschäftsmodelle für Textilien in der Circular Economy. Sonderforschungsgruppe Institutionenanalyse, September 2020. http://dx.doi.org/10.46850/sofia.9783941627833.
Full textAbstract:
This master thesis explores the challenges for waste management business models in the field of textiles regarding the requirements of the circular economy, as well as improvement potentials in the current framework conditions. It is concerned with the research question: "Is it advisable to change the frame-work conditions at meso or macro level, with regard to business models for waste management companies in the textile sector that are oriented towards the requirements of the circular economy, and - if so - in what way?” The approach of the study is based on the delta analysis of the e Society for Institutional Analysis at the Darmstadt University of Applied Sciences. It compares the target state of the normative requirements with the actual state of the textile and waste management framework conditions and attempts to identify the gaps (the delta). Based on the delta, it develops approaches that are intended to help reduce the gaps. The thesis develops three business models for the target year 2025 in different areas: an exchange platform for sorters, recyclers and designers, an automatic sorting plant and a plant for fibre-to-fibre recycling of mixed materials. It is becoming clear that these business models cannot meet the target requirements for the circular economy. The analysis identifies the remaining gaps in the framework conditions as the main problem. For example, insufficient innovation impulses and the lack of competitiveness of secondary raw materials inhibit the actors from applying and using new technologies and business models. Restricted access to knowledge and information, as well as a lack of transparency between the actors, also prove to be problematic. In order to answer the research question, the study recommends altering the framework conditions at meso and macro level. It proposes a platform for cooperation between designers, the introduction of a material declaration system and an eco-design guideline for textiles as possible development options. In addition, this work offers a matrix of criteria to help the actors test and improve their new waste management business models regarding their suitability for the circular economy. The analysis is carried out from an outsider's perspective on the entire textile industry. It therefore cannot cover and deal with all aspects and individual circumstances of each player in detail. The necessary changes in the framework conditions that have been identified can therefore be used as a basis for further investigations.