1,890 research outputs found
Towards minimizing the energy of slack variables for binary classification
No full text20.09.13 KB. Ok to add to spiral, author says conference already available online.This paper presents a binary classification algorithm that is based on the minimization of the energy of slack variables, called the Mean Squared Slack (MSS). A novel kernel extension is proposed which includes the withholding of just a subset of input patterns that are misclassified during training. The later leads to a time and memory efficient system that converges in a few iterations. Two datasets are exploited for performance evaluation, namely the adult and the vertebral column dataset. Experimental results demonstrate the effectiveness of the proposed algorithm with respect to computation time and scalability. Accuracy is also high. In specific, it equals 84.951% for the adult dataset and 91.935%, for the vertebral column dataset, outperforming state-of-the-art methods. © 2012 EURASIP
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Picking up the slack ::law, institutions, and Canadian climate policy /
No full text"Canada has over-promised and under-delivered on climate change, setting weak goals and allowing carveouts, exceptions, and exemptions to undermine its climate policies. Why, in an era when climate change is front of mind for so many people, have we failed to make progress? The question has been the source of heated debate across the political spectrum. In Picking Up the Slack, Andrew Green draws together different perspectives on the challenge facing Canada to offer an accessible account of the ideas and institutions that have impeded climate change action. Picking Up the Slack embraces the complexity of the problem, showing that its sources lie deep in Canada's institutional arrangements--pointing to the role played by federal-provincial power sharing arrangements, the heavy reliance on discretion in Canadian law, the role of the courts, and the impact of social norms. Working from a broad perspective that incorporates the insights of economics, law, political science, and philosophy, Green unpacks the features of Canadian policy making that determine the successes and failures of climate policies. His message is ultimately optimistic: Picking Up the Slack sheds light on how we can bring about meaningful movement towards a fair and positive future."-
Dominant genes for colorectal cancer are not rare
No full textThe genetic basis for colorectal cancer was investigated by complex segregation analysis of a published series of consecutive pedigrees ascertained through patients undergoing treatment for colorectal cancer. Analysis favoured a dominant gene or genes with a frequency of 0·006 with a lifetime penetrance of 0·63. These genes account for 81% of colorectal cancer in patients under 35, however, by 65 about 85% are phenocopies
On the slack phenomena and snap force in tethers of submerged floating tunnels under wave conditions
No full textUnder severe sea wave conditions, the mooring tethers of submerged floating tunnel (SFT) might go slack. It may cause the structure failure during the service lifetime of SFT. The paper investigated SFT dynamics when going through tether slacking and the related snap force under wave conditions. Besides the nonlinearity of fluid drag and of structural geometry for a relative large structure displacement, the problem is characterized by the nonlinearity due to the discontinuity in axial stiffness of the tethers. To include these nonlinearities, the method of Lagrange energy is used to build the governing equations of SFT motion, and a bilinear oscillator is introduced to simulate the mooring tether operating in an alternating slack-taut state. The sensitivities of the occurrence of tether slacking to wave height and wave period are investigated. Results show that at a large wave height SFT tether will go slack and snap force occurs. SFT responses are categorized into three types of state according to the dynamic response characteristics of tether tension. Effects of two fundamental structure parameters, buoyancy-weight ratio (BWR) and inclined mooring angle (IMA), on the dynamic responses of SFT are analyzed. A slack-taut map of SFT tethers is built. It intuitively describes the occurrences of slack and snap force with different combinations of the two parameters. An analytical approach for slack prediction by deriving the slack criterion is provided to reveal the mechanism of the presented slack-taut map. By present research, the authors tried to make their effort to provide an alternative philosophy for SFT structural design on concerning preventing the occurrence of tether slacking and snap force. (C) 2011 Elsevier Ltd. All rights reserved
Factors regulating sediment fluxes over an engineered foredune and adjacent dune slack
No full textThis study aims to identify and understand the annual scale sediment transport patterns in a fully engineered dune-dune slack system that was created from seabed sediments for grey dune and moist dune slack habitat creation at the Delfland coast (the Netherlands). The annual morphological development was analysed using LiDAR elevation data. Daily aeolian sediment transport was simulated across the foredune and in the adjacent dune slack, using the numerical aeolian sediment transport model AeoLiS. All simulated transport events were combined to reveal how aeolian sediment transport behaves on an annual scale. Planting two continuous strips of marram grass along the top of the foredune induced rapid growth of the foredune, while limiting sediment supply to the dune slack. The armouring layer of shells that formed at the surface of the engineered topography, functioned as a supply-limiting factor and restricted the sediment entrainment and deflation of the dune slack. Therefore, the formation of a moist dune slack habitat may take longer for this engineered case than in a natural case with similar boundary conditions
On the two essential concepts for SFT: synergetic buoyancy-weight ratio and slack-taut map
No full textIn the submerged floating tunnel (SFT) design and future construction, buoyancy-weight ratio (BWR) and slack-taut performance (STP) are two intrinsic issues with respect to the SFT dynamic response and stability under the structural and external loadings. BWR is defined as the ratio of tunnel buoyancy to the whole tunnel weight. Our experiments and numerical simulations indicate that BWR dominates the dynamic response of SFT and is the most important parameter to be considered in SFT design. For this, we re-state the essential concept of "Synergetic range of BWR". This is regarded as, for an SFT structure with related environmental conditions, a suitable range of BWR value exists, which will lead to less dynamic response and more stable for the SFT. STP is the tether slacking and the related snap force under sea wave conditions. Our simulation results show that SFT tether may go slack and induce snap force at a large wave height at a certain combination of BWR and inclined morning angle (IMA) of the tether. As the second essential concept for SFT, a Slack-Taut Map of SFT is constructed, which describes the occurrences of slack and snap force (under a certain wave condition) as a function of BWR and IMA. (C) 2016 The Authors. Published by Elsevier Ltd
Cloth Bucket or Vessel.
No full textPatent for a cloth bucket or vessel to place milk or water in to keep it cool when ice is not available. One places the bucket in the shade and the air circulates freely through the bucket. The bucket is thick enough that it will not drip, but is breathable to allow aeration and evaporation
Study of Sediment Transport in a Tidal Channel‐Shoal System: Lateral Effects and Slack‐Water Dynamics
No full textLateral flows redistribute sediment and influence the morphodynamics of channel-shoal systems. However, our understanding of lateral transport of suspended sediment during high and low water slack is still fairly limited, especially in engineered estuaries. Human interventions such as dike-groyne structures influence lateral exchange mechanisms. The present study aims to unravel these mechanisms in a heavily engineered, turbid channel-shoal system in the Changjiang Estuary, using a high-resolution unstructured-grid three-dimensional model and in situ observations. Analysis of model results reveals two typical transport patterns during slack-water conditions, that is, shoal-to-channel transport during low water slack and channel-to-shoal transport during high water slack. A momentum balance analysis is carried out to explain mechanisms driving the lateral transport of suspended sediment during high water slack, revealing the importance of lateral pressure gradients, Coriolis force, and the curvature-induced term. Groyne fields play a crucial role in sediment transport, especially during low water slack. A model scenario in which one groyne is removed reveals that groyne fields strongly influence lateral sediment transport. The decomposition of the sediment transport flux reveals that the turbidity maximum is shaped by a balance between seaward advection by residual flows, and landward transport by tidal pumping and gravitational circulation. Within the turbidity maximum, sediment is laterally redistributed by lateral flows during slack-water conditions, greatly influencing estuarine channel morphology.</p
The Effect of Budget Participation, Information Asymmetry, Budget Emphasis, and Organizational Commitment on Budgetary Slack: Pengaruh Partisipasi Anggaran, Asimetri Informasi, Budget Emphasis Dan Komitmen Organisasi Terhadap Budgetary Slack
No full textThis study aims to analyze the effect of budgetary participation, information asymmetry, budget emphasis, and organizational commitment on budgetary slack. The sampling technique used in this research is purposive sampling. the criteria determined by the author are the sample selected only by respondents related to the process of budget preparation, implementation and accountability. In this case, it is the activity program planning for each SKPD which consists of the head of the service, the secretary, the head of the finance sub-section. Based on the questionnaire criteria, 144 questionnaires were distributed (48 SKPD x 3 Respondents). This study uses multiple linear regression analysis techniques to test the hypothesis with the SPSS version 27 data processing tool. The results of this study indicate that budgetary participation has an effect on budgetary slack. Information Asymmetry Affects Budgetary Slack. Budget Emphasis Influences Budgetary Slack. Organizational Commitment Influences Budgetary Slack
Organizational slack and performance: the impact of outliers
No full textExtending initial theory development and empirical studies conducted in the early 1980s, the investigation of the relationship between slack resources and the performance of the firm has experienced renewed attention. Over the past 25 years enough empirical research has been conducted that researchers have begun to question the frequently found ambiguous results. We assess the impact statistical outliers may have on the relationship between organizational slack and firm performance trying to determine whether the positive, curvilinear, or ambiguous results
that have been reported are impacted by the presence of outliers. We found that the measures of organizational slack were highly variable due to five general factors. When the outliers, extreme values, were statistically identified and removed, the relationship between organizational slack (Available Slack) and performance (ROA) became non-linear and consistent over years. Implications suggest that future research should consider the potential impact that non-normal distributed data could have on the validity of findings, particularly when employing data from archival sources. Suggestions for future research in the slack-performance relationship are offered
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