Search results for "soft"

Paperwork at 78kph

1996

Hidden Markov Random Field model and BFGS algorithm for Brain Image Segmentation

2016

Brain MR images segmentation has attracted a particular focus in medical imaging. The automatic image analysis and interpretation became a necessity. Segmentation is one of the key operations to provide a crucial decision support to physicians. Its goal is to simplify the representation of an image into items meaningful and easier to analyze. Hidden Markov Random Fields (HMRF) provide an elegant way to model the segmentation problem. This model leads to the minimization problem of a function. BFGS (Broyden-Fletcher-Goldfarb-Shanno algorithm) is one of the most powerful methods to solve unconstrained optimization problem. This paper presents how we combine HMRF and BFGS to achieve a good seg…

WITTA Between Globalization and Localization: New Challenges in View of Geopolitical Developments, Impending Digitalization, and Artificial Intellige…

2020

Internationalization of higher education also concerns the training of translators, interpreters, and other language service providers. Their services will continue to be of paramount importance for global development, where they become increasingly important as a bridge for economic and cultural exchanges. The Belt and Road Initiative of China will strengthen the demand for language services in an increasingly transnational environment. Since new forms of cooperation are necessary and desirable, WITTA as a new association should strive at becoming an autonomous transnational Think Tank that generates policy-oriented research, analysis, and advice on domestic and international issues in the…

Security of information in IT systems

2005

The aim of the paper is to increase human awareness of the dangers connected with social engineering methods of obtaining information. The article demonstrates psychological and sociological methods of influencing people used in the attacks on IT systems. Little known techniques are presented about one of the greater threats that is electromagnetic emission or corona effect. Moreover, the work shows methods of protecting against this type of dangers. Also, in the paper one can find information on devices made according to the TEMPEST technology. The article not only discusses the methods of gathering information, but also instructs how to protect against its out-of-control loss.

Revenue models in cloud computing

2012

Cloud computing brings new possibilities, allowing software firms to sell their software products using the Software-as-a-Service (SaaS) model. SaaS provides opportunities for flexible pricing but creates challenges on how to achieve a profitable revenue stream. In this multicase study, the revenue models of five SaaS providers were examined. The main interest of the study was to investigate the different revenue models and the reasons for using particular revenue models. The revenue models were found to be mainly based on software renting, with a variety of pricing strategies. For SaaS providers, software renting generates a steady and predictable stream of revenue. The software renting mo…

Corporate Governance and Company Law Reform: a German perspective

2005

Corporate crises and international trends in corporate governance have revealed the need for reform, and resulted in a great number of changes in corporate law. In spite of this, the existing legal framework for corporate governance in Germany presents itself reluctant to major changes. The German approach to reform has focused on the improvement of corporate monitoring by the supervisory board. It neither questions the two-tier structure, nor does it reconsider the existing representation of shareholders or other stakeholders under the current form of co-determination. The German Corporate Governance Code represents a new instrument of soft law and its recommendations are likely argued to …

Benefits of Software Renting in Cloud Business

2012

In the new era of computing, software can be sold and delivered as a cloud service, and software renting has become a strategic tool to compete in the market. In this multi-case study, software renting was found to help the case firms to (i) differentiate themselves from competitors; (ii) increase their competitive advantage by making the software available for a larger customer group, and (iii) decrease the price of software by using centralized software delivery and maintenance. peerReviewed

Signal processing procedures for the evaluation of the cardiovascular effects in the obstructive sleep apnea syndrome

2002

A new index, the cross-power index (CPI), is proposed to quantify the severity of obstructive sleep apnea syndrome (OSAS) in terms of its cardiovascular effects. On the basis of the influences that recurring drops in oxygen saturation have on systolic blood pressure variability of OSAS patients, CPI is defined as the integral of the cross-spectrum modulus between systolic blood pressure and oxygen saturation. In a test group of 22 subjects, CPI correctly identified all 15 OSAS patients included in the pool. Moreover, evaluation of CPI in six OSAS patients sleeping with and without a CPAP (continuous positive airway pressure) device demonstrated that CPAP treatment substantially reduced the …

A statistical model for magnitudes and angles of wavelet frame coefficients and its application to texture retrieval

2014

Abstract This paper presents a texture descriptor based on wavelet frame transforms. At each position in the image, and for each resolution level, we consider both vertical and horizontal wavelet detail coefficients as the components of a bivariate random vector. The magnitudes and angles of these vectors are computed. At each level the empirical histogram of magnitudes is modeled by a Generalized Gamma distribution, and the empirical histogram of angles is modeled by a different version of the von Mises distribution that accounts for histograms with 2 modes. Each texture is characterized by few parameters. A new distance is presented (based on the Kullback–Leibler divergence) that allows g…

Cloud Services Pricing Models

2013

A major condition for commercial success is a well-defined pricing strategy, however, cloud service providers face many challenges around pricing. Clearness and transparency in pricing is beneficial for all the actors in the ecosystem, where the currently existing abundance of different pricing models makes decision making difficult for service providers, partners, customers and competitors. In this paper, the SBIFT pricing model is evaluated and updated to cloud context. As a result, a 7-dimensional cloud pricing framework is proposed that helps clarifying the possible pricing models in order to let companies differentiate themselves from competitors by price. The framework can be used als…