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Harison E.,Sami Shamoon College of Engineering
Information and Management | Year: 2010

U.S. legislation provides protection to database contents by intellectual property rights (IPRs) only if "a minimal degree of creativity" was involved in their creation. Although data collection may involve significant investments, factual content is not protected. The goal of the European Database Directive was to guarantee legal provisions for database content and digitized collections. However, the Directive has prompted a public debate about the accessibility to data sets for public use. We reviewed the legal status of database components and assessed the impact of both legislation regimes on a firm's strategies and policies. © 2010 Elsevier B.V. All rights reserved. Source


Mezhericher M.,Sami Shamoon College of Engineering
European Journal of Pharmaceutics and Biopharmaceutics | Year: 2014

The phenomenon of development of drying-induced stresses has been given a through consideration in the literature on drying of many products. At the same time, to the best of our knowledge, the open published sources contain no information on drying stresses in pharmaceutical granules prepared by continuous manufacturing methods. To study the appearance and evolution of drying-induced stresses in pharmaceutical granules during their production, in this work a theoretical model of drying of single wet pharmaceutical granule has been developed and successively validated by published experimental data obtained on ConsiGma™ continuous from-powder-to-tablet production line (GEA Pharma Systems). The results demonstrate that elevated temperatures of drying air result in faster drying process (which reduces the specific cost of the final product), but, on the other hand, quick drying leads to substantial drying-induced stresses which may damage the granule microstructure, resulting in cracking or even breakage of granules. The drying-induced stresses increase with drying temperature, porosity and size of dense non-hollow granules. The negative effects promoted by the drying-induced stresses should be taken into consideration when choosing operating conditions of continuous production lines including drying of pharmaceutical granules. © 2014 Elsevier B.V. All rights reserved. Source


Laslo Z.,Sami Shamoon College of Engineering
International Journal of Project Management | Year: 2010

It is well known that the progress of R&D projects has more and more begun to rely on the availability of individual experts who are generally scarce and expensive. The matrix structure considers periodic staffing of project teams which has been found to be efficient for non-scarce human resources but is impractical for individual experts. Our objective is to develop and evaluate an alternative approach for resource planning and scheduling that might be useful for project portfolio management. The method we suggest is an extension of a recently developed optimization model for a job-shop with several machines and chance-constrained deliveries. Our method determines in advance the hiring and releasing points of individual experts that maximize economic gain subject to chance-constrained delivery commitments. For this purpose, we use a simulation based on a greedy priority dispatching rule as well as a cyclic coordinate descent search-algorithm. A benchmarking of the staffing of project teams and the integrative methods shows that integrated planning and scheduling is a very useful tool for the decision-making process in project portfolio management. © 2009 Elsevier Ltd and IPMA. Source


Bykhovsky D.,Ben - Gurion University of the Negev | Arnon S.,Sami Shamoon College of Engineering
Journal of Lightwave Technology | Year: 2015

The growing demand for high interconnection speed in next-generation computers is driving the technology shift for communication from the electronic to the optic domain. One of the favored interconnection technologies for this task is the free-space optical interconnect (FSOI). FSOI technology uses laser links between computer components and provides a lower bound on propagation delay due to the low index of refraction of air, when compared with the indexes common in waveguide technologies. FSOIs based on dc-biased optical orthogonal frequency-division multiplexing (DCO-OFDM) may provide excellent data throughput in intensity modulation/direct detection systems. However, the main drawback limiting the implementation of FSOIs is the inevitable tradeoff between interconnection density and the crosstalk level, resulting from the diffraction effect and from optical misalignment. The purpose of this paper is to promote improved interconnection density of such FSOIs by use of inherent DCO-OFDM resource allocation capabilities. The crosstalk-resulted interference was formulated as joint multilink bit-and-power allocation optimization. The theoretical analysis reveals general guidelines for dense FSOI. Further, a reduced-complexity numerical suboptimal algorithm for joint multilink bit-and-power allocation was proposed. The simulation results show that the proposed suboptimal algorithm outcome is close to the theoretical optimal performance. © 2015 IEEE. Source


Bykhovsky D.,Sami Shamoon College of Engineering
Applied Optics | Year: 2015

Free-space optical (FSO) communication may be severely influenced by the inevitable turbulence effect that results in channel gain fluctuations and fading. The objective of this paper is to provide a simple and effective simulator of the weak-turbulence FSO channel that emulates the influence of the temporal covariance effect. Specifically, the proposed model is based on lognormal distributed samples with a corresponding correlation time. The simulator is based on the solution of the first-order stochastic differential equation (SDE). The results of the provided SDE analysis reveal its efficacy for turbulent channel modeling. ©2015 Optical Society of America. Source

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