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Let $R_{0, n}$\, be the real Clifford algebra generated by vectors $e_{i}$, $i=1, 2, \cdots, n$, where and if $i\neq j$, $i, j=1, 2, \cdots, n$. is the unit element. In this paper, the Hilbert boundary value problem in the unit ball is investigated.
The paper introduces an approach to solve the problem of generating a sequence of jobs that minimizes the total weighted tardiness for a set of jobs to be processed in a single machine. An Ant Colony System based algorithm is validated with benchmark problems available in the OR library. The obtained results were compared with the best available results and were found to be nearer to the optimal....
Most stencil computations allow tile-wise concurrent start, i.e., there always exists a face of the iteration space and a set of tiling hyperplanes such that all tiles along that face can be started concurrently. This provides load balance and maximizes parallelism. However, existing automatic tiling frameworks often choose hyperplanes that lead to pipelined start-up and load imbalance. We address...
In current study, simulation analysis was conducted to investigate the fluid/structure interaction (FSI) phenomenon in two, three, and four stacking chips package with through silicon via (TSV) during encapsulation process. In actual packaging, the visualization of FSI phenomenon is very hard due to the package size limitation, low availability of suitable equipment, and high experimental setup cost...
Today, the churn phenomenon has been considered in many applications as an important outcome. Social networks can be considered as one of the most important applications with the mentioned outcome. Churn in social networks depends on the users' activity in a communication environment and appears if this activity is less than a required extent. Swarm Intelligence algorithms(SI), assumed to be the proper...
The evolution of the shape of high-intensity acoustic pulses at the apex of an anisotropic elastic wedge is described by an evolution equation which contains an effective nonlinearity of second order, if the symmetry of the geometry is sufficiently low. The strength of this nonlinearity is governed by a kernel function. For silicon as a strongly anisotropic wedge material, this kernel function has...
This paper describes practices of the Supplementary Instruction (SI) Problem-Solving Workshop in helping entering engineering students develop the concept of problem solving and obtain the necessary knowledge and skills required to succeed in their courses.
Transition behavior in large deflection of un-symmetrically layered piezoelectric plate under pretension due to lateral load is studied. von Karman plate theory for large deflection is utilized and extended to the case of an un-symmetrically layered plate including a piezoelectric layer. The derived governing equations are simplified by neglecting the arising nonlinear terms for a linear consideration,...
Traditionally, CMUTs are modelled using the isotropic plate equation and this leads to deviations between analytical calculations and FEM simulations. In this paper, the deflection profile and material parameters are calculated using the anisotropic plate equation. It is shown that the anisotropic calculations match perfectly with FEM while an isotropic approach causes up to 10% deviations in deflection...
Empowered by rapid advance of high performance computer architectures and software, it is now possible for scientists to perform high resolution simulations with unprecedented accuracy. Nowadays, the total size of data from a large-scale simulation can easily exceed hundreds of terabytes or even petabytes, distributed over a large number of time steps. The sheer size of data makes it difficult to...
Advantages of the switched-capacitor power converters are pointed out. Operation principles of ideal asymmetrical classical inductorless power converters with fractional conversion ratio are explained and simple design equations are derived. The results are justified with PSPICE simulation of a representative 5V to 3V power converter with ideal switches and capacitors but also using models of real...
It is well known that the current definition of the kilogram in the SI, which is defined by reference to a prototype artifact, is unsatisfactory due to the fact that the mass of the prototype is drifting. Some of the other definitions of the base units of the SI are also due for revision and improvement. In October 2011 the CGPM passed a resolution approving plans for new definitions of the kilogram,...
The proposed changes to the SI are generating considerable debate and discussion not just in metrology but also in the field of fundamental constants. This is an excellent time to reflect on general topics involving fundamental constants, units and the SI. In particular, it is useful to prepare for some of the obvious questions that will be forthcoming from the general public.
The new generation of airborne hyperspectral image sensors sensitive in the thermal infrared domain gives the opportunity for new urban applications like classification, thermal budget at building level, etc. Nevertheless, due to the high spatial variability of such landscape, the signal acquired by each pixel remains complex as it results of the contribution of several radiative signals coming from...
This paper demonstrates a novel device using TLM (transmission line model) method to shorten the operation time of specific contact resistance measurement. It takes about 1 min for each measurement point, and obtaining full-scale solar cell mapping is achievable in an acceptable time. The mappings of emitter sheet resistance and specific contact resistance are obtained on 125×125 mm size solar cells...
This paper discusses a broadcasting multi-digital signature algorithm based on the elliptic curve cryptosystem. The method overcomes the problem of poor speed digital signature verification due to more complex operations, reduces relatively complex multiplication and point multiplication in the original broadcast multiple digital signature scheme, and avoids matrix inversion. It improves the speed...
Many real-world optimization problems are dynamic (time dependent) and require an algorithm that is able to continuously track a changing optimum over time. In this paper, we investigate a recently proposed algorithm for dynamic continuous optimization, called MLSDO (Multiple Local Search algorithm for Dynamic Optimization). MLSDO is based on several coordinated local search agents and on the archiving...
We present an approach for extracting 3-sentence evidence-based summaries relevant to clinical questions. We approach this task as one of query-focused, extractive, single-document summarisation using sentence-specific statistics for each target sentence. We incorporate simple statistics and domain knowledge and show that such an approach is effective for identifying informative sentences from medical...
The freeware program OPAL 2 computes the optical losses associated with the front surface of a Si solar cell. It calculates the losses for any angle of incidence within seconds, where the short computation time is achieved by decoupling the ray tracing from the Fresnel equations. Amongst other morphologies, OPAL 2 can be used to assess the random-pyramid texture of c-Si solar cells, or the ‘isotexture’...
Prepaid charging, an essential option for the accounting of cloud services, provides effective financial control for both service providers and customers. However, it has to be supported by real-time credit checking and cost calculation. These real-time actions consume resources of the providers' network and impose high overhead. To tackle this issue, we present a scalable accounting solution in which...
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