Informatics

The Extrapolated Crank–Nicolson Orthogonal Spline Collocation Method for a Quasilinear Parabolic Problem with Nonlocal Boundary Conditions
For a quasilinear parabolic problem in one space variable with nonlocal boundary conditions, we formulate and analyze the extrapolated Crank–Nicolson orthogonal spline collocation method with $C^1$ splines of degree $ge $3. We establish an optimal order error bound in the discrete maximum norm in time and the continuous maximum norm in space. We present numerical results which confirm the the...


Wann sind Lieferaufträge profitabel?
Der Beitrag zielt auf die Optimierung von Frei-Haus-Belieferungen ab und betrachtet damit das letzte Teilstück der Wertschöpfungskette. Es wird angenommen, dass Handel im E-Commerce letztendlich nur profitabel sein kann, wenn der Gesamtwert der erfüllten Aufträge (im Vergleich zur Maximierung der Anzahl der Aufträge) maximiert wird. Dabei müssen auch die Kosten der Auslieferung berücksic...
Ein selbstregelnder Informationsbeschaffungsalgorithmus zur Vermeidung von Auswahlbedauern bei multiperspektivischen Entscheidungsfindungen
In einer Welt mit einer zunehmenden Zahl von Entscheidungen müssen die Menschen die Informationen, die sie sich beschaffen, um fundierte Entscheidungen zu treffen, die sie zukünftig nicht bereuen, sorgfältig auswählen. Dies reicht von alltäglichen Entscheidungen bis zu solchen, die von Experten in der Wirtschaft getroffen werden. Die Autoren stellen einen neuartigen Informationsbeschaffung...


On some highly efficient derivative free methods with and without memory for solving nonlinear equations
We present derivative free multipoint methods of optimal eighth and sixteenth order convergence for solving nonlinear equations. The schemes are based on derivative free two-point methods proposed by Petković et al. [Petković, M. S., Džunić, J. and Petković, L. D. [2011] "A family of two-point methods with memory for solving nonlinear equations," Appl. Anal. Discrete Math.5, 298–317], wh...
Towards Implicit User Modeling Based on Artificial Intelligence, Cognitive Styles and Web Interaction Data
A key challenge of adaptive interactive systems is to provide a positive user experience by extracting implicitly the users' unique characteristics through their interactions with the system, and dynamically adapting and personalizing the system's content presentation and functionality. Among the different dimensions of individual differences that could be considered, this work utilizes the cog...


The influence of social networks and homophily on correct voting
There is empirical evidence suggesting that a person's family, friends, or social ties influence who a person votes for. Sokhey & McClurg (2012) find that as political disagreement in a person's social network increases, then a person is less likely to vote correctly. We develop a model where voters have different favorite policies and wish to vote correctly for the candidate whose favorite...
Applying support vector regression analysis on grip force level-related corticomuscular coherence
Voluntary motor performance is the result of cortical commands driving muscle actions. Corticomuscular coherence can be used to examine the functional coupling or communication between human brain and muscles. To investigate the effects of grip force level on corticomuscular coherence in an accessory muscle, this study proposed an expanded support vector regression (ESVR) algorithm to quantify ...

Robust Spatial-Domain Based Super-Resolution Mosaicing of CubeSat Video Frames: Algorithm and Evaluation
In this paper, a spatial domain based super-resolution mosaicing system and its evaluation results are presented. This algorithm incorporates two main algorithms, an image mosaicing algorithm and a super-resolution-reconstruction algorithm. Huber-based prior information is used to address the ill-posed nature of the super resolution problem. To test the efficiency of the proposed algorithm, fou...
Phase Noise Jitter Synchronization for Coherent Optical OFDM via Pilot-Data-Aided and Wiener Filter
Modulation (M-QAM) coherent optical orthogonal frequency division multiplexing (CO-OFDM) signal employing a unique pilot’s system design, Feed forward maximum likelihood phase estimator as well as Wiener filter-type Minimum Mean square error (MMSE) interpolator. The wiener filter relies upon Kolmogorov type to interpolate the estimated phase noise with M taps. A 20 Gb/s CO-OFDM via 4-QAM, 16-...

On-line and dynamic time warping for time series data mining
Dynamic time warping (DTW) is a robust method used to measure similarity of time series. To speed up the calculation of DTW, an on-line and dynamic time warping is proposed to the field of time series data mining. A sliding window is used to segment a long time series into several short subsequences, and an efficient DTW proposed to measure the similarity of each pair of short subsequences. Mea...
Interval valued intuitionistic fuzzy sets in $Gamma $-semihypergroups
The notion of interval valued intuitionistic fuzzy sets was introduced by Atanassov and Gargov as a generalization of the notion of intuitionistic fuzzy sets and interval valued fuzzy sets. In this paper, we initiate a study on interval valued intuitionistic fuzzy sets in $Gamma $-semihypergroups. We introduce the notions of interval valued intuitionistic fuzzy left (right, two sided) $Gamma $-...

Robust MMSE Design With Asynchronous Interference Mitigation in Cooperative Base Station Systems
This paper investigates minimum mean square error (MMSE) with asynchronous interference mitigation in cooperative base station systems. We consider the asynchronous transmission because of the different propagation times between the base station (BS) and mobile stations (BSs). Meanwhile, the channel quantization errors duo to channel quantization is taken into account in our analysis. The propo...
Will New Antenna Materials Enable Single Path Multiple Access (SPMA)?
The aim of this paper is to introduce a novel frequency reuse concept especially for macro cellular networks to substantially increase the mobile network capacity, and simultaneously to avoid the implementation of low efficient small cells. Single path multiple access (SPMA) utilizes the characteristics of independent propagation paths for particular geographical location in the coverage area o...
Usability@90mph: Presenting and evaluating a new, high–speed method for demonstrating user testing in front of an audience
This article documents the authors’ attempt to develop a quick, inexpensive, and reliable method for demonstrating user testing to an audience. The resulting method, Usability@90mph, is simple enough to be conducted at minimal expense, fast enough to be completed in only thirty minutes, comprehensible enough to be presented to audiences numbering in the hundreds, and yet sophisticated enough ...
Ethnic media and politics: The case of the use of the Internet by Uyghur diaspora
The role of the active production and consumption of various forms of media on the ethnic groups and diasporas has long been debated among scholars from different disciplines. Currently the use of the Internet has become the focal point of these studies. In recent years, the Uyghur diaspora has been increasingly using the Internet and cyberspace in order to reach their goals of "being the voice...