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The password paradox states that simple passwords are simple to remember but easy to break, but complex passwords that are difficult to hack are also difficult to remember. Is there a better way?. [ABSTRACT FROM AUTHOR]

The article discusses possible advances in quantum computers and physical computers, looking at machines which could be able to solve problems which are considered unsolvable by the Church-Turing thesis. The author argues that a supertasking physical computer would be able to solve problems which are too complex to be computed by a Turing machine, a computational device created by the logician Alan Turing, and looks at relativistic physics which could allow such a computer to function.

ln-phase/quadrature-phase (l/Q) errors in the implementation of a digital predistortion (DPD) system based on a direct-conversion structure have proven to be a limiting performance factor in modern communication systems. This work presents a method o f time domain compensation fTDQ for frequency-dependent channel imbalances in wideband DPD systems. Compared with the widely used frequency domain compensation method, this method has lower computational complexity. Experimental results show that this method improves transceiver loop normalized mean squared error (NMSE) for 20 and 60 MHz Long Term Evolution (LTE) signals by 10.9and 11.3 dB, respectively. Adjacent channel power ratio (ACPR) is improved by more than 6 and 8 dB, respectively. [ABSTRACT FROM AUTHOR]

The article shows that the complexity of the calculations for determining the total composite phase noise can be reduced while maintaining a reasonable accuracy. Determining the total composite phase noise is a complex calculation requiring knowledge of the phase noise of the reference and microwave oscillators, the reference multiplication efficiency factor and the phase-locked loop frequency response as a function of the noise injected at the reference and the noise injected by the microwave oscillator. Following two parameters may help reduce the complexity: one, the frequency and phase noise of the reference oscillator, and two, the frequency and phase noise of the microwave oscillator.

An interview with Kayatangi Prize winner Erik Demaine is presented. He notes that computational complexity theory is inapplicable for games like Chess, Checkers and Go, however there is an algorithmic solution to Nim. Demaine is engaged in solving protein folding. He also shares his works on geometry, algorithms and foldings and their impact on the modern life.

Presents an update on computers, software and peripherals for industrial applications. Development of the CFD-CADalyzer 2006 computer software from ESI Group; Functional effectiveness of the Star-P software for computational problems; Features of the Autodesk Buzzsaw online collaborative project management site.

Focuses on the algorithmic contributions of Richard M. Karp in simplifying computational complexity. Recipient of the 2004 Benjamin Franklin Medal from the Franklin Institute; Complexity issues on polynomial and nonpolynomial (NP) problems; Karp's NP-Complete problem, which is a class of hard problems that all simplify to a single hard, NP problem.

Reports on the growing number of U.S. companies exploring the use of complex adaptive system modeling, a simulation method on their businesses. Potential applications of the simulation method on various industries; Genesis of the method; Objectives of the complex adaptive system theory project undertaken by Procter & Gamble Co. in partnership with BiosGroup Inc. and other organizations; Risk posed by complexity modeling.

The article focuses on the function of accelerometers which are made by microelectromechanical systems (MEMS) technology. Among other applications, accelerometers are cited to be used to stabilize cameras and support cellphone navigation interfaces. It cites that accelerometers can sense a number of actions from the orientation of a digital picture frame to vibrations in games because the quality of sensor data limits the kinds of movements which can be detected.

The article focuses on the issue regarding the rapid expansion of complexity of embedded-system software in the U.S. According to the article, exponential improvements in hardware capacity made possible by Moore's Law have expanded the size and complexity of embedded-system software. In response to this situation, the amount of software deployed in each new revision of many embedded software products doubles every 18-36 months. One method to tackling the growing size and complexity of modern embedded-system software is to divide these large systems into many smaller components, each isolated from its neighbors by abstract encapsulation and isolation barriers.

This article reports that Altair Engineering Inc., has deployed PBS Professional 7.0SP1, the next generation of the company's PBS Professional technology. PBS Professional technology optimizes the utilization of enterprise computing resources by aggregating hardware and software assets, and intelligently scheduling computational workloads based on business policies. Michael Humphrey, Altair's vice president of Enterprise Computing, remarked that in this latest release, the company has concentrated on ease of use and flexibility enhancements in its scheduling module. These new features help reduce costs and improve operational efficiencies for customers who operate heterogeneous data center environments. Customers who operate heterogeneous high-performance computing infrastructures comprised of SMP systems, clusters and hybrid systems can increase resource efficiencies and reduce job turnaround times with PBS Professional 7.0SP1. Engineers and scientists have more flexibility to easily specify where their jobs run or they can let PBS schedule the job onto the first available platform that meets their resource requirements.

Informs that according to Donald McCloskey's column in the July 1995 issue of Scientific American, the cost of adding and multiplying numbers has reduced over the previous 18 months.