Control charts are powerful tools to monitor quality characteristics of services or production processes. However, in some processes, the performance of process or product cannot be controlled by monitoring a characteristic; instead, they require to be controlled by a function that usually refers as a profile. This study suggests employing exponentially weighted moving average (EWMA) and range ...

Isotactic poly (1-butene), ipbu-1, was synthesized by using a metallocene catalyst. The thermodynamic phase behavior of polymer–organic solvents systems is very important in every polymer application.  In this paper, the solid–liquid equilibrium of ipbu-1 with different organic solvents (1-heptyne, cyclo octane) was studied by a mathematical model. By considering the experiments temperature...

In this paper a new design for 6 bit DMTL phase shifter with only 32 MEMS switches is proposed. The reduction in number of switches in ordinary 6 bit phase shifter from 63 to 32 is due to combination of one 5.625 degree for least significant bit and 11.25 degree for the rest of the switches. Decreasing the number of the switches reduces the die-size as well as loss of the CPW line. Analytical s...

In a world that is not predictable, improvisation and evolution are more than a luxury: they are a necessity. The challenge of design is not a matter of getting rid of the emergent, but rather of making it an opportunity for more creative and more sustainable solutions. User-centered and participatory design approaches have focused primarily on activities taking place at design time. These appr...

For voiced speech the main excitation of the vocal tract occurs at the end of the glottal closing phase when the rate of change of the flow reaches its absolute maximum. This study presents a straightforward method that yields a numerical value to characterize the effect of the main excitation on vocal intensity. The method, Energy Ratio by Modified Excitation (ERME), takes advantage of the glo...

Software changes during its lifetime. Likewise, specifications change during their design time, e.g. by removing, adding or changing operations. In a refinement-based approach to software design, we moreover do not deal with a single but with a chain of specifications, related via refinement. Changes thus need to be consistently made to all specifications in the chain so as to keep the refineme...

Ab.rfruct -Based on a well-known property of FIR half-hand filters, this correspondence shows how the design time for equiripple half-hand filters can be reduced by a considerable amount. The observation which leads up to this improved procedure also places in evidence new implementation schemes, which simultaneously ensure low passband and stopbund sensitivities. Extension of the method to Mth...

So far, oscillators have been designed to perform a specific task while the key parameters such as phase-noise and power consumption are set by the hardware design and not by the communication system in an adaptive way. As the communication channel is often subject to changes, the conditions under which the oscillator operates should be changed as well. Therefore, the concept of design for adap...

Reconfiguration emerged as a key concept to cope with constraints regarding performance, power consumption, design time and costs posed by the growing diversity of application domains. This work gives an overview of several relevant reconfigurable architectures and design techniques developed by the authors in different projects and emphasizes the effective role of reconfigurability in embedded...

This paper presents a design method for linear phase filter with arbitrary cutoff frequencies using cosine modulation. The approach can be applied to any existing linear phase filters with rational cutoff frequencies. Halfband filter is used to derive approximately maximally-flat filter with different cutoff frequencies, and the resulting filter can be expressed in closed form when the original...