The DC open-loop voltage Gain is a very important specification for amplifiers. In order to increase this specification, in this paper, we have proposed an improved folded cascode gain boosted amplifier (improved FCGBA) which has extremely large DC open-loop voltage gain. Compared to traditional FCGBA, this novel structure needs only one auxiliary amplifier, so it is energy saving. Finally, wit...

In learning to use software, people spend at least 30% of their time on dealing with errors. It could therefore be desirable to exploit users’ errors rather than to avoid them. That is, to include error information in a manual to support users in dealing with errors. An experiment was performed to examine the functionality of such error information in a manual for a word processor. Two manuals ...

the nomad communities played an important role in the socio-economic status of the iranian society from the beginning of the twentieth century. following the political events of reza shah such as settling strategy, the nomads lost their importance and marginalized. the present paper aims study the social and cultural transitions among the turkman tribe to find out how settling strategy led to t...

Selective flocculation has long been suggested as a method for the treatment of ultra-fine particles typical of which are those produced in a de-sliming process ahead of flotation. In this paper the results of the coal de-mineralization, using synthetic polyacrylamide polymers, are presented. A prescreening test on the suitability of the polymers using Run-Of-Mine (R.O.M.) coal and artificial m...

The first steps of planet formation are marked by the growth and crystallization of sub–micrometer–sized dust grains accompanied by dust settling toward the disk midplane. In this paper we explore whether the first steps of planet formation are affected by the presence of medium–separation stellar companions. We selected two large samples of disks around single and binary T Tauri stars in Tauru...

Beef cattle feedlots contain unconsolidated surface material that accumulates within feedlot pens during a feeding cycle. Runoff from feedlot surfaces is diverted into settling basins. The storage capacity of the settling basins will be substantially reduced if large quantities of solid material are transported in runoff from the feedlot surfaces. The objective of this study was to identify the...

This paper presents a study of the effect of settling error due to finite gain-bandwidth product (GBW) and slew-rate (SR) of opamps in SC Σ∆ A/D modulators. Based on the theoretical point of view, a new architecture for cascade multibit Σ∆ A/D modulators is proposed to achieve better performances at low oversampling ratio. The performance improvement is analyzed and compared with traditional ca...