Scope of Knit Denim Products Using Reactive Dye and Convenient Washing Effects

Authors: Md. Abdul Hannan, Shamsuzzaman Sheikh, S. M. Fijul Kabir, Md. Alamgir Hossain, Md. Abdur Rouf

Abstract—In this work, the use of reactive dye has been successfully introduced on knit denim. Various washing effects were developed both in mechanical and chemical process. Also the current paper introduces some types of knitted denim products on single cylinder circular knitting machine with different yarns and stitches, and the style and strength of these types of knitted denim met almost all the requirements of denim fabric after dyeing and finishing, they were tested by fabric strength tester for testing physical and mechanical properties. Keywords—Knit denim, structure of knit denim, washing types, knit denim samples.

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Study of Factors Influencing Hardness Behaviour of Austempered Gray Iron (AGI) Using Taguchi Method

Authors: T Sarkar, G. Sutradhar

Abstract—Heat treatment of gray cast iron produces austempered gray iron (AGI). Austempered gray iron (AGI) is a new class of engineering material with better properties than regular as-cast conventional gray iron. The properties of AGI can be varied over a wide range by varying the heat treatment process parameters. In the present work, hardness behaviour of austempered gray iron (AGI) had been studied with the help of Taguchi’s (L27) orthogonal array (OA) design. The (L27) orthogonal array design is constructed using three process parameters like- Austenitizing, austempering temperature and quenching time. The results are then analyzed using hardness (BHN) as system response to obtain the optimal combination of process parameters. To verify the experimental results confirmation tests were carried out. Analysis of variance (ANOVA) is performed to observe the significance of factors influencing each of the process parameters and their interactions. Finally as-cast and austempered microstructure are observed and an attempt has been made to correlate the obtained hardness values with the microstructure.

Keywords—Austempered gray iron (AGI), Hardness, Microstructure, Taguchi method, Analysis of variance (ANOVA).

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The Research on Cooperation Coordination Model of Transboundary Water Pollution

Authors: Changmin, Li, Dong, Sun, Xiaoqiang, Xie

Abstract—At first this paper introduces some related research at home and abroad about lake basin transboundary water pollution, and puts forward several basic assumptions combining the lake basin situation such as pollutants artificial regulation and pollutant water separation disposal, etc. Then bases on this foundation, constructs the minimum cost of the whole region, and proposes the coordination model of the lake basin transboundary water pollution. Then takes advantage of Poyang Lake for empirical analysis, and gets the function of pollutant reduction cost and function of environmental damage cost by means of multiple regression analysis with the five main data of Poyang Lake from 2001 to 2010.And obtains the solution through the coordination model and the function, then by comparison finds the solution is better than the actual pollution reduction plan. At last, the paper talks about the deficiencies and improvement.

Keywords—Cooperation model; Poyang Lake; Multiple regression; Transboundary; Environmental damage cost

[1] Bowman, M., Debray, S. K., and Peterson, L. L. 1993. Reasoning about naming systems.

[2] Ma J, Hipel K W, De M, et al. 2008. Transboundary water policies: Assessment , comparison and enhancement . Water Resource Manage.

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[6] Zhao L.J. (2009).Model of collective cooperation and reallocation of benefits related to conflicts over water pollution across regional boundaries in a chinese river basin.Environment Modelling & Software.24,603-610.

[7] Zhao L.J,Li C.M.et al.(2012)Harmoniazing model with transfer tax on water pollution across regional boundaries in a China’s lake basin.European Journal of Operational Research.225,377-382.

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Design of Operational Transconductance Amplifier with High Gain

Authors: Kishan Rathod, Kumar Keshamoni, Sanathkumar G

Abstract- In recent years interests have been seen in wireless system and software radio using sigma-delta modulators to digitize signals near the front end of radio receivers. Such applications necessitate clocking the modulators at a high frequency (MHz or above). A continuous-time implementation using transconductors and integrators rather than discrete time implementation using switched capacitors is preferred for high frequency operation. A novel cross coupled operational transconductance amplifier (OTA) has been developed with high linearity at high frequency which can be used in design of continuous time sigma delta modulator. The proposed cross coupled OTA achieves gain of 35dB, third order Intermodulation (IM3) of - 73dB at a high frequency range of 70 MHz with an effective Transconductance of 3.34mA/V. The proposed OTA is implemented in 180nm CMOS technology

Keywords-- Analog and Mixed Signal IC Design, OTA, Linearization, Source Degeneration and Cross Coupling

[1] J.silva-Martinez and E.sanchez,”CMOS transconductance amplifiers, architectures and filters:a tutorial”,in IEEE proceedings on circuits ,devices,vol.147,Feb 2007.pp 3-12.

[2] J.silva-Martinez and Lewinksi”,OTA linearity enhancement technique for high frequency application”,CICC 2007,sept 2007 pp 3-12

[3] J.silva Martinez and b.Nauta “A CMOS transconductance filter technique for very high frequencies”,IEEE solid state circuits,vol 27,Feb 2012,pp 142-153

[4] Mohammed Arifuddin Sohel,Dr.Kchennakeshava reddy,Dr.Syed Abdul Sattar,”Linearity enhancement of operational transconductance amplifier using source degeneration”,Vol.4,April 2013,pp-257-263

[5] Richard schrier,M.Snelgrove,”Bandpass sigma delta modulation”,IEEE electronics letter,vol.25,2008,pp.1560-1561. [6] Richard schrier ,G.temes,”Understanding sigma delta modulators”,MJ.wiley,IEEE press 2005

[7] B.Razavi,”principles of data conversion system design”,New York,IEEE press 2005 [8] 8.P.R Gray,P.J Hurst,S.H Lewisand R.J Meyer,”Analysis and design of Analog Integrated Circuits”,Newyork,wiley:2001.

[9] T.Lin,C.Wu,”A current mirror OTA with 160MHz GBW in 0.18um CMOS”,IEEE trans.Circuit and systems,vol.54,pg 131-135,feb

[10] F.A.P Baruqui,A.Petralgia,”Three stage CMOS OTA with large capacitive loads with efficient

Taxonomy of Big Data and Business Analytics

Author: Hak J. Kim

Abstract- In recent years interests have been seen in wireless system and software radio using sigma-delta modulators to digitize signals near the front end of radio receivers. Such applications necessitate clocking the modulators at a high frequency (MHz or above). A continuous-time implementation using transconductors and integrators rather than discrete time implementation using switched capacitors is preferred for high frequency operation. A novel cross coupled operational transconductance amplifier (OTA) has been developed with high linearity at high frequency which can be used in design of continuous time sigma delta modulator. The proposed cross coupled OTA achieves gain of 35dB, third order Intermodulation (IM3) of - 73dB at a high frequency range of 70 MHz with an effective Transconductance of 3.34mA/V. The proposed OTA is implemented in 180nm CMOS technology

Keywords-- Analog and Mixed Signal IC Design, OTA, Linearization, Source Degeneration and Cross Coupling.

[1] J.silva-Martinez and E.sanchez,”CMOS transconductance amplifiers, architectures and filters:a tutorial”,in IEEE proceedings on circuits ,devices,vol.147,Feb 2007.pp 3-12.

[2] J.silva-Martinez and Lewinksi”,OTA linearity enhancement technique for high frequency application”,CICC 2007,sept 2007 pp 3-12

[3] J.silva Martinez and b.Nauta “A CMOS transconductance filter technique for very high frequencies”,IEEE solid state circuits,vol 27,Feb 2012,pp 142-153

[4] Mohammed Arifuddin Sohel,Dr.Kchennakeshava reddy,Dr.Syed Abdul Sattar,”Linearity enhancement of operational transconductance amplifier using source degeneration”,Vol.4,April 2013,pp-257-263

[5] Richard schrier,M.Snelgrove,”Bandpass sigma delta modulation”,IEEE electronics letter,vol.25,2008,pp.1560-1561.

[6] Richard schrier ,G.temes,”Understanding sigma delta modulators”,MJ.wiley,IEEE press 2005

[7] B.Razavi,”principles of data conversion system design”,New York,IEEE press 2005 [8] 8.P.R Gray,P.J Hurst,S.H Lewisand R.J Meyer,”Analysis and design of Analog Integrated Circuits”,Newyork,wiley:2001.

[9] T.Lin,C.Wu,”A current mirror OTA with 160MHz GBW in 0.18um CMOS”,IEEE trans.Circuit and systems,vol.54,pg 131-135,feb

[10] F.A.P Baruqui,A.Petralgia,”Three stage CMOS OTA with large capacitive loads with efficient.