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NOTE ON SOME CHARACTER FORMULAS
( Mahendra Pal Chaudhary ),( Sangeeta Chaudhary ),( Junesang Choi ) 호남수학회 2016 호남수학학술지 Vol.38 No.4
Chaudhary and Choi [7] presented 14 identities which reveal certain interesting interrelations among character formulas, combinatorial partition identities and continued partition identities. In this sequel, we aim to give slightly modified versions for 8 iden- tities which are chosen among the above-mentioned 14 formulas.
NOTE ON SOME CHARACTER FORMULAS
Chaudhary, Mahendra Pal,Chaudhary, Sangeeta,Choi, Junesang The Honam Mathematical Society 2016 호남수학학술지 Vol.38 No.4
Chaudhary and Choi [7] presented 14 identities which reveal certain interesting interrelations among character formulas, combinatorial partition identities and continued partition identities. In this sequel, we aim to give slightly modified versions for 8 identities which are chosen among the above-mentioned 14 formulas.
Return Migrants and International Transfer of Technology : A Case Study of Azad, Jammu and Kashmir
Chaudhary, M. Aslam,Hamdani, S. Nisar H. 세종대학교 국제경제연구소 2002 Journal of Economic Integration Vol.17 No.2
The study aims exploring contributions of return migrants, particularly, their role in international transfer of technology in Azad,Jammu and Kashmir(AJK). Besides, reasons for migration and impact on employment generation, as well as, characteristics of migrant(s) are identified who are most likely to promote the transfer of technology. For this purpose, a field survey was conduted in Azad, Jammu and Kashmir, an area with a high rate of international migration. Econometric models were estimated to draw empirical support for determining of the issues. The empirical evidences indicate that education level, demographic profile, career planning before migration, vocational training, duration of stay abroad and specific type of employer are some of the important determinants of migrants who are likely to transfer technology. The return migrants who spend on luxuries are less likely to contribute in this respect. Such migrants possess specific set of characteristics(s). As per our knowledge, this source of international transfer of technology has not been identified so far. Besides, different technologies like improvement in infoware, humanware, technoware and organisational skills etc, which contribute to improve human capital are identified. The study also provides information on re-employment pattern of return migrants. It further highlights impacts of return migrants on the promotion of local businesses and employment generation. Based upon the evidences, the study provides policy guideline to fully benefit from migrants. A labour policy to provide information about the types of feasible businesses, incentives to bring new technology and facilitation of setting up business could enhance local development. The study contributes by identifying an important new source of international transfer of technology(s) through migrants. The policy direction are provided to explored this new channel to transfer new technologies and, therefore, accelerate economic development in developing areas. The study would also be equally beneficial for other areas, which experience return migrants.
REPRESENTATIONS OF RAMANUJAN CONTINUED FRACTION IN TERMS OF COMBINATORIAL PARTITION IDENTITIES
Chaudhary, Mahendra Pal,Choi, Junesang The Honam Mathematical Society 2016 호남수학학술지 Vol.38 No.2
Adiga and Anitha [1] investigated the Ramanujan's continued fraction (18) to present many interesting identities. Motivated by this work, by using known formulas, we also investigate the Ramanujan's continued fraction (18) to give certain relationships between the Ramanujan's continued fraction and the combinatorial partition identities given by Andrews et al. [3].
Chaudhary, Girdhari,Jeong, Yongchae THE INSTITUTE OF ELECTRICAL ENGINEERS 2017 IEEE Microwave and Wireless Components Letters Vol. No.
<P>In this letter, the analytical design method of a reflection-type coupled line all-pass circuit with arbitrary predefined wideband flat group delay (GD) is presented. The proposed circuit consists of 90 degrees hybrid and coupled lines with a short-circuited load. The proposed structure is simple and does not require any iterative process to obtain optimum circuit parameters. Theoretical and experimental results are provided for validation of the proposed structure. The prototype circuits were fabricated at a center frequency of 2.5 GHz with 2 and 4 ns flat GD responses. The measurement results agreed well with the simulation and theoretical predicted results.</P>
Negative Group Delay Phenomenon Analysis in Power Divider: Coupling Matrix Approach
Chaudhary, Girdhari,Yongchae Jeong IEEE 2017 IEEE transactions on components, packaging, and ma Vol.7 No.9
<P>This paper presents a negative group delay (NGD) phenomenon analysis of a power divider using the coupling matrix approach. The proposed power divider can provide an arbitrary power division ratio with a minimal effect on group delay variations. From the analysis, it is found that the proposed circuit can provide positive group delay (PGD) and NGD through different transmission paths. The NGD can be generated without a lumped resistor and can be controlled by source-resonator coupling and unloaded-quality factor (Qu) of resonators. For experimental validation, power dividers with PGD and NGD of 0.3 and -1 ns, respectively, were designed and fabricated. The measurement results agreed well with the simulation and the predicated values. The proposed power divider topology is useful for the performance improvement of microwave circuits and systems.</P>