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OALib Journal期刊

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Trade and Women Employment in China: An Insight into the Low Presence of Women Workforce in the 21st Century Corporate China  [PDF]
Anirban Nandi
Open Journal of Business and Management (OJBM) , 2019, DOI: 10.4236/ojbm.2019.71005
Abstract:
As China enjoys being the second largest economy in the world, it’s women can said to have the credit for its country’s economic development in this 21st century. This paper studies the women employment factor in China and identifies the issue of lower female workforce in Chinese businesses despite of Chinese women, from various walks of life excelling in the corporate world, and studies their income and the employment discrimination faced by them. This research takes a correlation methodology approach to establish the cause of such lower women presence in the Chinese businesses. The study uses re-gression analysis to establish the relationships between the women employed in Chinese businesses and the success rate of those businesses. The rate of discrimination against women in employment by viz. family, male peers and company officials is also being determined. The research concludes with women’s significance in big Chinese corporate giants highlighting their con-tribution towards them through continued presence, the need of increasing female income and bringing in a level playing field for women through equal opportunity policies, the future prediction on the rate of firm profits and the need for further research on the broader aspects of the issue specific to the topic in concern.
Profile of Cuban Women Involved in Sex Tourism—A Financial Perspective  [PDF]
Anirban Nandi
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1105073
Abstract:
With the country’s lack of access to financial resources and wages being low in the formal sector of employment, some women in Cuba have devised sex tourism as the way of survival and fulfilling their family and personal needs. This paper identifies the profile of those Cuban women who are involved in the sex tourism in Cuba and examines how this industry is financially benefiting them. This study follows the method of reviewing other research literatures on sex tourism in Cuba, analyzing and differentiating them with one another. The study first discusses Cuba as a tourist destination, the kind of profile the women carries with themselves by being in the sex tourism industry and the existing links of the sex tourism and the local residents in Cuba with its financial impacts. The ways and the aspects in which sex tourism is financially benefitting the local residents especially the women are revealed. The conclusion discusses the importance of sex tourism to Cuba through the association or the local women with the financial impacts of sex tourism and defining the women’s nature of engagement, and the need for detailed future research on other broader facets surrounding this study.
New Physics in b -> s bar(s) s Decay. II: Study of B -> V1 V2 Modes
Soumitra Nandi,Anirban Kundu
Physics , 2005, DOI: 10.1088/0954-3899/32/6/007
Abstract: Various nonleptonic decay channels mediated by the quark-level subprocess $b\to s\bar{s} s$ show hints of deviation from the Standard Model expectations. We analyse the double-vector decay $B\to\phi K^\ast$ with different generic new physics structures and find the constraints on the parameter spaces of new physics. The allowed parameter spaces are compatible with, but further narrowed down from, those obtained from a similar analysis using pseudoscalar modes. We also discuss further predictions for this channel as well as for $B_s\to\phi\phi$, and show how even a partial measurement of the observables may discriminate between different models of new physics.
Possibility of large lifetime differences in neutral B meson systems
Dighe, Amol;Kundu, Anirban;Nandi, Soumitra
High Energy Physics - Phenomenology , 2007, DOI: 10.1103/PhysRevD.76.054005
Abstract: We investigate new physics models that can increase the lifetime differences in the $B_q$--$\bar{B}_q$ systems ($q = d,s$) above their standard model values. If both $B_q$ as well as $\bar{B}_q$ can decay to a final state through flavour dependent new physics interactions, the so-called Grossman bound may be evaded. As examples, we consider the scalar leptoquark model and $\lambda''$-type R-parity violating supersymmetry. We find that models with a scalar leptoquark can enhance $\Delta\Gamma_s/\Gamma_s$ all the way up to its experimental upper bound and $\Delta\Gamma_d/\Gamma_d$ to as much as $\sim 2.5%$, at the same time allowing the CP violating phase $\beta_s$ to vary between $- 45^\circ$ and $20^\circ$. R-parity violating supersymmetry models cannot enhance the lifetime differences significantly, but can enhance the value of $\beta_s$ up to $\sim \pm 20^\circ$. This may bring the values of $\Delta\Gamma_q/\Gamma_q$ as well as $\beta_s$ within the measurement capabilities of $B$ factories and LHCb. We also obtain bounds on combinations of these new physics couplings, and predict enhanced branching ratios of $B_{s/d} \to \tau^+ \tau^-$.
Probing CPT Violation in B Systems
Anirban Kundu,Soumitra Nandi,Sunando Kumar Patra
Physics , 2010, DOI: 10.1103/PhysRevD.81.076010
Abstract: We discuss how a possible violation of the combined symmetry CPT in the B meson system can be investigated at the LHC. We show how a tagged and an untagged analysis of the decay modes of both B(d) and B(s) mesons can lead not only to a possible detection of a CPT-violating new physics but also to an understanding of its precise nature. The implication of CPT violation to a large mixing phase in the B(s) system is also discussed.
Enhanced $B_s$--$\bar{B}_s$ lifetime difference and anomalous like-sign dimuon charge asymmetry from new physics in $B_s \to τ^+ τ^-$
Amol Dighe,Anirban Kundu,Soumitra Nandi
Physics , 2010, DOI: 10.1103/PhysRevD.82.031502
Abstract: New physics models that increase the decay rate of $B_s \to \tau^+ \tau^-$ contribute to the absorptive part of $B_s$--$\bar{B}_s$ mixing, and may enhance $\Delta\Gamma_s$ all the way up to its current experimental bound. In particular, the model with a scalar leptoquark can lead to a significant violation of the expectation $\Delta\Gamma_s \leq \Delta\Gamma_s$ (SM). It can even allow regions in the $\Delta\Gamma_s$-$\beta_s$ parameter space that are close to the best fit obtained by CDF and D\{O} through $B_s \to J/\psi \phi$. In addition, it can help explain the anomalous like-sign dimuon charge asymmetry observed recently by D\O. A measurement of $BR(B_s \to \tau^+ \tau^-)$ is thus crucial for a better understanding of new physics involved in $B_s$--$\bar{B}_s$ mixing.
Analysis of Recurrent Linear Networks for Enabling Compressed Sensing of Time-Varying Signals
MohammadMehdi Kafashan,Anirban Nandi,ShiNung Ching
Mathematics , 2014,
Abstract: Recent interest has developed around the problem of dynamic compressed sensing, or the recovery of time-varying, sparse signals from limited observations. In this paper, we study how the dynamics of recurrent networks, formulated as general dynamical systems, mediate the recoverability of such signals. We specifically consider the problem of recovering a high-dimensional network input, over time, from observation of only a subset of the network states (i.e., the network output). Our goal is to ascertain how the network dynamics lead to performance advantages, particularly in scenarios where both the input and output are corrupted by disturbance and noise, respectively. For this scenario, we develop bounds on the recovery performance in terms of the dynamics. Conditions for exact recovery in the absence of noise are also formulated. Through several examples, we use the results to highlight how different network characteristics may trade off toward enabling dynamic compressed sensing and how such tradeoffs may manifest naturally in certain classes of neuronal networks.
Two-loop neutrino masses with large R-parity violating interactions in supersymmetry
Dey, Paramita;Kundu, Anirban;Mukhopadhyaya, Biswarup;Nandi, Soumitra
High Energy Physics - Phenomenology , 2008, DOI: 10.1088/1126-6708/2008/12/100
Abstract: We attempt to reconcile large trilinear R-parity violating interactions in a supersymmetric (SUSY) theory with the observed pattern of neutrino masses and mixing. We show that, with a restricted number of such interaction terms with the $\lambda'$-type couplings in the range (0.1-1.0), it is possible to forbid one-loop contributions to the neutrino mass matrix. This is illustrated with the help of a `working example' where an econnomic choice of SUSY parameters is made, with three non-vanishing and `large' R-parity violating terms in the superpotential. The two-loop contributions in such a case can not only generate the masses in the requisite order but can also lead us to specific allowed regions of the parameter space.
$B_s\to D_s K$ as a Probe of CPT Violation
Anirban Kundu,Soumitra Nandi,Sunando Kumar Patra,Amarjit Soni
Physics , 2012, DOI: 10.1103/PhysRevD.87.016005
Abstract: We discuss some possible signals of CPT violation in the $B_s$ system that may be probed at the Large Hadron Collider (LHC). We show how one can construct combinations ofobservables coming from tagged and untagged decay rates of $B_s\to D_s^\pm K^\mp$ that can unambiguously differentiate between CPT violating and CPT conserving new physics (NP) models contributing in $B_s-\bar B_s$ mixing. We choose this particular mode as an illustrative example for two reasons: (i) In the Standard Model, there is only one decay amplitude, so it is easier to untangle any new physics; (ii) $B_s$ being a neutral meson, it is possible to unambiguously identify any sign of CPT violation that occurs only in mixing but not in decay. We define an observable which is useful to extract the CPT violating parameter in $B_s$ decay, and also discuss how far the results are applicable even if CPT violation is present in both mixing and decay.
Invariant features of spatial inequality in consumption: the case of India
Arnab Chatterjee,Anindya S. Chakrabarti,Asim Ghosh,Anirban Chakraborti,Tushar K. Nandi
Quantitative Finance , 2015, DOI: 10.1016/j.physa.2015.09.019
Abstract: We study the distributional features and inequality of consumption expenditure across India, for different states, castes, religion and urban-rural divide. We find that even though the aggregate measures of inequality are fairly diversified across states, the consumption distributions show near identical statistics, once properly normalized. This feature is seen to be robust with respect to variations in sociological and economic factors. We also show that state-wise inequality seems to be positively correlated with growth which is in accord with the traditional idea of Kuznets' curve. We present a brief model to account for the invariance found empirically and show that better but riskier technology draws can create a positive correlation between inequality and growth.
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