4,419 research outputs found
Generalized Solutions for Quantum Mechanical Oscillator on K\"{a}hler Conifold
We study the possible generalized boundary conditions and the corresponding
solutions for the quantum mechanical oscillator model on K\"{a}hler conifold.
We perform it by self-adjoint extension of the the initial domain of the
effective radial Hamiltonian. Remarkable effect of this generalized boundary
condition is that at certain boundary condition the orbital angular momentum
degeneracy is restored! We also recover the known spectrum in our formulation,
which of course correspond to some other boundary condition.Comment: 7 pages, latex, no figur
Continuum robots and underactuated grasping
We discuss the capabilities of continuum (continuous backbone) robot structures in the performance of under-actuated grasping. Continuum robots offer the potential of robust grasps over a wide variety of object classes, due to their ability to adapt their shape to interact with the environment via non-local continuum contact conditions. Furthermore, this capability can be achieved with simple, low degree of freedom hardware. However, there are practical issues which currently limit the application of continuum robots to grasping. We discuss these issues and illustrate via an experimental continuum grasping case study. <br><br> <i>This paper was presented at the IFToMM/ASME International Workshop on Underactuated Grasping (UG2010), 19 August 2010, Montréal, Canada.</i>
RECENT MARKETING TECHINQUES ON SUPER MARKETS: IT’S IMPACT ON RETAILERS
Marketing itself has a wide variety of flavors based on consumers, media & business in today’s evolving & dynamic market place. According to American Marketing Institution “Marketing is an activity, set of instructions & process for creating, communicating & exchanging offerings that have value for customers, clients, partners & society at large.” Marketing includes all necessary steps taken by the organization inorder to sell its product & not only sell it but sell it with a good profit margin. Philip Kotler has rightly stated that “Marketing is meeting the needs of customers at a profit.” The organizations plan various strategies to win over its competitors when it comes about selling of products with wide profit margin. Many techniques are selected by organizations to attract mass consumers towards their product. Some of these marketing strategies are discussed below- The organizations main strategy in constructing its marketing plans is to combine all its marketing goals into one comprehensive goal. Always marketing research should be the base for marketing strategies. The focus should be on right product mix in order to achieve the most of profit potential & sustainability of the business. Basically marketing strategy is the foundation for marketing plan
Low Degree Metabolites Explain Essential Reactions and Enhance Modularity in Biological Networks
Recently there has been a lot of interest in identifying modules at the level
of genetic and metabolic networks of organisms, as well as in identifying
single genes and reactions that are essential for the organism. A goal of
computational and systems biology is to go beyond identification towards an
explanation of specific modules and essential genes and reactions in terms of
specific structural or evolutionary constraints. In the metabolic networks of
E. coli, S. cerevisiae and S. aureus, we identified metabolites with a low
degree of connectivity, particularly those that are produced and/or consumed in
just a single reaction. Using FBA we also determined reactions essential for
growth in these metabolic networks. We find that most reactions identified as
essential in these networks turn out to be those involving the production or
consumption of low degree metabolites. Applying graph theoretic methods to
these metabolic networks, we identified connected clusters of these low degree
metabolites. The genes involved in several operons in E. coli are correctly
predicted as those of enzymes catalyzing the reactions of these clusters. We
independently identified clusters of reactions whose fluxes are perfectly
correlated. We find that the composition of the latter `functional clusters' is
also largely explained in terms of clusters of low degree metabolites in each
of these organisms. Our findings mean that most metabolic reactions that are
essential can be tagged by one or more low degree metabolites. Those reactions
are essential because they are the only ways of producing or consuming their
respective tagged metabolites. Furthermore, reactions whose fluxes are strongly
correlated can be thought of as `glued together' by these low degree
metabolites.Comment: 12 pages main text with 2 figures and 2 tables. 16 pages of
Supplementary material. Revised version has title changed and contains study
of 3 organisms instead of 1 earlie
Quantum oscillator on complex projective space (Lobachewski space) in constant magnetic field and the issue of generic boundary conditions
We perform a 1-parameter family of self-adjoint extensions characterized by
the parameter . This allows us to get generic boundary conditions for
the quantum oscillator on dimensional complex projective
space() and on its non-compact version i.e., Lobachewski
space() in presence of constant magnetic field. As a result, we
get a family of energy spectrums for the oscillator. In our formulation the
already known result of this oscillator is also belong to the family. We have
also obtained energy spectrum which preserve all the symmetry (full hidden
symmetry and rotational symmetry) of the oscillator. The method of self-adjoint
extensions have been discussed for conic oscillator in presence of constant
magnetic field also.Comment: Accepted in Journal of Physics
Effect of La Doping on Microstructure and Critical Current Density of MgB2
In the present study, La-doped MgB_2 superconductors with different doping
level (Mg1-xLaxB2; x=0.00, 0.01, 0.03 & 0.05) have been synthesized by
solid-state reaction route at ambient pressure. Effect of La doping have been
investigated in relation to microstructural characteristics and superconducting
properties, particularly intragrain critical current density (Jc). The
microstructural characteristics of the as synthesized Mg(La)B2 compounds were
studied employing transmission electron microscopic (TEM) technique. The TEM
investigations reveal inclusion of LaB6 nanoparticles within the MgB2 grains
which provide effective flux pinning centres. The evaluation of intragrain Jc
through magnetic measurements on the fine powdered version of the as
synthesized samples reveal that Jc of the samples change significantly with the
doping level. The optimum result on Jc is obtained for Mg0.97La0.03B2 at 5K,
the Jc reaches ~1.4x107A/cm2 in self field, ~2.1 x 106A/cm2 at 1T, ~2.5 x
105A/cm2 at 2.5T and ~1.8 x 104 A/cm2 at 4.5T. The highest value of intragrain
Jc in Mg0.97La0.03B2 superconductor has been attributed to the inclusion of
LaB6 nanoparticles which are capable of providing effective flux pinning
centres
Virtual Reality
This analysis paper provides a brief survey of the sector of computer game, application domains, technological demand and presently accessible resolution. It additionally presents the background and motivation of virtual surroundings analysis and identifies typical application domains. It additionally surveys current input/output devices of computer game
Study the Effect of Plant Growth Regulators on Seed Germination of Various Tree Species of Rajasthan
This research paper delves into the influence of plant growth regulators (PGRs) on the germination percentage of four distinct plant species, specifically Albizia lebbeck (L.) Benth., Holoptelea integrifolia (Roxb.) Planch., Acacia catechu (L.f.) Willd., and Terminalia bellirica (Gaertn.) Roxb. The study was conducted at Arid Forest Research Institute, Jodhpur, during the summer of 2022. The study employed three PGRs: gibberellic acid (GA3), indole acetic acid (IAA), and indole-3-butyric acid (IBA) at two concentrations of 500 ppm and 1000 ppm. The primary objectives of this study were to evaluate the germination percentage of the four plant species and to ascertain the optimal PGR treatment for seed germination. The results of this research could potentially aid in the development of effective strategies to enhance seed germination and overall plant growth. The study revealed that the impact of PGRs on germination percentage was dependent on the plant species and the concentration of the PGR used. The findings indicated that the use of PGRs at appropriate concentrations could increase the germination percentage of seeds. Of the three PGRs used in the study, GA3 was found to be the most effective at enhancing seed germination for all four plant species, followed by IAA and IBA. Overall, this research has demonstrated that the use of PGRs can significantly improve seed germination percentage and can provide valuable insights into the optimal concentration of PGRs required for the best possible results. The study results could potentially assist in the development of PGR-based strategies to enhance plant growth and productivity, which could have important implications for agricultural and environmental sustainability
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