Rail transit fare collection: Policy and technology assessment

The impact of fare policies and fare structure on the selection of equipment was investigated, fare collection systems are described, hardware and technology related problems are documented, and the requirements of a fare collection simulation model are outlined. Major findings include: (1) a wide variation in the fare collection systems and equipment, caused primarily by historical precedence; (2) the reliability of AFC equipment used at BART and WMATA discouraged other properties from considering use of similar equipment; (3) existing equipment may not meet the fare collection needs of properties in the near future; (4) the cost of fare collection operation and maintenance is high; and (5) the relatively small market in fare collection equipment discourages new product development by suppliers. Recommendations for fare collection R&D programs include development of new hardware to meet rail transit needs, study of impacts of alternate fare policies increased communication among policymakers, and consensus on fare policy issues

Evaluation of Some Hydrobiological Parameters in River Asan in Morena District

Industrialization, urbanization, population explosion and green revolution have deteriorated the various sources of water. The industrial effluents, sewage and polluted water from other sources when discharged into any stream or river not only cause pollution but drastically disturb the fauna & flora. The same is true for Asan River flowing in Madhya Pradesh. It, therefore, becomes a must to assess water quality of Asan at the downstream site (D) and upstream site (A) throughout its entire length in Morena district. It was since the beginning of 1970's that environmental pollution became a serious problem in India. Because of the rapid increase of population and concentration of factories around the coastal region of Asan. Significant alterations in hydrobiological parameters were observed

Parasitic Protozoans in Some Edible Freshwater Fishes of River Asan, District Morena

In the present thesis, an effort has been made to study the various species of Myxobolus in freshwater fishes. Total 695 fishes belonging to different genera and 8 species are investigated for this purpose. Nine species of Myxobolus have been described. Their incidence, Morphology, and taxonomy are studied and compared. An attempt has been made to study the pathological effects of parasites on different organs viz. skin, muscles and gills. Effect of parasites on the growth of fishes is also noticed. Infection in muscles is caused by Myxobolus cultus, Myxobolus dujardini, Myxobolus cycloid, Myxobolus oviforme, Myxobolus cognati, Myxobolus ellipsoideus, Myxobolus cerebralis. The infection in Muscles is reported in Channa striatus, Clarias batrachus, Heteropneustes fossilis, Labeo rohita, Catla catla, Cirrhinus mrigala and Wallago attu. Gills are infected by Myxobolus oviforme in Clarias batrachus. Myxosporidian infection is noticed in gill lamellae only. Skin and muscles are infected by Myxobolus oviforme in Clarias batrachus and the infection is reported in melanophores. Calcification is reported in gills only while necrosis is only noticed in the skin

Parasitic Protozoans in Some Edible Freshwater Fishes of River Asan, District Morena

In the present thesis, an effort has been made to study the various species of Myxobolus in freshwater fishes. Total 695 fishes belonging to different genera and 8 species are investigated for this purpose. Nine species of Myxobolus have been described. Their incidence, Morphology, and taxonomy are studied and compared. An attempt has been made to study the pathological effects of parasites on different organs viz. skin, muscles and gills. Effect of parasites on the growth of fishes is also noticed. Infection in muscles is caused by Myxobolus cultus, Myxobolus dujardini, Myxobolus cycloid, Myxobolus oviforme, Myxobolus cognati, Myxobolus ellipsoideus, Myxobolus cerebralis. The infection in Muscles is reported in Channa striatus, Clarias batrachus, Heteropneustes fossilis, Labeo rohita, Catla catla, Cirrhinus mrigala and Wallago attu. Gills are infected by Myxobolus oviforme in Clarias batrachus. Myxosporidian infection is noticed in gill lamellae only. Skin and muscles are infected by Myxobolus oviforme in Clarias batrachus and the infection is reported in melanophores. Calcification is reported in gills only while necrosis is only noticed in the skin

Constraints on the phase γ\gamma and new physics from B→KπB\to K\pi Decays

Recent results from CLEO on $B\to K\pi$ indicate that the phase $\gamma$ may be substantially different from that obtained from other fit to the KM matrix elements in the Standard Model. We show that $\gamma$ extracted using $B\to K\pi, \pi\pi$ is sensitive to new physics occurring at loop level. It provides a powerful method to probe new physics in electroweak penguin interactions. Using effects due to anomalous gauge couplings as an example, we show that within the allowed ranges for these couplings information about $\gamma$ obtained from $B\to K \pi, \pi\pi$ can be very different from the Standard Model prediction.Comment: Revised version with analysis done using new data from CLEO. RevTex, 11 Pages with two figure

Effects of R-parity violation on direct CP violation in B decays and extraction of γ\gamma

In the standard model, direct CP-violating asymmetries for $B^\pm \to \pi^\pm K$ are roughly 2% based on perturbative calculation. Rescattering effects might enhance it to at most (20-25)%. We show that lepton-number-violating couplings in supersymmetric models without R-parity are capable of inducing as large as 100% CP asymmetry in this channel. Such effects drastically modify the allowed range of the CKM parameter $\gamma$ arising from the combinations of the observed charged and neutral B decays in the $\pi K$ modes. With a multichannel analysis in B decays, one can either discover this exciting new physics, or significantly improve the existing constraints on it.Comment: Latex, 5 pages; minor changes, to appear in Phys Rev Let

Examination of the Resonance Contributions to Dileptonic Rare B-Decays

We analyse the long-distance contribution to $B\to X_s\ell^+\ell^-$ differential decay rate when the momentum dependence of $\psi$ and $\psi'$-$\gamma$ conversion strength is taken into account. The results indicate that the resonance to nonresonance interference in the dilepton invariant mass distribution is substantially reduced.Comment: 10 pages, Latex, one figure (included

Nondestructive Evaluation of Weld seam Failures in Tubes and Other Structures for Thermal, Wind and Nuclear Power Applications

The paper gives inspection and maintenance practices being followed in an important Tube manufacturing plant (Bundy India Limited, Baroda) where the first author (R.M Joshi) worked. Advances in the eddy current technique of on line surface and subsurface inspection along with some unconventional modern methods and their scope of appli-cation have been highlighted. The inspection techniques contribute to improved customer confidence

Texture of fermion mass matrices in partially unified theories

We investigate the texture of fermion mass matrices in theories with partial unification (for example $SU(2)_L\times SU(2)_R\times SU(4)_c$) at a scale $\sim 10^{12}$ GeV. Starting with the low energy values of the masses and the mixing angles, we find only two viable textures with atmost four texture zeros. One of these corresponds to a somewhat modified Fritzsch textures. A theoretical derivataion of these textures leads to new interesting relations among the masses and the mixing angles.Comment: 10 pages(Latex

Intermediate scale as a source of lepton flavor violation in SUSY SO(10)

In supersymmetric SO(10) grand unified models, we examine the lepton flavor violation process $\mu \rightarrow e\gamma$ from having the SU(2)$_R\times$U(1)$_{B-L}$ gauge symmetry broken at an intermediate scale $M_I$ below the SO(10) grand unification scale $M_G$. Even in the case that supersymmetry is broken by universal soft terms introduced at the scale $M_G$, we find significant rates for $\mu\rightarrow e\gamma$ with $M_I \sim 10^{12}$ GeV or less. These rates are further enhanced if the universal soft terms appear at a scale greater than $M_G$.Comment: 12 pages (Latex), 3 PS Figures (uuencoded, epsf.tex), small addition to discussion in the text, as to appear in Phys. Rev. D Rapid Communication