Taxi Licensing Follow-Up Study: Summary of Main Results

This paper presents the findings of a survey of taxi licensing policy in England and Wales in mid 1989. The survey acts partly as a follow-up study to earlier work reported earlier in this series (Toner 1989 WP 273) and partly as a vehicle for the assessment of a number of additional issues. These issues form the key to an understanding of the consequences to both consumers of taxi services and road users more generally of the decision to either retain or remove restrictions on entry to the hackney carriage trade. The results presented are purely corss-sectional in nature and do not include a treatment of the important issues of price and service effects. These topics will form the basis of further papers (see, for example Pells, (1990) WP 290 for initial findings on values of waiting time and price elasticities in the hackney market)

Taxi Licensing Follow-Up Study: Summary of Main Results

This paper presents the findings of a survey of taxi licensing policy in England and Wales in mid 1989. The survey acts partly as a follow-up study to earlier work reported earlier in this series (Toner 1989 WP 273) and partly as a vehicle for the assessment of a number of additional issues. These issues form the key to an understanding of the consequences to both consumers of taxi services and road users more generally of the decision to either retain or remove restrictions on entry to the hackney carriage trade. The results presented are purely corss-sectional in nature and do not include a treatment of the important issues of price and service effects. These topics will form the basis of further papers (see, for example Pells, (1990) WP 290 for initial findings on values of waiting time and price elasticities in the hackney market)

Air investigation of some alternative methods to agrobacterium and protoplast transformation for introducing exogenous genes into plants, based on the use of pollen as a vector

Some of the problems involved in the search for alternative plant transformation vectors have been examined. In particular the use of pregerminated pollen as a direct transformation vector has been investigated. It has been shown that the protocols of Hess et al (1985) and De Vet et al (1985) are not easy to repeat with the levels of success claimed by the authors, and that these methods are unlikely to find general applicability to plant transformation in unmodified form. It has not been shown conclusively that these methods do not work, although the true levels of transformation may be considerably lower than those claimed. Some of the basic information required for application of the methods of de la Pefia et al (1987) to Petunia has been elucidated

Mass dependence of the hairpin vertex in quenched QCD

The pseudoscalar ``hairpin'' vertex (i.e. quark-disconnected vertex) plays a key role in quenched chiral perturbation theory. Direct calculations using lattice simulations find that it has a significant dependence on quark mass. I show that this mass dependence can be used to determine the quenched Gasser-Leutwyler constant L5. This complements the calculation of L5 using the mass dependence of the axial decay constant of the pion. In an appendix, I discuss power counting for quenched chiral perturbation theory and describe the particular scheme used in this paper.Comment: 12 pages, 4 figures. Version to appear in Phys. Rev. D. Central result unchanged, but explanation of calculation improved and minor errors corrected. New appendix discusses power counting schemes in quenched chiral perturbation theor

Increasing access to genebank information.

Poster presented at TDWG Annual Conference, Suza, Bratislava (Slovakia) 16-22 Sep 200

Alleviation of experimental allergic encephalomyelitis in C57BL/6 mice by Soy Daidzein

Experimental allergic encephalomyelitis (EAE) is considered as the murine model of multiple sclerosis. Daidzein a phytostrogenic compound of soy is known to impose immunomodulatory and antioxidative effects. We conducted this study to assess the potential protective and therapeutic effects of daidzein on allergic encephalomyelitis. C57BL/6 mice were induced with allergic encephalomyelitis using myelin oligodendrocyte glycoprotein (35-55) and received daidzein or dimethyl sulfoxide as the vehicle control. To assess the protective effect of daidzein, the mice were administered with 20 mg/kg of daidzein from 21 days prior to 21 days post EAE induction on a daily basis. To evaluate the therapeutic effect of daidzein, mice were fed with 300 mg/kg daidzein after the appearance of the first clinical signs for 10 days. One day after the last gavage, the mice were sacrificed. Spleen and brain were removed for further histological and immunological analysis. Feeding mice with low dose of daidzein prior to disease induction did not affect disease severity. However, treating with high dose of daidzein after the onset of the disease reduced interferon-3 and interleukin-12 secretion, enhanced interleukin-10 production, suppressed lymphocyte proliferation, and decreased cytotoxicity as judged by lactate dehydrogenase release. In conclusion, daidzein reduced the extent of demyelination and disease severity. Chronic oral therapy with low dose of daidzein did not prevent experimental autoimmune encephalomyelitis. However, high doses of daidzein could prohibit disease exacerbation. © Summer 2014, Iran J Allergy Asthma Immunol. All rights reserved

Modelling and identification of non-linear deterministic systems in the delta-domain

This paper provides a formulation for using the delta-operator in the modelling of non-linear systems. It is shown that a unique representation of a deterministic non-linear auto-regressive with exogenous input (NARX) model can be obtained for polynomial basis functions using the delta-operator and expressions are derived to convert between the shift- and delta- domain. A delta-NARX model is applied to the identification of a test problem (a Van-der-Pol oscillator): a comparison is made with the standard shift operator non-linear model and it is demonstrated that the delta-domain approach improves the numerical properties of structure detection, leads to a parsimonious description and provides a model that is closely linked to the continuous-time non-linear system in terms of both parameters and structure

Stress concentration analysis of plate with circular hole : elasticity theory and finite element comparison

Stress concentration factor for a plate with circular free stress hole subjected to a uniform far field tension in single was investigated in this study. The stress concentration level along X and Y axis was determined by the elasticity theoritical method. Finite element analysis using LISA free source software was validate by the elasticity theoritical results. It was found that finite element analysis stress concentration factor results shows similar pattern as theoretical but higher near of the hole. Plain strain analysis with Quad 8 element type showed better results compared to plain stress with Quad 4 element type and plain strain with Quad 4 element type