546 research outputs found
SOCIAL CONTRACTS, MARKETS AND EFFICIENCY -- GROUNDWATER IRRIGATION IN NORTH INDIA
This paper uses primary data to analyze the institutions and informal markets that govern groundwater allocation in the principal sugarcane belt of North India. In contrast to earlier literature, we find that the observed water trades result in efficient water allocation across farms. We interpret this and other stylized facts in terms of a simple bargaining model with limited inter-player transfers. Poor functioning of the power sector leads to reduced pumping and a water supply constraint. Simulations show that power supply reform can significantly increase farm yields, be financed out of the increased farm profits, and provide an instrument to use for attaining intertemporal efficiency in water allocation.water markets, market structure, water production function.
Effect of shape anisotropy on transport in a 2-dimensional computational model: Numerical simulations showing experimental features observed in biomembranes
We propose a 2-d computational model-system comprising a mixture of spheres
and the objects of some other shapes, interacting via the Lennard-Jones
potential. We propose a reliable and efficient numerical algorithm to obtain
void statistics. The void distribution, in turn, determines the selective
permeability across the system and bears a remarkable similarity with features
reported in certain biological experiments.Comment: 1 tex file, 2 sty files and 5 figures. To appear in Proc. of StatPhys
conference held in Calcutta, Physica A 199
The Three-Point Correlation Function of Luminous Red Galaxies in the Sloan Digital Sky Survey
We present measurements of the redshift-space three-point correlation
function of 50,967 Luminous Red Galaxies (LRGs) from Data Release 3 (DR3) of
the Sloan Digital Sky Survey (SDSS). We have studied the shape dependence of
the reduced three-point correlation function (Qz(s,q,theta)) on three different
scales, s=4, 7 and 10 h-1 Mpc, and over the range of 1 < q < 3 and 0 < theta <
180. On small scales (s=4 h-1 Mpc), Qz is nearly constant, with little change
as a function of q and theta. However, there is evidence for a shallow U-shaped
behaviour (with theta) which is expected from theoretical modeling of Qz . On
larger scales (s=7 and 10 h-1 Mpc), the U-shaped anisotropy in Qz (with theta)
is more clearly detected. We compare this shape-dependence in Qz(s,q,theta)
with that seen in mock galaxy catalogues which were generated by populating the
dark matter halos in large N-body simulations with mock galaxies using various
Halo Occupation Distributions (HOD). We find that the combination of the
observed number density of LRGs, the (redshift-space) two-point correlation
function and Qz provides a strong constraint on the allowed HOD parameters
(M_min, M_1, alpha) and breaks key degeneracies between these parameters. For
example, our observed Qz disfavors mock catalogues that overpopulate massive
dark matter halos with many LRG satellites. We also estimate the linear bias of
LRGs to be b=1.87+/-0.07 in excellent agreement with other measurements.Comment: 14 pages. Accepted for publication to the MNRAS. Data accompanying
paper can be found at http://www.dsg.port.ac.uk/~nicholb/3pt/kulkarni
Study of Behavior & Strengthening of Beam-Column Joint
The beam column joint is the crucial zone in a reinforced concrete moment resisting frame. It is subjected to large forces during severe ground shaking and its behavior has a significant influence on the response of the structure. One of the most important factors affecting the successful strengthening technique of structures is the selection of the strengthening material. The need to lower the cost of maintenance, repair and strengthening techniques, while extending the service life of the structures, has resulted in new systems, processes, or products to save money and time. The objective of this paper is to study and gathering information about the beam-column joint, its structural behavior under seismic conditions, forces acting, types, factors those influences the designing criteria, bond and transverse reinforcement requirements and effective rehabilitation schemes for reinforced concrete beam-column joints thus providing a contribution to a more reliable evaluation of the seismic vulnerability of Reinforced Concrete buildings. Different fiber-wrap rehabilitation schemes are apply to the joint panel with the objective of upgrading the shear strength of the joint. In order to obtain local and global ductility, a series of structural details are required in the seismic design, generally absent or inadequate in the existing RC buildings designed without seismic rules. A reliable evaluation of the seismic performance is particularly needed on these buildings, as a fundamental tool in order to select type, technique, extent and urgency of the strengthening intervention. Many are the factors influencing the structural performances of RC buildings, among them an important role is carried on by the ultimate capacity of the beam-column joints. Some authors performed experimental investigations both on reduced and real scale beam-column sub assemblages to better understand their behavior, also for the development and calibration of software models to be used in non-linear analysis of framed RC structures
Motivating bureaucrats through social recognition: External validity - A tale of two states
This is the final version. Available on open access from Elsevier via the DOI in this recordBureaucratic performance is a crucial determinant of economic growth, but little
real-world evidence exists on how to improve it, especially in resource-constrained
settings. We conducted a field experiment of a social recognition intervention to
improve record keeping in health facilities in two Nigerian states, replicating the
intervention – implemented by a single organization – on bureaucrats performing
identical tasks. Social recognition improved performance in one state but had no
effect in the other, highlighting both the potential benefits and also the sometimeslimited generalizability of behavioral interventions. Furthermore, differences in
facility-level observables did not explain cross-state differences in impacts,
suggesting that it may often be difficult to predict external validity
Correlative study of diabetic retinopathy in type 2 diabetes mellitus with haemoglobin A1c, duration of diabetes and modifiable risk factors: smoking, alcohol and BMI in adult population attending a tertiary care hospital
Background: Diabetes is a disease, which if not controlled, affects every cell of the body from head to toe. No wonder it is often referred to as the “SILENT KILLER”. So through our study, we aim to study the correlation between (haemoglobin A1c) HbA1c levels, duration of diabetes and modifiable risk factors with diabetic retinopathy (DR) in patients of type 2 diabetes mellitus.Methods: This study was conducted in 100 patients (200 eyes) who were diagnosed cases of type 2 diabetes mellitus. A detailed history of the duration of diabetes, alcohol intake and smoking and HbA1c levels was taken. Complete ocular examination was done. BMI was also calculated.Results: 2/3rd of the eyes with grade 3 DR were of>10 years duration while 2/3rd of the eyes with grade 2 DR were of 5-10 years duration. Of the eyes with grade 3 DR, all the patients had HbA1c of more than 8. Significant p value shows strong correlation between DR and obesity. No significant correlation of DR was found with alcohol and smoking.Conclusions: The findings in our study endorse the view that duration and HbA1c are important risk factors for occurrence and severity of DR and therefore a regular follow up and good glycemic control is highly essential for the prevention of occurrence and progression of DR. Strong correlation between BMI and DR suggest that lifestyle changes play a pivotal role
Bidirectional Communication With EPABX for Hotel Management Software (HMS) using Handshaking Protocol
The Hotel management system software bi-directionally connects to EPABX through handshaking protocol. The EPABX is named as NEOS. Earlier we were using long strings to get connected to EPABX which was very time consuming as well as tedious task and experts were required. For the reason HMS is introduce which will give all facilities to user at single click without the guidance of experts. The facilities such as check in/out, dialing right, alarm, temporary check-in/out and billing are provided to the user [1].The Proposed system comprise of 5 modules i.e. serial com driver, interpreter, application, GUI and database, which will help for the communication between HMS and EPABX. System is compatible which makes the work flexible, easy and reflex. Rest of the paper is divided into: Introduction, Related work, proposed model, Features of HMS, Flow of system, Research methodology, Advantage, Application, Conclusion and future work
DOI: 10.17762/ijritcc2321-8169.15021
Use of a folding model and in situ spectroscopic techniques for rational formulation development and stability testing of Monoclonal antibody therapeutics
Aggregation is a critical issue that hampers the development of monoclonal antibody therapeutics (Mabs). Traditionally, aggregation is considered a process in which native forms of proteins are transformed into an unstable highly associated form through an intermediate formation step. Here we describe the unfolding of an anti CD40 antibody using a folding model based on Lumry-Eyring nucleated polymerization (LENP) model. This model captures several experimental features of the thermal unfolding of this protein as studied by common in situ biophysical techniques such as circular dichroism, fluorescence spectroscopy and turbidity measurements. According to this model, the unfolding and aggregation of the anti CD40 antibody is determined by several distinct steps that include conformational change(s) to generate aggregation prone states, reversible oligomer formation, nucleation and growth as well as their kinetics and the formation of higher order assemblies/aggregates. Furthermore, the loss of monomer is controlled by both thermodynamic (equilibrium unfolding) and kinetic determinants of the unfolding process. This approach captures both of these rate-limiting steps. It can be concluded that this approach is sensitive to formulation conditions such as protein concentration, changes in buffer conditions, and temperature stress. The potential use of this approach in formulation development and stability testing of Mabs is discussed
Clinical and public health implications of increasing notifications of LEE-negative Shiga toxin-producing Escherichia coli in England, 2014–2022
Introduction. Shiga toxin-producing Escherichia coli (STEC) belong to a diverse group of gastrointestinal pathogens. The pathogenic potential of STEC is enhanced by the presence of the pathogenicity island called the Locus of Enterocyte Effacement (LEE), including the intimin encoding gene eae.
Gap statement. STEC serotypes O128:H2 (Clonal Complex [CC]25), O91:H14 (CC33), and O146:H21 (CC442) are consistently in the top five STEC serotypes isolated from patients reporting gastrointestinal symptoms in England. However, they are eae/LEE-negative and perceived to be a low risk to public health, and we know little about their microbiology and epidemiology.
Aim. We analysed clinical outcomes and genome sequencing data linked to patients infected with LEE-negative STEC belonging to CC25 (O128:H2, O21:H2), CC33 (O91:H14) and, and CC442 (O146:H21, O174:H21) in England to assess the risk to public health.
Results. There was an almost ten-fold increase between 2014 and 2022 in the detection of all STEC belonging to CC25, CC33 and CC442 (2014 n=38, 2022 n=336), and a total of 1417 cases. There was a higher proportion of female cases (55–70 %) and more adults than children, with patients aged between 20–40 and >70 most at risk across the different serotypes. Symptoms were consistent across the three dominant serotypes O91:H14 (CC33), O146:H21 (CC442) and O128:H2 (CC25) (diarrhoea >75 %; bloody diarrhoea 25–32 %; abdominal pain 64–72 %; nausea 37–45 %; vomiting 10–24 %; and fever 27–30 %). Phylogenetic analyses revealed multiple events of acquisition and loss of different stx-encoding prophage. Additional putative virulence genes were identified including iha, agn43 and subA.
Conclusions. Continued monitoring and surveillance of LEE-negative STEC infections is essential due to the increasing burden of infectious intestinal disease, and the risk that highly pathogenic strains may emerge following acquisition of the Shiga toxin subtypes associated with the most severe clinical outcomes
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