295 research outputs found
Role of Buyer-Supplier Relationship on Buying Firm’s Performance in Chemical Sector of Pakistan
This research paper aims at proving the importance of buyer-supplier relationship for the enhancement of the performance of the customer firm. The six companies that have been focused belong to the listed chemical sector in KSE 100 index. The Buyer-Supplier Relationship (measured through seven factors including Frequency of Communication, etc.) has been taken as independent variable where as buyer’s performance (measured through financial indicators like ROA and ROE) has been taken as dependent one. The data used has been collected through questionnaires as well as from the annual reports of the companies under study. Descriptive statistics, Pearson’s Correlation and Ordinary Least Squares (OLS) method has been used to analyze the data. Results reveal positive as well as negative correlation between some of the factors. The regression results are unrealistic due to the fault in data collected through questionnaire. Also some recommendations have been made to help buyers develop their relationships with the suppliers. Keywords: Buyer-Supplier Relationship, Buyer’s Performance. Chemical Secto
Protecting quantum entanglement from amplitude damping
Quantum entanglement is a critical resource for quantum information and
quantum computation. However, entanglement of a quantum system is subjected to
change due to the interaction with the environment. One typical result of the
interaction is the amplitude damping that usually results in the reduction of
the entanglement. Here we propose a protocol to protect quantum entanglement
from the amplitude damping by applying Hadamard and CNOT gates. As opposed to
some recently studied methods, the scheme presented here does not require weak
measurement in the reversal process, leading to a faster recovery of
entanglement. We propose a possible experimental implementation based on linear
optical system
Overconfidence and Loss Aversion in Investment Decisions: A Study of the Impact of Gender and Age in Pakistani Perspective
This study investigates the impacts of gender and age on two of the behavioral biases i.e. over confidence and loss aversion with reference to Pakistan. We used questionnaire based survey method to collect data from a sample amounting to 391 individuals. Chi-sguare analysis, OLS and correlation analysis have been used to estimate the models under study. The findings revealed men and older investors to be more overconfident whereas women and older investors to be more loss averse. Similarly, the results indicate that those who prefer risk are likely to be more over confident. The limitations include time and geographical constraints as well as unavailability of data. In the add, some recommendations have been made that could help researchers in their future works. Keywords: Behavioral biases, Gender and Overconfidence, Loss Aversion and Behavioral Finance Micro (BFMI)
Multiple lump solutions and their interactions for an integrable nonlinear dispersionless PDE in vector fields
In this article, lump solutions, lump with I-kink, lump with II- kink, periodic, multiwaves, rogue waves and several other interactions such as lump interaction with II-kink, interaction between lump, lump with I-kink and periodic, interaction between lump, lump with II-kink and periodic are derived for Pavlov equation by using appropriate transformations. Additionally, we also present 3-dimensional, 2-dimensional and contour graphs for our solutions
Quantum recoil effects in finite-time disentanglement of two distinguishable atoms
Starting from the requirement of distinguishability of two atoms by their
positions, it is shown that photon recoil has a strong influence on finite-time
disentanglement and in some cases prevents its appearance. At near-field inter
atomic distances well localized atoms, with maximally one atom being initially
excited, may suffer disentanglement at a single finite time or even at a series
of equidistant finite times, depending on their mean inter atomic distance and
their initial electronic preparation.Comment: 13 pages, 1 figure, submitted to Physical Review on august 2
Genome-wide association analyses reveal complex genetic architecture underlying natural variation for flowering time in canola
A comparison of the adomian and homotopy perturbation methods in solving the problem of squeezing flow between two circular plates
The objective of this paper is to compare two methods employed for solving nonlinear problems, namely the Adomian Decomposition Method (ADM) and the Homotopy Perturbation Method (HPM). To this effect we solve the Navier‐Stokes equations for the unsteady flow between two circular plates approaching each other symmetrically. The comparison between HPM and ADM is bench‐marked against a numerical solution. The results show that the ADM is more reliable and efficient than HPM from a computational viewpoint. The ADM requires slightly more computational effort than the HPM, but it yields more accurate results than the HPM.
First published online: 10 Feb 201
Comparison in biodegradable films formulated from two red seaweeds of Karachi coast
In this research a comparative study was made between biodegradable films obtained from two different indigenous red seaweeds collected from Karachi coast. Gracilaria corticata and Melanothamnus afaqhussainii were collected from the Buleji coast of Karachi, Pakistan (24o50’N, 66o48’E). Agar extracted from both the seaweeds was used and incorporated as raw material for the formulation of biodegradable films. Sorbitol was used as plasticizer to increase the tensile strength and elasticity of the films. The results showed that the solubility of M. afaqhussainii was higher than G. corticata. The soil burial test showed that the biodegradability percent of M. afaqhussainii (60%) was higher as compared to G. corticata (40%). The tensile strength and elongation break of G. corticata (9.79±1.21 MPa and 28.72±5.13%) was stronger than the M. afaqhussainii (3.98±1.08 MPa and 16.32±3.80). Results of current study showed that the G. corticata has stronger gelling property as compared to M. afaqhussainii
Selection and adaptation of microalgae to growth in 100% unfiltered coal-fired flue gas
Microalgae have been considered for biological carbon capture and sequestration to offset carbon emissions from fossil fuel combustion. This study shows that mixed biodiverse microalgal communities can be selected for and adapted to tolerate growth in 100% flue gas from an unfiltered coal-fired power plant that contained 11% CO. The high SOx and NOx emissions required slow adaptation of microalgae over many months, with step-wise increases from 10% to 100% flue gas supplementation and phosphate buffering at higher concentrations. After a rapid decline in biodiversity over the first few months, community profiling revealed Desmodesmus spp. as the dominant microalgae. To the authors’ knowledge this work is the first to demonstrate that up 100% unfiltered flue gas from coal-fired power generation can be used for algae cultivation. Implementation of serial passages over a range of photobioreactors may contribute towards the development of microalgal-mediated carbon capture and sequestration processes
Entanglement transfer between bipartite systems
The problem of a controlled transfer of an entanglement initially encoded
into two two-level atoms that are successively sent through two single-mode
cavities is investigated. The atoms and the cavity modes form a four qubit
system and we demonstrate under which conditions the initial entanglement
encoded into the atoms can be completely transferred to other pairs of qubits.
We find that in the case of a nonzero detuning between the atomic transition
frequencies and the cavity mode frequencies, no complete transfer of the
initial entanglement is possible to any of the other pairs of qubits. In the
case of exact resonance and equal coupling strengths of the atoms to the cavity
modes, an initial maximally entangled state of the atoms can be completely
transferred to the cavity modes. The complete transfer of the entanglement is
restricted to the cavity modes only with the transfer to the other pairs being
limited to up to 50%. We have found that the complete transfer of an initial
entanglement to other pairs of qubits may take place if the initial state is
not the maximally entangled state and the atoms couple to the cavity modes with
unequal strengths. Depending on the ratio between the coupling strengths, the
optimal entanglement can be created between the atoms and one of the cavity
modes.Comment: 3 figures. Oral talk presented in CEWQO 18, Madrid 201
- …