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3893 items in total found

Journal Articles | 2018

Stochastic modeling of unloading and loading operations at a container terminal using automated lifting vehicles

Debjit Roy and Rene De Koster

European Journal of Operational Research

With the growing worldwide trade, container terminals have grown in number and size. To increase operational efficiency, many new terminals are now automated. The key focus is on improving seaside processes, where a distinction can be made between single quay crane operations (all quay cranes are either loading or unloading containers) and overlapping quay crane operations (some quay cranes are loading while others are unloading containers). Using a network of open and semi-open queues, we develop a new integrated stochastic model for analyzing the performance of overlapping loading and unloading operations that capture the complex stochastic interactions among quayside, vehicle, and stackside processes. The analytical model is solved using an iterative algorithm based on the parametric decomposition approximation approach. The system performance is tested at varying container traffic levels. We find that the percent absolute errors in throughput times compared to simulation are less than 10% for all cases. Using these integrated models, we are able to generate design insights and also rapidly analyze what-if scenarios. For example, we show that the best yard layout configurations for single (either loading or unloading) operations and the best for overlapping (both loading and unloading) operations largely overlap. The best configurations have relatively few stack blocks and many rows per block. The model is generic and amenable to obtain other design and operational performance insights.

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Journal Articles | 2018

An extensive evaluation of CONWIP-card controlled and scheduled start time based production system designs

Debjit Roy and Vasudha Ravikumaran

Journal of Manufacturing Systems

Order release policies such as a card-controlled CONWIP policy aim to improve system responsiveness and minimize system-wide inventory levels. It is not clear if order release policies (without card control) can be equally effective under certain settings of the production system design parameters. In this research, we study the performance of alternate order release (material control policies) such as CONWIP and scheduled start time policy under a variety of design parameter settings such as number of stations, station service time characteristics, availability of raw material, and the location of the bottleneck station using queuing network models. Using an exhaustive numerical study, we observe that throughput times in CONWIP systems are about 2–50% less compared to open control systems; however, for a balanced system, the Deterministic scheduled start time policy performs equally well for a large set of production system designs. We further identify that the number of stations and the location of the bottleneck station affect the choice of the order release policy. Additionally, we also analyze the system for a variety of demand inter-arrival times and check its effect on the expected number of backlogs and system-wide expected waiting times.

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Journal Articles | 2018

Minimum wages in India: Current status and future prospects

Biju Varkkey and Rupa Korde

Policy in Focus

Journal Articles | 2018

Intuitionistic fuzzy logit model of discrete choice

Manish Aggarwal, Madasu Hanmandlu, Mark T. Keane, and Kanad K. Biswas

IEEE Transactions on Emerging Topics in Computational Intelligence

In the real-world multicriteria decision making, the evaluations of the various criteria are often vague (or not crisp). The existing choice models are difficult to apply in such situations. In this paper, we introduce an intuitionistic fuzzy variant of the multinomial logit model, which helps us to suggest a decision-maker's likely choices with vague evaluations. The applicability of the proposed model is shown through a real multicriteria decision-making application.

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Journal Articles | 2018

Turning over a golden leaf? Global liquidity and emerging market central bank's demand for gold after the financial crisis

Balagopal Gopalakrishnan and Sanket Mohapatra

Journal of International Financial Markets, Institutions and Money

The quantity of gold reserves held by central banks in emerging markets and developing economies (EMDEs) has risen sharply in the years following the global financial crisis of 2008. EMDE central banks’ gold holdings rose in both absolute terms and as a share of GDP across the developing regions and in most of the EMDE countries, suggesting a pervasive phenomenon. Using a dynamic panel data model, we find that expansion of central bank balance sheets in the advanced economies and increase in global liquidity are robustly related to the post-crisis increase in EMDE gold reserves, after controlling for domestic factors and changes in the global risk environment. This finding is robust to different model specifications, inclusion of additional covariates, and alternative estimation methods. We argue that quantitative easing undertaken by central banks in the advanced economies resulted in a search for alternative safe assets such as gold, which may explain the continued accumulation of EMDE gold reserves even after the peak of the financial crisis.

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Journal Articles | 2018

Disparity in the wages of agricultural labourers in India: An interval-valued data analysis

B.S.Yashavanth and Arnab Kumar Laha

Indian Journal of Agricultural Sciences

This study explores the interval-valued data analysis techniques to witness the spatial disparity in the wage rates of farm labourers in India. Farm labourers constitute more than half of the total workforce engaged in Indian agriculture. Also, farmers' expenses towards labour charges account for more than 50 per cent of the total variable cost of production for most crops.Using the time series data on the nominal farm wage rates paid at different agriculturally important states, the interval-valued series are built. The inflation-adjusted real wage rates are found and both nominal and real wage rate data are used to find the average range of the farm wage rates over the agricultural years for a decade. Using the time series analysis techniques, viz. autoregressive integrated moving average-artificial neural network (ARIMA-ANN) hybrid model and vector autoregressive moving average (VARMA) model, the interval-valued data on nominal wage rates are modelled and the best model for forecasting is identified using forecast evaluation methods. The results established the presence of spatial disparity and the forecasts indicated that this disparity is not going to narrow down in future unless some policy intervention takes place. © 2018 Indian Council of Agricultural Research. All rights reserved.

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Journal Articles | 2018

Stewardship value of income statement classification: An empirical examination

Avinash Arya and Neerav Nagar

Journal of Accounting, Auditing & Finance

This study investigates the use of earnings components in setting CEO compensation and explores how persistence and controllability affect it. The results indicate that compensation committees do accord differential treatment to earnings components based on their persistence and controllability. Among above the line items, income from continuing items, the most persistent item, also receives the most weight, followed by special items, which have smaller persistence. Furthermore, these weights vary across firms in different stages of life cycle in a manner that mirrors variations in their informativeness and persistence. Weights on special items also exhibit contextual sensitivity based on their type and frequency. Among below the line items, discontinued items, which are at least under partial control of the CEO, receive a positive weight. Except extraordinary items, which are largely uncontrollable, we find no evidence that CEOs are shielded from the income-decreasing effects of any of the earnings components.

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Journal Articles | 2018

Fairness in franchisor-franchisee relationship: An integrative perspective

Ateeque Shaikh, Dheeraj Sharma, Akshaya Vijayalakshmi, and Rama Shankar Yadav

Journal of Business & Industrial Marketing

Purpose

This paper aims to elucidate and extend the concept of power and fairness in the context of franchisor–franchisee relationship.

Design/methodology/approach

On the basis of Dul and Hak’s (2007) recommendations, the conceptual model is developed from closely related domains (e.g. channel relationship) using pertinent theories. On the basis of this comprehensive analysis, new propositions about fairness in a franchisee–franchisor context are drawn. The primary purpose of this research is to conceptually and theoretically further the understanding of antecedents and consequences of fairness in a franchisor–franchisee relationship context by proffering a framework. Finally, this study examines the concept of fairness of its antecedents and moderators that have received scant attention in the context of franchising research.

Findings

This study contends that non-coercive power is perceived fairly. Also, coercive power that is legitimate is perceived fairly. However, coercive power that is illegitimate can be detrimental to relationships between franchisee and franchisor. Furthermore, a franchisee who perceives the relationship to be fair is likely to place more trust in relationship, is more satisfied with relationship and is less likely to be opportunistic. Finally, the study contends that these relationship outcomes are dependent on the franchisee’s personality traits.

Research limitations/implications

One major limitation of this study is that the propositions have not been empirically tested. However, this paper cites several business cases that have been used to support the propositions proffered in the study. Our conceptual model supported by previous theoretical findings and industry cases suggests that it is important to focus on social dimensions along with economic costs of a franchisor–franchisee relationship. Future researchers may empirically examine the relationships posited in this study by using the primary industry data.

Originality/value

This paper takes a comprehensive view of various social constructs affecting a franchisor–franchisee relationship. It also highlights the role of individual personality factors in a franchisor–franchisee relationship, extends prior work on relational dimensions from channels to the franchising context and provides managerial conclusions.

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Journal Articles | 2018

Foot-march: Large-scale mobilization for a public cause or a tool for fanning political ambition.

Astha Agarwalla, Ishu Gupta, and Ankur Sarin

Journal of Public Affairs

We present the case of an awareness campaign, strategically crafted by a local student political leader, based on a national level policy for urban poor and marginalized, in the city of Ahmedabad in India. The campaign, designed in the form of a foot-march, was aimed at mobilizing the urban poor, but with a clear ambition of gaining visibility for political mileage. This study reinforces that the mediation role taken up by local leaders transcends the traditional policymaking, in democracies with blurred boundaries between the state and citizens. Further, in local governance structures, with weak participatory spaces for the poor, foot-marches have the potential to become an extended invited participatory space.

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Journal Articles | 2018

Changes in the executive bonus payment patterns in India between 2008-16: Some evidences

Biju Varkkey, Rupa Korde, and Sunny Wadhwaniya

Compensation and Benefits Review

This article provides a brief overview of the trends in bonus payment to executives in India. Using data from the voluntary web based survey of Paycheck India, which is a part of WageIndicator Foundation, this article analyzes the trends in five types of bonuses, viz., performance, end-of-year, festival, profit-share and others, from 2008 to 2016, across public and private sectors and four types of industries, viz., manufacturing and construction; trade, transport and hospitality; commercial services; and public sector, health care and education. The results suggest that performance bonus is the most popular type of bonus, while profit-share is the least popular. However, from 2008 to 2016, the shares of all types of bonuses in both sectors (Public and Private) and all industries have been declining, and in most of the large industries and firms, bonuses in terms of cash payments are now restricted to fewer executives.

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