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Article

Anil Kr. Aggarwal and Amit Kumar

In this paper, the objective is to perform mathematical modeling to optimize the steady-state availability of a multi-state repairable crushing system of a sugar plant…

Abstract

Purpose

In this paper, the objective is to perform mathematical modeling to optimize the steady-state availability of a multi-state repairable crushing system of a sugar plant using the evolutionary algorithm of Particle Swarm Optimization (PSO). The system availability is optimized by evaluating the optimal values of failure and repair rate parameters concerned with the subsystem of the system.

Design/methodology/approach

Mathematical modeling of the multi-state repairable system is performed to develop the first-order differential equations based on the exponential distribution of the failure and repair rates. These differential equations are recursively solved to obtain the availability under normalizing conditions. The availability of the system is optimized by using the PSO algorithm. The results obtained by PSO are validated by using the Genetic Algorithm (GA).

Findings

The availability analysis of the system concludes that the cane preparation (F1) is critical of the crushing system and the optimized availability of the system using PSO is achieved as high as 87.12%.

Originality/value

A crushing system of the sugar plant is evaluated as it is the main system of the sugar plant. The maintenance data associated with failure and repair rate parameters were analyzed with the help of maintenance records/logbook and by conducting personal meetings with maintenance executives of the plant. The results obtained in the paper helped them to plan maintenance strategies accordingly to get optimal system availability.

Details

International Journal of Quality & Reliability Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0265-671X

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Article

Anil Kr. Aggarwal

This paper deals with the performance optimization and sensitivity analysis for crystallization system of a sugar plant.

Abstract

Purpose

This paper deals with the performance optimization and sensitivity analysis for crystallization system of a sugar plant.

Design/methodology/approach

Crystallization system comprises of five subsystems, namely crystallizer, centrifugal pump and sugar grader. The Chapman–Kolmogorov differential equations are derived from the transition diagram of the crystallization system using mnemonic rule. These equations are solved to compute reliability and steady state availability by putting the appropriate combinations of failure and repair rates using normalizing and initial boundary conditions. The performance optimization is carried out by varying number of generations, population size, crossover and mutation probabilities. Finally, sensitivity analysis is performed to analyze the effect of change in failure rates of each subsystem on availability, mean time to failure (MTBF) and mean time to repair (MTTR).

Findings

The highest performance observed is 96.95% at crossover probability of 0.3 and sugar grader subsystem comes out to be the most critical and sensitive subsystem.

Originality/value

The findings of the paper highlights the optimum value of performance level at failure and repair rates for subsystems and also helps identify the most sensitive subsystem. These findings are highly beneficial for the maintenance personnel of the plant to plan the maintenance strategies accordingly.

Details

International Journal of Quality & Reliability Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0265-671X

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Article

Anil Aggarwal, Sanjeev Kumar and Vikram Singh

The purpose of this paper is to propose a method to compute RAMD indices to measure and improve the performance of skim milk powder production system of a dairy plant…

Abstract

Purpose

The purpose of this paper is to propose a method to compute RAMD indices to measure and improve the performance of skim milk powder production system of a dairy plant under real working conditions.

Design/methodology/approach

The present work is carried out by developing performance model based on Markov birth-death process. The skim milk powder production system consists of six units. The first order governing differential equations are derived using the mnemonic rule and further solved to calculate RAMD indices i.e. reliability, availability, maintainability, dependability, MTBF, MTTR and dependability ratio for each subsystem of the system.

Findings

The subsystem SS1 comprising of chiller and cream separator is the most critical from maintenance point of view, as the reliability, availability, maintainability, dependability, MTBF and dependability ratio indices are low as compared to those of other subsystems of skim milk powder production system of the dairy plant.

Originality/value

The RAMD indices of the present work is very useful for finding the critical subsystem and its effect on the performance of the system working under real working conditions. Further, based on findings the maintenance priorities for various subsystems can be decided.

Details

International Journal of Quality & Reliability Management, vol. 32 no. 2
Type: Research Article
ISSN: 0265-671X

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Article

Surendran Arumugam, Ashok K.R., Suren N. Kulshreshtha., Isaac Vellangany and Ramu Govindasamy

This paper aims to explore the impact of climate change on yields and yield variances in major rainfed crops and measure possible changes in yields under projected climate…

Abstract

Purpose

This paper aims to explore the impact of climate change on yields and yield variances in major rainfed crops and measure possible changes in yields under projected climate changes in different agro-climatic zones of Tamil Nadu, India. Although many empirical studies report the influence of climate change on crop yield, only few address the effect on yield variances. Even in such cases, the reported yield variances were obtained through simulation studies rather than from actual observations. In this context, the present study analyzes the impact of climate change on crops yield and yield variance using the observed yields.

Design/methodology/approach

The Just-Pope yield function (1978) is used to analyze the impact of climate change on mean yield and variance. The estimated coefficient from Just-Pope yield function and the projected climatic data for the year 2030 are incorporated to capture the projected changes in crop yield and variances.

Findings

By the year 2030, the yield of pulses is estimated to decline in all the zones (Northeast, Northwest, Western, Cauvery delta, South and Southern zones), with significant declines in the Northeast zone (6.07 per cent), Cauvery delta zone (3.55 per cent) and South zone (3.54 per cent). Sorghum yield may suffer more in Western zone (2.63 per cent), Southern zone (1.92 per cent) and Northeast zone (1.62 per cent). Moreover, the yield of spiked millet is more likely to decrease in the Southern zone (1.39 per cent), Northeast zone (1.21 per cent) and Cauvery delta zone (0.24 per cent), and the yield of cotton may also decline in the Northeast zone (12.99 per cent), Northwest zone (8.05 per cent) and Western zone (2.10 per cent) of Tamil Nadu, India.

Originality/value

The study recommends introducing appropriate crop insurance policies to address possible financial losses to the farmers. Prioritizing area-specific stress-tolerant crop varieties without complementing yield would sustain crops cultivation further.

Details

International Journal of Climate Change Strategies and Management, vol. 7 no. 4
Type: Research Article
ISSN: 1756-8692

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Article

Courtney J. Linn

The term “prepaid card” refers to the pre‐payment of value process, i.e. pay now and extract value later, and describes most of the prepaid/stored value products available…

Abstract

Purpose

The term “prepaid card” refers to the pre‐payment of value process, i.e. pay now and extract value later, and describes most of the prepaid/stored value products available today. These cards have largely supplanted paper gift certificates and travelers checks, and are used as alternatives for traditional paper‐based transactions such as payroll payments, cross‐border remittances, and government assistance or welfare benefit programs. However, the same attributes that make open‐system prepaid cards attractive to legitimate customers make them attractive to money launderers. The purpose of this paper is to make the case for subjecting certain prepaid card products (but not all) to Report of International Transportation of Currency or Monetary Instruments (CMIR) requirements.

Design/methodology/approach

Addresses how the US law‐enforcement agencies might reconstruct the CMIR enforcement regime to address the unique challenges that prepaid card products present.

Findings

The money laundering threat posed by these products is not immediate, but it is not conjectural either. US law‐enforcement agencies (and perhaps ultimately the courts) will be required to address the fourth amendment and privacy issues that may arise when a customs officer “searches” a prepaid card by swiping it and ascertaining the value of the funds associated with that card.

Originality/value

The paper is of value by showing that problem issues can be surmounted, provided the enforcement regime is narrowly targeted to include only those prepaid card products that bear the closest resemblance to currency, and provided the funds associated with those products are maintained in pooled accounts.

Details

Journal of Money Laundering Control, vol. 11 no. 2
Type: Research Article
ISSN: 1368-5201

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Book part

David Javakhadze, Stephen P. Ferris and Gregory Noronha

Purpose – The question of whether the corporate governance practices of firms in diverse countries are converging to those of U.S. firms, and the extent of convergence or…

Abstract

Purpose – The question of whether the corporate governance practices of firms in diverse countries are converging to those of U.S. firms, and the extent of convergence or divergence, is examined.

Design/methodology/approach – Company level governance measures of board structure and organization, firm audit attributes, antitakeover defenses, and compensation design attributes of international firms are compared with those of U.S. firms.

Findings – We find that the evidence for convergence is more mixed than previously believed, with firms in some nations converging, others essentially static, and a number diverging from U.S. practices. We further determine that country factors such as measures of national economic freedom, increased shareholder rights, and impartial judiciaries help to explain convergence. Greater participation by banks in the national economy is associated with greater divergence from U.S. governance standards. Firm characteristics which are suggestive of a future need for external equity encourage convergence while those which capture the use of leverage or the ability to service additional debt are correlated with greater divergence.

Research limitations/implications – This study suggests that inquiry into whether convergence is occurring might be the wrong question to ask. Rather, our findings suggest that the research focus should be shifted toward an inquiry of what specific areas of governance are converging and in what countries or regions.

Originality/value – This study helps to describe what constitutes effective corporate governance design for firms worldwide. It provides managers with insights on how governance mechanisms can be tailored to reflect local practices and laws.

Details

Advances in Financial Economics
Type: Book
ISBN: 978-1-78052-788-8

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Book part

Raj Aggarwal and Sijing Zong

There continues to be much interest in the impact of internal funds on the level of corporate investment activity. While some studies provide evidence that investment…

Abstract

There continues to be much interest in the impact of internal funds on the level of corporate investment activity. While some studies provide evidence that investment decisions of firms that are financially constrained are more sensitive to the availability of internal funds than those of less constrained firms, other studies show the opposite, i.e. investment decisions of the most credit-worthy firms are most sensitive to internal funds availability. This paper tests these opposing propositions for U.S. firms using data for a longer and more recent period than in prior studies. The results support the latter view, i.e. investments at financially constrained firms are less sensitive to internal cash flows than in financially less constrained firms. Regardless, investments levels are found to be positively related to internal cash flows for all types of firms and for all periods examined indicating a pecking order in financing (firms prefer first using internal funds and only then go to external funds).

Details

Innovations in Investments and Corporate Finance
Type: Book
ISBN: 978-0-76230-897-2

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Book part

Meenakshi Tomar and Priya Grover

Catering business is one of the most prominent and sought-after business investment in Dehradun, given the number of people who have a busy lifestyle. This fact gets more…

Abstract

Catering business is one of the most prominent and sought-after business investment in Dehradun, given the number of people who have a busy lifestyle. This fact gets more influential as Shugan Group is a catering company that serves the Dehradun market, a valley in the foothills of Shivalik Mountain Range in the state of Uttarakhand. Dehradun enjoys the benefit of being the Capital of Uttarakhand. The catering companies offer a lot of employment while promising delicious food to the stakeholders. Many individuals rely on this sector through food trucks, small shops or through full-fledged catering service providing companies. The group offers innovative and interesting food options for Doonites through their catering services including a lot of regional food options. Traditionally, the catering services in the town comprises handful options to deliver in the form of just food items. The catering services now involve a lot of service elements also including serving of the dishes, ambience and all inclusive of personnel factors. Many individuals assume that mess food is everyday kind of boring food. This assumption definitely holds true throughout the student community who are the major benefactors of the catering services as Dehradun is an education hub in the country. The new food offerings therefore face a lot of change as some of the ingredients definitely are the everyday incorporated ones. In the past couple of years, the catering services concept had gained acceptance for investment because of rise in demand for variety to be provisioned in the offerings as students hold diverse demographical differences. A lot of significance has been given to the likeness of various food options. Shugan Group wishes to inject a new life into the student catering market, leveraging the culinary skills of their handpicked chefs to develop creative new catering options. The advanced skills of chefs, industry insight of the group and an already existing market opportunity will allow the group to showcase its potential. Shugan Group is a start-up company. Marketing is critical to its success and future profitability. It offers creative gourmet for mess catering for a wide range of events and everyday eating options. The basic market need is high quality and creative food options. Having worked in the industry for the past few years and witnessing the dynamic environment including rise in disposable incomes, rise in consumer awareness, consumer’s keenness to eat new delicacies every day and desire to purchase quality food, the group has invested a lot in understanding what the consumers want. The performance of the group has been moderately incremental. After holding qualitative wisdom on the requirements of the market, Shugan Group is currently in the speculative stage in terms of being a caterer. The group wishes to reasonably understand the option that it should consciously adopt in terms of being modest about thinking only of financial benefit, with reasonable expansion every year only for the sake of being financially viable or build a strong brand and start getting people to increase word of mouth thereby bringing organic growth.

Details

Start-up Marketing Strategies in India
Type: Book
ISBN: 978-1-78756-755-9

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Article

Raj Aggarwal, Victor Petrovic, John K. Ryans and Sijing Zong

Based on fifteen years of data on the annual Academy of International Business (AIB) best dissertation Farmer Award finalists, we find that these dissertations were done…

Abstract

Based on fifteen years of data on the annual Academy of International Business (AIB) best dissertation Farmer Award finalists, we find that these dissertations were done at a range of North American universities. Interestingly, dissertation topics differed from the topics covered in the three top IB journals with five‐sixths of the topics in management, organization, economics, or finance and two‐thirds set in a single country or region (U.S., Japan, North America, and Western Europe). Survey research is the most common methodology but analysis of secondary data is growing. As expected, the finalists are on average an extraordinarily prolific group.

Details

Multinational Business Review, vol. 16 no. 1
Type: Research Article
ISSN: 1525-383X

Keywords

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Article

Neelu Puri, Anil Gupta, Arun K. Aggarwal and Vipin Kaushal

Outpatient departments (OPDs) need to monitor the quality of care and patient satisfaction for continuous quality improvement. Additionally, there is a need for an…

Abstract

Purpose

Outpatient departments (OPDs) need to monitor the quality of care and patient satisfaction for continuous quality improvement. Additionally, there is a need for an increase in focused literature on patient satisfaction and quality of health care at a tertiary care level. The purpose of this paper is to attempt to fulfil this need.

Design/methodology/approach

A cross‐sectional hospital‐based study among OPD patients was undertaken, where investigators conducted interviews with 120 patients at entry (registration), 120 patients at the OPD clinic (60 doctor‐patient interactions and 60 exit interviews), and a further 120 patients at investigation facilities. Patient satisfaction, client convenience facilities, prescription quality, doctor‐patient interaction and other quality elements as described in the study were given score of 0 or 1.

Findings

At exit, 52 (86.6 percent) patients were satisfied with the OPD care. The mean total quality score was 80.9 percent of the total scores. It was above 90 percent of the total score for patient convenience facilities and for doctor‐patient interaction, 76 percent for the prescription quality of the doctors and 43.3 percent for signage display. The mean score for patient‐doctor interaction was found to be significantly lower (3.6/5) among dissatisfied patients compared to the satisfied patients (4.7/5). Satisfied patients reported a significantly higher consultation time (12.4 minutes) with a doctor compared to dissatisfied patients (8.5 minutes) (p=0.04).

Research limitations/implications

Not using a Likert scale to measure patient satisfaction could be considered a limitation. However, the authors also arrived at similar conclusions with their tools as with the use of Likert scales in other studies. Furthermore, findings are limited to medicine and surgery general OPDs in a tertiary care setting. Any interpretation beyond this frame may be done with caution.

Practical implications

Hospitals should encourage good patient‐doctor interaction as it has emerged as the key factor associated with patient satisfaction.

Social implications

Quality improvements in public sector health institutes can lead to better utilization of health care by the poor and compromised sections of society and can lead to a reduction in the inequity associated with health care.

Originality/value

This paper fulfils the need to evaluate quality of hospital care in public sector hospitals at the tertiary care level. The methods and tools used are simple and extensive enough to capture information at multiple service points.

Details

International Journal of Health Care Quality Assurance, vol. 25 no. 8
Type: Research Article
ISSN: 0952-6862

Keywords

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