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Singapore, my country : biography of M. Bala Subramanion
This book tells M Bala Subramanion's story, a second generation Indian who lost his father to the Death Railway, witnessed Subhas Chandra Bose at the Padang and later emerged as not only a senior civil servant but the man behind multiple social interventions, living in a fast evolving Singapore.The histories of the man and his nation remain seamlessly intertwined, each peppered with equal doses of endeavour, ingenuity and a sheer will to survive.
Book
There's Always Work at the Post Office
This book brings to life the important but neglected story of African American postal workers and the critical role they played in the U.S. labor and black freedom movements. Historian Philip Rubio, a former postal worker, integrates civil rights, labor, and left movement histories that too often are written as if they happened separately. Centered on New York City and Washington, D.C., the book chronicles a struggle of national significance through its examination of the post office, a workplace with facilities and unions serving every city and town in the United States.Black postal workers--often college-educated military veterans--fought their way into postal positions and unions and became a critical force for social change. They combined black labor protest and civic traditions to construct a civil rights unionism at the post office. They were a major factor in the 1970 nationwide postal wildcat strike, which resulted in full collective bargaining rights for the major postal unions under the newly established U.S. Postal Service in 1971. In making the fight for equality primary, African American postal workers were influential in shaping today's post office and postal unions.
eBook
Public transport crowdshipping: moving shipments among parcel lockers located at public transport stations
In view of success stories of unicorn startups from the sharing and gig economy such as Airbnb, DiDi, or Uber, it is not surprising that postal service providers try to transfer the sharing idea toward their last-mile delivery services: owners of under-used assets (here private crowdshippers traveling anyway) are connected with users willing to pay for the use of these assets (here postal service providers having to deliver parcels). In this paper, we consider a special form of crowdshipping where public transport users, steered by a smartphone app, pick up parcels from parcel lockers, take these shipments with them on their subway rides, and deposit these parcels into other lockers. Finally, the actual recipients can pick up their shipments from their most convenient parcel lockers, e.g., on their own way back home from work. We formulate the optimization problem that matches crowdshipping demand and supply and determines the routes along lockers and crowdshippers each parcel takes. Specifically, we allow that each parcel is moved by multiple cooperating crowdshippers and solve this problem with different objective functions capturing the individual aims of the main stakeholders: shippers, crowdshippers, recipients, and the platform provider. We evaluate the relationship of these objectives and quantify the efficiency loss of a more restricted matching policy, where only a single crowdshipper can be assigned to each parcel’s complete path between origin and destination. Finally, we also explore the impact of delays and investigate whether specific objectives protect against unforeseen events.
Journal Article
Applying simulation in lean service to enhance the operational system in Indian postal service industry
This paper aims to present an innovative approach to design a Lean Service System in the India Post service industry using the Simulation method to reduce the system’s complexity. Using logic and systematic building blocks, simulation models have been developed from lean service elements using the arena software and verified in Siemens Tecnomatix plant simulation suite. Simulation is used to replicate the real model, guide the future production system, and determine the optimal parameter values. Simulation studies have been divided into two perspectives, “before LS” and “after LS” through Value Stream Mapping (VSM). It has been found that there is a 9.62 percent enhancement in delivering articles per person. A real case of postal service internal operational performance has been taken for the study. This study is the first to combine Value Stream Mapping - Simulation (VSM-Sim) to simulate and optimize the mailing service operations’ operational performance parameters.
Journal Article
Methods to increase response rates to a population-based maternity survey: a comparison of two pilot studies
Background
Surveys are established methods for collecting population data that are unavailable from other sources; however, response rates to surveys are declining. A number of methods have been identified to increase survey returns yet response rates remain low. This paper evaluates the impact of five selected methods on the response rate to pilot surveys, conducted prior to a large-scale National Maternity Survey in England.
Methods
The pilot national maternity surveys were cross-sectional population-based questionnaire surveys of women who were three months postpartum selected at random from birth registrations. Women received a postal questionnaire, which they could complete on paper, online or verbally over the telephone. An initial pilot survey was conducted (pilot 1,
n
= 1000) to which the response rate was lower than expected. Therefore, a further pilot survey was conducted (pilot 2,
n
= 2000) using additional selected methods with the specific aim of increasing the response rate. The additional selected methods used for all women in pilot 2 were: pre-notification, a shorter questionnaire, more personable survey materials, an additional reminder, and inclusion of quick response (QR) codes to enable faster access to the online version of the survey. To assess the impact of the selected methods, response rates to pilot surveys 1 and 2 were compared.
Results
The response rate increased significantly from 28.7% in pilot 1 to 33.1% in pilot 2 (+ 4.4%, 95%CI:0.88–7.83,
p
= 0.02). Analysis of weekly returns according to time from initial and reminder mail-outs suggests that this increase was largely due to the additional reminder. Most respondents completed the paper questionnaire rather than taking part online or over the telephone in both pilot surveys. However, the overall response to the online questionnaire almost doubled from 1.8% in pilot 1 to 3.5% in pilot 2, corresponding to an absolute difference of 1.7% (95%CI:0.45–2.81,
p
= 0.01), suggesting that QR codes might have facilitated online participation.
Conclusions
Declining survey response rates may be ameliorated with the use of selected methods. Further studies should evaluate the effectiveness of each of these methods using randomised controlled trials and identify novel strategies for engaging populations in survey research.
Journal Article
Using an Interval Type-2 Fuzzy AROMAN Decision-Making Method to Improve the Sustainability of the Postal Network in Rural Areas
One of the crucial pillars of each state’s development strategy relates to service provision in rural areas. An adequate scope of these services is a prerequisite for uniform regional progress. Postal operators play a key role in supporting these development policies, by providing postal, financial and transportation services to each citizen in a state, regardless of place of residence. The postal network represents one of the biggest logistics networks worldwide. However, since it is not financially justified to provide services to all citizens, even to those that live in the most remote areas, the question of how to optimize the postal network is always topical. This problem is very complex because the postal units’ existence in rural areas cannot be considered just from an economic standpoint; many other criteria should be considered. The model proposed in this paper can be considered a decision-making tool designed to support policymakers in planning the postal network. First, we identify the criteria that should be considered in decision-making by an extensive literature review. We then apply the FUCOM method to determine the importance of individual criteria. Finally, we propose an Interval Type-2 Fuzzy AROMAN approach to determine which postal unit should be reorganized.
Journal Article
Impact of lean service, workplace environment, and social practices on the operational performance of India post service industry
This paper aims to study the determinants of the Lean Service System (LSS) on the Operational Performance (OP) of India's mail service in the National Sorting Hub (NSH), Mangaluru, Karnataka, the southern part of India. Measuring the OP in mail service is a big challenge in the postal service industry. Hence, we have conducted a survey, and 150 usable data has measured the impact of Lean Service Practices (LSP), Lean Workplace Environment Practices (LWEP), and Lean Social Practices (LSoP) on the OP. The results are analyzed from the partial least square based structural equation modelling (PLS-SEM) with the support of R programming. The analysis shows that there is positive and significant impact of LSP (β = 0.380, p < .05), followed by LWEP (β = 0.281, p < .05), and LSoP (β = 0.266, p < .05) on OP. The practical effect of the findings of LSS are effectively implemented for enhancing the OP of the business. This research addresses the appropriate empirical model to test LSS in India's postal service industry, which is scant in the existing literature. Moreover, this study helps India Post to review its policy so as to sustain the effectiveness of Lean Service (LS) implementation.
Journal Article
A randomized trial found online questionnaires supplemented by postal reminders generated a cost-effective and generalizable sample but don’t forget the reminders
The objective of this study was to compare the response rates, data completeness, and representativeness of survey data produced by online and postal surveys.
A randomized trial nested within a cohort study in Yorkshire, United Kingdom. Participants were randomized to receive either an electronic (online) survey questionnaire with paper reminder (N = 2,982) or paper questionnaire with electronic reminder (N = 2,855).
Response rates were similar for electronic contact and postal contacts (50.9% vs. 49.7%, difference = 1.2%, 95% confidence interval: −1.3% to 3.8%). The characteristics of those responding to the two groups were similar. Participants nevertheless demonstrated an overwhelming preference for postal questionnaires, with the majority responding by post in both groups.
Online survey questionnaire systems need to be supplemented with a postal reminder to achieve acceptable uptake, but doing so provides a similar response rate and case mix when compared to postal questionnaires alone. For large surveys, online survey systems may be cost saving.
Journal Article
Truck Scheduling in the Postal Service Industry
The distribution networks of the postal service industry are organized according to the hub-and-spoke paradigm, so that parcel distribution centers play a crucial role to consolidate the parcel flows to full truckloads. In these terminals, inbound trucks are unloaded at gates, shipments are identified, sorted by the central sortation conveyor system, and loaded into outbound trailers, in which they are moved toward their next destination. In this context, the scheduling of inbound trucks, which assigns a gate and a processing interval to each truck, is an essential operational decision problem. We formalize the resulting optimization problem and provide suited solution procedures. Furthermore, we test the impact of truck scheduling on the sortation performance of the central conveyor system with the help of a comprehensive terminal simulation.
The online appendix is available at
https://doi.org/10.1287/trsc.2016.0722
.
Journal Article
The impact of extreme heat on workplace harassment and discrimination
I study the impact of extreme heat on the incidence of harassment and discrimination using data on Equal Employment Opportunity (EEO) charges brought forward by US Postal Service (USPS) workers. I analyze more than 800,000 EEO charges filed between FYs 2004 and 2019. I find that heat stress experienced on days when maximum temperatures exceed 90 °F increases EEO incidents by roughly 5% relative to days when temperatures are between 60 °F and 70 °F. The uncovered effect is widespread across the USPS and appears to be driven by changes in the number of incidents rather than in their reporting.
Journal Article