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Article
Publication date: 15 November 2022

Matthew Powers and Brian O'Flynn

Rapid sensitivity analysis and near-optimal decision-making in contested environments are valuable requirements when providing military logistics support. Port of debarkation…

Abstract

Purpose

Rapid sensitivity analysis and near-optimal decision-making in contested environments are valuable requirements when providing military logistics support. Port of debarkation denial motivates maneuver from strategic operational locations, further complicating logistics support. Simulations enable rapid concept design, experiment and testing that meet these complicated logistic support demands. However, simulation model analyses are time consuming as output data complexity grows with simulation input. This paper proposes a methodology that leverages the benefits of simulation-based insight and the computational speed of approximate dynamic programming (ADP).

Design/methodology/approach

This paper describes a simulated contested logistics environment and demonstrates how output data informs the parameters required for the ADP dialect of reinforcement learning (aka Q-learning). Q-learning output includes a near-optimal policy that prescribes decisions for each state modeled in the simulation. This paper's methods conform to DoD simulation modeling practices complemented with AI-enabled decision-making.

Findings

This study demonstrates simulation output data as a means of state–space reduction to mitigate the curse of dimensionality. Furthermore, massive amounts of simulation output data become unwieldy. This work demonstrates how Q-learning parameters reflect simulation inputs so that simulation model behavior can compare to near-optimal policies.

Originality/value

Fast computation is attractive for sensitivity analysis while divorcing evaluation from scenario-based limitations. The United States military is eager to embrace emerging AI analytic techniques to inform decision-making but is hesitant to abandon simulation modeling. This paper proposes Q-learning as an aid to overcome cognitive limitations in a way that satisfies the desire to wield AI-enabled decision-making combined with modeling and simulation.

Details

Journal of Defense Analytics and Logistics, vol. 6 no. 2
Type: Research Article
ISSN: 2399-6439

Keywords

Content available
Article
Publication date: 1 March 2010

William B. Lamb and Hugh Sherman

Those who would establish high-growth businesses (HGBs) in rural settings face significant challenges. We report findings from more than 80 in-depth interviews regarding the…

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Abstract

Those who would establish high-growth businesses (HGBs) in rural settings face significant challenges. We report findings from more than 80 in-depth interviews regarding the obstacles that rural HGBs face and identify approaches for overcoming these obstacles. First, interviews confirm the need for improved access to a full range of financing options to support HGBs across different development stages. Second, HGBs need in-depth, sophisticated technical assistance, which is generally unavailable in rural areas. Finally, cooperation among financial and technical service providers is vital to program success. Based on these findings, a model is proposed for successful development of HGBs in rural areas.

Details

New England Journal of Entrepreneurship, vol. 13 no. 2
Type: Research Article
ISSN: 2574-8904

Content available
Article
Publication date: 1 March 2007

Keramat Poorsoltan

In practice and in theory, as the findings of this research reveal, the Iranian business community is a new and different, nonconforming immigrant group in the United States. This…

1041

Abstract

In practice and in theory, as the findings of this research reveal, the Iranian business community is a new and different, nonconforming immigrant group in the United States. This study explores certain aspects of the Iranian business community in light of a survey done by the author.The article compares and contrasts findings of the survey with those of existing literature that has been written about the business communities of various ethnic groups.The results of this study disagree with the literature in most areas. One difference is that the Iranian business community in the United States does not fit into the general understanding that ethnic groups have economic enclaves and niches. They are dispersed in all 48 contiguous states, and their businesses cover practically any possible line of entrepreneurial activity.These entrepreneurs are highly educated, and 76 percent of them are between 30 and 50 years old.Among them, 84 percent are male, a typical American profile.

Details

New England Journal of Entrepreneurship, vol. 10 no. 2
Type: Research Article
ISSN: 2574-8904

Content available
Article
Publication date: 30 May 2023

Benjamin Leiby and Darryl Ahner

This paper aims to examine how the regional variable in country conflict modeling affects forecast accuracy and identifies a methodology to further improve the predictions.

Abstract

Purpose

This paper aims to examine how the regional variable in country conflict modeling affects forecast accuracy and identifies a methodology to further improve the predictions.

Design/methodology/approach

This paper uses statistical learning methods to both evaluate the quantity of data for clustering countries along with quantifying accuracy according to the number of clusters used.

Findings

This study demonstrates that increasing the number of clusters for modeling improves the ability to predict conflict as long as the models are robust.

Originality/value

This study investigates the quantity of clusters used in conflict modeling, while previous research assumes a specific quantity before modeling.

Details

Journal of Defense Analytics and Logistics, vol. 7 no. 1
Type: Research Article
ISSN: 2399-6439

Keywords

Content available
Article
Publication date: 1 March 2001

Jeff Trailer and Chester Wolford

This article presents examples for improving the effectiveness of business plans by focusing on the logical structure of their composition.

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Abstract

This article presents examples for improving the effectiveness of business plans by focusing on the logical structure of their composition.

Details

New England Journal of Entrepreneurship, vol. 4 no. 1
Type: Research Article
ISSN: 2574-8904

Content available
Article
Publication date: 1 March 1999

Alberto Zanzi and Colette Dumas

This comparative study of American and Italian family-owned firms focuses on two key aspects of family business management: succession and governance. This study also explored the…

Abstract

This comparative study of American and Italian family-owned firms focuses on two key aspects of family business management: succession and governance. This study also explored the impact of generation on these variables.

Details

New England Journal of Entrepreneurship, vol. 2 no. 2
Type: Research Article
ISSN: 2574-8904

Content available
Article
Publication date: 28 January 2020

Hatice Akpinar and Bekir Sahin

The purpose of this study is to fill the gap and apply a fault tree analysis (FTA) in detention lists of Black Sea Region published port state reports from 2005 to 2016. The study…

1302

Abstract

Purpose

The purpose of this study is to fill the gap and apply a fault tree analysis (FTA) in detention lists of Black Sea Region published port state reports from 2005 to 2016. The study analyzes valid records of 2,653 detained ships with 6,374 deficiencies based on a strategic management approach. This paper sets up FTA technique to assess the detention probability of a random ship which calls the Black Sea Region with the help of detention lists published within subject years.

Design/methodology/approach

This paper is not published elsewhere, and it is based on an original work, which figures out detention probability of a regular ship at Black Sea Region port state control from published lists of Black Sea Memorandum of Understanding (MoU). By utilizing these detention lists, a generic fault tree diagram is drawn. Those probabilities could be used strategically with the most seen deficiencies in the region which all could guide the users, rule makers and the controllers of the maritime system.

Findings

FTA has conducted based on the data which was collected from website of BS MoU detention lists that published from 2005 to 2016. Those lists have been published on monthly basis from 2011 to 2016 and on quarterly basis from 2005 to 2010. Proper detention records have been included into the research, whereas some missing records were excluded. Subject lists have been harmonized and rearranged according to Black Sea MoU Detention Codes which was published on October 2017 at Black Sea MoU’s website. According to BS MoU Annual Reports, 58,620 ships were inspected from 2005 to 2016 as seen in Table 1. Those ships were inspected by each member country’s PSOs in the light and guidance of predefined selection criteria of the region. Detention frequency of inspected ships detected as 0.103116 which explains any ship that called any port in the Black Sea Region could be 10% detained after inspected by PSO. Also, each intermediate event-calculated frequency enlightens the probabilities of nonconformities of ships. Although those deficiencies show structural safety and security nonconformities, those probabilities also prove us that management side of the ships are not enough to manage and apply a safety culture. By the light of that, ship owners/managers could see the general nonconformities according to regional records and could manage their fleet and each ship as per those necessities.

Research limitations/implications

In the light of the above analysis, the future research on this subject could be studied on other regions which might enable a benchmark opportunity to users. Also, insurance underwriters have their own reports and publications that could clarify different points of view for merchant mariners and regulators. In this research, FTA is used as a main method to figure out the root causes of the detentions. For future researches, different qualitative and quantitative methods could be used under the direction of subjects.

Practical implications

Detention frequency of inspected ships detected as 0.103116 which explains any ship that called any port in the Black Sea Region could be 10% detained after inspected by PSO. Also, each intermediate event-calculated frequency enlightens the probabilities of nonconformities of ships. Although those deficiencies show structural safety and security nonconformities, those probabilities also prove us that management side of the ships are not enough to manage and apply safety culture. By the light of that, ship owners/managers could see the general nonconformities according to regional records and could manage their fleet and each ship as per those necessities.

Social implications

With the nature of carriage, shipping business carry out its essential economic attendance in world trade system via inclusion in national and international transportation. As a catalyst in international trade, shipping itself enables time, place and economic benefits to users (Bosneagu, Coca and Sorescu, 2015). Social and institutional pressures generate shipping industry as one of the most regulated global industries which creates high complexity. Industry evolved to multi-directional structure ranges from international conventions (IMO and ILO) to “supra-national interferences” (EU directives), to regional guidance (MoUs) to national laws (flag states). Ship operators endeavor to adopt/fit its industry environment where rules are obvious. With adaptation of industrial environment, ship operators are able to create an important core competency.

Originality/value

This study enlightens the most recorded deficiencies and analyzed them with the help of fault three method. These calculated frequencies/probabilities show the most seen nonconformities and the root causes of detentions in the Black Sea Region in which those results will be benefited strategically that enables a holistic point of view that guide the owners/managers, charterers/sellers/shippers, classification societies, marine insurance underwriters, ship investors, third parties, rule makers and the controllers of the system to apply safety culture.

Details

Maritime Business Review, vol. 5 no. 3
Type: Research Article
ISSN: 2397-3757

Keywords

Content available
Article
Publication date: 15 December 2017

Yong Hwa Chia, Ivan CK Tam and Arun Kr Dev

The Maritime Labour Convention (MLC) embodies standards of existing international maritime labour conventions and recommendations, as well as the fundamental principles to be…

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Abstract

Purpose

The Maritime Labour Convention (MLC) embodies standards of existing international maritime labour conventions and recommendations, as well as the fundamental principles to be found in other international labour conventions. The aim of the convention is to address the employment standards of seafarers in the areas of fair wages, contractual terms, working and living conditions, as well as their health and safety on board ships. The purpose of this paper is to provide an in-depth study of MLC Regulation 3.1, specifically on the layout design of the accommodation spaces and possible solutions to meet the new demands as those will certainly affect the crew comfort, health and well-being on board ships.

Design/methodology/approach

The approach used includes a review of pre- and post-MLC conventions and regulations. This is then followed by looking at the impact of MLC Regulation 3.1 on new ship design. Possible solutions for new ship design are then proposed.

Findings

The findings from the paper were as follows: More flexibility in the form of non-mandatory guidelines and substantial equivalence under MLC. Under MLC, only Special Purpose Ship (SPS) is allowed to accommodate four persons in one room. The requirement for increased height and floor spaces would result in increased gross register tons (GT) for post-MLC built vessels. Impact due to post-MLC requirements would be more unfavourable for the design of smaller vessels below 500 GT than of bigger vessels of up to less than 3,000 GT. Possible solutions include applying for exemptions and substantial equivalents with flag states or registering with a non-ratifying flag state.

Originality/value

This paper has been based on a dissertation carried out for the partial fulfilment of a post-graduate degree. It has not been published in any journal.

Details

Maritime Business Review, vol. 2 no. 4
Type: Research Article
ISSN: 2397-3757

Keywords

Content available
Article
Publication date: 1 March 2010

Sherrie Human, Thomas Clark, Charles H. Matthews, Julie Stewart and Candace Gunnarsson

Relatively few comparative studies have examined how perceptions across cultures might converge or diverge regarding careers in general and new venture careers in particular. Our…

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Abstract

Relatively few comparative studies have examined how perceptions across cultures might converge or diverge regarding careers in general and new venture careers in particular. Our research addresses this gap by providing a comparative study of career perceptions among undergraduate business students in three countries with different levels of experience with capitalism: Ukraine, South Korea, and the United States. Results suggest both surprising differences and interesting similarities between undergraduate students in the three countries with regard to how they perceive characteristics associated with entrepreneurial careers. Findings are discussed in the context of distinct differences and commonalities across cultures and implications for future research provided.

Details

New England Journal of Entrepreneurship, vol. 13 no. 1
Type: Research Article
ISSN: 2574-8904

Content available
Article
Publication date: 1 March 1998

Lisa Morin

There are currently more than seventy paint-your-own pottery shops in the United States. Although the concept of such studios is fairly new in New England, they have been in…

Abstract

There are currently more than seventy paint-your-own pottery shops in the United States. Although the concept of such studios is fairly new in New England, they have been in existence on the West Coast for years.

Details

New England Journal of Entrepreneurship, vol. 1 no. 1
Type: Research Article
ISSN: 2574-8904

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