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1 – 10 of over 4000Mitchell Scovell, Connar McShane, Anne Swinbourne and Daniel Smith
This paper aims to understand how experience with the fringe effects of a cyclone influences perception of cyclone severity. Understanding how certain types of experience…
Abstract
Purpose
This paper aims to understand how experience with the fringe effects of a cyclone influences perception of cyclone severity. Understanding how certain types of experience influences risk perception should help to clarify why there is an unclear link between experience and risk perception within the existing literature.
Design/methodology/approach
A total of 155 respondents with fringe cyclone experience were recruited to fill in a closed-ended question survey. The survey was designed to assess perceptions of a previous cyclone and future cyclone severity.
Findings
Most respondents who had experienced the fringe effects of a cyclone overestimated the wind speed in their location. Respondents who overestimated previous cyclone wind speed also predicted less damage from future Category 5 cyclones.
Research limitations/implications
This research indicates that overestimating the severity of past cyclones can have a detrimental effect on how people predict damage due to high category cyclones.
Practical implications
The findings suggest that people with fringe cyclone experience need additional information to help reshape their perceptions of cyclone severity.
Originality/value
This paper provides a unique perspective on the relationship between experience and risk perception by demonstrating that experience on the fringe of a cyclone has a negative influence on risk perception.
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Keywords
Oya Icmeli, S. Selcuk Erenguc and Christopher J. Zappe
A survey of project scheduling problems since 1973 limited to workdone specifically in the project scheduling area (although severaltechniques developed for assembly line…
Abstract
A survey of project scheduling problems since 1973 limited to work done specifically in the project scheduling area (although several techniques developed for assembly line balancing and job‐shop scheduling can be applicable to project scheduling): the survey includes the work done on fundamental problems such as the resource‐constrained project scheduling problem (RCPSP); time/cost trade‐off problem (TCTP); and payment scheduling problem (PSP). Also discusses some recent research that integrates RCPSP with either TCTP or PSP, and PSP with TCTP. In spite of their practical relevance, very little work has been done on these combined problems to date. The future of the project scheduling literature appears to be developing in the direction of combining the fundamental problems and developing efficient exact and heuristic methods for the resulting problems.
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Jordon E. Swain, Andrew L. Bond and Daniel R. Smith
This article outlines a personal Journey Line Narrative exercise aimed at enhancing leader authenticity and effectiveness by asking students to “look back” and identify their core…
Abstract
This article outlines a personal Journey Line Narrative exercise aimed at enhancing leader authenticity and effectiveness by asking students to “look back” and identify their core values, as well as the formative experiences that helped solidify those values. The Journey Line Narrative encourages reflection and self-awareness by asking students to answer the question “Who am I?”, to articulate this reflection to a mentor, and to distill this reflection into a coherent essay. This exercise can be useful in courses focused on leader development by helping aspiring leaders develop and communicate their authenticity, core values, and purpose
The great filter and an unfriendly artificial general intelligence might pose existential risks to humanity, but these two risks are anti-correlated. The purpose of this paper is…
Abstract
Purpose
The great filter and an unfriendly artificial general intelligence might pose existential risks to humanity, but these two risks are anti-correlated. The purpose of this paper is to consider the implications of having evidence that mankind is at significant peril from both these risks.
Design/methodology/approach
This paper creates Bayesian models under which one might get evidence for being at risk for two perils when we know that we are at risk for at most one of these perils.
Findings
Humanity should possibly be more optimistic about its long-term survival if we have convincing evidence for believing that both these risks are real than if we have such evidence for thinking that only one of these perils would likely strike us.
Originality/value
Deriving implications of being greatly concerned about both an unfriendly artificial general intelligence and the great filter.
Details
Keywords
Michael Egnoto, Gary Ackerman, Irina Iles, Holly Ann Roberts, Daniel Steven Smith, Brooke Fisher Liu and Brandon Behlendorf
Testing technologies for policing is costly and laborious. Previous research found that police can be reticent about technology adoption. The purpose of this paper is to examine…
Abstract
Purpose
Testing technologies for policing is costly and laborious. Previous research found that police can be reticent about technology adoption. The purpose of this paper is to examine law enforcement adoption of programmatic innovations focused on particular crime types (radiological and nuclear threats).
Design/methodology/approach
First, an expert police panel explored readiness to adopt an advanced technology (personal radiation detectors (PRDs)). A survey was then developed from the panel findings (n=101 sampled from East Coast metropolitan police).
Findings
Results indicated that on-duty device adoption was likely, but not off-duty. In addition, concerns about ease of carrying PRDs, personal health and security issues, and concerns about job performance were raised. Furthermore, findings suggest that police respond negatively to financial incentives, and focus instead on how innovations can contribute to their own safety and that of their immediate families. Additionally, results indicate that false positives are not a significant barrier to adoption, but device training is important.
Practical implications
This work gives insight how to engage officers more meaningfully in technology adoption for benefit of policing in the field.
Originality/value
This work expands previous police adoption literature and advances understanding of the increasing role officers are taking in counter-terrorism efforts in the USA with applications around the world.
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Debadyuti Das and Aditya Singh
The present work seeks to determine the optimal delivery schedule of equipment at a project site in the backdrop of limited storage space, at a minimum cost, and without…
Abstract
Purpose
The present work seeks to determine the optimal delivery schedule of equipment at a project site in the backdrop of limited storage space, at a minimum cost, and without disturbing the overall project schedule. In addition, the optimized delivery schedule helps in minimizing the fluctuating requirements of space at the project site across the entire project lifespan.
Design/methodology/approach
The study is carried out at a Steel plant operating in a constrained space but undergoing a production capacity expansion. The problem motivated us to explore the possibility of postponing the delivery dates of certain equipment closer to the erection dates without compromising on the project schedule. Given the versatility of linear programming models in dealing with such schedule optimization problems, the authors formulated the above problem as a Zero-One Integer Linear Programming problem.
Findings
The model is implemented for all the new equipment arriving for two major units – the Hot Strip Mill (HSM) and the Blast Furnace (BF). It generates an optimized delivery schedule by delaying the delivery of some equipment by a certain number of periods, without compromising the overall project schedule and at a minimum storage cost. The average space utilization increases by 25.85 and 14.79% in HSM and BF units respectively. The fluctuations in space requirements are reduced substantially in both units.
Originality/value
The study shows a timeline in the form of a Gantt chart for the delivery of equipment, storage of equipment across different periods, and the number of periods for which the delivery of certain equipment needs to be postponed. The study uses linearly increasing storage costs with the increase in the number of periods for storage of the equipment in the temporary shed.
Highlights
Determined the optimal delivery schedule of the equipment in a project environment in the backdrop of limited storage space in the project site.
Formulated the above problem as a Zero-One Integer Linear Programming (ILP) problem.
The average space utilization has increased by 25.85 and 14.79% in HSM and BF units respectively.
The optimized delivery schedule helps in reducing the fluctuations in space requirements substantially across the entire lifespan of the project.
The timeline of delivery of equipment, storage of equipment across different periods and periods of postponement of the equipment are shown in the form of a Gantt Chart.
Determined the optimal delivery schedule of the equipment in a project environment in the backdrop of limited storage space in the project site.
Formulated the above problem as a Zero-One Integer Linear Programming (ILP) problem.
The average space utilization has increased by 25.85 and 14.79% in HSM and BF units respectively.
The optimized delivery schedule helps in reducing the fluctuations in space requirements substantially across the entire lifespan of the project.
The timeline of delivery of equipment, storage of equipment across different periods and periods of postponement of the equipment are shown in the form of a Gantt Chart.
Details
Keywords
Luciano Costa Santos, Cláudia Fabiana Gohr and Milton Vieira Junior
The paper aims to present a hands‐on activity for operations management (OM) education that simulates assembly operations common in industrial settings using polyvinyl chloride…
Abstract
Purpose
The paper aims to present a hands‐on activity for operations management (OM) education that simulates assembly operations common in industrial settings using polyvinyl chloride (PVC) threadable fittings utilised in water pipes as interchangeable parts for easy manual assembly.
Design/methodology/approach
The teaching method followed the philosophy of active learning and was applied in an action research approach; the proposed activity was tested and improved during applications in the classroom.
Findings
The applicability of the method was proven during in‐class exercises. The results were confirmed with positive feedback from the students involved in the exercises, which was obtained through a survey conducted after a set of applications.
Research limitations/implications
Although the proposed activity may have several possibilities for application, this paper focuses specifically on teaching the topics of work measurement and assembly line balancing, thus limiting the generalisability of these findings to other OM techniques. Therefore, it is important that the activity is further adapted to teach other OM topics.
Practical implications
The activity performed with pipe fittings represents a practical exercise that contributes to reduction of the gap between theory and practice in OM education. Using simple and low cost materials, the students are involved in creating a real process from a fictional product.
Originality/value
This paper presents an experiential learning exercise applied using an innovative approach, using pipe fittings as interchangeable parts assembled in a production line.
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Linet Özdamar, Gündüz Ulusoy and Mete Bayyigit
Considers the resource‐constrained project scheduling problem where cash inflows and outflows are tied to the occurrence of events. The objective is the maximization of the…
Abstract
Considers the resource‐constrained project scheduling problem where cash inflows and outflows are tied to the occurrence of events. The objective is the maximization of the project net present value (NPV) as well as the minimization of project tardiness in the presence of a project due date. Develops hybrid scheduling rules with both NPV and tardiness considerations to enhance both objectives. Experiments extensively with a set of benchmark problems originally designed for the objective of minimizing the project duration. Demonstrates that thje hybrid rules developed here are superior in performance with respect to both objectives when compared with well known rules which are developed for the two objective of minimizing the project duration. Demonstrates that the hybrid rules developed here are superior in performance with respect to both objectives when compared with well‐known rules which are developed for the two objectives taken individually. Furthermore, the iterative algorithm improves the performance of all tested rules significantly.
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Ministry of Health, Whitehall, S.W.1. 31st July, 1925. SIR, I am directed by the Minister of Health to draw the attention of the Council to the Milk and Dairies (Consolidation…
Abstract
Ministry of Health, Whitehall, S.W.1. 31st July, 1925. SIR, I am directed by the Minister of Health to draw the attention of the Council to the Milk and Dairies (Consolidation) Act, 1915, which will come into operation on the 1st September, 1925. Section 21 (1) of the Act provided that it should come into operation on such date, not being later than the expiration of one year after the termination of the war, as the Local Government Board might by order appoint. Section 1 of the Milk and Dairies (Amendment) Act, 1922, enacted that the 1915 Act, notwithstanding anything contained therein, should not come into operation before the 1st September, 1925. Although it was the evident intention of the 1922 Act that the 1915 Act should come into operation on the date mentioned, the Minister is advised that it is not certain that this is effected automatically by the Act itself. He has therefore deemed it advisable, in order to remove any possible doubt, to make an Order formally appointing the 1st September, 1925, as the date of commencement of the Act.
This study examines whether rules, particular participants, and executive politics in state tax revenue estimation exert measurable influences on forecast error. Fixed-effects…
Abstract
This study examines whether rules, particular participants, and executive politics in state tax revenue estimation exert measurable influences on forecast error. Fixed-effects estimation using data from states’ respective fiscal years 1994 to 2003 indicates that all impact state tax revenue forecast accuracy in varying ways, and results suggest that policy can be crafted to effectively mitigate forecast error. Further examination of the quality of participation in tax revenue forecasting as well as the mechanisms of political involvement in this arena is suggested.