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1 – 10 of over 5000After the closing of four of the five historically Black college and university (HBCU)–based library and information science (LIS) graduate programs (leaving only that of North…
Abstract
Purpose
After the closing of four of the five historically Black college and university (HBCU)–based library and information science (LIS) graduate programs (leaving only that of North Carolina Central University), there is a need to revitalize HBCU-LIS degree program pathways to increase racial diversity in LIS education.
Design/methodology/approach
This mixed-methods study entails survey and interview research with HBCU librarians. The researchers explored participants’ professional experiences and perspectives on creating partnerships between HBCU institutions and LIS graduate programs.
Findings
Participants demonstrated substantial experience, expressed high levels of job satisfaction, viewed pipeline programs favorably and believed that LIS can be strengthened through the inclusion of HBCU educational practices and students.
Practical implications
This study provides recommendations and a model for forging culturally competent and reciprocal HBCU–LIS degree program partnerships.
Social implications
Community-led knowledge of HBCUs can disrupt rescue and deficiency narratives of these institutions. Such prejudices are detrimental to HBCU-LIS degree program partnerships.
Originality/value
Past HBCU-LIS degree program pipeline partnerships did not culminate in research or published best practices. This paper presents literature-derived and community-sourced guidelines along with a model for future initiatives.
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Abdulhakim Adeoye Shittu, Fuat Kara, Ahmed Aliyu and Obinna Unaeze
The purpose of this paper is to mainly review the state-of-the-art developments in the field of hydrodynamics of offshore pipelines, identifying the key tools for analysis of…
Abstract
Purpose
The purpose of this paper is to mainly review the state-of-the-art developments in the field of hydrodynamics of offshore pipelines, identifying the key tools for analysis of pipeline free spans, their applications, their qualifying characteristics and capabilities and limitations.
Design/methodology/approach
These different analytical, numerical and semi-empirical tools available for predicting such hydrodynamic loads and their effects include VIVANA, PIPESIN, VIVSIM, SIMULATOR, FATFREE, amongst others. Inherent in these models are current effects, wave effects and/ or pipe–soil interactions.
Findings
Amongst these models, the most attention was given to the new VIVANA model because this model take into account the vortex-induced effects with respect to free-spanning pipelines (which have dominant effect in the span analysis in deep water) better than other semi-empirical models (such as Shear 7). Recent improvements in VIVANA include its ability to have arbitrary variation in speed and direction of current, as well as the ability for calculation of pure IL and combined IL-CF response. Improvements in fatigue assessments at free spans, i.e. pipe–soil interaction have been achieved through the combined frequency domain and non-linear time domain analysis methodology adopted. Semi-empirical models are still the de facto currently used in the design of free-spanning pipelines. However, there is need for further research on free-span hydrodynamic coefficients and on how in-line and cross-flow vibrations interact. Again, there is still the challenge due to VIV complexity in fully understanding the fluid structure interaction problem, as there is no consolidated procedure for its analysis. It has been observed that there is large scatter between the different codes adopted in the prediction of fatigue damage, as there lacks full-scale test data devoted to determination/validation of the coefficients used in the semi-empirical models. A case study of the preliminary design of a typical 48 in. pipeline has been presented in this study to demonstrate the use of the free-span analysis tool, DNV RP F105. Excel spreadsheet has been applied in the execution of formulas.
Originality/value
This review paper is the first of its kind to study the state-of-the-art development in pipeline free-span analysis models and demonstrate the use of analysis tool, DNV for MAFSL calculation. Hence, information obtained from this paper would be invaluable in assisting designers both in the industry and academia.
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Martin Christopher, Denis R. Towill, James Aitken and Paul Childerhouse
In the twenty‐first century business scenario, most organisations supply a range of products to multiple markets, so participate in several often quite different supply chains…
Abstract
Purpose
In the twenty‐first century business scenario, most organisations supply a range of products to multiple markets, so participate in several often quite different supply chains. Just as the linear chain is a simplification of a supply network, the single channel is a simplification of the true complexity many organisations face. When all products are pushed down a single channel, they are paced by the slowest and customers are charged an average price resulting in many being underserved. Manifestly, for most businesses “one size fits all” is not a viable option in delivery pipeline design and operation. This paper aims to address these issues.
Design/methodology/approach
Traditionally, the requisite number of delivery pipelines operated by a business is determined by “hunch”, as is the range of products flowing down each channel to the marketplace. The information technology (IT) revolution, which in turn has spawned the “analytic corporation” enables pipeline selection and product matching to be placed on a more formal footing. In order to enable the tailoring of value stream pipelines to markets five classification variables are proposed. These are duration of product life cycle (D), delivery window (W), annual volume (or value) (V1), product variety (V2) and demand variability (V3).
Findings
Through the use of case studies drawn from real‐world situations, the authors are able to highlight the practical value of using appropriate taxonomies to identify appropriate supply chain design strategies. A framework for the implementation of a scheme for value stream classification is proposed.
Practical implications
The proposed analysis, design, and implementation methodology is summarised in flow diagram format. Emphasis is placed on the formation of a “natural group” task force to execute this programme. Production, sales, logistics, and marketing are all essential “players” therein.
Originality/value
It is established that the DWV3 classification system is suitable for framing pipeline performance improvement programmes. By exploiting the “analytic corporation” IT capability, the system has a dynamic role in determination of channel switching as products progress through their individual life cycle phases.
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Successful performance and execution of construction projects depend highly on a good project control system capable of tracking and reporting project status on a desired time…
Abstract
Purpose
Successful performance and execution of construction projects depend highly on a good project control system capable of tracking and reporting project status on a desired time interval. The purpose of this paper is to propose such a control system by integrating spreadsheet and Visual Basic for Application to produce a customized tracking system for Pipeline Relocation Programs under Engineering, Procurement and Construction Management (EPCM) contracts.
Design/methodology/approach
The project status reporting system (PSRS) proposed here was developed to produce a single page summary report that would include scope information, financial status, descriptive status updates and top-level task schedules. This information is retrieved from various sources and transformed further utilizing specific formulas and algorithm needed to compute the budget and schedule status of the pipe relocation project. A practical case study is used to demonstrate its unique application.
Findings
The system has successfully integrated project finance and schedule information into a central control hub. Financial and schedule performance of a project is tracked and monitored by the PSRS automatically.
Originality/value
The proposed system utilizes the powerful computing capability of MS Excel and the user-friendly VBA programming tool to customize the reporting needs of a project and program environment. The proposed system, whose functionality has been validated by the intended users, tries to achieve a balance between simplicity, accuracy and effectiveness for the flow of information at a much lower cost compared to the other readily available project control software.
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The paper proposes to present the effect of the high voltage transmission lines on the metallic pipelines by calculating the induced voltage due to mutual inductance between the…
Abstract
Purpose
The paper proposes to present the effect of the high voltage transmission lines on the metallic pipelines by calculating the induced voltage due to mutual inductance between the two circuits especially in short circuit conditions of high voltage overhead transmission lines.
Design/methodology/approach
The electro magnetic transient program (EMTP) is used to simulate the high voltage transmission lines in normal case and in different faulty case conditions. A software is built on MATLAB program (M‐file) to study the effects of various parameters on the magnitude of the induced voltage such as: separation distance between the high voltage transmission line and the metallic pipeline (horizontal distance), different cases of short circuits and normal operation case, the screening factor, and the soil resistivity.
Findings
The three‐phase to ground fault gives the least induced voltage, and phase to ground fault case is the most serious case. The induced voltage decreases with increasing the soil resistivity until 400 Ωm and after this, the induced voltage in the metallic pipeline increases with increasing the soil resistivity for all phase fault types.
Research limitations/implications
It does not deal with all types of interference such as capacitive interference.
Practical implications
This technique helps to know the electrical influence exerted by power line on a pipeline. So it can prevent the pipeline from posing a shock hazard rather than corrosion.
Originality/value
This paper presents the effect of the high voltage transmission lines on the metallic pipelines by calculating the induced voltage due to mutual inductance between the two circuits especially in short circuit conditions of high voltage overhead transmission lines.
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Michael L. Tidwell and Ellis S. Logan
The purpose of this paper is to understand demographic group (race, first-generation college graduate, gender, age) differences among perceived family and faculty social and…
Abstract
Purpose
The purpose of this paper is to understand demographic group (race, first-generation college graduate, gender, age) differences among perceived family and faculty social and family financial support within the US graduate school admissions pipeline in the social sciences.
Design/methodology/approach
Using data from a cross-sectional convenience sample survey (N = 99), this paper looks at ordinal social support variables (faculty member support, family social support and family financial support) by demographic groups. This paper uses a Mann–Whitney U test to compare first-generation status, race and gender and a Kruskal–Wallis H test to compare age groups.
Findings
This paper finds that applicants over 27 years old had significantly less faculty support in the graduate admissions pipeline compared to other age groups; differences in faculty support across race were marginally significant (p = 0.057). Regarding family social support, this paper finds first-generation applicants, male applicants and applicants over 27 years old report lower levels of support. Finally, this paper finds first-generation applicants and applicants over 27 years old report lower levels of familial financial support.
Originality/value
Previous literature on graduate admissions – published in this journal (Pieper and Krsmanovic, 2022) and others – does not consider experiences up to and before applicants hit the “submit” button on graduate applicants, which the authors term the graduate admissions pipeline. Instead, most previous literatures focus on faculty committees and validity of required application materials. Thus, this study begins to answer Posselt and Grodsky’s (2017) call to develop an understanding of applicant experiences and support within the graduate admissions pipeline.
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The existing method of pipeline health monitoring, which requires an entire pipeline to be inspected periodically, is both time‐wasting and expensive. A risk‐based model that…
Abstract
The existing method of pipeline health monitoring, which requires an entire pipeline to be inspected periodically, is both time‐wasting and expensive. A risk‐based model that reduces the amount of time spent on inspection has been presented. This model not only reduces the cost of maintaining petroleum pipelines, but also suggests efficient design and operation philosophy, construction methodology and logical insurance plans. The risk‐based model uses Analytic Hierarchy Process (AHP), a multiple attribute decision‐making technique, to identify the factors that influence failure on specific segments and analyzes their effects by determining probability of risk factors. The severity of failure is determined through consequence analysis. From this, the effect of a failure caused by each risk factor can be established in terms of cost, and the cumulative effect of failure is determined through probability analysis. The technique does not totally eliminate subjectivity, but it is an improvement over the existing inspection method.
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Makarand Mody, Jochen Wirtz, Kevin Kam Fung So, Helen HaeEun Chun and Stephanie Q. Liu
This article examines the new phenomenon of the convergence of platform and pipeline business models. It examines the potential synergies and challenges for platforms to add…
Abstract
Purpose
This article examines the new phenomenon of the convergence of platform and pipeline business models. It examines the potential synergies and challenges for platforms to add pipeline components and vice versa for pipeline businesses.
Design/methodology/approach
This paper uses a conceptual approach that synthesizes and integrates the literature from service, hospitality, and strategy, and supplements them with two illustrative mini-case studies.
Findings
While the extant literature typically focuses on the dichotomy between incumbent pipeline businesses that create value by controlling a linear series of activities and network effects-driven platforms, we differentiate between two types of platform business models (i.e. platforms with asset control and platforms with peer-provided assets). Further, we identify three common pathways of convergence; that is, pipelines moving towards (1) platforms with asset control and (2) those with peer-provided assets, and (3) platforms with peer-provided assets adopting defining business characteristics of pipelines. Furthermore, we contrast key characteristics of the three business models and examine potential synergies and challenges for business model convergence. Our findings suggest that convergence from pipelines to platforms with asset control seems to be a natural extension that offers many potential synergies and relatively minor challenges. In contrast, convergence from pipelines to platforms with peer-provided assets is likely to encounter more serious challenges and few synergies. Finally, the synergies and challenges of convergence from platforms with peer-provided assets to pipelines seem to be in between the other two in terms of synergies and challenges.
Practical implications
This article helps managers think through key considerations regarding potential synergies to develop and challenges to mitigate for embarking on convergence strategies between pipeline and platform business models.
Originality/value
This article is the first in the service, business model and strategy literature to identify, define, and conceptualize business model convergence between platforms with asset control, those with peer-provided assets and pipeline businesses. It is also the first to examine potential synergies and challenges these different paths of business model convergence may entail.
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