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Article
Publication date: 20 April 2010

M.B. Edem

This paper aims to examine the trend of resource development at the University of Calabar Library, using gift items received from 2005 to 2009.

1344

Abstract

Purpose

This paper aims to examine the trend of resource development at the University of Calabar Library, using gift items received from 2005 to 2009.

Design/methodology/approach

The study adopts a descriptive research design based on survey. Relevant documents, including gift and donation files, acquisition records and library accession registers, were examined and analysed to provide answers to questions relating to study objectives.

Findings

The usefulness of gifts to university library resource development is underscored by the quality and currency of the 2,462 volumes of materials received during the study period. Furthermore, the impact that collaborative donor efforts could make towards supporting university library resource development in the information age is highlighted. Associated problems included deficiency in subject coverage, foreign language materials, irregular giving patterns as well as an increasing tendency towards electronic resources acquisition where manual procedures are available.

Practical implications

Acquisition librarians should intensify efforts at soliciting for and directing corporate giving endeavours towards providing for infrastructural support required for university library development in Nigeria. The deficiency in subject coverage highlighted in the study can be addressed if donor agencies are encouraged to adopt relevant library profiles or assign grants to core areas of university academic programs. There is also need for the inclusion or revision of gift statements in collection development policies.

Originality/value

The paper highlights strategies for tackling the challenges of resource acquisition.

Details

Collection Building, vol. 29 no. 2
Type: Research Article
ISSN: 0160-4953

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Article
Publication date: 1 June 2015

Ngozi Blessing Ukachi

The purpose of this paper is to determine the relationship existing between undergraduate students’ information literacy skills and their use of electronic resources (ERs) located…

1723

Abstract

Purpose

The purpose of this paper is to determine the relationship existing between undergraduate students’ information literacy skills and their use of electronic resources (ERs) located in university libraries in Nigeria.

Design/methodology/approach

The descriptive design was adopted for the research questions, while the correlational design was adopted for the hypothesis. The purposive sampling technique was also adopted in selecting 12 university libraries which the preliminary study had revealed that they have Internet access and also subscribe to ERs in the south-west geopolitical zone in Nigeria. Questionnaire and oral interview were used for data collection. The population size consists of all the 36,116 library-registered undergraduate students in the 12 universities, while the sample size is 1,806 (5 per cent of the population) and the 12 librarians heading the ERs sections of the libraries.

Findings

The findings revealed that ERs are not adequately utilized, undergraduate students do not possess adequate information literacy skills necessary for optimal utilization of the libraries’ ERs and strong positive correlation between level of undergraduate students’ information literacy skill and their use of ERs provided in the library.

Practical implications

This paper provides practical insights into the impact of possessing inadequate information literacy skills on the use of ERs.

Originality/value

This paper is the first to relate undergraduate students’ information literacy skills and their use of libraries’ ERs in south-western zone of Nigeria.

Details

The Electronic Library, vol. 33 no. 3
Type: Research Article
ISSN: 0264-0473

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Article
Publication date: 10 August 2012

Stella Anasi and Hussaini Ali

The purpose of this paper is to examine the barriers to effective resource sharing among academic libraries in Nigeria.

1452

Abstract

Purpose

The purpose of this paper is to examine the barriers to effective resource sharing among academic libraries in Nigeria.

Design/methodology/approach

Professional librarians from six randomly selected federal university libraries representing the six geopolitical zones in Nigeria were surveyed using a descriptive survey research design. Questionnaires were sent to 124 librarians; 85 were returned and found to be usable, for a response rate of 68.5 per cent.

Findings

The study revealed that the prospect for resource sharing among university libraries in Nigeria is high. However, factors that hinder effective resource sharing include inadequate funding, a dearth of skilled librarians, power outages, an absence of web‐accessible OPACs, uneven development of libraries, and slow progress of library automation. It is recommended that each university library have a specific annual budget allocation for ICT development and maintenance and for training of librarians to pilot resource sharing projects.

Originality/value

This paper presents resource‐sharing challenges facing academic libraries in Nigeria. It encourages information professionals to embark on capacity building for effective resource sharing. This paper was prepared for the 12th Interlending and Document Supply Conference, held in September 2011.

Details

Interlending & Document Supply, vol. 40 no. 3
Type: Research Article
ISSN: 0264-1615

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Article
Publication date: 10 December 2021

Omorodion Okuonghae and Edwin Iroroeavwo Achugbue

The continuous advancement in technology has disrupted practices in many sectors, including education. Thus, this study aims to examine digital librarianship practice and open…

602

Abstract

Purpose

The continuous advancement in technology has disrupted practices in many sectors, including education. Thus, this study aims to examine digital librarianship practice and open access technology use for sustainable development in Nigeria.

Design/methodology/approach

The survey type of descriptive research design was adopted in this study while the population of the study comprised librarians in universities in Delta State. A total of 38 randomly selected librarians from four universities in Delta State were used for this study, and the data collected were analysed using descriptive statistics.

Findings

This study revealed that the level of digital librarianship practice in university libraries in Delta State for sustainable development is low; just as social media tools, open source integrated library systems and Google Cloud Platforms are the most commonly used open access technologies in the libraries. Furthermore, this study showed that perennial factors such as poor funding of education, inadequate quality educational infrastructure, mismanagement of education fund among others are hindrance to sustainable development in the country’s educational sector.

Research limitations/implications

This study is limited in its use of only one state (out of 36 states and the Federal Capital Territory, Abuja) in Nigeria for this research. Also, social desirability bias on the part of the respondents could have influenced the pattern in which the respondents reacted to items in section D.

Practical implications

This study has practical implications for the sensitization and training of librarians towards leveraging on the various open access technologies in delivering effective library and information services required in the Fourth Industrial revolution.

Originality/value

This study seeks to pioneer a new area of focus by examining digital librarianship practice and open access technology use as enablers of sustainable development.

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Article
Publication date: 7 November 2016

Adetoun A. Oyelude

This paper aims to concentrate on reviewing articles on open source software (OSS), found on the internet, that were published in the year 2016.

791

Abstract

Purpose

This paper aims to concentrate on reviewing articles on open source software (OSS), found on the internet, that were published in the year 2016.

Design/methodology/approach

A critical look is taken at OSS generally as found in the literature and also on the commonly used OSS in libraries and information science work or research work.

Findings

It is hoped that this review will assist in pointing out the trends and aid in informed decision-making, as it concerns OSS.

Social implications

Akintomide (2016) described OSS as a part of human existence which is exhibited in mobile devices that run on the android operating system, to computers, laptops and servers that run on the Linux operating system, to other software (Library management software inclusive) that are open access.

Originality/value

The openness of it makes the users (libraries and scholars) leave documentation that steers how the open software technologies are implemented and by whom. They are free, have used communities, are vetted by users and are constantly in development.

Details

Library Hi Tech News, vol. 33 no. 9
Type: Research Article
ISSN: 0741-9058

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Article
Publication date: 18 January 2019

Arto Sorsimo and Jaakko Heinonen

This paper aims to simulate a punch shear test of partly consolidated ice ridge keel by using a three-dimensional discrete element method. The authors model the contact forces…

334

Abstract

Purpose

This paper aims to simulate a punch shear test of partly consolidated ice ridge keel by using a three-dimensional discrete element method. The authors model the contact forces between discrete ice blocks with Hertz–Mindlin contact model. For freeze bonds between the ice blocks, the authors apply classical linear cohesion model with few modifications. Based on punch shear test simulations, the authors are able to determine the main characteristics of an ice ridge from the material parameters of the ice and freeze bonds.

Design/methodology/approach

The authors introduced a discrete model for ice that can be used for modelling of ice ridges. The authors started with short introduction to current status with ice ridge modelling. Then they introduced the model, which comprises Hertz–Mindlin contact model and freeze bond model with linear cohesion and softening. Finally, the authors presented the numerical results obtained using EDEM is commercial Discrete Element Modeling software (EDEM) and analysed the results.

Findings

The Hertz–Mindlin model with cohesive freeze bonds and linear softening is a reasonable model for ice rubble. It is trivial that the ice blocks within the ice ridge are not spherical particles, but according to results, the representation of ice blocks as spheres gave promising results. The simulation results provide information on how the properties of freeze bond affect the results of punch shear test. Thus, the simulation results can be used to approximate the freeze bonds properties within an ice ridge when experimental data are available.

Research limitations/implications

As the exact properties of ice rubble are unknown, more research is required both in experimental and theoretical fields of ice rubble mechanics.

Originality/value

Based on this numerical study, the authors are able to determine the main characteristics of an ice ridge from material parameters of ice and freeze bonds. Furthermore, the authors conclude that the model creates a promising basis for further development in other applications within ice mechanics.

Details

Engineering Computations, vol. 36 no. 2
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 7 August 2017

Guangming Chen, Dingena L. Schott and Gabriel Lodewijks

Sliding wear is a common phenomenon in the iron ore handling industry. Large-scale handling of iron ore bulk-solids causes a high amount of volume loss from the surfaces of…

484

Abstract

Purpose

Sliding wear is a common phenomenon in the iron ore handling industry. Large-scale handling of iron ore bulk-solids causes a high amount of volume loss from the surfaces of bulk-solids-handling equipment. Predicting the sliding wear volume from equipment surfaces is beneficial for efficient maintenance of worn equipment. Recently, the discrete element method (DEM) simulations have been utilised to predict the wear by bulk-solids. However, the sensitivity of wear prediction subjected to DEM parameters has not been systemically investigated at single particle level. To ensure the wear predictions by DEM are accurate and stable, this study aims to conduct the sensitivity analysis at the single particle level.

Design/methodology/approach

In this research, pin-on-disc wear tests are modelled to predict the sliding wear by individual iron ore particles. The Hertz–Mindlin (no slip) contact model is implemented to simulate interactions between particle (pin) and geometry (disc). To quantify the wear from geometry surface, a sliding wear equation derived from Archard’s wear model is adopted in the DEM simulations. The accuracy of the pin-on-disc wear test simulation is assessed by comparing the predicted wear volume with that of the theoretical calculation. The stability is evaluated by repetitive tests of a reference case. At the steady-state wear, the sensitivity analysis is done by predicting sliding wear volumes using the parameter values determined by iron ore-handling conditions. This research is carried out using the software EDEM® 2.7.1.

Findings

Numerical errors occur when a particle passes a joint side of geometry meshes. However, this influence is negligible compared to total wear volume of a wear revolution. A reference case study demonstrates that accurate and stable results of sliding wear volume can be achieved. For the sliding wear at steady state, increasing particle density or radius causes more wear, whereas, by contrast, particle Poisson’s ratio, particle shear modulus, geometry mesh size, rotating speed, coefficient of restitution and time step have no impact on wear volume. As expected, increasing indentation force results in a proportional increase. For maintaining wear characteristic and reducing simulation time, the geometry mesh size is recommended. To further reduce simulation time, it is inappropriate using lower particle shear modulus. However, the maximum time step can be increased to 187% TR without compromising simulation accuracy.

Research limitations/implications

The applied coefficient of sliding wear is determined based on theoretical and experimental studies of a spherical head of iron ore particle. To predict realistic volume loss in the iron ore-handling industry, this coefficient should be experimentally determined by taking into account the non-spherical shapes of iron ore particles.

Practical implications

The effects of DEM parameters on sliding wear are revealed, enabling the selections of adequate values to predict sliding wear in the iron ore-handling industry.

Originality/value

The accuracy and stability to predict sliding wear by using EDEM® 2.7.1 are verified. Besides, this research accelerates the calibration of sliding wear prediction by DEM.

Details

Engineering Computations, vol. 34 no. 6
Type: Research Article
ISSN: 0264-4401

Keywords

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Article
Publication date: 23 October 2023

Xiuwei Shi, Wujian Ding, Chunjie Xu, Fangwei Xie and Zuzhi Tian

In the process of conveying the solid–liquid two-phase medium of the centrifugal slurry pump, the wear of the flow-passing parts is an important problem affecting its life and…

193

Abstract

Purpose

In the process of conveying the solid–liquid two-phase medium of the centrifugal slurry pump, the wear of the flow-passing parts is an important problem affecting its life and safe operation. Therefore, a numerical investigation on the wear characteristics of the centrifugal slurry pump under different particle conditions was conducted.

Design/methodology/approach

A solid-liquid two-phase model based on CFD-DEM coupling is established and used to analyze the flow field and the wear characteristics of the flow-passing parts with different particle densities, volume fractions and sizes.

Findings

Particle conditions will affect the pump flow field. To analyze the pump wear characteristics, the wear distribution, wear value and cumulative force laws of flow-passing parts under different particle conditions are obtained. In each flow-passing part, with the increase of particle density, volume fraction and size, the wear area is concentrated and the wear depth increases. Under different particle conditions, the wear is mainly on the volute chamber and the blade pressure surface, and the tangential cumulative force of flow-passing parts is much larger than the normal cumulative force.

Originality/value

An accurate model and a coupled simulation method for predicting the wear of the slurry pump are obtained, and the wear characteristic law can provide a reference for the design of the slurry pump to reduce friction.

Details

Engineering Computations, vol. 40 no. 9/10
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 22 June 2022

Ching-Hung Lee, Dianni Wang, Shupeng Lyu, Richard David Evans and Li Li

Under uncertain circumstances, digital technologies are taken as digital transformation enablers and driving forces to integrate with medical, healthcare and emergency management…

1211

Abstract

Purpose

Under uncertain circumstances, digital technologies are taken as digital transformation enablers and driving forces to integrate with medical, healthcare and emergency management research for effective epidemic prevention and control. This study aims to adapt complex systems in emergency management. Thus, a digital transformation-driven and systematic circulation framework is proposed in this study that can utilize the advantages of digital technologies to generate innovative and systematic governance.

Design/methodology/approach

Aiming at adapting complex systems in emergency management, a systematic circulation framework based on the interpretive research is proposed in this study that can utilize the advantages of digital technologies to generate innovative and systematic governance. The framework consists of four phases: (1) analysis of emergency management stages, (2) risk identification in the emergency management stages, (3) digital-enabled response model design for emergency management, and (4) strategy generation for digital emergency governance. A case study in China was illustrated in this study.

Findings

This paper examines the role those digital technologies can play in responding to pandemics and outlines a framework based on four phases of digital technologies for pandemic responses. After the phase-by-phase analysis, a digital technology-enabled emergency management framework, titled “Expected digital-enabled emergency management framework (EDEM framework)” was adapted and proposed. Moreover, the social risks of emergency management phases are identified. Then, three strategies for emergency governance and digital governance from the three perspectives, namely “Strengthening weaknesses for emergency response,” “Enhancing integration for collaborative governance,” and “Engaging foundations for emergency management” that the government can adopt them in the future, fight for public health emergency events.

Originality/value

The novel digital transformation-driven systematic circulation framework for public health risk response and governance was proposed. Meanwhile, an “Expected digital-enabled emergency management framework (EDEM model)” was also proposed to achieve a more effective empirical response for public health risk response and governance and contribute to studies about the government facing the COVID-19 pandemic effectively.

Details

Industrial Management & Data Systems, vol. 123 no. 1
Type: Research Article
ISSN: 0263-5577

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Article
Publication date: 19 November 2021

Peng Yin, Yongjun Hou and Xianjin Wu

The purpose of this paper is to obtain the combination of working parameters suitable for pulsating negative pressure shale shaker through simulation, which is conducive to…

184

Abstract

Purpose

The purpose of this paper is to obtain the combination of working parameters suitable for pulsating negative pressure shale shaker through simulation, which is conducive to efficient recovery of clean drilling fluid and relatively dry cuttings.

Design/methodology/approach

Shale shaker is still one of the main equipment in solid–solid and solid–liquid separation processes in drilling industry. This research is based on a new drilling fluids circulation treatment device, namely pulsating negative pressure shale shaker. In this work, a numerical study of particle flow and separation in the pulsating negative pressure shale shaker is carried out by coupling computational fluid dynamics/discrete element method (CFD-DEM). The effect of vibration parameters and negative pressure parameters are studied in terms of conveyance velocity and percent through screen.

Findings

The results show that, conveyance velocity of particle is mainly affected by vibration parameters, negative pressure in pulsating form can effectively prevent cuttings from sticking to the screen. Vibration parameters and pulsating airflow velocity peak have great influence on percent through screen, while vibration frequency and screen slope have influence on the time when the percent through screen reaches stability.

Originality/value

In this paper, the authors put forward a new kind of drilling waste fluid treatment equipment, and focused on the study of particle movement law. The results have important guiding significance for the selection of structural design parameters and rational use of equipment. In addition, the new device provides a new idea for solid–liquid separation method, which is one of the hot topics in current research.

Details

Engineering Computations, vol. 39 no. 5
Type: Research Article
ISSN: 0264-4401

Keywords

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