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Article
Publication date: 1 December 2005

Conghui Fang

To describe the current status and expound the problems of the statistical and evaluation work on China's university libraries, and introduce the possible solutions and

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Abstract

Purpose

To describe the current status and expound the problems of the statistical and evaluation work on China's university libraries, and introduce the possible solutions and enforcement.

Design/methodology/approach

Alternative approaches for the statistical and evaluation work at China's college and university libraries, which are carried out at different levels, are introduced and analyzed to help the librarians for their library development.

Findings

Identifies the limitations and problems in current statistic and evaluation systems at China's college and university libraries and offers some suggestions how each aspect can improve.

Research limitations/implications

Data are difficult to obtain and upgrade. Lack of exhaustive data makes the conclusion unilateral sometimes.

Practical implications

Comprehensive introduction of the status quo of the statistical and evaluation work on China's college and university libraries is useful to those who want to know the situation in China. Constructive suggestions are useful to Chinese administration and librarians.

Originality/value

This paper introduces statistical and evaluation work on China's college and university libraries in the round, and gives some feasible suggestions.

Details

VINE, vol. 35 no. 4
Type: Research Article
ISSN: 0305-5728

Keywords

Article
Publication date: 1 April 1993

James H. Thompson and Bart H. Ward

Discusses alternative strategies which may be employed when differences arise between achieved audit‐sampling results and planned results, which means that risk levels used in ex

Abstract

Discusses alternative strategies which may be employed when differences arise between achieved audit‐sampling results and planned results, which means that risk levels used in ex post decision making may be different from planned levels. Contrasts a conventional strategy — which is to fix the risk of incorrect acceptance at a planned level and to ignore the risk of incorrect rejection or to accept the minimum available level of that risk which is consistent, after the fact, with the planned level of risk of incorrect acceptance — with a theoretically appealing strategy which balances both risk levels in proportion to their perceived disutility. Reports on the results of an experiment involving these two strategies, in which all subjects were auditors with statistical audit experience. Suggests that the most important statistically significant finding is that, in certain circumstances, these auditors are more willing to base audit decisions on statistical evidence after the alternative strategy is explained and available for their use.

Details

Managerial Auditing Journal, vol. 8 no. 4
Type: Research Article
ISSN: 0268-6902

Keywords

Article
Publication date: 17 August 2012

Jun Zhang, Zuqiang Liu, Yanjie Liu and Yong Liu

The purpose of this paper is to apply grey statistical model to identify and classify live fault rupture.

184

Abstract

Purpose

The purpose of this paper is to apply grey statistical model to identify and classify live fault rupture.

Design/methodology/approach

Based on grey statistical mode, this paper uses eight faults' ripping speed observation data from 1997 to 2001, according to the grey statistics method for analysis, and recognizes active fault rupture situation. Using the conventional methods, namely taking all faults monitoring stations' average dislocation rate to analysis and make judgment, the average results are obtained.

Findings

The results show that the results are closer to reality because the grey statistical evaluation method has considered dislocation rate and other discrete factors.

Practical implications

The method exposed in the paper can be used to monitor and recognize live fault rupture in earthquake prediction.

Originality/value

According to the fault dislocation rate, this paper advances active fault rupture identification and classification method based on grey statistical model.

Abstract

Details

The Handbook of Road Safety Measures
Type: Book
ISBN: 978-1-84855-250-0

Article
Publication date: 16 August 2022

Awel Haji Ibrahim, Dagnachew Daniel Molla and Tarun Kumar Lohani

The purpose of this study is to address a highly heterogeneous rift margin environment and exhibit considerable spatiotemporal hydro-climatic variations. In spite of limited…

Abstract

Purpose

The purpose of this study is to address a highly heterogeneous rift margin environment and exhibit considerable spatiotemporal hydro-climatic variations. In spite of limited, random and inaccurate data retrieved from rainfall gauging stations, the recent advancement of satellite rainfall estimate (SRE) has provided promising alternatives over such remote areas. The aim of this research is to take advantage of the technologies through performance evaluation of the SREs against ground-based-gauge rainfall data sets by incorporating its applicability in calibrating hydrological models.

Design/methodology/approach

Selected multi satellite-based rainfall estimates were primarily compared statistically with rain gauge observations using a point-to-pixel approach at different time scales (daily and seasonal). The continuous and categorical indices are used to evaluate the performance of SRE. The simple scaling time-variant bias correction method was further applied to remove the systematic error in satellite rainfall estimates before being used as input for a semi-distributed hydrologic engineering center's hydraulic modeling system (HEC-HMS). Runoff calibration and validation were conducted for consecutive periods ranging from 1999–2010 to 2011–2015, respectively.

Findings

The spatial patterns retrieved from climate hazards group infrared precipitation with stations (CHIRPS), multi-source weighted-ensemble precipitation (MSWEP) and tropical rainfall measuring mission (TRMM) rainfall estimates are more or less comparably underestimate the ground-based gauge observation at daily and seasonal scales. In comparison to the others, MSWEP has the best probability of detection followed by TRMM at all observation stations whereas CHIRPS performs the least in the study area. Accordingly, the relative calibration performance of the hydrological model (HEC-HMS) using ground-based gauge observation (Nash and Sutcliffe efficiency criteria [NSE] = 0.71; R2 = 0.72) is better as compared to MSWEP (NSE = 0.69; R2 = 0.7), TRMM (NSE = 0.67, R2 = 0.68) and CHIRPS (NSE = 0.58 and R2 = 0.62).

Practical implications

Calibration of hydrological model using the satellite rainfall estimate products have promising results. The results also suggest that products can be a potential alternative source of data sparse complex rift margin having heterogeneous characteristics for various water resource related applications in the study area.

Originality/value

This research is an original work that focuses on all three satellite rainfall estimates forced simulations displaying substantially improved performance after bias correction and recalibration.

Details

World Journal of Engineering, vol. 21 no. 1
Type: Research Article
ISSN: 1708-5284

Keywords

Content available
4681

Abstract

Details

Nutrition & Food Science, vol. 99 no. 6
Type: Research Article
ISSN: 0034-6659

Article
Publication date: 3 April 2023

Sebi Neelamkavil Pappachan

This study aims to intend and implement the optimal power flow, where tuning the production cost is done with the inclusion of stochastic wind power and different kinds of…

Abstract

Purpose

This study aims to intend and implement the optimal power flow, where tuning the production cost is done with the inclusion of stochastic wind power and different kinds of flexible AC transmission systems (FACTS) devices. Here, the speed with fitness-based krill herd algorithm (SF-KHA) is adopted for deciding the FACTS devices’ optimal sizing and placement integrated with wind power. Here, the modified SF-KHA optimizes the sizing and location of FACTS devices for attaining the minimum average production cost and real power depletions of the system. Especially, the objective includes reserve cost for overestimation, cost of thermal generation of the wind power, direct cost of scheduled wind power and penalty cost for underestimation. The efficiency of the offered method over several popular optimization algorithms has been done, and the comparison over different algorithms establishes proposed KHA algorithm attains the accurate optimal efficiency for all other algorithms.

Design/methodology/approach

The proposed FACTS devices-based power system with the integration of wind generators is based on the accurate placement and sizing of FACTS devices for decreasing the actual power loss and total production cost of the power system.

Findings

Through the cost function evaluation of the offered SF-KHA, it was noted that the proposed SF-KHA-based power system had secured 13.04% superior to success history-based adaptive differential evolution, 9.09% enhanced than differential evolution, 11.5% better than artificial bee colony algorithm, 15.2% superior to particle swarm optimization and 9.09% improved than flower pollination algorithm.

Originality/value

The proposed power system with the accurate placement and sizing of FACTS devices and wind generator using the suggested SF-KHA was effective when compared with the conventional algorithm-based power systems.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering , vol. 42 no. 6
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 5 September 2018

Ehsan Sadrossadat, Behnam Ghorbani, Rahimzadeh Oskooei and Mahdi Kaboutari

This study aims to examine the potential of two artificial intelligence (AI)-based algorithms, namely, adaptive neuro-fuzzy inference system (ANFIS) and gene expression…

Abstract

Purpose

This study aims to examine the potential of two artificial intelligence (AI)-based algorithms, namely, adaptive neuro-fuzzy inference system (ANFIS) and gene expression programming (GEP), for indirect estimation of the ultimate bearing capacity (qult) of rock foundations, which is a considerable civil and geotechnical engineering problem.

Design/methodology/approach

The input-processing-output procedures taking place in ANFIS and GEP are represented for developing predictive models. The great importance of simultaneously considering both qualitative and quantitative parameters for indirect estimation of qult is taken into account and explained. This issue can be considered as a remarkable merit of using AI-based approaches. Furthermore, the evaluation procedure of various models from both engineering and accuracy viewpoints is also demonstrated in this study.

Findings

A new and explicit formula generated by GEP is proposed for the estimation of the qult of rock foundations, which can be used for further engineering aims. It is also presented that although the ANFIS approach can predict the output with a high degree of accuracy, the obtained model might be a black-box. The results of model performance analyses confirm that ANFIS and GEP can be used as alternative and useful approaches over previous methods for modeling and prediction problems.

Originality/value

The superiorities and weaknesses of GEP and ANFIS techniques for the numerical analysis of engineering problems are expressed and the performance of their obtained models is compared to those provided by other approaches in the literature. The findings of this research provide the researchers with a better insight to using AI techniques for resolving complicated problems.

Article
Publication date: 8 January 2018

Odysseas Moschidis, Evrikleia Chatzipetrou and George Tsiotras

The purpose of this paper is to explore how the sophistication of a quality costing system depends on the quality management maturity (QMM) level in Food and Beverage (F&B…

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Abstract

Purpose

The purpose of this paper is to explore how the sophistication of a quality costing system depends on the quality management maturity (QMM) level in Food and Beverage (F&B) enterprises. Since no previous research has taken place in this area, the paper aims at analyzing the relationships between quality costing and the specific variables that define the various maturity stages.

Design/methodology/approach

A structured questionnaire was used to survey 457 F&B companies. This produced 104 usable responses (23 percent response rate). Multidimensional correspondence analysis (MCA) with hierarchical cluster analysis (HCA) were used to detect and represent underlying structures in the categorical data set and to detect possible clusters between variables.

Findings

The more mature a company’s QMM, the more emphasis they placed on appraisal quality costs and effective use of quality costs information. Prevention costs have no statistically significant connection with the level of maturity. A generalized “expensive” use of quality costing, with no focus on problematic areas and possible solutions, does not always lead to the resolution of problems.

Research limitations/implications

A complicated – and some think unfair – tax system, combined with limited cash liquidity constitutes an unstable environment for Greek companies, in which they have to survive and develop. This environment does not support quality costing, thus resulting in limited interest by company management in participating in the authors’ research. Furthermore, the Greek Uniform Chart of Accounts and the Greek Accounting Standards do not include specific quality-related accounts, making it difficult for companies to measure quality costs and for researchers to investigate the quality costing field.

Originality/value

It is the first time that QMM levels of Greek F&B companies have been reported. The research explores the characteristics that a quality costing system of Greek F&B organizations develop at the various maturity levels. The analysis uses an exploratory method – MCA – which can highlight intense correspondences of characteristics and clusters, which cannot be predicted in advance.

Details

International Journal of Productivity and Performance Management, vol. 67 no. 1
Type: Research Article
ISSN: 1741-0401

Keywords

Article
Publication date: 1 March 2004

Salvatore Nuccio and Ciro Spataro

This paper concerns with the measurement uncertainty estimation in the analog‐to‐digital conversion‐based instruments. By using an ad hoc developed software tool, the Monte Carlo…

411

Abstract

This paper concerns with the measurement uncertainty estimation in the analog‐to‐digital conversion‐based instruments. By using an ad hoc developed software tool, the Monte Carlo method is applied in order to assess the uncertainties associated with the measurement results, overcoming the possible inapplicability of the pure theoretical approach prescribed in the ISO – “Guide to the Expression of Uncertainty in Measurement”. By implementing the software tool in the measurement instruments, the proposed approach can be utilized in order to make the instrument itself able to auto‐estimate the measurement uncertainties.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 23 no. 1
Type: Research Article
ISSN: 0332-1649

Keywords

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