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Article
Publication date: 26 November 2019

Won-Gil Hyung, Sangyong Kim and Jung-Kyu Jo

Applied a hybrid approach using genetic algorithms (GAs) for a case-based retrieval process in order to increase the overall improved cost accuracy for a case-based…

Abstract

Purpose

Applied a hybrid approach using genetic algorithms (GAs) for a case-based retrieval process in order to increase the overall improved cost accuracy for a case-based library. The paper aims to discuss this issue.

Design/methodology/approach

A weight optimization approach using case-based reasoning (CBR) with proposed GAs for developing the CBR model. GAs are used to investigate optimized weight generation with an application to real project cases.

Findings

The proposed CBR model can reduce errors consistently, and be potentially useful in the early financial planning stage. The authors suggest the developed CBR model can provide decision-makers with accurate cost information for assessing and comparing multiple alternatives in order to obtain the optimal solution while controlling cost.

Originality/value

The system can operate with more accuracy or less cost, and CBR can be used to better understand the effects of factor interaction and variation during the developed system’s process.

Details

Engineering, Construction and Architectural Management, vol. 27 no. 2
Type: Research Article
ISSN: 0969-9988

Keywords

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Article
Publication date: 31 July 2019

Seoung-Wook Whang, Kenneth Sungho Park and Sangyong Kim

The purpose of this paper is to identify the critical success factors (CSFs) to implement integrated project delivery (IPD) systems in the Korean construction industry.

Abstract

Purpose

The purpose of this paper is to identify the critical success factors (CSFs) to implement integrated project delivery (IPD) systems in the Korean construction industry.

Design/methodology/approach

This study categorized potential CSFs and analyzed them using factor analysis and multiple regression analysis to choose the best ones based on responses from Korean construction experts.

Findings

In total, 29 potential factors were selected and categorized into 7 CSFs using factor analysis.

Originality/value

The outcomes of the study are useful as a reference for applying the IPD system in different developing countries and mid-sized construction industries.

Details

Engineering, Construction and Architectural Management, vol. 26 no. 10
Type: Research Article
ISSN: 0969-9988

Keywords

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Article
Publication date: 1 January 2014

Xina Yuan, SangYong Kim, Wanwen Dai and Jan Ketil Arnulf

The purpose of this paper is to show that the Guanxi characteristics in Chinese business culture may add to the understanding of foreign invested enterprise's (FIE…

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Abstract

Purpose

The purpose of this paper is to show that the Guanxi characteristics in Chinese business culture may add to the understanding of foreign invested enterprise's (FIE) successful marketing in China.

Design/methodology/approach

The authors surveyed the entry mode of 296 FIEs in China and examined their way of adapting marketing strategy to local culture. The authors used a conceptual model hypothesizing a system of variables that the authors subsequently tested using structural equation modeling.

Findings

Market orientation was insufficient to obtain marketing capability in China. FIE marketing capability in China was dependent on Guanxi and learning orientation, showing the need for contextualization of marketing approaches.

Research limitations/implications

This paper enriches previous research on marketing and makes a contribution to the existing literature on practical management in China. It is also relevant for marketing in other markets in transition.

Practical implications

FIEs may develop these capabilities on their own or succeed trough partnering in China. The study also points at similar mechanisms in other emerging markets and economies in transition from previous socialist economies.

Originality/value

The authors attempt to explore the main factors driving the marketing capabilities of FIEs in China. Few articles have shown how foreign companies may adopt Guanxi orientation to do this, which is the object of the present study.

Details

Baltic Journal of Management, vol. 9 no. 1
Type: Research Article
ISSN: 1746-5265

Keywords

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Article
Publication date: 6 May 2021

Zhe Wang, Xisheng Li, Xiaojuan Zhang, Yanru Bai and Chengcai Zheng

How to model blind image deblurring that arises when a camera undergoes ego-motion while observing a static and close scene. In particular, this paper aims to detail how…

Abstract

Purpose

How to model blind image deblurring that arises when a camera undergoes ego-motion while observing a static and close scene. In particular, this paper aims to detail how the blurry image can be restored under a sequence of the linear model of the point spread function (PSF) that are derived from the 6-degree of freedom (DOF) camera’s accurate path during the long exposure time.

Design/methodology/approach

There are two existing techniques, namely, an estimation of the PSF and a blind image deconvolution. Based on online and short-period inertial measurement unit (IMU) self-calibration, this motion path has discretized a sequence of the uniform speed of 3-DOF rectilinear motion, which unites with a 3-DOF rotational motion to form a discrete 6-DOF camera’s path. These PSFs are evaluated through the discrete path, then combine with a blurry image to restoration through deconvolution.

Findings

This paper describes to build a hardware attachment, which is composed of a consumer camera, an inexpensive IMU and a 3-DOF motion mechanism to the best of the knowledge, together with experimental results demonstrating its overall effectiveness.

Originality/value

First, the paper proposes that a high-precision 6-DOF motion platform periodically adjusts the speed of a three-axis rotational motion and a three-axis rectilinear motion in a short time to compensate the bias of the gyroscope and the accelerometer. Second, this paper establishes a model of 6-DOF motion and emphasizes on rotational motion, translational motion and scene depth motion. Third, this paper addresses a novel model of the discrete path that the motion during long exposure time is discretized at a uniform speed, then to estimate a sequence of PSFs.

Details

Sensor Review, vol. 41 no. 2
Type: Research Article
ISSN: 0260-2288

Keywords

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