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1 – 10 of over 3000Young Man Ko, Min Sun Song and Seung Jun Lee
The purpose of this paper is to construct a structural definition-based terminology ontology system that defines the meanings of academic terms on the basis of properties…
Abstract
Purpose
The purpose of this paper is to construct a structural definition-based terminology ontology system that defines the meanings of academic terms on the basis of properties and links terms with properties that are structured by conceptual categories (classes). This study also aims to test the possibility of semantic searches by generating inference rules and setting very complicated search scenarios.
Design/methodology/approach
For the study, 55,236 keywords from the articles of the “Korea Citation Index” were structurally defined and relationships among terms and properties were built. Then, the authors converted the RDB data into RDF and designed ontologies using the ontology developing tool Protégé. The authors also tested the designed ontology with the inference engine of the Protégé editor. The generated reference rules were tested by TBox and SPARQL queries.
Findings
The authors generated inference control rules targeting high-input-ratio data in the properties of classes by calculating the input ratio of real input data in the system, and then the authors executed a semantic search by SPARQL query by setting very complicated search scenarios, for which it would be difficult to deduce results via a simple keyword search. As a result, it was confirmed that the search results show the logical combination of semantically related term data.
Practical implications
The proposed terminology ontology system was constructed with the author keywords from research papers, it will be useful in searching the research papers which include the keywords as search results by the complex combination of semantic relation. And the Structural Terminology Net database could be utilized as an index database in retrieval services and the mining of informal big data through the application of well-defined semantic concepts to each term.
Originality/value
This paper presented a methodology for supporting IR using expanded queries based on a novel model of structural terminology-based ontology. The user who wants to access the specific topic can create query that brings the semantically relevant information. The search results show the logical combination of semantically related term data, which would be difficult to deduce results via traditional IR systems.
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Yong Guo, Shen-Min Song and Xue-Hui Li
This paper aims to investigate the problem of finite-time consensus tracking control without unwinding for formation flying spacecraft in the presence of external disturbances.
Abstract
Purpose
This paper aims to investigate the problem of finite-time consensus tracking control without unwinding for formation flying spacecraft in the presence of external disturbances.
Design/methodology/approach
Two distributed finite-time controllers are developed using the backstepping sliding mode. The first robust controller can compensate for external disturbances with known bounds, and the second one can compensate for external disturbances with unknown bounds.
Findings
Because the controllers are designed on the basis of rotation matrix, which represents the set of attitudes both globally and uniquely, the system can overcome the drawback of unwinding, which results in extra fuel consumption. Through introducing a novel virtual angular velocity, exchange of control signals between neighboring spacecraft becomes unnecessary, and it is able to reduce the communication burden.
Practical implications
The two robust controllers can deal with unwinding that may result in fuel consumption by traveling a long distance before returning to a desired attitude when the closed-loop system is close to the desired attitude equilibrium.
Originality/value
Two finite-time controllers without unwinding are proposed for formation flying spacecraft by using backstepping sliding mode. Furthermore, exchange of control signals between neighboring spacecraft is unnecessary.
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Kai Zhao, Li-Guo Tan and Shen-Min Song
This paper aims to give the centralized and distributed fusion estimator for nonlinear multi-sensor networked systems with packet loss compensation and correlated noises…
Abstract
Purpose
This paper aims to give the centralized and distributed fusion estimator for nonlinear multi-sensor networked systems with packet loss compensation and correlated noises and give the corresponding square-root cubature Kalman filter.
Design/methodology/approach
Based on the Gaussian approximation recursive filter framework, the authors derive the centralized fusion filter and using the projection theorem, the authors derive the centralized fusion smoother. Then, based on the fast batch covariance intersection fusion algorithm, the authors give the corresponding results for distributed fusion estimators.
Findings
Designing the fusion estimators for nonlinear multi-sensor networked systems with packet loss compensation and correlated noises is necessary. It is useful for general nonlinear systems.
Originality/value
Throughout the whole study, the main highlights of this paper are as follows: packet loss compensation and correlated noises are considered in nonlinear multi-sensor networked systems. There are no relevant conclusions in the existing literature; centralized and distributed fusion estimators are derived based on the above system; for the posterior covariance with compensation factor and correlated noises, a new square-root factor of the error covariance is derived; and the new square-root factor of the error covariance is used to replace the numerical implementation of the covariance in cubature Kalman filter (CKF), which simplified the problem in calculating the posterior covariance in CKF.
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Po-Hsing Tseng and Chun-Hsiung Liao
The purpose of this paper is to use a theoretical framework (i.e. resource-based view) to investigate causal relationships between the supply chain integration, market…
Abstract
Purpose
The purpose of this paper is to use a theoretical framework (i.e. resource-based view) to investigate causal relationships between the supply chain integration, market orientation, information technology (IT) application and firm performance of container shipping firms in Taiwan.
Design/methodology/approach
The data are collected from 124 container shipping firms in Taiwan. The methodologies used in the paper are exploratory factor analysis, confirmatory factor analysis and structural equation modeling.
Findings
The findings indicated that IT application and market orientation positively influence supply chain integration. It revealed that IT-based and market-oriented firms more easily integrate market information related to partners, departments and customers. Further, supply chain integration and market orientation have a positive effect on firm performance.
Research limitations/implications
Such a result indicated a market-oriented firm quickly responds to market information and competitors’ strategies; and thus, it would make effort to offer satisfactory customer services in dynamically fluctuating markets, and obtain better firm performance. Also, the integration provides higher operation efficiency and obtains an enhanced performance improvement.
Practical implications
The results also indicated that firms are able to develop their market-oriented strategies through electronic information transmission and exchange platform. Based on the study’s findings, managerial strategies are proposed to improve firm performance.
Originality/value
This paper clarifies the concept of supply chain integration, market orientation and IT application in the context of container shipping, and investigates the inter-relationship between supply chain integration, market orientation, IT application and firm performance and develop a conceptual model in the context of container shipping.
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This paper proposes a scheme to estimate the technical efficiency at child care centers for the less‐than‐three‐year‐old infants by Data Envelopment Analysis (DEA) and to…
Abstract
This paper proposes a scheme to estimate the technical efficiency at child care centers for the less‐than‐three‐year‐old infants by Data Envelopment Analysis (DEA) and to manage the quality of care service through implementing flexible and efficient government subsidy system. The result of technical efficiency estimation shows that there exists the heterogeneity in technical efficiency a substantial opportunity for improvement in technical efficiency across child care centers. This result implies that government may bring up the competition by giving subsidy differentially based on efficiency and use the money which has been used inefficiently other purposes. Both can improve the quality of child care service.
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This paper is to develop a quality measure to evaluate the quality level of child care service in the regional level. By utilizing the biannual intensive child care…
Abstract
This paper is to develop a quality measure to evaluate the quality level of child care service in the regional level. By utilizing the biannual intensive child care statistical reports, ten variables are integrated and summarized as a quality measure for child care service in regional level by employing Principal Component Analysis (PCA). Conclusively, it is possible to get a comprehensive measure and the measure obtained from data between 2003 and 2008 illustrates the difference in child care service quality among regions over years. With the measure developed by this research, each region can also get very good insight into what kinds of factors of child care service should be paid more attention to in order to improve the quality of its child care service. Moreover, the measure obtained in this paper is proven reliable and robust in that it reflects the quality of child care service in each region and gives us statistically uniform quality scores with a different data set.
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– The purpose of this paper is to establish the portfolio models of contained grey profit under uncertainty, and the results are applied to solve uncertain investment problem.
Abstract
Purpose
The purpose of this paper is to establish the portfolio models of contained grey profit under uncertainty, and the results are applied to solve uncertain investment problem.
Design/methodology/approach
In investment problems, uncertainties may exist in model parameters and input data. For the investment problems contained grey profit and incomplete information about natural world state, according to the portfolio theory, the grey systems theory and the uncertainty decision theory, the paper puts forward portfolio models and the methods.
Findings
Traditional uncertainty decision is researched for incomplete information about natural world state, in reality, investment problems are not only uncertain state information, but income are uncertain.
Practical implications
Because the investment problems have been widely used in economic analysis, decision analysis and economic management, examples are provided at the end to verify its feasibility.
Originality/value
The paper successfully combined the portfolio theory, the gray system theory and uncertainty decision theory and new uncertainty investment decision-making models and methods are presented.
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Caroline Beebe, Emily Nedell, Min Song, Jeanne Sullivan, Kara Overfelt, Jenny Schatz and Elisabeth Davenport
The paper reports the results of a small qualitative study of six widely different publishing operations in a Mid‐West campus town. Participants were asked to describe…
Abstract
The paper reports the results of a small qualitative study of six widely different publishing operations in a Mid‐West campus town. Participants were asked to describe their organisation, their own work, the role of technology and procedures for purchasing technology. The responses showed a marked lack of strategic planning for technology investment in all of the participating organisations, though there were differences across the group in other areas, notably participation in purchasing decisions and training. The authors identify seven salient themes which may be explored with a larger sample.
Joseph A. Kotarba and Nicolas J. LaLone
The concept of the music scene has served sociologists well in providing a template for studying the organization of various musical styles and the people who work…
Abstract
The concept of the music scene has served sociologists well in providing a template for studying the organization of various musical styles and the people who work together to create the musical experiences. Writers including Howard Becker, Richard Peterson, Andy Bennett, David Grazian, and Joseph Kotarba have explored music scenes ranging from jazz, blues and rock to country and Latino styles. Although there is no one consensual definition of music scene, the notion of place, in a physical, empirical, and geo-local sense, seems to be a universal concern in the literature. In this chapter, we will outline a more inclusive, interactionist-oriented, and updated concept of the music scene that is at once interactionist in tone and perspective, while sensitive to dramatic changes occurring both in the world of politics and in the world of digital media. Perhaps most importantly, the concept of music scene can provide insight into the historical fact that, in spite of technological advancements, the live music experience is still at the heart of musical experiences across communities and cultures.
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The purpose of this paper is to examine current practices of logistics cost management (LCM) in Mainland China and identify factors impacting on the effectiveness of LCM.
Abstract
Purpose
The purpose of this paper is to examine current practices of logistics cost management (LCM) in Mainland China and identify factors impacting on the effectiveness of LCM.
Design/methodology/approach
The questionnaire‐based survey is conducted in Mainland China. To analyze the status quo of LCM in Mainland China, the paper takes two nonparametric tests, Mann‐Whitney U‐test and Kruskal‐Wallis one‐way analysis of variance to compare the difference between firms with and without attaching importance to LCM.
Findings
The difficulties of LCM in China is as follows: first, there is a lack of effective cost measurement tools and analyses as well as reporting systems, especially in terms of distributors. Second, it is very critical to organize intra‐organizational cross‐functional teams and inter‐organizational collaboration based on business processes to promote information integrating instead of blindly investing on information technology application. Third, professional logistics managers are in short supply, even among logistics service providers.
Research limitations/implications
First, although the sample covers some industries, the generalization of the conclusion is still limited due to sample size. In future research, more industries should be covered to test the hypotheses proposed. Second, this paper just analyzes the status quo of Chinese company LCM. Future studies are encouraged to deeply explore internal and external operational management factors impacting on LCM.
Practical implications
This paper is a very insightful source of information about LCM in Mainland China for logistics managers and policy makers. This paper provides logistics managers with insight so as to improve their performance. There are also suggestions for government and educational institutions to provide more resources to develop and offer more logistics courses and training programs to fulfill the needs of the logistics industry. The paper sets up a basis for research on LCM in China.
Originality/value
Despite the importance of LCM in Mainland China, the extant literatures scarcely have a sound analysis. Theoretically, this paper extends theories of LCM in China and identifies main issues concerning LCM. This paper is an exploratory study to figure out an effective LCM approach in China.
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