bluuebunny/crossref_metadata_2025_split huggingface dataset:
Boosted regression trees
Authors: J. McCluskey William , Zulkarnain Daud Dzurllkanian , Kamarudin Norhaya 
Published: August 2014

Purpose– The purpose of this paper is to apply boosted regression trees (BRT) to a heterogeneous data set of residential property drawn from a jurisdiction in Malaysia, with the objective to evaluate its application within the mass appraisal environment in Malaysia. Machine learning (ML) techniques have been applied to real estate mass appraisal with varying degrees of success.Design/methodology/approach– To evaluate the performance of the BRT model two multiple regression analysis (MRA) models have been specified (linear and non-linear). One of the weaknesses of traditional regression is the need to a priori specify the functional form of the model and to ensure that all non-linearities have been accounted for. For a BRT model the algorithm does not require any predetermined model or variable transformations, making the process much simpler.Findings– The results show that the BRT model outperformed the MRA-specified models in terms of the coefficient of dispersion and mean absolute percentage error. While the results are encouraging, BRT models still lack transparency and suffer from the inability to translate variable importance into quantifiable variable effects.Practical implications– This paper presents a useful alternative modelling technique, BRT, for use within the mass appraisal environment in Malaysia. Its advantages include less intensive data cleansing, no requirement to specify the predictive underlying model, ability to utilise categorical variables without the need to transform them and not as data hungry, as for example, MRA.Originality/value– This paper adds to the knowledge in this area by applying a relatively new ML model, BRT to residential property data from a jurisdiction in Malaysia. BRT has shown promise as a strong predictive model when applied in other disciplines; therefore this research empirically tests this finding within real estate valuation.
An empirical analysis of the exit of SMEs tendering for public works in the Japanese construction industry
Authors: Konno Yukiko 
Published: August 2014

Purpose
– The purpose of this study is to examine what factors affect the exit of small and medium-sized enterprises (SMEs) from tendering for public works in the Japanese construction industry using the Keiei Jikou Sinsa or Keisin (the database for evaluation of construction companies in Japan).

Design/methodology/approach
– This study empirically analyzes SMEs’ exit using the binary logit model. For the empirical analysis, it uses the scores as well as financial and non-financial performance indicators of Keisin data.

Findings
– The Keisin scores (the total score and W score), financial performance indicators (cash flow from operations and capital) and non-financial performance indicators (having unemployment insurance and operating years) significantly affect SME exits. Although the Keisin data are used for bid entry qualifications of public works, they can be applied to a factor analysis of the exit of SMEs in the construction industry.

Originality/value
– As there exists little empirical analysis of the exit of SMEs globally, this study contributes to the research on this phenomenon.
A group learning curve model with and without worker turnover
Authors: H. Glock Christoph , Y. Jaber Mohamad 
Published: August 2014

Purpose– The purpose of the paper is to develop a mathematical model that describes group learning processes with and without worker turnover.Design/methodology/approach– Based on an extensive literature review, fundamental characteristics of group learning processes are first identified and then incorporated into a group learning curve (GLC). The developed GLC is then validated by fitting to empirical data.Findings– The results show that the behaviour of the developed model is in conformance with the characteristics identified in the literature. A comparison with two other learning curves that have frequently been discussed in the literature shows that the GLC developed in this paper is a good mathematical representation of group learning processes.Practical implications– The model developed in this paper enables practitioners to predict performance improvement in groups.Originality/value– The paper is one of the first to propose a mathematical formulation of a GLC.
Advertising in online social networks: the role of perceived enjoyment and social influence
Authors: Maria Soares Ana , Carlos Pinho José 
Published: August 2014

Purpose
– The purpose of this study is to analyse the impact of perceived enjoyment in advertising response in online social networks (OSN). The authors propose and test a structural model explaining response to OSN advertisements embracing perceived enjoyment, social influence and advertising-related variables.

Design/methodology/approach
– Data were gathered through the application of a structured questionnaire to a sample of 126 students of the same scientific area (marketing and communication studies).

Findings
– The results validate the proposed model and support nine out of ten hypotheses. The study supports the role of perceived enjoyment as a predictor of both social identity and group norms. Furthermore, social identity and group intention have a positive impact on perceived advertisement relevance. Finally, group intention towards advertisements and perceived advertisement relevance have a positive impact on perceived advertisement value, which in turn impacts positively on response to OSN advertisements.

Research limitations/implications
– The main limitation relates to the fact that the study mainly covered a population aged between 18-35 years old. Despite its relevance as a segment of OSN users, some caution needs to be taken in generalizing findings to a broader population.

Practical implications
– These results provide important indications for firms aiming at fully exploiting the computer-mediated communication of OSNs. Specifically, we confirm the role of perceived enjoyment in reinforcing group dynamics and shaping group intentions towards advertising.

Originality/value
– The main contribution of this study lies in the focus on perceived enjoyment as a predicting variable of social influence and advertising variables, thus impacting response to OSN advertisements.
Consumer – brand engagement on Facebook: liking and commenting behaviors
Authors: Kabadayi Sertan , Price Katherine 
Published: August 2014

Purpose– The purpose of this paper is to study factors affecting consumers’ liking and commenting behavior on Facebook brand pages, and to analyze the mediating role of mode of interaction on relationships between personality traits and liking/commenting behavior.Design/methodology/approach– Data were collected using an online national survey from 269 respondents, ages between 18 and 32. The hypotheses were tested using structural equation modeling.Findings– Results support nine of ten hypotheses with significant relationships between analyzed constructs. It was found that two different modes of interaction acted as mediators between three personality traits and liking/commenting behavior on Facebook.Research limitations/implications– This study only included liking and commenting behavior on Facebook. Future studies could extend the conceptual model by including sharing behavior and other personality traits that were not included in this conceptual model.Practical implications– The findings have several implications for brand managers with respect to their social media strategies and give them guidance in achieving better customer engagement on Facebook. This research is an important step in understanding the factors affecting consumers’ Facebook behavior and useful for practitioners intending to use Facebook as part of their marketing strategy.Originality/value– The study provides a comprehensive framework to understand consumer engagement on Facebook by including specific types of Facebook behavior, three personality traits and two modes of interaction that consumers have in social media.
The role of organizational mindfulness in firms’ globalization and global market performance
Authors: Bayraktar Ahmet , Oly Ndubisi Nelson 
Published: August 2014

Purpose– This research aims at contributing to international marketing literature by reconsidering the drivers of firms’ globalization and global market performance in the light of organizational mindfulness concept.Design/methodology/approach– Based on industrial organization theory, resource-based view and literature on organizational mindfulness, a conceptual framework is presented to characterize how organizational mindfulness impacts firms’ globalization process and global market performance. In total, 14 propositions are extracted.Findings– This paper proposes that organizational mindfulness plays a significant role in firms’ entry into foreign markets, global extension and global market performance. More specifically, organizational mindfulness positively moderates the relationships between external globalization drivers and the extent of firms’ globalization. In addition, organizational mindfulness is an antecedent to strategic processes, whereas it positively moderates the relationships between other internal drivers and firms’ globalization and global market performance. Furthermore, this paper suggests that country equity is a significant external globalization driver that also moderates the relationship between the extent of firms’ globalization and global market performance.Research limitations/implications– The proposed framework contributes to international marketing research by integrating organizational mindfulness concept into the drivers of firms’ globalization and global market performance, and highlights its crucial role in the pursuit of opportunities in the global marketplace. The paper suggests that firms should create mindful organizations to expand its activities into global markets and achieve desirable global market performance. In other words, they should improve collective mindfulness to survive in today’s hyper-competitive markets.Originality/value– The paper represents the first attempt that incorporates organizational mindfulness concept into firms’ globalization process. Highlighting the importance of developing mindful organizations, it reconsiders the drivers of firms’ global expansion and global market performance. Furthermore, it is the first attempt that introduces the country equity construct as an external driver of firms’ global extension and as a moderator between organizational reform measures and global market performance.
Total availability of journal articles to Internet users
Authors: White Bruce 
Published: August 2014

Purpose
– This paper aims to determine the outcome of the different measures taken towards open access (OA) to peer-reviewed research by measuring aggregate availability of a sample of journal articles. This sample was then used to examine the factors contributing to the availability or non-availability of types of article.

Design/methodology/approach
– A sample of articles was taken from the Scopus database based on a search by surname. This minimised any skew that would result from a dataset based on subject or source. The results were analysed to determine availability by subject and differences in availability based on source.

Findings
– Less than 30 per cent of articles are available in their year of publication, rising to nearly 40 per cent in following years. Repositories are responsible for slightly less than 50 per cent of available articles. Substantial differences exist between the practices of scholarly societies and commercial publishers.

Practical implications
– Aggregate availability is dependent on a range of activities and current efforts need to be maintained to ensure its continuance. Moves towards OA by commercial publishers are not a major factor.

Social implications
– Non-affiliated researchers are able to access less than half of the peer-reviewed literature.

Originality/value
– This study differs from similar work by looking at access from the users’ viewpoint. Rather than looking at the total amount of material to which access is provided, it looks at the proportion of high-value information which is available.
Perceived usefulness, perceived ease-of-use and faculty acceptance of electronic books
Authors: Nasser Al-Suqri Mohammed 
Published: August 2014

Purpose
– This paper aims to extend the use of the technology acceptance model (TAM) to faculty acceptance of e-books at Sultan Qaboos University (SQU) in the Sultanate of Oman. Electronic books (e-books) are becoming increasingly important in society in general and among academic faculty, concomitant with the growth of portable electronic devices that facilitate the reading of e-books.

Design/methodology/approach
– The effects of language and personal characteristics (gender, age and field of study) in relation to perceived usefulness, perceived ease-of-use and usage of e-books for academic work among respondents are examined using data derived from a survey of 332 faculty members at SQU.

Findings
– Findings were that participants who perceived that electronic books were easier to use also tended to be those who used them more; younger male faculty whose first language was Arabic tended to have higher levels of usage than females, older faculty or faculty whose first language was not Arabic. Faculty in the social sciences and the life and health sciences tended to have lower levels of usage behaviour than those in the arts and humanities, business or law or physical sciences or engineering.

Practical implications
– Implications are that e-book acceptance among faculty at SQU is similar to that of faculty in Western universities and that the TAM is a relatively good predictor of e-book usage regardless of geographical location.

Originality/value
– The value of the present study is that identification of factors affecting scholars’ e-book usage behaviours may provide library managers with a better understanding of the way in which they can support faculty. Further, by focusing on e-book adoption by faculty in a non-Western country, results of the research help to fill a gap on an under-researched population.
An overall index of intellectual capital
Authors: Cricelli Livio , Greco Marco , Grimaldi Michele 
Published: August 2014

Purpose
– The aim of this article is to expound a holistic intellectual capital index. Moreover, the paper presents its implementation within a real estate organization.

Design/methodology/approach
– The index is calculated on the basis of 14 structured interviews synthesized through the analytic hierarchy process, min–max normalizations and weighted sums.

Findings
– The authors estimate a holistic intellectual capital index and show that an analysis of its components may allow identifying discordances within the organization about the contributions of its value drivers.

Research limitations/implications
– The proposed index may be used in a medium-/long-term research to measure the evolution in the organizational intellectual capital and its relation with the top management’s initiatives and the competitive environment changes.

Practical implications
– The proposed methodology may integrate the reports prepared for shareholders and stakeholders and provide the top management, with an in-depth understanding of the different perceptions of the organizational human resources.

Originality/value
– The authors discuss a holistic index of intellectual capital that allows considering both the performances of the intellectual capital components and the interdependencies among them and also their strategic contribution to the value-creation process. In addition, they propose a novel descriptive statistical analysis of the assessment and management of IC-index components to draw indications for the top management.
Transactive memory systems and team innovation
Authors: Peltokorpi Vesa , Hasu Mervi 
Published: August 2014

Purpose
– The purpose of this paper is to hypothesize a curvilinear relation between transactive memory systems (TMS) and team innovation by integrating diverging conceptual and research findings in TMS research. While increasingly argued to enhance team innovation, TMS also have negative effects on team processes and outcomes.

Design/methodology/approach
– The authors tested the hypothesis through hierarchical linear regression analyses using data obtained from 124 technical research teams.

Findings
– Logistic regressions support the hypothesis, showing an inverse U-shaped relationship between TMS and team innovation, measured by patents received.

Research limitations/implications
– The average within team response rate was relatively low, and the findings are driven by a limited number of teams with patents.

Practical implications
– The findings suggest that research teams with moderate levels of TMS are the most effective in terms of patents received.

Originality/value
– To the best of the authors’ knowledge, this is the first empirical study to link TMS to team innovation and to test the potential counterproductive effects of TMS on team innovation.
The interactive influences of conflict, task interdependence and cooperation on perceptions of virtualness in co-located teams
Authors: Stark Eric , Bierly† Paul , R. Harper Steven 
Published: August 2014

Purpose– This paper aims to explore the interactive influence of conflict, task interdependence and cooperation on individual perceptions of team virtualness levels. The study attempts to provide additional insight regarding how or why virtual structures might develop in teams with co-located team members.Design/methodology/approach– Data were collected from 355 upper-level business students assigned to the same team in four class integrated business courses. Moderated hierarchical regression was utilized in examining the moderating role of cooperation with conflict and task interdependence in predicting virtualness.Findings– Cooperation positively moderates the relationships between relationship conflict and perceived virtualness and between perceived task interdependence and perceived virtualness. In addition, conditional support exists for a cooperation and process conflict interaction in predicting virtualness.Originality/value– Many teams are mandated to be virtual either by management direction, task and resource requirements or by necessity due to being geographically dispersed. However, additional factors may influence the level of virtualness in teams with co-located members. This study provides preliminary evidence that an individual’s experiences in teams influences the individual’s views regarding the virtual structure of his or her team.
Distribution of ether lipids and composition of the archaeal community in terrestrial geothermal springs: impact of environmental variables
Authors: Xie Wei , Zhang Chuanlun L. , Wang Jinxiang , Chen Yufei , Zhu Yuanqing , de la Torre José R. , Dong Hailiang , Hartnett Hilairy E. , Hedlund Brian P. , Klotz Martin G. 
Published: August 2014

SummaryArchaea can respond to changes in the environment by altering the composition of their membrane lipids, for example, by modification of the abundance and composition of glycerol dialkyl glycerol tetraethers (GDGTs). Here, we investigated the abundance and proportions of polar GDGTs (P‐GDGTs) and core GDGTs (C‐GDGTs) sampled in different seasons from Tengchong hot springs (Yunnan, China), which encompassed a pH range of 2.5–10.1 and a temperature range of 43.7–93.6°C. The phylogenetic composition of the archaeal community (reanalysed from published work) divided the Archaea in spring sediment samples into three major groups that corresponded with spring pH: acidic, circumneutral and alkaline. Cluster analysis showed correlation between spring pH and the composition of P‐ and C‐GDGTs and archaeal 16S rRNA genes, indicating an intimate link between resident Archaea and the distribution of P‐ and C‐GDGTs in Tengchong hot springs. The distribution of GDGTs in Tengchong springs was also significantly affected by temperature; however, the relationship was weaker than with pH. Analysis of published datasets including samples from Tibet, Yellowstone and the US Great Basin hot springs revealed a similar relationship between pH and GDGT content. Specifically, low pH springs had higher concentrations of GDGTs with high numbers of cyclopentyl rings than neutral and alkaline springs, which is consistent with the predominance of high cyclopentyl ring‐characterized Sulfolobales and Thermoplasmatales present in some of the low pH springs. Our study suggests that the resident Archaea in these hot springs are acclimated if not adapted to low pH by their genetic capacity to effect the packing density of their membranes by increasing cyclopentyl rings in GDGTs at the rank of community.
HesF, an exoprotein required for filament adhesion and aggregation in Anabaena sp. PCC 7120
Authors: Oliveira Paulo , Pinto Filipe , Pacheco Catarina C. , Mota Rita , Tamagnini Paula 
Published: August 2014

SummaryHere, we report on the identification and characterization of a protein (Alr0267) named HesF, found in the extracellular milieu of Anabaena sp. PCC 7120 grown diazotrophically. hesF was found to be highly upregulated upon transition from non‐nitrogen‐fixing to nitrogen‐fixing conditions, and the highest transcript levels were detected towards the end of the heterocyst differentiation process. The hesF promoter drives transcription of the gene in heterocysts only, and both NtcA and HetR are essential for the gene's in vivo activation. An examination of HesF's translocation showed that the secretion system is neither heterocyst‐specific nor dependent on nitrogen‐fixing conditions. Furthermore, HesF was found to be a type I secretion system substrate, since an HgdD mutant failed to secrete HesF. Several analyses revealed that a HesF minus mutant strain lacks the heterocyst‐specific polysaccharide fibrous layer, accumulates high amounts of polysaccharides in the medium and that HesF is essential for the typical aggregation phenotype in diazotrophic conditions. Thus, we propose that HesF is a carbohydrate‐binding exoprotein that plays a role in maintaining the heterocyst cell wall structure. A combination of and possibly interaction between HesF and heterocyst‐specific polysaccharides seems to be responsible for filament adhesion and culture aggregation in heterocyst‐forming cyanobacteria.
Risk Aversion and Emotions
Authors: Nguyen Yen , Noussair Charles N. 
Published: August 2014

AbstractWe consider the relationship between emotions and decision‐making under risk. Specifically, we examine the emotional correlates of risk‐averse decisions. In our experiment, individuals' facial expressions are monitored with face reading software, as they are presented with risky lotteries. We then correlate these facial expressions with subsequent decisions in risky choice tasks. We find that a more positive emotional state is positively correlated with greater risk taking. The strength of a number of emotions, including fear, happiness, anger and surprise, is positively correlated with risk aversion.