bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental research on frictional resistance of smart isolation tool during maintenance operation in offshore pipeline
Authors: Zhang Kang , Zhu Xiaoxiao , Zhang Shimin , Ding Qingxin , He Zichen 
Published: August 2018

Purpose
Pipeline maintenance technology using smart isolation tool is becoming more widely used in the global scope. This paper aims to investigate the effects of parameters on the frictional resistance between the slip and pipeline and the frictional characteristics under different lubrication films.

Design/methodology/approach
An experimental platform consisting of slip, pipeline and data acquisition system was developed, wherein the slip slips on the pipeline under different normal forces and velocities. In addition, three lubrication conditions, namely, dry wall, oil liquid and black powder on the wall, were investigated to study the effects of lubrications on the frictional coefficient and characteristics.

Findings
Research results indicate that the frictional force and coefficient were sensitive to normal force. The crude oil affected the frictional coefficient within a certain range of normal force, and the black powder enhanced the surface roughness in the natural gas pipeline. However, velocity had no effect on them. In addition, different contact behaviors could be observed from the frictional coefficient curves.

Originality/value
In this paper, the effects of normal force and velocity on frictional resistance of sliding slip during decelerating process in pipeline were investigated, and the effects of lubrication films on frictional characteristics were also revealed. The research results are of great value to improve the prediction accuracy of smart isolation tool, and also provide a guiding significance for the development of maintenance operation in pipelines.
An outcome-based process optimization model using fuzzy-based association rules
Authors: Lau Henry , Lee C.K.M. , Nakandala Dilupa , Shum Paul 
Published: August 2018

Purpose
The purpose of this paper is to propose an outcome-based process optimization model which can be deployed in companies to enhance their business operations, strengthening their competitiveness in the current industrial environment. To validate the approach, a case example has been included to assess the practicality and validity of this approach to be applied in actual environment.

Design/methodology/approach
This model embraces two approaches including: fuzzy logic for mimicking the human thinking and decision making mechanism; and data mining association rules approach for optimizing the analyzed knowledge for future decision-making as well as providing a mechanism to apply the obtained knowledge to support the improvement of different types of processes.

Findings
The new methodology of the proposed algorithm has been evaluated in a case study and the algorithm shows its potential to determine the primary factors that have a great effect upon the final result of the entire operation comprising a number of processes. In this case example, relevant process parameters have been identified as the important factors causing significant impact on the result of final outcome.

Research limitations/implications
The proposed methodology requires the dependence on human knowledge and personal experience to determine the various fuzzy regions of the processes. This can be fairly subjective and even biased. As such, it is advisable that the development of artificial intelligence techniques to support automatic machine learning to derive the fuzzy sets should be promoted to provide more reliable results.

Originality/value
Recent study on the relevant topics indicates that an intelligent process optimization approach, which is able to interact seamlessly with the knowledge-based system and extract useful information for process improvement, is still seen as an area that requires more study and investigation. In this research, the process optimization system with an effective process mining algorithm embedded for supporting knowledge discovery is proposed for use to achieve better quality control.
Sponsorship image transfer theory in virtual brand communities
Authors: Alonso Dos Santos Manuel , Rejón Guardia Francisco , Calabuig Moreno Ferran 
Published: August 2018

Purpose
The purpose of this paper is to assess the influences and efficiency of a sports sponsorship in an online brand community.

Design/methodology/approach
The study was conducted through interviews with 609 social network users of a Spanish first league soccer team. The partial least squares (PLS) methodology was applied with a posteriori segmentation (PLS prediction-oriented segmentation (POS)).

Findings
The attitude toward the sponsor helps to assess the efficiency of sponsorships between companies. This variable is particularly relevant for evaluating sponsorship efficiency in online brand communities. Improving trust and assessing the sense of membership directly improves attitudes toward the team and the sponsored brands. The attitude toward the sponsor has a direct and positive impact on the purchase intentions. The use of a posteriori segmentation with the PLS–POS technique helps discriminate between groups.

Research limitations/implications
Among the limitations encountered, further study would require using a sample of various sports disciplines and cultures.

Practical implications
Specific actions and communication strategies are defined for each segment and in general to adapt communication strategies that improve identification with virtual brand communities. The study has revealed involvement-related differences resulting from the impact that engagement with the sponsored team may have on the assessed relationships.

Originality/value
The study of the effects of sponsorship and the use of a posteriori variables user segmentation in an online brand community are used.
Minimizing the risk of seaport operations efficiency reduction affected by vessel arrival delay
Authors: Wang Zhengxu , Guo Chonghui 
Published: August 2018

Purpose
In seaport industries, vessel arrival delay is inevitable because of numerous factors, e.g. weather, delay due to the previous stop, etc. The period of delay can be as short at 15 min of as long as a few days. This causes disruption to the planned sea operation operations, and more importantly, to the resources utilization. In traditional berth allocation and quay crane assignment problems (BA-QCA), the risk of vessel arrival delay has not been considered. Accordingly, the purpose of this paper is to employ a proactive planning approach by taking into consideration the vessel arrival delay into the optimization of BA-QCA problems.

Design/methodology/approach
In the existing BA-QCA problems, vessel arrival time is usually deterministic. In order to capture the uncertainties of arrival delay, this paper models the arrival time as a probability distribution function. Moreover, this paper proposes to model the delay risk by using the period between the expected arrival time and the expected waiting time of a vessel. Lastly, the authors propose a new modified genetic algorithm and a new quay crane assignment heuristic to maximize the schedule reliability of BA-QCA.

Findings
A number of numerical experiments are conducted. First of all, the optimization quality of the proposed algorithm is compared with the traditional genetic algorithm for verifying the correctness of the optimization approach. Then, the impact of vessel arrival delay is tested in different scenarios. The results demonstrate that the impact of vessel arrival delay can be minimized, especially in the situations of high vessel to potential berth ratio.

Research limitations/implications
The proposed vessel arrival modeling approach and the BA and QCA approach can increase the operations efficiency of seaports. These approaches can increase the resource utilization by reducing the effect of vessel arrival delay. In other words, this can improve the throughput of seaport terminals.

Originality/value
This paper proposes to minimize the delay risk based on the conditional probability of the vessel completion time based on the previous vessel at the assigned berth. This modeling approach is new in literature.
Creativity, bravery and the need for agencies to adapt to the challenge of technology
Authors: Abdulkarim Jehan 
Published: August 2018

Purpose
The purpose of this paper is to address the relationship between organizations and their communication agencies. The paper argues that the relationship is symbiotic; both parties have to understand the importance of adapting their engagement with one another, especially if they hope to produce brand work that is impactful for target audiences and highlights the value of good communications and marketing to leadership.

Design/methodology/approach
The views expressed in this practice paper are based on the author’s extensive experience in the communications sector in the Middle East.

Findings
The paper highlights the importance of human creativity in communication campaigns, the need for bravery in marketing communications, and the need to adapt to technology. The best client/agency relationships combine the right degree of closeness and distance that allows agencies to be passionate advocates for the client while also being honest on stakeholder reactions. But, honesty requires courage. Telling a client what they need to hear and putting aside the fear of upsetting those who pay the bills in the search for the most effective creative idea takes nerve. Finally, the greatest change to the practice of communication is technology.

Originality/value
Although the relationship between clients and their communications agencies has been a topic of interest, much of the focus has been on the bottom line. This has been attributed to multiple reasons such as increased digital focus, or a belief among many brands that developing in-house capabilities provides better returns on investment. This practice paper addresses the agency–client relationship from a different perspective arguing for a symbiotic relationship built on creativity, honesty, bravery and the need to adapt to technology.
Opportunities and challenges of foreign direct investment utilisation and its impact on construction sector in developing countries
Authors: Babatunde Solomon Olusola , Awodele Oluwaseyi Alabi , Adeniyi Onaopepo 
Published: August 2018

Purpose
Foreign direct investment (FDI) inflows to both developed and developing countries have increased over the past three decades. However, investigation of opportunities and challenges associated with FDI on the host economy and its impact, especially on the construction sector through empirical assessment, have received scant attention. The purpose of this study is to address this gap in knowledge within the Nigerian context and examine the trend of FDI inflows to the construction sector for the period 2000-2013 inclusive. Relationships between contributions of the construction sector to Nigeria’s gross domestic product (GDP) are also studied.

Design/methodology/approach
The study adopted a literature review, a questionnaire survey and archival data culminated in data analysis. The survey targeted financial experts in Nigerian financial institutions/local banks. Archival data included the annualised data extracted from the Central Bank of Nigeria statistical bulletins. The period examined witnessed stable economic conditions. Data collected were analysed using mean score, factor analysis and correlation.

Findings
Eight identified opportunities of using FDI were grouped into three principal factors: knowledge spillovers, capital for new investment and resilience during financial crises. The ten identified FDI challenges were grouped into three major factors: loss of ownership advantage and additional costs, crowding-out of-national firms and administrative bottleneck and overdependence. Based on the hypotheses tested, the study found a significant relationship between the contributions of FDI inflows in the construction sector and the total GDP of the host country.

Practical implications
This study provides greater insight on the effects of FDI on a host economy in developing countries, which would help policymakers to examine existing policies and look for new ways of increasing foreign investment flow, especially in the area of Construction Facility Investment.

Originality/value
This study is important because it would enable policymakers in developing countries at large to promote FDI with special considerations for the construction sector of the economy.
Managerial learning challenges in a complex world
Authors: Abreu Pederzini Gerardo David 
Published: August 2018

PurposeManagers’ work is surrounded by complex environments, from which they need to learn, in order to understand them. However, complexity poses several challenges to managerial learning, for which usually management educational programs have not prepared managers. Thus, the purpose of this paper is to explore such challenges and possible ways to overcome them.Design/methodology/approachThis is a conceptual paper that explores in depth the issue of managerial learning challenges in a complex world. Managers face these challenges during their practice, yet sometimes management education has not prepared them for this.FindingsThree managerial learning challenges due to complexity are identified. First, through cognition and cognitive structures, managers simplify the world around them. Nevertheless, biases, inertia and inaccuracy emerge, as managers’ mental models are not truly capable of capturing complexity. Second, managers look for information to aid them in their learning processes, but the information they gather is sometimes bogus, invalid or unfounded. Third, managers could seek for support from management research to improve their learning. However, given management research intricacies, limitations and particularities, a learning challenge emerges as well, as management research has been rarely capable to capture complexity.Originality/valueHaving explored these managerial learning challenges due to complexity, this paper discusses a carefulness-based management learning ideal, which by being underpinned by the quality of carefulness and the related concepts of critical thinking, negative capability and a deep learning style, suggests a potential new way to approach management learning in light of complexity.
Exploring social media use in university crisis communication: An experiment to measure impact on perceived crisis severity and attitudes of key publics
Authors: Hong Seoyeon , Kim Bokyung 
Published: August 2018

This study seeks to investigate the impact of an exposure to a university's social media on publics’ perceptions during a crisis. Data from this study showed that participants (N = 269) expressed more favourable evaluations towards the university and their perceived severity was mitigated after viewing its official statement on university's Facebook posts. The results of this empirical research offer a meaningful suggestion to crisis communication scholars and practitioners interested in assessing the impact of universities’ statements in social media by providing ways to understand the importance of the organizational usage of social media during a crisis, why that is important, and why practitioners should make effective social media communication tactics a priority during a crisis.
Correlation between radiomic features based on contrast‐enhanced computed tomography images and Ki‐67 proliferation index in lung cancer: A preliminary study
Authors: Zhou Bodong , Xu Jie , Tian Ye , Yuan Shuai , Li Xubin 
Published: August 2018

BackgroundThe purpose of the study was to investigate the association between radiomic features based on contrast‐enhanced multidetector computed tomography (CT) and the Ki‐67 proliferation index (PI) in patients with lung cancer.MethodsOne hundred and ten patients with lung cancer confirmed by surgical histology were retrospectively included. Radiomic features were extracted from preoperative contrast‐enhanced chest multidetector CT images for each tumor using open‐source three‐dimensional Slicer software. Statistical analysis was performed to determine significant radiomic features serving as image predictors of Ki‐67 status in lung cancer and to investigate the relationship between these features and Ki‐67 PI.ResultsHigher Ki‐67 expression was more common in men (P = 0.02) and patients with a smoking history (P = 0.01). Twelve radiomic features were significantly associated with Ki‐67 status. Multivariate logistic regression analysis identified inverse variance, minor axis, and elongation as independent predictors of Ki‐67 PI. There was a positive correlation between inverse variance, minor axis, elongation (P = 0.00, P = 0.02, and P = 0.14, respectively) and Ki‐67 PI. The area under the curve to identify high Ki‐67 status for inverse variance was 0.77 with a cutoff value of 0.47, which was significantly higher than for minor axis and elongation (P = 0.02 and P = 0.03, respectively).ConclusionRadiomic features based on contrast CT images, including inverse variance, minor axis, and elongation, can serve as noninvasive predictors of Ki‐67 status in patients with lung cancer. Inverse variance could be superior to the other radiomic features to identify high Ki‐67 status.
Spillover Effects of Internal Control Weakness Disclosures: The Role of Audit Committees and Board Connections
Authors: Cheng Shijun , Felix Robert , Indjejikian Raffi 
Published: August 2018

ABSTRACTWe find that firms are less likely to report an internal control material weakness (as mandated by the Sarbanes‐Oxley Act) in a given year if one of their audit committee members is concurrently on the board of a firm that disclosed a material weakness within the prior three years. We find a similar spillover effect for financial restatement disclosures. The spillover from material weakness disclosures is evident only if a shared director has more experience with the disclosing firm or can channel more information about the disclosed material weakness. Our findings suggest that prior director experiences outside the firm influence the work of audit committees inside the firm. One rationale is that a director's prior experience with an adverse disclosure helps diffuse important insights and serves as a catalyst for improvements in a firm's internal control and financial reporting practices. An alternative explanation, which we cannot dismiss, holds that a director's prior experience helps a firm to underreport material weaknesses and financial restatements without any attendant improvements in the underlying practices.
Transparency, Information Shocks, and Tax Avoidance
Authors: Kerr Jon N. 
Published: August 2018

ABSTRACTThis study helps provide clarity to the prior mixed findings on the association between financial reporting transparency and tax avoidance by studying the effect that transparency has on tax avoidance in a cross‐country sample through aggregate‐ and firm‐level tests. Results using firm‐ and country‐level (aggregate) measures of transparency and tax avoidance show that countries and firms with greater levels of transparency exhibit lower levels of tax avoidance and that the effect of country‐level transparency is incremental to firm‐level transparency. Furthermore, results of difference‐in‐difference tests using the adoption of IFRS and the initial enforcement of insider trading laws around the world as exogenous shocks that increase transparency find that transparency has a statistically and economically significant effect on tax avoidance and address empirical concerns regarding endogeneity and reverse causality not fully addressed in the prior research. The results of these tests as well as tests that address potential correlated but omitted variables suggest that financial transparency is an important tool which regulators can use in battling tax avoidance.
Impact of Medical Scribes on Provider Efficiency in the Pediatric Emergency Department
Authors: Addesso Luke C. , Nimmer Mark , Visotcky Alexis , Fraser Raphael , Brousseau David C. 
Published: August 2018

AbstractObjectivesToday's emergency department (ED) providers spend a significant amount of time on medical record documentation, decreasing clinical productivity. One proposed solution is to utilize medical scribes who assist with documentation. We hypothesized that scribes would increase provider productivity and increase provider satisfaction without affecting patient experience or nursing satisfaction.MethodsWe conducted an observational pre‐post study comparing ED prescribe and postscribe clinical productivity metrics for 18 pediatric emergency medicine physicians, two general pediatricians, and two nurse practitioners working in the 12‐bed nonurgent area of the pediatric ED. Productivity metrics included patients per hour (pts/hr), work relative value units per hour (wRVUs/hr), and visit duration measured for 1 year pre‐ and postscribe implementation. Cross‐sectional satisfaction surveys were administered to patient families, providers, and nurses during the initial scribe rollout.ResultsOverall, 24,518 prescribe and 27,062 postscribe visits were analyzed. Following scribe implementation, overall provider efficiency increased by 0.24 pts/hr (11.98%, p < 0.001) and 0.72 wRVUs/hr (20.14%, p < 0.001). The largest efficiency increase (0.36 pts/hr, 0.96 wRVUs/hr) occurred in January–March, when ED census peaked. Patient visit duration was 53 minutes in both the prescribe and the postscribe periods. During initial scribe implementation, 80% of parents of patients without a scribe rated the visit as very good/great compared to 84% with a scribe (p = 0.218). Of the 34 providers surveyed, 88% preferred working with a scribe. A majority of providers (82%) felt that their skills were used more effectively when working with a scribe, decreasing their likelihood of experiencing burnout. Of the 43 nurses surveyed, 51% preferred scribes and 47% were indifferent.ConclusionsMedical scribes increased ED efficiency without decreasing patient satisfaction. Providers strongly favored the use of scribes, while nurses were indifferent. The next steps include a cost analysis of the scribe program.
Close‐distance courtship of laboratory reared Bactrocera tryoni (Diptera: Tephritidae)
Authors: Ekanayake Wasala M T D , Clarke Anthony R , Schutze Mark K 
Published: August 2018

AbstractClose‐range courtship behaviours are a critical element of a species' biology but, if rapid, can often be overlooked. Beyond male chemical and audio calling, close‐range courtship interactions leading to copulation in the Queensland fruit fly Bactrocera tryoni are unknown; this may be due to a true absence or because they have been overlooked and not previously investigated. We sought to resolve the close‐range courtship sequence of B. tryoni and construct an ethogram of identified behaviours. Close‐range video recordings of B. tryoni courtship were taken during the dusk mating window and an ethogram constructed by combining all observed behaviours which led to successful copulation and unsuccessful copulation. While the previously well‐recognised male wing fanning behaviour was documented, a number of other behaviours were identified for the first time in B. tryoni courtship, including female ovipositor extension, and both male and female synchronous supination, face‐to‐face contact, and fore‐ and hind leg interactions. Analyses showed that the total duration of male synchronous supination, but not the number of occurrences, differed significantly between successful and unsuccessful males. Male foreleg interaction with the female abdomen was significantly different in both total duration and total number of occurrences between successful and unsuccessful males. The results reinforce data obtained from other Bactrocera species of simplified courtship sequences in these flies in comparison with other tephritid genera, but nevertheless courtship is more complex than previously recognised.