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This paper aims to present an investigation into the variation of scan vector hatch rotation strategies in selective laser melting (SLM), focussing on how it effects density, surface roughness, tensile strength and residual stress.

First the optimum angle of hatch vector rotation is proposed by analysing the effect of different increment angles on distribution of scan vectors. Sectioning methods are then used to determine the effect that the chosen strategies have on the density of the parts. The top surface roughness was analysed using optical metrology, and the tensile properties were determined using uni-axial tensile testing. Finally, a novel multi-support deflection geometry was used to quantify the effects of rotation angles on residual stress.

The results of this research showed that the hatch rotation angle had little effect on the density, top surface roughness and strength of the parts. The greatest residual stress deflection was measured parallel to unidirectional scan vectors. The use of hatch rotations other than alternating 90° showed little benefit in lowering the magnitude of residual stresses. However, the use of rotation angles with a good suitability measure distributes stresses in all directions more evenly for certain part geometries.

All samples produced in this work were made from commercially pure titanium, therefore care must be taken when applying these results to other materials.

This paper serves to increase the understanding of SLM scanning strategies and their effect on the properties of the material.

The purpose of this paper is to understand how illusion of control (IOC) can affect the implementation of formal processes of environmental scanning in organizations.

Based on the proposed research question, an exploratory study was chosen, which could collaborate with future studies. There were conducted three semi-structured interviews with CEOs working in medium/large technology companies.

Behavioral traits were identified—such as overconfidence and underestimation of risks—which are directly related to the IOC’s theory. The belief that there is no added value to the company in adopting organizational strategic processes—such as environmental scanning—answers the research question and contributes to the development of new studies.

This study has as limitation the fact that it proposed the interviews to an inexpressive number of respondents, exclusively with the intention to explore better the relation between the IOC and the formal processes of environmental scanning.

This research advances the understanding of the difficulty in adopting formal environmental scanning practices in organizations. It can also help understand the motivations of executives for adopting (or not adopting) such practices. Finally, it is possible to know and understand the individual approach to environmental scanning, as well as its limitations.

This research discusses the themes of IOC and environmental scanning, demonstrating how cognitive factors can affect strategic decision making in an organization. Although the IOC is well-developed in the field of psychology, it can be very helpful in understanding business management and executive behavior.

This study aims to propose and evaluate the progress in the basic-pixel (a strategy to generate continuous trajectories that fill out the entire surface) algorithm towards performance gain. The objective is also to investigate the operational efficiency and effectiveness of an enhanced version compared with conventional strategies.

For the first objective, the proposed methodology is to apply the improvements proposed in the basic-pixel strategy, test it on three demonstrative parts and statistically evaluate the performance using the distance trajectory criterion. For the second objective, the enhanced-pixel strategy is compared with conventional strategies in terms of trajectory distance, build time and the number of arcs starts and stops (operational efficiency) and targeting the nominal geometry of a part (operational effectiveness).

The results showed that the improvements proposed to the basic-pixel strategy could generate continuous trajectories with shorter distances and comparable building times (operational efficiency). Regarding operational effectiveness, the parts built by the enhanced-pixel strategy presented lower dimensional deviation than the other strategies studied. Therefore, the enhanced-pixel strategy appears to be a good candidate for building more complex printable parts and delivering operational efficiency and effectiveness.

This paper presents an evolution of the basic-pixel strategy (a space-filling strategy) with the introduction of new elements in the algorithm and proves the improvement of the strategy’s performance with this. An interesting comparison is also presented in terms of operational efficiency and effectiveness between the enhanced-pixel strategy and conventional strategies.

The purpose of this paper is to investigate the effect of remelting each layer on the homogeneity of nickel-titanium (NiTi) parts fabricated from elemental nickel and titanium powders using laser powder bed fusion (LPBF). In addition, the influence of manufacturing parameters and different melting strategies, including multiple cycles of remelting, on printability and macro defects, such as pore and crack formation, have been investigated.

An LPBF process was used to manufacture NiTi alloy from elementally blended powders and was evaluated with the use of a remelting scanning strategy to improve the homogeneity of fabricated specimens. Furthermore, both single melt and up to two remeltings were used.

The results indicate that remelting can be beneficial for density improvement as well as chemical and phase composition homogenization. Backscattered electron mode in scanning electron microscope showed a reduction in the presence of unmixed Ni and Ti elemental powders in response to increasing the number of remelts. The microhardness values of NiTi parts for the different numbers of melts studied were similar and ranged from 487 to 495 HV. Nevertheless, it was observed that measurement error decreases as the number of remelts increases, suggesting an increase in chemical and phase composition homogeneity. However, X-ray diffraction analysis revealed the presence of multiple phases regardless of the number of melt runs.

For the first time, to the best of the authors’ knowledge, elementally blended NiTi powders were fabricated via LPBF using remelting scanning strategies.

This study aims to provide a comprehensive overview of the current state of the art in powder bed fusion (PBF) techniques for additive manufacturing of multiple materials. It reviews the emerging technologies in PBF multimaterial printing and summarizes the latest simulation approaches for modeling them. The topic of “multimaterial PBF techniques” is still very new, undeveloped, and of interest to academia and industry on many levels.

This is a review paper. The study approach was to carefully search for and investigate notable works and peer-reviewed publications concerning multimaterial three-dimensional printing using PBF techniques. The current methodologies, as well as their advantages and disadvantages, are cross-compared through a systematic review.

The results show that the development of multimaterial PBF techniques is still in its infancy as many fundamental “research” questions have yet to be addressed before production. Experimentation has many limitations and is costly; therefore, modeling and simulation can be very helpful and is, of course, possible; however, it is heavily dependent on the material data and computational power, so it needs further development in future studies.

This work investigates the multimaterial PBF techniques and discusses the novel printing methods with practical examples. Our literature survey revealed that the number of accounts on the predictive modeling of stresses and optimizing laser scan strategies in multimaterial PBF is low with a (very) limited range of applications. To facilitate future developments in this direction, the key information of the simulation efforts and the state-of-the-art computational models of multimaterial PBF are provided.

Prior research has reported the indirect implications of firm's dynamic capabilities on their competitive firm performance. Our attention now turns to open innovation since it has been confirmed to be an influential factor contributing to the superior performance of technological firms. So far there has been little research on assessing the relationship between a firm's dynamic capabilities as an antecedent of the competitive performance of the firm or investigations into the mediating role of open innovation in this relationship.

Drawing on the theory of dynamic capabilities, we developed a framework as a way to better understand the role of open innovation, which could then help to better explain the relationship between firms' dynamics capabilities and their competitive firm performance. Based on the empirical data of 465 firms operating in innovative and non-innovative industries, we employed structural equation modelling (SEM) to examine the research hypotheses and the path relationships in the proposed model.

The SEM analysis revealed that a firm's dynamic capabilities significantly impact its open innovation performance and that open innovation, consequently, impacts the competitive performance of the firm. Moreover, the results show that the path between dynamic capabilities and competitive firm performance is partially mediated through open innovation.

The findings provide practical implications and draw managerial attention to the importance of: (1) investing in innovation, (2) engaging customers in the innovation process and (3) maintaining innovation management excellence as significant antecedent factors in increasing competitive firm performance.

Considering the lack of empirical research in the literature on the links between dynamic capabilities and open innovation, this paper contributes to the dynamic capabilities and open innovation literature by confirming that open innovation not only mediates the relationship between these two aspects but also strengthens the effect the dynamic capabilities have on competitive firm performance. Besides, due to the significant impact of dynamic capabilities on open innovation, dynamic capabilities might be regarded as an antecedent of open innovation.

Most teachers in the Gulf would agree that Arab learners struggle more with reading and writing than listening and speaking. One little considered possible influence on this is the particular visual processing requirements of English. This article suggests why visual processing or visual cognition might be a particular difficulty for Arab students reading English. It offers a simple classroom checklist that may assist teachers to notice if visual processing strain could be effecting their student’s attention, motivation and performance.

Applying conservatism to the preparation of financial statements has been considered not only as a natural mechanism to protect the interests of the stockholders but also as a practical way to assist managers to deal with uncertainty in business environments. This study aimed to determine if increasing uncertainty can lead to raising the level of conservatism used in preparing financial statements. The result of the study could provide a better understanding of the factors that influence the level of applying conservative methods in accounting and financial reporting.

The model introduced by Basu (1997) was used to measure accounting conservatism. Business strategy and alertness were considered as two proxies for classifying companies according to their level of uncertainty. By adding each proxy of uncertainty to the model and using the financial data of 183 companies for five years (from 2013 to 2018), the multiple regression models were estimated through EViews. It was assumed that inert companies and those with prospector strategy face a higher level of uncertainty. Consequently, they were expected to report their financial status conservatively.

Findings revealed that companies, which adopted a prospector strategy, applied more conservative methods in their financial reports. This indicated that facing wider uncertainty results in reporting more conservatively, which could not be said about inert companies.

The current research is the first research undertaken in a developing country such as Iran, and the study's results may benefit other developing countries.

The purpose of this paper is to develop an effective process to market high-rise luxury condominiums in a middle-income country in Asia like Sri Lanka, based on empirical evidence.

The case research methodology used to address the four research issues used multiple sources of data. In stage 1, qualitative data were collected in interviews with managers and salespersons of six condominium developments that ranged from successful to failure. In stage 2, quantitative data were collected in a survey of the buyers of the six cases.

The authors contributions to knowledge include the first evidence-based findings about what influences the success and failure of high-rise luxury condominium developments in a country like Sri Lanka. In addition, a comprehensive marketing model of an effective marketing process is developed for forward-thinking professionals in the field to use to successfully market their luxury high-rise condominiums projects in the future.

Detailed steps for successful marketing are outlined, from the Board of Management down to salespersons.

This is the first academic research paper to examine the effective marketing of high-rise luxury condominiums in a middle-income country like Sri Lanka.

The business intelligence (BI) research witnessed a proliferation of contributions during the past three decades, yet the knowledge about the interdependencies between the BI process and organizational context is scant. This has resulted in a proliferation of fragmented literature duplicating identical endeavors. Although such pluralism expands the understanding of the idiosyncrasies of BI conceptualizations, attributes and characteristics, it cannot cumulate existing contributions to better advance the BI body of knowledge. In response, this study aims to provide an integrative framework that integrates the interrelationships across the BI process and its organizational context and outlines the covered research areas and the underexplored ones.

This paper reviews 120 articles spanning the course of 35 years of research on BI process, antecedents and outcomes published in top tier ABS ranked journals.

Building on a process framework, this review identifies major patterns and contradictions across eight dimensions, namely, environmental antecedents; organizational antecedents; managerial and individual antecedents; BI process; strategic outcomes; firm performance outcomes; decision-making; and organizational intelligence. Finally, the review pinpoints to gaps in linkages across the BI process, its antecedents and outcomes for future researchers to build upon.

This review carries some implications for practitioners and particularly the role they ought to play should they seek actionable intelligence as an outcome of the BI process. Across the studies this review examined, managerial reluctance to open their intelligence practices to close examination was omnipresent. Although their apathy is understandable, due to their frustration regarding the lack of measurability of intelligence constructs, managers manifestly share a significant amount of responsibility in turning out explorative and descriptive studies partly due to their defensive managerial participation. Interestingly, managers would rather keep an ineffective BI unit confidential than open it for assessment in fear of competition or bad publicity. Therefore, this review highlights the value open participation of managers in longitudinal studies could bring to the BI research and by extent the new open intelligence culture across their organizations where knowledge is overt, intelligence is participative, not selective and where double loop learning alongside scholars is continuous. Their commitment to open participation and longitudinal studies will help generate new research that better integrates the BI process within its context and fosters new measures for intelligence performance.

This study provides an integrative framework that integrates the interrelationships across the BI process and its organizational context and outlines the covered research areas and the underexplored ones. By so doing, the developed framework sets the ground for scholars to further develop insights within each dimension and across their interrelationships.