Wei Wang, Robert N.K. Loh and Edward Y. Gu
Industrial robots have found great potential in applications to assembly‐line automation. Programmable robot‐based assembly systems are often needed, in particular for…
Abstract
Industrial robots have found great potential in applications to assembly‐line automation. Programmable robot‐based assembly systems are often needed, in particular for circumstances in which special assembly equipments is not available or well‐trained operators could not be employed economically. Robots with enough compliance can perform not only classic automation tasks, such as spot welding, cargo carrying, etc., but also can operate those tasks which demand the compliant motion capacity of robots. Therefore, the research on robot compliance is especially important for parts assembly by robots, where robot compliant motions and manipulations are essential requirements. This paper presents a number of important issues in robot compliance research, including the specification of robot end‐effector compliance; properties of a robot compliance matrix at its end‐effector; discussions on passive compliance and active compliance and their comparisons; and derivation of the compliance at the end‐effector required for tasks.
Qingxia Wang, Robert Faff and Min Zhu
More studies have investigated the relation between option measures and stock returns during scheduled corporate events. This study adds to the literature and investigates the…
Abstract
Purpose
More studies have investigated the relation between option measures and stock returns during scheduled corporate events. This study adds to the literature and investigates the informational role of options concerning stock returns following unscheduled corporate news events. The authors focus on individual analysts' recommendation changes rather than consensus revisions, as the recommendation consensus might discard a large amount of potentially valuable information in the aggregation process.
Design/methodology/approach
Based on the econometric model, the authors follow Bakshi et al. (2003) to construct the model-free option implied measures. The authors further decompose the implied option variance into upside and downside components. In such a way, the different informational roles of call and put options can be distinguished. A variety of regression analyses are conducted to examine the predictive power of option implied measures, and the ordered probit model is used to test the tipping hypothesis of analyst recommendations.
Findings
This study’s results show that the option market impounds the “valuable” firm-specific news; thus, the pre-event option market is strongly related to stock returns around recommendations even though recommendation changes are largely “unscheduled”. At the same time, these results suggest that upside (good) and downside (bad) implied volatilities contain distinctive information on subsequent stock returns.
Originality/value
This study provides new evidence that an increase in upside (downside) volatility around analyst recommendation changes would increase the probability that analysts upgrade (downgrade) the stock. The findings provide implications for investors and risk managers in making investment decisions.
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Karl-Emanuel Dionne and Paul Carlile
Innovation challenges are increasingly complex, cutting across distributed actors from different disciplines, organizations, and fields. Solving such challenges requires creating…
Abstract
Innovation challenges are increasingly complex, cutting across distributed actors from different disciplines, organizations, and fields. Solving such challenges requires creating the capacities of opening up for innovation to access and develop a greater amount and variety of knowledge and resources. Perspectives on open source, open innovation, and interorganizational collaboration have explored such capacities, but from different origins and scopes of analysis. Our practice-based integrative framework of “opening innovation” helps highlight these differences and connect their relative strengths. Through a critical literature review paired with an analysis of different empirical cases from Hacking Health, a non-profit organization helping drive digital health innovation, the authors reveal the user-centric, firm-centric, and field-centric approaches to opening innovation that progressively connect a greater variety of actors and resources. The authors show how specific new relational practices they produce address the new relational dynamics these connections bring to accumulate more resources for innovation to keep progressing.
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Lovelin Ifeoma Obi, Mohammed Arif, Bankole Awuzie, Rubina Islam, Aman Deep Gupta and Robert Walton
Effective cost performance is a crucial criterion measuring successful project management in public-housing projects. This paper aims to analyse the vital underlying factors…
Abstract
Purpose
Effective cost performance is a crucial criterion measuring successful project management in public-housing projects. This paper aims to analyse the vital underlying factors surrounding the successful cost management process (CMP) outcomes in public housing projects (PHPs).
Design/methodology/approach
The research was conducted in three stages. The first stage consisted of a detailed literature review to document success factors affecting cost performances and management. In stage two, brainstorming sessions were undertaken with construction experts knowledgeable in cost management practices and have been involved in PHPs. These sessions were used to refine those success factors for the PHPs settings and define their criticality with respect to the CMP stages using interpretive ranking process. In stage three, focus group sessions were performed to validate the interrelationships of the contextualised critical success factors.
Findings
The top three most critical factors for successful implementation and outcomes at all CMP stages in PHPs settings were found to relate to competencies, team qualities and collaborative practices of the project team. Early contractor involvement and effective construction planning and management also emerged relevant to the process.
Practical implications
Government project departments, project managers and construction organisations (consultants and contractors) need to commit and mandate continuous development of cost management competencies for all professionals engaged in PHPs. Channels supporting team integration and collaborative practices between design and construction teams are required to increase the likelihood of successful project cost management practice and outcomes in PHPs.
Originality/value
The research has developed a factor-process relationship model that can be used to improve and evaluate the efficacy of CMP implementation in PHP settings.
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Amentahru Wahlrab, Sarah M. Sass and Robert Edward Sterken
“The Need to Disrupt Social Control” discusses three examples: sexual assault, civil rights, and state security, and how all three involve social control forces that promote or…
Abstract
“The Need to Disrupt Social Control” discusses three examples: sexual assault, civil rights, and state security, and how all three involve social control forces that promote or permit the oppression of individuals, groups, and societies. Amentahru Wahlrab, Sarah M. Sass, and Robert Edward Sterken Jr. briefly provide examples of how social control can be disrupted including #MeToo (sexual assault), the American Civil Rights Movement (civil rights), and the Arab Spring (authoritarian regimes) to illustrate how social control has been disrupted in these areas. The chapter illustrates how patriarchal norms allow for sexual assault by those with power within contexts, such as Hollywood, academia, business, and politics. Sexual assault survivors and bystanders often do not report instances of assault due to informal social norms permitting such actions and fear of personal and professional harm.
On a different level, the jail in the American south was one of the most feared institutions for African Americans. It was not uncommon for an African American to never return from what would be a night in the “drunk tank” for a white person. Black Americans stayed “in their place” due to the threat of the jail cell. Finally, the chapter details how tyrants use the full weight of state security forces, including the police and the military, to maintain their control. Fear of security forces is routinely encouraged by arrests, torture, and even disappearance (of people) at the hands of the security forces. “The Need to Disrupt Social Control” concludes that in these cases, social control maintains an oppressive order of some kind, thus social control is understood as a potential negative.