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Component positioning is an important part of aircraft assembly, aiming at the problem that it is difficult to accurately fall into the corresponding ball socket for the ball head connected with aircraft component. This study aims to propose a ball head adaptive positioning method based on impedance control.

First, a target impedance model for ball head positioning is constructed, and a reference positioning trajectory is generated online based on the contact force between the ball head and the ball socket. Second, the target impedance parameters were optimized based on the artificial fish swarm algorithm. Third, to improve the robustness of the impedance controller in unknown environments, a controller is designed based on model reference adaptive control (MRAC) theory and an adaptive impedance control model is built in the Simulink environment. Finally, a series of ball head positioning experiments are carried out.

During the positioning of the ball head, the contact force between the ball head and the ball socket is maintained at a low level. After the positioning, the horizontal contact force between the ball head and the socket is less than 2 N. When the position of the contact environment has the same change during ball head positioning, the contact force between the ball head and the ball socket under standard impedance control will increase to 44 N, while the contact force of the ball head and the ball socket under adaptive impedance control will only increase to 19 N.

In this paper, impedance control is used to decouple the force-position relationship of the ball head during positioning, which makes the entire process of ball head positioning complete under low stress conditions. At the same time, by constructing an adaptive impedance controller based on MRAC, the robustness of the positioning system under changes in the contact environment position is greatly improved.

This research examines the effects of health, location, and other factors on receipt of wage income for young heads of households, aged 19 to 25, who lived in HUD-assisted housing and in other rental housing in 2011.

This chapter reports results of analyses of the 2011 American Housing Survey, merged with HUD administrative records, available as a public-use file at the U.S. Census Bureau.

Nineteen percent of young householders in assisted housing and 8% in other rental housing reported less than good health or a disability. Nearly two-thirds of young householders in assisted housing reported receipt of earned income. For respondents in assisted housing who reported good health and no disabilities, logistic regression models suggest that educational attainment beyond a high school diploma, more than one adult in the household, and living in metropolitan areas in the Midwest or West census regions were positively and statistically significant for receipt of earned income. For respondents in both assisted and other rental housing who reported less than good health and/or disabilities, residence in assisted housing or educational attainment beyond a high school diploma were positively associated with receipt of earned income, while residence in the metropolitan South lowered the odds of receipt of earned income.

Success of self-sufficiency programs will depend on accommodating the imperatives created by health, disability, and structural impediments created by a market economy.

This is the first analysis of health/disability and other barriers to paid employment that accurately identifies a nationally representative sample of young Millennials in HUD-assisted and other rental housing.

The purpose of this study is twofold. The first purpose is to inform faculty who are thinking of becoming a department head about the challenges they face if they choose to pursue a department head opportunity. The second purpose is to provide insight into the leadership of the accounting departments by looking at various workload aspects of department heads. The authors surveyed accounting department heads from programs with the Association to Advance Collegiate Schools of Business (AACSB) accounting accreditation, AACSB business only accreditation, and non-AACSB accreditation. Surveys were sent to 918 individuals listed as the leader of an accounting program in the 2016–2017 Hasselback Accounting Directory with 144 individuals responding (15.7% response rate). In addition to the workload of the department head in the areas of teaching, research, and service, the study analyzed the major challenges and difficulties the department head faces. The study also sought responses from survey participants on additional issues such as the benefits of AACSB accreditation and compensation.

The introduction of performance-related pay with performance management in the state school sector of England and Wales represents a considerable change in the school management system. After 2000, all teachers were subject to annual goal setting performance reviews. Experienced teachers were offered an extended pay scale based on performance instead of seniority, and to gain access to the new upper pay scale, teachers had to go through a ‘threshold assessment’ based on their professional skills and performance. This paper reports the results of a panel survey of classroom and head teachers which started in 2000 just before implementation of the new system, and then after one and after four years of operation. We find that both classroom and head teacher views have changed considerably over time, from initial general scepticism and opposition towards a more positive view, especially among head teachers by 2004. We argue that the adoption of an integrative bargaining approach to performance reviews explains why a growing minority of schools have achieved improved goal setting and improved pupil attainments as they have implemented performance management. Pay for performance has been one of the measures of organisational support that head teachers could bring to induce changes in teachers’ classroom priorities. We argue that the teachers’ case shows that a wider range of performance incentives than previously thought can be offered to employees in such occupations, provided that goal setting and performance measurement are approached as a form of negotiation instead of top-down.

We develop a concept of the global factory, first introduced by Buckley and colleagues (2004, 2009, 2010, 2011, 2014), as a stand-alone construct associated with significant predictive capacity, discuss dynamics of success of the global factory, and identify and analyze social mechanisms deployed by the lead firm head office.

We conceptualize the global factory as a form of a flagship network and augment internalization theory with insights from interorganizational networks research to explore the dynamics of the global factory’s origination and functioning.

We clarify under what conditions a global factory-type network is more likely to emerge and describe social mechanisms generated by the lead firm head office to help the global factory sustain itself and thrive. We argue that in order to benefit from potential efficiencies of the global factory, the lead firm head office must deploy combinations of social mechanisms. We further argue that the role of the lead firm head office is that of a joint value orchestrator and a social broker, in addition to the controlling intelligence function.

Future work on the global factory should include further conceptualization of social mechanisms deployed by the lead firm, exploration of operating mode heterogeneity within the global factory, and large-scale empirical research.

Lead firm managers should embrace the role of the joint value orchestrators and implement social mechanisms described in this chapter to facilitate smooth operation of the global factory.

Global factory governance further increases multinationals’ geographic reach and market power; yet, it is not a universal recipe for market success, and therefore global factories’ power to shape the global economy should not be overestimated.

By linking the global factory to networks literature, we have suggested a novel way to view the concept and articulated more fully its underlying assumptions. Further research on the global factory will help advance our understanding of the dynamics of the global economy and the role of multinationals, their head offices, and their managers in shaping the economy.