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The purpose of this paper is to investigate the nonlinear dynamics of the aircraft assembly lines. An approach for modeling and analyzing the production rate of an aircraft assembly line is introduced using the chaos theory.

First, two key system variables including reliability and learning ability are considered to control the dynamics model. The discrete-time dynamics equation of the production rate is established as a function of the reliability and the learning rate. Then an improved Gauss-learning curve is proposed and applied to aircraft assembling condition. Finally, the bifurcation diagrams and the maximal Lyapunov exponents are used and applied to the experimental study to analyze the dynamic behavior under different combinations of parameters.

On the basis of the experimental study, it is shown that chaotic behavior really exists in the aircraft assembly lines. The reliability and the Gauss-learning curve can nonlinearly affect the production rate.

This paper applied nonlinear dynamics and chaotic theory to the production analyses of the aircraft assembly lines for the first time. The proposed model has been successfully applied to a practical case, and the result justifies its advantage as well as feasibility to both theory and engineering application.

This chapter analyzes the intersectionality of inequalities based on class, gender, sexual orientation, and gender identity within the Indignados (indignant or outraged people) movement of Spain. By analyzing the interpretative frames and organizational practices of the movement, we looked for influencing factors and the degree to which the movement has incorporated an intersectional perspective into its interpretative frames. Some of the frames did attend to the various inter-related forms of inequality. The factors influencing an intersectional perspective included: the presence of coexisting or inclusive forms of expressing the collective identity of the movement, mechanisms implemented to balance asymmetries among actors, and the confluence of three of the four dominant frames within the movement.

The purpose of this paper is to define the conditions for a failsafe coupling of parts when using adaptation and low-frequency vibrations. A model enables us to determine the reaction at the contact points of parts and time-based contact conditions changes. Therefore, the conditions of jamming parts can be defined in the process of conjugation.

A mathematical model describing the trajectory of the part mass center in robotic assembly is created. An experimental equipment is also presented in the paper. Convergence of theoretical and experimental results that characterize the reliability of processes is estimated.

The mathematical model of the connection process dynamics is found in the form of Lagrange’s equations of the second kind.

Applying low-frequency vibration and the adaptive gripper is proposed to extend technological capabilities of robotic assembly.

The purpose of this paper is to develop a systematic experimental investigation for testing dynamic behavior of plastic ball grid array (PBGA) integrity in electronic packaging and to investigate the dynamic behavior of PBGA assembly by considering fixed‐modes for design and reliability evaluation of PBGA packaging.

A PBGA assembly prototype with different structure and material parameters is designed and manufactured. The modal distribution under excitation cycling can be tested by hammering test. The dynamic test about the PBGA assembly prototype can be implemented with different structure characteristics, materials parameters and fixed‐modes. To illustrate the validity of experimental test, the numerical simulation for the dynamic behavior of the PBGA assembly prototype is developed by using finite element method. Comparison between the experimental results and simulation can illustrate the validity of the experimental test and finite element modeling each other.

The modal distribution test shows the influence of structure characteristics, materials parameters and fixed‐modes of PBGA assembly board. The changing trends of the dynamic modal characteristics during the dynamic excitation can be obtained with different structure characteristics, materials parameters and fixed‐modes of PBGA assembly. Test shows that the fixed location of the assembly board is the most important factor to influence the first frequency and modal deformation of the assembly board. Higher frequency and smaller deformation can be obtained when there are more constraints in printed circuit board.

The numerical model is a compendious model by predigesting structure. The research on more accurate mathematical model of the PBGA assembly prototype is a future work.

It can imply the dynamics of PBGA assembly. It builds a basis for future work for design and reliability evaluation of PBGA packaging.

This paper provides useful information about the dynamic behavior of PBGA assembly with different structure characteristics, materials parameters and fixed‐modes.

Over the past years, collaborative robots have been introduced as a new generation of industrial robotics working alongside humans to share the workload. These robots have the potential to enable human–robot collaboration (HRC) for flexible automation. However, the deployment of these robots in industrial environments, particularly in assembly, still comprises several challenges, of which one is skills-based tasks distribution between humans and robots. With ever-decreasing product life cycles and high-mix low volume production, the skills-based task distribution is to become a frequent activity. This paper aims to present a methodology for tasks distribution between human and robot in assembly work by complexity-based tasks classification.

The assessment method of assembly tasks is based on the physical features of the components and associated task description. The attributes that can influence assembly complexity for automation are presented. Physical experimentation with a collaborative robot and work with several industrial cases helped to formulate the presented method.

The method will differentiate the tasks with higher complexity of handling, mounting, human safety and part feeding from low-complexity tasks, thereby simplifying collaborative automation in HRC scenario. Such structured method for tasks distribution in HRC can significantly reduce deployment and changeover times.

Assembly attributes affecting HRC automation are identified. The methodology is presented for evaluating tasks for assigning to the robot and creating a work–load balance forming a human–robot work team. Finally, an assessment tool for simplified industrial deployment.

At the outset of this book, we argued that it was important that we study agricultural “policy regimes” rather than agricultural policy itself. Our reasoning was that our interest lies in the actual outcomes in terms of farming practice, industry arrangements, global trade linkages, technology assemblages, and agroecological relationships in particular countries and regions. It is a convenient fiction that these practices and arrangements are the direct result of the formal agricultural policy arrangements in each specific country. In reality, the formal policy process in each country (including not only agriculture, but also, in some cases, rural, environmental, trade, and social development policy) can be argued to be in constant interaction with wider global politics, geographically specific environmental and cultural dynamics, prevailing farm practices, and new technologies. To recognize this full assembly of dynamics that coordinate to determine actual farm practice, we use the term “policy regimes.” In neoliberalized economies such as New Zealand, there is even a strong sense in which devolved governance at the industry and sector level now operates within these regimes in the same way that formal agricultural policy does in European countries.

This article explores aspects of separation from “post-traditional” religiosity characteristic of certain late/post-modern affiliations. To do so, I analyze in-depth interviews with 44 individuals who formerly identified with straightedge – a clean-living youth-oriented scene tightly bound with hardcore music that is centered on abstinence from intoxicants – about their experiences transitioning through associated music assembly rituals. While features of hardcore music assemblies – e.g. moshing, slamdancing, sing-a-longs – have long been treated as symbolic connections that potentially conjure the religious as conceptualized in Émile Durkheim's “effervescence” and the liminality of Victor Turner's “communitas,” data on transitions from these features of ritual remain scant. Ex-straightedgers generally believed the sorts of deep connections they professed to experience in hardcore rituals as youths were not necessarily currently accessible to them, nor were they replicable elsewhere. Findings then ultimately suggest some post-traditional religious experiences might now be profitably considered in terms of the life course, which has itself transformed alongside the proliferation of newer late/post-modern affiliations and communities.

This chapter uses the ritual economy approach to examine what can be called “liturgical” economic allocations, which are made by private individuals and can comprise a significant percentage of a society's total expenditures on public works. Such allocations are driven by tournaments of honor that emphasize highly visible acts and public evaluations of status, which turn on one's willingness to put at risk what is most highly valued in society. Unlike philanthropy, participation in these tournaments is necessary to achieve and maintain citizenship, but unlike taxation, where rates are imposed from above, what is given is determined by a complex social negotiation. The chapter argues that the relativity of honor gives such systems a particular dynamic, which is illustrated in several case studies.

The purpose of this paper is to determine the efficacy of lean learning as experienced and demonstrated by a group of students who were exposed to a purpose built simulated working environment (SWE). The study expands on previous research aimed at establishing the student views of the new type of training by including the perceptions of the industry mentors.

An SWE was developed to allow students to experience an assembly line environment and practice lean tools. The students’ perceptions of the learning process and the perceptions of their industry mentors were then measured to gauge the success of the programme.

Groups of students indicated that they believed their grasp of the basic lean concepts had been significantly enhanced through exposure to the SWE teaching exercises. The outcome of this initial study was endorsed by the findings of the second study that measured the perceptions of their industry mentors after a six-month experiential learning period.

The research covered in this paper reflects only the findings of these two groups as they progressed from the SWE-type training to industry-based experiential learning. It is acknowledged that expanded research would be beneficial to not only verify initial findings but also to refine the lean learning experienced in the simulated work environment.

The paper describes a lean learning process that is more effective than current processes and could therefore be universally utilised to enhance the lean learning experience in higher education.