Search results
1 – 10 of over 51000Juho Ylimäki and Jukka Vesalainen
The purpose of this study is to build a generic model for relational development of a value proposition for a service concept. The study seeks to answer two questions: First, what…
Abstract
Purpose
The purpose of this study is to build a generic model for relational development of a value proposition for a service concept. The study seeks to answer two questions: First, what kind of process is practical for joint development of a service concept in customer–service provider collaboration? Second, what are the functional principles for such collaboration?
Design/methodology/approach
A participative, design science approach was used to develop the model for a joint-development process. Researchers developed and analyzed joint activities between a provider of industrial maintenance service solutions and its customer during the process of co-developing a service concept for factory maintenance.
Findings
The study suggests that a co-development process has to integrate service blueprinting, a stage-gate philosophy, dialogical interaction principles and elements of joint learning to meet the requirement for both efficiency and relationality.
Research limitations/implications
The study develops a generic model for collaborative development of value propositions that integrates the aforementioned elements of separate streams of research. Applying the developed model to different contexts would further verify and enhance it.
Practical implications
The model can be applied to the development of a value proposition in different collaborative development situations to enhance interplay between efficiency and relationality.
Originality/value
The study illustrates a generic model for joint service concept development and proposes a solution balancing contradictory requirements in such a collaboration.
Details
Keywords
Shifa Sulaiman and A.P. Sudheer
Most of the redundant dual-arm robots are singular free, dexterous and collision free compared to other robotic arms. This paper aims to analyse the workspace of redundant arms to…
Abstract
Purpose
Most of the redundant dual-arm robots are singular free, dexterous and collision free compared to other robotic arms. This paper aims to analyse the workspace of redundant arms to study the manipulability. Furthermore, multi-layer perceptron (MLP) algorithm is used to determine the various joint parameters of both the upper body redundant arms. Trajectory planning of robotic arms is carried out with the help of inverse solutions obtained from the MLP algorithm.
Design/methodology/approach
In this paper, the kinematic equations are derived from screw theory approach and inverse kinematic solutions are determined using MLP algorithm. Levenberg–Marquardt (LM) and Bayesian regulation (BR) techniques are used as the backpropagation algorithms. The results from two backpropagation techniques are compared for determining the prediction accuracy. The inverse solutions obtained from the MLP algorithm are then used to optimize the cubic spline trajectories planned for avoiding collision between arms with the help of convex optimization technique. The dexterity of the redundant arms is analysed with the help of Cartesian workspace of arms.
Findings
Dexterity of redundant arms is analysed by studying the voids and singular spaces present inside the workspace of arms. MLP algorithms determine unique solutions with less computational effort using BR backpropagation. The inverse solutions obtained from MLP algorithm effectively optimize the cubic spline trajectory for the redundant dual arms using convex optimization technique.
Originality/value
Most of the MLP algorithms used for determining the inverse solutions are used with LM backpropagation technique. In this paper, BR technique is used as the backpropagation technique. BR technique converges fast with less computational time than LM method. The inverse solutions of arm joints for traversing optimized cubic spline trajectory using convex optimization technique are computed from the MLP algorithm.
Details
Keywords
FUAD MRAD, M. ASEM ABDUL‐MALAK, SALAH SADEK and ZIAD KHUDR
Robotic industrial applications are very well established in the manufacturing industry, while they are relatively in their infancy phase in the construction sector. The need for…
Abstract
Robotic industrial applications are very well established in the manufacturing industry, while they are relatively in their infancy phase in the construction sector. The need for automation in construction is clear especially in repetitive tasks. The excavation process, which is generally critical in most construction projects, is a prime example of such tasks. This paper addresses automation assistance in excavation. The work utilized the robotics approach towards the automation of a typical excavator model, whose structure closely resembled that of an industrial manipulator. A simulation package using Matlab was developed using several embedded design and analysis tools. Emulation was also carried out on the RHINO educational robot to confirm the simulation results. The constructed simulation package offered an integrated environment for trajectory design and analysis for an excavator while addressing the constraints related to the excavator structure, safety and stability, and mode of application.
Details
Keywords
Christopher Ansell, Eva Sørensen and Jacob Torfing
This chapter looks at how Goal 17 on partnerships can be a lever of change. It discusses the partnership approach to achieving the SDGs and unravels the key functions of networks…
Abstract
This chapter looks at how Goal 17 on partnerships can be a lever of change. It discusses the partnership approach to achieving the SDGs and unravels the key functions of networks and partnerships, such as knowledge sharing, coordination, and collaborative governance. It carefully explains why we need to shift the focus of the global debate from collaborative governance to the cocreation of public value outcomes. It then provides a schematic account of the different steps in the process of cocreating outcomes, which include initiation, design, implementation, and evaluation. Finally, the chapter identifies the key merits of cocreation and looks its dark side straight in the eye.
Details
Keywords
Abstract
Purpose
The purpose of this paper is to present the design and implementation of a new manipulator with six joints driven by a single DC motor.
Design/methodology/approach
The manipulator consists of several modules, each of which has the twisting and pivoting degrees of freedom. Two clutches and one brake are mounted to control each joint. A clutch model based on PWM control is built to compute the average velocity of each clutch. Two parameters are involved in the model: PWM frequency and duty ratio. PWM frequency is limited by the natural frequencies of structure with all postures. The theoretical duty ratio should be adjusted according to the clutch model. Two experiments – line tracking and arc tracking – are carried out to verify the effectiveness of the control system.
Findings
The study has designed a manipulator with six joints driven by a single DC motor which powers all the modules through a main shaft and several clutches. In the manipulator, all the modules are supplied with a constant speed input and provide a bi‐directional variable output. Experimental results show the clutch model built for the manipulator can be applied to the joint control of all multi‐joint manipulators.
Originality/value
The paper describes a dexterous and light‐weight manipulator driven by a single motor and designed with bi‐directional joints.
Details
Keywords
Christopher Ansell, Eva Sørensen and Jacob Torfing
This chapter explores how conveners can use stakeholder analysis to bring together and align relevant and affected actors in cocreation partnerships. Next, it considers how…
Abstract
This chapter explores how conveners can use stakeholder analysis to bring together and align relevant and affected actors in cocreation partnerships. Next, it considers how conveners can deal with the limits to the inclusion of all relevant and affected actors. Reflections on the relation between inclusion and exclusion of actors are followed by a discussion of how conveners can empower weak, vulnerable, and inexperienced participants. Empowered actors must be motivated to participate in complex and demanding cocreation processes. The key motivator is to be found in the efforts of conveners and facilitators to clarify, strengthen, and create resource interdependence between the participants. The last section looks at the emergence of different kinds of conflicts and the role of conveners and facilitators in mediating conflicts that threaten to jeopardize the cocreation process.
Details
Keywords
Many modern microeconomic theory textbooks similarly conclude that the bilateral monopoly equilibrium price and quantity are theoretically indeterminate given the usual…
Abstract
Many modern microeconomic theory textbooks similarly conclude that the bilateral monopoly equilibrium price and quantity are theoretically indeterminate given the usual assumptions of the theory of the firm; they usually state that additional assumptions about bargaining power or firm behaviour are required for a determinate solution. The past literature on bilateral monopoly generally supports the textbook position with respect to price but not with respect to quantity. For example, von Stackelberg (1952, 182–9) and Fellner (1947, 523–8) argued that quantity is determinate at the joint profit maximizing level for bilateral monopoly between profit maximizing firms which employ “all or none” offers; price, however, must still be determined by relative bargaining power which is unspecified.
Jan Halvor Natlandsmyr and Jørn Rognes
Previous research on international negotiations has primarily examined cross‐cultural differences in behavioral styles. Supplementing this prior research, we focused on outcome in…
Abstract
Previous research on international negotiations has primarily examined cross‐cultural differences in behavioral styles. Supplementing this prior research, we focused on outcome in negotiations. The study examined relationships between culture and outcome in contract negotiations, and analyzed how negotiation behavior mediates between culture and outcome. Sixty Mexican and Norwegian subjects participated in a negotiation simulation with potentially integrative outcomes. The study included 12 Mexican dyads, 12 Norwegian dyads, and 6 cross‐cultural dyads. Two aspects of outcome: joint benefit and distribution of benefit between negotiators, and two aspects of process: progression of offers and verbal communication, were examined Results indicated an effect of culture on integrative results, but not on distribution of benefit. Process differences found were related to the progression of offers over time, and not to verbal communication. Managerial implications are discussed and directions for future research indicated.
Jill M. Purdy and Barbara Gray
This study evaluates an attempt to develop a mediation program within a state environmental agency. A number of concerns arose during the agency's efforts to use mediation…
Abstract
This study evaluates an attempt to develop a mediation program within a state environmental agency. A number of concerns arose during the agency's efforts to use mediation, including the neutrality of mediators, the types of cases mediated, the voluntary participation of parties, and acceptance of the mediated agreement. These issues were examined through a case study of a conflict that was mediated by the agency. Based on issues in the case, criteria are suggested which help guard against the problems that arise when government agencies serve a mediating role. These criteria may be useful to any organization that contemplates using mediation to help resolve conflict.
David Ford, Lars-Gunnar Mattsson and Ivan Snehota
The issue dealt with in this chapter is the role of management in developing and maintaining business relationships among companies. Interdependent business network structures…
Abstract
The issue dealt with in this chapter is the role of management in developing and maintaining business relationships among companies. Interdependent business network structures result from interactions in dyads between single actors and interactions among all involved actors collectively. Managers as ‘architects and constructors’ of business relationships, involved directly in developing the relationships between customers and suppliers, are mostly middle-management positions rather than top management. Purchasing managers, sales managers and technical managers are fundamental for the development of business relationships as they create value in business relationships. Relationships between companies cannot be developed unilaterally; they have to be developed jointly. Since value creation requires involvement of others, motivating other actors and mediating are fundamental in developing relationships and creating value. The effective development of business relationships of value hinges on the capability and skills of management to work with and through others, to relate to others and to cope with interdependencies that arise in relationships. However, the capability of a company to interact and create value in business relationships is not simply a sum of individual managerial skills; it is an issue of organising the interfaces in relationships to other business.
Details