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1 – 8 of 8Guoda Chen, Huafeng Yang, Huiqiang Cao, Shiming Ji, Xi Zeng and Qian Wang
For the climbing rod object with large diameter variation and the need of obstacle crossing, this paper aims to propose a new embracing-type climbing robot named as EVOC-I robot.
Abstract
Purpose
For the climbing rod object with large diameter variation and the need of obstacle crossing, this paper aims to propose a new embracing-type climbing robot named as EVOC-I robot.
Design/methodology/approach
The design philosophy and structural scheme are introduced. The kinematic analysis of embracing and telescoping mechanisms is carried out to provide the theoretical foundation for the effective climbing of the robot. Based on the prototype robot, three preliminary experiments are carried out to verify the effectiveness of the designed robot.
Findings
The theoretical and experimental analyses have verified the reasonability and effectiveness of the proposed robot design.
Research limitations/implications
As the preliminary study, the prototype still need a lot of improvement. The experimental verification is also limited. Future work will focus on improving the design and increasing the theoretical analysis, especially increasing experimental study and designing the next generation of the rod climbing robot.
Practical implications
The designed climbing robot can be used for climbing the rod with variation diameter and flange obstacle, especially the lightening rod in the transformer substation.
Originality/value
The paper designs a new climbing robot that integrates the ability of large variation diameter adaptation and obstacle crossing.
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Li Yinghui, Chunping Xie and Xinjin Liu
The purpose of this paper is to know airflow field and its distribution of pneumatic compact spinning systems. Complete compact spinning (CCS) and four-line rollers compact…
Abstract
Purpose
The purpose of this paper is to know airflow field and its distribution of pneumatic compact spinning systems. Complete compact spinning (CCS) and four-line rollers compact spinning (FRCS) are both two kinds of pneumatic compact spinning systems, which utilizes airflow in condensing equipment to condense fiber bundle and improve yarn properties.
Design/methodology/approach
The paper opted for an exploratory study using finite element method, the airflow field in the condensing area of CCS and FRCS were simulated. First, a periodic movement of the fibers in bundle in condensing area was detected, and the yarn tracks were described veritably under the high-speed-video-camera and AutoCAD Software. Then the physical models of the condensing zone were constructed according to the physical parameters of the practical system. The simulation of airflow velocities were extracted along the yarn tracks using ANSYS Software. Finally, the numerical results were verified by spinning experiments.
Findings
The results show that the negative velocity component along the Y-axis helps keeping beneficial hairiness. CCS has higher negative velocity value and more abundant beneficial hairiness than FRCS. The velocity component in the X-axis direction has a direct effect on yarn evenness. For the same liner density of CCS and FRCS, the larger the value of the velocity component on X-axis is, the better the yarn evenness is. For 9.7tex, CCS has larger velocity component in the X-axis direction and better yarn evenness than FRCS, showing that CCS is more suitable for spinning fine count yarn. The velocity component in the Z-axis direction has a direct effect on breaking strength. CCS has little velocity component in the Z-axis direction and little breaking strength than FRCS.
Originality/value
To know airflow field and its distribution by finite element method is helpful to investigate the condensing principles of the fiber bundle and improve yarn properties.
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Draws attention to the value of myths for therapeutic purposes; cleansing oneself of addiction to theory. Espouses the need for moving beyond the rigidity of types and…
Abstract
Draws attention to the value of myths for therapeutic purposes; cleansing oneself of addiction to theory. Espouses the need for moving beyond the rigidity of types and quantification of change. Attempts to loosen these types and to prepare the ground for their consideration side by side with myths. Discusses implications for learning and communication.
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Public administration as an aspect of governmental activity has existed as long as political systems have been functioning and trying to achieve program objectives set by the…
Abstract
Public administration as an aspect of governmental activity has existed as long as political systems have been functioning and trying to achieve program objectives set by the political decision-makers. Public administration as a field of systematic study is much more recent. Advisers to rulers and commentators on the workings of government have recorded their observations from time to time in sources as varied as Kautilya's Arthasastra in ancient India, the Bible, Aristotle's Politics, and Machiavelli's The Prince, but it was not until the eighteenth century that cameralism, concerned with the systematic management of governmental affairs, became a specialty of German scholars in Western Europe. In the United States, such a development did not take place until the latter part of the nineteenth century, with the publication in 1887 of Woodrow Wilson's famous essay, “The Study of Administration,” generally considered the starting point. Since that time, public administration has become a well-recognized area of specialized interest, either as a subfield of political science or as an academic discipline in its own right.
Laura A. Reese and Joseph F. Ohren
This paper examines the relationship between and the effects of resource allocation and levels of professionalism on local economic development policies and strategies. In short…
Abstract
This paper examines the relationship between and the effects of resource allocation and levels of professionalism on local economic development policies and strategies. In short, it asks a basic question; do cities get what they pay for in terms of economic development? A value judgment is, of course, inherent in this question; "what you pay for" serves as a euphemism for "good" economic development programs and policies. That is, if a local government devotes more budget and staff resources toward economic development, is the city more likely to implement effective economic development policies? Thus, this research examines the relationship between the resources and the professionalism of the local economic development agency, and the corresponding economic development goals and techniques employed in those communities.
Gustavo Dambiski Gomes de Carvalho, June Alisson Westarb Cruz, Hélio Gomes de Carvalho, Luiz Carlos Duclós and Rúbia Oliveira Corrêa
This research aims to analyze the relations between coopetition and innovation, by comparing two coopetitive tourism SMEs networks in Brazil.
Abstract
Purpose
This research aims to analyze the relations between coopetition and innovation, by comparing two coopetitive tourism SMEs networks in Brazil.
Design/methodology/approach
The first network comprises 23 SMEs in Honey Island, a natural reserve, and the second network comprises 21 out of 25 SMEs in the Campos Gerais region, recognized by its strong agribusiness. Innovativeness variables included innovation inputs, capabilities, and outputs; and four types of relations that foster innovation were considered, namely, commercial, informational, knowledge, and partnerships. Social network analysis was employed as well as statistical analyses such as Kolmogorov–Smirnov, Mann–Whitney, Spearman correlation and Fischer's Z transformation.
Findings
Results show that coopetition is related to SMEs innovativeness. Commercial relations centralities correlated with many innovation outputs, information and knowledge centralities with some innovation inputs and outputs, and partnerships also with capabilities.
Research limitations/implications
Besides contributing to the literature of innovation in tourism, this paper also contributes to the literature on coopetition and innovation by investigating how different types of coopetition relationships foster innovation inputs, capabilities, and outputs.
Practical implications
Managers may benefit from these findings by fostering specific innovation inputs, capabilities, or outputs by means of different coopetition relations. Similarly, regional tourism policy planners may also improve the innovativeness of tourism small businesses by fostering coopetition networks.
Originality/value
This paper not only compares the innovativeness of two small business coopetition networks in the tourism industry but also analyses quantitively in detail how different types of coopetition relations are related to different innovativeness variables.
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Suyang Yu, Changlong Ye, Guanghong Tao, Jian Ding and Yinchao Wang
The rope-climbing robot that can cling to a rope for locomotion has been a popular piece of equipment for some overhead applications due to its high flexibility. In view of…
Abstract
Purpose
The rope-climbing robot that can cling to a rope for locomotion has been a popular piece of equipment for some overhead applications due to its high flexibility. In view of problems left by existing rope-climbing robots, this paper aims to propose a new-style rope-climbing robot named Finger-wheeled mechanism robot (FWMR)-II to improve their performance.
Design/methodology/approach
FWMR-II adopts a modular and link-type mechanical structure. With the finger-wheeled mechanism (FWM) module, the robot can achieve smooth and quick locomotion and good capability of obstacle-crossing on the rope and with the link module based on a spatial parallel mechanism, the robot adaptability for rope environments is improved further. The kinematic models that can present configurations of the FWM module and link module of the robot are established and for typical states of the obstacle-crossing process, the geometric definitions and constraints that can present the robot position relative to the rope are established. The simulation is performed with the optimization calculating method to obtain the robot adaptability for rope environments and the experiment is also conducted with the developed prototype to verify the robot performance.
Findings
From the simulation results, the adaptability for rope environments of FWMR-II are obtained and the advantage of FWMR-II compared with FWMR-I is also proved. The experiment results give a further verification for the robot design and analysis work.
Practical implications
The robot proposed in this study can be used for inspection of power transmission lines, inspection and delivery in mine and some other overhead applications.
Originality/value
An ingenious modular link-type robot is proposed to improve existing rope-climbing robots and the method established in this study is worthy of reference for obstacle-crossing analysis of other rope-climbing robots.
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