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1 – 10 of over 13000Mousa Pazhuhan and Narges Shiri
This paper aims to identify and determine regional tourism axes in Hormozgan Province, Iran, as a region with significant potential
Abstract
Purpose
This paper aims to identify and determine regional tourism axes in Hormozgan Province, Iran, as a region with significant potential
Design/methodology/approach
The research method is quantitative and uses the fuzzy accreditation tool and TOPSIS model; the identification, determination and ranking of regional tourism axes have been performed by analyzing the spatial distribution of tourism attractions in the GIS environment.
Findings
The results show that given the capacities of Hormozgan Province, at least 15 axes are recognizable. This paper highlights regional tourism planning as a tool for urban and rural socio-economic development in potential provinces such Hormozgan.
Originality/value
This study provides a number of practical implications for regional tourism development as follows: it identifies some of the most important potential axes in Hormozgan Province, which can be considered as investment areas in the national and regional tourism development strategy. The spatial results of this study could be embedded in all urban and rural developmental plans in the province. Tourism investment should shift its spatial concentration from the spot approach, especially islands and cities, to the axis approach while equipping those axes as comprehensive spatial strategic regional tourism plans. Sectoral tourism in each sector including sports, economy and nature could be planned as if sectoral institutions and organizations are going to develop their own tourism goals.
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Angular errors in the robot axes can make a significant contribution to robot positioning accuracy. This paper seeks to propose a new measuring method for measuring angular errors.
Abstract
Purpose
Angular errors in the robot axes can make a significant contribution to robot positioning accuracy. This paper seeks to propose a new measuring method for measuring angular errors.
Design/methodology/approach
New techniques were devised for the detailed investigation of joint angular errors using a reference encoder together with a precision electronic level and autocollimator. This equipment enabled vertical and horizontally orientated joint axes to be measured with the robot located on‐site. Circle contouring measurements were also undertaken to assess the significance of multi‐axis movements on the accuracy of the end effector.
Findings
The technique, devised using a simulation program for the robot geometry with results from a circular test, enables robot errors to be characterised in terms of datum location error, backlash, gear transmission error, axes misalignments and joint encoder offset.
Originality/value
The paper describes the experimental and theoretical accuracy characteristics of an articulated industrial robot. Close correlation was obtained between the experimental and theoretical results. This paper offers the practical robot calibration method for industrial application.
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David A. Collier and Susan M. Meyer
This research is the first study to evaluate and compare alternative service positioning matrices using rigorous statistical analysis and a common data set based on a variety of…
Abstract
This research is the first study to evaluate and compare alternative service positioning matrices using rigorous statistical analysis and a common data set based on a variety of service processes. The matrices are evaluated based on five guidelines: clarity of construct definitions, conceptual independence of the two axes of each matrix, clarity in specifying the direction of causation from one axis to the other, axis unidimensionality, and correlation between the two axes of each matrix. These five guidelines provide a more rigorous approach to evaluating current and future positioning matrices, and contribute to the literature by defining more specifically than past research what constitutes a good positioning matrix. The difference between a classification scheme and a positioning matrix are also explained. The results indicate that while there is a statistically significant level of association (correlation) between the axes (Guideline 5) of each of the service matrices studied, meeting the requirements of the other four guidelines is a challenge for some service matrices.
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Qiang Fang, Weidong Chen, Anan Zhao, Changxi Deng and Shaohua Fei
In aircraft wing–fuselage assembly, the distributed multi-point support layout of positioners causes fuselage to deform under gravity load, leading to assembly difficulty and…
Abstract
Purpose
In aircraft wing–fuselage assembly, the distributed multi-point support layout of positioners causes fuselage to deform under gravity load, leading to assembly difficulty and assembly stress. This paper aims to propose a hybrid force position control method to balance aerodynamic shape accuracy and deformation of assembly area, thereby correcting assembly deformation and reducing assembly stress.
Design/methodology/approach
Force and position control axes of positioners are selected based on screw theory and ellipsoid method. The position-control axes follow the posture trajectory to align the fuselage posture. To exert force on the fuselage and correct the deformations, the force-control axes follow the contact force derived by using orthogonal experiments and partial least squares regression (PLSR). Finite element simulation and one-dimension deformation correction experiment are conducted to verify the validity of this method.
Findings
Simulation results indicate that hybrid force position control method can correct assembly deformation and improve the wing–fuselage assembly quality significantly. Experiment on specimen verifies the effect of this method indirectly.
Originality/value
The proposed method gives a solution to solve the deformation problem during aircraft wing-fuselage assembly, thereby reducing assembly stress and improving assembly quality.
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THE increase in aircraft sizes which is envisaged in the next few years, raises the question of adequate lofting space where the traditional method by fairing by eye is still…
Abstract
THE increase in aircraft sizes which is envisaged in the next few years, raises the question of adequate lofting space where the traditional method by fairing by eye is still used. This problem can be met by the adoption of a mathematical technique which not only eliminates the need for considerable space but also provides close and accurate control of the body form. Whilst the size factor may make the lofting problem more acute and so lead to a better appreciation of a mathematical method, the use of such a method is equally valuable in the case of smaller aircraft in that it enables the loftsman to blend all parts of the body form together and to provide the layout draughtsman with accurate shapes for all parts which contain part of the body contour.
Michal Gdula, Jan Burek, Lukasz Zylka and Marcin Plodzien
The purpose of this paper is to determine the influence of a toroidal cutter axis orientation and a variable radius of curvature of the machined contour of sculptured surface on…
Abstract
Purpose
The purpose of this paper is to determine the influence of a toroidal cutter axis orientation and a variable radius of curvature of the machined contour of sculptured surface on the five-axes milling process. Simulation and experimental research performed in this work are aimed to determine the relationship between the parameters of five-axes milling process and the shape and dimensional accuracy of curved outline of Inconel 718 alloy workpiece.
Design/methodology/approach
A subject of research are sculptured surfaces of the turbine blade. Simulation research was performed using the method of direct mapping tools in the CAD environment. The machining research was carried out with the use of multi-axis machining center DMU 100 monoBLOCK DMG, equipped with rotating dynamometer to measure the components of the cutting force. To control the shape and dimensional accuracy, the coordinate measuring machine ZEISS ACCURA II was used.
Findings
In this paper, the effect of the toroidal cutter axis orientation and the variable radius of curvature of the machined contour on the parameters of five-axes milling process and the accuracy of the sculptured surfaces was determined.
Practical implications
Five-axes milling with the use of a toroidal cutter is found in the aviation industry, where sculptured surfaces of the turbine blades are machined. The results of the research allow more precise planning of five-axes milling and increase of the turbine blades accuracy.
Originality/value
This paper significantly complements the current state of knowledge in the field of five-axes milling of turbine blades in terms of their accuracy.
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David Austen-Smith, Adam Galinsky, Katherine H. Chung and Christy LaVanway
Dove and Axe were two highly successful brands owned by Unilever, a portfolio company. Dove was a female-oriented beauty product brand that exhorted “real beauty” and not the…
Abstract
Dove and Axe were two highly successful brands owned by Unilever, a portfolio company. Dove was a female-oriented beauty product brand that exhorted “real beauty” and not the unachievable standards that the media portrayed. In contrast, Axe was a brand that purportedly “gives men the edge in the mating game.”□ Their risqué commercials always portrayed the supermodel-type beauty ideal that Dove was trying to change. Unilever had always been a company of brands where the consumer knew the brands but not the company, but recently there had been the idea to unify the company with an umbrella mission for all of its brands. This would turn Unilever into a company with brands, potentially increasing consumer awareness and encourage cross-purchases between the different brands. However, this raised questions about the conflicting messages between the brands' marketing campaigns, most notably between Unilever's two powerhouse brands, Dove and Axe. The case begins with COO Alan Jope anticipating an upcoming press meeting in New York City to discuss Unilever's current (i.e., 2005) performance and announce Unilever's decision to create an umbrella mission statement for the company. This case focuses on the central question of whether or not consistency between brand messages is necessary or inherently problematic.
The Unilever's Mission for Vitality case was created to help students and managers develop an appreciation for how the values underlying a marketing campaign can affect and alter an organization's culture. The case focuses on how two products and marketing campaigns that express conflicting underlying values (as reflected in the Dove Real Beauty and the Axe Effect campaigns) within the same corporation can give rise to a number of unintended organizational and marketing complications.
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Salahuddin, Bakhtiar, Yusman and Fadhli
Purpose – This study aims to design and build a wireless supervisory control and data acquisition (SCADA) system based on Protocol AX.25 with the aim of monitoring the performance…
Abstract
Purpose – This study aims to design and build a wireless supervisory control and data acquisition (SCADA) system based on Protocol AX.25 with the aim of monitoring the performance of several parameters in Microhydro Power Plant (MHPP). This system can monitor several MHPP parameters such as voltage, current, frequency, and turbine rotation so that it can be accessed directly at one central location.
Design/Methodology/Approach – The design is done by taking into account the real parameters that exist in the MHPP. Some parameters that become the main object to see the performance of MHPP are voltage, current, frequency, and turbine rotation. The voltage generated by the MHPP must be adjusted to the voltage supplied by State Electricity Company to the consumer, including the phase used. The resulting stream should also be monitored for power to be adjusted to the turbine spin. The generator frequency is kept stable according to the standard frequency of the State Electricity Company generator.
Findings – The remote terminal unit (RTU) system has been simulated using 2 ACS712 current sensors, voltage sensor, zero crossing point, frequency sensor, and rotation sensor functionalized to monitor MHPP parameters. The AX.25 protocol has been applicable in the wireless SCADA network for monitoring the performance of MHPP by embedding in KYL-1020UA transceiver radio using the 433 MHz frequency and the audio frequency shift keying modulation system. Radio transmitter KYL-1020UA has been successfully simulated to send data from sensors to display on the computer through SCADA built applications. The data changes in the RTU section can be displayed properly on the graphic user interface in accordance with the existing display at the MHPP location.
Research Limitations/Implications – There are only two RTUs that will be connected to communicate, in this case MHPP-1 with callsign “RTU-001” and MHPP-2 with callsign “RTU-002.” While the existing devices in the data access section parameters MHPP as master station with callsign “MSSCADA” monitoring the performance of parameters sent from the RTU. There is no collision or error in data transmission. Baudrate is varied at 1,200 bps, 2,400 bps, 4,800 bps, and 9,600 bps for effective throughput calculation and AX.25 protocol efficiency. The transmission distance is varied at 100 m, 200 m, 300 m, and 500 m to see the bit error rate with baudrate 1,200 bps and 9,600 bps.
Practical Implications – This product is expected to be applied to several MHPP locations in Aceh Province so that its monitoring system is more centralized and efficient.
Originality/Value – This research if for the efficient monitoring of several MHPP located far apart and can be monitored in one central location so that operators do not have to be located at the plant site.
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The author looks at how advertising aimed at cisgender men has shifted over the last two decades, moving from standard representations of hegemonic forms of masculinity to the…
Abstract
The author looks at how advertising aimed at cisgender men has shifted over the last two decades, moving from standard representations of hegemonic forms of masculinity to the adoption of the language and style of “postfeminist authenticity.” Drawing on a range of insights from across the social sciences and using the examples of three popular grooming products, Axe, Gillette, and Dollar Shave Club, the author critically examines the manner in which these new campaigns emphasize individual self-improvement and consumption choices as a means to solving the problems generated “by traditional, supposedly inauthentic, expressions of masculinity.”
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The purpose of the present work is to develop a unified mathematical theory of the steady and disturbed motion of a helicopter with particular emphasis on the dynamical aspects of…
Abstract
The purpose of the present work is to develop a unified mathematical theory of the steady and disturbed motion of a helicopter with particular emphasis on the dynamical aspects of the problem. The helicopter is assumed to undergo arbitrary small disturbances in velocity and angular velocity from a steady rectilinear flight condition, and the rotor forces are calculated as generalized functions of the initial and disturbed velocities. A high degree of accuracy is maintained both in the retention, where necessary, of products of small quantities and in the retention of high powers of µ in the solution of the trim equations. The steady motion of the helicopter is discussed at length as a preliminary to a study of its dynamic stability. Part I deals with the general features underlying helicopter motion. The importance is emphasized of a three‐dimensional approach to the problem, and it is shown that a complete description of steady rectilinear motion demands the use of fifteen equations in eighteen parameters, the solution of which presents no real difficulty. A start is made on the analysis of rotor blade motion, and the geometrical aspects are discussed by means of a system of rotating vectors.