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Article
Publication date: 25 March 2024

Boyang Hu, Ling Weng, Kaile Liu, Yang Liu, Zhuolin Li and Yuxin Chen

Gesture recognition plays an important role in many fields such as human–computer interaction, medical rehabilitation, virtual and augmented reality. Gesture recognition using…

Abstract

Purpose

Gesture recognition plays an important role in many fields such as human–computer interaction, medical rehabilitation, virtual and augmented reality. Gesture recognition using wearable devices is a common and effective recognition method. This study aims to combine the inverse magnetostrictive effect and tunneling magnetoresistance effect and proposes a novel wearable sensing glove applied in the field of gesture recognition.

Design/methodology/approach

A magnetostrictive sensing glove with function of gesture recognition is proposed based on Fe-Ni alloy, tunneling magnetoresistive elements, Agilus30 base and square permanent magnets. The sensing glove consists of five sensing units to measure the bending angle of each finger joint. The optimal structure of the sensing units is determined through experimentation and simulation. The output voltage model of the sensing units is established, and the output characteristics of the sensing units are tested by the experimental platform. Fifteen gestures are selected for recognition, and the corresponding output voltages are collected to construct the data set and the data is processed using Back Propagation Neural Network.

Findings

The sensing units can detect the change in the bending angle of finger joints from 0 to 105 degrees and a maximum error of 4.69% between the experimental and theoretical values. The average recognition accuracy of Back Propagation Neural Network is 97.53% for 15 gestures.

Research limitations/implications

The sensing glove can only recognize static gestures at present, and further research is still needed to recognize dynamic gestures.

Practical implications

A new approach to gesture recognition using wearable devices.

Social implications

This study has a broad application prospect in the field of human–computer interaction.

Originality/value

The sensing glove can collect voltage signals under different gestures to realize the recognition of different gestures with good repeatability, which has a broad application prospect in the field of human–computer interaction.

Details

Sensor Review, vol. 44 no. 2
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 17 April 2024

Bingwei Gao, Hongjian Zhao, Wenlong Han and Shilong Xue

This study proposes a predictive neural network model reference decoupling control method for the coupling problem between the leg joints of hydraulic quadruped robots, and…

Abstract

Purpose

This study proposes a predictive neural network model reference decoupling control method for the coupling problem between the leg joints of hydraulic quadruped robots, and verifies its decoupling effect..

Design/methodology/approach

The machine–hydraulic cross-linking coupling is studied as the coupling behavior of the hydraulically driven quadruped robot, and the mechanical dynamics coupling force of the robot system is controlled as the disturbance force of the hydraulic system through the Jacobian matrix transformation. According to the principle of multivariable decoupling, a prediction-based neural network model reference decoupling control method is proposed; each module of the control algorithm is designed one by one, and the stability of the system is analyzed by the Lyapunov stability theorem.

Findings

The simulation and experimental research on the robot joint decoupling control method is carried out, and the prediction-based neural network model reference decoupling control method is compared with the decoupling control method without any decoupling control method. The results show that taking the coupling effect experiment between the hip joint and knee joint as an example, after using the predictive neural network model reference decoupling control method, the phase lag of the hip joint response line was reduced from 20.3° to 14.8°, the amplitude attenuation was reduced from 1.82% to 0.21%, the maximum error of the knee joint coupling line was reduced from 0.67 mm to 0.16 mm and the coupling effect between the hip joint and knee joint was reduced from 1.9% to 0.48%, achieving good decoupling.

Originality/value

The prediction-based neural network model reference decoupling control method proposed in this paper can use the neural network model to predict the next output of the system according to the input and output. Finally, the weights of the neural network are corrected online according to the predicted output and the given reference output, so that the optimization index of the neural network decoupling controller is extremely small, and the purpose of decoupling control is achieved.

Details

Robotic Intelligence and Automation, vol. 44 no. 2
Type: Research Article
ISSN: 2754-6969

Keywords

Article
Publication date: 1 September 1999

Michael Di Francesco

This paper is based on work undertaken for the Commonwealth Department of Finance and Administration and reports on recent developments within the Australian public sector of…

1273

Abstract

This paper is based on work undertaken for the Commonwealth Department of Finance and Administration and reports on recent developments within the Australian public sector of performance measurement in policy advice output. It outlines the role of performance information in an accrual‐based outcomes and outputs management framework, examines the merits of a model for developing criteria for “good” performance information and explores how these design principles might be applied to policy advice output. The paper identifies the key attributes of policy advice output from the perspective of both providers and clients and their linkage to proposed performance indicators, and concludes by surveying the political and accountability problems associated with specifying and measuring policy advice in government.

Details

International Journal of Public Sector Management, vol. 12 no. 5
Type: Research Article
ISSN: 0951-3558

Keywords

Article
Publication date: 17 October 2008

Ping He and Zhongsheng Hua

To develop a method of compensation analysis based on the additive data envelopment analysis model.

583

Abstract

Purpose

To develop a method of compensation analysis based on the additive data envelopment analysis model.

Design/methodology/approach

It is a common assumption in current target setting literature that outputs of decision making units (DMUs) are generated simultaneously. In practice, outputs of DMUs may be generated consecutively, and targets of posterior outputs may need to be adjusted to keep a DMU efficient when the anterior output cannot reach the previously set output target. The proposed method determines a compensation rate among consecutive outputs, which is applied to keep a DMU efficient when the decrease of an anterior output exceeds its stability region. This compensation analysis is also extended to consecutive inputs.

Findings

Sufficient and necessary conditions for preserving efficiency upon output compensation are presented.

Research limitations/implications

The compensation analysis when multiple anterior outputs decrease from their previously set targets is the main limitation, and needs further investigation.

Practical implications

The paper is a useful method for decision maker to set target consecutively.

Originality/value

The paper defines a new target setting (adjusting) problem, in which targets of posterior outputs may need to be adjusted to keep a DMU efficient if an anterior output of the DMU decreases from its previously set target. Theoretical analyses of the compensation analysis are provided.

Details

Kybernetes, vol. 37 no. 9/10
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 7 September 2010

Xiaoyun Liu, Wanchun Luo, Xuefeng Mao, Xiuqing Wang and Xian Xin

The paper aims to assess the impact of agricultural output changes on the general price level over time with China as an example.

1800

Abstract

Purpose

The paper aims to assess the impact of agricultural output changes on the general price level over time with China as an example.

Design/methodology/approach

A simple numerical global general equilibrium (GE) model of two regions (China and the rest of the world) and three commodities (agriculture, manufacturing goods, and services) is used to assess the impacts of agricultural output changes on the overall economy price changes. The numerical GE model of this paper consists of production, final consumption, and market clear conditions. The results are generated with the GE model calibrated to aggregated China's input‐output tables of 1987, 1997, and 2005.

Findings

The results suggest that China witnessed a declining influence of agricultural output changes on general price changes. The contribution of given agricultural output change on the general price change in 2005 was merely less than 60 percent of that in 1987, which in turn implies that macro policies targeting to curb general inflation via boosting agricultural output will be less effective as those of 20 years ago.

Practical implications

China's policy makers should rely less and less on promoting agricultural output policies to fight against general inflation and should resort to non‐agricultural policies.

Originality/value

The paper argues that the influence of agriculture on the China's general price indices has been weakening along with China's economic development with a numerical GE model calibrated to aggregated China's input‐output tables of 1987, 1997, and 2005.

Details

China Agricultural Economic Review, vol. 2 no. 3
Type: Research Article
ISSN: 1756-137X

Keywords

Article
Publication date: 12 August 2014

Bing Xu and Xiaowen Hu

– The purpose of this paper is to find alternative strategies to change negative output gaps in China.

Abstract

Purpose

The purpose of this paper is to find alternative strategies to change negative output gaps in China.

Design/methodology/approach

A path Philips curves approach is proposed to investigate output gaps, which develops hybrid Philips curves with the control variables of money, house prices and interest rates.

Findings

An alternative strategy to stop the decline in output gaps rate is to perform interest rate, house price, and money growth rate about 3, 1 and 15 percent, respectively. The results also indicate that only one of monetary increase, changes in interest rates, and house price adjustments are difficult to change the negative output gap.

Practical implications

Alternative strategies cannot only change the negative output gap, but also succeed in pushing the inflation rate down to 3 percent.

Originality/value

This study provides a new path Philips curves to simulate how the macroscopic control variables influence output and inflation. It provides a useful insight for stopping the decline in output gaps.

Details

Management Decision, vol. 52 no. 7
Type: Research Article
ISSN: 0025-1747

Keywords

Article
Publication date: 1 January 1992

Philip Lawler

Examines the effects of a monetary expansion on certain keymacroeconomic variables, in particular the nominal exchange rate,competitiveness, and domestic output and employment…

Abstract

Examines the effects of a monetary expansion on certain key macroeconomic variables, in particular the nominal exchange rate, competitiveness, and domestic output and employment, using a modified version of the Dornbusch (Journal of Political Economy, 1976) model. Dornbusch′s original analysis of the implications of sticky prices was conducted on the basis of two alternative assumptions concerning the supply side of the economy, a fixed (full‐employment) level of output and (in his Appendix) continuous goods market clearing, maintained by instantaneous output adjustment. Neither of these assumptions appears particularly satisfactory and the model presented here attempts to address the issue by assuming output to be instantaneously fixed, but to respond gradually to excess demand or supply in the goods market. The structure of the resulting model is such as to imply a third‐order dynamic adjustment process which is solved explicitly. Two principal conclusions follow from the analysis. First, despite the fact that the monetary expansion inevitably reduces the domestic interest rate, nominal exchange rate overshooting need not result. Second, the dynamics of adjustment are considerably more complicated than in the original Dornbusch model and may, in fact, be cyclical in nature.

Details

Journal of Economic Studies, vol. 19 no. 1
Type: Research Article
ISSN: 0144-3585

Keywords

Book part
Publication date: 1 November 2007

Irina Farquhar and Alan Sorkin

This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized innovative…

Abstract

This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized innovative information technology open architecture design and integrating Radio Frequency Identification Device data technologies and real-time optimization and control mechanisms as the critical technology components of the solution. The innovative information technology, which pursues the focused logistics, will be deployed in 36 months at the estimated cost of $568 million in constant dollars. We estimate that the Systems, Applications, Products (SAP)-based enterprise integration solution that the Army currently pursues will cost another $1.5 billion through the year 2014; however, it is unlikely to deliver the intended technical capabilities.

Details

The Value of Innovation: Impact on Health, Life Quality, Safety, and Regulatory Research
Type: Book
ISBN: 978-1-84950-551-2

Book part
Publication date: 13 May 2019

Rosaria Rita Canale and Rajmund Mirdala

The role of money and monetary policy of the central bank in pursuing macroeconomic stability has significantly changed over the period since the end of World War II…

Abstract

The role of money and monetary policy of the central bank in pursuing macroeconomic stability has significantly changed over the period since the end of World War II. Globalization, liberalization, integration, and transition processes generally shaped the crucial milestones of the macroeconomic development and substantial features of economic policy and its framework in Europe. Policy-driven changes together with variety of exogenous shocks significantly affected the key features of macroeconomic environment on the European continent that fashioned the framework and design of monetary policies.

This chapter examines the key basis of the central bank’s monetary policy on its way to pursue and preserve the internal and external stability of the purchasing power of money. Substantial elements of the monetary policy like objectives and strategies are not only generally introduced but also critically discussed according to their accuracy, suitability, and reliability in the changing macroeconomic conditions. Brief overview of the Eurozone common monetary policy milestones and the past Eastern bloc countries’ experience with a variety of exchange rate regimes provides interesting empirical evidence on origins and implications of vital changes in the monetary policy conduction in Europe and the Eurozone.

Details

Fiscal and Monetary Policy in the Eurozone: Theoretical Concepts and Empirical Evidence
Type: Book
ISBN: 978-1-78743-793-7

Keywords

Abstract

Details

Agricultural Markets
Type: Book
ISBN: 978-0-44482-481-3

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