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Article
Publication date: 12 November 2018

Darong Dai

The purpose of this paper is to use a variety-expanding growth model embedded in the North–South framework to study the implementation of globally desirable protection of…

Abstract

Purpose

The purpose of this paper is to use a variety-expanding growth model embedded in the North–South framework to study the implementation of globally desirable protection of intellectual property rights (IPRs) in the emerging South.

Design/methodology/approach

The authors use a variety-expanding growth model with innovation-led economic growth in both North and South. As usual, imitations targeted equally at Northern and Southern innovations only occur in the South, and the authors focus on the design of Southern IPR protection.

Findings

Welfare-maximizing degrees of Southern IPR protection are explicitly derived for both North and South. There tends to exist a North–South conflict on the right degree of protection. To resolve this conflict, the Southern government can grant appropriate subsides to support domestic innovators. The authors derive the right rate of innovation subsidies such that the conflict is resolved.

Originality/value

This paper represents the first attempt to deal with the North–South conflict on the degree of Southern IPR protection within the variety-expanding growth model. And the novel perspective is to relax the North–South tension on IPR protection via additionally implementing an appropriate innovation subsidy policy.

Details

Journal of Economic Studies, vol. 45 no. 6
Type: Research Article
ISSN: 0144-3585

Keywords

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Article
Publication date: 10 September 2018

Darong Dai

The purpose of this paper is to study whether it is a rational choice for a tax authority to impose an exit tax on capitalists.

Abstract

Purpose

The purpose of this paper is to study whether it is a rational choice for a tax authority to impose an exit tax on capitalists.

Design/methodology/approach

The tax authority chooses a lump-sum exit tax to maximize a weighted objective of expected tax revenue and expected tax horizon. The tax revene consists of capital income taxes and exit taxes. Capitalists are motivated by sustainable capital accumulation and hence maximize the terminal capital stock.

Findings

The author finds that the objective function of the tax authority is strictly increasing in the exit tax, which holds for extensions with sales tax, labor income tax or proportional exit tax, and hence equilibrium exit tax is equal to an exogenous upper bound.

Originality/value

To the author’s knowledge, no existing literature investigates this issue theoretically, and hence the current paper represents the first attempt. The author hopes this theoretical analysis can trigger related empirical studies.

Details

Journal of Economic Studies, vol. 45 no. 4
Type: Research Article
ISSN: 0144-3585

Keywords

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Article
Publication date: 9 November 2015

Darong Dai

The purpose of this paper is to study the problem of optimal Ramsey taxation in a finite-planning-horizon, representative-agent endogenous growth model including…

Abstract

Purpose

The purpose of this paper is to study the problem of optimal Ramsey taxation in a finite-planning-horizon, representative-agent endogenous growth model including government expenditures as a productive input in capital formation and also with hidden actions.

Design/methodology/approach

Technically, Malliavin calculus and forward integrals are naturally introduced into the macroeconomic theory when economic agents are faced with different information structures arising from a non-Markovian environment.

Findings

The major result shows that the well-known Judd-Chamley Theorem holds almost surely if the depreciation rate is strictly positive, otherwise Judd-Chamley Theorem only holds for a knife-edge case or on a Lebesgue measure-zero set when the physical capital is completely sustainable.

Originality/value

The author believes that the approach developed as well as the major result established is new and relevant.

Details

Journal of Economic Studies, vol. 42 no. 6
Type: Research Article
ISSN: 0144-3585

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Article
Publication date: 10 December 2020

Zhenrong Zheng, Lingli Ren, Peng Huang and Xiaoming Zhao

The purpose of this paper is to develop a coated glass fiber fabric which can be used as the outer shell of firefighters' protective clothing and replace aramid fabric.

Abstract

Purpose

The purpose of this paper is to develop a coated glass fiber fabric which can be used as the outer shell of firefighters' protective clothing and replace aramid fabric.

Design/methodology/approach

The silicone resin with excellent heat resistance was selected as the base solution. Silica nanoparticles, mica powder and ferric oxide were added into the coating solution, which was coated on the glass fiber fabrics. The vertical burning, thermal protective performance (TPP) value, second-degree burn time and water repellency of the coated fabrics were characterized.

Findings

Results showed that the dosages of the thickening filler were in the range 4%–6%; the coating solution has good viscosity. The optimal composition of fillers added in the silicone resin is silica nanoparticles 6%, ferric oxide 5% and mica powder 6%. The TPP value of the optimum coated fabric is 413 kW·s/m2. The second-degree burn time is 4.98 s, which is obviously higher than that of the original glass fiber fabric (3.49 s) and that of the aramid fabric (3.82 s). The coated fabric has better thermal stability than aramid fabric.

Originality/value

The production cost of this coated glass fiber fabric was much lower than that of the aramid fabric.

Details

Pigment & Resin Technology, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0369-9420

Keywords

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