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1 – 4 of 4Hoang Long and Pham Trung-Kien
This study aims to quantify the influence of urbanization on housing prices at the district-based level, while also investigating the heterogeneous impacts across different…
Abstract
Purpose
This study aims to quantify the influence of urbanization on housing prices at the district-based level, while also investigating the heterogeneous impacts across different quantiles of housing prices.
Design/methodology/approach
The study uses remote-sensed spectral images from the Landsat 7 ETM+ satellite to measure urbanization, replacing prior reliance solely on urban population metrics. Subsequently, the two-step system generalized method of moments is used to evaluate how urbanization influences district-based housing prices through three spectrometries: Urban Index (UI), Normalized Difference Built-up Index (NDBI) and Built-Up Index (BUI). Finally, this study examines the heterogeneous impacts across various housing price quantiles through Dynamic Panel Quantile Regression with non-additive fixed effects under Markov Chain Monte Carlo simulation.
Findings
The study demonstrates that urbanization leads to an increase in regional housing prices. However, these impact magnitudes vary across housing price quantiles. Specifically, the impact exhibits an inverse V-shaped curve, with urbanization exerting a more pronounced influence on the 60th percentile of housing prices, while its effect on the 10th and 90th percentiles is comparatively weaker.
Originality/value
This study uses a novel method of remote sensing to measure urbanization and investigates its effects on housing prices. Furthermore, it provides an empirical application of non-additive fixed effect quantile regression for analyzing heterogeneity.
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Dzung Tien Nguyen, Phuc Hong Pham and Kien Trung Hoang
This paper aims to propose a method to reduce the resistance of silicon-based V-shaped electrothermal microactuator (VEM) by applying a surface sputtering process.
Abstract
Purpose
This paper aims to propose a method to reduce the resistance of silicon-based V-shaped electrothermal microactuator (VEM) by applying a surface sputtering process.
Design/methodology/approach
Four VEM’s samples have been fabricated using traditional silicon on insulator (SOI)-Micro-electro-mechanical System (MEMS) technology, three of them are coated with a thin layer of platinum on the top surface by sputtering technique with different sputtered times and the other is original. The displacements of the VEM are calculated and simulated to evaluate the advantages of sputtering method.
Findings
The measured results show that the average resistance of the sputtered structures is approximately 1.16, 1.55 and 2.4 times lower than the non-sputtering sample corresponding to the sputtering time of 1.5, 3 and 6 min. Simulation results confirmed that the maximum displacement of the sputtered VEM is almost 1.45 times larger than non-sputtering one in the range of voltage from 8 to 20 V. The experimental displacements are also measured to validate the better performance of the sputtered samples.
Originality/value
The experimental results demonstrated the better displacement of the VEM structure after using the platinum sputtering process. The improvement can be considered and applied for enhancing displacement as well as decreasing the driving voltage of the other electrothermal microactuators like U- or Z-shaped structures while combining with the low-cost SOI-MEMS micromachining technology.
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Minh Nguyen Dat, Kien Duong Trung, Chau Dinh Van and Le Nguyen Thi
This study aims to present the factors affecting and comparing the difference in community acceptance between groups of survey from the perspective of behavioral reasoning theory…
Abstract
Purpose
This study aims to present the factors affecting and comparing the difference in community acceptance between groups of survey from the perspective of behavioral reasoning theory (BRT).
Design/methodology/approach
This study presents a quantitative method through conducting survey of 152 local residents from three provinces of Viet Nam.
Findings
This study examines the new approach of “reason for” and “reason against” community acceptance within the context of wind energy development in Viet Nam. This study also suggests that “reason for” have a positive impact on the local community; however, issues like noise and shadow cast by turbine blades are significant challenges that contribute to the “reason against” acceptance. This study’s findings provide evidence of the importance of location and socio – economic impacts in influencing community acceptance and can give some feedback for local policymakers in Viet Nam’s energy sector as they implement wind projects in potential areas.
Originality/value
To the best of the author's knowledge, this study is the first empirical study conducted across three Vietnamese provinces on community acceptance of onshore wind energy. The integration of literature on socio-acceptance with BRT in energy research contributes valuable insights to the fields of energy behavior and energy policy research.
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Peter Josef Stauvermann, Shasnil Avinesh Chand, Daniel Borer and Ronald Ravinesh Kumar
This study examines the contribution of urban development to Vietnam's economic progress over the period 1986–2020. The study uses an augmented Solow framework, where urbanization…
Abstract
This study examines the contribution of urban development to Vietnam's economic progress over the period 1986–2020. The study uses an augmented Solow framework, where urbanization is included as a shift variable in addition to capital per worker and accounts for structural breaks. It examines the cointegration and the long-run and short-run effects of urban development from four different cases of cointegration (constant, restricted constant, restricted trend and trend options), with each case accounting for the effect of a significant structural break. Also, the study provides causality nexus to check the presence of urbanization-led growth hypothesis. From the results, we note a long-run positive effect of urbanization on economic growth, but no short-run effects. In all cases, a 1% increase in population results in 0.8–0.9 increase of output, hence supporting a positive and momentous effect of urbanization over the long-term. We note a significant positive effect of a single structural break period (1991), which is a period of major shift towards economic progress. We note bidirectional causality between capital and output and a unidirectional causality from output and capital to urbanization. The former suggests a mutually reinforcing effect of capital accumulation and economic growth, and the latter indicates that urban development necessitates economic growth and capital accumulation. The findings derived from this study provide further impetus for urban development and urban policies and consider urbanization as a critical source of economic growth for Vietnam.
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