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Evi Aprianti
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International Association of Lowland Technology In Collaboration with Hasanuddin University and Saga University Address Faculty of Engineering, Center of Technology Building, 1st Floor Jalan Poros Malino km. 6, Bontomarannu, Gowa Indonesia Postal Code: 91711
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Lowland Technology International
Published by International Association of Lowland Technology
ISSN : 13449656     EISSN : 21878870     DOI : https://doi.org/10.0001/ialt_lti
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
The Lowland Technology International Journal presents activity and research developments in Geotechnical Engineering, Water Resources Engineering, Structural Engineering, Transportation Engineering, Urban Planning, Coastal Engineering, Disaster Prevention and Mitigation Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 463 Documents
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The Development of Guidelines on Promoting Bicycle Use for Tourism in Khao Yai National Park D. Watthanaklang; V. Ratanavaraha
Lowland Technology International Vol 20 No 4, March (2019): Special Issue on: Green Technology for Sustainable Infrastructure Develop
Publisher : International Association of Lowland Technology

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Abstract

At present, bicycle use for both health and tourism is supported but it is found that most Thai people do not popularly use bicycles. This study aimed to seek for the factors promoting Thai people to use bicycles by choosing KhaoYai National Park, where there are a large number of tourists, to be studied with the application of the Theory of planned behavior-TPB. The factors, which were considered, included Attitude, Subjective norm, Perceived behavioral control, and Additional factors which were the factor of infrastructure, and number of bicycle possession in the family. The data used in this study were 429 Thai tourists. The data analysis was done by using Structural Equation Modeling. From data analysis, it was found that Perceived behavioral control, Subjective norm, and Attitude influenced behavioral intention in bicycle use at statistical significance 0.01. For Infrastructure, and number of bicycle possession in the family, they positively influenced behavioral intention in bicycle use in KhaoYai National Park at statistical insignificance. This study can be used as guidelines for the government or involved organizations to determine the pertinent policies on promoting bicycle use.
Evaluating user’s satisfaction of bus service in Mauritius: Decision tree approach T. Champahom; R. Goodary; R. Beeharry; S. Jomnonkwao; V. Ratanavaraha
Lowland Technology International Vol 20 No 4, March (2019): Special Issue on: Green Technology for Sustainable Infrastructure Develop
Publisher : International Association of Lowland Technology

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Abstract

In Mauritius, travelling by bus service widely plays an important role in people’s transportation. In 2011, there were 220 bus routes for bus transportation, and 900 bus stops. This research aimed to study the satisfaction of bus users with a variety of service kinds divided into four main aspects including Vehicle, Driver behavior, Bus stop facility, and Service. The data used for analysis were obtained from 531 completely screened questionnaires inquiring bus users’ satisfaction in Mauritius. The data were analyzed using Decision tree to classify the importance of criteria for bus users’ satisfaction and the Importance performance analysis was used to identify Items in each quadrant of which the meaning was different. The result obtained for the most important question item will be used to improve bus service in order to serve bus users’ needs. From data analysis, it was found that the strength of bus service in Mauritius was Driver and crew’s customs, and the weaknesses were the frequency of bus service and the locations of bus stop facility. In terms of IPA analysis, the frequency of bus services should increase and the locations of bus stops should be safer.
The Study of Willingness to Pay for Bicycle Hire Services At Tourist Attractions in Thailand D. Watthanaklang; V. Ratanavaraha; S. Jomnonkwao; T. Boonyoo; W. Nambulee
Lowland Technology International Vol 20 No 4, March (2019): Special Issue on: Green Technology for Sustainable Infrastructure Develop
Publisher : International Association of Lowland Technology

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Abstract

Bicycles offer non-motorized transport that not only reduces energy consumption and pollution but also offers health benefits. However, most Thai people do not use bicycles. This study investigates the willingness to pay (WTP) for bicycle hire at tourist attractions in Thailand, which can inform strategies that encourage more Thai people to use bicycles. Data analysis considered socio-economic factors, such as gender, age, and level of education, average household income per month, type of tourist attraction, frequency of bicycle use, and type of bicycle. The analyses included the independent sample t-test and analysis of variance F-test. The samples for the analysis comprise 704 Thai tourists. From the results, it was found that WTP for bicycle hire between respondents’ gender for the age groups lower than 18 years and between 30–44 years was different. For type of bicycle, the differences were at statistical significance 0.05. The group having WTP for bicycle hire at a confidence level of 95% shared the same level of education, Average household income per month, frequency of bicycle use, and type of tourist attraction were not different. Government sectors or involved organizations can use this study to inform guidelines around suitable bicycle hire for target groups.
Determination of shear wave velocity by using multichannel analysis of surface wave and borehole measurements: A case study in Ho Chi Minh City Tran Duy Tap; Nguyen Nhat Kim Ngan; Do Van Luu; Nguyen Thanh Vanb
Lowland Technology International Vol 22 No 2 (2020): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v22i2, Septemb.616

Abstract

The soil characterization of the residential development project located in Ho Chi Minh City (HCMC) was conducted by using multichannel analysis of surface wave (MASW) and downhole measurements. The obtained results of both methods indicate that the soils within the depth range of 0-30 m were divided into three layers including (i) the filled soil with shear wave velocity (VS) values of 75-93 m/s, (ii) the silty clay with VS of 61-200 m/s, and (iii) the firm layer soil with VS of 250-415 m/s. The VS30 values estimated by using the MASW, downhole, and empirical correlation methods are in the range of 150-152, 137-161, 126-171 m/s, respectively. Accordingly, the study area is well classified as class E according to National Earthquake Hazards Reduction Program guidelines (NEHRP). The MASW results are in good agreement with those obtained by using the downhole measurements with the average relative difference of 3-4%. This study represents a first attempt of using the MASW method to evaluate the stiffness of soil around HCMC areas and the results obtained from this method and correlation between standard penetration test (SPT)-N and VS can contribute a further detailed understanding of geophysical features in the HCMC area.
Foreign tourist behavior and perception of motorcycle accident risk in Chiang Mai, Thailand P. Iamtrakul; S. Chaypong; J. Klaylee
Lowland Technology International Vol 21 No 3, Dec (2019)
Publisher : International Association of Lowland Technology

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Abstract

Motorcyclists are one of the most vulnerable road user groups in developing world, especially Thailand. Due to its propensity to threats during traveling, tourism industry has some reservations on its quality and adequacy for travel. More specifically, traveling with motorcycles in unfamiliar route has been found to be a major risk for all motorcyclists. Thus, this study aimed to explore relationship this risk poses to the foreign tourists with respect to socio-economic, knowledge and perceptions of those motorcyclists, by conducting the site investigation together with a questionnaire survey. A total of 400 samplings of foreign tourists in Chiang Mai, Thailand was analyzed by applying logistic regression based on binary model. This research found the important factors influencing this risk behavior relatively in high proportional order as follows; 1) understanding of the traffic regulations and 2) possession of adequate and valid travel insurance. Therefore, safety knowledge training especially as it relates to traffic regulation for accident prevention could play a key role in prevention of motorcycle‐related injuries and fatalities. This promising intervention in highly recommended in environments where road safety measures, particularly enforcement activities, are commonly limited.
A comparative study of geophysical measurements to characterise the local site condition of Bengkulu City, Indonesia Lindung Zalbuin Mase; Samsul Bahri; Aliawan Saputra
Lowland Technology International Vol 22 No 3 (2020): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v22i2, Septemb.630

Abstract

Bengkulu City is one of the vulnerable areas to undergo earthquakes in Indonesia. Two major earthquakes happened in 2000 and 2007 had appeared the issue that the site condition played the important role in determining the seismic effect in Bengkulu City. However, the detail understanding of local site condition including the parameter to measure it, is still not fully achieved. This paper presents a comparative study of geophysical measurement to characterise local site condition in Bengkulu City. The geophysical surveys using Multichannel Analysis of Surface Wave (MASW) and Ambient Noise of Microtremor methods are performed to several sites in Bengkulu City. Furthermore, the inversion analysis to generate shear wave velocity (Vs) is performed. The comparisons to site class and time-averaged shear wave velocity for first 30 m depth (Vs30) are also compared. The results show that MASW results tend to be more conservative than Microtremor results. However, both measurements show the similar tendency for site class condition. This study also proposed the empirical models in estimating Vs30 and seismic vulnerability (Kg) indices for Bengkulu City. Those models are reliable in engineering practice application in Bengkulu City.
Effects of external wall composition on embodied CO2 emission and economic cost in hot summer and cold winter zone of China Jiang Lu; Jiantao Weng
Lowland Technology International Vol 22 No 2 (2020): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

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Abstract

External walls make up the main components of the building envelope. Numerous standards were proposed addressing the thermal performance, whereas the embodied CO2 emission and economic cost of different external walls lacks further study. Four typical types of external walls, i.e., external insulation (Wall 1), internal insulation (Wall 2), self-insulation (Wall 3), and combined internal and external insulation (Wall 4), are designed. The thermal performance of Walls 1–4 is set to be the same by adjusting the thickness of insulation. The four walls are considered to be part of a typical residential building located in Hangzhou, China. The embodied CO2 emissions and economic costs of Walls 1–4 are quantitatively compared based on life cycle assessment and life cycle cost. Wall 3 performs optimally on both reducing embodied CO2 emission and reducing economic costs. Although Wall 4 does not have an obvious advantage on reducing embodied CO2 emissions, the total economic cost of Wall 4 is 14.9% and 9.5% lower than that of Wall 1 and Wall 2 respectively, which indicates its potential in possessing a certain amount of the market share. This study provides helpful data and evaluating procedures for establishing standards in future carbon reduction of buildings.
Measuring the Behavior and Preference for Energy Saving and Household Carbon Emission Reduction of Urban Residents in Bangkok and Its Vicinities, Thailand PAWINEE IAMTRAKUL; Sararad Chayphong
Lowland Technology International Vol 22 No 2 (2020): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v22i2, Septemb.649

Abstract

Climate change has become a crisis situation worldwide with great importance attached to mitigation policy and implementation plans towards urban sustainability challenges. Together with rapid growth of urban environments, the Urban Heat Island (UHI) has significantly influenced temperature records whereby the concentration of urban structures and human activity results in a higher air temperature over urbanized areas, especially the metropolitan area of Bangkok, and its vicinity, Thailand. This research aimed to assess the behavior and preferences for energy saving and household carbon emission reduction by focusing on residential groups with a survey via face to face interviews. Data from three parts of questionnaires were input into Structural Equation Modeling (SEM) which are; 1) residential location and characteristics of neighborhood zone; 2) energy consumption behavior and carbon dioxide emission activity, and 3) attitudes toward the effects of UHI and Carbon Dioxide emission reduction. The results revealed that residents’ attitudes influenced their in-house behavior, workplace behavior and travel behavior. Therefore, by raising public awareness on self-adaptive behavior with more practical knowledge aligned with residents’ attitude towards daily activity and lifestyle could be potentially recommended for heat island mitigation measures wherever possible, especially in areas where community planning can be implemented.
Application of Mike/Swat for simulation the salt intrusion – a case study in Ve river, Quang Ngai province Long Ta Bui; Diep Thi My Le
Lowland Technology International Vol 22 No 2 (2020): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v22i2, Septemb.650

Abstract

The coastal areas are mainly impacted via climate change. In the past century, sea level has risen averagely 10-12cm every decade and caused the serious damage in coastal region. Understanding dynamics in estuaries plays an important role in assessing physical, bio-chemical changes which are occurring, especially the salt intrusion. This research demonstrates the approach to evaluate the scope of salt intrusion at Ve estuary, Quang Ngai province via studying hydrodynamic and hydrological processes by using integrated models: SWAT/NAM/MIKE21. Based on flow, salt intrusion data measured and flow by ADCP (Acoustic Doppler Current Profilers) to validate the model. Then, the prediction of impacted scope and the level of salt intrusion in the study area are concluded.
Environmental risk assessment and protection measures due to dewatering during construction of Wangfuzhuang Metro Station, Jinan, China G. Li; B. Hu; L. Lu; J. Chen
Lowland Technology International Vol 21 No 1, June (2019)
Publisher : International Association of Lowland Technology

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Abstract

Jinan is famous due to its spring group with rich groundwater resources. The groundwater system should be protected during the construction of the metro system. This paper presents a case study of the environmental risk assessment due to dewatering and recharges during the construction of Wangfuzhuang Metro Station, Jinan, China. The Fuzzy Analytic Hierarchy Process (FAHP) is employed to evaluate the impact on the environment. Moreover, based on Darcy’s law, and water inflow calculations for a submersible full well and water level line equation under the coupling action of a submersible full dewatering-recharge well group, the dewatering and recharge schemes of the deep foundation pit excavation are designed. Both results from numerical simulation and site survey show that dewatering and recharging at the Jinan R1 line site were effective in environmental protection.

Page 36 of 47 | Total Record : 463

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