http://ajstd.org/index.php/ajstd/issue/feed ASEAN Journal on Science and Technology for Development 2019-09-15T02:11:03+07:00 Widodo ajstd.journal@gmail.com Open Journal Systems <h2>About the <em>ASEAN Journal on Science &amp; Technology for Development</em></h2> <p style="font-weight: 300; font-size: 1.01rem;">Jointly published by the ASEAN Committee on Science and Technology and the Ministry of Research, Technology, and Higher Education of the Republic of Indonesia, the <em>ASEAN Journal on Science &amp; Technology for Development</em> (print ISSN 0217-5460; online ISSN 2224-9028) is a peer-reviewed open access journal focusing on the publication of articles that make positive, tangible contributions to science and technology in the ASEAN region. Its main aim is to promote andGoogle Scholar, ID Scopus, ResearchGate, Orcid), accelerate the discovery and ultimate ASEAN-wide application of scientific and technological innovations, the consequence of which should be greater prosperity for the people of Southeast Asia.</p> <p style="font-weight: 300; font-size: 1.01rem;">AJSTD covers a wide range of technology-related subjects in the context of ASEAN, including biotechnology, non-conventional energy research, materials science and technology, marine sciences, meteorology and geophysics, food science and technology, microelectronics and information technology, space applications, science and technology policy, and infrastructure and resources development.</p> <h2>About The ASEAN Committee on Science and Technology</h2> <p style="font-weight: 300; font-size: 1.01rem;">The ASEAN Committee on Science and Technology was established to strengthen and enhance the capability of ASEAN in science and technology so that it can promote economic development and help achieve a high quality of life for its people. Its terms and reference are:</p> <ul class="asean-terms" style="font-weight: 300; font-size: 1.01rem;"> <li class="show">To generate and promote development of scientific and technological expertise and manpower in the ASEAN region;</li> <li class="show">To facilite and accelerate the transfer of scientific and technological development among ASEAN countries and from more advanced regions of the world to the ASEAN region;</li> <li class="show">To provide support and assistance in the development and application of research discoveries and technological practices of endogenous origin for the common good, and in the more effective use of natural resources available in the ASEAN region and in general; and</li> <li class="show">To provide scientific and technological support towards the implementation of existing and future ASEAN projects.</li> </ul> <p style="font-weight: 300; font-size: 1.01rem;">Further information about the activities of ASEAN COST can be <a class="border-hover" href="http://astnet.asean.org/index.php?option=com_content&amp;view=categories&amp;id=8&amp;Itemid=130" target="_blank" rel="noopener">found on its website</a>.</p> http://ajstd.org/index.php/ajstd/article/view/555 Stable Carbon Isotope Signature of Particulate Organic Matter in the Southwestern Sumatran Waters of the Eastern Indian Ocean 2019-09-15T02:11:03+07:00 A'an Johan Wahyudi aanj001@lipi.go.id Afdal Afdal afdaldjalius28@gmail.com Hanny Meirinawati hanny.meirinawati@gmail.com <p>The Southwestern Sumatran Waters of the Eastern Indian Ocean are known to be affected by the South Java Current and the South Equatorial Counter Current. Many studies have been carried out in relation to upwelling and the Indonesian Through Flow. However, there has been no systematic study into the properties of the particulate organic matter in the Southwestern Sumatran Waters. Therefore, the organic matter in these waters in terms of its origin is unknown. As part of the <em>Widya Nusantara Expedition</em> 2015 research cruise, this study aimed to examine the stable isotope δ<sup>13</sup>C signature of particulate organic matter (POM), especially with regards to the origins of the organic matter. The stable isotope δ<sup>13</sup>C is complemented by other variables such as chlorophyll-<em>a</em>, particulate organic carbon (POC), and nutrients (phosphate, silicate, ammonium and nitrate). The POC tends to be depth-dependent. The values of δ<sup>13</sup>C are −23.56, −24.30 and −24.06‰ for 5, 100 and 300 m depths, respectively. We found that POM tended to be isotopically lighter with increasing POC and chl-<em>a</em>, especially in the surface water, potentially due to the preferential lighter carbon isotope for metabolism by the primary producer. The origin of POM in the Southwestern Sumatran waters is marine end-member in the surface (up to 100 m depth) and mixed compositions at the surface of twilight zone (100–300 m depth). The next layer, i.e. twilight zone (more than 300 m depth), is terrigenous end-member. The surface POM of SSW, as shown in 5 m depth, is not freshly produced and tends to be either autochthonous or allochthonous.</p> 2019-09-03T09:17:10+07:00 ##submission.copyrightStatement## http://ajstd.org/index.php/ajstd/article/view/578 Poverty Approach and How to Reduce it with Agropolitan Program in Gorontalo Province 2019-09-03T08:25:47+07:00 Aulia Ika Rahmawati ratihfitria.putri@ugm.ac.id Lutfi Ardianti ratihfitria.putri@ugm.ac.id Salma Hayyu Nur Husna ratihfitria.putri@ugm.ac.id Eni Paryani ratihfitria.putri@ugm.ac.id Nur Amrina Rosidhah ratihfitria.putri@ugm.ac.id Tiara Putri Amalia ratihfitria.putri@ugm.ac.id Ratih Fitria Putri ratihfitria.putri@ugm.ac.id <p>This study aims at explaining the conditions of poverty in Gorontalo Province, identify the causes of poverty in Gorontalo Province, and then propose efforts to reduce the poverty. Data related to human and economic resources were used in the analysis. The condition of poverty is seen through the DPSIR approach which consists of driver (D), pressure (P), state (S), impact (I), and response (R). Poverty in Gorontalo Province can be reduced by utilizing the occupation which dominates the population, which is in agriculture sector. Therefore, developing agropolitan is a solution. In the first stage, location quotient (LQ), shift share (SS), and Klassen typology method were used to determine regencies/cities that have the potential to develop agropolitan system. The results of the analysis show that there were two districts that have the potential to develop agropolitan systems, which were Pohuwato Regency and Gorontalo Regency. Efforts to reduce poverty in Gorontalo Province with agropolitan continued with the second stage through the preparation of products and forms of management organizations, and the third stage in the form of strengthening human resources.</p> 2019-09-02T16:51:19+07:00 ##submission.copyrightStatement## http://ajstd.org/index.php/ajstd/article/view/575 Developing Alternative Mangrove Ecosystem Management Scenarios through Economic Valuation in the Coastal Area of Jangkaran Village, Kulonprogo Regency 2019-09-03T08:26:39+07:00 Dwike Ariestantya Dwike.Ariestantya@mail.ugm.ac.id Rika Harini Dwike.Ariestantya@mail.ugm.ac.id <p>Mangrove ecosystems have multiple functions which include economic and environmental functions. A well-proportionated mangrove ecosystem management would benefits optimally. The purpose of this study was to determine the most appropriate scenario for managing mangrove ecosystem side by side with aquaculture through an economic valuation to find out the management value with which the scenario is most beneficial both ecologically and economically. The data were collected through interviews using questionnaires, literature review, and institutional data. The data were processed through an economic valuation of total economic value (TEV) and cost-benefit analysis (CBA). The data were analysed spatially and descriptive-quantitatively. The total economic value of the mangrove ecosystems was USD 6.73 million. The benefit and costs of managing mangrove ecotourism were USD &nbsp;3,930.74/ha/year and USD &nbsp;1,701.69/ha/year, respesctively, where as the benefits and costs of managing ponds were USD 150,433.85/ha/year and USD 55,269.46/ha/year, respectively. The prioritized scenario of mangrove ecosystem management was a scenario with an ideal proportion of mangrove and ponds areas, i.e. 50:50 and total ecological and economic benefits for a period of 25 years of USD 19.17 million.</p> 2019-09-02T16:52:48+07:00 ##submission.copyrightStatement## http://ajstd.org/index.php/ajstd/article/view/574 Land Suitability Analysis for Housing in Pesisir Selatan Regency, West Sumatera 2019-09-03T08:27:10+07:00 Dyah Widiyastuti dwidiyastuti@gmail.com Heni Ermawati dwidiyastuti@gmail.com Lambang Septiawan dwidiyastuti@gmail.com Ignatius Salivian Wisnu Kumara dwidiyastuti@gmail.com <p>The increasing number of residents has an impact on the increasing need for living space. The diverse environmental conditions of the land cause impossibility for developing housing in every location. Therefore, spatial analysis is needed to determine land suitability for housing development to avoid environmental problems. The aims of this study were determining the projected land needs for housing and doing suitable area mapping for housing through spatial analysis using 5 physical parameters (slope, disaster vulnerability, river and beach border, and protected areas). The results show that the land needed for housing in Pesisir Selatan increase every year. By 2020, it is predicted that the land allocation for housing would be 15.6 km<sup>2</sup> – 51.15 km<sup>2</sup>. Based on the spatial analysis, the area which had high suitability (S1) for housing was 21.657%, the moderate suitability (S2) was 18.616%, low suitability (S3) was 6.782% and not suitable (N1) was 52.944%. It is predicted that in 2020, the government has to use the low suitability area although it has a more significant risk. Therefore, it is necessary to pay attention to the mitigation aspect and housing technique manipulation in steep slope area.</p> 2019-09-02T16:53:14+07:00 ##submission.copyrightStatement## http://ajstd.org/index.php/ajstd/article/view/580 Analytical Hierarchy Process for Regional Development Priority in Maluku Province 2019-09-03T08:27:52+07:00 Nur Medisyanning Khoiruluswati amellya.larasati@mail.ugm.ac.id Lia Amellya Larasati amellya.larasati@mail.ugm.ac.id Rizki Rahmi Aliyya amellya.larasati@mail.ugm.ac.id Unggul Widyanarko amellya.larasati@mail.ugm.ac.id Ratih Fitria Putri amellya.larasati@mail.ugm.ac.id <p class="Abstract" style="margin: 0cm 0cm .0001pt 94.5pt;"><span lang="EN-GB">Maluku is one of the provinces in the eastern part of Indonesia which consist of 11 regencies. Central Statistic Bureau of Maluku in 2018 reported that from 2013 until 2018 the number of poor populations in rural areas increased until 6.07 thousand people. Concurrently, the number of poor populations in urban areas decreased around 1.97 thousands people. That fact showed that the development in Maluku Province hadn't implemented effectively and equally. This study aims to determine the development priority in Maluku Province using AHP (Analytical Hierarchy Process) method. The determination of priorities based on 3 aspects in the Human Development Index (HDI) concept, such as education, health, and economy. Life expectancy, mean years of schooling, expected years of schooling, and per capita expenditure was the indicator from Central Statistic Bureau of Indonesia that used in this study. The result from this study showed that there are 10 regencies with a high level of priority except for Ambon cities which is a low-level priority. Classification of regencies showed that there was a disparity. This analysis can help to inform future development design in Maluku Province. </span></p> 2019-09-03T08:18:21+07:00 ##submission.copyrightStatement## http://ajstd.org/index.php/ajstd/article/view/579 Spatial Trends of Urban Physical Growth of Cities in Java 1975-2015 2019-09-03T08:28:22+07:00 Djaka Marwasta jakamar@ugm.ac.id <p>This paper discusses the spatial trends of urban physical growth of several cities in Java. Six cities in Java (Jakarta, Bandung, Semarang, Yogyakarta, Surabaya, and Malang) were chosen as samples to represent the characteristics of cities in Java using geographic settings consideration, including topography, city size, population density, and history of cities development. The objectives of this study are: (1) to understand the variations in physical growth of cities in Java; and (2) explain the spatial trends of urban physical growth of these cities based on their geographical settings. Multi-temporal Landsat satellite images were chosen as data sources to identify urban morphological development processes. Based on results of analysis, it is known that the physical growth of cities in Java has quite diverse variations in the aspect of urban settlements, infrastructure, and urban functions. However, the diversity of urban physical growth can be simplified into 4 types based on the dominant form of physical development. The four types are (1) compact-rounded city that is formed by densification process domination; (2) the spread-elongated city formed by the dominance of extensification process; (3) compact fan-shaped city that is formed by natural physical conditions; and (4) scattered-random city formed by leapfrogging process domination.</p> 2019-09-03T08:18:57+07:00 ##submission.copyrightStatement##