asep suheri - Academia.edu (original) (raw)

Papers by asep suheri

3BIO: Journal of Biological Science, Technology and Management, 2019

Local community's activities around Labanan forest area for specific purposes already make the ar... more Local community's activities around Labanan forest area for specific purposes already make the area unsafe. Responding to this, land productivity optimization with agroforestry patterns might be applied in the area. Hopefully, through these systems, utilization and productivity of natural forests in Labanan forest area might be optimized in producing food, energy and water conservation, outside its regular function as forestry area. The purpose of this study was to determine the condition of the land under treeing forest; generate analytical data of vegetation in the research plots; and determine carbon stocks undergrowth. The research method was soil sampling, vegetation analyzes and sampling of undergrowth plant biomass. Based on laboratory analysis result, soil pH ranging between 5-7, N Total <0.3%, P Total <49 mg P2O5.100g-1 , K Total between 2-8 mg K2O.100g-1 , and the organic carbon content on soil <2.1%. The vegetations dominated by cunday (Saraca declinata) as many as 43 trees/ha with basal area 21.55 m 2. ha-1. The highest important value index (IVI) shown by the type of vegetation cunday (Saraca declinata) amounted to 51.43% and the lowest was shown by bintangur (Callophyllum sp) amounted to 2.89%. Stock carbon undergrowth on research area ranged from 1.470 to 1.752ton C. ha-1 .

European Journal of Wood and Wood Products, 2019

Jabon wood (Anthocephalus cadamba Miq.) and coconut fibres currently appear to be the most viable... more Jabon wood (Anthocephalus cadamba Miq.) and coconut fibres currently appear to be the most viable raw material alternative in wood-based industries. This study examines the hybrid composites incorporating the Jabon trunk veneer and coconut fibres in a plywood product and analyses its properties. The samples were arranged into five-ply hybrid plywoods based on coconut fibre arrangements, comprising coconut woven fibre mats (HPWF) and coconut non-woven fibre mats (HPRF). Hybrid plywood with a thickness of 14 mm was cold pressed and hot pressed using urea formaldehyde (UF) and phenol formaldehyde (PF) resin, respectively. The dimensional stability and mechanical properties of the Jabon plywood and hybrid plywood composites were analysed. The hybridisation of coconut fibres with the Jabon trunk improved the dimensional stability and mechanical properties of plywood, such as its density, thickness swelling, bending, and screw withdrawal, especially for hybrid plywood using PF. Similarly, HPRF also demonstrated an increase in dimensional stability and mechanical properties. The weak bonding interface between the coconut fibre and formaldehyde matrix caused fibre-pull-out to happen in the hybrid plywood composite. The HPRF had better properties than HPWF. Statistical analyses show that coconut fibre arrangement of woven mats, and non-woven mats, and types of adhesive of UF, and PF did affect dimensional stability and mechanical properties, even though the interaction between the two did not affect density.

Journal of the Indian Academy of Wood Science, 2018

ABSTRAK:Sistem penginderaan jauh ERS-SAR menggunakan sensor aktif yang memanfaatkan sinyal radar ... more ABSTRAK:Sistem penginderaan jauh ERS-SAR menggunakan sensor aktif yang memanfaatkan sinyal radar dari gelombang mikro yang dipancarkan sendiri, sehingga dapat beroperasi siang dan malam dalam segala cuaca. Sebaliknya penginderaan jauh sistem sensor optis/kamera seperti pada landsat-5 TM memanfatkan sinar tampak dan merah infra yang sangat tergantung pada sinar matahari, hanya dapat beroperasi pada siang hari. Penggunaan citra TM sudah dikenal dan sangat efektif untuk pengenalan obyek di bumi, namun sering menemui kendala penutupan awan, hujan, karena gelombang sinar tampak dan infra merah tidak dapat menembus awan. Sebaliknya kemampuan SAR untuk membedakan obyek di bumi agak sulit karena selain saluran tunggal juga didasarkan pada beda sifat fisik obyeknya yakni kekasapannya. Untuk memperoleh hasil analisis citra optimal, kelebihan dari citra radar dan citra optik dicoba digabungkan. Dalam proses penggabungan kedua citra, terlebih dahulu dilakukan penyamaan harga bit citra, yang dilanjutkan dengan pengkoreksian kesalahan radiometrik dan geometrik. Pengenalan obyek di bumi dari citra hasil gabungan dilakukan melalui pengklasifikasian dengan metode terbimbing. Hasil penelitian menunjukan bahwa basil penggabungan kedua citra memberikan ketajaman citra akan tetapi tidak memberikan tambahan interpretasi pengenalan obyek. Adapun citra gabungan yang memberikan ketajaman citra yang paling bagus adalah dengan komposisi TM band-4 merah, rata-rata band 2 dan 3 hijau, dan SAR biro.

Jurnal Pajak dan Keuangan Negara, Mar 31, 2022

Tax incentives on green buildings are one way to increase green building growth. Tax incentives h... more Tax incentives on green buildings are one way to increase green building growth. Tax incentives have been carried out in several countries in various forms. This study analyzes the existing literature to compare implementation in several countries, existing incentives, findings on the provision of incentives, and strategies for providing incentives. From the results of the study, it is known that there are several differences in the provision of incentives such as in the form of deductions, deductions, taxes on property or other taxes, given once or for several years, criteria for residential or commercial buildings, and carried out at the central or regional government level. In its implementation, all countries require the involvement of a third party to provide eco-labelling as a basis for providing incentives. Although there are criticisms of the risk of a third party conflict of interest, with localization of policies at the regional level, the supervisory mechanism will be more effective and efficient.

This research aims to create a model for predicting clean water need in the urban area Sentul Cit... more This research aims to create a model for predicting clean water need in the urban area Sentul City currently and next 30 (thirty years). To create the model, it is required data which are useful for forecasting the inhabitant number year to year. There are some general-used models for forecasting the inhabitant number, including to arithmatic, exponential, and least square method. The inhabitant number forecast in this research used an exponential method, as recommended in the Guidance of River Area Water Resource by Directorate General of Water Resource in 2001. The researcher used the software Stella 9.0.1 for simplifying the modeling process, projecting the inhabitant number, predicting the clean water need, and figuring the graphics. Besides this software, Excel programme was also used. According to data analysis result, the equation models to predict water need (m3/year) in Sentul City are stated as follows; for rural area inhabitants: YDn = 1 927 309 (1 + 0.0303)n; for urban a...

The purpose of this study is to create a peak runoff model in urban SC areas based on existing la... more The purpose of this study is to create a peak runoff model in urban SC areas based on existing land use/land cover (LU / LC) and a master plan. To calculate peak runoff (PRO) using the rational method. To find out the current LU / LC through existing SPOT-6 image analysis in 2017, using supervised classification method with an estimation of gamma distribution parameters with the maximum likelihood method using QGIS 2.8 software, SAGA GIS, and Arc -GIS 10.4.1. Based on the results of image analysis obtained twelve types of LU, which can be grouped into three types of LC, namely 33% of developed land, 65% of vegetated land (RTH), and 2% of blue open land (RTB). The analysis shows that the implementation of the master plan increases PRO. With the increase in PRO will contribute to flooding in the downstream areas, consequently the developer must be responsible for reducing the PRO.

MIMBAR : Jurnal Sosial dan Pembangunan

This study aims to predict the current and future demand for clean water, and efforts to develop ... more This study aims to predict the current and future demand for clean water, and efforts to develop clean water supply from a social aspect in Sentul City (SC). To estimate the need for clean water, it is predicted from the total population from year to year. Forecasting population in this study uses arithmetic and geometric methods, while Stella software is used to facilitate the analysis. Starting in 2030, it is estimated that SC will experience water shortages. The Community Based Drinking Water Supply and Sanitation or PAMSIMAS program and installation of smart tanks are proposed to overcome the problem water shortage of rural residents in SC. Meanwhile, for urban residents, they can collect rainwater that falls on the roofs of houses and collect it in smart tanks. The implementation of PAMSIMAS program and the installation of smart tanks in SC has an important function as a supplier of backup raw water sources to overcome current and future shortages of clean water.

3BIO: Journal of Biological Science, Technology and Management, 2019

Local community's activities around Labanan forest area for specific purposes already make the ar... more Local community's activities around Labanan forest area for specific purposes already make the area unsafe. Responding to this, land productivity optimization with agroforestry patterns might be applied in the area. Hopefully, through these systems, utilization and productivity of natural forests in Labanan forest area might be optimized in producing food, energy and water conservation, outside its regular function as forestry area. The purpose of this study was to determine the condition of the land under treeing forest; generate analytical data of vegetation in the research plots; and determine carbon stocks undergrowth. The research method was soil sampling, vegetation analyzes and sampling of undergrowth plant biomass. Based on laboratory analysis result, soil pH ranging between 5-7, N Total <0.3%, P Total <49 mg P2O5.100g-1 , K Total between 2-8 mg K2O.100g-1 , and the organic carbon content on soil <2.1%. The vegetations dominated by cunday (Saraca declinata) as many as 43 trees/ha with basal area 21.55 m 2. ha-1. The highest important value index (IVI) shown by the type of vegetation cunday (Saraca declinata) amounted to 51.43% and the lowest was shown by bintangur (Callophyllum sp) amounted to 2.89%. Stock carbon undergrowth on research area ranged from 1.470 to 1.752ton C. ha-1 .

European Journal of Wood and Wood Products, 2019

Jabon wood (Anthocephalus cadamba Miq.) and coconut fibres currently appear to be the most viable... more Jabon wood (Anthocephalus cadamba Miq.) and coconut fibres currently appear to be the most viable raw material alternative in wood-based industries. This study examines the hybrid composites incorporating the Jabon trunk veneer and coconut fibres in a plywood product and analyses its properties. The samples were arranged into five-ply hybrid plywoods based on coconut fibre arrangements, comprising coconut woven fibre mats (HPWF) and coconut non-woven fibre mats (HPRF). Hybrid plywood with a thickness of 14 mm was cold pressed and hot pressed using urea formaldehyde (UF) and phenol formaldehyde (PF) resin, respectively. The dimensional stability and mechanical properties of the Jabon plywood and hybrid plywood composites were analysed. The hybridisation of coconut fibres with the Jabon trunk improved the dimensional stability and mechanical properties of plywood, such as its density, thickness swelling, bending, and screw withdrawal, especially for hybrid plywood using PF. Similarly, HPRF also demonstrated an increase in dimensional stability and mechanical properties. The weak bonding interface between the coconut fibre and formaldehyde matrix caused fibre-pull-out to happen in the hybrid plywood composite. The HPRF had better properties than HPWF. Statistical analyses show that coconut fibre arrangement of woven mats, and non-woven mats, and types of adhesive of UF, and PF did affect dimensional stability and mechanical properties, even though the interaction between the two did not affect density.

Journal of the Indian Academy of Wood Science, 2018

ABSTRAK:Sistem penginderaan jauh ERS-SAR menggunakan sensor aktif yang memanfaatkan sinyal radar ... more ABSTRAK:Sistem penginderaan jauh ERS-SAR menggunakan sensor aktif yang memanfaatkan sinyal radar dari gelombang mikro yang dipancarkan sendiri, sehingga dapat beroperasi siang dan malam dalam segala cuaca. Sebaliknya penginderaan jauh sistem sensor optis/kamera seperti pada landsat-5 TM memanfatkan sinar tampak dan merah infra yang sangat tergantung pada sinar matahari, hanya dapat beroperasi pada siang hari. Penggunaan citra TM sudah dikenal dan sangat efektif untuk pengenalan obyek di bumi, namun sering menemui kendala penutupan awan, hujan, karena gelombang sinar tampak dan infra merah tidak dapat menembus awan. Sebaliknya kemampuan SAR untuk membedakan obyek di bumi agak sulit karena selain saluran tunggal juga didasarkan pada beda sifat fisik obyeknya yakni kekasapannya. Untuk memperoleh hasil analisis citra optimal, kelebihan dari citra radar dan citra optik dicoba digabungkan. Dalam proses penggabungan kedua citra, terlebih dahulu dilakukan penyamaan harga bit citra, yang dilanjutkan dengan pengkoreksian kesalahan radiometrik dan geometrik. Pengenalan obyek di bumi dari citra hasil gabungan dilakukan melalui pengklasifikasian dengan metode terbimbing. Hasil penelitian menunjukan bahwa basil penggabungan kedua citra memberikan ketajaman citra akan tetapi tidak memberikan tambahan interpretasi pengenalan obyek. Adapun citra gabungan yang memberikan ketajaman citra yang paling bagus adalah dengan komposisi TM band-4 merah, rata-rata band 2 dan 3 hijau, dan SAR biro.

Jurnal Pajak dan Keuangan Negara, Mar 31, 2022

Tax incentives on green buildings are one way to increase green building growth. Tax incentives h... more Tax incentives on green buildings are one way to increase green building growth. Tax incentives have been carried out in several countries in various forms. This study analyzes the existing literature to compare implementation in several countries, existing incentives, findings on the provision of incentives, and strategies for providing incentives. From the results of the study, it is known that there are several differences in the provision of incentives such as in the form of deductions, deductions, taxes on property or other taxes, given once or for several years, criteria for residential or commercial buildings, and carried out at the central or regional government level. In its implementation, all countries require the involvement of a third party to provide eco-labelling as a basis for providing incentives. Although there are criticisms of the risk of a third party conflict of interest, with localization of policies at the regional level, the supervisory mechanism will be more effective and efficient.

This research aims to create a model for predicting clean water need in the urban area Sentul Cit... more This research aims to create a model for predicting clean water need in the urban area Sentul City currently and next 30 (thirty years). To create the model, it is required data which are useful for forecasting the inhabitant number year to year. There are some general-used models for forecasting the inhabitant number, including to arithmatic, exponential, and least square method. The inhabitant number forecast in this research used an exponential method, as recommended in the Guidance of River Area Water Resource by Directorate General of Water Resource in 2001. The researcher used the software Stella 9.0.1 for simplifying the modeling process, projecting the inhabitant number, predicting the clean water need, and figuring the graphics. Besides this software, Excel programme was also used. According to data analysis result, the equation models to predict water need (m3/year) in Sentul City are stated as follows; for rural area inhabitants: YDn = 1 927 309 (1 + 0.0303)n; for urban a...

The purpose of this study is to create a peak runoff model in urban SC areas based on existing la... more The purpose of this study is to create a peak runoff model in urban SC areas based on existing land use/land cover (LU / LC) and a master plan. To calculate peak runoff (PRO) using the rational method. To find out the current LU / LC through existing SPOT-6 image analysis in 2017, using supervised classification method with an estimation of gamma distribution parameters with the maximum likelihood method using QGIS 2.8 software, SAGA GIS, and Arc -GIS 10.4.1. Based on the results of image analysis obtained twelve types of LU, which can be grouped into three types of LC, namely 33% of developed land, 65% of vegetated land (RTH), and 2% of blue open land (RTB). The analysis shows that the implementation of the master plan increases PRO. With the increase in PRO will contribute to flooding in the downstream areas, consequently the developer must be responsible for reducing the PRO.

MIMBAR : Jurnal Sosial dan Pembangunan

This study aims to predict the current and future demand for clean water, and efforts to develop ... more This study aims to predict the current and future demand for clean water, and efforts to develop clean water supply from a social aspect in Sentul City (SC). To estimate the need for clean water, it is predicted from the total population from year to year. Forecasting population in this study uses arithmetic and geometric methods, while Stella software is used to facilitate the analysis. Starting in 2030, it is estimated that SC will experience water shortages. The Community Based Drinking Water Supply and Sanitation or PAMSIMAS program and installation of smart tanks are proposed to overcome the problem water shortage of rural residents in SC. Meanwhile, for urban residents, they can collect rainwater that falls on the roofs of houses and collect it in smart tanks. The implementation of PAMSIMAS program and the installation of smart tanks in SC has an important function as a supplier of backup raw water sources to overcome current and future shortages of clean water.