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ROAD NETWORK CONNECTIVITY AND FREIGHT TRANSPORTATION FOR SUPPORTING THE DEVELOPMENT OF THE NORTHERN ZONE OF ACEH

Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University 2019年第3期54卷

作者： Fithra, Herman Hasyim, Sirojuzilam Saleh, Sofyan M. Saputra, Jumadil Department of Civil Engineering Universitas Malikussaleh Reuleut Timur Muara Batu Aceh Utara 24355 Indonesia Doctoral Program of Regional Planning Universitas Sumatera Utara Padang Bulan Kec. Medan Baru Sumatera Utara Medan20155 Indonesia Department of Civil Engineering Universitas Syiah Kuala Kopelma Darussalam Syiah Kuala Banda Aceh23111 Indonesia School of Social and Economic Development Universiti Malaysia Terengganu Terengganu Kuala Nerus21030 Malaysia

Road network connectivity significantly affects merchandise, transport, and people’s lives. Freight transportation network models are utilized as frameworks of transport policy decisions to estimate the impacts of infrastructure projects on traffic. The goods supply delivery modes in Aceh, Indonesia, are dominated by road-based transportation, where up to 95% of daily needs, such as food, are carried using trucks, buses, and other vehicles. This condition emerged owing to a lack of infrastructure and facilities. Thus, the main purpose of this study is to analyze the effect of road network connectivity on goods delivery in the northern zone of Aceh. This research adopted a quantitative technique (survey questionnaire) and involved as many as 420 respondents. The data were analyzed using structural equation modeling (SEM) with Analysis of Moment Structures. The result of the study shows the value of regressions weight is 0.375 or 37.5%. It indicates the road network connectivity variable has a significant relationship with the transport of goods. Furthermore, the road network connectivity of the area has the strongest link or significantly influences the activities of regional development. Therefore, the government in the northern zone of Aceh can formulate road network policies oriented towards the development of the area’s new economy and support the implementation of the Arun Lhokseumawe Special Economic Zone, which is the business area and trade laws are different from the rest of the country. © 2019 Science Press. All rights reserved.

关键词： Freight transportation

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Knowledge, Awareness, and Resilience of Earthquake and Tsunami Disaster Risk Reduction in Coastal Area

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Journal of Physics: Conference Series 2021年第1期1811卷

作者： Rr M I Retno Susilorini Rina Febrina Helmia Adita Fitra Juniastel Rajagukguk Dhiyan Krishna Wardhani B Y Arya Wastanimpuna Laurel Lia Nola Prameswari Department of Infrastructure and Environmental Engineering Faculty of Environmental Science and Technology Soegijapranata Catholic University Semarang 50234 Central Java Indonesia Department of Civil Engineering Faculty of Engineering Malahayati University Bandar Lampung 35153 South Sumatera Indonesia Department of Regional and Urban Planning Sumatera Institute of Technology South Lampung 35365 South Sumatera Indonesia Department of Physics Faculty of Mathematics and Natural Sciences Universitas Negeri Medan Medan 20221 North Sumatera Indonesia Doctoral Program of Digital Architecture Faculty of Architecture and Design Soegijapranata Catholic University Semarang 50234 Central Java Indonesia

Indonesia is earthquake and tsunami prone areas, included Sumatera Island. Bandar Lampung is also vulnerable to earthquake and tsunami, especially Kangkung fishing village in Lampung Bay. Disaster risk reduction is very important to be implemented in the cases of earthquake and tsunami, which can save more life and build resilience in facing the hazard. This research aimed to study how the knowledge, awareness, and resilience of people in Kangkung fishing village can strengthen the earthquake and tsunami disaster risk reduction. This research conducted by quantitative methods. Survey and interview of 53 respondents were conducted as well as data collecting approached by purposive sampling. The results found that there is little knowledge and awareness of people in Kangkung fishing village of the hazard of earthquake and tsunami. Therefore, this research proposed a model of 'Community-Based Resilience Strategy' Model of earthquake and tsunami disaster risk reduction. It is a comprehensive and sustainable model of how people take a part in disaster risk reduction by intensive participatory. Conclusion of this research emphasized that disaster risk reduction is a big matter in marginalized society such as people in Kangkung fishing village. The 'Community-Based Resilience Strategy' Model of earthquake and tsunami disaster risk reduction that may increase the knowledge and awareness to become more resilience.

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The Effect of Project Based Learning Towards Student Achievement in Electrical Machines and Energy Conversion Subject

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Journal of Physics: Conference Series 2019年第1期1387卷

作者： Ambiyar Ambiyar Nurzamaliah Afifah Department of Mechanical Engineering Engineering Faculty Universitas Negeri Padang Indonesia Lecturer of Magister and Doctoral Program Engineering Faculty Universitas Negeri Padang Indonesia Magister Student of Vocational and Technical Education Program Engineering Faculty Universitas Negeri Padang Indonesia

The purpose of this study was to reveal the project-based learning model with conventional learning models of student learning outcomes. This type of research was quasi experimental research design. Quasi experiments used post-test only design with two random groups for experimental and control classes. The sample in this research was 64 students. The instrument used to measure student learning outcomes is a multiple choice objective test with five option. Data were analyzed using t test. The results of data analysis showed that there were significant differences in the learning outcomes of Electrical Machine and Conversion Energy subjects that were significant between students in the experimental class taught using the project based learning learning model for students in the control class taught by conventional learning models. The average value of experimental class is 82 is higher than the average control class is 73. Based on the above two learning activities, it can be concluded that using the project based learning model further improves students learning outcomes in Electrical Machine and Conversion Energy subjects compared with conventional methods of learning.

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Thermoelectric Properties of Misfit Layered Bismuth-Based Rhodium Oxides, (Bi,Pb)2Sr2Rh2Oy

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Journal of Materials Science and Chemical engineering 2018年第7期6卷 97-103页

作者： Takuya Watanabe Hiroshi Irie Special Doctoral Program for Green Energy Conversion Science and Technology Interdisciplinary Graduate School of Medicine and Engineering University of Yamanashi Yamanashi Japan Clean Energy Research Center University of Yamanashi Yamanashi Japan

Rhodium oxides, including a misfitlayered structure with alternate stacking of a rock salttype layer and a hexagonal RhO2 layer, are expected to have good thermoelectric properties. Among them, the thermoelectric properties (electrical conductivity (σ), Seebeck coefficient (S), Figure of merit (ZT) and calculated thermal conductivity (κ) by S, σ, ZT, and absolute temperature (T)) of bismuth-based rhodium oxides ((Bi1-x,Pbx) 2Sr2Rh2Oy, x = 0 and 0.02, hereafter BSR and BPSR, respectively) were investigated. In comparison with Bi2Sr2Co2Oy (BSC) at 700°C, S and κ enhanced (increased S, 110 (BSR) and 105 μV K-1 (BPSR) from 85 μV K-1 (BSC) and decreased κ, 0.32 (BSR) and 0.50 W m-1 K-1 (BPSR) from 1.75 W m-1 K-1 (BSC)), whereas σ decreased (15 (BSR) and 31 S cm-1 (BPSR) from 70 S cm-1 (BSC)). BPSR reached the highest ZT value of 0.067 at 700°C, compared to those of 0.056 (BSR) and 0.027 (BSC).

关键词： Electroceramics Layered Rhodium Oxide Misfit Layer Structure Thermoe-lectric Material Harman Method

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Implementation of Various Artificial Intelligence Approach for Prediction and Recommendation of Personality Disorder Patient

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Journal of Physics: Conference Series 2021年第1期1751卷

作者： H Sulistiani K Muludi A Syarif Doctoral Program of Mathematics and Natural Sciences Faculty University of Lampung Jl. Sumantri Brojonegoro No. 1 Bandar Lampung Indonesia. Faculty of Engineering and Computer Science Universitas Teknokrat Indonesia Jl. ZA. Pagaralam No. 9-11 Bandar Lampung Indonesia. Department of Computer Science Faculty of Mathematics and Science University of Lampung Jl. Sumantri Brojonegoro No. 1 Bandar Lampung Indonesia.

Personality disorder is known as chronic psychological disorders. It is a serious problem of the individual character and behavior that affect work, family and social life of a person. In many cases, the possibility of people do not realize that they have a personality disorder as a way of thinking and behaving seems natural to the patient, and the patient may blame others. To diagnose a personality disorder early, it is necessary to develop a system that is able to predict personality disorders and recommendation type of therapy patients should undergo. Artificial Intelligence is a technique that is very popular today. Various kinds of approaches and algorithms can be applied in the world of health, such as expert systems, neural networks and fuzzy logic. The aim of this study is to assess the artificial intelligence approach in predicting and recommending the type of therapy for patients with personality disorders.

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Unit processes identification of maintenance on rigid and flexible pavement of local road

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IOP Conference Series: Materials Science and engineering 2019年第1期615卷

作者： F S Handayani F P Pramesti A Setyawan Doctoral Program in Civil Engineering Faculty of Engineering Sebelas Maret University Surakarta Indonesia Civil Engineering Department Faculty of Engineering Sebelas Maret University Surakarta Indonesia

Maintenance and rehabilitation as parts of pavement's life cycle become more important since it's an effort to restore the road condition as planned. This process will produce the emission of greenhouse gases that give an impact to the environment. The Live Cycle Assessment (LCA) was used to estimate the GHG's emissions. With LCA we could identify the unit process that will produce the GHG's emissions during maintenance and rehabilitation of road pavement. This research aimed to identify the unit processes of the maintenance and rehabilitation of rigid and flexible pavement and to analyse the amount of GHG emitted during this process. Four local roads in Indonesia were investigated as case studies. The result indicated the amount of energy of the unit processes as well as the GHG amount. This will lead to the identification of the hotspot of flexible and rigid pavement maintenance process. In rigid pavement maintenance activities, the hotspots included the asphalt transport process to asphalt mixing plant, cement transportation to the batching plant, and cement processing. Meanwhile, in flexible pavement maintenance activities, the hotspots were the asphalt transportation to asphalt mixing plant, transportation aggregate, and transportation to site.

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Conversion of rubber seed oil into biodiesel with potassium oxide alumina supported by (K2O/Al2O3) catalyst

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IOP Conference Series: Materials Science and engineering 2020年第1期980卷

作者： J A Karo Karo H Husin F Nasution F T Yani S Maliki D D Prayuda F Hasfita Baristan Industri Medan Badan Penelitian dan Pengembangan Industri Kementerian Perindustrian Medan Indonesia Doctoral Program School of Engineering Universitas Syiah Kuala Banda Aceh Indonesia 23111 Reaction Engineering and Catalysis Laboratory Department of Chemical Engineering Universitas Syiah Kuala Banda Aceh Indonesia 23111 Department of Chemical Engineering Malikussaleh University Lhoekseumawe 24300 Aceh Utara Indonesia

In this paper, we report the synthesis of K2O/Al2O3 for its application as a catalyst in the transesterification reaction for biodiesel production from rubber seed oil. So far, biodiesel production has been done through transesterification of vegetable oils through homogeneous catalysts, such as NaOH and KOH. Heterogeneous catalysts are more advantageous because they are easy to separate from the products, have less corrosion, and can be reused. This study aims to investigate the effectiveness of potassium oxide alumina-supported (K2O/Al2O3) solid catalysts to convert rubber seed oil into biodiesel. The K2O/Al2O3 catalyst was synthesized by impregnating KOH on the support of Al2O3 through the inception wetness method. The catalysts were characterized by scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX) to detect surface structure, composition, and active phase of the catalyst. EDX analysis indicated that the catalyst consisted of 36.41% potassium, 32.89%, and 30.7% oxygen. The reaction was conducted in a two-neck glass reactor at a temperature of 65°C, methanol to oil ratios of 10:1, during 1.5 h. The yield of biodiesel was achieved up to 96.9% at the ratio KOH: Al2O3 of 7.5: 2.5.

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Reduction of BOD and COD of by using stratified filter and constructed wetland for blackwater treatment

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IOP Conference Series: Materials Science and engineering 2019年第1期469卷

作者： Lies Kurniawati Wulandari M Bisri Donny Harisuseno Emma Yuliani Doctoral Program in Civil Engineering Faculty of Engineering Brawijaya University Indonesia Civil Engineering Department Postgraduate Program Malang National Institute of Technology Indonesia Water Resources Engineering Department Faculty of Engineering Brawijaya University Indonesia Civil Engineering Department Faculty of Engineering Brawijaya University Indonesia

Blackwater is a type of domestic wastewater that must be processed before discharge into the river. This study uses gravel, sand, and charcoal as filtration materials which arranged from coarse to fine, and also wetland system using Vetiver grass (Vetiveria zizanioides) and Cattail (Typha angustifolia). The treatment process is obtained by applying different treatments related to the sand thickness and blackwater residence time in the wetland. The focus of observation is emphasized on the measurement of BOD (Biological oxygen demand) and COD (Chemical oxygen demand). Both parameters measured and compared with the standard of water for agricultural purposes (Grade IV) regulated by Indonesian Government. The results showed that stratified filters can reduce the levels of BOD and COD effectively. The final results obtained after blackwater flowed through the wetland tube shows that BOD and COD levels have yet to meet the standard of grade IV water, although the overall result indicated the significant reduction of both parameters. This can be related to the input of organic matter from wetland itself, and it also can be considered an indication that blackwater treatment requires longer residence time.

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Abilities of stratified filter and wetland to reduce TDS and TSS in blackwater domestic waste

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IOP Conference Series: Materials Science and engineering 2019年第1期469卷

This study aimed to devisea new design of domestic waste treatment which can produce an output of class IV water (irrigation water) based on measurement of TDS (Total Dissolved Solid) and TSS (Total Suspended Solid) parameters. The physical model tested in this research wasa stratified filter consisting of compositionsfrom coarse to fine materialsnamely gravel, charcoal and sand. Furthermore, filtering blackwater waste was refined by remediation with Cattail (Typha Angustifolia) and Vetiver (Vetiveria Zizanoides). The physical model of WWTP was set to 1:25 added by a stratified filter in the upstream section. Observations were done by measuring blackwater TDS levels prior to treatment, after going through a stratified filter, and after going through a remediation process with aquatic plants. The results showed that stratified filters and wetland can reduce TDS levels in blackwater until it reached the standard for irrigation water.

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Thermodynamic Analysis of Two-Phase Ejector as Expansion Device with Dual Evaporator Temperatures on Split Type Air Conditioning Systems

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IOP Conference Series: Materials Science and engineering 2019年第1期494卷

作者： M E Arsana I G B Wijaya Kusuma M Sucipta I N Suamir Doctoral Engineering Science study Program Faculty of Engineering Udayana University Denpasar Bali Indonesia Mechanical Engineering Department Bali State Polytechnic Bali 80364 Indonesia

This paper presents a numerical and experimental study of increasing the performance coefficient (COP) of split AC (SAC) by reducing compressor work and increasing cooling capacity. Two phase ejector as an expansion device with a new design of dual evaporator temperature used. numerical methods apply the mathematical model developed in the EES software that is applied. Thermodynamic analysis is carried out to achieve ASHRAE Standard requirements for a minimum SAC with COP application of 3.5. The SAC system is filled with R-290 as a thermal fluid medium. Based on the simulation results a numerical model of the ejector is then produced and installed in a modified SAC system of cooling capacity of at least 9000 BTU/hour. An experimental test was conducted to investigate the actual performance of the ejector and its effect on the performance of the SAC system. The results showed that the two phase ejector with the new design of the dual evaporator temperature system was successful. When compared to standard split air conditioners using capillary tube expansion devices the tested ejector system contributes around 35% of power savings. The COP of the system can reach 5.5 which accounts for 39% of the increase in performance.

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