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Specta Journal of Technology
Published by Institut Teknologi Kalimantan
ISSN : 25492713     EISSN : 26229099     DOI : https://doi.org/10.0610/specta.v2i3
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Environmental Science
SPECTA journal is published by Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Teknologi Kalimantan, Balikpapann Indonesia. SPECTA is an open-access peer reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in the field of Physics, Mathematics, Mechanical Engineering, Electrical Engineering, Chemical Engineering, Materials and Metallurgy, Civil Engineering, Industrial Engineering, Naval Engineering, Urban Planning, Informatics, Information System, Environmental Engineering, and Ocean Engineering. SPECTA accepts submission from all over the world, especially from Indonesia.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 260 Documents
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Penerapan Algoritma Kalman Filter dalam Prediksi Kecepatan Angin di Kota Balikpapan Fitria, Irma; Hasanah, Primadina
SPECTA Journal of Technology Vol 1 No 2 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v1i2.78

Abstract

One of the climate?s elements that has an influence on daily activities is the wind speed. Wind is a movement of air that flows from high pressure to low pressure region. In the shipping and aviation, wind speed is a very important thing to predict. This is due to the wind speed is very influential on the process of the transportation activities. A strong wind can disturb the fluency of transportation. Therefore, information regarding the wind speed prediction is very important to know. In this paper, Kalman Filter algorithm is applied in the wind speed prediction by taking the case in Balikpapan. In this case, the Kalman Filter algorithm is applied to improve the result of ARIMA prediction based on error correction, so we get the prediction result, called ARIMA-Kalman Filter. Based on the simulation result in this study, it can be shown that the prediction result of ARIMA-Kalman Filter is better than ARIMA?s. This is known from the level of accuracy from ARIMA-Kalman Filter, which increased about 65% from ARIMA result.
Faktor-Faktor di Industri Galangan Kapal yang Dapat Berkontribusi pada Isu Perubahan Iklim Hidayat, Taufik
SPECTA Journal of Technology Vol 1 No 2 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v1i2.79

Abstract

The shipbuilding industry is the fabrication industry in sectors involving the use of heavy equipment materials and manufacturing practices can have an impact on the environment and thus can contribute to climate change. This study reviewed the literature to use the approach can imagine a process that impact on the environment, and occurs in the shipbuilding industry. The hope can give the shipbuilding industry a chance to set a long-term vision on an individual basis, not because in the end was forced to make as a result of coercion by the government or the pressure of the surrounding community, but also address the environmental impact more effectively, and perhaps even get a commercial advantage from the innovations developed. This can be realized with the implementation of management strategies. Management strategy is a series of decisions and managerial actions that determine the long-term performance of the corporation. Where this includes environmental-scanning (external and internal), strategy formulation (planning long-term strategy), strategy implementation, and evaluation and control. So this study emphasizes the monitoring and evaluation of external opportunities and threats on the strengths andweaknesses of the corporation. The results of this study establish a six-facto-a major factor in the shipbuilding industry that can contribute to climate change, namely material handling, metal working, the noise, the government and the surrounding community, the level of technology, and ship recycling.
Asesmen Aliran Kritis Sistem Pengelolaan Sampah Perkotaan di TPA Sampah Annisa, Bismi
SPECTA Journal of Technology Vol 1 No 2 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v1i2.80

Abstract

Capacities of Cipayung landfill (final processing) has exceeded capacity. The composition of organic waste is the most dominant waste composition. This study aims to assess the critical flow of municipal solid waste management system in the Cipayung landfill thus be predicted or estimated improvement of waste management system in the landfill Cipayung. The research method using MFA STAN software for a period of one year beginning in 2017 until 2018. The results of this study are critical flow of waste management systems are in the process of sorting and empowerment are still done manually, so the impact on increasing the amount of garbage residue will be dumped in Cipayung landfill. Waste composition which includes the critical flow is organic waste, plastic, paper, glass and aluminum. All materials that are at a critical flow still can be empowered using mechanical sorting machines garbage. Management recommendation is to apply the technology of recycling, composting and RDF feedstock. The government should establish cooperation with the private sector to process waste into resources that extend the life of landfill serviceability. Through optimization scenario 1, the critical flow of waste management systems can be improved with a reduction of more than 50% of the waste to be dumped into landfill Cipayung.
The Change of Land Cover and Biocapacity of CO2 Gas Emission Absorption in Gresik Urban Area Ghozali, Achmad; Nurrahman, Fery Irfan; Santoso, Eko Budi
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v1i3.81

Abstract

Gresik urban area is dominated by industrial, housing, trade and services activities. The growth of activities contributes to the land use change from green open spaces into built-up areas. The impact of land use change influence the level of air pollution and CO2 gas emission in Gresik urban area. The previous study briefly shows that this urban area produces 50.37% of the total CO2 gas emissions. The production of CO2 gas emissions should be controlled to reduce the impact of climate change in urban areas such as increasing urban temperature, hydrological cycle anomaly, drought, land degradation and other social and environmental issues. The green open space can recycle the CO2 gas emissions and can increase the absorption capacity of the CO2 gas emissions (bio-capacity). The land cover change for built-up area potentially reduces the absorption of CO2 gas emissions in Gresik urban area. Therefore the identification of the land cover change on CO2 emission absorption becomes an objective of this study. The preliminary study can formulate the strategic steps in the development of Gresik urban area that supports urban greenery and adaptive effort to respond the climate change. The study is conducted in two steps. The first step is to analysis the land cover change based on the Landsat satellite imagery analysis. The second step is to measure the dynamic change of the region's ability(bio-capacity) to absorb CO2 emissions by using ecological footprint analysis. The results show that Gresik urban area has a high development of developed land to the North area, Manyar Sub District. The growth of the developed land is more converting the fishpond land. The green areas in this regiontend to be influenced by farming activities which also convert into fishpond land. Bio-capacity of CO2 gas emission absorption increases from 2003 of 3.548 gha to 5.656 gha but the comparison between bio-capacity of CO2 gas emission absorption and developed land shows the declining tendency in each year. In 2003, the comparison score is 1.59 gha/ha of developed land. In 2014, the score is declining into 1.48 gha/ha or developed land.
The Development of Space Surveillance Settlement Concept in Pesantren Gadingmangu Perak Jombang Kurniadi, Kurniadi; Tontowi, Arif Jauhar; Wahyudi, Eko
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v1i3.83

Abstract

The existence of Gadingmangu Pesantren in the middle of the global can become one of the interesting object to study, considering that this pesantren is improved of education area. Since the beginning of this pesantren, they have lived in harmony with the community. If observed, there is a strong will to protect traditional culture in the middle of the global culture this day.There are three problem which considered in this research. First is to see how the interaction process between the pesantren and the surrounding societies, and which space and environment setting have a function as media for social interaction between the pesantren and the neighbourhood. Second, how is the attitude and behavior of the community about the existence of Gadingmangu Pesantren settlement. The aims of this study is to see cultural values of pesantren which used in the settlement.Methodology used is field research to study physical and non physical aspect intensively. Area of architecture, environment psychology, and sociology, covers settlement and cultural values of pesantren at Gadingmangu. The research results is to find the concept of space surveillance settlement can be considered by physical aspects. Physically, there is a setting which reflect strong interaction between the pesantren Gadingmangu and the settlement nearly.
Pengetahuan, Persepsi dan Sikap Generasi Muda Tentang Perubahan Iklim dan Pengaruhnya Terhadap Niat Perilaku Pro-Lingkungan Harmuningsih, Dian; Saleky, Saul Ronald Jacob
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v1i3.84

Abstract

Climate change continues to occur and have an impact for the survival of mankind. Climate change is not only a natural phenomenon, but also includes contributions from the behavior of the human. Hence need for awareness and goodwill of all parties, especially the young generation, to reduce the impact of climate change. This study aimed to analyze the influence of factors of knowledge, perception and attitude towards pro-environmental behavior intention of the young generation. By using multiple regression analysis, the results of this study show that the factor of knowledge, perceptions and attitudes about climate change have a positive influence and significant to pro-environmental behavior intention of the young generation. Furthermore, of these factors, the perceptions of the climate change are factors that have a more dominant influence on the intention proenvironmental behavior of the young generation. Thus, in order to further grow and develop the intention of young people to behave in a pro-environment, for they need to be given opportunities and greater access to resources and information channels to increase their knowledge related to environmental strategic issues, especially climate change and its impacts, so with the knowledge that will shape their perceptions better on climate change and, in turn, will form a more empathetic attitude. For that, the one way can be used is to empower organizations where they are working as a means to increase knowledge, shape perceptions and attitudes and arouse their intentions to behave pro-environment, through the activity of an organized, planned and organized.
Pengaruh Perubahan Parameter Fisik-Kimia terhadap Aktivitas Mikroorganisme selama Proses Pengomposan Sampah Organik Kantin Banaget, Cut Keumala; Kristanto, Gabriel S. Boedi Andari; Danumihardja, Irma Gusniani
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v1i3.87

Abstract

Pengolahan sampah sisa makanan perlu menjadi prioritas karena jumlahnya yang besar serta sifatnya yang mudah membusuk dan memicu kehadiran hewan pembawa penyakit seperti tikus.Salah satu teknik pengolahannya adalah pengomposan, yaitu proses degradasi sampah organik oleh mikroorganisme menjadi material sejenis humus yang dapat dimanfaatkan. Tujuan penelitian ini adalah untuk menganalisis faktor-faktor (meliputi parameter fisik-kimia) yang mempengaruhi proses pengomposan, serta menganalisis hubungan dan pengaruh faktor tersebut terhadap aktivitas mikroorganisme selama proses pengomposan berlangsung. Analisis statistik dalam penelitian ini meliputi analisis faktor, korelasi, dan multivariabel. Berdasarkan analisis faktor yang dilakukan,terbentuk 2 faktor baru yang mempengaruhi proses pengomposan, yaitu faktor 1 dinamakan parameter yang menunjukkan hasil dari proses pengomposan, terdiri dari konduktivitas, salinitas, dan kadar air; dan faktor 2 dinamakan parameter yang mendukung proses pengomposan, terdiri dari rasio C/N, kadar karbon, pH, dan kadar nitrogen. Hasil analisis korelasi menunjukkan kadar air, rasio C/N, kadar karbon, pH, kadar nitrogen memiliki pengaruh terhadap aktivitas mikroorganisme. Berdasarkan analisis multivariabel, komposter 2 diperkirakan memiliki model regresi pengaruh faktor pengomposan terhadap aktivitas mikroorganisme yang terbaik. Sedangkan dilihat dari penurunan kadar karbonnya, komposter 1 memiliki konstanta laju pengomposan dan laju dekomposisiterbesar dibandingkan dua komposter lainnya, yaitu sebesar 0,0006 dan 0,0224%/hari.
Kendali Optimal Model Diversifikasi Beras dan Non-beras dengan Target Akhir Konsumsi Dewanti, Retno Wahyu; Subchan, Subchan
SPECTA Journal of Technology Vol 1 No 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v1i3.88

Abstract

Dalam Peraturan Presiden (Perpres) No. 22 Tahun 2009 disebutkan bahwa dua sasaran dari upaya diversifikasi pangan masyarakat Indonesia meliputi perbaikan pola konsumsi pangan yang beragam, bergizi, dan seimbang serta mengurangi konsumsi beras per kapita sebesar 1,5% per tahun. Upaya tersebut dilakukanuntuk menghindari ketergantungan pada satu jenis pangan pokok yaitu beras. Disisi lain ketersediaan pangan lokal merupakan alternatif terbaik sebagai pengganti beras karena lebih mudah dijangkau secara sik maupun ekonomi, seperti jagung, singkong, ubi jalar, sagu, gembili, yang biasa dikenal dengan istilah non-beras. Pada jurnal ini dibahas permasalahan kendali optimal model diversifikasi beras dan non-beras dengan penerapan target akhir konsumsi. Target akhir konsumsi adalah tingkat konsumsi beras dan non-beras yang diharapkan oleh pemerintah pada tahun yang sudah ditentukan. Model dinamik yang digunakan untuk mengintepretasikan adalah Model Lotka-Volterra. Persentase tingkat konsumsi beras dan non-beras dijadikan sebagai variabel pengendali yang bertujuan untuk meminimumkan biaya. Metode penyelesaian yang digunakan adalah Prinsip Minimum Pontryagin. Berdasarkan hasil simulasi ditunjukkan bahwa konsumsi beras menurun secara optimal sedangkan konsumsi non-beras meningkat, sehingga biaya yang dikeluarkan minimum.
Analysis of Loading Change Effect to Boat Velocity on a 2.5GT Fishing FRP Boat with a Field Test Klara, Syerly; Mahmuddin, Faisal; Muas, Muhammad
SPECTA Journal of Technology Vol 2 No 1 (2018): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v2i1.89

Abstract

In order to determine the effect of load change to ship velocity on a 2.5 GT fishing boat, a field test is conducted in the present study. The boat model used in the field test is an actual size boat made from fiber reinforced plastic (FRP) material. The boat is powered by 2 (two) 15 HP direct drive engines each equipped with 3-bladed single screw propeller. Two loading cases are investigated and analyzed which are no load case and with load case. For each case, 4 (four) engine power variations are performed which are 25%, 50%, 75% and 100%. The main parameters measured are boat draught, engine power percentage, shaft revolution speed and boat velocity. From the field test, it is found that even though the propulsion performance increases larger loading and displacement, the increased boat resistance due to larger wetted surface make the boat velocity reduces.
Model Development for Decision Making in Vegetables Distribution in Kabupaten Malang Oktiarso, Teguh
SPECTA Journal of Technology Vol 2 No 1 (2018): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v2i1.90

Abstract

Food supply chain especially vegetables supply chain must consider the speed of the deliveries due to freshness of the product. Reduced of the freshness of the vegetables faces the great risk of great loss for the farmer and the greengroceries. This paper aimed to develop model for multi criteria decision making based on time to solve vegetables distribution problems from farmers to greengroceries in Kabupaten Malang. Model for decision support system is aimed to determine the minimize delivery time for main vegetables in Kabupaten Malang. There are three variables on three echelons which effects on delivery time before the vegetables decay and worthless. A model for decision support system using real data from 8 sub districts in Kabupaten Malang are obtained to describe the optimal result for several situations in vegetables distribution in Kabupaten Malang to support the decision for distributing the vegetables from farmers to greengroceries with lower cost.

Page 3 of 26 | Total Record : 260

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