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Specta Journal of Technology

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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 325 Documents

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The Change of Land Cover and Biocapacity of CO2 Gas Emission Absorption in Gresik Urban Area Achmad Ghozali; Fery Irfan Nurrahman; Eko Budi Santoso
SPECTA Journal of Technology Vol. 1 No. 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

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; Arif Jauhar Tontowi; Eko Wahyudi
SPECTA Journal of Technology Vol. 1 No. 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

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 Dian Harmuningsih; Saul Ronald Jacob Saleky
SPECTA Journal of Technology Vol. 1 No. 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

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 Cut Keumala Banaget; Gabriel S. Boedi Andari Kristanto; Irma Gusniani Danumihardja
SPECTA Journal of Technology Vol. 1 No. 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

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 Retno Wahyu Dewanti; Subchan Subchan
SPECTA Journal of Technology Vol. 1 No. 3 (2017): SPECTA Journal of Technology
Publisher : LPPM ITK

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 Syerly Klara; Faisal Mahmuddin; Muhammad Muas
SPECTA Journal of Technology Vol. 2 No. 1 (2018): SPECTA Journal of Technology
Publisher : LPPM ITK

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 Teguh Oktiarso
SPECTA Journal of Technology Vol. 2 No. 1 (2018): SPECTA Journal of Technology
Publisher : LPPM ITK

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.

Cloud IaaS Enterprise Architecture Design on Multiplatform Integrated Information System using Cloud Ecosystem Reference Model and TOGAF Setiyo Widayat; M Suksrisno Mardiyanto
SPECTA Journal of Technology Vol. 2 No. 1 (2018): SPECTA Journal of Technology
Publisher : LPPM ITK

Currently Information Technology is increasingly needed by many organizations. Implementation of inappropriate IT in the organization will be a burden, even can hinder the development if not in accordance with the vision and mission of the organization. Weill and Ross also stated, 48 percent of companies that do IT investment cannot increase the expected value. A solid foundation in the execution process of IT implementation plays an important role in determining the success or failure of the company to achieve the desired goals. To build a solid foundation on the execution process of IT implementation, one of the important things to note is Enterprise Architecture (AE). Enterprise architecture provides a long-term view of the processes, systems and technologies in the company, so there is a harmony between business and IT both for now and for the future to achieve the desired goals. Currently the use of cloud computing technology increasingly used in organizations. Organizations typically have a variety of different platform integrated applications that are used to support their business processes. There are many frameworks used to build AE, but there is no AE framework specifically addressing AE design on cloud computing and supports multiplatform and cloud-based IaaS. This paper discusses the use of TOGAF and CERM to educational institution that have many integrated multiplatform applications. AE design that was built is validated by using Enterprise Realization Score Card (EARS) to assess whether it can be implemented well in the organization.

Forecasting Error Modelling for Improving PV Generation Prediction Happy Aprillia; Hong-Tzer Yang
SPECTA Journal of Technology Vol. 2 No. 1 (2018): SPECTA Journal of Technology
Publisher : LPPM ITK

Accurate forecasting of Photovoltaic (PV) generation output is important in operation of high PV-penetrated power systems. In this paper, an adaptive uncertainty modelling method for forecasting error is proposed to improve the prediction accuracy of PV generation. The proposed method models the uncertainty in forecast data using Kernel Density Estimator and guarantee the provision of accurate expected value. Neural Network model is then constructed by the developed uncertainty model to forecast the PV output. The actual confidence level is traced within the day and injected as an input to the Neural Network model by observing the Mean Absolute Prediction Error (MAPE) and Unscaled Mean Bounded Relative Absolute Error (UMBRAE). The proposed method is tested with various significant changes of weather condition and proved to have promising performance on PV generation forecasting. Thus, the developed adaptive uncertainty model can be further used in power system planning that have high-penetration energy sources with stochastic behavior.

Glucomanan Extract From Salak Seed (Salacca edulis Reinw.) As An Alternative Material of Making Hard Capsule Shell Triana Yunita; Dharmawan Yudha Rizky; Utami Putri Rahajeng; Kurniawan Fredy
SPECTA Journal of Technology Vol. 2 No. 1 (2018): SPECTA Journal of Technology
Publisher : LPPM ITK

This research studied about making hard capsule shell using glucomannan extract from salak seed (Salacca edulis Reinw.). The glucomannan extracted by using etanol 96% and aqua dm. The glucomannan that had been extracted will became KGM polymer that will be used for casting the hard capsule shell using petri cup. The results obtained by smashing the seeds of salak to be smooth with meat grinder and glucomannan extraction using 2 methods with etanol 96% and isopropyl alcohol. After extracting the seeds of salak seeds, the bacon seed flour is weighed and taken some samples to obtain the best composition, resulting in a film layer on a thick capsule shell like a capsule shell in general. The result of the printing on the petri cup is still a thin layer that can not be taken, but this proves that glucomannan contained in the seeds of salak able to produce lapisal film capsule shells with the right composition.

Page 11 of 33 | Total Record : 325

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Syamsul Mujahidin

Contact Email syamsul@lecturer.itk.ac.id

Phone +6285931379488

Journal Mail Official spectajournal@itk.ac.id

Editorial Address Ruangan LPPM Gedung A lantai 2, Kampus ITK, Jl Soekarno Hatta KM 15, Karang Joang, Balikpapan, Balikpapan Utara, KALTIM

Location Kota balikpapan, Kalimantan timur INDONESIA

Abstract

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Contact Name
Syamsul Mujahidin

Contact Email
syamsul@lecturer.itk.ac.id

Phone
+6285931379488

Journal Mail Official
spectajournal@itk.ac.id

Editorial Address
Ruangan LPPM Gedung A lantai 2, Kampus ITK, Jl Soekarno Hatta KM 15, Karang Joang, Balikpapan, Balikpapan Utara, KALTIM

Location
Kota balikpapan,

Kalimantan timur

INDONESIA