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All Journal Civil Engineering Forum Teknik Sipil Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Ilmiah Teknik Sipil TEKNIK MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Sipil Jurnal Transportasi Journal of Engineering and Technological Sciences Jurnal Dampak Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Proceedings ACES (Annual Civil Engineering Seminar) JURNAL SIPIL SAINS Warta Penelitian Perhubungan Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Stabilita : Jurnal Ilmiah Teknik Sipil Fakultas Teknik Universitas Halu Oleo Kendari G-Tech : Jurnal Teknologi Terapan JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality Warta Penelitian Perhubungan
Latif Budi Suparma
Jurusan Teknik Sipil Dan Lingkungan Fakultas Teknik, UGM
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Environmental Science Industrial & Manufacturing Engineering Transportation Other

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FUNCTIONAL PERFORMANCE ASSESSMENT AND METHOD DEVELOPMENT OF FLEXIBLE ROAD PAVEMENT IN INDONESIA NATIONAL ROAD Hapsari, Purwaningtyas Widya; Muthohar, Imam; Suparma, Latif Budi
Jurnal HPJI Vol 4, No 2 (2018)
Publisher : Jurnal HPJI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/.v4i2.3026.%p

Abstract

Abstract Pavement quality can be maintained by assessing its performance both structurally and functionally. This study aims on knowing pavement functional performance in Indonesia focus on flexible pavement road, develop the utilization of provided data in various assessment methods and give reasonable recommendation on current Indonesia practice. The method covers pavement performance analysis uses the combination of International Roughness Index and Surface Distress Index, and try the implementation of other method such as Present Serviceability Index, Pavement Condition Rating, as well as generating Remaining Service Life. The results reveal that Present Serviceability Index gives lower performance thus generate earlier warning toward road maintenance compared to International Roughness Index and Surface Distress Index. On the contrary, Pavement Condition Rating gives higher performance caused by limited data which leaded from discrepancy in distress record. Remaining Service Life results are vary depending either on loads or pavement deflection. Keywords: flexible pavement, pavement performance, road maintenance, pavement deflection  Abstrak Kualitas perkerasan jalan dapat dipelihara secara rutin dengan menilai kinerjanya, secara struktural maupun fungsional. Penilitian ini bertujuan untuk mengetahui kinerja fungsional perkerasan lentur di ruas jalan nasional Indonesia, mengembangkan pemanfaatan data survei yang tersedia dalam berbagai metode penilaian, dan memberikan rekomendasi pada perbaikan sistem yang berlaku saat ini. Metode yang dibahas dalam studi ini meliputi analisis kinerja perkerasan dengan metode gabungan International Roughness Index and Surface Distress Index, kemudian mencoba metode lain seperti metode Present Serviceability Index dan Pavement Condition Rating, serta Remaining Service Life. Hasil analisis menunjukkan bahwa penilaian kinerja dengan metode Present Serviceability Index memberikan hasil kinerja yang lebih rendah, sehingga memberikan peringatan lebih awal untuk perbaikan jalan dibandingkan dengan metode kombinasi International Roughness Index and Surface Distress Index. Sebaliknya, metode Pavement Condition Rating memberikan hasil kinerja yang lebih baik, yang disebabkan oleh keterbatasan data kerusakan jalan yang dapat mempengaruhi keandalan hasil analisis. Metode Remaining Service Life memberi hasil yang bervariasi bergantung pada beban dan lendutan perkerasan. Kata-kata kunci: perkerasan lentur, kinerja perkerasan, pemeliharaan jalan, lendutan perkerasan
PENGEMBANGAN METODE PREDIKSI PROBABILITAS KECELAKAAN PADA SUATU RUAS JALAN ANTARKOTA BERDASARKAN KONDISI GEOMETRIK JALAN DAN KARAKTERISTIK LALU LINTAS Idalin, Fransiska; Malkhamah, Siti; Suparma, Latif Budi
Jurnal Transportasi Vol 18, No 2 (2018)
Publisher : Jurnal Transportasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (254.333 KB) | DOI: 10.26593/jt.v18i2.3044.%p

Abstract

Abstract Accident data is very important to figure out the number of accidents that occur on the road segment in some periods of time. If accident data is not available, another method is needed to determine the frequency of accidents, with the frequency of accidents replaced by a prediction of accident probability. Based on the literatures, it is found that the predictions of accident probabilities can be done based on the geometric conditions of the road and traffic characteristics. The probability values are obtained from the calculation of the percentage of the total score on the location of the road. The score is given based on the magnitude of the existing condition deficiency against the specified standard or criteria, with a score of 1 for conditions that are in accordance with the standard, while a score of 5 for the conditions that are not in accordance with the standards. Predictor parameters for 2 lane 2 ways undivided rural road are lane width (m), lane widening on curve, shoulder width, shoulder type, stopping sight distance, passing sight distance, radius of curve, maximum superelevation, tangent length between 2 curves, the present of transition curve, curve radius ratio of 2 adjacent curves, maximum length of tangent, grade (%), maximum length of grade, side slope, clear zones, hazards type, lighting, signings and markings, driveways density (number/km), proportion of heavy vehicles (%), volume of pedestrians (person/day), special alignment combinations and the differences between operating speed (V85) and speed limit (Vlimit). From this method would be generated 5 accident probabilities categories which are “very small”, “small”, “medium”, “big” and “very big”. Keywords: traffic accident, accidents frequency, accident probability, road geometric  Abstrak Data kecelakaan sangat penting untuk mengetahui jumlah kecelakaan yang terjadi pada segmen jalan untuk jangka waktu tertentu. Jika data kecelakaan tidak tersedia, diperlukan metode lain untuk mengetahui frekuensi kecelakaan, dengan frekuensi kecelakaan digantikan dengan perkiraan probabilitas kecelakaan. Berdasarkan literatur diperoleh bahwa prediksi probabilitas kecelakaan dapat dilakukan berdasarkan kondisi geometrik jalan dan karakteristik lalu lintas. Nilai probabilitas diperoleh dari hasil perhitungan persentase total skor pada lokasi ruas jalan. Pemberian skor dilakukan berdasarkan besarnya defisiensi kondisi eksisting terhadap standar atau kriteria yang ditentukan, dengan skor 1 untuk kondisi yang sesuai standar, sedangkan skor 5 untuk kondisi yang paling tidak sesuai standar. Parameter predictor adalah lebar lajur, pelebaran lajur pada tikungan, lebar bahu, tipe bahu, jarak pandang henti, jarak pandang mendahului, jari-jari tikungan, super-elevasi maksimum, panjang tangent di antara 2 tikungan, keberadaan lengkung peralihan, rasio jari-jari 2 tikungan berdekatan, panjang tangent maksimum, kelandaian (%), panjang landai, side slope, clear zone (m), jenis hazard, penerangan jalan, rambu dan marka jalan, driveways density (jumlah/km), proporsi kendaraan berat (%), volume pejalan kaki (orang/hari), kombinasi alinyemen khusus, serta selisih kecepatan operasional (V85)dari Vlimit. Dihasilkan 5 katagori probabilitas, yaitu “sangat kecil”, “kecil”, “sedang”, “besar”, dan “sangat besar”. Kata-kata kunci: kecelakaan lalu lintas, frekuensi kecelakaan, probabilitas kecelakaan, geometrik jalan
Use of Systematic Approach in Accident Risk Analysis for Motorcyclists: A Conceptual Idea da Costa, Don Gaspar Noesaku; Malkhamah, Siti; Suparma, Latif Budi
Journal of Engineering and Technological Sciences Vol 50, No 5 (2018)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.925 KB) | DOI: 10.5614/j.eng.technol.sci.2018.50.5.2

Abstract

Thus far, minimum stopping sight distance (SSD) is determined based on design speed, a minimum reaction time of 1.64 s and a deceleration rate of 3.4 m/s², whereas in certain situations the latter can be shorter than 1 s and higher than 4.5 m/s². Awareness of this can trigger speculative behavior, as can be seen from the choice of speed and/or the critical crossing gap, which is often smaller than the recommended minimum SSD. This study focused on the development of an appropriate minimum SSD model that is suited to risky conditions at an un-signalized intersection and its possible usage in accident risk evaluation, particularly for motorcyclists. The data were taken from direct measurements and related studies. Variables that potentially influence minimum SSD were tested. The results strongly suggest that the speed reduction achieved by downshifting significantly influences both the braking distance and the impact speed. Moreover, the minimum SSD obtained from the proposed model significantly differs from that obtained from a similar model recommended by AASHTO. Therefore, it is worthwhile to consider the application of the proposed minimum SSD as an accident probability indicator parameter.
ANALISIS INDEKS STABILITAS SISA PADA CAMPURAN ASPHALT CONCRETE DENGAN PENGGUNAAN LIMBAH PLASTIK SEBAGAI AGREGAT PENGGANTI Tajudin, Anissa Noor; Suparma, Latif Budi
Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Vol 1, No 1 (2017): Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmstkik.v1i1.439

Abstract

Sulitnya penguraian limbah plastik seharusnya menjadi pemacu untuk mengolah kembali limbah tersebut menjadi sesuatu yang bermanfaat, sehingga kualitas lingkungan terjaga dan limbah plastik memiliki nilai fungsi. Selain itu, curah hujan tinggi sering mengakibatkan genangan pada permukaan jalan yang dapat menurunkan keawetan jalan. Inovasi dalam perancangan perkerasan jalan perlu terus dilakukan agar didapat kualitas perkerasan yang mampu bertahan pada cuaca ekstrim. Penelitian ini dilakukan untuk mengetahui pengaruh air terhadap stabilitas campuran panas Asphalt Concrete – Binder Course (AC-BC) dengan penggunaan biji limbah plastik  High Density Polyethylene (HDPE) sebagai agregat pengganti. Variasi biji limbah plastik yang digunakan adalah sebesar 0%, 25%, dan 50% terhadap volume agregat yang lolos saringan no. 4 dan tertahan saringan no. 8. Pelaksanaan penelitian terdiri dari pemeriksaan karakteristik bahan dan campuran aspal panas AC-BC, perancangan gradasi agregat, perancangan variasi plastik dan gradasi baru campuran, pengujian rendaman standar, pengujian rendaman modifikasi, dan analisa stabilitas yang dilakukan pada perendaman selama 30 menit, 1 hari, 2 hari, 4 hari, dan 7 hari. Hasil analisis Indeks Stabilitas Sisa (IRS) menunjukkan campuran dengan variasi plastik 25% mengalami kehilangan kekuatan yang paling sedikit, atau dengan kata lain campuran tersebut lebih tahan terhadap pengaruh air dibandingkan dengan variasi plastik lainnya. Tingginya kekuatan campuran dengan variasi plastik 25% ditunjukkan dengan nilai Indeks IRS yang paling tinggi diantara variasi lainnya, yaitu sebesar 76,10% pada akhir masa perendaman selama 7 hari. Hanya campuran dengan variasi plastik 25% ini yang memenuhi persyaratan minimum IRS 75%.Kata kunci: AC-BC, limbah plastik, stabilitas, indeks stabilitas sisa
PEMANFAATAN BGA (BUTON GRANULAR ASPHALT) SEBAGAI BAHAN PENGGANTI AGREGAT HALUS PADA CAMPURAN HRS-WC SECARA LABORATORIUM Prawira, Abdi; Suparma, Latif Budi
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
Publisher : Civil Engineering Forum Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.652 KB)

Abstract

Along with the improvement and development for keeping the road infrastructure in Indonesia, it is important to be far more comprehends and does testing to exploite nature material. The development of the existing firm layer material technology is very fast, to create technological innovation to efecienti cost, optimalisation of material exploition, expansion of natural material, and environmental friendliness like BGA (Buton Granular Asphalt) in the place of smooth aggregate at mixture HRS-WC. Exploition of BGA for the subsitution of fine aggregates done at this research through volume equivalent, using various comparison of fine aggregates used by BGA are (0%:100%), (25%:75%), (50%:50%) and (100%:0%). Method applied is Marshall and immersion, and determines optimum asphalt content from each various specimen. Specimen at optimum asphalt content was immersed ½ hour (Marshall Standard) and 24 hours, then Marshall test is done. Marshall test and immersion are done to study the influence of various usage of BGA based on its stability values and indexs of retained strength. The result of this research shows optimum asphalt grade of specimen with various BGA of 0%, 25%, 50%, 75% and 100% is 6.37%; 4.85%; 4.49%; 4.15% and 4.55%. At Marshall standard various BGA 0%, 25%, 50%, 75% and 100% stability value of 1340 kgs, 1700 kgs, 1765 kgs, 1589 kgs and 1520 kgs is obtained while index of retained strength is 99.57%; 75.63%; 70.02%; 94.12% and 72.87%. These results show that utilization of BGA can reduce optimum asphalt grade, increase stability values and durability indexes on the HRS-WC mixture. Keywords : HRS-WC, BGA (Buton Granular Asphalt), Marshall.
PERANCANGAN LABORATORIUM CAMPURAN HRS-WC DENGAN PENGGUNAAN BUTON GRANULAR ASPHALT (BGA) SEBAGAI BAHAN ADDITIVE Howardy, Howardy; Suparma, Latif Budi; Satyarno, Iman
Civil Engineering Forum Teknik Sipil Vol 18, No 3 (2008): SEPTEMBER 2008
Publisher : Civil Engineering Forum Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (132.995 KB)

Abstract

Increasing demand for asphalt in the country results in 650,000 tons of imported asphalt per year. The early damage of asphalt pavement is due to increasing axle loads and high temperature climates. On the other side, natural asphalt in Buton island of Sulawesi Tenggara, which is the biggest natural asphalt deposit district in world containing about 677 million tons of asphalt, has not been optimally exploited. This research designs HRS-WC mixture by utilizing Buton Granular Asphalt ( BGA), one of Buton asphalt form, as additive in the binder. The objective of this research is to identify mixture characteristics by referring to Marshall characteristic. Mixture is designed under the Marshall Standard procedure and 24 hours Marshall Immersion at optimum binder content according to Indonesian specification (Bina Marga, 2005) for Hot Rolled Sheet-Wearing Course ( HRS-WC). Mixture design applies the additive BGA (Buton Granular Asphalt) variations of 0%, 2%, 4%, 6%, 8% and 10% to the total mixture. The results of the research showed the optimum asphalt content of specimen Buton Granular Asphalt (BGA) variations of 0%, 2%, 4%, 6%, 8%, and 10% were 8.3%, 7.7%, 7.2%, 6.7%, 6.4%, and 6.3%, respectively. The misture reached the Stability values at 1373.8 kgs, 1554.9 kgs, 1493.1 kgs, 1419.3 kgs, 1230.0 kgs, and 1429.3 kgs, respectively. Index of retained strength obtained were 98.1%, 75.4%, 87.9%, 93.0%, 98.6%, and 80.5%, respectively. Composition suitable for addition Buton Granular Asphalt (BGA) at HRS-WC mixture were 2% and 4% BGA, with the mixture density values of 2.266 gr/cm3 and 2.218 gr/cm3, mixture VMA values of 19.9% and 18.9%, mixture VFWA values of 74.7% and 71.4%, mixture VITM values of 5.0% and 5.4%, mixture Stability values of 1554,9 kgs and 1493,1 kgs, mixture flow value of both of 3,0 mm, mixture MQ values of524.1 kg/mm and 493.1 kg/mm, mixture Index of retained strength of 75.4% and 87.9%.
Evaluasi Kemantapan Permukaan Jalan Berdasarkan International Roughness Index Pada 14 Ruas Jalan di Kota Yogyakarta Pembuain, Ardilson; Priyanto, Sigit; Suparma, Latif Budi
TEKNIK Vol 39, No. 2 (2018): Desember 2018
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (306.982 KB) | DOI: 10.14710/teknik.v39i2.21459

Abstract

Roads that have poor surface roughness can cause uncomfortable to road users, traffic accidents, increase dynamic loads on the road surface, thereby accelerating the process of road damage, and damage to vehicles. This research aims to evaluate the stability of road conditions based on the international roughness index (IRI). Evaluation of road stability conditions was carried out on 14 road segments in the city of Yogyakarta, with details of four secondary arterial road segments and 10 secondary collector road segments. Data on road surface roughness (IRI) values were obtained using NAASRA roughness meter which refers to SNI 03-3426-1994. Evaluation of the stability of road conditions is done by comparing the IRI values of the survey results and the limits of IRI values determined by the Directorate General of Highways. The results showed that 14 roads were evaluated, 64% were in moderate condition and 36% were in good condition. Of the 14 roads, the Sisingamangaraja, Lowanu, and Sugeng Jeroni roads have the highest IRI value in a sequence so that the three road segments are prioritized for handling.
Pengaruh Rendaman pada Indirect Tensile Strength Campuran AC-BC dengan Limbah Plastik sebagai Agregat Pengganti Tajudin, Anissa Noor; Suparma, Latif Budi
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (562.027 KB) | DOI: 10.14710/mkts.v23i2.16128

Abstract

The pavement vulnerability of moisture and the risk of environment quality depression caused by plastic waste became the main reason of the effort to increase pavement strength with the use of plastic waste. This study was conducted to understand moisture effect to the fatigue risk with Indirect Tensile Strength (ITS) of AC-BC Hotmix with the use of plastic waste as aggregate substitution. The variance of plastic waste used are 0%, 25%, and 50% of aggregate volume passing sieve No. 4 and retaining on sieve No. 8. The test was conducted with the immersion time of 30 minutes, 1 day, 2 days, 4 days, and 7 days. The result of ITS test showed that longer immersion time will make Tensile Strength Ratio (TSR) become lower. TSR values of 0% plastic waste at the immersion time of 30 minutes, 1 day, 2 days, 4 days, and 7 days respectively are 100%; 79,13%; 62,18%; 54,19%; and 44,25%. For 25% plastic waste are 100%,  82,12%, 66,68%, 64,03%, and 56,91%. And for the 50% plastic waste are 100%, 96,21%, 84,34%, 80,53%, and 76,21%.
Pengembangan Metode Pengelolaan Risiko Kecelakaan Lalu Lintas Gaspar, Don; Malkhamah, Siti; Suparma, Latif Budi
Warta Penelitian Perhubungan Vol. 28 No. 6 (2016): Warta Penelitian Perhubungan
Publisher : Sekretariat Badan Penelitian dan Pengembangan Perhubungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.426 KB) | DOI: 10.25104/warlit.v28i6.582

Abstract

Kurangnya kapasitas sumber daya terbukti menjadi kendala pengelolaan risiko kecelakaan. Walaupun demikianpenelitian-penelitian terdahulu menunjukkan bahwa sebagian besar faktor penyebab dan pemicu kecelakaanmasih dianalisis secara terpisah, sementara skema pengelolaan risiko terpadu sangat terbatas. Tujuan studiini adalah untuk mengembangkan skema pengelolaan risiko kecelakaan lalu lintas terpadu. Pengembangannyadidasarkan pada hasil investigasi terhadap substansi pengelolaan berbagai pola pengelolaan risiko kecelakaanyang ada. Ditemukan bahwa 1) variabel yang dipakai dalam proses analisis risiko harus tidak saja mengakomodirfactor penyebab dan pemicu kecelakaan melainkan juga variabel-variabel penjelasnya. 2) untuk meminimalkanaspek ketidakpastian dalam metode analisis risiko, penentuan periode, durasi maupun lokasi survai harusdisesuaikan dengan kebutuhan kontekstual di lapangan 3) diperlukan upaya pengembangan skema pengelolaanrisiko kecelakaan yang lebih sesuai dengan mengintegrasikan pengaruh tiap variabel terkait secara menyeluruhdan proporsional. Selain itu, model Jarak Pandang Henti direkomendasikan untuk digunakan dalam analisisrisiko kecelakaan.
MODEL ESTIMASI BIAYA DENGAN COST SIGNIFICANT MODEL DAN ARTIFICIAL NEURAL NETWORK PROYEK PENINGKATAN JALAN ASPAL DI YOGYAKARTA Tahapari, Yesia; Nugroho, Arief Setiawan Budi; Suparma, Latif Budi
Jurnal Teknik Sipil Vol 16, No 2 (2021)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (442.061 KB) | DOI: 10.24002/jts.v16i2.4778

Abstract

The need for an analytical method that may provide an accurate project cost estimation with minimal data availability becomes very necessary. Therefore, this research was conducted to determine and compare the cost estimation model based on the Cost Significant Model (CSM) and Artificial Neural Network (ANN) with two modeling approaches, ANN-1 and ANN-2. The models were developed based on 28 data of road improvement projects in Yogyakarta from the year 2010 until 2019. The analysis results show that the ANN-2 provides the best validation compared to the ANN-1 and the CSM model. The value of Mean Absolute Percentage Error (MAPE) of ANN-1 with the 3-8-1 net scheme provides a value of 12.687%, while that of ANN-2 with 10-15-1 net scheme is 8,132% and the MAPE value of the CSM model produces a value of 14.757%.
Co-Authors Abdi Prawira Abi Teguh Kurniawan Agung Wahyudi Agus Taufik Mulyono Agus Taufik Mulyono Agus Taufik Taufik Alfian Najib Anshori Alfian Saleh, Alfian Alfiani Yogaturida Isnaini Anggita Yuliani Anissa Noor Tajudin, Anissa Noor Aqilah Attamimi Ardiansyah, Ahmad Farid Arief Setiawan Arief Setiawan Bambang Suhendro Bambang Suhendro Bartolomeus Krimanto Pauta Benidiktus Susanto Berlian Kushari Berry Evaldo, Berry Cahyono, Muhammad Wardan B. Dedy Tahan Saputro Desy Natalia Aglesia Don Gaspar Don Gaspar Noesaku da Costa Edward Ngii Fransiska Idalin Gaspar, Don Gayuh Bintang Ramadhan Gholiqul Amrodh Alawy ghuzdewan, Toriq arif Hapsari, Purwaningtyas Widya Haris, Willi Heriadi Hesti Ratnasari Howardy Howardy Idalin, Fransiska Imam Muthohar Imam Muthohar Iman Satyarno Iman Satyarno Iman Setyarno Kanitpong, Kunnawee Laurent Yesana Perdana Putra Sabetu Muhammad Andrian, Muhammad Muhammad Ihsan Muhammad Rezki Fadhilah Novi Ari Nugroho Nugroho, Arief Setiawan Budi One Sigit Hermanto Pasapan, Richard Marcelenus Pembuain, Ardilson Purwaningtyas Widya Hapsari Raharjo, Alif Naufal Ramadhan, Gayuh Bintang Reynaldi Darmawan Senolinggi Rizky Rahmawati Sandra Mude Sari, Ardystia Maha Septiandri, Rohmahillah Aviskanasya Sigit Priyanto Siti Malkhamah Sri Bintang Pamungkas Sri Mulyani Suprapto Siswosukarto Suprapto Siswosukarto Suryo Hapsoro Tri Utomo Syaripin Syawal, Jus Tahapari, Yesia Tunggul W. Panggabean Wahyu Purnomo, Wahyu Waode Murniati Sadia Wunantari, Wa Ode Arie