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Journal : Nusantara Science and Technology Proceedings

Experiment Design Effects of Cooling Media Variations Toward Strictness and Pulling Strenghness of Materials of ST 41 in Heat Treatment Process Sumiati; Verayanti, Fransisca Diah Ayu; Purwati
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0527

Abstract

Steel of ST 41 is the steel be classified as low carbon steel with guide compositions about 0.37-0.43%C, 0.5-0.35%Si, 0.60-0.90%Mn. The steel sometimes has the unfit characteristic to the need, so It needs another treatment to change characteristic and structure from steel of ST 41 itself be changed in heat treatment methods. Cooling media can affect the strictness characteristics of steel of ST 41. The heating process in the research uses 723oC withholding in an hour. Then it is cooled quickly in many Cooling media. Cooling media be used in the research are water, salt, and coconut oil by using holding time on each Cooling media in 5 to 20 minutes. After done in Quenching process, the steel of ST 41 is done strictness tests and strengths tests to use Rockwell method tests and analyzed. This research result will recommend on general formulation to predict in strictness of steel of ST 41, if it use two co positions namely: Y= 97.2118+0.0983*x-0.4223*y 0.0114*x*x+0.0026*x*y+0.0023 *y*y. can predict pulling strength ness of ST 41 material, For a while if they use two compositions namely Y = 46.7828+0.3293*x+0.2271*y-0.0132*x*x-1.1689E-14*x*y-0.0009*y*y. so each x1 and x2 areas holding time and temperature.
The Influence Model of Reliability, Assurance, Tangibles, Empathy, Responsive-ness on Customer Satisfaction and Highway Users Loyalty Waluyo , Minto; Sumiati; Waluyo, Mohammad Rachman
Nusantara Science and Technology Proceedings 1st International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2020.0539

Abstract

To harmonize the government program of the National Non-Cash Movement (GNNT), PT. Jasa Marga does service improvement by implementing E-Toll. The implementation of the E-toll service is deemed not fully implemented according to the expected goals. This is evident from the existence of several problems that occur such as double detach, the E-toll card is not read by the reader contactless machine, and the gate is not open, all transaction services become dissatisfied. This study aims to determine the effect of reliability, assurance, tangibles, empathy, and responsiveness variables on customer satisfaction and loyalty of toll road users at PT. Jasa Marga Surabaya - Mojokerto Indonesia. Respondents in this study were toll road users who had crossed the Surabaya - Mojokerto toll road at least once, the number of respondents was 120. This study used the Structural Equation Modeling (SEM) method which was processed using AMOS 22 software. The results showed that the Reliability variable had a significant effect on customer satisfaction, Assurance does not have a significant effect on customer satisfaction, Tangible has no significant effect on customer satisfaction, Empathy has no significant effect on customer satisfaction, Responsiveness has a significant effect on customer satisfaction, customer satisfaction has a significant effect on customer loyalty and the model equation is as follows Y2 = 0.207 X1 + 0.114 X2 + 0.04 X3 + 0.161 X4 + 0.191 X5
Co-Authors AA Putri Melastini Afandi, Jefri Agus Muchsin Agus Setiyono Ahmad Fatoni Dwi Putra ahmad yani Al-Hidayah Alfathya, Atmaya Fitra Alfia Batshila Andini, Firda Fikri Anhar Faisal Fanani Anistia Ardiansyah, ⁠Abd Aziz Ario Damar Asma'urrahman, Nailurriza Asro Laili , Mohamad Asya Alifa Atmaja, Devi Yulianty Surya Atmaya Fitra Alfathya Azhary Noersidiq Azizoma, Rusman Bagus Shandy Narmaditya Bakhtiar Binowo, Seruni Budiman, Jovi Yuzzer Chairil Akhyar Cindy Patandianan D. A. Astuti Damirah Darmawati Devi Theda Rizaldy Dian Surya Aprilyanti Dudin, F. Dwi Kusuma Purnamasari, Dwi Kusuma Eko Sutrisno Erwan Evy Damayanthi Fahrullah Fahrullah Fajrih, Nurul Fajriyah, Fajriyah Fatmawati Fatmawati Fefti Yulian Mela Felicia Yorenda Frans Paillin Rumbi Fuah, Asnath Mariah Hadijah Hulopi Haerul, Muhammad Hanif Nurmajid Hanifa Almira Nanda Harahap, Syafnah Aisyah Nauli Hariono Hartatu, Tiara Hasim Hay’s , Riyan Naufal Hay’s , Riyan Naufal Hendry Gunawan Hesteria Friska Armynia Subratha Hindami, Moh Argy Hariran Hubaedah, Annah Husniyyah I Gusti Ayu Agung Intan Dewi6 I. Akbar, I. Idisri, Evania Elita Idqan Fahmi Illahi, Beta Kurnia Imam Suyitno Indria Nuraini IPB, DGB Irma Nurma Linda Irwan, Andi Muhammad Ivan Zairani Lisi Ivan Zairani Lisi Joni Saputra K.G.Wiryawan Kamilah, Dendy Siti Ketut Espana Giri Khaerunnisa Koesoemaningsih, Rachmawati Komang G. Wiryawan Komang Sulyastini Kurniasari, Irma Kusuma Ratnawati Kusumawardani, Luluk Nur Indah Lala M Kolopaking Lilis Sulistyani Ludi Wishnu Wardana Luh Citrarasmi Dara Mestika Luh Yenny Armayanti Luthfiyah Robbiyati Shofa M Agus Setiadi M. Q. Sa’ad Ma'mun Sarma Made Rinin Sri Wulandari Majid, Sity Fatimah Maqruf, Agus Marsheila Salvinia Mastri, Annisa Maulana, Habib Mayasari, Maryati Meisyari, Rinrin Mochammad Mohammad Rachman Waluyo Muh Nashiruddin Muhamad Muhdar Muhammad Ali Rusdi Bedong Muhammad Ibrohim Muhammad Wibbie Wiweka Subono Nabila Amelia Hanisyah Putri Nahrowi Nanda Shafira Ashadi Nariswari, Arinda Inansya Natasya Angelie Ni Iffah Kesuma Ni Kadek Dwi Nanda Restiani Ni Kadek Gina Pramitayani Ni Komang Sulyastini Ni Nyoman Ayu Desy Sekarini Ni Putu Citra Laksmi Ni'mah Nidhomillah, Abd Rofi Fathoni Nis'atul Khoiroh Nis’atul Khoiroh Nur Fadilah Ayu Sandira Nur Khusniyah Indrawati NUR RAHMAWATI Nurfalah, Farika Nurhayati Nurmatias, Faizal Nushobah, Ahmad Royan Octavia, Armelinda Octavia, Icca Oktariza, Wawan Panjaitan, Joice Putri Ulina Parianto Patunah, Siti Pelealu, Nanda Dzikrillah Pratiwi, Putu Irma Purwati Purwiyatno Hariyadi Putri, N. D. S. Putu Diah Prasetiani Putu Eva Yuni Dyantari R. Afnan R. Fadhilah R. Fadilah R. Mutia R. Susilowarno Rahman Rahmat Justan Ratna Wardani Rayhanah, Rayhanah Repi, Viktor Vekky Ronald Riami Rico Nur Ilham Rina Agustina Riska Bimbi Riski Amelia, Riski Rita Mutia Riyanti, Ayu Rosa Dwi Melati Rostina Rushafarani, Yurida S. Subekti Sakoikoi, Kristoper Salmafitri, Nuzulia Salsabila, Imtinan Salundik Samsu Alam Rab saputra, fajar Sa’diyah, Yuni Aminatus septiawan, andri Septiyanti Setiana, I. Shofil Fikri Sipa Unnaziah Siregar, Rendi Robintang Sitanggang, Antonius Nathanael Siti Dewi Winengsih Sitti Jamilah Amin Sitti Satriani Is Sity Fatimah Slamet Riyadi Sri Nurhayati Sri Purwaningsih, Sri Sudirman L Sudradjat Sugihartono, Agus Sugiyanto, Lina Sugiyarta, Ahmad Sulkarnain Sumiati⁷ Suradi, Futeri Maharani Suria Darma Tarigan Susaldi SUSANTI Syahpura, Suraya Kaffi Syamsuhaidi Tarigan, Ronald Tiangat Siregar Titin Novayanti Dey Triayudi , Agung Tsaqib, Muhammad Tamim Ukik Agustina Ulfah Juniarti Siregar Valda, Vania Vebera Maslami Verayanti, Fransisca Diah Ayu Wahyu Handayani Wahyu Kristiningrum Wahyu Purnomo Jati Waluyo , Minto Wardani, W. W. Warif, Muhammad Widodo, Andi Yekti Widya Hermana Yenny Puspitasari Yuly Peristiowati YUNI KURNIAWATI Yuniari, Airin Yusuf, G. M. zahrah nabilah Zai, Sarila Zainal Said Zulfah Zulfah