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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur
Suryadwanti, Novia
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Civil Engineering, Building, Construction & Architecture

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An Exploration of Cyclists' Preferences that Influence Route Choice to Recreation in Yogyakarta during COVID-19 Isheka, Raihan Pasha; Habibi Kamal, Muhammad Iqbal; Suryadwanti, Novia; Radiansyah, Kusuma Aji
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 2 (2023): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i2.64870

Abstract

People's travel behavior has changed significantly as a result of the COVID-19 pandemic. The growing number of cyclists, particularly those who ride for recreation, and how they view the options for recreational riding routes are two of the elements that are being impacted. Cycling route preferences may be viewed differently than they were prior to the pandemic. It will be crucial to understand cyclists' behavior while choosing their routes in order to choose the development, especially for cycling infrastructure. This research aims to explain the perceptions of recreational cyclists regarding the influential factors in determining their routes. The data for this study was collected from 340 respondents who use bicycles for recreation in Yogyakarta City. A questionnaire was used to collect data by examining the factors that influence cyclists in determining their routes, such as infrastructure conditions, traffic conditions, environmental conditions, and travel plans, using a Likert scale. Through the questionnaire, socio-demographic characteristics of the respondents were obtained, revealing that the majority were male, with incomes below Rp 1,500,000, and aged below 25 years. The analysis methods used in this study were descriptive analysis, importance score analysis, and chi-square tests between the characteristics of the cyclists and each factor. The results showed that the most important factors for recreational cyclists in determining their routes in Yogyakarta City are the availability of street lighting facilities (4.34), good road conditions (4.31), the presence of dedicated bicycle lanes (4.30), low traffic volume (4.30), and the natural environment (4.29). Additionally, the frequency of recreational cycling statistically correlates significantly with some factors, such as the availability of bicycle lanes, bike boxes, and low pollution levels.
Kajian Alternatif Peningkatan Kinerja Jaringan Bus TransJogja: Lesson-learned Transformasi Sistem Bus di Korea Selatan Suryadwanti, Novia; Seonha, Lee
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 18 No. 1 (2022): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v18i1.49089

Abstract

TransJogja merupakan salah satu bus komuter dan moda alternatif utama yang secara resmi diperkenalkan oleh Dinas Perhubungan Daerah Istimewa Yogyakarta pada bulan Maret 2008. Moda alternatif ini diperkenalkan untuk mengurangi tingkat kemacetan yang terus meningkat, untuk mendorong penggunaan angkutan umum dan menyediakan lebih banyak alternatif moda bagi warga. Namun, Menurut PUSTRAL, persentase pengendara sepeda motor di Kota Yogyakarta mencapai 73,4% dari total modal share. Tidak dapat disangkal bahwa meningkatnya jumlah kendaraan pribadi dan rendahnya biaya bahan bakar telah berkontribusi pada pilihan moda di kota. Untuk meningkatkan minat masyarakat dalam menggunakan angkutan umum, maka perlu dilakukan pembenahan sistem jaringan pelayanan bus. Dalam penelitian ini, diusulkan dua alternatif perbaikan untuk mengatasi beberapa permasalahan pada jaringan. Saran tersebut diambil dari lesson-learned di Korea Selatan. Mendorong penggunaan angkutan umum diyakini sebagai cara yang efektif untuk meningkatkan kinerja jaringan. Saran tersebut diuji dengan menggunakan model simulasi lalu lintas makroskopik pada jalan di pusat perbelanjaan utama yaitu Malioboro. Hasil penelitian menunjukkan bahwa mendorong penggunaan angkutan umum dengan melarang penggunaan angkutan pribadi termasuk mobil dan sepeda motor dapat menurunkan penggunaan mobil pribadi dan pengemudi sepeda motor masing-masing hingga 2878 dan 3374 perjalanan per hari. Sedangkan pengendara sepeda dan TransJogja mengalami peningkatan masing-masing sekitar 1.389 dan 4.465 perjalanan per hari. Selain itu, saran untuk memulai reformasi sistem bus besar-besaran juga diusulkan. Di Korea Selatan, hampir 90% penduduk Seoul puas dengan reformasi tersebut. Kecepatan bus rata-rata telah meningkat, jumlah kecelakaan turun, dan pengguna angkutan bus bertambah hingga lebih dari 700.000 penumpang per tahun.
The Effect of Mortar Mixture Variations on the Compressive Strength and Ultrasonic Pulse Velocity Nugroho, Maris Setyo; Ma'arif, Faqih; Widodo, Slamet; Rachmi, Dewi; Fajriani, Qonaah; Suryadwanti, Novia; Setiawan, Wildan
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 18 No. 2 (2022): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v18i2.55256

Abstract

This paper examines the correlation between compressive strength, porosity, and ultrasonic wave propagation in mortar. The research was conducted at the Yogyakarta State University Building Materials Laboratory. The study used an experimental method, mortar was made with variations in the ratio of cement and fine aggregate 1:3, 1:4, 1:5, 1:6, and 1:7 with a phase of 0.48. The manufacture of test objects in the form of a cube measuring 5x5x5 cm refers to SNI 03-6825-2002. Tests were carried out at the age of 3, 7, 14, 21, and 28 days with three samples per test age. The data was processed by quantitative descriptive method to determine the relationship between the variables, especially the relationship between wave propagation speed and compressive strength, as well as its relationship with the porosity value. The results of compressive strength and wave propagation speed are directly proportional to the age of the test. With the results of the compressive strength at 1:3, 1:4, 1:5, 1:6, and 1:7 variants, respectively 31.12 MPa, 19.83 MPa, 12.25 MPa, 5.38 MPa, and 3.89 MPa and wave propagation speed of 3827.67 m/s, 3641.7 m/s, 3561.3 m/s, 2019,0 m/s, and 1691.0 m/s. Then the porosity values are 11.12%, 12.88%, 16.36%, 17.60%, and 22.06%. The compressive strength has a correlation that is directly proportional to the logarithmic speed of wave propagation, the higher the value of the compressive strength, the higher the UPV value, and inversely proportional to the porosity value as well as the speed of the wave propagation which is inversely proportional to the porosity value. The higher the porosity value, the lower the compressive strength value and the UPV value.
Co-Authors Fajriani, Qonaah Habibi Kamal, Muhammad Iqbal Isheka, Raihan Pasha Ma'arif, Faqih Maris Setyo Nugroho Rachmi, Dewi Radiansyah, Kusuma Aji Seonha, Lee Setiawan, Wildan Slamet Widodo