Judul: Development of Spatial Data Management System for Toll Road Assets (Case Study of Bakauheni-Terbanggi Besar Toll Road Section)
Abstrak: Jalan tol merupakan infrastruktur yang memegang peranan penting dalam meningkatkan kesejahteraan ekonomi, sehingga aset-aset yang terkait dengan jalan tol perlu dikelola dengan baik. Kini, pengelolaan aset jalan tol dinilai sulit karna masih dilakukan secara manual dengan data yang sangat banyak. Salah satu solusinya adalah dengan menggunakan suatu Road Asset Management System (RAMS) berbasis geospasial yang dapat mempermudah pengelolaan aset jalan tol secara digital. RAMS telah dikembangkan di berbagai negara, namun di Indonesia sendiri penerapannya masih sangat minim. Penelitian ini bertujuan untuk memperbaiki, melengkapi, dan mengintegrasikan basis data RAMS yang sudah ada pada penelitian sebelumnya dan mengimplementasikannya pada suatu sistem manajemen aset jalan tol sederhana. Data yang digunakan merupakan data spasial dan non-spasial aset jalan tol ruas Bakauheni-Terbanggi Besar. Sistem dikembangan menggunakan Y-Model Webgis Methodology (YWDM) dengan bahasa pemrograman HTML, PHP, JavaScript, dan CSS. RAMS yang dikembangkan berupa sebua WebGIS yang terhubung dengan REST API data aset jalan tol dan dapat menampilkan visualisasi aset jalan tol pada peta online OpenStreetMap, menambahkan aset baru menggunakan file GeoJSON, mencari dan melihat rincian aset, serta melihat rekap aset dalam bentuk grafik. Data aset seperti identifikasi jalan, ramp, akses, rambu jalan, lampu jalan, dan lainnya dengan total 51 tabel data spasial dan 31 tabel data non-spasial tersimpan dalam basis data PosgreSQL. Pengguna yang dapat mengakses sistem ini terbagi atas dua peran, yaitu admin yang dapat mengelola aset seperti pemerintah pusat, pemerintah daerah, BPJT, dan BUJT. Serta publik yang hanya dapat melihat visualisasi dan detail aset. Pengujian fungsionalitas yang dilakukan menunjukkan bahwa sistem dapat berjalan dengan baik., Toll roads are infrastructure that plays an important role in improving economic welfare, so assets related to toll roads need to be managed properly. Now, the management of toll road assets is considered difficult because it is still done manually with a lot of data. One solution is to use a geospatial-based Road Asset Management System (RAMS) that can facilitate the management of toll road assets digitally. RAMS has been developed in various countries, but in Indonesia itself the application is still very minimal. This research aims to improve, complete, and integrate the existing RAMS database in previous studies and implement it in a simple toll road asset management system. The data used is spatial and non-spatial data of the Bakauheni-Terbanggi Besar toll road assets. The system was developed using Y-Model Webgis Methodology (YWDM) with HTML, PHP, JavaScript, and CSS programming languages. RAMS developed in the form of a WebGIS connected to the REST API of toll road asset data and can display visualization of toll road assets on OpenStreetMap online maps, add new assets using GeoJSON files, search and view asset details, and view asset recaps in graphical form. Asset data such as road identification, ramps, access, road signs, street lights, and others with a total of 51 spatial data tables and 31 non-spatial data tables are stored in the PosgreSQL database. Users who can access this system are divided into two roles, namely admins who can manage assets such as the central government, local governments, BPJT, and BUJT. As well as the public who can only see visualizations and
Keyword: Manajemen Aset, Basis Data Spasial, Jalan Tol, YWDM

Judul: Development of Front End Module on Web-Based Geographic Information System for Toll Road Management Using Prototyping Method
Abstrak: Saat ini pencatatan dan pencarian informasi data terkait aset jalan tol masih dilakukan secara manual sehingga informasi yang didapat tidak sesuai dengan kondisi di lapangan. Maka dari itu diperlukan suatu upaya mengelola dan memelihara aset jalan tol sehingga akan tetap layak digunakan. Penelitian ini merupakan lanjutan dari penelitian sebelumnya mengenai Pengembangan Sistem Informasi Geografis Manajemen Aset Jalan Tol Berbasis Web. Penelitian sebelumnya hanya terbatas pada aset perlengkapan jalan. Pada penelitian ini, dilakukan pengembangan sistem informasi geografis untuk manajemen aset jalan tol yang tersedia pada jalan tol Bakauheni – Terbanggi Besar, dengan tujuan mengembangkan sistem informasi geografis yang dapat memberikan informasi kondisi dan menampilkan data RAMP dan MAINROAD jalan tol sebagai acuan dalam pengambilan keputusan manajemen aset. Penerapan sistem informasi geografis untuk jalan tol telah berhasil dilakukan, perancangan dan pengembangan sistem dilakukan menggunakan metode Prototyping dan pengujian dilakukan dengan metode blackbox yang berhasil menampilkan data spasial dan data teknik dari jalan tol ruas Bakauheni - Terbanggi Besar., Currently, the recording and retrieval of data information related to toll road assets is still done manually so that the information obtained is not in accordance with the conditions in the field. Therefore, an effort is needed to manage and maintain toll road assets so that they will remain suitable for use. This research is a continuation of previous research regarding the Development of a Web-Based Geographic Information System for Toll Road Asset Management. Previous research was limited to road equipment assets. In this study, the development of a geographic information system for toll road asset management is carried out on the Bakauheni – Terbanggi Besar toll road, with the aim of developing a geographic information system that can provide condition information and display RAMP and MAINROAD data for toll roads as a reference in making asset management decisions. The application of a geographic information system for the toll road has been successfully carried out, the design and development of the system is carried out using the Prototyping method and testing is carried out using the blackbox method which successfully displays spatial data and technical data from the Bakauheni - Terbanggi Besar toll road section.
Keyword: Jalan Tol, Sistem Informasi Geografis, Manajemen Aset, Prototyping

Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell