INVESTIGATION OF THE USE OF 3-D PRINTER PLATFORM AS BUILDING BLOCK FOR RAPID DESIGN OF RESEARCH AND MANUFACTURING TOOL

This thesis attempts to show how an open source 3-D printer platform, the self replicating rapid prototype (RepRap), could be used to accelerate the development of research and manufacturing tools. Two projects are shown as examples, both utilizing components of the 3-D printer platform. The first project is to develop an instrument capable of performing automated large-area four-point probe measurements. A modified RepRap 3-D Printer with a four-point probe in place of the 3-D printer head is utilized as a precision positioning platform. The printer together with custom designed measurement circuit and software performs automated measurement on multiple points on the sample. Three-part experiments were performed to validate the system performance and it was found to be comparable to existing commercial equipment. The developed system is fully open sourced and cost 70% less than manual proprietary systems. The second project tried to build large size fused filament fabrication (FFF) 3-D printers (2 x 1 x 0.6 meters) by retrofitting an existing CNC machine frame with FFF print head and single board computer running open source 3-D printer controller software. A variety of 3-D object was printed to showcase the printer capability to print simple and complex objects. The result of both projects is comparable to existing commercial equipment and showed how researchers, engineers and makers could use existing open source 3-D printer platform to accelerate the development of research and manufacturing tools

TEKNOLOGI BUOY UNTUK OBSERVASI IN-SITU PERAIRAN SEKITAR RUMPON

Aplikasi pemanfaatan buoy PLUTO sudah berhasil diujikan di perairan budidaya rumput laut (Wakatobi) tahun 2010, tambak (Pekalongan), muara pelabuhan perikanan Pekalongan dan keramba jaring apung Tuna di Wakatobi (2013). Pada tulisan ini dilakukan kajian secara teknis dan teoritis untuk ditempatkan di perairan sekitar rumpon. Paper ini mencoba menilai aspek teknologi observasi in-situ dengan memanfaatkan buoy untuk memahami relasi penangkapan ikan di sekitar rumpon dengan parameter lingkungan perairan. Menurut literatur kajian ini masih jarang dilakukan dan mungkin belum pernah dilakukan, khususnya untuk pemantauan perairan sekitar rumpon dengan data secara menerus. Hasilnya adalah buoy perlu dilengkapi dengan sensor suhu, salinitas, oksigen terlarut, keasaman, klorofil-a, dan arus. Pemasangan pada rumpon cukup diikat saja, dan tidak mengubah perilaku dan kebiasaan nelayan dalam memasang rumpon

Communication Between TSX Micro 37-21 PLCs on Beverage Production Plant

Programmable Logic Controller (PLC) is the most famous controller in industry. Because the process in industry is getting more and more complex than before, the USAge of more than one PLC is needed and the communication between them have to be existed. This paper describes about the study of communicating two Schneider TSX Micro 37-21 PLCs in order to control the miniature of beverage production. The usual (and expensive) way to communicate them is using converter module TSX P ACC 01. Less expensive way uses original converter cable TSX PCX 1031 that connect to the ports of PLCs (TER and AUX port) which will be explained here. PL7 Pro V 4.0 software is used to program the PLCs. The communication cannot be established due to some improper addressing. The exploration is continued to the serial communication. It is found that the system uses RS 485

PENGEMBANGAN PERMAINAN “RUN BOBBY! FOOD!” DENGAN MENGGUNAKAN MICROSOFT KINECT

Tujuan dari penelitian ini adalah untuk menghasilkan sebuah permainan pada platform PC dengan menggunakan teknologi Microsoft Kinect. Teknologi ini digunakan untuk menyediakan pengalaman bermain yang lebih baik sehingga bisa lebih menarik perhatian pengunjung pameran. Microsoft Kinect digunakan untuk mendeteksi gerakan tubuh manusia sebagai pemain. Selain itu, Kinect juga digunakan sebagai media interaksi antara aplikasi dengan pengguna. Metode penelitian yang digunakan dibagi menjadi identifikasi masalah, pengumpulan data, perancangan aplikasi, implementasi, dan evaluasi. Pengumpulan data dilakukan dengan kuesioner, observasi, studi pustaka, dan wawancara kepada ahli. Perancangan aplikasi “Run Bobby! Food!” dilakukan dengan metode perancangan aplikasi scrum. Evaluasi dilakukan dengan dua pendekatan, yaitu kuesioner dan wawancara kepada ahli. Hasil dari penelitian ini adalah 96,1% responden puas dengan aplikasi.Kata Kunci: computer vision, exhibition, kinect, object detection, scru

UJI PERFORMANSI BUOY PLUTO UNTUK PERINGATAN DINI PENCEMARAN PERAIRAN

Aplikasi buoy (pelampung) untuk berbagai keperluan di Indonesia sudah bukan hal yang baru. Ada yang dipergunakan untuk navigasi, pemantauan tsunami, penelitian, perikanan dan energi. Kementerian Kelautan dan Perikanan (KKP) telah mengembangan buoy PLUTO (singkatan Perairan selaLU termoniTOr) tahun 2010. Awalnya buoy PLUTO ini dipergunakan untuk memantau kualitas perairan budidaya rumput laut di Wakatobi dengan sistem non-telemetri. Tahun 2013 dikembangkan kapasitasnya memiliki sistem telemetri. Hasilnya diujikan untuk peringatan dini pencemaran di perairan pelabuhan perikanan Pekalongan. Hasilnya menunjukkan hal positif bahwa dengan memakai 3 sensor saja, yaitu suhu, salinitas dan oksigen terlarut (DO), pencemaran yang terjadi dapat terdeteksi. Demikian pula sistem telemetri berjalan dengan baik

ANALISIS PEMANFAATAN DATA KUALITAS PERAIRAN UNTUK PERENCANAAN ZONASI PESISIR

Perairan pesisir pulau Wangi-wangi di kabupaten Wakatobi, Sulawesi Tenggara telah mengalami tekanan aktifitas manusia (antropogenik) sejak menjadi kabupaten baru tahun 2003. Tekanan antropogenik diukur menggunakan parameter kualitas air (suhu dan oksigen terlarut). Tujuan riset ini adalah menganalisis pemanfaatan data pemonitoran waktu serial dan pemanfaatannya untuk perencanaan zonasi perairan, yang dikaitkan dengan data parameter kualitas air. Dinamika perairan pesisir telah terjadi pada musim angin timur dan barat, pada kedalaman 5 meter dan 25 meter. Hasil menunjukkan kegunaan data waktu serial untuk dinamika zonasi perairan pesisir. Bagian timur dan utara perairan direkomendasikan untuk zona konservasi, sementara zona pemanfaatan lainnya dialokasikan buat sub-zona perikanan berkelanjutan (rumput laut

Multiwavelength Study on Solar and Interplanetary Origins of the Strongest Geomagnetic Storm of Solar Cycle 23

We study the solar sources of an intense geomagnetic storm of solar cycle 23 that occurred on 20 November 2003, based on ground- and space-based multiwavelength observations. The coronal mass ejections (CMEs) responsible for the above geomagnetic storm originated from the super-active region NOAA 10501. We investigate the H-alpha observations of the flare events made with a 15 cm solar tower telescope at ARIES, Nainital, India. The propagation characteristics of the CMEs have been derived from the three-dimensional images of the solar wind (i.e., density and speed) obtained from the interplanetary scintillation data, supplemented with other ground- and space-based measurements. The TRACE, SXI and H-alpha observations revealed two successive ejections (of speeds ~350 and ~100 km/s), originating from the same filament channel, which were associated with two high speed CMEs (~1223 and ~1660 km/s, respectively). These two ejections generated propagating fast shock waves (i.e., fast drifting type II radio bursts) in the corona. The interaction of these CMEs along the Sun-Earth line has led to the severity of the storm. According to our investigation, the interplanetary medium consisted of two merging magnetic clouds (MCs) that preserved their identity during their propagation. These magnetic clouds made the interplanetary magnetic field (IMF) southward for a long time, which reconnected with the geomagnetic field, resulting the super-storm (Dst_peak=-472 nT) on the Earth.Comment: 24 pages, 16 figures, Accepted for publication in Solar Physic

Review of nanomaterials in dentistry: interactions with the oral microenvironment, clinical applications, hazards, and benefits.

Interest in the use of engineered nanomaterials (ENMs) as either nanomedicines or dental materials/devices in clinical dentistry is growing. This review aims to detail the ultrafine structure, chemical composition, and reactivity of dental tissues in the context of interactions with ENMs, including the saliva, pellicle layer, and oral biofilm; then describes the applications of ENMs in dentistry in context with beneficial clinical outcomes versus potential risks. The flow rate and quality of saliva are likely to influence the behavior of ENMs in the oral cavity, but how the protein corona formed on the ENMs will alter bioavailability, or interact with the structure and proteins of the pellicle layer, as well as microbes in the biofilm, remains unclear. The tooth enamel is a dense crystalline structure that is likely to act as a barrier to ENM penetration, but underlying dentinal tubules are not. Consequently, ENMs may be used to strengthen dentine or regenerate pulp tissue. ENMs have dental applications as antibacterials for infection control, as nanofillers to improve the mechanical and bioactive properties of restoration materials, and as novel coatings on dental implants. Dentifrices and some related personal care products are already available for oral health applications. Overall, the clinical benefits generally outweigh the hazards of using ENMs in the oral cavity, and the latter should not prevent the responsible innovation of nanotechnology in dentistry. However, the clinical safety regulations for dental materials have not been specifically updated for ENMs, and some guidance on occupational health for practitioners is also needed. Knowledge gaps for future research include the formation of protein corona in the oral cavity, ENM diffusion through clinically relevant biofilms, and mechanistic investigations on how ENMs strengthen the tooth structure

MENYELAMI BINUS BUSINESS SCHOOL : STUDI ETNOGRAFI SETELAH 1 TAHUN REBRANDING - REPOSITIONING

MENYELAMI BINUS BUSINESS SCHOOL : STUDI ETNOGRAFI SETELAH 1 TAHUN REBRANDING - REPOSITIONIN