Development and Testing of Braking and Acceleration Features for Vehicle Advanced Driver Assistance System

Traffic congestion is a constant problem for cities worldwide. The human driving inefficiency and poor urban planning and development contribute to traffic buildup and travel discomfort. An example of human inefficiency is the phantom traffic jam, which is caused by unnecessary braking, causing traffic to slow down, and eventually coming to a stop. In this study, a brake and acceleration feature (BAF) for the advanced driver assistance system (ADAS) is proposed to mitigate the effects of the phantom traffic phenomenon. In its initial stage, the BAF provides a heads-up display that gives information on how much braking and acceleration input is needed to maintain smooth driving conditions, i.e., without sudden acceleration or deceleration, while observing a safe distance from the vehicle in front. BAF employs a fuzzy logic controller that takes distance information from a light detection and ranging (LIDAR) sensor and the vehicle’s instantaneous speed from the engine control unit (ECU). It then calculates the corresponding percentage value of needed acceleration and braking in order to maintain travel objectives of smooth and safe-distance travel. Empirical results show that the system suggests acceleration and braking values slightly higher than the driver’s actual inputs and can achieve 90% accuracy overall

Perancangan E-Learning di SMAN 1 Margahayu

Kegiatan belajar mengajar di sekolah umumnya terbatas pada pertemuan yang dilakukan di kelas. Ketidakhadiran pengajar menjadi salah satu penyebab kegiatan belajar mengajar tidak berlangsung. Hal ini, berdampak pada tidak tersampaikannya materi pada siswa. Sementara itu, e-learning dapat menjadi solusi dalam permasalahan ini. Tujuan penelitian ini ialah membangun rancangan e-learning pada SMAN 1 Margahayu. Metode pendekatan sistem yang digunakan adalah pendekatan objek dengan metode pengembangan prototype. Tools yang digunakan dalam penelitian ini ialah UML. Dengan adanya e-learning, pengajar dapat memberikan materi bahkan jika pertemuan di sekolah tidak dapat terjadi. Bukan hanya itu, murid yang absen di kelas tidak akan tertinggal materi pelajaran. Manfaat lain ialah siswa dapat berdiskusi mengenai materi pelajaran meski di luar jam pelajaran serta memungkinkan siswa mendapatkan materi pendukung selain yang sudah pengajar sampaikan di kelas. Oleh karena itu, perancangan e-learning ini dapat mendukung proses kegiatan belajar mengajar dan menjadi cara baru bagi pengajar dan siswa untuk berinteraksi

Application of Nanotrap technology for high sensitivity measurement of urinary outer surface protein A carboxyl-terminus domain in early stage Lyme borreliosis

Objectives: Prompt antibiotic treatment of early stage Lyme borreliosis (LB) prevents progression to severe multisystem disease. There is a clinical need to improve the diagnostic specificity of early stage Lyme assays in the period prior to the mounting of a robust serology response. Using a novel analyte harvesting nanotechnology, Nanotrap particles, we evaluated urinary Borrelia Outer surface protein A (OspA) C-terminus peptide in early stage LB before and after treatment, and in patients suspected of late stage disseminated LB. Method: We employed Nanotrap particles to concentrate urinary OspA and used a highly specific anti-OspA monoclonal antibody (mAb) as a detector of the C-terminus peptides. We mapped the mAb epitope to a narrow specific OspA C-terminal domain OspA236-239 conserved across infectious Borrelia species but with no homology to human proteins and no cross-reactivity with relevant viral and non-Borrelia bacterial proteins. 268 urine samples from patients being evaluated for all categories of LB were collected in a LB endemic area. The urinary OspA assay, blinded to outcome, utilized Nanotrap particle pre-processing, western blotting to evaluate the OspA molecular size, and OspA peptide competition for confirmation. Results: OspA test characteristics: sensitivity 1.7 pg/mL (lowest limit of detection), % coefficient of variation (CV) = 8 %, dynamic range 1.7-30 pg/mL. Pre-treatment, 24/24 newly diagnosed patients with an erythema migrans (EM) rash were positive for urinary OspA while false positives for asymptomatic patients were 0/117 (Chi squared p < 10-6). For 10 patients who exhibited persistence of the EM rash during the course of antibiotic therapy, 10/10 were positive for urinary OspA. Urinary OspA of 8/8 patients switched from detectable to undetectable following symptom resolution post-treatment. Specificity of the urinary OspA test for the clinical symptoms was 40/40. Specificity of the urinary OspA antigen test for later serology outcome was 87.5 % (21 urinary OspA positive/24 serology positive, Chi squared p = 4.072e-15). 41 of 100 patients under surveillance for persistent LB in an endemic area were positive for urinary OspA protein. Conclusions: OspA urinary shedding was strongly linked to concurrent active symptoms (e.g. EM rash and arthritis), while resolution of these symptoms after therapy correlated with urinary conversion to OspA negative

Rare discovery of sacral “ribs”: a cadaveric case report

Supernumerary ribs are a well-documented congenital anomaly that can occur at any point of the vertebral column, most commonly in the cervical or lumbar region. However, accessory ribs found in the sacrococcygeal region are exceptionally rare and may be difficult to distinguish from other bony manifestations of the pelvic girdle. During cadaveric dissection, a pair of sacral “ribs” were found projecting from the left posterolateral sacral region. The bony projections shared a broad base from the posterior sacrum. The projections followed an anteroinferior trajectory, mimicking the thoracic rib structure. Computed tomography (CT) revealed further bony anomalies, including bilateral ossifications embedded in the sacrotuberous ligament, and a blunt bony protrusion extending toward the ischial spine. Most documented supernumerary ribs in the lumbar and sacrococcygeal regions are asymptomatic and are incidental findings in radiographic studies during the exploration of other medical complaints. Correlated symptoms mentioned in the literature include pelvic pain and decreased hip range of motion, with potential obstetric complications. Owing to their asymptomatic nature, sacral ribs may be underreported. The primary aim of this report is to provide a detailed description of these sacral “ribs” in the unique setting of a cadaveric dissection supplemented with medical imaging to enhance visualization

The geology and ore deposits of the Helmet Peak area, Pima County, Arizona

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PENCEGAHAN KECELAKAAN KERJA DI MV. TEMASEK ATTAKA

Abstraksi - Kecelakaan adalah suatu yang tidak direncanakan atau tidak diduga semula, kecelakaan dapat terjadi sewaktu-waktu dan mempunyai sifat merugikan baik terhadap manusia maupun terhadap alat-alat material. Agar kecelakaan tidak terjadi bisa di cegah dengan pencegahan kecelakaan kerja Metode penelitian yang digunakan adalah metode penelitian kualitatif yang mengatur suatu metode penelitian dengan menggunakan beberapa aspek seperti pengalaman saat praktek laut, melalui studi pustaka, dan dokumentasi Dari hasil penelitian dapat diketahui faktor-faktor yang menyebabkan Kecelakaan adalah kurang disiplin dan tanggung jawab crew kapal dalam perawatan peralatan kerja di kapal, Sehingga dengan adanya pencegahan kecelakaan kerja dengan memperbaiki itu semua kecelakaan dapat diminimalisasi atau bahkan ditiadakan. Kata Kunci : Kecelakaan, pencegahan kecelakaan kerja, perawata