6,787 research outputs found

    Quantifying Changes in the Land Over Time: A Landsat Classroom Activity

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    Students in grades 7-10 analyze land cover change in order to help them grasp the extent, significance, and consequences of land cover change; and to introduce them to the perspective of space-based observations. Educational levels: High school, Middle school

    Technology Teacher: Navigating by Good Gyrations

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    This activity describes some simple, yet impressive gyroscopic demonstrations using only a bike wheel with a quick-release hub. Then, itIt explains both the angular momentum principle that tends to keep the wheel in a rigid plane and the effects of the external forces that create precession. And all without a single equation!No equations are used during the activity. Understanding the forces at work on a gyroscope will raise your students' consciousness of all kinds of devices and phenomena, from how and why a football, a rifle, and a Frisbee disk work to how an aircraft or a spacecraft can keep itself on course. Educational levels: Middle school, High school

    Technology Teacher: Listening for Rings from Space

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    This activity introduces gravitational waves and the NASA technology being developed to detect them in space. It involves building a metaphorical interferometer that demonstrates how the mission (and all interferometry) works. Educational levels: Middle school, High school

    Safe discontinuation of nilotinib in a patient with chronic myeloid leukemia: a case report

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    Case presentation. We report the case of a 64-year-old Caucasian man diagnosed with chronic-phase chronic myeloid leukemia in April 2005. After 4 years of treatment with imatinib, he became intolerant to the drug and was switched to nilotinib. Two years later, he decided to stop nilotinib. Undetectable molecular response persisted for 30 months after discontinuation of the drug. Introduction. Although there is a considerable amount of data in the literature on safe discontinuation of first-generation tyrosine kinase inhibitor therapy in patients with chronic myeloid leukemia, little is known about discontinuation of second-generation tyrosine kinase inhibitor therapy. Most previous studies have been focused on dasatinib, and the few cases of nilotinib withdrawal that have been reported had a median follow-up of 12 months. To the best of our knowledge, the present report is the first to describe nilotinib withdrawal with 30 months of follow-up. Conclusion: Our present case suggests that nilotinib withdrawal is safe for patients with chronic myeloid leukemia who achieve a stable undetectable molecular response. Our patient was homozygous for killer immunoglobulin-like receptor haplotype A, previously reported to be a promising immunogenetic marker for undetectable molecular response. We recommend additional studies to investigate patient immunogenetic profiles and their potential role in complete response to therap

    PEMANFAATAN BIND9 DALAM PEMBUATAN DOMAIN PADA VIRTUAL HOST MENGGUNAKANLINUX

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    Domain adalah nama unik yang diberikan untuk mengidentifikasi nama server di jaringan komputer ataupun internet. Nama domain berfungsi untuk mempermudah client di internet pada saat melakukan akses ke server, selain itu dipakai juga untuk mengingat nama server yang dikunjungi tanpa harus mengenal deretan angka yang rumit yang dikenal sebagai IP address. Pada awalnya, sistem penamaan IP address menggunakan sistem host.txt yang berisikan daftar kombinasi IP address dengan nama dari setiap komputer yang terhubung ke internet. IP address yang akan digunakan untuk sistem penamaan sebuah host name disimpan kedalam databases server yang merupakan fungsi dari DNS server. Pada sistem linux, BIND (Berkeley internet name domain) menjadi software default sebagai paket DNS server dalam semua distribusi linux. Pemanfaatan BIND dalam pembuatan nama domain agar dapat membangun ruang penyimpanan untuk content digital merupakan konsep dari pembuatan virtual host

    ANALISIS EFEKTIVITAS PERAN KEPALA DESA BERDASARKAN UNDANG - UNDANG NOMOR 6 TAHUN 2014 ( STUDI DI DESA SOBONTORO KECAMATAN BOYOLANGU KABUPATEN TULUNGAGUNG )

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    The village head has an important role in his position as a leader who is close to the community. So, it is important for the village community to participate in realizing and evaluating the performance of the village head. This research itself aims to analyze the role of village heads in carrying out their duties in accordance with the provisions contained in Law Number 6 of 2014 concerning Villages. This research was conducted with a focus on Sobontoro Village. The research method used is yuridical empirical using library study data collection techniques, data collection through interviews, observation and documentation studies. The collected data was analyzed qualitatively to describe the role of the village head in managing Sobontoro Village. The results of this research reveal that the village head has a very important role in managing Sobontoro Village in accordance with Law Number 6 of 2014. His role includes managing the village budget, making development decisions, coordinating with related agencies, and empowering the community. Based on the explanation of the research results along with the factors inhibiting the Village Head in carrying out his role in carrying out his duties. Carrying out actualization and evaluation that leads to financial and income renewal. The problems faced are related to human resources, especially in the internal government of Sobontoro Village. The head provides training involving related parties/agencies according to the type and needs of each member of the internal village government so that the work process from all lines can be carried out. adequate and meets good targets in the running of the village government system

    Time Domain Studies of X-ray Shot Noise in Cygnus X-1

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    We investigate the variability of Cygnus X-1 in the context of shot moise models, and employ a peak detection algorithm to select individual shots. For a long observation of the low, hard state, the distribution of time intervals between shots is found to be consistent with a purely random process, contrary to previous claims in the literature. The detected shots are fit to several model templates and found to have a broad range of shapes. The fitted shots have a distribution of timescales from below 10 milliseconds to above 1 second. The coherence of the cross spectrum of light curves of these data in different energy bands is also studied. The observed high coherence implies that the transfer function between low and high energy variability is uniform. The uniformity of the tranfer function implies that the observed distribution of shot widths cannot have been acquired through Compton scattering. Our results in combination with other results in the literature suggest that shot luminosities are correlated with one another. We discuss how our experimental methodology relates to non-linear models of variability.Comment: Accepted for publication in Astrophysical Journal on July 16, 200

    Development of DFM Enterprise car rental booking system / Julia Nasa Alus

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    The idea to develop this project rise after conducted an interview session with the stakeholder which is the owner of DFM Enterprise, Puan Azar Binti Aziz. The methodology used in completing this project is Waterfall Model. When each of the phases are finished, the problems are being solved as the objectives achieved. There are two type of booking system, which is stand-alone system and online booking system. The purpose of developing this system are to assist stakeholder in organize the information, to minimize the redundancy of booking and to assist in calculating the booking price. To solve the problem faced by the stakeholder, there are several objectives that need to be completed such as to gather and analyse requirement from stakeholder, to design and to develop the suggested system. As for this project the stand-alone system is more suitable compare to the online booking system. This is due to the limitation of stand-alone system. Therefore, by using it in this project, the limitation can be minimize. At the end of this project, the problems are being solved as the system can make booking and store the information of customers. Finally, there are several suggestions made as the recommendation for future works or improvements

    Empirical Study of Car License Plates Recognition

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    The number of vehicles on the road has increased drastically in recent years. The license plate is an identity card for a vehicle. It can map to the owner and further information about vehicle. License plate information is useful to help traffic management systems. For example, traffic management systems can check for vehicles moving at speeds not permitted by law and can also be installed in parking areas to se-cure the entrance or exit way for vehicles. License plate recognition algorithms have been proposed by many researchers. License plate recognition requires license plate detection, segmentation, and charac-ters recognition. The algorithm detects the position of a license plate and extracts the characters. Various license plate recognition algorithms have been implemented, and each algorithm has its strengths and weaknesses. In this research, I implement three algorithms for detecting license plates, three algorithms for segmenting license plates, and two algorithms for recognizing license plate characters. I evaluate each of these algorithms on the same two datasets, one from Greece and one from Thailand. For detecting li-cense plates, the best result is obtained by a Haar cascade algorithm. After the best result of license plate detection is obtained, for the segmentation part a Laplacian based method has the highest accuracy. Last, the license plate recognition experiment shows that a neural network has better accuracy than other algo-rithm. I summarize and analyze the overall performance of each method for comparison

    Producer of world-beaters

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