3,824 research outputs found

    Asymptotic Safety, Singularities, and Gravitational Collapse

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    Asymptotic safety (an ultraviolet fixed point with finite-dimensional critical surface) offers the possibility that a predictive theory of quantum gravity can be obtained from the quantization of classical general relativity. However, it is unclear what becomes of the singularities of classical general relativity, which, it is hoped, might be resolved by quantum effects. We study dust collapse with a running gravitational coupling and find that a future singularity can be avoided if the coupling becomes exactly zero at some finite energy scale. The singularity can also be avoided (pushed off to infinite proper time) if the coupling approaches zero sufficiently rapidly at high energies. However, the evolution deduced from perturbation theory still implies a singularity at finite proper time.Comment: 6 pages, latex. Version to appear in Physics Letters

    Minimal Uncertainty in Momentum: The Effects of IR Gravity on Quantum Mechanics

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    The effects of the IR aspects of gravity on quantum mechanics is investigated. At large distances where due to gravity the space-time is curved, there appears nonzero minimal uncertainty Δp0\Delta p_{0} in the momentum of a quantum mechanical particle. We apply the minimal uncertainty momentum to some quantum mechanical interferometry examples and show that the phase shift depends on the area surrounded by the path of the test particle . We also put some limits on the related parameters. This prediction may be tested through future experiments. The assumption of minimal uncertainty in momentum can also explain the anomalous excess of the mass of the Cooper pair in a rotating thin superconductor ring.Comment: 8 pages, revised version accepted by PR

    Perancangan Basis Data Terdistribusi E-CARGO (Studi Kasus PT. XYZ)

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    PT XYZ adalah salah satu Perusahaan penyedia layanan cargo/ekspedisi yang baru berdiri. Seiring dengan perkembangan bisnis USAha dan kebutuhan masyarakat, PT XYZ selalu berupaya untuk mengembangkan jaringan yang diawali dengan Medan, Palembang (Sumatera Selatan), Jakarta, Bandung, Semarang, Yogyakarta, Solo, Surabaya, Denpasar (Jawa-Bali) dan terus meluas hingga ke pelosok Indonesia. Berkat dukungan sejumlah armada, personil dan minat besar masyarakat, PT XYZ akan menjadi lebih kuat dan berhasil menjaga stabilitasnya.Dalam mengelolah data barang-barang yang dikirim, Perusahaan ekspedisi ini membutuhkan sebuah sistem informasi yang mampu mengolah data pengiriman dan penerimaan barang secara on-line serta terdistribusi yang mampu di akses oleh kantor-kantor pengiriman barangnya. Penerapan basis data terdistribusi dengan metode penyimpanan fragmentasi horisontal dan replikasi akan mampu meningkatkan ketersediaan data dan kinerja sistem pada Sistem Informasi E-Cargo. Ketersediaan data ditingkatkan dengan membuat backup online yang senantiasa up-to-date sedangkan kinerja sistem dapat ditingkatkan dengan membagi beban kerja di antara server master dan server-server slave sehingga beban tidak lagi terpusat pada satu mesin

    Application Of Naive Bayes Classifier Algorithm In Determining New Student Admission Promotion Strategies

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    Data Mining is a process that uses statistical techniques, mathematics, artificial intelligence, machine learning to extract and identify useful information and related knowledge from large databases. Data mining is the process of finding new patterns in data by filtering large amounts of data. Data mining uses pattern recognition technology that is similar to statistical techniques and mathematical techniques. The patterns found can provide useful information for generating economic benefits, effectiveness and efficiency. Algorithm Naive Bayes Classifier is one method of data mining that can be used to support effective and efficient promotion strategies. The Naive Bayes Classifier algorithm is used to predict the interest of the study based on the calculations performed. The data used are new student registration data from 2014 until 2016 at Bina Darma University. The results of this study are new models that are expected to provide important information can be used to assist the Marketing Team of Bina Darma University Palembang in policy making and implementation of appropriate marketing strategy. The results obtained are expected to help to support the promotion strategies that impact on the effectiveness and efficiency of promotion and increase the number of new students who will register

    Desain dan Implementasi Sistem Informasi Manajemen Pelayanan Perizinan Satu Pintu (Simtu) Berbasis Web (Studi Kasus Kabupaten Ogan Komering Ilir)

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    Badan Perizinan dan Penanaman Modal kabupaten Ogan Komering Ilir memiliki tugas, tanggung jawab dan wewenang yang besar di bidang perizinan dan non perizinan. Peningkatan tugas, tanggung jawab dan wewenang tersebut harus diiringi dengan peningkatan sarana dan prasarana pendukung sehingga Badan Perizinan dan Penanaman Modal Kabupaten Ogan Komering Ilir dapat meningkatkan pelayanan yang optimal kepada masyarakat. Untuk mencapai pelayanan umum yang prima kepada masyarakat, dikembangkan Sistem Informasi Pelayanan Satu Pintu (SIMTU) dengan penerapan teknologi informasi sebagai ujung tombak pelayanan kepada masyarakat. Sistem Infomasi Pelayanan Satu Pintu (SIMTU) Kabupaten Ogan Komering Ilir (OKI) yang dikembangkan terdiri dari tiga titik pelayanan yaitu back office , front office dan kios informasi. Sistem Infomasi Pelayanan Satu Pintu (SIMTU) dikembangkan dengan menggunakan pengembangan perangkat lunak SDLC dengan metode analisis data deskriptif kualitatif yang disesuaikan dengan tahap pengembangan perangkat lunak

    Aplikasi Pelayanan Perizinan Berbasis Web pada Kabupaten Ogan Komering Ilir

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    Licensing Agency and Investment Komering Ogan Ilir district has a duty and a great authority in the field of licensing and non-licensing. Increase in duties, responsibilities and authority should be accompanied by an increase in supporting infrastructure and facilities so that Licensing Agency and Investment Ogan Ilir Komering can enhance optimal service to the community. To achieve excellent public services to the community, developed One Stop Service Information System (SIMTU) with the application of information technology as the spearhead of the public service. One Stop Service Information System (SIMTU) Komering Ogan Ilir (OKI) which was developed consisting of three points of service, namely back office, front office and information kiosks. Keywords: Technology, Licensing, Information Systems, and One Stop Servic

    Perbedaan Perubahan Lemak Tubuh Dan Berat Badan Atlet Balap Sepeda Pada Berbagai Intensitas Latihan

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    Penurunan persen lemak dan berat badan dapat terjadi pada latihan endurance. Salah satuolahraga yang termasuk latihan endurance adalah balap sepeda. Tujuan dari penelitian iniuntuk mengetahui apakah terdapat perbedaan berat badan dan persen lemak pada durasilatihan yang berbeda. Sebanyak 9 atlet balap sepeda dengan usia 23±3,2 tahun, tinggi badan168,5±4,2 cm, dan berat badan 60,2±4,6 kg ikut dalam penelitian ini. Perubahan berat badandan persen lemak tubuh diukur dengan menggunakan timbangan CAMRY EF311BWsebelum dan setelah latihan. Intensitas latihan diukur menggunakan alat garmin seri EDG510.Terdapat beda signifikan (p<0,05) pada Perubahan persen lemak tubuh latihan ringandibanding latihan sedang dan latihan berat. Perubahan berat badan menunjukkan perbedaansignifikan (p<0,05) jika dibandingkan antar latihan
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