Query Response TIME Comparison Nosqldb Mongodb with Sqldb Oracle

Penyimpanan data saat ini terdapat dua jenis yakni relational database dan non-relational database. Kedua jenis DBMS (Database Managemnet System) tersebut berbeda dalam berbagai aspek seperti per-formansi eksekusi query, scalability, reliability maupun struktur penyimpanan data. Kajian ini memiliki tujuan untuk mengetahui perbandingan performansi DBMS antara Oracle sebagai jenis relational data-base dan MongoDB sebagai jenis non-relational database dalam mengolah data terstruktur. Eksperimen dilakukan untuk mengetahui perbandingan performansi kedua DBMS tersebut untuk operasi insert, select, update dan delete dengan menggunakan query sederhana maupun kompleks pada database Northwind. Untuk mencapai tujuan eksperimen, 18 query yang terdiri dari 2 insert query, 10 select query, 2 update query dan 2 delete query dieksekusi. Query dieksekusi melalui sebuah aplikasi .Net yang dibangun sebagai perantara antara user dengan basis data. Eksperimen dilakukan pada tabel dengan atau tanpa relasi pada Oracle dan embedded atau bukan embedded dokumen pada MongoDB. Response time untuk setiap eksekusi query dibandingkan dengan menggunakan metode statistik. Eksperimen menunjukkan response time query untuk proses select, insert, dan update pada MongoDB lebih cepatdaripada Oracle. MongoDB lebih cepat 64.8 % untuk select query;MongoDB lebihcepat 72.8 % untuk insert query dan MongoDB lebih cepat 33.9 % untuk update query. Pada delete query, Oracle lebih cepat 96.8 % daripada MongoDB untuk table yang berelasi, tetapi MongoDB lebih cepat 83.8 % daripada Oracle untuk table yang tidak memiliki relasi.Untuk query kompleks dengan Map Reduce pada MongoDB lebih lambat 97.6% daripada kompleks query dengan aggregate function pada Oracle

Konsistensi dan Kerugian Penerapan Ketentuan Insentif Pajak

Insentif pajak umumnya diberlakukan dalam upaya menarik investasi kususnya investasi asing kedalam suatu negara. Jenis-jenis insentif antara lain: pengurangan tarih PPh, tax holidays ( tidak dikenakan PPh untuk suatu perode tertentu, investment allowances dan tax credits ( pengurangan pajak didasarkan atas jumlah investasi), penyusutan dipercepat, pembebasan atas pajak tak langsung dll. Dalam pelaksanaannya insentif pajak selalu menuai perdebatan yang panjang apakah benar insentif pajak yang diberikan itu dapat berpengaruh menarik investasi atau sebaliknya apakah justru merugikan penerimaan negara. Bagi yang setuju berpendapat bahwa insentif diperlukan untuk meningkatkan investasi dan kemudian dapat menciptakan lapangan kerja dan keuntungan sosial ekonomi lainnya

The Analysis of the Bank Interest Influence and Exchange Rate Towards Composite Stock Price Index in Indonesia Using Vector Error Correction Model Approach

This study aims to analyze the influence of bank interest and exchange rate towards composite stock price index in Indonesia under the period of January 2010-December 2016. The method applied is Vector Error Correction Model (VECM). The findings show that this method aces to show the pace of adjusting balance from the short period up to long period towards stock price index variable. The gap between bank interest level and the exchange rate has the low impact towards composite stock price index. For a longer period, the exchange rate would bring negative impact to composite stock price in Indonesia. Meanwhile, in a short period, it would not affect exchange rate and bank interest rate towards stock price index in Indonesia.   Keywords: Stock Price, Exchange Rate, Vector Error Correction Model, Bank Interest Rat

Tinjauan Pendampingan Pastoral Terhadap Remaja yang Kecanduan Game Online di HKBP Magelang

Penelitian ini bertujuan untuk menganalisa untuk mengkaji remaja yang kecanduan game online oleh remaja HKBP Magelang dari perspektif pendampingan pastoral. Penelitian ini dianalisis dengan menggunakan Teori Pendampingan Pastoral. Metode yang digunakan yaitu metode kualitatif dengan jenis penelitian deskriptif analisis. Penelitian kualitatif memiliki pengertian sebagai penelitian yang dilakukan secara intensif, terperinci terhadap suatu lembaga, organisme atau gejala yang melalui data berupa kata-kata yang tertulis maupun tidak tertulis atau lisan dari perilaku dan orang orang yang diamati. Teknik pengumpulan data yang digunakan di dalam penelitian ini yaitu metode wawancara. Hasil dari penelitian ini yaitu kecanduan game online yang dialami oleh remaja HKBP Magelang disebabkan oleh beberapa faktor seperti adanya perasaan tertantang, perasaan bangga, rasa bosan, dan lingkungan pertemanan. Dampak negatif kecanduan game online yaitu pada aspek spiritual mereka tidak dapat fokus terhadap aktivitas rohaniah dan kurang aktif dalam kegiatan gerejawi seperti ibadah, pendalaman alkitab, doa, refleksi pribadi, melainkan mereka lebih memilih menghabiskan waktu dengan handphone untuk bermain game online. Hasil penelitian yang ditemukan oleh penulis yaitu Gereja HKBP Magelang telah menerapkan pendampingan pastoral yang berlandaskan pada edukasi. Pendampingan pastoral yang dilakukan oleh HKBP sangat penting karena telah menolong remaja HKBP Magelang untuk bertumbuh mengaktualisasikan dirinya terlebih agar tidak bertumbuh menjadi pribadi yang berperilaku buruk akibat kecanduan game online

Metastability in Josephson transmission lines

Thermal activation and macroscopic quantum tunneling in current-biased discrete Josephson transmission lines are studied theoretically. The degrees of freedom under consideration are the phases across the junctions which are coupled to each other via the inductances of the system. The resistively shunted junctions that we investigate constitute a system of N interacting degrees of freedom with an overdamped dynamics. We calculate the decay rate within exponential accuracy as a function of temperature and current. Slightly below the critical current, the decay from the metastable state occurs via a unique ("rigid") saddlepoint solution of the Euclidean action describing the simultaneous decay of the phases in all the junctions. When the current is reduced, a crossover to a regime takes place, where the decay occurs via an "elastic" saddlepoint solution and the phases across the junctions leave the metastable state one after another. This leads to an increased decay rate compared with the rigid case both in the thermal and the quantum regime. The rigid-to-elastic crossover can be sharp or smooth analogous to first- or second- order phase transitions, respectively. The various regimes are summarized in a current-temperature decay diagram.Comment: 11 pages, RevTeX, 3 PS-figures, revised versio

Quantum Nucleation in a Ferromagnetic Film Placed in a Magnetic Field at an Arbitrary Angle

We study the quantum nucleation in a thin ferromagnetic film placed in a magnetic field at an arbitrary angle. The dependence of the quantum nucleation and the temperature of the crossover from thermal to quantum regime on the direction and the strength of the applied field are presented. It is found that the maximal value of the rate and that of the crossover temperature are obtained at a some angle with the magnetic field, not in the direction of the applied field opposite to the initial easy axis.Comment: 15 pages, RevTex, 3 PostScript figures. To appear in Phys. Rev.

Crossovers in the thermal decay of metastable states in discrete systems

The thermal decay of linear chains from a metastable state is investigated. A crossover from rigid to elastic decay occurs when the number of particles, the single particle energy barrier or the coupling strength between the particles is varied. In the rigid regime, the single particle energy barrier is small compared to the coupling strength and the decay occurs via a uniform saddlepoint solution, with all degrees of freedom decaying instantly. Increasing the barrier one enters the elastic regime, where the decay is due to bent saddlepoint configurations using the elasticity of the chain to lower their activation energy. Close to the rigid-to-elastic crossover, nucleation occurs at the boundaries of the system. However, in large systems, a second crossover from boundary to bulk nucleation can be found within the elastic regime, when the single particle energy barrier is further increased. We compute the decay rate in the rigid and in the elastic regimes within the Gaussian approximation. Around the rigid-to-elastic crossover, the calculations are performed beyond the steepest descent approximation. In this region, the prefactor exhibits a scaling property. The theoretical results are discussed in the context of discrete Josephson transmission lines and pancake vortex stacks that are pinned by columnar defects.Comment: 13 pages, RevTeX, 7 PS-figure

Macroscopic Quantum Tunneling of a Fluxon in a Long Josephson Junction

Macroscopic quantum tunneling (MQT) for a single fluxon moving along a long Josephson junction is studied theoretically. To introduce a fluxon-pinning force, we consider inhomogeneities made by modifying thickness of an insulating layer locally. Two different situations are studied: one is the quantum tunneling from a metastable state caused by a single inhomogeneity, and the other is the quantum tunneling in a two-state system made by two inhomogeneities. In the quantum tunneling from a metastable state, the decay rate is estimated within the WKB approximation. Dissipation effects on a fluxon dynamics are taken into account by the Caldeira-Leggett theory. We propose a device to observe quantum tunneling of a fluxon experimentally. Required experimental resolutions to observe MQT of a fluxon seem attainable within the presently available micro-fabrication technique. For the two-state system, we study quantum resonance between two stable states, i.e., macroscopic quantum coherence (MQC). From the estimate for dissipation coefficients due to quasiparticle tunneling, the observation of MQC appears to be possible within the Caldeira-Leggett theory.Comment: 30 pages LaTeX including 11 PS figures, using jpsj.sty. To be published on J. Phys. Soc. Jpn. Overestimates for damping amplitude is correcte

Magnetic Field Dependence of Macroscopic Quantum Tunneling and Coherence of Ferromagnetic Particle

We calculate the quantum tunneling rate of a ferromagnetic particle of $\sim 100 \AA$ diameter in a magnetic field of arbitrary angle. We consider the magnetocrystalline anisotropy with the biaxial symmetry and that with the tetragonal symmetry. Using the spin-coherent-state path integral, we obtain approximate analytic formulas of the tunneling rates in the small $\epsilon (=1- H/H_c)$-limit for the magnetic field normal to the easy axis ($\theta_H = \pi/2$), for the field opposite to the initial easy axis ($\theta_H = \pi$), and for the field at an angle between these two orientations ($\pi/2 << \theta_H << \pi$). In addition, we obtain numerically the tunneling rates for the biaxial symmetry in the full range of the angle $\theta_H$ of the magnetic field ($\pi/2 < \theta_H \leq \pi$), for the values of \epsilon =0.01 and 0.001.Comment: 25 pages of text (RevTex) and 4 figures (PostScript files), to be published in Phys. Rev.