The reactor antineutrino anomaly and low energy threshold neutrino experiments

Short distance reactor antineutrino experiments measure an antineutrino spectrum a few percent lower than expected from theoretical predictions. In this work we study the potential of low energy threshold reactor experiments in the context of a light sterile neutrino signal. We discuss the perspectives of the recently detected coherent elastic neutrino-nucleus scattering in future reactor antineutrino experiments. We find that the expectations to improve the current constraints on the mixing with sterile neutrinos are promising. We also analyse the measurements of antineutrino scattering off electrons from short distance reactor experiments. In this case, the statistics is not competitive with inverse beta decay experiments, although future experiments might play a role when compare it with the Gallium anomaly.Comment: 9 pages, 6 figures, 1 table, matches published versio

Storm-time changes of geomagnetic field at MAGSAT altitudes (325-550 Km) and their comparison with changes at ground locations

The values of H, X, Y, Z at MAGSAT altitudes were first expressed as residuals delta H, delta X, delta Y, delta Z after subtracting the model HMD, XMD, YMD, ZMC. The storm-time variations of H showed that delta H (Dusk) was larger (negative) than delta H (Dawn) and occurred earlier, indicating a sort of hysteresis effect. Effects at MAGSAT altitudes were roughly the same (10% accuracy) as at ground, indicating that these effects were mostly of magnetospheric origin. The delta Y component also showed large storm-time changes. The latitudinal distribution of storm-time delta H showed north-south asymmetries varying in nature as the storm progressed. It seems that the central plane of the storm-time magnetospheric ring current undergoes latitudinal meanderings during the course of the storm

Analisa Rancangan Pipe Support pada Sistem Perpipaan High Pressure Vent Berdasarkan Stress Analysis dengan Pendekatan Caesar II

Perancangan sistem perpipaan yang baik dan aman sangat dibutuhkan untuk menjamin kelangsungan dari proses serta menjamin keamanan. Untuk mengatasi besarnya tegangan yang terjadi akibat pembebanan maka diperlukan analisis. Pada tugas akhir ini akan analisis tegangan Pepipaan High Pressure Vent dengan pendekatan CAESAR II. Pada hasil Stress Hydrotest Load masing masing segmen node tidak ada yang melebihi batasan allowable stress yang diijinkan yaitu 35000 psi. stress yang terjadi pada Hydrotest Load, besar stress yang paling besar pada node 740 yaitu sebesar 13606.2 psi. Pada hasil Stress Sustained load masing masing segmen node tidak ada yang melebihi batasan allowable stress yang diijinkan yaitu 20000 psi, besar stress yang paling besar pada node 740 yaitu sebesar 8106.1 psi. Pada hasil Stress Thermal load masing masing segmen node menggunakan support Resting maupun Guide-Resting tidak ada yang melebihi batasan allowable stress yang diijinkan. Stres yang paling besar terjadi pada jenis support Guide-Resting terjadi pada node 775 yaitu sebesar 11590,8 psi. Untuk hasil nozzle check pada kondisi Thermal load besarnya moment arah longitudinal, moment hoop melebihi batasan allowable yang diijinkan untuk jenis support resting maupun jenis support guide, maka diberikan support untuk mengurangi besarnya moment ,yaitu ditambah support pada 4 support pada pipa yang mendekati nozzle vessel

Automating mobile application development: UML-based code generation for Android and Windows Phone

This paper proposes a MDD approach for mobile application development, which includes modeling and code generation strategies for An- droid and Windows Phone. UML class and sequence diagrams are employed for modeling mobile applications and code is generated from this model. To support the automatic code generation, GenCode was re-structured and ex- tended to meet the particularities of these two platforms. As result, GenCode’s current version is able to automatically generate Java-Android and C# codes, according to the specified application model and target platform. Finally, case studies are used to demonstrate the proposed approach, as well as to validate the code generation tool