Hasil Pencarian  ::  Simpan CSV :: Kembali

"Produksi partikel D^*+-meson pada tumbukan proton-proton pada energi pusat massa 13 TeV dengan detektor ALICE dilaporkan dalam tesis ini. Data yang digunakan adalah data tumbukan proton-proton yang dikumpulkan oleh kolaborasi ALICE pada tahun 2016, 2017, dan 2018. Hasil rekonstruksi partikel D^*+-meson kemudian ditampilkan dalam bentuk plot distribusi massa invarian D^*+-meson dalam beberapa rentang momentum yakni 1-36 GeV/c. Penampang lintang D^*+-meson sebagai fungsi momentum dihitung dan dibandingkan dengan perhitungan teori perturbative QCD. Hasil perhitungan penampang lintang D^*+-meson menunjukkan kesesuaian dengan perhitungan teori.

---

Measurement of the production cross section of D^*+-meson in proton-proton collisions at center of mass energy with ALICE detectors is presented in this study. The data collected by ALICE Collaboration in 2016, 2017, and 2018 was used in this work. Invariant mass distributions and production cross sections were measured as a function of momentum in the range 1-36 GeV/c. the production cross sections of D^*+-meson were compared with perturbative QCD model. The measurements were compatible with the theoretical predictions."

"The contact of one deformable body with another lies at the heart of almost every mechanical structure. Here, in a comprehensive treatment, two of the field's leading researchers present a systematic approach to contact problems. Using variational formulations, Kikuchi and Oden derive a multitude of new results, both for classical problems and for nonlinear problems involving large deflections and buckling of thin plates with unilateral supports, dry friction with nonclassical laws, large elastic and elastoplastic deformations with frictional contact, dynamic contacts with dynamic frictional effects, and rolling contacts. This method exposes properties of solutions obscured by classical methods, and it provides a basis for the development of powerful numerical schemes. Among the novel results presented here are algorithms for contact problems with nonlinear and nonlocal friction, and very effective algorithms for solving problems involving the large elastic deformation of hyperelastic bodies with general contact conditions. Includes detailed discussion of numerical methods for nonlinear materials with unilateral contact and friction, with examples of metalforming simulations. Also presents algorithms for the finite deformation rolling contact problem, along with a discussion of numerical examples."

"This augmented, new edition adds discussion of the bats vertical sweetness gradient, eye-hand cross-dominance, models for the swing of a bat, and accuracy of simulations. The book retains its description of dynamic collisions between baseballs, softballs, and bats, and the intricate modeling of these interactions, using only basic math and physical principles. Veteran baseball science author Terry Bahill explains models for the speed and spin of balls and bats and calculations for bat-ball collisions at a level accessible to most students of the science of baseball. Demystifying the most important factors for understanding bat performance-bat weight, moment of inertia, the coefficient of restitution, and characteristics of humans swinging the bats-Dr. Bahill also explains physical aspects of the optimal bat and the sweet spot."

"This thesis presents an experimental and theoretical study of the coherent properties of trapped atomic ensembles at high densities, which are essential to many of the aforementioned applications. The study focuses on how inter-particle interactions modify the ensemble coherence dynamics, and whether it is possible to extend the coherence time by means of external control. The thesis presents a theoretical model which explains the effect of elastic collision of the coherence dynamics and then reports on experiments which test this model successfully in the lab. Furthermore, the work includes the first implementation of dynamical decoupling with ultra-cold atomic ensembles. It is demonstrated experimentally that by using dynamical decoupling the coherence time can be extended 20-fold. This has a great potential to increase the usefulness of these ensembles for quantum computation."