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"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."

"The production of heavy quarks in high-energy experiments offers a rich field to study, both experimentally and theoretically. Due to the additional quark mass, the description of these processes in the framework of perturbative QCD is much more demanding than it is for those involving only massless partons. In the last two decades, a large amount of precision data has been collected by the deep inelastic HERA experiment. In order to make full use of these data, a more precise theoretical description of charm quark production in deep inelastic scattering is needed. This work deals with the first calculation of fixed moments of the NNLO heavy flavor corrections to the proton structure function F2 in the limit of a small charm-quark mass. The correct treatment of these terms will allow not only a more precise analysis of the HERA data, but starting from there also a more precise determination of the parton distribution functions and the strong coupling constant, which is an essential input for LHC physics. The complexity of this calculation requires the application and development of technical and mathematical methods, which are also explained here in detail."

"This book concentrates on areas of controversy in coloproctology that have direct relevance to current management decisions and therapy."

"ABSTRAK Convention On The International Regulation For Preventing Collisions At Sea 1972/COLREG 1972 diratifikasi oleh Indonesia melalui Kepres Nomor 50 Tahun 1979. Dengan terjadinya tubrukan kapal di ALKI maka COLREG 1972 dan Undang-Undang Nomor 17 Tahun 2008 tentang Pelayaran belum maksimal memberikan perlindungan terhadap keselamatan dan keamanan pelayaran di ALKI karena Indonesia belum menetapkan Traffic Separation Schemes (TSS)/ skema jalur pemisah pelayaran di ALKI. Dari penelitian hukum yuridis normatif dengan pertimbangan kepadatan trafik, bahaya navigasi, sudah saatnya Indonesia menetapkan Traffic Separation Scheme (TSS) pada Selat Sunda, Selat Karimata, Laut Jawa Sebelah Barat, Selat Lombok, Selat Makassar, Selat Ombai dan Laut Flores Seblah Tenggara. Dengan terdapatnya kelemahan Pasal 330 UU No. 17 Tahun 2008 tentang Pelayaran, maka perlu direvisi dengan menambahkan perwira kapal dan awak kapal yang lain ikut bertanggung jawab secara pidana apabila lalai melakukan pencegahan kecelakaan kapal. Diperlukannya pengendalian Perairan Indonesia di ALKI melalui eksistensi kekuatan negara sepanjang ALKI. Untuk peningkatan pemahanan dan pengetahuan dalam penanganan Tindak Pidana Pelayaran perlu diadakan pelatihan bersama antara Penyidik dibidang pelayaran yaitu Polri, PPNS Perhubungan, Perwira TNI AL, Kejaksaan, Hakim Pengadilan Negeri, Pengadilan Tinggi dan Hakim Mahkamah Agung."