How to distinguish between surgical and non-surgical pneumoperitoneum?

Not all cases of pneumoperitoneum found on abdominal X-ray or computed tomography (CT) scan are caused by hollow viscus perforation. Non-surgical or spontaneous pneumoperitoneum is a repeatedly described entity. However, not all physicians in emergency departments are aware of it, and in such cases unnecessary laparotomy is often performed which reveals no intra-abdominal pathology. Non-surgical pneumoperitoneum can have thoracic, abdominal, gynecological, or other causes. When we acknowledge the possibility of non-surgical pneumoperitoneum, the primary goal is to discern surgical from non-surgical pneumoperitoneum. Identifying cases in which laparotomy can be avoided is important to prevent unnecessary surgery and its associated morbidity and financial costs. In this paper we propose a practical algorithm which may help the attending physicians to distinguish between surgical and non-surgical pneumoperitoneum

Kaon electromagnetic production: constraints set by new data

The CLAS data on the photo-production of K+ off the proton are utilised to study reaction mechanism of the process in frame of the isobaric approach. The missing D13 resonance is shown to be important for successful description of the data in the whole kinematical region. Constructed models provide satisfactory predictions for the process.Comment: 4 pages, 4 figures, contribution to the VIII International Conference on Hypernuclear & Strange Particle Physics, Jefferson Lab, Virginia, U.S.A., October 14-18, 200

How to distinguish between surgical and non-surgical pneumoperitoneum?

Not all cases of pneumoperitoneum found on abdominal X-ray or computed tomography (CT) scan are caused by hollow viscus perforation. Non-surgical or spontaneous pneumoperitoneum is a repeatedly described entity. However, not all physicians in emergency departments are aware of it, and in such cases unnecessary laparotomy is often performed which reveals no intra-abdominal pathology. Non-surgical pneumoperitoneum can have thoracic, abdominal, gynecological, or other causes. When we acknowledge the possibility of non-surgical pneumoperitoneum, the primary goal is to discern surgical from non-surgical pneumoperitoneum. Identifying cases in which laparotomy can be avoided is important to prevent unnecessary surgery and its associated morbidity and financial costs. In this paper we propose a practical algorithm which may help the attending physicians to distinguish between surgical and non-surgical pneumoperitoneum

Risk Margins in the Liability Adequacy Test for Life Insurance

In the present thesis we study risk margins in the liability adequacy test for life insurance. First we look at the theory of risk margins and liability adequacy test. We discuss desirable characteristics of the risk margins and the methods used to their evaluation. We show risk margins from di erent aspects and views as well. In second part of the thesis we introduce the model of product for endowment and we describe contractual cash flows. We also construct generation mortality tables for use in described model. Afterwards we evaluate risk margin for mortality risk using stochastic modelling. Finally we compare calculated risk margin with value of the margin calculated by current approach recommended to calculation of LAT in the Czech Republic and analyse results.Department of Probability and Mathematical StatisticsKatedra pravděpodobnosti a matematické statistikyFaculty of Mathematics and PhysicsMatematicko-fyzikální fakult

Risk Margins in the Liability Adequacy Test for Life Insurance

In the present thesis we study risk margins in the liability adequacy test for life insurance. First we look at the theory of risk margins and liability adequacy test. We discuss desirable characteristics of the risk margins and the methods used to their evaluation. We show risk margins from di erent aspects and views as well. In second part of the thesis we introduce the model of product for endowment and we describe contractual cash flows. We also construct generation mortality tables for use in described model. Afterwards we evaluate risk margin for mortality risk using stochastic modelling. Finally we compare calculated risk margin with value of the margin calculated by current approach recommended to calculation of LAT in the Czech Republic and analyse results.Katedra pravděpodobnosti a matematické statistikyDepartment of Probability and Mathematical StatisticsFaculty of Mathematics and PhysicsMatematicko-fyzikální fakult

Update of High Resolution (e,e'K^+) Hypernuclear Spectroscopy at Jefferson Lab's Hall A

Updated results of the experiment E94-107 hypernuclear spectroscopy in Hall A of the Thomas Jefferson National Accelerator Facility (Jefferson Lab), are presented. The experiment provides high resolution spectra of excitation energy for 12B_\Lambda, 16N_\Lambda, and 9Li_\Lambda hypernuclei obtained by electroproduction of strangeness. A new theoretical calculation for 12B_\Lambda, final results for 16N_\Lambda, and discussion of the preliminary results of 9Li_\Lambda are reported.Comment: 8 pages, 5 figures, submitted to the proceedings of Hyp-X Conferenc

Strangeness Electromagnetic Production on Nucleons and Nuclei

Isobar models for the electromagnetic production of kaons are discussed with emphasis on the K^+ photoproduction at very small kaon angles and K^0 photoproduction on deuteron. Distorted-wave impuls approximation calculations of the cross sections for the electroproduction of hypernuclei are presented on the case of the ^{12}B_\Lambda production.Comment: 9 pages, 7 figures, talk presented at the 10th Int. Conference on Hypernuclear and Strange Particle Physics, Tokai, Japan, Sept. 14 - 18, 200

Low-lying spectra in anharmonic three-body oscillators with a strong short-range repulsion

Three-body Schroedinger equation is studied in one dimension. Its two-body interactions are assumed composed of the long-range attraction (dominated by the L-th-power potential) in superposition with a short-range repulsion (dominated by the (-K)-th-power core) plus further subdominant power-law components if necessary. This unsolvable and non-separable generalization of Calogero model (which is a separable and solvable exception at L = K = 2) is presented in polar Jacobi coordinates. We derive a set of trigonometric identities for the potentials which generalizes the well known K=2 identity of Calogero to all integers. This enables us to write down the related partial differential Schroedinger equation in an amazingly compact form. As a consequence, we are able to show that all these models become separable and solvable in the limit of strong repulsion.Comment: 18 pages plus 6 pages of appendices with new auxiliary identitie