Compton Scattering in Jets: A Mechanism for ∼\sim 0.4 and \lsim 0.2 Mev Line Production

We show that gamma ray line emission at $\sim$0.4 MeV and \lsim 0.2 MeV can be produced by Compton scattering of beamed radiation in the jets of Galactic black hole candidates. This mechanism has the novel feature of not invoking the presence of $e^+$--$e^-$ pairs. To produce the two lines we employ a symmetric double sided jet with bulk flow velocity of about 0.5 c and incident beam radiation with a hard energy spectrum. We show that the two lines can be seen at viewing angle cosines relative to the jet ranging from 0.2 to 0.6. This comprises 40\% of the total solid angle. In addition, the line radiation is approximately 10\% polarized. Depending on the bulk flow and viewing angle the model can produce lines at other energies as well. In particular a broad feature near 1 MeV can be seen by viewing the jet close to its axis. Our model can also accommodate single line spectra if the beamed gamma ray emission or the jets themselves are asymmetric.Comment: 10 pages, uuencoded compressed postscript with figures, NRL94-05-0

An Analysis of Generational Differences among Active Duty Members

There seems to be a widely held belief that different generations have different attitudes toward work, organizations, and co-workers. Clearly, these observed differences have implications for managers and leaders. Actions taken by leaders might be misunderstood by junior organizational members, leading to undesirable outcomes. Considering that many generational groups are represented within the Air Force, there is a need to analyze and understand potential generational differences. With the exception of the Smola and Sutton (2002) study, little empirical research has explored the extent to which these differences actually exist and whether differences exist among Air Force members. This research explores the extent to which differences exist among three generations of Air Force members, and the affects these potential differences have on leadership strategies. The generational groups studied were Baby Boomers (1946-1964), Generation X (1965-1978), and Millennials (1979-1994). Hypotheses were developed based on generational characteristics and tested using a questionnaire that includes 77 items to assess general work attitudes, attitudes towards job and organization, and individual preferences toward work processes. The results of the study indicate that while generational differences were shown to exist, significant differences among the groups accounted for a small proportion of the variables tested. Knowing these findings, if a leader or manager relies on generational stereotypes to establish human resource management policies and practices, they will be incorrectly applying leadership at least half of the time. Instead of focusing on generational stereotypes, leaders should focus on an individual\u27s current stage of life. An individual\u27s stage of life will more accurately reflect his/her attitudes towards work, loyalty to the organization, and job satisfaction

Is the High-Energy Emission from Centaurus A Compton-Scattered Jet Radiation?

We consider whether the hard X-ray and soft gamma-ray emission from Centaurus A is beamed radiation from the active nucleus which is Compton-scattered into our line-of-sight. We derive the spectrum and degree of polarization of scattered radiation when incident beamed radiation is scattered from a cold ($kT<<m_ec^2$) electron cloud moving with bulk relativistic motion along the jet axis, and calculate results for an unpolarized, highly-beamed incident power-law photon source. We fit the OSSE data from Centaurus A with this model and find that if the scatterers are not moving relativistically, then the angle the jet makes with respect to our line-of-sight is $61^\circ\pm 5^\circ$. We predict a high degree of polarization of the scattered radiation below $\sim300$ keV. Future measurements with X-ray and gamma-ray polarimeters could be used to constrain or rule out such a scenario.Comment: 12 pages, Postscript file with 3 Figures, NRL 017-331-09

JT9D engine diagnostics. Task 2: Feasibility study of measuring in-service flight loads

The feasibility of measuring JT9D propulsion system flight inertia loads on a 747 airplane is studied. Flight loads background is discussed including the current status of 747/JT9D loads knowledge. An instrumentation and test plan is formulated for an airline-owned in-service airplane and the Boeing-owned RA001 test airplane. Technical and cost comparisons are made between these two options. An overall technical feasibility evaluation is made and a cost summary presented. Conclusions and recommendations are presented in regard to using existing inertia loads data versus conducting a flight test to measure inertia loads

Diagnostics and correction of teachers’ professional deformation during the retraining

Представлен опыт работы по профилактике и коррекции профессиональной деформации педагогов в процессе их профессиональной переподготовкиIn the article author presents some experience of prevention and correction of teacher’s professional deformation during the process of professional retrainin

Evidence for an Additional Heat Source in the Warm Ionized Medium of Galaxies

Spatial variations of the [S II]/H-Alpha and [N II]/H-Alpha line intensity ratios observed in the gaseous halo of the Milky Way and other galaxies are inconsistent with pure photoionization models. They appear to require a supplemental heating mechanism that increases the electron temperature at low densities n_e. This would imply that in addition to photoionization, which has a heating rate per unit volume proportional to n_e^2, there is another source of heat with a rate per unit volume proportional to a lower power of n_e. One possible mechanism is the dissipation of interstellar plasma turbulence, which according to Minter & Spangler (1997) heats the ionized interstellar medium in the Milky Way at a rate ~ 1x10^-25 n_e ergs cm^-3 s^-1. If such a source were present, it would dominate over photoionization heating in regions where n_e < 0.1 cm^-3, producing the observed increases in the [S II]/H-Alpha and [N II]/H-Alpha intensity ratios at large distances from the galactic midplane, as well as accounting for the constancy of [S II]/[N II], which is not explained by pure photoionization. Other supplemental heating sources, such as magnetic reconnection, cosmic rays, or photoelectric emission from small grains, could also account for these observations, provided they supply to the warm ionized medium ~ 10^-5 ergs s^-1 per cm^2 of Galactic disk.Comment: 10 pages, 1 figur

PECULIARITIES OF CORONARY REVASCULARIZATIONS IN PATIENTS WITH DIAGNOSED LUNG CANCER AND CONCOMITANT ISCHEMIC HEART DISEASE

The object of the study:&nbsp;coronary revascularization in patients with malignant lung diseases and concomitant ischemic heart disease. The problem to be solved:&nbsp;selection of the optimal tactics for coronary bypass grafting simultaneously with lung resections. Main scientific results:&nbsp;an individual approach to the choice of tactics for carrying out simultaneous operations in patients with malignant lung diseases and concomitant ischemic heart disease is proposed. It has been shown that performing coronary artery bypass grafting simultaneously with lung resections, according to the proposed methods, allows minimizing surgical trauma and eliminating the influence of additional risk factors associated with cardiopulmonary bypass (CPB). The area of practical use of research results:&nbsp;surgical hospitals. An innovative technological product:&nbsp;methods for performing simultaneous coronary (artery) bypass grafting in patients with malignant lung diseases, based on the use of sternotomy, thoracotomy and mini-thoracotomy approaches. The area of application of an innovative technological product:&nbsp;clinical practice of performing simultaneous operations for combined pathology of the heart and lungs in medical institutions of a general surgical profile

"Ausländischer Agent": Wie könnte man in Russland unter dem Druck des Gesetzes überleben

Im Jahr 2012 wurde in Russland das allgemein so genannte »Agentengesetz« (Gesetz über »ausländische Agenten«) verabschiedet, das die Struktur des Dritten Sektors und den Alltag vieler russischer nichtkommerzieller Organisationen (NKO, im Weiteren auch: NGOs) verändert hat. Unter Vertretern russischer NGOs, ausländischer Stiftungen und gesellschaftlicher Organisationen hat sich die Meinung verfestigt, dieses Gesetz sei repressiv und bezwecke eine verstärkte Kontrolle über unabhängige NGOs. In diesem Beitrag soll erklärt werden, warum dem so ist und was es heute bedeutet, »ausländischer Agent« zu sein

Pharmacogenomic Management of Familial Hypercholesterolemia: An Integrative Review of the Literature

The purpose of this thesis is to examine familial hypercholesterolemia (FH) and emerging pharmacogenomics therapies that propose to lower serum low density lipid (LDL) levels. The search of various data bases resulted in nine research articles being selected for review. Syntheses of the articles suggest emerging phamacogenomic drug therapy can improve treatment outcomes for individuals with a diagnosis of FH. The Human Genome Project (HGP) has had far reaching applications for genomic technologies and pharmacagenomic interventions, tailored to human conditions associated with select genomic traits. Synthesis of nine research articles demonstrate that little is known on the topic and reveals extensive gaps in the evidence. This thesis concludes with implications for nursing education, practice, policy and research along with limitations are noted