Frobenius-like groups as groups of automorphisms

A finite group FH is said to be Frobenius-like if it has a nontrivial nilpotent normal subgroup F with a nontrivial complement H such that FH/[F,F] is a Frobenius group with Frobenius kernel F/[F,F]. Such subgroups and sections are abundant in any nonnilpotent finite group. We discuss several recent results about the properties of a finite group G admitting a Frobenius-like group of automorphisms FH aiming at restrictions on G in terms of CG(H) and focusing mainly on bounds for the Fitting height and related parameters. Earlier such results were obtained for Frobenius groups of automorphisms; new theorems for Frobenius-like groups are based on new representation-theoretic results. Apart from a brief survey, the paper contains the new theorem on almost nilpotency of a finite group admitting a Frobenius-like group of automorphisms with fixed-point-free almost extraspecial kerne

Familjen i de stora årskullarnas liv - omsorg och hjälp i familjerna bland generationen födda 1945-1950

Only abstract. Paper copies of master’s theses are listed in the Helka database (http://www.helsinki.fi/helka). Electronic copies of master’s theses are either available as open access or only on thesis terminals in the Helsinki University Library.Vain tiivistelmä. Sidottujen gradujen saatavuuden voit tarkistaa Helka-tietokannasta (http://www.helsinki.fi/helka). Digitaaliset gradut voivat olla luettavissa avoimesti verkossa tai rajoitetusti kirjaston opinnäytekioskeilla.Endast sammandrag. Inbundna avhandlingar kan sökas i Helka-databasen (http://www.helsinki.fi/helka). Elektroniska kopior av avhandlingar finns antingen öppet på nätet eller endast tillgängliga i bibliotekets avhandlingsterminaler.Studien granskar familjens roll i de stora årskullarnas (födda 1945-1950) liv, hur värden omsätts till handlingar av omsorg och hjälp som ges åt utflyttade barn och deras familjer samt åt egna föräldrar. Syftet är också att granska huruvida de stora årskullarna på basen av gruppens inre koherens kan beskrivas som en generation. Det empiriska materialet består av en omfattande (N=2628) enkätundersökning som Statistikcentralen utförde 1998. Som metoder tillämpas variansanalys och multipla jämförelser med hjälp av vilka årskullarna jämförs med en äldre (födda 1935-1944) och en yngre åldersgrupp (födda 1951-1970). Förutom åldersgruppen beaktas könets, barnantalets, religiositetens och alkoholkonsumtionens inverkan på hjälpanet. Dessutom granskas inkomsternas inverkan på hjälpen som ges åt utflyttade barn medan relationen till föräldrarna antas inverka på hjälpen som åt dem. Utöver de statistiska metoderna stöder jag mig vid analysen på övrig forskning inom området. Resultaten visar att de stora årskullarna är en familjecentrerad grupp som hjälper och hyser omsorg för familjemedlemmar som inte bor i samma hushåll. Jämfört med den äldre gruppen är årskullarna inte lika familjeorienterade vilket i hög grad beror på att familjens roll förändrats med tiden. Könet har en avgörande inverkan på hjälpandet, oavsett egen ålder hjälper kvinnorna både utflyttade barn och föräldrar mera än männen. Även barnatalet och graden av närhet i relationen till föräldrarna är avgörande för hjälpandet. Beträffande generationsaspekten kan man konstatera att årskullarna är en synnerligen enhetlig grupp där ingen enstaka årskull avviker från signifikant från de övriga. Män och kvinnor skiljer sig i detta avseende inte från varandra liksom bland de två övriga åldersgrupperna. Åldersgruppen kan således sägas vara en homogen grupp och kan påstås utgöra en generation. De viktigaste källorna består av både inhemsk och utländsk forskning kring familjen, familjelivet och generationerna. Riitta Jallinoja har en central ställning som författare till många texter kring temat familj medan diskussionen kring generationerna centrerar kring Karl Mannheims essä The Problem of Generations

Određivanje položaja plovila na moru

Navigacija je pomorska vještina određivanja pozicije broda, njegovog kursa i brzine. Razlikujemo tri načina navigacije: terestrička, astronomska i elektronska navigacija. U prvom poglavlju opisan je detaljni postupak određivanja pozicije plovila na moru te glavne karakteristike brodskog kompasa. Opisan je i način rada GPS prijamnika te njegova primjena u navigaciji

Quality of Reporting and Adherence to ARRIVE Guidelines in Animal Studies for Chagas Disease Preclinical Drug Research: A Systematic Review

Publication of accurate and detailed descriptions of methods in research articles involving animals is essential for health scientists to accurately interpret published data, evaluate results and replicate findings. Inadequate reporting of key aspects of experimental design may reduce the impact of studies and could act as a barrier to translation of research findings. Reporting of animal use must be as comprehensive as possible in order to take advantage of every study and every animal used. Animal models are essential to understanding and assessing new chemotherapy candidates for Chagas disease pathology, a widespread parasitic disease with few treatment options currently available. A systematic review was carried out to compare ARRIVE guidelines recommendations with information provided in publications of preclinical studies for new anti-Trypanosoma cruzi compounds. A total of 83 publications were reviewed. Before ARRIVE guidelines, 69% of publications failed to report any macroenvironment information, compared to 57% after ARRIVE publication. Similar proportions were observed when evaluating reporting of microenvironmental information (56% vs. 61%). Also, before ARRIVE guidelines publication, only 13% of papers described animal gender, only 18% specified microbiological status and 13% reported randomized treatment assignment, among other essential information missing or incomplete. Unfortunately, publication of ARRIVE guidelines did not seem to enhance reporting quality, compared to papers appeared before ARRIVE publication. Our results suggest that there is a strong need for the scientific community to improve animal use description, animal models employed, transparent reporting and experiment design to facilitate its transfer and application to the affected human population. Full compliance with ARRIVE guidelines, or similar animal research reporting guidelines, would be an excellent start in this direction.Fil: Gulin, Julián Ernesto Nicolás. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños ; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Rocco, Daniela Marisa. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños ; Argentina. Ministerio de Ciencia. Tecnología e Innovación Productiva. Agencia Nacional de Promoción Cientifíca y Tecnológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: García Bournissen, Facundo. Gobierno de la Ciudad de Buenos Aires. Hospital General de Niños ; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Izazov integracije senzorskih sustava na kopter

Bespilotna letjelica, kao posljedica tehnološkog napretka, pruža sve više mogućnosti za izradu kompleksnog uređaja koji integrira različite senzore. Spajanje osnovnih funkcionalnih dijelova zahtjeva znanje, vještinu i vrijeme, ali je financijski pristupačnije od nabavke gotovog uređaja. Osim brojnih osnovnih dijelova nužnih za let koptera, integriraju se i senzori – Globalni navigacijski satelitski sustav, Inercijalni navigacijski sustav i kamera. Zbog složenosti koptera razumljiv je rast u cijeni, ali i u širokoj upotrebi kako u geodetske svrhe tako i za brojne druge primjene različitih vrsta senzora. Integracijom navedenih i u radu objašnjenih i detaljno konfiguriranih senzora, njihovih međusobnih povezivanja, prikupljanja i vizualizacije podataka, raste kompleksnost letjelice, ali i njezina primjena u geodeziji – fotogrametrija i daljinska istraživanja, izrada digitalnog ortofota te georeferencirani video. Odluka o samostalnoj izradi koptera ili kupnji gotove letjelice pretežno ovisi o tehničkim znanjima, a zatim i o dostupnom vremenu i raspoloživim financijskim sredstvima, a u radu su priložene cjenovne usporedbe obaju uređaja izabranih kao reprezentativnih

Microbial carbonate build-ups at methane seeps near the upper boundary of the gas-hydrate stability zone in the Black Sea: results of EU project CRIMEA

Extensive dredging carried out in May-June 2004 in the deeper parts of the Dnepr paleo-delta area (NW Black Sea) yielded for the first time chimney-shaped carbonate microbial build-ups, which occur at methane seeps close to upper boundary of the gas-hydrate stability zone (~ 700 m). Carbonate samples taken with a benthic trawl represent fragments of the uppermost, middle and lowest parts of the build-up, which are similar to those found previously at the shallower and deeper methane seeps in the Black Sea. At the same time, the holed, plate-like carbonates in the lowest parts of the build-up provide first indications that gas channels are formed during the earliest growth phase of these microbial structures. Stable carbon isotope analyses of the carbonates from the uppermost fragments gave the d13C values ranging from -33.7 to -36.6 pro mil, while the d13C values of the lowermost fragments are significantly lighter, varying between -42.0 and -44.6 pro mil. Both these types of carbonates indicate that a major portion of the carbonate carbon originates from bacterial oxidation of the seeping methane. Oxygen isotopic values also show differences between the more irregular and porous samples from the uppermost part of the build-up, which are composed of a mixture of aragonite and Mg-calcite (d18O = 0.7 to 0.94 pro mil, and the only Mg-calcite cemented thin slabs of lowermost carbonates (d18O = 1.35 to 1.57 pro mil. The difference in d13C/d18O ratio found in the upper and lower parts of the build-up may reflect the changing of the water temperature and salinity during the chimney growth

Assessment of biological value and safety of food in the diet developing for tourism and recreational activities

The qualitative composition of food for people leading an active life, should be selected based on individual physical characteristics. Anyway, the food must contain all the essential macro and micro el-ements. When the optimal supply structure ensures high performance and primary prevention of many diseases (cardiovascular, atheroscle rosis, cancer, and others), increases immune resistance, and en-hanced protection from the effects of adverse environmental factors. Methodological approaches to estimation the safety and biological value of food production in the Tetrahymena pyriformis. Has done a ranking of food products for the food composition and energy val-ue. Determine the balance of these foods in the daily diets. Offered a table of the calculation of the amount of food for the cultivation of a Tetrahymena pyriformis. Developed and experimentally tested two versions of the environment necessary for the study of biological value and food safety in the Tetrahymena pyriformis