49 research outputs found
Non-Standard Errors
In statistics, samples are drawn from a population in a data-generating process (DGP). Standard errors measure the uncertainty in estimates of population parameters. In science, evidence is generated to test hypotheses in an evidence-generating process (EGP). We claim that EGP variation across researchers adds uncertainty: Non-standard errors (NSEs). We study NSEs by letting 164 teams test the same hypotheses on the same data. NSEs turn out to be sizable, but smaller for better reproducible or higher rated research. Adding peer-review stages reduces NSEs. We further find that this type of uncertainty is underestimated by participants
Relacyjny model procesu demontazu w systemie obslugi technicznej maszyn rolniczych
Praca zawiera procedur臋 budowy relacyjnego modelu procesu demonta偶u w systemie obs艂ugi technicznej maszyn rolniczych. Zbudowany model opisuje struktur臋 i zasadnicze cechy rzeczywistego procesu demonta偶u. Stanowi on etap po艣redni pomi臋dzy systemem rzeczywistym a jego algebraicznym modelem operacyjnym.The paper presents the procedure of developing the relational model of disassembling process in the system of technical service of agricultural machines. Developed model describes the structure and gives the principal characteristics of real disassembling process. This is an intermediate stage between the real system and its algebraic operating model
Metoda wartosciowania procesu demontazu w obsludze technicznej maszyn rolniczych
Praca zawiera metod膮 oceny efektywno艣ci demonta偶u w obs艂udze technicznej maszyn rolniczych, kt贸ra umo偶liwia liczbowe oszacowanie efektywno艣ci demonta偶u na etapie projektowania maszyny bez konieczno艣ci budowy i bada艅 prototyp贸w maszyn.The work doscusses a method of the assessment of disassembly effectiveness in the technical service of farm machines, which enables numeral estimation of disassembly effectiveness at the phase of machine design without a necessity of constructing and testing machine prototypes
The technical service of agricultural machines
The technical service of agricultural machines also called maintanance changed during the last years. The existing structure was shut down and the new one is based on private craftman鈥檞orkshop. They contrive better on the difficult market of technical services for agriculture. There are also many barriers in development of these workshops, the most important are: lack of well prepared craftsmen and technologists and modern technical equipments, absolete organization of technological processes and institutions. This sphere of technical services has a future in the infrastructure of a village. It assures unfailing realization of agricultural productive processes and will be a place of employment for graduates majoring in agricultural and forest technology.Obs艂uga techniczna maszyn rolniczych, zwana tak偶e serwisem technicznym lub utrzymywaniem, przesz艂a w ostatnich latach du偶e zmiany. Zlikwidowana zosta艂a jej dotychczasowa struktura i w to miejsce powstaje nowa, kt贸r膮 stanowi膮 zwykle prywatne zak艂ady rzemie艣lnicze. Radz膮 one sobie coraz lepiej na trudnym rynku us艂ug technicznych dla rolnictwa. Jest te偶 wiele barier w rozwoju tych zak艂ad贸w, z kt贸rych najwa偶niejszymi s膮: brak dobrze przygotowanej kadry rzemie艣lnik贸w i technolog贸w oraz nowoczesnego wyposa偶enia technicznego, przestarza艂a organizacja proces贸w technologicznych oraz samych zak艂ad贸w. Jest to przysz艂o艣ciowa sfera us艂ug technicznych w infrastrukturze wsi, kt贸ra zapewni niezawodn膮 realizacj臋 rolniczych proces贸w produkcyjnych i b臋dzie jednym z miejsc pracy absolwent贸w kierunku Technika Rolnicza i Le艣na
Research of park machines dynamics development in chosen region
The entry of the Poland to European Union resulted changes in agriculture. Polish farmers got the possibility of the development,
introducing new technologies and extension of the productive range. The empirical research of the modernization of the machine
park of farms with utilization of structural funds is the aim of the work
Results of the research of returned packaging used for plant protection products
The aim of the work is to check practical realization of system of gathering and neutralizing of the packaging used for the plant
protection products. The system was evaluated on the basis of the research of returned packaging used for pesticides in the chosen
point of their retails sale for the period of one year. The collecting of the information about the number of sold packaging of the
chemical agent for the plant protection and the number of packaging returned after use were the subject of research
The research on damages of modern agricultural tractors
Niezawodno艣膰 ci膮gnika okre艣lana jest jako prawdopodobie艅stwo poprawnego jego funkcjonowania w okre艣lonym czasie i ma
szczeg贸lne znaczenie w warunkach sezonowej produkcji. Czynnikami wp艂ywaj膮cymi na niezawodno艣膰 ci膮gnik贸w i ich zdolno艣膰
do wykonywania pracy s膮 uszkodzenia i zu偶ycia. W pracy przedstawiono badania uszkodze艅 nowoczesnych ci膮gnik贸w rolniczych w aspekcie ich niezawodno艣ci.The reliability of tractor is defined as the probability of his correct functioning in the determinate time and has a special
significance in conditions of the seasonal production. The damages and waste are the factors influencing reliability of tractors and
ability to carry out the work. The investigations of the damages of modern agricultural tractors were presented in this article, in the
aspect of their reliability
Output parameters of the agricultural tractor diagnosis
Przeprowadzono badania diagnostyczne ci膮gnik贸w rolniczych dw贸ch marek, w celu por贸wnania parametr贸w wyj艣ciowych
(informacji cz膮stkowych) niezb臋dnych do oceny ich stanu technicznego. Do bada艅 wykorzystano dwa diagnostyczne programy
komputerowe, kompatybilne z oprogramowaniem badanych ci膮gnik贸w. Wyniki bada艅 b臋d膮 podstaw膮 do pr贸by racjonalizacji
liczby parametr贸w, kt贸ra wska偶e kierunek zmian w diagnostyce ci膮gnik贸w rolniczych.Diagnostic studies were performed with two brands of agricultural tractors in order to compare the output parameters (partial
information) necessary to assess their condition. In the study two diagnostic programs were used which were compatible with
a software of tractors. Rationalization of the parameters has been achieved which indicates the direction of changes in the
diagnosis of machine and will contribute to reduce the cost of diagnostic tests