Search Results

1 - 10 of 22 items

  • Author: Michał Kozłowski x
Clear All Modify Search

Abstract

This article is a continuation of the authors’ study on the ways to ensure the quality and safety of aeronautical data and information. In its content the Integrated Aeronautical Information Package was presented and its fundamental part AIP Poland was described. In addition, the docking guidance system A-VDGS, being an example of implementation of telematics system in air transport, was discussed as well as its requirements and schematic representation were attached. In the following part of the publication an analysis of AIP Poland in terms of the mentioned aircrafts’ docking systems was performed and a discrepancy between the requirements published in ICAO Annex 14 and published information for aerodrome EPWA was noticed. The indicated case of published incompatibility confirms the necessity to develop and implement a complex method of aeronautical data and information quality assurance at all stages of aeronautical data and information chain, which will be the subject of authors’ further study.

Abstract

This article is a continuation of the Authors’ study on the ways to ensure the quality and safety of aeronautical data and information. This time, however, the legal requirements for aeronautical data and information were briefly described and then the concept of purpose and scope of Shewhart control charts’ implementation, presented in [2], was broadened and it was proposed to refer the calculated upper (GLK) and lower (DLK) control limits to the requirements set out in the legal specification including in particular the accuracy values out of the Harmonised List from the Eurocontrol Specification [13]. In order to illustrate the proposed modification, an example of such a card for the measured aeronautical obstacles was presented, considering two cases: that these obstacles are located in Area 3 and in Area 2. Analysed issues will be the subject of Authors’ further study.

Abstract

This article is a continuation of the Authors’ study on issues concerning safety of aeronautical data and information. This time, however, the main focus was placed on identification and analysis of information surplus in aeronautical systems. After a short introduction the redundant reliability structure was characterised and types of excesses used in aeronautical systems were distinguished. Special attention was paid to the title information surplus. Then, aeronautical data and information were described – the purpose and forms of their publication and the fundamental categories of aeronautical data and information were identified. In the following part of the publication, information surpluses for indicated categories of aeronautical data and information, published in various forms, were identified and the risk profile of information surplus appearance was analysed. The whole article was summed up with conclusions. Analysed issues will be the subject of Authors’ further study.

Abstract

This article is a continuation of the Authors’ study on the ways to ensure the quality and safety of aeronautical data and information in the entire process (considered as the supply chain) of those data and information creation, collection, processing and publication. In its content attention was paid to air traffic proactive safety management aa well as the need to manage identified incompatibilities. The risk assessment and tolerability matrices arising from ICAO specifications were presented, and then on their bases, the concept of such matrices determination for aeronautical data and information chain was developed. In addition, the criteria for consequences’/effects’ of incompatibilities appearance assessment related strictly to air transport were elaborated. In the summary directions for further analysis were pointed out, leading to carrying out a full risk assessment analysis of the discussed chain with the use of the FMEA method.

Abstract

The paper presents the issue of ensuring the continuity of the operation at the airport. Requirements and objectives relating to business continuity management have been defined in accordance with ISO 22301 international standard. Conducted a study of reliability issues operation of the airport. Defined the function of the reliability and operational readiness of the airport. Presented the concept of using function of operational readiness in the risk assessment for the continuity of the airport.

Abstract

The paper presents the problem of determining the minimum acceptable level of products and services of airport business continuity. Conducted a study of legal requirements and operational needs. Characterized components of BCMS (ISO 22301). Determined the relationship between measures of the reliability and capacity in the airport BCMS. On this basis, presented a concept of use the reliability gamma-percent resource measure and RCM methods in the airport BCMS.

Abstract

The aim of the study was to determine the impact of different feed rations (0.5, 0.8, 1.1% fish biomass) on the rearing parameters of pikeperch, Sander lucioperca (L.), reared in a recirculating aquaculture system. The study comprised two experiments. In the first, the material used had been sorted by a mean body weight of 35.5 g, while in the second the pikeperch were divided into three size classes: smallest individuals (class S) with a mean body weight of 59.5 g, medium-sized individuals (class M) with a mean weight of 69.3 g, and largest individuals (class L) with a mean body weight of 84.8 g. The experiments ran for 42 days. At the conclusion of the experiments, the highest body weight and length, daily growth rate, and specific growth rate were attained by the group of fish fed the ration of 1.1% of the fish biomass in both experiments I and II. The feed conversion ratio was also the lowest in this feed ration group, and it differed significantly statistically among the experimental groups (P < 0.05). The feed ration of 0.5% of the fish biomass was only sufficient to maintain vital functions, but it contributed only slightly to growth. The different feed rations did not have a significant impact on the final value of the body weight coefficient of variation of the pikeperch reared in the two experiments. The results of the experiment also indicated that pikeperch is a species with weak stock hierarchy and domination structure.

Abstract

This study examined the effect of visual implant elastomers (VIE) and coded wire tags (CWT) on the growth, survival, and tag retention of juvenile European whitefish, Coregonus lavaretus (L.), (mean body weight 18.7 ± 0.4 g, mean body length 9.7 ± 0.4 cm). The VIE tags were implanted subcutaneously in the anterior head, and the CWTs were implanted intramuscularly under the left gill operculum. The experiment consisted of two stages. The first stage (70 days) examined the effects of tagging on growth and survival, while the second stage (days 71-140) focused on assessing tag retention. Daily and specific growth rates, feed conversion factor, condition factor, coefficient of body weight variation, and survival did not differ significantly between the control fish and those tagged with the VIE tags and CWTs. Tag retention was high in the fish tagged with both VIE tags (100%) and CWTs (93%).

Abstract

The paper presents the concept of a method ensuring quality of aeronautical data. European Union (among others UE 73/2010) as well as international (among others ICAO Annex 15) regulations introduce a number of requirements regarding the quality and safety of aeronautical data. Those directives set up a complementary regulations system. However with their objective and scope they determine mainly the specifications and requirements that are to be implemented and compatible. Mentioned regulations also refer to selected international standards (e.g. ISO 19157), focused on quality and safety of geographic data and information. Nevertheless within the scope of considered regulations and norms no algorithms and methods of ensuring required quality in the process of aeronautical data collection and processing were determined. Taking into account the identified needs, authors proposed the application of statistical method for process quality management – six-sigma.

Abstract

The paper presents the results of research on the relationship between topography of undulated morainic plateau of postglacial landscape and distribution of organic carbon stocks in soil toposequences. The mean value of the soil organic carbon stocks (SOCS) for Retisols/Luvisols (RT/LV) was statistically lower than for the Phaeozems/Gleysols (PH/GL) but for RT/LV a higher variation of SOCS in comparison to PH/GL was observed. On the basis of Pearson correlation coefficient, the cartographic depth to water (DTW), the topographic wetness index (TWI) and the saga wetness index (SWI) were the most strongly correlated with the SOCS from among 13 analysed topographic attributes. In addition, the DTW was more correlated with SOCS than other topographic variables. Moreover, the DTW based on the channel networks with 2 ha flow initiation thresholds better correlate with SOCS than DTW obtained on the basis of channel networks with 1 ha and 4 ha flow initiation thresholds. Using Stepwise multiple regression analysis (SMLR), we concluded that the topographic attributes controlling the soil water content and slope shape had most impact on SOCS of the undulated morainic plateau of agricultural ecosystem. In this landform, where the RT/LV and PH/GL soil sequences dominate, the SOCS can be estimated by the DTW, TWI and GC (general curvature) with an estimation error of 0.21 kg m−2. In view of the increasing availability of LiDAR data and power of GIS tools, the use of topographic metrics to assess spatial variability of soil properties will play an increasingly important role in the estimation of soil properties.