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    Tytuł:
    Comparative Study of the Accuracy of AIS and ARPA Indications. Part 1. Accuracy of the CPA Indications
    Autorzy:
    Wawruch, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/117390.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Automatic Identification System (AIS)
    ARPA
    Closest Point of Approach (CPA)
    accuracy
    CPA Accuracy
    comparative study
    radar tracking
    AIS target
    Opis:
    According to the IMO recommendation when the target data from radar tracking and AIS are both available and the association criteria are fulfilled such that the radar and AIS information are considered as for one physical target, then as a default condition in radar equipment should be automatically selected and displayed the AIS target symbol and the alphanumerical AIS target data only. The article presents research conducted in real sea conditions on the reliability of information presented by the ship's AIS and ARPA about the passing distance with the other vessel tracked by radar equipment and fitted with AIS.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 3; 439-443
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prioritizing and modelling of putative drug target proteins of Candida albicans by systems biology approach
    Autorzy:
    Ismail, Tariq
    Fatima, Nighat
    Muhammad, Syed
    Zaidi, Syed
    Rehman, Nisar
    Hussain, Izhar
    Tariq, Najam us
    Amirzada, Imran
    Mannan, Abdul
    Powiązania:
    https://bibliotekanauki.pl/articles/1038391.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    Candida albicans
    drug target identification
    protein modeling
    Opis:
    Candida albicans (Candida albicans) is one of the major sources of nosocomial infections in humans which may prove fatal in 30% of cases. The hospital acquired infection is very difficult to treat affectively due to the presence of drug resistant pathogenic strains, therefore there is a need to find alternative drug targets to cure this infection. In silico and computational level frame work was used to prioritize and establish antifungal drug targets of Candida albicans. The identification of putative drug targets was based on acquiring 5090 completely annotated genes of Candida albicans from available databases which were categorized into essential and non-essential genes. The result indicated that 9% of proteins were essential and could become potential candidates for intervention which might result in pathogen eradication. We studied cluster of orthologs and the subtractive genomic analysis of these essential proteins against human genome was made as a reference to minimize the side effects. It was seen that 14% of Candida albicans proteins were evolutionary related to the human proteins while 86% are non-human homologs. In the next step of compatible drug target selections, the non-human homologs were sequentially compared to the human microbiome data to minimize the potential effects against gut flora which accumulated to 38% of the essential genome. The sub-cellular localization of these candidate proteins in fungal cellular systems indicated that 80% of them are cytoplasmic, 10% are mitochondrial and the remaining 10% are associated with the cell wall. The role of these non-human and non-gut flora putative target proteins in Candida albicans biological pathways was studied. Due to their integrated and critical role in Candida albicans replication cycle, four proteins were selected for molecular modeling. For drug designing and development, four high quality and reliable protein models with more than 70% sequence identity were constructed. These proteins are used for the docking studies of the known and new ligands (unpublished data). Our study will be an effective framework for drug target identifications of pathogenic microbial strains and development of new therapies against the infections they cause.
    Źródło:
    Acta Biochimica Polonica; 2018, 65, 2; 209-218
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of computer identification and location algorithm in small far infrared target recognition of ship under surge interference
    Autorzy:
    Zhu, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/260230.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    computer identification
    target position estimation
    location
    ship
    infrared target
    surge interference
    Opis:
    The small far infrared target of ship in surge interference is easy to have visual deviation causing the low accuracy of target positioning and the bad target identification performance. In order to improve the accuracy of far small infrared targets recognition of ship under surge interference, this paper proposed far small infrared target recognition algorithm of ship based on distributed target position estimation and DOA location in computer vision model for constructing coherent distributed source array model of far small infrared target distribution of ship. This algorithm used MUSIC algorithm for the beamforming processing of far small infrared target echo model of ship. Combined with the adaptive filtering algorithm we carried out the surge interference suppression and the estimation of central direction of arrival and angle spread of far small infrared target of ship through multidimensional spectrum peak searching algorithm, realizing the joint estimation of distance of ship target, DOA and frequency parameters, so as to realize the accurate positioning and recognition of targets. Simulation results show that using this method for the far small infrared target recognition of ship under surge interference, the spectral peak sharpness of spectral peak search of target position is high, side-lobe suppression performance is good, which shows the high accuracy of target position estimation and location, the accuracy and anti-interference performance of far small infrared target recognition of ship is good, and has superior performance.
    Źródło:
    Polish Maritime Research; 2017, S 3; 171-181
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation method of collision risk by using true motion
    Autorzy:
    Imazu, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/117062.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    collision risk
    true motion
    ships manoeuvering
    Closest Point of Approach (CPA)
    ARPA
    Line of Predicted Collision (LOPC)
    Obstacle Zone by Target (OZT)
    Automatic Identification System (AIS)
    Opis:
    It is necessary to develop a useful application to use big data like as AIS for safety and efficiency of ship operation. AIS is very useful system to collect targets information, but this information is not effective use yet. The evaluation method of collision risk is one of the cause disturb. Usually the collision risk of ship is evaluated by the value of the Closest Point of Approach (CPA) which is related to a relative motion. So, it becomes difficult to find out a safety pass in a congested water. Here, Line of Predicted Collision (LOPC) and Obstacle Zone by Target (OZT) for evaluation of collision risk are introduced, these values are related to a true motion and it became visible of dangerous place, so it will make easy to find out a safety pass in a congested water.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 1; 65-70
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radar Image Processing and AIS Target Fusion
    Autorzy:
    Heymann, F.
    Banyś, P.
    Saez, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/116637.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    e-Navigation
    Radar Image Processing, Radar
    Automatic Identification System (AIS)
    AIS Target
    AIS and Radar Fusion
    Collision Avoidance
    Maritime Traffic
    Opis:
    Collision avoidance is one of the high-level safety objectives and requires a complete and reliable description of maritime traffic situation. A combined use of data provided by independent data sources is an approach to improve the accuracy and integrity of traffic situation related information. In this paper we study the usage of radar images for automatic identification system (AIS) and radar fusion. Therefore we simulate synthetic radar images and evaluate the tracking performance of the particle filter algorithm as the most promising filter approach. During the filter process the algorithm estimates the target position and velocity which we finally compare with the known position of the simulation. This approach allows the performance analysis of the particle filter for vessel tracking on radar images. In a second extended simulation we add the respective AIS information of the target vessel and study the gained level of improvement for the particle filter approach. The work of this paper is integrated in the research and development activities of DLR Institute of Communications and Navigation dealing with the introduction of data and system integrity into the maritime traffic system. One of the aimed objectives is the automatic assessment of the traffic situation aboard a vessel including integrity information.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 3; 443-448
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Automatic Identification System on Safety of Navigation at Sea
    Autorzy:
    Stupak, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/117256.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    marine navigation
    Automatic Identification System (AIS)
    safety at sea
    Safety of Navigation
    Gulf of Gdansk
    vessel traffic service (VTS)
    Radar Target
    Radar Tracking
    Opis:
    Detection of small crafts/targets, in particular, sailing yachts with the ship's radar is not always possible. Radar reflectors are used to improve their detection. The AIS (Automatic Identification System) transmits position, motion vector and identification signals of a vessel to other ships and VTS (Vessel Traffic Services) centers . This system significantly increases the possibility to detect small crafts. The paper presents results of comparative study of using information from the Automatic Identification System and from radar to determine the accuracy of tracking the position and motion vector of ships in the Gulf of Gdansk. Possibilities and limitations of the AIS are also presented.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 3; 337-341
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of miRNAs and their potential targets in halophyte plant Thellungiella halophila
    Autorzy:
    Panahi, B.
    Mohammadi, S.A.
    Ebrahimie, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/81192.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microRNA
    gene expression
    halophytic plant
    Thellungiella halophila
    Expressed Sequence Tag programme
    target protein
    gene identification
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spatially Diverse ISAR Imaging for Classification Performance Enhancement
    Autorzy:
    Brisken, S.
    Matthes, D.
    Mathy, T.
    Worms, J. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/226557.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    inverse synthetic aperture radar
    multistatic radar
    non-cooperative target identification
    Opis:
    One popular approach to the problem of Non-Cooperative Target Identification is the use of 2D Inverse SAR images. Methods to successfully identify a target include the comparison of a set of scattering centers in the ISAR image to a database or the estimation of target dimensions. While working well in theory, these techniques face major difficulties in practice. In the conventional case of a monostatic radar, visibility of scattering centers varies with the target aspect angle due to fading. In this paper we examine that the visibility of scattering centers can be improved by incoherent addition of images from spatially distributed radars. The main focus lies in the description and results of a multistatic ISAR experiment carried out at Fraunhofer FHR. We display theoretically derived bistatic synchronization errors in a practical system and formulate additional multistatic synchronization requirements, necessary to add up the images.
    Źródło:
    International Journal of Electronics and Telecommunications; 2011, 57, 1; 15-22
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elementy rolnictwa precyzyjnego w ochronie roślin
    Elements of precision agriculture in plant protection
    Autorzy:
    Doruchowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/287162.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Inżynierii Rolniczej
    Tematy:
    rolnictwo precyzyjne
    DSS
    GPS
    identyfikacja obiektów
    analiza spektralna
    analiza obrazu
    ochrona roślin
    precision agriculture
    target identification
    spectral analysis
    image analysis
    plant protection
    Opis:
    Ochrona roślin prowadzona z wykorzystaniem instrumentów rolnictwa precyzyjnego jest tym elementem produkcji rolniczej, w którym nakłady inwestycyjne konieczne do korzystania z tych instrumentów mogą być najszybciej zbilansowane przez uzyskane korzyści. Wśród zagadnień rolnictwa precyzyjnego w ochronie roślin największe znaczenie mają systemy wspomagania decyzji (DSS) do prognozowania zagrożeń powodowanych przez agrofagi, systemy charakteryzacji, detekcji i identyfikacji obiektów służące do precyzyjnego określania celu zabiegów ochronnych oraz systemy nawigacji pomocne w sterowaniu pracą narzędzi wykonawczych realizujących precyzyjną aplikację środków ochrony roślin. Zaawansowane systemy pomiarowe i informatyczne stosowane w precyzyjnej ochronie roślin mogą być także wykorzystane do monitorowania procesów technologicznych w celu śledzeniu i odtwarzania poszczególnych etapów łańcucha produkcji.
    Precision agriculture is a method of intensification in agricultural production with respect to the principles of sustainable development. Plant protection with use of the instruments of precision agriculture is the element of agricultural production in which investments can be easily balanced by the obtained benefits. Among the issues of precision agriculture the most important ones are decision support systems (DSS) for prognosis of pest and disease incidences, characterization, detection and identification systems for precise determination of the spray target and navigation systems used to control the executive tools and devices for spray application. Advanced measuring and informatics systems used in precise plant protection can also be employed for traceability purposes in order to follow and control the each stage of production chain.
    Źródło:
    Inżynieria Rolnicza; 2005, R. 9, nr 6, 6; 131-139
    1429-7264
    Pojawia się w:
    Inżynieria Rolnicza
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The priority assignment for detected targets in multifunction radar
    Autorzy:
    Komorniczak, W.
    Kuczerski, T.
    Pietrasiński, J.F.
    Powiązania:
    https://bibliotekanauki.pl/articles/309112.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    multifunction radar
    target identification
    priority assignment
    resources management
    Opis:
    In a multifunction radar there is necessity to manage its very limited resources. This management should concern, among others, detected targets importance description. So information of those with lower priority will be refreshed more rarely. Presented paper describes system that assigns ranks for all detected objects in real time and then puts targets in order of priority. The system is based on structure of artificial neuron. Methods of neuron learning are discussed.
    Źródło:
    Journal of Telecommunications and Information Technology; 2001, 4; 30-32
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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