67 research outputs found

    Poland – the future Central Warehouse in Europe ?

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    Die Rekonfigurierung des Distributionsnetzes großer internationalen Produktions- und Handelsunternehmen hat die Verschiebung von Distributionszentren in Richtung Osten, darunter Polen, zur Folge. Darüber hinaus spielt Polen eine wichtige Rolle in den paneuropäischen Transportkorridoren. Das Ziel dieses Betrages ist es, den gegenwärtigen Stand bei der Entwicklung von Logistikimmobilien in Polen aufzuzeigen.The Rearranging of Distribution Networks of big international production and trade companies causes the relocating of distribution centers towards East Europe, including Poland. Furthermore, Poland plays an important role in the Pan-European transport corridors. This paper presents the current development of logistics facilities in Poland

    einFach Logistik. Teaching German for Logistics – sources of inspiration and new challenges for Polish Logisticians and Germanists

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    Driven by sociolinguistic inspirations, the authors make an attempt to assess the teaching of German logistics language in Poland for professional purposes against a broadly understood logistic education and emphasize the aspect of close correlation of the linguistic training outcome with the labor market demand. The intention of the authors is to highlight an important component of the education environment, namely the need to interrelate the proper content-oriented knowledge with linguistic skills of the logistic secondary school students and the university level students dealing with logistics.Driven by sociolinguistic inspirations, the authors make an attempt to assess the teaching of German logistics language in Poland for professional purposes against a broadly understood logistic education and emphasize the aspect of close correlation of the linguistic training outcome with the labor market demand. The intention of the authors is to highlight an important component of the education environment, namely the need to interrelate the proper content-oriented knowledge with linguistic skills of the logistic secondary school students and the university level students dealing with logistics

    Inventory – an innovative area of research and implementation of RFID technology

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    Since its inception, the Institute of Logistics and Warehousing in Poznan has focused its research potential issues related to logistics and storage in a broad sense. One of the most common processes in this area, which we can actually meet both in business environments and in every household, is inventory

    Thesaurus Logistik: Eine neue Dimension des Terminologiemanagements

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    The article aims to present the structure and key features of the internetbased bilingual(German and English) Thesaurus Logistics, developed by the Technical University of Applied Sciences Wildau in cooperation with the Institute of Shipping Economics and Logistics (ISL) and Institue of Logistics and Warehousing (ILiM). The comprehensive Thesaurus Logistics is based on the most advanced tools used for the developing of thesauri, namely: iQvoc and SKOS

    Unveiling the Potential of Probabilistic Embeddings in Self-Supervised Learning

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    In recent years, self-supervised learning has played a pivotal role in advancing machine learning by allowing models to acquire meaningful representations from unlabeled data. An intriguing research avenue involves developing self-supervised models within an information-theoretic framework, but many studies often deviate from the stochasticity assumptions made when deriving their objectives. To gain deeper insights into this issue, we propose to explicitly model the representation with stochastic embeddings and assess their effects on performance, information compression and potential for out-of-distribution detection. From an information-theoretic perspective, we seek to investigate the impact of probabilistic modeling on the information bottleneck, shedding light on a trade-off between compression and preservation of information in both representation and loss space. Emphasizing the importance of distinguishing between these two spaces, we demonstrate how constraining one can affect the other, potentially leading to performance degradation. Moreover, our findings suggest that introducing an additional bottleneck in the loss space can significantly enhance the ability to detect out-of-distribution examples, only leveraging either representation features or the variance of their underlying distribution.Comment: Under review by AISTATS 202

    A large-scale survey of genetic variation and genome evolution within the invasive Reynoutria complex : [streszczenie]

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    The taxa from the genus Reynoutria: R. japonica, R. sachalinensis, originating from Asia, and their hybrid R. ×bohemica are some of the most troublesome alien invasive species in Europe and North America, particularly dangerous to riparian ecosystems. Simultaneously, these taxa constitute a unique model system for the creation of hybrids and the initiation of evolutionary processes in an invaded range. The aim of the study was: (i) to examine the level of genetic diversity using Amplified Fragment Length Polymorphism (AFLP) markers in selected populations of three Reynoutria taxa from Poland, Hungary, Ukraine and Slovakia in comparison with Japan, (ii) to identify marked chromosomes in all taxa using fluorescence in situ hybridization (FISH) with rDNA sequences, and (iii) to establish genome size and ploidy level in the knotweed species using flow cytometry (FCM) (Fragment tekstu)

    Scheduling Problems with Learning and Ageing Effects: A Survey

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    In recent years, many papers concerning scheduling problems with simultaneous learning and ageing effects were published. In this paper, the state of the art of research concerning these problems is presented. In order to facilitate understanding this subject, the scheduling problems where these effects occur separately, are firstly explained. Then, the papers devoted to scheduling problems combining the effects of learning and ageing are discussed. Particular attention was paid on practical applications of the considered scheduling problems. After thorough analysis it turned out that both scheduling problems with learning effect, and with ageing effect, as well as, in particular, the problems with models merging learning and ageing effects do not have any reasonable real-life applications. This is because the learning and ageing effects are in general long time horizon phenomena observed in repetitive systems and scheduling theory concerns either with repetitive short-horizon planning problems or single long-horizon projects. Therefore, there is no sense to continue research considering these scheduling problems from practical (computer engineering, automatic control, technical and economical) point of view, unless such reasonable real-life example appears

    Cytogenetic and molecular genotyping in the allotetraploid Festuca pratensis × Lolium perenne hybrids

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    Background: Species of the Festuca and Lolium genera, as well as intergeneric Festuca × Lolium (Festulolium) hybrids, are valuable fodder and turf grasses for agricultural and amenity purposes worldwide. Festulolium hybrids can merge in their genomes agronomically important characteristics. However, in polyploid plants, especially in allopolyploids, the hybridization of divergent genomes could contribute to various abnormalities, such as variability in chromosome number, structural rearrangements, and/or disorders in inheritance patterns. Here we studied these issues in allotetraploid Festuca pratensis × Lolium perenne hybrids. Results: Cytogenetic procedures, including fluorescent in situ hybridization, genomic in situ hybridization, and molecular markers – inter-simple sequence repeats (ISSR) were exploited. This cytogenetic approach indicated the dynamics in the number and distribution of ribosomal RNA genes and structural rearrangements for both parental genomes (Festuca and Lolium) in hybrid karyotypes. The separate analysis of F. pratensis and L. perenne chromosomes in hybrid plants (F2-F3 generations of F. pratensis × L. perenne) revealed the asymmetrical level of rearrangements. Recognized structural changes were mainly located in the distal part of chromosome arms, and in chromosomes bearing ribosomal DNA, they were more frequently mapped in arms without this sequence. Based on the ISSR markers distribution, we found that the tetrasomic type of inheritance was characteristic for the majority of ISSR loci, but the disomic type was also observed. Nonetheless, no preference in the transmission of either Festuca or Lolium alleles to the following generations of allotetraploid F. pratensis × L. perenne hybrid was observed. Conclusion: Our study reports cytogenetic and molecular genotyping of the F. pratensis × L. perenne hybrid and its following F2-F3 progenies. The analysis of 137 allotetraploid F. pratensis × L. perenne hybrids revealed the higher level of recombination in chromosomes derived from F. pratensis genome. The results of ISSR markers indicated a mixed model of inheritance, which may be characteristic for these hybrids

    A Survey of Genetic Variation and Genome Evolution within the Invasive Fallopia Complex

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    The knotweed taxa Fallopia japonica, F. sachalinensis and their interspecific hybrid F. x bohemica are some of the most aggressive invaders in Europe and North America and they are serious threats to native biodiversity. At the same time, they constitute a unique model system for the creation of hybrids and studies of the initiation of evolutionary processes. In the presented study, we focused on (i) examining genetic diversity in selected populations of three Fallopia taxa in the invaded (Poland) and native ranges (Japan), (ii) establishing genome size and ploidy levels and (iii) identifying ribosomal DNA (rDNA)-bearing chromosomes in all of the taxa from the invaded range. We found that the genetic diversity within particular taxa was generally low regardless of their geographical origin. A higher level of clonality was observed for the Polish populations compared to the Japanese populations. Our study suggests that the co-occurrence of F. sachalinensis together with the other two taxa in the same stand may be the source of the higher genetic variation within the F. x bohemica hybrid. Some shift towards the contribution of F. japonica alleles was also observed for selected F. x bohemica individuals, which indicates the possibility of producing more advanced generations of F. x bohemica hybrids. All of the F. sachalinensis individuals were hexaploid (2n = 6x = 66; 2C = 6.01 pg), while those of F. japonica were mostly octoploid (2n = 8x = 88; 2C = 8.87 pg) and all of the F. x bohemica plants except one were hexaploid (2n = 6x = 66; 2C = 6.46 pg). Within the chromosome complement of F. japonica, F. sachalinensis and F. x bohemica, the physical mapping of the rDNA loci provided markers for 16, 13 and 10 chromosomes, respectively. In F. x bohemica, a loss of some of rDNA loci was observed, which indicates the occurrence of genome changes in the hybrid

    Improved procedures of Sc(OH)3 precipitation and UTEVA extraction for 44Sc separation

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    BACKGROUND: 44Sc is becoming attractive as a PET radionuclide due to its decay characteristics. It can be produced from 44Ca present in natural calcium with 2.08% abundance. MATERIALS AND METHODS: The targets were mostly prepared from natural CaCO3 or metallic calcium in the form of pellets. After irradiation they were dissolved in 3 M hydrochloric acid and 44Sc was separated from excess of calcium by precipitation of scandium hydroxide using ammonia. Alternatively, targets were dissolved in 11 M hydrochloric acid and 44Sc was separated by extraction chromatography on UTEVA resin. As the next step, in both processes 44Sc was further purified on a cation exchange resin. Initially, the separation procedures were developed with 46Sc as a tracer. Gamma spectrometry with a high purity germanium detector was used to determine the separation efficiency. Finally, the CaCO3 pellet with 99.2% enrichment in 44Ca was activated with protons via 44Ca(p,n)44Sc nuclear reaction. RESULTS: Altogether twenty two irradiations and separations were performed. The working procedures were developed and the quality of separated 44Sc solution was confirmed by radiolabeling of DOTATATE. The chemical purity of the product was sufficient for preclinical experiments. At the end of around 1 hour proton beam irradiation of CaCO3 pellet with 99.2% enrichment in 44Ca the obtained radioactivity of 44Sc was more than 4.8 GBq. CONCLUSION: 44Sc can be produced inexpensively with adequate yields and radionuclidic purity via 44Ca(p,n)44Sc nuclear reaction in small cyclotrons. The recovery yield in both investigated separation methods was comparable and amounted above 90%. The obtained 44Sc was pure in terms of radionuclide and chemical purity, as shown by the results of peptide radiolabeling
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