Iskanje po katalogu digitalne knjižnice

Opis: The motivation of adult learners in the workplace is an area of research that focuses on understanding the factors that influence adults' desire to engage in learning activities within an organizational context. We studied various internal and external factors that contribute to the motivation of adult employees to acquire new knowledge, skills, and competencies to accelerate their professional development and career advancement. Understanding the motivations of adult learners at work is crucial for organizations that want to design effective learning programs. With other factors, such as intrinsic and extrinsic motivation, perceived relevance, and goal orientation, organizations can develop strategies that promote and sustain employee motivation. This can ultimately lead to improved engagement, performance, and professional growth among employees.
Ključne besede: motivation, adult education, adult learning, motivational factors, lifelong learning
Objavljeno v DKUM: 25.04.2025; Ogledov: 0; Prenosov: 0
Celotno besedilo (1,66 MB)

Opis: In this paper, a novel method for estimating high-resolution isotropic broadband albedo is proposed, by downscaling satellite-derived albedo using an optimization approach. At first, broadband albedo is calculated from the lower-resolution multispectral satellite image using standard narrow-to-broadband (NTB) conversion, where the surfaces are considered Lambertian with isotropic reflectance. The high-resolution true orthophoto for the same location is segmented with the deep learning-based Segment Anything Model (SAM), and the resulting segments are refined with a classified digital surface model (cDSM) to exclude small transient objects. Afterwards, the remaining segments are grouped using K-means clustering, by considering orthophoto-visible (VIS) and near-infrared (NIR) bands. These segments present surfaces with similar materials and underlying reflectance properties. Next, the Differential Evolution (DE) optimization algorithm is applied to approximate albedo values to these segments so that their spatial aggregate matches the coarse-resolution satellite albedo, by proposing two novel objective functions. Extensive experiments considering different DE parameters over an 0.75 km2 large urban area in Maribor, Slovenia, have been carried out, where Sentinel-2 Level-2A NTB-derived albedo was downscaled to 1 m spatial resolution. Looking at the performed spatiospectral analysis, the proposed method achieved absolute differences of 0.09 per VIS band and below 0.18 per NIR band, in comparison to lower-resolution NTB-derived albedo. Moreover, the proposed method achieved a root mean square error (RMSE) of 0.0179 and a mean absolute percentage error (MAPE) of 4.0299% against ground truth broadband albedo annotations of characteristic materials in the given urban area. The proposed method outperformed the Enhanced Super-Resolution Generative Adversarial Networks (ESRGANs), which achieved an RMSE of 0.0285 and an MAPE of 9.2778%, and the Blind Super-Resolution Generative Adversarial Network (BSRGAN), which achieved an RMSE of 0.0341 and an MAPE of 12.3104%.
Ključne besede: isotropic broadband albedo, high-resolution albedo, Sentinel-2 albedo, true orthophoto, anything model, differential evolution
Objavljeno v DKUM: 23.04.2025; Ogledov: 0; Prenosov: 0
Celotno besedilo (20,47 MB)

Opis: A search for double-heavy tetraquark state candidates Xccs¯s¯ decaying to Dþ s Dþ s and Dþ s Dþ s is presented for the first time using the data samples of 102 × 106 ϒð1SÞ and 158 × 106 ϒð2SÞ events, and the data samples at ffiffi ps ¼ 10.52, 10.58, and 10.867 GeV corresponding to integrated luminosities of 89.5, 711.0, and 121.4 fb−1, respectively, accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. The invariant-mass spectra of the Dþ s Dþ s and Dþ s Dþ s are studied to search for possible resonances. No significant signals are observed, and the 90% confidence level upper limits on the product branching fractions [Bðϒð1S; 2SÞ → Xccs¯s¯ þ anythingÞ × BðXccs¯s¯ → Dþ s Dþ s ðDþ s Dþ s ÞÞ] in ϒð1S; 2SÞ inclusive decays and the product values of Born cross section and branching fraction [σðeþe− → Xccs¯s¯ þ anythingÞ × BðXccs¯s¯ → Dþ s Dþ s ðDþ s Dþ s ÞÞ] in eþe− collisions at pffiffis ¼ 10.52, 10.58, and 10.867 GeV under different assumptions of Xccs¯s¯ masses and widths are obtained.
Ključne besede: tetraquark states, final states at Belle
Objavljeno v DKUM: 15.04.2025; Ogledov: 0; Prenosov: 3
Celotno besedilo (1,28 MB)
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Opis: Visokošolski učbenik "Strategije in pristopi večanja odpornosti in prožnosti oskrbovalnih verig" je celovit vodnik, namenjen podpiranju večanja odpornosti pri oskrbi in izboljšavam znotraj logstičnih procesov. Poudarek je na modernih pristopih in konceptih večanja odpornosti, strategijah za nabavo, distribucijo, oceni ergonomskega okolja in izobraževanju o soodvisnosti posameznih členov oskrbovalne verige s sočasnim povečevanjem dodane vrenosti in produktivnosti zaradi večje odpornosti in prilagodljivosti v logističnih podjetjih. Interdisciplinarni pristop združuje znanja iz več področij –management, logistika, distribucija, ergonomija, nabava in delo z ljudmi Bralci so opremljeni s praktičnimi znanji in veščinami za izboljšanje odpornosti in prilagodljivosti posameznih procesov. Učbenik pokriva teme, kot so: Strategije za oskrbovalno verigo in povečanje odpornosti; 2) Mestna logistika; 3) Večanje zavedanja o pomeni oskrbovalnih verig; 4) Strateški nabavi; 5) Pametni distribuciji in 6) Ergonomiji na delovnem mestu v logistiki. Celotna vsebina je usmerjena v krepitev kompetenc za odpornost, ki so ključne za zeleni in digitalni prehod logističnih podjetij in močnejše gospodarstvo EU temelječe na odpornih oskrbovalnih verigah.
Ključne besede: odporne oskrbovalne verige, prilagodljivost, interdisciplinarna znanja, zeleni in digitalni prehod, strateška nabava, mestna logistika, ergonomija
Objavljeno v DKUM: 11.04.2025; Ogledov: 0; Prenosov: 8
Celotno besedilo (6,31 MB)
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Opis: Since December 2019, the new SARS-CoV-2-related COVID-19 disease has caused a global pandemic and shut down the public life worldwide. Several proteins have emerged as potential therapeutic targets for drug development, and we sought out to review the commercially available and marketed SARS-CoV-2-targeted libraries ready for high-throughput virtual screening (HTVS). We evaluated the SARS-CoV-2-targeted, protease-inhibitor-focused and protein–protein-interactioninhibitor-focused libraries to gain a better understanding of how these libraries were designed. The most common were ligand- and structure-based approaches, along with various filtering steps, using molecular descriptors. Often, these methods were combined to obtain the final library. We recognized the abundance of targeted libraries offered and complimented by the inclusion of analytical data; however, serious concerns had to be raised. Namely, vendors lack the information on the library design and the references to the primary literature. Few references to active compounds were also provided when using the ligand-based design and usually only protein classes or a general panel of targets were listed, along with a general reference to the methods, such as molecular docking for the structure-based design. No receptor data, docking protocols or even references to the applied molecular docking software (or other HTVS software), and no pharmacophore or filter design details were given. No detailed functional group or chemical space analyses were reported, and no specific orientation of the libraries toward the design of covalent or noncovalent inhibitors could be observed. All libraries contained pan-assay interference compounds (PAINS), rapid elimination of swill compounds (REOS) and aggregators, as well as focused on the drug-like model, with the majority of compounds possessing their molecular mass around 500 g/mol. These facts do not bode well for the use of the reviewed libraries in drug design and lend themselves to commercial drug companies to focus on and improve.
Ključne besede: targeted libraries, focused libraries, computer-aided drug design, virtual screening, in silico drug design, high-throughput virtual screening
Objavljeno v DKUM: 09.04.2025; Ogledov: 0; Prenosov: 1
Celotno besedilo (6,53 MB)
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