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EXPLORATION OF LASEM BATIK MOTIFS THROUGH A FITTING TOOL “ARBATULA” APPLICATION BASED ON AUGMENTED REALITY
No full textLasem batik is one of the prestigious cultural products of Rembang Regency, with distinctive motifs including
Sekar Jagad, Latohan, and Watu kricak. Lasem batik faces an existential crisis due to declining interest
among the younger generation in preserving it. Various efforts have been made, one of which is by
academics who have made Lasem batik a research topic by adapting digital technology as a representation
of the lives of the younger generation. The most basic preservation of Lasem batik can begin with the
introduction of motifs through fashion, in line with current trends. This became the basis for the author to
conduct exploratory research on Lasem batik motifs through the Fitting Tool application based on
Augmented Reality technology. Both have been applied in the fashion industry, but have never been applied
to Lasem batik motifs. This research uses a Research and Development method that is oriented towards
innovative product development and descriptive presentation. Data collection was conducted through
observation, interviews, and documentation at the Lasem Batik Cooperative, supported by a literature review
of journals and books on Lasem batik. The main result of this research is the "ARBatula" application
prototype, which simulates an Augmented Reality-based fitting tool to display Lasem batik motifs on 3D
fashion through markers with several features such as gender selection, motif selection, and mode selection.
The results of this research are expected to attract the attention of the younger generation in an effort to
preserve the existence of Lasem batik through a technological and fashion approach
RESEARCH ON SHAPE MEMORY PROPERTIES OF WOOL YARN AND WOOL KNITTED FABRIC AFTER DESCALING TREATMENT BY ULTRASONIC
No full textWool is one of the most widely used proteinic material for textile products due to its outstanding desirable properties including excellent thermal insulation, breathability, flame retardancy and comfort properties. Moreover, wool has shape memory capability, so it is good candidate for thermo-regulating clothes. However, wool fibers have a surface structure of overlapping cuticle cells known as scales which significantly affect fiber properties. This paper investigated the appearance, strength, extension and the shape memory behavior of the wool yarn and also the wool rib knitted fabric before and after descaling its cuticle cells using calcium carbonate nano powder (CCNP) powder with the concentration of 2 g/l, 5 g/l, and 10g/l in ultrasonic bath. The shape memory behavior of wool yarn, and rib knitted fabric were examined by changing between the warm-humid (temperature of 28°C; humidity of 90%) and the cold-dry condition (temperature of 8oC; humidity of 20%). The results showed that the increase of CCNP concentration improved the descaling effect, which resulted in less sharp morphology of scales on the wool fiber surface. Wool yarn breaking strength and elongation tended to increase due to the increase of CCNP concentration, while the value of CV (%) decreased. Moreover, the results demonstrated that the length of wool yarn did not change much for both original and treated yarns while descaled fabric possessed higher shape memory ability than untreated fabric, especially in vertical direction with 100 % of the original value, and the horizontal shape memory ability was in range of 93.8 % to 97.6 %
The effect of digital intensity on the financial performance of enterprises in Central and Eastern European countries
No full textThis study investigates the significance of information and communication technology (ICT) adoption, referred to as digital intensity (DI), and its impact on the financial performance of businesses in the manufacturing, utilities, and transportation sectors within Central and Eastern European (CEE) countries. The primary research question focuses on how DI and its components influence key financial indicators across these industries. This study uses data from the EUROSTAT, ENT2 (Comprehensive Enterprise Database), and EMIS (Emerging Markets Information Service) databases to examine financial and digital indicators for 2017–2022. The timeframe was selected to account for methodological changes in EUROSTAT and EMIS reporting. To explore these relationships, the study employs multiple factor analysis (MFA), which integrates interrelated variables from distinct blocks, including DI, profitability, indebtedness, and liquidity. Initially, separate principal component analyses (PCAs) were conducted on each variable block, followed by normalization. A global PCA was then performed on the balanced blocks to map variable relationships in a reduced-dimensional space. The MFA approach also facilitates the visualization of clusters and observations, offering insights into the diverse impacts of DI. The findings reveal that DI significantly affects financial metrics, such as profitability, indebtedness, and liquidity, with integration support systems playing a pivotal role in enhancing profitability and liquidity while mitigating debt. Furthermore, improvements in internet speed and accessibility are associated with enhanced financial performance. This empirical evidence underscores the potential of strategic investments in digital infrastructure and technology to enhance financial resilience and maintain competitive advantage in a digitalized economy. The study highlights a critical gap in the literature concerning the sector-specific effects of DI on financial performance in CEE industries and emphasizes the need for tailored digital strategies that account for the unique distribution channels and customer characteristics of each sector
Pokroky v koherentních technikách s více vlnovými délkami
No full textTato habilitační práce poskytuje komplexní přehled o výzkumu,
který jsem prováděl v Laboratoři optických měřicích metod (LOM)
na TUL a ve výzkumném centru TOPTEC. Zaměřuje se na pokrok
v oblasti koherentních technik, konkrétně interferometrie a digitální
holografie s využitím více vlnových délek. Vyvinuté techniky využívající více vlnových délek úspěšně řeší jeden ze základních problémů koherentních technik tzv. fázovou nejednoznačnost, která je
v mnoha aplikacích limitující.
Jednou z vyvinutých technik řešící problém fázové nejednoznačnosti
je absolutní interferometrie (AWA). Ta využívá tři laserové zdroje
a pokročilé algoritmy zpracování dat pro vysoce přesné absolutní
měření rozdílů optických drah mezi rameny interferometru. Metoda
AWA byla úspěšně použita v optickém průmyslu k měření různých
parametrů optických prvků. Techniky založené na interferometrii,
jako je například AWA, jsou účinné pro měření hladkých povrchů.
Měření hrubých povrchů vede k tvorbě koherenčního šumu, který
limituje použitelnost interferometrických technik. Proto byla dále
vyvinuta holografická metoda FSDH (Frequency Sweeping Digital Holography), která využívá více vlnových délek a optimalizované optické uspořádání pro minimalizaci vlivu koherentního šumu.
Pro měření dynamických jevů s vysokými gradienty byla vyvinuta
robustní interferometrie s využitím dvou vlnových délek (RTWI).
RTWI umožňuje měření s rozšířeným rozsahem jednoznačnosti fáze
při zachování přesnosti jedné vlnové délky. Tato metoda využívá
vysokorychlostní kameru s krátkou expoziční dobou. RTWI zaznamenává dvě vlnové délky v jediném interferogramu a zahrnuje
robustní metodu zpracování dat pro demodulaci fázové mapy.
RTWI byla úspěšně použita ke zkoumání transsonického proudění
v planárních lopatkových mřížích s rázovými vlnami v náročném
prostředí aerodynamické laboratoře.
Tato skupina koherentních metod využívajících více vlnových délek
představuje komplexní soubor technik s rozšířeným rozsahem fázové jednoznačnosti až do absolutního měření. Tyto techniky
jsou použitelné v širokém spektru aplikací, zahrnujících povrchy
s odraznými i difúzními vlastnostmi, pro statická i dynamická
měření.This habilitation thesis presents a comprehensive overview of the
research I have conducted at the Laboratory of Optical Measurement methods (LOM) at TUL and at the TOPTEC research center.
This thesis explores advancements in coherent techniques, specifically interferometry and digital holography using multiple wavelengths. The developed multi-wavelength techniques successfully
address one of the fundamental problems of coherent techniques,
the so-called phase ambiguity, which is the limit in many applications.
One of the techniques developed to solve the phase ambiguity problem is Absolute Wavelength Scanning Interferometry (AWA). AWA
uses three laser sources and advanced data processing algorithms to
provide highly accurate absolute measurements of the optical path
difference between the interferometer arms. AWA has been successfully used in the optical industry to measure various parameters of
optical elements. Interferometry-based techniques such as AWA are
effective for measuring smooth surfaces. However, the measurement
of rough surfaces results in the formation of speckles, which limits
the applicability of interferometry. Therefore, Frequency Sweeping
Digital Holography (FSDH) method has been developed. FSDH
uses multiple wavelengths and an optimized optical arrangement
to minimize the effect of the coherent noise. To address measurements of dynamic phenomena with high gradients, Robust twowavelength interferometry (RTWI) has been developed. RTWI allows measurements with an extended range of phase unambiguity
while maintaining single wavelength accuracy. This method uses
a high-speed camera with a short exposure time. RTWI records
two wavelengths in a single interferogram and includes a robust
data processing method to demodulate the phase map. RTWI has
been successfully used to investigate transonic flow in planar blade
cascades with shock waves in the challenging environment of an
aerodynamic laboratory.
This group of coherent multi-wavelength methods represents a comprehensive set of techniques with an extended range of phase unambiguity up to absolute measurements. These techniques are applicable in a wide range of applications, including surfaces with both
reflective and diffusive properties, for both static and dynamic measurements
Balancing urban growth and green solutions: Rooftop hydroponic farming in the Czech Republic
Full text linkThe logistics sector has become an integral component of the urban fabric, significantly influencing the gateway areas of cities. In Central Europe, the rapid expansion of warehouse infrastructure has been particularly notable, with the total net warehouse area reaching 59 million square meters in 2023. This development contributes to the formation of urban heat islands, which adversely impact the microclimate of nearby cities, exacerbating environmental challenges. The need for sustainable solutions to balance urban not only logistics growth with environmental preservation is increasingly urgent. This article explores the benefits and challenges of rooftop hydroponic farming through a case study conducted in July and August 2024 in the Czech Republic. The presented research is based on the students’ project “Lettuce on the roof” that integrates advanced hydroponic technology with the local rooftop environment and market conditions, contributing to sustainability, food security, and urban resilience. Key findings demonstrate that the hydroponic farm effectively reduced roof and surrounding temperatures, enhancing thermal regulation and building energy efficiency. The project achieved several months production of lettuce and herbs, with a short and efficient distribution chain ensuring fresh produce reached customers quickly. However, logistical complexities and the maintenance requirements of the selected concept present challenges, highlighting areas for improvement. These results underscore the potential of rooftop hydroponics as a viable urban agriculture solution, although future research should address operational scalability and optimization financial strategies for long-term sustainability
Advertisement in the FC Slovan Liberec club
No full textBakalářská práce se zabývá analýzou reklamní a marketingové činnosti ve fotbalovém klubu FC Slovan Liberec, přičemž zkoumá široké spektrum aktivit od tradičních forem až po moderní digitální strategie. Práce vychází z teoretického vymezení pojmů sportovního marketingu a reklamy, čímž vytváří pevný základ pro následnou analýzu. Ta se zaměřuje na konkrétní formy marketingové komunikace uplatňované v praxi. Důležitou součástí práce je rovněž srovnávací studie historických marketingových dat s aktuálními výsledky, která umožňuje identifikovat trendy a vyhodnotit efektivitu dlouhodobých strategií. V neposlední řadě práce vyhodnocuje ekonomický přínos reklamy pro klub. V závěrečné práci jsou popsány rozvojové směry, které by mohly podpořit růst klubu FC Slovan Liberec a její konkurenceschopnost v rámci České republiky.Bachelor's thesis analyzes the advertising and marketing activities within the football club FC Slovan Liberec, examining a broad spectrum of activities ranging from traditional forms to modern digital strategies. The work is grounded in a theoretical definition of the concepts of sports marketing and advertising, providing a solid foundation for the subsequent analysis. This analysis focuses on the specific forms of marketing communication applied in practice. An important part of the thesis also involves a comparative study of historical marketing data with current results, which allows for the identification of trends and the evaluation of the effectiveness of long-term strategies. Furthermore, the work evaluates the economic benefits of advertising for the club. The concluding section of the thesis describes potential development directions that could support the growth of FC Slovan Liberec and its competitiveness within the Czech Republic