A fashion trend forecasting course as a gateway to career discovery

Testa Danielle Sponder,Fiore Ann Marie 한국마케팅과학회 2024 Journal of Global Fashion Marketing Vol.15 No.2

The purpose of this study was to present an overview of a newly designed fashion trend forecasting course and examine its success at increasing the student’s (a) trend forecasting acumen, (b) trend forecasting abilities in various roles within fashion, and (c) awareness of future career interests. A mixed methods approach enabled researchers to evaluate course success and methodological impacts. A repeated measures ANOVA and mean difference tests were utilized to test hypotheses. Qualitative data was analyzed to triangulate results. The study revealed significant increases in students’ trend forecasting abilities and comprehension of how trend forecasting is utilized in industry contexts. Originally, results did not indicate a significant increase in career preparedness, however triangulation revealed outliers within the participant set. The triangulated indicated that students focused on careers in merchandising, design, and product development saw a significant increase in their career preparedness. This is the first study to explore the connect between fashion trend forecasting and career preparation. While trend forecasting is a widely used skill in the fashion industry, the diverse use has been infrequently taught and has not been academically studied. The results demonstrate the opportunity to expand on the application of trend forecasting in fashion programs.

Pulse Counting Sensorless Detection of the Shaft Speed and Position of DC Motor Based Electromechanical Actuators

Testa, Antonio,De Caro, Salvatore,Scimone, Tommaso,Letor, Romeo The Korean Institute of Power Electronics 2014 JOURNAL OF POWER ELECTRONICS Vol.14 No.5

Some of DC actuators used in home automation, office automation, medical equipment and automotive systems require a position sensor. In low power applications, the introduction of such a transducer remarkably increases the whole system cost, which justifies the development of sensorless position estimation techniques. The well-known AC motor drive sensorless techniques exploiting the fundamental component of the back electromotive force cannot be used on DC motor drives. In addition, the sophisticated approaches based on current or voltage signal injection cannot be used. Therefore, an effective and inexpensive sensorless position estimation technique suitable for DC motors is presented in this paper. This technique exploits the periodic pulses of the armature current caused by commutation. It is based on a simple pulse counting algorithm, suitable for coping with the rather large variability of the pulse frequency and it leads to the realization of a sensorless position control system for low cost, medium performance systems, like those in the field of automotive applications.

Pulse Counting Sensorless Detection of the Shaft Speed and Position of DC Motor Based Electromechanical Actuators

Antonio Testa,Salvatore De Caro,Tommaso Scimone,Romeo Letor 전력전자학회 2014 JOURNAL OF POWER ELECTRONICS Vol.14 No.5

Some of DC actuators used in home automation, office automation, medical equipment and automotive systems require a position sensor. In low power applications, the introduction of such a transducer remarkably increases the whole system cost, which justifies the development of sensorless position estimation techniques. The well-known AC motor drive sensorless techniques exploiting the fundamental component of the back electromotive force cannot be used on DC motor drives. In addition, the sophisticated approaches based on current or voltage signal injection cannot be used. Therefore, an effective and inexpensive sensorless position estimation technique suitable for DC motors is presented in this paper. This technique exploits the periodic pulses of the armature current caused by commutation. It is based on a simple pulse counting algorithm, suitable for coping with the rather large variability of the pulse frequency and it leads to the realization of a sensorless position control system for low cost, medium performance systems, like those in the field of automotive applications.

지구 단위 계획을 위한 체계

Matteo Testa,Xu Xin,Seul gi Choi,Young hwan Pan 한국서비스디자인학회 2018 한국서비스디자인학회 학술대회자료집 Vol.2018 No.1

Metaverse and the fashion industry: A systematic literature review

Profumo Giorgia,Testa Ginevra,Viassone Milena,Youssef Kamel Ben 한국마케팅과학회 2024 Journal of Global Fashion Marketing Vol.15 No.1

The metaverse presents increasing potential for fashion companies. However, given its rapid evolution, a clear understanding of the role and scope of the metaverse and its implications for brands is lacking. Hence, this study presents a systematic literature review on the recent body of knowledge in the management and marketing fields on the role of the metaverse in the fashion industry. Accordingly, 34 articles published between 2009 and 2022 were analyzed. The results revealed that the literature is still in its infancy. The extant research is articulated into four clusters: (1) metaverse and consumer experience, (2) the marketing mix in the metaverse, (3) opportunities and challenges in the metaverse, and (4) the future of retail in the metaverse. Subsequently, we propose a research agenda based on the future strategies to be adopted by fashion companies, to advance the scholarly debate on these issues leveraging neglected research topics and emerging themes.

Independent dose verification system with Monte Carlo simulations using TOPAS for passive scattering proton therapy at the National Cancer Center in Korea

Shin, Wook-Geun,Testa, Mauro,Kim, Hak Soo,Jeong, Jong Hwi,Lee, Se Byeong,Kim, Yeon-Joo,Min, Chul Hee IOP 2017 Physics in medicine & biology Vol.62 No.19

<P>For the independent validation of treatment plans, we developed a fully automated Monte Carlo (MC)-based patient dose calculation system with the tool for particle simulation (TOPAS) and proton therapy machine installed at the National Cancer Center in Korea to enable routine and automatic dose recalculation for each patient. The proton beam nozzle was modeled with TOPAS to simulate the therapeutic beam, and MC commissioning was performed by comparing percent depth dose with the measurement. The beam set-up based on the prescribed beam range and modulation width was automated by modifying the vendor-specific method. The CT phantom was modeled based on the DICOM CT files with TOPAS-built-in function, and an in-house-developed C++ code directly imports the CT files for positioning the CT phantom, RT-plan file for simulating the treatment plan, and RT-structure file for applying the Hounsfield unit (HU) assignment, respectively. The developed system was validated by comparing the dose distributions with those calculated by the treatment planning system (TPS) for a lung phantom and two patient cases of abdomen and internal mammary node. The results of the beam commissioning were in good agreement of up to 0.8 mm<SUP>2</SUP> <img ALIGN='MIDDLE' ALT='${\rm g}^{-1}$ ' SRC='http://ej.iop.org/images/0031-9155/62/19/7598/pmbaa8663ieqn001.gif'/> for B8 option in both of the beam range and the modulation width of the spread-out Bragg peaks. The beam set-up technique can predict the range and modulation width with an accuracy of 0.06% and 0.51%, respectively, with respect to the prescribed range and modulation in arbitrary points of B5 option (128.3, 132.0, and 141.2 mm<SUP>2</SUP> <img ALIGN='MIDDLE' ALT='${\rm g}^{-1}$ ' SRC='http://ej.iop.org/images/0031-9155/62/19/7598/pmbaa8663ieqn002.gif'/> of range). The dose distributions showed higher than 99% passing rate for the 3D gamma index (3 mm distance to agreement and 3% dose difference) between the MC simulations and the clinical TPS in the target volume. However, in the normal tissues, less favorable agreements were obtained for the radiation treatment planning with the lung phantom and internal mammary node cases. The discrepancies might come from the limitations of the clinical TPS, which is the inaccurate dose calculation algorithm for the scattering effect, in the range compensator and inhomogeneous material. Moreover, the steep slope of the compensator, conversion of the HU values to the human phantom, and the dose calculation algorithm for the HU assignment also could be reasons of the discrepancies. The current study could be used for the independent dose validation of treatment plans including high inhomogeneities, the steep compensator, and riskiness such as lung, head & neck cases. According to the treatment policy, the dose discrepancies predicted with MC could be used for the acceptance decision of the original treatment plan.</P>

Features and Efficiency of Some Platinized TiO₂ Photocatalysts

Emilio, Carina A.,Testa, Juan J.,Hufschmidt, Dirk,Colo´n, Gerardo,Navio´, Jose´ A.,Bahnemann, Detlef W.,Litter, Marta I. 한국공업화학회 2004 Journal of Industrial and Engineering Chemistry Vol.10 No.1

Three commercial powdered photocatalysts, Degussa P25 (P25), Sachtleben Hombikat UVlOO (WlOO) and Millennium TiONA PC 50 (PC50) have been platinized to incorporate 0.5 and 1 wt.% Pt on the surface of the particles. The physicochemical properties (SBET, particle size, morphology of the particles, etc.) have been measured and compared among the samples. The photocatalytic efficiency has been tested with two environmentally important oligocarboxylic acids, EDTA and NTA (5 mM). No strong differences could be observed among the catalysts in the case of EDTA, and an inhibition was observed in all cases. A striking effect of platinization has been observed in the case of NTA degradation, with a change in the kinetics from zero order in the pure precursors to first order in the platinized samples. Pure and platinized HB samples were the best photocatalysts for NTA. An optimum Pt amount (0.5 wt.%) was observed for the photoefficiency of the samples. It can be concluded that the efficiency is more dependent on the nature of the substrate to be degraded than on the physicochemical properties of the samples

Effective dose evaluation of NORM-added consumer products using Monte Carlo simulations and the ICRP computational human phantoms

Lee, H.C.,Yoo, D.H.,Testa, M.,Shin, W.G.,Choi, H.J.,Ha, W.H.,Yoo, J.,Yoon, S.,Min, C.H. Pergamon Press 2016 Applied radiation and isotopes Vol.110 No.-

The aim of this study is to evaluate the potential hazard of naturally occurring radioactive material (NORM) added consumer products. Using the Monte Carlo method, the radioactive products were simulated with ICRP reference phantom and the organ doses were calculated with the usage scenario. Finally, the annual effective doses were evaluated as lower than the public dose limit of 1mSv y<SUP>-1</SUP> for 44 products. It was demonstrated that NORM-added consumer products could be quantitatively assessed for the safety regulation.

Forming Apparatus to Investigate the Effect of Temperature on the Superplastic Behaviour of Alloys

G. Giovinco,G. Giuliano,G. Testa 한국소성가공학회 2010 기타자료 Vol.2010 No.6

In this paper the authors show an experimental apparatus designed and made up to investigate the effect of temperature on the deformation of superplastic alloys up to 473K.The authors used the 3D finite volume software FLUENT ® to design the experimental apparatus. The numerical results have been employed for the system optimisation and metrological characterisation. The system was tested through bulge tests on a Pb-Sn alloy, showing its good versatility.

A Mouse Model for Conditional Secretion of Specific Single-Chain Antibodies Provides Genetic Evidence for Regulation of Cortical Plasticity by a Non-cell Autonomous Homeoprotein Transcription Factor

Bernard, Clé,mence,Vincent, Clé,mentine,Testa, Damien,Bertini, Eva,Ribot, Jé,rô,me,Di Nardo, Ariel A.,Volovitch, Michel,Prochiantz, Alain Public Library of Science 2016 PLoS genetics Vol.12 No.5

<▼1><P>During postnatal life the cerebral cortex passes through critical periods of plasticity allowing its physiological adaptation to the environment. In the visual cortex, critical period onset and closure are influenced by the non-cell autonomous activity of the Otx2 homeoprotein transcription factor, which regulates the maturation of parvalbumin-expressing inhibitory interneurons (PV cells). In adult mice, the maintenance of a non-plastic adult state requires continuous Otx2 import by PV cells. An important source of extra-cortical Otx2 is the choroid plexus, which secretes Otx2 into the cerebrospinal fluid. Otx2 secretion and internalization requires two small peptidic domains that are part of the DNA-binding domain. Thus, mutating these “transfer” sequences also modifies cell autonomous transcription, precluding this approach to obtain a cell autonomous-only mouse. Here, we develop a mouse model with inducible secretion of an anti-Otx2 single-chain antibody to trap Otx2 in the extracellular milieu. Postnatal secretion of this single-chain antibody by PV cells delays PV maturation and reduces plasticity gene expression. Induced adult expression of this single-chain antibody in cerebrospinal fluid decreases Otx2 internalization by PV cells, strongly induces plasticity gene expression and reopens physiological plasticity. We provide the first mammalian genetic evidence for a signaling mechanism involving intercellular transfer of a homeoprotein transcription factor. Our single-chain antibody mouse model is a valid strategy for extracellular neutralization that could be applied to other homeoproteins and signaling molecules within and beyond the nervous system.</P></▼1><▼2><P><B>Author Summary</B></P><P>Classically, cell signaling is based on the secretion of molecules that bind cell surface receptors. Lipophilic agents can do without cell-surface receptors due to their ability to diffuse through the plasma membrane, but this is normally not the case for proteins, which cannot pass the membrane barrier. However, homeoprotein transcription factors represent an exception as they are secreted and internalized by live cells owing to two peptidic domains. An important illustration of this novel signaling mechanism is provided by Otx2, a homeoprotein that travels from the choroid plexus to specific inhibitory neurons in the cerebral cortex, where it regulates physiological plasticity throughout life. Because the two transfer peptides are in the DNA-binding domain of Otx2, it is impossible to mutate them without altering both cell signaling and cell-autonomous functions. We have therefore developed a mouse in which a secreted anti-Otx2 single-chain antibody can be induced to trap extracellular Otx2 while leaving its cell autonomous function untouched. We show that neutralizing extracellular Otx2 modifies the expression of plasticity genes in the visual cortex, thus providing the first genetic demonstration for homeoprotein signaling in a mammal.</P></▼2>