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Florian Stahl,Maximilian Beichert,Sabrina Haas 글로벌지식마케팅경영학회 2018 Global Marketing Conference Vol.2018 No.07
Marketing becomes more and more data driven and hence enables machine learning to empower instruments to foster the interaction between firms and consumers to a new level of customization. Replacement and redirection of workforce through machine learning powered devices is not anymore a mere myth (Huang and Rust 2018). Adaption of machine learning has remained low in the recent years even though disposability was given. Nevertheless the acceptance and the implementation of machine learning based marketing efforts experience currently an exponential increase (Syam and Sharma 2018). In this article, the authors aim to develop a stronger understanding of machine learning in the context of marketing as well as to provide an overview about already established usage and implementation of machine learning in the interactions between firms and customers. To achieve this objective, the authors discuss and study machine learning in marketing from both the management and the consumer perspective. This is supported by survey data retrieved from managers out of varies industries as well as consumers, which reveal great variety in usage of machine learning not only among different marketing activities but also among industries. The authors examine the roots of machine learning in marketing and evaluate inferential state-of-the-art instruments. Predictions of what can and will evolve in the marketing context with the help of machine learning in the near future are also connected with concerns and safety issues related to the increasingly transparent consumer-firm-relationship. To conclude, the article the authors present a summary of state-of-the-art mechanisms in machine learning in marketing and propose a research agenda for upcoming research.
Advances in the Field of Thermal Procedures in Direct Combination with Thin-layer Chromatography
Egon Stahl 한국생약학회 1976 생약학회지 Vol.7 No.1
The hitherto existing gap in the field of chromatographic methods has been filled by the direct coupling of a suitable oven (TAS-oven) with TLC. The sample to be examined is heated either isothermally or linearly within the temperature gradient of 50∼450℃. The volatile and/or thermolytically evolved substances are fractionated on the TLC-layer and subsequently chromatographed under standard conditions. Transport mechanisms from the sample to the TLC-layer, applications of the TAS-procedure and further developments are discussed. Thermofractography, developed from the TAS-procedure, is demonstrated on different groups of natural substances such as alkaloids, amino acids, nucleic acids. nucleosides, nucleotides, triglycerides and other lipids, pyrone glycosides and aglycon. Experimental work and results on the thermolysis of macromolecular natural and synthetic substances, natural polyphenols, tanning agents and leather and the possibilities of differentiating various lignins, carbohydrate and synthetic polymers are reported. Further, it is shown that classical reactions in the microgram range, e.g. zinc dust distillation, sulphur-and selenium dehydrogenation and catalytic dehydrogenation, can be coupled directly with TLC. Also described is a method which allows to investigate the gaseous compounds evolved during thermofractography in the range of up to 450℃. Thermal procedures coupled with TLC open up the following new possibilities for chemical microanalysis: fractionated separation of distillable and sublimable components, fractionated thermolysis and carrying out of thermal reactions in the ultra micro range.
Xu, Wen,Stahl, Garth 서울대학교 교육연구소 2022 Asia Pacific Education Review Vol.23 No.3
The global forces shaping international education requires us to explore how transnational pre-service teachers navigate new and unfamiliar education contexts. Within studies of transnational pre-service teacher education, the voice of the Chinese diaspora remains largely on the periphery. This article aims to redress this paucity by applying Foucault’s fourfold ethical framework to demonstrate how one Chinese teacher’s reflexivity can contribute to the construction of an ‘ethical self’ in Australia. Data were drawn from a teacher-researcher’s journal entries and analytic memos documenting self-reflective practices in the course of both teaching and research. The article seeks to adumbrate the ways in which reflexivity—as an ongoing and dynamic process—can work as an intercultural space for developing professionalism and enhancing quality in practitioner research. This work is important if we are to re-imagine teacher education as part of a wider social justice agenda through respecting the experiences and voices of ‘others.’ Integral to the analysis is promoting the two-way flow of cultural knowledge, particularly those from the Asian diaspora whose voices are often denied in relation to the global dynamics of knowledge production.
Aghdas Heidari,Ralph Stahl,Habibollah Younesi,Alimorad Rashidi,Nicole Troeger,Ali Asghar Ghoreyshi 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4
The fast pyrolysis of eucalyptus wood was conducted in a continuous-feed fluidized bed reactor. The effect of pyrolysis temperature, nitrogen flow rate, biomass feed rate and biomass feed size was investigated. The results showed that with increasing nitrogen flow rate, the bio-oil yield firstly increased from 51.9% to 61.1% and then decreased to 59.9%. The maximum percentage of syringol and guaiacol were 16.27 and 8.98 at temperature of 450 and 600 ℃, respectively. The maximum bio-oil yield was 71.1%. The maximum percentage of CO was 44.1 at a flow rate 11.1 L/min, feed size 1.5 and feeding rate 1.7 g/min.
Microalgae Engineering Toolbox: Selectable and Screenable Markers
bashirkhawajamuhammadimran,김무상,Ulf Stahl,조만기 한국생물공학회 2016 Biotechnology and Bioprocess Engineering Vol.21 No.2
Engineering microalgae has opened a new era for plant biologists and biotechnologists. Microalgae had been proved as a promising candidate for the production of biopharmaceuticals, nutraceuticals, antioxidants, antimicrobial and antiviral compounds, in dyeing and food industry as well for biofuel production. Genetic transformation of some important microalgae has been successful, but several other potential microalgae species still need scientific attention. The success of the genetic transformation depends mainly on the utilization of the selectable and screenable markers. Like for other higher crop plants, several useful markers have been reported for microalgae transformation. In this follow-up, we compared different marker genes for genetic engineering of approximately all the industrially important microalgae. We have discussed the expression host, the targeted genome, appropriate selection agent, as well as the transformation method. Genetic transformation is an expensive and labor intensive process and this review will aid to shorten the time span by providing a database of appropriate markers for microalgae research which could serve as a guide for those involved in the genetic engineering of microalgae.