scholarly journals Evaluation of the potential of commercial use of microalgae in the world and in Ukraine

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lesia Pavliukh ◽  
Sergii Shamanskyi ◽  
Sergii Boichenko ◽  
Artur Jaworski
Keyword(s):  
Experimental Study ◽  
Wastewater Treatment ◽  
Experimental Studies ◽  
Biofuel Production ◽  
Phosphorus Compounds ◽  
Commercial Application ◽  
Biogenic Elements ◽  
Content Type ◽  
Commercial Use ◽  
The Impact

Purpose This paper aims to evaluate of the microalgae potential for commercial application, in particular to conduct experimental study of biogenic compounds removal from sewage waters by microalgae, and to calculate economical benefits from biofertizers and biofuel production. Design/methodology/approach Experimental study in the concentration change of nitrogen and phosphorus compounds in the cultivation of Chlorella Vulgaris microalgae in various types of sewage water was carried out. Findings The efficiency wastewater treatment by microalgae was confirmed. The economic benefit from the biomass utilization as biofuel production was calculated. Practical implications Implementation of wastewater treatment technology with biomass recycling for biofuel and biofertilizers production will minimize the impact on the environment. Originality/value As a results of experimental studies, the ability of microalgae to reduce biogenic elements in wastewater was confirmed. Microalgae can be used both for wastewater treatment to biogenic elements removal, such as phosphorous and nitrogen compounds, and biofuel, biofertilizers production. Prospects of the commercial use of microalgae are obvious. They are specially adapted to an environment dominated by viscous forces.

scholarly journals WASTEWATER TREATMENT WITH BIOCONVERSION FOR MOTOR FUEL PRODUCTION

ScienceRise ◽  
2020 ◽  
pp. 66-72
Author(s):  
Sergii Shamanskyi ◽  
Sergii Boichenko ◽  
Lesia Pavliukh
Keyword(s):  
Wastewater Treatment ◽  
Culture Medium ◽  
Motor Fuel ◽  
Biofuel Production ◽  
Phosphorus Compounds ◽  
Biogenic Elements ◽  
Fuel Production ◽  
Nitrogen And Phosphorus ◽  
Phosphorous Compounds ◽  
Technological Product

The object of research: the process of wastewater treatment using bioconversion for subsequent motor fuel production. Investigated problem: improving the efficiency of bioconversion process for biofuel production with simultaneous wastewater treatment by removing nitrogen and phosphorous compounds. The main scientific results: providing the possibility of biofuel production with energy and economic inefficiency. It is done by combining the process of motor biofuel production with the process of treating wastewater from biogenic elements makes it perspective for commercial use. Traditional technology for the production of motor biofuels from microalgae includes cultivation, harvesting, dehydration and drying of biomass, extraction of oils from them and subsequent production of methyl esters and glycerol. Such technology is often not economically effective. It requires significant amount of energy for carrying out all necessary processes. In addition, it requires significant expenditures of water and nutrients. The use of nutrient-rich wastewater as a culture medium for the cultivation of microalgae allows not only to reduce costs, but also to purify wastewater from nitrogen and phosphorus compounds, which makes this process economically effective. The area of practical use of the research results: Sewage and gray water treatment plants. Industrial and agricultural effluents treatment plants. Different types of enterprises, which have wastewater enriched with nitrogen and phosphorous compounds. Innovative technological product: The technology of microalgae cultivation using wastewater as a culture medium. The technology allows effectively purifying used wastewaters from nitrogen and phosphorous compounds with no waste at the end. Scope of the innovative technological product: Improved technology of motor biofuel production with simultaneous wastewater purification, which is economically effective and environmentally safe.

scholarly journals Experimental Study of the Chaotic Jerk Circuit Application for Chaos Shift Keying

2021 ◽  
Vol 58 (4) ◽  
pp. 55-68
Author(s):  
F. Capligins ◽  
A. Litvinenko ◽  
A. Aboltins ◽  
E. Austrums ◽  
A. Rusins ◽  
...  
Keyword(s):  
Experimental Study ◽  
Voltage Drop ◽  
Experimental Studies ◽  
Chaotic Synchronization ◽  
Channel Noise ◽  
Error Feedback ◽  
Shift Keying ◽  
The Stability ◽  
Chaos Shift Keying ◽  
The Impact

Abstract The paper presents a study of the chaotic jerk circuit (CJC) employment capabilities for digital communications. The concept of coherent chaos shift keying (CSK) communication system with controlled error feedback chaotic synchronization is proposed for a specific CJC in two modifications. The stability of chaotic synchronization between the two CJCs was evaluated in terms of voltage drop at the input of the slave circuit and the impact of channel noise using simulations and experimental studies.

scholarly journals The Impact of Gamified Instruction on Students’ Learning Outcomes: Systematic Review of Experimental Studies

2021 ◽  
Vol 13 (4) ◽  
pp. 55
Author(s):  
Nevena Jaftha ◽  
Marouska Zahra-Micallef ◽  
Tatjana Chircop
Keyword(s):  
Systematic Review ◽  
Learning Outcomes ◽  
Digital Libraries ◽  
Experimental Studies ◽  
Intervention Design ◽  
Assessment Instruments ◽  
Learning Technology ◽  
Content Type ◽  
Replication Studies ◽  
The Impact

This systematic review critically explores the intervention design and findings of the experimental studies that were published between January 2012-December 2020 in a number of digital libraries and databases and had the effect of a gamified instruction on students’ learning outcomes in their focus, with the aim of identifying what constitutes success or the lack thereof in the given context. The found effect(s) of gamified instruction on students’ learning engagement and achievement are discussed in relation to the a) intervention design, its flaws and their potential impact on reported outcomes and b) prevalent practice in gamification research. The discussion is structured around data collection sources, sample size, and intervention duration, but also the characteristics of learning technology, learning approach, course content, type of games and game elements. This study proposes a list of categories to be included in the description of a study context so that it is possible to a) systematically organise research findings, b) filter the variety of findings via means of replication studies. c) recognise the variant effect on different sub-populations, and d) suggest the way forward when designing and implementing gamified instruction within specific conditions. Furthermore, the study highlights the necessity of approaching the topic through a mixed-method approach involving a more intensive tracking schedule with new assessment instruments and a larger number of participants that are longitudinal or at least of a longer duration in order to obtain more comprehensive findings.

scholarly journals An Experimental Study to Evaluate the Impact of the Programming Paradigm in the Testing Activity

2012 ◽  
Vol 15 (1) ◽  
Author(s):  
Simone de Rocio Senger de Souza ◽  
Marllos Paiva Prado ◽  
Ellen Francine Barbosa ◽  
José Carlos Maldonado
Keyword(s):  
Experimental Study ◽  
Experimental Studies ◽  
Programming Paradigm ◽  
Time Restrictions ◽  
Activity Cost ◽  
The Cost ◽  
Programming Paradigms ◽  
The Impact ◽  
Initial Results ◽  
Testing Criteria

Several techniques and criteria are available to help conducting testing activity. The choice for one of them depends on different aspects, such as the time restrictions, ef- fectiveness of the testing criteria or the features of the program under test. In this context, the programming paradigm might influence in the testing activity cost. This paper presents the results of an experimental study to characterize and evaluate the cost and strength of structural and functional testing criteria, comparing object-oriented and procedural programming paradigms. A set of 32 programs from the data structure do- main was considered in this study. The main goals in the execution of this research were: i) to obtain initial results about the investigated questions; ii) to generate artifacts which can be used as basis to define and conduct further experimental studies; iii) to support training and teaching of software testing activity.

Shopping online? The role of imagination and gender

2019 ◽  
Vol 53 (12) ◽  
pp. 2604-2628 ◽  
Author(s):  
Manveer K. Mann ◽  
Yuping Liu-Thompkins
Keyword(s):  
Purchase Intention ◽  
Negative Impact ◽  
Experimental Studies ◽  
Product Evaluation ◽  
Brand Experience ◽  
Content Type ◽  
Female Consumers ◽  
Product Use ◽  
Negative Effect ◽  
The Impact

Purpose This study aims to examine gender differences in the impact of imagining product use on purchase decisions. The authors argue that while imagination can enhance purchase intention for female consumers, it can be detrimental to male consumers. This study explores the conditions under which imagination can be turned into a positive device for male consumers. Design/methodology/approach Three experimental studies were conducted. The first two studies illustrate the differential effects of imagination on males vs females. Given the negative effect found among males, the third study focused exclusively on male consumers to identify conditions under which the negative impact of imagination on these consumers can be alleviated. Findings Studies 1 and 2 show that while an imagination tactic has positive or no effect on female consumers, a generic imagination request lowers male consumers’ purchase intention. Focusing on potential ways of alleviating this negative effect, Study 3 shows that for males without prior brand ownership experience, imagining product use in a less-typical context can increase purchase intention. Research limitations/implications The results provide evidence that gender impacts the effectiveness of imagination in improving product evaluation. Furthermore, the context of imagination and previous brand experience can be used together to determine how male consumers respond to imagination. Practical implications The study’s findings warn against the blind use of imagination tactics. Instead, retailers need to customize imagination tactics based on gender, previous brand experience and product usage context. Originality/value To the best of the authors’ knowledge, this is one of the first papers to examine the impact of gender on the influence of imagination on product evaluation.

The role of implicit learning in logo substitution

2019 ◽  
Vol 36 (5) ◽  
pp. 610-619 ◽  
Author(s):  
Rafal Ohme ◽  
Christo Boshoff
Keyword(s):  
Implicit Learning ◽  
Experimental Studies ◽  
Target Market ◽  
Human Beings ◽  
Content Type ◽  
Quasi Experimental ◽  
Low Levels ◽  
The Impact ◽  
A Company

Purpose Some marketers have challenged psychologists’ contention that human beings can only learn by using conscious effort. They argue that advertising can be effective at low levels of (or even no) attention. Also, despite the absence of (or low levels of) consciousness, these subconscious responses can be linked to brands. The purpose of this study is to investigate the impact of implicit learning in the context of logo substitution – an image that may not look like the original logo, and may not even be consciously associated with the original brand or its logo. Design/methodology/approach Data were collected by means of two quasi-experimental studies. Findings The results suggest that, thanks to implicit learning, logo substitution can be effective. Research limitations/implications One limitation was that data were collected from two relatively small convenience samples. Practical implications Logo substitution can be of value when a company faces a situation when advertising is banned or restricted, when the target market is saturated with marketing stimuli (clutter) and when there is a risk that aggressive advertising can lead to psychological reactance. The purpose of logo substitution would then be to unobtrusively activate mental representations closely related to the original logo. Originality/value The central contribution of this study is that it demonstrates how the principles of implicit social cognition, implicit learning and logo substitution can be used by marketers to overcome the undesirable and even adverse advertising circumstances they sometimes face.

Can advertising creativity affect product perceptions and retailer evaluations?

2014 ◽  
Vol 23 (6) ◽  
pp. 452-461 ◽  
Author(s):  
Erik Modig ◽  
Sara Rosengren
Keyword(s):  
Product Quality ◽  
Mineral Water ◽  
Experimental Studies ◽  
Purchase Intentions ◽  
Brand Attitude ◽  
Chewing Gum ◽  
Content Type ◽  
Positive Effects ◽  
Perceived Product Quality ◽  
The Impact

Purpose – This paper aims to investigate the impact of advertising creativity on consumer perceptions of product quality, value, retailer brand attitude and purchase intention. Design/methodology/approach – Two experimental studies were conducted. Study 1 shows the impact of creativity (high/low) for two product categories (mineral water and chewing gum) and one known retailer. The findings are replicated and extended in Study 2 for four categories (mineral water, chewing gum, batteries and detergent) and two known retailers. Findings – The results show that advertising creativity positively signals perceived product quality, which increases perceived value. These effects fully mediate a positive impact on retailer brand attitude and purchase intentions. The positive effect of advertising creativity on perceived product quality is mediated by perceived advertisement effort. Practical implications – This study introduces advertising creativity as a way for retailers to increase perceived product quality and value. The results show that advertising creativity increases perceived effort on behalf of the sender, which positively influences purchase intentions. Originality/value – The current study shows that advertising creativity can work as a signal of product quality, which has positive effects for retailers.

I am ugly, but I am tender: the dominance of moral character and warmth

2018 ◽  
Vol 8 (2) ◽  
pp. 153-176
Author(s):  
Joseph W. Chang
Keyword(s):  
Experimental Studies ◽  
Moral Character ◽  
Negative Influence ◽  
Thinking Styles ◽  
Future Research ◽  
Moral Intuitions ◽  
Content Type ◽  
Brand Evaluations ◽  
Culture Characteristics ◽  
The Impact

Purpose The purpose of this paper is to investigate the dominance of athlete endorser characteristics (i.e. moral character vs warmth) on athlete endorser perception and the influence of tarnished athlete endorsers (i.e. immoral character vs coldness) on brand evaluations from the perspectives of perceiver characteristics, including dispositional tendency, innate moral intuitions, and self-location (SL). Design/methodology/approach This research consists of three experimental studies with 135, 72, and 91 participants, respectively. Study 1 compared the dominance of moral character and warmth on athlete endorser perception. Study 2 examined the impact of perceiver characteristics on the cause-and-effect relationship between tarnished athlete endorsers (i.e. immoral character vs coldness) and brand evaluations. Study 3 investigated the cross-cultural generalizability of the US-based research findings in Study 2 for Indians. Findings Moral character is more influential than warmth on athlete endorser evaluations. Tarnished athlete endorsers with immoral character exert more negative influence than tarnished athlete endorsers with coldness characteristic on brand evaluations. Except for dispositional tendency, innate moral intuitions and SL moderate brand evaluations. Endorser and perceiver characteristics yield asymmetric patterns of influence on Americans’ and Indians’ brand evaluations. Research limitations/implications Future research is needed to verify the causal effects of thinking styles on the relationship between tarnished athlete endorsers and brand evaluations. Practical implications The determination of endorsement continuity has to jointly consider the characteristics of endorsers, perceivers, and cultures. Originality/value This research contributes to the endorsement research by advancing the research scopes of athlete endorser, perceiver, and culture characteristics.

scholarly journals An empirical assessment of factors affecting the brand-building effectiveness of sponsorship

2014 ◽  
Vol 4 (1) ◽  
pp. 6-25 ◽  
Author(s):  
Leah Donlan
Keyword(s):  
Brand Equity ◽  
Survey Methodology ◽  
Contextual Factors ◽  
Experimental Studies ◽  
Measurement Tool ◽  
Sporting Events ◽  
Content Type ◽  
Factors Affecting ◽  
Brand Building ◽  
The Impact

Purpose – The purpose of this study is to assess, in two different live sponsorship environments, the contribution of sponsorship to consumer-based brand equity. Design/methodology/approach – The study adopts a quantitative survey methodology, employing self-administered questionnaires at two UK sporting events (athletics and cricket). To isolate the impact of sponsorship, questionnaires were also distributed to comparison sample groups not exposed to the sponsorship activities. The elements of consumer-based brand equity are operationalized in line with Aaker's (1996) brand equity measurement tool. Findings – Sponsorship can be an appropriate vehicle through which to build consumer-based brand equity; however brand-building success is not guaranteed and is subject to a range of factors impacting upon particular sponsorships, including strength of the sponsor-event link, leverage activities and clutter. The most successful sponsorship displayed marked contributions to building brand associations, perceived quality and brand loyalty. However, the presence of sponsorship clutter in particular was found to impact negatively upon the perception of quality transferred to a brand through sponsorship. Research limitations/implications – The use of live event settings limits the ability to tightly control all variables; therefore replication of this study using experimental methodologies is recommended. Nonetheless, findings indicate managers should consider the above mentioned contextual factors when selecting sponsorships in order to maximize sponsorship success. Originality/value – This study explores the contribution of sports sponsorship to consumer-based brand equity in live sponsorship settings, addressing concerns over the generalizability of previous experimental studies. Equally, this study compares the brand equity-building effectiveness of sponsorship for two sponsors, which differ on a range of contextual factors that impact upon sponsorship success.

Visual storytelling on Instagram: branded photo narrative and the role of telepresence

2020 ◽  
Vol 14 (1) ◽  
pp. 33-50 ◽  
Author(s):  
Heejin Lim ◽  
Michelle Childs
Keyword(s):  
Social Media ◽  
Experimental Studies ◽  
Media Communication ◽  
Visual Storytelling ◽  
Content Type ◽  
Narrative Transportation ◽  
Implied Motion ◽  
Social Media Communication ◽  
The Impact

Purpose The new focus of brand communication in social media has driven firms to develop the effective visual content strategy. In light of narrative transportation theory, this study aims to investigate the impact of a photo’s narrative elements on self-brand connection through viewers’ transportation and emotional responses. Additionally, this study tests the role of telepresence on Instagram in this psychological mechanism. Design/methodology/approach Using between-subjects experimental design, two experimental studies test the effect of implied movement (Study 1) and diverse narrative elements such as a character, implied motion for chronology and the relevant background (Study 2). Findings Results demonstrate that a single narrative element, i.e. implied motion, does not induce a viewer’s transportation to the presented image. Rather, the viewer’s transportation occurs as a function of complex and diverse narrative elements, such as implied motion and the background as a context. Practical implications Findings suggest that the concept of photo narrative should be taken into consideration in a visually-oriented social media environment. To increase self-brand connection, social media communication should be designed with diverse elements to promote viewers’ active simulation and create meaning to the branded photo story. Originality/value This study expands the theory of narrative transportation by applying it to a visual form. Additionally, this research investigates the effect of social media communication on self-brand connection; the findings of this study demonstrate that a major goal of social media communication is not to sell products but to strengthen consumer-brand relationships through branded storytelling.

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