Experimental Form Research Articles

The Effects of the Complexity of 3D Virtual Objects on Visual Working Memory Capacity in AR Interface for Mobile Phones

The current study aims to investigate the effects of 3D virtual object complexity on visual working memory capacity in mobile augmented reality (MAR) interfaces. With the popularity of augmented reality technology in mobile applications, 3D virtual elements play a key role in interaction. However, prior studies ignored the correlation between virtual object presentation and visual working memory (VWM). Given that visual working memory capacity is closely related to overall cognitive ability, the current study explored the relationship between the complexity of 3D virtual objects and VWM capacity in AR interfaces. Sixty volunteers participated in a 5-point Likert scale rating to eliminate the interference factors of familiarity, concreteness and similarity in 3D virtual material objects. Then, we further conducted an MAR change detection paradigm experiment and successfully manipulated the complexity of 3D virtual objects and the set size. Thirty-one subjects completed the formal experiment. Three measurements (reaction time, proportion correct, and Cowan’s K) were analyzed for nine experimental conditions (three object complexity levels and three object set sizes). The results confirmed that the visual working memory capacity in mobile AR interfaces is modulated by the complexity of the 3D virtual objects and set size, which decreases with the increase in complexity and set size of the displayed 3D virtual objects. As the complexity of the 3D virtual objects increases, the amount of resources allocated to each item decreases, resulting in a decrease in memory capacity and memory accuracy. This study highlights the effectiveness of VWM capacity in MAR interface design research and provides valuable insights into determining the best way to present 3D virtual objects.

Effects of cardamonin on the growth performance, intestinal barrier function and intestinal microbiota of Danzhou chickens under heat stress

The aim of this study was to investigate the effects of cardamonin (CDN) on the growth performance, intestinal mucosal barrier function and intestinal microbiota of Danzhou chickens under heat stress. A total of 200 one-day-old female Danzhou chickens were randomly divided into 5 groups. The daytime temperature of heat stress (HS) was set at 36 ± 2°C, and the nighttime temperature was kept the same as in the control (CON) group at 25 ± 2°C. The formal experiment lasted for 21 d. The CON and HS groups were fed a basal diet, whereas the L-CDN, M-CDN, and H-CDN groups received a basal diet supplemented with 50, 100, and 200 mg/kg CDN, respectively. Compared with the HS group, the CDN group presented a significantly greater average daily gain (ADG) (P < 0.001) but a significantly lower feed-to-gain ratio (F/G) (P = 0.007). CDN supplementation also increased the villus height (VH) and the ratio of the villus height to crypt depth (V/C) (P < 0.001) and reduced intestinal permeability by increasing expression of the ZO-1 (P < 0.001), Occludin (P < 0.001), and Claudin-1 (P = 0.034) proteins and decreasing the content of D-lactic acid (D-LA) and the activity of diamine oxidase (DAO) in serum (P < 0.001). Additionally, CDN reduced the levels of the intestinal mucosal inflammatory factors (IL-1β (P = 0.031), IL-6 (P = 0.003), and TNF-α (P = 0.014)) while upregulating IL-10 (P < 0.001). Furthermore, it increased the total antioxidant capacity (T-AOC) (P = 0.004) and catalase (CAT) activity (P < 0.001) and reduced the malondialdehyde (MDA) content (P = 0.017), effectively reducing intestinal oxidative stress and inflammatory reactions. Expression of the Nrf2 pathway-related proteins Nrf2 (P = 0.012), HO-1 (P = 0.008), and NQO1 (P = 0.003) was also increased by CDN. Moreover, feeding CDN increased the proportion of beneficial bacteria such as Firmicutes and Bacteroidetes but decreased the proportion of harmful bacteria such as Proteobacteria, thus protecting the intestinal barrier. In summary, 200 mg/kg CDN in the diet improved growth performance, enhanced intestinal barrier function and improved intestinal flora disorders in heat stress-induced Danzhou chickens, which may be related to the Nrf2/NQO1 signaling pathway.

Alterations of meat quality, lipid composition and flavor in breast meat of laying hens with fatty liver hemorrhagic syndrome

Fatty liver hemorrhagic syndrome (FLHS) has a high incidence rate in laying hens, and lots of FLHS-affected meat products enter the market every year. At the same time, the meat of laying hens is an important component of the human diet. However, the impact of FLHS on meat of laying hens is unknown, which could have a negative impact on consumers. To explore the effects of FLHS on chicken breast meat, a total of 36 twenty-five-wk-old Jingfen laying hens were used in the experiment. The hens were randomly divided into Control group and Model group, with 6 replicates per group and 3 hens per replicate. All chickens were raised in double-story step cages with individual pens. After a 3-wk acclimation period, the formal experiment began at 28 wk of age and lasted for 8 wk. Blood, liver, and breast meat samples were collected for the study of FLHS effects on breast meat. The impact of FLHS on meat quality was assessed by measuring indicators such as water-holding capacity and tenderness of the breast meat. Absolute quantitative lipidomics was employed to reveal the impact of FLHS on the lipid composition of chicken breast meat, and then validated by using RT-qPCR. Moreover, the volatilomics was utilized to detect changes in volatile organic compounds (VOCs) in chicken breast meat and to elucidate the resulting flavor changes. This research results showed that the meat quality of chicken breast meat decreased under FLHS, mainly manifested as reduced water holding capacity and decreased tenderness. The lipid content in the breast meat of FLHS-affected hens was significantly increased (P < 0.05). Among the affected lipids, 38 triglycerides exhibited notable elevation, possibly linked to heightened gene expression, such as lysophosphatidylcholine acyltransferase 3. The breast meat of laying hens with FLHS demonstrated an increased presence of VOCs, with 20 differential VOCs identified. Notably, 14 VOCs, particularly in 2-Undecenal, trans-Geranylacetone and ethyl nonanoate, exhibited substantial increases. These 3 VOCs had been identified as playing an important role in the formation of flavor in the breast meat of FLHS-affected laying hens. Correlation analysis suggested that the increase in these 3 VOCs might be related to the increase in lipid molecules such as phosphatidylethanolamine (38;3e) and acyl carnitine (10:3). In summary, FLHS reduced the breast meat quality of laying hens, altered its lipid profiles, and enhanced its flavor. These findings underscore the profound impact of FLHS on lipid and VOC profiles in chicken breast meat, offering valuable insights for chicken meat quality affected by FLHS.

Moderating Effects of Visual Order in Graphical Symbol Complexity: The Practical Implications for Design

In the field of visual graphic design, complexity plays a crucial role in visual information processing, and it is assumed to be an absolute quantity based on the number of the presenting features and components. However, it remains unclear whether the visual order of the constituent elements in graphical symbol complexity affects cognitive processing, especially memory processing. Our research innovatively generated four groups of novel, meaningless graphical symbols (complex and ordered, complex and disordered, simple and ordered, and simple and disordered) and experimentally manipulated the level of complexity and order in these stimuli. Before the formal experiment, a five-point scale was used to further rule out differences between objective and subjective definitions of these graphical symbols on ratings of complexity, order, concreteness, and familiarity. Then, we used a cue-recall task to compare subjects’ memory performance of those four graphical symbol groups. The analytical results showed a significant interaction between visual order and graphical symbol complexity, with the complexity effect appearing only when the stimuli were in disordered condition and disappearing once the stimuli were ordered. In addition, this study conducted a practical application validation to confirm that increasing the level of visual order is an effective way to improve user experience while maintaining the same level of complexity. The findings can serve as a reference for graphical symbol design, graphic design, and visual communication design.

Promoting long-acting reversible contraception among post-abortion clients with a provider-comparison intervention: a cluster randomized controlled trial in Nepal

BackgroundAlthough long-acting reversible contraception (LARC) is more effective and longer lasting than short-acting methods, uptake remains low among post-abortion clients. Using a stepped-wedge, cluster-randomized trial, we evaluate the impact of a provider-level peer-comparison intervention to encourage choice of LARC in Nepal among post-abortion clients.MethodsThe intervention used prominently displayed monthly posters comparing the health clinic’s previous month performance on LARC uptake against peer clinics. To understand how the intervention affected behavior, while ensuring voluntarism and informed choice, we used mystery client visits, in-depth provider interviews, and client exit survey data. The trial examined 17,680 post-abortion clients in 36 clinics in Nepal from July 2016 to January 2017. The primary outcome was the proportion of clients receiving LARCs. Statistical analysis used ordinary least squares (OLS) regression with ANCOVA estimation to assess the intervention’s impact on LARC uptake while controlling for client- and clinic-level characteristics.ResultsThe intervention increased LARC use among post-abortion clients by 6.6% points [95% CI: 0.85 to 12.3, p-value < 0.05], a 29.5% increase in LARC use compared to control clinics. This effect persisted after the formal experiment ended. Analysis of provider and client experiences showed that the behavioral intervention generated significant change in providers’ counseling practices, motivated the sharing of best practices. Quality of care indicators either remained stable or improved.ConclusionWe find that a provider-level behavioral intervention increases LARC uptake among post-abortion clients. This type of intervention represents a low-cost option to contribute to reducing unmet need for contraception through provider behavior change.

The impact of clock timing on VDT visual search performance under time constraint.

Conducting Visual Display Terminal (VDT) visual search tasks under time constraint has broad applications in fields such as security checks, medical diagnostics, and rescue operations. While excessive time pressure can impair performance, moderate time pressure can motivate individuals to complete tasks and increase productivity. Investigating the positive impact of time pressure on visual search tasks has become a crucial area of study. Clock timing plays a vital role in the visual interface, influencing the perception of time pressure and impacting visual search performance. However, existing research has paid little attention to the induction of time pressure and the impact of clock timing in VDT visual interfaces on visual search performance. Hence, the objective of this study is to investigate the impact of clock timing on VDT visual search performance under time constraint. The content of the experimental tasks was determined through a pilot experiment. The formal experiment was conducted in two phases over six sessions. Participants were tasked with locating the letter "E" embedded within the distractor letter "F," displayed with a clock area above the interface. The first phase of experiments included conditions of no clock, 4-min clock timing, and 4-min countdown clock timing. In the second phase of the experiment, the clock display method was a countdown clock, with three experiments conducted featuring long time, medium time, and short time. Search speed and accuracy were used as primary performance evaluation metrics to examine the impact of clock timing methods and duration on visual search performance. Twenty-one undergraduate students participated in the formal experiment. In the first phase of experiments, participants demonstrated significantly faster reaction times (RTs) in tasks where a clock display was present compared to tasks without (ANOVA, F(2, 60) = 4.588, P = 0.014). However, there were no significant differences in accuracy rates across different timing conditions (ANOVA, F(2, 60) = 0.146, P = 0.865), and no significant correlation between RTs and accuracy was found (Kendall's R = 0.11, P = 0.914). During the second phase, RTs decreased significantly as time constraints became more stringent (ANOVA, F(2, 60) = 7.564, P < 0.05). Conversely, accuracy rates decreased significantly under shorter time constraints (ANOVA, F(2, 60) = 4.315, P < 0.05), with a negative correlation observed between RTs and accuracy (Kendall's R = 0.220, P < 0.01). Compared to conditions without clock displays, having clock displays significantly improved the speed of the visual search task, although the difference in accuracy was not statistically significant. In the context of shorter clock countdown limits, Shorter timing constraints resulted in faster search speeds but also led to reduced accuracy and increased fatigue. Overall, a correlation exists between search speed and accuracy in visual tasks, where higher speed often correlates with lower accuracy. These findings provide valuable insights into clock timing design for visual search interfaces under time pressure.

Augusto Monterroso en la UNAM

This article is an investigation, based on the historical and labor archives of the Universidad Nacional Autónoma de México (unam), of Augusto Monterro-so’s professional career at that institution. Monterroso joined unam in the 1950s as a proofreader. This job gave him the economic stability to develop a literary work of great formal experimentation, that practiced with literary genres of little popularity and diffusion at the time (minifiction, short stories, essays). His literary capital and his friendship with key figures such as Rubén Bonifaz Nuño helped him to join the Facultad de Filosofía y Letras, as a professor of a writing workshop, and the Instituto de Investigaciones Filológicas, as a researcher. The University provided Monterroso with: 1- the necessary economic stability to keep his distance from literary fashions and follow an aesthetic of formal complexity; 2- an active relationship as editor and corrector of classical works and the Western canon, which were the foundation of his poetics, and 3- the tools of literary criticism necessary for the writing of a playful literary essay with marked intertextual features. Keywords:archives; formal experimentation; academy; biography; Mexican literature

The Speculative Anthology as a Formal Experiment in Futurity

This article theorises the ‘speculative anthology' as a formal experiment in futurity that challenges how anthologies have been used to publish, and promote, science fiction from the Global South in the international literary marketplace. It focuses on the ‘Futures Past' series of anthologies published by Comma Press – Iraq+100 (2016), Palestine+100 (2019), Kurdistan+100 (2021), and Egypt+100 (2024) – in which indigenous writers are asked to imagine regional futures one century after a major historical event that has defined the pasts and presents of these existing, or aspiring, nation states. Building on recent scholarship in postcolonial print culture which has proposed new strategies for reading evolving genres of the anthology, I first consider the speculative anthology as a heterogeneous literary form which has the capacity to facilitate creative collaboration and collective forms of critique. At the same time, I show how such anthologies reveal a homogenising impulse, often rooted in national imaginaries, and can encourage an anthropological approach to literary writing, especially by minoritised authors. Reading across the paratextual infrastructures of the ‘Futures Past’ series, I then compare how individual anthologies are shaped by various speculative editorial and publishing practices. I conclude that this experiment in futurity undertakes meaningful, yet imperfect, speculative work as it imagines how writing about the future by authors from the Global South might be anthologised otherwise.

Tangible Interaction Design in Music Intervention for Chinese Children with Developmental Dyslexia

With the development of children’s education, parents and teachers pay more and more attention to the learning and training of children with developmental dyslexia (DD). There are many reasons for DD and various intervention tools with a large number of learning costs. In this paper, we aim to analyze the relationship between music, pinyin, and reading, and confirm the theoretical link of "music - Chinese pinyin - reading ability". Then, we sort out a method to design the music intervention tool in this article, which is a new tangible interactive tool for children with DD. This tool is composed of hardware and software and has three modules: music intervention, pinyin intervention, and reading intervention, covering a total of 11 levels and is suitable for classroom teaching, home self-study, and other scenarios, to improve the Chinese pinyin and reading abilities. Subsequently, we conducted a pre-experiment and formal experiment on 20 children with DD to demonstrate the effectiveness of this tool, while using the SUS scale to analyze the evaluation of these children. Finally, we figured that the intervention tool designed in this study has a certain helpful effect on improving the phonetic and reading abilities of children with DD, and is more effective than the three intervention methods used alone. This study has certain reference significance for the designers of intervention tools and also provides new intervention methods for teachers in training institutions. It also provides another possibility for the self-treatment and training of children with developmental dyslexia.

Ergosterol peroxide inducing apoptosis of human hepatocellular carcinoma by regulating mitochondrial apoptosis pathway

This study aims to investigate the effect of ergosterol peroxide(EP) on the apoptosis of human hepatocellular carcinoma and its mechanism of action. The cell viability of HepG2 and SK-Hep-1 cells with 0(blank control), 2.5, 5, 10, 20, 40, and 80 μmol·L~(-1) of EP after 24, 48, and 72 h of action was detected by using CCK-8 assay, and the half inhibitory concentrations(IC_(50)) at 24, 48, and 72 h were calculated. Formal experiments were performed to detect the effect of EP on intracellular reactive oxygen species(ROS) using DCFH-DA staining, the effect of EP on intracellular mitochondrial membrane potential using JC-1 staining, the number of apoptotic cells using Annexin V-FITC/PI double-staining after HepG2 cells were co-cultured with 0(blank control), 10, 20, 40 μmol·L~(-1) EP for 48 h. The effects of EP at different concentrations on apoptotic morphology were detected using AO/EB staining. The effects of different concentrations of EP on the protein expression of mitochondrial apoptosis pathway-related proteins B cell lymphoma 2(Bcl-2), cytochrome C(Cyt-C), Bcl-2-related X protein(Bax), caspase-3, cleaved caspase-3, caspase-9, and cleaved caspase-9 were examined by using Western blot. The results showed that different concentrations of EP could inhibit the proliferation of hepatocellular carcinoma with concentration-and time-dependent trends. Compared with the blank control group, the ROS level in the EP-treated group increased significantly(P&lt;0.05). The mitochondrial membrane potential decreased significantly(P&lt;0.05). The total apoptosis rate increased significantly(P&lt;0.05). The expression of Bcl-2 protein was significantly down-regulated, and the expression of Cyt-C, Bax, cleaved caspase-9, and cleaved caspase-3 were significantly up-regulated(P&lt;0.05). In summary, EP may inhibit the proliferation of hepatocellular carcinoma by modulating the mitochondria-mediated apoptosis pathway and induce apoptosis.

Leah Sidi. Sarah Kane’s Theatre of Psychic Life: Theatre, Thought, and Mental Suffering

Leah Sidi presents a career-spanning reading of the plays of Sarah Kane, arguing that Kane built a sustained project of representing mental illness through formal stage experimentation. This volume is essential for those interested in Kane but will be of use to anyone exploring the stage as a site for representing mental illness.

Study on Soil Selenium-Induced Copper Deficiency in Yudong Black Goats.

Due to the degradation of pasture and strict restrictions on grazing ranges in recent years, copper (Cu) deficiency in Yudong black goats has been occurring, mainly manifested as emaciation, anemia, loss of appetite and lack of spirit. To explore the main causes of Cu deficiency in Yudong black goats, 40 black goats (1 year old, 25.11 ± 0.52 kg) were selected for this experiment; among them, 20 Yudong black goats with Cu deficiency from the experimental pasture were used as the experimental group, and 20 healthy Yudong black goats from the control pasture were used as the control group. In the pre-experiment, the mineral contents of the soil, forage, blood, and liver of black goats in both groups were determined, and in formal experiments, blood hematological, biochemical, antioxidant, and hemorheological parameters were analyzed. An experiment on the treatment of Cu deficiency in black goats was also conducted. This study showed that selenium (Se) levels in the soil, forage, blood, and liver from the experimental group were significantly lower than those from the control group (p < 0.01). The content of sulfur (S) in the forage was considerably higher than that of the control group (p < 0.01). The contents of Cu in the blood and liver from the experimental group were significantly lower than that from the control group (p < 0.01), and the content of S was considerably higher than that from the control group (p < 0.01). The blood hematology of the experimental group was affected, as evidenced by a decrease in hemoglobin, hematocrit value, mean corpuscular volume and mean corpuscular hemoglobin. The immunity and antioxidant capacity of black goats in the experiment group were impaired to varying degrees, with significant decreases in ceruloplasmin, immunoglobulin M, immunoglobulin G, glutathione peroxidase, and superoxide dismutase, and substantial increases in malondialdehyde. In addition, the experimental group showed a decrease in blood viscosity as evidenced by the rise in high shear viscosity, low shear viscosity, erythrocyte rigidity index, erythrocyte aggregation index, and erythrocyte deformation index, and a decrease in plasma viscosity. In the treatment experiment, oral administration of copper sulfate solution was carried out on 10 black goats with Cu deficiency. All the Cu deficiency goats were cured, and the Cu content in their bodies rebounded. In summary, low Se soil caused an increase in S content in the forage, and Yudong black goats feeding on high S forage resulted in a decrease in Cu absorption, which led to a secondary Cu deficiency.

Anthony Trollope's Formal Experiment: Repetition and the Anti-romantic Marriage Plot

Abstract In Miss Mackenzie, Anthony Trollope attempted to write a marriage plot without love or romance but admitted that he was unable to do so. This essay argues that Trollope's formal experiment developing the “anti-romantic” marriage plot did not end with Miss Mackenzie but continued across eighteen novels written from 1864 to 1876. The essay performs a midrange reading of this set of novels to argue that across this experiment Trollope iterates his anti-romantic marriage plot, replicating his central conflict and establishing three stock characters (moral maidens, hesitating heroines, and husband hunters). Trollope's experiment clashed against his own gender and class politics, forcing him to confront and reevaluate his own ideas and gradually empathize with women who choose to marry not for romance but for financial security. While Trollope's novels have, since their publication, been criticized as repetitious, the essay argues that his use of repetition is not a weakness but a strength, a formal tactic with unique affordances. This reframing offers a way to reconsider Trollope's literary technique and prodigious output as well as appreciate the impact that his experiment had on the trajectory of the Victorian realist novel. While the 1860s and 1870s are often considered the peak of Victorian high realism, Trollope's novels (and the influence they have on other major novelists) reveal how during these decades the marriage plot and realism itself was in crisis.

Daily feeding frequency affects feed intake and body weight management of growing layers

The objective of this study was to investigate the effect of feeding behavior on feed intake and body weight in growing layers and the underlying mechanisms, thereby providing a scientific foundation for optimal feeding practices in growing layers' management. A total of 144 Hy-line brown growing layers of 10 wk old and similar body weight, were divided into 3 treatment groups with different feeding frequency and equal cumulative daily feeding amount: the once-a-day feeding group (F1) was fed at 9:00 am every day, with feeding amount of 150 g/layer; the twice-a-day feeding group (F2) were fed at 9:00 am and 13:00 pm every day, with each feeding amount of 75 g/layer; the 4 times-a-day feeding group (F4) were fed at 9:00 am, 11:00 am, 13:00 pm, and 15:00 pm every day, with each feeding amount of 37.5 g/layer. Pre-experiment lasted for 1 wk and formal experiment lasted for 8 wk. The results indicated that the daily feed intake and body weight were decreased (P < 0.05) while feed conversion ratio was not affected (P > 0.05) as daily feeding times increased. The glandular stomach proportion was significantly increased in twice-a-day feeding group, while liver proportion and ileum length were significantly increased in 4 times-feeding group (P < 0.05). Additionally, 4 times-feeding daily resulted in a significant elevation of blood glucose levels, which may have suppressed feed intake (P < 0.05). In 4 times-feeding group, the plasma triglyceride levels increased as feeding times, accompanied by a notable up-regulation in the mRNA level of appetite-suppressing gene, hypothalamic pro-opiomelanocortin (POMC) and glandular stomach ghrelin. This modulation effectively suppressed the subsequent feed intake and body weight. Therefore, 4 times feeding daily is recommended in growing layers' management, because it reduced the feed cost without affecting the feed conversion efficiency.

Endogenous Security Formal Definition, Innovation Mechanisms, and Experiment Research in Industrial Internet

Endogenous Security Formal Definition, Innovation Mechanisms, and Experiment Research in Industrial Internet

Effects of different supplemental levels of protease DE200 on the production performance, egg quality, and cecum microflora of laying hens.

This study aimed to investigate the effects of different levels of the protease DE200 on the performance, egg quality, organ index, and cecum microflora of Hy-line W36 laying hens. In this experiment, a total of 180 laying hens aged 300 d were randomly divided into three treatment groups and fed diets containing 0, 100, or 200g/t DE200. The experimental period was 8wk, including 2wk of prefeeding and 6wk of the formal experiment. Regular feeding was performed thrice a day and eggs were collected twice daily, and the feed intake and the egg quality were recorded. The results showed that in terms of production performance, dietary supplementation with different levels of DE200 significantly increased egg production (EP; P < 0.05) and significantly decreased the feed conversion ratio (FCR; P < 0.05) and average daily feed intake (ADFI; P < 0.05) without affecting egg weight (EW). In addition, the addition of DE200 significantly reduced the egg breakage rate (P < 0.05) and tended to increase the Haugh unit and decrease the water content of the yolk (P > 0.05). In the cecal microflora, the addition of DE200 increased the proportions of Bacteroidetes and Firmicutes at the phylum level while reducing the proportion of Fusobacteria. Furthermore, at the genus level, the addition of DE200 increased the proportions of Bacteroides and Faecalibacterium and reduced the proportion of Megamonas. This study suggested that the protease DE200 can be used as a feed supplement to improve the production performance of laying hens.

The impact of non-stereotypical gender role endorsement in live broadcasting on consumers' purchase intention.

Non-stereotypical gender role endorsement is becoming more common in e-commerce live broadcasting. However, there is relatively little research on this topic, and the mechanism of its impact on purchase intention is not yet clear. Based on schema theory and experimental methods, this study explores the impact of non-stereotypical gender role endorsement (compared to stereotypical gender role endorsement) on purchase intention in e-commerce live broadcasting. Besides, we take traditional gender ideology as the moderating variable. We first selected experimental materials available for formal experiments through two pre-experiments. Secondly, this study conducted experiments on male/female product groups, respectively. Participants were recruited through the Credamo platform for both experiments. Experiment 1 indicates that for female product, stereotypical gender role endorsement triggers higher consumer purchase intention compared to non-stereotypical gender role endorsement. The subsequent moderating effect test results manifest that traditional gender ideology plays a moderating role in this effect. Experiment 2 shows that for male product, there is no significant difference in the impact of the two types of endorsement on consumers' purchase intention. In other words, non-stereotypical gender role endorsement does affect consumers' purchase intention, but this effect exists only in female product, and is more significant for consumers with a high level of traditional gender ideology. This study not only has certain theoretical significance for expanding the application boundaries of schema theory and congruence between celebrities and products endorsed, but also has practical significance for brand owners and streamers to effectively adopt non-stereotypical gender role endorsement to enhance purchase intention.

Московский концептуализм в монологе с авангардом

This article is the first to explore the relationship of Moscow conceptual artists with the creative and moral legacy of the Russian avant-garde of the 1910s-1920s. In the 1960s, the previous generation of Soviet non-official artists resonated with the avant-garde legacy upon getting acquainted with it and attempted to continue the tradition seen precisely as a formal experiment. Meanwhile, the Moscow conceptualist circle recognized Russian avantgarde as a conceptual source for the consequent ideologization of the entire reality and as a project of the violent transformation of life. And if social realism was a more obvious opponent for conceptualists, the forbidden art of the avant-garde became its own Other, alien in a very close and uncomfortable sense. The relations articulated in Moscow conceptualism over several decades were different and ambiguous; they developed and evolved as the legacy of the avant-garde became more familiar and as the socio-political and cultural context changed. In the 1970s, the conceptual art practice did not seek a ‘dialogue’ with the avant-garde, and the reflections of the older generation of Moscow conceptualists were marked with intention to dissociate themselves from the avant-garde and its aesthetic systems (the discussion of the political engagement of the avantgarde was pushed forward for later reflections, mainly into the 2010s). The 1980s brought liberalization into the study and exhibiting of the Russian avant-garde, and its admiration became a kind of duty that was taken ironically by the next generation of Moscow conceptual artists. To get international recognition, contemporary Russian art required to establish any affiliation (negative, if not positive) with the brand of the ‘Russian avant-garde’. The artistic practice of Ilya Kabakov has radically escalated the polemics with the avant-garde, which was subsequently projected onto the entire Moscow conceptualism. However, the exploration into the history of Moscow conceptualism as a response to the avant-garde project reveals heterogeneity of such a response, comprising individual halftones and historical dynamics.

Enhancing Fixation and Pursuit: Optimizing Field of View and Number of Targets for Selection Performance in Virtual Reality

Gaze interaction in virtual reality (VR) offers promising advantages in speed and hands-free operation. However, selecting a suitable selection mechanism in VR interfaces with different visual encodings remains a challenge. This research compares two visual input techniques and explores specific visual elements, including field of view (FOV), design style, and number of targets, with the goal of alleviating these problems. The pilot study identifies two search stages, and it also demonstrates a significant effect of FOV on search time. In the formal experiment, a gaze-based trigger experiment is employed to examine the selection performance of fixation and smooth pursuit. The results reveal that optimizing FOV and number of targets improves the triggering efficiency. Furthermore, fixation outperforms pursuit in terms of triggering time and accuracy under the same conditions, while cognitive load during triggering process remains relatively similar. These findings are expected to propose design recommendations to enhance fixation and pursuit within VR interfaces.

The Apophatic Theology and the Sacred in the Poetry of Dmitrij Prigov

The article considers the poetic production of Dmitrij Prigov, one of the most prominent representatives of Moscow Conceptualism, and focuses on the references that can be found in Prigov’s works to the apophatic or negative theology of Pseudo-Dionysius the Areopagite, one of the early Eastern Church Fathers. Through several examples, taken from cycles of poems from the 1970s and 1990s, the article investigates Prigov’s poetry through the lens of apophaticism and explores formal experimentations as well as stylistic strategies related to apophatic rhetoric. Theological, philosophical and sacral models are detached from their original context and used by the artist in a very unconventional way. Moreover, in the apophatic tradition Prigov discovers ideas that are fully applicable to his own understanding of poetry. The essay also discusses the relationship between art and religion in Prigov’s view and his idea of the sacred in art.