Push Effect Research Articles

Night-time light-traps and push–pull integrated system enhanced the control of different life stages of fall armyworm, Spodoptera frugiperda, (Lepidoptera: Noctuidae)

BackgroundMaize, Zea mays L (Cyperales: Poaceae), is one of the major cereal crops grown in Ethiopia for its food and feed values. Recently, the fall armyworm (FAW) (Spodoptera frugiperda) has become a major challenge of maize production threatening smallholder farmers in the country. Developing effective and smallholder farmers-friendly integrated pest management for FAW is vital. Therefore, a study was conducted to evaluate the effect of night-time light-traps and push–pull integrated system on controlling different life stages (adult, larvae and eggs) of FAW.MethodsThe study was conducted in Northern Ethiopia included four treatments; maize monocrop, maize plots with night-time light-trap, a push–pull system, and night-time light-trap and push–pull integrated system. Each treatment was replicated five times. The study was carried out twice involving a rain feed (from July to October 2018) and irrigated (from April to June 2019) experiments.ResultsA significantly greater number of FAW moths were captured on traps placed outside maize field plots treated with light-trap and push–pull integrated system than traps placed outside the maize monocrop, light-trap alone and push–pull alone treated plots during the 2018 and 2019 experiment seasons. As a result, a significantly lower number of moths was found inside maize field plots treated with light-trap and push–pull integrated system than the other treatments. The levels of FAW eggs and larval infestation were significantly lower in maize plots treated with the light-trap and push–pull integrated system than the maize monocrops, push–pull alone, and light-trap alone treated plots. The proportion of plants damaged by FAW larvae was significantly lower in maize plots treated with the light-trap and push–pull integrated system relative to maize plots treated with the other treatments.ConclusionThis study proved that a system integrating night-time light-traps and push–pull results in better and more effective control of different stages of FAW than a push–pull system or night-time light-traps alone.

Push and Pull Motivation of Ecotourism Impact to Satisfaction Moderating by Eco-Experience

observing possibilities ecotourism experience in moderating push motivation and effect to the satisfaction. This research involves 221 respondents who’s randomly selected at ecotourism destinations.

The interplay between pre-departure and post-departure factors affecting cultural and academic adjustment of international students

PurposeThis paper aims to examine the effect of push and pull factors motivating international students to study abroad as two pre-departure factors to their mobility decision; and the effect of two post-departure factors – cultural distance and academic/university environment – on international students’ adjustment.Design/methodology/approachData were collected from 339 international students studying in Egypt. Structural equation modeling (SEM) was used to assess the effect of the independent variables on two facets of adjustment, the cultural adjustment and the academic adjustment.FindingsThe descriptive studies showed differences in level of adjustments, where the academic adjustment was higher than the cultural adjustment. Moreover, the SEM results have confirmed the significant role of all studied variables on general cultural adjustment; and all variables except for the push factors, on interaction cultural adjustment; and the effect of only push and academic environment on academic adjustment.Originality/valueThis paper is an attempt to extend the work on international students’ mobility via identifying the main pre-departure and the post-departure factors affecting their decision to study in Egypt and the interplay of those factors in shaping their level of adjustment. This study is among a relatively limited attempts in the field that would link push and pull motivational factors to level of adjustment and via detecting the effects on two different adjustments dimensions: the cultural and the academic dimensions; and within an under researched context as Egypt.

牛场补饲推料装置设计与试验

This paper proposed a supplemental feeding pusher based on beef cattle's auxiliary feeding needs to solve the traditional feeding mode of manual work, labor intensity, and inconsistent manual work standards. Firstly, the conveyed feed particles movement process was established as a motion model and the basis of the design parameters of the screw conveyor was explained. ANSYS static analysis module was used to ensure that the structural parameters of the discharging device were reasonable, ANSYS vibration modal analysis module was used to verify the frame strength and stability. According to the theoretical design of the trial prototype, the control system with STM32F103RE microcontroller as the core was carried out. Finally, the orthogonal test was conducted with the screw shaft speed, sweeping roller brush height, and traveling speed as test factors; different parameters were set to verify the effect of supplemental feeding and pushing, and parameter optimization of the test results was carried out using Design-Expert software. The optional combination of working parameters was determined to be the feeding screw shaft speed 188 r/min, the sweeping roller brush speed 160 r/min, and the work speed 0.26 m/s. The test demonstrated that the residual feed width was 0.73 m, and the transverse coefficient of variation was 14.9%, which could satisfy the needs of auxiliary feeding for beef cattle. This study reduced feed waste and met the cattle feeding needs to the greatest extent, and it could provide a reference for auxiliary feeding machinery.

Expectations, sentiments and capital flows to emerging market economies

This paper provides a novel look at capital flow determinants by assessing the role of expectations and media sentiments. Analyzing eight emerging market economies, we assess the effects of macroeconomic expectations and disagreement among professionals and various media-based sentiment indicators. Our results show that survey and sentiment indicators which are available in real time contain useful information about capital flow dynamics which go beyond the effects of conventional push and pull factors for all countries we analyze. News sentiment related to the exchange rate have the strongest effects on capital flows. Finally, we identify substantial heterogeneity across countries.

Adoption of Mobile Health Applications for Diabetes Management From a Push–Pull–Mooring Perspective

Diabetes management applications enable diabetes self-management in a more convenient and cost-effective manner. This study develops a push–pull–mooring model in order to understand patient-switching intentions to the conventional offline and the novel mobile diabetes management. Data collected from 412 adult patients with diabetes in China are analyzed to test the proposed hypotheses. The results show that push effects and pull effects have significantly positive effects on switching intention. Mooring effects negatively affect switching behavior. Meanwhile, the moderating effects of all three mooring factors (switching cost, offline habit, and private risk) on the relationship between both push-switching intentions and pull-switching intentions are also detected. These findings contribute to a deeper understanding of patient switching intentions towards diabetes management applications and, accordingly, can help marketers, healthcare providers, and health policymakers develop and appropriate their future marketing and administrative strategies.

How rising housing prices affect labor costs in China: Heterogeneity and lagging

AbstractThe impact of house prices rising on urban labor costs has typical heterogeneity and lag effects, but there is little literature on it. Based on the panel data of 283 prefecture level cities from 2001 to 2017, we constructed panel model considering lag effect and threshold effect. The results show that lag one period of housing price has significant positive impact on urban labor costs, with the increase of housing prices, the effect of pushing up the current labor costs is gradually increasing. So, this impact has obvious lag effect and threshold effect. Through grouped regression to test heterogeneity effect, at the regional level, the heterogeneity of the impact is more significant. The more developed the economy is, the greater the pushing effect of house prices on labor costs.

Motivation-oriented factors of women entrepreneurship: mediating role of challenges

PurposeThis study aims to investigate the effect of push, pull, balanced, and emotional factors on the motivational level of female entrepreneurship in Haryana state, India.Design/methodology/approachA quantitative study was conducted in Haryana's five districts among 384 women entrepreneurs using a convenience sampling method with a structured questionnaire. This study used structural equation modeling (SEM) to test the hypotheses.FindingsThe study found that Push, Emotional Factors, and Challenges have a significant impact on the motivational level of women’s entrepreneurship and Challenges only mediate with the Push and Pull factors.Research limitations/implicationsGeneralization of results based on data from a few districts of Haryana state in India. A cross-sectional study was performed as a Longitudinal study helps in analyzing the changing character of women entrepreneurs and the prime reasons behind their success. Non-probability sampling technique was used in the study whereas probability sampling technique promotes reliability and reduces systematic error and sampling bias.Practical implicationsPull factors can be promoted through mentoring, counseling, and entrepreneurship training programs. Creating a conducive external environment with job security and financial support from external agencies is essential. The Government of India should take the necessary steps to reduce the hindrances faced by women entrepreneurship while raising funds through banks and financial institutions.Originality/valueThe study employed a mediating variable, challenges, to investigate the impact of factors on the motivational levels of women entrepreneurs. To the best of our knowledge, this approach has not been utilized in previous research, making the current study a novel contribution to the field.

Pengaruh Latihan Push Up Dan Bicep Resistance Band Terhadap Kemampuan Pukulan Depan Atlet Pencak Silat Rayon Psht Maskarabet Kecamatan Alang Alang Lebar

This research uses a training model given by the trainer in an effort to improve the ability to hit the front blow. This study aims to determine the effect of push up and resistance band training on the front punch ability of PSHT Maskarebet District pencak silat athletes aged 15-17 years. The method in this research is an experiment with a pretest posttest design group design. The population in this study were 20 Rayon Psht Maskarebet Rayon Pencak Silat athletes aged 15-17 years, while the sample was taken equal to the population using a purposive sampling technique. Data were obtained using the front blow test technique. Data were analyzed using the Shapiro-Wilk normality test, homogeneity test and hypothesis testing using the paired sample t-test.The research results obtained that the pretest was the highest score of 39 with an average of 33.00, and the posttest was the highest score of 52 with an average of 47.55. Meanwhile, hypothesis testing used a paired sample T test and based on the calculation results in the table that t count was -26.006 > t table 2.086 and a significant value of 0.000≤0.05, then Ho is rejected. Ha accepted can be concluded based on the results, there is a comparison of the average changes in pretest and posttest from the data that has been obtained, the results of the pretest are an average of 33.00 and the results of the posttest are an average of 47.55, so the difference in the increase in pretest and posttest training is 14.55, that there is a significant influence of push up and bicep resistance band training on the front punch ability of pencak silat athletes from Rayon PSHT Maskarebet, Alang-alanglebar Subdistrict.

Exploration of TIK TOK's Contribution to the Communication of Huangmei Opera: An Analysis Based on the 5W Model

This study discusses the communication and inheritance of Huangmei Opera on TikTok. Adopting the 5W model comprehensively analyses five aspects: communication subject, content, object, medium, and effect. Huangmei opera, as a part of Chinese traditional opera, faces the challenge of a shrinking audience and market. However, TIK TOK, as a short video platform with wide influence, provides new opportunities for the dissemination of Huangmei opera.The study shows that vloggers at different levels play an important role on TIK TOK, especially high-influence professional actors and theatre troupes, who have effectively promoted Huangmei Opera by leveraging their large fan bases and high-quality content. Medium- to low-impact and emerging vloggers have also attracted a large number of viewers to Huangmei Opera through their diverse and interactive content. The findings show a significant positive correlation between viewers' interactive behaviours (e.g., liking, commenting, sharing) and viewing duration, suggesting that improving content quality and viewer engagement is crucial for communication effectiveness.This paper also explores the features of the TIK TOK, such as fragmented communication, interactive communication, precise pushing and community effect, which help Huangmei opera expand its influence among young audiences. Despite challenges such as differences in content quality and the short attention span of young audiences, the communication effect of Huangmei Opera on TikTok has been significantly improved through cooperation and innovation. The research in this paper provides new perspectives and practical suggestions for the communication strategy of Huangmei Opera in the digital era and further enriches the modern communication path of traditional art.

Simulation of Uterus Active Contraction and Fetus Delivery in ls-dyna.

Vaginal childbirth is the final phase of pregnancy when one or more fetuses pass through the birth canal from the uterus, and it is a biomechanical process. The uterine active contraction, causing the pushing force on the fetus, plays a vital role in regulating the fetus delivery process. In this project, the active contraction behaviors of muscle tissue were first modeled and investigated. After that, a finite element method (FEM) model to simulate the uterine cyclic active contraction and delivery of a fetus was developed in ls-dyna. The active contraction was driven through contractile fibers modeled as one-dimensional truss elements, with the Hill material model governing their response. Fibers were assembled in the longitudinal, circumferential, and normal (transverse) directions to correspond to tissue microstructure, and they were divided into seven regions to represent the strong anisotropy of the fiber distribution and activity within the uterus. The passive portion of the uterine tissue was modeled with a Neo Hookean hyperelastic material model. Three active contraction cycles were modeled. The cyclic uterine active contraction behaviors were analyzed. Finally, the fetus delivery through the uterus was simulated. The model of the uterine active contraction presented in this paper modeled the contractile fibers in three-dimensions, considered the anisotropy of the fiber distribution, provided the uterine cyclic active contraction and propagation of the contraction waves, performed a large deformation, and caused the pushing effect on the fetus. This model will be combined with a model of pelvic structures so that a complete system simulating the second stage of the delivery process of a fetus can be established.

Feed intake in housed dairy cows: validation of a three-dimensional camera−based feed intake measurement system

Measuring feed intake accurately is crucial to determine feed efficiency and for genetic selection. A system using three-dimensional (3D) cameras and deep learning algorithms can measure the volume of feed intake in dairy cows, but for now, the system has not been validated for feed intake expressed as weight of feed. The aim of this study was to validate the weight of feed intake predicted from the 3D cameras with the actual measured weight. It was hypothesised that diet−specific coefficients are necessary for predicting changes in weight, that the relationship between weight and volume is curvilinear throughout the day, and that manually pushing the feed affects this relationship. Twenty-four lactating Danish Holstein cows were used in a cross-over design with four dietary treatments, 2 × 2 factorial arranged with either grass-clover silage or maize silage as silage factor, and barley or dried beet pulp as concentrate factor. Cows were adapted to the diets for 11 d, and for 3 d to tie-stall housing before camera measurements. Six cameras were used for recording, each mounted over an individual feeding platform equipped with a weight scale. When building the predictive models, four cameras were used for training, and the remaining two for testing the prediction of the models. The most accurate predictions were found for the average feed intake over a period when using the starting density of the feed pile, which resulted in the lowest errors, 6% when expressed as RMSE and 5% expressed as mean absolute error. A model including curvilinear effects of feed volume and the impact of manual feed pushing was used on a dataset including daily time points. When cross-validating, the inclusion of a curvilinear effect and a feed push effect did not improve the accuracy of the model for neither the feed pile nor the feed removed by the cow between consecutive time points. In conclusion, measuring daily feed intake from this 3D camera system in the present experimental setup could be accomplished with an acceptable error (below 8%), but the system should be improved for individual meal intake measurements if these measures were to be implemented.

Who is more likely to upgrade to e-cars? Comparing the intentions of electric and conventional motorcycle riders in Vietnam

The shift from motorcycles to cars is rapidly accelerating in Vietnam – traditionally, a motorcycle-oriented country. Given high levels of pollution, a switch to e-cars as opposed to conventional cars is seen as a lesser evil. This study examines the intention to switch to e-cars among riders of conventional and electric motorcycles. The empirical data consist of nearly 1,000 original surveys collected in Hanoi in 2023, which are analysed through Partial Least Squares Structural Equation Modelling (PLS-SEM). Theoretically, the study adapts the Push-Pull-Mooring (PPM) model. We find that younger motorcycle riders from higher-income households are more interested in e-cars. The pull effects of e-cars are the strongest drivers of the intention to switch from motorcycles, whereas the push effects of motorcycles (whether conventional or electric) are much weaker. The mooring effects are similarly small but have moderating effects on pull factors. Electric motorcyclists have a stronger intention to upgrade to e-cars, partly due to their pro-environment values. The experience (and perhaps habit) of using an e-vehicle type appears to have a positive influence on the intention to adopt other green modes. In the status-conscious context of Vietnam, the concept of “saving face” through vehicle purchases is important too.

Numerical parametric study of embedded geosynthetic-reinforced soil abutment

Three-dimensional numerical analysis was conducted to investigate the performance of embedded geosynthetic-reinforced soil abutments. The numerical model was validated using field-monitoring data. A parametric study was conducted to investigate the key factors affecting the performance of the embedded abutment under the working conditions, including the pile offset distance, pile diameter, pile spacing, and bridge load. The piles exhibited a retaining rather than a pushing effect in these cases due to the relatively high stiffness and negative skin friction of the piles, thus reducing the loads exerted on the facing wall. The lateral displacement of the facing wall significantly increased as the pile offset distance decreased mainly due to the reduced anchor length of the reinforcement and enhanced retaining effect of the piles. As the pile diameter increases, the deflection of the facing wall is constrained by factors such as increased bearing width, limited displacement, and enhanced retention effect of thepiles. This is an efficient way to increase the pile density near the abutment centerline to control thedeformation of the facing wall. An increase in the vertical bridge load resulted in a decrease in negative skin friction, leading to increased foundation settlement and lateral displacement of the facing wall.

Assessing the effectiveness of push–pull ventilation worktables in isolating air contaminants under dynamic interference conditions

Assessing the effectiveness of push–pull ventilation worktables in isolating air contaminants under dynamic interference conditions

An empirical investigation of users' switching intention to public service robots: From the perspective of PPM framework

In recent years, the application of artificial intelligence (AI) technology has become increasingly common in the public sector. Users have been switching their experiences in handling businesses from interactions with human staff to those with robots. Prior studies have focused on investigating the key factors that influence users' adoption of public service robots; however, only a few have considered users' switching behaviors from traditional human services to robotic ones. This study employs a push–pull–mooring (PPM) framework derived from the human migration field to understand the factors that affect users' switching intentions in the context of public service robot applications. The research model was tested with 419 valid responses among users who had experienced both human services and public service robots in Chinese government service halls. The structural equation modeling (SEM) method was applied to quantitatively analyze the data. This study sheds new light on the key determinants of users' switching intentions toward public service robots from the perspectives of push, pull, and mooring effects. The results can help practitioners and managers understand users' intentions for such switches and make scientific decisions to encourage citizens' positive responses to service robots.

Water-assisted oxidative redispersion of Cu particles through formation of Cu hydroxide at room temperature

Sintering of active metal species often happens during catalytic reactions, which requires redispersion in a reactive atmosphere at elevated temperatures to recover the activity. Herein, we report a simple method to redisperse sintered Cu catalysts via O2-H2O treatment at room temperature. In-situ spectroscopic characterizations reveal that H2O induces the formation of hydroxylated Cu species in humid O2, pushing surface diffusion of Cu atoms at room temperature. Further, surface OH groups formed on most hydroxylable support surfaces such as γ-Al2O3, SiO2, and CeO2 in the humid atmosphere help to pull the mobile Cu species and enhance Cu redispersion. Both pushing and pulling effects of gaseous H2O promote the structural transformation of Cu aggregates into highly dispersed Cu species at room temperature, which exhibit enhanced activity in reverse water gas shift and preferential oxidation of carbon monoxide reactions. These findings highlight the important role of H2O in the dynamic structure evolution of supported metal nanocatalysts and lay the foundation for the regeneration of sintered catalysts under mild conditions.

A Heteronuclear W/Cu/S Clusters‐Based Donor–Acceptor Polymer for Perovskite Solar Cells

AbstractDonor–acceptor polymers containing the repeating moiety of electron‐rich unit (donor) and electron‐deficient group (acceptor), impair their highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) considerably localized on the donors and acceptors, respectively. Their band gaps can be well‐tuned by the electron‐donating ability of donors and the electron‐withdrawing ability of acceptors. The efficient splitting of photo‐generated excitons by electronic pull–push effect between donor and acceptor could promote the effective charge transport within polymer. Therefore, donor–acceptor polymers have the merits of versatile molecule structure, accessible functionalization, and adjustable electronic structure, becoming one of the most promising organic optoelectronic materials. For instance, by adjusting the alternating array of donor and acceptor moieties, a series of donor–acceptor polymers with lower band gaps and good light‐harvesting ability are prepared and used as potential photoelectronic materials.

Crowding-in or Crowding-out: How Infrastructure Investment Affects Household Consumption

Abstract This paper constructs a dynamic model of household consumption decisions and accordingly designs empirical analyses to identify how infrastructure investment affects private consumption. The estimation results of provincial panel data reveal that infrastructure investment can not only indirectly promote household consumption through the income channel but also directly promote household consumption expansion through the expectations channel, with a significant “crowding-in” effect. However, the effect is significantly weaker in provinces with a lower housing supply elasticity, showing the “crowding-out” pattern through the wealth channel. Household survey data provide an explanation for individual heterogeneity. Infrastructure investment has a greater pushing effect on house prices in provinces with a lower housing supply elasticity. Rapid house price growth has significant “crowding-out” effects on the consumption of wealthy households. This not only significantly weakens the driving effect of infrastructure investment on aggregate household consumption, but also increases wealth inequality in the long term. This paper explains how infrastructure investment affects household consumption and the corresponding role played by house prices, providing empirical evidences for theoretical studies related to macro-regulatory policies in China.

Statics and stability of diagonalless beams of particular kind – preliminary studies

Attractive large-scale glazing is currently an architectural trend. However, achieving adequate stiffness for larger glazing spans requires the use of complex cross-sections, generally aluminium sections of considerable height. Members with openwork webs are sometimes used in order to achieve increased load-bearing capacity and stiffness with reduced weight. The disadvantage is that this solution takes up a lot of space inside the building. A recently patented diagonalless member attempts to solve the above-mentioned problems. The member is fully demountable and allows glass units to be installed in the space between the chords. It consists of two chords spaced apart by metal sleeves with bolts passed through them. In this study, preliminary qualitative experimental tests were carried out to determine the behaviour of the member under load and to identify zones sensitive to local deformation. On this basis, numerical models (bar and 3D solid models, including contact interactions) were created and tested. Subsequently, the optimum sleeve spacing was determined, the effect of rotational and translational stiffness reduction at the nodes was investigated, and stress concentration zones and forms of stability loss were identified. A new form of local loss of stability of the chord facewall was identified, the so-called sliding push effect of the chord walls on the sleeve (within the larger openings). This is a completely different type of chord facewall failure from that found in known tubular welded joints. The research programme focused on identifying the phenomena occurring in the new member in order to provide a basis for further, more advanced analyses.