Survey Platforms Research Articles

You Say Potato, I Say Vegetable; You Say Tomato, I Say Fruit: Cognitive Validity of Food Group–Based Dietary Recall Questions

BackgroundThere is a need for valid, standardized approach for list-based questionnaires to measure food group consumption for indicators of diet quality including dietary diversity. ObjectivesA common method for collecting dietary diversity data consists of open-ended food group questions, e.g. “Yesterday, did you eat any vegetables, such as cucumber, cabbage, or celery?” We sought to examine the cognitive validity of open-ended questions that require respondents to categorize foods and closed-ended alternatives using sentinel foods. MethodsPretesting and 83 cognitive interviews were conducted in 5 languages in São Paulo and New York City in 2018. In structured interviews, respondents were asked to describe their thought processes in answering each question. Their feedback and responses to closed-ended and open-ended food group questions were compared. The Gallup World Poll then piloted 2 versions of the questionnaire in a nationally representative sample of 1000 in Brazil in 2018. ResultsRespondents in all settings miscategorized foods when asked open-ended food group questions (0%–82%, depending on the food group), respondents varied in their ability to think of other foods that belonged to specified food groups (35%–50% could think of any items), and open-ended questions presented an additional cognitive burden. There were no significant differences between the results from closed-ended and open-ended questions in the national pilot test. In the context of a multitopic survey, the finalized questionnaire took 3–5 min to answer, had no additional training requirements, and enumerators reported similar ease in administration as other survey modules. ConclusionsFor data collection on food group consumption, open-ended questions requiring respondents to categorize foods present cognitive validity problems. Closed-ended questions using sentinel foods reduce or eliminate ambiguity, presenting lower cognitive burden and greater comprehension. Based on these results, the closed-ended method has been adopted in international survey platforms for measuring dietary diversity and other aspects of diet quality.

Contamination concerns and face consciousness in fashion-sharing services

PurposeThe commercial sharing service (CSS) represents an emerging business model in which users pay a minor fee to rent a product for a short period of time. Fashion CSSs enable individuals to rent various garments and accessories with the goal of enhancing one’s public image while saving money. Marketers have strived to popularize fashion CSSs, but concerns related to contamination have thwarted their efforts. Based on face consciousness theory, this research examines how consumers’ desire to enhance their public image (i.e. to “gain face”) can attenuate the negative impacts of contamination concerns and thus facilitate fashion CSS usage.Design/methodology/approachTwo scenario-based studies were conducted to collect data. Participants were recruited via online survey platforms in mainland China. The hypotheses were tested by partial least squares (PLS) path modeling and linear regression analysis.FindingsThe analysis results revealed a two-stage mediation model. Contamination concerns were found to inhibit consumers’ participation in fashion-sharing by increasing their perceived risk, which further decreased the perceived value of the CSS. However, consumers’ desire to gain face can mitigate the negative (direct and indirect) effects of contamination concerns on CSS usage, facilitating CSS adoption.Originality/valueOur findings suggest that eliciting consumers’ desire to gain face can promote fashion CSS usage and attenuate the negative impacts of contamination concerns. Moreover, consumers are less risk-averse and less concerned about shared pieces being contaminated when they seek to enhance their face through fashion products. Practical implications for fashion marketers are discussed.

How men view stigma, shame, and blame in #MeToo

AbstractObjectiveThis study examined how men respond to #MeToo scenarios alongside perceptions of rape myths and gender equity. It examined social media post reactions of stigma, shame, fear repercussions, victim blaming, truth telling, and real assault belief.MethodsThe sample of 407 male survey participants responded to closed‐ and open‐ended questions in MTurk. Men responded to three #MeToo posts copied from Twitter, which included statements of sexual harassment and assault, to measure perceptions of stigmatization, shame, and victim blame. Variables also measured rape myth acceptance, gender equity ideals, and demographic variables such as race, ethnicity, employment, and relationship status.ResultsThe study demonstrated most men ascribed to rape myths and rape culture in their beliefs, but these beliefs usually did not lead directly to their written responses. The quantitative data showed men who accept rape myths also perceive victims as earning outcomes of shame, stigma, and blame. The qualitative data demonstrated most men supported victims’ posts sharing their #MeToo stories with few harmful, stigmatizing responses.ConclusionMen hold beliefs that might not lead to direct behaviors in responding to #MeToo posts. Additional research must be completed using other survey platforms to gain the male response to victim story sharing.

Can we still ensure no one is left behind by 2030? Demonstrating the potential of the implementation of the WHO Functioning and Disability Disaggregation Tool (FDD11) in existing survey platforms for disaggregating SDG indicators by disability

Purpose: The world is approaching the sustainable development goals deadline, but many countries still do not produce the data required to track their indicators by disability. Integrating valid and relievable disability measurement tools into existing data platforms is key to ensuring that “no one is left behind.” In this paper, we aim to demonstrate that it is possible to gather valid data on disability for disaggregation using the WHO Functioning and Disability Disaggregation Tool.Materials and methods: Using representative data from India, Lao PDR, and Tajikistan collected through the Gallup World Poll, we estimated the likelihood of a positive sustainable development indicator by disability level. Logit regression was used, adjusted for age, sex, household size, number of children, marital status, urban or rural area, and country-fixed effects.Results: Our estimates showed a consistent disability gradient across all countries and indicators: the higher the level of disability, the lower the probability of having a positive outcome in barely any sustainable development goal.Conclusion: Our study demonstrates that it is not too late to generate sound and precise data about inequalities faced by persons with mild, moderate, or severe disability. This data is essential for reducing inequalities through evidence-based policymaking.

SEMA3: A free smartphone platform for daily life surveys

Traditionally, behavioral, social, and health science researchers have relied on global/retrospective survey methods administered cross-sectionally (i.e., on a single occasion) or longitudinally (i.e., on several occasions separated by weeks, months, or years). More recently, social and health scientists have added daily life survey methods (also known as intensive longitudinal methods or ambulatory assessment) to their toolkit. These methods (e.g., daily diaries, experience sampling, ecological momentary assessment) involve dense repeated assessments in everyday settings. To facilitate research using daily life survey methods, we present SEMA3 (http://www.SEMA3.com), a platform for designing and administering intensive longitudinal daily life surveys via Android and iOS smartphones. SEMA3 fills an important gap by providing researchers with a free, intuitive, and flexible platform with basic and advanced functionality. In this article, we describe SEMA3’s development history and system architecture, provide an overview of how to design a study using SEMA3 and outline its key features, and discuss the platform’s limitations and propose directions for future development of SEMA3.

Empathetic and Emotive Design Heuristics: Preliminary Results of Their Application to Evaluating Survey User Interfaces.

Empathetic and emotive design is becoming increasingly important in the digital age. In this research we describe the results of a combined cognitive walkthrough and heuristic evaluation using newly developed, empirically derived empathy or emotive design heuristics. We applied the heuristics to the evaluation of four commonly used survey platforms. Our preliminary findings revealed that the heuristics performed effectively in scoring survey platforms on their level of empathy. Survey platforms that are highly empathetic were scored highest.

Surveyor and dasawisma training in housing database collection in Bukit Duri Village

Nestled within Tebet District, South Jakarta, Kelurahan Bukit Duri stands as a densely populated area, encompassing 108 hectares and home to 28,151 residents. This community empowerment initiative sought to empower university students as surveyors and community women (dasawisma) as survey assistants by equipping them with the necessary knowledge and skills. Through comprehensive training sessions, participants delved into the intricacies of building reliability assessment, the effective utilization of survey platforms, and communication strategies for conducting surveys. The program's impact was evident in the remarkable improvement in the empowerment and understanding of both surveyors and dasawisma. Prior to the training, their comprehension level stood at 30%, but upon completion, it surged to an impressive 90%. This program is poised to minimize errors during structural assessments, ensuring the safety and well-being of Bukit Duri's residents.

Shining a spotlight on the inclusion of disabled participants in clinical trials: a mixed methods study

BackgroundIt is crucial to include a wide range of the population in clinical trials for the outcome to be applicable in real-world settings. Existing literature indicates that under-served groups, including disabled people, have been excluded from participating in clinical trials without justification. Exclusion from clinical trials exacerbates disparities in healthcare and diminishes the benefits for excluded populations. Therefore, this study was conducted to investigate potential obstacles that prevent disabled people from participating in clinical trials in the United Kingdom (UK).MethodsThe study was carried out through an explanatory sequential mixed methods design. The Imperial Clinical Trials Unit devised and implemented an online questionnaire-based survey (with open/closed-ended questions) and an online focus group discussion. The target population were disabled people, family members/carers of disabled people and staff involved in clinical trials, whereupon the sample was recruited by convenience sampling methods via posters and emails through various networks. The Qualtrics XM survey system was used as the host platform for the online survey, and Microsoft Teams was used for an online focus group discussion. The focus group discussion was conducted to gain a deeper understanding of the themes identified from the survey responses. We analysed responses to the survey via descriptive analysis and used thematic analysis to synthesise the free-text answers from the survey and focus group discussion.ResultsWe received 45 responses to the survey questionnaire and 5 disabled people took part in a focus group discussion. Our findings highlighted the differences between the perspectives of researchers and those “being researched” and different types of barriers experienced by disabled people: opportunity barriers (inadequate recruitment strategy and ambiguous eligibility criteria), awareness barriers (perception of disability) and acceptance/refusal barriers (available support and adjustment, and sharing of trial results).ConclusionOur findings support perspectives drawn from the Ford Framework regarding the need to consider all barriers, not just up to the point of enrolment into trials but also beyond the point of inclusion in clinical trials. We support calls for the introduction of legislation on including disabled people in clinical trials, implementation of industry/community-wide participatory approaches and the development of guidelines, a combined public–private approach.

Embracing the ChatGPT revolution: unlocking new horizons for tourism

研究目的本研究旨在调查游客对使用ChatGPT获取旅游信息的态度和意向。此外, 通过将与ChatGPT相关的感知风险与计划行为理论（TPB）相结合, 本研究探讨了三种感知风险（隐私风险、准确性风险和过度依赖风险）对游客行为意向的影响。研究方法本研究通过两个在线调查平台收集了536名受访者的数据。在线调查问卷评估了游客对ChatGPT使用的感知风险、态度、主观规范、感知行为控制、行为意向以及与其使用ChatGPT相关的人口统计信息。研究发现结构方程建模分析显示, 游客对使用ChatGPT搜索旅游信息的相关风险表示关切, 特别是隐私风险、准确性风险和过度依赖风险。发现感知风险显著影响游客对使用ChatGPT的态度和意向, 与先前有关游客对ChatGPT感知风险的文献中提出的假设一致。研究创新本研究将TPB与ChatGPT中的感知风险相结合, 提供了实证证据。它强调了在考虑游客意向时考虑感知风险的重要性, 并为旅游中生成AI的可持续发展提供了贡献。因此, 它为从业者和政策制定者提供了宝贵的见解。

North Atlantic right whale density surface model for the US Atlantic evaluated with passive acoustic monitoring

The Critically Endangered North Atlantic right whale Eubalaena glacialis entered a population decline around 2011. To save this species without closing the ocean to human activities requires detailed information about its intra-annual density patterns that can be used to assess and mitigate human-caused risks. Using 2.9 million km of visual line-transect survey effort from the US Atlantic and Canadian Maritimes conducted in 2003-2020 by 11 institutions, we modeled the absolute density (ind. km-2) of the species using spatial, temporal, and environmental covariates at a monthly time step. We accounted for detectability differences between survey platforms, teams, and conditions, and corrected all data for perception and availability biases, accounting for platform differences, whale dive behavior, group composition, and group size. We produced maps of predicted density and evaluated our results using independently collected passive acoustic monitoring (PAM) data. Densities correlated positively (r = 0.46, ρ = 0.58, τ = 0.46) with acoustic detection rates obtained at 492 stationary PAM recorders deployed across the study area (mean recorder duration = 138 d). This is the first study to quantify the concurrence of visual and acoustic observations of the species in US waters. We summarized predictions into mean monthly density and uncertainty maps for the 2003-2009 and 2010-2020 eras, based on the significant changes in the species’ spatial distribution that began around 2010. The results quantify the striking distribution shifts and provide effort- and bias-corrected density surfaces to inform risk assessments, estimations of take, and marine spatial planning.

Isolation and loneliness as pathways to heavy drinking early in the pandemic.

social isolation and forced quarantines during the early phases of the COVID-19 pandemic coincided with a steep and persistent rise in alcohol consumption among US adults. While the association between loneliness and drinking is well established, less is known about the impact of social isolation (a known correlate of loneliness) and the interplay between these two variables in relation to drinking. we recruited US adults using the MTurk platform for an online survey in early April 2020. The initial survey was followed up with a second wave, 30days later in mid to late May. Data from the current analyses focus on this second wave of data collection. we found significant direct effects on heavy drinking for both social isolation (c'= 0.495; P< .01) and loneliness (b= 0.071; P< .05). We also found a significant indirect path from social isolation to heavy drinking through social isolation's impact on elevating loneliness (a= 0.919; P< .001). The indirect effect of social isolation on the composite measure of heavy drinking was 0.0652 (0.919 × 0.071) and was significant at the 0.05 level after bootstrapping estimates of the variance were constructed. those most isolated early in the pandemic were at increased risk for heavy drinking, in part because their social isolation led to increased loneliness. Post-pandemic research is needed to explore whether the relationships that stemmed from social isolation during the pandemic led to a persistent pattern of behavioral risk that maintained high rates of heavy drinking.

Environmental, behavioral, and design-related factors affect accuracy and precision of beluga abundance estimates from aerial surveys

Abundance estimation of wildlife populations is frequently derived from systematic survey data. Accuracy and precision of estimates, however, depend on the number of replicate surveys, and on adjustments made for animals unavailable to (availability bias), or available but undetected (perception bias) by observers. This study offers a comprehensive analysis of the relative influence of methodological, environmental and behavioral factors on availability bias estimates from photographic and visual aerial surveys of a small cetacean with a highly clumped distribution, the beluga (Delphinapterus leucas). It also estimates the effect of the number of surveys on accuracy and precision of abundance estimates, using 28 replicate visual surveys flown within a 16—29 day window depending on survey year. Availability bias was estimated using detailed dive data from 27 beluga from the St. Lawrence Estuary, Canada, and applied to systematic visual and photographic aerial surveys of this population, flown using various survey platforms. Dive and surface interval durations varied among individuals, and averaged (weighted) 176.6 s (weighted s.e. = 12.6 s) and 51.6 s (weighted s.e. = 4.5 s), respectively. Dive time and instantaneous availability, but not surface time, were affected by local turbidity, seafloor depth, whale behavior (i.e., whether beluga were likely in transit or not), and latent processes that were habitat-specific. Overall, adjustments of availability for these effects remained minor compared to effects from survey design (photographic or visual) and type of platform, and observer search patterns. For instance, mean availability varied from 0.33—0.38 among photographic surveys depending on sightings distribution across the study area, but exceeded 0.40 for all visual surveys. Availability also varied considerably depending on whether observers searched within 0-90° (0.42—0.60) or 170° (0.70—0.80). Simulation-based power analysis indicates a large benefit associated with conducting more than 1 or 2 survey reps, but a declining benefit of conducting &amp;gt; 5—10 survey reps. An increase in sample size from 2, to 5, and 10 reps decreased the CV from 30, to 19 and 13%, respectively, and increased the probability of the abundance estimate being within 15% of true abundance from 0.42, to 0.59 and 0.69 in species like beluga.

Childhood Gender Nonconformity and Sexual Orientation Disparities in Depressive Symptoms: The Role of Parental Attitudes.

Purpose: This study tested whether sexual orientation disparities in depressive symptoms are partially explained by recalled childhood gender nonconformity and whether the proportion of this association explained by childhood gender nonconformity is moderated by recalled parental attitudes toward childhood gender nonconformity. Methods: A convenience sample of young adults was recruited from two Chinese online survey platforms (272 heterosexual males, 272 bisexual males, 272 gay males, 272 heterosexual females, 272 bisexual females, and 272 lesbian females). Both mediation and moderated mediation models were conducted. Results: For both sexes, bisexual and gay/lesbian individuals reported significantly higher levels of depressive symptoms than heterosexual individuals, with total effects (standardized path coefficients) ranging from 0.25 to 0.38, all ps < 0.01. These sexual orientation disparities in depressive symptoms were partially explained by childhood gender nonconformity, with indirect effects ranging from 0.08 to 0.17, all ps < 0.001. The effect of childhood gender nonconformity on depressive symptoms was significantly moderated by parental attitudes. The mediating effect of childhood gender nonconformity on sexual orientation disparities in depressive symptoms was strongest at the more negative levels (one standard deviation [SD] above the mean) of parental attitudes and weakest at more tolerant levels (one SD below the mean) of parental attitudes. Conclusions: Childhood gender nonconformity may be a partial contributor to sexual orientation disparities in depressive symptoms and this indirect effect may be moderated by parental attitudes toward childhood gender nonconformity, with the indirect effect decreasing when parental attitudes move from negative toward more tolerant levels.

Associations between Self-Reported Anatomical Characteristics of the Penis and Sexual Dysfunction in Men

Premature ejaculation and erectile dysfunction are common male sexual dysfunctions worldwide, causing substantial distress in men as well as their partners and decreasing the quality and stability of romantic relationships. We investigated the associations between the self-reported anatomical characteristics of penises and sexual dysfunctions in an urban sample of Chinese men. We recruited 1085 Chinese urban men aged from 18 to 50 (M = 31.37; SD = 5.52) to fill out an online questionnaire regarding the anatomical characteristics of their penis, as well as early ejaculation and erectile problems via two Chinese online survey platforms. The participants reported their age, height, weight, penile length, penile circumference, circumcision status, and foreskin characteristics as well as answered the International Index of Erectile Function-5 and Checklist for Early Ejaculation Symptoms. Both an increasing penile length (M = 14.49; SD = 2.22) and girth (M = 15.46; SD = 4.36) were associated with fewer early ejaculation problems, but only an increasing penile length was associated with fewer erectile problems. Less foreskin covering the glans of the penis was associated with fewer early ejaculation and erectile problems. Age was found to have a non-linear relationship with early ejaculation and erectile problems in this cross-sectional study. Specifically, early ejaculation problems decreased until a certain age (31), and then increased with further increases in age. The relationship between the anatomical characteristics of the penis and sexual function is complex. Also, the results suggest that there is a curvilinear non-monotonic relationship between age and sexual dysfunction.

Sustainable tourism concept: tourist satisfaction and destination loyalty

PurposeThis study aims to look into and evaluate a sustainability-based destination loyalty model that takes into account how people perceive the urban destination in alignment with represented concept of sustainable tourism.Design/methodology/approachUsing a convenience sampling technique, 414 questionnaires were sent out to nonresident tourists (outside Bandung city) in Indonesia using online survey platforms and analyzed with the structural equation model method.FindingsSocioeconomic image, cultural image and environmental image all have a beneficial effect on tourists’ satisfaction levels. Furthermore, tourist satisfaction has a direct impact on destination loyalty. When it comes to tourists’ loyalty to a particular destination, only the degree to which they were satisfied moderated the influence of socioeconomic, cultural and environmental images.Research limitations/implicationsThe research sample exclusively comprised tourists hailing from Indonesia, a developing nation. Subsequent studies may evaluate tourists from various nations to obtain a more precise comprehension of the tourist population.Practical implicationsAuthorities and destination organizations should periodically examine tourists to get a feel for how they feel about a destination’s sustainability, so they can adjust policies as needed to keep tourism there viable over the long term.Originality/valueThis study aims to fill a significant gap in the existing literature by examining the impact of sustainable practices and initiatives on tourists’ satisfaction to an urban destination. The examination of the relationship between efforts to promote sustainability and destination loyalty can offer valuable insights for destination managers and policymakers who aim to improve long-term tourist relationships.

Explorations of Caregiver Health and Well‐Being

AbstractBackgroundRecent projections have found that the global prevalence of dementia is expected to grow rapidly through 2050, rising from an estimated 57.4 million cases in 2019 to an estimated 152.8 million cases by 2050. This has alarming public health consequences, as dementia takes a toll socially, emotionally, and financially, with a global societal cost of $1.3 trillion dollars in 2019. Caregivers are at the forefront of this crisis, with more than 11 million individuals in the US providing unpaid care for individuals with dementia, estimated at 16 billion dollars worth of care/year. Studies investigating the factors that impact caregiver burden are lacking. This study aims to 1) qualitatively examine caregiver burden and quality of life (QoL) 2) identify/highlight factors that might provide support and/or improve caregiver QoL.MethodThis is a qualitative, cross‐sectional study that will use a series of interviews and questionnaires to collect data. The studies will be created on, and deployed using, Qualtrics software, a commonly used platform for survey studies.ResultPrevious research suggests that factors impacting caregiver burden and QoL will be highly individualized across demographics such as socioeconomic status and race, and that QoL will be, on average, lower among caregivers as a group compared to the general population. We hypothesize that engagement in various lifestyle factors, particularly those that are self‐focused, regardless of amount of time spent on them, will correlate with higher QoL and lower caregiver burden scores.ConclusionThe factors that predict caregiver burden and quality of life are an important and often under‐examined part of dementia care. This study, expected to be completed in Spring 2023, will contribute to the current understanding of caregiver’s experiences, and provide practical ideas to help increase QoL and reduce burden.

Using curiosity to counter health information avoidance

ObjectiveInformation that is beneficial for health decision-making is often ignored or actively avoided. Countering information avoidance can increase knowledge of disease risk factors and symptoms, aiding early diagnoses and reducing disease transmission. We examine whether curiosity can be a useful tool in increasing demand for, and engagement with, potentially aversive but useful health information. MethodsFour pre-registered randomized online studies were conducted with 5795 participants recruited from online survey platforms. Curiosity for aversive health information was manipulated by providing a ‘curiosity incentive’ – identity-related information alongside aversive information – (Study 1), obscuring information (Studies 2 and 3), and eliciting guesses about the information (Studies 2 and 4). Willingness to view four types of aversive health information was elicited: alcohol consumption screening scores (Study 1), colon cancer risk scores (Study 2), cancer risk factors (Study 3), and the sugar content of drinks (Study 4). ResultsIn Study 1, the curiosity manipulation increased the likelihood that participants viewed information about the riskiness of their drinking. Studies 2 and 3 show that curiosity prompts can counter people's reluctance to learn about and assess their cancer risk. And Study 4 shows that using curiosity prompts to encourage engagement with aversive information (sugar content of drinks) also improves health-related choices (opting for a sugar-free drink alternative). ConclusionCuriosity prompts provide an effective and simple way to increase engagement with aversive health information.

Development &amp; performance enhancement of an AUV wave-charging system

Adoption of autonomous underwater vehicle (AUV) technology has recently experienced rapid growth, fueled by possibilities enabled by technological advances. AUVs are particularly useful as unmanned survey platforms, and typically have an array of on-board sensors to collect data for a variety of commercial and military applications. AUVs are autonomous and untethered systems and require a power source, typically batteries, to be carried onboard. An increase in available energy by even a small amount can be game-changing for AUV applications with benefits including longer mission durations, higher sampling rate, more sensing capability, and improved communication capability. This can be accomplished through some self-recharging capability within the AUV, allowing the AUV to extract energy from its surrounding environment, and eliminating the need to recover the vehicle until the mission is complete. &#x0D; This work presents a Wave Power Capture System (WPCS) that can be integrated into an AUV, allowing it to operate for significantly longer periods of time without the need for recovery. This concept utilizes two rotary power take-off (PTO) units that are driven by two independent tendons, located axially along the length of the body. The two tendons are connected to a retractable reaction plate that can be stowed against the body of the AUV when not in use and deployed autonomously when the AUV needs to surface and recharge. This arrangement allows both pitch and heave motion to be primary contributors to relative (power generating) motion. Additional motion in surge, sway and yaw will also result in some secondary power generation.&#x0D; This work focuses on the hydrodynamics and design of the reaction plate so that power capture and quality are enhanced. The geometry of the reaction plate will be constrained to a baseline semicircular shape, allowing the AUV to operate normally when the plate is stowed. Based on previous work, which has indicated that increasing the reaction plate added mass improves WEC power capture, the current work will thus look at different modifications to the reaction plate that effectively enhance its size when deployed, for example, incorporating multiple ‘nested’ reaction plates that mate together when stowed. The light weight of the reaction plate relative to its size means that there may be a tendency for the tendons to go slack and subsequently experience snap loading in cases where the reaction plate does not fall as fast as the AUV body. This work will further investigate the incorporation of dynamically adaptable geometries that reduce the reaction plate’s hydrodynamic resistance in the downward direction, for example, a structure that contains multiple flaps that hinge open during downward travel.&#x0D; A series of experiments will be presented in which the different reaction plate concepts are sinusoidally forced in a quiescent basin to characterize the translational and rotational hydrodynamic coefficients over a range of representative frequencies and amplitudes. Finally, a time-domain model developed using ProteusDS software, informed by the hydrodynamic coefficients measured experimentally, will be used to calculate AUV power performance in different sea states and evaluate the effect of the different reaction plate modifications.

Effectiveness of vertical error budget model for portable multi-beam echo-sounder in shallow water bathymetric survey

With the increasing availability of portable survey equipment and platforms, hydrographic data acquisition now offers a diverse range of device options and installation methods. Tailoring the mounting and installation of hydrographic survey devices to fit the boat or platform dimensions has become common practice. The use of portable equipment is essential, given the wide selection of combined options available in the market. Consequently, sensor offsets and device performance differ for each survey conducted, necessitating the constant verification of accuracy performance.This paper examines the capabilities of portable multibeam echosounder (MBES) deployments on various types of survey boats. The investigation focuses on error budget modeling and field tests. A model is developed to estimate the propagated uncertainty resulting from different sources of measurement uncertainties. The model primarily considers vertical sources of error in MBES surveys, as they have the most significant impact on hydrographic data quality. To validate the model, field tests are conducted at two different locations using different boat and device configurations. The results demonstrate that the modeled uncertainties align with the measured standard deviations, particularly in the Pramuka area, where the standard deviation of data acquired at the widest beam angle of ±60° is 0.25m, close to the predicted value of 0.28m. However, in the Patimban area, the model overestimates the uncertainty, predicting 0.27m compared to the measured standard deviation of 0.17m.

The impact of popularity cues on consumer effort for making experiential purchases: A study within the context of hospitality services

PurposeBased on the framework of social influence theory, this paper aims to explore the influence of popularity cues on consumer effort for making experiential purchases, as well as to examine the mediating role of conversational potential and the moderating role of consumer susceptibility to interpersonal influence (CSII). Design/methodology/approachA simple random sampling method was used to recruit participants from Chinese online survey platforms with a final total sample size of 371 participants for three experiments. Taking an experimental approach, this paper tests the proposed hypotheses by conducting three online experiments based on hospitality service scenarios. The data analyses were carried out using SPSS 25.0 software. Specifically, the effect of popularity cues on consumer effort was verified via a one-way ANOVA; the mediating role of conversation potential was analyzed using PROCESS Model 4; and the moderating role of CSII was tested using PROCESS Model 7. FindingsThe presence of popularity cues significantly increases conversational potential and consumer effort in acquiring hospitality services. The impact of popularity cues on consumer effort is mediated by conversational potential. The relationship between popularity cues and conversational potential is moderated by CSII. Specifically, the effect of popularity cues on conversational potential is only observable in high-CSII consumers. Originality/valueTo date, limited research has been conducted on the antecedent variables of consumer effort. This paper contributes to the existing literature on popularity cues and consumer effort by examining the effectiveness of popularity cues in motivating consumer effort and exploring its boundary conditions. This study empirically validates the proposed model and provides suggestions for future research and practical applications in hospitality services.