Credibility Indicators Research Articles

High expression of BBOX1 in paracancerous tissue is associated with poor prognosis in hepatocellular carcinoma patients

The molecular profile of paracancerous tissue has been reported to be prognostic for recurrence in patients with different cancers. This study investigated the clinical significance of the protein expression of gamma-butyrobetaine hydroxylase 1 (BBOX1) in tumor and paracancerous tissues of hepatocellular carcinoma (HCC) patients. This study assessed the role of BBOX1 mRNA in tumor and paracancerous tissues in HCC via bioinformatics analysis. The protein levels of BBOX1 in paired tumor and paracancerous tissues from 83 HCC patients were determined by immunohistochemistry. The associations among BBOX1 protein levels, clinicopathological characteristics and the survival probability of HCC patients were also analyzed. The results revealed that BBOX1 mRNA expression was significantly lower in HCC tissues than in noncancerous tissues. HCC patients with low BBOX1 mRNA expression had a significantly poorer overall survival than those with high BBOX1 expression did. Immunohistochemical analysis of BBOX1 protein expression further confirmed that its levels were markedly lower in HCC tissues than in paracancerous tissues. High BBOX1 expression in paracancerous tissues correlated with poor overall survival and disease-free survival in HCC patients. These findings suggest that the paracancerous BBOX1 expression might be a credible indicator for overall survival or disease-free survival in HCC patients.

(In)credibly queer? Assessments of asylum claims based on sexual orientation

AbstractPurposeQueer asylum‐seekers should be given an opportunity to have their claim evaluated in a fair and unbiased manner. Despite this, research shows they risk having their claims rejected based on stereotypes about sexual minorities. In the present study, we investigated how the Finnish Immigration Service evaluated credibility in asylum claims lodged by sexual minorities.MethodsWe analysed 68 negative asylum decisions to assess the arguments made to reject the asylum claim. To do this, we developed a detailed coding scheme to investigate the specific themes and credibility indicators cited in the asylum decisions.ResultsWe found that the asylum claims were most often rejected because the applicant's account of their sexual orientation was not found to be sufficiently detailed, consistent, or plausible. Officials appeared to hold assumptions around sexual identity development and interpersonal relationships that are partially unsupported by established psychological science.ConclusionsAssessments of SOGI claims would benefit from a greater consideration of the factors affecting queer asylum applicants' ability to describe their claims, including cross‐cultural differences in understandings of sexuality, variability in human behaviour, and practical barriers within the asylum procedure.

Reflective and Formative Indicators of Information Credibility on Social Media

ABSTRACTAs part of a larger project to develop a scale for measuring web credibility perceptions, this poster reports on preliminary findings of a literature analysis to identify reflective and formative indicators of information credibility on social media. Of 90 papers found by a systematic database search and screening, this poster examines 20 papers focused on information credibility on microblogs (e.g., Twitter, Weibo) as a popular source for online users' information seeking. Our analysis identified 22 reflective indicators (e.g., fair, accurate) and 31 formative indicators (e.g., reputable, attractive), eight (e.g., trustworthy, unbiased) of which overlapped. Given the intertwined, often blurred border between these two sets of items, the coding scheme developed in the present study can help determine the relevance and type of the items. Future research directions are discussed.

How Phenomenon-Based Learning May Contribute to Counteract Disinformation: A Case Presentation from Austrian Secondary Schools

The distribution of disinformation in online environments poses an increasing risk for pupils to be confronted with manipulated content. As a pedagogical strategy for schools, phenomenon-based learning (PhBL) is said to train a variety of required digital competences. This article aims to describe PhBL as practical teaching intervention to address disinformation in secondary schools. PhBL is a cross-curricular and subject-unspecific teaching intervention with a suggested duration of 8-12 teaching lessons and an appropriate age starting from 12/13 years. This investigation included that teacher organized project-oriented activities. The evaluation comprised semi-structured interviews with pupils (n=36) and their teachers (n=8) as well as video-based classroom observations in six classes with 107 pupils. The findings indicate that this teaching approach supported pupils to compare information sources, evaluate credibility indicators, and act criticaly as online consumers. After the intervention pupils said that they felt more sceptical of online and social media information.

Vaginal fluid creatinine in diagnosing pre-labor rupture of membranes in Vietnam

Pre-labor rupture of membranes (PROM) is a common issue in obstetrics that can lead to serious complications. Timely diagnosis is crucial for proper management of PROM. Creatinine concentration in vaginal fluid is a potential candidate for diagnosing PROM in resource constrained environment. This study aims to investigate the usability of creatinine concentration and its optimal cutoff value for diagnosing PROM. We conducted a case-control diagnostic test study at Hung Vuong Maternity Hospital, Vietnam. Pregnant women between 24–42 weeks were enrolled into case and control groups, with a ratio of 1:2. We used sterile speculum examination for fluid leak from cervix, nitrazine test and ferning test are used to determine membrane’s status. Vaginal fluid was collected by injecting sterile saline and later withdrawing. Data was summarized using descriptive statistics, difference between groups was tested using Mann Whitney U test. The cutoff value was determined by receiver operating characteristics (ROC) curve and Youden’s J statistic. Ethics approval was obtained from the local ethics committee, all participants gave written informed consent. We recruited a total of 693 pregnant women into the study – 231 participants in the study group and 462 participants in the control group. The median vaginal fluid creatinine concentration in the study group is significantly higher than those in the control group (0.84 mg/dL versus 0.09 mg/dL, p<0.01). The optimal cutoff for diagnosing PROM was 0.29 mg/dL, providing 93% sensitivity, 97% specificity and 95% accuracy. Vaginal fluid creatinine concentration is a credible indicator for PROM, providing great diagnostic power and high-quality information.

Identification and functional analysis of the hub Ferroptosis-Related gene EZH2 in diabetic kidney disease

BackgroundDiabetic kidney disease (DKD) is a common microvascular complication and one of the main causes of death in diabetes. Ferroptosis, an iron-dependent mode of cell death characterized by lipid ROS accumulation, was found to be associated with a number of diseases and has great potential for kidney diseases. It has great value to identify potential ferroptosis-related genes and their biological mechanisms in DKD. MethodsWe obtained the GSE30122 dataset from Gene Expression Omnibus (GEO) database and ferroptosis-related genes from the Ferrdb database. After differential expression analysis, and three machine learning algorithms, the hub ferroptosis-related gene EZH2 was identified. In order to investigate the function of EZH2, Gene Set Enrichment Analysis (GSEA), Gene Set Variation Analysis (GSVA) and single cell analysis were conducted. The expression of EZH2 was validated in DKD patients, HK-2 cell models and DKD mouse models. EZH2 knockdown HK-2 cells and HK-2 cells treated with GSK126 were performed to verify whether EZH2 affected ferroptosis in DKD. CHIP assay was used to detect whether EZH2 regulated ferroptosis by suppressing SLC7A11. Molecular docking was performed to explore EZH2 and four traditional Chinese medicine (Sennoside A, Berberine, Umbelliferone, Platycodin D) related to ferroptosis in DKD treatment. ResultsAccording to the GSE30122 dataset in GEO and ferroptosis-related genes from the Ferrb database, we obtained the hub ferroptosis-related gene EZH2 in DKD via diversified machine learning methods. The increasing of EZH2 expression was shown in single cell analysis, DKD patients, DKD mouse models and high glucose induced DKD cell models. Further study showed that EZH2 knockdown and inhibition can alleviate HG-induced ferroptosis in vitro. CHIP assay showed EZH2-mediated epigenetic silencing regulated the expression of SLC7A11. Molecular docking results showed that EZH2 had strong binding stability with Sennoside A, Berberine, Umbelliferone, and Platycodin D. ConclusionOverall, our data shouwed that histone H3K27 methyltransferase EZH2 could regulate the renal tubular epithelial cell ferroptosis by suppressing SLC7A11 in DKD, which may serve as a credible reliable indicator for diagnosing DKD and a potential target for treatment.

Why does a public health issue (not) get priority? Agenda setting for the national burns programme in India.

There is growing scholarly interest in what leads to global or national prioritization of specific health issues. By retrospectively analysing agenda setting for India's national burn programme, this study aimed to better understand how the agenda-setting process influenced its design, implementation and performance. We conducted document reviews and key informant interviews with stakeholders and used a combination of analytical frameworks on policy prioritization and issue framing for analysis. The READ (readying material, extracting data, analysing data and distilling findings) approach was used for document reviews, and qualitative thematic analysis was used for coding and analysis of documents and interviews. The findings suggest three critical features of burns care policy prioritization in India: challenges of issue characteristics, divergent portrayal of ideas and its framing as a social and/or health issue and over-centralization of agenda setting. First, lack of credible indicators on the magnitude of the problem and evidence on interventions limited issue framing, advocacy and agenda setting. Second, the policy response to burns has two dimensions in India: response to gender-based intentional injuries and the healthcare response. While intentional burns have received policy attention, the healthcare response was limited until the national programme was initiated in 2010 and scaled up in 2014. Third, over-centralization of agenda setting (dominated by a few homogenous actors, located in the national capital, with attention focused on the national ministry of health) contributed to limitations in programme design and implementation. We note following elements to consider when analysing issues of significant burden but limited priority: the need to analyse how actors influence issue framing, the particularities of issues, the inadequacy of any one dominant frame and the limited intersection of frames. Based on this analysis in India, we recommend a decentralized approach to agenda setting and for the design and implementation of national programmes from the outset.

Unleashing the potential of metaphors: a categorization system for exploring return to work after maternity

PurposeReturn to work after maternity leave represents a radical change in women’s lives. This paper aims to present a new metaphor categorization system based on two studies, which could assist working mothers in expressing the nuances of their experience when returning to work after maternity leave.MethodsWe carried out the analysis of the metaphors according to the method for thematic analysis, through a multistep, iterative coding process. To ensure the researchers encode the data similarly, inter-coder reliability was achieved through the judges’ agreement method. The level of agreement between the two judges was measured by Cohen’s kappa.ResultsIn Study 1, we established a system comprising ten metaphor categories (namely, Natural event and/or element, Challenge and destination, Movement and/or action, Fresh start, Fight, Game and hobby, Animal, Alternate reality, Means of transport, Hostile place). In Study 2, we recognized the same metaphor categories observed in Study 1, except “Means of transport”, even with data sourced from a distinct participant group, an indicator of credibility in terms of inter-coder reliability.ConclusionFindings highlight the usefulness of this new metaphor categorization system (named Meta4Moms@Work—Metaphors system for Moms back to Work) to facilitate a more straightforward elicitation of the meanings employed by working mothers to depict their return to work after maternity leave. Leveraging these insights, researchers/practitioners can develop and execute primary and secondary interventions aimed to enhance working mothers’ work-life balance, well-being, and mental health.

Transgender health information: assessing the quality of online resources

PurposeThe internet has evolved into an indispensable platform for seeking health information, particularly among transgender individuals. With an abundance of online resources available, extensive research into the credibility and reliability of this information is essential, as concerns about the quality of online resources persist. Transgender individuals are drawn to online health information due to the anonymity it offers, providing them with a sense of freedom from social isolation and the discomfort of experimenting with their transgender identity. However, it is crucial to assess the accuracy and reliability of the transgender health information available on the internet. This article aims to evaluate the quality of online transgender health resources by utilizing ten credibility indicators, along with six indicators to assess the veracity of the content.Design/methodology/approachA total of 179 online resources were meticulously reviewed after excluding any unnecessary and irrelevant ones, to ensure a comprehensive assessment.FindingsThe findings suggest that among the chosen resources, none of them meet all the criteria for maintaining high standards of accuracy and reliability in health information. In other words, none of these sources completely adhere to the established measures for ensuring that the information they provide is trustworthy and of high quality in the context of health.Originality/valueThe study provides valuable insights into the online realm of transgender health information, revealing both the strengths and weaknesses of the existing resources. By pinpointing areas that need enhancement and showcasing commendable practices, this research strives to promote a more knowledgeable and supportive online environment for individuals in search of transgender health information.

Generating Political Priority for the Health Needs of the 21st Century: A Qualitative Policy Analysis on the Prioritization of Rehabilitation Services in Uganda.

Few low- or middle-income countries (LMICs) have prioritized the expansion of rehabilitation services. Existing scholarship has identified that problem definition, governance, and structural factors are influential in the prioritization of rehabilitation. The objective of this study was to identify the factors influencing the prioritization and implementation of rehabilitation services in Uganda. A case study design was utilized. The Prioritization of Rehabilitation in National Health Systems framework guided the study. Data sources included 33 key informant interviews (KIIs) with governmental and non-governmental stakeholders and peer-reviewed and grey literature on rehabilitation in Uganda. A thematic content analysis and concept map were conducted to analyze the data. Rehabilitation is an unfunded priority in Uganda, garnering political attention but failing to receive adequate financial or human resource allocation. The national legacy of rehabilitation as a social program, instead of a health program, has influenced its present-day prioritization trajectory. These include a fragmented governance system, a weak advocacy coalition without a unified objective or champion, and a lack of integration into existing health systems structures that makes it challenging to scale-up service provision. Our findings highlight the interactive influences of structural, governance, and framing factors on prioritization and the importance of historical context in understanding both prioritization and implementation. Our findings demonstrate challenges in prioritizing emerging, multi-sectoral health areas like rehabilitation. Strategic considerations for elevating rehabilitation on Uganda's policy agenda include generating credible indicators to quantify the nature and extent of the population's need and uniting governmental and non-governmental actors around a common vision for rehabilitation's expansion. We present opportunities for strengthening rehabilitation, both in Uganda and in similar contexts grappling with many health sector priorities and limited resources.

Age-specific causes of upper gastrointestinal bleeding in children.

The etiology of upper gastrointestinal bleeding (UGIB) varies by age, from newborns to adolescents, with some of the causes overlapping between age groups. While particular causes such as vitamin K deficiency and cow's milk protein allergy are limited to specific age groups, occurring only in neonates and infants, others such as erosive esophagitis and gastritis may be identified at all ages. Furthermore, the incidence of UGIB is variable throughout the world and in different hospital settings. In North America and Europe, most UGIBs are non-variceal, associated with erosive esophagitis, gastritis, and gastric and duodenal ulcers. In recent years, the most common causes in some Middle Eastern and Far Eastern countries are becoming similar to those in Western countries. However, variceal bleeding still predominates in certain parts of the world, especially in South Asia. The most severe hemorrhage arises from variceal bleeding, peptic ulceration, and disseminated intravascular coagulation. Hematemesis is a credible indicator of a UGI source of bleeding in the majority of patients. Being familiar with the most likely UGIB causes in specific ages and geographic areas is especially important for adequate orientation in clinical settings, the use of proper diagnostic tests, and rapid initiation of the therapy. The fundamental approach to the management of UGIB includes an immediate assessment of severity, detecting possible causes, and providing hemodynamic stability, followed by early endoscopy. Unusual UGIB causes must always be considered when establishing a diagnosis in the pediatric population because some of them are unique to children. Endoscopic techniques are of significant diagnostic value, and combined with medicaments, may be used for the management of acute bleeding. Finally, surgical treatment is reserved for the most severe bleeding.

Do safety management system standards indicate safer operations? Evidence from the OHSAS 18001 occupational health and safety standard

Problem definitionGiven the enormous disruptions and costs of occupational injuries, companies and buyers are increasingly looking to voluntary occupational health and safety standards to improve worker safety. Yet because these standards only require implementing certain processes and procedures, it is largely unknown whether certification actually conveys superior safety performance. We examine this relationship in the context of the OHSAS 18001 Occupational Health and Safety Management system standard. Methodology/resultsWe analyze proprietary certification data over 1995 to 2016 from some of the world’s largest certification bodies and establishment-level injury data from the U.S. Bureau of Labor Statistics, and find that U.S. establishments certified to OHSAS 18001 tend to be safer workplaces. OHSAS 18001 attracts establishments with fewer injury and illness cases than comparable establishments (a selection effect). Using propensity score matching and a difference-in-differences approach, we estimate that OHSAS 18001 certification reduces the total number of illness and injury cases by 20 percent and illness and injury cases associated with job transfers or restrictions by 24 percent. Managerial implicationsOur results indicate that becoming certified to a safety management standard can lead to meaningful improvements in workplace safety, and that OHSAS 18001 certification is a credible indicator of superior average safety performance, an important insight for buyers and suppliers. Given that OHSAS 18001 is the basis for the newer ISO 45001 standard that has quickly become the world’s third-most popular management system standard, this study provides promising evidence that ISO 45001 will also prove effective in distinguishing safer workplaces.

Analysis of news credibility in the digital press. Source types have a limited effect, while age, gender, and education are differential factors

Studies of the credibility of sources is a key research focus in the communication field, especially in journalism. Given the increase in misinformation as a consequence of the COVID-19 pandemic, source credibility is crucial for people to contrast news stories in an infodemic context. Our research, based on a demographic study ( N = 2007) carried out in Spain during the COVID-19 pandemic, used a multifactor news credibility indicator to explore how different types of sources affected the perceived credibility of a fake news item on COVID-19 in the written digital press format. We also performed a cluster analysis to determine the subgroups profiled according to key sociodemographic variables (age, gender, and education). Our results indicate that expert and political sources had a null effect on news credibility, while citizen and celebrity sources had a clear negative effect. Furthermore, our fake news story that did not cite sources was awarded a positive level of credibility. We also found that age, gender, and education level were statistically significant in their association with news credibility.

No politics in funding pitches: An expectancy violations theory perspective of entrepreneurs' political expressions in crowdfunding

Drawing from expectancy violation theory, we investigate how entrepreneurs' language-based expressions of their political ideology influence the performance of their crowdfunding campaigns. We argue that crowdfunding funders expect campaigns to be apolitical, suggesting that entrepreneurs' expressing their political ideologies – regardless of the specific ideology – create a negative expectancy violation that decreases funding performance. As source credibility is a central boundary condition for expectancy violation theory predictions, we also suggest this relationship is mitigated by three indicators of entrepreneurial credibility: prior successful experience, media usage, and third-party endorsements. Using a sample of 19,898 Kickstarter campaigns and a randomized experiment, we find support for our theoretical predictions.

Attenuation of binuclear hepatocytes in the paracancerous liver tissue is associated with short-term recurrence of hepatocellular carcinoma post-radical surgery.

Short-term recurrence of hepatocellular carcinoma (HCC) after radical resection leads to dismal outcomes. To screen high-recurrence risk patients to provide adjuvant treatment is necessary. Herein, based on our previous research, we further focused on the changes in the abundance of binuclear hepatocytes (ABH) in the paracancerous liver tissue to discuss the relationship between the attenuation of binuclear hepatocytes and postoperative short-term recurrence, by combining with the assessment of the value of a reported independent early recurrence risk factor in HCC, protein induced by vitamin K absence or antagonist-II (PIVKA-II). A cohort of 142 paracancerous liver tissues from HCC patients who received radical resection was collected. Binuclear hepatocytes were reduced in the paracancerous liver tissues, compared with the liver tissues from normal donors. ABH was negatively correlated with clinical features such as tumor size, TNM stages, tumor microsatellite formation, venous invasion, and Alpha-fetoprotein (AFP) level, as well as the expression of E2F7 and Anillin, which are two critical regulators concerning the hepatocyte polyploidization. According to the short-term recurrence information, ABH value was laminated, and univariate and multivariate logistic regression was performed to analyze the relationship between paracancerous ABH and short-term tumor relapse. Simultaneously, the predictive effectiveness of the ABH value was compared with the preoperative PIVKA-II value. As observed, the paracancerous ABH value below 1.5% was found to be an independent risk factor for recurrence. In conclusion, the paracancerous ABH is a credible indicator of short-term recurrence of HCC patients after radical resection, and regular assessment of ABH might help to prevent short-term HCC recurrence.

A semantic vector map-based approach for aircraft positioning in GNSS/GPS denied large-scale environment

Accurate positioning is one of the essential requirements for numerous applications of remote sensing data, especially in the event of a noisy or unreliable satellite signal. Toward this end, we present a novel framework for aircraft geo-localization in a large range that only requires a downward-facing monocular camera, an altimeter, a compass, and an open-source Vector Map (VMAP). The algorithm combines the matching and particle filter methods. Shape vector and correlation between two building contour vectors are defined, and a coarse-to-fine building vector matching (CFBVM) method is proposed in the matching stage, for which the original matching results are described by the Gaussian mixture model (GMM). Subsequently, an improved resampling strategy is designed to reduce computing expenses with a huge number of initial particles, and a credibility indicator is designed to avoid location mistakes in the particle filter stage. An experimental evaluation of the approach based on flight data is provided. On a flight at a height of 0.2 km over a flight distance of 2 km, the aircraft is geo-localized in a reference map of 11,025 km2 using 0.09 km2 aerial images without any prior information. The absolute localization error is less than 10 m.

Modeling response of tree slenderness to climate, soil, diversity, and competition in natural secondary forests

The tree slenderness coefficient (TSC) serves as a simplified measure of tree stability, which is subject to the complex influences of climate, soil, diversity, and competition. Quantifying and exploiting the risks affecting the TSC facilitates the development of forest stability restoration measures. In the current climate change and multiple risk coexistence scenario, the interactions of risks are expected to have non-negligible effects on the TSC. However, past efforts have been limited to independent effects without interactive effects, which is detrimental to a proper understanding of ecology. For example, the inconsistent effect direction of the same indicator on TSC in past studies may be due to the neglect of the interactive effects of the indicators. Natural secondary forests are effective mitigation tools for climate change that urgently need to be managed appropriately to maximize their stability and provide a wide range of benefits. Therefore, we conducted the first comprehensive investigation of both independent and interactive effects of climate, soil, diversity, and competition on TSC, utilizing data from 13,874 trees of three principal tree species distributed in Chinese boreal natural secondary forests. Further, simulation examples were provided to present actionable management measures using the improved insight. The results showed that short-wave solar radiation (Srad), cation exchange capacity (CEC), Pielou evenness index (Pielou), and basal area (BA) exerted positive independent influences on TSC, while mean annual precipitation (MAP) did the opposite. The significant interaction terms were BA × Pielou, BA × Srad, Pielou × CEC, and Srad × CEC, all of which showed positive effects on TSC. In addition, the interactions produced non-negligible forces on the TSC, especially for small-sized trees, as the relative importance was quite large. Importantly, the effect directions of the indicators on the TSC were inconstant and changed with the gradients of other indicators due to the presence of interactions. Finally, the simulation results showed that tree stability in 97.1% of the plots was negatively affected by Srad or CEC, which could be transformed into positive effects by adjusting BA or Pielou above the critical points. This research offers a novel insight into the importance of interactions in credible TSC modeling and indicator analysis, which may hopefully serve as a beginning to guide forest management based on tree stability while faced with environmental change.

The Impact of ESG Ratings on Employee Performance in Companies

Sustainability, environmental, social and governance (ESG) ratings have become an important indicator for investors to assess corporate performance. However, the impact of ESG ratings on corporate employee performance is not as clear. Some studies suggest that companies with high ESG ratings have an advantage in attracting and retaining good employees and are likely to perform better in terms of employee performance. On the other hand, some studies have found that the relationship between ESG ratings and employee performance is not necessarily statistically significant. Thus, while ESG ratings are emerging as a credibility indicator for companies among investors and consumers, the specific impact of ESG ratings on employee performance needs further research.

Consistency amongst pairs: How consistent are child co‐witnesses with one another?

AbstractPurposeWhen multiple children are asked about the same event, the consistency of their reports may be used as a heuristic for credibility. Little research has considered how consistent child co‐witnesses are likely to be. In this study, we explored how likely child co‐witnesses were to report the same details from a mutually experienced event.MethodsPairs of children participated in an educational science event during which the target attempted to coax the children into breaking preestablished rules for the session (i.e., commit transgressions). Children were individually interviewed about their experience on two subsequent occasions.ResultsCo‐witnesses tended to be quite inconsistent: 32%–55% of all details recalled were only mentioned by one co‐witness. Various factors were associated with co‐witness consistency, including delay before the interview, centrality of details recalled, and children's age and forthcomingness.ConclusionsThe findings indicate that inconsistency between co‐witnesses reflects a natural memory phenomenon, and that practitioners should be cautious of using co‐witness consistency as an indicator of credibility.

The Effect of Using Twice's Girlband K-pop as The Brand Ambassador on Increasing The Value of The Scarlett Whitening Brand

Brand name plays a significant role in the sustainability of the business. Scarlett Whitening uses Korean public figures, namely K-Pop Twice, as the communicator to sth strengthen its image. This study aims to see whether there is an effect of using a Korean brand ambassador on increasing the brand value of Scarlett Whitening. There are four dimensions of brand ambassador used as independent variables of brand value. The data from 105 respondents that were chosen judgmentally was analyzed using multiple linear regression. The study found that visibility and credibility indicators had a positive but not significant effect on brand value, while attraction and power indicators had a positive and significant effect on brand value. So the conclusion is that the hypothesis in this study is accepted because brand ambassadors are proven to have a positive influence on brand value.