The Internet-of-Things (IoT) empowers remote monitoring and management of the performance of machines, vehicles, processes, etc., which facilitate service business models. However, companies in ...emerging and transitional economies, in particular, face challenges when applying IoT, not only related to the use of technology, but especially regarding the need for a new business model. The main goal of this paper is to better understand emerging IoT business models in Vietnam through identifying and interpreting business model design options and choices. The case studies and their commonalities are used to perform a morphological analysis and create a generic IoT business model providing business model alternatives for each of the four business model dimensions. The research provides insights into the commonalities and discrepancies of IoT-based business models. Also, it provides a novel application of morphological analysis to business model innovation to create a generic business model for IoT applications in emerging markets.
Fuzzy set qualitative comparative analysis (fsQCA) is a novel and powerful methodology used as an analytical technique and research approach in the social science field. This study aims to extend the ...application of fsQCA in investigating the structural associations of antecedents and the outcomes in a multi-layer problem. The research framework of ethnic themed restaurants suggested by Lu et al. (2015) and the new consistency by Huarng (2016) were adopted. With the same data set, the findings from the systems approach and fsQCA confirmed the three and four dimensions of brand equity, respectively, which provided explanations for complexity theory, while reinforced fsQCA's appropriateness. From the managerial perspective, the study unraveled the need for managers to implement proper strategies to achieve the objective of higher retention.
•The appropriateness of fsQCA in solving multi-layer problems is reinforced with new consistency.•With systems approach and qualitative comparative analysis, complexity theory is supported.•The contents of higher retention in terms of authenticity are developed.
Internet of Things (IoT) is a term that has been introduced in recent years, and it defines objects being able to connect and transfer data through the internet. Although some IoT-related products ...are currently available in the market, there are still some IoT problems that need to be overcome, such as the security issues and lack of confidence and understanding of IoT. This study aims to analyze the influential factors in building successful IoT system for IoT-related enterprises. This study develops a rule-based decision support mechanism using fuzzy set theory and the Analytic Hierarchy Process (AHP) to evaluate the influential factors in IoT. This study finds that tangible factors (Security, Value and Connectivity) are more important than the intangible factors (Telepresence and Intelligence). Finally, this study concludes that after enterprises build a good IoT connectivity system, it is essential to combine this with good IoT security to create a successful IoT environment. Enterprises should also consider both IoT security and IoT values for the IoT products and employees' working convenience.
•This study aims to analyze the influential factors in building successful IoT system for IoT-related enterprises.•This study develops a rule-based decision support mechanism using fuzzy set theory and Analytic Hierarchy Process (AHP).•This study evaluates the influential factors in IoT via fuzzy set AHP.•This study finds that tangible factors are more important than the intangible factors.•This study concludes that a good IoT connectivity system, it is essential to combine this with good IoT security.
Rice straw open burning (RSOB) after harvest is one of the considerable emission sources in agricultural activities and contributed to air pollution in Vietnam. Determination of country/city-specific ...emission factors for air pollutants from open burning is important for the better estimation of air pollutant emission. In this research, hood experiments and field experiments were conducted simulating the common small pile burning type used by farmers in the North of Vietnam to determine emission factors (EFs) for gaseous pollutants, particulate matter (PM), and particle-bound polycyclic aromatic hydrocarbons (PAHs). The carbon_mass balance and emission ratio method were used to calculate EFs for the field experiments. The PM
2.5
emission factor obtained for open field burning (34.0 ± 17.6 g kg
−1
RS), the EFs for SO
2
(1.4 ± 1.1 g kg
−1
RS for field experiments and 1.82 ± 1.77 g kg
−1
RS for hood experiments) in this study was higher in comparison with the values reported in Thailand and China. Laboratory experiments showed positive correlation between RS carbon content and EF of CO
2
. The higher proportion and the contribution of benzo
a
pyrene (B
a
P) to the total 10 detected PAHs bound to PM
2.5
in RS burning smoke was the first observation in this study. Based on the EFs developed in this study, we estimated that RSOB released the amount of 369.6 Gg for CO
2
, 13.7 Gg for CO, 0.67 Gg for SO
2
, 0.35 Gg for NO
2
, 10.8 Gg for PM
2.5
, and 32 Mg for total 10 particle-bound PAHs to the atmosphere in Hanoi. These results are useful for integrated air-quality management in local as well as national scale.
Abstract
α-Thalassemia is a common inherited blood disorder manifested mainly by the deletions of α-globin genes. In geographical areas with high carrier frequencies, screening of α-thalassemia ...carrier state is therefore of vital importance. This study presents a novel method for identifying female carriers of common α-thalassemia deletions using samples routinely taken for non-invasive prenatal tests for screening of fetal chromosomal aneuploidies. A total of 68,885 Vietnamese pregnant women were recruited and α-thalassemia statuses were determined by gap-PCR, revealing 5344 women (7.76%) carried deletions including αα/−−
SEA
(4.066%), αα/−α
3.7
(2.934%), αα/−α
4.2
(0.656%), and rare genotypes (0.102%). A two-stage model was built to predict these α-thalassemia deletions from targeted sequencing of the HBA gene cluster on maternal cfDNA. Our method achieved F1-scores of 97.14–99.55% for detecting the three common genotypes and 94.74% for detecting rare genotypes (−α
3.7
/−α
4.2
, αα/−−
THAI
, −α
3.7
/−−
SEA
, −α
4.2
/−−
SEA
). Additionally, the positive predictive values were 100.00% for αα/αα, 99.29% for αα/−−
SEA
, 94.87% for αα/−α
3.7
, and 96.51% for αα/−α
4.2
; and the negative predictive values were 97.63%, 99.99%, 99.99%, and 100.00%, respectively. As NIPT is increasingly adopted for pregnant women, utilizing cfDNA from NIPT to detect maternal carriers of common α-thalassemia deletions will be cost-effective and expand the benefits of NIPT.
Background Under the pressure of Human Adenovirus (HAdV)-associated acute respiratory infection (ARI) outbreak in children in Northern Vietnam in the end of 2022, this study was initiated to identify ...the HAdV subtype(s) and examine the associated clinical features and risk factors of more severe cases. Methods This study evaluated pediatric patients with ARI which had tested positive for HAdV between October and November 2022 using a multiplex real-time PCR panel. Nasopharyngeal aspirates or nasal swab samples were used for sequencing to identify HAdV subtypes. Clinical data were collected retrospectively. Results Among 97 successfully sequenced samples, the predominant subtypes were HAdV-B3 (83%), HAdV-B7 (16%) and HAdV-C2 (1%). Lower respiratory manifestations were found in 25% of the patients of which 5% were diagnosed with severe pneumonia. There was no significant association between HAdV subtype and clinical features except higher white blood cell and neutrophil counts in those detected with HAdV-B3 (p<0.001). Co-detection of HAdV with greater than or equal to1 other respiratory viruses was found in 13/24(54%) of those with lower respiratory manifestations and 4/5(80%) of those with severe pneumonia (odds ratio (95% confidence interval) vs. those without = 10.74 (2.83, 48.17) and 19.44 (2.12, 492.73) respectively after adjusting for age, sex, birth delivery method, day of disease). Conclusion HAdV-B3 and HAdV-B7 were predominant in the outbreak. Co-detection of HAdV together with other respiratory viruses was a strong risk factor for lower respiratory tract illnesses and severe pneumonia. The findings advocate the advantages of multi-factor microbial panels for the diagnosis and prognosis of ARI in children.
•Provide a model of e-satisfaction and its application using gratification theory.•Develop the contents of online informative motivation.•Use PLS and fsQCA to evidence the moderating role of online ...ratings.
Given the growing importance of SNSs (social networking sites) in the online decision-making process, the authors present a new applied theory of motivation. Drawing from gratification theory, this study develops a causality model that links online informative motivation (OIM), e-satisfaction, and online ratings to guarantee the online customer’s continuance intention. Although the partial least squares (PLS) findings extracted from a representative sample of 313 hotel customers confirm substantial positive linkages among the above constructs within this causality model, fuzzy set/qualitative comparative analysis (fsQCA) results take it one step further by reinforcing and refining the existing findings in the contexts of high and low levels of online ratings. Accordingly, implications for theory and practice, as well as research limitations and directions for future research are also discussed.
Internet technology has popularized the “like” as a type of social endorsements on social media. Despite the high impact of brand passion on customer behavior and brand performance, questions remain ...regarding how social endorsement triggers customer desires toward a brand. This study establishes “like-clicking” behavior on social media as a form of friend-bonding social endorsement and crowd-bridging social endorsement, based on theories of social capital and self-congruence, and examines the extent to which endorsement turns into emotional attachment (i.e., brand passion). Two approaches were employed: Partial Least Square (PLS) and Fuzzy Set Qualitative Comparative Analysis (FsQCA). The PLS and fsQCA results revealed causal and structural associations of friend-bonding and crowd-bridging social endorsements with self-verification and self-enhancement, and thereby with the outcome of obsessive and harmonious brand passion. These findings enrich our understanding of social endorsement. Encouraging customers to endorse the brand through passionate behavior is a sound marketing strategy.
The use of virtual reality (VR) has become a viable alternative to conventional learning methods in various knowledge domains. Wearable head-mounted displays (HMDs) are devices that provide users ...with an immersive VR experience. To investigate the direct determinants affecting students’ reasons for HMD use in learning, hypotheses relating to information technology acceptance and Kolb’s learning styles were proposed and tested in this study. Participants were recruited through stratified random sampling according to the population ratio of colleges at a university in Taiwan. Students were shown a video on VR applications in learning, after which an online survey was completed. In total, 387 questionnaires were collected of which 376 were valid. An inference analysis of the samples was performed by structural equation modelling with eight exogenous latent variables, namely the four constructs of the unified theory of acceptance and use of technology (UTAUT) and the four modes of Kolb’s learning styles. All eight variables pointed to one endogenous latent variable: behavioural intention. The results showed all four constructs of the UTAUT to have a positive and significant effect on students’ behavioural intention to use HMDs in learning and only the concrete experience mode of Kolb’s learning styles to have a positive and significant effect. Based on these findings, this study provides suggestions on how to encourage HMDs use in learning to VR developers and educational institutions.
Purpose
This study aims to adopt implicit theory (IPT) to develop a creative mindset model and drive entrepreneurial success through innovation capability (IC).
Design/methodology/approach
Expert ...interviews were conducted using a questionnaire protocol. This study investigated the effect of the creative mindset on entrepreneurial success through IC, using a partial least squares analytical technique and by interviewing 176 Thai business owners.
Findings
The creative mindset drove entrepreneurial success through IC. Entrepreneurs possessing a growth mindset reflected and drove success directly or through IC. Although, those with a strong, fixed mindset did not significantly affect entrepreneurial success, they could drive success through IC.
Research limitations/implications
This study provides further insight into the probable causation of how the creative mindset and IC affect tourism entrepreneurs’ success. Accordingly, this study contributes a framework to help entrepreneurs’ creativity and performance in achieving their business goals.
Originality/value
Drawing from IPT, this study empirically tests and substantiates the mediating role of IC in the relationship between the creative mindset and entrepreneurial success in the tourism industry. This study can help entrepreneurs increase their managerial effectiveness.
