Science Talks最新文献_第7页

It tastes sweeter when melted: Exploring the impact of food temperature on tongue temperature and perceived sweetness/vanilla 融化后尝起来更甜：探索食物温度对舌头温度和感知甜味/香草的影响

Science Talks Pub Date : 2025-03-01 Epub Date: 2025-01-27 DOI: 10.1016/j.sctalk.2025.100424

Hannah McNeill , Rebecca Ford , Ian Fisk , Margaret Thibodeau , Gloria Liu , Marion Doyennette , Qian Yang

{"title":"It tastes sweeter when melted: Exploring the impact of food temperature on tongue temperature and perceived sweetness/vanilla","authors":"Hannah McNeill , Rebecca Ford , Ian Fisk , Margaret Thibodeau , Gloria Liu , Marion Doyennette , Qian Yang","doi":"10.1016/j.sctalk.2025.100424","DOIUrl":"10.1016/j.sctalk.2025.100424","url":null,"abstract":"<div><div>The relationship between perceived sweetness intensity and temperature of food is complex. Previous research on the effect of temperature on sweetness perception primarily focused on single solutions. This study aimed to address the gap by using an infrared camera to measure tongue surface temperature, explore tongue temperature ranges, the relationship between sweet/flavour and tongue temperature at different serving temperatures during real food consumption. Participants (<em>n</em> = 22) consumed custard served at warm (59.1 ± 0.8 °C), ambient (24 ± 0.6 °C), chilled (4.6 ± 0.5 °C), and frozen (−2.7 ± 0.3) temperatures. An infrared camera was used to capture participant tongue surface temperature. Sweetness and vanilla intensity were recorded using a modified General Labelled Magnitude Scale. This study demonstrated that infrared imaging could effectively capture tongue surface temperature. Results revealed tongue surface temperature recovered to baseline more efficiently after cooling than warming. A weak positive correlation was found between tongue surface temperature, perceived sweetness (<em>r</em> = 0.234, <em>p</em>-value = 0.002) and vanilla intensity (<em>r</em> = 0.226, p-value = 0.003). Perceived sweetness intensity was significantly higher for warm custard (tongue = 37.3 °C, sweetness = 20.5) than frozen custard (tongue = 27.1 °C, sweetness = 13.3). This suggests that temperature changes on the tongue during food consumption could significantly contribute to the perceived intensity of sweetness. The findings provide valuable insights to food industries interested in sugar reduction.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100424"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supercapacitors: Shaping the future energy storage landscape for flexible, implantable and wearable electronic devices 超级电容器：塑造柔性、可植入和可穿戴电子设备的未来储能格局

Science Talks Pub Date : 2025-03-01 Epub Date: 2024-11-28 DOI: 10.1016/j.sctalk.2024.100411

Qaisar Abbas , Des Gibson , Rizwan Raza , Abdul Ghani Olabi

{"title":"Supercapacitors: Shaping the future energy storage landscape for flexible, implantable and wearable electronic devices","authors":"Qaisar Abbas , Des Gibson , Rizwan Raza , Abdul Ghani Olabi","doi":"10.1016/j.sctalk.2024.100411","DOIUrl":"10.1016/j.sctalk.2024.100411","url":null,"abstract":"<div><div>Recent innovations in the fields of nanotechnology have resulted in the development and widespread applications of flexible, implantable and wearable electronic devices (FIWEDs). Almost all of these miniaturised devices are powered by lithium-ion batteries which are bulky in nature and present an immense challenge towards miniaturization, safety, environmental sustainability and extension in lifespan. Therefore, it is of paramount importance to explore new materials and design strategies for taking on the challenging task of designing next generation of energy storage devices. Supercapacitors (SCs) also known as ultracapacitors have gained enhanced attention from scientific communities due to their superior and promising features such as cost-effectiveness, non-toxic nature, extended lifespan, low maintenance and high-power capabilities when compared with rechargeable batteries. These highly suitable characteristics can translate into further extension in applications of SCs in above mentioned areas. During this study, fundamentals of SCs including working principle, electrodes, electrolytes and cell designs have been discussed. Furthermore, advancements of flexible, implantable and wearable electronic devices coupled with the new challenges they face in terms of fulfilling their energy demands to further accelerate their progress has also been reviewed. Finally, suitability of SCs as energy storage devices of choice for FIWEDs has been covered systematically.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100411"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Eco-innovativebreak through: Tamarindshell-derived silver nanoparticlesforadvancedwastewaterbacterialpurification 生态创新突破：罗望子壳衍生的纳米银粒子用于污水的高级细菌净化

Science Talks Pub Date : 2025-03-01 Epub Date: 2024-12-31 DOI: 10.1016/j.sctalk.2024.100417

Alaknanda J. Adur , Shilpashree Mayachar , N. Nandhini , Manjushree Mahadeva , Raajasubramanian Devarajan , Ramu Loganathan , Narendra Kuppan

{"title":"Eco-innovativebreak through: Tamarindshell-derived silver nanoparticlesforadvancedwastewaterbacterialpurification","authors":"Alaknanda J. Adur , Shilpashree Mayachar , N. Nandhini , Manjushree Mahadeva , Raajasubramanian Devarajan , Ramu Loganathan , Narendra Kuppan","doi":"10.1016/j.sctalk.2024.100417","DOIUrl":"10.1016/j.sctalk.2024.100417","url":null,"abstract":"<div><div>Access to clean drinking water remains a critical global issue, with over one billion people lacking reliable sources, as highlighted by the World Health Organization in 2005. Bacterial contamination, which leads to severe diseases like cholera and typhoid, exacerbates this challenge. Recent advancements in nanotechnology, particularly the use of silver nanoparticles (AgNPs) in water purification, offer promising solutions due to their potent antibacterial properties. This study explores the green synthesis of AgNPs utilizing tamarind shell extract as both a reducing and capping agent. The synthesized AgNPs were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), UV–Visible spectroscopy (UV–Vis), and transmission electron microscopy (TEM), revealing a crystalline structure with particle sizes ranging from 10 to 100 nm. To enhance antibacterial efficacy, these AgNPs were integrated with activated carbon, forming a composite material. This composite achieved a 90 % reduction in microbial load during wastewater treatment, effectively mitigating foul odors and discoloration. Our results demonstrate that the integration of AgNPs with activated carbon not only addresses the limitations of conventional water purification methods but also offers a cost-effective and efficient approach to bacterial contamination control. This research highlights the potential of green-synthesized AgNPs as a sustainable solution for water and wastewater management, with broader implications for public health and environmental safety.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100417"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Learning context invariant representations for EEG data 脑电数据的上下文不变表示学习

Science Talks Pub Date : 2025-03-01 Epub Date: 2025-01-27 DOI: 10.1016/j.sctalk.2025.100422

Thibault de Surrel

{"title":"Learning context invariant representations for EEG data","authors":"Thibault de Surrel","doi":"10.1016/j.sctalk.2025.100422","DOIUrl":"10.1016/j.sctalk.2025.100422","url":null,"abstract":"<div><div>The goal of Brain-Computer Interfaces is to translate a user's brain activity into commands. To achieve this, the subject is equipped with sensors on their scalp that each record the electrical signals from a certain area of their brain using Electroencephalography (EEG). This EEG is a multivariate 0me series that contains very high-dimensional informa0on about brain activity. Unfortunately, EEGs are subject to a lot of variability, making it difficult to build a universal BCI. The goal of my PhD is to understand and tackle these variabilities. The most used representation of an EEG is its covariance matrix. As these matrices are symmetric positive definite (SPD), they live on a manifold that can be endowed with a Riemannian structure. This structure helps us better understand the intrinsic connections between the different SPD matrices in play. In my research, I am trying to build a probabilistic framework on the manifold of SPD matrices. The goal is to define and study a probability distribution that takes into account the Riemannian geometry of SPD matrices. Then, I could model a set of SPD matrices using this probability distribution and better understand how variabilities affect the covariance matrices derived from a BCI experiment.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100422"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bringing Motor Imagery BCI systems outside of the laboratory into daily activities 将运动意象BCI系统带入实验室之外的日常活动中

Science Talks Pub Date : 2025-03-01 Epub Date: 2025-01-17 DOI: 10.1016/j.sctalk.2025.100420

Sonal Santosh Baberwal, Shirley Coyle

{"title":"Bringing Motor Imagery BCI systems outside of the laboratory into daily activities","authors":"Sonal Santosh Baberwal, Shirley Coyle","doi":"10.1016/j.sctalk.2025.100420","DOIUrl":"10.1016/j.sctalk.2025.100420","url":null,"abstract":"<div><div>Motor Imagery Brain-Computer Interfaces(MI-BCIs) transform imagined movements into actionable control signals, enabling applications such as wheelchair navigation and robotic device operation. By leveraging the brain's ability to generate neural activity similar to actual movement during imagination, MI-BCIs hold great promise for assisting individuals with mobility impairments or neuromuscular disorders, such as spinal cord injuries. Despite decades of research, these systems remain confined to controlled laboratory environments due to technological, usability, and environmental challenges. This research aims to bridge the gap between laboratory and real-world applications by addressing key challenges at every stage, across the MI-BCI pipeline. Enhanced training methods using Virtual Reality(VR) were shown to significantly improve signal quality, as demonstrated in a study involving 21 participants. To simplify system setups, novel channel reduction techniques based on Fisher's ratio and Pearson's correlation identified optimal features, enabling reliable single-channel classification. Furthermore, integrating soft robotics as intuitive control interfaces for performing daily activities, such as pressing spray buttons, exemplifies potential for seamless human-machine interaction. By advancing training protocols, reducing complexity, and enhancing usability, this work brings MI-BCIs closer to real-world applications. These efforts aim to unlock MI-BCIs' transformative potential, empowering individuals with impaired mobility to regain independence and improve quality of life.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100420"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Social, ecological and governance perspectives of small-scale fisheries wellbeing in marine protected areas of Malaysia 马来西亚海洋保护区小规模渔业福利的社会、生态和治理观点

Science Talks Pub Date : 2025-03-01 Epub Date: 2024-12-12 DOI: 10.1016/j.sctalk.2024.100415

Gazi Md Nurul Islam , Prateep Kumar Nayak

{"title":"Social, ecological and governance perspectives of small-scale fisheries wellbeing in marine protected areas of Malaysia","authors":"Gazi Md Nurul Islam , Prateep Kumar Nayak","doi":"10.1016/j.sctalk.2024.100415","DOIUrl":"10.1016/j.sctalk.2024.100415","url":null,"abstract":"<div><div>The government of Malaysia has established several marine protected areas (MPAs) in the east coast of Peninsular Malaysia since 1980s to protect overexploited fisheries resources and coral reefs habitat. Tourism industry generates substantial revenue from the islands in Malaysia. The “no take” MPAs are restricted for fishing activities. The main challenge is to how overexploited marine resources can be protected and restored for sustainable use. Several studies demonstrate that coral reefs and fisheries in MPA suffer from natural and anthropogenic disturbances mainly caused by increased tourism activities. This study examines how social and ecological factors are influenced by governance of MPA. The data for this study was obtained from face-to-face interviews with local people from two islands using a structured questionnaire. The results show that the governance factors contributed significantly to the ecological conditions of MPAs, indicating that governance factors play very important roles for enhancing coral health and fisheries resources. Local stakeholders' participation and cooperation could effectively protect the coral reef habitat for sustaining livelihoods of local people in the islands in Malaysia.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100415"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating livelihood resilience in the Qinghai-Tibet Plateau's pastoral communities: Insights from an entropy-TOPSIS and geospatial analysis approach 青藏高原牧区生计恢复力评价：基于熵- topsis和地理空间分析方法的见解

Science Talks Pub Date : 2025-03-01 Epub Date: 2025-01-03 DOI: 10.1016/j.sctalk.2024.100416

Tong Li , Lizhen Cui , Zhihong Xu , Xiaoyong Cui , Yanfen Wang

{"title":"Evaluating livelihood resilience in the Qinghai-Tibet Plateau's pastoral communities: Insights from an entropy-TOPSIS and geospatial analysis approach","authors":"Tong Li , Lizhen Cui , Zhihong Xu , Xiaoyong Cui , Yanfen Wang","doi":"10.1016/j.sctalk.2024.100416","DOIUrl":"10.1016/j.sctalk.2024.100416","url":null,"abstract":"<div><div>To address the gap in evaluating herders' livelihood resilience with a comprehensive methodology, this research harnessed survey data from 758 pastoralists within the Three River Headwater Region (TRHR) on the Qinghai-Tibet Plateau (QTP). Augmented by focus group discussions and transect walks, we pioneered a livelihood resilience evaluation index that integrates key dimensions of buffer capacity, self-organization, and learning capacity, offering a holistic view of resilience factors. At the heart of our analytical approach is the entropy-TOPSIS method, utilized to dissect the livelihood resilience and sustainability of local herders, revealing intricate spatial resilience patterns through spatial autocorrelation analysis. This nuanced application allows for a detailed mapping of resilience across the TRHR, highlighting variances and spatial trends. Our findings illustrate a spectrum of resilience levels, with the Yellow River headwater area displaying a relative resilience zenith, indicated by a score of 0.931 in Zeku County, and a contrasting low in Yushu County with a resilience score of 0.532. This delineates a clear “high in the east and low in the west” resilience gradient across the counties, underpinned by significant differences in self-organization, buffer, and learning capacities among the pastoral communities. Employing a methodological framework that blends empirical data with advanced analytical tools like entropy-TOPSIS and spatial autocorrelation, this study not only unveils the layered resilience landscape within the TRHR but also contributes a methodological blueprint for future resilience assessments in similar pastoral ecosystems.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100416"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flavourful insights into the saltiness perception of samphire 对海参咸味感知的美味洞察

Science Talks Pub Date : 2025-03-01 Epub Date: 2025-01-23 DOI: 10.1016/j.sctalk.2025.100425

Saumya Sood, Lisa Methven, Qiaofen Cheng

{"title":"Flavourful insights into the saltiness perception of samphire","authors":"Saumya Sood, Lisa Methven, Qiaofen Cheng","doi":"10.1016/j.sctalk.2025.100425","DOIUrl":"10.1016/j.sctalk.2025.100425","url":null,"abstract":"<div><div>Samphire has been used as a salt substitute in cooked foods. However, the mechanism of its saltiness perception has not been fully understood. This study aimed to investigate whether saltiness could be induced either as a direct contribution from the volatiles within samphire or through involvement in Maillard reaction during cooking.</div><div>Odour profiling of samphire extracts revealed aromas such as seaweed, grassy green and tomato vine, relating to around 80 volatile compounds. However, these volatiles did not significantly enhance saltiness. Samphire extracts were incorporated into nachos at an equivalent sodium content to a control (with added NaCl) to investigate its contribution to saltiness perception through Maillard reaction. Sensory profiling revealed that samphire nachos were significantly saltier than control, alongside stronger umami taste and a distinctive green vegetable flavour. The Strecker aldehydes and the pyrazines were substantially and significantly higher in the samphire nachos than these in control. Pyrazines like 2,6-dimethylpyrazine, 2,3-dimethylpyrazine and 2-ethyl-5-methylpyrazines have previously been reported associated with enhancing salty taste. In conclusion, these Maillard derived compounds resulting from samphire addition may contribute to the increased saltiness of samphire nachos, supporting samphire extracts to be used as a combined salt substitute and flavour enhancer in heat-treated food products.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100425"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determining sensory drivers of complex metadescriptors through regression modelling 通过回归模型确定复杂元描述符的感官驱动因素

Science Talks Pub Date : 2025-03-01 Epub Date: 2025-01-23 DOI: 10.1016/j.sctalk.2025.100423

Emily Fisher , Charles Diako , Rebecca Shingleton , Sidsel Jensen , Joanne Hort

{"title":"Determining sensory drivers of complex metadescriptors through regression modelling","authors":"Emily Fisher , Charles Diako , Rebecca Shingleton , Sidsel Jensen , Joanne Hort","doi":"10.1016/j.sctalk.2025.100423","DOIUrl":"10.1016/j.sctalk.2025.100423","url":null,"abstract":"<div><div>In sensory science, terms such as creaminess often lack precise definitions due to their multi-modal nature. Least absolute shrinkage and selection operator (LASSO), a regression technique known for automatic predictor selection, and partial least squares regression, which handles multicollinearity, were compared for their ability to accurately identify the underlying sensory attributes driving creaminess perception.</div><div>Twenty-eight sensory attributes were selected after discussions with milk consumers. Thirty-two milk samples were chosen to represent these attributes, spanning a wide range of creaminess. Quantitative descriptive analysis, with trained panellists, and a consumer study (<em>n</em> = 117 New Zealand milk drinkers) assessed the sensory attributes and creaminess ratings, respectively. LASSO and PLSR were compared for their predictive ability and attributes retained using sensory attributes (trained panel) as predictors and creaminess ratings (consumers) as the response variable.</div><div>LASSO identified four key sensory attributes with a good model fit (R<sup>2</sup> = 0.951), while PLSR suggested thirteen (R<sup>2</sup> = 0.933). LASSO is effective in uncovering pertinent attributes within a complex sensory experience enabling cost-effective research. PLSR offers a comprehensive model for extensive product development. This research provides an alternative approach for determining pertinent attributes in complex metadesciptors. Resulting models offer clearer targets for product development, thus increased commercial gains.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100423"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143204330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Subjective-objective method of maximizing extracted variance (Sommev) from governance sub-indicators: Understanding the governance of countries from an integrated and impartial perspective 从治理子指标中提取方差（Sommev）最大化的主客观方法：从综合和公正的角度理解国家治理

Science Talks Pub Date : 2025-03-01 Epub Date: 2025-01-31 DOI: 10.1016/j.sctalk.2025.100431

Angélica C.G. Santos , Marcos F.S.V. D'Angelo , Paulo F.B. Carvalho , Petr I. Ekel , Witold Pedrycz

{"title":"Subjective-objective method of maximizing extracted variance (Sommev) from governance sub-indicators: Understanding the governance of countries from an integrated and impartial perspective","authors":"Angélica C.G. Santos , Marcos F.S.V. D'Angelo , Paulo F.B. Carvalho , Petr I. Ekel , Witold Pedrycz","doi":"10.1016/j.sctalk.2025.100431","DOIUrl":"10.1016/j.sctalk.2025.100431","url":null,"abstract":"<div><div>The construction of governance indicators is a multidimensional construct and faces questions regarding the definition of the weights attributed to its dimensions and sub-indicators. This study compares three existing methods of constructing composite indicators with the Subjective–objective method of maximizing extracted variance (Sommev). The Sommev method establishes weights for composite indicator components considering the subjectivity of the experts' opinion and the objectivity portrayed by the information collected for each sub-indicator. To evaluate the quality of the results generated, it is proposed to verify the average variance extracted, degree of consensus and connection with the external variable. As an example, was constructed governance indicator considering 20 countries with the largest economies in the world. The governance sub-indicators used the components of the Worldwide Governance Indicators (WGI). The GDP per capita was defined as an external variable. It uses World Bank database for the year 2021. The results indicate that countries developed have the best results for the governance indicator. These results corroborate the importance of verifying failures in governance mechanisms. Identify which dimensions have the greatest influence is important to direct public policies more efficiently to foster economic development. The quality verification indicating the robustness of the results.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"13 ","pages":"Article 100431"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0