This study examines whether the Hong Kong stock market overreacts. By using monthly return data of all the common stocks listed on the Hong Kong Stock Exchange from January 1980…
Abstract
This study examines whether the Hong Kong stock market overreacts. By using monthly return data of all the common stocks listed on the Hong Kong Stock Exchange from January 1980 to December 1995, it examines the profitability of a contrarian strategy of buying prior losers and selling prior winners. The evidence shows that prior losers outperform prior winners by up to 68.59% in the subsequent five‐year test period. This finding can be interpreted as investors' tendency to react over‐optimistically to positive information and over‐pessimistically to negative information, thus causing stock prices to take temporary swing away from their intrinsic values and then reverse back subsequently. Our result is consistent with that documented by Debondt and Thaler (1985) for the U.S. market. This study also investigates whether seasonality accounts for the abnormal return but finds that the overreaction effect is not caused by the well‐known January effect. Further tests are conducted to investigate whether changes in betas of the winners and losers account for the abnormal return. The evidence shows that such changes are also minor, which cannot explain the price reversal phenomenon.
Gus Guanrong Liu, Pierre Benckendorff and Gabby Walters
This paper aims to synthesize the evolving research of human–robot interaction (HRI) in the hospitality and tourism industry, identifying gaps and setting directions for future…
Abstract
Purpose
This paper aims to synthesize the evolving research of human–robot interaction (HRI) in the hospitality and tourism industry, identifying gaps and setting directions for future research.
Design/methodology/approach
Using a mixed-method approach, the study combines inductive co-citation analysis with deductive theory-context-characteristics-methodology analysis.
Findings
The findings trace the progression of HRI knowledge from initial feasibility and acceptance studies to advanced post-adoption experience management. The analysis identifies prevalent theories such as anthropomorphism theory, specific contexts like hotel environments, diverse robot types (e.g. embodied robots), outcome measures (e.g. use intention) and methodologies predominantly comprising survey-based analyses and experimental approaches. The analysis not only illuminates areas of research attention but also uncovers under-explored topics, offering a roadmap for future inquiry in tourism and HRI research.
Originality/value
The paper contributes to the literature by providing a structured framework that not only maps the intellectual structure of HRI research in tourism but also proposes a cohesive integration of disparate theories and methodologies, addressing both practical and academic gaps.
目的
本研究旨在综合分析和综述酒店和旅游行业中的人机交互 (HRI) 研究现状, 以识别当前的知识空白并为未来研究指明方向。
设计/方法/途径
本文采用了结合归纳推理的共引分析和演绎推理的理论-背景-特征-方法论 (TCCM) 框架的混合方法进行分析。
研究发现
研究结果追踪了人机交互研究从初步的可行性和接受性分析到高级的采纳后体验管理的知识发展历程。本文识别并分析了广泛被应用的各个学科理论(例如拟人化理论等)、被研究的具体应用场景(例如酒店环境等)、各类机器人(例如具身化机器人等)、多种结果变量(例如使用意图等)以及被使用的方法论(例如基于调查的分析和实验法等)。本研究不仅揭示了当前研究的重点领域, 而且还指出了尚未被充分探索的主题, 从而为未来的旅游人机交互 (HRI) 研究提供了清晰的研究路线。
原创性/价值
通过提供结构化的研究框架, 本文不仅描绘了旅游领域中人机交互研究的知识结构, 还提出了一个整合不同视觉的新研究框架, 以弥合实践与学术之间的差距。
Propósito
Este artículo tiene como objetivo sintetizar la investigación en evolución sobre la interacción humano-robot (HRI) en la industria de la hospitalidad y el turismo, identificando lagunas y estableciendo direcciones para futuras investigaciones.
Diseño/Metodología/Enfoque
Empleando un enfoque de método mixto, el estudio combina un análisis de cocitación inductivo con un análisis deductivo de Teoría-Contexto-Características-Metodología (TCCM).
Hallazgos
Los hallazgos rastrean la progresión del conocimiento sobre HRI desde estudios iniciales de factibilidad y aceptación hasta la gestión avanzada de experiencias posadopción. El análisis identifica teorías prevalentes como la teoría del antropomorfismo, contextos específicos como los entornos hoteleros, tipos diversos de robots (p. ej., robots encarnados), medidas de resultado (p. ej., intención de uso) y metodologías que comprenden predominantemente análisis basados en encuestas y enfoques experimentales. El análisis no solo ilumina áreas de atención investigativa, sino que también descubre temas poco explorados, ofreciendo una hoja de ruta para futuras investigaciones en turismo e HRI.
Originalidad/Valor
El artículo contribuye a la literatura al proporcionar un marco estructurado que no solo mapea la estructura intelectual de la investigación de HRI en turismo, sino que también propone una integración cohesiva de teorías y metodologías dispares, abordando tanto las brechas prácticas como académicas.
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Manjeet Kumar, Priyanka Lather, Li-Yun Fu, Neelam Kumari, Pradeep Kaswan, Li Nianqi and Manjeet Kumari
The purpose of this paper is to investigate the propagation of Rayleigh-type surface wave in a porothermoelastic half-space. This study addresses the impact of surface pores…
Abstract
Purpose
The purpose of this paper is to investigate the propagation of Rayleigh-type surface wave in a porothermoelastic half-space. This study addresses the impact of surface pores characteristics, specific heat, temperature, porosity, wave frequency, types of rock frame and types of pore fluids on the propagation characteristics of Rayleigh-type wave.
Design/methodology/approach
A secular equation is derived, based on the potential functions for both sealed and open surface pores boundary conditions at the stress-free insulated surface of the porothermoelastic medium.
Findings
Propagation characteristics (velocity, attenuation and particle motions) of Rayleigh wave are significantly influenced by boundary conditions (opened or sealed surface pores) and thermal characteristics of materials. Furthermore, the path of particles throughout the propagation of Rayleigh-type waves is identified as elliptical.
Originality/value
A numerical example is considered to examine the effect of thermal characteristics of materials on the existing Rayleigh wave’s propagation characteristics. Graphical analysis is used to evaluate the behavior of particle motion (such as elliptical) at both open and sealed surface of the porothermoelastic medium.
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The purpose of this paper is to understand various organizational and operational impediments to successful built heritage management at a regional level from the perspective of…
Abstract
Purpose
The purpose of this paper is to understand various organizational and operational impediments to successful built heritage management at a regional level from the perspective of stakeholder theory.
Design/methodology/approach
An exploratory study was conducted in Jammu city of India wherein total of 16 interviews using a semi-structured questionnaire were done with officials (N = 6), organization members (N = 7), local organization heads (N = 3) and 30 local residents. Thematic analysis and stakeholder analysis were used to identify themes and examine the relationships between stakeholders.
Findings
Six themes were derived from thematic analysis. The results from stakeholder attribute analysis and studying stakeholder interactions show that lack of trust, skewed power relation and lack of communication among stakeholders are some of the factors that hinder successful heritage management at the Mubarak Mandi heritage complex. The study emphasizes the dimension of “authenticity” be added to existing discourse of heritage management in India ensuring commoditization does not override authenticity and integrity of heritage site.
Originality/value
The results of this study are useful in understanding challenges of heritage management in India at regional level. Using stakeholder analysis the study adds a managerial perspective to the existing heritage management discourse in India by providing empirical insights into developing stakeholder collaboration.
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Manogna R.L. and Aswini Kumar Mishra
Market efficiency leads to transparent and fair price discovery of commodity markets, thus enhancing the value chain for competitive benefit. The purpose of this paper is to…
Abstract
Purpose
Market efficiency leads to transparent and fair price discovery of commodity markets, thus enhancing the value chain for competitive benefit. The purpose of this paper is to investigate the market efficiency of Indian agricultural commodities at spot, futures and mandi markets apart from exploring price risk management in these markets.
Design/methodology/approach
This study uses Johansen co-integration, vector error correction model and granger causality for analyzing market efficiency of the nine most liquid agricultural commodities across three markets, namely, spot, futures and mandi. All these nine commodities are traded on National Commodity and Derivatives Exchange.
Findings
The statistical results indicate price discovery exists in the mandi market and spot market leading to futures prices. Mandi price returns are seen to negatively influence futures returns in the case of cotton seed, guar seed and spot returns in the case of jeera, coriander and chana. For castor seed, the three markets are seen to have no long run relationship. The results of Granger causality reveal short run relationship between all the three markets in the case of soybean seed and coriander. In these commodities, prices in all three markets are capable of predicting the prices in the other markets. For the case of cottonseed, Rape Mustard seed, jeera, guar seed, the results indicate unidirectional causality between the mandi markets and the other two markets.
Research limitations/implications
These results shall facilitate policymakers to explore intervention through integrated agri-platform (IAP) in price discovery and market efficiency.
Practical implications
The results of this study are useful in understanding the price discovery of mandi markets and its role in the spot and futures market. Agricultural commodities price discovery depends upon the integration of all these three markets. Introduction of IAP as described in the paper shall facilitate price risk management apart from improving the efficiency of price discovery.
Originality/value
To the best of the knowledge, this is the first study considering mandi, spot and futures prices in the price discovery process in India. In addition, this study found the role of mandi markets in serving the economic function of price discovery and price risk management. Hence, suggests for policy intervention for Indian agricultural commodities to manage price risk.
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Yashwant Kashyap, Ankit Bansal and Anil K. Sao
The presence of broken clouds leads to frequent fluctuations in direct normal incident solar irradiation as well as diffuse radiation from the sky. This brings a lot of challenge…
Abstract
Purpose
The presence of broken clouds leads to frequent fluctuations in direct normal incident solar irradiation as well as diffuse radiation from the sky. This brings a lot of challenge for grid integration of solar power plants. The paper aims to discuss this issue.
Design/methodology/approach
A new model is presented to nowcast solar radiation by utilizing hourly global horizontal irradiance (GHI) over a large spatial grid. The spatial distribution of the GHI provides information on the presence of a cloud shadow above a given site. This information is extracted with the help of various data processing techniques. The spatial–temporal data analysis is employed to track the extracted cloud shadow image based on a dynamic model. A Kalman filter is applied for the assimilation of data in the tracking of the extracted shadow over a geographical location.
Findings
The proposed model can provide very good forecasting of solar radiation for various time horizons. However, the variation of shadow features between time steps must be included in the dynamic model to forecast accurate GHI values.
Research limitations/implications
In this paper database used is on hourly basis; it can be further improved for the inter-hour level of ground data for more accuracy.
Practical implications
The outcome of this paper would be useful in the field of solar energy application and for weather monitoring purposes.
Originality/value
The forecasted position of the shadow is utilized to prepare and forecast a GHI map for one hour time horizon. Results show that the model can be utilized to forecast solar radiation with accuracy consistent with the contemporary models.
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Triya Tessa Ramburn, Yufei Mandy Wu and Rachel Kronick
Community gardens are increasingly used as interventions during the resettlement of refugees and other migrants. Little is known about how garden programs might support their…
Abstract
Purpose
Community gardens are increasingly used as interventions during the resettlement of refugees and other migrants. Little is known about how garden programs might support their mental health and wellbeing. Given the links between climate change and forced migration, community gardens are especially relevant, as they can also support climate change mitigation. This study aims to document psychosocial outcomes of gardening programs for refugees and migrants, and mechanisms leading to these outcomes.
Design/methodology/approach
The authors searched major databases and the grey literature up to 2021, resulting in the inclusion of 17 peer-reviewed and 4 grey literature articles in a thematic, qualitative analysis.
Findings
Four consistent themes arose from the analysis: community gardening programs promoted continuity and adaptation (81% of articles), social connectedness (81%), overall wellbeing (95%) and a sense of meaning and self-worth (67%). The results suggest that community gardens can strengthen psychosocial pillars that are key to the recovery and resettlement of refugees and migrants. The land-based and social nature of community gardening may enable connections to the land and others, nurture a sense of belonging in the host country and provide a link to the past for those from agricultural backgrounds.
Research limitations/implications
Further participatory action research is needed to develop guidelines for the successful implementation of community gardens by resettlement organisations.
Originality/value
This review indicates that community gardens can be effective psychosocial interventions as part of a network of services supporting the resettlement of refugees and migrants.
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Females with autism spectrum disorder (ASD) may display superficial social skills which may mask their ASD symptomology impacting on the identification of the disorder – known as…
Abstract
Purpose
Females with autism spectrum disorder (ASD) may display superficial social skills which may mask their ASD symptomology impacting on the identification of the disorder – known as the “camouflage” hypothesis. Compared to males with ASD, it is increasingly recognised that females with ASD have a stronger ability to imitate behaviour which is socially acceptable, particularly those females who have higher cognitive abilities (i.e. intelligence considered to be within the normal range) (Ehlers and Gillberg, 1993). The paper aims to discuss this issue.
Design/methodology/approach
This paper will explore the literature on camouflaging or masking behaviour in females with ASD. A systematic PRISMA review was conducted.
Findings
The capacity to “camouflage” social difficulties in social situations is considered to be one of the main features of the female phenotype of ASD (e.g. Kenyon, 2014). Social imitation or camouflaging enables some level of success and coping, which results in some females never receiving a diagnosis of ASD. They typically may not exhibit any observable functional impairments. However, under the surface of the camouflage, females may experience high levels of subjective stress, anxiety and exhaustion and a need to re-charge or recuperate by withdrawing from any social interaction.
Research limitations/implications
There is relatively little understanding and knowledge of the female phenotype of ASD. This lack of understanding and knowledge impacts significantly on the ability to identify females with ASD (Lai et al., 2015; Bargiela et al., 2016), which can have a number of negative consequence (Adamou et al., 2018; National Collaborating Centre for Mental Health (UK), 2012).
Practical implications
There is a need for the development of a camouflaging measure.
Originality/value
There is a real need for further research exploring the positive and negative impact of the phenomenon of “camouflaging”, or “pretending to be normal” in females with ASD.
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Osvaldo Hernández, Leila Regina Durán, Andrés Fresno and María Fernanda Chamorro
In response to the challenges posed by the social environment, numerous individuals with autism use coping strategies, engaging in a phenomenon known as “camouflaging” to mask…
Abstract
Purpose
In response to the challenges posed by the social environment, numerous individuals with autism use coping strategies, engaging in a phenomenon known as “camouflaging” to mask their distinctive traits. Despite the growing attention directed toward this area of study, to date, there are no bibliometric studies delineating the evolution of this research theme. This study aims to analyze scientific research on camouflage and the autistic spectrum published in Web of Science (WoS).
Design/methodology/approach
Articles on camouflage and autism were retrieved from the WoS. The advanced search interface used was “Title, Abstract, Keywords (autistic OR asperger syndrome OR Autism OR ASD AND camouflage OR camouflaging AND Masking).” The analysis and visualization of the selected records and their data were carried out using MS Excel (v16.0) and Biblioshiny (v2.0, R package).
Findings
Following the selection process, a total of 70 articles were included. Notably, the UK emerged as the leading contributor in terms of the number of published articles. Prominent authors in this domain included William Mandy, Laura Hull and Meng-Chuan Lai, who exhibited the highest number of published articles and citations. The Journal of Autism and Developmental Disorders stood out as the most prolific journal. Predominant research themes encompassed camouflage (and its synonyms, masking or compensation), gender differences and mental health.
Originality/value
This study contributes to existing knowledge on this topic, as well as identifying new areas of research related to autism and camouflage. Moreover, it serves as a valuable resource for health-care professionals, including physicians and clinical psychologists, who may seek to augment their understanding and proficiency in the field.
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Celiac disease is an auto-immune disorder that requires strict lifelong adherence to a gluten-free diet. I explore how a celiac diagnosis affects gendered feeding work within…
Abstract
Purpose
Celiac disease is an auto-immune disorder that requires strict lifelong adherence to a gluten-free diet. I explore how a celiac diagnosis affects gendered feeding work within families.
Methodology/approach
This chapter is based on a grounded theory analysis of field research with five celiac support groups and 80 in-depth interviews. I interviewed 15 adult men and 56 adult women with celiac, plus nine additional family members.
Findings
Gendered care work norms place the onus of responsibility for gluten-free feeding work on women, multiplying time spent planning, shopping, and preparing meals. Women employ distinct gendered strategies to accommodate the gluten-free diet. Following a strategy of integration, women tailor family meals to meet other diagnosed family members’ dietary needs and the entire family’s taste preferences. However, when women themselves have celiac, they follow a pattern of deferential subordination, not allowing their own dietary needs to alter family meals. Thus, women continue to prepare family meals as a form of care for others, even when their medical needs justify putting themselves first.
Originality/value
Social support is a key determinant of compliance with necessary lifestyle and dietary changes in chronic illness. However, little research explores the gendered dynamics within families accounting for the link between social support and dietary compliance. I show how gendered care work norms benefit husbands and children with celiac, while simultaneously disadvantaging women with celiac.