Quantum Harmonic Oscillators with Nonlinear Effective Masses in the weak density approximation

We study the eigen-energy and eigen-function of a quantum particle acquiring the probability density-dependent effective mass (DDEM) in harmonic oscillators. Instead of discrete eigen-energies, continuous energy spectra are revealed due to the introduction of a nonlinear effective mass. Analytically, we map this problem into an infinite discrete dynamical system and obtain the stationary solutions in the weak density approximation, along with the proof on the monotonicity in the perturbed eigen-energies. Numerical results not only give agreement to the asymptotic solutions stemmed from the expansion of Hermite-Gaussian functions, but also unveil a family of peakon-like solutions without linear counterparts. As nonlinear Schr ¨odinger wave equation has served as an important model equation in various sub-fields in physics, our proposed generalized quantum harmonic oscillator opens an unexplored area for quantum particles with nonlinear effective masses.

Examining antecedents of residents’ support for the European Capital of Culture project – event’s sustainability perception, emotional solidarity, community attachment and brand trust

PurposeThe primary purpose of this paper is to investigate the effects on support for the European Capital of Culture (ECoC) project development of residents’ perception of the project’s sustainability, emotional solidarity toward tourists, community attachment and brand trust.Design/methodology/approachSurvey research was conducted among 303 residents of Novi Sad, which has been selected to be the ECoC for the year 2022.FindingsThe findings confirmed the positive roles of three aspects of the event’s sustainability and three facets of emotional solidarity in shaping local people’s support for the ECoC event development. Besides, findings show the positive effect of residents’ community attachment and ECoC brand trust in predicting their supportive attitudes for the event development. Finally, results highlight which areas of the event’s sustainability are still unsatisfactory from the residents’ perspective, making it easier for event practitioners to optimally focus their attention and resources on enhancing problematic areas of the event’s sustainability.Originality/valueThe present study contributes to existing tourism literature as it is the first to explore the role local people’s perception of event sustainability, emotional solidarity toward tourists, community attachment and brand trust plays in their support for the ECoC event development. In addition, a unique contribution lies in the confirmation of brand trust as a significant antecedent of residents’ support, as this relationship remained an unexplored area in tourism literature. Practical implications, specifically derived for ECoC event practitioners, which should also find their place in securing residents’ support toward the development of any cultural event that attracts visitors, are discussed in the paper.

Classification and pattern extraction of incidents: a deep learning-based approach

Classifying or predicting occupational incidents using both structured and unstructured (text) data are an unexplored area of research. Unstructured texts, i.e., incident narratives are often unutilized or underutilized. Besides the explicit information, there exist a large amount of hidden information present in a dataset, which cannot be explored by the traditional machine learning (ML) algorithms. There is a scarcity of studies that reveal the use of deep neural networks (DNNs) in the domain of incident prediction, and its parameter optimization for achieving better prediction power. To address these issues, initially, key terms are extracted from the unstructured texts using LDA-based topic modeling. Then, these key terms are added with the predictor categories to form the feature vector, which is further processed for noise reduction and fed to the adaptive moment estimation (ADAM)-based DNN (i.e., ADNN) for classification, as ADAM is superior to GD, SGD, and RMSProp. To evaluate the effectiveness of our proposed method, a comparative study has been conducted using some state-of-the-arts on five benchmark datasets. Moreover, a case study of an integrated steel plant in India has been demonstrated for the validation of the proposed model. Experimental results reveal that ADNN produces superior performance than others in terms of accuracy. Therefore, the present study offers a robust methodological guide that enables us to handle the issues of unstructured data and hidden information for developing a predictive model.

The Influence of Silica Nanoparticles Geometry on the Interfacial Interactions of Organic Molecules: A Simulation Perspective

The role of nanoparticle shape in the interaction and adsorption of organic molecules on the particle surface is an unexplored area. On the other hand, such knowledge is not only...

Secondary attack rate among high-risk contacts of COVID-19 paediatric index cases: a study at the beginning of the pandemic in Pune city of Western Maharashtra, India

Background: The COVID-19 was the emerging disease caused by SARS-COV2. Efficient transmission of this disease occurs through droplets and fomites. The susceptibility of children to coronavirus disease-19 (COVID-19) and transmission of COVID-19 from children to others is a relatively unexplored area. The aim of this study was to understand the transmission dynamics of severe acute respiratory syndrome coronavirus 2 in children. Study objectives were to estimate secondary attack rate of COVID-19 from paediatric index case during the early phase of pandemic in Pune city and to identify factors associated with transmission and development of the COVID-19 disease.Methods: This was a retrospective cohort study conducted in the month of June 2020. The sample includes 58 contacts of 11 laboratory confirmed pediatric index cases of COVID-19 from Pune municipal corporation after written informed consent. A confidential telephonic interview of parents was taken by using a prestructured questionnaire which includes socio-demographic data, family background, type of house, development of symptoms, outcome etc.Results: The mean age of primary pediatric case was 12.7±5.1 years. All of them were symptomatic. The SAR estimated was 55.2%. The factors significantly affecting SAR were comorbidity, no. of family members, type of family, overcrowding, no. of rooms, bedroom attached with toilet.Conclusions: The household SAR from paediatric patients is high and is closely associated with family size and other household characteristics. Hence, home quarantine should be advocated in smaller families with appropriate isolation facilities; more emphasis is given to co-morbid individuals.

Exposition, Societal Responsitivity and the Aesthetics of Impermanence: Temporal Findings from the 1970 World Exhibition

<p>The architecture of the world expositions maintains an historically unique position within the built environment. Raised specifically for the hosting of these temporary events, the architecture and design of the exposition grounds have been viewed in this thesis as a means to present the aspirations of a country. Expositions were also physical manifestations of the development of new tools, materials, techniques, or aesthetics, ushering in notions of change and progress. However, exhibition architecture can similarly be interpreted as a vehicle responding to the changing pressures within a society. Both historical and contemporary reports locate the world expositions as highly anticipated for education, communication, enjoyment and even competition. Parallel to this, the international expositions have existed as an area of well resourced critical research. With over 150 years of exposition, the historical, political, social, urban and architectural aspects of these events have been increasingly explored as locations to identify and define avantgarde and progressive explorations in the moderation of space. In contrast to this, the world exposition of 1970 exists as a comparatively unexplored area of`study in the West. Expo’70, located in Osaka, Japan, was poorly received and heavily criticised in Western media sources. Academics, architects and critics slated the event as bizarre, ridiculous, and excessive, and one source even noted that Expo’70 had “brought about the end of the world fairs”. While perhaps some of these comments can be attributed to remoteness, and vastly unknown sensory experiences that many non-Japanese visitors would be exposed too, a difficulty in accessing first hand accounts from the Japanese themselves may also account for a lack of understanding within Western architectural discourse. However, Expo’70 was, and still is, an important phenomenon in its native land. A search using Japanese language through any Japanese university library will return a vast collection of titles covering areas such as social science, politics, technology, and architecture. In response to these findings, this thesis locates the importance of the event to the Japanese as a whole. I propose that Expo’70 manifested a number of qualities or conditions that the Japanese society could locate within their existing aesthetic vocabularies, which are discussed and displayed in this thesis through both drawing and text. Within this context the drawn material operates an important strategy as both a mechanism of display and a means to explore the shifting and transitory spatial qualities that are discussed within the text. Rather than a turning point, the thesis argues that, Expo’70 existed as a form of vantage for Japanese society to observe the unfolding changes within their society, both material and immaterial.</p>

Exposition, Societal Responsitivity and the Aesthetics of Impermanence: Temporal Findings from the 1970 World Exhibition

<p>The architecture of the world expositions maintains an historically unique position within the built environment. Raised specifically for the hosting of these temporary events, the architecture and design of the exposition grounds have been viewed in this thesis as a means to present the aspirations of a country. Expositions were also physical manifestations of the development of new tools, materials, techniques, or aesthetics, ushering in notions of change and progress. However, exhibition architecture can similarly be interpreted as a vehicle responding to the changing pressures within a society. Both historical and contemporary reports locate the world expositions as highly anticipated for education, communication, enjoyment and even competition. Parallel to this, the international expositions have existed as an area of well resourced critical research. With over 150 years of exposition, the historical, political, social, urban and architectural aspects of these events have been increasingly explored as locations to identify and define avantgarde and progressive explorations in the moderation of space. In contrast to this, the world exposition of 1970 exists as a comparatively unexplored area of`study in the West. Expo’70, located in Osaka, Japan, was poorly received and heavily criticised in Western media sources. Academics, architects and critics slated the event as bizarre, ridiculous, and excessive, and one source even noted that Expo’70 had “brought about the end of the world fairs”. While perhaps some of these comments can be attributed to remoteness, and vastly unknown sensory experiences that many non-Japanese visitors would be exposed too, a difficulty in accessing first hand accounts from the Japanese themselves may also account for a lack of understanding within Western architectural discourse. However, Expo’70 was, and still is, an important phenomenon in its native land. A search using Japanese language through any Japanese university library will return a vast collection of titles covering areas such as social science, politics, technology, and architecture. In response to these findings, this thesis locates the importance of the event to the Japanese as a whole. I propose that Expo’70 manifested a number of qualities or conditions that the Japanese society could locate within their existing aesthetic vocabularies, which are discussed and displayed in this thesis through both drawing and text. Within this context the drawn material operates an important strategy as both a mechanism of display and a means to explore the shifting and transitory spatial qualities that are discussed within the text. Rather than a turning point, the thesis argues that, Expo’70 existed as a form of vantage for Japanese society to observe the unfolding changes within their society, both material and immaterial.</p>

“Things change you know”: Schools as the Architects of the Mexican Race in Depression-Era Wyoming

This article examines the development of racially segregated Mexican rooms and Mexican schools in Wyoming during the Depression era. Working in concert with New Deal legislation, the segregation of Mexican children—regardless of US citizenship—in Wyoming was not just a matter of social practice and local custom, it became an expression of increased state and federal power that mirrored Jim Crow laws. Wyoming was not alone. The segregation of Mexicans also occurred in neighboring Colorado, Montana, and Nebraska. This article also discusses how, ultimately, public schools and schooling finalized the codification and institutionalization of Mexicans as a race of their own. In Wyoming, schools were the architects of the Mexican race. Furthermore, this unexplored area demonstrates that the segregation of Mexican children was not just a Southwest phenomenon but encompassed almost all of the US West.

The Relationship between Employer Branding and Talent Management: A Study on Manufacturing Sector

Talent management is a common attraction and retention technique for talented workers in the current business scenario. Still, talent management contributes to the more significant appeal, and retention of employees is an unexplored area in the manufacturing industry. In Malaysia, employer branding is gaining significance. While the idea of the Employer brand has become a routine for companies, several researchers have recently attracted the attention of this field. Developing, recruiting, and keeping workers is a great challenge for every company. The purpose of this study is to explore the relationship between positions in employer branding and talent management. The paper aims to analyze the current state of the manufacturing industry in branding roles and assess their effect on talent management. The research seeks to address the employer branding and talent acquisition concept and the company's techniques. As a result, this study aims to look into the functions of employer branding in fostering employee talent management. For a better understanding of the relationship, this research proposes a conceptual model. This research is then evolved into a concrete study hypothesis for future investigations. The goal is that the researcher's findings will reveal a substantial link between employer branding positions and talent management. For relevant practitioners and new researchers, this study will be a possible eye-opener.

COVID-19 Impact on Socioeconomic in the Hospitality Industry

Objective - This paper provides an overview of the COVID-19 crisis and the impact of restriction orders on the hospitality industry in Malaysia. The authors review existing studies related to COVID-19 and the hospitality industry while focusing on challenges faced by the hospitality industry in Malaysia. Then, the authors summarize the socioeconomic impact of COVID-19 on the hospitality industry. Methodology/Technique - This paper examines previous COVID-19 related research published in top-tier hospitality journals during the pandemic period of December 2019 to September 2021. Research studies were categorized by topic area, hospitality industry segment, and research methods used. Additionally, the authors explored the socioeconomic impact of the COVID-19 on hospitality industry using content analysis. Findings - Most articles focused on administration/strategy, marketing, and human resources. The findings showed some potential shifts in the methods used by researchers who published during the pandemic. The findings revealed that the pandemic has negatively impacted the socioeconomic situation in many countries. Employment, public safety, finance, and physical and mental health are among the pressing issues highlighted by most researchers. Based on the findings, the authors provide insights and recommendations for further research. Novelty - This paper represents a pioneering attempt to identify a potentially unexplored area of research related to COVID-19, particularly in Malaysia. The novelty of this paper is that the authors provide substantial discussion on the socioeconomic impact of the COVID-19 on various countries' hospitality and tourism industries. Type of Paper - Empirical. Keywords: Foodservice; Hospitality; Hotel; Malaysia; Pandemic; Socioeconomic impact; Tourism. JEL Classification: Z30