Trends, Challenges and Opportunities at University of Manitoba Libraries during the COVID Pandemic

The COVID-19 pandemic brought rapid and radical changes to higher education, and academic libraries adapted and devised solutions.  This article will review the initiatives that the University of Manitoba Libraries (UML) implemented prior to the pandemic, as well as the library’s response, focusing on the performance of these initiatives in the past two years. These initiatives are new service models including a fully virtual library, new technologies, such as self-service lockers, and structural reorganization, for example, the creation of functional teams. The review will demonstrate how the above initiatives ensured the continuity of library services during the pandemic. The pandemic is viewed as a touchstone that tested the trends of the academic library community in an extreme situation. The success of the library services provided by the UML inspires positive thinking about the forward direction for public research university libraries

A Mathematical Analysis on the Transmission Dynamics of Neisseria gonorrhoeae

In this project, we analyze an epidemiological model describing the transmission of gonorrhea. We address two stratifications: one based on age groups and one based on education levels, each with a core sexual activity class and two noncore sexual activity classes. Using parameters based on sexual behavior in the United States, we address the impact of the average number of partners per year for each sexual activity class on the behavior of the model around two equilibrium points: a disease-free equilibrium and an endemic equilibrium. The focus of the project is to identify the conditions leading to the existence of each of the equilibrium points, analyze the stability of these points, and discuss the results. Ultimately, the goal of the project is to find conditions for the bifurcation of the two equilibrium points, in order to find the conditions resulting in the eradication of gonorrhea

Risk Diversification In World Stock Markets

The benefit of risk diversification refers to the reduction in the portfolio risk when different stocks are combined into a portfolio. This risk reduction benefit exists because not all stocks are moving together through time; this is presumably true for stocks from different countries. The smaller the degree of co-movements in the world stock markets (i.e., the less the correlation between the markets), the greater is the risk reduction effect. Thus, it makes sense for a US investor to invest globally as long as the foreign stock markets are not highly correlated with the U.S. market. Nevertheless, recent evidence shows that the correlations between the U.S. and various foreign stock markets are evolving through time due to the integration of world capital markets and international capital flows. Now that we witness the increased interdependence of the world stock markets, does it still make sense to diversify globally? In this paper, we address the question of global risk diversification from the US perspective

Asian American Coping Attitudes, sources, and Practices: Implications for Indigenous Counseling Strategies

Coping attitudes, sources, and practices were assessed within and across a sample of Asian American college and graduate students from four ethnic groups: Chinese, Korean, Filipino, and Indian (N = 470). We found that Asian Americans tended to endorse coping sources and practices that emphasized talking with familial and social relations rather than professionals such as counselors and doctors. Korean Americans were significantly more likely to cope with problems by engaging in religious activities. Counseling implications are discussed

Discovery of Resolved Debris Disk Around HD 131835

We report the discovery of the resolved disk around HD 131835 and present the analysis and modeling of its thermal emission. HD 131835 is a ~15 Myr A2 star in the Scorpius-Centaurus OB association at a distance of 122.7 +16.2 -12.8 parsec. The extended disk has been detected to ~1.5" (200 AU) at 11.7 {\mu}m and 18.3 {\mu}m with T-ReCS on Gemini South. The disk is inclined at an angle of ~75{\deg} with the position angle of ~61{\deg}. The flux of HD 131835 system is 49.3+-7.6 mJy and 84+-45 mJy at 11.7 {\mu}m and 18.3 {\mu}m respectively. A model with three grain populations gives a satisfactory fit to both the spectral energy distribution and the images simultaneously. This best-fit model is composed of a hot continuous power-law disk and two rings. We characterized the grain temperature profile and found that the grains in all three populations are emitting at temperatures higher than blackbodies. In particular, the grains in the continuous disk are unusually warm; even when considering small graphite particles as the composition.Comment: 11 pages, 5 figures, Accepted for Publication in Ap

Sensitivity of GNSS-R spaceborne observations to soil moisture and vegetation

Global navigation satellite systems-reflectometry (GNSS-R) is an emerging remote sensing technique that makes use of navigation signals as signals of opportunity in a multistatic radar configuration, with as many transmitters as navigation satellites are in view. GNSS-R sensitivity to soil moisture has already been proven from ground-based and airborne experiments, but studies using space-borne data are still preliminary due to the limited amount of data, collocation, footprint heterogeneity, etc. This study presents a sensitivity study of TechDemoSat-1 GNSS-R data to soil moisture over different types of surfaces (i.e., vegetation covers) and for a wide range of soil moisture and normalized difference vegetation index (NDVI) values. Despite the scattering in the data, which can be largely attributed to the delay-Doppler maps peak variance, the temporal and spatial (footprint size) collocation mismatch with the SMOS soil moisture, and MODIS NDVI vegetation data, and land use data, experimental results for low NDVI values show a large sensitivity to soil moisture and a relatively good Pearson correlation coefficient. As the vegetation cover increases (NDVI increases) the reflectivity, the sensitivity to soil moisture and the Pearson correlation coefficient decreases, but it is still significant.Postprint (author's final draft

Education for profit in the era of Xi: Biopower, resistance and China’s double reduction policy

This study aims to advance the understanding of for-profit Chinese education during the tenure of Chairman Xi Jinping. Notably, Xi has recently targeted the privately operated, for-profit before-and-after school supplementary tutoring industry, commonly referred to as “Shadow Education”. In 2021, the introduction of the Double Reduction policy abruptly prohibited most SE businesses. Our research seeks to elucidate the impacts of this sudden policy shift on Chinese parents’ perceptions and decision-making regarding their children’s education and supplementary learning opportunities. Conducted in 2022 across mainland China, our study engaged 195 parents through an online survey followed by two focus group interviews. The investigation was driven by the primary research question: How did Chinese parents, whose children previously participated in SE, respond to the 2021 Double Reduction policy? The analysis is framed with Foucault’s theory of biopower, which envisions power as permeating all spheres of human life. This theoretical framework is particularly relevant as Chinese education under Xi Jinping’s government is increasingly exemplifies the pervasive influence of biopolitics across all facets of society and learning. We aim to address a critical gap in the study of Chinese education, focusing on the intricate interplay of policy analysis amidst broader social and economic forces

Assessing the language skills of children from culturally and linguistically diverse backgrounds: The expressive vocabulary performance of Singaporean English-Mandarin bilingual preschoolers

Standardized language assessments such as the Clinical Evaluation of Language Fundamentals Pre-school 2 United Kingdom (CELF Preschool 2 UK) are often used in speech-language pathology clinics to determine if a child is at risk of language difficulties. Many of these assessments are designed and standardized for use with monolingual Standard English-speaking children. It is thus recommended that these assessments should only be used with the populations they were designed for; if not test bias might result. However, such tests are still selected and used in the clinics of many multicultural and multilinguistic communities (e.g., Singapore). This research aimed to explore the performance of 79 Singaporean English-Mandarin pre-school children on the Expressive Vocabulary (EV) sub-test of the CELF Preschool 2 UK and to determine if their performance on the EV sub-test accurately reflected their language abilities by comparing their performance on a local screening language assessment tool, the Singapore English Action Picture Test (SEAPT). Results showed that local children performed poorly as compared to their UK counterparts. Two plausible reasons for the findings are: (1) the sub-test elicited only a single measure in English which ignored the language abilities of these bilingual children in their second language; and (2) the presence of culturally and linguistically biased test items

A preliminary report on the English phonology of typically developing English-Mandarin bilingual preschool Singaporean children

Background: There are no published data on typical phonological development for Singaporean children. There is therefore the risk that children's speech in Singapore may be misdiagnosed or that clinicians may set goals erroneously. Aims This paper reports a preliminary study on the English phonology of typically developing 4;0–4;5-year-old Chinese Singaporean children who speak English and Mandarin. Method & Procedures Seventy children were recruited throughout Singapore, and speech samples were collected in English using the Phonology Assessment of the Diagnostic Evaluation of Articulation and Phonology (DEAP). The participants were divided equally into two groups: English-dominant and Mandarin-dominant. Their speech samples were compared with British English targets (BT) and Singapore English targets (ST) in terms of phonological accuracy and types of phonological processes used. Outcomes & Results The results showed that Singaporean children's phonological accuracy scores increased significantly when scored against ST instead of BT. When scored against ST, English-dominant children were found to perform similarly to their DEAP counterparts. However, Mandarin-dominant children had significantly less accurate consonant production in English and exhibited more interference effects from Mandarin phonology than English-dominant children. Conclusions & Implications In this preliminary study, the results highlight the importance of speech and language therapists using local dialect pronunciations to be the target of speech assessments so as to provide appropriate assessment and intervention. It is also essential to account for the language background and language dominance of the children. More local normative data are needed for the typical acquisition of Singapore English in children, especially for children whose dominant language is not English

Neural-Shadow Quantum State Tomography

Quantum state tomography (QST) is the art of reconstructing an unknown quantum state through measurements. It is a key primitive for developing quantum technologies. Neural network quantum state tomography (NNQST), which aims to reconstruct the quantum state via a neural network ansatz, is often implemented via a basis-dependent cross-entropy loss function. State-of-the-art implementations of NNQST are often restricted to characterizing a particular subclass of states, to avoid an exponential growth in the number of required measurement settings. To provide a more broadly applicable method for efficient state reconstruction, we present "neural-shadow quantum state tomography" (NSQST)-an alternative neural network-based QST protocol that uses infidelity as the loss function. The infidelity is estimated using the classical shadows of the target state. Infidelity is a natural choice for training loss, benefiting from the proven measurement sample efficiency of the classical shadow formalism. Furthermore, NSQST is robust against various types of noise without any error mitigation. We numerically demonstrate the advantage of NSQST over NNQST at learning the relative phases of three target quantum states of practical interest. NSQST greatly extends the practical reach of NNQST and provides a novel route to effective quantum state tomography