Yichi Zhang

ORCID: 0000-0001-5730-9648
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About
Contact & Profiles
Research Areas
  • Mobile Health and mHealth Applications
  • Central Venous Catheters and Hemodialysis
  • Technology Use by Older Adults
  • Health disparities and outcomes
  • Advanced Combinatorial Mathematics
  • Advanced Mathematical Identities
  • Telemedicine and Telehealth Implementation
  • Noise Effects and Management
  • Vascular Procedures and Complications
  • Sleep and related disorders
  • Sleep and Work-Related Fatigue
  • Assistive Technology in Communication and Mobility
  • Workplace Health and Well-being
  • Vascular Malformations Diagnosis and Treatment
  • Urban Transport and Accessibility
  • Prosthetics and Rehabilitation Robotics
  • Building Energy and Comfort Optimization
  • Venous Thromboembolism Diagnosis and Management
  • Urban Green Space and Health
  • COVID-19 Pandemic Impacts
  • Vascular anomalies and interventions
  • Employee Performance and Management
  • Point processes and geometric inequalities
  • Indoor Air Quality and Microbial Exposure
  • Balance, Gait, and Falls Prevention

SingHealth
2025

Nanyang Technological University
2015-2024

Boston University
2022-2023

Boston Medical Center
2023

Kyoto Katsura Hospital
2021

Kyoto University
2021

Sick building syndrome (SBS) is a condition affecting occupants of from which they may experience series non-specific symptoms being in that building. We aimed to (1) estimate the prevalence SBS (2), assess association between perceived indoor environmental quality (IEQ) aboveground and underground workspaces, what extent workspace location modifies these associations. A total 329 workers workspaces were followed-up three assessments for 12 months Singapore. Data on socio-demographic...

10.1016/j.buildenv.2019.106420 article EN cc-by-nc-nd Building and Environment 2019-09-17

Aging is becoming a major global challenge. Compared with younger adults, the older population has greater health needs but faces inadequate access to appropriate, affordable, and high-quality care. Telehealth can remove geographic time boundaries, as well enabling socially isolated physically homebound people wider range of care options. The impacts different telehealth interventions in terms their effectiveness, cost, acceptability aging are still unclear.This scoping review systematic...

10.2196/40460 article EN cc-by JMIR Aging 2023-01-29

Objective To explore the acceptability of family support through an AI-enabled mobile app and identify preferences for its novel module features among patients with type 2 diabetes (T2DM) members. Methods Semi-structured interviews were conducted T2DM A mock wireframe FAMILY was created to help participants visualize features. All audio-recorded transcribed verbatim. Inductive thematic analysis using constant-comparative method performed interpret patterns within data. Results total 25...

10.1177/20552076251322654 article EN cc-by-nc-nd Digital Health 2025-03-01

Indoor environmental quality (IEQ) is a general indicator of the conditions inside building. We investigated associations perceived IEQ including air quality, thermal comfort, noise, and light with stress at work extent to which workplace location modifies these associations. recruited 464 full-time workers from four companies in Singapore. Data on socio-demographic characteristics, lifestyle/health-related factors, factors were collected through self-administered questionnaires. Perceived...

10.1111/ina.12696 article EN Indoor Air 2020-05-26

Understanding older people's health-seeking behavior (HSB) is crucial for uncovering their health needs and priorities developing appropriate policies to address them avert disease progression. Technologies play an active role in our daily lives have been incorporated into activities support the population facilitate HSB. However, previous studies of HSB mainly focused on behaviors during illness, there are limited how technologies used activities.This study aimed investigate associated...

10.2196/43709 article EN cc-by JMIR Aging 2023-02-27

Background We aimed to examine the association between shift work and sleep quality in a diverse occupational type. Methods This was cross-sectional study of self-reported 424 workers aged ≥21 using Pittsburgh Sleep Quality Index (PSQI). divided into two categories based on their PSQI score: (a) ≤5 (good quality) (b) >5 (poor quality). used multiple logistic regressions assess adjusted for potential confounders. Results The mean age 39.2 (SD = 11.3) years, with being older than counterparts....

10.1371/journal.pone.0229693 article EN cc-by PLoS ONE 2020-03-04

There is a pressing need to include older individuals in health education and uncover their specific needs. Leveraging the advantages of digitized education, this study employed participatory approach engage community-dwelling adults co-creating synchronous tele-education program, with dementia as focus due its rising prevalence associated stigma Singapore. Our findings demonstrate preliminary effectiveness feasibility tele-education. Participants' feedback recommendations provided valuable...

10.1177/07334648241260614 article EN Journal of Applied Gerontology 2024-07-21

This study aims to explore if objectively and subjectively measured sleep parameters are associated with physical mental health-related quality of life in a multiethnic working population Singapore. We performed cross-sectional analysis data from 329 full-time employees enrolled workplace cohort The Short-Form 36v2 (SF-36v2) survey was used assess life, terms health. Subjective objective were using the Pittsburgh Sleep Quality Index wrist actigraphy, respectively. Generalized linear modeling...

10.3390/ijerph16214147 article EN International Journal of Environmental Research and Public Health 2019-10-28

Contrast venography is the current standard for arteriovenous dialysis access dysfunction, but this approach has several limitations. Venography images are taken in a single dimension (anteroposterior), which can introduce errors detecting and assessing severity of stenosis (a three-dimensional structure), does not allow morphological characterization access. Intravascular ultrasound (IVUS) provides view potentially enhancing accuracy stenoses. In contrast to venography, imaging with IVUS...

10.1016/j.ekir.2023.06.013 article EN cc-by-nc-nd Kidney International Reports 2023-06-17

In this paper, we propose two control methods for driving a power-assisted cart made walking assistance the elderly. The optimal ratio (OAR) and disturbance observer-based (DOB) properly adjust motor output of with high operational efficiency in response to changes environment. Healthy subjects walked on several road surfaces under various conditions, experimental results indicate proposed methods. Meanwhile, their drawbacks are also discussed herein. can be used separately or combined...

10.3390/app11031079 article EN cc-by Applied Sciences 2021-01-25

We define certain natural finite sums of $n$'th roots unity, called $G_P(n)$, that are associated to each convex integer polytope $P$, and which generalize the classical $1$-dimensional Gauss sum $G(n)$ defined over $\mathbb Z/ {n \mathbb Z}$, higher dimensional abelian groups polytopes. consider Weyl group $\mathcal{W}$, generated by reflections with respect coordinate hyperplanes, as well all permutations coordinates; further, we let $\mathcal G$ be $\mathcal{W}$ translations in Z^d$....

10.48550/arxiv.1508.01876 preprint EN other-oa arXiv (Cornell University) 2015-01-01

<sec> <title>BACKGROUND</title> Aging is becoming a major global challenge. Compared with younger adults, the older population has greater health needs but faces inadequate access to appropriate, affordable, and high-quality care. Telehealth can remove geographic time boundaries, as well enabling socially isolated physically homebound people wider range of care options. The impacts different telehealth interventions in terms their effectiveness, cost, acceptability aging are still unclear....

10.2196/preprints.40460 preprint EN 2022-06-21

<sec> <title>BACKGROUND</title> Understanding older people’s health-seeking behavior (HSB) is crucial for uncovering their health needs and priorities developing appropriate policies to address them avert disease progression. Technologies play an active role in our daily lives have been incorporated into activities support the population facilitate HSB. However, previous studies of HSB mainly focused on behaviors during illness, there are limited how technologies used activities. </sec>...

10.2196/preprints.43709 preprint EN 2022-10-20
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