Article Per Year (5 Year)
p-Index From 2021 - 2026
0.562
P-Index
This Author published in this journals
All Journal International Journal of Advances in Applied Sciences Economic Journal of Emerging Markets Window of Health : Jurnal Kesehatan
Ahmad, Bilal
Unknown Affiliation
Earth & Planetary Sciences Economics, Econometrics & Finance Environmental Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Prevalence of Dysmenorrhea and Its Effect on the Quality of a Female's Life Ahmad, Bilal; Fatima, Sumia; Shafee, Warda Fatima; Keen, Mahnoor Asghar; Mehak, Marwa; Noor, Manahil; Majid, Abdul; Khan, Shayan Ali
Window of Health : Jurnal Kesehatan Vol 9 No 1 (January 2026)
Publisher : Fakultas Kesehatan Masyarakat Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/woh.vi.3040

Abstract

Dysmenorrhea, a common gynecological complaint among young females, manifested with severe pain in 36.6% (117/320) of participants and moderate-to-severe quality of life (QoL) impairment in 74.2% (222/320) among female medical students in Khyber Pakhtunkhwa, Pakistan. This cross-sectional study utilized non-random convenience sampling to enroll 320 participants, who completed a reliable self-structured questionnaire (Cronbach's α = 0.72). Associations between dysmenorrhea factors and QoL domains (mild, moderate, severe) were evaluated using Pearson chi-square tests. No significant association was observed between menstrual pain intensity and QoL (χ2=25.932, df = 20, p = 0.168). In contrast, breakfast skipping showed a strong association with QoL (χ2=12.958, df = 2, p = 0.002). Associated symptoms (χ2=24.289, df = 10, p = 0.007) and irregular menstrual cycles (χ2=7.429, df = 2, p = 0.024) also demonstrated significant links, highlighting lifestyle and symptom clustering effects. These findings underscore that QoL burdens stem primarily from modifiable factors beyond pain severity alone. Targeted non-pharmacological interventions—such as nutritional education to encourage breakfast consumption and proactive symptom management—are recommended to mitigate dysmenorrhea's impact and enhance well-being in this population.
Asymmetric return dynamics and stock price crash risk: Evidence from a quantile regression analysis of an emerging market Arif, Unbreen; Ahmad, Bilal; Rizvi, Fizza; Azhar, Sarah
Economic Journal of Emerging Markets Volume 18 Issue 1, 2026
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ejem.vol18.iss1.art9

Abstract

Purpose — Understanding extreme downside risk is particularly important in emerging equity markets, where higher market volatility, lower liquidity, and weaker information environments make stock prices more vulnerable to sudden, severe crashes. This study examines downside risk, stock price crash risk, and lower-tail return dynamics using firm-level stock return data for firms listed in the Pakistan Stock Exchange over the period 2014–2024. Method — Using panel regression and quantile regression techniques, the study investigates the determinants of crash risk and assesses the predictive role of downside risk for future equity returns. Findings — The results indicate that downside risk is strongly associated with a higher likelihood of extreme negative return realisations, while its effect on average returns remains limited. Quantile-based estimates further show that the impact of downside risk intensifies substantially in the lower tail of the return distribution, highlighting pronounced return asymmetries. These patterns persist across both financial and non-financial firms, although their magnitude varies with market conditions. Implications — The results carry important implications for investors, regulators, and risk managers concerned with downside protection and the identification of early warning signals in emerging equity markets.Originality — This study provides new firm-level evidence from an emerging equity market by jointly examining downside risk, crash risk, and return tail behaviour within a unified empirical framework by using quantile regression.
State evolution approach for the axion conversion probability in magnetosphere of a neutron star Ahmad, Bilal; Ali, Shehreyar
International Journal of Advances in Applied Sciences Vol 15, No 1: March 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v15.i1.pp355-371

Abstract

Neutron stars (NS), with their extreme gravitational and magnetic fields, provide an exceptional astrophysical laboratory for studying axion dark matter (DM). Through the Primakoff effect, axions can convert into photons within the magnetospheres of NS, a process that may produce observable radio and X-ray signals. In this work, we investigate axion-photon conversion using a novel, time-dependent state evolution formalism, moving beyond the commonly used stationary-path approximations. We derive a generic analytical expression for the conversion probability and calculate the associated radiated power. Our analysis demonstrates that this approach allows NS to strongly constrain the axion-photon coupling constant, reaching sensitivities of gaγγ ≃ 10−14 −10−15 GeV−1 for axion masses of ma ≃ 10−3 −10−10 eV. These results establish a new pathway to constrain gaγ via NS observations. Future campaigns using powerful observatories like the James Webb Space Telescope (JWST), Green Bank Telescope (GBT), and More Karoo Array Telescope (MeerKAT) array will be ideally suited to probe the distinct spectral signatures predicted by our model across multiple frequency domains.
Co-Authors Abdul Majid Ali, Shehreyar Arif, Unbreen Azhar, Sarah Fatima, Sumia Keen, Mahnoor Asghar Khan, Shayan Ali Mehak, Marwa Noor, Manahil Rizvi, Fizza Shafee, Warda Fatima