Chuo University

Modeling user redemption behavior in complex digital incentive environment: an empirical study using large-scale transactional data

Abstract The digital economy implements complex incentive systems to retain users through point redemption. Understanding user behavior in such complex incentive structures presents a fundamental challenge, especially in estimating the value of these digital assets against tradit...

Polyhedral Clinching Auctions with a Single Sample

We address auctions in two-sided markets with budget-constrained buyers, a fundamental setting with important applications such as display advertising. Our goal is to design efficient mechanisms that satisfy dominant-strategy incentive compatibility, individual rationality, and b...

Interpretable integration of CITE-seq RNA and ADT profiles without explicit modality-weight tuning via tensor decomposition-based unsupervised feature extraction

CITE-seq jointly profiles cellular transcripts and surface proteins, but RNA and ADT modalities differ markedly in dimensionality, sparsity, and noise characteristics. We applied tensor-decomposition-based unsupervised feature extraction to paired CITE-seq data by constructing a...

The association of corporate measures and health management initiatives with employee engagement in Japanese companies

Using data from 2,502 companies in Japan’s Health and Productivity Management Survey, this study examined determinants of employee engagement and corporate success. Regression analysis showed that hourly paid leave (adjusted odds ratio [aOR]: 1.29, 95% CI: 1.07–1.56) and communic...

Black-Box Construction of Partial Key Exposure Resilient Symmetric-Key Encryption Scheme

In a TLS session, the user is granted access solely to the encryption and decryption oracles, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>ℰ</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mi>K</mml:mi> <mml:mo>,</mml:mo> <mml:mi>·</mml:mi> <mml:...

Trade-off between repository footprint and radiotoxicity in geological disposal of vitrified high-level waste from spent MOX fuels: quantitative assessment of simplified minor actinide separation

Radioactive waste management remains a critical challenge for the sustainability of nuclear energy systems, particularly for closed fuel cycles utilizing mixed oxide (MOX) fuel. MOX fuel contains significantly higher concentrations of minor actinides (MAs) and heat-generating nuc...