Kazumi Kubota

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XML data are expected to be widely used in Web information systems and EC/EDI applications. Such applications usually use a large number of XML data. First, we must allow users to retrieve only necessary portions of XML data by specifying search conditions to flexibly describe such applications. Second, we must allow users to combine XML data from different(More)
This study investigated the distinctiveness between workaholism and work engagement by examining their longitudinal relationships (measurement interval=7 months) with well-being and performance in a sample of 1,967 Japanese employees from various occupations. Based on a previous cross-sectional study (Shimazu & Schaufeli, 2009), we expected that workaholism(More)
OBJECTIVES The aim of this study was to validate the Japanese version of the Recovery Experience Questionnaire (REQ-J), which assesses how individuals unwind and recuperate from work during leisure time (i.e., psychological detachment, relaxation, mastery and control). METHODS The translated and back-translated REQ was administered via the Internet to(More)
The present study examined the association between workaholism, the tendency to work excessively hard in a compulsive fashion, and sleep problems among Japanese nurses. A cross-sectional survey was conducted among 600 nurses from 2 university hospitals in Japan using a self-reported questionnaire on workaholism, sleep, job-related variables (i.e., job(More)
OBJECTIVES Although it is understood that work-related factors, including job demands, job control, and workplace support, are associated with workers' health and well-being, the role played by personal characteristics, especially workaholism, has not been fully investigated. This study examined workaholism's associations with psychological ill health, low(More)
Mb describe the design and implementation of a constraint management facility for our active object-oriented database system called Jasmine/A. The facility includes integrity constraints, events/triggers, and constraint rules. The facility enables the user to handle both interobject and intraobject constraints, to define both primitive and composite events,(More)
New multimedia applications have emerged on top of information infrastructures, such as on-demand services, digital libraries and museums, online shopping, and document management, which require new databases. That is, next-generation database systems must enable users to efficiently and flexibly develop and execute such advanced multimedia applications. We(More)
Nowadays, structured data such as sales and business forms are stored in data warehouses for decision makers to use. Further, unstructured data such as emails, html texts, images, videos, and oftIce documents are increasingly accumulated in personal computer storage due to spread of mailing, Www, and word processing. Such unstructured data, or what we call(More)
OBJECTIVES This study among Japanese dual-earner couples examined the independent and combined associations of work-to-family conflict (WFC) and family-to-work conflict (FWC) with psychological health of employees and their partners and the relationship quality between partners. METHODS The matched responses of 895 couples were analyzed with logistic(More)