For the orthogonal case, Kurt Mehlhorn and Stefan Näher created a data structure for dynamic range searching which uses dynamic fractional cascading to achieve formula_18 space and formula_19 query time. Both incremental and decremental versions of the problem can be solved with formula_20 query time, but it is unknown whether general dynamic range searching can be done with that query time. The problem of colored range counting considers the case where points have categorical attributes. If the categories are considered as colors of points in geometric space, then a query is for how many colors appear in a particular range. Prosenjit Gupta and others described a data structure in 1995 which solved 2D orthogonal colored range counting in formula_21 space and formula_22 query time. In addition to being considered in computational geometry, range searching, and orthogonal range searching in particular, has applications for range queries in databases. Colored range searching is also used for and motivated by searching through categorical data. For example, determining the rows in a database of bank accounts which represent people whose age is between 25 and 40 and who have between $10000 and $20000 might be an orthogonal range reporting problem where age and money are two dimensions. Hitomi Kobayashi  After making her debut as a non-pornographic photobook and "image video" model, Kobayashi entered the AV field in 1986. Because of her rapid popularity, Nikkatsu, Japan's leading producer of softcore pornography at the time, hired her to appear in theatrical films in 1987. After marriage and a semi-retirement beginning in 1989, Kobayashi fully returned to the AV industry in 1998. She announced her retirement in 2003 with a big-budget, though controversial, two-volume farewell adult video. According to her official profile, Hitomi Kobayashi was born in Tokyo on September 2, 1965. However, in an interview in the just before her retirement in 2003, she confessed to have actually been born in 1963. Her ambition since childhood was to be an actress. She attended acting school, and registered with a talent agency. Kobayashi was not particularly sexually precocious, claiming at the time of her AV debut, "I lost my virginity at 18, which is probably a bit late, and I wasn't very experienced with men." This relative sexual conservatism extended into her AV career. The sex scenes in all but her final video were simulated. Even at the end of her AV career, Kobayashi's attitude towards sex remained modest.