* Xybernaut, a Fairfax company that makes wearable computing devices, bought a 25 percent stake in Sunshine Hi-Tech, a company based in Shenzhen, China, that makes handheld devices and operating systems. Terms were not disclosed. Sunshine's operating system, Sunshine 2000, is designed for information appliances, intelligent control systems, vending machines, home appliances and cellular phones. Xybernaut said Sunshine has more than 1 million users in China. Sunshine's products are used by police, firefighters, emergency medical personnel, insurance adjusters and stock market traders, among others. Edward G. Newman, Xybernaut's chairman and chief executive, said in a statement that the company also obtained worldwide marketing rights to the Sunshine operating system outside of China.

* CACI International, an Arlington government technology contractor, was awarded a subcontract by General Dynamics Network Systems to provide network services to the U.S. Air Force under the Network-Centric Solutions contract. General Dynamics is one of eight prime contractors on the deal, which could be worth up to $9 billion over a five-year period. Air Force agencies will be able to use Network-Centric Solutions to order networking equipment and services, and voice, video and data communications hardware and software. CACI said it expects to provide support for telecommunications, networks and information assurance, as well as life-cycle support for major operational networks.

* Spherix reported a third-quarter profit of $333,621 (3 cents a share), compared with a loss of $115,189 (1 cent) in the same period last year. The information services and biotech company said third-quarter revenue increased to $7.1 million, from $5.1 million. For the nine months ended Sept. 30, Spherix lost $21, 523 (zero) on $18.9 million in revenue, compared with a loss of $1.3 million (11 cents) on $14.3 million in revenue for the corresponding period last year. Spherix shares closed yesterday at $3.58, down 2 cents.

* Information Analysis, a Fairfax-based Web solution and software conversion company, earned $354,000 (3 cents) on $2.4 million in revenue during its third quarter, up from a net income of $11,000 (zero) on $1.5 million in revenue during the same quarter last year. For the nine months ended Sept. 30, the company earned $466,000 (4 cents) on $6.7 million in revenue, compared with a loss of $254,000 (2 cents) on $3.6 million in revenue during the same period last year. Shares rose 4 cents, about 15 percent, to close at 30 cents.

* VCampus, a Reston e-learning company, lost $1.8 million (24 cents) on $917,635 in revenue during its third quarter, compared with a loss of $718,174 (16 cents) on $1.4 million in revenue during the corresponding quarter a year ago. For the nine months ended Sept. 30, the company lost $4.9 million (72 cents) on $3.9 million in revenue, equaling its loss of $4.9 million ($1.72) on $4.7 million in revenue during the same period in 2003. Shares fell 6 cents to close at $2.11.

Compiled from reports by Washington Post staff writers.