Abstract: A single fan double tower parallel drying air generating device includes a dehumidification tower group. One end of the dehumidification tower group is connected with an air outlet control valve, the other end is connected with a regeneration heater. The other section of the regeneration heater is connected with a water cooler. The other end of the water cooler is connected with a fan. The other end of the fan is connected with a return air filter. A return air control valve is set between the fan and the return air filter. A bypass air duct is set between the dehumidification tower group and the air outlet control valve. The bypass air duct is connected to the regeneration control valve group. The other end of the regeneration control valve group is connected to the return air control valve through a duct.

Abstract: Methods and systems for searching directory access groups are disclosed. A set of groups associated with a logon user is determined. The set of groups is partitioned into one or more disjoint subsets, wherein each of the disjoint subsets is represented by a data representation including a root node and one or more intermediate nodes. For each of the disjoint subsets, the disjoint subset is path compressed to flatten a structure of the data representation representing the disjoint subset. The data representation is cached to a database cache.

Abstract: Methods and systems for searching directory access groups are disclosed. A set of groups associated with a logon user is determined. The set of groups is partitioned into one or more disjoint subsets, wherein each of the disjoint subsets is represented by a data representation including a root node and one or more intermediate nodes. For each of the disjoint subsets, the disjoint subset is path compressed to flatten a structure of the data representation representing the disjoint subset. The data representation is cached to a database cache.