We investigated worker policing by egg eating in the ponerine ant Pachycondyla inversa, a species with morphologically distinct queens and workers. Colonies were split into one half with the queen and one half without. Workers in queenless colony fragments started laying unfertilized male eggs after three weeks. Worker-laid eggs and queen-laid eggs were introduced into five other queenright col...

In this paper, we present a provably secure redactable signature scheme allowing to independently redact structure and content. We identify the problems when structure is not separated from content, resulting in an attack on the scheme proposed at VLDB ’08 by Kundu and Bertino. The attack allows for changing the semantic meaning of a given tree. We introduce a rigid security model, including co...

Tomoko MATSUZONO MBBS, MRCOG Department of Obstetrics and Gynaecology, Queen Elizabeth Hospital, Hong Kong Kam-On KOU MBBS, MRCOG, FHKCOG, FHKAM (O&G) Department of Obstetrics and Gynaecology, Queen Elizabeth Hospital, Hong Kong Chung-Fan POON APN, RN, RM, MSc Health Care (Nursing) Department of Obstetrics and Gynaecology, Queen Elizabeth Hospital, Hong Kong Kwok-Yin LEUNG MBBS, MD, FRCOG, FHKA...

Room Types Executive Room (Queen size bed / Standard Room (Queen size bed / Bath tub Deluxe Room (Queen size bed / Bath tub Deluxe Double Room (King size bed) Bussiness Room (Twin bed) Family Room (Queen size bed*2) All rooms will be provided with: 1. Two bottles of water each day 2. Free wired/cordless internet access 3. Free instant coffee/tea bag 4. A breakfast each day 5.Free self-laundry s...

Queens of the primitively eusocial wasp Ropalidia marginata appear to maintain reproductive monopoly through pheromone rather than through physical aggression. Upon queen removal, one of the workers (potential queen, PQ) becomes extremely aggressive but drops her aggression immediately upon returning the queen. If the queen is not returned, the PQ gradually drops her aggression and becomes the ...

world's history presents only during occasional long periods of widespread prosperity, to Mr. Lytton's eyes her personal influence does not account either for the great events that happened in her time or for the eminence of the chief characters which surrounded her. We see in his biography, what is lacking in the earlier book, a sincere attempt to refrain from belittling his subject, but certa...

The breeding system of social organisms affects many important aspects of social life. Some species vary greatly in the number of breeders per group, but the mechanisms and selective pressures contributing to the maintenance of this polymorphism in social structure remain poorly understood. Here, we take advantage of a genetic dataset that spans 15 years to investigate the dynamics of colony qu...

Honey bee colonies reproduce through swarming, in which about half the workers and the laying queen leave the natal nest and form a cluster in nearby vegetation. After a new nest cavity has been selected, the entire swarm cluster and the queen must become airborne and move en masse to the chosen site. Failure of the queen to leave the natal nest or relocate to the new nest cavity will result in...