We study the problem of computing optimal bundles given agents’ preferences over individual items when agents derive satisfaction from the entire bundle under constraints on the size k of the bundle. Building on the notion of Condorcet winning sets by Gehrlein [16], we extend common Condorcet consistent voting rules from the single winner voting setting to that of forming bundles of size k. Our...

We study the complexity of voting control problems in multi-peaked elections. In particular, we focus on the constructive/destructive control by adding/deleting votes under Condorcet, Maximin and Copeland voting systems. We show that the NP-hardness of these problems (except for the destructive control by adding/deleting votes under Condorcet, which is polynomial-time solvable in the general ca...

1. Butler W, Floyd M, Brown J, Toney S, Daneshvar M, Cooksey R, et al. Novel mycolic acid–containing bacteria in the family Segniliparaceae fam. nov., including the genus Segniliparus gen. nov., with descriptions of Segniliparus rotundus sp. nov. and Segniliparus rugosus sp. nov. Int J Syst Evol Microbiol. 2005;55:1615–24. DOI: 10.1099/ijs.0.63465-0 2. Sikorski J, Lapidus A, Copeland A, Misra M...

Note from the Editor Although cannabis is the most widely consumed illicit drug in many western countries, there is a paucity of information about harm reduction strategies for this drug. In part this may be due to the polarized debate around cannabis which tends to characterize it as wholly evil, or wholly good. In this paper Wendy Swift, Jan Copeland and myself attempt to summarize the major ...

Definition The US Congress enacted the Clean Water Act in 1972 (P.L. 92-500, the 1972 Amendments to the Federal Water Pollution Control Act), which is the principal law dealing with polluting activity in streams, rivers, lakes, and estuaries of the USA (Copeland, 2006). The Clean Water Act established a water quality standards approach for regulating water quality, with the US Environmental Pro...

In 1949, Geschickter and Copeland (1) first described fibroma of tendon sheath (FTS) as a distinct entity, but it was not described further until 1979, when Chung and Enzinger (2) presented the clinical and pathological findings of 138 cases selected from the files of the Armed Forces Institute of Pathology. In all cases of FTS reported in literature, only six have been implicated as a cause of...

Some researchers indicated that situation models resemble autobiographical memory (AbM). For example, Zwaan & Radvansky (1998) pointed “The dimensions of time, space, and protagonist are also featured in accounts of autobiographical memory of directly experienced events” by quoted Wagenaar (1986). Also, Radvansky, Copeland & Zwaan (2005) investigated AbM using memories of fictional autobiograph...

'Blackett, R L, et al, British Journal of Surgery, 1978, 65, 393. 2 Wilmore, D W, and Dudrick, S J, Archives of Surgery, 1969, 98, 256. 3 Durskin, M S, and Seigal, P D, 7ournal of the American Medical Association, 1963, 185, 966. 'Copeland, F M, et al, Surgery, Gynecology, and Obstetrics, 1974, 138, 377. 6Horshal, V L, Ause, R G, and Hoskins, P A, Archives of Surgery, 1971, 102, 353. Tanner, W ...