We introduce mix rings, a novel peer-to-peer mixnet architecture for anonymity that yields low-latency networking compared to existing mixnet architectures. A mix ring is a cycle of continuous-time mixes that uses carefully coordinated cover traffic and a simple fan-out mechanism to protect the initiator from timing analysis attacks. Key features of the mix ring architecture include decoupling ...

Batching jobs in a manufacturing system is a very common policy in most industries. Main reasons for batching are avoidance of set ups and/or facilitation of material handling. Examples of batch-wise production systems are ovens found in aircraft industry and in semiconductor manufacturing. Starting from the early nineties much research efforts have been put in constructing strategies for the d...

In this paper, we propose and evaluate the performance of a multicast technique, called controlled CIWP, for supplying video-on-demand services. Similar to batching schemes, controlled CIWP allows two clients that request the same video to share a channel. Unlike batching, the controlled CIWP scheme does not delay the earlier request in order to promote sharing. Instead, sharing is ensured by p...

We study a single batching machine scheduling problem with transportation and deterioration considerations arising from steel production. A set of jobs are transported, one at a time, by a vehicle from a holding area to the single batching machine. The machine can process several jobs simultaneously as a batch. The processing time of a job will increase if the duration from the time leaving the...

In picking product items in a warehouse to fulfill customer orders, a practical way is to classify similar orders as the same batch and then to plan the optimal picker routing when picking each batch of items. Different from the previous problems, this work investigates the joint order batching and picker Manhattan routing problem, which simultaneously determines the optimal order batching allo...

0360-8352/$ see front matter 2008 Elsevier Ltd. A doi:10.1016/j.cie.2008.07.022 * Corresponding author. Tel./fax: +86 24 83680169 E-mail addresses: [email protected] (L. Tang In this paper, we consider two new types of the two-machine flowshop scheduling problems where a batching machine is followed by a single machine. The first type is that normal jobs with transportation between machin...

isolated impacted supernumerary teeth are quite rare, but they can be seen associated with several syndromes such as cleidocranial dysostosis or gardner's syndrome. this article aims to discuss a case of sequential formation of supernumerary teeth with no other associated disease or syndrome. a 17-year-old iranian male with 8 impacted supernumerary teeth was referred to the department of pediat...

The Online Order Batching Problem with Multiple Pickers (OOBPMP) consists of optimizing the operations related to picking process orders in a warehouse, when policy follows an order batching strategy. In this case, variant well-known considers existence multiple workers warehouse and online arrival orders. We study three different objective functions for problem: minimizing completion time, dif...

Bangladesh is one of the largest exporters of jute which is commonly processed with mineral Jute Batching Oil (JBO). JBO-processed jute products (especially food grade packaging item) have poor acceptability worldwide mainly due to their unpleasant odor, texture and the possible presence of carcinogenic compounds Foreign market has demanded replacement of mineral JBO and it is high time not to ...

Non-linear least squares solvers are used across a broad range of offline and real-time model fitting problems. Most improvements the basic Gauss-Newton algorithm tackle convergence guarantees or leverage sparsity underlying problem structure for computational speedup. With success deep learning methods leveraging large datasets, stochastic optimization received recently lot attention. Our work...