Open Problems in (Hyper)Graph Decomposition

Large networks are useful in a wide range of applications. Sometimes problem instances are composed of billions of entities. Decomposing and analyzing these structures helps us gain new insights about our surroundings. Even if the final application concerns a different problem (such as traversal, finding paths, trees, and flows), decomposing large graphs is often an important subproblem for complexity reduction or parallelization. This report is a summary of discussions that happened at Dagstuhl seminar 23331 on "Recent Trends in Graph Decomposition" and presents currently open problems and future directions in the area of (hyper)graph decomposition

Tackling health inequalities: moving theory to action

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Knowledge, attitude and practises of dentists towards oral health care during pregnancy: a cross sectional survey in New South Wales, Australia

Background: Studies internationally show a lack of consensus among dentists regarding perinatal oral health yet no study in Australia has explored the perceptions of dentists in this area. This study aims to determine the knowledge, perceptions and practises of dentists in New South Wales (NSW), Australia, about perinatal oral health. Methods: An online survey was distributed to 1357 members of the Australian Dental Association (NSW) and 185 (13.4%) completed surveys were returned. Results: Most dentists (99%) stated that pregnant women should receive a dental check, yet only 20% agreed that there was a good understanding among health professionals on this topic. Dentists were aware of safe dental practises during pregnancy but had limited knowledge about the association between periodontal disease and birth outcomes. Dentists were more likely to advise pregnant women to delay dental visits when there was a perceived lack of knowledge of the risks involved (odds ratio, 2.157) or were concerned about providing treatment without consent from their general practitioner (odds ratio, 2.449). Most dentists (95.7%) stated that they wanted further information about dental care during pregnancy. Conclusions: Findings suggest a need for continuing education for dentists and practise guidelines on perinatal oral health. Further research with a national sample is recommended to confirm these findings

The use of MRI in the investigation of lateral meniscal tear post medial unicompartmental knee replacement

The evaluation of lateral knee pain in patients with a medial unicompartmental knee replacement (UKR) is complex. The native lateral compartment structures are prone to the same injuries as patients with normal knees. Historical reports of lateral meniscal injury post medial UKR have argued MRI evaluation is obsolete due to artefact caused by the prosthesis. We report a case of lateral meniscal injury in a patient two years after successful medial UKR. We identified the offending pathology via utilization of MRI scanners adopting metal artefact reduction sequences (MARS). The MARS MRI protocol helps clinicians accurately and non-invasively evaluate soft tissue structures in knees with metal prostheses. It also allows surgeons to accurately counsel patients and provides a higher degree of certainty in treating the pathology