China Maritime Report No. 4: Civil Transport in PLA Power Projection

The People’s Liberation Army (PLA) has ambitious goals for its power projection capabilities. Aside from preparing for the possibility of using force to resolve Beijing’s territorial claims in East Asia, it is also charged with protecting China’s expanding “overseas interests.” These national objectives require the PLA to be able to project significant combat power beyond China’s borders. To meet these needs, the PLA is building organic logistics support capabilities such as large naval auxiliaries and transport aircraft. But it is also turning to civilian enterprises to supply its transportation needs.https://digital-commons.usnwc.edu/cmsi-maritime-reports/1003/thumbnail.jp

China Maritime Report No. 23: The Type 075 LHD: Development, Missions, and Capabilities

When the People’s Liberation Army Navy (PLAN) commissioned its first Type 075 class Landing Helicopter Dock (LHD) in April 2021, it represented an important advance in power projection capability for China’s maritime forces. For the first time, the PLAN had an amphibious warship capable of hosting significant rotary wing forces while acting as the flagship for an amphibious task force. Now with three Type 075 class ships either in or soon to be in service, the PLAN has expanded its amphibious capability even further. The Type 075’s dedicated aviation support capability, ability to conduct wet well operations, and expanded command and control and medical facilities reflect capabilities that previously did not exist within the PLAN amphibious fleet. With the Type 075 LHD, the PLAN clearly intends to bolster its ability to project power from the sea in order to protect China’s overseas interests, but will require time for amphibious task forces to become fully proficient.https://digital-commons.usnwc.edu/cmsi-maritime-reports/1022/thumbnail.jp

China Maritime Report No. 1: China’s Third Sea Force, The People’s Armed Forces Maritime Militia: Tethered to the PLA

Amid growing awareness that China’s Maritime Militia acts as a Third Sea Force which has been involved in international sea incidents, it is necessary for decision-makers who may face such contingencies to understand the Maritime Militia’s role in China’s armed forces. Chinese-language open sources reveal a tremendous amount about Maritime Militia activities, both in coordination with and independent of the People’s Liberation Army (PLA). Using well-documented evidence from the authors’ extensive open source research, this report seeks to clarify the Maritime Militia’s exact identity, organization, and connection to the PLA as a reserve force that plays a parallel and supporting role to the PLA. Despite being a separate component of China’s People’s Armed Forces (PAF), the militia are organized and commanded directly by the PLA’s local military commands. The militia’s status as a separate non-PLA force whose units act as “helpers of the PLA” (解放军的 助手) is further reflected in China’s practice of carrying out “joint military, law enforcement, and civilian [Navy-Maritime Law Enforcement-Maritime Militia] defense” (军警民联防). To more accurately capture the identity of the Maritime Militia, the authors propose referring to these irregular forces as the “People’s Armed Forces Maritime Militia” (PAFMM).https://digital-commons.usnwc.edu/cmsi-maritime-reports/1000/thumbnail.jp

China Maritime Report No. 6: Djibouti: China\u27s First Overseas Strategic Strongpoint

This China Maritime Report on Djibouti is the first in a series of case studies on China’s “overseas strategic strongpoints” (海外战略支点). The strategic strongpoint concept has no formal definition, but is used by People’s Republic of China (PRC) officials and analysts to describe foreign ports with special strategic and economic value that host terminals and commercial zones operated by Chinese firms.https://digital-commons.usnwc.edu/cmsi-maritime-reports/1005/thumbnail.jp

China Maritime Report No. 7: Gwadar: China\u27s Potential Strategic Strongpoint in Pakistan

This China Maritime Report on Gwadar is the second in a series of case studies on China’s Indian Ocean “strategic strongpoints” (战略支点). People’s Republic of China (PRC) officials, military officers, and civilian analysts use the strategic strongpoint concept to describe certain strategically valuable foreign ports with terminals and commercial zones owned and operated by Chinese firms.https://digital-commons.usnwc.edu/cmsi-maritime-reports/1006/thumbnail.jp

Dissecting the Shared Genetic Architecture of Suicide Attempt, Psychiatric Disorders, and Known Risk Factors

Background Suicide is a leading cause of death worldwide, and nonfatal suicide attempts, which occur far more frequently, are a major source of disability and social and economic burden. Both have substantial genetic etiology, which is partially shared and partially distinct from that of related psychiatric disorders. Methods We conducted a genome-wide association study (GWAS) of 29,782 suicide attempt (SA) cases and 519,961 controls in the International Suicide Genetics Consortium (ISGC). The GWAS of SA was conditioned on psychiatric disorders using GWAS summary statistics via multitrait-based conditional and joint analysis, to remove genetic effects on SA mediated by psychiatric disorders. We investigated the shared and divergent genetic architectures of SA, psychiatric disorders, and other known risk factors. Results Two loci reached genome-wide significance for SA: the major histocompatibility complex and an intergenic locus on chromosome 7, the latter of which remained associated with SA after conditioning on psychiatric disorders and replicated in an independent cohort from the Million Veteran Program. This locus has been implicated in risk-taking behavior, smoking, and insomnia. SA showed strong genetic correlation with psychiatric disorders, particularly major depression, and also with smoking, pain, risk-taking behavior, sleep disturbances, lower educational attainment, reproductive traits, lower socioeconomic status, and poorer general health. After conditioning on psychiatric disorders, the genetic correlations between SA and psychiatric disorders decreased, whereas those with nonpsychiatric traits remained largely unchanged. Conclusions Our results identify a risk locus that contributes more strongly to SA than other phenotypes and suggest a shared underlying biology between SA and known risk factors that is not mediated by psychiatric disorders.Peer reviewe

The development and validation of a scoring tool to predict the operative duration of elective laparoscopic cholecystectomy

Background: The ability to accurately predict operative duration has the potential to optimise theatre efficiency and utilisation, thus reducing costs and increasing staff and patient satisfaction. With laparoscopic cholecystectomy being one of the most commonly performed procedures worldwide, a tool to predict operative duration could be extremely beneficial to healthcare organisations. Methods: Data collected from the CholeS study on patients undergoing cholecystectomy in UK and Irish hospitals between 04/2014 and 05/2014 were used to study operative duration. A multivariable binary logistic regression model was produced in order to identify significant independent predictors of long (> 90 min) operations. The resulting model was converted to a risk score, which was subsequently validated on second cohort of patients using ROC curves. Results: After exclusions, data were available for 7227 patients in the derivation (CholeS) cohort. The median operative duration was 60 min (interquartile range 45–85), with 17.7% of operations lasting longer than 90 min. Ten factors were found to be significant independent predictors of operative durations > 90 min, including ASA, age, previous surgical admissions, BMI, gallbladder wall thickness and CBD diameter. A risk score was then produced from these factors, and applied to a cohort of 2405 patients from a tertiary centre for external validation. This returned an area under the ROC curve of 0.708 (SE = 0.013, p  90 min increasing more than eightfold from 5.1 to 41.8% in the extremes of the score. Conclusion: The scoring tool produced in this study was found to be significantly predictive of long operative durations on validation in an external cohort. As such, the tool may have the potential to enable organisations to better organise theatre lists and deliver greater efficiencies in care

A Roadmap for HEP Software and Computing R&D for the 2020s

Particle physics has an ambitious and broad experimental programme for the coming decades. This programme requires large investments in detector hardware, either to build new facilities and experiments, or to upgrade existing ones. Similarly, it requires commensurate investment in the R&D of software to acquire, manage, process, and analyse the shear amounts of data to be recorded. In planning for the HL-LHC in particular, it is critical that all of the collaborating stakeholders agree on the software goals and priorities, and that the efforts complement each other. In this spirit, this white paper describes the R&D activities required to prepare for this software upgrade.Peer reviewe