admission. This proportion could already be greater in some parts of the country and may increase if referrals of cases of self-poisoning increase faster than the facilities for their assessment and management. The provision of social work and psychiatric expertise in casualty departments may be one means of preventing unnecessary medical admissions without risk to the patients. Dr Blake's and Dr Bramble's figures do not demonstrate, however, that any advantage would attach to medical teams taking over assessment from psychiatrists except that, by implication, assessments would be completed sooner by staff working on the ward full time. What the figures actually suggest is that if assessment of overdoses were left to house doctors there would be an increase in admissions to psychiatric units (by 19°U), outpatients (by 5O°'), and referrals to social services (by 140o). So for house doctors to assess overdoses would provide no economy for the psychiatric or social services. The study does not tell us what the consequences would have been for the six patients who the psychiatrists would have admitted but to whom the house doctors would have offered outpatient appointments. E J SALTER

Vitamin D deficiency.

Windows Azure被认为是Windows NT之后的16年来微软最重要的产品,微软计划将80%的资源和研发力量投入到云计算项目中。这种俨然押上未来的豪赌,是IT业的新潮流迫使微软做出了妥协,还是微软主动寻求新的霸主地位而酝酿的云计算新变革？

Windows Azure：微软押上未来

New scheduling approach using reinforcement learning for heterogeneous distributed systems

Combining containers and virtual machines to enhance isolation and extend functionality on cloud computing

Achieving the fifth-generation (5G) vision will introduce new technology innovations and substantial changes in delivering cutting-edge applications and services in current mobile and cellular networks. The Cloud Radio Access Network (C-RAN) concept emerged as one of the most compelling architectures to meet the requirements of the 5G vision. In essence, C-RAN provides an advanced mobile network architecture which can leverage challenging features such as network resource slicing, statistical multiplexing, energy efficiency, and high capacity. The realization of C-RAN is achieved by innovative technologies such as the software-defined networking (SDN) and the network function virtualization (NFV). While SDN technology brings the separation of the control and data planes in the playground, supporting thus advanced traffic engineering techniques such as load balancing, the NFV concept offers high flexibility by allowing network resource sharing in a dynamic way. Although SDN and NFV have many advantages, a number of challenges have to be addressed before the commercial deployment of 5G implementation. In addition, C-RAN introduces a new layer in the mobile network, denoted as the fronthaul, which is adopted from the recent research efforts in the fiber-wireless (Fi-Wi) paradigm. As the fronthaul defines a link between a baseband unit (BBU) and a remote radio unit (RRU), various technologies can be used for this purpose such as optical fibers and millimeter-wave (mm-wave) radios. In this way, several challenges are highlighted which depend on the technology used. In the light of the aforementioned remarks, this paper compiles a list of challenges and open issues of the emerging technologies that realize the C-RAN concept. Moreover, comparative insights between the current and future state of the C-RAN concept are discussed. Trends and advances of those technologies are also examined towards shedding light on the proliferation of 5G through the C-RAN concept.

/pdf/realizing-5g-vision-through-cloud-ran-technologies-4nlcvyj82z.pdf

Realizing 5G vision through Cloud RAN: technologies, challenges, and trends

Over the past few years, researchers have been propelled for a Utility Computing Model. Cloud computing allows delivering resource on demand by means of virtualization. Virtualization has been around from the period of Mainframe computing. The proposal of using a computer system to emulate another computer system was early realized as useful for testing and increased resource utilization purposes. As with several computer technologies, IBM initiated the way with their VM system. In the last decennary, VMware’s virtual machine monitor has been quite successful. In recent times, open-source hypervisor’s like Xen and KVM added virtualization to the open source world, initially with a variant named para-virtualization and later using hardware assisted full virtualization. This paper surveys two main virtualization technologies: Xen and KVM. Also system and network performance evaluation tests are conducted to analyze scalability and performance of the virtualized environment.

Virtualization Techniques: A Methodical Review of XEN and KVM

DNS Reflection Amplification Attacks are now a days popular and it is the Distributed Denial of Service Attack. This attack makes use of DNS Servers, which are publicly hosted and accessible by everyone, to give huge responses to victims. The victims thus get overloaded by the huge responses for which they do not have sent requests, thus exhausting the resources of the victim. Chukwa is a hadoop subproject which is designed for distributed log monitoring and analysis. This paper concentrates on detecting the DNS Reflection Amplification Attacks by using chukwa for log collection and HDFS for storing logs and Chukwa Demux jobs which are Map Reduce Jobs for detecting the orphan queries and thus automatically defensing by updating the firewall rules.

Automatic Detection and Rectification of DNS Reflection Amplification Attacks with Hadoop MapReduce and Chukwa

Cardiotoxicity in snake envenomation has not been adequately explored in the literature. This retrospective, observational study analysed clinical profiles and cardiovascular effects (CVE), with as...

https://journals.sagepub.com/doi/pdf/10.1177/0049475518814019

Cardiovascular manifestations and patient outcomes following snake envenomation: a pilot study.

Background: The incidence of postmenopausal osteoporosis continues to rise, as population ages. The morbidity and mortality associated with osteoporotic fractures have a significant negative impact on the economy and quality of life of the affected individual and the community, at large. Objectives: We aimed to study the prevalence of osteoporosis in ambulant rural postmenopausal women, and to look at their dietary calcium intake (DCI) and Vitamin D status. Subjects and Methods: This was a cross-sectional study conducted in 1565 ambulant South Indian rural postmenopausal women. Bone mineral density was estimated by a dual-energy X-ray absorptiometry scan at the femoral neck (FN) and lumbar spine (LS). DCI was calculated by recall for the previous week, and the blood bone biochemical profile was measured. Results: The mean standard deviation (SD) age and body mass index of this population were 60.7 (7.2) years and 26.2 (4.8) kg/m2, respectively. The prevalence of osteoporosis was 22% at the FN and 39% at the LS. An increase in the prevalence of osteoporosis was noted at both sites, in successive age categories. Mean (SD) DCI was 420 (282) mg/24 h. Fifty-four percent had Vitamin D deficiency (VDD) (

Bone health after fifth decade in rural ambulatory South Indian postmenopausal women

Background Neurological complications following snake and scorpion bite are diverse. Literature regarding patterns of cerebrovascular injury (CVI) and outcomes among these patients is scarce. This is a descriptive study of the clinical profile, brain imaging findings, mechanisms of injury, vascular territory involvement and outcomes of CVI following scorpion and snake envenomation, in a tertiary care center in South India.MethodologyPatients with scorpion sting- and snake envenomation-related complications were retrospectively enrolled. Neuroimaging was performed on five patients with each envenomation, and they were found to have neurological involvement. On imaging, three patients were found to have a CVI. Clinical, radiological parameters and outcomes of these patients were studied. We also performed a review of the literature and analyzed the finding of all the cases.ResultIn all, three patients each had evidence of CVI in imaging. An additional 32 reports of scorpion sting-related CVI and 35 reports of snake envenomation-related CVI were identified from the literature. There was a male predominance among these patients. Mean age of the patients with scorpion sting was 42.8 years as compared with 33 years for the patients with snake envenomation. Features of severe envenomation were present in all patients. Persistently depressed sensorium and new-onset focal neurological deficits were seen in 70% of all patients. Infarcts were seen in 88% of patients with snake envenomation and 53% of patients with a scorpion sting. Mortality was 28% among patients with a scorpion sting as compared with 8% with snake envenomation. Conclusion Cerebrovascular injuries are uncommon neurological manifestations following scorpion and snake envenomation. These tend to occur in younger patients. Infarcts are more common than bleeds.

/pdf/cerebrovascular-injury-following-scorpion-sting-and-snake-2mc9vgqrwl.pdf

A Binu

Papers

Virtualization Techniques: A Methodical Review of XEN and KVM

Automatic Detection and Rectification of DNS Reflection Amplification Attacks with Hadoop MapReduce and Chukwa

Cardiovascular manifestations and patient outcomes following snake envenomation: a pilot study.

Bone health after fifth decade in rural ambulatory South Indian postmenopausal women

Cerebrovascular Injury Following Scorpion Sting and Snake Envenomation: A Case Series.