Live Migration Research Articles

Affect, Creativity and Migrant Belonging

AbstractAffect and creativity are proposed as offering an important lens for examining the politics of belonging in the everyday lives of migrants and refugees. Mobile emotions are circulated, intensified, and transformed in creative ways through digital media, demanding attention to new opportunities for challenging hierarchies, creating belonging, transforming gendered structures, and reinforcing the foundations of inequality and exclusion.

Resource Assessment of Larimichthys crocea in the East China Sea Based on eDNA Analysis

Environmental DNA (eDNA) is a promising tool for rapid and noninvasive biomonitoring and resource assessment. Broadly, two main PCR-based strategies of biodiversity monitoring can be deployed for eDNA analysis. The first one consists of targeting single species using standard PCR, real-time quantitative PCR (qPCR), or droplet digital PCR (ddPCR). The second strategy aims to simultaneously detect multiple species relying on High-Throughput Sequencing (i.e. eDNA metabarcoding). The aim of this study was to further explore a convenient and feasible method to correctly assess fishery resources using eDNA technology for large yellow croaker (Larimichthys crocea). Two eDNA methods (metabarcoding and qPCR) were used to investigate the biomass and distribution of large yellow croaker in the autumn and spring seasons in the central and southern regions of the East China Sea, and these results were compared with the results of a bottom trawling fishery survey. The results suggested that the designed NADH2-specific primers and developed real-time qPCR method were more applicable and reliable. The variation in the eDNA concentration of large yellow croakers coincided well with that of a real capture survey in the East China Sea. The difference in eDNA concentration between the surface and bottom water samples reflected the distribution characteristics in the water layer related to the life history of L. crocea in the two seasons. The developed methods based on eDNA technology and real-time qPCR could not only be used to evaluate the resource distribution but could also contribute to estimating the life history and migration route of large yellow croaker.

Live Migration of Virtualized Carrier Grade SIP Server

The concept of network virtualization, such as network functions virtualization, has attracted considerable attention from telecom carriers and a live migration technique is a key feature of virtualization technology. However, there are some challenges associated with applying server virtualization technology including live migration to a SIP server. Previous work has not dealt with the performance or behavior of a SIP server during live migration. Neither has it targeted a carrier grade SIP server for live migration. In this paper we present a virtualized carrier grade SIP server running on a virtual machine, which is configured with Carrier Grade Linux, HA middleware and SIP-AS application. We also assess its performance to investigate the impact of throughput degradation and suspension on a SIP layer and HA cluster configuration.

Night stories: Urban narratives of migrant lives in Europe

This introduction provides an overview of this Special Issue: ‘Night Stories: Urban Narratives of the Migrant Lives in Europe’, which originates from work undertaken within the collaborative HERA-funded research project ‘Night spaces: Migration, culture and integration in Europe’ (NITE). It argues that experiences and representations of the urban night are often overlooked in Humanities research. It contends that understandings of this overlooked dimension of the urban night can provide important and more nuanced insights into questions of migration. It surveys the collection of academic and artistic contributions to the Special Issue, which provides a transdisciplinary survey on the storytelling that emerges from diverse experiences of migration and their connections to the urban night.

REPRESENTATION OF IDENTITY CRISIS IN THE SELECTED WORKS OF JUMPA LAHIRI: A CRITICAL STUDY

Society plays a vital role in literature and in the personal lives of people. As literature is a mirror of society, we can mostly find historical, cultural, religious, social, political, and geographical representation of Human society of Different Communities and countries in literature. The way globalization can play a very important role in the life of the people, due to globalization most of the people wish to start their journey in the rural to urban Areas from broad to abroad countries, metro, and mega cities of the world. As human beings, we have always been in Adventure of a better life. The people are attracted towards Education, fashion, money, civilization, discipline and Well-mannered lifestyles. People move from one place to another for the betterment of Life while they leave their homeland and Shift into another Country for a Better future, but this Detachment from homeland creates identity Crisis, alienation, rootlessness, inner conflict due to Different cultures and dual identity in the life of migrants. These impacts of migration and modernization are also represented in the work of various contemporary Diaspora writers. Like Jumpa lahiri is one of admired Indian- American authors, Her work portrays migrant Experience and life This research is focused on the Diaspora writing and identity crisis in the select works of Jumpa Lahiri.

Features of building virtual PBX

The article considers the features of organizing highly efficient telephone communication using cloud-based PBXs.
 The advantages of solutions based on IP-telephony compared to classical automatic telephone exchanges are treated. It is shown that the use of a virtual PBX as a separate configuration of a dedicated server will provide a flexible system of settings.
 The virtualization model is considered. The analysis of virtualization methods is carried out and it is noted that the result of their development is the emergence of multi-core processors, an increase in the throughput of computer interfaces, an increase in the capacity and speed of data storage systems. It is shown that each of these methods differs in hardware emulation methods and finds its place depending on the application.
 A solution using the Asterisk software product is considered for organizing the IP-telephony. The configuration of the virtualization environment setting is discussed. It is proposed to use a reliable PROXMOX VE infrastructure, which is an open source virtualization system and support for live migration.
 Studies have been carried out to determine the performance parameters of virtualization technologies, namely, hypervisor and container ones. It is noted that the main peak of the load on the OP is the assembly of the system from binary files, which requires significantly more resources (the load increases by about 2 times) than the preparation of these files. During the CPU load analysis, the virtual machine was found to be very demanding. It has been proven that virtual machines with hypervisor virtualization technology consume more server hardware resources than virtual machines with container virtualization technology.

Can the “10-year fishing ban” rescue biodiversity of the Yangtze River?

Can the “10-year fishing ban” rescue biodiversity of the Yangtze River?

Cloud-IoT Resource Management Based on Artificial Intelligence for Energy Reduction

The rapid growth in demand for cloud services has led to the creation of large-scale data centers, which allows application service providers to lease data center capacity for application deployment as per user requirement in terms of quality of services (QoS). These data centers consume a lot of electrical power which contributes to increased operating costs and carbon dioxide emissions. In addition, modern cloud computing environments must provide QoS for their customers which leads them to a need to make a power-performance compromise that is to say in terms of energy consumption and service-level agreement (SLA) compliance. That is why, we introduce, in this paper, an intelligent resource management policy for cloud data centers. The goal is to dynamically allocate and continuously consolidate virtual machines taking advantage of live migration and disengage inactive nodes to minimize power feeding in this cloud environment while maintaining the quality of service. We integrate some artificial intelligence concepts to ensure a dynamic resource management and a better power-performance compromise and significantly reduce the consumed energy.

A Novel Technique for Accelerating Live Migration in Cloud Computing

A Novel Technique for Accelerating Live Migration in Cloud Computing

Look-ahead energy efficient VM allocation approach for data centers

Energy efficiency is an important issue for reducing environmental dissipation. Energy efficient resource provisioning in cloud environments is a challenging problem because of its dynamic nature and varied application workload characteristics. In the literature, live migration of virtual machines (VMs) among servers is commonly proposed to reduce energy consumption and to optimize resource usage, although it comes with essential drawbacks, such as migration cost and performance degradation. Energy efficient provisioning is addressed at the data center level in this research. A novel efficient resource management algorithm for virtualized data centers that optimizes the number of servers to meet the requirements of dynamic workloads without migration is proposed in this paper. The proposed approach, named Look-ahead Energy Efficient VM Allocation (LAA), contains a Holt Winters-based prediction module. Energy efficiency and performance are inversely proportional. The energy-performance trade-off relies on periodic comparisons of the predicted and active numbers of servers. To evaluate the proposed algorithm, experiments are conducted with real-world workload traces from Google Cluster. LAA is compared with the best approach provided by CloudSim based on VM migration called Local Regression-Minimum Migration Time (LR-MMT). The experimental results show that the proposed algorithm leads to a consumption reduction of up to 45% to complete one workload compared with the LR-MMT.

GiantVM: A Novel Distributed Hypervisor for Resource Aggregation with DSM-aware Optimizations

We present GiantVM, 1 an open-source distributed hypervisor that provides the many-to-one virtualization to aggregate resources from multiple physical machines. We propose techniques to enable distributed CPU and I/O virtualization and distributed shared memory (DSM) to achieve memory aggregation. GiantVM is implemented based on the state-of-the-art type-II hypervisor QEMU-KVM, and it can currently host conventional OSes such as Linux. (1) We identify the performance bottleneck of GiantVM to be DSM, through a top-down performance analysis. Although GiantVM offers great opportunities for CPU-intensive applications to enjoy the aggregated CPU resources, memory-intensive applications could suffer from cross-node page sharing, which requires frequent DSM involvement and leads to performance collapse. We design the guest-level thread scheduler, DaS (DSM-aware Scheduler), to overcome the bottleneck. When benchmarking with NAS Parallel Benchmarks, the DaS could achieve a performance boost of up to 3.5×, compared to the default Linux kernel scheduler. (2) While evaluating DaS, we observe the advantage of GiantVM as a resource reallocation facility. Thanks to the SSI abstraction of GiantVM, migration could be done by guest-level scheduling. DSM allows standby pages in the migration destination, which need not be transferred through the network. The saved network bandwidth is 68% on average, compared to VM live migration. Resource reallocation with GiantVM increases the overall CPU utilization by 14.3% in a co-location experiment.

Don’t Look Down

Don’t Look Down

(Legal) assistance in employment matters to low-paid EU migrant workers in the East of England

AbstractThis paper explores the everyday lives of low-paid, low-skilled EU migrant workers living in and around Great Yarmouth in the East of England both pre- and post-Brexit. It considers the legal problems they face, especially around employment law, and how those problems may be resolved. It draws on the results of quantitative and qualitative research to examine the reach of law into the everyday lives of vulnerable EU migrants. We term our research ‘pragmatic law’ (PL) because our experience is that most legal issues, at least with the groups we are working with, do not enter any formal legal resolution pathway at a community level. They are addressed in the everyday, often by first-tier generalist (and sometimes volunteer) advisers with no formal legal training, who make no express reference to ‘the law’. This access to advice and problem resolution at a street level can be a lifeline to those living at the margins of the workforce.

Early life migration and undernutrition among circular migrant children: An observational study in the brick kilns of Bihar, India.

BackgroundIndia holds the world's largest burden of chronic and acute child undernutrition. Poverty and systemic inequities are basic causes of undernutrition that also drive households to engage in circular migration for livelihood. Short-term, temporary movement of the whole family, including young children, is common; yet, the nutritional implications of recurrent movements beginning in early life has not been studied. We sought to estimate the association of repeat and early life migration with stunting and wasting outcomes among circular migrant children under three.MethodsUsing a stratified cluster design, we conducted two waves of primary data collection among 2564 randomly selected circular migrant children under three years of age temporarily residing across 1156 brick kilns in Bihar, India. We conducted multilevel modeling to estimate the association of the number of migration episodes and age at first migration with stunting (<-2 standard deviations (SD) height-for-age z scores (HAZ)) and wasting (<-2 SD weight-for-height z-scores (WHZ)) and examined the determinants of nutrition status among migrant children, including diet, illness, food security and the health environment.ResultsThe overall prevalence of stunting was 51.6%. Among children who were either born during migration or first migrated before six months of age, those who experienced multiple episodes of migration were more likely to be stunted compared to those who migrated once (adjusted odds ratio (aOR) = 2.10; 95% confidence interval (CI) = 1.30-3.41). Children were over three times as likely to be wasted in the summer compared to the winter (aOR = 3.28; 95% CI = 2.68-4.01); in the summer, the overall prevalence of wasting was 38.8%. Public health access indicators such as interaction with frontline health workers at the destination was low (5.3%), whereas feeding indicators such as exclusive breastfeeding among 0-5 months was high (81.1%).ConclusionsPolicy efforts should ensure continuity of social protection and welfare entitlements between home and destinations for circular migrant families, with an explicit focus on rural-to-rural movement.

Advancing a programme theory for community-level oral health promotion programmes for humanitarian migrants: a realist review protocol

IntroductionHumanitarian migrants often suffer from poor health, including oral health. Reasons for their oral health conditions include difficult migration trajectories, poor nutrition and limited financial resources. Oral health promotion is...

The Lifeworld of Women Domestic Workers: Some Case Studies

In the informal sector of metropolitan India, the participation of women domestic workers is steadily increasing. Women participate in domestic work to protect family interests and solve economic crises. Employers compel maximum work from domestic workers with the bare minimum of hospitality. If we consider domestic work on a global scale, it is a solution to the problem of women in the economic system. Domestic work is unorganized, unrewarding, and unrecognized for domestic workers. Women are migrating to domestic work in greater numbers every day, but there is a crucial need to consider their living conditions. Normally, most of the migrant population lives in slums. Migrants in domestic work and women are now a predominant research area for social sciences. This research aims to examine the lifeworld of women domestic workers.

Performance modeling for I/O‐intensive applications on virtual machines

AbstractModels for virtual machines running on cloud computing systems. Modeling system behaviors of clouds is a grand challenge because the resource utilization in VMs is heterogeneous due to variability in workload conditions. We address this challenging issue by uniquely (1) objectifying the usage prediction of virtualized resources and (2) predicting the performance trends of programs running on clouds. At the heart of the modeling system, we pay particular attention to CPU cores, disk size, main memory space, and input data volume, which serve as important factors for the developed prediction module. We devise two resource‐utilization prediction algorithms driven by two distinctive sets of I/O and CPU intensive benchmarks, where one algorithm deals with execution time and the other one revolves around input data size. We investigate the correlation between CPU/disk utilization and VM live migrations. Our system aims at not only providing performance optimization for virtualized resources but also ensuring service level agreement (SLA) and Quality of Service (QoS). The model fits the curve quite well, thereby advocating for the efficiency of the algorithm. The case studies conducted in this project draw the comparisons between the performance of striped and monolithic disks as well as bringing forth the problem of cache coherence that causes hindrance to the experiment. We also deal with the cache‐coherence problem to improve the accuracy of our prediction algorithms

The Meaning of Home in Male Migration: Listening to Men’s Experiences

We assessed the sense of psychological home among adult men (n = 17; M age = 29.7 years old) who had experienced migration to Italy, focusing on the relationship between psychological home and the process of integration into the new country. Psychological home is a dynamic process in which people sense a safe and secure environment that ranges beyond the confines of a structured dwelling, a process which is reflective and which communicates one’s self-identity. Participants engaged in a semistructured interview with the aim of establishing a generic concept of psychological home and identifying the issues that arise at the intersection of psychological home and migration. The results highlighted certain themes about the meaning that psychological home assumes in the lives of migrants and about the way in which the migration experience acts to support or hinder the process of building this sense of home. Of special interest is the idea that individuals might develop multiple psychological homes related to the different places and relationships that they experience. In this sense, establishment of a psychological home might be considered the ideal affective state for psychological adaptation to a new country.

Virtual Machine Consolidation using Roulette wheel selection Strategy

Cloud computing data centers are growing rapidly in both number and capacity to meet the increasing demands for highly-responsive computing and massive storage. Such data centers consume enormous amounts of electrical energy resulting in high operating costs and carbon dioxide emissions. The reason for this extremely high energy consumption is not just the quantity of computing resources and the power inefficiency of hardware, but rather lies in the inefficient usage of these resources. Virtual Machine [VM] consolidation involves live migration of VMs hence the capability of transferring a VM between physical servers with a close to zero down time. It is an effective way to improve the utilization of resources and increase energy efficiency in cloud data centers. VM consolidation consists of host overload/under load detection, VM selection and VM placement. In Our Proposed Model We are going to use Roulette-Wheel Selection Strategy, Where the VM selects the Instance type and Physical Machine [PM] using Roulette-Wheel Selection Mechanism Keywords—searchable encryption, dynamic update, cloud computing

Early life migration and population discrimination of the small yellow croaker Larimichthys polyactis from the Yellow Sea: inferences from otolith Sr/Ca ratios

Early life migration and population discrimination of the small yellow croaker Larimichthys polyactis from the Yellow Sea: inferences from otolith Sr/Ca ratios