Reassembling Linux-based Hybrid RAID

Network-attached storage (NAS) is a system that uses a redundant array of disks (RAID) to create virtual disks comprising multiple disks and provide network services such as FTP, SSH, and WebDAV. Using these services, the NAS's virtual disks store data about individuals or groups, making them a critical analysis target for digital forensics. Well-known storage manufacturers like Seagate, Synology, and NETGEAR use Linux-based software RAID, and they usually support Berkeley RAID (e.g., RAID 0, 1, 5, 6, and 10) as well as self-developed hybrid RAID. Those manufacturers have published data on the introduction and features of hybrid RAID, but there is not enough information to reassemble RAID from a digital forensic perspective. Besides, digital forensic tools (such as EnCase, FTK, X-ways, and RAID Reconstructor) do not support automatic RAID reassembly for hybrid RAID, so research on hybrid RAID reassembly methods is necessary. This paper analyzes the disk array composed of hybrid RAID and explains the layout of disk array, partition layout in hybrid RAID, and hybrid RAID configuration strategy. Furthermore, it suggests parameters that are required for RAID reassembly and then propose a hybrid RAID reassembly procedure using them. Finally, we propose a proof-of-concept tool (Hybrid RAID Reconstructor) that identifies hybrid RAID from disk array and parse RAID parameters.     

Explicating Acculturation Strategies among Asian American Youth: Subtypes and Correlates across Filipino and Korean Americans

Acculturation strategy, a varying combination of heritage and mainstream cultural orientations and one of the significant determinants of youth development, has been understudied with Asian American youth and particularly at a subgroup-specific level. This study used person-oriented latent profile analysis (LPA) to identify acculturation strategy subtypes among Filipino American and Korean American adolescents living in the Midwest. Associations between the subtypes and numerous correlates including demographics, family process and youth outcomes were also examined. Using large scale survey data (N?=?1580; 379 Filipino American youth and 377 parents, and 410 Korean American youth and 414 parents; M_AGE of youth?=?15.01), the study found three acculturation subtypes for Filipino American youth: High Assimilation with Ethnic Identity, Integrated Bicultural with Strongest Ethnic Identity, and Modest Bicultural with Strong Ethnic Identity; and three acculturation subtypes for Korean American youth: Separation, Integrated Bicultural, and Modest Bicultural with Strong Ethnic Identity. Both Filipino American and Korean American youth exhibited immersion in the host culture while retaining a strong heritage identity. Although bicultural strategies appear most favorable, the results varied by gender and ethnicity, e.g., integrated bicultural Filipino Americans, comprised of more girls, might do well at school but were at risk of poor mental health. Korean American separation, comprised of more boys, demonstrated a small but significant risk in family process and substance use behaviors that merits in-depth examination. The findings deepen the understanding of heterogeneous acculturation strategies among Asian American youth and provide implications for future research.     

Political Trust,Ideology, and Public Support in the United States for Government Spending on Health Care

The U.S. health-care costs have increased at a rapid rate over the last several decades. How much responsibility the government should bear with the increase in health-care costs is one of the main questions that lack consensus among the American people. Utilizing the 2016 General Social Survey data, this study shows that over two-thirds of Americans want to see more or much more spending on health care by the government. An ordered logit regression model shows that political trust and ideology are significant correlates in predicting attitudes toward government spending on health care. The policy implications of the findings are discussed in the “Conclusion” section.     

Do Political Similarities Facilitate Interlocal Collaboration?

This research examines the extent to which political similarities—that is, homophily between political actors at the local level—affect patterns of interorganizational collaboration in an emergency response situation. While the field of emergency management has focused on implementation‐oriented arrangements among key stakeholders, few studies have systemically investigated the creation and development of interorganizational collaborations led by political actors, especially following catastrophic events. The analysis reveals that a dyadic tie with political homophily boosts local responders’ ties with other agencies during emergencies. Findings indicate that political solidarity, formulated by chief elected officials of municipalities and council members, can broaden the scope of interorganizational collaboration by mitigating institutional collective action problems at the local level. This research presents a critical recommendation for emergency managers that interlocal collaboration for timely response to a disaster is attributable to political similarities that facilitate frequent interlocal interactions through formal and/or informal agreements.     

Democratization and women’s representation in presidential cabinets: evidence from East and Southeast Asia

This article examines patterns of women’s cabinet representation across all presidential democracies in East and Southeast Asia since democratization. It demonstrates how the choice of female ministers differs across career backgrounds in presidential systems and further examines why young presidential systems in Asia are conducive to women’s access to ministerial power through professional career tracks. We argue that despite women’s successful performance in national legislative elections, women have been restricted to access the power resources necessary to target other political goals, such as cabinet positions, whereas democratic transition has provided broader avenues for women to emerge as professionals outside party politics. By analyzing original data on female ministers in East and Southeast Asia, the study finds that the share of women among professional ministers has increased over time, but women’s share among political ministers has not changed significantly. Additionally, the different qualifications of female politicians and professionals also make them eligible for appointment to different types of policy areas in terms of prestige and gender. Our analysis suggests that women’s cabinet representation has improved overall since democratic transition in Asia, but this improvement disguises contrasting outcomes in women’s cabinet status according to their career backgrounds.     

Temporary Loan Limits as a Natural Experiment in Federal Housing Administration Insurance

The Economic Stimulus Act of 2008 dramatically but temporarily increased the mortgage loan amount eligible for insurance through the Federal Housing Administration (FHA). We use the implementation and expiration of these loan limits as a source of exogenous variation in the availability of FHA insurance to measure the impact on the overall mortgage market and conventional lending. We find that the introduction of higher loan limits increased the number of loan originations, but that the expiration of those loan limits roughly 6 years later did not significantly decrease affected loan originations. The substitution between loan products and small net impact on the overall mortgage market when the ESA loan limits expired may be explained by the return of a stronger conventional lending industry than existed during the housing crisis.     

Lifestyles/Routine Activities and Bullying among South Korean Youths

Research on bullying has been conducted primarily in the United States and other western cultures, with less attention paid to the magnitude and sources of the problem in eastern cultures. Framed within lifestyle/routine activities theories, we examined a random sample of 3,121 South Korean middle-school students in order to assess the main effects of factors reflecting guardianship, target suitability, and exposure to motivated offenders on a youth’s risk of being bullied by groups of juveniles. Latent growth curve modeling was used to estimate both cross-sectional and longitudinal effects on self-reported victimizations involving “collective” bullying. Findings and their theoretical implications are presented.