Descrambling data on solid-state disks by reverse-engineering the firmware

Data recovery is an important component of digital forensic research. Although recovering data from hard drives or small-scale mobile devices has been well studied, solid-state disks (SSDs) have a very different internal architecture and some additional functions, and it is not clear whether these differences will have an effect on data recovery. Data scrambling is an additional function of an SSD controller which can improve data reliability, but makes data recovery difficult. In this research, the dedicated flash software was first introduced that can acquire the physical image of an SSD without destroying the device hardware. Based on the software, a validation experiment was presented to evaluate the effect of data scrambling on data recovery and the causes of the effect were analyzed. Then two approaches to descrambling the data in the flash chips were proposed and their advantages and disadvantages discussed. After that, a procedure to identify the scrambling seeds that are used to descramble the scrambled data was described. Finally, descrambling software was implemented based on the second descrambling method. The experiment shows that this software can successfully descramble the data from an SSD flash drive regardless of the internal structure of the scrambler in the SSD controller and can generate an unscrambled physical image on which most existing data-recovery techniques can be effective.     

Pension Programs Around the World: New Comparative Global Policy Data

Abstract

Income protection during old age is a universally recognized human right. Are nations fulfilling their responsibility for income support for older adults? Using a new global dataset on social protection conceptualized and built by two of the authors, this paper examines whether countries have legislated for national pension systems, and the characteristics and adequacy of those systems.     

正确对待高校的体育教学和课余训练

体育教学与课余训练是全体与个体、普及与提高、面向全体与发展特长的关系 ,在高校体育工作中都必须加以重视 ,不能只重视某一个方面而疏忽另一个方面。在教学过程中 ,要协调好两者的关系 ,实现以教学带动训练 ,以训练促进教学的良性循环 ,全面完成学校的体育工作。     

论劳动教养立法的几个基础性问题——建立我国轻罪处罚制度的理论创新

轻罪处罚制度的不足是我国刑事立法和刑事司法制度中的一个板块性缺损。中国刑事立法犯罪概念的特点决定了中国刑法上的犯罪实际上是严重或较为严重的犯罪 ,而不包括轻罪 ,因此 ,应当以劳动教养立法为契机建立中国的轻罪处罚体系。轻罪处罚法律制度的建立和完善 ,在理论和实践两个方面都面临一系列必须回答的基本问题。这些问题的解决除了需要立法和司法等方面的客观条件外 ,还需要具有根本性意义的理论创新。这就需要从理论上形成和提出问题 ,并给予科学的说明 ,为轻罪处罚制度提供必需的理论支撑。     

色彩平衡：从物理概念到色调控制

基于计算机屏幕、基于人眼与基于印刷品的色彩有着不同的物理属性。进行图像设计时要针对不同的应用领域,正确把握色彩的物理性质,选择恰当的色彩模式,对色调进行准确控制,避免输出作品时产生的缺色和溢色现象,以达到最佳色彩平衡。     

Childhood Abusive and Supportive Experiences, Inter-Parental Violence, and Parental Alcohol Use: Prediction of Young Adult Depressive Symptoms and Aggression

Issues in both the children of alcoholics and child abuse literatures were addressed in an attempt to disentangle the effects on young adults of growing up in alcoholic homes versus abusive homes. Using multiple regression, retrospective reports of parental abuse (emotional, physical, and sexual) and parental support (love/support, independence, and fairness), witnessing violence between parents, and parental alcohol use were used as predictor variables for outcomes noted by both literatures. When the effects of all other predictors were statistically controlled, parental alcohol use was not significantly related to depressive symptoms or aggression. Different abusive and supportive behaviors, depending on sex of parent and sex of participant, were significant predictors of both depression and aggression. Results underscore the importance of including and controlling for inter-parental violence and for different types of child abuse (especially emotional abuse) and parental supportive behaviors in investigations of outcomes related to abusive and alcoholic families. Implications for treatment of individuals from these families are discussed.     

Relationships Between Adult Women’s Mental Health Problems and their Childhood Experiences of Parental Violence and Psychological Aggression

We used the Parent-Child Conflict Tactics Scales (M. A. Straus, S. L. Hamby, D. Finkelhor, D. W. Moore, & D. Runyan, 1998) to assess retrospectively women’s childhood experiences of both mother and father physical abuse and psychological aggression, and assessed mother and father alcohol problems based on criteria derived from the Family History Research Diagnostic Criteria (N. C. Andreasen, J. Endicott, R. L. Spitzer, & G. Winokur, 1977). Data were collected from 447 women (age 18 or higher) from seven domestic violence programs and five substance use disorder treatment programs in a midwestern state. Using OLS regression with backward elimination (p < .10 as criterion for removal from the equation) we found that higher levels of mother physical abuse, father psychological aggression, and presence of mother alcohol problems predicted higher scores on the Beck Anxiety Inventory and Trauma Symptom Checklist. Higher levels of mother physical abuse and father psychological aggression predicted higher scores on the Beck Depression Inventory. Implications for research and practice are discussed.

Coparent Support and Conflict in African American Single Mother-Headed Families: Associations With Maternal and Child Psychosocial Functioning

This longitudinal investigation examined main and interactive effects of coparent support and conflict on mother and child adjustment in 248 low-income, African American, single mother-headed families. The findings indicated that coparent conflict was a more robust predictor of mother and child maladjustment both cross-sectionally and longitudinally than was coparent support. Moreover, findings revealed that coparent conflict and support interacted to predict one parenting behavior, monitoring, both cross-sectionally and longitudinally. Coparent relationships characterized by high levels of support and low levels of conflict were associated with the highest levels of parental monitoring behavior, whereas coparent relationships characterized by low levels of support and high levels of conflict were associated with the lowest levels of monitoring. The findings highlight the importance of examining both positive and negative aspects of coparent relationships in this at-risk, but understudied, group.     

A Participant Evaluation of the U.S. Navy Parent Support Program

This study reports on the results of a program evaluation of the U.S. Navy New Parent Support Program (NPSP). NPSP is comprised of two components: center-based parenting classes and home-based visits. Data are presented on: (a) satisfaction with program quality, (b) how well the program met its primary objectives (e.g., helps reduce parenting stress), (c) how well the NPSP met its Reasons for Being (RFBs; e.g., Helps service members concentrate on their job), and (d) program impact on mission-related outcomes (i.e., quality of life (QOL), readiness, and program impact on their decision to remain in the military). Results indicate that parents who take part in both the parenting classes and home-based visits report that the program exceeded their expectations, the program improved their perceptions of their parenting and coping skills, they perceived that the program demonstrated the Navy’s concern for Sailors and their families, and the program enhanced the family’s quality of life. Implications of study findings are discussed.