4,462 research outputs found
Relativistic Mean Field in 80 nuclei and low energy proton reactions
Relativistic Mean Field calculations have been performed for a number of
nuclei in mass 80 region. Ground state binding energy, charge radius
and charge density values have been compared with experiment. Optical potential
have been generated folding the nuclear density with the microscopic nuclear
interaction DDM3Y. S-factors for low energy () and () reactions
have been calculated and compared with experiment.Comment: To appear in Physical Review
The Effect of Education on Smoking Behavior: New Evidence from Smoking Durations of a Sample of Twins
This paper analyses the effect of education on starting and quitting smoking, using longitudinal data of Australian twins. The endogeneity of education, censoring of smoking durations and the timing of starting smoking versus that of completion of education are taken into account by the flexible Mixed Proportional Hazard specification. Unobserved effects are assumed to be twin specific and possibly correlated with completed education years. We find that one additional year of education reduces the duration of smoking with 9 months but has no effect on the decision to start smoking.education, duration models, smoking
The 'nanobig rods' class of gold nanorods: optimized dimensions for improved in vivo therapeutic and imaging efficacy
Currently, gold nanorods can be synthesized in a wide range of sizes.
However, for intended biological applications gold nanorods with approximate
dimensions 50 nm x 15 nm are used. We investigate by computer simulation the
effect of particle dimensions on the optical and thermal properties in the
context of the specific applications of photoacoustic imaging. In addition we
discuss the influence of particle size in overcoming the following biophysical
barriers when administrated in vivo: extravasation, avoidance of uptake by
organs of the reticuloendothelial system, penetration through the interstitium,
binding capability and uptake by the target cells. Although more complex
biological influences can be introduced in future analysis, the present work
illustrates that larger gold nanorods, designated by us as "nanobig rods", may
perform relatively better at meeting the requirements for successful in vivo
applications compared to their smaller counterparts which are conventionally
used
Best Effort and Practice Activation Codes
Activation Codes are used in many different digital services and known by
many different names including voucher, e-coupon and discount code. In this
paper we focus on a specific class of ACs that are short, human-readable,
fixed-length and represent value. Even though this class of codes is
extensively used there are no general guidelines for the design of Activation
Code schemes. We discuss different methods that are used in practice and
propose BEPAC, a new Activation Code scheme that provides both authenticity and
confidentiality. The small message space of activation codes introduces some
problems that are illustrated by an adaptive chosen-plaintext attack (CPA-2) on
a general 3-round Feis- tel network of size 2^(2n) . This attack recovers the
complete permutation from at most 2^(n+2) plaintext-ciphertext pairs. For this
reason, BEPAC is designed in such a way that authenticity and confidentiality
are in- dependent properties, i.e. loss of confidentiality does not imply loss
of authenticity.Comment: 15 pages, 3 figures, TrustBus 201
Production of a T cell hybridoma that expresses the T cell receptor gamma/delta heterodimer.
We have produced a T cell hybridoma line by fusion of an IL-2-dependent, long-term T cell receptor (TCR) gamma/delta+ Thy-1+, bone marrow-derived, dendritic epidermal cell line to the BW5147 tumor line. The resultant hybridoma was rapidly growing, lymphokine independent, and expressed T3 in association with the TCR gamma/delta heterodimer. Several subclones of the hybridoma line produced easily detectable levels of IL-2 after stimulation by anti-T3 or Con A. The availability of these cloned cell lines should greatly facilitate further functional, biochemical, and molecular studies of the TCR delta chain
The Effect of Childhood Conduct Disorder on Human Capital
This paper estimates the longer-term effects of childhood conduct disorder on human capital accumulation and violent and criminal behaviour later in life using data of Australian twins. We measure conduct disorder with a rich set of indicators based on diagnostic criteria from psychiatry. Using ordinary least squares (OLS) and twin fixed effects (FE) estimation approaches, we find that early (pre-18) conduct disorder problems significantly affect both human capital accumulation and violent and criminal behaviour over the life course. In addition, we find that conduct disorder is more deleterious if these behaviours occur earlier in life.conduct disorder, human capital, twins
Pathways to Inclusion: Organizational Practices and Collaboration in the Least Restrictive Environment in a High School in Northern California
In the United States, the provision to educate all students with disabilities in their least restrictive environment (LRE) is outlined in the Individuals with Disabilities Education Act (IDEA, 2004). One way to support students’ education in their LRE is through a two-teacher inclusion (one special and one general educator) class. However, despite its potential benefits, the creation, implementation and support of LREs through inclusion classes have many challenges. In this research, an exploratory case study approach provided an opportunity to investigate the experiences of the principal, an assistant principal, and teachers in relation to the creation and implementation for LREs at Florence High School in Sheppard High School District (located in Northern California). The school name and district have been changed to protect the anonymity of the participants.
In total, there were ten participants in this study, including the principal, one assistant principal, and eight current and former inclusion teachers (special and general educators) from Florence High School have been included in the study as participants. Transcripts from participant interviews were analyzed in order to identify themes and patterns. The results of this study suggest that teachers and as well as the principal and assistant principal in this study are committed to supporting all students. However, teachers face obstacles in the implementation of LREs such as minimal professional development, a lack of time for collaboration to support student learning. Additionally, teachers at this school are seeking more opportunities to discuss schedules and partnerships. The recommendations are intended to provide insight into the organizational practices that support the inclusion model of teaching in an effort to effectively inform future relevant decision-making and expand inclusion at Florence High School
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