Spectral Variations in Early-Type Galaxies as a Function of Mass

We report on the strengths of three spectral indicators - Mg_2, Hbeta, and Hn/Fe - in the integrated light of a sample of 100 field and cluster E/S0 galaxies. The measured indices are sensitive to age and/or and metallicity variations within the galaxy sample. Using linear regression analysis for data with non-uniform errors, we determine the intrinsic scatter present among the spectral indices of our galaxy sample as a function of internal velocity dispersion. Our analysis indicates that there is significantly more intrinsic scatter in the two Balmer line indices than in the Mg_2 index, indicating that the Balmer indices provide more dynamic range in determining the age of a stellar population than does the Mg_2 index. Furthermore, the scatter is much larger for the low velocity dispersion galaxies, indicating that star formation has occurred more recently in the lower mass galaxies.Comment: 4 pages, 1 figure, 1 table, to appear in the Astrophysical Journal Letter

Android third-party library detection

Third-party library analysis research is important to many research fields like program analysis, clone-detection, security and privacy. There are many considerations taken when developing a third-party library analysis approach. The approach must be resilient to common obfuscation techniques and be able to determine similarity between two libraries with a high level of confidence. This paper explores this research and the problems that have been solved and reviews the improvements and shortcomings within the third-party library analysis field

Massachusetts County Government: A Viable Institution?

County government has had an impact on the lives of the people of Massachusetts since 1643, predating the American federal system by well over a century. The various services that county government provides, and has provided in the past, are essential to the residents of those counties. Despite such an extensive history, counties in Massachusetts, and New England as a whole, are distinct from other counties throughout the nation. Deviating from many states, the functions and duties typically performed by a county are performed by the state government or by cities in Massachusetts. In an era where we continually seek to “trim the fat” from all aspects of government, taking a look at what our counties do, and what others have done is an important exercise in the world of state and local government

Diversity and structure of human T-Cell receptor β-chain variable region genes

The nucleotide sequences of 27 T-cell receptor β cDNA clones isolated from a human peripheral lymphocyte library were determined and compared to five additional published sequences. These cDNA clones represent 22 distinct T-cell receptor β-chain variable region (Vβ) gene segment sequences, which fall into 15 different Vβ gene subfamilies, each containing six or fewer members. From this analysis, we estimate that the repertoire of expressed human Vβ genes is <59, apparently much smaller than the immunoglobulin heavy chain and light chain variable region (VH and VL) repertoires. Variability plots comparing these human Vβ regions with each other and with published mouse Vβ regions provide evidence for only four hypervariable regions homologous to those seen in comparisons of immunoglobulin V regions. Somatic hypermutation appears to be used infrequently, if at all, in these Vβ genes

Disclosing Machine Inputs and Outputs: The Vulnerability of Legal Technology in Civil Discovery

Smart technology has begun to infiltrate nearly every corner of society. While the legal profession managed to resist this intrusion relative to other industries for many years, it is now undeniable that machines frequently supplement lawyers and civil procedures such as discovery will need to adapt. As litigants, usually the well-resourced ones, increasingly utilize machine intelligence, concerns about accuracy and unfair advantage have sprung up on the other side of technology use. Information asymmetry is exacerbated when technology is accessible to only one party, and, consequently, curious litigants may seek discovery about the technology’s implementation in the context of the dispute. Thus, as law firms and corporate legal departments consider whether and how to integrate emerging technologies into their operations, it will be important to know their exposure to litigation. This paper provides suggestions for whether, and to what extent, parties should be able to obtain discovery about an opponent’s tools, including their machine inputs and outputs. After reviewing the discovery process broadly, this paper will walk through three of the most common and relevant technologies, including technology-assisted review in discovery productions, predictive analytics for forecasting outcomes, and document generation for creating legal documents. If a party demands to see the details behind the use of one of these technologies, should the court compel production? This paper offers several considerations for judges in exercising their discretion to answer this question

Alien Registration- Concannon, Delia (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/25336/thumbnail.jp