Jewish Community Study of New York: 2011 Special Report on Poverty

The sheer scale of needs associated with being poor or near poor dwarfs the resources of even the largest Jewish community in the United States. One is tempted to believe that the scale of need is so vast that the Jewish community should abandon this field to others.Yet since the earliest days of Jewish communal life in New York, the organized Jewish community has accepted its responsibilities to care for those in need. Even since the New Deal, when the federal government took on the primary role of providing a societal safety net, the Jewish community has been active in providing philanthropic support and services for poor and near-poor Jews.The numbers of poor and near-poor Jewish households, the enormous increase in the number of these households over the past 20 years, and the diverse groups affected by poverty create an imperative for an extraordinary response -- from government, the voluntary sector, the philanthropic sector, and all segments of society. These findings suggest that the organized Jewish community needs to take a hard look at current planning, advocacy, service delivery, and resource investment

A combinatorial identity for studying Sato-Tate type problems

We derive a combinatorial identity which is useful in studying the distribution of Fourier coefficients of L-functions by allowing us to pass from knowledge of moments of the coefficients to the distribution of the coefficients.Comment: This paper contains the proof of a combinatorial identity used to study effective equidistribution laws for the Fourier coefficients of elliptic curve L-functions investigated by the first two authors in http://arxiv.org/abs/1004.275

A MODEL FOR EVALUATING THE PERFORMANCE OF OPERATIONAL LEVEL INFORMATION HANDLING ACTIVITIES

This paper describes a modeling framework that will allow a manager to simulate and evaluate the performance of alternative designs of an operational level information handling process. Performance is measured in terms of the quality of the OutputS of the process, the total flow time through the process, and the human resource time required to produce an output. The two major design options represented in the model are capabilities of computerized information systems used, and characteristics of quality control mechanisms within the information handling process. Based on the field study, we elaborate on why the problem of designing information flows in an office is difficult and we describe some of the complexities that need to be considered in a performance evaluation model. This paper presents a summary of the methodology for representing an information handling process, and an example of how the methodology can be used to address a design problem at the field site

1H NMR investigation of the magnetic spin configuration in the molecule-based ferrimagnet [MnTFPP][TCNE]

Journal Article1H NMR line-shape measurements have been performed in the linear chain molecule-based ferrimagnet [MnTFPP][TCNE].xPhMe (TFPP=tetrakis(4-fluorophenyl)porphinato; TCNE=tetracyanoethylene) as a function of temperature. Hyperfine shifts of opposite sign were observed indicating the presence of two oppositely hyperfine couplings, predominantly between the Mn ions and the 1H nuclei of the planar ring of the [MnTFPP]+ unit. The observation of the hyperfine shifts strongly suggests the existence of two oppositely directed [MnTFPP]+ sites. Since there is no direct exchange coupling between adjacent [MnTFPP] spins, then it can be argued that an ordered spin configuration with antiparallel components may arise from antisymmetric spin-spin exchange interactions. The field independence of the hyperfine shifts at low temperatures and for applied magnetic fields in the range 2-5 T, indicates the presence of ferromagnetic interactions in the ground state of the ferrimagnetic chain

Using crowdsourced geospatial data to aid in nuclear proliferation monitoring

In 2014, a Defense Science Board Task Force was convened in order to assess and explore new technologies that would aid in nuclear proliferation monitoring. One of their recommendations was for the director of National Intelligence to explore ways that crowdsourced geospatial imagery technologies could aid existing governmental efforts. Our research builds directly on this recommendation and provides feedback on some of the most successful examples of crowdsourced geospatial data (CGD). As of 2016, Special Operations Command (SOCOM) has assumed the new role of becoming the primary U.S. agency responsible for counter-proliferation. Historically, this institution has always been reliant upon other organizations for the execution of its myriad of mission sets. SOCOM's unique ability to build relationships makes it particularly suited to the task of harnessing CGD technologies and employing them in the capacity that our research recommends. Furthermore, CGD is a low cost, high impact tool that is already being employed by commercial companies and non-profit groups around the world. By employing CGD, a wider whole-of-government effort can be created that provides a long term, cohesive engagement plan for facilitating a multi-faceted nuclear proliferation monitoring process.http://archive.org/details/usingcrowdsource1094551570Major, United States ArmyMajor, United States ArmyApproved for public release; distribution is unlimited

Reentrance in the Mn(tetracyanoethylene)x.y(CH2Cl2) high-Tc molecule-based ferrimagnet

Journal ArticleResults of static and dynamic magnetic studies of the compound Mn(TCNE)x•y(CH2Cl2) (TCNE =tetracyanoethylene) are reported. Curie-Weiss analysis of the high-temperature susceptibility data indicates a relatively strong exchange. The ac susceptibility, measured as a function of frequency and temperature, reveals frequency-independent peaks in both the in-phase and out-of-phase components of the susceptibility near 75 K. Additional peaks in both components, which are frequency dependent, are observed near 10 K. Weak irreversibilities, including a remanent moment and a bifurcation of the field-cooled (FC) and zero-field-cooled (ZFC) dc magnetizations are observed below 75 K. These irreversibilities become more pronounced below -10 K. The presence of frequency dependence in the ac susceptibility and field dependence of the FC/ZFC magnetizations near 10 K but not at 75 K strongly suggest reentrance. Static scaling analysis at the high-temperature transition and dynamic scaling analysis at the low-temperature transition provide clear evidence for ordering with a spontaneous moment at 75 K and as a spin glass below 10 K. Possible mechanisms for this behavior are discussed

Linear chain ferromagnetic charge transfer compounds

Journal ArticleCharge transfer complexes possessing a ... DADA ... structure with both the donor, D, and acceptor, A, being S = 1/2 radicals may exhibit cooperative magnetic phenomena. The complex [Fe(C5Me5)2]+ [TCNQ]-. exhibits metamagnetic behavior. The similarly structured [TCNE]-. and [C4(CN)6]-. complexes are ferromagnets, whereas the [DDQ]-. salt is a paramagnet. The high temperature magnetic susceptibility obeys the Curie-Weiss expression with 0 = + 30, + 30, and + 3 for the [TCNE]-., [C4(CN)6]-., and [TCNQ]-. salts, respectively. The ferromagnetic [TCNE]-. salt exhibits zero field Zeeman split 57Fe Mossbauer spectra with an internal field of 425.6 kOe at 4.23 K. After reviewing the current papers discussing ferromagnetism in molecular (organic) compounds, a qualitative model consistent with the necessary bulk spin alignment required for a ferromagnet is presented

Eigenvalue Spacing Distribution for the Ensemble of Real Symmetric Toeplitz Matrices

Consider the ensemble of Real Symmetric Toeplitz Matrices, each entry iidrv from a fixed probability distribution p of mean 0, variance 1, and finite higher moments. The limiting spectral measure (the density of normalized eigenvalues) converges weakly to a new universal distribution with unbounded support, independent of p. This distribution's moments are almost those of the Gaussian's; the deficit may be interpreted in terms of Diophantine obstructions. With a little more work, we obtain almost sure convergence. An investigation of spacings between adjacent normalized eigenvalues looks Poissonian, and not GOE.Comment: 24 pages, 3 figure

Lattice- and spin-dimensionality crossovers in a linear-chain-molecule-based ferrimagnet with weak spin anisotropy

Journal Article[MnOEP][HCBD], a member of the metalloporphyrin family of donor-acceptor molecule-based magnets, consists of isolated ferrimagnetic chains of alternating S=2, [MnOEP], and s=1/2, [HCBD] units (OEP=octaethylporphyrinato and HCBD=hexacyanobutadiene). Analysis of the exchange pathways reveals an exchange along one interchain axis (Jinter) almost 3 orders of magnitude weaker than the intrachain exchange (Jintra), and a negligible exchange along the other interchain axis. From the susceptibility and magnetization data we determine Jintra and Jinter to be antiferromagnetic with values of -172 K and -0.4 K, respectively. At 19.6 K, the system undergoes both lattice and spin dimensionality crossovers in which the ferrimagnetic chains couple antiferromagnetically as two-dimensional Ising sheets. [S0163-1829(97)01625-1