Invasive Species by Claire Caldwell

A review of Claire Caldwell\u27s debut poetry collection, Invasive Species

Generic changes in United States Issini (Hemiptera, Fulgoroidea, Issidae)

Three new genera of the family Issidae are described for species formerly included in the genus Hysteropterum sensu lato: Balduza Gnezdilov and O’Brien, gen. n. (type species: Hysteropterum unum Ball 1910), Stilbometopius Gnezdilov and O’Brien, gen. n. (type species: Issus auroreus Uhler 1876), Abolloptera Gnezdilov and O’Brien, gen. n. (type species: Hysteropterum bistriatum Caldwell 1945),. The genus Tylanira Ball 1936 is redescribed. The male genitalia of Tylanira bifurca Ball 1936 is described and illustrated. Tylana ustulata Uhler 1876 is transfered to Tylanira. Hysteropterum bufo Van Duzee 1923 is transfered to Balduza gen. n. and the male genitalia of the species is described and illustrated. The subgenus Paralixes Caldwell 1945 of the genus Ulixes Stål 1861 is raised to genus – Paralixes Caldwell 1945, stat. n. A key to the issid genera of the United States is given. New data on the distribution of 7 species are given

A New Era in the Quest for Dark Matter

There is a growing sense of `crisis' in the dark matter community, due to the absence of evidence for the most popular candidates such as weakly interacting massive particles, axions, and sterile neutrinos, despite the enormous effort that has gone into searching for these particles. Here, we discuss what we have learned about the nature of dark matter from past experiments, and the implications for planned dark matter searches in the next decade. We argue that diversifying the experimental effort, incorporating astronomical surveys and gravitational wave observations, is our best hope to make progress on the dark matter problem.Comment: Published in Nature, online on 04 Oct 2018. 13 pages, 1 figur

2νββ2\nu\beta\beta decay of 76^{76}Ge into excited states with GERDA Phase I

Two neutrino double beta decay of $^{76}$Ge to excited states of $^{76}$Se has been studied using data from Phase I of the GERDA experiment. An array composed of up to 14 germanium detectors including detectors that have been isotopically enriched in $^{76}$Ge was deployed in liquid argon. The analysis of various possible transitions to excited final states is based on coincidence events between pairs of detectors where a de-excitation $\gamma$ ray is detected in one detector and the two electrons in the other. No signal has been observed and an event counting profile likelihood analysis has been used to determine Frequentist 90\,\% C.L. bounds for three transitions: ${0^+_{\rm g.s.}-2^+_1}$: $T^{2\nu}_{1/2}>$1.6$\cdot10^{23}$ yr, ${0^+_{\rm g.s.}-0^+_1}$: $T^{2\nu}_{1/2}>$3.7$\cdot10^{23}$ yr and ${0^+_{\rm g.s.}-2^+_2}$: $T^{2\nu}_{1/2}>$2.3$\cdot10^{23}$ yr. These bounds are more than two orders of magnitude larger than those reported previously. Bayesian 90\,\% credibility bounds were extracted and used to exclude several models for the ${0^+_{\rm g.s.}-0^+_1}$ transition

Isolated tau leptons in events with large missing transverse momentum at HERA

A search for events containing isolated tau leptons and large missing transverse momentum, not originating from the tau decay, has been performed with the ZEUS detector at the electron-proton collider HERA, using 130 pb^-1 of integrated luminosity. A search was made for isolated tracks coming from hadronic tau decays. Observables based on the internal jet structure were exploited to discriminate between tau decays and quark- or gluon-induced jets. Three tau candidates were found, while 0.40 +0.12 -0.13 were expected from Standard Model processes, such as charged current deep inelastic scattering and single W-boson production. To search for heavy-particle decays, a more restrictive selection was applied to isolate tau leptons produced together with a hadronic final state with high transverse momentum. Two candidate events survive, while 0.20 +-0.05 events are expected from Standard Model processes.Comment: 28 pages, 4 figures, 3 tables, accepted by Phys. Lett. B. Updated with minor changes to the text requested by the journal refere

Human Resource Professionals as Strategic Leaders — A Behavioral Opportunity for Improving Information Management

Human Resource Management is an often overlooked and underutilized strategic tool that has the potential to shape organizational objectives. Authors Caldwell and Ndalamba attempt to identify when, where, and in what fashion HR sources can be more fully utilized to coordinate and fully develop an entity’s interlinking structure to achieve a successful, common purpose

New taxa and combinations in Neotropical Issidae (Hemiptera: Fulgoroidea)

Six new genera are erected as follows: in the Issini, Argepara gen. n. (type species: Hysteropterum semipellucidum Melichar, 1906), Aztecus gen. n. (type species: Hysteropterum montezuma Kirkaldy, 1913), Incasa gen. n. (type species: Hysteropterum riobambae Schmidt, 1910), Bumaya gen. n. (type species: Bumaya knorozovi sp. n.); and in the Colpopterini, Caudibeccus, gen. n. (type species: Colpoptera carlota Myers, 1928) and Jamaha gen. n. (type species: Poeciloptera elevans Walker, 1858). Four new generic synomymies are proposed: Prothona Caldwell, 1945 and Plummerana Caldwell, 1945 are placed in synonymy under Proteinissus Fowler, 1904. Thionissa Metcalf, 1938 is placed in synonymy under Dracela Signoret, 1861. Hesperophara Kirkaldy, 1904 is placed in synonymy under Colpoptera Burmeister, 1835. Twenty-three new combinations resulting from generic synonymies or transfer of species into new genera are: Argepara lyra (Berg, 1883), Argepara semipellucida (Melichar, 1906), Aztecus auroriferus (Caldwell, 1945), Aztecus erratus (Caldwell, 1945), Aztecus mexicanus (Kirkaldy, 1909), Aztecus montezuma (Kirkaldy, 1913), Aztecus sierrae (Fowler, 1904), Aztecus viridatus (Caldwell, 1945), Caudibeccus carlota (Myers, 1928), Caudibeccus lucaris (Fennah, 1955), Caudibeccus meleagris (Fennah, 1955), Caudibeccus punctatus (Metcalf, 1954), Colpoptera rustica (Fabricius, 1803), Dracela acuta (Metcalf, 1938), Incasa riobambae (Schmidt, 1910), Jamaha chrysops (Fennah, 1955), Jamaha elevans (Walker 1858), Paralixes fowleri (Melichar, 1906), Proteinissus isolatus (Caldwell, 1945), Proteinissus pentagonatus (Caldwell, 1945), Proteinissus punctatus (Caldwell, 1945), Proteinissus reticulatus (Caldwell, 1945), Proteinissus viridus (Caldwell, 1945). Three new species are described: Bumaya knorozovi sp. n. from Belize and Mexico, Traxus kasparyani sp. n. from Mexico, and Caudibeccus emeljanovi sp. n. from Cuba. The description of T. kasparyani represents the first Mexican country record for the genus Traxus Metcalf. The species Hysteropterum acanthum Caldwell, 1945 is placed in synonymy under Aztecus montezuma (Kirkaldy, 1913). Colpoptera sinuata Burmeister, 1835 is redescribed. New country records are presented for A. semipellucida from Argentina, A. lyra from Paraguay and Uruguay, D. acuta from Ecuador, and D. annulipes Signoret, 1861 from Brazil, Peru, and Ecuador. Keys to the species of the genera Aztecus gen. n., Argepara gen. n., Traxus Metcalf, and Dracela Signoret are given. An ant association is recorded for the first time for A. lyra

Observation of Scaling Violations in Scaled Momentum Distributions at HERA

Charged particle production has been measured in deep inelastic scattering (DIS) events over a large range of $x$ and $Q^2$ using the ZEUS detector. The evolution of the scaled momentum, $x_p$, with $Q^2,$ in the range 10 to 1280 $GeV^2$, has been investigated in the current fragmentation region of the Breit frame. The results show clear evidence, in a single experiment, for scaling violations in scaled momenta as a function of $Q^2$.Comment: 21 pages including 4 figures, to be published in Physics Letters B. Two references adde

Spectral Distortion in a Radially Inhomogeneous Cosmology

The spectral distortion of the cosmic microwave background blackbody spectrum in a radially inhomogeneous spacetime, designed to exactly reproduce a LambdaCDM expansion history along the past light cone, is shown to exceed the upper bound established by COBE-FIRAS by a factor of approximately 3700. This simple observational test helps uncover a slew of pathological features that lie hidden inside the past light cone, including a radially contracting phase at decoupling and, if followed to its logical extreme, a naked singularity at the radially inhomogeneous Big Bang.Comment: 16 pages, 8 figures (added references and clarified discussion; some numbers revised