A Hardware Descriptive Approach to Beetle Antennae Search

Beetle antennae search (BAS) is a newly developed meta-heuristic algorithm which is effectively used for optimizing objective functions of complex forms or even unknown forms. The common practice for implementing meta-heuristic algorithms including the BAS largely relies on programming in a high-level language and executing the code on a computer platform. However, the high-level implementation of the BAS algorithm hinders it from being used in an embedding system, where real-time operations are normally required. To address this limitation, we present an approach to implementing the BAS algorithm on a field-programmable gate array (FPGA). Specifically, we program the BAS function in the Verilog hardware description language (HDL), which provides a tractable vehicle for implementing the BAS algorithm at the gate level on the FPGA chip. We simulate our Verilog HDL based BAS module with the Modelsim platform. Simulation results validate the feasibility of our proposed Verilog HDL implementation of the BAS. Additionally, we implement the BAS model on the Zynq XC7Z010 platform, with 132.5 μ s latency for model implementation

A bird in the hand is worth two in the book: development and assessment of a teacher- and student-friendly invertebrate learning kit for middle school

This thesis began as a search for evidence to support the hypothesis that children using live animals as interactive learning tools in middle school classrooms would have a higher understanding of biological concepts than those who did not use live animals in their classroom. Educational invertebrate kits including three sets of hands-on lessons using live animals were developed for this project. Experimental groups of students used live animals as a part of their learning as complementary control groups learned similar concepts without the use of animals. Four (4) Middle School teachers from around Iowa participated along with over 200 6-8th grade students. Data showed that no significant difference existed between the test scores of control and experimental groups as a whole; however, interesting differences surfaced regarding gender differences

Biologically Inspired Design of Context-Aware Smart Products

The rapid development of information and communication technologies (ICTs) and cyber–physical sys-tems (CPSs) has paved the way for the increasing popularity of smart products. Context-awareness isan important facet of product smartness. Unlike artifacts, various bio-systems are naturally characterizedby their extraordinary context-awareness. Biologically inspired design (BID) is one of the most commonlyemployed design strategies. However, few studies have examined the BID of context-aware smart prod-ucts to date. This paper presents a structured design framework to support the BID of context-awaresmart products. The meaning of context-awareness is defined from the perspective of product design.The framework is developed based on the theoretical foundations of the situated function–behavior–structure ontology. A structured design process is prescribed to leverage various biological inspirationsin order to support different conceptual design activities, such as problem formulation, structure refor-mulation, behavior reformulation, and function reformulation. Some existing design methods and emerg-ing design tools are incorporated into the framework. A case study is presented to showcase how thisframework can be followed to redesign a robot vacuum cleaner and make it more context-aware.Ó2019 THE AUTHORS. Published by Elsevier LTD on behalf of Chinese Academy of Engineering andHigher Education Press Limited Company. This is an open access article under the CC BY-NC-ND licens

The Bee\u27s Knees or Spines of a Spider: What Makes an \u27Insect\u27 Interesting?

Insects and their kin (bugs) are among the most detested and despised creatures on earth. Irrational fears of these mostly harmless organisms often restrict and prevent opportunities for outdoor recreation and leisure. Alternatively, Shipley and Bixler (2016) theorize that direct and positive experiences with bugs during middle childhood may result in fascination with insects leading to comfort in wildland settings. The objective of this research was to examine and identify the novel and unfamiliar bug types that people are more likely to find interesting and visually attend to when spontaneously presented with their images. This research examined these questions through four integrated exploratory studies. The first study (n = 216) found that a majority of adults are unfamiliar with a majority of bugs, despite the abundance of many common but ˜unfamiliar\u27 bugs. The second (n = 15) and third (n = 308) study examined participant\u27s first impressions of unfamiliar bugs. The second study consisted of in-depth interviews, while the third study had participants report their perceptions of bugs across multiple emotional dimensions. Together, both studies suggest there are many unfamiliar bugs that are perceptually novel and perceived as interesting when encountered. The fourth study (n = 48) collected metrics of visual attention using eye-tracking by measuring visual fixations while participants viewed different bugs identified through previous studies as either being interesting or disinteresting. The findings of the fourth study suggest that interesting bugs can capture more visual attention than uninteresting bugs. Results from all four studies provide a heuristic for interpretive naturalists, magazine editors, marketers, public relation advisors, filmmakers, and any other visual communication professional that can be used in the choice of images of unfamiliar images of insects and other small invertebrates to evoke situational interest and motivate subsequent behavior

Biodiversity: Its Measurement and Metaphysics

Biodiversity is a concept that plays a key role in both scientific theories such as the species-area law and conservation politics. Currently, however, little agreement exists on how biodiversity should be defined, let alone measured. This has led to suggestions that biodiversity is not a metaphysically robust concept, with major implications for its usefulness in formulating scientific theories and making conservation decisions. A general discussion of biodiversity is presented, highlighting its application both in scientific and conservation contexts, its relationship with environmental ethics, and existing approaches to its measurement. To overcome the limitations of existing biodiversity concepts, a new concept of biocomplexity is proposed. This concept equates the biodiversity of any biological system with its effective complexity. Biocomplexity is shown to be the only feasible measure of biodiversity that captures the essential features desired of a general biodiversity concept. In particular, it is a well-defined, measurable and strongly intrinsic property of any biological system. Finally, the practical application of biocomplexity is discussed

Phylogenetics of the keratin-feeding beetle family Trogidae (Coleoptera: Scarabaeoidea)

Trogidae constitute a monophyletic and biologically unique family within the Scarabaeoidea, being the only keratinophagous group in its superfamily. Traditionally, the family has been divided into three distinctive genera, Omorgus Erichson, Polynoncus Burmeister, and Trox Fabricius. Although the taxonomy of the group is relatively well studied, recently changes to the existing classification have been proposed without the family as currently constituted being subjected to phylogenetic analyses. In this study I present the first molecular phylogeny for this cosmopolitan family, based on three partially sequenced gene regions: 16SrRNA, 18S rRNA and 28S rRNA domain 2. Analyses resolved relationships between and within genera and subgenera that are largely congruent with existing taxonomic hypotheses based on morphology. I recovered four well-supported radiations: Polynoncus, Omorgus, Holarctic Trox and Afrotropical Phoberus. One of the more surprising results was the monophyly of Phoberus. Based on the evidence, I propose reinstating the genus Phoberus to accommodate all Afrotropical (including Madagascan endemic) species. The results re-emphasise the validity of Scholtz’s (1986a) classification system for the genus Omorgusand its subgeneraand provide evidence of an African origin for Madagascan trogids. Divergence analysis was able to date the major events for the origin of extant lineages of Trogidae. The subsequent diversification of the major lineages is largely attributed to Pangaean and Gondwanan vicariance events in the Mid-Jurassic and early Late Cretaceous, respectively. The separation of the landmasses resulted in the evolution of four distinct groups: Omorgus, Polynoncus, Trox and Phoberus. The monophyletic subgenus Phoberus MacLeay is of particular interest; about one-third (14 of 40) of the species in the Afrotropical region have lost the ability to fly. To gain insights into the evolution of flightlessness in this clade, phylogenetic relationships among species were inferred using molecular sequence data. Four partial sequences of four genes (COI, 16S, 18S and 28S domain 2) were obtained for 27 species, covering all of the recognised species-groups. Estimated times of divergence were based on published mutation rates for COI. The results recovered eight monophyletic lineages, supporting the morphology-based subdivisions of the genus. Flightlessness evolved at least five times within the subgenus. There is no strong support for the re-acquisition of functional wings once they are lost. Diversification, and the present relictual distributions, in African Phoberus can be linked to climatic and geological events associated with the Miocene and Pliocene Climate Optimum in southern Africa. The evolution of flightlessness in Phoberus is consistent with the habitat stability hypothesis. All flightless species occupy refugial areas with relatively long-term environmental stability. Phoberus is a promising model group for studying evolutionary trends relating to flightlessness, speciation and biogeography. Flightlessness is a counterintuitive evolutionary development, given the many advantages of flight. To interpret the diversification in the flightless Phoberus capensis Scholtz, the phylogenetic relationships among several populations of P. capensis are investigated. Phylogenetic relationships among populations were inferred using molecular sequence data that suggested three distinct evolutionary lineages, which was also supported by morphological characters. Divergence time estimates suggest a Pliocene-Pleistocene diversification. Based on these results, it is suggested that P. capensis experienced climatically-driven allopatric speciation with sheltered Afrotemperate forests and high mountain peaks serving as important refugia in response to climatic exacerbations. The P. capensis complex thus represents a speciation process in which flight-restricted populations evolved in close allopatry, possibly as recently as the Pleistocene. Two of the three divergent and geographically distinct lineages are described as novel species. This study represents the most recent comprehensive work on the Trogidae. On the basis of this study, it is proposed that taxonomic changes to the generic classification of the family be made. Trogidae are formally divided into two subfamilies, Omorginae and Troginae. The subgenus Phoberus is restored to genus rank to include all the Afrotropical species, and Afromorgus is confirmed at subgeneric rank. The genus Madagatrox is synonymised with Phoberus

Biodiversity: Its Measurement and Metaphysics

Biodiversity is a concept that plays a key role in both scientific theories such as the species-area law and conservation politics. Currently, however, little agreement exists on how biodiversity should be defined, let alone measured. This has led to suggestions that biodiversity is not a metaphysically robust concept, with major implications for its usefulness in formulating scientific theories and making conservation decisions. A general discussion of biodiversity is presented, highlighting its application both in scientific and conservation contexts, its relationship with environmental ethics, and existing approaches to its measurement. To overcome the limitations of existing biodiversity concepts, a new concept of biocomplexity is proposed. This concept equates the biodiversity of any biological system with its effective complexity. Biocomplexity is shown to be the only feasible measure of biodiversity that captures the essential features desired of a general biodiversity concept. In particular, it is a well-defined, measurable and strongly intrinsic property of any biological system. Finally, the practical application of biocomplexity is discussed

Phylogenetic and phylogeographic relationships of Pediobius furvus (Hymenoptera:Eulophideae) populations in West Africa

In spite of introduction of new improved and disease resistant cultivars of maize to Africa by the International Institute for Tropical Agriculture (IITA) high quality maize production remains hindered by insect pests, notably lepidopterous stem borers. Field trials using classical biological control methods are currently under way. These pests may be naturally kept in balance by cryptic parasitoid wasps, one of which is the topic of this thesis. Pediobius furvus Gahan (Hymenoptera: Eulophidae) is a gregarious pupal parasitoid of Sesamia calamistis, Chilo partellus and Busseola fusca. The targeted application of this parasitoid is a potentially important element of an integrated pest management strategy for African maize stem-borer control, yet we know very little about its biology, especially its population structure and diversity with respect to geography and host-relationship. Six populations were sampled across Africa. Experiments were carried out to examine morphological differentiation among the populations, to ask whether geographic variation supports their biological identity, and to investigate genetic variation and phylogenetic structure within and among populations. Thirteen morphological characters were examined on 120 females. Morphological characters measurements were used as descriptive data and were analysed using morphometric techniques. Results obtained based on differences among populations due to differences between individuals within populations placed populations in three groups and recognised one of the groups as separate. Mate recognition experiments were carried out with three UK species of Pediobius eubius complex {Pediobius deschampsiae Dawah, P. phalaridis Dawah and P. calamagrostis Dawah, and their Tetramesa hosts (Hymenoptera: Eurytomidae) as a model for test of different species compatibility. No female offspring was recovered from 2-species mating in all tests, whereas females were recovered from single-species mating. Field and laboratory tests results showed that the three species were reproductively incompatible in spite of living in sympatry. Behavioural isolation was due to courtship failure between male and female of different species. Molecular data were analysed from the same six African populations of P. furvus. Phylogenetic relationships among populations were explored using DNA sequence data from the nuclear large ribosomal subunit (28S) and the mitochondrial cytochrome b genes. Phylogenetic analyses at, above and beneath the putative species levels were carried out using minimum evolution model for both 28S rDNA and cytochrome b. An absence of large scale, but trend towards smaller-scale geographic structure was found using analysis of molecular variance of putative cytochrome 6 sequences. However, the sequences were found to be homologous

Abstracts of Papers Presented at the Seventy-Eight Annual Meeting, Virginia Academy of Science, May 23-26, 2000, Radford University, Radford, VA

This document is a list of the abstracts of papers presented at the seventy-eighth meeting of the Virginia Academy of Science that took place at Radford University on May 23 through the 26th, 2000