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Digital heritage portal interfaces are generally similar to digital library and search engine interfaces in displaying search results as a list of brief metadata records. The knowledge organization and search result display of these systems are item-centric, with little support for identifying relationships between items. This paper proposes a knowledge graph system and visualization interface as a promising solution for digital heritage systems to support users in browsing related items, understanding the relationships between items, and synthesizing a narrative on an issue. The paper discusses design issues for the knowledge graph, graph database, and graph visualization, and offers recommendations based on the authors' experience in developing three knowledge graph systems for archive and digital humanities resources: the Zubir Said personal archive collection at the Nanyang Academy of Fine Arts, Singapore; Singapore Pioneers social network; and Polyglot Medicine knowledge graph of Asian traditional and herbal medicine. Lessons learned from a small user study are incorporated in the discussion., INTRODUCTION Digital heritage portal interfaces are generally similar to digital library, bibliographic retrieval system and search engine interfaces in displaying search results as a list of brief metadata items, with [...]

When writing a research paper, the author has to select information to include in the paper to support various arguments. The information has to be organized and synthesized into a coherent whole through relationships and information structures. There is hardly any research on the information structure of research papers, and how information structure supports rhetorical and argument structures. Thus, this study is focused on information organization in the Abstract and Introduction sections of sociology research papers, analyzing the information structure of research objective, question, hypothesis, and result statements. The study is limited to research papers reporting research that investigated cause–effect relations between two concepts. Two semantic frames were developed to specify the types of information associated with cause–effect and comparison relations, and used as coding schemes to annotate the text for different information types. Six link patterns between the two frames were identified—showing how comparisons are used to support the claim that the cause‐effect relation is valid. This study demonstrated how semantic frames can be incorporated in discourse analysis to identify deep structures underlying the argument structure. The results carry implications for the knowledge representation of academic research in knowledge graphs, for semantic relation extraction, and teaching of academic writing. [ABSTRACT FROM AUTHOR]

When writing a research paper, the author has to select information to include in the paper to support various arguments. The information has to be organized and synthesized into a coherent whole through relationships and information structures. There is hardly any research on the information structure of research papers, and how information structure supports rhetorical and argument structures. Thus, this study is focused on information organization in the Abstract and Introduction sections of sociology research papers, analyzing the information structure of research objective, question, hypothesis, and result statements. The study is limited to research papers reporting research that investigated cause–effect relations between two concepts. Two semantic frames were developed to specify the types of information associated with cause–effect and comparison relations, and used as coding schemes to annotate the text for different information types. Six link patterns between the two frames were identified—showing how comparisons are used to support the claim that the cause‐effect relation is valid. This study demonstrated how semantic frames can be incorporated in discourse analysis to identify deep structures underlying the argument structure. The results carry implications for the knowledge representation of academic research in knowledge graphs, for semantic relation extraction, and teaching of academic writing. [ABSTRACT FROM AUTHOR]

Sitodiplosis mosellana, a periodic but devastating wheat pest, relies on wheat spike volatiles as a cue in selecting hosts for oviposition. Insect odorant‐binding proteins (OBPs) are thought to play essential roles in filtering, binding and transporting hydrophobic odorant molecules to specific receptors. To date, the molecular mechanisms underlying S. mosellana olfaction are poorly understood. Here, three S. mosellana antenna‐specific OBP genes, SmosOBP11, 16 and 21, were cloned and bacterially expressed. Binding properties of the recombinant proteins to 28 volatiles emitted from wheat spikes were investigated using fluorescence competitive binding assays. Sequence analysis suggested that these SmosOBPs belong to the Classic OBP subfamily. Ligand‐binding analysis showed that all three SmosOBPs preferentially bound alcohol, ester and ketone compounds, and SmosOBP11 and 16 also selectively bound terpenoid compounds. In particular, the three SmosOBPs had high binding affinities (Ki < 20 μmol/L) to 3‐hexanol and cis‐3‐hexenylacetate that elicited strong electroantennogram (EAG) response from female antennae. In addition, SmosOBP11 displayed significantly higher binding (Ki < 8 μmol/L) than SmosOBP16 and 21 to 1‐octen‐3‐ol, D‐panthenol, α‐pinene and heptyl acetate which elicited significant EAG response, suggesting that SmosOBP11 plays a major role in recognition and transportation of these volatiles. These findings have provided important insight into the molecular mechanism by which S. mosellana specifically recognizes plant volatiles for host selection, and have facilitated identification of effective volatile attractants that are potentially useful for pest monitoring and trapping. [ABSTRACT FROM AUTHOR]

Juvenile hormone (JH), a growth regulator, inhibits ecdysteroid‐induced metamorphosis and controls insect development and diapause. Methoprene‐tolerant (Met) and Krüppel homolog 1 (Kr‐h1) are two proteins involved in JH action. To gain some insight into their function in development of Sitodiplosis mosellana, an insect pest undergoing obligatory larval diapause at the mature 3rd instar stage, we cloned full‐length complementary DNAs of Met and Kr‐h1 from this species. SmMet encoded a putative protein, which contained three domains typical of the bHLH‐PAS family and eight conserved amino acid residues important for JH binding. SmKr‐h1 encoded a protein showing high sequence homology to its counterparts in other species, and contained all eight highly conserved Zn‐finger motifs for DNA‐binding. Expression patterns of SmMet and SmKr‐h1 were developmentally regulated and JH III responsive as well. Their mRNA abundance increased as larvae entered early 3rd instar, pre‐diapause and maintenance stages, and peaked during post‐diapause quiescence, a pattern correlated with JH titers in this species. Different from reduced expression of SmMet, SmKr‐h1 mRNA increased at mid‐to‐late period of post‐diapause development. Topical application of JH III on diapausing larvae also induced the two genes in a dose‐dependent manner. Expression of SmMet and SmKr‐h1 clearly declined in the pre‐pupal phase, and was significantly higher in female adults than male adults. These results suggest that JH‐responsive SmMet and SmKr‐h1 might play key roles in diapause induction and maintenance as well as in post‐diapause quiescence and adult reproduction, whereas metamorphosis from larvae to pupae might be correlated with their reduced expression. [ABSTRACT FROM AUTHOR]

To better understand the olfactory receptive mechanisms involved in host selection and courtship behavior of Sitodiplosis mosellana (Diptera: Cecidomyiidae), one of the most important pests of wheat, scanning and transmission electron microscopy were used to examine the external morphology and ultrastructure of the antennal sensilla. The moniliform antennae exhibit obvious sexual dimorphism: antennae of the males are markedly longer than those of the females. Furthermore, each male flagellomere consists of two globular nodes, whereas each female flagellomere is cylindrical. Seven types of sensilla were identified in both sexes. Two types of s. chaetica have a lumen without dendrites and thick walls, suggesting that they are mechanoreceptors. S. trichodea and s. circumfila are typical chemoreceptors, possessing thin multiporous walls encircling a lumen with multiple dendrites. There are significantly more s. trichodea in female than in male, which may be related to host plant localization. In contrast, male s. circumfila are highly elongated compared to those of females, perhaps for pheromone detection. Peg-shaped s. coeloconica are innervated with unbranched dendrites extending from the base to the distal tip. Type 1 s. coeloconica, which have deep longitudinal grooves and finger-like projections on the surface, may serve as olfactory or humidity receptors, whereas type 2 s. coeloconica, smooth with a terminal pore, may be contact chemoreceptors. Also, this is the first report of Böhm' bristles at proximal scape on antennae of Cecidomyiid species potentially functioning as mechanoreceptors., (© The Author 2016. Published by Oxford University Press on behalf of the Entomological Society of America.)

The activities of protective enzymes peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT) in pre-diapause, diapause, and post-diapause larvae of Sitodiplosis mosellana Gehin were determined by using protective enzyme testing kits. The results indicated that the activities of the three protective enzymes showed a decreasing trend from pre-diapause to early diapause larvae. In one-year cycle, the SOD and CAT activities of diapause larvae had the same responses to environmental temperature, i.e., increased at lower temperature but decreased at higher temperature, while POD activity was related to both environmental temperature and the development situation of the larvae. A similar seasonal variation trend was observed in the three protective enzymes of both no-cocooned and cocooned larvae in one-year cycle. The three protective enzyme activities of no-cocooned larvae were higher than those of cocooned larvae at the same diapause stage. No significant difference of the three protective enzyme activities was found between 1st and 2nd year diapause larvae. The activities of the three protective enzymes increased gradually with the development of post-diapause larvae.