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Multi-radio fast routing recovery protocol based on spectrum situation awareness
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作者 Chuanxin ZHOU Chao DONG +3 位作者 Xiaojun ZHU Fuhui ZHOU Qihui WU Zhengrui QIN 《Chinese Journal of Aeronautics》 2025年第3期435-446,共12页
UAV networks often encounter jamming attacks, under which multi-radio protocols have to switch radios to accelerate communication recovery. However, the existing protocols rely on exchange of hello messages to detect ... UAV networks often encounter jamming attacks, under which multi-radio protocols have to switch radios to accelerate communication recovery. However, the existing protocols rely on exchange of hello messages to detect jamming, leading to long sensing time and thus slow routing recovery. To address the issues raised by jamming attacks, we propose a new routing protocol, Electromagnetic Spectrum situation awareness Optimized Link State Routing (ESOLSR) protocol, to improve the existing OLSRv2 protocol. ESOLSR utilizes the spectrum situation awareness capability from the physical layer, and adopts joint-updating of link status, updating of interface functions, and adaptive adjustment of parameters. Our simulation results show that the improved protocol, ESOLSR, can recover routing and resume normal communication 26.6% faster compared to the existing protocols. 展开更多
关键词 UAV ad hoc network OLSR protocol Routing recovery Electromagnetic spectrum situation awareness MULTI-RADIO
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England, Holland, and the Fishing Wars 被引量:1
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作者 Joel D. Benson 《Journal of Philosophy Study》 2015年第9期447-452,共6页
The Dutch herring trade contributed greatly to Dutch commercial prosperity. The most profitable Dutch fishing grounds, however, were off the coasts of England and Scotland. For centuries, the English allowed the Dutch... The Dutch herring trade contributed greatly to Dutch commercial prosperity. The most profitable Dutch fishing grounds, however, were off the coasts of England and Scotland. For centuries, the English allowed the Dutch to fish these waters. During the reign of James I, however, the changing English perspective of the Dutch led the English Crown to question the right of the Dutch to fish in English waters. In the fishing trade, centuries of cooperation gave way to an emerging commercial rivalry. 展开更多
关键词 FISHING HERRING James I Mare Liberum Proclamation of 1609 Estates General
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Anglo-Dutch Relations and the Amboyna Massacre
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作者 Joel D. Benson 《History Research》 2012年第3期173-177,共5页
The economic relationship between the Dutch and the English was long established by the beginning of the Stuart era. With the accession of James I this situation began to change. The Treaty of London ended almost two ... The economic relationship between the Dutch and the English was long established by the beginning of the Stuart era. With the accession of James I this situation began to change. The Treaty of London ended almost two decades of English military cooperation with the Dutch, and English and Dutch factors in the East Indies began competing not only with the Iberians but with each other. In 1619, representatives of both countries reached an agreement in London for joint access to the spice markets of the East Indies. Despite these efforts of business and government leaders, the Amboyna massacre marked the end of any real chance of Anglo-Dutch cooperation in the East Indies. 展开更多
关键词 Anglo-Dutch relationship the Amboyna massacre East Indies spice trade
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Allelopathic potential of <i>Artemisia biennis</i>(biennial wormwood)
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作者 George O. Kegode Mark G. Ciernia David B. Vlieger 《Agricultural Sciences》 2012年第4期582-587,共6页
In this study, Artemisia biennis was seeded in a greenhouse and raised to an average plant height of 100 cm. Aboveground plant portions were harvested and partitioned into leaves and stems, and dried;while roots were ... In this study, Artemisia biennis was seeded in a greenhouse and raised to an average plant height of 100 cm. Aboveground plant portions were harvested and partitioned into leaves and stems, and dried;while roots were either removed from some soil (soil – roots) or left in soil (soil + roots). Greenhouse studies were conducted to evaluate the allelopathic potential of A. biennis leaves, roots, and stems;and soil – roots, and soil + roots on Solanum melanocerasum plant height and fresh weight plant–1. When 5 g of root and stem biomass were added to soil, S. melanocerasum plant height and fresh weight plant–1 was reduced by 75 and 88%, respectively. In contrast, 5 g of leaf biomass caused an increase in S. melanocerasum plant height and fresh weight plant–1 by 35% and 43%, respectively;whereas, 20 g of leaf biomass depressed both variables by 50% and 65%, also respectively. Plant height was more suppressed when S. melanocerasum grew in soil – roots as opposed to soil + roots, whereas fresh weight plant–1 was similar between soil treatments. S. melanocerasum plant height was reduced by 70 and 55% when grown in soil – roots and soil + roots, respectively. In contrast, S. melanocerasum fresh weight plant–1 was reduced by 76% in both soil treatments. The reduction in S. melanocerasum plant attributes in this study is indicative of the allelopathic potential of A. biennis. Furthermore, A. biennis allelopathy is differenttially expressed among plant parts, primarily in roots. This may explain how A. biennis is capable of dominating a habitat once it becomes established. The presence of extractable compounds with herbicidal activity could increase the potential usefulness of A. biennis. 展开更多
关键词 Allelopathic POTENTIAL ARTEMISIA Biennis Biennial Wormwood GARDEN Huckleberry SOLANUM Melanocerasum
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Assessment of an Outdoor Large Sports Event
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作者 Tyler Tapps Timothy Baghurst Jennifer Volberding 《Journal of Sports Science》 2014年第1期27-31,共5页
The purpose of this manuscript was to discuss the findings and results of a large scale assessment of an outdoor sports event. An additional purpose was to develop a step-by-step methodology for instructor on how to i... The purpose of this manuscript was to discuss the findings and results of a large scale assessment of an outdoor sports event. An additional purpose was to develop a step-by-step methodology for instructor on how to implement an evaluation of a large recreation event in order to assist other organizations wishing to host or improve upon their own large-scale events. Large scale events have the potential to attract a large audience which can lead to many benefits for the instructors or organizers. The example used in this study was a large-scale event called the Oklahoma Wildlife Expo, which is the largest annual event hosted by the ODWC (Oklahoma Department of Wildlife and Conservation). Its purpose is to emphasize the importance of wildlife conservation and provide an opportunity for the public to experience various outdoor recreation activities such as fishing, shooting, archery, and canoeing. Since visitors' assessment of the event is essential for future improvement, The Oklahoma Department of Wildlife Conservation has collaborated with academic institutions in order to conduct impartial research on visitors' perceptions regarding their experience at the event. The sample for this study suggested that all of the participants were highly satisfied with their overall experience. Findings are discussed and best-practices are suggested in order to assist other evaluators in their large-scale events in improving their data collection methodology as well as their event in general. 展开更多
关键词 Outdoor sports ASSESSMENT event planning.
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Severe <i>Citrus tristeza virus</i>Isolates from Eastern Mexico Are Related to the T36 Genotype Group
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作者 Patricia Rivas-Valencia Santiago Domínguez-Monge +4 位作者 Ricardo Santillán-Mendoza Emiliano Loeza-Kuk Oscar Pérez-Hernández Cynthia G. Rodríguez-Quibrera Claudia Lomas-Barrié 《American Journal of Plant Sciences》 2020年第10期1521-1532,共12页
<p style="text-align:justify;"> <span><i><span style="font-family:""><span style="font-family:Verdana;">Citrus </span><span style="font-fa... <p style="text-align:justify;"> <span><i><span style="font-family:""><span style="font-family:Verdana;">Citrus </span><span style="font-family:Verdana;">tristeza</span><span style="font-family:Verdana;"> virus</span></span></i></span><span><span><span style="font-family:""><span style="font-family:Verdana;"> (CTV) outbreaks have been reported in the main citrus growing region of Mexico in the past four years. Recently, in eastern Mexico (the major citrus-growing region in the country), severe CTV isolates have been detected. However, the molecular identity of </span><span style="font-family:Verdana;">observed</span><span style="font-family:Verdana;"> isolates remains unestablished. This research was undertaken to elucidate the molecular characterization of CTV populations spreading in this region and to compare it with </span><span style="font-family:Verdana;">phylogeny</span><span style="font-family:Verdana;"> of existing isolates. Genotyping of 32 collected isolates was performed using reverse-transcription polymerase chain reaction (RT-PCR) with sequence analysis of the coat protein (CP) gene, putatively associated with pathogenicity. This protein is a 25 kDa major capsid protein, which forms a long virion body coating 95% of the particle length. </span><span style="font-family:Verdana;">A comparative</span><span style="font-family:Verdana;"> sequence </span><span style="font-family:Verdana;">analys</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">is</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> was performed using CTV sequences from different geographical origins already published and deposited in the GenBank databases. Phylogenetic analysis showed that the degree of sequence divergence among isolates correlated with their pathogenicity. Based on the sequencing results, the collected isolates were categorizedn as mild or severe phylogenetic clusters, each being genetically distinct. The severe group was associated </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">with</span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;"> either </span><span style="font-family:Verdana;">a</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">like</span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;"> or with a T36-like genotype. The latter group matched with the quick decline and stem pitting drastic symptoms observed in the field. This study identified the presence of severe CTV isolates related to the T36-like genotype and to the cause of quick decline and stem pitting in sweet orange propagated on sour orange rootstock. Knowledge derived from these analyses could serve to design management strategies for this disease and to understand the cur</span><span style="font-family:Verdana;">rent epidemic outbreak in scenarios where the most efficient vector is present.</span></span></span></span><span></span><span style="font-family:""></span> </p> 展开更多
关键词 CTV Epidemiology Severe Isolates Stem Pitting Quick Decline Coat Protein Gene
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Short-term impacts of biochar and manure application on soil labile carbon fractions,enzyme activity,and microbial community structure 被引量:3
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作者 Saroop Sandhu Udayakumar Sekaran +2 位作者 Ekrem Ozlu Nigel O.Hoilett Sandeep Kumar 《Biochar》 2019年第3期271-282,共12页
Biochar is known to ameliorate soil fertility and increase crop yield;however,information regarding its effects on soil chemical and biological properties remains limited.The experiment was conducted to study the shor... Biochar is known to ameliorate soil fertility and increase crop yield;however,information regarding its effects on soil chemical and biological properties remains limited.The experiment was conducted to study the short-term impacts of dif-ferent types of biochar on soil C fractions,enzyme activities,and microbial community structure at depositional and eroded landscape positions at different sampling times[before planting,after planting,and after harvesting of soybean(Glycine max L.)].Three biochar materials,produced from C-optimized gasification of corn(maize,Zea mays L.)stover(CS),pon-derosa pine(Pinus ponderosa Lawson and C.Lawson)wood residue(PW),and switchgrass(Panicum virgatum L.)(SG),and dairy manure(DM)and mixture of dairy manure and pinewood biochar(DMP),were applied at a rate of 10 Mg ha^(−1) to depositional and eroded landscape positions.Data showed that the application of DMP and sole application of DM treat-ments significantly increased the labile C fractions at the depositional and eroded landscapes.The addition of DM and DMP increased the activities ofβ-glucosidase and urease enzymes,and those are involved in C and nitrogen cycling at depositional and eroded landscape positions.There were no significant differences between different biochar materials.However,there was an increase in soil microbial community structure in the DM and DMP treatments at both the landscape positions.In conclusion,our study revealed that DMP and sole application of DM influenced the soil labile C pool,enzyme activities,and microbial community structure at both the landscape positions for different sampling times. 展开更多
关键词 BIOCHAR MANURE PLFA Labile C UREASE Β-GLUCOSIDASE
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Hans-Georg Gadamer on Praxis and Hermeneutical Understanding
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作者 Roy Abhik Bayo Oludaja 《Comparative Literature:East & West》 2011年第1期27-42,共16页
Hans-Georg Gadamer,who passed away at the age of 102 on March 13,2002,devoted a scholarly lifetime to the exploration of human understanding and interpretation.Gadamer is best known for his work on philosophical herme... Hans-Georg Gadamer,who passed away at the age of 102 on March 13,2002,devoted a scholarly lifetime to the exploration of human understanding and interpretation.Gadamer is best known for his work on philosophical hermeneutics,or the philosophy of understanding.Since the publication of Wahrheit und Methode(Truth and Method)in 1960 Gadamer's ideas a bout hermeneutics have had a profound influence on scholars of all stripes.According to Alasdair MacIntyre(2002),Gadamer's magnum opus,Truth and Method,has attained the status of one of the great philosophical works of the last century.Jeff Malpas,Ulrich Arnswald,and Jens Kertscher(2002)remind us. 展开更多
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Perspectives on Authentic Dialogue as a Viable Pathway to Global Citizenship
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作者 Abhik ROY Bayo OLUDAJA 《Comparative Literature:East & West》 2013年第1期18-31,共14页
We live in a world where we frequently encounter others from different cultures.Our contemporary global community is one of interdependence.Today’s problems in the areas of economy,environment,religion,or politics ar... We live in a world where we frequently encounter others from different cultures.Our contemporary global community is one of interdependence.Today’s problems in the areas of economy,environment,religion,or politics are not local;they are global in their scope.To solve these complex problems that we face we need to overcome our cultural differences in order to cooperate and collaborate in ways that we have not done previously with people who are culturally alien to us.In order to address these kinds of complex global issues,we need a multicultural and global perspective that,in turn,will help bring fresh,innovative solutions to the problems. 展开更多
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Appreciating African American Rhetoric Through the Lens of Afrocentricity
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作者 Abhik ROY Bayo OLUDAJA 《Comparative Literature:East & West》 2012年第2期1-19,共19页
I.Author's Brief CVThere is a growing interest in African American rhetoric in the field ofcommunications in the United States today.It has taken almost three decades formainstream scholars in the United States to... I.Author's Brief CVThere is a growing interest in African American rhetoric in the field ofcommunications in the United States today.It has taken almost three decades formainstream scholars in the United States to accept African American rhetoric as alegitimate field of study as traditional Western rhetoric has enjoyed for timeimmemorial(Cummings&Roy,2002). 展开更多
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Fungal diversity notes 1611-1716:taxonomic and phylogenetic contributions on fungal genera and species emphasis in south China 被引量:2
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作者 Indunil C.Senanayake Walter Rossi +104 位作者 Marco Leonardi Alex Weir Mark McHugh Kunhiraman C.Rajeshkumar Rajnish K.Verma Samantha C.Karunarathna Saowaluck Tibpromma Nikhil Ashtekar Sreejith K.Ashtamoorthy Sanjay Raveendran Gurmeet Kour Aishwarya Singh Saúl De la Peña-Lastra Antonio Mateos Miroslav Kolařík Vladimír Antonín HanaŠevčíková Fernando Esteve-Raventós Ellen Larsson Fermín Pancorbo Gabriel Moreno Alberto Altés Yolanda Turégano Tian-Ye Du Li Lu Qi-Rui Li Ji-Chuan Kang Sugantha Gunaseelan Kezhocuyi Kezo Malarvizhi Kaliyaperumal Jizhen Fu Milan C.Samarakoon Yusufjon Gafforov Shakhnoza Teshaboeva Pradeep C.Kunjan Arya Chamaparambath Adam Flakus Javier Etayo Pamela Rodriguez-Flakus Mikhail P.Zhurbenko Nimali Ide Silva Danushka S.Tennakoon KPDeepna Latha Patinjareveettil Manimohan KNAnil Raj Mark S.Calabon Abdollah Ahmadpour Zeinab Heidarian Zahra Alavi Fatemeh Alavi Youbert Ghosta Razmig Azizi Mei Luo Min-Ping Zhao Nuwan D.Kularathnage Li Hua Yun-Hui Yang Chun-Fang Liao Hai-Jun Zhao Anis S.Lestari Subashini C.Jayasiri Feng-Ming Yu Lei Lei Jian-Wei Liu Omid Karimi Song-Ming Tang Ya-Ru Sun Yong Wang Ming Zeng Zin H.Htet Benedetto T.Linaldeddu Artur Alves Alan J.L.Phillips Carlo Bregant Lucio Montecchio AndréDe Kesel Vincent P.Hustad Andrew N.Miller Anna G.Fedosova Viktor Kučera Mubashar Raza Muzammil Hussain Yan-Peng Chen Vinodhini Thiyagaraja Deecksha Gomdola Achala R.Rathnayaka Asha J.Dissanayake Nakarin Suwannarach Sinang Hongsanan Sajeewa S.N.Maharachchikumbura Lakmali S.Dissanayake Nalin N.Wijayawardene Rungtiwa Phookamsak Saisamorn Lumyong E.B.Gareth Jones Neelamanie Yapa Dhanushka N.Wanasinghe Ning Xie Mingkwan Doilom Ishara S.Manawasinghe Jian-Kui(Jack)Liu Qi Zhao Biao Xu Kevin D.Hyde Jiage Song 《Fungal Diversity》 SCIE 2023年第5期161-403,共243页
This article is the 15th contribution in the Fungal Diversity Notes series,wherein 115 taxa from three phyla,nine classes,28 orders,48 families,and 64 genera are treated.Fungal taxa described and illustrated in the pr... This article is the 15th contribution in the Fungal Diversity Notes series,wherein 115 taxa from three phyla,nine classes,28 orders,48 families,and 64 genera are treated.Fungal taxa described and illustrated in the present study include a new family,five new genera,61 new species,five new combinations,one synonym,one new variety and 31 records on new hosts or new geographical distributions.Ageratinicolaceae fam.nov.is introduced and accommodated in Pleosporales.The new genera introduced in this study are Ageratinicola,Kevinia,Pseudomultiseptospora(Parabambusicolaceae),Marasmiellomycena,and Vizzinia(Porotheleaceae).Newly described species are Abrothallus altoandinus,Ageratinicola kunmingensis,Allocryptovalsa aceris,Allophoma yuccae,Apiospora cannae,A.elliptica,A.pallidesporae,Boeremia wisteriae,Calycina papaeana,Clypeo-coccum lichenostigmoides,Coniochaeta riskali-shoyakubovii,Cryphonectria kunmingensis,Diaporthe angustiapiculata,D.campylandrae,D.longipapillata,Diatrypella guangdongense,Dothiorella franceschinii,Endocalyx phoenicis,Epicoc-cum terminosporum,Fulvifomes karaiensis,F.pannaensis,Ganoderma ghatensis,Hysterobrevium baoshanense,Inocybe avellaneorosea,I.lucida,Jahnula oblonga,Kevinia lignicola,Kirschsteiniothelia guangdongensis,Laboulbenia caprina,L.clavulata,L.cobiae,L.cosmodisci,L.nilotica,L.omalii,L.robusta,L.similis,L.stigmatophora,Laccaria rubriporus,Lasiodiplodia morindae,Lyophyllum agnijum,Marasmiellomycena pseudoomphaliiformis,Melomastia beihaiensis,Nemania guangdongensis,Nigrograna thailandica,Nigrospora ficuum,Oxydothis chinensis,O.yunnanensis,Petriella thailandica,Phaeoacremonium chinensis,Phialocephala chinensis,Phytophthora debattistii,Polyplosphaeria nigrospora,Pronectria loweniae,Seriascoma acutispora,Setoseptoria bambusae,Stictis anomianthi,Tarzetta tibetensis,Tarzetta urceolata,Tetraploa obpyriformis,Trichoglossum beninense,and Tricoderma pyrrosiae.We provide an emendation for Urnula ailaoshanensis Agaricus duplocingulatoides var.brevisporus introduced as a new variety based on morphology and phylogeny. 展开更多
关键词 AGARICOMYCETES ASCOMYCOTA Basidiomycota DOTHIDEOMYCETES Eurotiomycetes Fungal diversity Geoglossomycetes Geographical distribution Host records Incertae sedis Laboulbeniomycetes LECANOROMYCETES Leotiomycetes Novel taxa New combination OOMYCOTA Peronosporea Pezizomycetes Phylogeny SORDARIOMYCETES South Chinese fungi Taxonomy
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