Zeitschriftenartikel zum Thema „Crypto Wallet“

With the proliferation of blockchain projects and applications, cryptocurrency exchanges, which provides exchange services among different types of cryptocurrencies, become pivotal platforms that allow customers to trade digital assets on different blockchains. Because of the anonymity and trustlessness nature of cryptocurrency, one major challenge of crypto-exchanges is asset safety, and all-time amount hacked from crypto-exchanges until 2018 is over $1.5 billion even with carefully maintained secure trading systems. The most critical vulnerability of crypto-exchanges is from the so-called hot wallet, which is used to store a certain portion of the total asset online of an exchange and programmatically sign transactions when a withdraw happens. It is important to develop network security mechanisms. However, the fact is that there is no guarantee that the system can defend all attacks. Thus, accurately controlling the available assets in the hot wallets becomes the key to minimize the risk of running an exchange. In this paper, we propose Shoreline, a deep learning-based threshold estimation framework that estimates the optimal threshold of hot wallets from historical wallet activities and dynamic trading networks.

With the proliferation of blockchain projects and applications, cryptocurrency exchanges, which provides exchange services among different types of cryptocurrencies, become pivotal platforms that allow customers to trade digital assets on different blockchains. Because of the anonymity and trustlessness nature of cryptocurrency, one major challenge of crypto-exchanges is asset safety, and all-time amount hacked from crypto-exchanges until 2018 is over $1.5 billion even with carefully maintained secure trading systems. The most critical vulnerability of crypto-exchanges is from the so-called hot wallet, which is used to store a certain portion of the total asset of an exchange and programmatically sign transactions when a withdraw happens. Whenever hackers managed to gain control over the computing infrastructure of the exchange, they usually immediately obtain all the assets in the hot wallet. It is important to develop network security mechanisms. However, the fact is that there is no guarantee that the system can defend all attacks. Thus, accurately controlling the available assets in the hot wallets becomes the key to minimize the risk of running an exchange. However, determining such optimal threshold remains a challenging task because of the complicated dynamics inside exchanges. In this paper, we propose Shoreline, a deep learning-based threshold estimation framework that estimates the optimal threshold of hot wallets from historical wallet activities and dynamic trading networks. We conduct extensive empirical studies on the real trading data from a trading platform and demonstrate the effectiveness of the proposed approach.

Introduction. The rapid rise and volatility of cryptoassets have led to increased global interest by governments, investors, regulators. In 2020, the market capitalization of cryptocurrencies increased to USD 758.06 billion by expert estimations. Each of the cryptoassets has its own unique features and characteristics which makes their accounting and auditing challenging. The lack of official accounting and auditing guidance for cryptoassets and related transactions impose additional audit risks that should be measured properly before the client-acceptance stage and planning audit procedures. We developed a model which links financial statement assertions, identified cryptoassets’ risks that should be considered during the audit, and related controls in response to such risks. The purpose of this paper is to identify cryptoassets framework for audit planning and gathering audit evidence to support management assertions regarding their financial statements. Methods. This paper adopts an empirical research approach with application of auditing and analytical procedures. In a comprehensive analytical overview of trends in cryptoassets market capitalization, the authors have used statistical methods and structural analysis, the selected sample includes daily data of cryptoassets market capitalization during January 2016 - February 2020. Results. According to the conducted research, the auditors have to consider whether to accept or continue an audit engagement when an entity has engaged in material cryptocurrency transactions; the auditors have to identify and assess risks of material misstatement in financial statements related to cryptoassets transactions and balances. We suggested a possible substantive audit procedures for cryptoassets and related transactions, such as: inspection of the wallets and verification the balances on them; confirmation by a third party (traders); inspection of documents supporting ownership of the asset (white papers, agreements with crypto-traders); testing client internal controls system and controls that are implemented to ensure the security of the private key of crypto-wallet. Conclusions. It is becoming common for financial statements to show cryptoassets balances and reflect the results of cryptoassets transactions, however, many auditors may have little or no experience with cryptoassets and therefore may not fully appreciate the challenges that auditing these items may present. The auditors need to identify and assess risks of material misstatement throughout the process of obtaining an understanding of the entity and its control environment, and evaluate the potential effect of that risks on financial statements.

The article analyses the development of international agreements on the means of controlling financial activities, concluded to counteract the laundering of proceeds from crime and the financing of terrorism. The study was carried out by analytical methods based on domestic legislation, international agreements and regulations. As a result of thirty years of work on organizing interaction in the developing three-level financial monitoring system, a whole set of measures has developed, the main development trend of which is to reduce information uncertainty. In this regard, the fifth generation of agreements on the limitation of potentially illegal activities in the financial sector, introduced in 2020, is acquiring special importance. The legal entities covered by the restrictive and control measures now include crypto exchange platforms, virtual wallet providers, as well as firms that provide currency exchange services. In a number of areas, information is automatically exchanged about ongoing transactions, as well as about their participants – clients of banks, insurance and brokerage companies, investment funds, in order to prevent aggressive tax planning and make it difficult to access unjustified tax breaks. The paper presents the economic and organizational results of the introduced legal measures.

Soil is one of the main reservoirs of fungi. The aim of this study was to study the richness of ascomycetes in a set of soil samples from Mexico and Spain. Fungi were isolated after 2% w/v phenol treatment of samples. In that way, several strains of the genus Penicillium were recovered. A phylogenetic analysis based on internal transcribed spacer (ITS), beta-tubulin (BenA), calmodulin (CaM), and RNA polymerase II subunit 2 gene (rpb2) sequences showed that four of these strains had not been described before. Penicillium melanosporum produces monoverticillate conidiophores and brownish conidia covered by an ornate brown sheath. Penicillium michoacanense and Penicillium siccitolerans produce sclerotia, and their asexual morph is similar to species in the section Aspergilloides (despite all of them pertaining to section Lanata-Divaricata). P. michoacanense differs from P. siccitolerans in having thick-walled peridial cells (thin-walled in P. siccitolerans). Penicillium sexuale differs from Penicillium cryptum in the section Crypta because it does not produce an asexual morph. Its ascostromata have a peridium composed of thick-walled polygonal cells, and its ascospores are broadly lenticular with two equatorial ridges widely separated by a furrow. All four new species are xerophilic. Despite the genus Penicillium containing more than 480 known species, they are rarely reported as xerophilic.

In only one decade, cryptocurrencies have witnessed significant growth, with Bitcoin being the most dominant one. They are not efficient payment methods, although they bring some benefits linked to the underlying technology they use (Blockchain). In reality, they function more as investment assets than as payment instruments and pose various risks, which are very similar to those encountered on capital markets (price volatility, fraud, market manipulation). In order to deal with these risks, regulation should apply to intermediaries who provide services in relation to cryptocurrencies, such as crypto wallets, operation of crypto exchanges and brokerage. To this end, the European legislator should consider two options. It could, on the one hand, bring cryptocurrency service providers within the scope of the existing financial services regime and thus modify MIFID II in order to include cryptocurrencies in the list of financial instruments. The European legislator could also, on the other hand, aim at creating a new appropriate and proportionate regime that draws on the existing one. Insofar as the existing regulatory framework was not designed with cryptocurrencies in mind and as some of the current rules may not be tailored to the specificities of these assets, the second option is preferable.

An enteric syndrome of turkey poults, characterized by enteritis, crop mycosis, intestinal changes (pale, thin-walled ballooning with watery contents), and rickets, occurred during 1988 in 74 turkey flocks from different farms belonging to 9 California turkey growers. The flocks ranged in size from 9,000 to 120,000 birds. Pools of intestine sections from 618 birds, representing 78 field cases, were examined. Histopathological examination of the intestines showed a mild to severe atrophy with a reduced depth of crypts, which was more prominent in the distal part of the small intestine. Viral isolation attempts with primary cell cultures of chicken embryo kidney cells were negative. Examination by electron microscopy of negatively stained intestinal specimens revealed the presence of Reoviridae particles of 58.8 to 80 nm in diameter. Enzyme-linked immunosorbent assay results on the intestinal pools for mammalian and group A avian rotaviruses were negative. A statistically significant relationship was found for the presence of Reoviridae particles in the intestines of 10-21-day-old birds. Of the 7 most common pathological conditions analyzed, 2, rickets and intestinal changes (thin-walled ballooning intestine with watery contents), showed a statistically significant association with the presence of Reoviridae particles.

In order to better understand the phylogenetic relationships among species in the genus Ravinia Robineau-Desvoidy, 1863, we analysed data from two mitochondrial gene fragments: cytochrome oxidase I (COI) and cytochrome oxidase II (COII). We used Bayesian inference and maximum likelihood methods to infer phylogenetic relationships. Our results indicate that the genera Ravinia and Chaetoravinia, previously synonymised into the genus Ravinia (sensu lato) are each likely to be monophyletic (posterior probability 1; bootstrap support 85%). We found highly supported paraphyletic relationships among species of Ravinia, with relatively deep splits in the phylogeny. This conflict between the morphological species definitions and the mtDNA phylogeny could be indicative of the presence of cryptic species in Ravinia anxia (Walker, 1849), Ravinia floridensis (Aldrich, 1916), Ravinia lherminieri (Robineau-Desvoidy, 1830), and Ravinia querula (Walker, 1849).

Octosporaconidiophorais described as a new species, based on collections from South Africa. It is characterised by apothecia with a distinct margin, smooth or finely warted ellipsoid ascospores, stiff, thick-walled hyaline hairs, warted mycelial hyphae and growth on pleurocarpous mossesTrichosteleumperchlorosumandSematophyllumbrachycarpum(Hypnales) on decaying wood in afromontane forests. It is the first species of bryophilous Pezizales in which an anamorph has been observed; it produces long, claviform, curved, hyaline and transversely septate conidia. Three other cryptic species ofOctosporawere detected using three molecular markers (LSU and SSU nrDNA and EF1α), but these could not be distinguished phenotypically. These are not described formally here and an informal species aggregateO.conidiophoraagg. is established for them. The new species and finds ofLamprosporacampylopodisgrowing onCampylopuspyriformisandNeottiellaalbocinctaonAtrichumandrogynumrepresent the first records of bryophilous Pezizales in South Africa.

If you’d walked by Professor Susan Detwiler’s Writing and Critical Inquiry (WCI) classrooms at the University at Albany-SUNY on September 7, you would have seen something rather unusual: two teams of students huddled around tables, preoccupied with locked boxes and an assortment of other materials. Engaged in animated, yet hushed, conversations to keep the other team from overhearing, the students puzzled over cryptic messages and secret codes, hoping to unlock the box and reveal what was inside. Some of the materials on the table provided clues, others turned out to be red herrings.

Insulin-like growth factor I (IGF-I) is an important regulator of fetal growth, and circulating concentrations are reduced in intrauterine growth-restricted (IUGR) fetuses. We investigated whether IGF-I administered into amniotic fluid could ameliorate IUGR in fetal sheep. Fetuses were assigned to control ( n = 9), IUGR+saline ( n = 12), or IUGR+IGF-I groups (daily intra-amniotic IGF-I injections of 20 μg, n = 13). IUGR was induced by placental embolization from 114 to 120 days. Treatment was from 120 to 130 days of gestation. Embolization produced asymmetrically IUGR fetuses with decreased body weight and lighter, thinner-walled guts. Fetal plasma and amniotic IGF-I levels were reduced. During treatment, fetal plasma, but not amniotic, IGF-I levels recovered in the saline group but remained depressed in the IGF-I-treated group. IGF-I treatment restored gut weight and wall thickness to control levels and increased the number of crypt mitoses. Fetal weight was similar to that of controls, but spleen, liver, and thymic weights were reduced by 30–37%, and placentome growth was altered. Amniotic fluid IGF-I supplementation may provide the basis of future therapeutic approaches to IUGR, but the systemic effects require further investigation.

AbstractSurveys were conducted in Ontario and Québec, Canada to determine the parasitoid communities associated with Ceutorhynchus Germar (Coleoptera: Curculionidae) weevil species that are potential nontarget hosts of candidate biological control agents of the cabbage seedpod weevil, Ceutorhynchus obstrictus (Marsham). New host plant associations are documented for Ceutorhynchus americanus Buchanan, Ceutorhynchus neglectus Blatchley, and Ceutorhynchus omissus Fall. More than 18 species of Chalcidoidea (Hymenoptera) were associated with six Ceutorhynchus species reared from siliques and stems of Brassicaceae plants. Silique-feeding Ceutorhynchus species supported a more diverse parasitoid community than stem-feeding or root crown-feeding species. The major components of the parasitoid assemblage of the native C. neglectus included Mesopolobus gemellus Baur and Muller, Mesopolobus moryoides Gibson, Trichomalus lucidus (Walker) (Hymenoptera: Pteromalidae) and a cryptic species complex previously reported as Necremnus tidius (Walker) (Hymenoptera: Eulophidae). These species, plus Trimeromicrus maculatus Gahan (Hymenoptera: Pteromalidae) were the main parasitoids attacking the native C. omissus. The major parasitoids associated with the accidently introduced Ceutorhynchus erysimi (Fabricius) and Ceutorhynchus typhae (Herbst) included T. maculatus, the N. tidius species complex, M. gemellus, and M. moryoides. Trichomalus perfectus (Walker) (Hymenoptera: Pteromalidae), a major parasitoid of C. obstrictus in Europe, is an accidental introduction first reared in Canada from that host in 2009 and first collected from C. omissus in 2011. Mesopolobus gemellus is shown to have a broad host range. These findings highlight the need for a cautious approach before introducing new biological control agents.

The objective of the research was to determine the morphological features of the duodenal wall of animals within 14-56 days of developing streptozotocin-induced diabetes mellitus using light optical microscopy. Materials and Methods. The research was carried out on 40 white nonlinear adult male rats. Diabetes mellitus was simulated by a single intraperitoneal injection of streptozotocin (Sigma, USA) at a dose of 60 mg/kg body weight. The material was taken from the duodenum on the 14th, 28th and the 56th days after the onset of experimental diabetes mellitus. For histological study, the preparations were made using the conventional method, which included the staining of sections with hematoxylin and eosin. Results. Streptozotocin-induced diabetes mellitus was experimentally found to lead to dystrophic changes in the epithelial components of the duodenal mucosa from the 14th day of developing. There were observed a shortening of the villi of the mucous membrane and a lack of distinctness of striated border contours on the apical surface of epitheliocytes. Between the connective-tissue fibers of the lamina propria of the mucosa and thin-walled vessels, the cellular elements, including mainly macrophages, lymphocytes, were found. There was a shortening of the villi, edema and histiolymphocytic infiltration of the villous stroma 28 days after developing experimental diabetes mellitus. The epithelium covering was discontinuous; numerous areas of desquamation were found at the apex of the villi. Fifty-six days after developing experimental diabetes mellitus, the destruction and desquamation of the epithelium of the villi and crypts were observed. The surface of the duodenal mucosa smoothed down due to the shortening and flattening of the villi (indicating their atrophy), while the crypts elongated and their depth increased. Conclusions. Histological study of the duodenal wall of diabetic animals showed pronounced desquamation at the apex of the villi, destructive and dystrophic changes in the surface epithelium, edema and increased cellular infiltration of the lamina propria of the mucosa. Thus, in diabetes mellitus, structural changes in the duodenal wall of rats are characterized by the dystrophic processes, which can be considered as the morphological reflection of enteropathy.

Abstract Reproduction is a key aspect of evolution, but the process is rarely preserved in the fossil record. Organisms fortuitously preserved undergoing reproduction provide an exceptional window illuminating the biology of extinct taxa, especially those with unknown phylogenetic position. Here we report exceptional specimens of chitinozoans (enigmatic Paleozoic organic-walled microfossils) preserved as “test-in-test” morphology, which have previously been interpreted as teratological forms. Application of advanced imaging techniques on newly recovered and reexamined Ordovician materials enabled documentation of critical morphological details of the test’s inner ultrastructure for the first time. The results show that the newly observed spongy material and dendritic structure on or inside the chitinozoan test as well as the test wall itself are all made of clustered rounded spherical particles. Morphological details suggest that those specimens represent key stages of new asexual reproductive strategies, hitherto undescribed, which produce either one or several offspring at a time. This observation challenges the prevailing hypothesis that chitinozoans are eggs of cryptic extinct marine metazoans. Instead, it is more plausible that they represent a new isolated group of protists.

Considerable progress has been achieved in the cryopreservation of mammalian embryos. The use of vitrification minimizes chilling injuries by increasing cooling and warming rates. This study assesses the effect of vitrification using the minimum volume cooling (MVC) method (Kuwayama & Kato 2000 J. Assist. Reprod. Genet. 17, 477) on in vitro-produced bovine and ovine embryos. A total of 1756 ovine and 753 bovine cumulus-oocyte complexes were obtained from the abattoir and matured, fertilized (Day 0) and cultured in vitro (Walker et al., 1996 Biol. Reprod. 55, 703–708, Kelly et al., 1997 Theriogenology 47, 291). Overall cleavage rates were 93.7% and 80.5% respectively. Embryos were vitrified (OPS or MVC method) on Days 5 (morula, compact morula), 6 (expanded blastocyst, blastocyst, compact morula) or 7 (hatched and hatching blastocysts, expanded blastocyst, blastocyst). Embryos were equilibrated with 7.5% ethylene glycol (EG) and 7.5% dimethyl sulfoxide (DMSO) for 3min and then exposed to 16.5% EG, 16.5% DMSO, 0.5M sucrose and 20% FCS for 30s. Embryos were loaded onto either an MVC plate (Cryotop, Kitazato Supply Co, Toyko, Japan) or open pulled straw (OPS) and plunged into liquid nitrogen. After 5 days, embryos were thawed directly into 1.25M sucrose solution at 38.5°C, followed by stepwise dilution of the cryoprotectants. Embryo survival was assessed by culture to Day 8 and compared to the development of non-vitrified control embryos (Table 1). Variables were assessed using procedure CATMOD in SAS. The Cryotop method yielded a significantly higher percentage of viable ovine embryos after thawing compared with OPS (P<0.0001); neither day nor treatment x day interaction was significant (P>0.05). A significant interaction between vitrification treatment and day (P<0.007) indicated that the percentage of hatched embryos peaked at Day 6 using the Cryotop method compared with Day 7 for OPS. Hatching rates for fresh and vitrified embryos were similar at Day 7 and were independent of treatment. With the Cryotop method, day of vitrification did not influence the percentage of Days 6 and 7 bovine embryos that hatched after thawing but, on each day, this figure was significantly higher (P<0.003 and P<0.0001, respectively) than that obtained with fresh embryos. To further assess embryo viability, 36 fresh, 52 OPS and 56 Cryotop vitrified Day-6 in vitro-produced ovine embryos were transferred to synchronized recipients. Survival rates to Day 13 were 29/33 (87.9%), 23/36 (63.9%) and 42/51 (82.4%), respectively (P<0.05). This study demonstrates that using the MVC Cryotop method, the viability of vitrified embryos, as assessed at Days 8 and 13, is similar to that obtained with fresh embryos. Table 1

Accurate identification of parasitoids is crucial for biological control of the invasive brown marmorated stink bug, Halyomrpha halys (Stål). A recent work by Talamas et al. (2017) revised the Palearctic fauna of Trissolcus Ashmead, egg-parasitoids of stink bugs, and treated numerous species as junior synonyms of T. semistriatus (Nees von Esenbeck). In the present paper, we provide a detailed taxonomic history and treatment of T. semistriatus and the species treated as its synonyms by Talamas et al. (2017) based on examination of primary types, molecular analyses and mating experiments. Trissolcus semistriatus, T. belenus (Walker), T. colemani (Crawford), and T. manteroi (Kieffer) are here recognized as valid and a key to species is provided. The identification tools provided here will facilitate the use of Trissolcus wasps as biological control agents and as the subject of ecological studies.

AbstractA cytotaxonomic study was carried out on 13 species of Encarsia Förster, known to parasitize aleyrodids and diaspidids. The chromosomes varied greatly both in number and morphology, with E. protransvena Viggiani having the lowest chromosome number (2n = 6) and E. asterobemisiae Viggiani & Mazzone the highest (2n = 20). The most common chromosome number was 2n = 10. C-banding, G-banding and silver staining for nucleolar organizer regions (NOR) provided the possibility of distinguishing between karyotypes with the same chromosome number and morphology and to identify all the pairs of homologues in a diploid set for advanced cytogenetic studies. The karyotype of Coccophagus lycimnia (Walker) was also examined. The chromosome data suggested that in Encarsia, karyotype differentiation has mainly occurred through a series of centric fusions, although other rearrangements may also have been significant. The importance of karyological data in systematic studies and in the identification of biotypes and cryptic species of economic interest is outlined.

ABSTRACT Our current understanding of segregation of prokaryotic plasmids has been derived mainly from the study of the gram-negative bacterial plasmids. We previously reported a replicon of the cryptic plasmid from a gram-positive bacterium, Leifsonia xyli subsp. cynodontis. The replicon contains a putative plasmid partition cassette including a Walker-type ATPase followed by open reading frame 4 without sequence homologue. Here we reported that the orf4 gene was essential for maintaining the plasmid stability in L. xyli subsp. cynodontis. Furthermore, the purified orf4 protein specifically and cooperatively bound to direct repeat sequences located upstream of the parA gene in vitro, indicating that orf4 is a parB gene and that the direct repeat DNA sequences constitute a partition site, parS. The location of parS and the features of ParA and ParB proteins suggest that this plasmid partition cassette belongs to type Ib, representing the first type Ib cassette identified from a gram-positive bacterial plasmid.

Two species complexes within the genus Xylophanes are addressed using a combination of morphological study and analysis of DNA barcode sequences. The existence of two and three cryptic species respectively within the X. loelia and X. neoptolemus complexes is revealed following consideration of both adult habitus and genital morphology, and the results of a phylogenetic analysis of partial COI sequences—DNA barcodes—for 38 specimens. The taxonomic status of the available names is discussed and to clarify and stabilize the confused nomenclature of this group, a neotype for Sphinx neoptolemus Cramer, 1780, and lectotypes for Choerocampa loelia Druce, 1878 and Chaerocampa trilineata Walker, [1865], are designated. We describe three new species: X. lolita n. sp. Vaglia and Haxaire; X. balcazari n. sp. Haxaire and Vaglia; and X. cthulhu n. sp. Haxaire and Vaglia. The first is endemic to southeastern Brazil and closely allied to X. loelia; the second two are relatives of X. neoptolemus, of which the first is known only from Guerrero and Michoacán states in Mexico while the second is widely distributed in lowland forests of Central America.

ABSTRACTJacob’s Well, located in modern city of Nablus and ancient Shechem (Tall Balata) in the northern West Bank of Palestine, attracts modern day tourists and pilgrims. It is found in the eastern suburbs of the city. Since 333 AD, pilgrims have been writing accounts of the well, and it has been venerated by both Christian and Jewish communities throughout its history. It is believed to be the well referred to in the New Testament, where Jesus conversed with a Samaritan woman, the orthodox saint, Photini. It now forms the central feature in the crypt of the St Photini Greek Orthodox church in the walled grounds of a monastery. In order to gain more information on the chronology of the site, we analyzed human skeletal remains found at the site in 1997. These consist of three skulls and a femur. One of the skulls was found in a sarcophagus alongside the church and the two other skulls and a femur were found in a burial ground alongside the monastery, north of the church, over which a room has now been built. Radiocarbon analysis reveals that the remains date to four historical periods or events: the early Christian period, before structural additions to the well by Constantine the Great in the fourth century; the Samaritan Revolts (AD 529 and 556), the Sassanid Invasion (AD 614–628), and Abbasid rule (AD 750–1258). Dating of one skull suggests it may have been that of Germanus, a fourth century bishop of Nablus, and that there may have been a very early structure, shrine, or burial chamber at the site before the fourth century. We provide contextual information based on historical and contemporary literature.

The Australian Anthracini are revised. In all, 28 new species are described, bringing the total fauna to 34 species. The previously described species of Anthrax Scopoli – A. maculatus Macquart, A. incomptus Walker, A. confluensisRoberts, A. lepidiotus Roberts and A. proconcisus Hardy – are diagnosed and the following eight new species of Anthrax are described: A. argentia, A. asciculus, A. clinatus, A. crenatus, A. dolabratus, A. funestus, A. opacus and A. torulus. This taxonomic study reveals a group of at least 20 cryptic species previously included in collections under the name Anthrax angularis Thomson. A new genus, Thraxan, is erected to contain this cryptic group of species and the following 20 new species are described: T. acutus, T. abditus, T. caligneus, T. cinctus, T. cornuatus, T. depressus, T. echinatus, T. ebenus, T. emicatus, T. hamulus, T. luteus, T. misatulus, T. nodus, T. norrisi, T. obstipus, T. patielus, T. planus, T. prolatus, T. simulatusand T. spiculus. Many of these cryptic species have been collected sympatrically, hill topping together in eastern Australia. A key is provided to the species of Anthrax and Thraxan, genitalia drawings are presented for most species and distribution maps of all species are presented. A cladistic analysis of the species of Anthrax and Thraxan is also presented. A total of 26 of the species is compared for 125 synapomorphies in 39 adult morphological characters. Three species-groups were found: Thraxan, and two species-groups within Anthrax, the A. proconcisus species-group and the A. maculatusspecies-group. Previous authors divided Anthrax into species-groups on the basis of wing patterns, but found that these species-groups were not confirmed when other characters were taken into consideration. We studied the congruence of seven different character sets within the clade comprising Anthrax and Thraxan – antennae, venation, wing patterns, vestiture, genitalia, male genitalia and female genitalia – using several incongruence indices. Significance of incongruence was measured using a randomisation procedure. Results of these studies indicate that the wing-pattern character set is significantly incongruent with the other morphological data. These quantitative cladistic results explain the difficulty previous authors experienced in finding suites of characters to support species-groups in Anthrax on the basis of wing patterns. A relationship is found between the level of incongruence and the distance over which mate-recognition signals operate.

Previously we reported that, using the minimum volume cooling (MVC) cryotop vitrification method, in vitro-produced ovine and bovine embryo survival after thawing was similiar to that of fresh embryos (Kelly et al. 2004 Reprod. Fert. Dev. 16, 172). While survival of vitrified embryos after thawing can be indicative of embryo viability, this assessment does not always correlate with embryo survival after transfer. This study assesses the effect of vitrification using the MVC cryotop method on the survival after transfer of in vitro- and in vivo-produced ovine embryos. Fresh or vitrified Day 6 ovine embryos (expanded blastocysts, blastocysts, compact morulae) were used in this study. Ovine cumulus–oocyte complexes were obtained and matured, fertilized (Day 0), and cultured in vitro (Walker et al. 1996 Biol. Reprod. 55, 703–708). In vitro embryos for vitrification were produced and vitrified (Kelly et al. 2004 Reprod. Fert. Dev. 16, 172) 10 days prior to the day of transfer. In vivo embryos were recovered from donor Merino ewes and vitrified 7 days prior to the day of transfer while fresh in vivo embryos were collected and transferred on the same day. Semen used for both in vivo and in vitro embryo production was from the same sire. On the day of transfer, vitrified embryos were thawed directly into 1.25 M sucrose solution, followed by stepwise dilution of the cryoprotectants. Embryos were transferred as singles into synchronized recipient ewes on a randomized basis. Fetal number was detected at Day 50. Variables were assessed using the CATMOD procedure in SAS. Pregnancy rate for in vivo-derived embryos was higher (P < 0.01) than for in vitro-derived embryos. Embryo treatment (fresh vs. vitrified) did not significantly affect pregnancy rate. Pregnancy rate for ewes detected (by vasectomized rams) in estrus within 48 h of progesterone pessary removal was higher (P < 0.05) than for both the 48–68 h and unmarked groups. The latter two groups did not differ significantly. None of the first-order interactions were significant (P > 0.05). This study demonstrates that ovine embryos (in vitro and in vivo) can be vitrified, thawed, and transferred without compromising embryo viability. However, the differences in pregnancy rate between the recipient groups warrant further investigation. The MVC cryotop method is a vitrification technique that can be adapted to routine field use. Table 1. Pregnancy rate of fresh and vitrified in vivo and in vitro ovine embryos after embryo transfer

Onychophorans, or velvet worms, are cryptic but extremely charismatic terrestrial invertebrates that have often been the subject of interesting biogeographic debate. Despite great interest, a well resolved and complete phylogeny of the group and a reliable chronogram have been elusive due to their broad geographic distribution, paucity of samples, and challenging molecular composition. Here we present a molecular phylogenetic analysis of Onychophora that includes previously unsampled and undersampled lineages and we analyse the expanded dataset using a series of nested taxon sets designed to increase the amount of information available for particular subclades. These include a dataset with outgroups, one restricted to the ingroup taxa, and three others for Peripatopsidae, Peripatidae and Neopatida (= the Neotropical Peripatidae). To explore competing biogeographic scenarios we generate a new time tree for Onychophora using the few available reliable fossils as calibration points. Comparing our results to those of Cyphophthalmi, we reconsider the hypothesis that velvet worms reached Southeast Asia via Eurogondwana, and conclude that a more likely scenario is that they reached Southeast Asia by rafting on the Sibumasu terrane. Our phylogenetic results support the reciprocal monophyly of both families as well as an early division between East and West Gondwana, also in both families, each beginning to diversify between the Permian and the Jurassic. Peripatopsidae clearly supports paraphyly of South Africa with respect to southern South America (Chile) and a sister group relationship of the Southeast Asian/New Guinean Paraperipatus to the Australian/New Zealand taxa. The latter includes a clade that divides between Western Australia and Eastern Australia and two sister clades of trans-Tasman species (one oviparous and one viviparous). This pattern clearly shows that oviparity is secondarily derived in velvet worms. Peripatidae finds a sister group relationship between the Southeast Asian Eoperipatus and the West Gondwanan clade, which divides into the African Mesoperipatus and Neopatida. The latter shows a well supported split between the Pacific Oroperipatus (although it is unclear whether they form one or two clades) and a sister clade that includes the members of the genera Peripatus, Epiperipatus, Macroperipatus and representatives of the monotypic genera Cerradopatus, Plicatoperipatus and Principapillatus. However, Peripatus, Epiperipatus and Macroperipatus are not monophyletic, and all the species from the monotypic genera are related to geographically close species. The same goes for the type species of Macroperipatus (from Trinidad, and sister group to other Trinidad and Tobago species of Epiperipatus) and Epiperipatus (from French Guiana, and related to other Guyana shield species of Epiperipatus and Peripatus). Geographic structure within Neopatida is largely obscured by an unresolved backbone, but many well supported instances of generic non-monophyly challenge the current taxonomic framework, which has often relied on anatomical characters that are untested phylogenetically.

The emergence of “virtual currencies” is extremely recent, with a history of only 13 years. Being an ultra-new economic tool, it arouses interest and effervescent reactions, especially in terms of definition, but also about the cumulative effects it has begun to produce in the economic world. The subject also becomes controversial due to the fact that, being an economic instrument of absolute novelty, it is reflected in the legislation of very few countries in the world. One of the definitions determines as virtual currency – the digital representation of the value that is not issued or guaranteed by a central bank or a public authority, which is not necessarily linked to a legal currency and which does not have the legal status of the currency, but which can be accepted by natural or legal persons as a means of exchange and which may be transferred, stored and traded by electronic means. The evaluation of cryptocurrency publications has shown that most of them are related to attempts to establish legislative agricultural work for the operation of virtual currencies. The functions of the cryptocurrencies that we have defined are: the exchange and payment function, the hoarding function, the investment function and the attraction of funds necessary for the activity. Thus, we established that virtual currencies, as well as fiduciary ones, have the role of: means of payment, means of accumulation, means of capitalization and investments. Likewise, through this research we managed to highlight the main features and peculiarities of cryptocurrencies. Among the basic characteristics of cryptocurrencies we highlight: the high degree of security, maximum speed of transactions, full freedom from financial organizations, irreversibility of operations, full anonymity of transactions, open source, they can be ”mined”. Another approach was to determine the advantages and disadvantages and risks of using cryptocurrencies. The main advantages of using cryptocurrencies are related to its functions an caracteristics, such as: it represents a real alternative to classic banking services, market freedom, privacy of transactions, high speed of trnasactions, alternative payment methos, increasing the customer base etc. On the other hand there are some disatvantages. They are related mosly with the following risks: legal uncertainty, market volatility, low degree of acceptance, unsecured crypto wallets, risks related to use for illegal or criminal purposes, money laundering risks. Taking in consideration the global trend of the digitization of the society, the share and importance of fiat currencies will tend to decrease for the benefit of virtual currencies. Cryptocurrencies are becoming a real alternative to physical currencies, but its main disadvantage is that the public autorities are missing controlling it yet. Even so, in the nearest future the money could become digital figures.

The single and endemic species of Eupterote Hübner recorded from Australia is shown not to possess the male genitalia typical of this genus, nor of any other genus of Eupterotidae, and it is consequently placed in a new genus, Ebbepterote Oberprieler, Nässig & Edwards, as E. expansa (T. P. Lucas, 1891), comb. nov. Its genitalia are compared with those of many Asian and African genera of Eupterotidae, resulting in a revised classification and redefinition of the major eupterotid lineages. Five groups are defined: a probably paraphyletic 'basal' Ganisa-group and likely monophyletic subfamilies Janinae (including Tissanga Aurivillius and Hibrildes Druce), Striphnopteryginae, Eupterotinae and Panacelinae. Ebbepterote and the New Guinean 'Eupterote' styx Bethune-Baker species-complex are included in Striphnopteryginae, which is otherwise restricted to Africa. Cotana Walker is reassigned to Eupterotinae from Panacelinae and Sphingognatha Felder is resurrected from synonymy with Eupterote. The genitalia of Ebbepterote and several other critical genera are illustrated, demonstrating that the shape of the uncus does not constitute a suitable synapomorphy for defining the Eupterotidae as a monophyletic group. Another alleged eupterotid synapomorphy, the presence of a row of midventral spurs on the apical tarsal segment of the hindleg of the female, is shown to occur only sporadically in the family but also outside of it, in the lemoniid–brahmaeid–sphingid clade of Bombycoidea. As a result, the monophyly of the Eupterotidae currently rests only on a single, cryptic character of the mesoscutum of the imago and is in urgent need of substantiation.

Two billion people are infected with Mycobacterium tuberculosis, leading to 10 million new cases of active tuberculosis and 1.5 million deaths annually. Universal access to drug susceptibility testing (DST) has become a World Health Organization priority. We previously developed a software tool, Mykrobe predictor, which provided offline species identification and drug resistance predictions for M. tuberculosis from whole genome sequencing (WGS) data. Performance was insufficient to support the use of WGS as an alternative to conventional phenotype-based DST, due to mutation catalogue limitations. Here we present a new tool, Mykrobe, which provides the same functionality based on a new software implementation. Improvements include i) an updated mutation catalogue giving greater sensitivity to detect pyrazinamide resistance, ii) support for user-defined resistance catalogues, iii) improved identification of non-tuberculous mycobacterial species, and iv) an updated statistical model for Oxford Nanopore Technologies sequencing data. Mykrobe is released under MIT license at https://github.com/mykrobe-tools/mykrobe. We incorporate mutation catalogues from the CRyPTIC consortium et al. (2018) and from Walker et al. (2015), and make improvements based on performance on an initial set of 3206 and an independent set of 5845 M. tuberculosis Illumina sequences. To give estimates of error rates, we use a prospectively collected dataset of 4362 M. tuberculosis isolates. Using culture based DST as the reference, we estimate Mykrobe to be 100%, 95%, 82%, 99% sensitive and 99%, 100%, 99%, 99% specific for rifampicin, isoniazid, pyrazinamide and ethambutol resistance prediction respectively. We benchmark against four other tools on 10207 (=5845+4362) samples, and also show that Mykrobe gives concordant results with nanopore data. We measure the ability of Mykrobe-based DST to guide personalized therapeutic regimen design in the context of complex drug susceptibility profiles, showing 94% concordance of implied regimen with that driven by phenotypic DST, higher than all other benchmarked tools.

AbstractAlthough several factors influence herbivore insect distributions at any particular scale, the most important determinants are likely to differ between species with different life histories. Identifying what these factors are and how they relate to life history forms an important component of understanding the population dynamics of species, and the habitat requirements necessary for their conservation. The pupal stage of two wild silk moth species, Gonometa postica Walker and G. rufobrunnea Aurivillius (Lepidoptera: Lasiocampidae), is the target of harvesting practices that are totally dependent on the availability of pupae from natural populations. Consequently, and partly due to poor knowledge of the species' biology, there is substantial interest in the distribution of pupae among and within trees for both these species. It was investigated whether between- and within-tree pupal distributions in these two species are non-random, and if so, whether there are relationships between pupation site use and tree characteristics such as tree size, available pupation space and branch position. Between-tree patterns in pupal abundance were random in terms of absolute spatial position, but markedly non-random with respect to tree characteristics. The apparent G. postica pupae were aggregated on large larval host plants, whereas the cryptic G. rufobrunnea pupae were aggregated on non-host plants. These patterns reflect the life history differences of the two species. In contrast, at the within-tree scale, branch position, aspect and tree shape influenced pupation site choice similarly for both species. These patterns might be related to microclimate. Documenting between-tree and within-tree patterns in Gonometa pupal distributions is the first step towards explaining pupation site selection, as well as identifying possible evolutionarily selective factors in the species, and generating testable hypotheses from these.

Context Dogs are often used to find rare or cryptic species, but search methods are not standardised, making it difficult to interpret and compare results. Standardised approaches are needed to optimise search effectiveness and/or efficiency. Designing an optimal search strategy requires knowledge of the effective sweep width, which is related to the probability of detection (POD) at various distances between the searcher and the search object. Aims Our primary aim was to estimate effective sweep width for wildlife-detector dogs searching for rodents. We also tested whether dogs differed in their reaction on encountering a laboratory rat (Rattus norvegicus) or a wild-caught Norway rat (wild-type R. norvegicus). Methods We conducted field trials using trained rodent-detector dogs to locate dead laboratory rats. We used the numbers of detections and non-detections at distances of 0–100 m to estimate detection probability and effective sweep width. Key results Dog teams located 100% of rats (regardless of strain) placed directly in their search path. POD declined rapidly with an increasing distance, yielding an observed detection rate of 33% at 10 m, and close to zero at ≥20 m. The data were best described by an exponential decay function. Effective sweep width was estimated to be 16.8 m (95% confidence interval 12.3–21.4 m), corresponding to a strip extending 8.4 m on either side of a walked track. Handlers could not consistently judge whether a dog had encountered a laboratory rat or a wild rat. Conclusions Our results suggest that when dogs are >10 m from a source of rat odour, POD declines sharply. We estimate that the effective distance explored when searching for a stationary rodent is 8.4 m either side of the search path. Implications This information will allow users to optimise the search pattern that dog teams should follow for a given search scenario.

Studies have shown that supplementation with hyaluronic acid (HA), a glycosaminoglycan found in mammalian follicular, oviduct, and uterine fluids, improves in vitro development and post-thaw survival of bovine embryos. In this study, we examined the effect of HA supplementation on ovine embryo development and on survival after vitrification using the minimum volume cooling (MVC) cryotop method. Abattoir sourced ovine oocytes were in vitro matured and fertilized as per routine procedures (Walker et al. 1996 Biol. Reprod. 55, 703–708). In Experiment 1 (5 replicates), presumptive zygotes were randomly allocated to IVC medium supplemented with 0.8 mg mL–1 BSA, amino acids, and 0, 0.5, 1.0, 1.5 or 2.0 mg mL–1 HA. Cleavage rates were recorded and blastocyst development evaluated on Day 7 (Day 0 = day of IVF). In Experiment 2 (3 replicates), presumptive zygotes were placed in in vitro culture (IVC) medium with or without 1.0 mg mL–1 HA. Embryos were vitrified using the MVC cryotop method (Kelly et al. 2004 Reprod. Fert. Dev. 16, 172) on either Day 5 (morula–blastocyst stages), Day 6 (compact morula–hatching blastocyst stages), or Day 7 (blastocyst–hatching blastocyst stages). Vitrified embryos were thawed 7 days later and placed into IVC medium. Embryo survival (assessed by blastocoele re-expansion) and hatching rates were recorded on Day 8. Variables were assessed using procedure CATMOD in SAS (SAS Institute Inc., Cary, NC, USA). In Experiment 1, the addition of HA did not affect cleavage or blastocyst formation rates but hatching rates were significantly (P < 0.05) improved at concentrations of 0.5 to 1.5 mg mL–1 (Table 1). In Experiment 2, HA supplementation (1.0 mg mL–1) compared with control medium did not affect cleavage (96.8 and 97.1%, respectively) or blastocyst formation rates (68.6 and 70.2%, respectively). HA significantly (P < 0.05) improved survival after thawing of embryos vitrified on Day 5 (100 v. 85.6%, n = 85 and 90). However no effect was observed when embryos were vitrified on either Day 6 (97.8 v. 97.8%, n = 91 and 92) or Day 7 (96.7 v. 97.9%, n = 92 and 94). Within day, HA supplementation did not affect hatching rate compared with control medium (Day 5, 54.1 v. 53.2%; Day 6, 62.9 v. 65.6%; Day 7, 71.9 v. 62.0%, respectively). These results demonstrate that HA supplementation of IVC medium significantly improves hatching rate of ovine embryos and we speculate that this improvement may correlate with comparable improvements in pregnancy rates after transfer. Hyaluronic acid binds to CD44, a glycoprotein expressed on the surface of preimplantation ovine embryos and shown to play a role on embryo development (Luz et al. 2012 Genet. Mol. Res. 11, 799–809). Hyaluronic acid plays a role in cell migration and we suggest that, in the early blastocyst, it affords an advantage to the trophectoderm cells. Table 1.Effect of hyaluronic acid (HA) supplementation in IVC medium on cleavage, blastocyst, and hatching rates

Botrytis cinerea has previously been shown to consist of two sibling species, referred to as Group I and Group II, that can be differentiated by PCR-RFLP analysis of the Bc-hch gene, a vegetative incompatibility locus (1). Group I has recently been described as a new cryptic species, B. pseudocinerea (4). Gray mold caused by B. cinerea is a major postharvest disease of blueberries in the Central Valley of California. In 2012 and 2013, blueberry fruit were sampled at harvest from various locations in the region and stored at 0 to 1°C for 5 weeks, and fungi were isolated from decayed fruit. In total, 526 isolates of Botrytis spp. were obtained. Genomic DNA was extracted and PCR-RFLP of a fragment of the Bc-hch gene was performed. Four isolates showed the distinctive restriction band pattern associated with Group I (1). The identity of these four isolates was further investigated by sequencing portions of four genes: internal transcribed spacer region, glyceraldehyde-3-phosphate dehydrogenase (G3PDH), heat-shock protein 60 (HSP60), and DNA-dependent RNA polymerase subunit II (RPBII), using the primers described previously (3,4). Sequences were deposited in GenBank (Accession Nos. KJ796643 to 58). BLAST analysis showed that sequences of all four genes for the four isolates were 99.8 to 100% similar to those of B. pseudocinerea. Morphological characteristics of the four blueberry isolates were examined as described previously (4). On potato dextrose agar, colonies were gray; the mycelial growth rate was 26 mm/day at 19°C in the dark. Conidiophores were simple and erect, and conidia were borne in grapelike clusters, one celled, hyaline, elliptical to ovoid, 6.5 to 15.7 × 5.6 to 9.8 μm (average of 7.4 × 10.1 μm). As reported previously, none of the morphological characters was able to differentiate between B. cinerea and B. pseudocinerea (4). To test pathogenicity, freshly harvested organic blueberry fruits were treated with 0.5% sodium hypochlorite for 2 min, rinsed with sterile water, wounded using a sterile needle, and inoculated by placing 1 μl of a conidial suspension (1.0 × 105 spores/ml) from each isolate into the wound with a pipette. Inoculated fruit (10 for each isolate) were incubated at 20°C for 5 days in the dark. Experiments were performed twice. All inoculated fruit developed rot, and no decay was observed on the noninoculated controls. All four isolates of B. pseudocinerea were pathogenic, and the fungus was re-isolated from decayed fruit. B. pseudocinerea isolates are known to be naturally insensitive to fenhexamid (1,4). Sensitivity of the four isolates to fenhexamid was examined in vitro as previously described (4). The EC50 values for fenhexamid for the four isolates ranged from 7.7 to 9.9 μg/ml and isolates were considered resistant to fenhexamid (1,4). Based on the morphological, physiological, and genetic characteristics, the four blueberry isolates were identified as B. pseudocinerea. It appeared that this species was present at very low frequency (0.76%) in blueberry fields in California. Previously, B. pseudocinerea has been reported from French, German, and New Zealand vineyards (1,2,4). To our knowledge, this is the first report of B. pseudocinerea causing gray mold in blueberry in California and in North America. References: (1) E. Fournier et al. Mycologia 95:251, 2003. (2) P. R. Johnston et al. Plant Pathol. 63:888, 2014. (3) M. Staats et al. Mol. Biol. Evol. 22: 333, 2005. (4) A.-S. Walker et al. Phytopathology 101:1433, 2011.

A digital wallet is an electrical device or application troughwhich users can preform different types of transactions. They aredivided into two categories of cold and hot digital wallets. Thefirst category includes digital wallets that require an internetconnection and the second category includes digital wallets thatdo not require internet connection. When selecting a wallet, it isnecessary to determine the purpose of using a wallet and thenmake a purchase. The use of digital wallets is reflected in variouscharacteristics. The convenience of using the ability to execute amobile phone transaction in matter of seconds. Efficiency isreflected in the speed of transaction execution. Data organizationis one of the key features of digital wallets. The cost of usingdigital wallets is far less than the traditional way to carry outtransactions, which includes different commissions andpayments. Security of digital wallets is at high level. Every daythere is a growing need for their use because of security, speed,transactions between two users without third party assistance.This paper describes the current state of digital wallets on themarket, the choices of a better solution for purchasing and usingdigital wallets, security of digital wallets and future trends intheir development.

The article is dedicated to the actual problems of creation, intervention and introduction of electronic money crypto-currency and blockchain technology at the modern stage. Rather narrow description is given to essence, the history of invention and the types of crypto currency (bit coin, ethereum, etc.,), advantages and defects of their use, the electronic wallet and its types, situation of the electronic money introduc tion in Georgia, the global crypto currency spread and the tendencies and prospective of its possible recognition, assessed is significance of the electronic money in manufacturing, based on the modern technical-technological achievements, money-reporting field, maximally just relations creation and by this - further growth of the economic development and accordingly the permanent enhancement of the living standards of the populations.

Recent developments have accelerated to move in India towards a Cashless economy. The Jan Dhan Yojana (Jan Dhan Government Scheme) announced in 2014 is providing for the cost free creation of a bank account for every Indian family. Each bank account is also accompanied by a Rupay Debit card for withdrawing money deposited in the account. The currency demonetization at the end of the year 2016, with the removal of certain denomination of bank notes. The additional initiatives and service offerings are also now encouraging the use of cashless transaction via, online banking, payment cards, e-wallets, direct carrier billing and crypto currency. A study said, as India changes to a large scale economy, cyber dangers are in a new high with the amount of these incidents happening in banking methods rising in the previous five decades. The research demonstrated that demonetization has provided an impetus into e-wallet providers and cellular wallets have seen a huge growth in downloads. Additionally, cyber- risks will only grow as India will be seeing a change towards a strong economy. The kinds of cyber security events like Phishing, scanning, site intrusions and defacements, virus code and denial of service attacksmay keep growing. The joint research by Assocham and PWC stated on ATM card hackstruck on the Indian banks in October this past year, impacting approximately 3.2 million debits. The cyber strikes on Indian sites have increased almost five times before four decades.

Purpose The aim of this paper is to assess the relevance of cryptocurrencies with regard to the money laundering risk on the market and to present widespread money laundering techniques and recognizable patterns of abuse. In addition, this paper aims to find an answer to the question to what extent the measures of the fifth EU Anti-Money Laundering Directive (AMLD) as well as other appropriate preventive measures are sufficient to reduce the money laundering risk in the area of virtual currencies (VC). Design/methodology/approach Firstly, the analysis requires a consideration of the theoretical foundations of money laundering methods, as well as a presentation of the technical foundations of cryptocurrencies and their ecosystem. Secondly, it is discussed to what extent VC are suitable for money laundering, which characteristics enable them to launder money and which new money laundering techniques result from this. In addition, a comparison of different money laundering risk classification is done in relation to VC from the perspective of different actors in the financial market. Findings Owing to their simple electronic storage and transferability, crypto assets pose a concrete risk of money laundering. Their inclusion in the fifth AMLD was therefore a necessary step by the European legislator. However, the question arises to whether the directive and the further preventive measures presented in this paper sufficiently fulfil the objective of reducing the money laundering risk in relation to VC. One positive aspect is the inclusion of the crypto custody business as a financial service in the German Banking Act. According to the definition in Section 1 (1a) sentence 2 no. 6, the offering of wallets is subject to authorization and the offering party becomes an obligated party within the meaning of the Germany Money Laundering Act. From a supervisory point of view, the new licensing requirement is very much welcomed, as the custody of private cryptographic keys entails considerable risks. However, non-custodian wallet providers who do not store the private keys of their users, are not covered. A closer analysis of the amending directive to the fourth EU AMLD reveals that other relevant players in the crypto market, such as mixer and tumbler services, are also not covered. Originality/value It is quite clear that cryptocurrencies and the blockchain technology will continue to accompany one in the coming years. Further credit institutions arising in the market exposed to the described risks will be seen. The paper will therefore present and evaluate possible risk reduction/options for anti-money laundering for new and existing financial institutions.

The red-hot crypto currency is a bitcoin which occupies first position in the capital investment of financial world which is assaulted by various factors like wallet attacks, network attacks, mining attacks and double spending attacks. Double spending is the major attack in which the attacker tries to cheat the network nodes and use the same coin for more than one set of transactions. Of this the original transaction identification from the set of transactions is a challenging one. In this paper we propose a solution for identifying the primary transaction from the set of double spended or multi spended transactions. The proposed approach finds the authentic transaction from the list of double spended transactions using transaction hash value, which is primarily used for every transaction in the Bitcoin network. Transaction hash value is used as transaction identifier for each bitcoin transaction. By comparing the transaction hash value with the existing pool of unconfirmed input pool, transhash pool and utxopool one can identify the genuine transaction from the flawed transaction list. The firsthand transaction is then added to the Confirmed input pool which is then entered into the newly added block of the blockchain. This architecture will prevent the double spend of bitcoin further in the network which facilitates the network nodes as well as minimize the miners task for verification and validation of transaction.

Crypts are very thin walled invaginations from the cavity of the left ventricle into the compact myocardium. With the advent and increased application of multimodality imaging, crypts are being increasingly identified in both normal individuals and patients, with various conditions including HCM, before and after the development of LV hypertrophy, LV non-compaction and hypertensive heart disease. to date crypts have not been described in the right ventricle. We here describe for the first time, RV crypts which were extending into a myocardial bridge, in a patient with HCM and dynamic obstruction of the LAD coronary artery. We also document and discuss the serious complications which can arise from crypts, and highlight the importance of preoperative identification of crypts. Further studies are required to determine the fetal origin of crypts and their clinical significance

Payment systems form an integral part of any emerging economy. A payment system should be safe, secure, reliable, and accessible. It will help in expanding financial inclusion and bringing financial stability. An efficient payment system helps in the smooth flow of payments and mitigation of risks and smooth functioning of the economy. It helps in fostering confidence in individuals about the use of payment services. Technological development has helped in changing the face of payments system from cards (credit/debit card) to wallets (Paytm/Phonepe etc.) to Unified Payments Interface (UPI) and Quick Response (QR)codes. It has not only introduced us to new payment methods but also strengthen the traditional payment methods. It has become an important part of our daily life. It has empowered us and made our life easier by offering services at our fingertips round the clock. The latest addition to these is cryptocurrencies like Bitcoin, Ether, Ripple, etc. Cryptocurrencies are one of the first applications of Blockchain technologies.it has removed the need for intermediaries and exert pressure on the existing framework. The attributes of cryptocurrency framework like decentralized network, no intermediaries, and the lack of stable pricing factors do not let it unlock its true potential. The future of Cryptocurrency is uncertain. Whether it will be accepted globally or still be traded via unauthorized means. Every problem allows for finding a solution. The regulators should come up with policies, which will help in shaping the payments system for the betterment of the people, by using the positive attributes of cryptocurrencies and coordinating with the Global peers.

Abstract The ectomycorrhizal genus Lactifluus is known to contain many species complexes, consisting of morphologically very similar species, which can be considered cryptic or pseudocryptic. In this paper, a thorough molecular study is performed of the clade around Lactifluus deceptivus (originally described by Peck from North America) or the deceptive milkcaps. Even though most collections were identified as L. deceptivus, the clade is shown to contain at least 15 species, distributed across Asia and America, indicating that the L. deceptivus clade represents a species complex. These species are morphologically very similar and are characterized by a tomentose pileus with thin-walled hyphae and a velvety stipe with thick-walled hyphae. An ITS1 sequence was obtained through Illumina sequencing for the lectotype of L. deceptivus, dating from 1885, revealing which clade represents the true L. deceptivus. In addition, it is shown that three other described species also belong to the L. deceptivus clade: L. arcuatus, L. caeruleitinctus and L. mordax, and molecularly confirmed that L. tomentoso-marginatus represents a synonym of L. deceptivus. Furthermore, two new Neotropical species are described: Lactifluus hallingii and L. domingensis.

Abstract The Holarctic species Cirrospilus vittatusWalker, 1838 (Hymenoptera: Eulophidae) is an important parasitoid of lepidopteran, dipteran, coleopteran, and hymenopteran leaf miners. One of the defining characteristics of the species has been its presumed extensive color variation, with individuals ranging from almost completely dark metallic green or blue to completely yellow with no metallic markings. An integrative approach utilizing morphological and molecular data (28S-D2, COI, ITS2) reveals that C. vittatus sensu lato in North America is a species complex comprised of at least four distinct, sometimes sympatric, species that can attack the same host. This species complex emerges as a monophyletic group, separate from Cirrospilus s.s., which we designate Burkseus gen. n. The species Burkseus vittatus comb. n. is redefined and has a Holarctic distribution, and B. flavoviridis (Crawford) comb. n. is reinstated from synonymy with B. vittatus. The following combinations are also proposed: B. elongatus (Bouček) comb. n., B. pinicolus (Askew) comb. n., and B. singa (Walker) comb. n. The following species are described as new: Burkseus sigillatus n. sp. and B. robustus n. sp. Some of the species are sympatric at several locations, but they remain molecularly and morphologically distinct. The delimitation of these species impacts our ability to assess their potential as biological control candidates against Citrus Leafminer, Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae), and future invasive leaf miner threats.

Abstract Background Iroko gall bug, Phytolyma fusca Walker, is a major insect pest of Milicia excelsa (Iroko) seedling hampering its propagation in West Africa. Milicia excelsa is an indigenous forest timber tree in the tropical rain forest of West Africa with a very high value in international trade due to its wood quality. Sustainable management of P. fusca infestations on Iroko seedlings have not been achieved due to their cryptic nature and multivoltine generations. This study evaluated the residual and contact effects of crude ethanol and aqueous extracts of four plants (Azadirachta indica, Jatropha curcas, Piper guineense, and Aframomum melegueta) on adult P. fusca in the laboratory and field. Results All the extracts had residual effects and contact effects on adult insects in the laboratory at 75% and 100% concentrations of applications. Azadirachta indica, P. guineense, and A. melegueta gave 80–100% adult mortality at both concentrations in the laboratory; their efficacies were comparable to cypermethrin. The ethanol extracts of P. guineense and A. indica were more effective than other extracts in protecting the seedlings against Phytolyma infestations in the field. They significantly (p < 0.01) reduced infestation compared to other extracts and control. Ethanol extracts of the tested plant materials were more effective than their aqueous extracts both in the laboratory and field. Conclusion The results proved that P. guineense and A. indica extracts were very potent and promising in protecting Milicia excelsa seedlings against Phytolyma fusca infestations and they can be used in the early management of Phytolyma infestations in the field.

The present monograph includes general systematic considerations on the family Epimeriidae, a revision of the genus Epimeria Costa in Hope, 1851 in the Southern Ocean, and a shorter account on putatively related eusiroid taxa occurring in Antarctic and sub-Antarctic seas. The former epimeriid genera Actinacanthus Stebbing, 1888 and Paramphithoe Bruzelius, 1859 are transferred to other families, respectively to the Acanthonotozomellidae Coleman & J.L. Barnard, 1991 and the herein re-established Paramphithoidae G.O. Sars, 1883, so that only Epimeria and Uschakoviella Gurjanova, 1955 are retained within the Epimeriidae Boeck, 1871. The genera Apherusa Walker, 1891 and Halirages Boeck, 1891, which are phylogenetically close to Paramphithoe, are also transferred to the Paramphithoidae. The validity of the suborder Senticaudata Lowry & Myers, 2013, which conflicts with traditional and recent concepts of Eusiroidea Stebbing, 1888, is questioned. Eight subgenera are recognized for Antarctic and sub-Antarctic species of the genus Epimeria: Drakepimeria subgen. nov., Epimeriella K.H. Barnard, 1930, Hoplepimeria subgen. nov., Laevepimeria subgen. nov., Metepimeria Schellenberg, 1931, Pseudepimeria Chevreux, 1912, Subepimeria Bellan-Santini, 1972 and Urepimeria subgen. nov. The type subgenus Epimeria, as currently defined, does not occur in the Southern Ocean. Drakepimeria species are superficially similar to the type species of the genus Epimeria: E. cornigera (Fabricius, 1779), but they are phylogenetically unrelated and substantial morphological differences are obvious at a finer level. Twenty-seven new Antarctic Epimeria species are described herein: Epimeria (Drakepimeria) acanthochelon subgen. et sp. nov., E. (D.) anguloce subgen. et sp. nov., E. (D.) colemani subgen. et sp. nov., E. (D.) corbariae subgen. et sp. nov., E. (D.) cyrano subgen. et sp. nov., E. (D.) havermansiana subgen. et sp. nov., E. (D.) leukhoplites subgen. et sp. nov., E. (D.) loerzae subgen. et sp. nov., E. (D.) pandora subgen. et sp. nov., E. (D.) pyrodrakon subgen. et sp. nov., E. (D.) robertiana subgen. et sp. nov., Epimeria (Epimeriella) atalanta sp. nov., Epimeria (Hoplepimeria) cyphorachis subgen. et sp. nov., E. (H.) gargantua subgen. et sp. nov., E. (H.) linseae subgen. et sp. nov., E. (H.) quasimodo subgen. et sp. nov., E. (H.) xesta subgen. et sp. nov., Epimeria (Laevepimeria) anodon subgen. et sp. nov., E. (L.) cinderella subgen. et sp. nov., Epimeria (Pseudepimeria) amoenitas sp. nov., E. (P.) callista sp. nov., E. (P.) debroyeri sp. nov., E. (P.) kharieis sp. nov., Epimeria (Subepimeria) adeliae sp. nov., E. (S.) iota sp. nov., E. (S.) teres sp. nov. and E. (S.) urvillei sp. nov. The type specimens of E. (D.) macrodonta Walker, 1906, E. (D.) similis Chevreux, 1912, E. (H.) georgiana Schellenberg, 1931 and E. (H.) inermis Walker, 1903 are re-described and illustrated. Besides the monographic treatment of Epimeriidae from the Southern Ocean, a brief overview and identification keys are given for their putative and potential relatives from the same ocean, i.e., the Antarctic and sub-Antarctic members of the following eusiroid families: Acanthonotozomellidae Coleman & J.L. Barnard, 1991, Dikwidae Coleman & J.L. Barnard, 1991, Stilipedidae Holmes, 1908 and Vicmusiidae Just, 1990. This overview revealed the existence of a new large and characteristic species of Alexandrella Chevreux, 1911, A. chione sp. nov. but also shows that the taxonomy of that genus remains poorly known and that several ‘variable widespread eurybathic species’ probably are species complexes. Furthermore, the genera Bathypanoploea Schellenberg, 1939 and Astyroides Birstein & Vinogradova, 1960 are considered to be junior synonyms of Alexandrella. Alexandrella mixta Nicholls, 1938 and A. pulchra Ren in Ren & Huang, 1991 are re-established herein, as valid species. It is pointed out that this insufficient taxonomic knowledge of Antarctic amphipods impedes ecological and biogeographical studies requiring precise identifications. Stacking photography was used for the first time to provide iconographic support in amphipod taxonomy, and proves to be a rapid and efficient illustration method for large tridimensionally geometric species. A combined morphological and molecular approach was used whenever possible for distinguishing Epimeria species, which were often very similar (albeit never truly cryptic) and sometimes exhibited allometric and individual variations. However in several cases, taxa were characterized by morphology only, whenever the specimens available for study were inappropriately fixed or when no sequences could be obtained. A large number of Epimeria species, formerly considered as eurybathic and widely distributed, proved to be complexes of species, with a narrower (overlapping or not) distribution. The distributional range of Antarctic Epimeria is very variable from species to species. Current knowledge indicates that some species from the Scotia Arc and the tip of the Antarctic Peninsula are narrow range endemics, sometimes confined to one island, archipelago, or ridge (South Georgia, South Orkney Islands, Elephant Island or Bruce Ridge); other species have a distribution encompassing a broader region, such as the eastern shelf of the Weddell Sea, or extending from the eastern shelf of the Weddell Sea to Adélie Coast. The most widely distributed species are E. (D.) colemani subgen. et sp. nov., E. (E.) macronyx (Walker, 1906), E. (H.) inermis Walker, 1903 and E. (L.) walkeri (K.H. Barnard, 1930), which have been recorded from the Antarctic Peninsula/South Shetland Islands area to the western Ross Sea. Since restricted distributions are common among Antarctic and sub-Antarctic Epimeria, additional new species might be expected in areas such as the Kerguelen Plateau, eastern Ross Sea, Amundsen Sea and the Bellingshausen Sea or isolated seamounts and ridges, where there are currently no Epimeria recorded. The limited distribution of many Epimeria species of the Southern Ocean is presumably related to the poor dispersal capacity in most species of the genus. Indeed with the exception of the pelagic and semi-pelagic species of the subgenus Epimeriella, they are heavy strictly benthic organisms without larval stages, and they have no exceptional level of eurybathy for Antarctic amphipods. Therefore, stretches deeper than 1000 m seem to be efficient geographical barriers for many Epimeria species, but other isolating factors (e.g., large stretches poor in epifauna) might also be at play. The existence of endemic shelf species with limited dispersal capacities in the Southern Ocean (like many Epimeria) suggests the existence of multiple ice-free shelf or upper slope refugia during the Pleistocene glaciations within the distributional and bathymetric range of these species. Genera with narrow range endemics like Epimeria would be excellent model taxa for locating hotspots of Antarctic endemism, and thus potentially play a role in proposing meaningful Marine Protected Areas (MPAs) in the Southern Ocean.

In a media saturated world, doodles have recently received the kind of attention usually reserved for coverage of racy extra marital affairs, corrupt governance, and product malfunction. Former British Prime Minister Blair’s private doodling at a World Economic Forum meeting in 2005 raised suspicions that he, according to one keen graphologist, struggled “to maintain control in a confusing world," which infers he was attempting to cohere a scattershot, fragmentary series of events (Spiegel). However, placid-faced Microsoft CEO Bill Gates, who sat nearby, actually scrawled the doodles. In this case, perhaps the scrawls mimicked the ambience in the room: Gates might have been ‘tuning’–registering the ‘white noise’ of the participants, letting his unconscious dictate doodles as a way to cope with the dissonance trekking in with the officialspeak. The doodles may have documented and registered the space between words, acting like deposits from his gestalt.Sometimes the most intriguing doodles co-exist with printed texts. This includes common vernacular graffiti that lines public and private books and magazines. Such graffiti exposes tensions in the role of readers as well as horror vacui: a fear of unused, empty space. Yet, school children fingering fresh pages and stiff book spines for the first few times often consider their book pages as sanctioned, discreet, and inviolable. The book is an object of financial and cultural investment, or imbued both with mystique and ideologies. Yet, in the e-book era, the old-fashioned, physical page is a relic of sorts, a holdover from coarse papyrus culled from wetland sage, linking us to the First Dynasty in Egypt. Some might consider the page as a vessel for typography, a mere framing device for text. The margins may reflect a perimeter of nothingness, an invisible borderland that doodles render visible by inhabiting them. Perhaps the margins are a bare landscape, like unmarred flat sand in a black and white panchromatic photo with unique tonal signature and distinct grain. Perhaps the margins are a mute locality, a space where words have evaporated, or a yet-to-be-explored environment, or an ambient field. Then comes the doodle, an icon of vernacular art.As a modern folklorist, I have studied and explored vernacular art at length, especially forms that may challenge and fissure aesthetic, cultural, and social mores, even within my own field. For instance, I contend that Grandma Prisbrey’s “Bottle Village,” featuring millions of artfully arranged pencils, bottles, and dolls culled from dumps in Southern California, is a syncretic culturescape with underlying feminist symbolism, not merely the product of trauma and hoarding (Ensminger). Recently, I flew to Oregon to deliver a paper on Mexican-American gravesite traditions. In a quest for increased multicultural tolerance, I argued that inexpensive dimestore objects left on Catholic immigrant graves do not represent a messy landscape of trinkets but unique spiritual environments with links to customs 3,000 years old. For me, doodles represent a variation on graffiti-style art with cultural antecedents stretching back throughout history, ranging from ancient scrawls on Greek ruins to contemporary park benches (with chiseled names, dates, and symbols), public bathroom latrinalia, and spray can aerosol art, including ‘bombing’ and ‘tagging’ hailed as “Spectacular Vernaculars” by Russell Potter (1995). Noted folklorist Alan Dundes mused on the meaning of latrinalia in Here I Sit – A Study of American Latrinalia (1966), which has inspired pop culture books and web pages for the preservation and discussion of such art (see for instance, www.itsallinthehead.com/gallery1.html). Older texts such as Classic American Graffiti by Allen Walker Read (1935), originally intended for “students of linguistics, folk-lore, abnormal psychology,” reveal the field’s longstanding interest in marginal, crude, and profane graffiti.Yet, to my knowledge, a monograph on doodles has yet to be published by a folklorist, perhaps because the art form is reconsidered too idiosyncratic, too private, the difference between jots and doodles too blurry for a taxonomy and not the domain of identifiable folk groups. In addition, the doodles in texts often remain hidden until single readers encounter them. No broad public interaction is likely, unless a library text circulates freely, which may not occur after doodles are discovered. In essence, the books become tainted, infected goods. Whereas latrinalia speaks openly and irreverently, doodles feature a different scale and audience.Doodles in texts may represent a kind of speaking from the ‘margin’s margins,’ revealing the reader-cum-writer’s idiosyncratic, self-meaningful, and stylised hieroglyphics from the ambient margins of one’s consciousness set forth in the ambient margins of the page. The original page itself is an ambient territory that allows the meaning of the text to take effect. When those liminal spaces (both between and betwixt, in which the rules of page format, design, style, and typography are abandoned) are altered by the presence of doodles, the formerly blank, surplus, and soft spaces of the page offer messages coterminous with the text, often allowing readers to speak, however haphazardly and unconsciously, with and against the triggering text. The bleached whiteness can become a crowded milieu in the hands of a reader re-scripting the ambient territory. If the book is borrowed, then the margins are also an intimate negotiation with shared or public space. The cryptic residue of the doodler now resides, waiting, for the city of eyes.Throughout history, both admired artists and Presidents regularly doodled. Famed Italian Renaissance painter Filippo Lippi avoided strenuous studying by doodling in his books (Van Cleave 44). Both sides of the American political spectrum have produced plentiful inky depictions as well: roughshod Democratic President Johnson drew flags and pagodas; former Hollywood fantasy fulfiller turned politician Republican President Reagan’s specialty was western themes, recalling tropes both from his actor period and his duration acting as President; meanwhile, former law student turned current President, Barack Obama, has sketched members of Congress and the Senate for charity auctions. These doodles are rich fodder for both psychologists and cross-discipline analysts that propose theories regarding the automatic writing and self-styled miniature pictures of civic leaders. Doodles allow graphologists to navigate and determine the internal, cognitive fabric of the maker. To critics, they exist as mere trifles and offer nothing more than an iota of insight; doodles are not uncanny offerings from the recesses of memory, like bite-sized Rorschach tests, but simply sloppy scrawls of the bored.Ambient music theory may shed some light. Timothy Morton argues that Brian Eno designed to make music that evoked “space whose quality had become minimally significant” and “deconstruct the opposition … between figure and ground.” In fact, doodles may yield the same attributes as well. After a doodle is inserted into texts, the typography loses its primacy. There is a merging of the horizons. The text of the author can conflate with the text of the reader in an uneasy dance of meaning: the page becomes an interface revealing a landscape of signs and symbols with multiple intelligences–one manufactured and condoned, the other vernacular and unsanctioned. A fixed end or beginning between the two no longer exists. The ambient space allows potential energies to hover at the edge, ready to illustrate a tension zone and occupy the page. The blank spaces keep inviting responses. An emergent discourse is always in waiting, always threatening to overspill the text’s intended meaning. In fact, the doodles may carry more weight than the intended text: the hierarchy between authorship and readership may topple.Resistant reading may take shape during these bouts. The doodle is an invasion and signals the geography of disruption, even when innocuous. It is a leveling tool. As doodlers place it alongside official discourse, they move away from positions of passivity, being mere consumers, and claim their own autonomy and agency. The space becomes co-determinant as boundaries are blurred. The destiny of the original text’s meaning is deferred. The habitus of the reader becomes embodied in the scrawl, and the next reader must negotiate and navigate the cultural capital of this new author. As such, the doodle constitutes an alternative authority and economy of meaning within the text.Recent studies indicate doodling, often regarded as behavior that announces a person’s boredom and withdrawal, is actually a very special tool to prevent memory loss. Jackie Andrade, an expert from the School of Psychology at the University of Plymouth, maintains that doodling actually “offsets the effects of selective memory blockade,” which yields a surprising result (quoted in “Doodling Gets”). Doodlers exhibit 29% more memory recall than those who passively listen, frozen in an unequal bond with the speaker/lecturer. Students that doodle actually retain more information and are likely more productive due to their active listening. They adeptly absorb information while students who stare patiently or daydream falter.Furthermore, in a 2006 paper, Andrew Kear argues that “doodling is a way in which students, consciously or not, stake a claim of personal agency and challenge some the values inherent in the education system” (2). As a teacher concerned with the engagement of students, he asked for three classes to submit their doodles. Letting them submit any two-dimensional graphic or text made during a class (even if made from body fluid), he soon discovered examples of “acts of resistance” in “student-initiated effort[s] to carve out a sense of place within the educational institution” (6). Not simply an ennui-prone teenager or a proto-surrealist trying to render some automatic writing from the fringes of cognition, a student doodling may represent contested space both in terms of the page itself and the ambience of the environment. The doodle indicates tension, and according to Kear, reflects students reclaiming “their own self-recognized voice” (6).In a widely referenced 1966 article (known as the “doodle” article) intended to describe the paragraph organisational styles of different cultures, Robert Kaplan used five doodles to investigate a writer’s thought patterns, which are rooted in cultural values. Now considered rather problematic by some critics after being adopted by educators for teacher-training materials, Kaplan’s doodles-as-models suggest, “English speakers develop their ideas in a linear, hierarchal fashion and ‘Orientals’ in a non-liner, spiral fashion…” (Severino 45). In turn, when used as pedagogical tools, these graphics, intentionally or not, may lead an “ethnocentric, assimilationist stance” (45). In this case, doodles likely shape the discourse of English as Second Language instruction. Doodles also represent a unique kind of “finger trace,” not unlike prints from the tips of a person’s fingers and snowflakes. Such symbol systems might be used for “a means of lightweight authentication,” according to Christopher Varenhorst of MIT (1). Doodles, he posits, can be used as “passdoodles"–a means by which a program can “quickly identify users.” They are singular expressions that are quirky and hard to duplicate; thus, doodles could serve as substitute methods of verifying people who desire devices that can safeguard their privacy without users having to rely on an ever-increasing number of passwords. Doodles may represent one such key. For many years, psychologists and psychiatrists have used doodles as therapeutic tools in their treatment of children that have endured hardship, ailments, and assault. They may indicate conditions, explain various symptoms and pathologies, and reveal patterns that otherwise may go unnoticed. For instance, doodles may “reflect a specific physical illness and point to family stress, accidents, difficult sibling relationships, and trauma” (Lowe 307). Lowe reports that children who create a doodle featuring their own caricature on the far side of the page, distant from an image of parent figures on the same page, may be experiencing detachment, while the portrayal of a father figure with “jagged teeth” may indicate a menace. What may be difficult to investigate in a doctor’s office conversation or clinical overview may, in fact, be gleaned from “the evaluation of a child’s spontaneous doodle” (307). So, if children are suffering physically or psychologically and unable to express themselves in a fully conscious and articulate way, doodles may reveal their “self-concept” and how they feel about their bodies; therefore, such creative and descriptive inroads are important diagnostic tools (307). Austrian born researcher Erich Guttman and his cohort Walter MacLay both pioneered art therapy in England during the mid-twentieth century. They posited doodles might offer some insight into the condition of schizophrenics. Guttman was intrigued by both the paintings associated with the Surrealist movement and the pioneering, much-debated work of Sigmund Freud too. Although Guttman mostly studied professionally trained artists who suffered from delusions and other conditions, he also collected a variety of art from patients, including those undergoing mescaline therapy, which alters a person’s consciousness. In a stroke of luck, they were able to convince a newspaper editor at the Evening Standard to provide them over 9,000 doodles that were provided by readers for a contest, each coded with the person’s name, age, and occupation. This invaluable data let the academicians compare the work of those hospitalised with the larger population. Their results, released in 1938, contain several key declarations and remain significant contributions to the field. Subsequently, Francis Reitman recounted them in his own book Psychotic Art: Doodles “release the censor of the conscious mind,” allowing a person to “relax, which to creative people was indispensable to production.”No appropriate descriptive terminology could be agreed upon.“Doodles are not communications,” for the meaning is only apparent when analysed individually.Doodles are “self-meaningful.” (37) Doodles, the authors also established, could be divided into this taxonomy: “stereotypy, ornamental details, movements, figures, faces and animals” or those “depicting scenes, medley, and mixtures” (37). The authors also noted that practitioners from the Jungian school of psychology often used “spontaneously produced drawings” that were quite “doodle-like in nature” in their own discussions (37). As a modern folklorist, I venture that doodles offer rich potential for our discipline as well. At this stage, I am offering a series of dictums, especially in regards to doodles that are commonly found adjacent to text in books and magazines, notebooks and journals, that may be expanded upon and investigated further. Doodles allow the reader to repopulate the text with ideogram-like expressions that are highly personalised, even inscrutable, like ambient sounds.Doodles re-purpose the text. The text no longer is unidirectional. The text becomes a point of convergence between writer and reader. The doodling allows for such a conversation, bilateral flow, or “talking back” to the text.Doodles reveal a secret language–informal codes that hearken back to the “lively, spontaneous, and charged with feeling” works of child art or naïve art that Victor Sanua discusses as being replaced in a child’s later years by art that is “stilted, formal, and conforming” (62).Doodling animates blank margins, the dead space of the text adjacent to the script, making such places ripe for spontaneous, fertile, and exploratory markings.Doodling reveals a democratic, participatory ethos. No text is too sacred, no narrative too inviolable. Anything can be reworked by the intimate graffiti of the reader. The authority of the book is not fixed; readers negotiate and form a second intelligence imprinted over the top of the original text, blurring modes of power.Doodles reveal liminal moments. Since the reader in unmonitored, he or she can express thoughts that may be considered marginal or taboo by the next reader. The original subject of the book itself does not restrict the reader. Thus, within the margins of the page, a brief suspension of boundaries and borders, authority and power, occurs. The reader hides in anonymity, free to reroute the meaning of the book. Doodling may convey a reader’s infantalism. Every book can become a picture book. This art can be the route returning a reader to the ambience of childhood.Doodling may constitute Illuminated/Painted Texts in reverse, commemorating the significance of the object in hitherto unexpected forms and revealing the reader’s codex. William Blake adorned his own poems by illuminating the skin/page that held his living verse; common readers may do so too, in naïve, nomadic, and primitive forms. Doodling demarcates tension zones, yielding social-historical insights into eras while offering psychological glimpses and displaying aesthetic values of readers-cum-writers.Doodling reveals margins as inter-zones, replete with psychogeography. While the typography is sanctioned, legitimate, normalised, and official discourse (“chartered” and “manacled,” to hijack lines from William Blake), the margins are a vernacular depository, a terminus, allowing readers a sense of agency and autonomy. The doodled page becomes a visible reminder and signifier: all pages are potentially “contested” spaces. Whereas graffiti often allows a writer to hide anonymously in the light in a city besieged by multiple conflicting texts, doodles allow a reader-cum-writer’s imprint to live in the cocoon of a formerly fossilised text, waiting for the light. Upon being opened, the book, now a chimera, truly breathes. Further exploration and analysis should likely consider several issues. What truly constitutes and shapes the role of agent and reader? Is the reader an agent all the time, or only when offering resistant readings through doodles? How is a doodler’s agency mediated by the author or the format of texts in forms that I have to map? Lastly, if, as I have argued, the ambient space allows potential energies to hover at the edge, ready to illustrate a tension zone and occupy the page, what occurs in the age of digital or e-books? Will these platforms signal an age of acquiescence to manufactured products or signal era of vernacular responses, somehow hitched to html code and PDF file infiltration? Will bytes totally replace type soon in the future, shaping unforeseen actions by doodlers? Attached Figures Figure One presents the intimate graffiti of my grandfather, found in the 1907 edition of his McGuffey’s Eclectic Spelling Book. The depiction is simple, even crude, revealing a figure found on the adjacent page to Lesson 248, “Of Characters Used in Punctuation,” which lists the perfunctory functions of commas, semicolons, periods, and so forth. This doodle may offset the routine, rote, and rather humdrum memorisation of such grammatical tools. The smiling figure may embody and signify joy on an otherwise machine-made bare page, a space where my grandfather illustrated his desires (to lighten a mood, to ease dissatisfaction?). Historians Joe Austin and Michael Willard examine how youth have been historically left without legitimate spaces in which to live out their autonomy outside of adult surveillance. For instance, graffiti often found on walls and trains may reflect a sad reality: young people are pushed to appropriate “nomadic, temporary, abandoned, illegal, or otherwise unwatched spaces within the landscape” (14). Indeed, book graffiti, like the graffiti found on surfaces throughout cities, may offer youth a sense of appropriation, authorship, agency, and autonomy: they take the page of the book, commit their writing or illustration to the page, discover some freedom, and feel temporarily independent even while they are young and disempowered. Figure Two depicts the doodles of experimental filmmaker Jim Fetterley (Animal Charm productions) during his tenure as a student at the Art Institute of Chicago in the early 1990s. His two doodles flank the text of “Lady Lazarus” by Sylvia Plath, regarded by most readers as an autobiographical poem that addresses her own suicide attempts. The story of Lazarus is grounded in the Biblical story of John Lazarus of Bethany, who was resurrected from the dead. The poem also alludes to the Holocaust (“Nazi Lampshades”), the folklore surrounding cats (“And like the cat I have nine times to die”), and impending omens of death (“eye pits “ … “sour breath”). The lower doodle seems to signify a motorised tank-like machine, replete with a furnace or engine compartment on top that bellows smoke. Such ominous images, saturated with potential cartoon-like violence, may link to the World War II references in the poem. Meanwhile, the upper doodle seems to be curiously insect-like, and Fetterley’s name can be found within the illustration, just like Plath’s poem is self-reflexive and addresses her own plight. Most viewers might find the image a bit more lighthearted than the poem, a caricature of something biomorphic and surreal, but not very lethal. Again, perhaps this is a counter-message to the weight of the poem, a way to balance the mood and tone, or it may well represent the larval-like apparition that haunts the very thoughts of Plath in the poem: the impending disease of her mind, as understood by the wary reader. References Austin, Joe, and Michael Willard. “Introduction: Angels of History, Demons of Culture.” Eds. Joe Austion and Michael Willard. Generations of Youth: Youth Cultures and History in Twentieth-Century America. New York: NYU Press, 1998. “Doodling Gets Its Due: Those Tiny Artworks May Aid Memory.” World Science 2 March 2009. 15 Jan. 2009 ‹http://www.world-science.net/othernews/090302_doodle›. Dundes, Alan. “Here I Sit – A Study of American Latrinalia.” Papers of the Kroeber Anthropological Society 34: 91-105. Ensminger, David. “All Bottle Up: Reinterpreting the Culturescape of Grandma Prisbey.” Adironack Review 9.3 (Fall 2008). ‹http://adirondackreview.homestead.com/ensminger2.html›. Kear, Andrew. “Drawings in the Margins: Doodling in Class an Act of Reclamation.” Graduate Student Conference. University of Toronto, 2006. ‹http://gradstudentconference.oise.utoronto.ca/documents/185/Drawing%20in%20the%20Margins.doc›. Lowe, Sheila R. The Complete Idiot’s Guide to Handwriting Analysis. New York: Alpha Books, 1999. Morton, Timothy. “‘Twinkle, Twinkle Little Star’ as an Ambient Poem; a Study of Dialectical Image; with Some Remarks on Coleridge and Wordsworth.” Romantic Circles Praxis Series (2001). 6 Jan. 2009 ‹http://www.rc.umd.edu/praxis/ecology/morton/morton.html›. Potter, Russell A. Spectacular Vernaculars: Hip Hop and the Politics of Postmodernism. Albany: State University of New York, 1995. Read, Allen Walker. Classic American Graffiti: Lexical Evidence from Folk Epigraphy in Western North America. Waukesha, Wisconsin: Maledicta Press, 1997. Reitman, Francis. Psychotic Art. London: Routledge, 1999. Sanua, Victor. “The World of Mystery and Wonder of the Schizophrenic Patient.” International Journal of Social Psychiatry 8 (1961): 62-65. Severino, Carol. “The ‘Doodles’ in Context: Qualifying Claims about Contrastive Rhetoric.” The Writing Center Journal 14.1 (Fall 1993): 44-62. Van Cleave, Claire. Master Drawings of the Italian Rennaissance. Cambridge, Mass.: Harvard UP, 2007. Varenhost, Christopher. Passdoodles: A Lightweight Authentication Method. Research Science Institute. Cambridge, Mass.: Massachusetts Institute of Technology, 2004.