scholarly journals Appendicular skeleton of Protoceratops andrewsi (Dinosauria, Ornithischia): comparative morphology, ontogenetic changes, and the implications for non-ceratopsid ceratopsian locomotion

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7324 ◽  
Author(s):  
Justyna Słowiak ◽  
Victor S. Tereshchenko ◽  
Łucja Fostowicz-Frelik
Keyword(s):  
Upper Cretaceous ◽  
Comparative Morphology ◽  
Morphological Characters ◽  
Appendicular Skeleton ◽  
Postural Change ◽  
Ontogenetic Changes ◽  
Locomotor Adaptations ◽  
Ceratopsian Dinosaurs ◽  
Insight Into ◽  
Shed Light

Protoceratops andrewsi is a well-known ceratopsian dinosaur from the Djadokhta Formation (Upper Cretaceous, Mongolia). Since the 1920s, numerous skeletons of different ontogenetic stages from hatchlings to adults, including fully articulated specimens, have been discovered, but the postcranial anatomy of Protoceratops has not been studied in detail. A new, mostly articulated subadult individual provides an excellent opportunity for us to comprehensively describe the anatomy of the limb skeleton, to compare to other ceratopsian dinosaurs, and to study the ontogenetic and intraspecific variation in this species. New data provided by the specimen shed light on the lifestyle of P. andrewsi. The young subadult individuals present an array of morphological characters intermediate between the bipedal Psittacosaurus and fully quadrupedal adult P. andrewsi. We compare these observations with a broad range of non-ceratopsid Neoceratopsia (of various locomotor adaptations) and Psittacosauridae (obligate bipeds), which gives us insight into the evolution of the skeletal characters informative for the postural change in ceratopsian dinosaurs.

scholarly journals The morphology and biology of Gonatus tinro and Gonatopsis okutanii (Teuthida: Gonatidae) indicate that they are conspecific

2010 ◽  
Vol 67 (7) ◽  
pp. 1464-1477 ◽  
Author(s):  
Oleg N. Katugin ◽  
Gennadyi A. Shevtsov ◽  
Mikhail A. Zuev
Keyword(s):  
Seasonal Changes ◽  
Sea Of Okhotsk ◽  
Adult Stage ◽  
Comparative Morphology ◽  
Morphological Characters ◽  
Northwest Pacific ◽  
Ontogenetic Changes ◽  
Northwest Pacific Ocean ◽  
Wide Range ◽  
Young Stage

Abstract Katugin, O. N., Shevtsov, G. A., and Zuev, M. A. 2010. The morphology and biology of Gonatus tinro and Gonatopsis okutanii (Teuthida: Gonatidae) indicate that they are conspecific. – ICES Journal of Marine Science, 67: 1464–1477. Distribution, size and maturity patterns, and ontogenetic changes in morphological characters of the squid species Gonatus tinro and Gonatopsis okutanii were examined. The database includes information collected during research surveys to the Sea of Okhotsk and the adjacent Northwest Pacific Ocean from 1972 through 2005. Both species are distributed within the same areas beyond the shelf: G. tinro within a wide range of depths and an active vertical migrant, G. okutanii mostly demersal, characteristic of many adult gonatids. Seasonal changes in size and maturity of G. tinro and G. okutanii are congruent in many respects: G. tinro are usually small and young with hookless tentacle clubs, and squid identified as G. okutanii tend to be larger adults with truncated tentacles. The comparative morphology of the two species and the discovery of individuals bearing external features of both indicate that G. okutanii is an adult stage and G. tinro a young stage of the same species. It is concluded that G. okutanii is a junior synonym of G. tinro, which becomes the valid name by precedence.

Sentence-Based Experience Logging in New Hearing Aid Users

2020 ◽  
Vol 29 (3S) ◽  
pp. 631-637
Author(s):  
Katja Lund ◽  
Rodrigo Ordoñez ◽  
Jens Bo Nielsen ◽  
Dorte Hammershøi
Keyword(s):  
Hearing Aid ◽  
Patient Experiences ◽  
Online Tool ◽  
Rehabilitation Process ◽  
Hearing Rehabilitation ◽  
Clinical Observations ◽  
Hearing Aid Use ◽  
Wide Range ◽  
Insight Into ◽  
Shed Light

Purpose The aim of this study was to develop a tool to gain insight into the daily experiences of new hearing aid users and to shed light on aspects of aided performance that may not be unveiled through standard questionnaires. Method The tool is developed based on clinical observations, patient experiences, expert involvement, and existing validated hearing rehabilitation questionnaires. Results An online tool for collecting data related to hearing aid use was developed. The tool is based on 453 prefabricated sentences representing experiences within 13 categories related to hearing aid use. Conclusions The tool has the potential to reflect a wide range of individual experiences with hearing aid use, including auditory and nonauditory aspects. These experiences may hold important knowledge for both the patient and the professional in the hearing rehabilitation process.

Aleksey Peshkov as an editor of Samarskaya Gazeta

2020 ◽  
pp. 128-138
Author(s):  
A. S. Bik-Bulatov
Keyword(s):  
Local History ◽  
Organizational Skills ◽  
First Time ◽  
New Evidence ◽  
Insight Into ◽  
Shed Light

The article uses little known letters of M. Gorky, many of which were published for the first time in 1997, as well as findings of Samara-based experts in local history to shed light on the writer’s work as editor-in-chief of the Samarskaya Gazeta newspaper in 1895. The researcher introduces hitherto unstudied reminiscences of the journalist D. Linyov (Dalin) about this period, which reference a letter by Gorky, now lost. The paper details a newly discovered episode of Gorky’s professional biography as a journalist: it concerns his campaign against a Samara ‘she-wolf,’ the madam of a local brothel A. Neucheva. Linyov’s reminiscences turn out to be an important and interesting source, offering an insight into the daily grind of the young editor Gorky, providing new evidence of his excellent organizational skills, and describing his moral and social stance. The author presents his work in the context of a recently initiated broader discussion about the need to map out all Russian periodicals for the period until 1917, as well as all research devoted to individual publications.

scholarly journals Revisiting an Aspergillus flavus Strain Isolated from an Egyptian Sugarcane Field in 1930

2020 ◽  
Vol 8 (11) ◽  
pp. 1633
Author(s):  
Mohamed F. Abdallah ◽  
Kris Audenaert ◽  
Sarah De Saeger ◽  
Jos Houbraken
Keyword(s):  
Aspergillus Flavus ◽  
Short Communication ◽  
Aflatoxin Contamination ◽  
Type B ◽  
Prevention Strategies ◽  
Sugarcane Field ◽  
Host Pathogen Interaction ◽  
Sugarcane Crop ◽  
Insight Into ◽  
Shed Light

The aflatoxin type B and G producer Aspergillus novoparasiticus was described in 2012 and was firstly reported from sputum, hospital air (Brazil), and soil (Colombia). Later, several survey studies reported the occurrence of this species in different foods and other agricultural commodities from several countries worldwide. This short communication reports on an old fungal strain (CBS 108.30), isolated from Pseudococcus sacchari (grey sugarcane mealybug) from an Egyptian sugarcane field in (or before) 1930. This strain was initially identified as Aspergillus flavus; however, using the latest taxonomy schemes, the strain is, in fact, A. novoparasiticus. These data and previous reports indicate that A. novoparasiticus is strongly associated with sugarcane, and pre-harvest biocontrol approaches with non-toxigenic A. novoparasiticus strains are likely to be more successful than those using non-toxigenic A. flavus strains. Further studies on the association between A. novoparasiticus and Pseudococcus sacchari might shed light on the distribution (and aflatoxin contamination) of this species in sugarcane. Additionally, the interaction between A. novoparasiticus, Pseudococcus sacchari, and sugarcane crop under different scenarios of climate change will be critical in order to get more insight into the host–pathogen interaction and host resistance and propose appropriate prevention strategies to decrease mycotoxin contamination and crop loss due to A. novoparasiticus attack.

Posthumous baggage. Harper Lee’s letters

2021 ◽  
pp. 194-214
Author(s):  
D. V. Zakharov
Keyword(s):  
Personal Life ◽  
Private Correspondence ◽  
To Kill A Mockingbird ◽  
Detailed List ◽  
Harper Lee ◽  
Insight Into ◽  
Shed Light

The article is devoted to the epistolary legacy of Nelle Harper Lee, the author of the American cult classic To Kill a Mockingbird (1960). The researcher examines a collection of Nelle’s letters written from 1956 to 2009, provides a detailed list of sources and makes suggestions about the potential new discoveries that could shed light on the life of ‘America’s most reclusive author.’ This short study of ‘posthumous baggage,’ as Lee referred to her private correspondence, offers an insight into the interests of the author, who insisted on keeping her personal life to herself. The letters included in the study concern the writer’s relationship to her father Amasa Coleman Lee, on whom she based the character of Atticus Finch, her attitude to her own biography published by Charles Shields, and personal anxieties of her final years. The author also details Lee’s opinions of literature, from the 19th-c. classics to contemporary authors, and shows how much she valued communication with her numerous fans.

Black-white mixed race young people in Ireland and their lived experiences of racialised exclusion

2021 ◽  
pp. 079160352110684
Author(s):  
Patti O’Malley
Keyword(s):  
Young People ◽  
Mixed Race ◽  
Regular Feature ◽  
Black African ◽  
Academic Scholarship ◽  
Irish Context ◽  
Irish Identity ◽  
Depth Interviews ◽  
Insight Into ◽  
Shed Light

The multiracial family and the existence of mixed race children have come to be a regular feature of Irish familial life. Yet, nation-building discourses have promulgated notions of ethnic and religious homogeneity with Irish identity being racialised exclusively as white. Moreover, to date, there has been a dearth of academic scholarship related to racial mixedness in the Irish context. Through in-depth interviews, this paper sets out, therefore, to provide empirical insight into the lives of fifteen black (African) – white (Irish) mixed race young people (aged 4 to 18) with a particular focus on their experiences of racialised exclusion. Indeed, findings suggest that, as in other majority white national contexts, the black-white mixed race young people are racialised as black in the Irish public domain and as such, are positioned as ‘racialised outsiders’. In fact, their narrative accounts shed light on everyday encounters saturated by ‘us-them’ racial constructs based on phenotype. Thus, these young people, who are not fully recognised as mixed race Irish citizens, are effectively deprived of a space in which to articulate their belonging within the existing statist (i.e. inside/outside) framework.

The systematics of Raspailiidae (Demospongiae: Poecilosclerida: Microcionina) re-analysed with a ribosomal marker

2007 ◽  
Vol 87 (6) ◽  
pp. 1571-1576 ◽  
Author(s):  
Dirk Erpenbeck ◽  
Sue List-Armitage ◽  
Belinda Alvarez ◽  
Bernard M. Degnan ◽  
Gert Wörheide ◽  
...  
Keyword(s):  
Gene Tree ◽  
Morphological Characters ◽  
Character Evolution ◽  
28S Rdna ◽  
The Other ◽  
Data Set ◽  
Rdna Gene ◽  
Insight Into

We present a 28S rDNA gene tree of selected Raspailiidae, Axinellidae and other demosponges to obtain insight into raspailiid phylogeny and character evolution. The Raspailiidae in our data set cluster in a well-supported clade, distinguished from Axinellidae, Agelasida and Hadromerida. Raspailia (s.s.), Eurypon, Sollasella, Aulospongus and Ectyoplasia form a Raspailiidae clade. Some Raspailia subgenera, in particular R. (Parasyringella), are not retrieved monophyletically. Trikentrion falls into the Thrinacophorinae, and not the Cyamoninae as earlier hypothesized. The axinellid genera Ptilocaulis and Reniochalina also cluster with Raspailiidae, distant from the other Axinellidae. The suitability of particular morphological characters for raspailiid phylogeny is discussed.

scholarly journals The Communication of Ideas across Subfields in Political Science

2014 ◽  
Vol 47 (02) ◽  
pp. 468-476 ◽  
Author(s):  
Erin R. Graham ◽  
Charles R. Shipan ◽  
Craig Volden
Keyword(s):  
Network Analysis ◽  
International Relations ◽  
Political Science ◽  
Comparative Politics ◽  
Diffusion Processes ◽  
Methodological Approach ◽  
Journal Articles ◽  
Insight Into ◽  
Shed Light ◽  
Levels Of Integration

ABSTRACTWhat factors inhibit or facilitate cross-subfield conversations in political science? This article draws on diffusion scholarship to gain insight into cross-subfield communication. Diffusion scholarship represents a case where such communication might be expected, given that similar diffusion processes are analyzed in American politics, comparative politics, and international relations. We identify nearly 800 journal articles published on diffusion within political science between 1958 and 2008. Using network analysis we investigate the degree to which three “common culprits”—terminology, methodological approach, and journal type—influence levels of integration. We find the highest levels of integration among scholars using similar terms to describe diffusion processes, sharing a methodological approach (especially in quantitative scholarship), and publishing in a common set of subfield journals. These findings shed light on when cross-subfield communication is likely to occur with ease and when barriers may prove prohibitive.

scholarly journals The Value of Abstraction

2019 ◽  
Author(s):  
Mark K Ho ◽  
David Abel ◽  
Tom Griffiths ◽  
Michael L. Littman
Keyword(s):  
Problem Solving ◽  
Relevant Information ◽  
Scaling Up ◽  
Limited Resources ◽  
Abstract Representations ◽  
Learning Research ◽  
Crucial Ingredient ◽  
Insight Into ◽  
Shed Light

Agents that can make better use of computation, experience, time, and memory can solve a greater range of problems more effectively. A crucial ingredient for managing such finite resources is intelligently chosen abstract representations. But, how do abstractions facilitate problem solving under limited resources? What makes an abstraction useful? To answer such questions, we review several trends in recent reinforcement-learning research that provide insight into how abstractions interact with learning and decision making. During learning, abstraction can guide exploration and generalization as well as facilitate efficient tradeoffs---e.g., time spent learning versus the quality of a solution. During computation, good abstractions provide simplified models for computation while also preserving relevant information about decision-theoretic quantities. These features of abstraction are not only key for scaling up artificial problem solving, but can also shed light on what pressures shape the use of abstract representations in humans and other organisms.

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