61 research outputs found
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The utilization of birds at neolithic WF16, southern Jordan: cut marks, body parts, and experimental skinning
WF16 is an early Neolithic settlement in southern Jordan with a large bird bone assemblage (Number of Identified Specimens [NISP] = 7808), representing 18 families. We explore how the birds were utilized by considering cut marks and body part representation for each of the families represented, also drawing on the experimental
skinning of buzzards, the most common bird in the assemblage. We conclude that the bird bones accumulated from a mix of activities including the exploitation of a
seasonally abundant supply of migratory birds for food; the acquisition of skins, feathers and talons for decorative, symbolic and practical purposes; and the trapping of wildfowl and gamebirds as a supplementary food source to large mammals
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Birds as indicators of Early Holocene biodiversity and the seasonal nature of human activity at WF16, an early Neolithic site in Faynan, Southern Jordan
Birds are useful indicators of biodiversity. Their bones have been used for reconstructing the local environments and seasonality of human activity at Epipalaeolithic and early Neolithic sites in SW Asia. We consider the bird bones from WF16, an early Neolithic settlement in southern Jordan, currently located in an arid environment. The settlement has elaborate pisé-built architecture and material culture. The species represented within the WF16 avian assemblage suggest the environment was considerably wetter and more wooded than today, supporting the idea that Early Holocene communities targeted locations with abundant and diverse resources. However, while the range of species at WF16 is equivalent to that found at other Epipalaeolithic and early Neolithic sites in the region, the diversity of the assemblage is strikingly limited, with a heavy dominance of raptors, notably buzzards. We suggest an annual pattern of seasonally based activities, with a relatively small resident population drawing on supplies of water during winter months for constructing and maintaining site architecture and spring/autumn gatherings of people from across the region for hunting migratory raptors and undertaking performance and ceremony within settlement
Capabilities of GPT-4 in ophthalmology: an analysis of model entropy and progress towards human-level medical question answering
Background: Evidence on the performance of Generative Pre-trained Transformer 4 (GPT-4), a large language model (LLM), in the ophthalmology question-answering domain is needed.
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Methods: We tested GPT-4 on two 260-question multiple choice question sets from the Basic and Clinical Science Course (BCSC) Self-Assessment Program and the OphthoQuestions question banks. We compared the accuracy of GPT-4 models with varying temperatures (creativity setting) and evaluated their responses in a subset of questions. We also compared the best-performing GPT-4 model to GPT-3.5 and to historical human performance.
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Results: GPT-4–0.3 (GPT-4 with a temperature of 0.3) achieved the highest accuracy among GPT-4 models, with 75.8% on the BCSC set and 70.0% on the OphthoQuestions set. The combined accuracy was 72.9%, which represents an 18.3% raw improvement in accuracy compared with GPT-3.5 (p<0.001). Human graders preferred responses from models with a temperature higher than 0 (more creative). Exam section, question difficulty and cognitive level were all predictive of GPT-4-0.3 answer accuracy. GPT-4-0.3’s performance was numerically superior to human performance on the BCSC (75.8% vs 73.3%) and OphthoQuestions (70.0% vs 63.0%), but the difference was not statistically significant (p=0.55 and p=0.09).
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Conclusion: GPT-4, an LLM trained on non-ophthalmology-specific data, performs significantly better than its predecessor on simulated ophthalmology board-style exams. Remarkably, its performance tended to be superior to historical human performance, but that difference was not statistically significant in our study
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The bird remains from wf16, an early neolithic settlement in southern Jordan: assemblage composition, chronology and spatial distribution
Excavations at the early Neolithic settlement of WF16 in Faynan, southern Jordan, 11.84-10.24 ka BP, recovered 17,700 bird bones, of which 7808 could be identified to at least family level. Sixty-three different bird taxa are present from 18 families, representing a mix of resident and migrant birds, based on present-day ecology. We describe the settlement context for the assemblage, its taxonomic composition, spatial and chronological distribution, identifying its similarities and differences to avian assemblages from broadly contemporary sites in the region
Ecosytem services: A rapid assessment method tested at 35 sites of the LTER-Europe Network
The identification of parameters to monitor the ecosystem services delivered at a site is fundamental to the concept’s adoption as a useful policy instrument at local, national and international scales. In this paper we (i) describe the process of developing a rapid comprehensive ecosystem service assessment methodology and (ii) test the applicability of the protocol at 35 long-term research (LTER) sites across 14 countries in the LTER-Europe network (www.lter-europe.net) including marine, urban, agricultural, forest, desert and conservation sites. An assessment of probability of occurrence with estimated confidence score using 83 ecosystem service parameters was tested. The parameters were either specific services like food production or proxies such as human activities which were considered surrogates for cultural diversity and economic activity. This initial test of the ecosystem service parameter list revealed that the parameters tested were relatively easy to score by site managers with a high level of certainty (92% scored as either occurring or not occurring at the site with certainty of over 90%). Based on this assessment, we concluded that (i) this approach to operationalise the concept of ecosystem services is practical and applicable by many sectors of civil society as a first screen of the ecosystem services present at a site, (ii) this study has direct relevance to land management and policy decision makers as a transparent vehicle to focus testing scenarios and target data gathering, but (iii) further work beyond the scale investigated here is required to ensure global applicability
The ground beetle tribe platynini bonelli, 1810 (Coleoptera, carabidae) in the southern levant: dichotomous and interactive identification tools, ecological traits, and distribution
The carabids of the tribe Platynini from the southern Levant (Egypt: Sinai Peninsula, Israel, Jordan) and adjacent regions of Egypt, Lebanon, Syria, Iraq, and Saudi Arabia are reviewed in terms of species tax-onomy, ecological, distributional traits, and conservation biology. In addition to a classical dichotomous identification key to the 14 species of the region, identification tools are made freely available via the Xper3 knowledge database “Platynini, southern Levant”. Besides an interactive identification key, a matrix with character states for the species and single access identification keys are available. A database includ-ing all available records from the southern Levant is also provided. First faunistic records are recorded for Anchomenus dorsalis infuscatus from Sinai (Egypt), Olisthopus fuscatus from Lebanon and Iraq, and for O. glabricollis from Iraq. Threatened species are discussed, also with regard to the reasons of their decline. The majority of species lives in wetlands, especially on the shore of winter ponds and streams, which have been extremely degraded in the last decades
Transboundary determinants of avian zoonotic infectious diseases: challenges for strengthening research capacity and connecting surveillance networks
As the climate changes, global systems have become increasingly unstable and unpredictable. This is particularly true for many disease systems, including subtypes of highly pathogenic avian influenzas (HPAIs) that are circulating the world. Ecological patterns once thought stable are changing, bringing new populations and organisms into contact with one another. Wild birds continue to be hosts and reservoirs for numerous zoonotic pathogens, and strains of HPAI and other pathogens have been introduced into new regions via migrating birds and transboundary trade of wild birds. With these expanding environmental changes, it is even more crucial that regions or counties that previously did not have surveillance programs develop the appropriate skills to sample wild birds and add to the understanding of pathogens in migratory and breeding birds through research. For example, little is known about wild bird infectious diseases and migration along the Mediterranean and Black Sea Flyway (MBSF), which connects Europe, Asia, and Africa. Focusing on avian influenza and the microbiome in migratory wild birds along the MBSF, this project seeks to understand the determinants of transboundary disease propagation and coinfection in regions that are connected by this flyway. Through the creation of a threat reduction network for avian diseases (Avian Zoonotic Disease Network, AZDN) in three countries along the MBSF (Georgia, Ukraine, and Jordan), this project is strengthening capacities for disease diagnostics; microbiomes; ecoimmunology; field biosafety; proper wildlife capture and handling; experimental design; statistical analysis; and vector sampling and biology. Here, we cover what is required to build a wild bird infectious disease research and surveillance program, which includes learning skills in proper bird capture and handling; biosafety and biosecurity; permits; next generation sequencing; leading-edge bioinformatics and statistical analyses; and vector and environmental sampling. Creating connected networks for avian influenzas and other pathogen surveillance will increase coordination and strengthen biosurveillance globally in wild birds
Diagnosis of paenibacillus larvae from honeybees in Jordan according to microbiological and chemicals techniques
American Foulbrood Disease (AFB) is considered one of the most virulent bacterial diseases of honeybee (Apis mellifera); it has a vital negative impact on the beekeeping industry worldwide. This work includes the subsequent diagnosis including; chemical, microbiological procedure for detection of Paenibacillus larvae. During the spring and the summer of 2009, fifty-six honey and larval samples were collected from 56 inspected honeybees colonies located in 53 apiaries representing beekeeping all over Jordan. The samples were examined to assess the presence of Paenibacillus larvae in honey samples by using both chemical and microbiological methods. Honey bees field diagnosis procedures were considered to be the first diagnosis step for AFB, which can be done by the beekeepers themselves. The total of 57 (honey brood and brood nest honey) from different regions of Jordan was inspected to carry P. larvae spores with 35%. The percent referred to the ability of Jordanian beekeepers to ascertained AFB symptoms. American foulbrood exists in Jordan with different distribution depending on the environmental condition. This pathology can be best detected by isolation of Paenibacillus larvae from Brood-nest honey sample
Upper Limb Deep Vein Thrombosis in Patient with Hemophilia A and Heterozygosity for Prothrombin G20210A: A Case Report and Review of the Literature
Deep vein thrombosis (DVT) is a rare disease in patients with hemophilia A. We report a case of 22-year-old male with severe hemophilia A who presented to the emergency room with 5-day history of right arm pain that was attributed initially to bleeding event. In the absence of external signs of bleeding or hematoma and normal hemoglobin level, we suspected an underlying DVT. Doppler ultrasonography of the right upper limb revealed thrombosis of the subclavian vein and this was confirmed by CT venography. The d-dimer level was normal and investigations for prothrombotic state revealed heterozygosity for prothrombin G20210A mutation. Treatment with factor VIII and low molecular weight heparin led to successful resolution and marked improvement of his clinical condition
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