1,340 research outputs found
XS-VID: An Extremely Small Video Object Detection Dataset
Full text linkSmall Video Object Detection (SVOD) is a crucial subfield in modern computer vision, essential for early object discovery and detection. However, existing SVOD datasets are scarce and suffer from issues such as insufficiently small objects, limited object categories, and lack of scene diversity, leading to unitary application scenarios for corresponding methods. To address this gap, we develop the XS-VID dataset, which comprises aerial data from various periods and scenes, and annotates eight major object categories. To further evaluate existing methods for detecting extremely small objects, XS-VID extensively collects three types of objects with smaller pixel areas: extremely small (\textit{es}, ), relatively small (\textit{rs}, ), and generally small (\textit{gs}, ). XS-VID offers unprecedented breadth and depth in covering and quantifying minuscule objects, significantly enriching the scene and object diversity in the dataset. Extensive validations on XS-VID and the publicly available VisDrone2019VID dataset show that existing methods struggle with small object detection and significantly underperform compared to general object detectors. Leveraging the strengths of previous methods and addressing their weaknesses, we propose YOLOFT, which enhances local feature associations and integrates temporal motion features, significantly improving the accuracy and stability of SVOD. Our datasets and benchmarks are available at \url{https://gjhhust.github.io/XS-VID/}
Study of High Momentum η′ Production in B→η′Xs
Full text linkWe measure the branching fraction for the charmless semi-inclusive process B→η′Xs, where the η′ meson has a momentum in the range 2.0 to 2.7 GeV/c in the Υ(4S) center-of-mass frame and Xs represents a system comprising a kaon and zero to four pions. We find B(B→η′Xs)=[3.9±0.8(stat)±0.5(syst)±0.8(model)]×10-4. We also obtain the Xs mass spectrum and find that it fits models predicting high masses
ZnxCd1-xS/g-C3N4 nanocomposites: synthesis, characterization, and photocatalytic activity
Full text linkIn this work, we prepared ZnxCd1-xS/g-C3N4 nanocomposites with excellent catalytic effect by the simple chemical precipitation method. The ZnxCd1-xS/g-C3N4 composite with excellent effect of degrading methylene blue (MB) was prepared by adjusting the ratio of Zn to Cd. The Zn0.25Cd0.75S/g-C3N4 nanocomposites have the highest degradation efficiency, which can reach 92.25%. The specific surface area and visible light absorption range are increased by the synergistic effect of the combination of ZnxCd1-xS and g-C3N4. The ZnxCd1-xS/g-C3N4 nanocomposites prepared by this study with excellent photocatalytic properties provide a method for the preparation of new composite materials in the future.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
The etiology of esophageal cancer in high- and low- risk areas of Jiangsu province, China
No full text [Background]Esophageal cancer (EC) remains one of the most common and fatal malignancies worldwide. The geographic variation in EC occurrence is striking, and China is an area with one of the highest incidences of EC. A number of epidemiological studies have been conducted toward EC in the past decades, results suggested that tobacco smoking, alcohol drinking, unhealthy dietary factors and chronic injuries of the esophageal mucosa are important in the development of this disease. Genetic polymorphisms in enzymes involved in metabolism of carcinogens may also influence individual susceptibility. However, the effects of major lifestyle and hereditary risk factors on the development of EC remain poorly understood in China. Moreover, little attention has been paid to the etiological heterogeneity between similar areas with great risk gradient. [Methods]From 2003 to 2007, a large population-based case-control study of EC has been conducted in a selected high-risk area and a selected low-risk area of Jiangsu Province, one of the highest cancer incidence areas in China. In total, 1,520 cases and 3,879 controls were recruited. In this thesis, we evaluated the role of major lifestyle factors such as tobacco smoking, alcohol drinking and dietary factors, as well as inherited determinants including family history of cancer and genetic polymorphisms of alcohol-metabolizing related genes on the risk of EC. In addition, we investigated how much of the risk gradient between two areas could be explained by variation in the distributions of major risk factors. [Results] Tobacco smoking and alcohol drinking moderately increased the risk of EC, while the positive associations were only found among men but not among women. Dietary factors were observed to play important roles in the development of EC. Specific dietary habits i.e., fast eating speed, and hot eating and/or drinking substantially elevated EC risk and could explain more than 20% of EC cases each. High intake of salty foods and fried foods, low consumption of raw garlic were also observed to increase the risk of EC. In addition to environmental and lifestyle factors, we confirmed that a positive family history can significantly increase EC risk, and found the inheritance may modify the effect of some unhealthy lifestyles. Moreover, we further explored the relationship between EC and single nucleotide polymorphismsof ADH1B, ADH1C and ALDH2 genes. Results showed that the slow metabolizing ADH1B G allele, ADH1C G allele and ALDH2 A allele significantly increased EC risk among moderate-to-heavy alcohol drinkers, and a significant interaction was observed between ALDH2 gene and alcohol consumption. Lastly, we found that more than 60% of EC cases could be attributable to major lifestyle risk factors in the study population; furthermore, dissimilar distribution of several lifestyle factors, together with variations of hereditary factors may be largely responsible for the incidence difference between two study areas. [Conclusion]The findings in this thesis confirm that unhealthy lifestyles including smoking, alcohol drinking and some dietary factors are the predominant risk factors of EC in China, and a large proportion of incidence difference between regions at varying risk could be attributed to the different prevalence of lifestyle factors. As most of the identified risk factors are modifiable, these could be translated into risk reduction prevention programs in China, and a substantial proportion of new EC cases are expected to be prevented by eliminating or avoiding these risk factors in the population. </p
THE QUESTION OF THE CITIZENRYS AWARENESS OF THE CONSTITUTION
No full textLawPolitical ScienceSSCI0ARTICLE250-582
First-principles calculations of structural, electronic and optical properties of CdxZn1-xS alloys
No full textStructural, electronic and optical properties of ternary alloy system CdxZn1-xS have been studied using first-principles approach based on density functional theory. Electronic structure, density of states and energy band gap values for CdxZn1-xS are estimated in the range 0 ≤ x ≤ 1 using both the standard local density approximation (LDA) as well as the generalized gradient approximations (GGA) of Wu-Cohen (WC) for the exchange-correlation potential. It is observed that the direct band gap EgΓ-Γ of CdxZn1-xS decreases nonlinearly with the compositional parameter x, as observed experimentally. It is also found that Cd s and d, S p and Zn d states play a major role in determining the electronic properties of this alloy system. Furthermore, results for complex dielectric constant ε(ω), refractive index n(ω), normal-incidence reflectivity R(ω), absorption coefficient α(ω) and optical conductivity σ(ω) are also described in a wide range of the incident photon energy and compared with the existing experimental data. © 2010 Elsevier B.V. All rights reserved
Vanadium-Doped Bi2S3@Co1−xS Heterojunction Nanofibers as High-Capacity and Long-Cycle-Life Anodes
No full textLithium-ion batteries (LIBs) are considered one of the most important solutions for energy storage; however, conventional graphite anodes possess limited specific capacity and rate capability. Bismuth sulfide (Bi2S3) and cobalt sulfide (Co1−xS) with higher theoretical capacities have emerged as promising alternatives, but they face challenges such as significant volume expansion during electrochemical cycling and poor electrical conductivity. To tackle these problems, vanadium was doped into Bi2S3 to improve its electronic conductivity; subsequently, a vanadium-doped Bi2S3 (V-Bi2S3)@Co1−xS heterojunction structure was synthesized via a facile hydrothermal method to mitigate volume expansion by the closely bonded heterojunction interface. Moreover, the built-in electric field (BEF) created at the heterointerfaces can significantly enhance charge transport and facilitate reaction kinetics. Additionally, the nanofiber morphology of the V-Bi2S3@Co1−xS heterojunction structure further contributed to improved electrochemical performance. As a result, the V-Bi2S3 electrode exhibited better electrochemical performance than the pure Bi2S3 electrode, and the V-Bi2S3@Co1−xS electrode showed a significantly enhanced performance compared to the V-Bi2S3 electrode. The V-Bi2S3@Co1−xS heterojunction electrode displayed a high capacity of 412.5 mAh g−1 after 2000 cycles at 1.0 A g−1 with high coulombic efficiencies of ~100%, indicating a remarkable long-term cycling stability
Pendidikan agama Khonghucu dan budi pekerti: buku siswa SD Kelas V
Full text linkDalam buku ini terdapat beberapa tokoh dan dikemas dalam bentuk tanya jawab yang bertujuan menggali keingimntahuan peserta didik melalui proses mengamati, penanya,mengeksplorasi, mengasosiasikan, dan engkomunikasikan materi sesuai kemampuan peserta didik yang mengacu pada Kurikulum 2013. Tokoh utama bernama Wu Zhenhui adalah anak berusia 11 tahun, peserta didik kelas V Sekolah Dasar. Wu Zhenhui didampingi oleh beberapa teman dan guru serta keluarganya yang akan menemani peserta didik memasuki proses belajar yang menyenangkan. Harapan kami, peserta didik dapat meniru keteladanan Wu Zhenhui dalam berperilaku yang terlihat dari cara berbicara, bersikap, dan bertindak sebagai seorang Junzi atau susilawan yang merupakan sosok ideal dalam agama Khonghucu. Buku ini memiliki beberapa fitur yang memudahkan peserta didik dalam memahami
materi secara bertahap.Fitur AKU INGIN TAHU! berisi pertanyaan dan dialog antara Zhenhui dan tokoh lain yang akan mengantar peserta didik memasuki materi inti.
Fitur AKU BISA! berisi kegiatan yang bervariasi untuk memantapkan peserta didik memahami materi. Fitur 汉 語 berisi cara menulis Hanzi yang berkaitan dengan
materi. Fitur DOREMI berisi lagu rohani yang mengasah kemampuan seni peserta didik. Fitur KINI KUTAHU… berisi rangkuman materi dalam bentuk bagan atau peta pikiran
untuk membantu peserta didik mengingat intisari materi. Fitur IBADAH berisi jadwal dan makna ibadah yang akan berlangsung sesuai dengan penanggalan Kongzili.
Buku ini dilengkapi pula dengan Buku Panduan Guru supaya para pendidik dapat menyampaikan materi dengan tepat secara konsep dan sebagai acuan dalam penyusunan program belajar yang terintegrasi dengan kalender pendidikan nasional
CoaguChek XS INR-vierilaitteen käyttö Ranuan terveyskeskuksessa : Vierilaitteen ja DiaMed-CD4-analysaattorin tulostasovertailu
Full text linkINR-vieritestaus on lisääntynyt viime vuosina erityisesti liikuntarajoitteisten kotisairaanhoidon asiakkaiden ryhmässä. Myös Ranuan terveyskeskus on hankkinut terveyskeskuksen ja kotisairaanhoidon käyttöön CoaguChek XS INR-vierilaitteita. Vieritestauksen lisääntyminen asettaa haasteita vierianalytiikan osaamisen kehittämiselle, kuten perehdytyksen järjestämiselle ja tulosten luotettavuuden arvioinnille.
Tämän opinnäytetyön tarkoituksena oli tutkia CoaguChek XS INR-vierilaitteen ja laboratorion käytössä olevan DiaMed-CD4 analysaattorin mahdollisia tulostasoeroja. Vertailu suoritettiin keräämällä vertailunäytemateriaaliksi ihopistosnäytteet ja laskimoverinäytteet kolmeltakymmeneltä Ranuan terveyskeskuksen laboratoriossa asioineelta varfariinihoidon piirissä olevalta asiakkaalta. Analyysimenetelmien välillä havaittiin selvä korrelaatio (r=0.97). 24 näytteessä, eli valtaosassa mitatuista, mittausmenetelmien välinen tulostasoero oli alle 10 %. Kuuden näytteen osalta poikkeama oli 10–20 %. INR-yksiköissä mitattuna suurin yksittäinen poikkeama menetelmien välillä oli 0.4 INR-yksikköä.
Vaikkakin tässä tutkimuksessa mittausmenetelmien välillä oli selvä korrelaatio ja tulosten vertailussa poikkeama vastasi suurelta osin sille asetettuja laatukriteerejä, on perehdytyksen ja yhtenäisten ohjeiden laatimiseen syytä kiinnittää huomiota potilasturvallisuuden edistämiseksi. Luotettava ja onnistunut vieritutkimus edellyttää sen kaikkien vaiheiden ymmärtämistä.Oulu University of Applied Sciences
Degree Programme in Biomedical Laboratory Science
Author: Panu Kajova
Title of thesis: Using CoaguChek® XS Point-Of-Care Testing in Ranua Health Center: Evaluation of Result Differences Between CoaguChek XS Monitor and DiaMed-CD4 Analyzer
Supervisors: Outi Mäkitalo and Paula Reponen
Term and year when the thesis was submitted: Spring 2013
Number of pages: 23 + 2 appendix pages
BACKGROUND: Point-Of-Care Testing (POCT) is a growing field in health care. During the past few years the use of Point-Of-Care Testing in monitoring oral anticoagulant therapy (OAT) has been growing in Finland, especially in the district nursing field. Transition out from a laboratory environment places challenges for the orientation and quality control of results.
AIM: Aim of this study was to compare results between CoaguChek XS monitor and laboratory analyzer DiaMed-CD4. The long-term aim was to increase understanding and knowledge of OAT monitoring with POCT in the health center of Ranua.
METHOD: In this study we took comparison samples from 30 patients. From comparison samples it was possible to expose a possible difference in result levels between these two test methods. Difference was compared to the outlined quality targets.
RESULTS: Research showed good correlation (r=0.97) between CoaguChek XS monitor and DiaMed-CD4 analyzer. In 24 samples the difference between results was less than 10 %. In six samples the difference was 10-20 %. The biggest single deviation calculated by INR units was INR 0.4.
CONCLUSION: Although the correlation between these two methods was significant and deviation was mainly within the outlined quality targets, it is recommended to pay attention to the uniform orientation and up-to-date instructions for the users of CoaguChek XS monitor. Reliable POCT result requires understanding of all the process stages
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