bluuebunny/crossref_metadata_2025 huggingface dataset:
ĐÁNH GIÁ THỰC TRẠNG NHIỄM VIÊM GAN B Ở NGƯỜI HIẾN MÁU TÌNH NGUYỆN LẦN ĐẦU TẠI BỆNH VIỆN TRUNG ƯƠNG QUÂN ĐỘI 108 NĂM 2020
Authors: Xuân Thành Nguyễn , Huy Khôi Lê , Quốc Việt Ngô , Thị Ngà Ngô , Thị Thu Hương Phạm
Published: June 2021

Mục tiêu: Nghiên cứu đặc điểm và tỉ lệ nhiễm HBV ở người hiến máu tình nguyện lần đầu. Phương pháp: nghiên cứu cắt ngang, labo, mô tả, so sánh. Xác định HBsAg bằng test nhanh SD BIOLINE-sắc ký miễn dịch và xét nghiệm miễn dịch tự động ARCHITECT i2000-Miễn dịch hóa phát quang (Abbott). Kết quả và kết luận: tỉ lệ nhiễm HBV bằng test nhanh là 2,7% và tỉ lệ tăng thêm 0,4% khi thực hiện trên Architect i2000SR. Độ tuổi nhiễm HBV có tỉ lệ cao nhất là <20 tuổi, tỉ lệ nam bị nhiễm HBV 100%, tỉ lệ nhiễm chủ yếu là Sinh viên Cao đẳng và thuộc khu vực Ba vì (bán sơn địa). Tỉ lệ nhóm máu O nhiễm HBV cao nhất chiếm 49%.
SO SÁNH HIỆU QUẢ TRỢ THỊ GẦN CHO NGƯỜI KHIẾM THỊ BẰNG KÍNH PHÓNG ĐẠI VÀ MÁY VIDEO PHÓNG ĐẠI CẦM TAY
Authors: Thị Thu Hiền Nguyễn
Published: June 2021

Mục tiêu: So sánh hiệu quả trợ thị gần cho người khiếm thị bằng kính phóng đại và máy video phóng đại cầm tay (Magnifier Video Handheld Device – MVHD). Phương pháp nghiên cứu: nghiên cứu mô tả được thực hiện trên 80 người khiếm thị từ 7-71 tuổi. Kết quả: Công suất trung bình khi dùng kính phóng đại là +24,6 ± 11,4 D; Công suất trung bình khi dùng máy MVHD là +18,8 ± 8,3 D; Thị lực gần trung bình: trước trợ thị là 20/500 ± 20/630; với kính phóng đại là 20/250 ± 20/500; với máy MVHD là 20/125 ± 20/320 (p<0,001). Khoảng cách đọc: trước trợ thị là 4,42 ± 2,81cm; với kính phóng đại là 7,74 ± 4,17cm; với máy MVHD là 16,38 ± 7,26cm (p<0,001). Tốc độ đọc: trước trợ thị là 23,46 ± 10,52 từ/ phút; với kính phóng đại là 43,74 ± 22,57 từ/ phút; với máy MVHD là 61,2 ± 24,8 từ/ phút (p<0,001). Kết luận: So với kính phóng đại trợ thị gần cho người khiếm thị, máy MVHD cho thị lực nhìn gần, khoảng cách đọc và tốc độ đọc cải thiện hơn hẳn.
BENEFÍCIOS DA ADOÇÃO DO SISTEMA DE REGISTRO DE PREÇOS NAS CONTRATAÇÕES DE BENS E SERVIÇOS: UMA ANÁLISE NO CENTRO DE DESENVOLVIMENTO SUSTENTÁVEL DO SEMIÁRIDO DA UNIVERSIDADE FEDERAL DE CAMPINA GRANDE
Authors: De Oliveira Maria da Conceição , Pereira da Silva Maria Daniella de Oliveira
Published: June 2021

O estudo analisou os benefícios do sistema de registro de preços no processo de contratações de bens e serviços públicos. Para isso, foi realizada uma entrevista com servidores públicos, responsáveis por compras, no Centro de Desenvolvimento Sustentável do Semiárido – CDSA, Campus da Universidade Federal de Campina Grande. A pesquisa caracteriza-se como qualitativa, e foi executada por meio de um estudo de caso. Os resultados demonstraram que a adesão ao sistema de registro de preços é cada vez maior no Campus analisado; quanto as vantagens, foi apontado que o sistema possibilita celeridade processual, redução do número de licitações e a redução dos custos. Em relação às desvantagens foi levantado que existem situações em que os fornecedores não atendem ao quantitativo solicitado, existe a ocorrência de atrasos nas entregas e dependência de outras instituições que gerenciam o processo. Ante o exposto, foi constatado que o sistema de registro de preços é um instrumento que favorece as compras no Campus analisado, e vem se firmando como uma ferramenta de auxílio relevante para a gestão, proporcionando uma melhor abordagem e aperfeiçoamento no processo de compras.
Women’s leadership in chemistry education: An interview with Rachel Mamlok-Naaman
Authors: Blonder Ron
Published: June 2021

Dr. Rachel Mamlok-Naaman, from the Weizmann Institute of Science in Israel, is a distinguished researcher in chemistry education. This paper presents an interview that was conducted in light of her achievements and in recognition of her receiving the IUPAC 2021 award for Distinguished Women in Chemistry or Chemical Engineering.
Susieti duomenys ir bibliotekos
Authors: Hannemann Jan , Kett Jürgen
Published: June 2021

Semantinis saitynas ir ypač Atvirų duomenų sieties iniciatyva skatina institucijas skelbti savo duomenis, jais keistis ir juos susieti. Tai atveria plačias galimybes bibliotekoms – jos gali papildyti savo duomenis, susiedamas juos su kitais, išoriniais duomenų šaltiniais.

Šiame straipsnyje išsamiai aptariama pirmą kartą Vokietijos nacionalinės bibliotekos teikiama susietų atvirų duo­menų paslauga. Daugiausia dėmesio skiriama iššūkiams, su kuriais susidurta steigiant šią paslaugą. Atsižvelgiant į sukauptą patirtį, straipsnyje aptariama keitimosi bibliotekų duomenimis perspektyva ir tarptautiniu lygiu susietų bibli­otekų duomenų kūrimo galimybės. Nusakomi galimi šio proceso palengvinimo būdai ir naujos paslaugos, kurias būtų galima siūlyti besiplečiančių metaduomenų sankaupų pagrindu.
Romos katalikų bažnyčios Mišių knygos Lietuvos nacionalinės Martyno Mažvydo bibliotekos Retų knygų ir rankraščių skyriaus fonduose
Authors: Zemkajutė Agnė
Published: June 2021

Lietuvos nacionalinės Martyno Mažvydo bibliotekos Retų knygų ir rankraščių skyriuje saugoma nemažai Romos katalikų bažnyčios mišiolų, svarbių savo istorine, menine verte. Bet iki šiol jie nebuvo tyrinėti ir klasifikuoti. Straipsnyje, aprašius mišiolo formavimąsi, raidą ir pagrindines dalis, analizuojami senieji leidiniai, išskiriamos teminės grupės, aptariami išskirtiniai egzemplioriai, pateikiamas visų skyriaus fonduose esančių mišiolų bibliografinis sąrašas.
Lietuviškieji slapyvardžiai tarptautiniuose slapyvardžių sąvaduose
Authors: Mačiulis Jonas
Published: June 2021

Šioje apžvalgoje analizuojama 2006 m. Miunchene pradėta leisti „International Encyclopedia of Pseudonyms“. Tai pirmasis darbas, kuris aprėpia viso pasaulio, visų epochų ir visų profesijų žmonių slapyvardžius. Tokio leidinio iki šiol nebuvo. Anksčiau išleisti slapyvardžių žodynai, sąvadai ir pan. buvo specializuoti ar apriboti geografiniu požiūriu. Ši enciklopedija yra akumuliavusi nepaprastai daug vertingos, o kartais ir unikalios informacijos apie slapyvardžius ir jų autorius.

Lietuvos nacionalinę Martyno Mažvydo biblioteką yra pasiekę pirmieji 5 jos tomai. Jie čia ir aptariami.

Enciklopedijos autoriams pagrindinis lietuviškųjų slapyvardžių identifikavimo šaltinis buvo leidinys „Baltischer biographischer Index“. Šis atsakingai parengtas Baltijos šalių žymiausių žmonių žinynas labai mažai kreipė dėmesio į jų slapyvardžius. Todėl ir enciklopedijoje šalia vieno kito tikrai minėtino slapyvardžio daug atsitiktinių. Joje nėra indeksuotas nė vienas Simono Daukanto, Jono Basanavičiaus, Vinco Kudirkos ir kt. slapyvardis. Taip nebūtų atsitikę, jei enciklopedijos rengėjai būtų rėmęsi lietuviškais šaltiniais – V. Biržiškos 1943 m. išleistu sąrašu „Lietuviškieji slapyvardžiai ir slapyraidės“ bei Nacionalinės bibliotekos 2004 m. išleistu stambiu lietuviškos spaudos iki 1990 m. slapyvardžių sąvadu „Lietuviškieji slapyvardžiai“. Beje, „International Encyclopedia of Pseudonyms“, pateikdama asmenų lietuviškas pavardes, labai retai nurodo jų tautybę ar kilmės šalį.

Taip pat siūloma skelbti internete kad ir negausią, bet informatyvią medžiagą (sąrašą ar žodyną, įvadinį žodį), teisingai atspindinčią lietuviškųjų slapyvardžių vartojimo mastą ir priežastis.
Gairės „Valstybinė bibliografija skaitmeniniame amžiuje: patarimai ir naujos kryptys“
Authors: Žumer Maja
Published: June 2021

Po keletą metų trukusio aptarimo ir susirašinėjimo Valstybinės bibliografijos skaitmeniniame amžiuje darbo grupė parengė naujas gaires. Jos neseniai paskelbtos. Dokumente apžvelgiami su atranka, katalogavimu ir organizaciniais aspektais susiję iššūkiai, su kuriais susiduria valstybinės bibliografijos tarnybos. Atsižvelgiant į tai, kad bibliografinė apskaita įvairiose šalyse labai skiriasi, dokumentas nėra nurodomojo pobūdžio, jame tik pateikiami galimi pasirinkimo variantai, iliustruoti pavyzdžiais. Darbo grupė nori paskatinti valstybinės bibliografijos tarnybas įvertinti gaires ir pateikti atsiliepimus IFLA Bibliografijos sekcijai.
Rinkinių skaitmeninimas Lietuvos dailės muziejuje
Authors: Meškelevičienė Loreta
Published: June 2021

Lietuvos dailės muziejus dalyvauja „Integralios virtualios bibliotekų informacinės sistemos sukūrimo“ skaitmeninimo programoje. Straipsnyje aprašomas pasirengimas projektui ir jo eiga. Aptariamos skaitmeninimo techninės galimybės ir jo eiga bei pirmieji rezultatai, skaitmeninama medžiaga: dailės kūrinių ant popieriaus eksponatai; istorinės ir meninės fotografijos rinkiniai; muziejaus dokumentų, žemėlapių, brėžinių grupė; bonistikos, sfragistikos ir numizmatikos rinkinys; tekstilės eksponatai; tapybos kūriniai.
Rekomendacijos kuo greičiau patobulinti OPAC ir valstybinės bibliografijos tarnybos vaidmuo sprendžiant šį uždavinį
Authors: D. Byrum John
Published: June 2021

Šiuolaikinis informacijos vartotojas, pasitikėdamas internetinių paieškos sistemų efektyvumu ir palankia jam interneto terpe, tikisi greitai ir patogiu būdu gauti atsakymą į užklausą. Tuo tarpu vis labiau akivaizdu, kad įprasti bibliotekų OPAC nesuteikia jam tokios patogios ir lengvos prieigos prie informacijos. Visos valstybinės bibliografijos tarnybos (VBT) ir bibliotekos turėtų tinkamai į tai sureaguoti ir imtis priemonių, kad jų duomenų bazės ir kiti bibliog­rafiniai produktai būtų informatyvesni nei šiuo metu ištekliams kuriami įrašai. Tuo pačiu VBT privalo suvokti būtiny­bę atsirasti naujos kartos OPAC su daug didesnėmis funkcinėmis galimybėmis. Daugeliu atvejų tam gali būti naudoja­mos tipinės internetinių paieškos sistemų bei virtualių knygynų savybės ir funkcijos. Turint galvoje visiems prieinamas informacijos paieškos alternatyvas, būtina kuo greičiau atsižvelgti į vartotojų reikmes, kitaip XXI amžiuje VBT ir bibliotekos gali juos prarasti. Straipsnyje pateikiamos konkrečios rekomendacijos, padėsiančios VBT ir bibliotekoms įvardyti problemas ir pasiūlyti jų sprendimo būdus.
IFLA-CDNL Bibliografinių standartų atnaujinimo aljansas (ICABS)
Authors: Gömpel Renate
Published: June 2021

Beveik prieš dvejus metus Berlyne vykusios IFLA konferencijos metu buvo įsteigtas IFLA-CDNL Bibliografinių standartų aljansas. Šiame straipsnyje trumpai apžvelgiama jo partnerių veikla.
FRAR: FRBR koncepcijos praplėtimas autoritetiniais duomenimis
Authors: Patton Glenn E.
Published: June 2021

IFLA FRANAR darbo grupė įpareigota praplėsti IFLA „Funkcinių reikalavimų bibliografiniams įrašams“  koncepciją autoritetiniais duomenimis. Straipsnyje aptariama esama šios grupės veiklos būklė.
Gairės elektroninei valstybinei bibliografijai: tarpiniai rezultatai
Authors: Žumer Maja
Published: June 2021

Gairių elektroninei valstybinei bibliografijai rengimo darbo grupė savo veiklą pradėjo nuo vartotojų ir valstybi­nės bibliografijos (VB) vartojimo analizės. Kokią reikšmę VB turi bibliotekoms ir bibliotekininkams, jau seniai žino­ma, tačiau darbo metu buvo išskirti ir kiti VB vartotojai, išanalizuoti jų reikalavimai VB. Šios analizės rezultatai buvo pateikti ir aptarti; atkreiptas dėmesys į esamus ir potencialius vartotojus, taip pat aptartas VB vartojimo pobūdis. Grupė tęs savo darbą, atsižvelgdama į vartotojų poreikių įvairovę ir išskiriant VB funkcines galimybes.

„Einamoji valstybinė bibliografija yra veidrodis, kuriame atsispindi šalies kultūra. Einamoji valstybinė biblio­grafija leidžia susipažinti kiekvienam besikreipiančiam į ją su šalies savitumais. Žemės ūkis ir technologijos, visuome­nės struktūra, atsispindinti tos šalies kalba įvairiausiose publikacijose, tradicijos ir ceremonijos, turinčios reikšmę tautos gyvenimui, švietimo, literatūros ir mokslo vaidmuo, žymūs to meto literatūros autoriai, politinės, socialinės ir religinės šalies vystymosi tendencijos - viskas tampa pastebima. Einamoji valstybinė bibliografija turi taip pat atspin­dėti šalies interesus ir unikalias savybes, kaip veidrodis atspindi kiekvieno žmogaus unikalumą“ (Bell, 1998).
ISSN vieta besivystančioje informacinėje visuomenėje elektroninių ryšių amžiuje
Authors: Petrauskienė Danutė
Published: June 2021

Straipsnyje pateikiami naujausi ISSN sistemos pasikeitimai: ISSN taikymo srities išplėtimas, formatų suderinimas. Apžvelgiama naujojo ISSN vadovo struktūra, nagrinėjamas ISSN strateginis veiklos planas bei ISSN standarto peržiū­ras eiga.
Metaduomenų valdymas nevienalytėje skaitmeninėje bibliotekoje
Authors: Haslhofer Bernhard , Hecht Robert
Published: June 2021

Daugelio įstaigų, veikiančių kultūros paveldo srityje, turinys jau prieinamas internete. Tačiau organizacijos, norinčios įgyvendinti projektus, kurie į vieną visumą sujungtų įvairių įstaigų turinį, susiduria su problema, kaip turinį padaryti prieinamą susieta prieiga. Tokiu atveju svarbiausią vaidmenį atlieka metaduomenys, todėl būtų naudinga sukurti metaduomenų valdymo sistemą, kuri galėtų apdoroti įvairiarūšių duomenų aprašus ir lengvai integruotų juos į naujų arba jau veikiančių skaitmeninių bibliotekų struktūras. Autoriai siūlo metaduomenų valdymo sistemą, kurioje taikoma semantinio žiniatinklio technologija nevienalytiškumo problemai spręsti ir kuri remiasi žiniatinklio paslaugos technologija nesudėtingai sistemos integracijai pasiekti. Šis sprendimas palengvina integruotų skaitmeninių bibliotekų sistemų kūrimą ir nuima nevienalyčių metaduomenų valdymo naštą nuo taikomųjų programų kūrėjų pečių.
Projektas „Integralios virtualios bibliotekų informacinės sistemos sukūrimas“ – skaitmeninamų objektų atranka
Authors: Kvietkauskienė Skirmantė , Steponaitienė Jolita
Published: June 2021

Projekto „Integralios virtualios bibliotekų informacinės sistemos sukūrimas“ rengimo metu buvo suformuoti kul­tūros paveldo atrankos skaitmeninimui kriterijai, grįsti MINERVA programos rekomendacijomis. Tačiau universalių kriterijų, tinkančių visiems, rasti neįmanoma, nes skirtinga kultūros paveldo objekto vertė bei pačios organizacijos, dalyvaujančios skaitmeninimo programoje, profilis lemia atrankos kriterijų būtinybę. Todėl Lietuvos nacionalinė Mar­tyno Mažvydo biblioteka, vykdydama jai pavestas publikuoto kultūros paveldo ilgalaikio išsaugojimo funkcijas ir siekdama atkreipti valstybės institucijų dėmesį į poreikį integruotis į Europos elektroninio turinio erdvę, parengė kilno­jamųjų kultūros vertybių ilgalaikio išsaugojimo koncepcijos projektą, kuriame numatoma integruoti atminties institu­cijas, skaitmeninti kultūros paveldą ir sukurti bendrą informacinę sistemą. Koncepcijoje pateikti ir bendrieji kultūros paveldo skaitmeninimo objektų atrankos kriterijai.
Lietuviškų knygų reklamos savitumai po spaudos draudimo panaikinimo: 1904-1914 metai
Authors: Černiauskaitė Violeta
Published: June 2021

Straipsnyje išanalizuotos lietuviškų knygų reklamos raidos aplinkybės bei savitumai pirmajame atgautosios lietuviškos spaudos dešimtmetyje. Tyrimo objektu pasirinkta spausdintinė lietuviškų knygų reklama suprantama kaip tikslinga ir kryptinga informacija apie išleidžiamas ar parduodamas knygas, siekiant didinti jų paklausą bei pardavimą. Analizuojant laikmečio pirminius šaltinius, atskleista knygų reklamos įtaka jų populiarinimui ir sklaidai, pilietinės visuomenės brendimo, savišvietos, tautinės knygininkystės, spaudos bei kitų lietuviško verslo sričių formavimuisi. Išsamiau aptartos knygų reklaminių skelbimų periodinėje spaudoje, kitose knygose bei išleistų atskirais lapeliais ar lankstiniais formos bei turinio ypatybės, įvertinti pirmieji profesionalios knygų reklamos žingsniai, remiantis knygų anotavimo bei recenzavimo patirtimi, pirmųjų lietuviškų spaudos agentūrų reikšmė reklamos raidai.
„Knygos turi savo likimus“: Karaliaučiaus institucijų knygos ženklai Lietuvos nacionalinėje bibliotekoje saugomose knygose
Authors: Steponaitienė Jolita
Published: June 2021

Ilgus metus Karaliaučiaus mokslo ir kultūros institucijose kauptas ir saugotas dokumentinis paveldas dėl istorinių kataklizmų bei neabejotinų Lietuvos šviesuomenės pastangų tapo mūsų šalies istorijos ir kultūros paveldo dalimi. Jo sklaida ir populiarinimas leidžia atskleisti knygotyros dalį, kuriai pastaraisiais metais vis daugiau skiriama dėmesio, t. y. knygų nuosavybės ženklus. Istorinėms Karaliaučiaus mokslo ir kultūros institucijoms bei asmeninėms bibliotekoms priklausiusių knygų ekslibrisai, lipdės, antspaudai, įrašai patys yra dokumentinis paveldas, svarbus ne tik informaci­ne, bet ir menine prasme.
INCLUSÃO: UM CAMINHO QUE PRECISADA SER PERCORRIDO
Authors: Leite Madson Márcio de Farias , Mont’Alverne Clara Roseane da Silva Azevedo
Published: June 2021

A Educação Especial perpassou por diversos caminhos para se chegar ao processo da inclusão no tocante a sua garantia de direitos segundo as leis e políticas públicas que asseguram sua oficialização. Nem sempre foi assim, a inclusão vem acontecendo de modo gradativo nos dias atuais, sendo que ainda existe um longo processo para que a inclusão para todos possa se tornar efetiva tal qual está escrito nas leis que a garantem. A pesquisa tem como objetivo trazer um estudo sobre a inclusão como sendo um caminho que precisa ser percorrido, já que não se consegue ser pertencente e se sentir incluso sem antes percorrer e passar por várias etapas até o processo da inclusão ser efetivado. A pesquisa trouxe como metodologia a pesquisa bibliográfica, onde foi realizado um levantamento em artigos e trabalhos já publicados que retratassem do processo percorrido para se chegar ao tão esperado método inclusivo. A inclusão sempre foi percebido como algo não muito importante ao longo dos anos, isso foi devido que apenas uma pequena parcela da população chegavam a procurar seus direitos, e fazer com que os documentos que legalizavam a inclusão fossem realmente efetivados, as pesquisa e estudos realizados na área da inclusão possibilitou que uma grande parcela de pessoas com alguma deficiência pudessem lutar e reivindicar por direitos até antes negados. A pesquisa concluiu que os avanços tecnológicos, as políticas públicas, as leis e a luta de toda uma sociedade proporcionou que a inclusão mesmo sendo necessário percorrer um longo caminho, ela pode de fato ocorrer e beneficiar na vida das pessoas que nasceram ou foram acometidas ao longo do tempo por alguma deficiência. E assim, passando a ser enfatizado e desmistificado como aquilo que parecia ser algo inalcançável, passasse a ser efetivado e ganhasse credibilidade de escolas, família e demais espaços públicos como sendo obrigados a reconhecer e aceitar, como também tendo que se capacitarem para poder fazer valer a garantia de todos os direitos inerentes aos sujeitos com deficiência ao longo de toda a sua vida, isso independentemente de onde eles venham querer estar ou permanecer. E dessa forma propiciar na vida desses sujeitos um desenvolvimento de todas as suas potencialidades, através de técnicas e métodos inovadores para alcançarem a equiparação aos outros sujeitos sem nenhuma deficiência específica.
O USO DE MÍDIAS E TECNOLOGIAS DIGITAIS NAS AULAS REMOTAS DA EDUCAÇÃO BÁSICA DO MUNICÍPIO DA LAPA-PR, NO CONTEXTO PANDÊMICO DE 2020: DESAFIOS, LIMITAÇÕES, APRENDIZADOS E PROGRESSOS DOS PROFISSIONAIS DE EDUCAÇÃO PÚBLICA
Authors: Tavares Daiane Aparecida Dubinski , Bolfe Juliane Simões
Published: June 2021

presente trabalho tem como objetivo investigar a percepção de professores sobre o uso de mídias e tecnologias digitais, bem como vantagens e desvantagens, as dificuldades e êxitos, em especial no período pandêmico de 2020. Para a realização do mesmo utilizou-se pesquisa biográfica e questionário destinado a vinte e sete professoras da rede de ensino básico do município da Lapa-Pr. O presente assunto é muito amplo, trazendo muitos questionamentos e possíveis estudos. Assim, optou-se por buscar conhecimento a respeito da importância do uso das tecnologias digitais em sala de aula, nas aulas remotas e o que isso acarretou no trabalho do educador. Observou-se a demanda por adequação diante da nova realidade e da necessidade de constante capacitação primordialmente no uso didático de tecnologias digitais e a importância da resiliência por parte desses profissionais. Os professores demonstraram grande superação enfrentando uma realidade desconhecida, adaptando o ensino presencial para o remoto e se reinventando.
Constraining the response factors of an extractive electrospray ionization mass spectrometer for near-molecular aerosol speciation
Authors: Wang Dongyu S. , Lee Chuan Ping , Krechmer Jordan E. , Majluf Francesca , Tong Yandong , Canagaratna Manjula R. , Schmale Julia , Prévôt André S. H. , Baltensperger Urs , Dommen Josef , El Haddad Imad , Slowik Jay G. , Bell David M.
Published: June 2021

Abstract. Online characterization of aerosol composition at the near-molecular level is key to understanding chemical reaction mechanisms, kinetics, and sources under various atmospheric conditions. The recently developed extractive electrospray ionization time-of-flight mass spectrometer (EESI-TOF) is capable of detecting a wide range of organic oxidation products in the particle phase in real time with minimal fragmentation. Quantification can sometimes be hindered by a lack of available commercial standards for aerosol constituents, however. Good correlations between the EESI-TOF and other aerosol speciation techniques have been reported, though no attempts have yet been made to parameterize the EESI-TOF response factor for different chemical species. Here, we report the first parameterization of the response factors of the EESI-TOF for secondary organic aerosol (SOA) at the near-molecular level based on their elemental composition. SOA was formed by ozonolysis of monoterpenes or OH-oxidation of aromatics inside an oxidation flow reactor (OFR) using ammonium nitrate as seed particles. A Vocus proton-transfer reaction mass spectrometer (Vocus-PTR) and a high-resolution aerosol mass spectrometer (AMS) were used to determine the gas phase molecular composition and the particle phase bulk chemical composition, respectively. The EESI response factors towards bulk SOA and the inorganic coating were constrained by intercomparison with the AMS. The highest bulk EESI response factor was observed for SOA produced from 1,3,5-trimethylbenzene, followed by those produced from d-limonene and o-cresol, consistent with previous findings. The near-molecular EESI response factors were derived from intercomparisons with Vocus-PTR measurements, and were found to vary from 103 to 106 ions s−1 ppb−1, mostly within ±1 order of magnitude of their geometric mean of 104.5 ions s−1 ppb−1. For aromatic SOA components, the EESI response factors correlated with molecular weight and oxygen content, and inversely correlated with volatility. The near-molecular response factors agreed within a factor of 20 for isomers observed across the aromatics and biogenic systems. Parameterization of the near-molecular response factors based on the measured elemental formulae could reproduce the empirically determined response factor for a single VOC system to within a factor of 5 for the configuration of our mass spectrometers. Results demonstrate that standard-free quantification using EESI-TOF is possible.
Attenuation of beta radiation in granular matrices: implications for trapped-charge dating
Authors: Cunningham Alastair Charles , Buylaert Jan-Pieter , Murray Andrew Sean
Published: June 2021

Abstract. Mineral grains within sediment or rock absorb a radiation dose from the decay of radionuclides in the host matrix. For the beta dose component, the estimated dose rate must be adjusted for the attenuation of beta particles within the mineral grains. Standard calculations, originally designed for thermoluminescence dating of pottery, assume that the grain is embedded in a homogenous medium. However, most current applications of trapped-charge dating concern sand- or silt-sized dosimeters embedded in granular sediment. In such cases, the radionuclide sources are not homogeneous, but are localized in discrete grains or held on grain surfaces. We show here that the mean dose rate to dosimeter grains in a granular matrix is dependent on the grain-size distributions of the source grains, and of the bulk sediment, as well as on the grain size of the dosimeters. We further argue that U and Th sources are likely to be held primarily on grain surfaces, which causes the dose rate to dosimeter grains to be significantly higher than for sources distributed uniformly throughout grains. For a typical well-sorted medium sand, the beta dose rates derived from surface U and Th sources are higher by 9 % and 14 %, respectively, compared to a homogenous distribution of sources. We account for these effects using an expanded model of beta attenuation, and validate the model against Monte Carlo radiation transport simulations within a geometry of packed spheres.
Relating snowfall observations to Greenland ice sheet mass changes: an atmospheric circulation perspective
Authors: Gallagher Michael , Shupe Matthew , Chepfer Hélène , L'Ecuyer Tristan
Published: June 2021

Abstract. Snowfall is the major source of mass for the Greenland ice sheet but the spatial and temporal variability of its contributions to mass balance have so far been inadequately quantified. By characterizing local atmospheric circulation and utilizing CloudSat spaceborne radar observations of snowfall, we provide a detailed spatial analysis of snowfall variability and its relationship to Greenland mass balance, presenting first-of-their-kind daily maps of the spatial variability in snowfall from observations across Greenland. For identified regional atmospheric circulation patterns, we show that the spatial distribution and net mass input of snowfall varies significantly with the position and strength of surface cyclones. Cyclones west of Greenland driving southerly flow contribute significantly more snowfall than any other circulation regime, with each daily occurrence of the most extreme southerly circulation pattern is contributes an average of 1.66 Gt of snow to the Greenland ice sheet. While cyclones east of Greenland, patterns with the least snowfall, contribute as little as 0.58 Gt each day. Above 2 km on the ice sheet where snowfall is inconsistent, extreme southerly patterns are the most significant mass contributors, with up to 1.20 Gt of snowfall above this elevation. This analysis demonstrates that snowfall over the interior of Greenland varies by up to a factor of five depending on regional circulation conditions. Using independent observations of mass changes made by the Gravity Recovery and Climate Experiment (GRACE), we verify that the largest mass increases are tied to the southerly regime with cyclones west of Greenland. For occurrences of the strongest southerly pattern, GRACE indicates a net mass increase of 1.29 Gt in the ice sheet accumulation zone (above 2 km elevation) compared to the 1.20 Gt of snowfall observed by CloudSat. This good overall agreement suggests that the analytical approach presented here can be used to directly quantify snowfall mass contributions and their most significant drivers spatially across the GrIS. While previous research has implicated this same southerly regime in ablation processes during summer, this paper shows that ablation mass loss in this circulation regime is nearly an order of magnitude larger than the mass gain from associated snowfall. For daily occurrences of the southerly circulation regime, a mass loss of approximately 11 Gt is observed across the ice sheet despite snowfall mass input exceeding one gigatonne. By analyzing the spatial variability of snowfall and mass changes, this research provides new insight into connections between regional atmospheric circulation and GrIS mass balance.
Sistem Monitoring Pada Tanaman Hidroponik Menggunakan Arduino UNO dan NodeMCU
Authors: Karim Syafei , Khamidah Ida Maratul , Yulianto
Published: June 2021

Hidroponik merupakan cara bercocok tanam tanpa menggunakan tanah sebagai media tanamnya, tetapi menggunakan air yang mengandung nutrisi yang dibutuhkan oleh tanaman. Kelebihan teknik menanam hidroponik antara lain penggunaan lahan yang efisien, penggunaan pupuk dan air lebih efisien dan terkendali. Sedangkan kekurangan dari teknik ini adalah membutuhkan ketelitian, ketelatenan, dan pemantauan secara terus-menerus. Untuk mengatasi masalah tersebut maka dapat memanfaatkan kemajuan teknologi yang sudah berkembang. Saat ini banyak sistem yang mampu mengolah dan mengerjakan pekerjaan manusia yang dilakukan secara manual dapat menjadi lebih mudah, cepat, dan akurat baik dari segi waktu dan tenaga. Salah satunya adalah mikrokontroller Arduino Uno. Terdapat tiga sensor yang digunakan yaitu sensor DHT-22 untuk mendeteksi suhu dan kelembaban, sensor pH untuk mendeteksi nilai pH, sensor TDS untuk mendeteksi nutrisi air pada tanaman. Data-data sensor tersebut dikendalikan oleh Arduino Uno dan datanya dikirim ke server Thingsboard menggunakan protokol MQTT yang datanya ditampilkan dalam bentuk chart dan grafik. Dari hasil pengujian modul sensor yang dilakukan, sensor sudah bekerja dengan baik dengan berdasarkan waktu dengan selisih satu jam.
Aplikasi Metode Object Based Image Analysis (OBIA) Untuk Identifikasi Atap Bangunan
Authors: Noraini Alifah , Sudiasa I Nyoman , Tjahjadi Martinus Edwin
Published: June 2021

Salah satu permasalahan dalam proses pembuatan peta skala besar adalah belum terdapat metode ekstraksi objek secara otomatis, sehingga dijitasi secara manual masih dilakukan. Metode ekstraksi objek secara otomatis diharapkan dapat mempercepat pemetaan skala besar. Di Indonesia, pemetaan skala besar digunakan untuk penyusunan Rencana Detil Tata Ruang (RDTR) Kota/ Kabupaten. Objek detil yang terdapat dalam dokumen RDTR tersebut adalah bangunan. Tujuan dilakukan penelitian ini adalah identifikasi atap bangunan menggunakan metode klasifikasi berbasis objek. Data yang digunakan berupa citra foto udara. Dilakukan proses segmentasi menggunakan algoritma multiresolusi dengan parameter segmentasi skala, bentuk, dan kekompakan Setelah proses segmentasi, dilakukan proses klasifikasi menggunakan metode nearest neighbor. Hasil penelitian menunjukkan bahwa masih terdapat kesalahan dalam proses klasifikasi objek. Atap bangunan tidak teridentfikasi secara keseluruhan dalam kelas objek bangunan.
Implementasi SIG Untuk Monitoring Kesehatan Lingkungan Studi Kasus Kelurahan Harapan Baru
Authors: Beze Husmul , Hamka  , Yulianto  , Nurmarini Eva , Salusu Heriad Daud
Published: June 2021

Environmental health is an important factor in improving the health and well-being of human life and to prevent the dangers of disease. Environmental monitoring and engineering efforts need to be undertaken to meet these objectives. Harapan Baru Village is one of the villages in the Loa Janan Ilir District, Samarinda City, East Kalimantan Province. Harapan Baru Village is a fairly dense area. According to BPS data, Kota Samarinda in 2017 has a density of 4,304.34 inhabitants per km2. This kelurahan has problems in monitoring environmental health. Geographical information system (GIS) technology is currently developing rapidly. GIS can provide a monitoring model solution in environmental health countermeasures from a preventive side. For this reason, a study was conducted on environmental health monitoring in the Harapan Baru Village area using a web-based geographic information system. The method used to carry out the monitoring process is to use geographic information system tools, especially its spatial clustering analysis capabilities. The results showed that the GIS application of Environmental Health Monitoring in Harapan Baru was able to provide strong and up-to-date information about the environmental health conditions of residents. In particular, the system's ability to perform spatial queries by combining spatial and non-spatial attributes.
Analysis of Differences Innovation in Regional Development Planning (Case Studies in South Sulawesi and West Sumatra Provinces)
Authors: Latul Lily
Published: June 2021

The existence of this technological development has become a medium used by a state administrator to improve welfare or services for its citizens. In need of an innovation that is used to capture this phenomenon. Local government innovation is very important in the process of implementing good and reliable governance (Good Govrnance). The implementation of regional development always begins with research and development activities, as well as assessment. Development planning is not only done on the table, without looking at the reality on the ground. The core problem of planning is in the planning process itself, which includes a series of procedures and involves many parties. The lengthy process and the many parties involved often make planning ineffective. Based on this, this study aims to analyze the differences in planning innovations carried out in two different regions, namely South Sulawesi and West Sumatra, to compare the innovations of the two regions. This study uses a qualitative descriptive approach. As a result, South Sulawesi and West Sumatra have different development innovations, in which South Sulawesi places more emphasis on improving website-based information systems which will become a reference for development planning, while West Sumatra emphasizes the assessment of construction services that will carry out development planning in the West Sumatra region. Suggestions in the future, each agency allocates a budget to increase the admin capacity of the SIPPD manager and provide cost consequences as motivation.
Denmark COVID-19 Governmental Response
Authors: S. Abdellatif Omar , Behbehani Ali , Landin Mauricio
Published: June 2021

The International Health Regulations (2005) are legally binding on 196 States Parties, Including all WHO Member States. The IHR aims to keep the world informed about public health risks, through committing all signatories to cooperate together in combating any future “illness or medical condition, irrespective of origin or source, that presents or could present significant harm to humans.” Under IHR, countries agreed to strengthen their public health capacities and notify the WHO of any such illness in their populations. The WHO would be the centralized body for all countries facing a health threat, with the power to declare a “public health emergency of international concern,” issue recommendations, and work with countries to tackle a crisis. Although, with the sudden and rapid spread of COVID-19 in the world, many countries varied in implementing the WHO guidelines and health recommendations. While some countries followed the WHO guidelines, others imposed travel restrictions against the WHO’s recommendations. Some refused to share their data with the organization. Others banned the export of medical equipment, even in the face of global shortages. The UN Compliance Research group will focus during the current cycle on analyzing the compliance of the WHO member states to the organizations guidelines during the COVID-19 pandemic.
Relating health information literacy self-efficacy to information technology use and health status: A large-scale study among Chinese undergraduates
Authors: Deng Shengli , Chen Xiaoyu , Fu Shaoxiong
Published: June 2021

The purpose of this paper is to relate individuals’ health information literacy (HIL) self-efficacy to their information technology (IT) use and health status. Using a large-scale field survey with 6,160 valid respondents from undergraduates in a Chinese university, we found that individuals’ HIL self-efficacy was significantly related to some socio-demographics and lifestyle features, IT use, and health status. Meanwhile, some socio-demographics and lifestyle features and health status help identify low HIL self-efficacy individuals, while moderate daily IT use may improve HIL self-efficacy. Theoretical and practical implications, as well as limitations and future work, are also discussed.
Effect of flow switch on two phase flow evenness based on granular magnesium
Authors: Ostapenko A.V , Shevchenko S.A , Kislyakov V.G , Manachin I.О
Published: June 2021

The aim of the work was to study, with the help of a laboratory setup, the influence of the existing design of the flow switch on the uniformity of movement of a two-phase flow, consisting of granular magnesium and compressed gas. On the basis of a typical layout of injection systems for the injection of granular magnesium at the pig iron desulphurization plants in the ladles, a laboratory installation has been created that allows the generation of a stable uniform flow of granular magnesium in a stream of compressed air. The stream was passed through a transparent full-scale model of a standard unit for switching the flow into three lances, while the angle of inclination of the device itself, the flow switch, changed. The process was recorded by video. The frame-by-frame analysis of the video image made it possible to study the effect of the existing design of the flow switch at different angles of inclination on the uniformity of the movement of the two-phase flow along the path of the injection system during ladle desulfurization of the molten iron with granular magnesium. The presented studies made it possible to establish the main causes and reveal the mechanism of the generation of pulsations in the cavity of the studied node of the flow switch. It is shown that the volume of the switch cavity contributes to the accumulation of magnesium in it and when tilting more than 22° to the horizon, spontaneous pouring of the accumulated magnesium in the cavity occurs, which is the main reason for the occurrence of pulsations. The recommendations developed on the basis of the research results and their implementation on the existing cast iron desulfurization unit in 100 ton buckets of the new steel plant of the Qingdao Steel Plant (Qingdao, PRC, 2016) made it possible to reduce roughness during processing and ensure stable reagent injection with a double intensity.
Analisis Trafik Pengguna XL Axiata Jakarta Selama Pandemi Covid-19 dengan Menggunakan Metode Regresi Linier
Authors: Diana Dyah Damayanti  , Theresiawati  , Kraugusteeliana
Published: June 2021

2020 is a very disturbing year for the whole world because in 2020 there is a deadly virus, the virus is called Covid-19. The Indonesian government has a strategy to deal with the Covid-19 virus, namely by implementing Large-Scale Social Restrictions (PSBB). Where the implementation of this PSBB requires residents to do more activities at home. To carry out activities at home, internet access is needed. Therefore, providers are the companies that benefit the most, providers are companies that provide internet services, one of which is XL Axiata. During the Covid-19 pandemic, XL Axiata company wants to conduct analysis for XL Axiata in the next year, whether the traffic of XL Axiata users has increased or decreased and how many devices need to be upgraded or safe. In conducting this analysis, it is necessary to perform fast data processing, data processing using the Data Mining method with Linear Regression techniques. The data to be processed will be obtained from the XL Axiata company, namely XL Axiata traffic data. By processing data using Linear Regression results in future predictions, the West Jakarta Municipality has increased per week by an average of 0.12%, the East Jakarta Municipality has decreased per week by an average of 0.27%, the Central Jakarta Municipality experiences the decline per week by an average of 2.31%, the South Jakarta Municipality experienced an increase per week by an average of 1.17%, and in the North Jakarta Municipality it decreased per week by an average of 0.12%.
Mobile technology to promote education 4.0 in Vietnam
Authors: Nguyen Loc My Thi , Hoang Tuong Sy
Published: June 2021

Currently, with development of technology, the use of gadgets like smart devices (smartphones, tablets) is becoming more common. In recent years, mobile technologies play an increasingly important role in students’ lives, study and scientific research. In addition, currently most students in higher education institutions use smartphones. Many universities use electronic devices such as smart phones, laptops, computers, and tablets as teaching devices and building websites that run on mobile platforms or developing applications that can be easily downloaded from google play or Apple store. Therefore, this article focuses on analyzing the perspectives as well as the application of learning on mobile devices in higher education 4.0. Surveys of students owning a mobile device and doing their learning on a mobile phone show that the currently students owning mobile devices is high and will continue to increase. The data was analyzed through the calculation of the proportion of responses in the questionnaires. The article also summarizes the results of short discussions about the results of the research, finding that mobile technologies play an important role in teaching and learning in the current context of higher education in Vietnam. Based on the results, the authors recommend that more studies should be done to provide knowledge regarding the application and development of mobile technologies in learning and research of students towards the era of industrial revolution 4.0 (IR4).
Determining characteristics of teachers, students and educational managers in the 4.0 educational context
Authors: Cuong Viet Tran , Le Quang Hong
Published: June 2021

The objective of the study is to identify the characteristics of school administrators, teachers, and students in the 4.0 educational context. The study used research method from a qualitative perspective, using a basic qualitative research model. The study participants consisted of 10 lecturers selected according to the snowball method. The study data were collected through a semi-structured interview. Content analysis techniques will be used to analyze the data. We hope that the Education 4.0 revolution can be realized in Vietnamese education system. As a result, open access, personal education, idea transformation, digital integration into education, open learning environments, lifelong learning, discovery education, and multidisciplinary education are the main components of educations 4.0. It has been found that the key qualities expected from the students of Education 4.0 are interpersonal skills, technology skills, study skills, and personal style. The main qualities expected from the teachers in educations 4.0 are technology skills, instructional skills, lifelong learning skills, and personal style. Finally, the main qualities expected from school administrators in Education 4.0 are instructional skills, technology skills, learning skills.
Stemtech model in education 4.0: Designing height measuring instruments in grade 10
Authors: Lam Huy Minh , Dang Hue Thi , Le Tien Nhut , Huynh Ngan Tuyet
Published: June 2021

With the development in the fourth industrial revolution, there have been urgent demands for new human resources in the world. The mission set for the education sector is to prepare students with skills and knowledge in line with global standards to keep up with the industrial age 4.0. Among the educational trends that serve the fourth industrial revolution, STEM education has been demonstrating its superiority through various studies. This study applies the STEMTech model, which connects the fields of Science, Technology, Engineering, and Mathematics with a central technological factor, to create STEM products in the context of high schools in Vietnam recently. Firstly, the research trains students about STEM education, STEMTech model, and some new technologies; then divides the class into multiple groups of students to conduct a project based on STEMTech model; finally, surveys students. Statistical analysis was used to evaluate STEMTech model, whose results show that STEMTech model can engage students in learning, develop their creativity, and promote other competencies.
Digital transformation in art pedagogical training in Vietnam today
Authors: Nguyen Son Duc
Published: June 2021

E-learning is one of the non-traditional education forms and sustainable innovations that can spread knowledge across space, time, and borders worldwide. The article highlights the role, importance, and impact of digital transformation in the field of arts in general and particularly art pedagogical training in Vietnam today. In addition, the article mentions and analyzes the changes among universities, lecturers in terms of art teaching methods and art pedagogical training… during the process of digital transformation. Given the unique features of art pedagogy, a digital transformation model is proposed to shape and develop digital transformation strategies, which hopefully helps to digitize the learner’s experience with digital teaching and learning activities; as well as the environment and mode of operation and training facilities. The model may offer a digital solution to practical problems in art pedagogical training among related training institutions in Vietnam nowadays.
The process of evaluating students based on university program learning outcomes
Authors: Luu Linh Khanh , Phan Long
Published: June 2021

As higher education tends to witness drastic changes, the quality of output is highly valued, which demands continuous innovation in the teaching process, especially on assessing students’ learning outcomes from the training program’s requirements. The paper outlines the relationship between student assessment and other components in the teaching process, performance indicator (PI) for the program learning outcomes, which refers to teaching, testing and assessment activities. At the same time, the article presents the process of setting up and evaluating the achievements of students through the method of PI evaluation based on the program’s learning outcomes. The current situation is that the learning outcomes of undergraduate training programs in various universities in the country tend to be developed in a general and highly integrated manner, thus widening the gap between the learning outcomes’ requirements and the actual teaching, testing, and evaluation activities of the module/ subject.