bluuebunny/crossref_metadata_2025 huggingface dataset:
Use of ordinal logistic regression in crop yield forecasting
Authors: KUMARI VANDITA , AGRAWAL RANJANA , KUMAR AMRENDER
Published: December 2021

The performance of ordinal logistic regression and discriminant function analysis has been compared in crop yield forecasting of wheat crop for Kanpur district of Uttar Pradesh. Crop years were divided into two or three groups based on the detrended yield. Crop yield forecast models have been developed using probabilities obtained through ordinal logistic regression along with year as regressors and validated using subsequent years data. In discriminant function approach two types of models were developed, one using scores and another using posterior probabilities. Performance of the models obtained at different weeks was compared using Adj R2, PRESS (Predicted error sum of square), number of misclassifications and forecasts were compared using RMSE (Root Mean Square Error) and MAPE (Mean absolute percentage error) of forecast. Ordinal logistic regression based approach was found to be better than discriminant function analysis approach.
UTICAJ PANDEMIJE KOVID-19 U REPUBLICI SRBIJI NA KUPOVNE ODLUKE POTROŠAČA U E-TRGOVINI
Authors: Kovačević Marija , Petković Goran
Published: December 2021

Uticaj pandemije Kovid-19 (COVID-19) odrazio se na promene u ponašanju potrošača prilikom kupovine. Prilagođavanje novonastaloj situaciji i traženje rešenja za opstanak u svakom smislu, bilo je neizbežno. Pod uticajem Kovid-19, došlo je do poremećaja u lancima snabdevanja. Blaga nestabilnost u snabdevanju prodavnica u Srbiji, mada daleko manje nego u drugim zemljama, a zatim i vanredno stanje izazvano pandemijom Kovid-19, zatvorene prodavnice i nemogućnost kupovine, uslovilo je preteranu zabrinutost i paniku potrošača. Usledilo je gomilanje zaliha nepotrebnih proizvoda zbog bojazni da će nove mere biti donete. Ovakvo stanje dovelo je do promene navika u ponašanju potrošača tokom kupovine, pa je značajno istražiti uticaj COVID-19 na promene navika potrošača u odnosu na period pre pandemije COVID-19. Prikazani su rezultati istraživanja na osnovu onlajn uzorka od 179 ispitanika.
Arthroscopic Versus Open Management of Diffuse-Type Tenosynovial Giant Cell Tumor of the Knee: A Meta-analysis of Retrospective Cohort Studies
Authors: Chandra Akhil A. , Agarwal Shreya , Donahue Ahna , Handorf Elizabeth , Abraham John A.
Published: December 2021

Background:

Whether arthroscopic or open surgical management for diffuse-type tenosynovial giant cell tumor (D-TGCT) of the knee is associated with a lower rate of recurrence is unknown.

Methods:

PubMed, Scopus, Web of Science, Cochrane, and EMBASE were searched on December 3, 2020. Retrospective studies that reported on recurrence rates for arthroscopic versus open management of D-TGCT were included. A total of 16 studies evaluating 1143 patients with D-TGCT of the knee were included (nopen = 551, narthroscopic = 350 patients, and narthroscopic/open = 23 patients). Random-effects meta-analyses were used to summarize and compare the reported recurrence rates, stratified by approach and overall recurrence. The meta-analysis was registered with PROSPERO.

Results:

The recurrence rate per year (incidence) for arthroscopic procedures was 0.11 (95% CI 0.08 to 0.16, P < 0.0001) and for open procedures was 0.07 (95% CI 0.04 to 0.13, P < 0.0001). There was a 1.56 times (95% CI 1.04 to 2.34, P = 0.0332) increased risk of recurrence when treating D-TGCT of the knee with an arthroscopic approach. When evaluating only the subset of studies that had data for both arthroscopic and open approaches, the incidence rate per year for arthroscopic procedures was 0.17 (95% CI 0.11 to 0.27, P < 0.0001) and for open procedures was 0.11 (95% CI 0.06 to 0.19, P < 0.0001). The rate of overall complications was 0.04 (95% CI 0.01 to 0.08, P < 0.0001).

Conclusion:

Arthroscopic surgical management of D-TGCT of the knee in our study resulted in a 1.56 times risk of recurrence as compared with the open approach. The percent of overall complications was minimal.
Anterior Dens Screw Fixation for Traumatic C1-2 Lateral Subluxation With 3-Part Fractures of the C2 Axis (Dens, Lateral Mass, and Hangman Fractures): A Case Report
Authors: Chang Dong-Gune , Ko Jong-Hyun , Park Jong-Beom , Ju Gang-Ik
Published: December 2021

Introduction:

To report the first case of traumatic C1-2 lateral subluxation with three-part fractures of the C2 axis (dens, lateral mass, and hangman fractures) that was successfully treated with only anterior dens screw fixation.

Methods:

A 56-year-old man was admitted to the hospital complaining of neck and left arm pains caused by a pedestrian traffic accident. Radiologic examination revealed traumatic C1-2 lateral subluxation, type 3 dens fracture (Anderson and D'Alonzo classification), fracture of both C2 lateral masses, and type 1 hangman fracture (Levine and Edwards classification).

Results:

Preoperative closed reduction of the C1-2 lateral subluxation was successfully achieved by skull traction using a Gardner-Wells tong. The patient underwent anterior dens screw fixation for type 3 dens fracture with posterior angulation. At the 2-year follow-up visit, good reduction of traumatic C1-2 lateral subluxation and solid fusion of all three-part fractures of the C2 axis were achieved with full range of motion and stability at the C1-2 joint. In addition, notable improvement of neck and left arm pains was achieved.

Discussion:

Preoperative closed reduction and anterior dens screw fixation can be considered as a less invasive and motion-preserving surgery for traumatic C1-2 lateral subluxation with three-part fractures of the C2 axis.
Theoretical and Experimental Investigation of Shock Wave Stressing of Metal Powders by an Explosion
Authors: Buzyurkin Andrey E. , Kraus Evgeny I. , Lukyanov Yaroslav L.
Published: December 2021

Joint theoretical and experimental investigations have allowed to realize an approach with use of mathematical and physical modeling of processes of a shock wave loading of powder materials. Hugoniot adiabats of the investigated powder have been measured with a noncontact electromagnetic method. The mathematical model of elastic-plastic deformation of the powder media used in the investigation has been validated. Numerical simulation of shock wave propagation and experimental assembly deformation has been performed
Numerical Evaluation of the Effect of a Surface-Active Component on the Convective Mass Transfer During the Metal Surface Melting by the Laser Impulse
Authors: Popov Vladimir , Kovalev Oleg , Smirnova Elena , Tsivinskaya Yuliya
Published: December 2021

Under consideration is a mathematical model of the alloying process of the metal surface by the pulsed laser radiation. The dependence of the surface tension on the surface-active impurities in the melt is analyzed. The numerical simulation enabled to determine the possibility of development of flows and distribution of the alloying material into the metal
Viscosity of the Water Dispersions Containing Nanodimensional Silica Powders
Authors: Syzrantsev Vyacheslav , Bardakhanov Sergey , Lysenko Vladimir
Published: December 2021

The dependences of dynamic viscosity of the dispersions containing nanodimensional silica powders, on concentration, the size of particles and a specific surface of powders are received. Comparison of such dependences for the nanopowders received by two different methods is carried out, and the reason of different extent of influence various by origin powders on viscosity of dispersions is proved
Increasing of the Signal-To-Noise Ratio in Precision Spectroscopy
Authors: Baklanov Evgeny , Kurbatov Aleksandr
Published: December 2021

Is considered the possibility of increasing the signal / noise ratio in one of the main methods of laser spectroscopy without Doppler broadening – the method of saturated absorption. The colliding beam of laser radiation in a multimode regime is expected to be used. Interaction of counter propagating modes with different frequencies will increase the number of gas atoms effectively interact with the field and, consequently, the value of a narrow resonance line shape. It is shown that the photon noise, which is essentially unavoidable, signal / noise ratio can be increased in a time where – the number of modes. For other noise (power fluctuations of the radiation, noise, photo detector, etc.) the magnitude of the signal / noise ratio may increase again
Automated Stand for Measurements of Electrostatic Beam Position Monitors Parameters
Authors: Bekhtenev Evgeny , Karpov Gennadiy
Published: December 2021

A stand for measurements of the electrostatic beam position monitors (BPM) parameters is described. BPM parameters are measured with help of movable antenna modeling the charged-particle beam. Moving of the antenna is performed on two orthogonal directions with help of stepping motors. Full automation facilitates the measurements of BPM coordinate grid with high position resolution. Stand electronics allows BPM parameters measurements with high accuracy. Measurements at the stand performed with BPMs have demonstrated repeatability of the measurements results at level of 10–15 microns what satisfies all requirements to stand. The stand described in the paper was used for quality control of electrostatic BPM production
Agro-climatic onset of cropping season: A tool for determining optimum date of sowing in dry zones of southern Karnataka
Authors: LINGARAJ HUGGI  , H.S. SHIVARAMU  , M.H. MANJUNATAHA  , D.V. SOUMYA  , P. VIJAYA KUMAR  , MANOJ M. LUNAGARIA
Published: December 2021

The study was conducted to analyse the rainfall pattern of dry farming zones of Southern Karnataka to arrive at proper date of sowing by considering parameters like threshold rainfall (20 mm), threshold dry day (2.5 mm) and threshold dry spell period (10 days) as a main defining parameters for decision making in sowing of major crops (finger millet, pigeonpea, groundnut, etc.). In all the three zones, the agro-climatic onset of cropping season was earlier as compared to meteorological onset (June 1st week) due to bimodal distribution of rainfall having its peaks in May and September month. In Central Dry Zone, Southern Dry Zone and Eastern Dry Zone, fourteenth June, thirteenth June and twentythird May were the agro-climatic onset dates (average of all stations in each zone), respectively. Station wise analysis of the rainfall revealed different agro-climatic onset dates. Ninth May in central dry zone, eighth May in eastern dry zone and fifth May in southern dry zone were the earliest onset dates. These variations in between zonal and station specific onset dates were due to spatio-temporal variations in rainfall. Therefore, advancements in sowing of crops based on the agro-climatic onset should be taken into account for betterment of crop production.
Eye temperature, an indicator for stress levels in young buffalo bulls – A case study of micro-environment modification
Authors: KOTRESH PRASAD CHIKKAGOUDARA  , PAWAN SINGH  , DEEPANDITA BARMAN  , CAROLINA POTSHANGBAM  , NINAD BHATT  , SOHAN VIR SINGH  , SURENDER SINGH LATHWAL
Published: December 2021

The present study was undertaken with an objective to determine diurnal changes of the eye temperature of buffalo young bulls under different shelter management to determine the effect of heat stress. Twenty four buffalo bulls were randomly divided into two groups, each group comprising of 12 animals based on age (16–18 months) and body weight (Control = 301 ± 8.24 kg and Treatment = 311.45 ± 6.24 kg). The control group was housed under normal management practices followed, and the height of the shed was 10 ft. and width was 12 ft. with concrete floor. Whereas, the treatment group was housed in shed having 15 ft. height and 25 ft. width along with rubber mat as flooring and the total area provided for each animal in both the groups was 45.96 sq. feet. They were also provided with dairy fans and mist cooling in day time to ameliorate the heat stress. The thermal humidity index (THI), floor and roof temperature variation of the shed was recorded. The eye temperature of bulls was measured to evaluate the effect of different housing on the animals’ thermal status under hot dry summer conditions.Results revealed that the THI of treatment shed was significantly (P< 0.01) lower than the control at different times. The floor and roof surface temperature of the treatment shed was significantly (P<0.05) lower than the control shed. Diurnal patterns of eye temperature measured in both the groups showed increased eye temperature in control group bulls compared to treatment group. The eye temperature at 7.00 hrs was similar in both groups, whereas it was highly significant (P<0.01) at 13.00 and 19.00 hrs. The heat stress in the buffalo bulls was exhibited by increased eye temperature. Thus, the variation in the eye temperature can be effectively used as an indicator of heat stress and the dairy fans and mist cooling along with rubber mat flooring can be utilized to ameliorate the heat stress in the buffalo bulls.
Forecasting Helicoverpa armigera (Lepidoptera: Noctuidae) larval phenology in pigeonpea and chickpea crops using growing degree days
Authors: B. KIRAN GANDHI  , S.K. SINGH  , KRISHNA KUMAR  , S. VENNILA  , Y. SRUJANA  , ARTI KATIYAR  , N.P. SINGH
Published: December 2021

Gram pod borer, Helicoverpa armigera is a serious insect pest of pigeonpea and chickpea crops, responsible for huge economic losses. Timely forecasting and subsequent sensible management practices of H. armigera would save the crops from economic damage. In the present study, H. armigera larval incidence data was recorded from sixteen pigeonpea and chickpea growing locations (Maharashtra, India) for three seasons (2015, 2016 and 2017). Observed accumulated GDD (from 40 SMW to 7 SMW) revealed, H. armigera completed one generation in 29 days to develop 4 generations across the locations and seasons. After accumulating 86GDD (40 SMW) and 62 GDD (43 SMW), larval ‘biofix’ (initial incidence of larvae) was started in pigeonpea and chickpea, respectively. Logistic regression model estimated accumulated GDD required by H. armigera larvae to reach ETL in pigeonpea (629 GDD) and chickpea (378 GDD), which was same as observed accumulated GDD. Statistical criteria viz., Adjusted r2, AIC and BIC projected logistic regression model as a better performer in most cases. The geographically unique models developed based on biofix and accumulated GDD in this study can be used for timely advisories and sustainable management of H. armigera in pigeonpea and chickpea crops after field validation.
Ilmatieteiden vaiheita ja vaikuttajia Suomessa
Authors: Nevanlinna Heikki
Published: December 2021

Suomessa harjoitettu ilmatieteellinen tutkimus ja havaintotoiminta sai alkunsa jo Turun Akatemiassa 1700-luvulla. Varhaisista alan tutkijoista tärkein oli Helsingin yliopiston fysiikan professori G. G. Hällström (1775–1844). Merkittävä tapahtuma oli magneettismeteorologisen observatorion (nykyisin Ilmatieteen laitos) perustaminen vuonna 1838. Observatoriossa tehtiin laajamittaisia havaintoja säästä ja magneettikentän vaihteluista kuten muissakin vastaavissa observatorioissa Euroopassa 1800-luvulla. Observatorion johtajana toimi fysiikan professori ja runoilija J. J. Nervander (1805–1848). Laajemmat ilmatieteelliset havainnot käynnistyivät koko maassa Suomen Tiedeseuran aloitteesta vuonna 1846. Ensimmäiset yleisölle suunnatut sääennusteet aloitetiin 1880-luvulla. Myöhemmin radion ja television välityksellä laitoksen sääpalvelut tavoittivat päivittäin kaikki tietoja tarvitsevat tahot.

 

1900-luvulla Ilmatieteen laitoksen toiminta laajeni merkittävästi useille toimialoille ja siitä kehittyi kansallisesti ja kansainvälisesti huomattava tutkimus- ja palvelulaitos. Nykyään laitoksen toimintaan kuuluvat havainnot ja tutkimukset ilmakehän kaikista kerroksista aina avaruuteen asti.

 

Suomessa monet meteorologian tutkijat ovat nousseet maailmanmaineeseen kuten esimerkiksi akateemikko Erik Palmén (1898–1985) ja meteorologisten luotaimien kehittäjä Vilho Väisälä (1889–1969).
Sphinx årsbok 2018-2019
Authors: Janhunen Juha
Published: December 2021

Sphinx årsbok 2018-2019
NORMALISASI STIGMA KEPOLISIAN NEGERI IMPIAN
Authors: Siswanti Tri
Published: December 2021

Membangun citra dan reputasi positif di lembaga Kepolisian Republik Indonesia itu merupakan suatu keharusan dimana bagi Polri pada saat ini citra positif merupakan tujuan utama untuk memperoleh kepercayaan publik (public trust). Bersinggung dengan soal image dan reputasi Kepolisian Negeri Impian, sudah seharusnya lembaga ini harus serius menangani permasalahan tentang pencitraan, untuk mencapainya diperlukan usaha untuk memperbaiki citra Kepolisian Negeri Impian yang selama ini dianggap kurang profesional melalui Pengelolaan kesan dengan teknik normalisasi stigma.

Penulisan penelitian ini bertujuan:(1) mengkaji dan menganalisa Pengelolaan kesan dengan teknik normalisasi stigma,(2) mendeskripsikan Normalisasi stigma guna meningkatkan Citra di kepolisian Negeri Impian, dan (3) Mengelaborasi segala temuan dalam penelitian untuk merekomendasikan saran membangun opini baik yang dapat diterapkan dalam membangun Citra Kepolisian Negeri Impian. Peneliti menggunakan pendekatan kualitatif dengan metode fenomenologi. Teori yang digunakan adalah Pengelolaan kesan dengan teknik  Normalisasi stigma dalam prespektif Erving Goffman. Adapun teknik pengumpulan data yang digunakan dalam penelitian ini adalah observasi, wawancara mendalam dan dokumentasi. Penentuan subyek adalah personel polisi yang melaksanakan program polisi promoter sebanyak 17 orang dan masa tugasnnya diatas tujuh tahun. Metode analisis data dilakukan dengan prosedur mentranskrip, bracketing, menginventarisir pertanyaan penting, cluster of meaning dan deskripsi esensi.

Temuan penelitian ini menghasilkan teknik pengelolaan kesan dengan teknik  Normalisasi stigma bagi personel polisi yaitu: (a) dilakukan pemecatan pada anggota yang melakukan kesalahan yang berat, (b) pembinaan keagamaan terhadap personel Polri yang bermasalah dengan tingkat pelanggaran Ringan, (c) Memutasikan/memindah tugaskan personel Polri yang bermasalah dengan tingkat pelanggaran sedang, (d) Pimpinan harus bertindak tegas, (e) Pemimpin harus bisa menjadi suritauladan yang baik, (f) Memberikan penghargaan bagi personel yang berprestasi dan memberikan hukuman yang sesuai bagi personel yang bermasalah, (g) Memproses personel Polri yang bermasalah dengan berdasarkan asas keadilan dan Hak asasi manusia, (f) Melakukan revolusi mental dengan pembinaan keagamaan terhadap personel Polri yang bermasalah, (g) Bila pelanggaran ringan bisa diberikan hukuman fisik seperti lari 6 putaran, pushup 50 kali dan lain-lain, (h) Meningkatkan kesejahteraan personel Polri, (i) Memberi hukuman sesuai dengan tingkat pelanggarannya, (j) Menurunkan pangkat setingkat lebih rendah, dan (k) Melakukan revolusi mental dimulai dari level pimpinan.

Kesimpulan hasil analisis penelitian adalah: Dalam normalisasi stigma harus dilakukan pemecatan dan penurunkan pangkat bagi personel polisi sesuai dengan tingkat pelanggarannya.
Hoger beroep en cassatie in een collectieve actie op grond van de WAMCA: een blik vooruit
Authors: Hoogervorst Elselique , Klaassen Carla , Knigge Albert
Published: December 2021

Hoger beroep en cassatie in een collectieve actie op grond van de WAMCA: een blik vooruit

Aan het instellen van een rechtsmiddel in een WAMCA-procedure is weinig aandacht besteed in de parlementaire geschiedenis en literatuur. In deze bijdrage wordt een aantal vragen met betrekking tot hoger beroep en cassatie in een collectieve actie besproken, zoals welke partijen een rechtsmiddel kunnen instellen, wat rechtens is als niet door of tegen alle partijen hoger beroep wordt ingesteld, tegen welke beslissingen een rechtsmiddel kan worden ingesteld, welke complicaties tussentijds hoger beroep meebrengt en of de bijzondere procedureregels van titel 14A Rv ook in hoger beroep en cassatie moeten gelden. Geconcludeerd wordt dat nadere wetgeving gewenst is.
Intervenção dos Estados Unidos na política local de Pernambuco através do acordo de educação da aliança para o progresso (1961-1964)
Authors: Betfuer Leonardo Laguna
Published: December 2021

O presente artigo analisa o uso político da Educação feito pelos Estados Unidos, através da Aliança para o Progresso, para interferir na política do estado de Pernambuco. Isso foi feito por meio da assinatura de um convênio de Educação com o governador Cid Sampaio (UDN), com o objetivo de favorecer o seu governo e ingerir nas eleições estaduais de 1962. Reportagens da época levavam o governo dos Estados Unidos a crer que a região Nordeste e Pernambuco, especificamente, eram locais perigosos devido a pobreza e as forças políticas e sociais que disputavam o poder. Sugestionada pela Revolução Cubana (1959), a administração Kennedy (1961-1963) lançou a Aliança para o Progresso, um programa de ajuda econômica para desenvolver a América Latina, apoiar regimes democráticos, e promover a melhoria da qualidade de vida da população, contra a subversão comunista. Aos olhos dos Estados Unidos, as eleições para o governo do estado de Pernambuco entre João Cleofas (UDN) e Miguel Arraes (PST) metaforizaram um conflito entre liberdade e comunismo, respectivamente. Após a vitória de Arraes, os Estados Unidos passaram a dificultar o pagamento das verbas do convênio de educação e muito pouco foi feito de fato, além de propaganda política.
Editorial
Authors: Dias Elaine Teresinha Dal Mas , Bauer Carlos
Published: December 2021

Editorial referente ao volume do segundo semestre de 2021.
Teškoće u unapređenju nauke i oblikovanju sistema nauke i univerziteta kao nosioca tehnološkog razvoja u Bosni i Hercegovini
Authors: Milošević Dejan , Fetić Benjamin
Published: December 2021

Osnovna funkcija univerziteta, pored obrazovanja, je naučnoistraživački rad. Na bosanskohercegovačkim univerzitetima je naučnoistraživački rad zapostavljen. Dva su osnovna razloga za to. Prvi je nedovoljno finansijsko ulaganje u nauku i istraživanja, a drugi je nedovoljno razvijena svijest o značaju naučnoistraživačkog rada, kako u bosanskohercegovačkom društvu, tako i na samim univerzitetima. U ovom radu je ukazano na to šta je potrebno uraditi da se ova druga teškoća prevaziđe. Pored toga, analizirane su mogućnosti unapređenja nauke i oblikovanja sistema nauke na bosanskohercegovačkim univerzitetima, kako bi oni postali i istraživački univerziteti. Na naučnoistraživački rad se nadovezuju istraživačko-razvojni rad, tehnološki razvoj, saradnja s privredom i razvoj naučno-tehnoloških parkova. Ove djelatnosti su još manje zastupljene na bosanskohercegovačkim univerzitetima nego naučnoistraživački rad. U ovom radu je ukazano na načine kako prevazići te teškoće, kako bi istraživački univerziteti postali nosioci tehnološkog razvoja Bosne i Hercegovine.
Financing research and development around the world, in Southeast Europe and in Bosnia and Herzegovina
Authors: Čaušević Fikret
Published: December 2021

This paper analyses the financing of research and development, starting from the global and regional contexts and moving on to the specifics of such investment in Bosnia and Herzegovina. The first section presents an analysis of the global context and of the 10 highestinvesting countries, as well as a breakdown of the sources of such financing by sector. Based on the most recent data from UNESCO, which were for 2018 at the time of writing, South Korea and Japan invested most in research and development in relative terms, while the US and China did so in absolute terms. The second section contains a comparative analysis of investment in research and development by the countries of Central and Southeast Europe. This group is led by Slovenia, followed by the Czech Republic and Hungary. The third section is dedicated to the case of Bosnia and Herzegovina and certain factors affecting the country’s very low level of spending on research and development. The fourth section presents a number of successful examples of investment by Bosnian companies in key branches of industry where the country has achieved above-average results for the Southeast European region, as well as very good export results, as measured by the Economic Complexity and the Product Complexity indices.
Managerial Perception of Human Capital, Innovations, and Performance: Evidence from Banking Industry
Authors: Milosevic Nela , Dobrota Marina , Dmitrovic Veljko , Barjaktarovic Rakocevic Sladjana
Published: December 2021

This paper aims to examine the relationship between the managerial perception of human capital, innovations, and bank performance. We specifically sought to examine the influence of human capital on bank performance, by introducing the factors of innovation speed and quality. The study was taken in the Serbian banking industry, with the focus on the perception and the viewpoint of CEOs and general managers of different departments. We used a two-phase survey to design the questionnaire and the correlation and regression analyses to examine our hypotheses. Our findings propose that, from managers’ perspective, human capital is critical to the success of banks, and that innovation speed is more influential than its quality. The backward multiple regression model shows that human capital and innovation speed account for 67.5% of the variability of the bank performance. The findings of this research can contribute to bank management policies by revealing how to enhance bank performance by focusing on human capital and innovation agility and readiness. The proposed research model could potentially be implemented in other sectors and industries to hopefully endorse the significance of the detected relationships.
Traditional and Developing Segments of the Sharing Economy from the Point of View of Customers
Authors: Tetrevova Libena , Jelinkova Martina , Munzarova Simona
Published: December 2021

The sharing economy represents a phenomenon which is increasing in importance as time goes by, even from the point of view of less developed countries. The aim of the study is to evaluate the knowledge of traditional and developing segments of the sharing economy and their platforms and to analyse and evaluate the level of their use employing the example of customers (the younger and the older generation) in one of the post-communist countries – the Czech Republic. Data was collected on the basis of a questionnaire survey (N=614). This was processed using descriptive statistics tools. The study shows that respondents are the most familiar with forms of sharing not only from traditional segments (passenger transportation and accommodation) but also from the financial segment. The best-known platforms include Uber, Airbnb and Zonky. Platforms from traditional segments are used the most. The younger generation has better awareness, both about possible forms of sharing and also about the existing platforms. However, the study did not prove any differences in the level of use of platforms between the younger and older generation.
Contribution of Community Resilience to City’s Livability within the Framework of Sustainable Development
Authors: Surjono Surjono , Yudono Adipandang , Setyono Deni A. , Putri Jasmine C.
Published: December 2021

Lessons learned from the crisis in Indonesia prove that the concept of community resilience, together with community-based development, significantly affects the ability to fight against the crisis at the local and community levels.  In addition to improving urban livability, today’s urban development in Indonesia must also struggle to overcome various pressures due to natural disasters. Community resilience is considered a bottom-up solution to address these problems. This study aims to see how community resilience affects settlements’ livability in Malang City, one of Indonesia’s medium-sized cities. This research also analyses the relationship between resilience and livability variables to formulate prescriptive development strategies. The research used quantitative analysis by compiling and selecting data from secondary and primary sources to formulate indicators  and variables of the proposed model. Descriptive analysis and structural equation modelling were conducted using SEM-PLS. The model built from this research shows that community resilience is the main factor that shapes livability in Malang City, indicated by social life, urban environment, and economy. Important variables forming community resilience are population vulnerability, physical infrastructure, and environmental infrastructure.
Investigation of Groundwater Potential Using Remote Sensing and Hydro-geophysical Techniques: A Case Study of the Telidjene Basin (Eastern Algeria)
Authors: Hibi Amel , Gouaidia Layachi , Guefaifia Omar
Published: December 2021

The present study aims to assess groundwater potential in the Telidjene Basin located in the semi-arid part of eastern Algeria, applying an innovative approach combining both remote sensing and hydrogeophysics methods. A re-interpretation of geophysical data and vertical electrical sounding (VES) measurements were applied and calibrated with the borehole data to map the deep structures that may control the presence of groundwater and identify the geological and hydrogeological setting. Morphometric factors affecting recharge were mapped using several types of remote sensing data (SRTM DEM, Landsat-8). Thematic maps were overlaid using the multicriteria method and GIS to detect potential recharge areas. The results show that the main factors influencing recharge are fracturing and drainage density. Four potential recharge areas were identified over a 547 km2 area of the basin. 20% of the area falls in the weakest class, 32% in the weak class, 3% in the moderate, and 16% in the strongest. Furthermore, the study reveals that an alluvial aquifer with a thickness of up to 60m, spreading over the surface, along the Wadi Telijene and the alluvial soil, is deposited unconformably on Cretaceous terrain containing aquifer horizons of varying thickness and different electrical resistivities (10–150 Ωm), drawing an anticlinal structure with lithostratigraphy interrupted by a series of faults and spurs of Aptian and Triassic age. The south-western part of the basin has a high to moderate recharge and storage capacity. Its alluvial cover is directly fed by precipitation and fractured limestones deposited in a syncline outcropping on the edges forming an alluvial and carbonate bilayer aquifer. This study concluded that an integrated approach, involving recent, efficient, and inexpensive technology, such as remote sensing and conventional geophysical method, can be successfully used to identify groundwater potential in the study area.
Recrystallization Behavior of CP Ti Welds by Rolling
Authors: Yoon Byoung-Hyun , Shim Ji-Yeon , Kang Bong-Yong
Published: December 2021

Electrolytic copper foil is a thin copper film material manufactured by electroplating and is mainly used as a circuit material to transmit electrical signals in printed circuit boards of electronic products such as TVs, PCs, and smartphones. Recently, it has been widely used as a negative current collector for lithium-ion batteries, which is essential for mobile IT and electric vehicles. The electrodeposited drum material is composed of CP Ti, which exhibits corrosion resistance and has a light weight, and welding is essential for processing in the form of a drum. Therefore, when the microstructures of the base metal and the welded part differ, these differences are reflected in the surface of the copper foil, which results in poor quality. Therefore, in this study, a welding process that required a low heat input while minimizing the size of the weld was used, and the change in the grain size was studied through plastic deformation and recrystallization heat treatment of the weld structure. Following the recrystallization heat treatment after the rolling of the plasma welded specimen, it was found that the calculation results of the recrystallization heat treatment were consistent with the actual conditions of the heat treatment, and the microstructure of the weld metal became finer as the rolling reduction rate increased.
Study on the Microstructure and Mechanical Properties of Butt GMAW Al/Fe Dissimilar Joints using Pure Copper Filler Metal
Authors: Jung Ju-Hee , Park Dae-Woong , Baek Eung-Ryul
Published: December 2021

The automobile industry is required to reduce the automotive exhaust emissions and enhance fuel efficiency by reducing the weight of the vehicle body (lightweight body) and increasing the strength of the vehicle. To manufacture a lightweight body, there have been numerous studies on Al/Fe dissimilar joining globally. However, the biggest problem of those studies was the formation of the Al-Fe intermetallic compound (IMC) layer, which broke the weld metal on the Al-Fe IMC layer. Therefore, in this study, Al/Fe dissimilar joining using gas metal arc welding using pure copper (Cu) filler metal was proposed to solve the aforementioned issues. As the travel speed increased 5 to 9 mm/s, the temperature gradient and crystal cooling rate increased. This made the Al-Cu Eutectic and Hypereutectic Zone to be narrow and dendrite α-Al Zone to be wide in the Al-based weld zone (Weld Zone Ⅱ). From the travel speed of 8 mm/s, the hardness at the Weld Zone Ⅱ is lower than the under the travel of 7 mm/s. The tensile test results for fracture was observed in the Al base metal.
Particles of Light
Authors: Turner Stephen ,   Society for the Philosophic Study of the Contemporary Visual Arts
Published: December 2021

This article addresses recent science fiction films about the colonization of outer worlds, or space-steading, in the context of the longer colonial history of the frontier. Paying particular attention to Interstellar (Christopher Nolan, 2014), Serenity (Joss Whedon, 2005) and The Wild Blue Yonder (Werner Herzog, 2005), I argue that colonizing outer space is not only a race to the new frontier, but that this takes place because technologies that picture space have quickened the pulse. Through its imagining of the end of times as a reiteration of colonizing adventure, and the emptying of people from their place, the technology of film has itself produced the accident (Virilio, 2007) of an uninhabited earth. As suggested by the cinematically derived kinesis of wormholes, space wrinkles, and warp speeds, what might be left as a form of life is none other than film itself. The hyper-kinesis of film spectacle takes on a non-human life of its own, which, in science fiction film, constitutes a form of self-alienation, removing viewers from the places they actually inhabit and displacing the histories they unfold. In this way, I address what is truly cinematic about the film frontier traversed by the new space of uber-masculine adventurer-settlers.
Gender Equality: Challenges toward Efforts to Minimize Child Marriage in Indonesia during the Covid-19 Pandemic
Authors: Judiasih Sonny Dewi , Suryanti Nyulistiowati , Sudaryat Sudaryat , Yuanitasari Deviana
Published: December 2021

The practice of child marriage in Indonesia is a serious problem that must be resolved. This is a problem faced in various countries in the world. The SDG's programs include achieving gender equality and empowering women and girls, with a target to achieve the abolition of child marriage by 2030. The research method used is a social-legal approach. The purpose of this study is to find out the government's efforts in overcoming the problem of gender inequality in the age requirements for marriage in Indonesia and the application for dispensation for marriage during the Covid-19 pandemic in Indonesia. The old Marriage Law stipulates that the age of marriage for men is 19 years and for women 16 years. The government then changed this provision through Law Number 16 of 2019 concerning Marriage, in which the marriage age for men and women is the same, which is 19 years. During the Covid-19 pandemic, applications for marriage dispensation in Indonesia indicated a sharp increase. This means that the application for marriage dispensation is unaffected by the Covid-19 pandemic situation. The existence of exceptions through dispensation efforts makes the requirements for the age of marriage can still be deviated, so that gender equality, which is expected to minimize child marriages above, cannot be realized or cannot be carried out as desired.
Microencapsulation of Paraffin Wax in Melamine-Formaldehyde for use in Thermal Management Study
Authors: Pawar S.S. , Suryanarayana C. , Samui A.B.
Published: December 2021

Melamine formaldehyde microcapsules containing paraffin wax as phase change material (PCM) were synthesized. Free space was generated in-situ inside microcapsules. These were characterized by FTIR Spectrophotometer, Scanning electron microscope (SEM), Differential Scanning colorimeter (DSC), and optical microscope. It was confirmed that PCM was successfully encapsulated inside the shell material. Encapsulated PCM showed good phase change properties during heating and cooling. Enthalpy value of about 100 J/g was observed. The shape of the microcapsule, showing rough morphology is expected to help during processing and crystallization. It has been experimentally confirmed that no leakage occurs during the melting of PCM. Effectiveness in temperature control in a hot environment was also found to be satisfactory.
COVID-19’s Impact on the Student Learning Process in Rwandan Higher Education Institutions
Authors: Twesige Daniel , Gasheja Faustin , Isae Misago Kadhafi , Muvunyi Eugen
Published: December 2021

The coronavirus pandemic has not only challenged health systems, buthas also had a significant impact on education systems across the globe.This study analysed COVID-19’s impact on the student learning processin Higher Education Institutions in Rwanda. A quantitative research designwas adopted and pragmatism was selected as the research philosophy.Primary data was collected from 1 170 students in 30 institutions using aclosed-ended questionnaire. The data was analysed using descriptive andinferential statistical tools. The results indicate that the pandemic has led tochanges in the academic calendar, suspension of examinations, and final yearstudents being unable to conduct research and serve internships. Ithas also affected the quality of learning and learning from peers due tosocial distancing. Students in rural areas and those from vulnerable familieshave been worst affected.

Key words: COVID-19, learning, higher education institutions, onlinelearning, students
In vitro cytotoxicity analysis of Zizyphus spina-christi stem bark extract on human cancer cell lines
Authors:   Department of Chemistry, College of Sciences, University of Ha!il, Ha!il 55476, Kingdom of Saudi Arabia, Rajendrasozhan Saravanan
Published: December 2021

Zizyphus spina-christi (Rhamnaceae family) is an edible plant used in folk medicine. Therefore, it is of interest to report the cytotoxic effects of Z. spina-christi bark crude extract on human cell lines. Crude ethanol extract of Z. spina-christi bark was fractionated with increasing polarity (diethyl ether, chloroform, ethyl acetate and butanol fractions). The fractions were examined for their cytotoxicity against human colon cancer (HCT-116 and CACO-2), cervical cancer (HeLa and HEp-2), lung carcinoma (A-549), hepatocellular carcinoma (HepG-2), breast cancer (MCF-7) and prostate cancer (PC-3) cell lines using viability assay. Diethyl ether fraction of Z. spina-christi showed the highest cytotoxic effects among the four extracts of Z. spina-christi. The IC50 of diethyl ether fraction was 7.14, 11.2, 11.6, 15.4, 39.8, 42.2, 84.2 and 153.8 Ĵg/ml on HepG-2, A-549, CACO-2, HCT-116, MCF-7, PC-3, HeLa, and HEp-2 cell lines, respectively. Data shows that the diethyl ether fraction of Z. spina-christi showed effective cytotoxic effects in colon, lung and hepatocellular cancer cell lines.
A comparative analysis of biomass and clean fuel exposure on pulmonary function during cooking among rural women in Tamilnadu, India
Authors:   Department of physiology, Sri Balaji Vidyapeeth, Puducherry, India, Rajinikanth Sarojini K
Published: December 2021

It is of interest to document data on the comparative analysis of biomass and clean fuel exposure on pulmonary function during cooking among rural women. The study consisted of 100 biomass and 100 LPG fuel using women with no smoking habits and other related illness Parameters such as FVC, FEV1, FEV1/FVC, PEFR, FEF25-75%were obtained using the computerized spirometry to assess the pulmonary function in these subjects. The collected data were analyzed using the Student t-test method and Pearson correlation. The exposure index for biomass fuel users is 69.78±27.25 showing high exposure duration during cooking. The parameters for pulmonary functions significantly declined in FVC (42.34±13.6), FEV1 (45.55±15.98), PEFR (34.11±14.78) and FEF25-75% (45.56±23.00) for biomass fuel user. However, this is not true for FEV1/FVC ratio (107.56±16.9). The increase in PFT suggests the restrictive and obstructive patterns of pulmonary diseases. There was a negative correlation between increased duration of cooking and the value of FEV1/FVC (r = -0.2961), FEF25-75% (r = -0.3519) and PEFR (r = -0.2868). Thus, the deformation of pulmonary function due to extended exposure of biomass fuel for cooking women in rural Tamilnadu is shown using parameter features such as high exposure index, overcrowded area and improper ventilated houses.
Dynamic Classification of Plasmodium vivax Malaria Recurrence: An Application of Classifying Unknown Cause of Failure in Competing Risks
Authors: Liu Yutong , Lin Feng-Chang , Lin Jessica T. , Li Quefeng
Published: December 2021

A standard competing risks set-up requires both time to event and cause of failure to be fully observable for all subjects. However, in application, the cause of failure may not always be observable, thus impeding the risk assessment. In some extreme cases, none of the causes of failure is observable. In the case of a recurrent episode of Plasmodium vivax malaria following treatment, the patient may have suffered a relapse from a previous infection or acquired a new infection from a mosquito bite. In this case, the time to relapse cannot be modeled when a competing risk, a new infection, is present. The efficacy of a treatment for preventing relapse from a previous infection may be underestimated when the true cause of infection cannot be classified. In this paper, we developed a novel method for classifying the latent cause of failure under a competing risks set-up, which uses not only time to event information but also transition likelihoods between covariates at the baseline and at the time of event occurrence. Our classifier shows superior performance under various scenarios in simulation experiments. The method was applied to Plasmodium vivax infection data to classify recurrent infections of malaria.
Legenda aurea latina, elementos apócrifos y tradición catalana
Authors: Puche López Carmen
Published: December 2021

A study on Iacobus de Voragine’s warnings and observations about the apocryphal nature of some narrative elements within his Golden Legend. According to G. P. Maggioni's theory, most of these observations were inserted by Voragine in his second redaction of the work (LA2), and here we analyse to what extent and in what ways they are cited in the Legenda Aurea’s Catalan tradition, taking as the study’s basis the most recent edition of the Latin text (Maggion 2007) and four of the most important manuscripts of the Catalan tradition. We aim to provide new data about the textual history of the Catalan Golden Legend and its Latin model; and also, to find out to what extent the Catalan tradition was concerned with pinpointing its apocryphal material for the audience’s benefit.
“Quant alcun hom demanda d’alcuna cosa dubtosa”: el Tractat de les interrogacions de Bartomeu de Tresbens, estudi i edició
Authors: Giralt Sebastià
Published: December 2021

A first critical edition of the Tractat de les interrogacions by Bartomeu de Tresbens, from its incompletely preserved, unique manuscript copy (Ripoll, Biblioteca Lambert Mata, XXI, ff. 86r-98r), preceded by an introductory study. This insufficiently studied work, which had so far remained unpublished, was dedicated to King Pere the Ceremonious, and deals with the branch of astrology aiming to answer specific questions, mainly focusing on kingship and government matters. The introductory study analyses several aspects of the treatise: placement within the manuscript, date, structure, contents preserved and lost, as well as sources.
La tradició dels lletovaris literaris catalans: el cas de Joan Basset
Authors: Romanyà Alba
Published: December 2021

A literary electuary, lletovari in Catalan, is a poem that adopts some of the characteristics of medical recipes. Even though this term is used in many studies with naturality, the tradition of this type of poetry has not been described or studied as a whole. In this paper, the main attributes of this genre are exposed, and a provisional corpus of poems associated with it is put forward. Finally, the most outstanding work of that tradition, Joan Basset’s Lletovari, is characterised.
CONTEMPORARY METHODS OF ARTIFICIAL INTELLIGENCE IN THE FUNCTION OF WATER RESOURCES MANAGEMENT
Authors: Stevović Svetlana , Đurić Neđo , Mirjanić Slađana
Published: December 2021

The subject of the research in this paper is the artificial intelligence models through a modern methodological approach to solving complex water management problems. Fuzzy logic as new mathematics, neural networks and fuzzy expert systems open up great opportunities in simulating and solving real problems related to the division of water and water resources. When decision-makers seek optimum, in addition to technical and economic criteria, sometimes the decisive influence belongs to the low, ecology, political, territorial, social, religious or cultural criteria. The developed theoretical model was tested and confirmed by the development of an expert system for the selection of an optimal solution for the management and distribution of the water potential of the Drina River, in the zone of different entities, between the cities of Foča and Goražde. Holistic approach and synergy appreciation of all relevant criteria resulted in the fact that the solution found by the expert model was also implemented in practice, which is confirmation for the expert system developed.
ZAF, the first open source fully automated feeder for aquatic facilities
Authors: Lange Merlin , Solak AhmetCan , Vijay Kumar Shruthi , Kobayashi Hirofumi , Yang Bin , Royer Loïc Alain
Published: December 2021

In the past few decades, aquatic animals have become popular model organisms in biology, spurring a growing need for establishing aquatic facilities. Zebrafish are widely studied and relatively easy to culture using commercial systems. However, a challenging aspect of maintaining aquatic facilities is animal feeding, which is both time- and resource-consuming. We have developed an open-source fully automatic daily feeding system, Zebrafish Automatic Feeder (ZAF). ZAF is reliable, provides a standardized amount of food to every tank, is cost-efficient and easy to build. The advanced version, ZAF+, allows for the precise control of food distribution as a function of fish density per tank, and has a user-friendly interface. Both ZAF and ZAF+ are adaptable to any laboratory environment and facilitate the implementation of aquatic colonies. Here, we provide all blueprints and instructions for building the mechanics, electronics, fluidics, as well as to setup the control software and its user-friendly graphical interface. Importantly, the design is modular and can be scaled to meet different user needs. Furthermore, our results show that ZAF and ZAF+ do not adversely affect zebrafish culture, enabling fully automatic feeding for any aquatic facility.