bluuebunny/crossref_metadata_2025 huggingface dataset:
Process Design for Biohydrogen Production from Waste Materials and Its Application
Authors: Jat Baloch Muhammad Yousuf , Talpur Shakeel Ahmed , Iqbal Javed , Munir Mamoona , Baidya Purnima , Talpur Hafeez Ahmed
Published: January 2022

Biohydrogen is regarded as an attractive future clean energy carrier due to its high energy content and environmentally friendly conversion. Biohydrogen reactor is widely used in studies concerning the anaerobic co-digestion of food waste, sewage sludge, wastewater and other organic solids. Anaerobic digestion is a series of biological processes in which microorganisms break down biodegradable material (biomass or waste feedstock) in the absence of oxygen to produce biogas, which may generate electricity and heat, or can be processed into renewable natural gas and transportation fuels. This review article explains the scientific processes of anaerobic digestion process such as hydrolysis, acidogenesis, acetogenesis and hydrogenesis as well as methods to produce biohydrogen gas such as fermentation and biophotolysis for the waste management technology and sources of renewable energy and concludes with solutions that may allow anaerobic digestion to become more widely adopted throughout the developing countries to control the waste management system.
Preparation and characterization of Pomegranate for Cough Treatment
Authors: Madhukar Mr. Chate Mahesh
Published: January 2022

Abstract: Pomegranates fruits have innumerable health benefits and its implication in diseases cure have been widely recognized since ancient time. Moreover, pomegranate fruits, seeds and peels are intensively used in traditional medicine as a natural therapy. It contains numerous valuable ingredients such as flavonoids, ellagitannin, punicalagin, ellagic acid, vitamins and minerals. The principal constituents including punicalagins and ellagitannin are responsible for immeasurable health benefits due to its strong antioxidant activity. Additionally, constituents of pomegranate show health promoting effect through the modulation of physiological and biochemical pathways. Recent evidences suggested that pomegranates fruits, peels and seeds illustrate therapeutics implications in health management via inhibition of free radical effect and modulation of enzymes activity linked with diseases development and progression. In this review, we summarize the therapeutic role of pomegranate fruits, seeds and peels in the health managements based on in vitro and in vivo studies. Keywords: Pomegranates, Anti-oxidant, Anti-inflammatory effect, Heptoprotective effect, Neuroprotective effect and antimicrobial effects.
Smart Home Automated System Using Raspberry-Pi and Google Cloud Services
Authors: Chattopadhyay Disari
Published: January 2022

Abstract: This paper represents the development of an automated system based on IoT, which can mainly be used in the home and some features can also be implemented in offices, banks, or schools. The main purpose of this project is to save time and manpower along with security and convenience, using Raspberry pi. The salient features of this automated system are gas leakage detection for safety purposes, motion detection for security purposes, and controlling the home appliances as per the user’s need. The system takes command through voice as well as text as per the user’s requirements using google assistant, which further sends a response to Raspberry-Pi via Firebase for the required action. DHT22 sensor is used for the measurement of temperature and humidity, room temperature and Humidity will be displayed through Google assistant. This system consists of Python as the main programming language by default, provided by Raspberry Pi. The system will detect human presence with the help of a motion sensor i.e, whenever a person enters the room, the motion is detected and automatically an alert message will be sent to the user via Google assistant. Keywords: IoT, Raspberry-pi, Google assistant, Firebase, Python, Dialogflow, Voice Recognition.
Optimization of Wire Cut Electro Discharge Machining Process Parameters for Aluminium 6082 by using Taguchi Technique
Authors: Muley Mahesh
Published: January 2022

Abstract: The manufacturing industry is changing very drastically in all the aspect regarding the manufacturing technology as well as the quality concern as per as the quality is considered. Quality is becoming a significant trend in todays growing automobile industry. In the field of metal cutting operations, the surface roughness is becoming more dominant parameter as per as the quality of the component is considered. Electrical discharge machining is becoming a most powerful non conventional machining which is being widely used in the field of machining. Most specifically our work was conducted on the electrical discharge wire cut machining for achieving the desired surface roughness (Ra) and adequate material removal rate (MRR). The input parameter for our research work were selected as Peak current, pulse on time & pulse off time while the output parameter was selected as MRR and the surface roughness. Aluminum 6082 Grade material is used as a specimen and the research methodology implemented for the research work is taguchi and Anova. Keywords: Wire cut EDM, Taguchi, MRR surface roughness, Anova.
Smart Seat
Authors: Banerjee Swagata
Published: January 2022

Abstract: Smart Seat: When a person seats on a seat, certain amount of pressure is applied on it. If we install certain amount of piezoelectric sensor in a seat. With the help of pressure, we can generate voltage. Piezoelectric sensor is a device that uses the piezoelectric effect, to measure changes in pressure, acceleration, temperature, strain, or force by converting them to an electrical charge. Using the sensor under the seat the pressure generated by a person seated on a chair can be sensed by sensor and generate electricity. Mainly piezoelectric material that can generate a voltage proportional to the stress applied upon it. This paper is based around this process. There will be springs attached under the seat also. When pressure is applied on the spring there will be equal pressure applied on a sensor which is attached in the bottom of every spring. With this we can generate a considerable amount of voltage to use it in future by storing it in a rechargeable battery. If the pressure is more applied on the sensor, then we can generate more voltage through the process. Keywords: Sensor, Battery, Piezoelectric, Seat, pressure.
SISTEM PENGENDALIAN INTERNAL PENERIMAAN KAS (Studi Kasus Pada Cv Sekartika Jati Rencana)
Authors: Kusnia Hilaatul Mila , Anwar Achmad Syaiful Hidayat , Mudrifah Mudrifah
Published: January 2022

The aim of this study was to assess the effectiveness of the internal cash control system conducted by CV Sekartika Jati Rencana. Internal control system is a procedure used by management as a monitoring tool that every policy has been carried out by all employees. The internal control system of cash receipts is used to maintain the company's wealth, especially cash. This study analyzes the internal control system of cash receipts applied by CV Sekartika Jati Rencana and compared with the theory of internal control systems proposed by the Committee of Sponsoring Organizations (COSO). The results of this study are all internal cash control systems implemented by the CV Sekartika Jati Rencana have been effectively proven by the form that has been numbered printed, each sales document has been printed in duplicate and checking periodically. But there are some internal control systems for cash receipts that are still not effective
PEMUTAKHIRAN NILAI INDIKASI RATA-RATA DAN IMPLIKASINYA TERHADAP BESARAN PAJAK BUMI DAN BANGUNAN PERDESAAN DAN PERKOTAAN (Studi Di Kabupaten Blitar)
Authors: Sudjatno Sudjatno
Published: January 2022

Land as the object of Land and Property of Rural and Urban Tax (PBB-P2) has always changed in value from time to time. Considering the land value as the basis for the imposition of PBB-P2, the land value in a certain period needs to be updated, so the determination of the amount of PBB-P2 is in accordance with the actual land value. The purpose of this study is to determine the level of change of the Average Indication Value (NIR) before and after updating and to determine the effect of the updating NIR on the PBB-P2. This study uses a quantitative approach. The data used are primary and secondary data obtained through observation and documentation. The updating results show that the NIR and the Tax Object Sales Value (NJOP) in each Land Value Zone (ZNT) as a whole have increased, and the increase in NIR is higher than NJOP. Wilcoxon Signed Rank Test on NIR changes before and after updating show a significant increase before and after updating. The PBB-P2 determination based on land valuation with NIR results is greater than the land valuation method using NJOP. NIR is better to represent land value in accordance with prevailing market conditions
Kualitas Audit, Profitabilitas, Leverage Dan Struktur Kepemilikan Terhadap Opini Audit Going Concern
Authors: Juanda Ahmad , Lamury Thomas Fernandez
Published: January 2022

This research is aimed to find empirical evidence of the effect of audit quality, profitability, leverage and ownership structure on going concern audit opinions on manufacturing companies listed on the Indonesia Stock Exchange (IDX) in 2017 – 2019. The population of this study is 187 listed manufacturing companies. on the Indonesia Stock Exchange in 2017 – 2019. Using purposive sampling, the sample from this study became 100 manufacturing companies with sample criteria: manufacturing companies listed on the Indonesia Stock Exchange in 2017 – 2019 with complete data and no losses during the period study. This research method uses a quantitative approach with data analyzed using logistic regression. The results obtained are that Audit Quality and Leverage partially have a significant effect on Going Concern Audit Opinions in manufacturing companies listed on the Indonesia Stock Exchange in 2017 - 2019. Profitability and Ownership Structure partially have no effect on Going Concern Audit Opinions in listed manufacturing companies. on the Indonesia Stock Exchange in 2017 – 2019. Audit Quality, Profitability, Leverage, Ownership Structure simultaneously affect the Going Concern Audit Opinion in manufacturing companies listed on the Indonesia Stock Exchange in 2017 – 2019.
Analisis Pengaruh Tata Kelola Perusahaan Dan Struktur Modal Terhadap Kinerja Perusahaan
Authors: Supriyanto Supriyanto , Hendri Jhoni
Published: January 2022

This paper aims to examine the company's performance problems as measured by book or market value by analyzing the proportion of executive directors, proportion of independent directors, board size, female directors, audit committee meetings, institutional investors, and the company's capital structure. This study uses the company's assets and capital as control variables. The paper object consists of 382 companies excluding the financial sector listed on the Indonesia Stock Exchange from 2016 to 2020. The study used purposive sampling techniques in collecting the research data. Data is processed using multiple regression methods with SPSS and Eviews statistical applications. The results showed that executive directors, independent directors, female directors, audit committee meetings, and institutional investors had no significant effect on ROA or Tobin's Q. While the board size proved to have a significantly positive relationship to Tobin's Q but not significantly related to ROA. On the other hand, the capital structure proved to be significantly negatively associated with ROA but significantly positively related to Tobin's Q.
Tanggung Jawab Sosial Dan Risiko Sistematis: Efek Moderasi Dari Fleksibilitas Keuangan Dan Investasi Penelitian Dan Pengembangan
Authors: Anita Anita , Lim Lisa
Published: January 2022

The study is conducted with the aim of examining the effect of corporate social responsibility on systematic risk in companies listed on the IDX for the period of 2016-2020. This study adds financial flexibility and research and development investment as moderators which are still remain unexplored in Indonesia. This research is expected to be able to make investors consider social responsibility as a factor in making investment decisions. The data taken are stock prices, annual reports and sustainability reports which are secondary data. Data collection using purposive sampling method with certain criteria so that the number of samples in this study amounted to 43 companies. In testing the hypothesis using panel data regression analysis techniques with eviews. The results of the regression analysis show that the existence of corporate social responsibility has a significant positive effect on systematic risk. The moderating variable of financial flexibility does not affect the relationship between CSR and systematic risk. Then the research and development investment variables weaken the relationship between CSR and systematic risk. Therefore, management is expected to pay attention to R&D investment in making CSR policies. This study explains that R&D investment is one of the important roles in company sustainability.
Hospitales sustentables: partidas críticas para su construcción y el rol de la inspección técnica
Authors: Canales Pablo , Valderrama-Ulloa Claudia , Ferrada Ximena
Published: January 2022

Currently, the public health infrastructure in Chile, at its different scales, has made important advances in determining sustainability design criteria. However, it is possible to see that, during its construction, there are no standardized verification processes on sustainability aspects, and that the work of technical inspection focuses on the administrative compliance of construction contracts, rather than on checking technical aspects. This research proposes a list of critical items and activities to supervise hospital construction, to guarantee sustainable criteria in their operation. A survey was also made to professionals involved in the design, construction, and supervision of hospital construction, ranking the results with a multi-criteria methodology (AHP), which showed a preference in the thermal envelope (20%) and thermal and ventilation installations (17%). Finally, based on the weaknesses stated by the professionals, a control and monitoring process of these items and activities is proposed, redesigning the work of the Worksite’ Technical Inspector.
Dynamics of Open Quantum Systems I, Oscillation and Decay
Authors: Merkli Marco
Published: January 2022

We develop a framework to analyze the dynamics of a finite-dimensional quantum systemSin contact with a reservoirR. The full, interactingSRdynamics is unitary. The reservoir has a stationary state but otherwise dissipative dynamics. We identify a main part of the full dynamics, which approximates it for small values of theSRcoupling constant, uniformly for all timest≥0. The main part consists of explicit oscillating and decaying parts. We show that the reduced system evolution is Markovian for all times. The technical novelty is a detailed analysis of the link between the dynamics and the spectral properties of the generator of theSRdynamics, based on Mourre theory. We allow forSRinteractions with little regularity, meaning that the decay of the reservoir correlation function only needs to be polynomial in time, improving on the previously required exponential decay.In this work we distill the structural and technical ingredients causing the characteristic features of oscillation and decay of theSRdynamics. In the companion paper [27] we apply the formalism to the concrete case of anN-level system linearly coupled to a spatially infinitely extended thermal bath of non-interacting Bosons.
Dynamics of Open Quantum Systems II, Markovian Approximation
Authors: Merkli Marco
Published: January 2022

A finite-dimensional quantum system is coupled to a bath of oscillators in thermal equilibrium at temperatureT>0. We show that for fixed, small values of the coupling constantλ, the true reduced dynamics of the system is approximated by the completely positive, trace preserving Markovian semigroup generated by the Davies-Lindblad generator. The difference between the true and the Markovian dynamics isO(|λ|1/4)for all times, meaning that the solution of the Gorini-Kossakowski-Sudarshan-Lindblad master equation is approximating the true dynamics to accuracyO(|λ|1/4)for all times. Our method is based on a recently obtained expansion of the full system-bath propagator. It applies to reservoirs with correlation functions decaying in time as1/t4or faster, which is a significant improvement relative to the previously required exponential decay.
Current Prospects of Herbal STW 5 Agent in Treatment of Functional Gastrointestinal Diseases
Authors: Sheptulin A. A.
Published: January 2022

Aim. A review of current therapeutic perspectives of the herbal STW 5 medicine (Iberogast®) in functional gastrointestinal (GI) diseases.

Key points. A limited remediation in most common functional GI diseases, functional dyspepsia (FD) and irritable bowel syndrome (IBS), is conditioned by their multifactorial pathogenesis. Meanwhile, most specific medicines only target selected pathogenesis components, thus warranting a multitarget agent development. Such is Iberogast® that acts at variant components of FD and IBS pathogenesis. The article reviews the Iberogast® mechanisms of action and evaluates its treatment efficacy in FD and IBS.

Conclusion. The current evidence claims that Iberogast® provides an effective and safe treatment for FD and IBS.
Highlights of 27th United Russian Gastroenterology Week and Specialty Commission in Gastroenterology Meeting of the Ministry of Health of Russia
Authors: Sheptulin A. A.
Published: January 2022

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PENGARUH SALINITAS TERHADAP PERKEMBANGAN STADIUM AKUATIK Aedes aegypti DI LABORATORIUM
Authors: Sitorus Hotnida , Hidayat Wahyu , Salim Milana , Marini Marini , Ambarita Lasbudi Pertama , Mayasari Rika
Published: January 2022

Aedes aegypti is known as the species of mosquito that breeds in fresh water, but due to the nature of adaptive this species found in habitats containing salt. This laboratory experiment aims to find out how different concentration of salinity will affect aquatic stages of Aedes aegypti. Salinity concentrations or treatment used in this study were 0‰, 2‰, 4‰, 6‰, 8‰ and 10‰ with five replicates. The observed parameters is the number of hatched eggs and number of surviving larvae or pupa after exposed to media containing salt. The results show that salinity influence both the number of hatced eggs and surviving larvae or pupae. There were decrease of number of hatched eggs and also the surviving larva or pupa as salinity increase. Analysis of variance showed significant relationship between salinity and the number of larvae or pupae survived but not with number of hatched eggs. Dengue vector adaptation against salinity become a phenomenon that needs to be examined and related to the spread of vector in habitats containing salt as well as transmission of the virus.
Pengaruh angka harapan hidup, rata-rata lama sekolah dan pengeluaran perkapita terhadap tingkat kemiskinan pada Kabupaten /Kota di Provinsi Jambi
Authors: Hasanah Ropikatul , Syaparuddin Syaparuddin , Rosmeli Rosmeli
Published: January 2022

This study aims to analyze the development of life expectancy, the average length of schooling, expenditure per capita, and poverty level in districts/cities in Jambi Province, as well as analyze the effect of life expectancy, the average length of schooling, and expenditure per capita on poverty levels. The analytical method used is panel data regression. The results of this study indicate that. After the Chow and Hausmant test, the best model is the Fixed effect. Partially, the analysis results of the variable life expectancy and expenditure per capita significantly impact the poverty level. At the same time, the average length of school does not have a significant effect. Simultaneously, life expectancy, the average schooling size, and per capita expenditure significantly impact poverty levels in districts/cities in Jambi province
 Keywords: Poverty, Life expectancy, Length of schooling, Expenditure per capita
Analisis pendapatan pekerja sektor informal disekitar objek wisata jembatan pendestrian kawasan objek wisata menara Gentala Arasy Kota Jambi
Authors: Fathiri Syahdan , Zulfanetti Zulfanetti
Published: January 2022

The purpose of this study was to determine the socio-economic characteristics of traders around the tourist attraction of the pedestrian bridge, to determine the potential and strategies of tourism development, and to determine differences in income from the informal sector. The data used in this study is primary data consisting of interview data. The method used for this research is a field research method with observation techniques and conducting interviews, and distributing questionnaires. The results showed that the variables of age, amount of savings, number of dependents, transportation expenses, and number of tourist visits had a significant effect. However, partially the number of dependents and the number of tourist visits significantly affect the income of informal sector workers around the Pedestrian Bridge Tourism Object in the Gentala Arasy Tower Tourism Object, Jambi City.
 Keywords: Income, Informal sector workers, Tourist attraction
Analisis pengaruh pajak daerah dan retribusi daerah terhadap belanja daerah dan pertumbuhan ekonomi Provinsi Jambi
Authors: Budi Try Setyo , Rahmadi Selamet , Parmadi Parmadi
Published: January 2022

The research objective is to see and analyze: 1). The development of regional taxes, local levies, regional spending, and economic growth as seen from the value of PDRB Jambi Province during the period 2002-2018, 2). The effect of local taxes and levies on regional spending in Jambi Province during 2002-2018 and 3). The influence of local taxes and levies on economic growth in Jambi Province during the period 2002-2018. The analysis method in this study uses quantitative and descriptive analysis methods, namely development, semi-log, and double logarithmic multiple regression analysis. The research results during the years 2002-2018, obtained: 1). The average regional tax increased by 17.03 percent, the average provincial levy increased by 16.49 percent, the average regional expenditure increased by 16.04 percent, and economic growth grew by 5.76 percent. 2). Partially (individually) or collectively, local taxes and levies have a positive and significant effect on spending on the Jambi Province at α = 5% during the period 2002-2018 and 3). Partially (individually) or collectively, local taxes and levies have a positive and significant effect on economic growth in Jambi Province at α = 5% during the period 2002-2018. 
Keywords: Local taxes, Regional levies, Regional expenditures, Economic growth
Transpacific American Literature: Curriculum, Cartography, Crossover
Authors: Giles Paul
Published: January 2022

This essay considers the complications involved in constructing and delivering a university course on Transpacific American Literature. It analyses these complexities in terms of the intertextual relationship between transpacific and transatlantic literature. It also examines ways in which various forms of cartography have shaped ways in which the subject has been formulated. By focusing on the specific exampleofMaxine Hong Kingston’s narratives, this essay suggests ways in which Southeast Asia operates as a fulcrum in her work for a reverse mapping of the subject, in relation to both space and time. In this sense, it argues that transpacific American literature sheds light on the constitution of the history and geography of American literature more broadly.
"Hiroshima Sublime": Trauma, Japan, and the US Asia/Pacific Imaginary
Authors: Wilson Rob
Published: January 2022

As an ethical and aesthetic mandate for the new millenium, the Cold War repression of Hiroshima within the American political imaginaryneeds to be symbolically confronted and undoneat national as well as global levels.As Americans and as Japanese citizens of the liberal global order, we must mutually move beyond the Cold War situation of historical repression that had obtained in 1965, when novelist Kenzaburo Ōelamented, “To put the matter plainly and bluntly, people everywhere on this earth are trying to forget Hiroshima and the unspeakable tragedy perpetrated there.” However traumatic, Americans and their allies must try to remember this Hiroshima sublimeas a trauma of geopolitical dominationand racialized hegemony across the Pacific Ocean. By thinking through and re-imagining the techno-euphoric grandeur of this Hiroshima sublime, as well as representing the ideological complicity of ordinary Americans in their own sublime (rapturedby these technological forces of sublimity as manifesting and globally installingPatriot missilesas signs of theirglobal supremacy) and ordinary Japanese (citizens of the Empire of the Sun fascinatedby self-sublation into zeros of solar force) in the production of this nuclear sublime, we can begin to mutually recognize that a ‘post-nuclear’era offers new possibilities and symbolic ties between America and Japan as Pacific powers. This post-nuclear era emerges out of World War II freighted with terror and wonder as a double possibility:at once urging the globe towards annihilation andyet also towards transactional and dialogical unityat the transnational border of national self-imagining. The phobic masochism of the sublime can no longer operate in a transnational world of global/local linkages, although the technological sublimity of the Persian Gulf War had suggested otherwise, withits “sublime Patriot”missiles and quasi-nuclear landscapes lingering in the world deserts from Iraq and Afganistan to Nevada and North Korea.
Bilateral thalamic infarction following cerebral venous thrombosis in a patient with ulcerative colitis
Authors: YADAV JAYANT , Nepal Gaurav , Thapa Aakar , Jaiswal Sandip , Thapa Shreejana , Chandra Avinash
Published: January 2022

Although the risk of thromboembolism is increased in patients with
ulcerative colitis, cerebral venous thrombosis is a rare complication in
a patient with ulcerative colitis. We herein present an unusual case of
a young female with Ulcerative Colitis under treatment diagnosed with
cerebral venous thrombosis and bilateral thalamic infarction
Remdesivir for Covid-19 pneumonia in patients with severe chronic kidney disease: Case series and review of the literature
Authors: Bishawi Ahmad Al , Hadi Hamad Abdel , Elmekaty Eman , Samawi Musaed Al , Nair Arun , aboukamar mohamed , AlMaslamani Muna , Abdelmajid Alaaeldin
Published: January 2022

Remdesivir was the first antiviral agent to receive FDA authorization
for severe COVID-19 management, which restricts its use with severe
renal impairment due to concerns that active metabolites might
accumulate, causing renal toxicities. With limited treatment options,
available evidence on such patient groups is important to assess for
future safety.
An Unusual Case of Non-Reentrant Atrioventricular Nodal Tachycardia
Authors: Raphael Craig W. , Pavri Behzad
Published: January 2022

Although uncommonly encountered, dual atrioventricular nodal
non-reentrant tachycardia (DAVNNRT) is a well described arrhythmia that
can manifest in patients with dual atrioventricular nodal pathways
physiology. This arrhythmia is characterized on ECG by a single P wave
followed by two conducted QRS complexes, and on intracardiac EGMs by a
single atrial electrogram followed by two separate His deflections and
ventricular electrograms. Our case demonstrates a rare case of “triple
atrioventricular non-reentrant tachycardia” in which a patient was
found to have 3 distinct AV nodal pathways and multiple “triple fire
responses”, both on surface ECG and intracardiac electrograms.
Ученики и учителя Тенишевского училища (по школьным журналам и архивным документам) [Tenishev School: Its Instructors, Students, School Magazines and Archives]
Authors: Salman Marina
Published: January 2022

This article results from extensive archival research, and compares information found in Tenishev school magazines to the archival data concerning the school life of the corresponding period. The article’s major goal is to reconstruct life stories of Tenishev school students and the school’s instructors as meticulously as possible, and also to demonstrate the style of communication between the teachers and adolescents. It also reveals some previously unknown information concerning the life story of Tenishev School director Alexander Ostrogorskii (1868—1908). KEYWORDS: 20th-Century Russian History, Osip Mandel’shtam (1891—1938), Viktor Zhirmunskii (1891—1971), Alexander Ostrogorskii (1868—1908), Tenishev School, School Magazines, Soviet Terror, History of School Education in Russia.
О летописи поэтовой: Например, Ахматова [How to Tell a Poet’s Life Story: Akhmatova’s Case]
Authors: Timenchik Roman
Published: January 2022

This article is an attempt to expand the chronology of a poet’s life and works as a genre. It offers not to limit a poet’s biography to poem publication dates, lists of reviews, friendships, or crucial historic events, but to include such marginal texts as rumors, and even dreams—all contributing to the existence of a poet’s name in the semiosphere. KEYWORDS: 20th-Century Russian Literature, Anna Akhmatova (1889—1966), Chronology, History of Literature.
Из Именного указателя к «Записным книжкам» Ахматовой: Итальянцы [From an Index to Anna Akhmatova’s _Notebooks_: Italians]
Authors: Timenchik Roman
Published: January 2022

This article is yet another installment in the series of Roman Timenchik’s annotations to Anna Akhmatova’s Notebooks (see also three previous volumes of Slavica Revalensia). This particular installment concerns two Italians mentioned in Akhmatova’s notes: Bruno Carnevali (1924—1990) and Carlo Riccio (1932—2011). Keywords: 20th-Century Russian Literature, Anna Akhmatova (1889—1966), Annotations, Notebooks (1958—1966), In memoriam: Larisa Georgievna Stepanova (1941—2009).
Worse patient-reported outcomes and higher risk of reoperation and adverse events after total hip replacement in patients with opioid use in the year before surgery: a Swedish register-based study on 80,483 patients
Authors: Simonsson Johan , Bülow Erik , Svensson Malchau Karin , Nyberg Fredrik , Berg Urban , Rolfson Ola
Published: January 2022

Background and purpose — Recent studies indicate that preoperative use of opioids could be associated with higher rates of complications and worse patient-reported outcomes (PROs) after orthopedic surgery. We investigated the prevalence of preoperative opioid use and analyzed its influence on risk of revision, adverse events (AE), and PROs in patients with total hip replacement (THR).
Patients and methods — This observational study included 80,483 patients operated on in 2008–2016 with THRs due to osteoarthritis. Data was obtained from the Swedish Hip Arthroplasty Register, Statistics Sweden’s sociodemographic registers, the Swedish National Patient Register, and the Prescribed Drug Register. We focused on patients with ≥ 4 opioid prescriptions filled 1 year prior to THR. To control for confounding, we used propensity scores to weight subjects in our analyses. Logistic and linear regression was used for outcome variables with adjustments for sociodemographic variables and comorbidities.
Results — Patients with ≥ 4 opioid prescriptions in the year before THR (n = 14,720 [18%]) had a higher risk of revision within 2 years (1.8% vs. 1.1% OR 1.4, 95% CI 1.3–1.6) and AE within 90 days (9.4% vs. 6.4% OR 1.2, 95% CI 1.2–1.3) compared with patients without opioid treatment in the preoperative period. Patients with ≥ 4 opioid prescriptions rated 5 points worse on a 0–100 scale of Pain VisualAnalogue Scale (VAS) and 9 points worse on a generalhealth (EQ) VAS 1 year postoperatively.
Interpretation — Having ≥ 4 opioid prescriptions filled in the year before surgery is associated with a higher risk of revision, adverse events, and worse PROs after THR. Consequently, preoperative opioid treatment should be addressed in the clinical assessment of patients eligible for THR.
Continuous periprosthetic bone loss but preserved stability for a collum femoris-preserving stem: follow-up of a prospective cohort study of 21 patients with dualenergy X-ray absorptiometry and radiostereometric analysis with minimum 8 years of follow-up
Authors: Nyström Andreas , Kiritopoulos Demostenis , Mallmin Hans , Lazarinis Stergios
Published: January 2022

Background and purpose — We previously described a decrease in bone mineral density (BMD) in the calcar region 2 years after insertion of the collum femoris-preserving (CFP) stem, but the implants were stable. Now we have examined the long-term changes in periprosthetic BMD and stability of the CFP stem.
Patients and methods — We conducted a minimum 8-year follow-up of 21 patients from our original investigation. We examined periprosthetic BMD by dual-energy X-ray absorptiometry (DEXA) and implant stability by radiostereometric analysis (RSA).
Results — Between 2 and 8 years 1 stem was revised due to aseptic loosening. Between 2 and 8 years we found a 14% (95% confidence interval [CI] 9–19) reduction in BMD in Gruen zone 6 and 17% (CI 6–28) in Gruen zone 7. From baseline the reduction in BMD was 30% (CI 23–36) in Gruen zone 6, 39% (CI 31–47) in Gruen zone 7, and 19% (CI 14–23) in Gruen zone 2. Between 2 and 8 years, RSA (n = 17) showed a mean translation along the stem axis of 0.02mm (CI –0.02 to 0.06) and a mean rotation around the stem axis of 0.08° (CI –0.26 to 0.41). From baseline mean subsidence was 0.07 mm (CI –0.16 to 0.03) and mean rotation around the stem axis was 0.23° (CI –0.23 to 0.68) at 8 years.
Interpretation — There was continuous loss of proximomedial BMD at 8 years while the CFP stem remained stable. Proximal periprosthetic bone loss cannot be prevented by this stem.
model-based radiostereometric analysis (RSA) randomized control trial evaluating the stability of the cementless Taperloc hip stem: the TapHip study
Authors: Kok Ruben Y , Koster Lennard A , Kaptein Bart L , Fiocco Marta , Keizer Stefan B
Published: January 2022

Background and purpose – The Taperloc Complete hip is the successor of the Taperloc hip, aiming to increase range of motion and optimizing femoral fit with intermediate stem sizes. We evaluated whether these design changes affect fixation, and this RSA study compares 2-year migration.
Patients and methods – In this prospective, multi-arm study, 100 patients were randomized to cementless total hip arthroplasty (THA) with Taperloc Complete full profile (TCFP), Taperloc Complete reduced distal (TCRD), Taperloc full profile (TFP), or Taperloc reduced distal (TRD). Migration was measured with model-based RSA postoperatively, and after 3, 12, and 24 months.
Results – Results based on mixed-model analysis on 2-year postoperative RSA data from 74 patients showed similar subsidence (mm) in the first 3 months (mean [95% CI] TCFP 0.44 [0.20–0.69], TCRD 0.91 [0.40–1.42], TFP 0.71 [0.22–1.19], TRD 1.25 [0.58–1.91]) and stabilization afterwards. The TCFP showed statistically significantly less retroversion (°) at 2-year postoperatively compared with TFP and TCRD (mean [95% CI] TCFP: –0.13 [–0.64 to 0.38], TCRD: 0.84 [0.35–1.33], TFP: 0.56 [0.12–1.00], TRD: 0.37 [–0.35 to 1.09]).
Interpretation – As expected in successful cementless THA, RSA shows stabilization after initial subsidence. Based on these results the Taperloc Complete stem is expected to have similar long-term fixation to the Taperloc stems. The reduced distal groups have larger, but statistically non-significant, initial migration compared with the TCFP group, which could be due to implantation in Dorr B, C femur types. It may be important to consider the femur shape for choosing a full profile or reduced distal stem to minimize migration.
Implementation of Digital Literacy in Elementary Schools
Authors: Masyhura Nufaisah , Ramadan Zaka Hadikusuma
Published: January 2022

Digital literacy is one form of development in the 4.0 revolution era where we can access various desired information quickly. Of course, the digital literacy school environment impacts the learning process significantly. This study aims to analyze how the implementation of digital literacy in elementary schools. This type of research is qualitative with a research design in 4 stages: first, research focus. Second, research implementation (Observation, Interview). Third, data analysis. Fourth, the study results, the research subjects were 1 principal, 6 teachers and 6 students. Data collection techniques and research instruments include observation sheets and interview guidelines—data analysis using an interactive analysis model from Miles and Huberman. The study results show that the application of digital literacy in elementary schools is still not optimal. It is proven when conducting interviews and observations that the learning process is still teacher-centred and generally uses what app group digital literacy media is. In addition, the breakthrough about digital literacy in the school environment is still lacking, so that the implementation of digital literacy is only limited to understanding. Barriers experienced include students having difficulty understanding the material and limited internet quota. Therefore, to maximize the implementation of digital literacy in elementary schools, programs such as conducting training, manuals and digital literacy infrastructure are needed.
Problem-Based Learning Model in Classroom Management with Scaffolding Techniques on Learning Outcomes and Student Independence
Authors: Asrial Asrial , Noviyanti Silvina , Kurniawan Dwi Agus , Kiska Nurul Delima , Saputri Juwita , Damayanti Latipia , Luthfiah Qonita , Silvia Ninda
Published: January 2022

There are still many students who get scores below the average. It is because students have difficulty in learning. This study examines the effect of problem-based learning models with scaffolding techniques, the effect of independent learning on student learning outcomes, and the level of differences in learning outcomes between students who apply problem-based learning models and problem-based learning models with scaffolding techniques rather than conventional learning models. This study uses a quantitative research type with a quasi-experimental design with a 3 x 3 factorial design, using a Nonequevalent control group design (pretest-posttest). The sample in this study amounted to 77 students. The study was conducted using quantitative data obtained from questionnaires and surveys. The instrument used to collect data is a questionnaire. The techniques used to analyze the data are qualitative descriptive analysis, quantitative, and inferential statistics. The study results are significant differences between the Problem Based Learning learning model with the Scaffolding technique with the conventional learning model of student independence in learning, and student learning outcomes are dominant in the application of problem-based learning. It can be concluded that the application of the Problem Based Learning model with the Scaffolding technique obtains the best learning outcomes when compared to other learning models.
Parental Communication Increases Student Learning Motivation in Elementary Schools
Authors: Amin Alfauzan , Alimni Alimni , Kurniawan Dwi Agus , Azzahra Miftahul Zannah , Septi Sabila Eka
Published: January 2022

There is still a lack of parental communication on students' learning motivation at the elementary school level. It has an impact on the level of student learning motivation that is less. This study aims to analyze parental communication on students' learning motivation in the learning process of Islamic religious education. This type of research is a mixed-method, namely quantitative and qualitative with an explanatory design. The subjects in this study were parents and elementary students. Data collection techniques used in this study were the distribution of questionnaires and interviews. The data analysis method used is a quantitative descriptive analysis by testing the findings using apps, record results, and concluding. Quantitative description by distributing questionnaires and conducting interviews. The results showed differences and influences between parental communication and student learning motivation in Islamic religious education subjects. So, it can be concluded that parental communication on student learning motivation has been carried out very well, although not optimally. Parental communication has been done well so that students' learning motivation will also increase and impact increasing student learning discipline.
Study Analysis of Confidence Level on Slow Learner Students
Authors: Wanabuliandari Savitri , Ardianti Sekar Dwi , Gunarhadi Gunarhadi , Rejekiningsih Triana
Published: January 2022

Confidence helps to see life from the positive side and helps to find new experiences. This self-confidence has not been well embedded in slow learner students. Slow learner students have low self-confidence. One of the reasons for low self-esteem is discrimination and bullying at school. The purpose of this study was to analyze the level of self-confidence of slow learner students. This study uses a quantitative research approach. The research method used is a survey method. The respondents of this study were slow learner students in grade IV who had gone through psychological tests. The number of slow learner students is five students based on psychological tests. Data collection techniques using observation and questionnaires. This study tested the validity of the data by using the credibility test. Testing the credibility of the data is done through triangulation and using reference materials. This study uses data analysis techniques Miles and Huberman models. Qualitative data analysis was carried out by reducing data, presenting data, and drawing conclusions/verification. The result of the research is that the teacher still does not understand the characteristics of the slow learner students. Slow learners feel that the teacher does not care. Slow learners do not understand the material taught by the teacher. Slow learner students tend to be quiet and look down while studying. The self-confidence analysis shows that all students are slow learners in the category of not being confident.
The Differences in Students' Creative Problem-Solving Ability with and without Realistic Methematics Comic Video
Authors: Sipayung Tetty Natalia , Imelda Imelda , Siswono Tatag Yuli Eko , Masriyah Masriyah
Published: January 2022

Mathematics achievement of students in Indonesia is still lower than students in other countries. It is because the creative ability of students is still low. This study aimed to analyze students' creative problem-solving abilities after using realistic math comics videos. This type of research is quantitative research. A quasi-experimental study with a pretest-posttest comparison design was conducted in this study. The population of this study were all seventh-grade students of SMP, which consisted of four parallel classes. The sample was selected using a random sampling technique so that there were two classes of research samples, namely the control class sample and the experimental class sample. This study used a pretest and posttest instrument for creative problem-solving abilities. In this study, the pretest and posttest score data were normally distributed and homogeneous. Based on the research data analysis using the independent sample t-test, it was concluded that there were differences in the creative problem-solving abilities of students who were taught using real math comics videos with groups of students who were taught not to use fundamental math comics videos. So, it can be concluded that the creative problem-solving abilities of students who are taught using real math comic videos are better than those who are not taught using real math comic videos.
Integrated Thematic Oriented “Pop Up Book” Development on Thematic Learning for Lower Grade Elementary School
Authors: Rahayu Sri , Hakim Arief Rahman , Yuliana Palupi Dwi , Ladamay Iskandar
Published: January 2022

The lack of use of learning media, especially in thematic learning, causes students to experience difficulties in learning. The need for learning media development in thematic learning to facilitate students in learning. This study aims to develop Pop-Up Book media and find the location and practicality of Pop-Up Book learning media based on integrative thematic learning on Theme 8 Safety at Home and Travel. This type of research is development. The research method used is the ADDIE model. This study consisted of expert validators of learning media, content expert validators, class teachers, and students. The data collection instruments used in this study were questionnaires and expert judgment. The data used in this study is a feasibility analysis and practicality analysis. The data analysis technique used is descriptive qualitative and quantitative analysis. The study results indicate that this learning media has gone through systematic stages of development research. Based on the validation of material experts, media experts, practitioners, and students, the Pop-Up Book's quality was very good. The Pop-Up Book learning media development is feasible, practical, and attractive to be used as a learning medium in Class 2 thematic learning. The Pop-Up Book media can facilitate students in learning so that it impacts increasing student learning outcomes.
Mission Book Game: Enhancing Fifth-Grade Students’ Learning Motivation on Thematic Learning
Authors: Dwi Evayani Dewa Ayu Candra , Jampel I Nyoman , Widiana I Wayan
Published: January 2022

The lack of use of learning media in the learning process causes students to find it difficult to understand the material. This study aims to produce learning media that can increase students' motivation and activeness in the learning process. Media development in this study is guided by the ADDIE model procedure which consists of several stages, namely analysis (analyze), design (design), development (development), implementation, and evaluation (evaluate). The subject in this development research is the mission book game media to increase the learning motivation of fifth-grade students while the object in this research is the validity and effectiveness of the mission book game media developed. This development research method is a qualitative and quantitative analysis method. The data collection used is a questionnaire method with data collection instruments in the form of a rating scale by giving an assessment instrument to 4 experts, namely, 2 material experts, 2 media experts, 2 practitioner responses, and 12 students. The data were analyzed by testing the validity and reliability test of the mission book game media based on data from experts, practitioners, and students' responses. The data obtained is calculated using the mean formula to determine the average validity of the media. The average validity score of the mission book media game in terms of material experts is 4.8 with very valid criteria, in terms of media experts it is 4.4 with very valid criteria, in terms of practitioner responses it is 4.7 with very valid criteria and in terms of student response of 4.9 with very valid criteria. The motivational data analysis technique used is descriptive quantitative statistical data analysis techniques in the form of prerequisite tests and t-tests. The results of the hypothesis test showed a significance value of 0.033 which means 0.033 <0.05, so it can be concluded that there is an effect of the.