bluuebunny/crossref_metadata_2025 huggingface dataset:
On unique stone beaches on the Arctic coast of the Kola Peninsula
Authors: Neradovsky Y. N. , Miroshnikova Y. A. , Kompanchenko A. A. , Chernyavsky A. V.
Published: April 2021

The results of studies of 11 stone beaches on the coast of the Barents Sea in the area of the Teriberskaya Bay have been presented. The studies were carried out from 2017 to 2019. As a result of the work, the structure of the beaches, their size, the composition of clastic material and the relationship with bedrocks were studied in detail. The genetic link between beaches and sea terraces has been established. Special attention has been paid to the morphology of beach clastic material, the conditions of its formation, and its role in abrasion activity. It has been shown that the clastic material of the beaches mainly corresponds to boulders equal to 100-1,000 mm, to a lesser extent to pebbles 10-100 mm, and rarely - gravel 1-10 mm. Individual boulders reach 2,000 mm. Sandy fractions in the composition of beach sediments are practically absent. The roundness of the fragments is high, semi-circular and rounded grains predominate, the most perfect shape of the rounded fragments is a biaxial ellipsoid or egg. Perfectly rounded boulders and pebbles in some areas account for up to 30 % of beach deposits. Measurements of the parameters of the egg-shaped pebbles have shown that they are close to the parameters of the "golden section" of the egg, i. e. meet the most durable form, resistant to destruction. Thus, the process of abrasion of the beach debris is directed towards their acquisition of the most energetically stable state. This suggests that the original shape of the debris contained a solid core in the form of a biaxial ellipsoid.
Geology, petrography and mineralogy of explosive breccias of Sallanlatva, Kola Region
Authors: Sidorov M. Yu. , Kozlov E. N. , Fomina E. N.
Published: April 2021

The Sallanlatva massif belongs to the group of Paleozoic alkaline-ultrabasic complexes wide spread in the Kola Region (the northwestern part of the Fennoscandian Shield). In the central part of this massif, the host ijolite and urtites contain calcite, ankerite, ankerite-dolomite and siderite carbonatites. The explosive processes that led to the formation of carbonatite breccias in the calcite and ankerite-dolomite carbonatites occurred in Sallanlatva massife in the last stages of the carbonatite magmatism. There are two types of explosive carbonatite breccias in the Sallanlatva massif: (1) glimmerite-calciocarbonatite breccias, and (2) siderite-dolomite breccias. Analysis of the mineral composition of fragments and matrix and the shape of fragments in breccias has shown that the first material to intrude into the host calcite and ankerite-dolomite carbonatites was calcite melt. After that, dolomite melt penetrated through the fracture zones, which resulted in the formation of siderite-dolomite breccias. The differences in the mineral composition of the breccia matrix suggest that the residual carbonatite melts originate from separate magma chambers. The chamber with calcite melt was located at great depth, and some captured glimmerite fragments were abraded during the melt upwelling. Silicate-dolomite melts lifted from a shallower depth; the captured fragments of siderite carbonatites retained their angular shape. Late hydrothermal processes yielded veins and caverns with Ba-Sr-P-S-Ti-REE mineralization in the breccias and host rocks.
Continuous flow electrocoagulation system for the treatment of coir industry wastewater
Authors: U Ayyappan , M.S Indu , Murickan Adithya G , J Balagopal , Kumar Arun S , K L Priya
Published: April 2021

Coir industry, a prominent industry in Kerala, uses huge amount of water and chemical reagents for its functioning. The effluent from these industries has high BOD, COD, toxic chemicals, oils and grease etc. Of the various pollutants, synthetic dyes are the most concerning. Electrocoagulation has advantages over other systems, as it doesn’t produce any secondary pollutants. In this study, a continuous flow electrocoagulation reactor is designed and operational parameters like flow rate, voltage, pH, electrolyte concentration, dye concentration and electrode orientation are optimized. The influence of these parameters are assessed by measuring colour removal efficiency (CRE) and chemical oxygen demand (COD). The optimum flow, voltage, electrolyte concentration, pH and electrode orientation were 1000 mL/hr., 8V, 1000 mg/L, 7 and parallel respectively. The optimized parameters were used for performance evaluation of the system in treating coir industry wastewater. Under these optimized conditions, colour removal efficiency, turbidity, pH, COD removal efficiency and BOD removal efficiency for the treated coir industry wastewater was found as 92.17%, 25 NTU, 8.7, 95.49%, and 92.20% respectively.
A Review on Residual Life Assessment of Plain and Reinforced Concrete Members
Authors: S Ajimi , Simon Keerthy M , Raj Bharati
Published: April 2021

Under fatigue loading, concrete like quasi-brittle materials exhibit softening behaviour since an inelastic zone will be formed in front of the crack tip called the fracture process zone (FPZ). There are various toughening mechanisms that exhibiting in this region. Current design practices for reinforced concrete assumes a zero tensile strength for concrete which is actually overly conservative. In fact, concrete can bear significant tensile stress and strain. Therefore, the tension softening response of RC member should consider in the study. Under fatigue loading, strength and stiffness decrease progressively according to the maximum amplitude and the number of cycles of loading. Fracture plays an important role in failure of normally and lightly reinforced beam. Since FPZ mechanisms and fibre bridging action resist crack propagation, we have to consider these mechanisms while assessing remaining life of RC member. Fatigue failure occurs when applied load is much less than the moment capacity. Such structures susceptible to fatigue load need to be monitored and residual life is to be predicted. This paper is presenting a review on the residual strength assessment on plain and reinforced concrete. The review includes the influence of various tension-softening models in predicting the residual life of plain and reinforced concrete. A comparative study is also conducted in order to assess the residual life by considering various tension softening laws.
Comparison of Analytical Models for Seismic Induced Pounding in Buildings – A Review
Authors: Meghna V , A.S Nisha
Published: April 2021

During an earthquake, buildings will have a tendency to sway too much and when the relative displacements between the buildings become greater than their separation gap, collision occurs. This results in serious damage or sometimes destruction of the structure. This phenomenon is termed as seismic pounding. In cities, because of large number of occupants and high land values, buildings are being constructed without enough separation gap between two buildings. Many numerical models were proposed over the past few years for calculating the force of collision during pounding. In this paper, a comparative study based on efficacy of various contact models like linear spring, linear viscoelastic (Kelvin-Voigt), modified linear viscoelastic, Hertz non linear, Hertzdamp and non linear viscolestic models are carried out. In addition to this, a study on a model proposed by Wang et.al. (Wang model) to analyse low speed pounding between viscoelatic material and steel is also carried out. The results of the study indicated that, Hertzdamp model is considered to be the best model for simulating the pounding behaviour generally. But in case of low speed pounding (at range from 0.025 to 0.15m/s) Wang model is best suited.
Mechanical Properties of Concrete with Coconut Shell and Fibre as Additives
Authors: K.R Bindhu , B Abiya , Haneef Hasna , David Jinu , Joseph Justin Mathew
Published: April 2021

Sustainability is a key in modern construction scenario. Even when the construction industry underwent a revolution in terms of equipment and materials used, the resultant impact on environment skyrocketed. This leads to the adoption of more sustainable approaches in construction like using coconut byproducts such as coconut fibre and shell as additives in concrete. Coconut fibre is abundantly available material which makes it a viable reinforcement material in concrete and the same goes for coconut shell which can be used as a partial replacement for conventional aggregate. This can further act as a new source of income for the coconut producers who get the benefit of the new demand generated by the construction industry. It is also an effective method of disposal of coconut husks and shells and thus reduces their negative impact on the environment. This project aims at studying the variation of strength of coconut fibre reinforced concrete (CFRC) with different percentages of coconut fibre (0.5%, 1%,1.5% and 2% by weight of cement), coconut shell aggregate concrete by replacing coarse aggregate with different percentages of coconut shell ( 15%, 30% and 45%) compared with that of conventional concrete. The optimum percentage of both fibres to be added and coconut shell to be used is determined by analyzing the strength aspects such as flexural, compressive and tensile strength. This project also includes the investigation on the mechanical properties of CFRC with coconut shell aggregate by incorporating coconut fibre and shell together in concrete matrix.
A Suitability Study of Using Crushed Fluorescent Lamp Waste as Fine Aggregates
Authors: Joshy Hanna C. , Ali K Mansoor , Z Rameez , S Sarath , K. P Ramaswamy
Published: April 2021

Fluorescent lamp wastes are one of the discarded electrical devices. These lamp wastes pose serious health concerns, and require extreme care in its disposal to avoid any adverse impacts. Also, with the widespread use of energy efficient LED lamps for lighting purposes, environmental concerns related to disposal of used mercury containing fluorescent lamps have become progressively important. This paper explores the possibility of replacement of fine aggregates in mortar with different proportions of fluorescent lamp wastes in order to find the optimum percentage of replacement to get better properties. Fluorescent lamp wastes were collected and crushed to the grading of fine aggregates. Compressive strength and bulk density of mortar cubes with 0%, 25%, 50%, 75% and 100% replacement of fine aggregates with fluorescent lamp wastes were evaluated after 7 days of initial curing. The compressive strength and bulk density of mortar was found to be decreasing with increasing percentage of lamp waste added. The replacement of fine aggregate by 25% lamp waste has greater strength compared to other proportions. Bulk density was found to be lesser at higher replacement levels and can be tried in producing light weight mortar. The utilization of lamp waste in mortar/concrete is a noble attempt in reducing the negative impact of lamp wastes on the environment
A Review on Studies Based on Vehicle Stability and Safety on Rural Horizontal Curves
Authors: Remya Y K , Jacob Anitha , Subaida E A
Published: April 2021

All over the world India bangs the top most position in crash deaths. Nearly 1.2 lakh people die every year on Indian roads. Crashes involving rolloverand lateral skidding are now responsible for almost 1/3 of all highway vehicle occupant fatalities. So, rollovers and skidding are more serious than other types of crashes. One of the major reasons for such incidents is vehicle instability at curves due to its inconsistent geometric design. This necessitates a review on current design guidelines followed in India. Many researchers have pointed out drawbacks of current design approach and a few have identified various influential factors which are significant in curve design to reduce rollover and lateral skidding. When some researchers conducted field studies to measure vehicle stability at selected curves, some carried out computer simulations. There are efforts to incorporate vehicular characteristics in curve design which is much appreciable. This paper aims to project efforts made by researchers to reduce vehicle instability at horizontal curves. Moreover, gaps in these research works and scope for further research are highlighted.
Evaluation of Dispute Prone Areas in Construction Projects
Authors: Noushad Manu , Thomas Anu V. , K. P Ramaswamy
Published: April 2021

Construction projects experience claims and disputes due to increased complexity of contract documentation, which subsequently affects the cost performance of projects. Majority of the previous studies on disputes and cost overrun have mainly focused on finding the causes of cost overrun or disputes in the industry. Identification of dispute prone areas and the associated range of cost overrun due to the disputes are less explored. Previous research findings indicate that the various factors resulting in cost overrun itself are the causes of disputes. It is necessary to understand, assess and take appropriate actions for increasing the predictability of claims and disputes in order to improve the cost performance of construction projects. In this study, an attempt is made to identify and prioritize the dispute prone areas in Indian construction projects by analytical hierarchy process (AHP).
Keynote Speech: How Can We Change Our Earth to be A Better Place?
Authors: Shim Simon
Published: April 2021

Engineers often say we contribute to solving a problem. Sometimes we may cause a problem. The solution in the old day may be a problem in the present. In past decades, engineers have developed various structural systems and technologies, that have accelerated massive construction, causing excessive CO2 emission worldwide. The side effect has created global warming that has been risking human habitat on the earth. It is time to rethink our Earth. The earth does not belong to any generation. The present generation should take ownership and hand it over to the next generation. Surely, we need to build an open-mindset, and acknowledge that we are not perfect, and ask more fundamental questions. How can we change our world into a better place? How can we prepare for the future?
Drought resistance of English roses varieties in the conditions of the Right-bank Forest-Steppe of Ukraine
Authors: Gordienko D. S. , Rubtsova O. L. , Buidina T. O. , Chizhankova V. I. , Rozhok O. F. , Sokolova O. A.
Published: April 2021

Purpose. To study the drought resistance of plants of English roses varieties.
Methods. Field, anatomical, biometric. The drought resistance of plants in the field was assessed according to S. S. Pyatnitsky 6-point scale (1961). The number of stomata per unit area of the leaf blade was determined using a JSM-6700F scanning electron microscope (JEOL, Tokyo, Japan). 
Results. The drought resistance of plants of English rose varieties was investigated both in the field and laboratory conditions. According to visual observations, during periods with a low level of moisture supply, leaf turgor did not decrease; therefore, the field drought resistance of all varieties was estimated at 5 points. According to the parameters of stomatal density per unit of leaf area, varieties that have the maximum and minimum values of this indicator were identified.
Conclusions. It was found that all studied varieties of English roses from the collection of the State Dendrological Park “Alexandria” of the National Academy of Sciences of Ukraine are quite drought-resistant in the field. But they differed significantly in the density of stomata per unit area. The largest average number of stomata per 0.5 mm2 (163.67±7.93 pcs.) was recorded in the variety ‘Alan Titchmarsh’, the lowest (47.67±1.94) – in ‘Charles Austin’. Comparison of data on leaf morphology of English roses and stomata density showed that varieties with smaller leaf sizes (‘Cottage Rose’, ‘Fisherman Friend’, ‘Noble Antony’, ‘Crocus Rose’) have a greater number of stomata per unit area, which indicates their high drought resistance. The data obtained from field and laboratory studies will be taken into account in the formation of recommendations on the use of roses for landscaping urban areas, where plants may find themselves in more extreme conditions than in an arboretum.
Influence of growth regulator Bioglobin on yield and quality of commercial parsnip products in the conditions of Western Forest-Steppe of Ukraine
Authors: Dydiv I. V. , Dydiv O. Y. , Dydiv A. I. , Kokhovska I. V.
Published: April 2021

Purpose. To reveal features of formation of productivi­ty and quality of commercial products of parsnip (Pastina­ca sativa L.) depending on ways of application of growth regulator Bioglobin in the conditions of the Western Fo­rest-Steppe of Ukraine.
Methods. Field, laboratory, analytical and statistical.
Results. With the introduction of the growth regulator Bioglobin, the mass of a parsnip root increased from 207 to 249 g (control – 196 g). A large mass of roots – 244 and 249 g – was observed when proces­sing seeds with Bioglobin (0.5 l/ha) + foliar fertilization in two stages and seed treatment with Bioglobin (0.5 l/ha) + foliar fertilization in three stages, which is higher than control (without treatment) for 48 and 53 g, or 20.4 and 27.0%, respectively. High yields of roots of parsnip cultivar ‘Stymul’ were obtained in 6 and 8 variants of the experiment – 53.5 and 54.7 t/ha, yield increase was 10.3 and 11.4 t/ha, or 23.8 and 26.4% in accordance. There is a strong relationship (r = 0.98 and 0.99) between yield and weight of parsnip root. Qualitative indicators of root crops (dry matter, amount of sugars and vitamin C) improved with increasing number of treatments with growth regulator Bioglobin. There is a tendency to decrease the concentration of nitrates in roots with increasing number of treatments with growth regulator. In general, the content of nitrate nitro­gen in the roots in all variants of the experiment did not exceed the threshold limit value (TLV) (400 mg/kg of raw weight).
Conclusions. An increase in the number of treatments for parsnip seeds and foliar application of the growth regulator Bioglobin ensured an increase in the mass of root crops, an increase in their yield, marketability and an improvement in the quality of commercial products. The highest yield – 54.7 t/ha of marketable root crops of parsnip variety ‘Stymul’ was obtained when processing seeds with Bioglobin (0.5 l/ha) + foliar feeding in three stages.
Osseointegration of Hafnium when Compared to Titanium - A Structured Review
Authors: Rajaraman Vaishnavi , Nallaswamy Deepak , Ganapathy Dhanraj M. , Kachhara Saloni
Published: April 2021

Aim:

This systematic review was conducted to analyse osseointegration of hafnium over conventional titanium.

Materials and Methods:

Search methodology was comprehended using PICO analysis and a comprehensive search was initiated in PubMed Central, Medline, Cochrane, Ovid, Science Direct, Copernicus and Google Scholar databases to identify the related literature. Randomised control trials, clinical studies, case control studies and animal studies were searched for osseointegration of hafnium coated titanium implants versus conventional titanium implants. Timeline was set to include all the manuscripts published till December 2018 in this review.

Clinical Significance:

Hafnium is a very promising surface coating intervention that can augment osseointegration in titanium implants. If research could be widened, includingin vivostudies on hafnium as a metal for coating over dental implants or as a dental implant material itself to enhance better osseointegration, it could explore possibilities of this metal in the rehabilitation of both intra and extra oral defects and in medically compromised patients with poor quality of bone.

Results:

Out of the 25 articles obtained from the PICO based keyword search, 5 studies were excluded based on title and abstract. Out of the remaining 20 studies, 16 were excluded based on the inclusion and exclusion criteria of our interest and finally, 4 were included on the basis of core data.

Conclusion:

This systematic review observed hafnium metal exhibited superior osseointegration than titanium. Owing to its biocompatibility, hafnium could be an alternative to titanium, in the near future.
Awareness and Utilization of Bulk-Fill Composites among Dental Practitioners in Saudi Arabia
Authors: Nassar Hani M. , Abou Neel Ensanya A.
Published: April 2021

Objective:

The aim of this study was to assess the knowledge and utilization of Bulk-Fill (BF) resin composites among dental practitioners in Saudi Arabia.

Materials and Methods:

An online survey was distributed through Twitter, Instagram and WhatsApp applications among dentists in Saudi Arabia. A 31-item questionnaire covering personal data, general knowledge and utilization of BF composites was used. Responses were collected and analyzed for trends. A knowledge scale was developed based on answers with specific weight for each correct answer provided by the participants. A score of ≥ 50% was considered as a satisfactory knowledge level for participants. Statistical analysis was conducted using One-sample Z- and Chi-square tests followed by Bonferroni correction at 0.05 significance level.

Results:

The total number of participants of the survey was 183, of which 41.5% had some knowledge and utilized BF composites in their practice. Only 9.84% of the participants score ≥ 50% on the knowledge scale. A significantly low proportion recognized accurately the compositional difference between BF and conventional resin composite as well as the minimum irradiance values needed for proper polymerization of BF. There was no effect for gender or years of experience on the knowledge or utilization of BF materials (p-value = 0.172).

Conclusion:

The proportions of practitioners with adequate knowledge and utilization of BF materials were very low. Additional focus must be provided in order to expose graduating dentists to advances in resin composite formulations.
Performance of Bioceramic-based Root Filling Material with Artifact Reduction Properties in the Detection of Vertical Root Fractures Using Cone-beam Computed Tomography
Authors: Bahmani Ali , Karkehabadi Hamed , Shokri Abbas , Farhadian Maryam
Published: April 2021

Introduction:

In Cone-beam Computed Tomography (CBCT) images, metallic artifacts by root filling materials reduce the quality of images. It seems that bioceramic sealers produce fewer artifacts than gutta-percha. In this situation, the possibility of VRF detection could increase, and therefore, flap and exploratory surgery would not be needed. The purpose of this study was to evaluate the performance of a bioceramic-based root filling material in the detection of Vertical Root Fractures (VRF) in CBCT imaging.

Materials and Methods:

This study was conducted at the dental school from March to August 2019, and 100 healthy human mandibular premolar teeth were obtained and randomly divided into two equal groups. The teeth were filled with either AH26 and gutta-percha or bioceramic root filling materials. VRF was induced on half of the decoronated teeth in each group using a Global Testing Machine, and the others were considered control. CBCT imaging was performed by the Cranex 3D machine. Comparisons of the 2 groups were made using the Mann-Whitney test.

Results:

There was a significant difference between the two groups of bioceramic and gutta-percha in the measured indices, including sensitivity (P=0.017), specificity (P=0.018), positive predictive value (P=0.018), negative predictive value (P=0.018), and accuracy (P=0.011). The Area Under Curve (AUC) also showed a significant difference between the two groups (P=0.011). According to Kappa test results, no significant difference was obtained between the findings of the two observers.

Conclusion:

Different root filling materials showed a different extent of artifact in CBCT images. Bioceramic root filling material induces fewer artifacts in CBCT images, and the diagnostic value of VRF in CBCT images in the root canals filled with it is greater than those filled with AH26 and gutta-percha.
Kualitas Silase Tebon Jagung (Zea mays L.) dengan Penambahan Berbagai Bahan Aditif Ditinjau dari Kandungan Nutrisi
Authors: Mustika Lisa Mufida , Hartutik Hartutik
Published: April 2021

Penelitian ini menggunakan berbagai aditif dalam proses pembuatan silase tebon jagung (Zea mays). Tujuan penelitian ini adalah mengevaluasi penggunaan bahan aditif terhadap kandungan nutrisi silase tebon jagung. Bahan yang digunakan adalah tebon jagung, bekatul, pollard, molases, dan tepung gaplek. Metode penelitian yang digunakan adalah uji laboratorium dengan menggunakan Rancangan Acak Lengkap (RAL) tersarang yang terdiri dari dua faktor yaitu jenis bahan aditif yang digunakan dan level penggunaannya dalam pembuatan silase. Variabel penelitian terdiri dari kandungan nutrisi meliputi Bahan Kering (BK), Bahan Organik (BO), dan Protein Kasar (PK). Data dianalisis dengan analisis ragam dan apabila terdapat perbedaan yang signifikan dilanjutkan analisis Uji Jarak Berganda Duncan (UJBD). Hasil penelitian menunjukkan bahwa penambahan bahan aditif yaitu bekatul, pollard, molases, dan tepung gaplek mampu meningkatkan kualitas silase tebon jagung, namun perlakuan yang terbaik adalah penggunaan pollard dengan level optimal 10%.
PENGARUH MOBILE BANKING TERHADAP PROFITABILITAS BANK DI BURSA EFEK INDONESIA
Authors: Imamah Nur , Ayu Safira Dinda
Published: April 2021

This study aims to determine the impact of mobile banking on bank profitability in Indonesia. The research sample consisted of 27 banks listed on the Indonesia Stock Exchange during 2015-2018. This study uses the dependent variable-return on assets (ROA), return on equity (ROE) and net profit margin (NPM), independent variable-mobile banking (m-banking), and control variables. This type of research is explanatory research by using panel data regression analysis or ordinary least square (OLS) method. The findings from the random effect model or generalized least square in this study are that mobile banking has a positive effect but statistically insignificant on ROA, ROA, and NPM. This implies that mobile banking in Indonesia can increase the profitability of banks by further increasing various digital innovations.
PENGARUH JUMLAH PERCEPATAN RESTITUSI PAJAK PERTAMBAHAN NILAI TERHADAP PENERIMAAN PAJAK PERTAMBAHAN NILAI (Studi pada Kantor Pelayanan Pajak Pratama Malang Utara)
Authors: Warih Anjarwi Astri , Kharisma Linda
Published: April 2021

The Accelerated of Value Added Tax Restitution is Indonesian government’s policy to a preliminary refund of value added tax overpayment. The simplification or the acceleration of the provision of restitution is done without strict examination and long process, but by simple research. Accelerated restitution policy is given to the Taxpayer who fulfills certain requirements (certain amount of restitution as mentioned above), certain criteria (Taxpayers who comply) and they are low risk Taxable Entrepreneurs that determined by the Minister of Finance. The Acceleration of Value Added Tax restitution is expected to reduce the cost compliance because the provision of restitution is done without examination and it is hoped that this policy could increase cash flow and liquidity of the economy. The research’s purpose is determine to impact the number of acceleration of value added tax restitution to the acceptance of value added tax. The type of research is explanatory research with a quantitative approach. The research’s data is secondary data that obtaine from the Pratama Tax Office Malang Utara. The research’s data is time series data during the periode of April 2018 – November 2019. The data analysis technique on the research is a simple regresi linier analysis. The results of this research is variable number of acceleration restitution on value added tax impact and significant for the revenue value added tax in the Pratama Tax Office Malang Utara. The value of R Square earned is 0.374 which means that the number of accelerated restitution of value added tax has an impact on the variable revenue of value added tax is 37.4%.
PENGGUNAAN OJEK SYARIAH SEBAGAI MODA TRANSPORTASI MUSLIMAH URBAN: MEREK ATAU RELIGIUSITAS?
Authors:   Universitas Brawijaya, Samira Bafadhal Aniesa
Published: April 2021

The increasing need for travel in the local area of the house (staycation) such as shopping, culinary, health and education tours have encouraged the use of various modes of public transportation in urban communities. In the midst of these conditions, Muslimah's need for public transportation that meets the principles of sharia values and is safe from harassment and urban crime, OJESY is here as the first and only sharia motorcycle taxi for women in Indonesia. This study analyzes whether Muslimah consumers choose to use OJESY services because of the sharia brand offered by OJESY or because of consumer religiosity. The respondents of this study were 116 Muslim women using OJESY in Malang City, East Java. By using multiple regression the results of this study indicate that both the brand of sharia and religiosity show a significant and positive influence on customer decisions to use Islamic motorcycle taxi services, but religiosity is the main stimulus so spiritual-driven plays an important role in Muslimah decisions to use public transportation while maintaining the Islamic values it adheres to.
EARNINGS QUALITY: PRAKTIK DAN TELAAH KASUS GARUDA INDONESIA
Authors: Bhakti Utami Rachma , Ary Kartikasari Dinar
Published: April 2021

Earnings are the critical indicators of a company's financial performance. Investors' investment decisions can be taken, predicting the company's future growth, and even earnings can determine the unsteady in an institution's stock price. Earning quality in a company's financial reporting is a must because quality earnings are real earnings without earnings management. In 2019, the financial statements of Garuda Indonesia (GI) were quite crowded and caused polemics. The airline with the GIAA issuer code managed to record a net profit of US $809 thousand in 2018, inversely proportional to the financial statements of 2017, which lost US$ 216.58 million. This performance is quite surprising because, in the third quarter of 2018, the company still lost US$ 114.08 million. Otoritas Jasa Keuangan (OJK) also investigated this case until finally, in mid-June 2019, OJK imposed sanctions on the Office of Public Accountants that audited financial statements and imposed fines on Directors of Garuda Indonesia. This case is reminiscent of the importance of applying earnings quality to reporting a company's financial statement.
Use of Complementary and Alternative Medicine for Children with Sickle Cell Disease: Prevalence and Factors Associated with Use
Authors:   Brookdale University Hospital and Medical center 1Brookdale Plaza, Brooklyn, NY 11212, USA, Alsabri Mohammed , Viswanathan Kusum ,   Brookdale University Hospital and Medical center 1Brookdale Plaza, Brooklyn, NY 11212, USA, Castillo Fiorella ,   Brookdale University Hospital and Medical center 1Brookdale Plaza, Brooklyn, NY 11212, USA, Ghai Paridhi ,   Saba University School of Medicine, Church street, The Bottom, Caribbean Netherlands, Hamrah Maryam Hemmat ,   Saba University School of Medicine, Church street, The Bottom, Caribbean Netherlands
Published: April 2021

Sickle cell disease (SCD) is one of the most common hematologic disorders in the world. In the United States, it is the single most common genetic hematologic disorder. The burden of SCD and its complications on pediatric patients is tremendous, especially acute vaso-occlusive pain crises. Although allopathic medicine has provided numerous pain medications to treat this, they do not come without side effects and are not always effective. This review explores complementary and alternative medicine (CAM) methods of pain management available for pediatric SCD patients. A PubMed literature search was conducted, and the reference lists of shortlisted studies and review articles were screened after application of the exclusion criteria; 14 articles were used in this literature analysis. A wide range of CAM therapies exist. Common ones include praying, spirituality, and massage. Factors associated with CAM use are parental use of CAM, gender, SCD/pain severity, patient’s age, caregiver’s education level, and in some cases, financial means to access CAM methods. CAM has shown to be effective in reducing pain, patients’ depression and anxiety, analgesic use, and in increasing daily functioning. Thus, CAM has demonstrated potential in reducing pain and improving the quality of life of pediatric SCD patients. It holds great promise to be regularly encouraged by providers and employed by patients. Further research is needed on a larger scale to better study its efficacy; however, CAM use has repeatedly been associated with improved functioning and pain control.
Young Sexual Minority Adolescent Experiences of Self-expression and Isolation on Social Media: Cross-sectional Survey Study
Authors: Charmaraman Linda , Hodes Rachel , Richer Amanda M
Published: April 2021

Background

Early adolescent years are marked by pervasive self- and peer-regulation regarding gender and sexuality norms, which can affect the mental well-being of sexual minority youth. During this developmental period, social media use is also emerging as a dominant mode of communication with peers, allowing for both risk and resilient behaviors that can impact well-being.

Objective

This exploratory study aims to examine how sexual minorities in middle school use social media, who they are connected to and for what purposes, and the associations between these behaviors and mental well-being compared with their heterosexual peers.

Methods

In our cross-sectional survey study of 1033 early adolescents aged between 10 and 16 years (average age 12.7, SD 1.21 years) from 4 middle school sites in the Northeastern United States, we conducted an exploratory study comparing sexual minorities (212/873, 24.3% of sample with known sexual orientation) with their heterosexual peers (n=661), obtaining an 84.46% (1033/1223; total possible) response rate.

Results

Sexual minorities reported having smaller networks on their favorite social media website (β=−.57; P<.001), less often responded positively when friends shared good news (β=−.35; P=.002), and less often tried to make friends feel better when they shared bad news (β=−.30; P=.01). However, sexual minorities more often reported joining a group or web-based community to make themselves feel less alone (β=.28; P=.003), unlike heterosexual youth. Sexual minorities had higher averages of loneliness and social isolation (β=.19; P<.001) than heterosexual students. Sexual minorities were also twice as likely to have tried to harm themselves in the past (β=.81; odds ratio [OR] 2.24, 95% CI 1.64-3.06; P<.001) and were more likely to have symptoms that reached the Center for Epidemiological Studies-Depression definition of depression (β=.15; OR 1.16, 95% CI 1.08-1.25; P<.001). About 39.1% (83/212) of sexual minorities had no one to talk to about their sexual orientation. Sexual minorities were 1.5 times more likely to have joined a social media website their parents would disapprove (β=.41; OR 1.50, 95% CI 1.14-1.97; P=.004) and more likely to report seeing videos related to self-harm (β=.33; OR 1.39, 95% CI 1.06-1.83; P=.02) on the web than heterosexual youth.

Conclusions

Given previous reports of supportive and safe web-based spaces for sexual minority youth, our findings demonstrated that sexual minority youth prefer to maintain small, close-knit web-based communities (apart from their families) to express themselves, particularly when reaching out to web-based communities to reduce loneliness. Future longitudinal studies could determine any bidirectional influences of mental well-being and social media use in sexual minorities during this difficult developmental period.
The Effectiveness of Mobile Phone Messaging–Based Interventions to Promote Physical Activity in Type 2 Diabetes Mellitus: Systematic Review and Meta-analysis (Preprint)
Authors: Alsahli Mohammed , Abd-Alrazaq Alaa , Househ Mowafa , Konstantinidis Stathis , Blake Holly
Published: April 2021

BACKGROUND

The prevalence of type 2 diabetes mellitus (T2DM) is increasing worldwide. Physical activity (PA) is an important aspect of self-care and first line management for T2DM. SMS text messaging can be used to support self-management in people with T2DM, but the effectiveness of mobile text message–based interventions in increasing PA is still unclear.

OBJECTIVE

This study aims to assess the effectiveness of mobile phone messaging on PA in people with T2DM by summarizing and pooling the findings of previous literature.

METHODS

A systematic review was conducted to accomplish this objective. Search sources included 5 bibliographic databases (MEDLINE, Cochrane Library, CINAHL, Web of Science, and Embase), the search engine Google Scholar (Google Inc), and backward and forward reference list checking of the included studies and relevant reviews. A total of 2 reviewers (MA and AA) independently carried out the study selection, data extraction, risk of bias assessment, and quality of evidence evaluation. The results of the included studies were synthesized narratively and statistically, as appropriate.

RESULTS

We included 3.8% (6/151) of the retrieved studies. The results of individual studies were contradictory regarding the effectiveness of mobile text messaging on PA. However, a meta-analysis of the results of 5 studies showed no statistically significant effect (P=.16) of text messages on PA in comparison with no intervention. A meta-analysis of the findings of 2 studies showed a nonsignificant effect (P=.14) of text messages on glycemic control. Of the 541 studies, 2 (0.4%) found a nonsignificant effect of text messages on anthropometric measures (weight and BMI).

CONCLUSIONS

We could not draw a definitive conclusion regarding the effectiveness of text messaging on PA, glycemic control, weight, or BMI among patients with T2MD, given the limited number of included studies and their high risk of bias. Therefore, there is a need for more high-quality primary studies.

CLINICALTRIAL

PROSPERO International Prospective Register of Systematic Reviews CRD42020156465; https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=156465
Utility of a video-based mobile app as a health literacy tool for older adults living at home - The DigiAdherence study protocol (Preprint)
Authors: Nunes-Da-Silva Catarina , Vitorino André , Lemos Marta , Porojan Ludmila , Costa Andreia , Arriaga Miguel , Gregório Maria João , de Sousa Rute Dinis , Rodrigues Ana M. , Canhão Helena
Published: April 2021

BACKGROUND

People aged 65 and over are more likely to have health problems related to aging, polypharmacy, and low treatment adherence. Moreover, health literacy levels decrease with increasing age.

OBJECTIVE

To assess an app’s utility in promoting health literacy in people aged 65 and over.

METHODS

A multidisciplinary team of professionals has developed a simple, intuitive, and video-based app (DigiAdherence) with recipes, nutritional counseling, physical activity, cognitive exercise, motivation to adhere to treatment, falls' prevention, and health literacy content. A total of 25 seniors attending the Personalized Health Care Unit of Portimão or the Family Health Unit of Portas do Arade (ACeS Algarve II - Barlavento, ARS Algarve, Portugal), will be recruited. Subjects must have 65 years of age or more, own a smartphone or tablet, and be willing and consent to participate. Those who do not know how to use or do not have a smartphone/tablet will be excluded. Likewise, people with major cognitive or physical impairment as well as living in a long-term care center will also not be included in this study. Participants will have access to the application for 4 weeks and will be evaluated at 3 different timepoints. Participants will be asked about the app’s utility, expectations (before access to the app), satisfaction (after access to the app), and benefits for their health. Subjects will be assessed in a clinical interview with a semi-structured questionnaire, including questions of users’ experience, satisfaction, app’s utility, quality of life, treatment adherence and lifestyles.

RESULTS

This study is expected to start recruiting before mid-2021.

CONCLUSIONS

Since the next generation of elderly is quite digitized, information and communication technologies could potentially be used as a health literacy tool to improve lifestyles among seniors.
Современные ангионеврологические тренды медицинской помощи в случае мозгового инсульта среди населения, в том числе проживающего на временно загрязненных территориях Украины, и УЛПА на ЧАЭС: современный взгляд на проблему и собственные исследования (к 35-летию техногенной аварии на ЧАЭС)
Authors: Onopriyenko O.P.
Published: April 2021

В статье освещен инсульт как проблема мирового масштаба, его связь с тремя группами факторов риска (патогенетическими, психогенными и экологическими — загрязнение окружающей среды). В преддверии 35-й годовщины техногенной катастрофы в Чернобыле (26 апреля 1986 года) автор сравнил данные по инсульту в Украине и в Японии после аварии на АЭС «Фукусима-1» (11–12 марта 2011 года), которая привела к расплавлению активной зоны реакторов сразу на трех энергоблоках. Поднимаются вопросы оптимизации оказания специализированной медицинской помощи больным с мозговым инсультом, факторами риска инсульта. Необходимо минимизировать последствия, оптимизировать лечение, профилактику факторов риска, особенно в тех районах, где население подвергается опасности инкорпорированного радиационного поражения организма через пищевые продукты и воду. Также необходимо улучшение специализированной инсультной помощи, создание инсультных центров в областях Украины. Проведенные исследования свидетельствуют, что причин для возникновения мозговых инсультов много, и на сегодняшний день они недостаточно изучены. Особенностями клинического течения мозговых инсультов у участников ликвидации последствий аварии (УЛПА) на ЧАЭС являются развитие их в среднем в 40–49 лет и пожилом возрасте, длительный сосудистый анамнез, что характеризуется трансформацией в дебюте вегетососудистой дистонии в дисциркуляторную (пострадиационную) энцефалопатию, преобладание ишемического характера мозгового инсульта над геморрагическим, поражение преимущественно каротидного бассейна, относительная доброкачественность клинического течения, прогрессирующий характер психических расстройств, сопутствующая соматическая коморбидная патология, наличие устойчивого патоморфологического субстрата со стороны как сосудистой эндотелиальной дисфункции, так и мозговой ликворной системы. Полученная информация дополняет данные о патогенезе, клинике и диагностике мозгового инсульта у УЛПА и представляет практический интерес. Поднятые вопросы оптимизации оказания специализированной помощи в инсультных отделениях, центрах, достаточной их комплектации как кадрами, так и аппаратурой, а также вопросы последующей реабилитации становятся краеугольным камнем в преодолении эпидемии инсульта. Исходя из сказанного, сохраняется необходимость продолжения фундаментальных исследований в этой области и скорейшей разработки, внедрения научной концепции по профилактике, раннему выявлению основных модифицируемых факторов риска инсульта совместно с семейными терапевтами, специалистами узкого профиля. Надлежащее лечение инсульта, безусловно, улучшит качество жизни пациентов и их родственников.
Recuerdos de México
Authors: Dillon Mark , Torres Santiago
Published: April 2021

Reseña técnica de la película de Alfonso Cuarón, Roma, en la que el realizador asume también la cinefotografía. La historia, situada entre 1970 y 1971 en Ciudad de México, retrata, en blanco y negro, a la empleada doméstica Cleo y su relación con la familia de clase media para la cual trabaja, en el contexto de la represión estudiantil conocida como “el halconazo”.
Fomento de la lactancia materna en la universidad
Authors: García Franco Alejandra , González de la Rosa Claudia Haydée
Published: April 2021

Objetivo: evaluar el impacto de una intervención educativa que se llevó a cabo durante el segundo trimestre de 2018 con alumnos universitarios de distintas licenciaturas para mejorar su actitud respecto a la lactancia materna (LM).Diseño metodológico: es un estudio exploratorio transversal que busca comparar las actitudes hacia la LM determinadas por la Escala de Actitudes hacia la Alimentación Infantil Iowa (IIFAS, por sus siglas en inglés) entre 2 grupos, uno de ellos expuesto a una intervención educativa. Esta escala ha sido validada previamente para la población mexicana.Resultados: los alumnos que participaron en la intervención educativa mostraron una actitud más positiva hacia la LM que los alumnos que no participaron.Limitaciones de la investigación: el número de estudiantes que respondieron el cuestionario es relativamente bajo comparado con la población universitaria por lo que los resultados pueden no ser ampliamente generalizables. Pueden existir sesgos no identificables en los estudiantes que respondieron. El tipo de estudio no permite identificar cambios en las actitudes, ni identificar causa y efecto.Hallazgos: la participación de los estudiantes en intervenciones educativas que incorporan explícitamente el tema de LM puede modificar sus actitudes hacia la misma. Esto podría tener repercusiones en las decisiones que tomen al respecto a lo largo de su vida.
Evaluación de riesgo de cambio, caso de aplicación en empresa importadora
Authors: Giraldo Arcila Sindy Viviana , López Restrepo Juliana
Published: April 2021

This applied investigation had as objective to establish a shortterm financial cover to control the impact of loss on profits due to the exchange rate risk on the COP/USD ratio, in a company dedicated to the import and marketing of tires in Colombia. For the above, it was necessary to carry out a quantitative analysis between the options and forward coverage, requiring the use of the Black Scholes technique for the calculation of the premium; Likewise, it was necessary to simulate through different forecasting methods to choose the lowest RMSE error, presented as a result the time series which was used to project the future behavior of the dollar through the Risk Simulator software. Finally, it was evident that a great part of the background for the present investigation is of a qualitative type, some of the existing quantitative origin are not focused on case studies; otherwise, the results obtained allowed to demonstrate that the best coverage is the purchase of the Call in The Money ...
Análisis bibliométrico de los avances en el área de ingeniería y materiales en carreteras rurales
Authors: Osorio Gómez Cristian Camilo , Aristizábal Torres Daniel , Alzate Buitrago Alejandro , Amariles López Cristhian Camilo
Published: April 2021

part of urban environments, characterized by low traffic, by interconnecting communities located in towns and villages, allow access to the agricultural market and the design speed is less than higher-ranking routes. Rural roads are extremely important infrastructure for the social and economic development of rural communities, often located in mountainous or semidesert places, where access to basic health and education services is very complex. In this paper, a bibliometric analysis has been applied to the theme of rural roads to identify the most important trends and influences, facilitating an organized view of the peculiarities and developments in their field of research. Consequently, a total of 433 publications made between 1968 and 2020 related to the term rural roads in Scopus were identified. The 433 publications contain 878 authors, 176 journals, 41 countries or territories, and 321 institutions. From the analysis completed, four main research areas related to the rural roads...