bluuebunny/crossref_metadata_2025 huggingface dataset:
Screens surrounding openings in floor slabs of public buildings
Authors: Prisadkov V. I. , Ushakov D. V. , Abashkin A. A. , Zueva A. S.
Published: July 2021

Introduction. Screens often surround openings in the floor slabs of atrium buildings to prevent the spread of fire hazards to higher floors and to improve the efficiency of smoke ventilation systems. In this article, the co-authors assess the expediency of installing screens around openings in the floor slabs and identify the best screen height values. In this article, the co-authors perform a quantitative analysis of the ability of screens to prevent the propagation of hazardous fire factors, to identify general regularities typical for a multi-level space, and to develop recommendations for the installation of screens inside public buildings. The co-authors suggest that screen height should be a solution to the following tradeoff problem: the use of screens reduces acceptable evacuation time for the floor that has screens installed and rises the evacuation time for higher floors.

Rational screen height selection algorithm. The co-authors propose the following algorithm for the two-stage selection of the rational screen height. At the first stage, the evacuation problem is resolved. As a result, evacuation completion time is determined for emergency exits. Further, acceptable evacuation time and the time needed to block emergency floor exits are identified for a particular type of a fire alarm system.At the second stage, the dynamics of hazardous fire factors in building rooms is assessed for various screen heights. As a result, the rational height of screens is established for the evacuation time to remain positive.

Conclusions. Screen height values cannot be determined in advance. Each case requires an individual approach that entails the resolution of evacuation problems and the tracking of the dynamics of hazardous fire factors in buildings that have multi-height spaces. These ideas are in line with the concept of flexible regulation of fire protection systems designated for construction facilities.
Normative and technical regulation of production facilities in the context of the upcoming revision of Technical regulation “General requirements to fire safety”
Authors: Bakirov I. K. , Valiullina R. A.
Published: July 2021

Introduction. The text of draft amendments to Technical Regulation “General requirements to fire safety” was published on January 16, 2020. Draft amendments were developed with in the framework of the“regulatory guillotine”approach. The mission of the proposed amendments was to eliminate excessive and duplicative fire safety requirements, inter alia, requirements applicable to fire safety and fire extinguishing devices that had been established by Technical Regulation of the Eurasian Economic Union (EAEU)“Оn Requirements for fire safety and extinguishing devices” (TR EEU 043/2017). The purpose of this article is to substantiate the in expediency of, or, on the contrary, the need to make the proposed amendments to Federal Law No. 123-FZ of July 22, 2008 “Technical Regulation of Fire Safety Requirements”. The body (analytical part) of the work. The proposed amendments to the regulatory legal act titled “Technical Regulations on Fire Safety Requirements” were drafted within the framework of the “regulatory guillotine” approach. In the course of the comparative analysis of effective fire safety requirements and proposed amendments the co-authors came up with recommendations for their improvement. The co-authors of the article present arguments to substantiate the inexpediency of some particular amendments, but at the same time, they support the need to make other amendments to Federal Law No 123-FZ. The co-authors comment on the proposed draft document that has twenty-eight amendments.Conclusions. Fire safety regulations must represent a single consolidated document, rather than several “fragments” available in the Technical Regulations of the Eurasian Union, Technical Regulations of All-Russian Significance and Technical Regulations of Safety of Buildings and Structures.
The accuracy and reliability of comparative efficiency assessment of portable fire extinguishers used in the process of fire extinguishing of structural components of motor vehicles and automotive finishing
Authors: Kuprin D. S. , Polyakov A. S.
Published: July 2021

Introduction. The relevance of this work resides in the need to perform an unbiased comparative assessment of fire extinguishers. The focus must be placed on the efficiency of a fire-fighting agent, as it has a major impact on the process of fire extinguishing. The purpose of this work is to confirm the applicability of a dimensionless efficiency indicator of portable fire extinguishers, assess the measurement accuracy (correctness and precision) and their statistical values.Materials and methods. The co-authors used the methodology specified in GOST R 51057–2001 applicable to the fire extinguishing of class A model fire seats. The model fire seat had samples of materials attached to its upper edge at the angles whose values were obtained using a specialized test bed. A specialized test bed was used to perform the testing and identify the sample’s inclination angles that prevented the fire extinguishing agent, applied to their surface, from streaming down or crumbling. The accuracy (correctness and precision) was assessed pursuant to the methodologies specified in GOST R ISO 5725-1–2002, GOST R ISO 5725-6–2002. The statistical significance of measurements was assessed using Student’s t-test.Results and discussion. The co-authors offer the results of the experiments aimed at the identification of an inclination angle of the fire seat surface that prevents the fire extinguishing agent from streaming down or crumbling. The results of comparative fire testing of fire extinguishers that contain quick setting foam and powder are provided. The formula of a dimensionless efficiency indicator, applicable to portable fire extinguishers, is provided, and its applicability is proven.Conclusions. The measurement accuracy assessment, performed pursuant to the methodologies, specified in the regulations, has shown the effectiveness of mean arithmetic values of all indicators applied to calculate Peo efficiency indicator. The assessment of the statistical significance of experimentally obtained values of all indicators, performed with the help of Student’s t-test, has demonstrated that the discrepancy of their mean arithmetic values is reliable and it doesn’t have a random nature. The superiority of the quick setting foam extinguisher over the powder one was proven in an experiment. The value of its Peo efficiency indicator exceeds the one of a powder extinguisher 50-fold due to the comprehensive impact made by the extinguishing agent and the construction of a fire extinguisher.
Quantum erasing the memory of Wigner's friend
Authors: Elouard Cyril , Lewalle Philippe , Manikandan Sreenath K. , Rogers Spencer , Frank Adam , Jordan Andrew N.
Published: July 2021

The Wigner's friend paradox concerns one of the most puzzling problems of quantum mechanics: the consistent description of multiple nested observers. Recently, a variation of Wigner's gedankenexperiment, introduced by Frauchiger and Renner, has lead to new debates about the self-consistency of quantum mechanics. At the core of the paradox lies the description of an observer and the object it measures as a closed system obeying the Schrödinger equation. We revisit this assumption to derive a necessary condition on a quantum system to behave as an observer. We then propose a simple single-photon interferometric setup implementing Frauchiger and Renner's scenario, and use the derived condition to shed a new light on the assumptions leading to their paradox. From our description, we argue that the three apparently incompatible properties used to question the consistency of quantum mechanics correspond to two logically distinct contexts: either one assumes that Wigner has full control over his friends' lab, or conversely that some parts of the labs remain unaffected by Wigner's subsequent measurements. The first context may be seen as the quantum erasure of the memory of Wigner's friend. We further show these properties are associated with observables which do not commute, and therefore cannot take well-defined values simultaneously. Consequently, the three contradictory properties never hold simultaneously.
ANALYSIS OF COMBINED DISKS WITH PIECEWISE THICKNESS
Authors: Koreneva Elena
Published: July 2021

The combined constructions subjected to an action of expanding loads and consisting of separate sections are examined. Each of the mentioned sections has its own rigidity. These parts may be made from the same or from the various materials. The materials can be anisotropic or isotropic, homogeneous or inhomogeneous. The constructions under study have the round scheme and they are considered as circular disks with piecewise thickness. In the places of the separate parts conjugation the disks’ thickness can be discontinuous or continuous. The analytical approach is used. The solutions are obtained in closed form and expressed in terms of Legendre functions, Legendre, Gegenbauer and Laguerre polynomials.
USING DISCRETE-CONTINUOUS APPROACH FOR THE SOLUTION OF UNSTEADY-STATE MOISTURE TRANSFER EQUATION FOR MULTILAYER BUILDING WALLS
Authors: Zubarev Kirill
Published: July 2021

Moisture regime of enclosing structures is one of the most complicated and controversial directions in construction industry. Temporary climate impact on enclosing structures and low moisture inertia of building materials lead to the situation in which it is impossible to calculate the steady-state moisture regime. Numerical methods are usually used to assess the moisture behaviour of the enclosing structures. In the current paper, a differential equation of moisture transfer is formulated. The solution of the unsteady-state equation of moisture transfer was obtained using the discrete-continuous approach. Thus, a formula which allows scientists to calculate unsteady-state moisture transfer in multilayer walls of buildings was obtained. A two-layer building enclosing structure with aerated concrete base and mineral wool insulation was calculated.
ANALYSIS AND DESIGN OF STRUCTURAL STEEL JOINTS AND CONNECTION: SOFTWARE IMPLEMENTATION
Authors: Karpilovsky Viktor , Kriksunov Eduard , Perelmuter Anatoly , Yurchenko Vitalina
Published: July 2021

The paper presents COMET software which enables to design steel structural joints widely used in civil and industrial engineering. Algorithm for designing each joint prototype has been presented as a set of operations implementing the rules for determining the interrelated values of the joint parameters. Each prototype is developed as an independent program that performs a full cycle of designing the joint and verification of the joint parameters according to the specified design codes.

Searching of unknown joint parameters has been transformed to a decision making problem based on analysis of the joint mathematical model. Automatic searching of unknown joint parameters has been implemented as a multiple targeted improvement of a certain initial joint design in order to satisfy load-carrying capacity constraints taking into account the structural and assortment-based constraints. Multiple improvement of current joint design is performed on the basis of sensitivity analysis relative to variation of governing joint parameters.
Contributions on Computer Music from the SBCM 2019
Authors: Tavares Tiago Fernandes , Schiavoni Flávio Luiz
Published: July 2021

The Brazilian Symposia on Computer Music are events that foster a rich environment for exciting interdisciplinary discussion. In its 17th edition, in 2019, the event was held in São João Del Rei, MG. This special issue presents 5 selected papers from the conference's technical program covering different research fields like sound synthesis, music information retrieval, sound systems, and digital musical instruments.
Recomendaciones nutricionales de alimentos balanceados de perros y gatos registrados en Costa Ric
Authors: Torres Vargas Mario , WingChing Jones Rodolfo
Published: July 2021

Introducción: El análisis nutricional de alimentos comerciales ayuda a optimizar su uso y la nutrición de las mascotas, y no existen análisis recientes de este tipo para Costa Rica. Objetivo: Recomendar alimentos para mascotas de acuerdo al estado fisiológico, nivel de actividad y peso de perros y gatos en Costa Rica. Métodos: Los productos registrados en la Dirección de Alimentos para Animales del gobierno se analizaron para obtener información nutricional (2017) y los requisitos de los animales utilizando tres ecuaciones para gatos y nueve para perros. Resultados: De las recomendaciones de paquetes promedio, el 71% proporcionaría una nutrición insuficiente para los perros y el 63% una nutrición insuficiente para los gatos. Conclusiones: La mayoría de los productos alimenticios comerciales disponibles en Costa Rica recomiendan cantidades que son insuficientes para satisfacer las necesidades de muchos perros y gatos
Herramienta de apoyo al diagnóstico del TDAH en niños a partir de múltiples características de actividad eléctrica cerebral desde registros EEG
Authors: Cárdenas Peña David Augusto , Galindo Noreña Steven , Herrera Gómez Paula Marcela , Orozco Gutiérrez Álvaro Ángel
Published: July 2021

Este libro propone un compendio de metodologías tendientes a generar biomarcadores que soporten el diagnóstico objetivo del trastorno de déficit de atención e hiperactividad, desarrolladas en el marco del proyecto de investigación “Herramienta de apoyo al diagnóstico del TDAH en niños a partir de múltiples características de actividad eléctrica cerebral desde registros EEG”, ejecutado por investigadores del Instituto del Sistema Nervioso de Risaralda, la Universidad Nacional de Colombia sede Manizales y la Universidad Tecnológica de Pereira. Dentro de los investigadores se encuentran doctores en ingeniería y psiquiatría, quienes en un trabajo aunado han generado nuevo conocimiento en las áreas de aprendizaje de máquina y de psiquiatría infantil, materializado en artículos de investigación y herramientas de software para soporte diagnóstico del TDAH. El libro presenta una variante del paradigma Stop Signal Task incluyendo recompensas de magnitud cambiante. Luego introduce tres propuestas ...
RENEDI: Results of the first observational and prospective registry of transvenous lead extraction in Argentina. Inter-societary Working Group.
Authors: Ayarragaray Javier Ferrari , Speranza Ricardo , Mazzetti Hector , Girela Alejandro , Zuloaga Claudio De , Nigro Belen
Published: July 2021

Background and aim: RENEDI (“Registro Nacional de Extracción de
Dispositivos”) is the first registry on Transvenous Lead Extraction
(TLE) designed in Argentina with the objective of providing data on lead
extraction real-world practice. Methods: An online database platform was
designed. Data referred to patients, leads and extraction procedures
were compiled and reviewed by a Committee. Results: A total of 621 leads
were extracted from 325 patients (average age of 59 years; 71% male).
The targeted leads included 374 pacemaker leads (61%), 176 implantable
cardioverter-defibrillator leads (28%) and 71 cardiac resynchronization
therapy devices (11%). Two hundred and thirty-three (38%) atrial, 367
(59%) ventricular and 21 (3%) coronary sinus leads placement. The
average lead dwell time was 105. 9 months. The commonest indication for
removal was infection (68%-Local 71%). Cardiovascular surgeons were
usually the primary operator (81%). The presence of cardiovascular
stand-by was reported in 72% of cases. Percutaneous approach (98%) was
predominant. A total of 158 (25%) leads with a median dwell time of
33.3 months were extracted using simple traction. Overall complication
rate was 4%. Only one major complication and no deaths were informed.
Minor complications occurred in 3.6% of procedures. Complete procedural
success was 96.2%. Incomplete extraction was obtained in 23 leads. No
permanent disabling complications or procedure-related deaths were
reported. Conclusions: Current Argentinian practice has demonstrated
that TLE is a safe and effective procedure associated with a low
incidence of complications and high success rate when it is performed in
well-trained hands.
Is TEVAR Really Needed for Uncomplicated Type B Aortic Dissection?
Authors: Tan Sven Zhen Cian Patrick , Elsantawy Hazem , Abdelhaliem Amr
Published: July 2021

Thoracic endovascular aortic repair (TEVAR) has quickly become the
mainstay of treatment for acute aortic dissection, in particular cases
of acute complicated Stanford Type B dissection (co-TBAD). Necessarily,
TEVAR carries with it the risk of postoperative complications, including
stroke and renal failure. As a result, the management of patients with
uncomplicated type B aortic dissection (un-TBAD), which is generally
accepted as being less severe, are safely managed via optimal medical
therapy (OMT) alone. However, despite OMT, patients with un-TBAD are at
substantial risk of severe disease progression requiring delayed
intervention. The cost-benefit ratio associated with TEVAR for un-TBAD
is therefore of key interest. Howard and colleagues produced a
fascinating systematic review and meta-analysis investigating the
clinical outcomes of TEVAR for complicated and uncomplicated TBAD. Their
data suggests that there is no significant difference in in-hospital
mortality or 5-year survival between TEVAR for un-TBAD and co-TBAD,
although the 30-day mortality rate appeared to be higher in the co-TBAD
cohort. Patients with co-TBAD appeared to also be at a higher risk of
postoperative stroke and TEVAR endoleak, while un-TBAD patients were at
a higher risk of postoperative renal failure. Further prospective
research into these relationships are recommended to fully elucidate the
comparative efficacies of TEVAR for un-TBAD and co-TBAD.
Identification of Genotypic Variants and its Proteomic mutations of Brazilian SARS-CoV-2 Isolates
Authors: R Prathiviraj , CHELLAPANDI P , Kiran G. Seghal , Selvin Joseph
Published: July 2021

The second wave of COVID-19, which is caused by the severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2), is rapidly spreading
over the world. The mechanism behind the escaping from current
antivirals is still not clear, due to the occurrence of continuous
variants in SARS-CoV-2 genomes. Brazil is the world’s second most
COVID-19-affected country. In the present study, we identified the
genomic and proteomic variants of Brazilian SARS-CoV-2 isolates. We
identified 16 different genotypic variants were found among the 27
isolates. The genotypes of three isolates such as Bra/1236/2021 (G15),
Bra/MASP2C844R2/2020 (G11), and Bra/RJ-DCVN5/2020 (G9) have a unique
mutant in NSP4 (S184N), 2’O-Mutase (R216N), membrane protein (A2V) and
Envelope protein (V5A). A mutation in RdRp of SARS-CoV-2, particularly
the change of Pro to Leu at 323 resulted in the stabilization of the
structure in BRA/CD1739-P4/2020. NSP4, NSP5 protein mutants are more
virulent in Genotype 15 and 16. A fast protein folding rate changes the
structural stability and leads to escape for current antivirals. Thus,
our findings help researchers to develop the best potent antivirals
based on the new mutant of Brazilian isolates.
The Russian Paris of Sergei Rachmaninoff
Authors: Campbell Stuart
Published: July 2021

This article addresses Rachmaninoff?s activities in Paris, both a musical
capital of the world and unrivalled cultural centre of the Russian
emigration until 1940. It looks at the small number of concerts performed by
the pianist there and places them in the context of the French press. It
attempts to understand his ambiguous personal relationship to the city, the
activity of his publishing company ?TAIR?, and finally assesses the extent
of the composer?s charitable endeavours for the Russian community. The
article concludes Rachmaninoff was of monumental significance for the
?Russian? Paris.
The Late Charles Samuel Jackson, ESQ, M.A.
Authors: Lynam C.C.
Published: July 2021

The news of the sudden decease of the above named gentleman, who was a mathematical master at the “Shop” for a period of more than a quarter of a century, will be received with feelings of profound regret by many officers of the Royal Artillery and Royal Engineers.

Mr. Jackson left evening study (7.15) on the 17th October in his usual health, but was picked up unconscious just outside the West Lodge at 7.30 p.m., and conveyed to the Plumstead Infirmary, where he died the morning after without having regained consciousness.

Nothing was known of the sad occurrence in the “Shop” until after his death. So passed away one who was universally respected and esteemed, and who was held in great regard by all who knew him, both from his refined and gentle character and high intellectual attainments.
Rising Rates and Widening Socioeconomic Disparities in Diabetic Ketoacidosis in Type 1 Diabetes in Scotland: A Nationwide Retrospective Cohort Observational Study
Authors: O’Reilly Joseph E. , Jeyam Anita , Caparrotta Thomas M. , Mellor Joseph , Hohn Andreas , McKeigue Paul M. , McGurnaghan Stuart J. , Blackbourn Luke A.K. , McCrimmon Rory , Wild Sarah H. , Petrie John R. , McKnight John A. , Kennon Brian , Chalmers John , Phillip Sam , Leese Graham , Lindsay Robert S. , Sattar Naveed , Gibb Fraser W. , Colhoun Helen M.
Published: July 2021

OBJECTIVE

Whether advances in the management of type 1 diabetes are reducing rates of diabetic ketoacidosis (DKA) is unclear. We investigated time trends in DKA rates in a national cohort of individuals with type 1 diabetes monitored for 14 years, overall and by socioeconomic characteristics.

RESEARCH DESIGN AND METHODS

All individuals in Scotland with type 1 diabetes who were alive and at least 1 year old between 1 January 2004 and 31 December 2018 were identified using the national register (N = 37,939). DKA deaths and hospital admissions were obtained through linkage to Scottish national death and morbidity records. Bayesian regression was used to test for DKA time trends and association with risk markers, including socioeconomic deprivation.

RESULTS

There were 30,427 DKA admissions and 472 DKA deaths observed over 393,223 person-years at risk. DKA event rates increased over the study period (incidence rate ratio [IRR] per year 1.058 [95% credibility interval 1.054–1.061]). Males had lower rates than females (IRR male-to-female 0.814 [0.776–0.855]). DKA incidence rose in all age-groups other than 10- to 19-year-olds, in whom rates were the highest, but fell over the study. There was a large socioeconomic differential (IRR least-to-most deprived quintile 0.446 [0.406–0.490]), which increased during follow-up. Insulin pump use or completion of structured education were associated with lower DKA rates, and antidepressant and methadone prescription were associated with higher DKA rates.

CONCLUSIONS

DKA incidence has risen since 2004, except in 10- to 19-year-olds. Of particular concern are the strong and widening socioeconomic disparities in DKA outcomes. Efforts to prevent DKA, especially in vulnerable groups, require strengthening.
Circulating Free Fatty Acid and Phospholipid Signature Predicts Early Rapid Kidney Function Decline in Patients With Type 1 Diabetes
Authors: Afshinnia Farsad , Rajendiran Thekkelnaycke M. , He Chenchen , Byun Jaeman , Montemayor Daniel , Darshi Manjula , Tumova Jana , Kim Jiwan , Limonte Christine P. , Miller Rachel G. , Costacou Tina , Orchard Trevor J. , Ahluwalia Tarunveer S. , Rossing Peter , Snell-Bergeon Janet K. , de Boer Ian H. , Natarajan Loki , Michailidis George , Sharma Kumar , Pennathur Subramaniam
Published: July 2021

OBJECTIVES

Patients with type 1 diabetes (T1D) exhibit modest lipid abnormalities as measured by traditional metrics. This study aimed to identify lipidomic predictors of rapid decline of kidney function in T1D.

RESEARCH DESIGN AND METHODS

In a case-control study, 817 patients with T1D from three large cohorts were randomly split into training and validation subsets. Case was defined as >3 mL/min/1.73 m2 per year decline in estimated glomerular filtration rate (eGFR), while control was defined as <1 mL/min/1.73 m2 per year decline over a minimum 4-year follow-up. Lipids were quantified in baseline serum samples using a targeted mass spectrometry lipidomic platform.

RESULTS

At individual lipids, free fatty acid (FFA)20:2 was directly and phosphatidylcholine (PC)16:0/22:6 was inversely and independently associated with rapid eGFR decline. When examined by lipid class, rapid eGFR decline was characterized by higher abundance of unsaturated FFAs, phosphatidylethanolamine (PE)-Ps, and PCs with an unsaturated acyl chain at the sn1 carbon, and by lower abundance of saturated FFAs, longer triacylglycerols, and PCs, PEs, PE-Ps, and PE-Os with an unsaturated acyl chain at the sn1 carbon at eGFR ≥90 mL/min/1.73 m2. A multilipid panel consisting of unsaturated FFAs and saturated PE-Ps predicted rapid eGFR decline better than individual lipids (C-statistic, 0.71) and improved the C-statistic of the clinical model from 0.816 to 0.841 (P = 0.039). Observations were confirmed in the validation subset.

CONCLUSIONS

Distinct from previously reported predictors of GFR decline in type 2 diabetes, these findings suggest differential incorporation of FFAs at the sn1 carbon of the phospholipids’ glycerol backbone as an independent predictor of rapid GFR decline in T1D.
Rising Rates and Widening Socioeconomic Disparities in Diabetic Ketoacidosis in Type 1 Diabetes in Scotland: A Nationwide Retrospective Cohort Observational Study
Authors: O'Reilly Joseph E. , Jeyam Anita , Caparrotta Thomas M. , Mellor Joseph , Hohn Andreas , McKeigue Paul M. , McGurnaghan Stuart J. , Blackbourn Luke A.K. , McCrimmon Rory , Wild Sarah H. , Petrie John R. , McKnight John A. , Kennon Brian , Chalmers John , Phillip Sam , Leese Graham , Lindsay Robert S. , Sattar Naveed , Gibb Fraser W. , Colhoun Helen M. , Group the Scottish Diabetes Research Network Epidemiology
Published: July 2021

Objective - Whether advances in the management
of type 1 diabetes are reducing rates of diabetic ketoacidosis (DKA) is
unclear. We investigated time trends in DKA rates in a national cohort of
individuals with type 1 diabetes followed for 14 years, overall and by
socioeconomic characteristics.

Research Design and Methods - All individuals in Scotland who
were alive with type 1 diabetes and at least one year old between 2004-01-01
and 2018-12-31 were identified using the national register (N=37939). DKA
deaths and hospital admissions were obtained through linkage to Scottish
national death and morbidity records. Bayesian regression was used to test for
DKA time trends and association with risk markers, including socioeconomic deprivation.

Results - 30427 DKA admissions, and 472 DKA
deaths were observed over 393223 person-years at risk. DKA event rates
increased over the study period (IRR per year=1.058 [1.054-1.061]). Males had
lower rates than females (IRR Male:Female=0.814 [0.776-0.855]). DKA incidence
rose in all age groups other than 10-19 year-olds, in whom rates were the
highest but fell over the study. There was a large socioeconomic differential
(IRR least:most deprived quintile=0.446 [0.406-0.490]) which increased during follow-up.
Insulin pump use or completion of structured education were associated with
lower DKA rates, antidepressant and methadone prescription were associated with
higher DKA rates.

Conclusion - DKA incidence has risen since 2004,
except in 10-19 year olds. Of particular concern are the strong and widening
socioeconomic disparities in DKA outcomes. Efforts to prevent DKA, especially
in vulnerable groups, require strengthening.
The Impact of Work from Home to Work Life-Balance and Its Implication to Employee Happiness
Authors: Elnanto Johanna Gracelia , Suharti Lieli
Published: July 2021

Working from home was an increasing phenomenon to prevent the spread of COVID-19. Although WFH has been expendable well documented, there are still limited studies related to the subject of life balance, happiness and organizational support. This study aimed to figure out the influence of work from home on work-life balance, work-life balance on happiness, and the moderating role of organizational supports towards work from home and work-life balances. The respondents used in this research were the 94 lecturers. The study was done in a quantitative method through cross-sectional data and non-probability sampling method. The analysis model used was Path Analysis, Moderated Regression Analysis and Simple Regression test. The result of this research indicates that WFH has positive effects on WLB and WLB has positive effects on employee happiness. The testing done on moderating effect appeared that organizational support does not moderate the effects of WFH on WLB. Apart from that, theoretical and practical implications were also given in this research. The finding of this study also can be used as managerial practice for any institution and employees to be more aware of their life balances and well-being during the pandemic. For organization, this study can be beneficial to enhance several aspects in making the employees happier. This study also indicates that homeworking could become good alternatives that mutually benefit for both organizations and employees, including flexible work and improving work-life balance.
Asymptotic analysis of the Korteweg-de Vries equation by the nonlinear WKB technique
Authors:   Taras Shevchenko National University of Kyiv, Lyashko S. I. , Samoilenko V. H. ,   Taras Shevchenko National University of Kyiv, Samoilenko Yu. I. ,   Taras Shevchenko National University of Kyiv, Lyashko N. I. ,   Taras Shevchenko National University of Kyiv
Published: July 2021

The paper deals with the Korteweg-de Vries equation with variable coefficients and a small parameter at the highest derivative. The non-linear WKB technique has been used to construct the asymptotic step-like solution to the equation. Such a solution contains regular and singular parts of the asymptotics. The regular part of the solution describes the background of the wave process, while its singular part reflects specific features associated with soliton properties. The singular part of the searched asymp\-totic solution has the main term that, like the soliton solution, is the quickly decreasing function of the phase variable $\tau$. In contrast, other terms do not possess this property. An algorithm of constructing asymptotic step-like solutions to the singularly perturbed Korteweg--de Vries equation with variable coefficients is presented. In some sense, the constructed asymptotic solution is similar to the soliton solution to the Korteweg-de Vries equation $u_t+uu_x+u_{xxx}=0$. Statement on the accuracy of the main term of the asymptotic solution is proven.
A new geometrical method for portfolio optimization
Authors:   Université de Lyon, Université Lyon 1, CNRS, UMR5208, Institut Camille Jordan, Butin F.
Published: July 2021

Risk aversion plays a significant and central role in investors’ decisions in the process of developing a portfolio. In this portfolio optimization framework, we determine the portfolio that possesses the minimal risk by using a new geometrical method. For this purpose, we elaborate an algorithm that enables us to compute any Euclidean distance to a standard simplex. With this new approach, we can treat the case of portfolio optimization without short-selling in its entirety, and we also recover in geometrical terms the well-known results on portfolio optimization with allowed short-selling. Then, we apply our results to determine which convex combination of the CAC 40 stocks possesses the lowest risk. Thus, we not only obtain a very low risk compared to the index, but we also get a rate of return that is almost three times better than the one of the index.
System of change management strategies for the enterprise producing disposable tableware
Authors: Dulyasova M. V. , Ivanova O. A. , Morozov D. V.
Published: July 2021

The article deals with the global problem of plastic pollution of the environment.As a way to solve this problem, it is proposed to reduce the production of disposable plastictableware with a subsequent transition to the use of products that will be safe for theenvironment and human health. This transition involves the development of innovativeprojects to create biodegradable tableware, and materials, equipment and technologies forits manufacture. The implementation of such projects involves not only the creation ofproduct and technological innovations, but also the implementation of changes in the businessprocesses of enterprises. For the effective implementation of these processes, it is proposed touse the developed system of change management strategies, which is distinguished by adetailed elaboration of a set of organizational measures, including measures to motivatepersonnel in order to reduce resistance to the changes. The choice of a specific changemanagement strategy is determined by such criteria as the degree of their radicality, theperiod of execution and the allocated resources.
Islamic Economics’ Perspective on Labor Relations
Authors: Shovkhalov Sh. A.
Published: July 2021

The situation when employees are not paid wages is more common nowadays,and labor conflicts are mainly related to this. In the Islamic economy, wage arrears and allissues related to it are of fundamental importance, since the relationship between the managerand employees is much closer than with counterparties or creditors. In addition, there arespecific aspects that should be taken into account when analyzing these kinds of questions.The purpose of this article is to explore the Islamic economics view of labor relations.
Prospects for the development of cross—border electronic commerce between the Russian Federation and the People’s Republic of China
Authors: Sharipov F. F. , Dyakonova M. A.
Published: July 2021

Among the trends of business development on the border territory between Russia and China, according to the authors, electronic commerce is attractive. Practical examples have identified the development of cross–border e–commerce between our countries, taking into account the variety, pricing, promotion and settlement of the delivered goods. Sales are projected to grow steadily over the next four years, considering the need to adopt the latest technologies and cyber security requirements.
Theoretical foundations of Islamic banking and its current place in the world economy
Authors: Pshibieva S. A. , Fedorova I. Yu.
Published: July 2021

The research is aimed at studying the basic principles of Islamic banking and its modern distribution. This paper analyzed the development of Islamic banking in the world: in the Arab countries, Europe, the CIS countries and Russia.
Model for assessing the impact of industrial crisis on the regional economy
Authors: Dli M. I. , Kakatunova T. V.
Published: July 2021

The results of the analysis of the financial and economic condition of organizationsof various types of economic activity are presented. A cognitive economic and mathematicalmodel for assessing the impact of crisis phenomena in industry on the regional economy isproposed. The use of this model will increase the validity of anti–crisis management strategiesin industry.
ARTIFICIAL INTELLIGENCE IN TOURISM & HOSPITALITY – THE PERCEPTION OF TOURISTS AND TOURISM COMPANIES IN ROMANIA
Authors: TUTUNEA Mihaela-Filofteia
Published: July 2021

In a world where everyday life is directly influenced and focused on the use of technology as a support for individual and professional daily activity, we are all witnessing an increasingly obvious change in human interaction; we all notice how interpersonal interaction is rapidly being replaced by new technologies, solutions and application such as IoT and AI and which are going to completely change the perspective on human life so far. From this perspective and in the conditions of the ongoing pandemic, the present study focused on identifying the changes brought by AI solutions and applications in some of the most flexible and adaptable industries such as tourism and hospitality; in order to obtain a more complete picture, the study was oriented in a double perspective, namely the offer from the tourism & hospitality industry, on the one hand and the tourists, on the other hand; regarding the offer from tourism and hospitality, the study used both primary and secondary information, to visualize an image of the existing AI solutions/applications and adopted by the companies in these industries; For the category of tourists, knowing the generational difference regarding the new technologies from the perspective of the level of acceptance and their use, the study aimed at identifying generational profiles regarding the acceptance and use of AI applications in the tourist experience. We consider that the results of the study can be an important support for conducting more complex and comparative studies, related to the use of new technologies that obviously change the development of human society.
JEL classification: L86, M15, L83
Nutrition Knowledge, Dietary Pattern, and Nutritional Status of Elementary Students in Makassar City
Authors: Syarfaini Syarfaini , Ridwan Eka Sari , Aeni Syahratul
Published: July 2021

Elementary school children are a vulnerable group to nutritional problems. Malnutrition is generally caused by poverty, lack of food supplies, poor environmental quality, lack of public knowledge about nutrition, a balanced diet, and health. The purpose of this study was to analyze the relationship between balanced nutrition knowledge, dietary pattern, and nutritional status of children in Sekolah Dasar Islam Terpadu (SDIT) Makassar, Indonesia. The population in this study were all students in grades 4 and 5 with a total sample of 94 people. The results showed that there was no relationship between balanced nutrition knowledge and nutritional status (P = 0.397) and there was no relationship between diet pattern and nutritional status (P = 0.662) children at SDIT Makassar. Researchers recommend a Balanced Nutrition Ambassador program in every school. Ambassadors of Balanced Nutrition will be trained related to balanced nutrition and is responsible for disseminating balanced nutrition messages to their friends and their family
Interventions in Nutrition Education for Improving the Performance of Integrated Health Care
Authors: Alam Syamsul , Bahar Burhanuddin
Published: July 2021

The description of community behavior in utilizing existing health service facilities in their area can be seen from the success rate of the Posyandu program, namely the coverage of weighing children under five at the Posyandu. This study aims to examine that nutrition education interventions through community nutrition classes can increase the scope of integrated health care (posyandu) performance (D/S, N/D) in Bulukumba Regency, Indonesia. This research design is quasi-experimental. The samples in this study were mothers of children under five who were in the intervention area (n=107) and control (n=113). The intervention group was given nutrition education through community nutrition class activities, while the control group was given counseling. The results showed that there were changes in the intervention group in the form of increased knowledge of mothers of children under five, increased parenting patterns of mothers of children under five, increased levels of community participation, and increased body weight of toddlers compared to the intervention group. control group. Community nutrition classes at posyandu can be used as a model in increasing the level of community participation in posyandu because there are changes in both knowledges, child care patterns, the number of visits at posyandu (D/S), and the number of toddlers who experience weight gain from the previous month's weighing (N/D) for increased significantly.
Sengketa Sertifikat Hak Guna Bangunan Di Pengadilan Tata Usaha Negara Makassar Dalam Perspektif Hukum Islam
Authors: Amriani Amriani , M. Sewang Ahmad
Published: July 2021

AbstrakPandangan Hukum Islam tentang sengketa adalah Konflik dan sengketa yang terjadi di kalangan umat manusia merupakan suatu realitas karena manusia dibekali akal dan wahyu serta mampu menemukan pola penyelesaian sengketa sehingga penegakan keadilan dapat terwujud. Sengketa yang di lakukan di Pengadilan tata usaha Negara Makassar adalah lingkungan peradilan dibawa mahkama agung yang melaksanakan kekuasaan kehakiman bagi rakyat pencari keadilan terhadap sengketa Tata Usaha Negara. Jadi dalam penyelesaian sengketa Tata Usaha negara dapat di lakukan dengan tiga cara yaitu prosedur, subtansi dan kepentingan. adapun pertimbangan hukum hakim ada dua yaitu pertimbangan menurut ketentuan hukum Agrariya dan hukum Peradilan Tata Usaha Negara. Pola penyelesaian sengketa dapat dirumuskan manusia dengan merujuk pada sejumlah ayat al-Quran, hadis Nabi, praktek adat dan berbagai kearifan lokal. Kata Kunci : Hak Guna Bangunan, Hukum Islam, Sengketa, Sertifikat.  AbstractThe view of Islamic law on disputes is that conflicts and disputes that occur among humanity are a reality because humans are equipped with reason and revelation and are able to find patterns of dispute resolution so that justice can be realized. The dispute carried out in the Makassar State Administrative Court is a judicial environment brought by the Supreme Court which exercises judicial power for the people seeking justice for the State Administration dispute. So in the settlement of a state administration dispute can be done in three ways, namely procedures, substance and interests. As for the legal considerations of judges, there are two, namely considerations according to the provisions of Agrarian law and the law of the State Administrative Court. Patterns of dispute resolution can be formulated by humans by referring to a number of verses of the paper, hadith of the prophet, customary practices and various local wisdoms.Keywords: Building Rights, Certificates, Disputes, Islamic Law.
KEDUDUKAN BARANG LELANG YANG DIGUNAKAN UNTUK MELAKUKAN TINDAK PIDANA PENCURIAN DALAM PERSPEKTIF HUKUM ISLAM
Authors: Alfiana Riska , Sinilele Ashar
Published: July 2021

AbstrakPelaksanaan lelang terhadap barang yang digunakan dalam tindak pidana pencurian yang dilakukan oleh Kejaksaan Negeri Gowa selama ini tidak berjalan efektif. Hal ini disebabkan oleh lamanya waktu yang dibutuhkan oleh pihak Kejaksaan, jurusita dan panitia lelang yang terkait dalam proses penyelesaian suatu lelang terhadap barang rampasan. Dalam pandangan Hukum Islam barang lelang yang di rampas untuk negara yaitu barang yang digunakan dalam tindak pidana, hukumnya boleh karena penyitaan yang dilakukan oleh negara tersebut bisa dibenarkan oleh syariat karena penyitaan tersebut dalam rangka mewujudkan kepentingan bersama seluruh masyarakat serta dalam rangka pengembalian hak. Kata Kunci : Barang Lelang, Tindak Pidana Pencurian, Hukum Islam. AbstractThe auction of goods used in the theft crime carried out by the Gowa District Attorney hasn’t been effective. This is caused by the length of time required by the Prosecutor's Office, the bailiff and the auction committee involved in the process of completing an auction of the spoils. In view of Islamic Law, auctioned goods seized for the state are goods used in criminal acts, the law may be because the confiscation carried out by the state can be justified by the Shari'a because the confiscation is in order to realize the common interests of all people and in the context of returning rights.Keywords: Auction Items, Criminal Crimes, Islamic Law.
TINJAUAN HUKUM ISLAM TERHADAP SEWA MENYEWA POHON CENGKEH DI KABUPATEN SINJAI
Authors: Hartalena Hartalena , Sanusi Nur Taufiq , Anis Muhammad
Published: July 2021

AbstrakSewa menyewa (ijarah) merupakan bentuk perjanjian timbal balik yang menimbulkan kewajiban-kewajiban kepada kedua belah pihak dan hak serta kewajibannya itu mempunyai hubungan satu dengan yang lainnya.. Sewa menyewa pohon engkeh  di Desa Bonto Sinala merupakan bentuk sewa menyewa dengan mengambil buah dari pohon engkeh dalam satu kali masa panen. Metode penelitian ini adalah penelitian lapangan, dengan pendekatan penelitian adalah: Normatif Yuridis. Sumber data penelitian adalah wawancara dengan masyarakat desa Bonto Sinala. Hasil penelitian ini adalah Mengenai praktek sewa menyewa yang dilakukan oleh masyarakat setempat dan bagaimana pandangan hukum Islam terhadap praktek sewa menyewa tersebut . Implikasi penelitian adalah agar kiranya masyarakat bisa melakukan kegiatan bermuamalah dengan mengedepankan prinsip hukum Islam agar tidak terjadi permasalahan di kemudian hari.Kata Kunci : Hukum Islam, Pohon Cengkeh, Sewa Menyewa. AbstractLeasing (ijarah) is a form of reciprocal agreement that creates obligations to both parties and their rights and obligations have a relationship with one another. Leasing a small tree in the village of Bonto Sinala is a form of leasing by taking fruit from a small tree  in one harvest time.  The method of this research is field research, the research approach is: Normative Juridical.  The source of research data was interviews with the Bonto Sinala villagers.  The results of this study are regarding the practice of renting by the local community and how the view of Islamic law towards the practice of renting.  The implication of the research is that it is possible for the community to carry out activities with bermuamalah by promoting the principles of Islamic law so that problems do not occur in the future.Keywords: Clove Tree, Islamic Law, Leasing.
TINJAUAN HUKUM TERJADINYA WANPRESTASI GADAI SAWAH
Authors: Sutriani Sutriani , Safriani Andi , Sinilele Ashar
Published: July 2021

AbstrakWanprestasi gadai sawah di Desa Lambarese terjadi karena salah satu pemicunya adalah si pemilik sawah tidak jujur di awal perjanjian bahwasanya sawah tersebut banyak pihak  yang menggadai dan serifikat dari sawah tersebut telah di gadaikan di Bank. Proses dalam pelaksanaan transaksi gadai sawah  di desa Lambarese antara penggadai (rahin) dengan pihak penerima gadai (murtahin) dengan kata lain prinsipnya sama dengan gadai sawah pada umumnya yang berlaku dikalangan masyarakat lain. Upaya masyarakat dalam melaksanakan gadai sawah di desa Lambarese yaitu: Musyawarah secara kekeluargaan, ketika tidak menemukan titik temu, maka diadakan musyawarah dengan pemerintah setempat, ketika keduanya tidak menemukan titik temu maka masyarakat yang terlibat dalam gadai sawah tersebut mengajukannya kepengadilan. Di dalam KUHPer, perjanjian hutang piutang di golongkan sebagai perjanjian khusus. Perjanjian yang di lakukan oleh masyarakat Desa Lambarese dalam hal gadai sawah dilakukan secara tertulis.Kata Kunci: Gadai Sawah, Tinjauan Hukum, Wanprestasi. AbstractThe default of the paddy pawning in Lambarese Village occurred because one of the triggers was the dishonest owner of the rice field at the beginning of the agreement that many parties had pawned the rice field and the certificate of the rice field had been mortgaged at the Bank. The process of implementing a rice field pawning transaction in Lambarese village between the pawner (rahin) and the recipient of the pawning (murtahin) in other words, the principle is the same as the paddy pawn transaction in general which applies among other communities. The efforts of the community in implementing rice field pawning in Lambarese village are: Family discussion, when they do not find a common ground, a discussion is held with the local government, when the two do not find common ground, the community involved in the pawnshop submits it to court. In the Criminal Code, accounts payable agreement is classified as a special agreement. The agreement made by the people of Lambarese Village in the case of a rice field pawn is done in writing.Keywords: Default, Legal Review, Pawn of Rice