bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparing continuous control policies by modeling and simulation of the procurement process
Authors: Douraid Abdessamad , Ech-Cheikh Hamid , El Had Khalid , Laradi Mohamed 
Published: February 2021

Inventory management is a challenging problem area in supply chain management and companies need to have inventories in warehouses in order to satisfy customer's needs. Meanwhile, these inventories have holding costs and this is a frozen fund that can be lost. Therefore, the task of inventory management is to find the right quantity of inventories that will fulfill the demand with the right price, avoiding overstocks. The aim of this paper is to carry out a comparing study of continuous inventory control policies in a stochastic environment of demand and lead time, in order to find out the impacts of the decision variables of each inventory control policy. For this purpose, the discrete event simulation approach has been chosen to generate various scenarios of inventory control policies of the procurement process by taking into account the production planning of the manufacturing company. The comparison of these configurations based on the essential key performance indicators of the supply chain, namely the cost and service level.Â Â
Analysis of a three phase capacitor voltage balanced hybrid multi-level inverter with a three phase RL-load
Authors: Crescent O Omeje , Damian B Nnadi , Charles I. Odeh , Candidus U. Eya , Stephen E Oti 
Published: February 2021

This paper outlined the basic concepts of two selected types of hybrid multi-level inverters that were capacitor voltage-source dependent. A natural capacitor voltage balancing involving hysteresis with redundant switching states was analyzed in this paper. Simulations using MATLAB 7.14 were carried out for an unbalanced and a well-balanced capacitor voltage supply under 0V, 100V and 200V pre-charged capacitor voltage conditions. A comparative analysis of the two types of hybrid multi-level inverters (Type A and Type B) with pertinent to %THD values of [35.77% and 23.79%] for Type A and [92.10% and 84.94%] for type B during fault occurrence were evaluated in this work. These harmonic values can lead to thermal run away and total malfunction of the semi-conductor switches. An experimental vali-dation of Type A hybrid multi-level inverter with a three level flying capacitor input stage and H-bridge output stage using a three phase RL-Load of 15â„¦ and 45mH was accomplished in the laboratory with results compared with the simulations for experimental verification.Â Â
Industry 4.0 and smart manufacturing convergence: profiling guidelines for a fourth revolution
Authors: Henry Avila John , De JesÃºs Gil-Herrera Richard 
Published: February 2021

Nowadays, all companies are subject to new global trends related to smart manufacturing, connectivity, information technologies applications, big cloud-based data analysis, Cyber-Physical Systems, among others. These factors generate changes in the supply chain of manufacturing and service companies. According to literature reviewing, the applicable central model of the new trends, which allows these companies to face these changes, has been in continues movement. To understand the behavior of these trends, a documentary review related to Industry 4.0 and Smart Manufacturing as trends that outline the fourth industrial revolution, is facing through this work. As result of this review, the authors to develop holistically a semantic representation of the main terms of descriptive figures and graphs, some components and terminology related to Industry 4.0 and Smart Manufacturing. As main conclusion, this reached integrated view, aimed to establish a semantic guideline of the fourth industrial revolution that may be also applicable to the enterprise no matter its size.Â Â
MLR institute of technology campus energy monitoring and controlling system with interconnection of grid and solar power
Authors: Sreenivasa reddy M. , Shubhangi Rao A. , Sai Prakash Ch. 
Published: February 2021

This paper mainly deals with energy consumption and monitoring of each block after carefully observing where the losses occur and how to minimize these losses and how to reduce unit consumption of each block and units consumed by capacitor bank. Base loads and Peak loads can be observed and operated in such a way as to reduce unit consumption.MLR college has 315KVA power from the grid as well as 260KW solar power generating unit where 40 percent of the power from the grid is saved. Proper planning for operating the underground bore motors used for Hostels, Mess and College buildings also saves some amount of units consumed by these motors. Further if power factor is maintained 0.99 instead of 0.2 or 0.3 some amount of units consumed can be saved. Further if maximum demand is prevented from reaching beyond the transformer rating then some amount of units consumed can be saved. Installing copper earth pits of suitable numbers for each block and balancing the loads in each phase can also reduce the losses.Synchronizing panel is to be connected to the existing 4 generators of rating 200KVA,180KVA and two numbers of 125 KVA to utilize the power resources properly.The common electrical problems like short circuit, open circuit, over voltage, low voltage, frequent power cuts, low power factor, high electricity bills damage in the meters etc. The above electrical problems are identified, rectified and frequently monitored through modern technologies like IOT.Â Â
Evaluation of the thermal performance of a box type solar cooker in the rainy season in a sub-Saharan country
Authors: Soro D. , Doumbia Y. , MarÃ­ B. , Fofana B. , A. YAO N. , TourÃ© S. , Aka B. 
Published: February 2021

This article deals with the calculation of the performance parameters of a box-type solar cooker in a sub-Saharan country in the rainy season where the solar activity is considerably attenuated because of the numerous cloudy periods. The various tests were carried out at the Labora-tory of Fundamental and Applied Physical Sciences of the Ã‰cole Normale SupÃ©rieure (ENS) in Abidjan. During these cooking tests, the illuminance was measured. The temperatures of the ambient air and of various places of the solar cooker were also recorded. Illumination measurements made with an EPPLEY type pyranometer made it possible to determine the average illuminance which oscillates between 636.98 w / mÂ² and 517.91w / mÂ² depending on the day. The average energy efficiency of the cooker has been calculated for the cooking of several foods. It varies between 20.48 Ùª to 26.59%. The overall loss coefficient is between 5.63 and 5.82. The results obtained for these tests are satisfactory and very encouraging, especially since they were carried out in the rainy season.Â Â Â
COVID-19: what should we learn?
Authors: Pozzi MD A , Pozzi MD F , Campione MD A , Iorio MD A 
Published: February 2021

At the beginning of 2020 the COVID-19 outbreak had a massive impact on socio-economic, psychology and health system. The authors depict the possible weak points that influenced the spread infection. A collective decision making should be suggested in order to have an unvarying control to counteract future outbreaks, along with the needed of more health resources.Â Â
Diabetic autonomic neuropathies as a major risk factor for silent myocardial ischemia and infarction: a literature review
Authors: Shek Kamara Kindo , Feng Tong Chuan 
Published: February 2021

A substantial number of myocardial infarctions (MIs) are asymptomatic or associated with mi-nor and atypical symptoms. These symptoms are often atypical or even absent, especially in di-abetic patients. A number of studies on this topic have shown that in the presence of myocardial ischemia and infarction, diabetic patients report angina less frequently than non-diabetic pa-tients. In this article review, we researched several published articles written about this subject and investigated the relationship between Diabetes Mellitus (DM) in patients and the occur-rence of silent myocardial ischemia and infarction due to the onset of diabetic neuropathy (DN), which is brought about by prolonged diabetes. Based on our research of published articles and studies, we found overwhelming evidence that supports the fact that diabetic autonomic neu-ropathy (DAN) is a major contributing factor in the morbidity of silent myocardial ischemia and infarction among patients suffering from DM.Â Â
Safety and efficacy of double vs. triple antithrombotic therapy in patients with atrial fibrillation with or without acute coronary syndrome undergoing percutaneous coronary interventionï¼š a systematic review and meta-analysis of vitamin k antagonist a
Authors: Sophearith Phav 
Published: February 2021

Objective: To compare the safety and efficacy of double therapy (DT) (no aspirin) versus triple therapy (TT) (with aspirin) antithrombotic drugs in patients with atrial fibrillation and acute coronary syndrome or underwent percutaneous coronary intervention (PCI).Methods: We searched PubMed, Cochrane, Scopus, and Web of Science for relevant articles from inception to December 2020. We conducted the analysis of dichotomous outcomes using risk ratio (RR) and relative 95% confidence interval (CI), while the continuous outcomes were analyzed using mean difference (MD) and relative 95% CI. Heterogeneous outcomes were analyzed with random-effects model, and homogeneous data were analyzed with fixed-effects model. We assessed the risk of bias among the included studies by using Cochraneâ€™s risk of bias tool.Results: A total of five studies were included. Regarding Major or Minor Bleeding, the overall risk ratio was significantly lower with DT group compared with TT group (RR=0.60 [0.45, 0.81], (P = 0.07)). For the safety endpoint (TIMI major or minor bleeding, TIMI major bleeding) favored DT group over TT group, respectively (RR=0.60 [0.45, 0.81], (P = 0.07)); (RR= 0.55 [0.43, 0.70], (P < 0.01)). Intracranial hemorrhage did not differ between both groups (RR=0.62 [0.37, 1.05], (P = 0.07)). The efficacy endpoint, all-cause death showed no significant difference between both groups (RR=1.08 [0.89, 1.31], (P = 0.42)). There were no significant differences between two groups in cardiovascular death, stent thrombosis, myocardial infarction and stroke, respectively (RR=1.10 [0.86, 1.41], (P = 0.43); (RR=1.40 [0.92, 2.12], (P = 0.11); (RR=1.20 [0.98, 1.49], (P = 0.08); (RR=0.95 [0.66, 1.37], (P = 0.79).; respectively).Conclusion: Compared with triple antithrombotic therapy, double antithrombotic therapy is associated with lower bleeding risks, including minor and major bleeding, but the incidence of efficacy endpoints was similar between both groups.Â Â Â
Structural and elastic properties, Vickers hardness and Debye temperature of (B1) BP: DFT study
Authors: Daoud Salah 
Published: February 2021

A theoretical study of the structural parameters and elastic constants of boron phosphide (BP) compound with cubic rocksalt structure has been carried out using ab-initio density functional theory (DFT) and density functional perturbation theory (DFPT) calculations based on the plane-wave and pseudopotential (PW-PP) approach. Elastic anisotropy factors, Cauchy pressure, inverted Pughâ€™s ratio, aggregate mechanical moduli (shear modulus, Young's modulus and Poisson's ratio), Vickers hardness HV, elastic wave velocity as well as the Debye temperature Î¸D and the melting point have been also calculated. Our obtained results are in general in good agreement with other data of the literature. The deviation between our obtained value (4.225 Ã…) of the lattice constant and the theoretical value (4.282 Ã…) of the literature is around 1.33%, while that between our obtained value (169.7 GPa) of the bulk modulus and the theoretical one (171 GPa) is only around 0.77%. The calculated values of HV and Î¸D were found at around 30.5 GPa and 1254 K (1314.4 K), respectively.Â Â
Geotechnical investigation of road pavement failure along arigidi / oke - agbe akoko, southwestern, Nigeria
Authors: Henry Tolulope Ogunribido Thompson , Ezekiel Fadairo Tunde 
Published: February 2021

Twenty soil samples collected from the failed portions in the study area were air dried for two weeks before analyses. Each soil samples were subjected to eight engineering tests which include: natural moisture content, atterberg limit, specific gravity, compaction, unconfined compressive strength, California bearing ratio, grain size and hydrometer analysis. Results showed that the natural moisture content ranged from 17.7% to 37.8%, liquid limit from 48.5% to 62.4%, plastic limit from 18.3% to 26.8%, plasticity index from 25.7% to 37.7%, shrinkage limit from 5.8%-12.5%, optimum moisture content from 14.2% to 32.4%, maximum dry density from 1301 Kg/rn3 to 2002 Kg/rn3. Soaked California bearing ratio ranged from 5% to 17%, unsoaked from 15% to 38%, specific gravity from 2.5 to 2.68, unconfined compressive strength r from 112.8 Kpa to 259.7 Kpa, shear strength from 56.4 Kpa to 129.9 Kpa and hydrometer analysis from 48.5% to 72.1%. Based on the Federal Government specifications for pavement construction, for the soil to be suitable, stabilization with bitumen, Portland cement, lime, coal fly ash, and saw dust should be done. Road pavement failure along Arigidi â€“ Oke Agbe road was due to poor engineering geological condition of the sub-grade soils and poor drainage systems.Â Â
Construction of steel shed: a case study of automobile service center, bells university of technology, Sango-Ota, Ogun state, Nigeria
Authors: O. Ajala M. 
Published: February 2021

The construction of steel shed for Automobile Service Centre at the Bells University, Sango-Ota, Ogun State, Southwestern Nigeria was deemed necessary in order to expand the existing structure, ensure safety and bring economic gains to the Institution. This paper therefore presents a report of the construction of steel shed at the Automobile Service Centre where activities such as automobile checks, repairs and so on are been carried out. In carrying out the project, the following methods were adopted: evaluation of design/working drawings, selection and fabrication of structural members, construction work and finishing. All methods follow standard procedures as specified in relevant British standards. The assemblage and completed work were the results of the methods mentioned above and it was confirmed that the members were adequate to carry the live and dead loads that they may be subjected to. The aim of the project was achieved.Â Â
Geometric Modelling of the Thinning by Cell Complexes
Authors: Hasan-Zadeh Atefeh 
Published: February 2021

Motivation: Thinning is an extremely active area of research because of its primary role in reducing the amount of information that must be processed by algorithms for pattern recognition. Most thinning algorithms are supposed to be topology-preserving, although an accurate statement of what this means is usually left unanswered.Results: The objective of this article is the presentation of a general topology via the concepts of homotopy theory to preserve the thinning. The proposed method can be applied to any decomposition of non-structural cells of the object, given that the cells have a fixed structure.Â Â
Proses Islamisasi Melalui Jalur Perniagaan di Lombok: Sebuah Analisis Historis
Authors: Rijal Ahsanul 
Published: February 2021

In the process of Islamizing the people of Lombok. There are many theories about the entry of Islam in Lombok through commercial channels. As one of the nations with marine wealth, before Islam entered the nation, Indonesia was known as sailors. So, in the process of entering Islam, of course it cannot be separated from marine activities and commerce. This article focuses on commercial activities as the beginning of the entry of Islam in Lombok. By using critical historical and phenomenological approaches from various historical literatures. Based on commerce in observing the process of Islamization and showing the argument that the da’wah process was preceded by economic struggle. This article strengthens the general theory that Islam was brought in by Muslim traders. Also, this article shows that Islam entered by seizing the economic base of the Indonesian people, namely agricultural and maritime commodities. This means that the beginning of Islam did not directly preach religion, but was involved in the economic activities of the people of the archipelago, then Islam was preached. This article is qualitative-descriptive, with local historical databases such as Babad Lombok and Negarakartagama.Dalam proses Islamisasi masyarakat Lombok, banyak teori mengenai masuknya Islam di Lombok melalui jalur perniagaan. Sebagai salah satu bangsa dengan kekayaan laut, sebelum Islam masuk bangsa Indonesia sudah dikenal sebagai pelaut. Maka, dalam proses masuknya Islam tentu tidak bisa lepas dari aktivitas laut dan perniagaan. Artikel ini berfokus pada aktivitas perniagaan sebagai awal masuknya Islam di Lombok. Dengan menggunakan pendekatan historis dan fenomenologis kritis dari berbagai literatur sejarah. Berbasis pada perniagaan dalam melihat proses Islamisasi serta menunjukkan argumentasi bahwa proses dakwah didahului dengan perebutan ekonomi. Artikel ini memperkuat umumnya teori, Islam masuk dibawa oleh para pedagang muslim. Juga, dalam artikel ini menunjukkan bahwa Islam masuk dengan merebut basis ekonomi masyarakat nusantara yaitu komoditas pertanian dan maritim. Artinya, awal Islam masuk tidak langsung mendakwahkan agama, melainkan ikut terlibat dalam aktivitas ekonomi masyarakat nusantara, kemudian barulah Islam didakwahkan. Artikel ini menggunakan kualititaf-deskriptif, dengan basis data sejarah lokal seperti Babad Lombok dan Negarakartagama.
Trafność teoretyczna Kwestionariusza radzenia sobie w sytuacjach stresowych CISS ze szczególnym uwzględnieniem trafności teore-tycznej skali stylu skoncentrowanego na unikaniu
Authors: Jabłońska Agata 
Published: February 2021

Sprawdzono trafność teoretyczną Kwestionariusza radzenia sobie w sytuacjach stresowych (CISS) ze szczególnym uwzględnieniem trafności skali stylu skoncentrowanego na unikaniu (SSU). 141 studentów (76 kobiet, 65 mężczyzn) w wieku 19-26 lat, wypełniło: kwestionariusz CISS, Skalę Uogólnionej Własnej Skuteczności, Pure Procrastination Scale oraz Kwestionariusz spędzania wolnego czasu. Badanie trafności metodą analiz: macierzy korelacji, czynnikowej oraz struktury wewnętrznej testu, dostarczyło argumentów świadczących na korzyść trafności teoretycznej, zarówno skali SSU jak i całego kwestionariusza. Uwzględniając uzyskane dane oraz wyniki badań zagranicznych (Endler, Parker, 1990b, 1994; Cosway, Endler, Sadler, Deary,Â 2000), sugeruje się rozważenie wprowadzenia w polskiej wersji kwestionariusza zróżnicowania norm stenowych dla płci.
Improved gestational diabetes screening protocol
Authors: Calero Rojas Miguel , Jurado Roger Aurora , Gutiérrez Grúa Marta , de la Peña Carretero Lourdes , Romero Sotomayor Victoria , López Braos Javier , Izquierdo Carrasco Federico , Herrero Tabanera Luis , Moreno Aguilar Carmen 
Published: February 2021

Abstract

Objectives
This work aimed to assess the diagnostic validity of two approaches for the screening of gestational diabetes mellitus (GDM) with less discomfort for pregnant women.

Methods
A prospective diagnostic validation study was conducted with 2007 pregnant women. According to risk factors for GDM, women were classified into high-risk and low-risk groups. The current diagnostic procedure, based on oral glucose overload, was followed; simultaneously HbA1c was tested and an algorithm combining both biomarkers was applied.

Results
In the low-risk group, the Glucose challenge test (GCT) showed a higher area under the curve (AUC 0.953; 95% CI 0.915–0.992) than the HbA1c test (0.688; 95% CI 0.541–0.834). The best GCT cut-off, 153.5 mg/dL (8.52 mmol/L), showed higher diagnostic validity than that for HbA1c, 28 mmol/mol (4.75%), and that the algorithm using both tests. In the high-risk group, the GCT showed better diagnostic performance than the HbA1c and the algorithm; the optimal GCT cut-offs were higher than those recommended in current protocols. 13th week: GCT AUC 0.882 (95% CI 0.843–0.921), HbA1c AUC 0.624 (95% CI 0.562–0.686), GCT cut-off 140.5 mg/dL (7.8 mmol/L), HbA1c cut-off 33 mmol/mol (5.15%). 24th week: GCT AUC 0.944 (95% CI 0.925–0.962), HbA1c AUC 0.642 (95% CI 0.575–0.709), GCT cut-off, 145.5 mg/dL (8.08 mmol/L), HbA1c cut-off 29 mmol/mol (4.85%).

Conclusions
The GDM diagnostic approach using as the first step the GCT with higher cut-offs showed the best diagnostic validity. Applying these thresholds, 55.6 and 13.7% of 100 g. Oral glucose overloads would have been avoided in low-risk and high-risk pregnant women.
Sharp conditions for the convergence of greedy expansions with prescribed coefficients
Authors: Valiullin Artur R. , Valiullin Albert R. 
Published: February 2021

Abstract
Greedy expansions with prescribed coefficients were introduced by V. N. Temlyakov in a general case of Banach spaces. In contrast to Fourier series expansions, in greedy expansions with prescribed coefficients, a sequence of coefficients

{

c

n

}

n
=
1

∞

{\left\{{c}_{n}\right\}}_{n=1}^{\infty }

is fixed in advance and does not depend on an expanded element. During the expansion, only expanding elements are constructed (or, more precisely, selected from a predefined set – a dictionary). For symmetric dictionaries, V. N. Temlyakov obtained conditions on a sequence of coefficients sufficient for a convergence of a greedy expansion with these coefficients to an expanded element. In case of a Hilbert space these conditions take the form

∑

n
=
1

∞

c

n

=
∞

{\sum }_{n=1}^{\infty }{c}_{n}=\infty

and

∑

n
=
1

∞

c

n

2

<
∞

{\sum }_{n=1}^{\infty }{c}_{n}^{2}\lt \infty

. In this paper, we study a possibility of relaxing the latter condition. More specifically, we show that the convergence is guaranteed for

c

n

=
o

1

n

{c}_{n}=o\left(\frac{1}{\sqrt{n}}\right)

, but can be violated if

c

n

≍

1

n

{c}_{n}\hspace{0.33em}\asymp \hspace{0.33em}\frac{1}{\sqrt{n}}

.
Laboratory measurement method for the mechanical interaction between a tactile sensor and a cartonboard package – presentation and evaluation
Authors: Eriksson Daniel , Persson Camilla , Eriksson Henry , Käck Tore , Korin Christer 
Published: February 2021

Abstract
The importance of sensory information in product purchasing decisions has gained increasing attention in recent years. Tactile properties of packaging are usually measured with the help of trained evaluators. An objective, fast and repeatable method that describes the mechanical interaction and does not rely on a panel would have many benefits. We propose and evaluate such a method for measuring the mechanical interaction between a deformable finger-like shaped sensor and a package. Evaluation of the method shows good repeatability, the variability in the measurement result is within a few percent in most cases. The method captures indentation differences at contact between sensor and package due to measurement position and package design.