bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal design and low noise realization of digital differentiator
Authors: Goswami Om Prakash , Shukla Aasheesh , Kumar Manish 
Published: November 2022

Abstract
This manuscript presents a design of a differentiator in the digital domain with its low noise realization. It manifests the minimization of the L1 -error objective function by using a hybrid optimization technique consisting of the particle swarm and simulated annealing optimization algorithm. The obtained magnitude response provides a noteworthy approximation of the ideal differentiator with a minimal magnitude inaccuracy when compared with the existing designs. The realization structures are also investigated and compared in terms of the noise gain behavior.
A triple path noise cancellation LNA with transformer output using 45 nm CMOS technology
Authors: Kalra Dheeraj , Goyal Vishal , Srivastava Mayank 
Published: November 2022

Abstract
A triple path dual resistive feedback noise cancellation (TP-DRNC) low noise amplifier (LNA) with transformer output presented which provides high gain, low noise figure (NF), and high figure of merit (FM). The analysis of triple path, dual resistive, gain, and NF have been discussed. The effect of various components used in the circuit have been analyzed and their optimized values are obtained which resulted in the high (FM). The combination of dual resistive feedback with triple path NC transformer output allowed for low NF and high gain. The proposed GPDK 45 nm complementary metal oxide semiconductor (CMOS) technology-based LNA offers a flat gain curve of 10.81 dB over the range of 1.6 GHz to 4.3 GHz, or 2.7 GHz bandwidth, and S11 less than −9 dB. The input third order intercept point (IIP3) for the given bandwidth has value of 5.7 dBm, while the minimal NF achieved is 2.7 dB; (FM1) is 14.026 and (FM2) is 12.48. The proposed LNA’s layout with an o -chip transformer has an area of 0.01985 mm2
Novel MAC routing protocol for wireless sensor networks based on IEEE 802.11 ad hoc networks
Authors: Choi Woo-Yong 
Published: November 2022

Abstract
Due to the lack of efficient specified multi-hop routing protocol, IEEE 802.11 ad hoc networks have been in limited use for realizing wireless sensor networks where wireless sensors are dispersed in a region and each sensor can transmit its data to one another. We propose a novel MAC routing protocol for IEEE 802.11 wireless sensor networks, of which the service areas are extended by appropriately appointed pseudo-access points.
Frequency magnitude distribution and spatial correlation dimension of earthquakes in north-east Himalaya and adjacent regions
Authors: Tiwari Ram Krishna , Paudyal Harihar 
Published: November 2022

Abstract
The north-east sector of the Himalaya is one of the most active tectonic belts, with complex geological and tectonic features. The b-value and spatial correlation dimension (Dc) of earthquake distribution in the north-east Himalaya and its adjacent regions (20–32°N and 88–98°E) are estimated in the present study. Based on seismicity and faulting pattern, the region is divided into five active regions, namely the (i) South-Tibet, (ii) Eastern-Syntaxis, (iii) Himalayan-Frontal Arc, (iv) Arakan-Yoma belt and (v) Shillong-Plateau. A homogeneous catalogue of 1,416 earthquakes (mb ≥ 4.5) has been prepared from a revised catalogue of the ISC (International Seismological Centre). The b-value has been appraised by the maximum likelihood estimation method, while Dc values have been calculated by the correlation integral method; b-values of 1.08 ± 0.09, 1.13 ± 0.05, 0.92 ± 0.05, 1.00 ± 0.03 and 0.98 ± 0.08 have been computed for the South-Tibet, Eastern-Syntaxis, Himalayan-Frontal Arc, Arakan-Yoma belt and Shillong-Plateau region, respectively. The Dc values computed for the respective regions are 1.36 ± 0.02, 1.74 ± 0.04, 1.57 ± 0.01, 1.8 ± 0.01, and 1.83 ± 0.02. These values are > 1.5, except for the South-Tibet (1.36 ± 0.02). The b-values around the global average value (1.0) reflect the stress level and seismic activity of the regions, while high Dc values refer to the heterogeneity of the seismogenic sources.
Evaluation of the Effects of the Water-Flat-Panel Illuminator-Air Optical System on the Size of the Photographed Object
Authors: Sokół Ł. , Olejnik A. 
Published: November 2022

Abstract
The paper discusses the problem of the effect of the water - flat-panel illuminator - air optical system on the size of an object photographed in an underwater environment as well as presents an analysis of the function describing the angular size of an object photographed with this type of system along with the results of computer simulations. It has been shown that when using this type of an optical system in practice, the value of the angle of incidence of the rays from the photographed object on the illuminator plane has the major influence on output object dimensions.
Underwater Vehicles in the Research Work of Szczecin Universities — Projects
Authors: Graczyk Tadeusz 
Published: November 2022

Abstract
The article presents the development and scope of research work in the early period of interest in deep-sea technology in Poland in the 1980s. The research was carried out at the then Szczecin University of Technology and initially concerned studies of the level of world technology, followed by the construction of experimental unmanned underwater vehicles. The work culminated in the development of designs for manned deep-sea vehicles, the construction of which depended on commissions from the countries of the Eastern Bloc. Political and economic changes resulted in the abandonment of the continuation of work.
Prevalence of Anti-Hav IgG Antibodies in the Population of the Łódź Macroregion by Age Group
Authors: Henrykowska Gabriela , Kotecka Kornelia , Jabłkowska Aleksandra , Buczyński Andrzej , Woźny Joanna 
Published: November 2022

Abstract
Over the last several decades, a gradual decrease in the incidence of hepatitis A and an increase in the population of non-immune people, especially in the group of young people have been observed in Poland. The aim of this study was to assess of the presence of specific anti-hepatitis A virus IgG class antibodies (anti-HAV IgG) in relation to age among non-vaccinated hepatitis A patients. There were statistically significantly more patients up to 45 years of age with anti-HAV IgG negative results than those over 45 years of age, and the Fi-square correlation coefficient (Φ2) was 0.263 between the analyzed variables. The data analysis shows that the number of people with specific IgG antibodies against hepatitis A increases with age. The risk of hepatitis A infection in people under 45 is high due to widespread seronegativity in this age group.
Scientific Diving in Poland and Invitation to the Polish Committee on Scientific Diving
Authors: Bałazy Piotr , Kontny Bartosz , Różycki Janusz , Saniewski Michał , Puczko Dariusz , Pydyn Andrzej 
Published: November 2022

Abstract
Scientific diving (i.e. diving for research purposes organised by universities and research institutes) was excluded from the Act on the performance of underwater works in 2014. With the exception of the introduction of internal regulations at several academic institutions involved in underwater research, to date it remains unregulated at national level. In May this year, an initiative group consisting of six scientific institutions established the Polish Scientific Diving Committee - PKNN. Its aim is to unite Polish institutions using scientific diving in their activities, to represent their interests in the national and international arena, to co-operate and exchange experience, to adopt and develop appropriate standards and procedures, including those relating to safety, and to achieve the future introduction in Poland of regulations fully regulating scientific diving, as well as to support the development of this field of underwater research in Poland.
Health Promoting University Management Program in Realizing The Health Campus Society and Wellbeing in Andalas University 2022
Authors: Fadila Mesa , Putera Roni Ekha , Ariany Ria 
Published: November 2022

A Health Promotion University is one of the public programs in an effort to create a healthy campus community in a comprehensive manner. Even though it is new, this program has a strategic and systematic role in the development of the community structure of the university environment. The purpose of this study is to find out how the management of a healthy campus program at Andalas University uses the system approach method by Azrul Azwar with input, process, output, impact indicators. The approach used is descriptive qualitative with data collection through document review, observation, interviews, and FGD with purposive sampling. Data were analyzed by codification/reduction, data display, and drawing conclusions. Data validity by source triangulation.Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â The results of the study indicate that the management of the Andalas Health Promotion University has not been implemented properly based on; (1) program inputs are generally sufficient, both man, money, and material. Weaknesses are found in the method that has not been specifically formulated for program implementation guidelines at Unand, (2) The process has been carried out by Andalas University as a follow-up to the cooperation agreement with the Ministry of Health, but the work program planning has not been completed as a projection in achieving program goals and has not yet been included. in the Unand Strategic Plan. Organizing the Health Promotion University Management Team has been formed since 2019, but its position in the organizational structure at Andalas University is not yet clear, resulting in less effective coordination and communication in program implementation (3) The output of the Health Promotion University program has begun to be produced, but it is still very minimal because there are no program achievement indicators that should be contained in program planning. (4) The impact of this program can not be felt/measured because it is directly related to the output which cannot be obtained optimally.
Turkish children with new-onset type 1 diabetes mellitus had more severe clinical presentation during COVID-19 pandemic
Authors: Sargin Irmak Dicle , Kirmizibekmez Heves , Seymen Gulcan , Kutlu Esra , Dursun Fatma 
Published: November 2022

Objectives:
The pandemic of coronavirus disease 2019 (COVID-19) seriously affected psychological, economic, and social aspects of life. We aimed to compare the clinical characteristics of children with new-onset type 1 diabetes mellitus diagnosed in the lockdown period with the profile of those diagnosed before the pandemic.

Material and Methods:
The clinical features of 39 patients with new-onset type 1 diabetes diagnosed within 1 year starting from March 16, 2020, when schools were closed due to the COVID-19 pandemic in our country, were compared with the features of 27 patients with new-onset type 1 diabetes diagnosed in the previous year.

Results:
Twenty-three (58.9%) of 39 patients presented with DKA in the pandemic group, while 7 (25.9%) of 27 patients presented with DKA in the pre-pandemic group (P = 0.008). A significant increase was also noted in the severe presentation in the pandemic group (P = 0,019). The decrease in HbA1C at the end of 3 months was significantly higher in the pandemic group.

Conclusion:
Evaluation of patients with new-onset type 1 diabetes before and after pandemic showed a significant increase in the rates of severe DKA.
A study on normalization of hypothyroxinemia in neonates below 34 weeks of gestation
Authors: Gaonkar Seema , Shenoi Arvind , Sathyanarayana Santhosh Olety , Namachivayam Arun Kumar , Raja D. Malathi , Rao Nilesh 
Published: November 2022

Objectives:
The aim of the study was to estimate the time required for normalization of hypothyroxinemia of prematurity in neonates below 34 weeks of gestation.

Material and Methods:
A retrospective study was conducted in neonates born below 34 weeks of gestation, between January 2015 and December 2016. Data were collected on free thyroxine (fT4) and thyroid-stimulating hormone (TSH) levels, tested on days 3, 14, 28, and 42. Gestational age, birth weight, use of antenatal steroids, mechanical ventilation, and various preterm morbidities, along with development at 18 months of corrected age, were comparatively analyzed in neonates with and without hypothyroxinemia. The median time for normalization of fT4 in all these variables was estimated.

Results:
On day 3, low fT4 was noted in 69 (37.7%) out of 183 neonates born below 34 weeks of gestation; all had normal TSH levels. Hypothyroxinemia showed statistically significant association with gestational age, birth weight, antenatal steroid use, respiratory distress syndrome, invasive ventilation, shock, sepsis, patent ductus arteriosus (PDA), anemia during stay in neonatal intensive care unit, and development at 18 months. Median time for normalization was 14 days in most of the neonates, and 28 days in those with <28 weeks of gestational age, weight of <1000 g and with shock, anemia, and PDA. Two infants with hypothyroxinemia received therapy with levothyroxine at 6 weeks for a short duration, as TSH was high.

Conclusion:
Hypothyroxinemia of prematurity takes 14–28 days to normalize based on maturity, weight, and illnesses. This study recommends serum fT4 testing at 2 weeks of life, provided congenital hypothyroidism was ruled out by 3–4 days of life, using direct blood spot card metabolic screening.
Experimental and Numerical Study on the Composite Column Behavior: Loess Soil Reinforced by Concrete-Stone Column
Authors: Salam Mahmood A. , Wang Qiyao , Huang Jinbo 
Published: November 2022

Stone columns are an effective approach to improving the bearing capacity of weak soils, which has led to increased interest in the improved soil method being further developed and expanded. In addition, enhancing the bearing capacity of stone columns has recently received great attention. This paper studies the effects of embedded concrete parts on the stone columns' bearing capacity and bulging failure. Moreover, arranging solutions to the problem of bulging failure and reduced bearing capacity of stone columns and understanding the stone columns' failure after reinforcement by comparing the results. Stone columns are either embedded in a solid concrete part or unreinforced were examined using large-scale laboratory experiments, and numerical simulation was performed using ABAQUS. The models test with a scale factor of 1:7 was employed. The results demonstrated that using a concrete part on the top of the stone column greatly increases its bearing capacity and the efficiency of the surrounding soil. Concrete-stone columns (CSCs) show stress concentration ratio (n) enhancement and significant resistance to bulging failure deformation. The concrete-stone column shows an enhancement related to increasing the concrete part length; also, the CSCs stiffness increases the surrounding loess soil capacity. The horizontal stresses of CSCs demonstrate the type of column failure behavior; the column may fail due to shear stress in a long concrete part case. Doi: 10.28991/CEJ-2022-08-10-01 Full Text: PDF
Ultimate Load of Different Types of Reinforced Self-Compacting Concrete Columns Attacked by Sulphate
Authors: Muhammed N. , Shihab L. , Sakin S. 
Published: November 2022

In this study, the effects of the partial immersion of sulphate attack on the ultimate load capacity of reinforced self-compacting concrete (SCC) columns and the sulphate attack resistance improvement using silica fume, steel fibres, and the combination of silica fume and steel fibres were assessed. Twelve short circular self-compacting reinforced concrete columns (0.150 m in diameter and 0.7 m long) were cast and divided into groups according to (1) the three acid-attack groups. The first group was tested without an acid attack (control). The second group was tested after 1 month of exposure to 2% acid. The final group was tested after 1 month of exposure to 4% acid and was then (2) subdivided according to the type of casted concrete. The first group was cast with SCC. The second group was cast with SCC and silica fume (0.1% of the cement weight). The third group was cast with SCC and 1% volume fraction steel fibres. The fourth group was cast with SCC silica fume and 1% volume fraction steel fibre. All columns were tested by axial loading. The ultimate load was increased by 42% with silica fume, 190% with steel fibres, and 238% with silica fume and steel fibres. Exposure to 2% and 4% acid reduced the ultimate loads of the columns casted with SCC by 23% and 47%, the columns casted with SCC and silica fume by 34% and 37%, the columns casted with SCC and steel fibres by 69% and 78%, and the columns casted with SCC, silica fume, and steel fibres by 72% and 79%, respectively. Based on the results, using silica fumes improved sulphate resistance, and using steel fibres enhanced sulphate resistance at an acceptable ratio. Furthermore, the mix with silica fume and steel fibres improved sulphate resistance at a good ratio. We encountered several problems in this study. The partial immersion of sulphate affected the strain in both concrete and steel. Future studies using different immersion ratios are recommended. Doi: 10.28991/CEJ-2022-08-10-04 Full Text: PDF
Evaluation of Factors Influencing Maritime Dangerous Cargo Transport Accidents-Induced Crew Fatalities and Serious Injuries
Authors: Eski Özge , Tavacioglu Leyla 
Published: November 2022

Maritime dangerous cargo transport accidents can lead to crew fatalities and serious injuries. This paper focuses on these accidents to evaluate the factors involved in these losses. To that end, the relevant reports of 2000–2020 maritime dangerous cargo transport accidents recorded in the Marine Casualties and Incidents (MCI) module of the International Maritime Organization’s Integrated Shipping Information System (IMO-GISIS) database were analyzed. Six initial events in six basic ship operations were determined. This paper combined the entropy weight and Grey relational analysis methods to analyze the involved factors and evaluate the extent of influences of each initial event in various ship operations. The entropy weight (EW) method was applied to determine the weights of basic ship operations. The grey relational analysis method was applied to calculate the correlational degrees of the initial events. Most crew fatalities and severe injuries occur during bunkering, berthing, and mooring operations. Occupational accidents and fires/explosions are the most influential factors; more specifically, occupational accidents during sailing, cargo loading/unloading, anchoring, berthing, and mooring operations and fires/explosions during bunkering operations are most likely to lead to crew fatalities and serious injuries. The results of this paper can aid stakeholders in improving the required strategies to ensure the safety of seafarers during maritime dangerous cargo transport. Doi: 10.28991/CEJ-2022-08-10-05 Full Text: PDF
The Implementation of Smart Mobility for Smart Cities: A Case Study in Qatar
Authors: Tahmasseby Shahram 
Published: November 2022

This paper contributes to building a systematic view of the mobility characteristics of smart cities by reviewing the lessons learned from the best practices implemented around the world. The main features of smart cities, such as smart homes, smart infrastructure, smart operations, smart services, smart utilities, smart energy, smart governance, smart lifestyle, smart business, and smart mobility in North America, Asia, and Europe are briefly reviewed. The study predominantly focuses on smart mobility features and their implications in newly built smart cities. As a case study, the modern city of Lusail located in the north of Doha, Qatar is considered. The provision of car park management and guidance, real-time traffic signal control, traffic information system, active-modes arrangement in promenade and busy urban avenues, LRT, buses, taxis, and water taxis information system, and multimodal journey planning facilities in the Lusail smart city is discussed in this study. Consequently, the implications of smart mobility features on adopting Intelligent Transportation Systems (ITS) will be studied. The study demonstrates that the implementation of Information and Communication Technologies (ICT) when supported by Intelligent Transportation Systems (ITS), could result in making the most efficient use of existing transportation infrastructure and consequently improve the safety and security, mobility, and the environment in urban areas. The findings of this study could be considered an initial step in the implementation of Mobility-as-a-Service (MaaS) in cities with advanced public transportation such as Doha, the capital of Qatar. Doi: 10.28991/CEJ-2022-08-10-09 Full Text: PDF
THE EFFECTS OF COBRA CARDIOTOXINS ON THE PAPILLARY MUSCLE AND LANGENDORF PERFUSED RAT HEART ARE NOT ASSOCIATED WITH ADRENALINE RELEASE
Authors: Averin A. , Tyurin F. , Samodurova K. , Starkov V. , Andreeva T. , Utkin Yu. 
Published: November 2022

In a study of the effects of cobra cardiotoxins on myocardial tissue, both right ventricular (papillary muscle) and left ventricular contractility (isovolumic recording of left ventricular pulse pressure during Langendorff perfusion of the heart) were assessed. In papillary muscle, both toxins, at a concentration of 5 μg/mL, caused short-term increases in contractility to 200±25% and 171±15% for CTX-1 and CTX-2, respectively, at the point of maximum effect. At the same time, for CTX-1 and CTX-2, the time to peak tension (TPT) increased from 104±2 to 111±2 and from 96±2 to 104±5 ms, the relaxation time to 50%(TR50%) from 64±4 to 70±6 and from 64±6 to 69±7 ms, and the relaxation time to 95%(TR95%) from 163±10 to 190±22 and from 148±16 to 155±20 ms, respectively. This significantly differs from the positive inotropic effect of the β-adrenomimetic isoproterenol (170±31%), which causes acceleration of TPT from 106±5 to 89±4 ms, TR50% from 58±6 to 43±4 ms, and TR95% from 145±15 to 90±14 ms. When the whole heart was exposed to cardiotoxins, an increase in contractility was also observed, followed by its suppression and contracture, in contrast to isoproterenol, which caused a steady increase in contractility coupled with an increase in heart rate. Pretreatment of papillary muscles with the β-blocker propranolol
(10 μM) did not prevent the development of cardiotoxin effects, but completely blocked the effects of isoproterenol. Our data indicate that the temporary increase in contractility under the action of cardiotoxins is not associated with the release of endogenous adrenaline, but rather is caused by changes in calcium homeostasis in cardiomyocytes.