bluuebunny/crossref_metadata_2025 huggingface dataset:
Integral Inequalities Related to Wirtinger’s Result
Authors: Dragomir Silvestru Sever
Published: March 2022

In this paper we establish some natural consequences of the Wirtinger integral inequality. Applications related to the trapezoid unweighted and weighted inequalities, of Fejér’s inequality for convex functions and of Grüss’ type inequalities are also provided.
On A Certain Subclass Of Analytic Functions Defined By Linear Operator
Authors: Venkateswarlu Bolineni , Reddy Pinninti Thirupathi , Popade Santosh M. , Ingle Rajkumar N.
Published: March 2022

In this paper, we introduce and study a new class k − ŨS

s
(a, c, µ, γ, t) of analytic functions in the open unit disc U with negative coefficients and obtain coefficient estimates, neighborhoods and partial sums for functions f belonging to this class.
The Fekete-Szego Theorem for Close-to-convex Functions Associated with The Koebe Type Function
Authors: Rathi Sidik , Soh Shaharuddin Cik
Published: March 2022

This paper deals with the class S containing functions which are analytic and univalent in the open unit disc U = {z ∈ ℂ : |z| < 1}. Functions f in S are normalized by f(0) = 0 and f′(0) = 1 and has the Taylor series expansion of the form

f

(
z
)

=
z
+

∑

n
=
2

∞

a

n

z

n

f\left( z \right) = z + \sum\limits_{n = 2}^\infty {{a_n}{z^n}}

. In this paper we investigate on the subclass of S of close-to-convex functions denoted as C

gα
(λ, δ) where function f ∈ C

gα
(λ, δ) satisfies

Re

{

e

i
λ

z

f
′

(
z
)

g
α

(
z
)

}

{\mathop{\rm Re}\nolimits} \left\{ {{e^{i\lambda }}{{zf'\left( z \right)} \over {g\alpha \left( z \right)}}} \right\}

for

|
λ
|

<

π
2

\left| \lambda \right| < {\pi \over 2}

, cos(λ) > δ, 0 ≤ δ < 1, 0 ≤ α ≤ 1 and

g

α

=

z

(

1
−
α
z

)

2

{g_\alpha } = {z \over {{{\left( {1 - \alpha z} \right)}^2}}}

. The aim of the present paper is to find the upper bound of the Fekete-Szego functional |a
3 − µa
2
2| for the class C
g

α
(λ, δ). The results obtained in this paper is significant in the sense that it can be used in future research in this field, particularly in solving coefficient inequalities such as the Hankel determinant problems and also the Fekete-Szego problems for other subclasses of univalent functions.
Measuring Inflation under Pandemic Conditions
Authors: Diewert W. Erwin , Fox Kevin J.
Published: March 2022

National statistical offices have faced unprecedented circumstances in the modern history of economic measurement. There were dramatically changing consumer expenditure patterns due to pandemic conditions, with lockdowns and fear of infection making many goods and services unavailable. We examine the implications of changing relative expenditures for the construction of Consumer Price Indexes, with special reference to the treatment of prices for unavailable products. We conclude that for many purposes, it would be useful for statistical agencies to establish a continuous consumer expenditure survey. We also examine various other practical pandemic induced CPI measurement problems.
Price Index Numbers under Large-Scale Demand Shocks–The Japanese Experience of the COVID-19 Pandemic
Authors: Abe Naohito , Inoue Toshikatsu , Sato Hideyasu
Published: March 2022

We investigate the prices and quantities of face masks when the 2020 COVID-19 pandemic was particularly serious to understand the impact of demand shocks on the cost of living index (COLI). Using a recently developed index number formula that is exact for the constant elasticity of substitution utility function with variable preferences, we quantified the degree of demand shock caused by the pandemic. Our empirical analysis revealed that shifts in preferences during the pandemic were so large that the COLI with variable tastes became very different from the standard superlative indexes. While the prices of face masks decreased in the Fisher index in May 2020 by 0.76% per week, the COLI increased by 1.92% per week.
Dysregulation of miR-144-5p/RNF187 axis contributes to the progression of colorectal cancer
Authors: Gao Zhuo , Jiang Junnan , Hou Lijian , Zhang Bin
Published: March 2022

Background and Objectives

RING finger protein 187 (RNF187) belongs to RING domain-containing E3 ligases family, which was recently reported to be involved in oncogenesis and development of several cancers. This research aims to clarify the role of RNF187 in colorectal cancer (CRC) development.

Methods

The expression of RNF187 and miR-144-4p were determined by quantitative real-time polymerase chain reaction (qRT-PCR). The levels of RNF187 protein were assessed by western blot analysis. Cell Counting Kit-8 (CCK8) assay, clonogenic assay, cell scratch test and transwell assay were used to determine the proliferation, migration and invasion of CRC cells in vitro. The binding of miR-144-5p and RNF197 mRNA was validated by luciferase reporter assays. Tumor-bearing nude mice were used to determine CRC cells growth in vivo.

Results

RNF187 expression significantly increased in CRC specimens and cell lines compared to normal colon tissues and normal colonic mucosa cell line, respectively. Upregulation of RNF187 expression was inversely correlated to poor prognosis in CRC patients. In addition, knockdown of RNF187 expression inhibited the proliferation, migration, and invasion but promoted the apoptosis of CRC lines Caco-2 and SW480 cells. Further studies validated that RNF187 was the direct target of miR-144-5p. The expression of miR-144-5p was downregulated in CRC tissues, which was negatively correlated to the expression of RNF187. Restoration of miR-144-5p significantly inhibited the progression of CRC cells and its anti-tumor effects could be abrogated by overexpression of RNF187.

Conclusion

Our findings demonstrate the deregulation of miR-144-5p/ RNF187 axis in CRC, as well as its role in regulation of the tumor progression, thus providing a novel therapeutic strategy for CRC treatment.
Dosimetric verification of multi-tumor target cases treated with SRS HyperArc technique using EBT3 radiochromic films
Authors: Juda Aleksandra , Fillmann Marta , Kukołowicz Paweł
Published: March 2022

Introduction: Dosimetric verification of Intensity Modulation Radiotherapy treatment plans is usually carried out before the start of treatment. It is of special importance in the case of highly modulated plans, such as plans for patients in whom many tumors are irradiated simultaneously. In this work, we present the results of the verification of multi-target plans performed with the stereotactic HyperArc technique.

Material and methods: The results of dosimetric verification of 35 patient plans in the head are presented. The results are analyzed in terms of the number of tumors, and the distance of the tumor from the isocenter. Measurements were carried out with the film method. The gamma methodology was used (3%/2mm).

Results: The results showed a very good agreement between measurements and calculations.

Conclusions: No dependence of the verification result on the number of targets and the distance between the center of tumor and isocenter was found.
Risk Factors Associated with In-Hospital Mortality in Iranian Patients with COVID-19: Application of Machine Learning
Authors: Shafiekhani Sadjad , Rafiei Sima , Abdollahzade Sina , Souri Saber , Moomeni Zeinab
Published: March 2022

Introduction: Predicting the mortality risk of COVID-19 patients based on patient’s physiological conditions and demographic characteristics can help optimize resource consumption along with the provision of effective medical services for patients. In the current study, we aimed to develop several machine learning models to forecast the mortality risk in COVID-19 patients, evaluate their performance, and select the model with the highest predictive power.

Material and methods: We conducted a retrospective analysis of the records belonging to COVID-19 patients admitted to one of the main hospitals of Qazvin located in the northwest of Iran over 12 months period. We selected 29 variables for developing machine learning models incorporating demographic factors, physical symptoms, comorbidities, and laboratory test results. The outcome variable was mortality as a binary variable. Logistic regression analysis was conducted to identify risk factors of in-hospital death.

Results: In prediction of mortality, Ensemble demonstrated the maximum values of accuracy (0.8071, 95%CI: 0.7787, 0.8356), F1-score (0.8121 95%CI: 0.7900, 0.8341), and AUROC (0.8079, 95%CI: 0.7800, 0.8358). Including fourteen top-scored features identified by maximum relevance minimum redundancy algorithm into the subset of predictors of ensemble classifier such as BUN level, shortness of breath, seizure, disease history, fever, gender, body pain, WBC, diarrhea, sore throat, blood oxygen level, muscular pain, lack of taste and history of drug (medication) use are sufficient for this classifier to reach to its best predictive power for prediction of mortality risk of COVID-19 patients.

Conclusions: Study findings revealed that old age, lower oxygen saturation level, underlying medical conditions, shortness of breath, seizure, fever, sore throat, and body pain, besides serum BUN, WBC, and CRP levels, were significantly associated with increased mortality risk of COVID-19 patients. Machine learning algorithms can help healthcare systems by predicting and reduction of the mortality risk of COVID-19 patients.
Effects of Bismuth Oxide Nanoparticles, Cisplatin and Baicalein-rich Fraction on ROS Generation in Proton Beam irradiated Human Colon Carcinoma Cells
Authors: Sisin Noor Nabilah Talik , Akasaka Hiroaki , Sasaki Ryohei , Tominaga Takahiro , Miura Hayato , Nishi Masashi , Geso Moshi , Mat Nor Fazila Che , Razak Khairunisak Abdul , Rahman Wan Nordiana
Published: March 2022

Introduction: Proton beam radiotherapy is an advanced cancer treatment technique, which would reduce the effects of radiation on the surrounding healthy cells. The usage of radiosensitizers in this technique might further elevate the radiation dose towards the cancer cells.

Material and methods: The present study investigated the production of intracellular reactive oxygen species (ROS) due to the presence of individual radiosensitizers, such as bismuth oxide nanoparticles (BiONPs), cisplatin (Cis) or baicalein-rich fraction (BRF) from Oroxylum indicum plant, as well as their combinations, such as BiONPs-Cis (BC), BiONPs-BRF (BB), or BiONPs-Cis-BRF (BCB), on HCT-116 colon cancer cells under proton beam radiotherapy.

Results: It was found that the ROS in the presence of Cis at 3 Gy of radiation dose was the highest, followed by BC, BiONPs, BB, BRF, and BCB treatments. The properties of bismuth as a radical scavenger, as well as the BRF as a natural compound, might contribute to the lower intracellular ROS induction. The ROS in the presence of Cis and BC combination were also time-dependent and radiation dose-dependent.

Conclusions: As the prospective alternatives to the Cis, the BC combination and individual BiONPs showed the capacities to be developed as radiosensitizers for proton beam therapy.
Association between early risk factors and level of functioning at age seven in children at familial risk for schizophrenia or bipolar disorder - The Danish High Risk and Resilience Study VIA 7
Authors: Bundgaard Anette Faurskov , Hemager Nicoline , Gantriis Ditte Lou , Steffensen Nanna Lawaetz , Burton Birgitte Klee , Ellersgaard Ditte , Christiani Camilla Jerlang , Spang Katrine S. , Carlsen Anders Helles , Bliksted Vibeke , Plessen Kerstin J. , Jepsen Jens Richardt Møllegaard , Nordentoft Merete , Mors Ole , Thorup Anne A. E. , Greve Aja Neergaard
Published: March 2022

Background

Facing multiple risk factors, relative to single risk factor exposure early in life can have great implications for negative child development.

Objective

We aim to examine whether the prevalence of early risk factors is higher among children with familial high risk for schizophrenia or bipolar disorder compared to controls. Further, to investigate the association between number of early risk factors and level of functioning at age seven, and whether this possible association is different in children with familial high risk compared to controls.

Method

The Danish High Risk and Resilience Study VIA 7 is a population-based cohort study of children of parents diagnosed with schizophrenia (N = 202), bipolar disorder (N = 120) and controls (N = 200). We conducted a semi-structured anamnestic interview with the child’s primary caregiver to assess early risk factors from pregnancy to age four. We used the Children’s Global Assessment Scale to measure level of functioning at age seven.

Results

13 out of 17 risk factors were more prevalent in children at familial high risk for schizophrenia and 7 out of 17 risk factors were more prevalent in children at familial high risk for bipolar disorder compared to controls. Level of functioning decreased 2.7 (95% CI, 2.2; 3.3)-points per risk factor, but the association was not significantly different across the three groups (p = 0.09).

Conclusions

Our results showed that children at age seven with familial high risk for schizophrenia or bipolar disorder experience a greater number of early risk factors. A higher number of early risk factors were associated with lower level of functioning at age seven. However, the association is not different for children with familial high risk or controls.
Spatial Planning as Public Space: Some Issues of Local Democracy raised by the Extension of the École hôtelière in the Lausanne peri-urban area
Authors: Piraud Mischa , Pattaroni Luca , Kaufmann Vincent
Published: March 2022

Based on a field survey on the conflicts regarding the extension of the Ecole Hôtelière de Lausanne, this text discusses the production of public space. These controversies make possible an understanding of the production process of peri-urban space in terms of residential aspirations and negotiation mechanisms. This investigation allows us to understand the articulation of the two forms of public space – as publicity and as a set of freely accessible places – and the questions of local democracies related to them.
Effect of water on the glass transition and properties of solid-state pharmaceutical formulations
Authors:   , Bogdanova Ekaterina
Published: March 2022

The aim of this thesis was to increase our knowledge of the glassy state and the glass transition phenomenon and to evaluate the effect of water on the glassy state. To accomplish this, investigations were focused on the amorphous sucrose-water (paper I, II, III), trehalose-water (paper I), maltodextrin-water (paper I), and lysozyme-sucrose-water (paper IV) systems. We studied temperature-induced and isothermal glass transition (I, II, III, IV), as well as the impact of water on the activation energy of the relaxation process (II). It has been shown that water undergoes glass transition with disaccharides, but in polysaccharides water dynamics is uncoupled from the polymer matrix. This results in differences in the water diffusion coefficient: water moves several orders of magnitude faster in the polymers than in disaccharides (I). Water reduces the activation energy of the relaxation process in the sucrose-water system (II). Attenuated water diffusion at sub-zero temperatures leads to a delay in water crystallization/melting in the sucrose-water system, which does not happen in a polysaccharide - water system (III). The Tg of the lysozyme-sucrose system increases with increasing lysozyme concentration, i.e., the DCp of the mixtures does not follow the prediction based on the properties of the pure components. Consequently, lysozyme does not modulate the glass transition of the sucrose matrix and the increase of the Tg of the mixtures is a result of the confinement of amorphous sucrose in the space between lysozyme molecules. The amorphous structure and unfolding of lysozyme in the presence of sucrose was investigated by DSC and SAXS. These data revealed an increase of the protein-protein distance upon addition of sucrose and upon heating, as a result of lysozyme unfolding (IV).
MENILAI EFEK MODERASI DARI TATA KELOLA PERUSAHAAN PADA HUBUNGAN INTELLECTUAL CAPITAL DAN KINERJA PASAR
Authors: Prasojo Prasojo , Shalihin Muhammad Yusuf
Published: March 2022

This study relates the relationship between Intellectual Capital (IC) and the company's market performance as moderated by corporate governance. The results of this study prove that the total value-added intellectual capital (VAIC) does not have a significant effect on the company's market performance. Partially only CEE has a significant positive effect on the company's market performance. HCE has a negative and significant relationship, meanwhile, SCE has a positive but insignificant correlation to the company's market performance. The samples used in this study were all companies included in the LQ45 index category in the 2015-2018 period. Statistical data processing is carried out through panel data testing with the fixed-effect method. The research contributes to potential investors in making investment decisions by considering the existence of IC and corporate governance as part of the investor analysis. The results of this study are also expected to provide empirical evidence about the relationship between IC, CG, and market performance in Indonesia. These findings will expand the IC literature in business operations in Indonesia concerning the role of IC on its direct impact on market performance. Contribution to regulators, disclosure, and presentation of IC is related to PSAK 19 which has been adopted from IAS 38.
Performance Analysis of Industrial WLAN Based on EDCA Scheme Defined in IEEE802.11e
Authors: Khuder Enaam F.
Published: March 2022

In the last few years wireless local area network (WLAN) technology and products have grownunusually. This growth has encouraged many researchers to employ WLAN technology in differentapplication Areas. Recently, using IEEE 802.11 WLAN in industrial automation applications is attractiveand more interesting. However, the currently used medium access mechanism makes WLANs nondeterministicand hence not suitable for industrial real-time traffic. Legacy IEEE 802.11 WLANs wereinitially designed for best effort traffic only and did not provide any QoS support for this kind of traffic.The new amendment IEEE 802.11e standard was introduced and ratified in 2005. It defines the concept ofa Hybrid Co-ordination Function (HCF) at the MAC layer for medium access control. HCF is acombination of HCF Controlled Channel Access (HCCA) with parameterized quality of service (QoS)and Enhanced Distribution Channel Access (EDCA) with prioritized QoS. Enhanced DistributionChannel Access (EDCA) is an enhanced version of Distributed Coordination Function )DCF( mechanismused in the original IEEE 802.11 WLAN. This paper analyze the performance of the EDCA in anindustrial automation network with real-time requirements by means of a simulation with the networksimulator OPNET 11.5 and compares the results with the DCF in terms of latency and throughput invarious scenarios.
Breast Tumor Classification Using SVM
Authors: Al-Khalidy Joanne H. , Al-Ne’ma Raid R.
Published: March 2022

Although there are several techniques that have been used to differentiate between benign andmalignant breast tumor lately, support vector machines (SVMs) have been distinguished as one ofthe common method of classification for many fields such as medical diagnostic, that it offersmany advantages with respect to previously proposed methods such as ANNs. One of them is thatSVM provide a higher accuracy, another advantage that SVM reduces the computational cost,and it is already showed good result in this work.In this paper, a Support Vector Machine for differentiation Breast tumor was presented torecognize malignant or benign in mammograms. This work used 569 cases and they wereclassified into two groups: malignant (+1) or benign (-1), then randomly selected some of thesesamples for training model while others were used for test. The ratios were 84.4.0% of acceptedfalse, 947142% of refused false. These results indicate how much this method is successful.
Studying of The Dynamic Behaviour and Control of Continuous Distillation Column
Authors: Ahmad Duraid F. , Khalaf Mohammad H.
Published: March 2022

The present work deals with studying the dynamic behaviour of continuous distillation traycolumn and implementing different type of control strategies for the separation of binarymixture composed of ethanol and water. Mathematical model of distillation column is derivedand designed by using Matlab program depending on the mathematical model derived to findtemperature response for many disturbances. The comparison between the experimental andtheoretical responses for temperature in top and bottom of distillation column for step change infeed flow rate, reflux ratio and feed weight fraction showed that the difference is simple. Thisstudy includes designing fuzzy logic controller which depending on some of logic rulesdepending on fuzzy sets and through trading from experimental works where designing thiscontroller by using Matlab program and applying it on dynamics model for two control schemeand tuning it by trial and error method. The Comparison between fuzzy logic and (PID) controlmethods is done for many disturbances and measure the controller performance by using meansquare error and integral square error that the result performance showed that the fuzzycontroller better than the conventional controller through fast access to the desired value andcancelling the disturbances.
Treatment of Suspended Materials in Water using Natural Coagulants
Authors: Yaqoub Rafe’a J. , Hameed Zeena A.
Published: March 2022

Coagulation, flocculation and sedimentation are widely used in water treatment to obtain puredrinking water. Thus, efforts have made to find alternatives to alum. In this study, Starch andDextrin have been chosen as natural coagulants. A set of experiments were carried out, conditionswere varied in (30-500 NTU), and (5-10) for the water turbidity and acidity pH ,respectively.The results showed that Lamella has the ability to increase the efficiency of sedimentation processin flocculation/settling tank due to reduction in surface loading and increasing in a retention time .Ithas also been observed that the efficiency of Lamella was ranged in (50-40%)compared with a Jartest that has efficiency between (60-50%).
Ecology in the Planning Of Traditional Neighborhood Unit -a Practical Study in a Selected Neighborhood in the City of Mosul
Authors: Sa’ed Maha A.
Published: March 2022

The Traditional Neighborhood Unit represents one of The cultural state of the Society. It isrelated to the environmental cases saving some chances, abilities, reducing power, controllingatmosphere, and providing comfort since the building is one element of the ecological systemand not a different and an isolated from the surrounding ecological systems.The problem of the current research is concentrated upon the lack of information on theabilities of the traditional neibourhood which help her to stay up to now. So the aim of theresearch is to find out the idea of ecological methodology. This has been accomplished throughsome environmental and planning point of view. Also it depends mainly on signs ofaccomplishing urban form concentrating on climatic attributes and environmental needs. Thispaper hypothesizes that accomplishing the ecological methodology needs having tools andmeans for the planning of the traditional neibourhood to control the climate challenges in citieswhere we have hot and dry climate. To achieve such an aim here, an analytical and observativeapproach together with an observation form have been adopted, to select such a sample is thenanalyzed and the ecological features have been identified. Also, the abilities which give thismodel planning resistance up to now have been found.
Removal of Some Hydrocarbon Pollutants from Baiji Oil Refinery Wastewater Using Granular Activated Carbon Column
Authors: Ibrahim Muzher M. , Jaddo Ibtisam A.
Published: March 2022

Petrochemical industry, specially oil refineries produces large quantities of wastewater that isstrongly polluted with hydrocarbon compounds. Although Baiji oil refinery has wastewatertreatment plant, it discharges water to Tigris river that is strongly polluted with hydrocarboncompounds that exceed the Iraqi permissible limits. Thus the aim of the present work is toremove phenol, parachlorophenol, and benzene from the wastewater of Baiji oil refinery usinggranular activated carbon(GAC)column. A laboratory scale apparatus is designed andconstructed in order to perform this study taking into account the ability to control the mostimportant parameters affecting adsorption process. Actual wastewater samples taken from thefinal discharge point of wastewater treatment unit of Baiji oil refinery are used to conduct allexperiments.The results indicated that these pollutants could be removed completely. Moreover, it indicatesthat breakthrough and exhaustion time are directly proportional with GAC thickness and inverselyproportional with pollutants concentration and liquid hourly space velocity (LHSV). The resultsshow that maximum breakthrough time is 39.26, 21.35, and 16.58 hours at LHSV of 0.5 hr-1 and35cm of GAC thickness for phenol, parachlorophenol, and benzene respectively. Thecorresponding minimum breakthrough time is 9.24, 5.23, and 6.08 hours at LHSV of 129 hr-1.However, the corresponding maximum exhaustion time is 49.6, 48.7, and 43.84 hours, while theminimum exhaustion time are 27.5, 16.54, and 10.89 hours. The results show that breakthroughtime for phenol is 27.23 hours when the phenol inlet concentration is 5.212 mg/l, it decreased to13.83 hours at inlet phenol concentration of 19.31 mg/l. The corresponding exhaustion time is68.83 and 37.22 hours. Other two pollutants have similar trend. Based on the experimental data,dynamic adsorption capacities are calculated and found to be increased with the increase ofpollutants concentration and LHSV. It is also found that calculated adsorption zone thickness isproportional with LHSV. The calculated maximum dynamic carbon adsorption capacity are 115.4,67.62, and 12.628 mg/g for phenol, parachlorophenol, and benzene respectively at LHSV of 129hr-1. The corresponding minimum capacity at LHSV of 0.5 hr-1 are found to be 1, 0.99, and 0.257mg/g. Calculated values of minimum and maximum adsorption zone thickness for the threepollutants at LHSV of 0.5 and 129 hr-1 are (0.0729, 0.1965, and 0.2176) and (0.2324,0.2118,and 0.1545)cm respectively.Application of the most famous the adsorption models shows that only Freundlich model givesexcellent agreement with experimental data. Finally, new three models are developed. The firstand second relate breakthrough and exhaustion time with LHSV, wastewater pollutantsconcentration, and GAC thickness while the third relates adsorption velocity with LHSV and inletpollutant concentration.
Alkaline Depolymerization of Polyethylene Terephthalate Plastic Waste
Authors: Abbas Ammar S.
Published: March 2022

Depolymerization reaction is considered one of the most significant ways of converting waste polyethylene terephthalate in to terephthalic acid. The water polyethylene terephthalate bottle waste was collected from different places in Baghdad. The collection step shows that there is plenty amount of polyethylene terephthalate suitable to be an important source of terephthalic acid production.PET plastic waste conversion to terephthalic acid by depolymerization process was examined. The effect of ethylene glycol amount, reaction time (up to 90 minutes) and reaction temperature (from 70 to 170° C) on the polyethylene terephthalate conversion was obtained.The kinetic study shows that the ordination of the depolymerization reaction of PET is first order irreversible reaction with 31103.5 J/mole activation energy.A 97.9 % terephthalic acid purity has been obtained by purification with N, N-dimethylformamide.
Analysis of Brushless DC Motor with Trapezoidal Back EMF with Matlab
Authors: Hussain Taha
Published: March 2022

The dynamic characteristics such as speed and torque as well as voltages and currents of pwm brushless DC motor inverter are analyzed with a MATLAB model. The contribution of external load torque and friction torque is monitored. The switching function technique is adopted for the current control of the embedded three phase inverter that drives the brushless DC motor. In switching functions the power conversions circuits can be modeled according to their functions rather than circuit topologies. Therefore, it can achieve simplification of the overall power conversion functions. The trapezoidal type (back emf) is used in the model as it has lower switching loss compared with sinusoidal type (back emf). Results show reliable time analysis for speed, torque, phase and line voltages and currents and the effect of current commutation is clearly observed.
Structural Behavior of Fibrous Reinforced Concrete Hollow Core One-Way Slabs Strengthening by C.F.R.P
Authors: Majeed Wasif K. , Joma’h Muyasser M. , Abdulrahman Mazin B.
Published: March 2022

A reinforced concrete hollow core one-way slab is one of the types of slabs used widely around the world in residential and industrial buildings to take advantage of them Economic and thermal insulation as well as to reduce the self-weight of the construction. The aim of the present study is to examine the structural behavior of the reinforced concrete hollow core one-way slabs reduce failure using the normal concrete and fibrous concrete and then strengthened using carbon fiber(CFRP)This study include molding of ( 6) specimens differ in terms of the voids volume (Vv) , volumetric percentage of steel fibers (
An Increasing of the Thermal and Internal Efficiency for Steam Power Plant by Using the Best Economic Method
Authors: Hussain Hisham A.
Published: March 2022

The present work is devoted by an experimental study for an important parameters to increasing the thermal and internal efficiency for a steam power plant by reducing the condenser pressure, but there is a problem in condenser performance which is, air inter to inside condenser prevents it to continue with the same production. The experimental work was conducted using the steam power plant (Didacta- Italia) made in the university of Damascus/ syria .This study aim to (1) Reducing the condenser pressure to increase the thermal efficiency, (2)The condenser efficiency must be constant with time by suction of air collection inside the condenser to make the quantities of air (inside and outside) is equal. By Reducing the condenser operating pressure to (0.45 bar, 0.40 bar, 0.35 bar, 0.30 bar, 0.25bar) with all the other parameters are constant. A computer program (Fortran 90) was used . After the measurements and calculations for each state of reduced condenser pressure were given , the thermal efficiency increased by ratio 4.3% and the internal efficiency increased by ratio 2.1 % when the condenser pressure reduced to 0.25bar. Also, the max. efficiency of condenser was 80.09 % with constant production by the continuo of air suction .The results are represented graphical and discussed. The inclusions dependent on the results of this study.
Dynamic Performance Analysis of Three Phase Induction Motor Using Matlab/Simulink Technique
Authors: Jasim Abdulsattar H. , Jasim Tahseen Z.
Published: March 2022

In this paper a good mathematical model for three phase induction motor using their electrical and mechanical equations which describe its operation and performance. The modern computational technique (Matlab/Simulink) has been used to study transient conditions of the motor. The behavior of the motor observed according to their speed, torque, stator current and rotor current by subjecting the motor to different conditions like, starting, sudden load, one phase disconnected, sudden increasing or decreasing the motor voltage and lightning effect. The model is used to investigate the effects of variation in the machine size on the dynamic performance, to select the appropriate motor for specific application. The simulation results show the activity of the modern technique in predicting the behavior of an induction motor under different operating conditions.
Computational Fluid Dynamics Modeling of Flow over Stepped Spillway
Authors: Irzooki Raad Hoobi , Mohammed Jowhar Rasheed , Ameen Afnan Salah
Published: March 2022

In present paper, the computational fluid dynamics (CFD - program Flow-3D) was used to analyze and study the characteristics of flow energy dissipation over stepped spillways. Three different spillway heights () (15, 20 and 25cm) were used. For each one of these models, three numbers of steps (N) (5, 10 and 25) and three spillway slopes (S) (0.5, 1 and 1.25) were used. Eight different discharges ranging (600-8500cm³/s) were passed over each one of these models, therefore the total runs of this study are 216. The energy dissipation over these models and the pressure distribution on the horizontal and vertical step faces over some models were studied. For verification purpose of the (CFD) program, the experimental work was conducted on four models of stepped spillway and five different discharges were passed over each model. The magnitude of dissipated energy on models was compared with results of numerical program under same conditions. The comparison showed good agreement between them with standard percentage error ranging between (-2.01 - 11.13%). Thus, the program Flow-3D is a reasonable numerical program which can be used in this study.Results showed that the energy dissipation increases with increased spillway height and decreased number of steps and spillway slope. Also, the energy dissipation decreases with increasing the flow rate. An empirical equation for measuring the energy dissipation was derived using the dimensional analysis. The coefficient of determination of this equation (R2) equals 0.766.
Comparative analysis of an option to conclude an agreement and an option agreement
Authors: Murdalov Deni Ruslanovich
Published: March 2022

In this paper, an option to conclude a contract and an option contract are considered in a comparative aspect. The object of the study is an option relationship or a relationship that develops as a result of the application of the norms of civil legislation on options. The subject of the study is the norms of the Civil Code of the Russian Federation governing the conclusion of an agreement on the granting of an option to conclude a contract and an option contract. The main purpose of the work is to compare the option to conclude an agreement and an option agreement, to identify common and distinctive features of the mechanisms under Articles 429.2 and 429.3 of the Civil Code of the Russian Federation. В В В  The scientific novelty of the study lies in the fact that in this paper a comparative analysis of the option to conclude a contract and an option contract is carried out. The norms governing the options constructions under consideration have been subjected to a detailed study and analysis. The results of the study, which reflect the scientific novelty of the work, are manifested in the differentiation of two adjacent options as common constructions. The paper considers the option to conclude a contract and an option contract in a comparative aspect, highlights the adjacent and distinctive features of both designs, concludes about the common purpose of option designs, about the features of mechanisms, as well as the need to improve Articles 429.2 and 429.3 of the Civil Code of the Russian Federation.
A. Hagerstrem's Legal Views: the Conflict of Idealistic Objectivism and Psychologism
Authors: Savenkov Dmitry Aleksandrovich
Published: March 2022

The subject of the study is the legal views of A. Hagerstrem, a Swedish philosopher, lawyer, founder of the intellectual trend in European legal science and epistemology, which has received the name of Scandinavian legal realism. The positions of this scientist constitute a significant milestone in the history of the philosophy of law of the twentieth century. At the same time, they remain poorly studied, both in Russian and in European literature. Among the few studies devoted to the study of the content and specifics of A. Hagerstrem's legal views, the similarities of his main positions with the ideas of phenomenological teaching are mostly uncritically reproduced, parallels are drawn with those movements in jurisprudence and philosophy that declared a struggle against metaphysics. Special attention is paid to the analysis of the nature of the conflict of principles of the concept of objective cognition and psychologism in law. The article presents brief results of the analysis of both the principles of the epistemological teaching of A. Hagerstrem, and provides a deeper analysis of the content of legal representations in comparison with traditional interpretations of his views. Moreover, the study demonstrated that the principles of the epistemological teaching of this scientist significantly contradicted the ideas of his so-called practical philosophy in the field of the study of law. The nature of the relevant conflict can be explained by an attempt to combine idealistic objectivism with a psychological approach to understanding law. The study contains the results of the analysis of A. Hagerstrem's legal ideas, which allow us to significantly clarify the nature and content of the views of this scientist in the recent history of legal thought.
The problem of the integrity of the new Russian system of scientific attestation (by the example of the requirements for a dissertation)
Authors: Egorov Sergey
Published: March 2022

The article is devoted to the issue of the integrity of the scientific certification system in modern Russia. After the elimination of the monopoly of the Higher Attestation Commission (HAC), the procedures for awarding academic degrees began to be regulated by a variety of different regulatory and legal acts. The growing variety of rules and regulations raises doubts about whether the system is still capable of ensuring equal rights and opportunities for all applicants for academic degrees. Using the example of the requirements for a dissertation for a degree, the article shows the similarities and differences that exist in different parts of this system. In the course of the study, three subsystems were identified within the system that have relatively similar requirements. The first subsystem is classical and special dissertation councils, directly controlled by the Higher Attestation Commission. The second system is formed by leading scientific and educational organizations that independently award academic degrees. The third subsystem includes spiritual educational organizations that are granted the right to award theological degrees recognized as equivalent to other academic degrees at the level of federal state educational standards. В В В В To consider each of these systems, the relevant requirements of federal legislation, local regulations of educational and scientific organizations that independently award academic degrees, as well as internal regulations of spiritual educational organizations were studied. A comparative analysis of normative and legal acts made it possible to trace how the integrity of the entire system of Russian scientific certification is ensured in the context of the diversity of its forms. In general, this system still remains comparable in terms of requirements for dissertations, but the rights and opportunities of applicants arising after their defense differ markedly depending on the place of defense.
Sozialstaat im Werden. Band 2. Schlaglichter auf Grundfragen
Authors: Tennstedt Florian , Ayass Wolfgang , Rudloff Wilfried
Published: March 2022

Die "Bismarckˈsche Arbeiterversicherung" entwickelte sich in kurzer Zeit zum weltweit beachteten Pioniermodell sozialpolitischer Absicherung. In zwei Bänden werden die formativen Jahre des deutschen Sozialstaats näher untersucht. Der zweite Band wirft einen Blick auf ausgewählte Probleme der frühen Jahre des deutschen Sozialstaats. Themen sind unter anderem die Rolle der Sozialbürokratie bei der Gesetzgebung, die sozialpolitischen Positionen von Bismarcks Gegnern im Reichstag und der Aufstieg sozialpolitischer Experten.
Treatment of refractory giant suprasellar arachnoid cyst by endoscopic expansion of a fenestrated stoma
Authors: Naito Nobuaki , Nonaka Masahiro , Miyata Mayuko , Ueno Katsuya , Kamei Takamasa , Asai Akio
Published: March 2022

Background:

Although endoscopic ventriculo-cysto-cisternostomy is considered to be effective for suprasellar arachnoid cysts, we encountered a giant suprasellar arachnoid cyst that recurred despite surgery using this technique.

Case Description:

The patient was a 9-month-old boy. Magnetic resonance imaging revealed a huge suprasellar arachnoid cyst extending from the suprasellar region to the anterior skull base and both middle cranial fossa. First, an endoscopic procedure was performed to open the cyst wall between the right ventricle and the cyst and between the cyst and the prepontine cistern. Although the cyst initially shrank, it recurred over the next 2 months, and hence, we performed another endoscopic surgery. At the second surgery, both the previously opened stomas were found to be occluded. To reopen the cyst wall between the ventricle and the cyst, multiple holes were made with monopolar electrodes, and forceps were used to connect the holes by grasping and twisting the cyst wall so that the stoma was much larger than at the previous surgery. Postoperatively, the cyst shrank and the patient’s head circumference stopped expanding.

Conclusion:

Following the treatment of large cysts, the stoma might become narrower as the cyst shrinks, resulting in obstruction. Using the technique reported here might prevent occlusion of large arachnoid cysts.
Almost Sure Convergence of The k-NN Regression Estimate under Mixing condition
Authors: Dema Ahmad Al-shakh, Mohamed Deribati, Ahmad Younso Dema Ahmad Al-shakh, Mohamed Deribati, Ahmad Younso
Published: March 2022

In this work we will establish almost sure convergence for k-nearest neighbor estimate of the regression function under some mixing conditions. Our results will extend some previous results in the i.i.d case to the dependent case. In addition, we will conduct a simulation study using R software program to display the importance and influence of the sample size (n) on behavior of the estimator. For this purpose, the mean squares error criterion (MSE) was used.
Building rhetorical thinking At Ali Ibn Abi Talib and Al-Hasan
Authors: Mariah Mohammed Halawani, Hani Farraj Ali Abu Bakr Mariah Mohammed Halawani, Hani Farraj Ali Abu Bakr
Published: March 2022

The Purpose of the study: The aim of the study was to highlight the construction of practical rhetorical thinking in the concepts of rhetoric by Imam Ali: `Rhetoric outlines ambiguities and reveals the defects of ignorance, in the simplest form of terms. While for Hussein, “rhetoric is the disclosure of statement of Mysterious wisdom, and an explanation of an issue”, “rhetoric is the distant approximation of wisdom in the simplest terms, by assuming that these concepts are linked to deduction, indications, and evidences. To discover the aspects of rhetoric and rhetorical deduction in these concepts and the extent to which, rhetoric is related to them, in terms of inference issues, understanding and comprehension. The study attempts to answer the question of whether the limit of the term rhetoric in the first generation includes the meaning of argument, influence and guidance through accomplishing and brevity. Methodology: the scientific method been utilised, through building on previous established knowledge, assuming that the concept of rhetoric since the first pioneer, are considered as eloquent, precious and comprehensive, solves problems and reveals new facts, eliciting that rhetoric is what the human mind require; wisdom, knowledge and experience. Themes: the point of the rhetoric limits from (Ali and Al-Hussien) view-points, in terms of reasoning, understanding, standards of comprehension and understanding, and related interpretive aspects of it.    How to read it through seeing the graphic cognitive system, linking issues of comprehension, persuasion, and influence. Besides, the Rhetorical functions and related understanding, clarity, conviction, and inferring and deducing techniques of meanings. Results: The results indicated that the concepts of rhetoric showed that the building of thinking has an integrated comprehensive conception, which aids in solving problems by clarifying the ambiguous meaning, revealing the knowledge cache, examining and explaining it with the appropriate easy, concise, and eloquent way. As the Rhetoric is an integrated, practical, intellectual approach, in an effectual conscious language.
Effects of Ion Adsorption on Graphene Oxide Films and Interfacial Water Structure: A Molecular-Scale Description
Authors: Carr Amanda , Kumal Raju , Bu Wei , Uysal Ahmet
Published: March 2022

Graphene oxide is a promising, emerging separation material, as it is durable, dispersible in water, and has naturally forming functional groups. Bulk studies using graphene oxide flakes have demonstrated impressive metal adsorption. However, little interfacial information about water and metal organization near graphene oxide is available. A mechanistic understanding of water and ions interactions with graphene oxide films is critical toward advanced separations, including improved sorption efficiency and membrane regeneration. We study metal ion and local water organization near graphene oxide thin films formed at the air/water interface. These films are not typical membranes and allow us to determine nanoscale information about the graphene oxide-water interface. We accomplish this with x-ray reflectivity (XR), x-ray fluorescence near total reflection (XFNTR), and vibrational sum frequency generation spectroscopy (SFG). These interface-specific techniques provide the electron density profile normal to the interface, number of adsorbed ions, and information about the orientational ordering and hydrogen-bonding network of interfacial water, respectively. Via XFNTR and SFG, we find that trivalent yttrium ions preferentially adsorb to graphene oxide and affect its structure, compared to divalent strontium and monovalent cesium ions. Two different interfacial water populations can be described, based on their hydrogen bonding strength, and the adsorbed ions affect these populations differently. These results provide fundamental information about ion and water organization at the interface and help address the large computational-experimental agreement gap for graphene oxide systems. Additionally, they are relevant for improved soft-scaffold graphene oxide membranes and downstream applications.