bluuebunny/crossref_metadata_2025 huggingface dataset:
Sustainable Reuse Strategies of Enterprise Financial Management Model Following Deep Learning Under Big Data
Authors: Ta Na , Gao Bo
Published: April 2022

The study aims to help enterprises to formulate a financial sustainable development strategy. A financial crisis forecast system based on deep learning (DL) is proposed to assist enterprises in checking their financial bills in time, knowing about their financial situations, formulating corresponding strategies, and realizing financially sustainable development. First, the relevant theories of financially sustainable development and DL are reviewed. Second, a long short-term memory (LSTM) neural network model based on DL is implemented and the normal sample data are compared with the unbalanced sample data. Finally, the performance of the model is analyzed according to the experimental results. The experiments show that the performance of the financial crisis forecast system is the best when the time step is T-3. The accuracy rate of the LSTM model is more than 93%, and the highest value of AUC (area under the curve) is 93.67%. The AUC value of the LSTM neural network model is compared with that of the fully connected neural network model and logistic regression model.
The Analysis of Global RMB Exchange Rate Forecasting and Risk Early Warning Using ARIMA and CNN Model
Authors: Liang Feng , Liang Feng , Zhang Hongxia , Zhang Hongxia , Fang Yuantao , Fang Yuantao
Published: April 2022

The purposes are to predict exchange rate fluctuations more accurately and enhance Chinese enterprises’ ability to avoid exchange rate risks. Renminbi (RMB) exchange rate fluctuation’s prediction methods are studied based on data mining technology. The Auto-Regressive Integrated Moving Average (ARIMA) model is introduced first using a modeling method that combines linear and nonlinear models. The linear prediction is obtained by the ARIMA model’s application in the RMB exchange rate’s dynamic fluctuation analysis. The nonlinear residual prediction is obtained by integrating the ARIMA model with the convolutional neural network (CNN) algorithm. The RMB exchange rate fluctuations’ influence mechanism on China’s economic growth is explored by theoretical analysis and empirical research. The US dollar’s daily central parity rate (USD) data against the RMB from September 2015 to March 2019 are selected for model verification, obtaining the exchange rate’s logarithmic return sequence (RUSD).
Tacere o rivelare? Segreto professionale e nursing
Authors: Di Pietro Maria Luisa
Published: April 2022

Il segreto professionale è un valore fondamentale per l'etica e la deontologia applicati al nursing, come per le altre professioni sanitarie. L'infermiere/a ha sempre il dovere di tacere su quanto è venuto a conoscere durante l'esercizio della propria professione e tale obbligo si fonda sul diritto del paziente all'intimità e alla riservatezza. Il divieto alla rivelazione del segreto professionale, da distinguere dalla trasmissione del segreto, è stato recepito sia dai Codici di Deontologia Professionale, sia dalle leggi dei paesi occidentali. Vi sono però delle situazioni, non ultimo l'AIDS, in cui l'obbligo al segreto si presenta in forte contrasto con la salvaguardia del bene comune. Ci si chiede infatti se il diritto individuale alla privacy possa essere violato dal timore di un danno - in questo caso il diffondersi di una malattia attualmente incurabile - a un terzo innocente.
Table of Contents Vol 21, No 1 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available.
The midwives’ experiences of the use of obstetric triage and obstetric triage tool during labour in Bojanala district
Authors: Tukisi Kagiso P. , Temane Annie , Nolte Anna
Published: April 2022

Background: Obstetric triage (OBT) is a standardised procedure, which plays a vital role in identifying women with obstetric risks upon admission for labour worldwide. In the last few years, considerable attention has been paid to perinatal problem identification programmes, and it has been determined that the inconsistent use of OBT delays midwives’ responses to both existing and potential clinical problems amongst women in labour. This delay results in negative and serious perinatal outcomes that could have been prevented. This study was conducted to explore and describe midwives’ experiences with OBT in Bojanala district.Aim: This study aimed to explore and describe midwives’ experiences with OBT in Bojanala district.Setting: This study was conducted in Bojanala district of the North West Province. Two public healthcare facilities were selected where midwifery care and OBT services are rendered.Methods: A qualitative, descriptive, explorative research design was followed. Nine purposefully sampled midwives participated in a one-on-one in-depth interview. Data were analysed using Collaizi’s descriptive method based on the themes and categories that emerged.Results: Three themes emerged. Midwives experienced the OBT tool to be inadequate; and that the low staff number contributes to an imbalance in the midwife–patient ratio. Midwives were also dissatisfied with less support they receive from their management.Conclusion: The study highlighted midwives’ experiences of the use of OBT, as presented through their lived experiences. The midwives experienced challenges, which hindered them from practicing OBT to the best of their abilities.Contribution: The study highlighted challenges experienced by midwives regarding OBT, which directly influence the outcomes of pregnancy and labour.
Table of Contents Vol 77, No 1 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available.
Table of Contents Vol 77, No 3 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available.
Table of Contents Vol 14, No 1 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available
Table of Contents Vol 2 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available.
Table of Contents Vol 19 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available.
Table of Contents Vol 23, No 1 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available.
Table of Contents Vol 17, No 1 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available.
Table of Contents Vol 42, No 1 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available.
Table of Contents Vol 42, No 2 (2021)
Authors: Office Editorial
Published: April 2022

No abstract available.
The Quality of Life of Stroke Survivors in the Indian Setting
Authors: Dhandapani Manju , Joseph Jaison , Sharma Suresh , Dabla Surekha , Varkey Biji P. , Narasimha Venkata L. , Varghese Abin , Dhandapani Sivashanmugam
Published: April 2022

Background:

The significant burden of stroke on the mortality rates of developing countries, including India, is well-documented in the literature. However, robust data regarding the aggregates of evidence on the quality of life (QOL) of stroke survivors is limited.

Objective:

To gather relevant information for policymakers on the QOL of stroke survivors based on observational studies conducted in the Indian setting.

Methods:

We searched PubMed, Scopus, and Google Scholar for studies conducted in the Indian setting. The methodological quality of each study was scored, and data were extracted from the published reports. The risk of bias assessment was conducted based on the JBI Critical Appraisal Checklist criteria. The relevant data regarding QOL were analyzed by a random effects model using R software.

Results:

16 studies were included in the systematic review in which the majority of the studies recruited study participants in the hospital-based setting with an average duration of 3-6 months following the stroke episode. Our findings suggest that the pooled mean quality of life in the four dimensions of the World Health Organization Quality of Life instrument (WHOQOL-BREF) were ranged from 46.86 to 61.37 and the overall Stroke Specific Quality of Life scale (SS-QOL) mean score was 157.16. There was a significant inconsistency among the included studies as heterogeneity was high (I2 >97%).

Conclusion:

Assessment of the quality of life among stroke survivors is a crucial step to predict the illness' imposed burden and ascertain the effectiveness of the treatment. The present meta-analysis elucidates the aggregate estimates of quality of life and contributes to the research on the quality of life following a stroke in an Indian context.
Respiratory Dysfunction in Parkinson's Disease
Authors: Sampath Meghashree , Bade Geetanjali , Goyal Vinay , Srivastava Achal K. , Jaryal Ashok K. , Deepak Kishore K. , Talwar Anjana
Published: April 2022

Background:

Parkinson's disease (PD) is a neurodegenerative disease perceived as a motor disorder. It is most commonly associated with autonomic dysfunction, affecting multiple systems. This altered autonomic control might be reflected by a parallel change in the airway caliber of these patients.

Aim:

To correlate the pulmonary impairment in patients with Parkinson's disease with the underlying dysautonomia.

Materials and Methods:

A total of 30 patients with Parkinson's disease participated in the study. Heart rate (HR) variability was recorded for 5 min to assess the autonomic dysfunction, followed by impulse oscillometry (IOS) and spirometry. IOS being an effort independent technique uses sound waves at different frequencies (5–25 Hz) to measure the airway impedance.

Results:

There was a significant decrease in SDSD (6.60 (10.18–6.01) vs. 12.22 (13.95–11.30); P = 0.04), RMSSD (6.59 (10.17–5.50) vs. 12.20 (13.93–11.28); P = 0.04), and total power (315.8 (506.3–120.7) vs. 771.3 (799.0–643.6); P = 0.04) in stage II as compared to stage I. Resistance at 20 Hz (R20) was found to be positively correlated with SDSD (r = 0.40, P = 0.04), RMSSD (r = 0.40, P = 0.04), and HF (r = 0.41, P = 0.03).

Conclusion:

Amongst the PD population, any changes in the parasympathetic component (responsible for bronchoconstriction) due to the underlying dysautonomia might be reflected as increased airway resistance in the pulmonary system.
Preference and Satisfaction with Cancer Institute Quality of Life Questionnaire, (QLQ) V. II and EORTC QLQ-C30 Tamil version
Authors: Athikesavan Sasikala , Elangovan Vidhubala , Chidambaram Sundaramoorthy , Veeraiah Surendran
Published: April 2022

Background:

Quality of life (QoL) is an important clinical outcome in oncology and various tools are available for its assessment. The Cancer Institute QoL Questionnaire, Version II (CI-QoL II) is a questionnaire standardized for use in the Indian setting.

Objectives:

This study was aimed at evaluating the preference for and satisfaction with CI-QoL II and the European Organization for Research and Treatment of Cancer QoL Questionnaire Core 30 (EORTC QLQ-C30) (Tamil version) among patients with cancer.

Materials and Methods:

This study was conducted in the Department of Psycho-Oncology of the Cancer Institute (WIA), Chennai, India, in patients with cancer between September and October 2017. Participants were administered the CI-QoL II and EORTC QLQ-C30, questionnaires 15 min apart, and a debriefing interview was conducted to explore relevant, confusing, or upsetting items.

Results:

A total of 60 participants were included in the study. The mean age was 38 years (range, 18–60). CI-QoL II was preferred by 43% of the patients and EORTC QLQ-C30 by 20%. Around 85% of patients reported satisfaction with both questionnaires, 12% with CI-QoL II, and 3% with EORTC QLQ-C30. In EORTC QLQ-C30, items on daily activities (10%) and leisure activities (10%) were reported as confusing; impact on family (1.7%), social life (1.7%), and financial life (1.7%) were reported as upsetting; need for rest (5%), irritability (5%), daily activities (13.3%), and leisure activities (18.3%) were reported as irrelevant. In CI-QoL, items on dependency on medication (5%) were reported as confusing, spousal support (6.7%), and sex life (5%) were reported as upsetting, and dependency on medication (23.3%), sex life (31.7%), and spousal support (16.7%) were reported as irrelevant.

Conclusion:

Over twice the number of patients prefer the CI-QoL II questionnaire to EORTC QLQ-C30; more patientsare satisfied with CI-QOL II. The CI-QoL II obtains more information on the QoL of patients to facilitate psychological counseling in the clinical setting, whereas EORTC QLQ-C30 is more appropriate in eliciting responses without bias.
Working goal of Brazilein sappan wood as a candidate for SARS-coV-2 antivirus drug against spike (S) glycoprotein, papain-like proteinase, and main protease
Authors: Kurniawan Entuy , Krihariyani Dwi
Published: April 2022

Brazilein sappan wood, played by Spike (S) glycoprotein, Papain-Like proteinase (PLpro), and Main protease (Mpro), is expected to be a candidate for the antiviral drug SARS-CoV-2, which can inhibit viral attachment to the human body, replication, and transcription processes. The aim of this study was to predict in silico, using the comparative drug hydroxychloroquine, the working goal of brazilein sappan wood as a candidate for the antiviral drug SARS-CoV-2 against protein S, PLpro, and Mpro. The approach used is the in silico docking test using the computer program Molegro Virtual Docker. Receptor used by protein S, Protein Data Bank (PDB) code: 6M0J, NAG_601[E] ligand; PLpro, PDB code: 7JIT, Y95_501[A] ligand; and Mpro, PDB code: 1WOF, I12_1145[A] ligand. Data analysis was carried out by comparing the docking bond energies between the ligands at the target receptor. Silico test results for protein S: ligand bond energy NAG_601 [E] = −59.4555, brazilein = −71.5537, hydroxychloroquine = −79.3704; PLpro protein: Ligand bond energy Y95_501 [A] = −129.561, brazilein = −94.9761, hydroxychloroquine = −100.984; Mpro protein: Ligand bond energy I12 1145 [A] = −141.135, brazilein = −96.6169, hydroxychloroquine = −104.88. The above test results indicate that brazilein sappan wood has potential as a SARS-CoV-2 drug candidate, has a stable bond, and that the biological activity of the compound is stronger against S protein than the proteins of PLpro and Mpro.
Antidiabetic and antihyperlipidemic effects of Premna spinosa bark in experimental animal models
Authors: Rout Rama Chandra , Panda Prasanna Kumar , Behera Lelin , Panda Santosh Kumar , Pattnaik Gurudutta , Bhattacharya Sanjib , Kar Biswakanth
Published: April 2022

The purpose of the study is to evaluate the antidiabetic and hyperlipidemic potential of stem bark extract of Premna spinosa (Lamiaceae), by using streptozotocin (STZ)-nicotinamide (NA)-induced diabetic and triton-induced hyperlipidemic models in albino rats. The blood glucose, total cholesterol, and triglyceride levels were determined in STZ-NA-induced diabetic and triton-induced hyperlipidemic rats, as per the respective protocols. It was found that there is the dose dependent and significant reduction in foregoing parameters on the administration of extract from Premna spinosa stem bark at the doses of 200, 400, and 800 mg/kg body weight to diabetic and hyperlipidemic rats. From these observed results it may be inferred that the stem bark of Premna spinosa possesses remarkable antidiabetic and antihyperlipidemic properties.
On Some Peri-Mediterranean Lower Cretaceous Dasyclad Species (Calcareous Algae; Dasycladales) Previously Assigned to Different Genera
Authors:   Croatian Geological Survey, Zagreb, Croatia, Sokač Branko
Published: April 2022

The taxonomic position of some dasyclad species which were previouslyassigned to the same taxon or, alternatively, were assigned todifferent genera by different authors, is discussed and revised, respectively.The material described and figured as Cylindroporella lyrataMASSE & LUPERTO-SINNI is shown to be heterogeneous (alsopartly described as Salpingoporella robusta SOKAČ) and some figuredsections are shown to possess new characteristic features. Theseforms are therefore singled out and described as Biokoviella n.gen.with two species: B. robusta (SOKAČ) n.comb. and B. gusici n.sp.Macroporella aptiensis SOKAČ is shown to represent the infertile(sterile) forms of Neomeris cretacea STEINMANN and, consequently,has to be regarded as the younger objective synonym of the latter.New material, with clearly visible morphological characteristics,has enabled the “resurrection” of the controversial genus KorkyrellaSOKAČ & VELIĆ, 1981, and its species, K. texana (JOHNSON),which was originally invalidly described.
Diagenesis of Upper Cretaceous Rudist Bivalves, Abu Roash Area, Egypt: A Petrographic Study
Authors:   Department of Geology, Faculty of Science, Alexandria University, Mansour Ahmed Sadek M.
Published: April 2022

Upper Cretaceous rudist buildup from the Abu Roash area, Egypt, is characterised by floatstone to rudstone textures. The low diversity of rudist types, the abundant fine-grained carbonate matrix, and the presenceof some coral heads suggest that the investigated buildup was developed under warm, relatively quiet, somewhat protected water conditions, in a shallow shelf area or open lagoon.The rudist shells underwent different types of diagenetic alteration(e.g. cementation, neomorphism, partial silicification, and compaction).Different types of calcite cements are recorded: (a) early marine micritic and bladed cement, (b) early meteoric isopachous and equant calcite, and (c) late meteoric vug-filling calcite of coarse crystalline texture after partial dissolution of the shells. Stabilization of the bimineralic shells took place within a meteoric phreatic milieu, where the aragonitic shell layers were dissolved or recrystallized to more stable diagenetic calcite and the calcitic layers also suffered some recrystallization.Silicification of the shell components is the more important diageneticevent. It postdates the early meteoric diagenetic equant calcite cement and occurred before the precipitation of the late meteoric diagenetic vug-filling cement. Megaquartz and fibrous chalcedony partially replaced the shells. The silica was probably derived from different sources, pressure-solution of quartz and transformation of clay minerals during later compaction of underlying siliciclastic rocks and/or dissolution of silica-producing organisms such as silica sponge spicules and radiolaria. Silicification possibly occurred within a mixing zone environment where meteoric water, which is the carrier of silica, mixed with marine water producing a solution supersaturated with quartz and undersaturated with respect to CaCO3 minerals.
Two-dimensional gravity waves at low regularity II: Global solutions
Authors: Ai Albert , Ifrim Mihaela , Tataru Daniel
Published: April 2022

This article represents the second installment of a series of papers concerned with low
regularity solutions for the water wave equations in two space dimensions. Our focus here is on
global solutions for small and localized data. Such solutions have been proved to exist in Ionescu–
Pusateri [Invent. Math. 199 (2015)], Alazard–Delort [Ann. Sci. Éc. Norm. Supér. (4) 48 (2015)],
Hunter et al. [Comm. Math. Phys. 346 (2016)], and Ifrim–Tataru [Bull. Soc. Math. France 144
(2016)] in much higher regularity. Our goal in this paper is to improve these results and prove
global well-posedness under minimal regularity and decay assumptions for the initial data. One key
ingredient here is represented by the
balanced cubic estimates
in our first paper. Another is the
nonlinear vector field Sobolev inequalities, an idea first introduced by Ifrim–Tataru [Ann. Sci. Éc.
Norm. Supér. (4) 52 (2019)] in the context of the Benjamin–Ono equations.
Integral $p$-adic Hodge filtrations in low dimension and ramification
Authors: Li Shizhang
Published: April 2022

Given an integral

p

-adic variety, we observe that if the integral Hodge–de Rham spectral sequence behaves nicely, then the special fiber knows the Hodge numbers of the generic fiber. Applying recent advancements of integral

p

-adic Hodge theory, we show that such a nice behavior is guaranteed if the

p

-adic variety can be lifted to an analogue of second Witt vectors and satisfies some bound on dimension and ramification index. This is a (ramified) mixed characteristic analogue of results due to Deligne–Illusie, Fontaine–Messing, and Kato. Lastly, we discuss an example illustrating the necessity of the aforementioned lifting condition, which is of independent interest.
Victoires de Wajdi Mouawad: de la défenestration à l’espoir collectif
Authors: Giacomazzi Enzo
Published: April 2022

Victoires of Wajdi Mouawad : when defenestration becomes a collective hope

Victoire, a student at the National Conservatory of Dramatic Art, committed suicide when she was only twenty-four years old. This death, inspired by Greek tragedies, reveals a gesture that is both heroic and symptomatic of an era. In his play, Wajdi Mouawad questions the depth of the deadly gesture of suicide as well as fate of death. By analyzing the funeral rites evoked in the play, we will see how Victoire's friends engage in a process of idealizing death, making Victoire a modern heroine. The gesture of death transforms into that of a gesture of hope, leading them towards a surge of life itself.
Angoisse(s) salacrienne(s). Réappropriation de motifs expressionnistes dans L’Archipel Lenoir et Histoire de rire d’Armand Salacrou
Authors: Ziółkowski Sebastian
Published: April 2022

Salacrou’s anguish. Reappropriation of some expressionist motifs in L’Archipel Lenoir and Histoire de rire by Armand Salacrou

This paper aims to highlight the exploitation of some expressionist motifs in two plays by the French playwright Armand Salacrou (1899-1989), L’Archipel Lenoir and Histoire de rire throughout the painting of a metaphysical anxiety. In those pieces we can see realisation of such expressionist concepts as the war of brains (bataille des cerveaux), irradiation of the author’s I which conditions an antinaturalistic and caricatured expression of anxiety in an axiologically misstructured world. We can also appreciate elaboration of the expressionist motif of psychological murder which is an illustration of empoisoned relations between man and woman who do seek to destruct and moulder each other.
MAXVISION Tablet: A Perfect Formulation Combines Powerful Antioxidants Helps to Reduce Eye Fatigue in Computer Professionals
Authors: Shukla Govind , Subrahmanyam C. , Yajnick Dipashree , Yamuna Mantipally , Kumar C.J. Sampath
Published: April 2022

Age related macular degeneration (ARMD), Cataract and dry eye syndrome is multifactorial diseases associated with several risk factors and it is responsible for 50% of blindness worldwide. At present, the only remedy for cataract is surgery. However the incidence is so large that the available surgical facilities are unable to cope up with the problem because of postoperative complications such as posterior capsular opacification, endophthalmitis and uncorrected residual refractive error. In India alone around 30 million people suffer from cataract. Thus, the expense and unavailability of surgery mean that non-surgical medical therapy or nutritional treatment to inhibit the formation or slow the progression of cataracts is an important goal in experimental eye research to benefit patients and reduce the huge economic burden. The present Article reviews the role of MAX VISION tablet for eyes to prevent ARMD, Cataract and dry eye syndrome.
Role of Employee Grievance Management on Job Commitment and Organizational Justice
Authors: Dhanabhakyam Dr. M. , Monish P
Published: April 2022

Employee grievance management is considered as the most significant human resource strategy for improving organizational effectiveness and commitment. Dissatisfied employees are critical for every organizations. This dissatisfaction would leads to employee employer conflicts, job burnout and employee turnover. Hence it is essential to design effective grievance management strategies in companies. Information technology employees have been facing many challenges and problems in their workplace. Such challenges lead to reporting of employee grievances. Management should take care of those grievances and redress it within a short time span. This paper made an attempt to measure the perception of information technology employees on grievance management strategies and analyzed the role of grievance management on job commitment and organizational justice. Findings proved that employee grievance management made a significant impact on job commitment and organizational justice.
Estimation of Reservoir Porosity Using Seismic Post-Stack Inversion in Lower Indus Basin, Pakistan
Authors: Jalal Sadiq , Rehman Hamza , Alam Shams Ul , Wahid Abdul
Published: April 2022

Seismic post-stack inversion is one of the best techniques for effective reservoir characterization. This studyintends to articulate the application of Model-Based Inversion (MBI) and Probabilistic Neural Networks (PNN) for theidentification of reservoir properties i.e. porosity estimation. MBI technique is applied to observe the low impedancezone at the porous reservoir formation. PNN is a geostatistical technique that transforms the impedance volume intoporosity volume. Inverted porosity is estimated to observe the spatial distribution of porosity in the Lower Goru sandreservoir beyond the well data control. The result of inverted porosity is compared with that of well-computed porosity.The estimated inverted porosity ranges from 13-13.5% which shows a correlation of 99.63% with the computed porosityof the Rehmat-02 well. The observed low impedance and high porosity cube at the targeted horizon suggest that it couldbe a probable potential sand channel. Furthermore, the results of seismic post-stack inversion and geostatistical analysisindicate a very good agreement with each other. Hence, the seismic post-stack inversion technique can effectively beapplied to estimate the reservoir properties for further prospective zones identification, volumetric estimation and futureexploration.
Seam Modelling and Reserve Calculation for Lignite Field in Adana-Tufanbeyli (Turkey)
Authors: Toraman Sedat , Şensöğüt Cem
Published: April 2022

Since the first investment in mining operations is very high, so, it is absolutely important to model the field in three dimensions for appropriate planning and cost analysis. The whole data set belonging to the geological, geophysical and drilling exploration studies carried out in the field should be evaluated as a package. In the modelling phase, the computer-aided tri-dimensional mining software has been used instead of the classical reserve calculation methods being utilized in previous years. Thus, more realistic and shorter results are achieved. In the present work, three-dimensional seam modelling of the Adana-Tufanbeyli (Turkey) lignite field was carried out. In modelling, the coal horizon of the field was examined. Then, the sub-seam levels in the horizon were determined and after examining their geometric relationships with each other, three sub-seams were defined. Seam composites were prepared by the downhole method to make the analysis results of different sizes uniform. It is possible to make block quality estimations, which will be the basis for reserve calculations, by creating variograms in different directions. Variograms are first created in the vertical direction and then in the horizontal direction respectively, to obtain the necessary parameters. The nugget effect and structural distance parameters were obtained from the created variogram models. To assign quality estimation values on the block model, the Kriging method was used when the number of data was sufficient, and the inverse distance method was applied, when it was insufficient. As a result of this modelling study, a total of 355.617.194 tons of lignite reserves with an average calorific value of 1.153 Kcal/kg were determined in the field.
Applications of Geospatial Techniques to Identify Landscape Changes and Urban Expansion of Dera Ghazi Khan City, South Punjab-Pakistan
Authors: Khurshid Mareena , Shirazi Safdar Ali
Published: April 2022

A temporal analysis of landscape change patterns and consequent evaluation of urban expansion has been studied for the Dera Ghazi Khan city which is developing fast since 2000 as an emerging metropolis of South Punjab. The geospatial techniques particularly remote sensing augmented with GIS are vital tools and are mostly used in studying landscape changes and decision making for sustainable urban development. Four Landsat images (1991, 2001, 2011 and 2021) obtained from the free web of GLFC have been analysed. A supervised classification algorithm was applied to all images and results have been presented in both tabular and graphic forms. Present study, focuses upon two land-use classes i.e. built up and open areas, which will be monitored by land-use patterns of Dera Ghazi Khan city during 1991 to 2021 using satellite images. The graphical depiction of all the landscape changes, which have taken place in D. G. Khan city in the form of tables and maps provides detailed information about the degree and ratio of urban expansion and the changes in land use that occurred during the stipulated period.The classification was based on four categories i.e., urban land, bare soil, vegetation, and water; while maps were prepared to present the temporal changes in D. G. Khan city. A total of 52 sq./kms areas was selected for this study designated as the Dera Ghazi Khan city. According to the results, 33% of the urban area has been expanded in Dera Ghazi Khan from 1991 to 2021 and 19% vegetation cover has been reduced. It is a very alarming situation that agricultural land is decreasing because of urban expansion. The results revealed the significance of remote sensing and GIS in evaluating landscape changes.
Comparison of the SCS-CN and Hydrograph Separation Method for Runoff Estimation in an Ungauged Basin: The Izmit Basin, Turke
Authors: Topçuoğlu Meral Erdoğan , Karagüzel Remzi , Doğan Ahmet
Published: April 2022

The separation of surface runoff and base flow is a very specific problem in water balance calculations,particularly if there is not enough measured flow data. In this study, the SCS-CN method is used to estimate the surfacerunoff in the ungauged Izmit Basin. The CNs are estimated using the Hydrologic Soil Groups map, based on soil data ofthe General Directorate of Rural Services of Turkey and land use obtained from the CORINE-2006 database for differentAMCs. The surface runoff was computed using the SCS-CN method for the ungauged Izmit Basin that corresponds to17% and 21% of the rainfall, i.e. 134 mm (for Kocaeli Meteorological Station; rainfall=804 mm) and 171 mm (forSakarya Meteorological Station; rainfall=820 mm). According to SCS-CN method estimates, approximately 41-42% ofthe annual rainfall in the Izmit Basin directly contributes to the total streamflow, and 21-25% of it contributes to baseflow and unmeasured infiltration. To compare the results of the SCS-CN method along with hydrograph separationmethod, the gauged Yuvacık Dam Sub-Basin, which is hydro-meteorologically similar to the Izmit Basin, was selected.The results showed that 16% of the rainfall in the Yuvacık Dam Sub-Basin became surface runoff. Also, it was foundthat about 42% of the annual rainfall in the Yuvacık Dam Sub-Basin directly contributes to the total streamflow and 23%of it contributes to the base flow and unmeasured infiltration. These results confirm that the ratio of surface runoffobtained by the hydrograph separation method in the Yuvacık Dam Sub-Basin matches with the ratio of surface runoffcalculated using the SCS-CN method for the entire Izmit Basin.
Petrographic and Physiomechanical Investigation of Late Cretaceous Kawagarh Formation Kahi Section, Nizampur Basin
Authors: Sajid Syed Muhammad Waseem , Ahmad Mukhtar S , Khan Emad Ullah , Sabir Maria
Published: April 2022

The late Cretaceous Kawagarh Formation has been investigated in terms of field observation, and petrographic analysis, to understand the petrography and its impact on the geotechnical properties. The Kawagarh Formation is well exposed among the upper Indus Basin, and has been studied by various workers in different aspects. Kawagarh Formationexposed in Kahi section of Nizampur Basin has been selected in this study to know the behavior of carbonate rocks for engineering purposes. Lithologically, this formation is composed of thick to medium bedded, highly fractured limestone, marls, and dolomitic limestone which has undertaken diagenetic alteration including dolomite, calcite veins, and stylolites. Followed by petrographic analysis which reveals that the Kawagarh limestone is mostly fossiliferouscomprised of a large number of planktonic foraminifera fossils like Globotruncana Hilli and Globotruncana Linneana fossils. Furthermore, to know the impact of petrographic minerals on engineering behavior, mechanical properties in terms of uniaxial compressive strength (UCS) and uniaxial tensile strength (UTS) were also computed by using a universal testing machine (UTM). The resultant mechanical values lie in the strong compressive strength and suggest their usage for various construction purposes. Aggregate degradation tests including water absorption, specific gravity, aggregate impact value, Los angles abrasion, and soundness was also computed according to the International standard organization, ASTM (American Society for testing materials) and British standard. The aggregate values of the Cretaceous Kawagarh Formation are within the defined standard limits and can be used as an aggregate source for different construction engineering projects.
One Way Coupled FSI Analysis to Design the Restricted Intake Manifold for a Single Cylinder SI Engine
Authors:   Aligarh Muslim University, INDIA, AHMAD NAFEES , Varshney Mehul ,   Department of Mechanical Engineering, Aligarh Muslim University, INDIA, Farooqi Mohammad ,   Mechanical Engineering Department, Aligarh Muslim University, INDIA, Varshney Nakul ,   Aligarh Muslim University, INDIA
Published: April 2022

"Interactions between fluids and structures occur in a wide range of engineering problems. The solutions to these problems are based on the relationship with continuum mechanics, and mostly these problems are solved with the help of numerical methods. Due to complex geometries, fluid physics, and fluid-structure interactions, addressing such issues is a computational challenge. The geometrical design of an air intake manifold is essential for the excellent performance of the IC engine. As per the SAE rule, the air intake manifold of the gasoline-fueled car should have a circular restriction of 20 mm, limiting the power of the engine. This research work aims to design an intake system that compensates for the power loss to the maximum extent and reduces the engine noise of the intake for the single-cylinder Honda CBR 250R engine. A 3D model of the actual manifold is designed to modify the intake manifold. With that geometry, Computational Fluid Dynamics (CFD) simulations were performed to optimize each section, including De Laval Nozzle, plenum, and runner, in such a way that there will be minimal pressure drop during the airflow. The flow was modeled as steady, Newtonian, and Incompressible. Continuity and Momentum conservation equations and the k-epsilon turbulence model were solved to obtain mean flow characteristics. Then, Lotus Engine Simulation software was used to optimize the size of the plenum to get the maximum power at higher RPM and maximum torque at lower RPM to enhance the performance of the car on the racing track. The runner length is tuned with the help of the Acoustics and Induction system theory to provide the ram effect in the naturally aspirated engine to achieve maximum volumetric efficiency. The exact injector position and fuel injection angle were decided by Prototype testing for proper air-fuel mixing. Finite Element Analysis (FEA) has been performed to determine the thickness and type of material for the manifold manufacturing to bear the backfire condition (pressure generated up to 3 bar) due to mistimed spark event during the frequent racing. The Formula SAE is an abstraction of the Automotive industry with more than 600 Formula Student combustion teams worldwide. The students face difficulty designing as there is a dearth of literature that systematically walks them through the designing steps. This research work walks the students chronologically by developing an optimized intake manifold."
Start-Up Transient Vibration Analysis and Control of a Vehicle Equipped with a 3-Cylinered Engine
Authors:   China Automotive Engineering Research Institute Co. Ltd, CHINA, Jin Yan
Published: April 2022

In this paper, the excessively transient Vibration phenomenon of a vehicle equipped with a 3-cylindered 1.2T engine was studied during start-up process. Firstly, the transient vibration of the vehicle was measured at the driver seat position in the car. The peak value of the acceleration along x direction was prominent, and the subjective feel during the start-up process was unacceptable and more aggressive then the same class competitor with 1.5T I4 engine. Secondly, the main excitons including combustion force and inertia force during start-up of 3-cylindered engine were analysed, and the approximation relationship between powertrain motion and car body vibration was derived. And then a dynamic model of powertrain system with mounting system was built to simulate the start-up vibration of the vehicle under toque and inertia force, the simulation results coincided well with the experiment. Based on this model, the relationships between force input and vibration output of the car body was discussed, the results showed that the combustion induced torque fluctuation transfer though the mounting system to the car body was the main contribution of the transient vibration during engine start-up process, and the couple between fore-aft mode (along the x direction) and the pitch mode (revolution around crankshaft) of the powertrain mounting system led to a deterioration vibration. Finally, a transfer function H (Ï‰) was defined to describe transmission of the torque fluctuation to the powertrain acceleration at the centre of gravity. By optimization of the mounting system to minimize the amplitude of H (Ï‰), the peak value of transient vibration was reduced by about 15% in physical test. And start-up procedure calibration was adjusted, by increasing the cranking speed from 210 rpm to 300rpm, using a more powerful starter (1.6kW), and abating the combustion torque fluctuation by limiting the combustion pressure, the peak value of the seat vibration was effectively reduced by 40% totally, and the subjective feeling achieved a significant improvement.
Modal analysis of Structural Vibration for Electric-drive Motor built in Transmission
Authors:   Honda R&D Co., Ltd. Automobile Center, JAPAN, Saito Toshihiro
Published: April 2022

"When a vehicle is cruising, unpleasant noise in the high-frequency band between 4 kHz and 5 kHz can occasionally be heard at the centers of front seats in the vehicle cabin. To search for the generation source of this noise, a study of the correlation between the cabin noise and airborne noise at the outer surface of the transmission, and an analysis of vibration transfer paths in the interior of the transmission were conducted. The results indicated that the source was the 0th-order breathing mode unique to electric-drive motors. For making it possible to predict this at the desk, vibrational analysis method for an electric-drive motor comprising laminated electrical steel sheets and segmented coils was proposed. Material property data for the electrical steel sheets and the coils was employed unmodified in the electric-drive motor vibrational analysis model. In addition, Laminate electrical steel sheets and the coils were modeled accurately. The analysis model defined the small sliding contact between the layers and also the contact between the electrical steel sheets and the coils taking into consideration. The contact stiffness between the electrical steel sheets and the coils was defined. First, the results of an eigenvalue analysis of the electrical steel sheets in isolation and of an experimental modal analysis were compared. The natural frequencies and eigenmodes in both sets of results corresponded well, with a difference of within 2%, up to 6 kHz. Next, vibrational analysis was conducted using an electric-drive motor model in which the coils were inserted into the laminated electrical steel sheets. the coil model used a rectangular cross-section, and defined equivalent material properties using a finite element analysis model in order to make it possible to accurately reproduce twist stiffness and bending stiffness. A comparison of the results of the analysis conducted using the electric-drive motor model and the experimental modal analysis using an electromagnetic shaker demonstrated the phenomenon of the peaks of natural frequencies exceeding 2 kHz becoming unclear. In addition, eigenmodes up to 5 kHz, in particular the 0th-order mode at 4.2 kHz, were accurately reproduced. Finally, this electric-drive motor was mounted into a transmission case and the modal analysis of structural vibration was conducted. Consequently, the tendency of the vibration level between the simulation and the measurement agreed well."
Study and Reduce the Interior Noise Roughness During Acceleration
Authors:   China Automotive Engineering Research Institute Co. Ltd, CHINA, Jin Yan
Published: April 2022

Sound quality is a very important performance for a new development vehicle. Poor sound quality will downgrade the subjective evaluation to the production by customers. In this paper, the roughness of interior noise of a SUV with a 1.5L turbo-charged gasoline engine was found during acceleration from 1500r/min to 4000r/min. By subjective evaluation and spectrum analysis, the noise around 275Hz was found contribute most to the noise roughness, and the half order noise around the frequency band represented a modulation phenomenon. Then, all possible noise vibration sources and transfer paths were studied separately. Firstly, the interior noise was measured on the condition that inlet and exhaust noise sources were deadened. the results showed that air-born noise had merely no contribution to the interior roughness. So the half orders noise was judged to be structure born noise. Secondly, the vibration of powertrain mounts were measured both on the engine side and body side, the test results showed that the spectrum features of vibration on transmission mount bracket coincided well with the interior noise spectrum feature. The results proved that the half orders vibration of engine transfer to the car body though gearbox mount. Finally the mode of powertrain was measure by impacting test, and there was a global torsional mode frequency of powertrain about 275Hz, and the position of transmission was sensitive to this mode. So it can be concluded that the combustion force caused the resonance of powertrain torsional mode, and the vibration transferred into cabin though transmission bracket given rise to the interior roughness. Two feasible methods were used to reduce the vibration transfer from engine to the car body. The first one was to optimize the powertrain mount system by reducing the dynamic stiffness of transmission mount rubber. Then dynamic stiffness of transmission mounting attachment points on car body side was enhanced by adding welding points. And the test results proved that the roughness of interior noise was effectively decreased and sound quality was improved during acceleration.
EXPERIENCE IN DEVELOPING MODELS OF ARTIFICIAL GASTROINTESTINAL TRACTS OF ANIMALS
Authors:   Don State Technical University, Russia, Lukyanov Alexandr D. , Donskoy Danila Yu. , Vernezi Miroslav A. , Mazanko Maria S. , Studennikova Svetlana G.
Published: April 2022

For „in-vitro“ experimental study of the effect of probiotics on the development of microbiota of poultry and domestic animals, a line of „SHIME“ – like models of artificial gastrointestinal tracts in the form of complexes of miniature bioreactors with microcontroller control and monitoring systems was created. Experience in operating this equipment in an experimental study of the effect of prebiotics on the development of intestinal microbiota has allowed to establish a number of features and limitations, which are brought in this paper. The peculiarities of setting up peristaltic pumps, magnetic mixers and the choice of connecting tube configuration are considered.
Cultural Diversity Interactive Multimedia to Improve Cultural Literacy and Citizenship of Elementary School Students
Authors: Sari Pratiwi Kartika , Mutiara Cut
Published: April 2022

The problem in research schools is the lack of interest in reading. This research aims to describe the development of interactive multimedia cultural diversity of my nation, know the feasibility of developing interactive multimedia products of my nation's cultural diversity, knowing the effectiveness of interactive multimedia development of my nation's cultural diversity. The method used is RD (Research and Development) with Hannafin Peck models that have needs analysis, design, development, or implementation stages. The study was conducted on grade I-VI elementary school students. Media expert test results score 81.4% with excellent criteria; experts score 96.25% with perfect measures; linguists score 97.5% with ideal standards. Based on the experts' assessment, this medium is very viable. While the effectiveness test conducted with the t-test with pretest-posttest obtained a score of 0.000 sig lower than 0.05, this proves a significant difference between pretest and posttest results to improved cultural literacy and student citizenship with an average score of 96.47%. So it can be said that interactive multimedia includes very effective criteria as a medium of learning and improves cultural literacy and student citizenship.
Protective Effect of Selenium against Methotrexate Induced Hepatotoxicity
Authors:   MO at 129/15L Mian Channu, Ul Hassan Dr. Hafiz Arslan
Published: April 2022

Introduction: The liver is the largest internal organ by percent weight in the human body and has crucial functions, including cholesterol production, intermediary metabolism, hormone synthesis, bile and urea production and drug detoxification. Objectives: The main objective of the study is to analyse the Protective effect of selenium against methotrexate induced hepatotoxicity in mice. Material and methods: This descriptive study was conducted in Jinnah Hospital Lahore during 2020. Selenium and all chemical reagents of analytical grades were purchased from Sigma Chemical Co. (St. Louis, Mo, USA). The dose of MTX diluted in water (50% 1ml/kg of body weight of Mice were applied twice a week for six weeks to induced hepatocellular injury determined by liver function tests. The mice were maintained under pathogen-free conditions with air conditioning, a 12-hr light/12-hr dark cycle, and %55 humidity. Results: Results shows that a significant increase in serum enzymes (ALT, AST, ALP) and significant decrease in total protein was observed in all groups receiving MTX for the induction of hepatic injury. Mice receiving combination therapy of selenium along with MTX shows a time course recovery towards normalcy. The highest value of ALT (94.83 IU/L), AST (73.21 IU/L) and ALP (157 IU/L) were recorded in Mice receiving MTX for hepatic injury. The lowest values (63.67, 51.49 and 139.95 IU/L) was recorded in group treated with MTX+ Se (200mg/kg b.w) but both the groups differed non significantly and shows the same trend but a decreasing trend in serum enzymes (ALT 32.85%), (AST 29.67%) and (ALP 11.40%). Conclusion: It is concluded that selenium supplementation in MTX treated rats elicited a reduction in the toxic effects of the pesticide by improving the studied parameters, which was confirmed by the biochemical analysis of serum.