bluuebunny/crossref_metadata_2025 huggingface dataset:
An update on high temperature tantalum capacitor technology
Authors: West D. , Demcko R. , Messina R. , Stanziola A.
Published: October 2023

Developments and improvements in the materials, design and manufacturing of tantalum bulk capacitors

have resulted in new case sizes, improved ESR, higher operating voltages and temperatures.

This work discusses the basic design and manufacture of hermetic tantalum and wet tantalum capacitors

and the resulting high temperature performance offered by each technology.

Specifically, hermetic sealed tantalum capacitors offer a novel set of design options for the high

temperature designer. This technology, exhibits superior stability when exposed to high temperatures, high

humidity, and ambient atmosphere. The device is impervious to the typical capacitance drop common to

high temperature capacitor operation. Thus they enable potentially significant size reductions, lower

component counts, and reliability improvements in extremely high temperature applications, such as downhole

oil drilling.

Both electrical and physical comparisons are made between the characteristics of bulk stacked ceramic

capacitors, hermetic tantalum and wet tantalum devices across an operating range of -55°C to +230°C.

Lifespan and recommended de-ratings are presented.
Profile and Outcome of Prospective Non-Septic Lateral Sinus Thrombosis Patients from a Stroke Unit of a Developing Country
Authors: Mirza Abbas M. , Kulkarni Girish B. , Ramakrishnan Subasree , Mustare Veerendrakumar , Yadav Ravi , Gupta Arun K.
Published: October 2023

Background:

Due to effective treatment of middle ear infections there is a change in etiologies causing lateral sinus thrombosis (LST) and outcome. There is a paucity of literature describing homogenous group of patients with nonseptic LST (NS-LST).

Objective:

To describe the clinical profile, risk factors, outcome of patients of NS-LST seen at a single center from South India.

Methods and Materials:

Prospective, observational study of 100 patients of NS-LST patients, diagnosed by magnetic resonance imaging (MRI) seen at the stroke unit.

Results:

During 2 years, 100 patients of NS-LST (isolated: combined: 27:73) (male: female: 44:56), mean age: 31.45 ± 11.13 years, were seen. Subacute presentation (74%) with headache, seizures, focal deficits, and features of raised intracranial pressure were presenting features. Hyperhomocysteinemia (61%), anemia (57%), postpartum state (41%), OCP use (37%), and low VitB12 (32%) were commonly seen risk factors. Imaging with MRI compared withcomputerized tomography (CT) had better diagnostic sensitivity (100% vs. 67%), detection of parenchymal (81% vs. 67%)/hemorrhagic (79% vs. 74%) lesions, and cortical vein thrombosis (31% vs. 15.46%). Treatment with anticoagulation and supportive therapy resulted in good outcome (mRS (0-2)) at 3 months in 81%. There were four deaths, all during admission (one – isolated, three – combined) and 11 patients underwent decompressive surgery. Patients with low GCS level of sensoriumat admission, hemiparesis, combined LST, cerebellar involvement, and decompressive craniectomy had a poor outcome.

Conclusion:

This single-center large cohort study of NS-LST patients brings out the clinical features, risk factors (peculiar to developing countries), and the superiority of MRI in the diagnosis. Majority of patients have good outcome, with low mortality with 10% requiring decompressive surgery.
Lymphoplasmacyte-Rich Meningioma or IgG4-Related Disease
Authors: Zaidi Ariba , Chatterjee Debajyoti , Radotra Bishan , Mohindra Sandeep
Published: October 2023

Lymphoplasmacyte-rich meningioma (LP meningioma) is a rare form of grade 1 meningioma. It shows dense lymphoplasmacytic infiltrate, mimicking an inflammatory lesion. We present a case of Lymphoplasmacyte-rich (LP) meningioma in the left parasagittal region in a 47-year-old female. On histological examination, it showed dense lymphoplasmacytic infiltrate masking the meningothelial component. There was dense fibrosis and numerous IgG4-positive plasma cells (100-120/hpf), admixed with lymphocytes and few histiocytes. The meningothelial component was highlighted by epithelial membrane antigen (EMA) immunostain. The patient had normal serum IgG4 level. This case highlights the morphological overlap between LP meningioma and IgG4-related disease. The presence of fibrosis and increased IgG4-positive plasma cells as a major inflammatory component in LP meningioma, as demonstrated in the present case and some other previous studies raise suspicion of its association with IgG4-related disease. However, this hypothesis requires further detailed studies for confirmation.
A Novel Neuroimaging Phenotype in the X-Linked Intellectual Disability with a Missense Mutation of CNKSR2 Gene
Authors: Hosur Bharat , Sinha Rahul , Jain Narendra K , Muthanna Boverianda Aiyanna , Bansal Vandana , Singh Sonali , Kamila Gautam
Published: October 2023

Background:

Mental retardation, X-linked, syndromic, Houge type (MRXSHG) is a form of mental retardation characterized by intellectual disability, speech and language impairments, and early-onset seizures. It has been recently recorded in Online Mendelian Inheritance in Man (OMIM), and only 10 cases have been reported in the literature so far.

Objective:

To highlight the novel neuroimaging findings in the pediatric X-linked intellectual disability with a missense mutation of connector enhancer of kinase suppressor of RAS2 (CNKSR2) gene.

Material and Methods:

We present a case of intellectual disability, refractory epilepsy, speech and language delay with subtle dysmorphism, and behavioral issues in an 11-year-old boy with novel neuroimaging findings in a CNKSR2 gene with missense mutation.

Results:

Brain MRI revealed involvement of the basal ganglia, predominantly the neostriatum, and along with the subependymal aspects with focal cavitations involving, especially the bilateral caudate heads. There was relative sparing of the globus pallidi and posterior putamina bilaterally. Whole-exome sequencing identified a hemizygous missense pathogenic variant in the CNKSR2 gene. The mother was found to be an asymptomatic carrier.

Conclusion:

This case report highlights the rare missense mutation in the CNKSR2 gene and abnormal neuroimaging findings, which further provide information about the phenotypic characteristics of X-linked syndromic intellectual disability.
Neurolymphomatosis as an Initial Presentation of Non Hodgkins Lymphoma
Authors: Rohatgi Shalesh , Nirhale Satish , Rao Prajwal , Naphade Pravin , Khan Furqan
Published: October 2023

Neurolymphomatosis (NL) is a rare clinical disease where neoplastic cells invade the cranial nerves, roots, plexus, or other peripheral nerves in patients with hematologic malignancy mainly Non-Hodgkins Lymphoma(NHL). Primary NL occurs as the first manifestation of a hematologic malignancy. We report a 68-year male who presented to us with low backache and burning paraesthesia in the back of both lower limbs followed by a left foot drop. The clinical and electrophysiological examination was suggestive of bilateral lumbosacral radiculopathy involving L2-S1 roots. Plain MRI of the lumbosacral spine was normal. F18FDG PET CT Scan revealed increased uptake in both L5 and left L3 roots. Contrast-enhanced MRI of the lumbosacral spine showed marked fusiform thickening and enhancement of both L5 and left L3 roots CT-guided Biopsy from left L5 root, lymph node, and bone marrow was suggestive of large B cell lymphoma-germinal center cell type. The diagnosis was neurolymphomatosis secondary to NHL.
Effects of laser irradiation and tooth mousse on tooth hypersensitivity after office bleaching: A non-randomized clinical trial
Authors: Sadri Mohammadmahdi , Nakhostin Afrooz , Salamat Fahimeh
Published: October 2023

Background:

This study aimed to assess the effect of laser irradiation and Tooth Mousse on tooth hypersensitivity (TH) after office bleaching (OB).

Materials and Methods:

This clinical trial, parallel-design split-mouth nonrandomized was conducted on 30 patients requiring OB. After scaling and fabrication of a custom tray, 35% hydrogen peroxide was applied on all teeth, and 940 nm diode laser (10 W, Class IV, 110–240 V) was irradiated to the upper and lower right quadrants. Laser in off mode was used for the left quadrants. Bleaching agent was then reapplied. After completion of bleaching, a custom tray containing tooth Mousse was placed on the maxillary arch while the tray was used without the paste for the mandibular arch. A visual analog scale was used to assess the degree of TH at 15 min and 24 h after OB. Data were compared using t-test, paired t-test, and analysis of variance. Significance level was set at α = 0.05.

Results:

Comparison of TH at 15 min and 24 h after OB showed a significantly lower TH score in the left upper quadrant (tooth Mousse alone) than right upper quadrant (both laser and Tooth Mousse) (P < 0.05). The TH score in the right upper quadrant was significantly lower than that in the right lower quadrant (laser only) (P < 0.05). The mean TH score in the left upper quadrant was insignificantly lower than that in the left lower quadrant (no intervention) (P > 0.05).

Conclusion:

The use of 940 nm diode laser for OB increases the postoperative TH. The application of Tooth Mousse can effectively decrease TH after OB with/without laser irradiation.
Attitude of dental students toward evidence-based dentistry in Iran: A systematic review
Authors: Asgari Imaneh , Farahmand Hanieh , Ahmady Ali , Zahed Maryam
Published: October 2023

Background:

Dentistry practice has become more complex and challenging in the recent years. The clinical decision-making process has experienced many problems due to changing socioeconomic patterns, knowledgeable patients, rapid technological advances, and information explosion. The present study reviewed the status of the attitude toward evidence-based dentistry (EBD) among dental students of Iran Universities. The effect of the educational intervention was also assessed.

Materials and Methods:

This systematic review was conducted according to the Preferred Reporting Items for Systematic review and Meta-Analysis checklist. Search strategy was developed by Medical Subject Headings terms and keywords surfing electronic available databases including Medline/PubMed and Google Scholar and local databases such as Scientific Information Database (SID) and Magiran. Two reviewers read the abstracts of all eligible papers and excluded the duplicates. They extracted the information of the full-text of the studies included in the review and assessed the quality by Joanna Briggs Institute critical appraisal checklist.

Results:

Ten studies including 8 cross-sectional and 2 interventional studies met the criteria. The assessment of the attitude of 937 dental students from a different region of the country toward EBD showed moderate to acceptable status using 3 different tools. In regard to educational interventions, 2 studies were successful to improve their attitude.

Conclusion:

Although the researchers presented good scores on the attitude questionnaires, the quality of the study tools, the eligible criteria for recruiting the participants and the method of evaluating the construct of attitude should be investigated in future studies.
Methanolic pomegranate dried peel extract improves cryopreserved semen quality and antioxidant capacity of rams
Authors: Aboelmaaty Amal M. , Kotp Mohamed S. , Fadl Aya M. , Abdelnaby Elshymaa A. , El-Seadawy Islam E. , El-Sherbiny Hossam R.
Published: October 2023

Objective:

To select the appropriate concentrations of methanolic pomegranate extract supplemented in rams' semen extender for obtaining the best-cryopreserved semen quality.

Methods:

Tris-based semen extender was supplemented with 0.0, 0.40, 0.48, and 0.56 mg/mL pomegranate peel methanolic extract to extend semen collected from five native rams twice weekly for two months (n=80). Pooled (n=16) post-thaw semen characteristics were determined. Thawed seminal plasma of all supplemented and control groups were used to measure malondialdehyde (MDA), nitric oxide (NO), glutathione peroxidase (GPx), superoxide dismutase (SOD), ascorbic acid, zinc, copper, total cholesterol, low-density lipoproteins (LDL), lactate dehydrogenase (LDH), and alkaline phosphatase (ALP).

Results:

The supplementation of Tris-based semen extender with 0.48 mg/mL semen extender resulted in the highest post-thaw sperm total motility (P<0.001), sperm progressive motility (P<0.001), live sperm (P<0.001), sperm plasma membrane integrity (P<0.001), acrosome integrity (P<0.001), SOD (P<0.05), zinc (P<0.001), total cholesterol (P<0.001), and LDL (P<0.001) with the lowest percentage of abnormal sperm morphology (P<0.001), the lowest lipid peroxidation (MDA, P<0.01), ascorbic acid (P>0.05), and LDH (P>0.05).

Conclusions:

Pomegranate peel methanolic extract 0.48 mg/mL supplemented to Tris-based semen extender of rams is the best enrichment in preserving the sperm post-thaw characteristics via improving biochemical profiles and antioxidant capacity.
The diagnostic accuracy of perfusion-only scan in the diagnosis of pulmonary embolism in the era of COVID-19: A single-center study of 434 patients
Authors: Cengiz Turgut Bora , Abdelrahman Ahmed , Rohren Scott A. , Doucette John , Ghesani Munir
Published: October 2023

INTRODUCTION:

There is a paucity of data in the literature regarding the diagnostic accuracy of perfusion (Q)-only studies in the absence of ventilation images. This study aims to assess the diagnostic accuracy of Q-only imaging in the pandemic era.

METHODS:

Patients who underwent Q-only imaging for pulmonary embolism between March 2020 and February 2021 were analyzed. Patients who underwent lung quantification analysis were excluded. Q-only test results were reported as per modified PIOPED II criteria and single positron emission tomography/computed tomography (SPECT/CT) imaging was performed as needed. Patients were considered concordant or discordant by correlating the Q-only results with CT angiogram (CTA) or clinical diagnosis made through chart review. The diagnostic accuracy was calculated after excluding intermediate probability and nondiagnostic studies.

RESULTS:

Four hundred and thirty-four patients were identified. One hundred and twenty-eight patients (29.4%) underwent ultrasound Doppler, 37 patients (8.5%) underwent CTA, and 16 patients (3.6%) underwent both. After excluding patients with intermediate probability or nondiagnostic studies and who did not have follow-up (a total of 87 patients [20%]), 347 patients were enrolled in the final analysis. The combined planar and SPECT/CT sensitivity and specificity were 85.4% (72.2%–93.9% confidence interval [CI]) and 98.7% (96.9%–98.6% CI), respectively. The positive predictive value (PPV) of the Q-only imaging was 89.1% (77.3%–95.1% CI) and the negative predictive value (NPV) was 98.2% (96.4%–99% CI). The sensitivity with SPECT/CT reached 100% (CI: 71.5%–100%) with a specificity of 92.3% (CI: 64%–99.8%). The PPV was 85.7% (CI: 62.1%–95.6%) and the NPV was 100%.

CONCLUSION:

Q-only imaging provides clinically acceptable results. The sensitivity of the Q-only scan is increased when coupled with SPECT/CT.
Association of CYP11A1 Polymorphisms with Recurrent Pregnancy Loss in the Female Population of Punjab
Authors: Rayat Amanjot Kaur , Thapar Pallvi , Kaur Mandeep , Singh Sukhjashanpreet , Kaur Anupam
Published: October 2023

Background:

Recurrent pregnancy loss (RPL) is defined as the failure of two or more clinically recognised pregnancies before 20 weeks of gestation. The prevalence of clinically evident RPL is 1%–2% worldwide. The aetiologies of RPL include uterine anatomic anomalies, uncontrolled diabetes mellitus, untreated hypothyroidism, parental chromosomal abnormalities, antiphospholipid antibody syndrome, thrombophilia, genetic abnormalities and infections.

Aims:

This study was aimed at investigating the possible association between CYP11A1 (rs11632698) and (rs4077582) polymorphisms with RPL in the female population of Punjab.

Settings and Design:

The case– control study was conducted on 170 subjects, of which 80 RPL cases and 90 controls were analysed.

Materials and Methods:

Genotypic analysis was performed using the polymerase chain reaction – restriction fragment length polymorphism. Statistical Analysis Used: Pearson’s Chi-square test was used.

Results:

The genotypic frequency of CYP11A1 (rs11632698) A > G polymorphism was statistically significantly different amongst cases and controls (P = 0.00001). It was observed that the presence of the G allele might increase the risk of RPL. A Chisquare analysis of CYP11A1 (rs4077582) (P = 0.01) indicated a significant difference amongst the genotypes of cases and controls of RPL.

Conclusion:

CYP11A1 variants (rs11632698 and rs4077582) may be useful markers in determining the genetic susceptibility to the pathogenesis of RPL. Keywords: CYP11A1, recurrent miscarriage, recurrent pregnancy loss, rs11632698, rs4077582, spontaneous abortion.
Association between Late Manifestations of Testicular Dysgenesis Syndrome and Anogenital Distance: A Systematic Review and Meta-analysis
Authors: Tsutida Carolina Arissa , Veiga Ana Carolina Bernard , Martino-Andrade Anderson Joel , Andrade Diancarlos Pereira de , Mello Rosiane Guetter , Müller Juliane Centeno
Published: October 2023

Background:

In 2001, Skakkebæk et al. proposed that certain male reproductive disorders might be grouped into a syndrome called testicular dysgenesis syndrome (TDS), as they all appear to be associated with disruption of the embryonic and foetal programming of gonadal development. TDS may be manifested in early life by the presence of genital malformations (hypospadias and cryptorchidism) and in adult life as disorders represented by low sperm counts and testicular cancer. Changes in androgen hormones during the foetal development, in addition to resulting in TDS, can also cause permanent changes in anopenile anogenital distance (AGDap) and anoscrotal anogenital distance (AGDas).

Aims:

The objective of this study was to determine whether there is a relationship between late manifestations of TDS and reduced anogenital/anoscrotal distance.

Materials and Methods:

The present study is a systematic review and meta-analysis. The research included papers from 2001 to 2020, comprising a total of 737 articles, and 13 articles were selected.

Results:

Linear regression analysis was performed to evaluate the relationship between the two anogenital distance measures, which showed a significant positive association (P = 0.039). A meta-analysis was also performed and compared AGDap and AGDas between control and case groups, with cases defined as men with any late TDS manifestation. These data showed a significant reduction in AGDas in the affected population (P = 0.04), but no differences in the AGDap measure (P = 0.59).

Conclusion:

Our study confirmed a significant relationship between reduced AGDas and late manifestations of TDS, providing further support to the association between prenatal androgen deficiency and late-onset reproductive disorders.
ASSESSMENT OF COGNITIVE FUNCTIONS AMONG SUBJECTS WITH SUBCLINICAL HYPOTHYROIDISM
Authors: Nabi Tauseef , Rafiq Nadeema
Published: October 2023

Objective:

The consequences of overt hypothyroidism on CNS are well known. In contrast, there is less evidence regarding the effects of subclinical hypothyroidism (SCH) on cognitive functions. Studies have shown a variable association between SCH and cognitive dysfunction. This study was done to assess the prevalence of cognitive impairment among subjects with SCH.

Methods:

The participants were 100 subjects (aged 40-60 years) with SCH and similar number of age-matched euthyroid controls. Subclinical hypothyroidism was defined as serum TSH level > 4.5 mIU/L with normal FT3 and FT4. Participants were interviewed by a single observer. Cognitive function was assessed by mini mental state examination (MMSE) and clock drawing test (CDT). MMSE scores ≤24 is indicative of cognitive impairment. For CDT a score of ≥3 represents a cognitive deficit, while a score of 1 or 2 was considered normal.

Results:

The mean age of patient group was 47.4 years, and BMI of 26.1kg/m2 which were comparable to controls who had a mean age of 46.1 years (P=0.16) and mean BMI of 25.9 kg/m2 (P=0.25). All other baseline variables including sex ratio, co-morbidities, family history of dementia, smoking, alcohol use, education and exercise were also comparable in both groups. The mean TSH was 7.8 mIU/L in patients and 2.7 mIU/L in controls (P< 0.05).The mean MMSE score was 26.1 in patient group and 27.7 in controls (P=0.31) The patients had mean CDT of 2.32 and controls 2.44 (P=0.61). Cognitive impairment by MMSE (score ≤24) was found in 22.0% of patients and in 16.0% of controls (P=0.14), also the cognitive impairment by CDT (score of ≥3) was present in 27.0% of patients and 25.0% of controls (P=0.29).

Conclusion:

In the present study we have found that the prevalence of cognitive impairment in subjects with SCH is similar to the age matched controls. Therefore the potential benefit of levothyroxine therapy if used with an aim of improving cognitive functions becomes doubtful.
Variations of $v$-change of time in an optimal control problem with state and mixed constraints
Authors: Dmitruk Andrei Venediktovich
Published: October 2023

For a general optimal control problem with state and regular mixed constraints we propose a proof of the maximum principle based on the so-called $v$-change of time variable $t \mapsto \tau$, under which the original time becomes an additional state variable subject to the equation $dt/d\tau = v(\tau)$, while the additional control variable $v(\tau)\geqslant 0$ is piecewise constant, and its values become arguments of the new problem.
Continuous selections of set-valued mappings and approximation in asymmetric and semilinear spaces
Authors: Tsar'kov Igor' Germanovich
Published: October 2023

The Michael selection theorem is extended to the case of set-valued mappings with not necessarily convex values.
Classical approximation problems on cone-spaces with symmetric and asymmetric seminorms are considered.
In particular, conditions for existence of continuous selections
for convex subsets of asymmetric spaces are studied.
The problem of existence of a Chebyshev centre for a bounded set
is solved in a semilinear space consisting of bounded convex sets with Hausdorff semimetric.
On stabilization of solutions of second-order semilinear parabolic equations on closed manifolds
Authors: Tunitsky Dmitry Vasilievich
Published: October 2023

The paper is concerned with problems of existence, uniqueness, and stabilization of weak solutions
of one class of semilinear second-order parabolic differential equations on closed manifolds.
These equations are inhomogeneous analogues of the
Kolmogorov-Petrovskii-Piskunov-Fisher equation,
and have significant applied and mathematical value.
Impure Simplicial Complexes: Complete Axiomatization
Authors: Randrianomentsoa Rojo , van Ditmarsch Hans , Kuznets Roman
Published: October 2023

Combinatorial topology is used in distributed computing to model concurrency
and asynchrony. The basic structure in combinatorial topology is the simplicial
complex, a collection of subsets called simplices of a set of vertices, closed
under containment. Pure simplicial complexes describe message passing in
asynchronous systems where all processes (agents) are alive, whereas impure
simplicial complexes describe message passing in synchronous systems where
processes may be dead (have crashed). Properties of impure simplicial complexes
can be described in a three-valued multi-agent epistemic logic where the third
value represents formulae that are undefined, e.g., the knowledge and local
propositions of dead agents. In this work we present an axiomatization for the
logic of the class of impure complexes and show soundness and completeness. The
completeness proof involves the novel construction of the canonical simplicial
model and requires a careful manipulation of undefined formulae.
Trait- and State-Components of Mathematics Anxiety versus Perceived Mathematics Anxiety
Authors: Fortune Annamarie , Spangenberg Erica Dorethea
Published: October 2023

Negative emotions such as mathematics anxiety (MA) may lead to the avoidance of mathematics, which can have dire consequences for future career-related decisions. This paper compared Grade 10 learners’ levels of trait-MA with perceived MA according to the type of school and gender. Both quantitative and qualitative data through a survey conducted with 427 Grade 10 mathematics learners from seven schools were collected. Quantitative data were descriptively analysed, while qualitative data were inductively coded and categorised. Participants from an independent school reported higher levels of trait-MA than those from the other types of schools. Female participants experienced higher levels of trait-MA than their male counterparts. More participants reported perceived MA as opposed to those who measured high levels of trait-MA. MA was viewed as a negative emotional response to activities and situations related to mathematics with a wide range of causes and consequences. This study provides valuable insight for the development of an instrument to measure perceived MA.
Emotional Regulation as a Predictor of Psychological Identity Styles among Adolescents
Authors: Shtiwi Wijdan Fakhry
Published: October 2023

The study aimed to identify the level of emotional regulation and psychological identity styles among adolescents. It also identified emotional regulation as a predictor of psychological identity styles in adolescents. To achieve the aim of the study, the descriptive correlational approach was used. The study sample consisted of 645 male and female students, randomly selected from adolescent students in secondary and preparatory schools in Nazareth District inside The Green Line in the first semester of the academic year 2022/2023. The results showed that the level of the dimensions of emotional regulation (cognitive reappraisal and suppression) among adolescents in Nazareth District inside The Green Line was moderate from the point of view of the study sample. The informational identity style came in the first rank with (45.4%) of the study sample, and their scores for this style were higher than their scores for the other two styles. Then, the normative identity style was followed by (30.1%) of the study sample. The diffuse/avoidant identity style came in third and last place with (24.5%) of the study sample. The results also showed a statistically significant predictive ability between the informational, normative, and diffuse/avoidant psychological identity styles with emotional regulation dimensions (cognitive reappraisal and suppression). The study recommended that students be encouraged to adopt the informational identity style, especially since the study results revealed a positive relationship between this style and emotional regulation. It also recommended training students with a diffuse/avoidant identity style on emotional regulation, especially since the study results revealed a negative relationship between emotional regulation and the diffuse/avoidant identity style.
The Existence of Teacher Leadership and School Climate Impact on Teacher Performance
Authors: Simaremare Aman , Rahman Arif , Meftah Muhammad , Baharuddin Baharuddin , Ampera Dina
Published: October 2023

This research aims to determine the influence of teacher leadership and school climate on the performance of high school (SMP) teachers. This type of research uses a quantitative approach through path analysis. The sample consisted of 80 Medan 35 State Junior High School (SMP) teachers. Data collection was carried out using a questionnaire. The research results show: (1) Teacher leadership directly affects the learning climate in schools; the better the teacher leads the class, the better the learning climate created in the school environment. (2) Teacher leadership directly affects teacher performance; the better the teacher's leadership, the more the teacher's performance will also increase. (3) School climate has a direct positive effect on teacher performance, meaning that the better the school climate, the higher the teacher performance. (4) Teacher leadership indirectly affects teacher performance through the school climate because the teacher leads the class better and can work well together, internally and externally. A good school climate will be created. The school atmosphere will feel comfortable and peaceful when the members can work together, which ultimately results in a good performance for the teacher.
The Impact of Applying Scientific Learning with Conventional Learning on Creativity and Physical Education Learning Outcomes of High School Students
Authors: Mesnan Mesnan , Manalu Nimrot , Supriadi Amir
Published: October 2023

This research aims to see the influence of scientific and conventional learning on the creativity and learning outcomes of physical education students in high school. This experimental research uses test instrument techniques for learning outcomes and questionnaires for creativity, with a 2x2 factorial ANOVA research design. The number of samples was 50 people for the scientific learning group and 40 for the conventional learning group, and the sampling technique used cluster random sampling. Before carrying out an analysis of variance (ANOVA), first carry out the analysis requirements, namely the normality test and homogeneity test. Next, the two-way ANOVA test was used at a significance level of α of 0.05 and continued with the Scheffe test at a significance level of α = 0.05. The research results show that 1). There are differences in the influence of conventional and scientific learning on creativity; 2). There are differences in the effect of conventional learning and scientific learning on physical education learning outcomes; 3). There are differences in the influence of conventional and scientific learning on creativity and physical education learning outcomes; 4). There is an interaction between the influence of conventional learning and scientific learning on creativity and physical education learning outcomes.
Extraction of Actual Faults with Adjusting the Pixel Width Parameter to Remove Undesired Noise Pixels in the Image (RPW)
Authors: Yasak Mahmut Sami , Keskin Gizem
Published: October 2023

Image Denoising, Deblurring, and Enhancement techniques are most commonly used on the images to reduce or completely remove the noise. The noisy images are not capable of perfectly using the solution of the desired problems such as object edge detection, object segmentation, and object classification. Because the edges of these objects have much bluer or more noise pixels for clearly stable detection. The main motivation of this study is to solve the problem of detection and elimination of the undesired noisy pixels on the encountered images. These noisy pixels are needed to be removed from the obtained images which are the results of throughout determined image processing steps. The main reason for this study motivation come out that to find the actual inscription fault has some noisy (undesired) pixels when extracting the true difference between the two images has been subtracted from each other. The subtracted image results are used in the inscription inspection process that controls the accuracy of the inscription quality. In the inscription inspection process, subtracted image results are used to determine the accuracy of the inscription quality. These subtracted images are formed by subtraction from each other of reference images and sample images. In these subtracted images if truly exist inscriptions faults or sometimes that could be occurred undesired noisy pixels at the same time in the subtraction process. This study focused on detecting and eliminating the undesired noisy pixels in order to reach actual inscription faults in the images. Thus, the remove pixels as width algorithm (RPW) has been developed and applied to these specified images.
Liquid-Volume Measurement Estimation Skills of Gifted Students and Suggestions for Saving Water
Authors: Er Zubeyde
Published: October 2023

Water is vital for the survival of living things. It is water that sustains all living organisms, all biological life, and all human activity. Water constitutes 3/4 of the world, 60% of the human body. The need for water is increasing day by day due to the rapid increase in the population and the fact that the water resources remain constant. It is important for individuals to be conscious about water consumption, to be aware of how much they consume.   In this context, in this research, students’ estimates of the amount of water they consume, liquid-volume measurement estimates and their views on water conservation were examined. This study aims to examine the liquid-volume measurement estimation skills of gifted students and to examine their views on water conservation. This study was conducted as per the case study design, which is one of the qualitative research designs. The study group of the study consisted of 24 gifted students studying in the 6th grade in a Science and Art Center in a province located in the southern region of Turkey in the 2022-2023 academic year. As a result of the research, it was observed that the students had moderate liquid-volume estimation skills and the male students had more liquid-volume estimation skills than the female students. In addition, it was concluded that students had a low average score in liquid-volume estimation problems involving real-life situations, and that the most opinions about water conservation were in the theme of limitation and penalty application.
Pengembangan Lembar Kerja Siswa (LKS) Berdasarkan Identifikasi Jenis-Jenis Gastropoda di Kawasan Hutan Mangrove
Authors: Robo Sumitro , Muna Lintal , Juniartin Juniartin , Amin Astuti Muh
Published: October 2023

The importance of developing student worksheets (LKS) based on the results of the identification of gastropods in Indari Village is very useful for students to know the importance of the role of gastropods in our environment, therefore the student worksheets can be used to present contextual material, namely developing students' prior knowledge, and also invites students to think critically through practicum in the teaching and learning process takes place. In order for this subject to be well received by students, it is necessary to have a student worksheet (LKS) which aims to accommodate and encourage students' thinking skills and support students to be able to think for themselves, analyze themselves, and arrange the final results of student activities according to developments. student psychology. The type of research used in this research is research and development which consists of Define, Design, Develop, and Disseminate. Based on the results of research conducted in the mangrove forest area of Indari Village, it can be found as many as 15 types of gastropods with different characteristics and shapes. The total number of gastropods found was 547 individuals. The most common species found was Nerita sp with 82 individuals while the least species found was Chicereus capueinus with 7 individuals. The development of LKS teaching materials using the 4-D model is feasible based on the results of the validation carried out by material expert validators and design experts.
Inventarisasi Tumbuhan Asing Invasif di Kawasan Taman Hutan Raya Ir. H. Djuanda
Authors: Supriyatna Ateng Supriyatna , Aulia Annisa Ridha , Cahyanto Tri
Published: October 2023

Invasive alien plant species are plant species that occupy and dominate an area so that they become one of the threats to damage ecosystems, habitats, flora and fauna. The purpose of the study was to determine the types of invasive alien plants found in the Ir. H. Djuanda Forest Park and to find out the potential use of invasive alien plant species for the community. The research design used exploratory method combined with line transect. The results showed that there were 50 species belonging to 27 families, especially in the Compositae (13 species), Poaceae (5 species), and Acanthaceae (4 species). Based on the species composition in each block, the species found in the Utilization Block (29 species) were more diverse than the Protection Block (27 species) and Collection Block (10 species). Based on the literature review, the invasive alien plant species found in the Ir. H. Djuanda Forest Park has the potential to be developed as a animal feed, medicinal plant, processed food, and ornamental plant.  Keywords: Species composition, Potential, Invasive alien plants species
Peningkatan Hasil Belajar Siswa dalam Pembelajaran IPA pada Materi Siklus Hidup Hewan Menggunakan Game Edukasi Media Puzzle
Authors: Nurasia Nurasia , Indah Opik Dwi , Ismayanti Ismayanti , Misbah A.M. Nur Musaysar
Published: October 2023

The aim of this research is to improve the learning outcomes of fourth grade students through educational games with puzzle media in science subjects at SDN 2 Pinceppute. The type of research used is Classroom Action Research (PTK) which was carried out for 2 cycles. The subjects studied were 16 grade IV students at SDN 2 Pinceppute, consisting of 9 male students and 7 female students. Data collection was carried out using a student learning achievement test instrument. Data analysis used is descriptive data analysis. The results of the study show that educational games through puzzle media can improve the learning outcomes of fourth grade students at SDN 2 Pinceppute, Palopo City. This can be seen from the indicators of research success, where ≥ 75% of students have achieved the KKM score (70). In cycle I, the number of students who had completed were 8 students (50%) and those who had not completed were 8 students (50%). Cycle II increased to 13 students (81.25%) and 3 students (18.75%) did not complete. It can be concluded that student learning outcomes have increased by 31.25%. Keywords: student learning outcomes, educational games, media puzzle,               science learning .
Makine Öğrenmesi ve Optimizasyon Yöntemleri ile Uzun Dönem Elektrik Enerjisi Tahmini: Türkiye Örneği
Authors: KARAMAN Ömer Ali , BEKTAŞ Yasin
Published: October 2023

Sanayileşmenin hızla artması enerji ihtiyacını günümüzde artmıştır. Bununla birlikte ortaya çıkan bu enerji ihtiyacını karşılayabilmek için ön görülebilecek enerji tahminlerini yapabilmek için optimizasyon ve makine öğrenme algoritmaları ön plana çıkmıştır. Parçacık sürü optimizasyonu (PSO), Lineer Regresyon (LR) ve Gauss Süreç Regresyonu (GSR) bu algoritmalar içerisinde yer almaktadır. Bu çalışmada PSO, LR ve GSR algoritmaları kullanılarak Türkiye’nin 2020-2040 yılları arasındaki enerji talep tahmini yapılmıştır. Bu tahmin işlemlerinin yapılabilmesi için 1980-2019 yılları arasında geçmiş nüfus, ihracat, ithalat, gayri safi yurtiçi hâsıla (GSYH) giriş verileri olarak kullanılırken enerji tüketimi çıkış verisi olarak kullanılmıştır. PSO, LR ve GSR yöntemlerinin performans sonuçlarını değerlendirebilmek için regresyon kare (R2) değeri, kök ortalama kare hatası (RMSE), ortalama kare hatası (MSE) ve ortalama mutlak hata (MAE) hata metrikleri kullanıldı. R2, RMSE, MSE ve MAE değerleri göz önünde bulundurulduğunda bütün yöntemlerin başarılı sonuçlar verdiği gözlemlenmiştir.
Social Support and Postpartum Depression among Hospitalized Women at a Public Hospital in Bangladesh
Authors: Yeasmin Sahida , Akter Khaleda , Islam Md. Shariful , Khatun Fahima
Published: October 2023

Objectives: The study aimed to examine the relationship between social support and postpartum depression among hospitalized women at a public hospital in Bangladesh. Methods: A descriptive correlational study was conducted among 110 hospitalized postpartum women at a public hospital in Bangladesh using a convenience sampling technique. Data was collected through face-to-face interviews by using the Personal Resources Questionnaire to evaluate social support and the Edinburgh Postnatal Depression Scale to assess postpartum depression. The data was analyzed using descriptive and inferential statistics. The study was conducted from June 2021 to June 2022. Results: The study result revealed that the majority (65.5%) of postpartum women experienced depression. Participants' age, number of gravida, mode of delivery, and place of living were significantly associated with postpartum depression. The number of gravida and educational level were also found to be significantly associated with perceived social support. A highly significant negative correlation was found between social support and postpartum depression. Conclusion: The findings will be useful by describing factors of postpartum depression, early detection of postpartum depression and educating the public about the importance of social support during the postpartum period. The study also hopes to reduce maternal stress, unfavourable mother-child health outcomes, hospitalization and treatment cost for postpartum depression.
ENGLISH MORPHOLOGY - A COURSEBOOK
Authors: Ž. Jovanović Vladimir
Published: October 2023

This coursebook is primarily intended for the students of English as a foreign language at various philological departments, but first of all for the students of English at English departments. Naturally, it may serve to other readers outside the afore-mentioned framework as a useful handbook conducive to acquiring knowledge of the basic features of the English language, the leading language in international communication. The purpose of the book is to present an introductory reading to the subject of morphology and a self-study resource manual for students who would like to master English word structure and lexeme formation. As the title suggests, this book is meant to be a textbook for a basic course in the Inflectional morphology of English, focusing on the formal aspect of the language, i.e. the grammatical or inflectional side, and the Lexical morphology of the English language, presenting the processes and principles of derivation of lexemes, with an emphasis on derivational affixation. The two main domains of study within morphology are somehow reflected in the two sections of the text. The book is composed of 15 chapters of roughly the same volume, each of which may be adequate as a part of the material for a fifteenweek primary course in English Morphology. Each chapter is concluded with a set of questions and exercises for practice work, as well as with directions for further inquiry into relevant literature for more ambitious readers. Being a coursebook for students of philology, it aims at achieving a double effect. On the one hand, its goal is establishing a recognizable feature of clearcut defining of the elementary notions in the field of morphology and on the other, presenting the fundamental characteristics of the English language at the level of word structure. Along with that, students will hopefully find this textbook a valuable source of information when it comes to the formative potential of the language and a useful reference work which includes a fairly thorough treatment of English derivational affixes and combining elements. Moreover, this book is devised in such a manner as to provide the student with the necessary theoretical and analytical apparatus for approaching the greatest majority, if not all, of the lexical items in English.
SKILLS TO COPE WITH LEARNING STRESS OF STUDENTS IN CAN THO UNIVERSITY, VIETNAM
Authors: Phuong Nguyen Thi Bich , Tai Nguyen Huu , Phuong Vo Ngoc , Y Huynh Nhu
Published: October 2023

The research on the topic has systematized the theoretical basis of students' skills to cope with stress in learning. Currently, students face a lot of pressure and stress in their studies, so coping skills are an extremely important issue and need attention. The study presents the manifestations of skills to cope with stress in the learning of students of School of Education at Can Tho University (CTU), Vietnam. The research mainly uses a questionnaire survey method with 400 students from various fields of study, SoE, CTU. According to survey results, there were many manifestations of stress that students encountered. The survey results are the basis for finding the causes so students can plan and manage their time, set specific goals to find effective remedies, adapt and manage better emotions. From the current situation of the problem, the study has proposed measures to support students' skills to cope with stress in their studies. This study provides recommendations to deploy and apply the research results to Can Tho University lecturers and students as well.
 

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THE IMPACT OF OIL SPILLS ON THE ECONOMY AND THE ENVIRONMENT
Authors: El Moussaoui Nada , Idelhakkar Brahim
Published: October 2023

This paper critically assesses the multifaceted consequences of oil spills, particularly emphasizing their ramifications on the environment and the economy. With globalization intensifying reliance on maritime transport—accounting for nearly 90% of global trade—the potential for oil spills and their subsequent repercussions have become an alarming concern. Such spills can inflict enduring damage on marine ecosystems and lead to substantial economic setbacks in industries like fishing, tourism, and maritime operations. The enormity of the challenge extends beyond immediate environmental and economic impacts; it necessitates an interdisciplinary comprehension spanning environmental science, economics, legislation, and technology. Furthermore, oil spills underscore the need for international collaboration, as their consequences can breach national boundaries. This systematic literature review methodically analyzes existing research on the topic, employing databases like PubMed, Scopus, ScienceDirect, and Google Scholar. Through a rigorous filtering process, the review synthesizes empirical studies, theoretical analyses, government reports, and field assessments. The endeavor is to delineate prevailing themes, methodologies, conclusions, and lacunae in the extant literature, aiming to bridge the gap between economic growth imperatives and environmental sustainability challenges.

 

JEL: Q53, Q57, L91, Q35, F18, Q58, O13, Q22

 

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