bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis pemanfaatan Youtube sebagai Media Pembelajaran dalam Tema 7 Subtema 1 Kelas IV SDN Jatingaleh 02 Semarang
Authors: Komariyah Komariyah , Listyarini Ikha , Saputra Henry Januar
Published: September 2022

The aim of this study is to analyze the use of youtube as a learning medium at SDN Jatingaleh 02 Semarang for 4th class. Which is descriptive for the teachers. The type of this research is descriptive qualitative with data collection techniques through interviews, observation, student questionnaires, and documentation. The research subjects are teachers and students at 4th class. The results are: 1) planning and choosing videos before teaching, 2) implementation by displaying and sharing by WA’s group. This learning process requires the teachers designing activities and providing interesting objectives. The conclusion of youtube as a learning medium can give positive impact for students, by stimulating, can to make the students comfortable, can increase students motivation, focusing, insight, and knowledge.
Persepsi Guru Terhadap Pembelajaran Daring pada Masa Pandemi Covid-19 di Sekolah Dasar Negeri 1 Tajemsari
Authors: Ditananda Kurnia Gusti , Azizah Mira , Rahmawati Intan
Published: September 2022

This study aims to analyze teacher perceptions of online learning and the implementation of online learning in SD Negeri 1 Tajemsari. This study uses a qualitative approach. The research data sources consist of informants and documents collected through in-depth interviews, documentation and observation techniques. The data validity technique used is source triangulation. The results showed that teacher perceptions were formed through the teacher's process of seeking information about online learning, adapting to online learning, and evaluating the implementation of online learning. The teacher's perception of online learning is influenced by the teacher's experience. This also affects the way teachers implement online learning in elementary schools. The implementation of online learning consists of planning, implementation, and assessment. Teachers have not been able to carry out learning according to process standards. The learning methods used vary according to the teacher's perspective on online learning.
Upaya Meningkatkan Keterampilan Berpikir Kritis Siswa Melalui Penerapan Model Pembelajaran Cooperative Script di Sekolah Dasar
Authors: Syamsyiah Nur
Published: September 2022

Critical thinking skill is one of 21st century vital skills that should be mastered by students to face global challenges. Unfortunately, critical thinking skills possessed by many students are still not well developed. This study aims to determine the implementation of the Cooperative Script learning model to improve critical thinking skills of grade VI students at SDN Panglegur 2 Pamekasan. The research used in this study was Classroom Action Research (CAR) which consists of 2 cycles. Each cycle consists of planning, implementing, observing, and reflecting activities. The results of this study showed that there was an increase in the average score of students' critical thinking skills. The average score on the initial test was 60.65 or it was included in the category of sufficient critical thinking; the average score in the 1st cycle was 67.91 or it was still in the sufficient category; and in the 2nd cycle rose to 74.52 or in the good category. At the end of the 2nd cycle, as many as 17.39% of students reached the category of very good critical thinking skills. Thus, it can be concluded that the implementation of the Cooperative Script learning model can improve students' critical thinking skills.
Kemampuan Analisis Artikel Ilmiah Mahasiswa PGMI IAIN Sorong
Authors: Agnesa Oki Sandra , Anggrella Dita Purwinda
Published: September 2022

The ability to analyze scientific articles is important for students to have to complete their studies. This study aimed to describe the ability to analyze scientific articles of fifth-semester students of PGMI IAIN Sorong, which was measured based on the ability to recognize the rhetorical move of articles. The research design was in the form of a survey with a sample of 28 students. The study results, which were analyzed using the percentage technique, showed that the analytical ability of the fifth-semester students of PGMI IAIN Sorong was still low in identifying the rhetorical movement of articles. The objective aspect (85.71% correct answer) and conclusion (75% correct answer) are the easiest aspects to identify, followed by the implication aspect (53.57% correct answer), while the motive, support, counterargument, and refutation aspects (0% correct answer)  could not be identified.
Hubungan antara Metode Pembelajaran Diskusi dan Keaktifan Belajar Siswa Mata Pelajaran IPS
Authors: Tumbel Noldin Jerry , Supit Deisye , Suoth Citra Anjeli
Published: September 2022

The purpose of this study was to determine the relationship between discussion learning methods and student learning activities in social studies subjects. The researcher adapted the questionnaire from Khasanah (2021) and Diendrich (1992) and then distributed it to 125 students of class VIII A, B, C, and D at Adventist Junior High School Airmadidi Unklab to find out whether the discussion learning method was often used for student learning activities in social studies subjects. This research is a quantitative research that is descriptive and correlative, used to answer the formulation of the problem. The purpose of this study was to determine the relationship between discussion learning methods and student learning activities in social studies subjects. The researcher adapted the questionnaire from Khasanah (2021) and Diendrich (1992) and then distributed it to 125 students of class VIII A, B, C, and D at Adventist Junior High School Airmadidi Unklab to find out whether the discussion learning method was often used for student learning activities in social studies subjects. This research is a quantitative research that is descriptive and correlative, used to answer the formulation of the problem.
Effects of exogenous oxytocin administration on non-social executive function in humans: A preregistered systematic review and meta-analysis protocol
Authors: Kang Heemin , Glaser Bernt , Sartorius Alina M. , Audunsdottir Kristin , Nærland Terje , Andreassen Ole A. , Westlye Lars T. , Quintana Daniel S
Published: September 2022

Oxytocin has received considerable research attention for its role in social cognition and behavior. However, there is emerging evidence that oxytocin may operate in a more domain-general way by also moderating non-social cognition in both animals and humans. This protocol describes a planned systematic review and meta-analysis that will investigate if oxytocin facilitates executive function outside social contexts and which factors may moderate this effect.
Zuhud Dalam Tasawuf KH. Sholeh Darat
Authors: Nisa' Elvina Khoirun
Published: September 2022

Kehidupan manusia merupakan suatu nikmat besar dari Allah swt, Allah yang menciptakan kehidupan didunia ini dengan sebaik-baik mungkin, dan menjadikan dan menciptakan dengan sebail mungkin. Alam hewan, dan manusia merupakan beberapa contoh yang ada di dalam dunia ini. Namun dari sekian banyaknya makhluk yang di ciptakan Allah swt menjadikan manusia sebagai makhluk yang paling terbaik diantara lainnya. Allah memberikan kelebihan manusia berupa akal, dan hawa nafsu, yang membedakan manusia dari makhluk yang lainnya. Namun, seiring dengan berjalannya waktu dan berkembangnya zaman, banyak manusia yang terlena akan kenikmatan dunia semata sehingga melupakan tujuan Allah swt menciptakan manusia, Maka tulisan ini akan berusaha menawarkan salah satu dari ajaran di dalam agama Islam yang sangat menarik untuk di bahas dan di sampaikan oleh salah satu dari ulama Nusantara yang memiliki kharismatik di dalam bidang keilmuan, beliau adalah KH. Sholeh Darat yang mana bertujuan untuk menginggatkan manusia untuk sadar dan kembali kepada hakikatnya serta tidak menjadi manusia yang tamak, dan rakus akan dunia yang fana. Ajaran tersebut adalah zuhud, dimana zuhud yang berarti meninggalkan dunia, namun kebanyangkan orang salah menanggapi akan arti sebenarnya, maka perlu dikaji lebih mendalam apa sebenarnya dari zuhud tersebut. Adapun zuhud termasuk ke dalam salah satu ajaran di dalam Ilmu tasawuf , yaitu ilmu yang membahas mengenai hubungan antara hamba kepada penciptanya. Methode yang akan digunakan dalam tulisan ini berupa Library research, dengan menggunakan data yang berhubungan dengan bembahasan yang akan dibahas. Sehingga tulisan ini dapat menjadi salah satu bacaan yang dapat membantu dalam memahami ajaran zuhud didalam Islam khususnya yang disampaikan oleh KH. Sholeh Darat.
Differential expression of SGCZ in amyotrophic lateral sclerosis.
Authors: Mamoor Shahan
Published: September 2022

Neurodegenerative diseases that affect the motor neurons, including amyotrophic lateral sclerosis (ALS), have little treatment options and are generally rapidly fatal (1, 2). We harnessed the power of unbiased, whole transcriptome differential gene expression analysis, utilizing primary patient cells and tissues to discover genes whose expression defines sporadic ALS using published data (3, 4). We found significant differential expression of SGCZ, encoding sarcoglycan zeta, in primary fibroblasts of patients with sporadic ALS (SALS). SGCZ transcript was present at significantly lower levels in SALS patient fibroblasts as compared to control, non-diseased fibroblasts. These analyses will begin to define the transcriptional landscape of sporadic ALS.
Government Effectiveness, Economic Growth, Religion and the Socio-Political Role of the Middle Class in Bangladesh
Authors: Mia Rubel , Tao Jill L. , Anderson Chad
Published: September 2022

The objectives of the study are to develop an understanding of major changes such as the effectiveness of government, economic growth, religion, and the socio-political role of the middle-class people that have taken place in the society and politics of Bangladesh over the last few years. Apart from that this study also intends to analyze the crisis of the democratic system in Bangladesh and the widespread influence of religion on politicians of the society. In addition to that, the context of the developments of economic growth in Bangladesh has been significant over the last few decades, which has helped in the emergence and development of a new middle class in the country. In the past, it has been said theoretically and in the light of the experience of different countries that economic growth and development of the middle class simultaneously strengthen democracy and reduce the political appeal of religion in society and politics. All in all, this study attempted to present some hypotheses on the particular issues of Bangladesh.
Trust (Social Science)
Authors: Faber Bruner
Published: September 2022

rust is the willingness of one party (the trustor) to become vulnerable to another party (the trustee) on the presumption that the trustee will act in ways that benefit the trustor.
Using contingent valuation method to explore the households’ participation and willingness-to-pay for improved plastic waste management in North Vietnam
Authors: Thinh Nguyen An , Tran Phuong-Mai , Nguyen Thuy , Khuc Quy Van
Published: September 2022

Vietnam is one of the main plastic consumers in the world, yet there is much room for improvement in terms of plastic waste treatment. This study aims to inquire into residents’ awareness and responses to plastic waste, and their willingness to pay for enhancing plastic waste treatment in the North of Vietnam. We employ the contingent valuation method (CVM) and randomly survey 525 households in 25 provinces in Northern Vietnam. Findings suggest that a majority were interested and aware of impacts of plastic waste pollution, 76.8% were willing to contribute to a fund designated for plastic waste pollution alleviation. Residents’ willingness to pay range from VND 900,667 to VND 1,316,088 per household per month. Age, gender, perceived effects of waste pollution, illness due to pollution and care of plastic waste pollution are top factors influencing the households’ voluntary financial contribution to environmental fund. This study provides several evidence-based policy recommendations to improve the quality of plastic treatment in the North of Vietnam.
Differential expression of PRB1 in amyotrophic lateral sclerosis.
Authors: Mamoor Shahan
Published: September 2022

Neurodegenerative diseases that affect the motor neurons, including amyotrophic lateral sclerosis (ALS), have little treatment options and are generally rapidly fatal (1, 2). We harnessed the power of unbiased, whole transcriptome differential gene expression analysis, utilizing primary patient cells and tissues to discover genes whose expression defines sporadic ALS using published data (3, 4). We found significant differential expression of PRB1, encoding proline rich protein BstNI subfamily 1, in primary fibroblasts of patients with sporadic ALS (SALS). PRB1 transcript was present at significantly lower levels in SALS patient fibroblasts as compared to control, non-diseased fibroblasts. These analyses will begin to define the transcriptional landscape of sporadic ALS.
Dasar Ilmu Kesehatan
Authors: Said Siti Syur Rani
Published: September 2022

Stunting merupakan keadaan keterlambatan dalam pertumbuhan yang disebabkan oleh kurangnya asupan gizi dalam waktu yang lama pada anak.
DETERMINAN KESEHATAN (kejadian diare di Desa Gunturu Kabupatan Bulukumba)
Authors: Magfirah Siti
Published: September 2022

Diare merupakan buang air besar (defekasi) dengan jumlah yang lebih banyak dari biasanya (normal 100-200 ml perjam feses), dengan feses berbentuk cair atau setengah cair (setengah padat), dapat pula disertai frekuensi defekasi yang meningkat
Differential expression of NUMA1 in amyotrophic lateral sclerosis.
Authors: Mamoor Shahan
Published: September 2022

Neurodegenerative diseases that affect the motor neurons, including amyotrophic lateral sclerosis (ALS), have little treatment options and are generally rapidly fatal (1, 2). We harnessed the power of unbiased, whole transcriptome differential gene expression analysis, utilizing primary patient cells and tissues to discover genes whose expression defines sporadic ALS using published data (3, 4). We found significant differential expression of NUMA1, encoding nuclear mitotic apparatus protein 1, in primary fibroblasts of patients with sporadic ALS (SALS). NUMA1 transcript was present at significantly lower levels in SALS patient fibroblasts as compared to control, non-diseased fibroblasts. These analyses will begin to define the transcriptional landscape of sporadic ALS.
On the misuse of historical data to set conservation baselines: wolves in Spain as an example
Authors: Clavero Miguel , García-Reyes Antón , Fernández-Gil Alberto , Revilla Eloy , Fernández Néstor
Published: September 2022

Long-term approaches are needed to accurately assess the magnitude of biodiversity change. Mining historical documents that include wildlife citations is a promising approach to describe past species distributions and derive conservation baselines. However, historical species records have multiple biases (just as contemporary ones) and ignoring them can produce distorted views of past species distributions and misinform present-day environmental management. Here, we use recently published historical analyses of wolf (Canis lupus) range in Spain to show that failing to recognise and correct the information gaps and biases of the original data leads to a misrepresentation of the historical range of the species and a downgrading of conservation targets. We thus call for the implementation of modelling approaches, ideally using absences or informed pseudo-absences together with species records, to estimate historical species distributions.
Does Partial Blockade of Dopamine D2 Receptors with Amisulpride Cause Anhedonia? An Experimental Study in Healthy Volunteers.
Authors: Berg Max , Riehle Marcel , Rief Winfried , Lincoln Tania Marie
Published: September 2022

Background: Anhedonia is a frequent cause of functional impairment in psychosis. Although it is plausible that medication-induced D2 receptor blockade could diminish hedonic responding, there is little experimental research testing this hypothesis in humans. Methods: To inspect possible effects of partial D2 blockade on hedonic experiences, we administered 300 mg of Amisulpride or placebo to 85 participants in a randomized, double-blind, placebo-controlled trial. Participants were then subjected to an emotional evocation task utilizing standardized pictorial pleasant, neutral, and unpleasant stimuli.Results: We observed lower positivity ratings in the Amisulpride group compared to placebo across all stimulus categories (p = .026, ηp2 = .06) and no group differences in negativity or arousal ratings. The Amisulpride group also showed lower electrodermal responses across all stimulus categories compared to placebo (p = .017, ηp2 = .07). The electrodermal response was especially diminished for pleasant stimuli.Conclusion: We interpret our findings as evidence that D2 blockade via Amisulpride can reduce at-the-moment hedonic responsivity in healthy volunteers. In case these results can be confirmed in drug-naïve patients with psychosis, this could indicate that antipsychotic medication contributes to anhedonia in clinically relevant contexts, probably via antagonistic effects at the dopamine D2 receptor.
Attention-Related Problems, Personality, and Adult Attachment Anxiety and Avoidance
Authors: Collings Raymond D. , Eaton Leslie G.
Published: September 2022

The current study examines relations among individual differences in attention and attention-related problems, effortful control, and adult attachments with parents and peers. We examined two prominent hypotheses in the literature. The strategic avoidance hypothesis proposes that a lifelong pattern of using attentional avoidance to reduce attachment anxiety may lead to improved attentional abilities later in life (Mikulincer et al., 2003). The maladaptive development hypothesis suggests that atypical early attachment formation may result in long-term impairments in the attentional networks co-developing during infancy (based on Clarke et al., 2002; Ruff & Rothbart, 1996). A sample of 110 undergraduates completed a battery of computer-based behavioral measures of attention (i.e., Conners Continuous Performance Task) and self-report measures of attention problems, personality, and adult attachment. Attachment anxiety was correlated with self-report measures of attention-related difficulties with everyday tasks, providing support for the maladaptive development hypothesis. Attachment anxiety (but not avoidance) was also linked with personality traits related to effortful control (i.e., conscientiousness and ego control). Hierarchical linear regression analyses suggested that attachment anxiety moderated the relation between effortful control and attention-related difficulties with everyday tasks. The association among attachment, attention, and effortful control extends into early adulthood and varies across attachment relations. The current findings suggest that these systems may interact to facilitate emotion regulation and social functioning during early adulthood.
The effect of task-relevant and task-irrelant novel stimui on response behaviour
Authors: Hall Julie , Park Haeme R. P. , Krebs Ruth , Schomaker Judith
Published: September 2022

Novel events catch our attention, which can influence performance of a task. Whether this attentional capture by novelty benefits or impairs performance depends on several factors, such as the relevance of the stimulus, task requirements, and the timing of the event. Additionally, it has been argued that novel stimuli can hold intrinsic reward value, which may directly affect approach motivation, similar to positive valence stimuli. This link between novelty and approach/avoid behavior has not been investigated directly. Here, we investigated whether stimulus novelty interacts with response behaviour in an approach/avoidance task, and whether these effects depend on the task relevance of novelty and stimulus timing. In experiment 1, participants gave an approach or avoid response dependent on a shape (diamond or square) presented at different stimulus onset asynchronies (SOA) following a novel or familiar scene (task irrelevant novelty). In experiment 2, participants had to approach or avoid a novel or familiar image depending on the content (indoor/outdoor; task-related novelty). A shape was presented at different SOA. Results of a linear mixed model showed novelty-induced performance costs as demonstrated by longer RT and lower accuracy when novelty was task-relevant, likely due to attentional lingering at novel images. When images were task-irrelevant, approach but not avoid responses were faster for familiar versus novel images at 200 ms SOA only. Thus, novelty had a differentially pronounced detrimental effect on performance. These observations confirm that processing of novel stimuli generally depends on stimulus relevance, and tentatively suggests that differential processing of novel and familiar images is intensified by motivated approach behaviour.
A Network Study of Family Affect Systems in Daily Life
Authors: Veenman Myrthe , Janssen Loes , van Houtum Lisanne Antonetta Elisabeth Maria , Wever Mirjam , Verkuil Bart , Epskamp Sacha , Fried Eiko I , Elzinga Bernet M.
Published: September 2022

Adolescence is a time period characterized by extremes in affect and increasing prevalence of mental health problems. During this time, the family remains a crucial source of both support and stress. Prior studies have illustrated how affect states of adolescents are related to interactions with parents. However, it remains unclear how affect states among family triads, that is adolescents and their parents, are related in daily life. This study investigated affect state dynamics (happy, sad, relaxed, and irritated) of 60 family triads, including 60 adolescents, fathers and mothers. The families participated in the RE-PAIR study, where they reported their affect states in four ecological momentary assessments per day for 14 days. We performed two studies. First, we used multilevel vector-autoregressive network models to estimate affect dynamics across all families, and for each family individually. Resulting models elucidated how family affect states were related at the same moment, and over time. We identified relations from parents to adolescents and vice versa, for both positive and negative affect, such as the reciprocal relation of irritation between adolescents and their parents, while considering family variation in these relations. Second, we evaluated the statistical performance of the network model via a simulation study, varying the percentage missing data, the number of families, and the number of time points. We conclude with substantive and statistical recommendations for future research on family affect dynamics.
Instant habits versus flexible tenacity: do implementation intentions accelerate habit formation?
Authors: van Timmeren Tim , de wit sanne
Published: September 2022

Implementation intentions (strategic if-then plans) have been shown to support behaviour change. This may be achieved by mentally forming stimulus-response associations, thereby promoting habit formation. Does this deliberate attempt to install ‘strategic automaticity’ only offer advantages, or does it also come at the cost of the reduced flexibility that characterizes learnt habits? To investigate this, we tested healthy, young participants on a computerized instrumental learning task. Critically, we introduced implementation intentions (e.g., if I see stimulus X, then I will respond) versus goal intentions (e.g., for outcome Z, I will respond) during instrumental acquisition, and subsequently assessed behavioural flexibility in an outcome-revaluation test. In Experiment 1, we conducted a between-subjects manipulation of strategic planning, and in Experiment 2 a within-subject manipulation. We hypothesized that implementation intentions would lead to strong stimulus-response associations and consequently impair performance when the signalled outcome value changed and therefore required a different response, while benefitting performance when the outcome value (and required response) remained the same. We found that implementation intentions supported instrumental learning more than goal intentions, but impaired test performance overall (most robustly in Experiment 2), irrespective of whether the signalled outcome value had changed. We argue that this general detrimental effect of implementation intentions on test performance is likely a consequence of its negative effect on stimulus-outcome learning. Our findings indicate that implementation intentions may support efficient and fast behavioural execution, but warrant caution in applying these to situations where the agent does not already possess perfect knowledge of behavioural contingencies.
Estimation of the missing data in the Algerian mortality surface by using an age-time-segmented Lee-Carter Model
Authors: FLICI Farid
Published: September 2022

The implementation of mortality forecasting models requires the availability of a continuous mortality surface. In Algeria, the first life table based on civil records was constructed in 1977. At that time, the Office for National Statistics (ONS) could not ensure an annual publication of these life tables because of lack of data and technical experience. It became possible only starting from 1998. No one has tried to estimate the missing data of the period [1977-1998]. Today, it is necessary to make this data available and that is the main objective of the present paper. The idea is to use the Lee-Carter model (Lee and Carter, 1992) to estimate this missing data. For this, the model parameters were firstly estimated on the available data. Then, the time component will be fitted; the fitting function will be used to estimate the missing values. Combined with the age parameters, that leads to estimates of the missing mortality rates for males, females and both-sexes populations while improving the adequacy compared to the original data.
Differenzierung im digital durchgeführten Distanzunterricht. Eine quantitative Studie zu Implementationshäufigkeit und Prädiktoren von inklusiven Unterrichtsmaßnahmen
Authors: Letzel Verena , Pozas Marcela
Published: September 2022

Lehrkräfte sind verpflichtet, Bildung für alle Schüler*innen zu ermöglichen, und dies in jeder Unterrichtsform. Auf heterogene Bedürfnisse können Lehrkräfte eingehen, indem sie ihren Unterricht durch die Implementation von binnendifferenzierenden und individualisierenden Maßnahmen differenziert und damit inklusiv gestalten. Die Ergebnisse dieser Studie zeigen, dass Lehrkräfte im pandemiebedingten Distanzunterricht insgesamt weniger differenzierende Maßnahmen eingesetzt haben als im Präsenzunterricht und dass die am häufigsten eingesetzten Maßnahmen die zur Öffnung des Unterrichts bzw. zur Autonomiegewährung waren, genauso wie der Einsatz von abgestuften Aufgaben und Materialien. Den Einsatz differenzierender Maßnahmen flankieren das Alter, das Lernsetting, eine hohe Lehrkräfteselbstwirksamkeitserwartung, die Kollaboration mit Kolleg*innen bei der Planung differenzierten Unterrichts sowie die wahrgenommene Notwendigkeit von Differenzierung.
Das Forschungsprojekt „Gelingensbedingungen für die individuelle Förderung mit digitalen Medien in der Schule“
Authors: Gerick Julia , Schulz-Heidorf Katrin , Möhlen Lisa-Katharina , Zschiesche Barbara , Jahns Theresa
Published: September 2022

Der Beitrag stellt die Relevanz und Zielsetzung sowie das Forschungsdesign des BMBF-Forschungsprojekts „Gelingensbedingungen für die individuelle Förderung mit digitalen Medien in der Schule“ (Gelindi) vor. Zudem werden Transferperspektiven skizziert.
A study of the relationship between aggression and psychological self-satisfaction in adult domestic and working women with reference to Bhagalpur district
Authors: Kumari Annapurna
Published: September 2022

The present study was conducted in Bhagalpur city to explore the relationship between aggression and life-satisfaction in adult domestic and working women. For the study, out of 60 adult women in the age group of 35 to 65 years, 30 domestic and 30 working adult urban women were selected. Data Collection M.K. A standardized questionnaire called Aggression Inventory translated into Hindi by Sultania was used. There are 67 questions with 52 positive questions and 15 negative questions with sub-categories divided into 8 parts - assault, direct aggression, irritability, negativity, resentment, suspicion, verbal aggression and guilt. The scale administered by Dr. Sisodia and Chaudhary (2012) was used for psychological self-satisfaction. The data were analyzed using the t-ratio of the descriptive statistical method. It consists of 50 questions divided into 6 parts with sub-categories - satisfaction, competence, sociability, mental health and interpersonal behavior. All the questions in the scale are positive and there are no negative questions. The findings suggest that there is a significant positive correlation in aggression and life satisfaction among adult women, whereas there was a non-significant negative correlation in aggression and life satisfaction among late middle-aged women.

Abstract in Hindi Language:

प्रस्तुत अध्ययन वयस्क घरेलू और कामकाजी महिलाओं में आक्रामकता और जीवन-संतुष्टि के बीच संबंधों का पता लगाने के लिए भागलपुर शहर में किया गया है। अध्ययन के लिए 35 वर्ष से 65 वर्ष के आयु वर्ग के 60 वयस्क महिलाओं मे से 30 घरेलू और 30 कामकाजी वयस्क शहरी महिलाओं को चुना गया था। आंकड़ा संग्रह एम. के. सुल्तानिया द्वारा हिन्दी अनुवादित एग्रेसन इन्वेंटरी नामक मानकीकृत प्रश्नावली का उपयोग किया गया था। 8 भागों में विभाजित उप-श्रेणियों - हमला, प्रत्यक्ष आक्रामकता, चिड़चिड़ापन, नकारात्मकता, आक्रोश, संदेह, मौखिक आक्रामकता और अपराधबोध के साथ 67 प्रश्न हैं जिसमें 52 सकारात्मक प्रश्न तथा 15 नाकारात्मक प्रश्न हैं। मनोवैज्ञानिक आत्म संतुष्टि के लिए डॉ. सिसोदिया और चैधरी (2012) द्वारा प्रशासित मापनी का उपयोग किया गया था। आकड़ों का विश्लेषण वर्णनात्मक सांख्यिकीय पद्धति का टी-अनुपात उपयोग करके किया गया था। इसमें 6 भागों में विभाजित उप-श्रेणियों - संतुष्टि, योग्यता, सामाजिकता, मानसिक स्वास्थ्य और अन्तःव्यक्तित्व व्यवहार के साथ 50 प्रश्न हैं। पैमाने में सभी प्रश्न सकारात्मक हैं और कोई नकारात्मक प्रश्न नहीं है। निष्कर्षों से पता चलता है कि वयस्क महिलाओं में आक्रामकता और जीवन संतुष्टि में एक महत्वपूर्ण सकारात्मक सह-संबंध है, जबकि देर से मध्यम आयु वर्ग की महिलाओं के बीच आक्रामकता और जीवन संतुष्टि में गैर-महत्वपूर्ण नकारात्मक सहसंबंध था।

Keywords: वयस्क महिला, घरेलू महिला, कामकाजी महिला, आक्रामकता, मनोवैज्ञानिक आत्म संतुष्टि
Biocompatible Nanostructured High Velocity Oxy-Fuel (HVOF) Sprayed Titania Coating
Authors: Lima R.S. , Marple B.R. , Li H. , Khor K.A.
Published: September 2022

Nanostructured titania (TiO2) coatings were produced by high velocity oxy-fuel (HVOF) spraying. They were engineered as a possible candidate to replace hydroxyapatite (HA) coatings produced by air plasma spray (APS) on implants. They exhibited mechanical properties, such as hardness and bond strength, much superior to those of APS HA coatings. In addition to these characteristics, the surface of the nanostructured coatings exhibited regions with nanotextured features originating from the semi-molten nanostructured feedstock particles. This nanotexture is considered an asset, due to its better interaction with the adhesion proteins of the osteoblast cells, such as fibronectin, which exhibit dimensions in the order of nanometers. Osteoblast cell culture demonstrated that this type of coating supported osteoblast cell growth and did not negatively affect cell viability.
Development of Osteoblast Colonies on New Bioactive Coatings
Authors: Legoux J.-G. , Chellat F. , Lima R.S. , Marple B.R. , Bureau M.N. , Shen H. , Candeliere G.A.
Published: September 2022

The aging baby boomer population coupled with an increase in life expectancy is leading to a rising number of active elderly persons in occidental countries. As a result, the orthopedic implant industry is facing numerous challenges such as the need to extend implant life, reduce the incidence of revision surgery and improve implant performance. This paper reports results of an investigation on the bioperformance of newly developed coating-substrate systems. Hydroxyapatite (HA) and nano-titania (nano-TiO2) coatings were produced on Ti-6Al-4V and fiber reinforced polymer composite substrates. In vitro studies were conducted in order to determine the capacity of bioactive coatings developed to sustain osteoblast cells (fetal rat calvaria) adherence, growth and differentiation. As revealed by SEM observations and alkaline phosphatase activity (ALP), cell adhesion and proliferation demonstrated that HA coatings over a polymer composite are at least as good as HA coatings made over Ti-6Al-4V substrate in terms of osteoblast cell activity. Nano-TiO2 coatings produced by high-velocity oxy fuel (HVOF) spraying led to different results. For short term cell culture (4.5 and 24 hrs), the osteoblasts appeared more flattened when grown on nano-TiO2 than on HA. The surface cell coverage after 7 days of incubation was also more complete on nano-TiO2 than HA. Preliminary results indicate that osteoblast activity after 15 days of incubation on nano-TiO2 is equivalent to or greater than that observed on HA.
Investigation of the Interface Strength of Hydroxyapatite Coating by the LASAT (Laser Shock Adhesion Test) Method
Authors: Bansard S. , Khor K.A. , Borit F. , Guipont V. , Jeandin M. , Nivard M. , Berthe L.
Published: September 2022

A good adhesion of plasma sprayed hydroxyapatite (HA) coating on Ti-based alloy is crucial for ensuring highly-reliable non cemented implants in the biomedical industry. In the present work, the laser shock adhesion test, namely LASAT, has been applied to investigate the interface strength of plasma sprayed HA coatings. This contact less method allowed a rapid assessment of the HA coating adhesion on simple coated plates. Varying the laser energy to impact the substrate and to generate the interface decohesion, a LASAT adhesion threshold can be determined for the highest laser fluence (J/m²) for which no debonding of the coating occurred. This qualitative and discerning LASAT procedure has been carried out on HA coatings to investigate the role of various interfaces on the adhesive property of the HA/Ti bond. According to the LASAT analysis, a surface roughness prepared with medium or coarse grit-blasting did not influence drastically the adhesion threshold while smooth pre-oxidized specimens LASAT threshold were near to those obtained with a Ti bond-coat. These thresholds also corresponded with the highest adhesion measured in this study. In addition, pre-heating treatment of substrates just prior to spraying up to 270°C did not exhibit a significant difference with grit-blasted HA/Ti interface. Further investigations (SEM, XRD) was also achieved to investigate the interface characteristics before and after the laser treatment. Sample cross-sections of laser shocked specimens were examined in detail, right at the impact location and within the debonding area to assess the fracture feature. This complementary materials analysis permitted to establish the relevance of the LASAT test as a fast and easy-to-use method devoted to the design or the control of highly adhesive HA coatings. Preliminary experiments to apply the LASAT method in liquid environment is described. Further work is on progress to implement an in situ adhesion testing of HA coating in simulated body fluid.
Mechanical Properties and Corrosion Resistance of Cold Sprayed Coatings
Authors: Mäkinen H. , Lagerbom J. , Vuoristo P.
Published: September 2022

Cold spraying is quite a new process, which is an effective method to deposit dense and pure coatings. The aim of this study was to investigate microstructures and mechanical properties (hardness and adhesion) of the cold sprayed coatings. The coating materials were aluminium, copper, nickel and zinc. The substrate materials were carbon steel and copper. Influence of heat treatments on mechanical properties was studied, especially different heat treatment times and temperatures. The hardness of the cold sprayed coatings was higher than that thermally sprayed coatings and bulk materials. During heat treatment, the hardness of the cold sprayed coatings decreased and the ductility increased. Corrosion resistance of cold sprayed coatings was also studied. The corrosion resistance was tested with salt spray (fog) testing and open cell potential measurements. The corrosion tests showed some through-porosity but some parts of the cold sprayed coatings appeared to be fully dense, which showed their potential for corrosion protection.
Optimal Design of a Convergent-Barrel Cold Spray Nozzle by Numerical Method
Authors: Li W.-Y. , Liao H.L. , Zhang G. , Coddet C. , Wang H.-T. , Li C.-J.
Published: September 2022

A convergent-barrel (CB) cold spray nozzle was designed through numerical simulation. It was found that the main factors influencing significantly the particle velocity and temperature include the length and diameter of the barrel section, the nature of the accelerating gas and the operating gas pressure and temperature, and the particle size. Particles can achieve a relatively low velocity but a high temperature under the same gas pressure using a CB nozzle compared to a convergent-divergent (CD) nozzle. The experiment results with Cu powder using the designed CB nozzle confirmed that the deposition can be realized under a lower gas pressure with a CB nozzle.
Simulation of Particle-Shock Interaction in a HVOF Process
Authors: Srivatsan V.R. , Dolatabadi A.
Published: September 2022

High Velocity Oxygen Fuel Process (HVOF) involves supersonic two-phase flow of gas-solid particles. Two kinds of shocks are formed in a typical HVOF process. Adjustment of the over-expanded flow to the atmospheric pressure at the exit of the nozzle results in formation of shock diamonds while high speed flow impingement on a substrate creates bow shock. The latter is found to be responsible for deviation of the injected particles from their trajectories near the substrate which significantly reduces the chance of some particles landing on the substrate. An attempt is made to study the behavior of particle trajectory as it interacts with the bow shock formed near the substrate. The strength and location of bow shock was found to vary for different substrate geometries and stand-off distances. In this work, various particle sizes impinging on substrates with various configurations (flat, concave and convex) are simulated and the effect of shock diamonds and bow-shock, on particle trajectory is studied.
Modeling and Validation of Substrate Heat Transfer Coefficient Distribution in Vacuum Plasma Spraying
Authors: Davis E.S. , Duncan S.R. , Grant P.S.
Published: September 2022

As the initial step of a process control design for a substrate surface temperature control solution for Vacuum Plasma Spraying (VPS), the distribution of heat transfer coefficient h between impinging plasma gases and the substrate coating surface is required. An embedded calorimeter approach was used to measure the distribution of the convective heat transfer coefficient over the surface of a substrate and the resulting distributions have been compared with empirical correlations and CFD model predictions of the plasma jet/substrate interaction, as a function of VPS process parameters.
RF Plasma Deposition of Refractory Metals Case Study for Tungsten
Authors: Kovářík Ondřej , Xue Siwen , Fan Xiaobao , Boulos Maher
Published: September 2022

The paper presents an integrated study of the effects of RF plasma spray process parameters on the particle melting, particle spheroidisation and acceleration in the plasma, particle-substrate interactions and final deposit properties. Particle temperatures and velocities have been studied, by both experimental and numerical simulation methods, as functions of spray particle diameters. In-flight spheroidisation behavior was also observed by means of a particle capturing technique while splat formation was studied on polished stainless steel substrates. Optimized process parameters were then estimated and used to produce deposits on stationary substrates. Deposit properties, such as splat shape and crystal grain morphologies, apparent densities and deposition efficiencies were observed and processing parameters further optimized. The results obtained indicate that the advantages of the RF inductively coupled plasma spray technique, such as the longer particle residence time in the plasma and “cleanliness” of the process can be efficiently utilized to deposit dense tungsten metal parts or coatings.
Simulation Results of Arc Behavior in Different Plasma Spray Torches
Authors: Trelles J.P. , Heberlein J. V. R.
Published: September 2022

Three-dimensional, transient simulations of the plasma flow inside different plasma spray torches have been performed using a local thermodynamic equilibrium model solved by a multiscale finite element method. The model describes the dynamics of the arc without any further assumption on the reattachment process except for the use of an artificially high electrical conductivity near the electrodes. Simulations of an F4-MB torch from Sulzer-Metco and two configurations of the SG-100 torch from Praxair are presented. The simulations show that, when straight or swirl injection is used, the arc is dragged by the flow and then jumps to form a new attachment, preferably at the opposite side of the original attachment, as has been observed experimentally. Although the predicted reattachment frequencies are at present higher than the experimental ones, the model is suitable as a design tool.
Metal-Glass Composites for Application in TBC Systems
Authors: Mack D.E. , Gross S.-M. , Vaßen R. , Stöver D.
Published: September 2022

A new type of thermal barrier coating (TBC) based on metal-glass composite (MGC) has been recently presented. Beside the availability of conventional manufacturing routes of the coating, e.g. by vacuum plasma spraying (VPS) or slip casting, there are two main advantages of the new TBC: The thermal expansion coefficient can be easily adjusted to the substrate by changing the metal to glass ratio of the composite and the severe oxidation of the bondcoat layer can be reduced due to the gastightness of the glassy phase. Nevertheless, oxidation of the metal phases cannot be fully suppressed up to now. Concepts for a multilayer system and an improved oxidation resistance of a MGC based on suitable heat treatments and on alternative glass compositions have been developed. Results from isothermal oxidation experiments and from thermal cycling in burner rig facilities will be discussed.
Process Residual Stresses and High Temperature Oxidation Performance of Thermal Barrier Coatings
Authors: Lima C. R. C. , Nin J. , Guilemany J.M.
Published: September 2022

Thermal barrier coatings (TBCs) allow increasing combustion temperatures of gas turbines and diesel engines thus improving the system performance. Residual stresses due to the differences of thermal expansion coefficient between metallic bond coat and ceramic top coat as well as the stresses due to the oxidation of the bond coat and the consequent increase in the thermally grown oxide (TGO) layer lead to ceramic debonding and subsequent failure of the thermal barrier system in service conditions. Extensive research has been carried out to minimize such events by applying multilayered coatings, intermediate diffusion or protective layers and other methods. In this work the TBC systems were obtained by applying distinct bond coats and top coats. The bond coats were applied by High Velocity Oxygen Fuel (HVOF) and the ceramic top coats were applied by Air Plasma Spraying (APS). Residual stresses were measured by the Modified Layer Removal Method (MLRM). Isothermal high temperature oxidation tests were performed and the results were correlated with the post spraying stress state and the coating thermal history. Results show that the residual stresses are mainly influenced by the thermal history regarding the quenching of individual splats and the plastic deformation of ceramic deposits.
Effect of Particle Impact on Residual Stress Development In HVOF Sprayed Coatings
Authors: Bansal P. , Shipway P.H. , Leen S.B.
Published: September 2022

The application of thick HVOF coatings on metallic parts has been widely accepted as a solution to improve their wear properties. The adherence of these coatings to the substrate is strongly influenced by the residual stresses generated during the coating deposition process. In an HVOF spraying process, due to the relatively low processing temperature, significant peening stresses are generated during impact of semi-molten particles on the substrate. At present, FE models of residual stress generation for the HVOF process are not available due to the increased complexities in modelling the stresses generated due to the particle impact. In this work, deposition of an HVOF sprayed copper coating on a copper substrate is considered as an example system. An explicit finite element analysis is carried out to study the effect of particle impingement. The results from the analysis are subsequently used in a thermo- mechanical FE model to allow the development of the residual stresses in these coatings to be modelled.
The Effect of the Substrate Hardness on Particle Morphology in High Velocity Thermal Spray Coatings
Authors: Neufuss W. , Dyshlovenko Trompetter , Markwitz A. , Hyland M. , McGrouther D. , Munroe P.
Published: September 2022

In this study, Ni-chrome alloy particles were thermally sprayed onto a variety of substrate materials using the high velocity air fuel (HVAF) technique. Although the various substrate materials were sprayed using identical powder material and thermal spray conditions, the type and variation of splat morphologies was strongly dependent on the substrate material. Predominantly solid particles are observed penetrating deeply into softer substrates, such as aluminium, whereas molten splats were observed in harder substrates, which resisted particle penetration. While the observed correlation between molten splats and substrate hardness could be due a dependency of deposition efficiencies of solid particles and molten splats on the substrate material, it was found that conversion of particle kinetic energy into plastic deformation and heat, dependent on substrate hardness, can make a significant contribution towards explaining the observed behaviour.
Relationship Between the Suspension Properties and Liquid Plasma Sprayed Coating Characteristics
Authors: Toma F.L. , Bertrand G. , Rampon R. , Klein D. , Coddet C.
Published: September 2022

The suspension plasma spraying using a liquid as material feedstock is a promising technique to elaborate thin and nanostructured coatings. This work deals with the study of suspensions in order to obtain specific microstructural coatings. The slurries were prepared starting from nanosized titania powders. Distilled water and alcohol were used as solvents and appropriate dispersing agents were employed to stabilize the suspensions. An external injection system that ensures the atomisation and radial injection of the suspension into Ar-H2 plasma under atmospheric conditions was designed. The coatings were characterized by scanning electron microscopy and differences in the microstructure of the deposits were observed. Efforts were made to understand the relationship between liquid feedstock properties, injection/plasma parameters and coatings microstructural characteristics.