Simultaneous Contribution Research Articles

Targeting Bone Tumours with 45S5 Bioactive Glass.

Despite advances in treatment modalities, bone tumour therapies still face significant challenges. Severe side effects of conventional approaches, such as chemo- and radiation therapy, result in poor survival rates and high tumour recurrence rates, which are the most common issues that need to be improved upon. The aim of this study was to evaluate the therapeutic properties of 45S5 bioactive glass (BG) for targeting bone tumours. The viability of the cells derived from osteosarcoma, chondrosarcoma, and giant cell tumours was significantly reduced in the presence of 45S5-BG. In contrast, the viability of non-malignant osteoblast-like cells, chondrocytes, and bone marrow-derived stromal cells was not or only slightly affected. While alterations to the particle surface induced by heat treatment, acid etching, or incubation in a simulated body fluid had only minor effects on cytotoxicity, reducing the particle size or sintering the material significantly improved the cytotoxic effect of 45S5-BG. Further, using a chicken chorioallantoic membrane assay, the co-transplantation of 45S5-BG resulted in a significant reduction in tumour formation in vivo. Given the known positive effects of BGs on bone regeneration, our findings suggest that 45S5-BG holds great potential for the development of new and effective bone tumour therapies, with minimal side effects on non-malignant cells and simultaneous contribution to bone healing.

The Relationship between Self-Concept and Job Satisfaction on the Performance of Private High School Teachers

This study aims to find out and analyze: (1) The relationship between self-concept and teacher’s performance, (2) the relationship between job satisfaction and teacher’s performance, (3) the relationship between self-concept and job satisfaction together on teacher’s performance. This study is quantitative research with partial correlation and multiple correlation methods. This research was conducted at a private high school in Seberang Ulu 1 District, Palembang with 89 teacher respondents. Data collection techniques are in the form of questionnaires and documentation. The validity test uses the validity of the construct while the reliability test uses Cronbranch Alpha. The prerequisite test for analysis uses the normality test, linearity test, multicollinearity test and the data are analyzed using partial correlation analysis and multiple correlation followed by the t-test. The results of this study showed that there was a significant relationship between self-concept and job satisfaction on the performance of private high school teachers in Seberang Ulu 1 District, Palembang with a correlation value of 0.533, the simultaneous contribution or contribution of self-concept and job satisfaction variables to teacher’s performance was 28.4% while 71.6% was determined by other variables.

Separating Hofmeister Trends in Stern and Diffuse Layers at a Charged Interface.

Understanding the role of pH and ions on the electrical double layer (EDL) at charged mineral oxide/aqueous interfaces remains crucial in modeling environmental and industrial processes. Yet the simultaneous contribution of pH and specific ion effects (SIEs) on the different layers of the EDL remains unknown. Here, we utilize zeta potential measurements, vibrational sum frequency generation, and the maximum entropy method to ascertain the detailed structure of the Stern and diffuse regions of the EDL at the silica/water interface with varying pH values for different alkali chlorides. Both at pH 2, when the surface is nearly neutral, and at pH 12, when the surface is highly charged, we observe that Li+ and Na+ disrupt while Cs+ enhances existing water structures within the Stern layer. Moreover, the SIE trends for the diffuse and Stern layers are opposite to one another at pH 2 (in the amount of ordered water) and at pH 12 (in the amount of net oriented water). Finally, we observe an inversion in Hofmeister (SIE) trends at low and high pH in the zeta that impacts the diffuse layer structure. These results indicate that SIEs play critical yet separable roles in governing both the electrostatic and water-structuring capabilities of the EDL.

Persepsi Terhadap Kekerasan Domestik Berdasarkan Sudut Pandang Religiusitas dan Peran Sosial

The city of Semarang is a city that is increasingly developing and is pursuing policies to become a decent, safe and livable city. However, cases of violence still occur and have even increased. The efforts made are to provide education and assistance to the community, with the hope of providing understanding and improving morals. The existence of the situation, the efforts of the City of Semarang to create a safe situation but it turns out that it still occurs and even the number of cases of domestic violence has increased, raising the question of how society perceives violence. When it is shown that most of the perpetrators are those closest to them, even their own parents, another question arises, namely whether society, especially, has learned and understood their social roles in the family, whether as father, mother, wife, husband, and/or other social roles. Coupled with the condition as an adult human being which should also be increasingly mature in terms of religiosity, this also raises the question of whether religiosity still has an influence on perceptions of domestic violence. The results of the research analysis show that the magnitude of the relationship between Religiosity and Social Roles and Perceptions of Domestic Violence has a correlation coefficient value of 0.542 with a sig value = 0.000, meaning that there is a very significant relationship between Religiosity and Social Roles and Perceptions of Domestic Violence so that the hypothesis is accepted. Meanwhile, the simultaneous contribution of Religiosity and Social Role to Perceptions of Domestic Violence is 29.4% and 70.6% determined by other variables

The Influence of Restaurant Atmosphere on Customer Satisfaction in Sum Ting Wong Kitchen and Brew Bar

This research aims to determine: The influence of restaurant atmosphere on customer satisfaction at Sum Ting Wong Kitchen and Brew Bar. This research is a descriptive analysis research using a quantitative approach. Data collection uses observation, documentation and questionnaires. The sample in this study was 35 respondents and used the random sampling method. The validity test used Cronbach's Alpha. Data analysis uses simple linear regression. The research results found that: restaurant atmosphere had a positive and significant effect on customer satisfaction, obtained a sig value. 0.000 <α 0.005 indicates that H1 is accepted. The simultaneous contribution or contribution of the restaurant atmosphere variable to customer satisfaction is 75.3% while 24.7% is determined by other variables not examined in this study. Keywords: Restaurant Atmosphere, Customer Satisfaction

Ductility demand estimation of high-rise steel special moment frames due to structure-pile-soil interaction

ABSTRACT This study is concerned with variation of ductility demands in a range of tall buildings comprising 15, 20, 25, and 30-story steel special moment frames resting on pile groups in a flexible soil medium. Nonlinear soil–structure interaction analysis is performed using the direct method by considering an adequate extent of soil around the structures terminating at appropriate boundaries. Eleven consistent ground motions are used for nonlinear dynamic analysis of the systems and the ductility demands are evaluated by tracing the rotation history of the plastic hinges. It is concluded that simultaneous contribution of soil–structure interaction and p-∆ effect results in more than 40% increase of the ductility demand and 20% increase of the story drifts in the worst case that includes the lower stories of the tallest building.

Basketball Dribble in Students of SMA Negeri 9 Makassar (Correlation of Arm Muscle Strength, Speed and Agility)

This research is a descriptive quantitative study which aims to determine the contribution of arm muscle strength, speed and agility to the basketball dribbling ability of class XI students at SMA Negeri 9 Makassar. The population of this study was class XI students of SMA Negeri 9 Makassar with a total sample of 43 people selected using a simple random sampling technique. Based on the results of data analysis, the following results were obtained: (1) The agility level of class XI students at SMA Negeri 9 Makassar was in the "good" category with a percentage of 27.96%, (2) The speed level of the class medium” with a percentage of 27.90%. (3) The level of arm muscle strength of class percentage of 69.76%. (5) There is a simultaneous contribution of arm muscle strength, speed and agility to the basketball dribbling ability of class .1%. With the following contribution percentages, arm muscle strength is 17.82%, speed is 29.80%, and agility is 33.76%, while 18.9% is influenced by other factors.

A Self-Reported Study on Explanatory Variables of Stress in Multiple Sclerosis Patients: Exploring the Effect of Physical Conditions and Emotion Regulation Processes.

Multiple sclerosis (MS)-linked stress is frequent, multidetermined and facilitates the onset/exacerbation of MS. However, few explanatory models of stress analysed the joint explanatory effect of emotion regulation and clinical outcomes of MS in those patients. This study explored whether self-reported MS-related conditions (number of relapses, fatigue and global disability) and specific emotion regulation processes (experiential avoidance and self-compassion) explain stress symptoms in MS patients. The MS sample comprised 101 patients with MS diagnosis receiving treatment in hospitals and recruited through the Portuguese MS Society. The no-MS sample included 134 age-, sex- and years of education-matched adults without MS recruited from the general Portuguese population. Both samples did not report other neurological disorders. Data were collected using self-response measures. All potential explanatory variables differed significantly between samples, with higher scores found in MS patients. In MS clinical sample, those variables and years of education correlated with stress symptoms and predicted stress symptoms in simple linear regression models. These results allowed their selection as covariates in a multiple linear regression model. Years of education, the number of relapses, fatigue and experiential avoidance significantly predicted 51% of stress symptoms' total variance. This study provides preliminary evidence on the importance of clinicians and researchers considering the simultaneous contribution of years of education, the number of perceived relapses, fatigue and experiential avoidance as factors that can increase vulnerability to stress in MS patients. Psychological intervention programmes that tackle these factors and associated stress symptomatology should be implemented.

Pengaruh Kompetensi dan Lingkungan Kerja terhadap Kinerja Pegawai Biro SDM Polres Karawang

Viranty Herlyna Putri, 2023. The influence of competency and work environment on employee performance Biro SDM Polres Karawang. Thesis. Faculty of Economics. University of Singaperbangsa Karawang. In this study, it is related to the influence of competency and work environment on employee performance Biro SDM Polres Karawang. The quantitative method used in this study along with descriptive and verification approaches. Quantitative methods are relied on in this case along with descriptive and verification approaches. The primary data relied on in this case, namely questionnaires and unstructured interviews, non-probability sampling technique is the technique for collecting data for this research. Employees at the Karawang Police HR Bureau are the population in this study, with a total of 59 employees, in determining the sample by relying on saturated sampling, there were 59 employees consisting of Polri and ASN or PNS Polri. The success of this research using Microsoft Word, Microsoft Excel and SPSS 24. In this study, it provides the fact that there is a significant parcial effect on the competence variable of 0,41% and the work environment variable of 44,1% on employee performance at Biro SDM Polres Karawang. Furthermore, there is a simultaneous effect on competence and work environment variables on the performance of Biro SDM Polres Karawang with simultaneous value contribution reaching 74,4% and the remaining 25,6% is contribution of other variables not examined in this study.

The Contribution of Environmental Vocabulary and Reading Interest in EFL Students’ Writing Skills of Exposition Texts

This research is motivated by the low interest in reading that students have. The low interest in reading makes the lack of vocabulary mastery. The purpose of this study is to explain the contribution of environmental vocabulary mastery and reading interest to students' expository text writing skills. This type of research is quantitative research. The method used in this research is descriptive method. The research data were obtained from the final test results of exposition text writing skills of class X students of SMK Negeri 1 Bandar Sungai Kijang, Pelalawan Regency, Riau. Instruments to collect vocabulary mastery data using objective tests, reading interest using questionnaire techniques / research instruments, while to collect data on exposition text writing skills using written tests. The technique of analyzing data used in this research is descriptive and inferential statistics. The results showed that there was a significant contribution between the mastery of vocabulary in the environmental field to the skill of writing exposition texts of Class XI students of SMK Negeri 1 Bandar Sungai Kijang Regency Pelalawan Riau. This means that the better the mastery of vocabulary in the environmental field of students, the better the degree of writing skills of the student's exposition text. Then there is a significant contribution between reading interest and exposition text writing skills of Class XI students of SMK Negeri 1 Bandar Sungai Kijang Regency Pelalawan Riau. This means that the better the student's interest in reading, the higher the degree of skill in writing the student's expository text. Finally, there is a simultaneous contribution between the mastery of vocabulary in the environmental field and reading interest to the exposition text writing skills of Grade XI students of SMK Negeri 1 Bandar Sungai Kijang Regency Pelalawan Riau.

Modelling the material removal obtained using a pneumatically configurable polishing tool subjected to a reciprocating linear feed

A nanofinishing technique - Pneumatically Configurable Polishing (PCP) process can be used for producing surface roughness of the order of a few nanometers on surfaces. It is a deterministic polishing process which employs pneumatic pressure for precise control of finishing forces across the polishing spot. The material removal rate is an important characteristic for determining the final surface generated after polishing. The material removal mechanism of PCP process typically exhibits multidisciplinary complexity due to simultaneous contribution of various process parameters. A mathematical model has been proposed in this study to achieve an in-depth understanding of the process physics. The model is developed using the fundamental tenets of contact behaviour between the tool and workpiece, and study of the microscopic material removal caused by a single abrasive particle. The polishing tool undergoes a reciprocating linear feed to polish a linear strip of the work surface. Various process parameters such as feed rate, tool rotational speed, working gap, mean diameter of abrasive particles, slurry concentration etc have been incorporated in the model as per the physics of the process. In order to validate the model, finishing experiments and MATLAB simulations have been conducted under similar polishing conditions to estimate the prediction error. The material depth removal rate in the PC polishing of die steel was found to range between 39 nm/min and 257 nm/min. The error between the experimental and predicted values of material removal rate was found within a range of 2.7 %–15.9 %. The repeatability of final surface roughness values and MRR obtained is ±0.007 μm and ±10 nm/min respectively. The developed model helps to make the PCP process more predictable and provides valuable insights into the various parameters which predominantly affect the material removal. The simulation of the gradual evolution of the surface profile has been obtained using the developed model.

The Relationship between the Social Support of Principal and Self-Compassion of School Counselors to the Performance of School Counselors

In this study, 115 people participants were selected through a simple random sampling using a lottery technique. The research data was collected using a Likert scale with three types of research instruments, namely the social support instrument, which consisted of 32 valid items with a reliability coefficient of 0.769. The self-compassion instrument consists of 26 valid items with a Cronbach's alpha of 92. The performance instrument consisting of 15 valid items with a reliability coefficient of 0.878. Simultaneous test results using an Fcount of 5.203 (Fcount>Ftable) with a significance of 0.007. These results indicate that there is a significant relationship between social support and self-compassion to the performance of school counselors. The partial correlation test shows that there is a significant positive relationship between social support and performance and self-compassion to the performance, as indicated by the values (r) 0.437 and 0.243 with a significance of 0.007 and 0.009 (p 0.05). The R2 value is 0.298, in which social support and self-compassion make a simultaneous effective contribution of 29.8% to performance. Social support provides a greater relationship to performance than self-compassion with an effective contribution of 21.4% for social support and 8.4% for self-compassion. Therefore, it can be concluded that all the hypotheses put forward confirmed to be proven in the sense that the higher the social support and self-compassion is, the higher the performance of school counselors in Central Jakarta.

Electrical characterization of Sn modified barium bismuth zirconate

BaBi4Sn4O15, a Sn-modified ceramic sample of layered ferroelectric oxide family, is developed using a high-temperature mixed oxide route after firing for calcination at 810 °C for 6 h in steps of 50 °C starting from 600 °C. An introductory XRD study of the compound displays the development of the new orthorhombic structured single-phase compound at atmospheric conditions. The electrical behaviors of the compound are investigated in a wide temperature span (30–500 °C) and frequencies ranging from 0.1 kHz to 1 MHz using an impedance analyzer. Dielectric behavior informs that the compound has a phase transition from Ferro to Paraelectric at 370 °C, which is well above room temperature. The impact of temperature and frequency on complex immittance parameters (impedance and modulus) is analyzed using an LCR meter in a broad temperature & frequency span. The electrical properties confirm; (a) the existence of semiconductor-like NTCR (negative temperature coefficients of resistance) behavior, (b) the evidence of the electric relaxation process as a function of temperature, (c) the existence of electric relaxation ascribed to the simultaneous contribution of bulk & bulk interfaces to the electrical behavior, and (d) presence of the non-Debye type relaxation phenomena. The frequency-dependent conductivity follows Jonscher’s universal power law.

Effects of High Frequency Chest Wall Oscillation (HFCWO) on Clinical Symptoms in COPD

Background: Mucociliary clearance plays a critical role in pulmonary host defense. Abnormal mucociliary clearance contributes to the pathogenesis of pulmonary disorders, including COPD. In bronchiectasis, treatments targeting mucus obstruction in the airways include the use of high frequency chest wall oscillation (HFCWO) therapy. This prospective outcome based study was designed to investigate the changes in symptoms and quality of life (QOL) to measure the effect of adjunctive HFCWO therapy to standard of care therapy for patients with COPD. Research Question: When HFCWO is indicated and used as intended, will the quality of life for those patients with COPD improve and sustain improvement. Study Design and Methods: We conducted a prospective, openl-label, observational study in COPD patients without concomitant bronchiectasis. Participants had assessments of QOL at baseline (day 0) and then at 30 and 90 days after initiation of HFCWO therapy. The St. George’s Respiratory Questionnaire for COPD Patients (SGRQ-C) was employed and longitudinally followed at each timepoint. Paired t-tests were used to compare means between each time points adjusted for multiple comparisons. A linear mixed model for the analysis of longitudinal data was then constructed to determine the simultaneous contribution of race, gender, ethnicity, time, and selected interactions in the primary outcome of change in SGRQ-C across 0, 30, and 90 days . Results: The cohort of patients (n=102) demonstrated a significant reduction in the SGRQ-C at 30 and sustained at 90 days compared to baseline. In addition, two component scores of the SGRQ-C questionnaire (“Symptoms” and Impacts”) were significantly reduced at 30 and 90 days. Interpretation: This prospective, observational study demonstrates statistically significant and clinically favorable responses to HFCWO as an adjunctive therapy for patients with a primary diagnosis of COPD without concomitant bronchiectasis. Results of this study inform the design of additional additional studies of HFCWO to prove efficacy inCOPD patients.

The Contribution of Leadership Style, Work Motivation, Work Climate and Job Satisfaction To Employee Performance in The Undiksha Akpk Environment. Thesis. Departement of education Administration.

This study aims to 1) analyze the contribution of leadership style to employee performance in the AKPK Undiksha environment, 2) analyze the contribution of work motivation to employee performance in the AKPK Undiksha environment, 3) analyze the contribution of the work climate to employee performance in the AKPK Undiksha environment, 4) analyze the contribution job satisfaction on employee performance in Undiksha AKPK environment, 5) analyze the contribution of leadership style, work motivation, work climate and job satisfaction to employee performance in Undiksha AKPK environment simultaneously. This research is an ex post-facto research. The population which is also the sample in this study are all employees in the Undiksha AKPK environment, totaling 40 employees. The independent variables in this study are leadership style, work motivation, work climate and job satisfaction, while the dependent variable is employee performance. The data collection method used in this study was a questionnaire. Data analysis used in this study is multiple regression and partial correlation. Based on the research that has been done, it is concluded that: 1) there is a significant contribution of leadership style to employee performance in the Undiksha AKPK environment, 2) there is a significant contribution of work motivation to employee performance in the Undiksha AKPK environment, 3) there is a significant contribution to the work climate employee performance in Undiksha AKPK environment, 4) there is a significant contribution of job satisfaction to employee performance in Undiksha AKPK environment, and 5) there is a simultaneous significant contribution of leadership style, work motivation, work climate and job satisfaction to employee performance in Undiksha AKPK environment.

Contribution of Compensation, Motivation, Infrastructure and Work Environment to the Performance of Non-Certified Teachers at Private Madrasah Tsanawiyah (MTs) in Tabanan Regency

This study aims to determine the magnitude of the significant simultaneous contribution between compensation, motivation, infrastructure and work environment on the performance of non-certified teachers at private Madrasah Tsanawiyah (MTs) in Tabanan Regency. The type of research used in this study is quantitative using a correlational study type of research. The population in this study were teachers at private Madrasah Tsanawiiyah in Tabanan Regency, both those with ASN status, Permanent Foundation Teachers or Non-Permanent (Honorary) Teachers. Sampling uses saturated sampling, namely 58 teachers. Methods of data collection by observation, questionnaires, interviews, and documentation. The collected data were analyzed by descriptive analysis, Simple Linear Regression Analysis, and Multiple Regression Linear Analysis, as well as t test and F Level Significance test. The results of the study show that there is a significant simultaneous contribution of compensation, motivation, infrastructure and work environment to the performance of non-certified teachers at private Madrasah Tsanawiyah (MTs) in Tabanan Regency. 66% of teacher performance is influenced by compensation, motivation, infrastructure and work environment, the rest is influenced by other factors not mentioned in this study

The Contribution of Moral Knowing, Moral Feeling and Moral Action to Social Competence of Educators in Fakfak District

Field facts show that in Fakfak Regency there are still many problems of pros and cons between fellow educators. Based on field facts, it can be concluded that the level of social competence of educators is still very low. Social competence itself can be influenced by three factors, namely moral feeling, moral action, and moral knowing. The aim of this research is to find out whether there is a contribution between moral knowing and the social competence of educators, to find out whether there is a contribution between moral feeling and the social competence of educators, to find out whether there is a contribution between moral action and the social competence of educators, to find out whether there is a contribution between moral knowing, moral feeling and moral action on the social competence of educators. This research uses a quantitative approach with multiple linear regression analysis techniques. The population used in this research were educators at Fakfak Regency Elementary Schools. The data collection techniques used were observation, interviews and questionnaires using Google Form. The results of this research are that there is a partial contribution, namely between moral knowing towards the social competence of educators, moral feeling towards the social competence of educators, and moral action towards the social competence of educators. Next, namely the simultaneous contribution of moral kowing, moral feeling and moral action to the social competence of educators. Key words : moral knowing, moral feeling, moral action, social competence.

The Impact of Religiosity and Social Support on Psychological Well-Being among Tahfidz Students

High school students who memorize Al-Qur'an face challenges maintaining their psychological well-being while memorizing Al-Qur'an and attending school activities. This study aims to determine the relationship between religiosity and social support with psychological well-being in high school students who memorize the Qur'an. The research subjects were 103 students (mean age 16.41) who were in the process of memorizing 30 chapters of the Qur’an at SMA IT Abu Bakar and SMA IT Baitussalam Yogyakarta. The sampling technique used was convenience sampling. Data collection was carried out using three scales: psychological well-being scale (α=0.904), religiosity scale (α=0.892), and social support scale (α=0.092), all of which were modified. The multiple regression data analysis revealed a significant relationship between religiosity and social support with the psychological well-being of high school students who memorize the Qur'an. The simultaneous effective contribution of two independent variables to psychological well-being is 52.6%. The partial contribution of religiosity is 26.9%, and the partial contribution of social support is 25.7%. These results can be a baseline for schools to develop support for memorizing the Qur'an in terms of facilities, training, and mentoring to increase students' religiosity and psychological well-being.

Determinan Kemiskinan: Studi Kasus 10 Kota/Kabupaten di Provinsi Nusa Tenggara Barat Periode 2017-2022

Poverty is a condition when a person cannot fulfill their basic needs or live a decent life. Poverty basically arises due to many factors such as difficulty finding work, limited capital, low quality of education and other factors. This research aims to study how the GRDP rate, unemployment rate, and human development index affect the poverty rate of 10 cities/districts in West Nusa Tenggara in the period 2017-2022. Secondary data is used in this technique and uses panel data regression to analyze the data. The model selection test results show that the Fixed Effect Model is the best. According to the partial significance test results, the human development index affects the poverty rate at alpha α (0.05). The coefficient of determination (R2) is 0.994, which means that the simultaneous contribution of the independent variable to the dependent variable is 99.4 percent. Other additional variables not included in the model affect the remaining part.

Control of the Composition and Morphology of Non-Metallic Inclusions in Superduplex Stainless Steel

Duplex stainless steel is a unique material for cast products, the use of which is possible in various fields. With the same chemical composition, melting, casting and heat treatment technology, pitting and crevice corrosion were observed at the interphase boundaries of non-metallic inclusions and the steel matrix. To increase the cleanliness of steel, it is necessary to carefully select the technology for deoxidizing with titanium or aluminum, as the most common deoxidizers, and the technology for modifying with rare earth metals. In this work, a comprehensive analysis of the thermodynamic data in the literature on the behavior of oxides and sulfides in this highly alloyed system under consideration was performed. Based on this analysis, a thermodynamic model was developed to describe their behavior in liquid and solidified duplex stainless steels. The critical concentrations at which the existence of certain phases is possible during the deoxidation of DSS with titanium, aluminum and modification by rare earth metals, including the simultaneous contribution of lanthanum and cerium, was determined. Experimental ingots were produced, the cleanliness of experimental steels was assessed, and the key metric parameters of non-metallic inclusions were described. In steels deoxidized using titanium, clusters of inclusions with a diameter of 84 microns with a volume fraction of 0.066% were formed, the volume fraction of which was decreased to 0.01% with the subsequent addition of aluminum. The clusters completely disappeared when REMs were added. The reason for this behavior of inclusions was interpreted using thermodynamic modeling and explained by the difference in temperature at which specific types of NMIs begin to form. A comparison of experimental and calculated results showed that the proposed model adequately describes the process of formation of non-metallic inclusions in the steel under consideration and can be used for the development of industrial technology.