bluuebunny/crossref_metadata_2025 huggingface dataset:
Ultra Supercritical Steamside Oxidation
Authors: Holcomb G.R. , Cramer S.D. , Covino B.S. , Bullard S.J. , Ziomek-Moroz M.
Published: July 2024

Ultra supercritical (USC) power plants offer the promise of higher efficiencies and lower emissions, which are goals of the U.S. Department of Energy’s Advanced Power Systems Initiatives. Most current coal power plants in the U.S. operate at a maximum steam temperature of 538°C. However, new supercritical plants worldwide are being brought into service with steam temperatures of up to 620°C. Current Advanced Power Systems goals include coal generation at 60% efficiency, which require steam temperatures of up to 760°C. This research examines the steamside oxidation of advanced alloys for use in USC systems, with emphasis placed on alloys for high- and intermediate-pressure turbine sections. Initial results of this research are presented.
High-Temperature Oxidation Behavior of X20 CrMoV 12.1 Boiler Tube Material
Authors: Jung J.S. , Kim D.S. , Kim B.S. , Kim E.H. , Lee S.H.
Published: July 2024

The oxidation behavior of X20 steel in steam environments was studied isothermally between 580-640°C. Initially, the magnetite (Fe3O4) phase formed on the surface. With increasing time and temperature, the hematite (Fe2O3) phase formed. The oxide scale consisted of an inner layer divided from an outer layer by the original metal surface. A Cr-rich area was observed beneath the original metal surface. Oxide scales formed on a serviced boiler tube at 540°C for 7000h were also analyzed and found to be similar in oxide phase composition to those formed on X20 steel under laboratory conditions. However, differences existed in the microstructure and distribution of the Cr-rich area within the oxide scale. It was concluded that the oxidation mechanism under field conditions differs from that under laboratory conditions.
Experiences in Manufacturing and Long-Term Mechanical and Microstructural Testing of 9-12% Chromium Steel Forgings for Power Generation Plants
Authors: Zeiler Günter , Meyer Wilfried , Spiradek Krystyna , Wosik Jaroslaw
Published: July 2024

Within the pursuit of improved economic electricity production with reduced environmental pollution, the European research activities COST 501/522 aimed to develop advanced 9-12%Cr steels for highly stressed turbine components by increasing thermal efficiency through higher steam temperatures up to 600/625°C. One such modified Cr steel, a tungsten-alloyed 10%Cr steel, has been in industrial production for several years in steam and gas turbine applications. This paper firstly discusses experiences in manufacturing, non-destructive testing, and mechanical properties achieved in forgings of this COST grade E steel. Secondly, it reports on the manufacturing of a trial melt of a later 9%Cr steel containing cobalt and boron from COST development, describing its long-term creep behavior, microstructural features responsible for superior creep resistance, and test results including short-term properties, detectable flaw size, and initial creep results for a full-size trial rotor forging.
Review of Turbine Materials for use in Ultra-Supercritical Steam Cycles
Authors: Ellis Fred V. , Wright Ian G. , Maziasz Philip J.
Published: July 2024

A study is being conducted on turbine materials for use in ultra-supercritical (USC) steam power plants, with the objective of ensuring no material-related impediments regarding maximum temperature capabilities and the ability to manufacture turbine components. A review of the state-of-the-art and material needs for bolting and casing applications in USC steam turbines was performed to define and prioritize requirements for the next-generation USC turbines. For bolting, several potentially viable nickel-base superalloys were identified for service at 760°C, with the major issues being final material selection and characterization. Factors limiting inner casing material capabilities include casting size/shape, ability to inspect for discontinuities, stress rupture strength, and weldability for fabrication and repairs. Given the need for precipitation-strengthened nickel-base alloys for the inner casing at 760°C, the material needs are two-fold: selection/fabrication-related and characterization. The paper provides background on turbine components and reviews the findings for bolting and casing materials.
Defining the Materials Issues and Research needs for Ultra-Supercritical Steam Turbines
Authors: Maziasz Philip J. , Wright Ian G. , Shingledecker John P. , Gibbons Thomas B. , Romanosky Robert R.
Published: July 2024

Current state-of-the-art coal-fired supercritical steam power plants operate with high-pressure turbine inlet steam temperatures close to 600°C. The best of the recently developed and commercialized advanced 9-12Cr martensitic-ferritic steels may allow prolonged use at temperatures to about 620°C, but such steels are probably close to their inherent upper temperature limit. Further increase in the temperature capability of advanced steam turbines will certainly require the use of Ni-based superalloys and system redesign, as seen in the European programs that are pioneering advanced power plants capable of operating with 700°C steam. The U.S. Department of Energy (DOE) has recently undertaken a concerted effort to qualify ultra-supercritical boiler tubing and piping alloys for 720/760°C steam for increased efficiency and reduced emissions. It is, therefore, necessary to develop the corresponding USC steam turbine, also capable of reliable operation at such conditions. This paper summarizes a preliminary assessment made by the Oak Ridge National Laboratory (ORNL) and the National Energy Technology Laboratory (NETL) of materials needed for ultra-supercritical (USC) steam turbines, balancing both technical and business considerations. These efforts have addressed an expanded portfolio of alloys, that includes austenitic stainless steels and alloys, in addition to various Ni-based superalloys for critical turbine components. Preliminary input from utilities indicates that cost-effective improvements in performance and efficiency that do not sacrifice durability and reliability are prime considerations for any advanced steam turbine technology.
Why it is Possible to Reveal, Recognize, and Assess Creep Stage in Operating High Energy Piping by Quantitative Acoustic Emission Method
Authors: Finkel V. , Lezvinsky L. , Muravin G. , Muravin B.
Published: July 2024

Theoretical and experimental investigations, including fracture tests, acoustic emission (AE) studies, fractography, micro-sclerometric analyses, and spectral/chemical analyses of specimens, have established the possibility of revealing, recognizing in-service acquired, age-related, and prefabricated flaws based solely on AE data. Results show a linear dependence between AE and mechanical deformation power of steel specimens in original and creep stage 3a-3b conditions, decreasing fracture load and J1c value for aging steel, creep processes at stage 3a-3b having J-integral value below 0.05J1c, possibility of assessing and distinguishing different flaw development stages with ≥87% accuracy, revealing zones of tough and brittle fracture, and recognizing inclusions/pre-fabricated flaws and assessing individual/interacting flaws. Experiments confirmed the absence of the Kaiser effect under repeated loading of flawed specimens and demonstrated using AE for defect revelation. Analysis showed that creep-associated AE is mainly continuous, with repeated loading decreasing burst AE contribution during plastic deformation development.
Microstructure Characterization of Advanced Boiler Materials for Ultra Supercritical Coal Power Plants
Authors: Wu Quanyan , Shingledecker John P. , Swindeman Robert W. , Vasudevan Vijay K.
Published: July 2024

The goal of improving the efficiency of pulverized coal power plants has been pursued for decades. The need for greater efficiency and reduced environmental impact is pushing utilities to ultra supercritical conditions (USC), i.e. steam conditions of 760°C and 35 MPa. The long-term creep strength and environmental resistance requirements imposed by these conditions are clearly beyond the capacity of the currently used ferritic steels and other related alloys. Consequently, new materials based on austenitic stainless steels and nickel-base superalloys are being evaluated as candidate materials for these applications. In the present work, the nickel-base superalloys CCA617, Haynes 230 and Inconel 740, and an austenitic stainless steel Super З04H, were evaluated. The materials were aged for different lengths of time at temperatures relevant to USC applications and the corresponding microstructural changes were characterized by x-ray diffraction, optical, scanning and transmission electron microscopy, with particular attention being given to the structure, morphology and compositions of phases (including γ, γ’, carbides, ordered phases, etc.) and the nature, density and distribution of dislocations and other defects. The results are presented and discussed in light of accompanying changes in microhardness.
Electrochemical Corrosion Rate Probes for High-Temperature Energy Applications
Authors: Covino B.S. , Bullard S.J. , Cramer S.D. , Holcomb G.R. , Ziomek-Moroz M. , Eden D.A. , Cayard M.S.
Published: July 2024

High-temperature corrosion occurs in different sections of energy production plants due to a number of factors: ash deposition, coal impurities, thermal gradients, and low NOx conditions, among others. High-temperature electrochemical corrosion rate (ECR) probes are rarely used at the present time, but if they were more fully understood, corrosion could become a process variable at the control of plant operators. Research is being conducted to understand the effects of probe composition, ash composition, environment chemistry, and measurement technique on the accuracy, response, and longevity of electrochemical corrosion rate probes. The primary goal is to understand when ECR probes accurately measure corrosion rates and when they are simply qualitative indicators of changes in the corrosion processes. Research to date has shown that ECR probe corrosion rates and corrosion rates from mass loss coupons agree within a factor of 2. This good agreement was found to depend on the composition of the sensors, with the best results coming from more highly alloyed materials such as 316L stainless steel and poorer results from carbon steel sensors. Factors being considered to help explain the good or poor agreement between mass loss and ECR probe corrosion rates are: values selected for the Stern-Geary constant, the effect of internal corrosion, and the presence of conductive corrosion scales and ash deposits.
Applicability of Ni-Based Welding Consumables for Boiler Tubes and Pipings in the Temperature Range up to 720°C
Authors: Heinemann J. , Helmrich A. , Husemann R.-U. , Maile K. , Klenk A.
Published: July 2024

Investigations on welded joints made from a modified parent material and welding consumables are described. Tubes and pipes with typical dimensions have been welded using different welding processes and consumables (GTAW, SAW, SMAW, modified filler metals). The influence of melting loss and chemical composition of the consumables on the weld performance was studied. Short-term tensile and long-term creep tests on cross weld specimens were carried out in order to evaluate strength. The results obtained so far show that the properties of the welded joints are rather optimistic, it could be assumed that the modified Alloy 617 and the welding consumables used will meet the requirements for use in a plant operated at ultra critical steam conditions with live steam temperatures up to 720°C and pressure up to 300 bar. This allows for first practical applications in test loops of plants. These applications including the Welding Procedure Qualifications are described.
P91 Pipe Welding Breakthrough
Authors: Patrick C. W. , Ferguson T. E.
Published: July 2024

A major cost contributor of P91 pipe welding is the vital requirement of ensuring proper protection of the root or first pass of the weld from oxidation through the use of an inert gas blanket, i.e. backing gas. The necessity for oxidation protection negatively impacts the cost of both weld set-up and the actual welding process of P91 pipe fabrication. In an effort to decrease the associated costs of welding P91, Fluor Corporation has invested in significant research and extensive field-testing to develop the wire/gas mixture that contributes to the breakthrough in welding P91 with “No Backing Gas (NBG)”. Combining this novel technique with the semiautomatic GMAW-S (using inverter technology with a controlled transfer) eliminates all cost associated with the need to provide a backing gas, including installation of purge dams, backing gas, and man-hours associated with implementing these activities.
Suppression of Type IV Failure in High-B Low-N 9Cr-3W-3Co-NbV Steel Welded Joint
Authors: Kondo M. , Tabuchi M. , Tsukamoto S. , Yin F. , Abe F.
Published: July 2024

This study investigated the creep rupture strength and microstructure evolution in welded joints of high-boron, low-nitrogen 9Cr steels developed by NIMS. The welds were fabricated using the GTAW process and Inconel-type filler metal on steel plates with varying boron content (47-180 ppm). Creep rupture tests were conducted at 923K for up to 10,000 hours. Despite their higher boron content, these steels exhibited good weldability. Welded joints of the boron steel displayed superior creep properties compared to conventional high-chromium ferritic steel welds like P92 and P122. Notably, no Type IV failures were observed during creep testing. Welding introduced a large-grained microstructure in the heat-affected zone (HAZ) heated to the austenite transformation temperature (Ac3 HAZ). This contrasts with the grain refinement observed in the same region of conventional heat-resistant steel welds. Interestingly, the grain size in this large microstructure was nearly identical to that of the base metal. Analysis of the simulated Ac3 HAZ revealed crystal orientation distributions almost identical to those of the original specimen. This suggests a regeneration of the original austenite structure during the alpha-to-gamma phase transformation. Simulated Ac3 HAZ structures of the boron steel achieved creep life nearly equivalent to the base metal. The suppression of Type IV failure and improved creep resistance in welded joints of the boron steels are likely attributed to the large-grained HAZ microstructures and stabilization of M23C6 precipitates. The optimal boron content for achieving the best creep resistance in welded joints appears to lie between 90 and 130 ppm, combined with minimized nitrogen content.
Microstructural Modelling for Creep Strength Prediction in Ferritic Steels
Authors: Faulkner Roy G. , Yin You Fa
Published: July 2024

New Monte Carlo models have recently been developed to predict microstructural evolution in steels and aluminum alloys during heat treatment and high-temperature service. These models can control precipitate type and size distribution, distinguishing between pure lattice and grain boundaries. Consequently, they can forecast the precipitate size distribution within grains and on grain boundaries as a function of time. This paper describes the model validation for ferritic Fe-9Cr P92 steels. The model provides new information over a range of time intervals adding up to the total plant lifetime in an ultra-supercritical plant. This information can be incorporated into continuum damage mechanics models for predicting creep rate and stress rupture life. The paper discusses how this technique is used as a materials development tool to forecast necessary compositional modifications for improving creep properties in ferritic steels.
Optimization of Cr Content for Long-Term Creep Strength in High Cr Heat Resistant Steel
Authors: Miki Kazuhiro , Azuma Tsukasa , Tanaka Yasuhiko , Ishiguro Toru , Hashizume Ryokichi , Murata Yoshinori , Morinaga Masahiko
Published: July 2024

The effect of Cr content on the creep strength at 650°C was examined with high Cr heat resistant steels for the USC high-temperature rotor shafts. The amount of Cr was varied from 8.5% to 11.5%, and then, the alloying effect of Cr was investigated on the stability of the precipitates at 650°C. Within the present range of the Cr content, the short-term creep rupture life under the higher applied stress increased with the Cr content in the steels, whereas the long-term creep rupture life under the lower applied stress decreased with the Cr content in the steels. For example, under the applied stress of 98MPa, the 9%Cr steel exhibited the longest creep rupture life among the experimental steels. Also, it was found from the experiment using the extracted residues that the degree of solution strengthening and the sorts of precipitates scarcely changed regardless of the Cr content in the steels. The Laves phase precipitated finely in the lath was enlarged in the 11.5%Cr steel even after a short-term creep. This result indicates that the coarsening of precipitates such as the Laves phase promotes the recovery of the lath in the early stage of creep deformation. It was suggested that 9%Cr is desirable content in the ferritic steel for suppressing the degradation of creep strength in 98MPa at 650°C.
Improvement in Creep Strength and Impact Toughness of High Cr Heat Resistant Steel based on Ferrite Matrix
Authors: Toda Y. , Kushima H. , Abe F. , Kimura K.
Published: July 2024

Effects of Ni content and heat treatment condition on impact toughness and creep strength of precipitation strengthened 15Cr ferritic steels were investigated in order to discuss a possibility of improvement in both mechanical properties. Both creep strength and impact toughness of the developing steels were improved drastically by solid solution treatment with water quenching. However, an addition of Ni reduced the long-term creep strength of the steels, though Ni was effective in improvement in impact toughness. It was found that water quenching suppressed formation of coarse block type particles and precipitate free zones around them, and precipitation of plate type fine particles and thermal stability of them within ferrite phase were promoted by solid solution treatment with water quenching. However, martensite phase with sparsely distributed coarse block type particles were formed in the Ni added steels, and such microstructure reduced the precipitation strengthening effect slightly. On the other hand, increase in impact values of the steel indicated no relation to volume fraction of martensite phase. It was supposed that the impact toughness of ferrite phase itself was improved by solid solution treatment and addition of Ni.
High-Temperature Low Cycle Fatigue and Creep-Fatigue Behavior of a Modified 9Cr-1Mo Ferritic Steel
Authors: Nagesha A. , Valsan M. , Srinivasan V.S. , Bhanu Sankara Rao K. , Mannan S.L.
Published: July 2024

This paper explores the low cycle fatigue (LCF) and creep-fatigue properties of a hot-forged, normalized, and tempered 9Cr-1Mo ferritic steel. This steel offers good performance in high-temperature applications (up to 873K) in power plants and reactors. The steel was forged into 70 mm diameter rods and then heat-treated with normalizing (1313K for 1 hour, air cooling) and tempering (1033K for 1 hour, air cooling). LCF tests were conducted at 300-873K with varying strain amplitudes and strain rates to understand the influence of both factors. Additionally, some specimens were aged at different temperatures for 10,000 hours before testing. Finally, creep-fatigue interaction tests were performed at 823K and 873K using tensile hold times ranging from 1 to 30 minutes.
Improvement of Creep Strength of Heat-Resistant Martensitic/Ferritic 12%Cr Steels
Authors: Knezevic V. , Sauthoff G.
Published: July 2024

This study explores methods to enhance the creep strength of 12%Cr martensitic/ferritic steels. The approach focuses on utilizing various precipitates to hinder microstructure coarsening and dislocation movement. A combination of Laves phase (slow precipitation) and MX carbonitrides (dislocation pinning) is used for sustained strengthening. Different MX-forming elements (V, Ta, Ti) are investigated to identify the optimal combination for high quantities of finely distributed strengthening particles. Additionally, cobalt and copper are employed to promote a fully martensitic microstructure and potentially slow down diffusion or provide nucleation sites for Laves phase precipitation. Long-term creep tests confirm the effectiveness of Laves phase precipitation, particularly with tungsten present. Tantalum's influence on both MX precipitation and the Laves phase is also observed. Combining multiple MX-forming elements (V/Ta, V/Ti, Ta/Ti) further improves creep strength, supported by predictions of high MX carbonitride formation from Thermo-Calc calculations. Partially replacing cobalt with copper (1%) also demonstrates positive effects on creep properties.
Coarse Size BN Type Inclusions formed in Boron Bearing High Cr Ferritic Heat Resistant Steel
Authors: Sakuraya K. , Okada H. , Abe F.
Published: July 2024

This study investigates the behavior of boron nitride (BN) inclusions in high-chromium ferritic heat-resistant steels like P92 and P122. Boron is added to improve creep resistance, but its role is not fully understood. Here, the formation and dissolution of BN inclusions during high-temperature heat treatment were examined. Microscopic analysis revealed coarse BN inclusions (2-5 μm) alongside smaller alumina inclusions. Annealing experiments showed that these BN inclusions only dissolved at temperatures exceeding 1200°C, suggesting they form during casting or forging processes below 1150°C. Chemical analysis identified a critical boron and nitrogen concentration threshold (below 0.001% B and 0.015% N) for BN inclusion formation.
Escrita colaborativa e ensino
Authors: Ruiz Eliana Maria Severino Donaio , Guerra Junior Antonio Lemes , Barbeta Claudia de Faria , Grande Paula Baracat De
Published: July 2024

Seguindo o propósito de entender como a escrita colaborativa vem sendo compreendida e estudada no meio acadêmico nacional contemporâneo, este trabalho traz um excerto de um mapeamento de publicações sobre o tema nos portais da Capes, entre os anos de 2019 e 2023. O recorte temporal se definiu em função da publicação da BNCC e da instituição da pandemia de Covid-19, eventos significativos que impactaram as práticas de ensino e aprendizagem da língua portuguesa em contexto brasileiro. Por se tratar de uma metapesquisa de natureza bibliográfica, o percurso metodológico esteve centrado na definição de termos de busca e de critérios para a seleção de trabalhos representativos das categorias analíticas criadas. Em vista da diversidade de perspectivas teórico-metodológicas em que o tratamento da escrita colaborativa é ancorado, tanto nas produções investigadas quanto nos trabalhos anteriores com os quais dialogam, os dados foram categorizados em três grandes eixos temáticos. As análises aqui apresentadas incidem, pois, sobre artigos, dissertações e teses ilustrativos da abordagem acadêmica da escrita colaborativa em termos dos seguintes aspectos: processos de desenvolvimento, recursos para realização e aplicações práticas. Os resultados alcançados pelo mapeamento destacam tendências nas pesquisas sobre escrita colaborativa, voltadas sobretudo para a discussão desses aspectos e impulsionadas pelo uso de tecnologias digitais no ensino de língua portuguesa.
The role of the methodological service in improving the professionalism of teachers of secondary vocational education
Authors: Pechalova Larisa Viktorovna , Pechalov Anastas Konstantinovich , Belousova Larisa Vladimirovna
Published: July 2024

The chapter discusses the current problems of formation and continuous development of the methodological culture of teachers of secondary vocational education, improving their methodological competence, the use of the latest effective educational technologies and teaching methods. The experience of the methodological service of the Stavropol Construction College (GBPOU SST) is presented, its role in the development of professional competence of teachers as direct participants in the process of forming an educational, methodological, research and practical training base for students of secondary vocational education is shown by examples.
Pengaruh Coping Mechanism Terhadap Psychological Well-Being Pada Mahasiswa
Authors: Sesarelia Audy Najwa , Arsyad Muhammad , Putro Hendro Yulius Suryo
Published: July 2024

The situation in university raises several problems for students and tends to make it difficult for them to adapt, thus hindering their development as individuals. The more problems there are, the lower the level of students' psychological well-being. This encourages students to carry out strategies to overcome problems, which are called coping mechanisms. This research aims to find out how much influence coping mechanisms have on the psychological well-being of the 2021 class of FKIP ULM students. The research approach uses a quantitative approach with a type of expost-facto research. Data collection tools were the Coping Mechanism Scales questionnaire and Ryff's Scales of Psychological Well-Being. Sampling used simple random sampling with the research sample, namely 310 students from the 2021 class of FKIP ULM. Data analysis techniques use descriptive statistics and simple linear regression. The research results show that students' coping mechanisms are classified as high and students' psychological well-being is classified as moderate. From simple linear regression calculations, the R Square result was 43.8%, which is classified as moderate (sig = 0.001). The influence of coping mechanisms on psychological well-being is very significant, so that the level of psychological well-being of students can be seen from how coping strategies are carried out, because coping mechanisms are said to be quite influential predictors.___________________________________________________________________Situasi di perguruan tinggi memunculkan beberapa masalah pada mahasiswa dan cenderung membuat mereka kesulitan dalam menyesuaikan diri, sehingga menghambat pengembangan diri sebagai pribadi. Semakin banyak masalah, maka semakin menurun pula tingkat kesejahteraan psikologis mahasiswa. Hal tersebut mendorong mahasiswa untuk melakukan strategi dalam mengatasi permasalahan, yang disebut dengan coping mechanism. Penelitian ini bertujuan untuk mencari tahu seberapa besar pengaruh coping mechanism terhadap psychological well-being pada mahasiswa angkatan 2021 FKIP ULM. Pendekatan penelitian menggunakan pendekatan kuantitatif dengan jenis penelitian expost-facto. Alat pengumpulan data adalah angket Coping Mechanism Scales dan Ryff’s Scales of Psychological Well-Being. Penarikan sampel menggunakan simple random sampling dengan sampel penelitian yaitu mahasiswa angkatan 2021 FKIP ULM sebanyak 310 orang. Teknik analisis data menggunakan statistik deskriptif dan regresi linear sederhana. Hasil penelitian menunjukkan bahwa coping mechanism mahasiswa tergolong tinggi dan psychological well-being mahasiswa tergolong sedang. Dari perhitungan regresi linear sederhana didapatkan hasil R Square sebesar 43,8% yang tergolong sedang (sig = 0,001). Pengaruh coping mechanism terhadap psychological well-being sangat signifikan, sehingga tingkat psychological well-being mahasiswa dapat dilihat dari bagaimana strategi coping yang dilakukan, karena coping mechanism disebut sebagai prediktor yang cukup berpengaruh.
Studi Kasus Penggunaan Art therapy bagi Peserta Didik dengan Kesulitan Mengendalikan Emosi
Authors: Putri Amallia , Halida Halida
Published: July 2024

In general, this study aims to help counselees control negative emotions that can harm themselves and their environment. Emotional stability in adolescents is a valuable achievement in this phase. The provision of counseling guidance services can help students who experience inability to control their emotions in a better direction. The specific target to be achieved in this study is to explore more deeply how individual counseling services work using art therapy techniques. With this, it can be known what causes, impacts and efforts can be given to train and control negative emotions in a positive direction so that they can be accepted in the environment. The form of research is a case study with descriptive methods. The data collection techniques used are non-test techniques in the form of interviews, observation, and documentation. The results showed positive changes in students in the form of ability to overcome problems and reduced emotional outbursts that were seen analyzing each meeting. The suggestion for further research is to pay intensive attention in guiding and paying attention to the development of case subjects. ____________________________________________________________________Secara umum penelitian ini bertujuan untuk membantu konseli mengontrol emosi negatif yang dapat merugikan diri maupun lingkungannya. Kestabilan emosi pada remaja merupakan pencapaian berharga pada fase ini. Pemberian layanan bimbingan konseling dapat membantu peserta didik yang mengalami ketidakmampuan dalam mengontrol emosinya ke arah yang lebih baik. Target khusus yang ingin dicapai dalam penelitian ini adalah menggali lebih dalam cara kerja layanan konseling individu menggunakan teknik art therapy. Dengan ini dapat diketahui apa penyebab, dampak serta upaya yang bisa diberikan untuk melatih dan mengontrol emosi negatif ke arah positif agar dapat diterima di lingkunagn. Bentuk penelitian ialah studi kasus dengan metode deskriptif. Teknik pengumpulan data yang digunakan yakni teknik non tes berupa wawancara, observasi, dan dokumentasi. Hasil penelitian menunjukkan perubahan positif pada peserta didik berupa kemampuan mengatasi masalah dan berkurangnya luapan emosi yang terlihat analisa setiap pertemuan. Adapun saran untuk penelitian selanjutnya adalah memberikan perhatian yang intensif dalam membimbing dan memperhatikan perkembangan subjek kasus.
Methodological principles of searching for disposal sites of radioactively contaminated materials by geophysical methods
Authors: Vyzhva S.A. ,   Taras Shevchenko National University of Kiev, Onishchuk V.I. , Onishchuk I.I. , Madisheva R.K. , Mukhazhanova Zh.T. ,   Taras Shevchenko National University of Kiev,   Taras Shevchenko National University of Kiev,   Abylkas Saginov Karaganda Technical University,   Abylkas Saginov Karaganda Technical University
Published: July 2024

This article is devoted to radiometric studies at one of the sites of the Chornobyl nuclear power plant (the “Sandy Plateau” site), which is located on the south-eastern outskirts of the city of Pripyat. Radioactive substances, both artificial and natural, resulting from incidents and disasters at nuclear facilities pose the greatest danger. The disposal sites for radioactively contaminated materials considered in this work are sources of groundwater pollution. Currently, there is a problem of searching for their location for reburial in specialized stationary burial grounds, to solve which detailed complex geophysical studies are used. Various geophysical methods are considered, including micro-sensing and radiometric studies, to determine the location of burials. Particular attention is paid to the analysis and interpretation of geophysical data, as well as the economic and practical aspects of the application of these methods. As a result of the study, it was established: that when searching and studying burial sites of radioactively contaminated materials, the use of surface gamma photography makes it possible to assess the level of radioactive contamination of the upper layers of the soil (to a depth of 0.8-1 m). However, if the thickness of buried radioactively contaminated materials exceeds a certain level, which leads to weak contamination of rocks at a depth of more than 1-1.5 m, then burial objects may go undetected when using only gamma-ray imaging. In such cases, microgamma probing becomes an effective method. Increased values of exposure dose rate and the nature of microgamma sounding curves serve as indicators of the presence (increase in exposure dose rate with depth) or absence (sharp decrease in exposure dose rate with depth) of radioactively contaminated materials in the studied area.
Muslim Geography at the End of Dictatorship of Liberal Paradigm: Time to Reflect Upon Own Fate
Authors: Mulaosmanovic Admir
Published: July 2024

The goal of writing this article is to provoke different thoughts about the ways of building the world in which we live. For the past few years, I have already shared some of the ideas that I develop here by writing it down in opinions and speaking at symposia, but I did not clearly relate the need for a change in the Muslim world, which begins with creating an equidistance towards the Eastern and Western powers like I am doing in this text. I would like to point out that the multitude of common interests of the countries of the Fertile Crescent should determine the concept of their regional cooperation as well as cooperation with others based on their respect for that very concept. It simply means that article deals positively with emergence of multipolarity advocating in the same time for centralized regional cooperation in Middle East and Nort Africa - for the beginning. As we witness the end of the hegemony of liberalism as a global enterprise, there is a need for a different kind of hegemony in areas that are integral parts of Muslim geography.
Sosyal Değişim, Tarihsellik ve Nesh Bağlamında Şeriat, Prof. Dr. Talip Özdeş, Fecr Yayınları, Ankara 2023, 110 s.
Authors: Deri Mehmet
Published: July 2024

The number of qualified academic studies on what Sharīʿa is and its relationship with "social change", "historicity" and "naskh" has been increasing in recent years. In this context, the discussions and writings on social change, Qur'an, Sunnah, Sharīʿa, historicity and naskh on the axis of Westernism and Islam continue to form part of the agenda. One of these works is Prof. Dr. Talip Özdeş's "Sharīʿa in the Context of Social Change, Historicity and Naskh". With this study, it is aimed to eliminate the confusion around the concept of "Sharīʿa", to contribute to social reconciliation by eliminating the grounds for abuse, and the subject has been handled and processed with a purely supra-political scientific approach. This study first focuses on the issues of social change, historicity and naskh with an analytical approach in order to understand the concept of "sharīʿa" correctly and to place it on its center. Then, based on the same ground, the concept of "sharīʿa" is focused on.
The concept in question has been examined lexically and semantically, and information and evaluations have been made on what it expresses in the Qur'an and its dimensions based on the integrity of the Qur'an. Again, the meaning relationship of the concept of "sharia" with the concepts of "shir'at" and "shar'î" from the same root has been emphasized, information and evaluations have been made. In this study, which has been prepared with a rich literature by using the basic sources in the field, the subjects have been handled in a concise manner and examined in various aspects from an academic and scientific perspective.
ANALISIS PERBANDINGAN PENDAPATAN ANTARA PEMBAYARAN LISTRIK PASCA BAYAR DAN PRA BAYAR PADA PT. PLN (PERSERO) SULSELRABAR UP3 PAREPARE
Authors: HERLIYANA
Published: July 2024

This study aims to determine the ratio of income between postpaid and prepaid electricity payments and to find out how the postpaid and prepaid electricity payment system at PT. PLN (Persero) Sulselrabar UP3 Parepare. The data collection techniques used in this study are, observation, interviews and documentation. The data analysis technique used in this study uses qualitative descriptive analysis to explain the postpaid and prepaid electricity payment systems, quantitative analysis techniques and comparative analysis to calculate the percentage of postpaid and prepaid income and compare income between postpaid and prepaid electricity payments. After going through the analysis process, the results show that postpaid income from 2013 - 2017 obtained a total percentage of income of 440.15% of the total number of customers of 126,641 while pre-paid from 2013 - 2017 obtained an income percentage of 59.91% of the total customer 54,626. For the postpaid electricity payment system, it can be done in two ways, namely through PPOB such as ATMs and through direct payments at the electricity payment counter that has been provided by PT. PLN (Persero) UP3 Parepare, while for prepaid electricity the payment system customers can purchase vouchers for charging electricity that can done at Alfamart, Indomaret and through the Banking mobile application.
ANALISIS PROSES MANAJEMEN RISIKO PERBANKAN DALAM MENGENDALIKAN RISIKO KREDIT (Studi Kasus pada PT Bank Rakyat Indonesia (Persero) Tbk Kantor Cabang Parepare)
Authors: Fatima
Published: July 2024

This study aims to determine the role of risk management in controlling credit risk. To apply these objectives, descriptive quantitative methods are used. Secondary data were processed using the Non-Performing Loan formula, while the in-depth data was extracted through interview techniques. Secondary data was collected in a time series for three years of observation, namely data for 2017, 2018, and 2019. The results showed that the role of banking risk management in controlling credit risk has not been maximally carried out even though in its implementation it is by the 5C measurement. This result is supported and proven by the number of bad loans which has increased for three consecutive years, namely in 2017, 2018, and 2019 with a total of 28.786.767.971, 32.650.807.563, 40.379.887.745
PENGARUH PEMBERIAN REWARD DAN PUNISHMENT TERHADAP KINERJA PEGAWAI DI PUSKESMAS LAKESSI KOTA PAREPARE
Authors: Musfirah
Published: July 2024

This study aims to examine the effect of reward and punishment on employee performance. The method used is quantitative causal. Data collection carried using a questionnaire instrument was given to the research sample of 80 respondents. The data analysis technique in this study used multiple linear regression analysis. Based on the that has already complete, it shows that: 1) Rewards have a positive and significant effect on employee performance. 2) Punishment does not affect or significantly affect the performance of employees. 3) Reward and Punishment have a positive and significant impact on employee performance.
ANALISIS COMMON SIZE UNTUK MENILAI KINERJA KEUANGAN SEBAGAI DASAR PENGAMBILAN KEPUTUSAN PADA PT.PELNI (PERSERO) CABANG PAREPARE
Authors: Mardiana
Published: July 2024

This study aims to assess the financial performance of PT Pelni (Persero) Cabang Parepare by using general measurement analysis as a basis for decision making. The research approach chosen is descriptive quantitative because the oncoming is appropriate with the objectives of this study. The data research was collected through observation, documentation, and interviews. The data used are secondary in the form of income statements and balance sheets. The results of this study indicate that the company's net profit from year to year fluctuates due to non-captive activities, namely loading and unloading. Unloading is referring to as labor costs and business service fees. The more costs incurred in loading and unloading, the less revenue is received. While a notice of the general balance sheet analysis for 2016 and 2017, debt increased due to operational costs or business costs and fixed activities that the company wanted to finance.
FAKTOR-FAKTOR YANG MEMENGARUHI KEPUTUSAN NASABAH DALAM MENABUNG DI BANK MANDIRI SYARIAH PAREPARE
Authors: Syahruni  , Nuryadin Rusmin
Published: July 2024

This study aims to determine what influences a customer's decision to save at Bank Mandiri Syariah Parepare. The data collected by distributing questionnaires to a study sample of 114 respondents. Data processing using statistical tools SPSS 21. The results provided that the product has a positive impact on customer decisions with a regression coefficient of 0.137. The promotion has a positive effect on customer decisions with a regression coefficient of 0.129. Then, service has a positive influence on customer decisions with a regression coefficient of 0.584. the location has a positive effect on customer decisions with a regression coefficient of 0.112.
FAKTOR-FAKTOR YANG MEMPENGARUHI MOTIVASI BERWIRAUSAHA MAHASISWA FAKULTAS EKONOMI DAN BISNIS UNIVERSITAS MUHAMMADIYAH PAREPARE
Authors: Suriana  , Hasdiana
Published: July 2024

The purpose of this thesis is to determine the factors that influence the entrepreneurial motivation of students of the Faculty of Economics and Business, University of Muhammadiyah Parepare. This research uses a descriptive method. This research is descriptive. This research method consists of research objects, namely students of the Faculty of Economics and Business, University of Muhammadiyah Parepare, starting from December to February 2020. The analytical technique used in this study is to explain the factors that influence the motivation of students of the Faculty of Economics and Business, the University of Muhammadiyah Parepare. in entrepreneurship. The results of the study state that many dominant factors influence the motivation of students of the Faculty of Economics and Business, the University of Muhammadiyah Parepare in building entrepreneurship.
PENGARUH BIAYA OPERASIONAL TERHADAP KINERJA KEUANGAN PADA PADA PT.PELNI (PERSERO) CABANG PAREPARE
Authors: Merlindayani  , Yusuf Syarifuddin
Published: July 2024

This study aims to determine the effect of operational costs on financial performance at PT. Pelni (Persero) Parepare Branch by using financial analysis techniques and simple linear regression analysis. The data collection techniques used in this study were observation, interviews, and documentation. The object of this research is the income statement and balance sheet. The data analysis carried out in this study was using quantitative methods. The results of this study using financial analysis techniques, namely ROA profitability, showed that the results of financial statements fluctuated from year to year and simple linear regression analysis techniques explained that operational costs had a significant effect on financial performance at PT.Pelni (Persero) Parepare Branch.
PENGARUH STANDAR AKUNTANSI PEMERINTAH SISTEM PENGENDALIAN INTERNAL TERHADAP KETEPATAN WAKTU PELAPORAN KEUANGAN PADA BADAN KEUANGAN DAERAH (BKUD) KABUPATEN PINRANG
Authors: Pratiwi Elsa , Jumriani
Published: July 2024

This study aims to determine the effect of the application of the government accounting system and internal control system on the timeliness of financial reporting at the Regional Finance Agency (BKUD) of Pinrang Regency. The data collection techniques used in this research are Observation, Questionnaire, and Measurement Scale. The sample in this study was 66 respondents. The data analysis technique in this study used multiple linear regression analysis. Based on the results of the research that has been done, it shows that: 1) Government Accounting Standards have a positive effect on the timeliness of financial reporting at the Regional Finance Agency (BKUD) of Pinrang Regency. 2) The Internal Control System has a positive effect on the timeliness of financial reporting at the Regional Finance Agency (BKUD) of Pinrang Regency. 3) Government accounting standards and internal control systems have a positive effect on the timeliness of financial reporting at the Regional Finance Agency (BKUD) of Pinrang Regency.
PENGARUH KEPUASAN KERJA TERHADAP PRODUKTIVITAS KERJA PADA PEGAWAI DI KANTOR DINAS PENDIDIKAN DAN KEBUDAYAAN BULUKUMBA
Authors: Jaya Ikhlazul Amal , Siti Hasbiah  , Ruma Zainal
Published: July 2024

This study aims to determine the effect of job satisfaction on the work productivity of the Bulukumba Education and Culture Office employees. The population in this study were employees of the Bulukumba Education and Culture Office as many as 45 respondents. The number of samples is 45 employees of the Education and Culture Office of Bulukumba. The data analysis technique that the writer uses in this research is descriptive quantitative. The data collection used is by using a questionnaire given to respondents. The data is processed using SPSS 21.0 for windows. Then, based on the results of the study showed that the variable job satisfaction had a positive and significant effect on the work productivity of the Bulukumba Education and Culture Office employees. which means that the perceived job satisfaction can increase the productivity of an employee at work.
PENGARUH ORGANIZATIONAL LEARNIG DAN TIM KERJA TERHADAP KINERJA PEGAWAI DINAS PEMADAM KEBAKARAN DAN PENYELAMATAN KOTA PAREPARE
Authors: Muh. Ikhsan  , Yusuf Syarifuddin , Firmansyah
Published: July 2024

The purpose of this study was to determine the effect of organizational learning and work teams on the employees performance of the Fire and Rescue Service in Parepare City. The data collection techniques in this study are observation and questionnaires. The research method used is descriptive quantitative method, while the number of samples used in this sample is 118 employees at the Fire and Rescue Service in Parepare City. The results of this study indicate that there is a positive and significant influence between Organizational Learning on the employees performance of the Fire and Rescue Service in Parepare City, there is a positive and significant influence between the Work Team on the employees performance of the Fire and Rescue Service in Parepare City. Thus the hypothesis is proven, as for the effect of the two organizational learning and work team variables are 65%, while the rest is in other variables that are not used in this study.
PENGARUH BUDAYA ORGANISASI TERHADAP KINERJA PEGAWAI PADA PT. HADJI KALLA CABANG BONE
Authors: ST. Rahmaniar  , Musa Chalid Imran , Haeruddin M. Ikhwan Maulana
Published: July 2024

This study aims to determine what the effect of organizational culture partially and simultaneously on employee performance. The type of research used is descriptive quantitative. The independent variable in this study is organizational culture while the dependent variable is employee performance. The population in this study were all employees in the office of PT. Hadji Kalla Cabang Bone, while the sample is 58 employees. Data collection was done by using a questionnaire. The data analysis technique used is simple regression analysis using SPSS Version 25 in 2022. The results of the study concluded that the independent variable, namely organizational culture (X) simultaneously or simultaneously affected employee performance (Y) positively and significantly.
PENGARUH PENGETAHUAN KEUANGAN, SIKAP KEUANGAN DAN KEPRIBADIAN TERHADAP PERILAKU MANAJEMEN KEUANGAN PADA PELAKU UMKM PETERNAKAN AYAM PETELUR KABUPATEN SIDRAP
Authors: Darmawan Darmawan , Muhtasar Sri Rezky Handayani , Ahmad Abduhrauf
Published: July 2024

Penelitian ini bertujan mengetahui apakah pengaruh pengetahuan keuangan, sikap keuangan dan kepribadian secara bersama-sama mempengaruhi perilaku manajemen keuangan pada pelaku UMKM peternakan ayam petelur Kab.Sidrap secara parsial. Populasi dalam penelitian ini sebanyak 746 UMKM Peternakan Ras Petelur, digunakan sebanyak 120 UMKM Peternakan Ras Petelur sebagai sampel pada penelitian ini. Data yang digunakan dalam penelitian ini berupa data primer. Teknik pengumpulan data dengan teknik survey dengan cara menyebar kuesioner. Metode analisis data yang digunakan adalah analisis linear berganda  yang diolah dengan menggunakan bantuan Software SPSS 26.
Hasil penelitian menunjukkan bahwa pengetahuan keuangan, sikap keuangan dan kepribadian berpengaruh terhadap perilaku manajemen keuangan pada pelaku UMKM Peternakan Ayam Petelur Kab. Sidrap. Hasil penelitian ini menunjukkan bahwa pengetahuan keuangan, sikap keuangan dan kepribadian berpengaruh secara parsial dan simultan terhadap perilaku manajemen keuangan pada pelaku UMKM Peternakan Ayam Petelur Kab. Sidrap