bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of Seismic-Geological Integration Anisotropy Modeling and PSDM Technology to Horizontal-Well Group Deployment in New Exploration Field
Authors: Bao Yi , Zhao Haibo , Wang Cheng , Wang Yangyang , Yan Feng , Zhang Zhiming , Guo Shuai , Li Xingyuan , Yao Shunyu
Published: February 2023

New exploration field of Shale-oil located on Songliao Basin in the northeast of China show good prospects has been found very strong anisotropy and varies greatly from location to another through laboratory measurement of drilled cores. But the thickness of high-quality target layer is less than 10m and average vertical depth is 2500m, conventional seismic migration results cannot support accurate geosteering of horizontal-wells. We adopted the result-driven integrated seismic and geological modeling concept to guide the following processing in order to eliminate the structural errors existing in the seismic processing results of Well-X1 and the trajectory calibration of horizontal wells, the fidelity velocity analysis technology based on the combined constraints of rockphysical analysis firstly, the anisotropic forward modeling results is used to obtain accurate isotropic velocity field, and then the "Well-control + Stratification + Fault-control" modeling technology is used to establish a high-precision velocity model. The depth errors of the seismic and geological model and the horizontal well trajectory are directly calibrated quantitatively in the depth domain after the PSDM (Prestack Depth Migration), and the anisotropic model is modified for iterative PSDM. Finally, the structural errors of the horizontal well trajectory and seismic profile in the correlation between the seismic results of the new method and the vertical well synthesis record increased from 79% to 91%. Then, the anisotropy model was updated by quantitative calibration with existing horizontal-well trajectory in the depth domain, so that the final VTI anisotropic PSDM results and the horizontal well construction error in the depth domain was less than 1‰. The anisotropic PSDM results provide accurate guidance for geosteering, and the posterior horizontal-well verifies the high accuracy of the method. The technology can effectively support the deployment of horizontal-well groups in new fields and the beneficial development and utilization of new types of reservoirs in Daqing oilfield, it also demonstrated that the seismic-geological integration anisotropy modeling and PSDM technology can provide reliable support for the deployment of horizontal-wells in the same type of deep, thin, anisotropic reservoirs.
Feasibility Study of Carbon Capture Utilization and Storage (CCUS) in the Gulf of Thailand: Phase I Storage Potential Identification
Authors: Henglai Puntira , Laochamroonvorapongse Rapheephan , Kovitkanit Naruttee , Kunpitaktakun Takonporn
Published: February 2023

With the determination towards sustainable growth, PTTEP has a commitment to achieve Net Zero Greenhouse Gas Emissions by 2050. Therefore, the Carbon Capture Utilization and Storage (CCUS) project in the Gulf of Thailand was initiated to evaluate the CO2 storage capacity in Bongkot and Arthit fields. Three categories of storage potential were considered including shallow aquifers and depleted gas reservoirs together with storage potential in oil rim reservoirs by using CO2 enhanced oil recovery (CO2-EOR) method.

The storage potential in shallow aquifer was targeted on porous rock located between seabed and top producing reservoirs which were identified in seismic and/or well data and reached by existing platforms. For the inventory of depleted gas reservoirs, the cumulative gas production volume was allocated to an individual reservoir, which signified storage size and injectivity of reservoir. The depleted gas reservoirs were focused on ones where a great amount of gas has been produced. For the CO2-EOR candidates, all oil rim reservoirs were reviewed and included in the study. The calculation of oil gain, CO2 injection requirement, and CO2 storage potential were based on the statistical data of Water-Alternating-CO2 fields.

The inventory of CO2 storage potential from three categories were compiled with the information of 1) platform name, 2) remaining reserves, 3) distance from processing platforms, and 4) CO2 storage volume. After considering the CO2 storage potential, two platforms were considered as the most suitable for two fields equipped with CO2 removal units. In addition, the CCS development study considered an option to improve CO2 removal performance of the membrane in order to recover more hydrocarbon from flared gas. After the preliminary technical evaluation, the detailed study with reservoir simulation will be conducted in order to ensure the injectivity at reservoir level, the optimization of injection well number, and the integrity of containment. The injection plan will be formulated, and the investment cost estimation of CCS project can be refined accordingly.

This CCUS study was initiated to reduce the CO2 emission from production fields under PTTEP. Currently, there are more than 20 CCUS projects around the world with only a few projects at the stage of CO2 injection. It requires good collaboration among subsurface and surface teams to increase confidence in storage suitability assessment. This project provides an example of multi-disciplinary integration and robust workflow starting from CO2 storage identification, volume calculation, to candidate ranking for further detail study.
Carbon Storage Leak Detection via Seismic FWI and RTM: Different Surveys Analysis
Authors: Amani Sajjad
Published: February 2023

Marine seismic data processing is investigated to monitor possible leakages from the geological Carbon storage. Due to the high importance of storage permanence, a precise leakage monitoring strategy is crucial. Advanced seismic monitoring solutions should be used for this goal. The proficiency of these solutions for monitoring a Carbon storage leakage can be affected by shallower layers due to their structures, seismic wave attenuation, and leak size. Knowing the difficulty of this problem, we investigate the two popular seismic monitoring methods on Seismic data for monitoring Carbon leaks in different scenarios: Full Waveform Inversion (FWI) and Reverse-Time Migration (RTM).

Finding the best survey strategy for monitoring carbon leaks is also significant. So, the results of different survey strategies, including vertical seismic profiling (VSP), cross-well, and surface, are compared to demonstrate the pros and cons of each strategy.

The synthetic marine seismic data is calculated for different models, including Carbon storage and its leak. We used a set of realistic physical values for sedimentary rocks that are common for such a media. An elastic finite-difference time-domain scheme is used for the simulations. We applied FWI and RTM methods for monitoring Carbon Leaks using the seismic data. The FWI results demonstrate a good detection of the leakage areas that were clearer in the VSP survey than the others. Also, the performance of the FWI method was checked for different sizes of Carbon leaks. The results show the high capability of FWI as a solution to this problem. Besides, the RTM results show the high potential of the z-component of seismic data outperformed in showing the borders of the CO2 leakage. This point is more visible in the VSP results than in others. On the other side, the x-component of seismic data in the RTM results shows that it can demonstrate lateral reflectors better.
Subsurface CCUS Monitoring & Surveillance: Insights on CO2 Resistivity Measurements
Authors: Al-Qasim Abdulaziz , Al-Tayyib Deena , Katterbauer Klemens
Published: February 2023

The topic of carbon dioxide (CO2) enhanced oil recovery (EOR) has received increased attention since five decades for two main applications:

Improvement of oil recovery in reservoirs, using miscible CO2 injection as tertiary oil recovery technique. Carbon dioxide can be injected into the reservoir using different injection strategies: injected by itself, simultaneously injected with water or as water-alternating-gas (WAG) mode. CO2 can be found in different phase states: liquid, gas or supercritical, depending on the reservoir conditions (pressure/temperature). CO2 sequestration (geologic storage) as a way to reduce CO2 emission. The realization of the CO2 sequestration into reservoir requires that long term stability of the reservoir seal is ensured.

It is considered that measuring electric resistivity is useful to monitor CO2 migration in the reservoir. Resistivity shows a high sensitivity to fluids saturation in reservoirs. Therefore, it is considered that deep electromagnetic technologies (e.g., crosswell EM) can also be useful as a surveillance method in case of CO2 injection. The variation of resistivity due to CO2 injection into a carbonate reservoir is not thoroughly studied, especially in a mixed salinity environment. Thus, the study presented in this paper provides a better understanding of the resisitivity responses in a mixed-salinity carbonate cores during drainange, imbibtion and CO2 injection processes, which may aid in CO2 montiroing.

The study addresses the following objectives:

Conduct the flooding tests on one carbonate core plug, varying the brine salinity. Conduct the CO2 injection at reservoir conditions. Measure resistivity of cores at different injection rates of CO2 into a carbonate plug, already partially saturated with brine and oil. Monitor a change in the overall resistivity of the rock while CO2 is being injected at different rates and also at a constant rate. Investigate the frequency effect on resistivity response while injecting fluids.
Subsurface CCUS Monitoring & Surveillance: Insights on CO2 Resistivity Measurements
Authors: Al-Qasim Abdulaziz , Al-Tayyib Deena , Katterbauer Klemens
Published: February 2023

The topic of carbon dioxide (CO2) enhanced oil recovery (EOR) has received increased attention since five decades for two main applications: Improvement of oil recovery in reservoirs, using miscible CO2 injection as tertiary oil recovery technique. Carbon dioxide can be injected into the reservoir using different injection strategies: injected by itself, simultaneously injected with water or as water-alternating-gas (WAG) mode. CO2 can be found in different phase states: liquid, gas or supercritical, depending on the reservoir conditions (pressure/temperature).CO2 sequestration (geologic storage) as a way to reduce CO2 emission. The realization of the CO2 sequestration into reservoir requires that long term stability of the reservoir seal is ensured.

It is considered that measuring electric resistivity is useful to monitor CO2 migration in the reservoir. Resistivity shows a high sensitivity to fluids saturation in reservoirs. Therefore, it is considered that deep electromagnetic technologies (e.g., crosswell EM) can also be useful as a surveillance method in case of CO2 injection. The variation of resistivity due to CO2 injection into a carbonate reservoir is not thoroughly studied, especially in a mixed salinity environment. Thus, the study presented in this paper provides a better understanding of the resisitivity responses in a mixed-salinity carbonate cores during drainange, imbibtion and CO2 injection processes, which may aid in CO2 montiroing.

The study addresses the following objectives: Conduct the flooding tests on one carbonate core plug, varying the brine salinity.Conduct the CO2 injection at reservoir conditions.Measure resistivity of cores at different injection rates of CO2 into a carbonate plug, already partially saturated with brine and oil.Monitor a change in the overall resistivity of the rock while CO2 is being injected at different rates and also at a constant rate.Investigate the frequency effect on resistivity response while injecting fluids.
Salinity Effect on the Interfacial Tension of CO2-Brine: Estimation and Investigation by Molecular Dynamics Simulations
Authors: Shiga Masashige , Sorai Masao
Published: February 2023

While there are numerous experimental data on CO2-brine interfacial tension (IFT), few studies on salinity effects over a wide range of concentrations have been reported. Thus, there is room for further research in understanding the mechanism of the IFT change. The objective of this study is to estimate the effect of salinity on CO2-brine IFT by molecular dynamics (MD) simulations and to gain a better understanding of the phenomenon through microscale insight.

IFT of CO2-brine was calculated for a wide range of salinity conditions from pure water to 5 mol/kg NaCl solution at temperatures and pressures from 298 to 473 K and 8 to 20 MPa. To calculate IFT, MD was performed by using the Nosé-Hoover thermostat and the Parrinello-Rahman barostat to keep temperatures and pressures constant.

The calculated results show an increasing trend against salinity, which is in good agreement with experimental data from previous studies. For example, the IFT under typical reservoir conditions of 313 K and 10 MPa were 30.0 mN/m for pure water, while 31.9, 34.2, 36.9, 39.4, and 42.6 mN/m for 1, 2, 3, 4, and 5 mol/kg NaCl solutions, respectively. The density distribution of ions in the aqueous phase near the interface and in the bulk region captured the negative adsorption of ions. This enables us to interpret the mechanism of the increase of IFT in light of the Gibbs adsorption isotherm.

IFT data calculated in this study is beneficial for estimating and modeling fluid behaviors of CO2-brine systems under a wide range of salinity conditions. In addition, atomic-scale insights would contribute to a better understanding of the interfacial phenomena regarding CO2-brine including high salinity regions.
Research and Practice of Steam Huff and Puff Depressurization and Increase Injection Volume Technology for the First Offshore Super Heavy Oil Reservoir in China
Authors: Wang Hongyu , Wang Qiuxia , Xiaodong Han , Hongwen Zhang , Liu Hao , Wang Cheng , Zhang Hua , Wang Zhiyuan , Dou Peng
Published: February 2023

The surface crude oil viscosity of the first ultra-heavy oil field in Bohai Oilfield is more than 50,00mpa·s, which is unable to be developed under the condition of original formation temperature and requires steam stimulation. In the first period of steam huff and puff well, due to sufficient formation energy, steam injection pressure is high in the process of steam injection. The measures to reduce the steam injection speed are mostly adopted in the field, but it will lead to the problem of large wellbore heat loss and affect the steam stimulation heat injection effect. In this paper, based on the oil characteristics of the first ultra-heavy oil field in Bohai Oilfield, the evaluation of oil soluble surfactant was carried out, and the experimental study of pre-injection of oil soluble surfactant to reduce steam injection pressure was carried out. It has been successfully applied in the development of the first ultra-heavy oil in Bohai oilfield. The results show that the oil soluble surfactant with asphaltene dispersibility has better temperature resistance and viscosity reduction effect, and the viscosity reduction effect is more than 95% before and after aging. Laboratory experiments show that the oil soluble surfactant can reduce the steam displacement resistance of the displacement front and the affected area. When the injection amount of oil soluble surfactant is 0.2PV, the maximum steam injection pressure can be reduced by 22.9% and the steady steam injection pressure by 10.8%. The design treatment radius of oil soluble surfactant is 0.15m, and the field test shows that the steam injection pressure decreases by 1.1MPa during steam injection.

After adopting the depressurization and increase injection volume technology, the field injection pressure is effectively reduced, the steam injection effect of ultra-heavy oil is guaranteed, and the technical guarantee for the subsequent development, promotion and application of ultra-heavy oil is provided.
Plant genetic engineering makes treasure from trash
Authors: Forner Joachim , Kleinschmidt Dennis
Published: February 2023

We have seen in recent years a massive leap forward in plant genetic engineering which holds great promise for future plant breeding. However, the genes that steer the plant’s powerhouses had resisted our attempts to change them. We tried a technique that had fallen out of favour in the last decade, and we unexpectedly discovered an efficient and valuable tool.
Development and Validation of a Selective Reversed-phase High Performance Liquid Chromatography Method for the Quantification of 1 ALPHA -Hydroxy Vitamin D2 and its Impurities
Authors: Sheela G Jaya , Babu M Satya , Kumar Pramod .
Published: February 2023

A selective reversed-phase high-performance liquid chromatography (RP-HPLC) technique was developed for 1α-hydroxy vitamin D2 (Doxercalciferol) related substances analysis. The technique is proficient of eluting various impurities related to process and degradation. To separate both the vitamin D2 Analogs i.e., doxercalciferol and ergocalciferol. HPLC of Shimadzu, provided with autosampler, column oven, quaternary pump and UV detector, were used for development studies. The mobile phase used water and acetonitrile. The diluent used was methanol and detection was examined at wavelength 265 nm. The method is sensitive for doxercalciferol, ergocalciferol, impurity-A and impurity-B; the limit of detection (LoD), value is 0.01% and limit of quantitation (LoQ) value is 0.03%. Linearity of doxercalciferol and related impurities at various concentrations was performed and the obtained correlation coefficient for doxercalciferol is 0.995, ergocalciferol is 0.997, impurity-A is 0.990 and impurity-B is 0.993. The optimized method was validated and demonstrated that the technique is selective, precise, linear, sensitive and accurate. The method is simple, inexpensive and useful for routine testing of doxercalciferol API. In addition, the technique was effectively applied for the elution of both the vitamin D2 Analogs i.e., doxercalciferol and ergocalciferol. Further, the same method is applicable for the determination of assay for these two API’s and the same assay method was validated.
Envisioning Critical Literacy through Literary Work for EFL Pre-Service Teachers
Authors: Setiawan Rahmat , Nungki Nurbani Armelia
Published: February 2023

Teaching English seems to discredit literary works status as learning media, even though it has the inherent vigor to increase critical literacy. This is the fundamental case this research envisages to explore how literature as a bridge for critical literacy in the perspective of EFL pre-service teachers. Theoretically, this research is based on the concepts of literature, literacy, critical thinking, and EFL pre-service teachers. This research is a qualitative research. The approach used is a case study. The data in this study are responses or statements taken from several English education students who are EFL pre-service teachers. Data were taken from a discussion forum with 3 pre-service teachers as subjects. They are 7th semester students of English Language Education study program from 3 private universities in Surabaya. The technique of data is forum group discussion. The technique of data analysis is content analysis. From the analysis of the data, it results that the EFL pre-service teachers think that literary works are crucial to take portion because it can enhance the level of critical literacy through critical thinking, creativity, and open-mindedness.
Synthesis, Identification and Charcaterization of Potential impurities of Pomalidomide
Authors: Reddy Gopa Sudheer Kumar , Brahman Pradeep Kumar , Usenireddy Mallu
Published: February 2023

Pomalidomide is used for treating multiple myeloma and was synthesized for commercial use as a drug substance in highly pure form. In the process of synthesis of pure drug of pomalidomide, there is a possibility of formation of process related impurities. These impurities must be identified and controlled for producing safe medicine. In view of this, present study aimed at synthesizing four potential impurities of pomalidomide such as benzyldione, 5 – amino, desamino and nitrodion impurities. All these impurities were effectively synthesized and subsequently characterized using FT-IR, NMR and Mass spectroscopic analysis. In addition, a simple and accurate HPLC method was developed and validated for the separation and quantification of pomalidomide and its impurities synthesized in the study. The method utilizes kromasil C18 (4.6×150 mm, 5μm) column, 0.1 % orthophosphoric acid at pH 1.90±0.05 as mobile phase A, acetonitrile and mobile phase A in 60:40(v/v) as mobile phase B at 1.0 mL/min flow in gradient elution mode and UV detection at 220 nm. The method produces all validation parameters under the acceptable levels and can effectively estimate the impurities synthesized in the study. Based on the experimental findings, it can be concluded that the impurities synthesized in the developed procedure should be effectively used as reference standards for identifying and controlling the impurities in the manufacturing process of pomalidomide formulations.
Water diffusion in supramolecular cages revealed by ab initio molecular dynamics simulations
Authors: Lei Lei , Yang Zhenyu , Zhang Shaodong , Li Ming , Ling Sanliang
Published: February 2023

Proton-exchange membrane (PEM) fuel cells are one of the promising solutions for a zero-emission economy. Molecular cages enabling structural design to facilitate proton conduction have recently been proposed as promising candidates for the key PEM component. However, the proton transport dynamics and mechanism are difficult to understand by either experimental or simulation methods due to their structural complexity. We carried out ab initio molecular dynamics simulations on these large systems for hundreds of ps timescale. The results reveal that the two molecular cages formed from the same functional groups showed significant difference in interaction with water due to their difference in geometry. Each water molecule in Cage 1 with a spacious cavity form on average one less hydrogen bond. Therefore, Cage 1 has faster water dynamics, higher diffusion coefficient and much lower level of diffusion anisotropy. Our study shows the essential role of hydrogen bonding in water diffusion and reveals that the reasonable arrangement and passivation of strong electronegative atoms can further increase proton conductivity.
Simulation-guided engineering of split GFPs with efficient beta-strand photodissociation
Authors: Shamsudin Yasmin , Walker Alice R. , Jones Chey M. , Martinez Todd J. , Boxer Steven G.
Published: February 2023

Green fluorescent proteins (GFPs) are ubiquitous for protein tagging and live-cell imaging. Split- GFPs are widely used to study protein-protein interactions by fusing proteins of interest to split GFP fragments that create a fluorophore upon complementation. Complementation is typically irreversible, and controlled dissociation of the fragments would be desirable. The quantum efficiency of light-induced photodissociation of split GFPs is low, with extensive mutagenesis and screening using traditional protein engineering approaches proving difficult to implement. To reduce the search space, key states in the dissociation process were modeled by combining classical and QM/MM molecular dynamics and enhanced sampling methods, enabling the rational design and engineering of split GFPs with up to 20-fold faster photodissociation rates using non-intuitive amino acid changes. This demonstrates the feasibility of modeling complex molecular processes using state-of-the-art computational methods, and the potential of integrating computational methods to increase the success rate in protein engineering projects.
KATA MAJEMUK DALAM ISTILAH UANG DI MASYARAKAT ROTE DENGKA
Authors: Loe Efron Erwin Yohanis
Published: February 2023

AbstrakÂ Artikel ini menganalisis â€˜Penggunaan Kata Majemuk Dalam Istilah Uang Di Masyarakat Rote Dengkaâ€™. Terdapat tiga permasalahan dalam penelitian ini untuk ditemukan dan dijelaskan, yaitu: 1) Ciri, 2) Jenis, dan 3) Struktur Kata Majemuk. Masyarakat Rote Dengka adalah bagian dari suku Rote yang menetap di Pulau Rote dan dialek yang digunakan oleh penuturnya disebut dialek Dengka atau Dengga. Dialek Dengka adalah salah satu dari delapan belas variasi dialek dalam bahasa Rote dan digolongkan dalam rumpun bahasa Melayu Polinesia Tengah yang dipergunakan di kecamatan Rote Barat Laut (Grimes dkk, 1997:47). Tujuan penelitian ini untuk melakukan pendokumentasian kata majemuk berkaitan dengan ciri, jenis dan struktur dalam dialek Dengka. Selain itu, hasil penelitian ini dapat bermanfaat bagi peneliti berikutnya yang akan melakukan penelitiannya pada kata majemuk dalam bahasa daerah dan dialek yang lain. Hasil-hasil penelitian dalam dialek Dengka terkait bidang morfologi, khususnya kata majemuk masih sangat minim. Metode penelitian yang digunakan adalah metode simak dan cakap dipadu dengan wawancara langsung dan data yang diperoleh dari narasumber berupa data lisan. Hasil wawancara ditemukan dua puluh daftar data kata majemuk dengan ciri, jenis dan strukturnya masing-masing. Metode penyajian hasil analisis data bersifat informal dan formal. Pendekatan yang digunakan adalah pendekatan deskriptif kualitatif. Teori yang digunakan adalah teori Morfologi Generatif. Hasil analisis data, ditemukan dua ciri kata majemuk yaitu: 1) Sifat Konstruksinya dan 2) Sifat Unsurnya. Dari jenis kata majemuk ditemukan jenis kata majemuk unsur pertama diterangkan (D) oleh unsur kedua (M) dibagi atas dua jenis yaitu: 1) Unsur kedua berkelas kata sifat, dan 2) Unsur kedua bukan kata sifat. Dari segi struktur kata majemuk dibentuk dari dua morfem dan tiga morfem. Kata majemuk dua morfem, yaitu [doiÊ”+lae] dan, kata majemuk tiga morfem, yaitu [doiÊ”+modo+mbolo]. Kata majemuk dalam dialek Dengka didominasi kata majemuk endosentris. Dari hasil temuan menunujukkan bahwa proses pembentukan kata majemuk dalam dialek Dengka tergolong unik.Â
Disruption of polyhomeotic polymerization decreases nucleosome occupancy and alters genome accessibility
Authors: Amin Adfar , Kadam Sangram , Mieczkowski Jakub , Ahmed Ikhlak , Bhat Younus A , Shah Fouziya , Tolstorukov Michael Y , Kingston Robert E , Padinhateeri Ranjith , Wani Ajazul H
Published: February 2023

Chromatin attains its three-dimensional (3D) conformation by establishing contacts between different noncontiguous regions. Sterile Alpha Motif (SAM)–mediated polymerization of the polyhomeotic (PH) protein regulates subnuclear clustering of Polycomb Repressive Complex 1 (PRC1) and chromatin topology. The mutations that perturb the ability of the PH to polymerize, disrupt long-range chromatin contacts, alter Hox gene expression, and lead to developmental defects. To understand the underlying mechanism, we combined the experiments and theory to investigate the effect of this SAM domain mutation on nucleosome occupancy and accessibility on a genome wide scale. Our data show that disruption of PH polymerization because of SAM domain mutation decreases nucleosome occupancy and alters accessibility. Polymer simulations investigating the interplay between distant chromatin contacts and nucleosome occupancy, both of which are regulated by PH polymerization, suggest that nucleosome density increases when contacts between different regions of chromatin are established. Taken together, it appears that SAM domain–mediated PH polymerization biomechanically regulates the organization of chromatin at multiple scales from nucleosomes to chromosomes and we suggest that higher order organization can have a top–down causation effect on nucleosome occupancy.
The Efficacy of Microteaching in a Teacher Education Programme During the Lockdown at a University in South Africa
Authors: Sithole Nosihle Veronica
Published: February 2023

The microteaching programme is the initial phase of teacher development, and it intends to provide student teachers with a genuine experience of the teaching profession. Prior to the global COVID-19 lockdown, microteaching was conducted in a traditional face-to-face setting. However, the lockdown restrictions compelled such programmes to be carried out virtually using digital devices. Therefore, the aim of this qualitative study is to examine the efficacy of microteaching during the lockdown in a university teacher education programme. The research was conducted with two groups of Post Graduate Certificate in Education students at a university, in South Africa. Each group comprised of five members, with a totality of 10 participants. A case study research design was employed, and data were collected through observations and semi-structured interviews. An observation schedule and interview schedule were utilised to guide the accuracy of data collection. Thereafter, data were analysed using inductive thematic analysis, whereby codes and themes were developed. The findings reveal the efficacy of microteaching since all student teachers successfully completed their microteaching virtually with better marks when comparing Microteaching One and Microteaching 2. The microteaching programme was enhanced by improving the utilisation of technology resources in the programme. Student teachers’ digital skills, knowledge and critical thinking skills were enhanced. Conducting microteaching virtually also resulted in inclusive learning. It is concluded that technology resources played a vital role in the efficacy of microteaching during the lockdown. This study contributes to the literature on teacher education programmes to embrace technology utilisation in microteaching, even after the lockdown.
Una matriz teórica y práctica para abordar el debate electoral en la ciberdemocracia
Authors: Sarasqueta Gonzalo
Published: February 2023

El presente artículo indaga sobre las características del debate electoral en la actualidad. En primer lugar, se analizan los rasgos del paradigma de la ciberdemocracia: protagonismo del prosumidor, disonancia cognitiva, economía discursiva, economía cognitiva, economía de la atención, cultura hípervisual e imperativo narrativo. Acto seguido, se explora cómo dichas transformaciones impactan en la fisonomía y la dinámica del debate electoral, constituyendo tres fases clave en el mismo: pitch (antes), performance (durante) y spin (después). Por último, se añaden unas conclusiones y una serie de interrogantes que se abren de cara a futuras investigaciones.
Türkiye’de Bankacılık Sistemindeki Dijitalleşmenin Banka Mekânlarına ve Çalışanlarına Etkisi
Authors: TURAN Tütem
Published: February 2023

COVİD-19 pandemisi sonucunda gittikçe hız kazanan dijitalleşme, banka sektörünü de etkilemiş, birçok banka çalışma mekânlarını değiştirmiştir. Bu çalışmada, pandemi süreci sonrası hızla gelişen dijitalleşmenin 2022 yılındaki banka genel merkez ofislerine ve çalışanlarına nasıl yansıdığı araştırılmıştır. Banka çalışanlarının değişen mekânlara bakış açısını saptamak adına banka genel merkez ofis çalışanları ile çevrimiçi mülakat yapılmıştır. Dijitalleşme sonucunda; banka mekânlarının zamanla değişerek kamusal alana dönüşeceği düşüncesi çalışmanın ana hipotezidir. Blockchain (blok zinciri), Bitcoin (merkeziyetsiz kripto para birimi) gibi dijital para sistemlerinin kullanımın artması ve bu para sistemlerinin oluşturduğu grupların, kooperatif bir yaklaşımla kendi mekânlarını oluşturacağı varsayılmaktadır. Mobil bankacılığın gelişmesi sebebi ile müşteriler, banka işlemlerini çalışanlar yerine kendileri yapabilmektedir ve bunun sonucu olarak banka çalışanlarının iş gücündeki değişkenlik mekânlara yansıyacaktır. Çalışma, İstanbul’da seçilen banka genel merkez ofislerini kapsamış olup banka şubeleri ise çalışmada kapsam dışı bırakılmıştır. Çevrimiçi yapılan görüşmeler sonucunda genel merkez banka çalışanların, çalışma alanlarını ofis ve ev dışında kafe, kütüphane gibi kamusal mekânlardan yana tercih ettiği tespit edilmiştir. Banka firmaları günümüzde hibrit sistemini ağırlıklı olarak kullanmakta fakat çalışanlar ofis dışı mekânlarda daha çok iş verimliliği sağladıklarını belirtmişlerdir. Yapılan görüşmeler sonucunda bankalarda paylaşımlı ofis alanları (co-working) kullanımının yaygın olmadığı tespit edilmiştir. Bu doğrultuda banka firmalarının, ofislerinin iç mekân tasarımlarını yeniden düzenlemesi ve paylaşımlı ofis alanlarını genel merkezlerinde ya da kentlerin belirli lokasyonlarında konumlandırması iş verimliliği sağlaması açısından doğru olacağı düşünülmektedir. Çevrimiçi görüşmeler sonucunda banka ofisleri dışında farklı bir mekândan çalışma, çalışanların kuruma bağlılığını değiştirmediğini göstermiştir. Bu çalışma, güvene dayalı para alışverişinin sağlandığı bankaların ilerleyen yıllardaki mekân gerekliliğini sorgulatması yönünden önem taşımaktadır.
Some Results on Conditionally Sequential Absorbing Maps in Multiplicative Metric Space
Authors: Thirupathi T. , Srinivas V.
Published: February 2023

This paper aims to prove two general fixed point theorems in multiplicative metric space (MMS) by using reciprocally continuous mappings and conditionally sequential absorbing mappings. Further our outcomes are validated by discussing two appropriate examples.
Estimation of Finite Population Mean by Utilizing the Auxiliary and Square of the Auxiliary Information
Authors: Hussain Saddam , Iftikhar Anum , Ullah Kleem , Atta Gulnaz , Ali Usman , Parveen Ulfat , Arif Muhammad Yasir , Qayyum Ather
Published: February 2023

This article fundamentally aims at the proposition of new family of estimators using auxiliary information to assist the estimation of finite population mean of the study variable. The objectives are achieved by devising dual use of supplementary information through straightforward manner. The additional information is injected in mean estimating procedure by considering squared values of auxiliary variable. The utility of the proposed scheme is substantiated by providing rigorous comparative account of the newly materialized structure with the well celebrated existing family of Grover and Kaur (2014). The contemporary advents of the new family are documented throughout the article.
Kajian Eksperimen Metoda Injeksi Air Berkarbon untuk Peningkatan Produksi Minyak dan Pemanfaatan Emisi CO2
Authors: Anggraeni Septi , Romli M , Tobing Edward
Published: February 2023

Produksi dan cadangan minyak Indonesia terus mengalami penurunan, oleh sebab itu diperlukanusaha-usaha untuk mengatasi masalah ini. Selain itu penggunaan energi fosil yang belum tergantikan olehenergy terbarukan menimbulkan kelebihan emisi gas yang mengakibatkan perubahan iklim. Oleh sebabitu pemerintah telah mengeluarkan Perpres Nomor 61 Tahun 2011 tentang Rencana Aksi Nasional GasRumah Kaca, untuk mengurangi emisi gas CO2. Salah satu metoda EOR yang digunakan untuk menaikanproduksi minyak dan menyimpan gas CO2 adalah dengan menginjeksikan air yang disaturasikan dengangas CO2 kedalam reservoir minyak. Tujuan dari penelitian ini adalah melakukan investigasi metoda injeksiair berkarbon dengan melakukan eksperimen pendesakan fl uida di laboratorium. Hasil dari eksperimendi laboratorium memperlihatkan metoda injeksi air berkarbon dapat menaikkan perolehan minyak dengantekanan injeksi yang relatif lebih rendah dari metoda injeksi gas CO2 lainnya. Dengan demikian metodaini diharapkan dapat menekan biaya dalam implementasi injeksi gas CO2 di lapangan.
Lumpur Berbasis Air Rendah Padatan dan Tahan Temperatur Tinggi Bagi Pemboran di Formasi Serpih
Authors: Kartini Rachmi
Published: February 2023

Tulisan ini membahas mengenai fl uida pemboran untuk formasi serpih. Selama ini permasalahan dalampemboran banyak terkait dengan ketidakstabilan lubang sumur di lapisan serpih. Hal ini menjadi perhatianmengingat meningkatnya usaha eksplorasi serpih gas yang merupakan upaya dalam mencari sumber energyalternative. Tujuan dari penelitian yang sudah dilakukan adalah untuk mencari formulasi fl uida pemboranberbasis air yang kompatibel dengan formasi serpih, dalam arti tidak mengakibatkan ketidakstabilan lubangsumur. Untuk itu dilakukan pengujian terhadap beberapa formulasi lumpur, dalam interaksinya denganperconto shale, dengan menggunakan linear swell tester (LSM). Disamping itu juga dilakukan analisaterhadap mineralogy perconto dengan menggunakan metoda x-ray diffraction (XRD), untuk mempelajarisensitivitas masing-masing mineral terhadap berbagai formula fl uida pemboran yang dirancang. Hasildari penelitian ini adalah formulasi fl uida pemboran yang diberi nama Brine Mud. Dibandingkan denganlumpur KCl Polimer yang biasa dipakai, Brine Mud memberikan hasil LSM yang lebih baik.
Alman Çocuk Edebiyatı Örneği ile “Politik Doğruluk” Kavramı
Authors: ALTINKAYA NERGİS Dilek , HACIKÖYLÜ Büşra
Published: February 2023

Dünyanın küreselleşmesi ile birlikte çok kültürlü ve sürekli yeniden şekillenen yaşam biçimlerinin yaygınlaşmasının beraberinde yeni dinamikler getirdiği ve bunların en başta dilimize de yansıdığı yadsınamaz. Politik doğruluk, bu süreç içinde karşımıza çıkan ve genellikle farklı dil, din, kültür ve cinsiyetten kişileri incitmekten kaçınmak amacıyla, özenle kullanılan ifade, düşünce ve uygulamaları tanımlamak amacıyla kullanılan bir terimdir. Dolayısıyla kavramın temel amaçlarından biri sosyal açıdan dezavantajlı olan birey veya gruplar hakkında konuşurken, onları ötekileştirebilecek veya kötü hissettirebilecek ifadeleri kullanmaktan kaçınmakken bir diğer amacı bireyin kendini toplum içinde „farklılığı“ sebebiyle dilsel olarak dışlanmış ve ayrımcılığa uğramış hissetmesini önlemeye yönelik bir farkındalık yaratmaktır.

Araştırmada günümüzün bir ihtiyacı olarak karşımıza çıkan „Politik Doğruluk“ kavramının günümüz Türkiye‘sinin gündeminde ve disiplinler arası tartışmalarda da çoktan yerini aldığı, fakat daha ziyade medya acısından ele alındığı ve henüz çeviri bilimsel açıdan pek irdelenmediği görülmüştür. Dolayısıyla bu çalışmanın temel amacı; çoğu zaman belirli bir derecede ideolojik ideallere hizmet eden Çocuk Edebiyatının hem dil içi (intralingual) hem de diller arası (interlingual) çeviri yoluyla, ön yargıları ve toplumsal eşitsizlikleri nasıl yeniden ürettiğini ya da onları nasıl yıkabileceğini veya en azından bu konu ile ilgili nasıl bir farkındalık yaratabileceğini ortaya koymak ve bu vesile ile çeviri ile politik doğruluk arasındaki ilişkiyi tartışmaktır. Bu amaç doğrultusunda örnek incelemesi olarak Alman Çocuk Edebiyatındaki gelişmeler ele alınarak çeviri bilimsel açıdan örneklendirilecek ve çeviri yaparken Politik Doğruluk açısından uygun olan sözcükleri belirlemeye yardımcı olması açısından Lasswell İletişim Modelinin nasıl uygulanabileceğine değinilecektir.
A magyarországi gyógyszeripar és autóipar a globális értékláncokban – kutatási eredmények : A Budapesti Gazdasági Egyetem Külkereskedelmi Kar Nemzetközi Gazdaságtan Tanszék és a Jövő Értékláncai Kiválósági Központ kutatási eredményei
Authors: Antalóczy Katalin , Gáspár Tamás , Sass Magdolna
Published: February 2023

Tanulmányunk a Budapesti Gazdasági Egyetem Külkereskedelmi Kar Nemzetközi Gazdaságtan Tanszékén és a Jövő Értékláncai Kiválósági Központban 2018–2021 között folytatott kutatások eredményeit mutatja be. A kutatás két magyarországi kulcságazat, a gyógyszeripar és az autóipar globális értékláncokba történt beágyazottságának jellemzőit, előre- és hátramutató kapcsolatait, valamint hozzáadott-érték előállításának változásait vizsgálta. Módszertanunk kevert volt: egyfelől inverz input-output táblázatokat elemeztünk, bemutatva a két ágazat helyi és nemzetközi kapcsolatait, másfelől vállalati interjúkkal néztünk a folyamatok mélyére, kerestünk magyarázatokat a tendenciákra és pontosítottuk a képet. Az eredmények azt mutatják, hogy mindkét ágazatban a hazai gazdaság mélyen beágyazott a nemzetközi értéktermelésbe. Ugyanakkor a kutatás arra is rámutat, hogy az értékláncok jellege, hossza és a beszállítói kör minősége jelentősen eltér, továbbá a tulajdonviszonyok vizsgálata nélkül torz képet kapunk a magyar hozzájárulásról.
A luxustermékek és luxusszolgáltatások elméleti áttekintése
Authors: Juhász-Dóra Katalin
Published: February 2023

Évszázadokon keresztül az emberek különböző termékeket gyűjtöttek, mivel a szép és különleges tárgyak birtoklása okozott elégedettséget számukra, napjainkban azonban egyre hangsúlyosabbá vált a különböző szolgáltatások igénybevétele és az élményszerzés. A luxus időtlen idők óta exkluzív és ritka jelenség volt, a luxustermékek és luxusszolgáltatások definiálásáról azonban nincs konszenzus, mert komplexitásuk révén számos dimenzióra, tényezőre vezethető vissza, mivel különféle nézőpontok szerint, különböző korszakokban, kultúrákban és iparáganként eltérő a jelentéstartalma. Jelen tanulmány a szakirodalom feldolgozása alapján összegzi a luxusszolgáltatások és luxustermékek meghatározó kulcsdimenzióit.
A szépségverseny játék múltja és lehetséges jövője
Authors: Komáromi György
Published: February 2023

A szépségverseny játék (beauty contest game) hangsúlyosan tárgyalt modell a játékelméletben és a kísérleti közgazdaságtani kutatásokban, melynek oka, hogy a játék maga egyszerű és több olyan tulajdonsággal rendelkezik, melyek központi szerepet foglalnak el a közgazdasági gondolkodásban: Nash-egyensúly, dominancia elv szerinti megoldás, korlátozott racionalitás, adaptív gondolkodás. Az alábbi tanulmány bemutatja a játék koncepcióját, fejlődését és használatát a kísérleti közgazdasági kutatásokban.
Családi vállalkozások kutatása a Budapesti Gazdasági Egyetemen
Authors: Radácsi László , Csákné Filep Judit , Timár Gigi
Published: February 2023

Annak ellenére, hogy a családi vállalkozásokat a világ számos gazdaságában kiemelt fontosságú szereplőnek tekintik, Magyarországon sokáig hiányzott az ezen cégekre irányuló kiemelt figyelem. Jelen tanulmány összefoglalja a családi vállalkozás kutatás magyarországi előzményeit, beleértve a témához kapcsolódó tudományos publikációk számának alakulását, módszertani megközelítését és tematikai fókuszát. A szerzők áttekintik továbbá a Budapesti Gazdasági Egyetemen az elmúlt években zajló, családi vállalkozásokat vizsgáló kutatásokat, valamint bemutatják a Családi Vállalkozás Kutatási Program céljait és legfontosabb tudományos és tudományhasznosítás területén elért eredményeit.
A fenntartható fejlődés emberi erőforrás pillérének méréséről
Authors: Sándorné Kriszt Éva
Published: February 2023

A tanulmányban a fenntartható fejlődés négy alappillére közül az emberi erőforrásokkal foglalkozunk. Keressük az oktatás és a humánerőforrás fejlesztésének összefüggéseit. A fő célkitűzéseket a Nemzeti Fenntartható Fejlődési Keretstratégia határozza meg. A tudás-oktatás területére fókuszálva felhasználjuk a nemzetközi felmérések, a PISA és a TIMSS eredményeit. Kutatjuk a minőségi oktatás, az oktatásban eltöltött idő és az oktatási rendszer szelektivitásának kérdéseit. Vizsgáljuk hogyan hasznosulhat minél jobban a tudás a társadalomban és a gazdaságban, továbbá kitérünk az élethosszig tartó tanulás folyamataira is. A következtetések során pedig eljutunk az emberi erőforrás, mint alappillér helyzetének méréséhez és nemzetközi összehasonlításához szükséges indikátorokhoz.
Regionális különbségek alakulása különböző területi szinteken értelmezve Magyarországon
Authors: Dobó Róbert , Pintér Tibor
Published: February 2023

Magyarország területi különbségeinek vizsgálata a tudományos elemzések középpontjában szerepel évtizedek óta. Hazánk csatlakozása az Európai Unióhoz természetesen csak még inkább megnövelte ezt az érdeklődést a kohéziós források megjelenésének köszönhetően, hiszen akkoriban kifejezetten a kevésbé fejlett régiók felzárkóztatása volt a közösségi célkitűzés e pénzügyi eszközöket tekintve. A regionális gazdaságtan és a regionális tudomány diszciplínája egyre kiforrottabb módszertani megközelítéseket kínál a regionális, területi különbségek mérésére. Jelen tanulmányban egyszerűen számolható mutatókkal dolgoztunk, mint amilyen a terjedelem, a relatív terjedelem, valamint a Hoover-index. A tudományos körökben gyakran használt NUTS (Nomenclature des Unités Territoriales Statistiques, azaz statisztikai célú területi egységek nómenklatúrája)-2-es szint mellett pedig a NUTS-3-as, vagyis a megyei (2023-tól vármegyei) szintet is fontosnak tartottuk bevonni a vizsgálódásainkba. Számításaink eredményei arra engednek következtetni, hogy a különbségek mértéke visszatért a két évtizeddel ezelőtti szintre, ezzel megtört az európai uniós csatlakozás után jelentkező széttartási tendencia.
Oroszország változó helye a globális térben (Földrajzi szempontok az orosz-ukrán háborúhoz)
Authors: Engelberth István
Published: February 2023

„A földrajz ellen sok, mindent lehet tenni, kivéve politizálni” – mondta Antall József miniszterelnök (1990-1993). Oroszország szerepét, lehetőségeit a globális térben döntően határozza meg kontinensnyi méretű állam földrajzi elhelyezkedése. A 2022. február 24-én korlátozott konfliktusból pusztító háborúvá vált orosz-ukrán háborút számos elemzés igyekezett értékelni, értelmezni. Az alábbi tanulmány elsősorban arra igyekszik rámutatni, számos elemzést, megközelítést is ötvözve, hogy a földrajzi-geopolitikai helyzet még egy ilyen hatalmas ország lehetőségeit is meghatározzák történelmi távlatokban. A periférián maradás, a sikertelen felzárkózás a fejlett országokhoz determinálják Oroszország lehetőségeit, mely következménye az elmúlt évtizedekben az erőtér zsugorodása a földrajzi térben. Ráadásul abban a kedvezőtlen pozícióban is van Oroszország, hogy két centrumtérség – egy felfelé törekvő Kína és egy pozícióját veszítő Európa – között fekszik. A „birodalom” gyengülése tulajdonképpen a Szovjetunió megszűnésével is folytatódott, az egykori csatolt részek (az ún. közel-külföld) is egyre inkább önállóvá válnak, sőt a folyamat Ukrajnával már magát a keleti szláv „magterületet” is elérte.
As Cartas jesuíticas e os gêneros do discurso
Authors: Casella Cesar Augusto de Oliveira
Published: February 2023

Este trabalho, de viés discursivo, apresenta reflexões que se inserem no estudo das letras coloniais brasileiras. O objetivo principal é o de investigar e discutir o gênero epistolar como um gênero discursivo, como é compreendido na perspectiva bakhtiniana. Para isto, faz-se uma análise de alguns dos textos fundamentais de Alcir Pécora e de João Adolfo Hansen nos quais as cartas jesuíticas foram tratadas. Metodologicamente, portanto, a pesquisa trabalha com um corpus de arquivo, ou seja, com enunciados presentes em textos já publicados em livros, tomando-os em chave comparatista. O resultado fundamental é a compreensão das cartas jesuíticas como um gênero discursivo, o que permite entender as condições de produção dos enunciados jesuíticos e combater certo anacronismo interpretativo. Por fim, avança-se uma hipótese da importância da noção de  para a correta compreensão da representação dos indígenas na epistolografia colonial.
Atividades e tarefas escolares na formação docente inicial:uma análise de enunciados de escrita
Authors: Sousa Adna , Souza Clara Regina Rodrigues de
Published: February 2023

O presente artigo contempla um estudo sobre a elaboração de atividades de escrita, em contexto de formação docente inicial. Sabemos que elaborar atividades e tarefas escolares é uma prática inerente à atuação docente, visto que o professor produz constantemente atividades aplicadas em sala de aula, para mobilizar saberes dos alunos, no processo de aprendizagem. Entretanto, por vezes essa prática carece de ser sistematizada, em cursos de licenciatura. Nessa perspectiva, desenvolvemos uma metodologia em que investigamos a produção de enunciados de atividades de escrita, elaboradas por alunos pré-concluintes do curso de Letras Língua Portuguesa. Para tanto, fundamentamo-nos em Araújo (2017), que trata sobre enunciados de atividades; Antunes (2003; 2009), que discute sobre atividade de escrita. Os resultados da análise apontam para o fato de que os professores em formação inicial, apesar de não terem experiência com a prática de elaborar enunciados, demonstram um desenvolvimento satisfatório nas atividades de escrita elaboradas. Tal resultado evidencia, pois, um processo de orientação, planejamento e (re)elaboração dos enunciados.