bluuebunny/crossref_metadata_2025 huggingface dataset:
Applications of Differential Geometry of Curves in Roads Design
Authors: Burlacu Adrian , Mihai Adela
Published: March 2024

An important role in the roads design is played by plane curves, if the road lies on a plane surface and by space curves, if the road can not be embeded in a plane. This article presents some work done in the two and three dimensional roads design, by using the differential geometry methods. A study of a general case for plane roads is given.
Road Safety for All Road Users – Current Situation and Perspectives for 2030
Authors: Alina Burlacu F. , Adrian Burlacu , Pop Horațiu
Published: March 2024

This article presents a brief overview of Romania’s road infrastructure and road safety situation in general, and outlines perspectives for reducing the number of lives lost in road crashes by 2030. Romania’s road fatality rate per 100,000 population has improved overall from a 2008 high of around 15 to the current 2020 value of 8,5. However, despite a 30,8% reduction in road deaths during the past decade, Romania’s total annual number of road deaths has remained at an average of around 1890 fatalities per annum over this period, and compared to the EU average of 36,7%, Romania is positioned among the worst performing countries in the European Union (EU) in recent years in terms of road safety. A World Bank road safety management capacity review performed in 2016 found a series of factors to be contributing to this high number of road deaths, such as inadequate political commitment to effective actions to reduce road fatalities, fragmented government road safety activities across a number of regulatory entities, speed limits set at levels that exceed internationally accepted survivable limits, weak traffic law enforcement including a lack of speed enforcement cameras resulting in a failure of drivers to comply with speed limits, and a lack of structured programs to implement human error tolerant road infrastructure constructed according to Safe System principles. A series of recommendations from the capacity review were adopted since 2016, although much remains to improve road safety in Romania, especially in light of the Second Decade of Action for Road Safety 2021-2030 and the United Nations Sustainable Goals.
Advanced Technologies for Detection and Assessment of Road Degradation State. Experimental and Modeling Approaches
Authors: Crăciunescu Dan , Racanel Carmen , Ionița Stefan , Sandu Robert , Niculescu Mariana , Sicoe George
Published: March 2024

Detection and classification of degradation types is a fundamental activity in road pavement management. Monitoring activities through manual / visual inspections are time consuming, costly and cause safety issues. The introduction of new high-efficiency equipment for the detection and classification of degradation opens a new perspective in the analysis and management of roads. Thus, the automatic monitoring of the road asset introduces new performance indicators and more complex criteria for classifying problems. In this paper, an analysis is presented by referring to examples of measurements in Romania, detection, and classification of the main types of degradation, study, and capabilities of ACD (Automatic Crack Detection). A numerical and experimental study was also conducted to improve the operational optimization of ACD equipment to increase its usability and performance.
Geotechnical Monitoring - Reducing the Risks Related to the Construction of Infrastructure
Authors: Olteanu Andrei Constantin , Tomsa Cristina , Malancu Teodor
Published: March 2024

The presence of deep excavations or complex structures in urban areas can have an important impact on all involved factors: beneficiary, contractor, designer, consultant, and neighborhood. For an efficient management of the risk factors associated with each project, the monitoring of the parameters associated with each risk mechanism is carried out. Monitoring involves analyzing and identifying risk factors, choosing the ones that should be monitored and those who need to be discarded through technical solutions.
Parametric Studies for Flexible Pavements
Authors: Claudia Petcu
Published: March 2024

The problem of dimensioning pavements requires knowledge of the assumptions and calculation schemes underlying the assessment of deformations of pavements under traffic pressure.

The aim of this paper is to study the influence of both the values chosen for the dynamics module of asphalt courses in the pavement and the elastic composition of the pavement using three bituminous layers (wearing, binder, base), or two bituminous layers (wear, binder/base).

In the first part of the paper a general description of pavements is presented. Roads are also described, starting from Roman roads to modern roads.

The characteristics of flexible pavements are highlighted and the dimensioning methods and specialised software for modelling and calculating these structures are presented.

In this case study, the variation of the defining parameters in the design of pavements was investigated by varying the dynamic elastic modulus of bituminous courses and by varying the composition of the pavement by removing the binder course and the base course.
Wege aus der Wachstumsschwäche
Authors: Grimm Veronika , Kroeger Thilo , Ochsner Christian
Published: March 2024

Germany is experiencing a significant decline in potential output. The main reason is demographic aging and, in particular, the retirement of the baby boomers. The available labour volume is also being exacerbated by low employment rates among older workers and a decline in average working hours. In order to overcome weak growth, it is key to strengthen the economy’s potential output through technological progress and the efficient allocation of resources. This article analyses the development of potential output growth, quantifies possible contributions to overcoming weak growth and concludes by outlining economic policy options. We discuss two areas that are important for strengthening potential growth: mitigating the consequences of demographic aging and increasing investment and innovation. Mitigating the aging effects requires measures to increase labour market participation and the substitution of labour with capital goods where possible. The latter helps to ensure that more workers become available in areas where substitution through automation is more difficult. Increasing investment and innovation is crucial in order to increase productivity, modernise and expand the capital stock and open up new growth areas.
Inflationsberechnung: Zinspolitik der EZB wird als Inflationstreiber statistisch nicht erfasst
Authors: Schwanitz Johannes
Published: March 2024

After ten consecutive increases in the prime rate by the European Central Bank’s (ECB), the question arises: What significance do these measures have, both indirectly for the interest rates increased at all value-added levels on the corporate side, and for households? While the prices for rents, being the largest component, are factored into inflation calculations, the dramatically increased interest rates for real estate loans – specifically for owner-occupied housing – are not considered at all. In this article, an extension of the calculation scheme is demonstrated to make transparent the direct effect of the prime rate increase on real estate owners’ expenses.
What Effect Does CEO Power Has over Integrated Reporting? Evidence from Indonesian Listed Companies
Authors: Nurmala Putri , Adiwibowo Akhmad Sigit
Published: March 2024

This study aims to analyze the role to chief executive officer (CEO) in integrated reporting (IR) adoption and whether growth opportunities moderate this role. This study is based on an unbalanced data panel of 106 firms listed on Indonesian Stock Exchange from  2017 to 2021 (530 observations). Using a panel regression model this study found that CEO power does not affect IR, and growth opportunities do not modify the relationship. Furthermore, this study also revealed that there is only one company sample that published IR based on the  International Integrated Reporting Council (IIRC) framework in 2021. It is suggested that policy makers need to encourage IR adoption trough regulation and incentives.
Exploring the Potential Applications of Blockchain Technology in Accounting Practice: A Systematic Literature Review
Authors: Mahdani Rimal , Risnafitri Hafizhah , Risnafitri Hafizhah , . Mardiaton
Published: March 2024

This study aims to examine the potential of blockchain technology in revolutionizing conventional accounting processes and mitigating persistent inefficiencies and problems. This study introduces the potential of blockchain technology to revolutionize conventional accounting processes and address persistent inefficiencies and challenges. By employing a rigorous search methodology, establishing specific criteria for selection, and conducting meticulous data analysis, this paper presents significant discoveries pertaining to the implementation of blockchain technology in the field of accounting. The results suggest an increasing fascination with the potential of blockchain technology to bring about a transformative impact on the accounting sector. The use of blockchain technology in the field of accounting encompasses several areas such as the recording of transactions, automation of accounting operations, and enhancement of auditing procedures. Application of this technology contributes to the improvement of transparency, integrity, and efficiency in financial reporting. However, for widespread adoption to occur, it is imperative to overcome many difficulties like standardisation, interoperability, scalability, legal compliance, and data protection. The study emphasizes the importance of investigating the possibilities of blockchain technology in the field of accounting to address conventional accounting obstacles. The findings of this study may be utilized by researchers to discover potential areas for further research. Additionally, practitioners can acquire valuable insights into the advantages and difficulties associated with implementing these findings.
Perancangan Motif Kuda Renggong sebagai Ornamen Pintu Berbahan Dasar Bonggol Jagung
Authors: Arafah Karenina Martha , Aulia Rifka Restu , Septianto Eggi
Published: March 2024

Penelitian ini merupakan perancangan ornamen pintu berbahan dasar bonggol jagung dengan memanfaatkan bentuk Kuda Renggong sebagai salah satu ikon khas budaya Kabupaten Sumedang. Penelitian dilakukan melalui pendekatan berbasis material dengan mengidentifikasi masalah, menganalisa data, studi kasus, menentukan kriteria dan implementasi konsep. Tujuan yang ingin dicapai pada penelitian ini adalah menghasilkan ornamen berbahan dasar bonggol jagung dengan motif berbentuk Kuda Renggong untuk diaplikasikan pada pintu rumah bonggol jagung. Dengan mempertimbangkan karakteristik bonggol jagung yang akan menentukan kriteria desain. Pada akhir proses dihasilkan Prototype berupa pintu dengan memanfaatkan limbah bonggol jagung sebagai bahan dasar untuk ornamennya dan menawarkan nilai kebaruan berupa pengaplikasian baru citra visual dari kebudayaan setempat yaitu Kuda Renggong pada pintu rumah bonggol jagung.
Kerang sebagai Inspirasi Karya dalam Seni Keramik
Authors: Friskasari Sella
Published: March 2024

Penciptaan Seni Keramik ini mengambil konsep kerang yang divisualisasikan menjadi sebuah karya seni keramik. Kerang sebagai penyampaian makna perlindungan diri, dilihat dari bentuk cangkangnya yang berfungsi melindungi dari lingkungan dan predator luar. Adapun permasalahan yang akan diangkat :1) Apa yang dimaksud dengan kerang? 2) Mengapa kerang diangkat sebagai sumber ide dalam penciptaan karya seni keramik? 3) Bagaimana memvisualisasikan kerang ke dalam karya seni keramik? Pembuatan seni keramik ini melalui proses pencarian ide atau konsep. Proses eksplorasi ide, konsep dan bentuk, karya ini divisualisasikan dengan menggunakan teknik lempeng, pijit dan pilin. Proses pembakaran biskuit (700℃-738℃) dan glasir dengan suhu bakar (1100℃-1110℃).  Penyajian karya diletakkan di atas pustek dan didisplay dengan menggunakan tali, lampu, dan dakron sebagai pendukung karya. Diharapkan karya ini dapat dinikmati oleh semua orang dan dapat dijadikan sebagai inspirasi karya bagi orang lain.
Analysis of the Mental Workload Generated by Learning Experiences Through Augmented Reality and Virtual Reality in Students of Regular Basic Education
Authors: Tinco-Tupac Santos Toribio , Torres-Gonzales Selene Belen , Maraza-Quispe Benjamin
Published: March 2024

Objetive: To analyze the mental workload produced by immersive learning experiences through augmented reality (AR) and virtual reality (VR).
 
Theoretical framework: This section presents the main concepts and theories that support the research. The theory of cognitive mental workload includes dimensions such as Frustration, Performance, Effort, Physical, Mental, and Temporal Demand, providing a solid foundation for understanding the research context.
 
Method: The methodology used for the research follows a qualitative quasi-experimental approach. The selected population consisted of 100 students, from which 2 groups of 50 members each were randomly selected using simple random sampling, experimental and control groups. Seven learning sessions were developed in the Social Sciences area. The experimental group experienced learning activities involving AR and VR, while the control group underwent traditional sessions. The experimental group students faced tasks related to navigation, movement, manual interaction, information processing, search, storage, and decision-making. The standardized NASA-TLX (Task Load Index) instrument, comprising 6 dimensions: Frustration, Performance, Effort, Physical, Mental, and Temporal Demand, was used for analysis.
 
Results and conclusion: The results show that experimentation with AR presents a moderate mental workload, while experimentation with VR presents a significant mental workload, compared to students who did not participate in AR and VR experiences, who did not present mental workload in the development of their activities.
 
Research implications: The practical and theoretical implications of this research are discussed, providing insights into how the results can be applied or influence practices in the field of mental workload. These implications may encompass frustration, performance, effort, physical, mental, and temporal demand.
 
Originality/Value: This study contributes to the literature by showing how mental workload directly influences academic performance and learning effectiveness, as excessive levels of workload can negatively affect attention and information retention.
Factors Affecting the Social Responsibility Declaration Activities of Joint Stock Companies in the Consumer Goods Industry in Vietnam
Authors: Thuy Nguyen Thi Thu , Trang Nguyen Thi Thu
Published: March 2024

Objective: The article points out that there are nine factors that affect the social responsibility declaration activities of enterprises.
 
Research method: The article uses qualitative methods combined with quantitative methods, through an investigation of 127 joint stock companies in the consumer goods industry on the HOSE, HNX and UpCom exchanges in the period 2018-2020, the method purposive stratified random sampling method. The survey results were used to synthesize and analyze the results of the OLS linear regression model.
 
Research results: the authors estimated and tested the correlation of 9 factors affecting corporate social responsibility declaration activities in descending order including: (1) Audit quality, ( 2) Number of meetings of the board of directors, (3) Size of the enterprise, (4) Concurrentity of the Chairman of the Board of Directors, (5) Age of the enterprise, (6) Percentage of female members on the Board of Directors,( 7) Profit ratio of the Enterprise, (8) Independence of Board members, (9) Financial leverage.
 
Discussion of research results: Completing the legal framework for social responsibility declaration activities in Vietnam. Strictly handle violations of information disclosure activities on the stock market. Increase this administrative fine by a fine calculated based on the percentage of violation level for each information disclosure category to deter violations.
Overcaming Children’s Temper Tantrums Through Emotional Literacy Strategies
Authors: Eva Nur , Machmudah  , Farida Ika Andrini , Chusniyah Tutut , Fitriyah Fifi Khoirul , Saputri Tiyas , Wahono  , Santy Wesiana Heris
Published: March 2024

Purpose: The primary objective of this study was to assess the effectiveness of emotional literacy strategies, implemented through group guidance, in enhancing skills related to managing temper tantrums among preschool students. Employing a quasi-experimental design with pretest-posttest control group design, the research aimed to determine the efficacy of the intervention in improving emotional regulation skills among participants.   Methods: The study utilized a quasi-experimental design with pretest-posttest control group design. Purposive sampling was employed for sample selection. Data analysis involved the use of the Wilcoxon test to assess improvements in temper tantrum management skills before and after the intervention. Additionally, the Mann Whitney U Test was conducted to ascertain whether differences existed between the two intervention groups.   Results and Discussion: The analysis revealed that the emotional literacy strategy implemented through group guidance was effective in enhancing skills related to managing temper tantrums among preschool students at TK Mutiara Sidoarjo. The findings suggest that the intervention contributed to significant improvements in participants' ability to regulate and manage their angry emotions. Furthermore, the results indicated that the emotional literacy intervention yielded positive outcomes across the intervention groups, highlighting its efficacy in addressing temper tantrum behaviors among preschoolers.   Implications of the Research: The research outcomes hold significant implications for educators, counselors, and professionals working with preschool-aged children. By demonstrating the effectiveness of emotional literacy strategies in managing temper tantrums, the study provides valuable insights into the importance of promoting emotional regulation skills early in childhood development. The findings underscore the potential of group guidance interventions to foster emotional competence and enhance social-emotional well-being among young children. Originality/Value: This study contributes to the existing literature by providing empirical evidence of the effectiveness of emotional literacy strategies in managing temper tantrums among preschool students. By employing a quasi-experimental design and utilizing specific assessment tools, the research offers valuable insights into the impact of targeted interventions on emotional regulation skills in early childhood. The findings highlight the importance of incorporating emotional literacy programs into early childhood education curricula and underscore the value of proactive interventions in promoting healthy socio-emotional development among young children.
The Convention of Regular Treatment with Sphetic Conversion During Intensive Tuberculosis Treatment
Authors: Zahroh Chilyatiz , Setiadi Nanang Nurrachmat , Ainiyah Nur , Setiyowati Eppy , Kusuma Erik , Mulyadi
Published: March 2024

Purpose: The primary objective of this research is to investigate the relationship between medication regularity and sputum conversion following the intensive treatment phase of pulmonary tuberculosis (TB) at Banyu Urip Public Health Center in Surabaya. Recognizing the importance of sputum conversion as a key determinant of treatment success in pulmonary TB, this study aims to assess the impact of medication regularity on the achievement of sputum conversion among TB patients.
 
Methods: This study adopts an analytic correlation approach with a cross-sectional design. The study population comprises tuberculosis patients receiving treatment at the Public Health Center. Data collection involves simple random sampling of 51 respondents, focusing on variables related to medication regularity and sputum conversion. Questionnaires based on the Morisky Medication Adherence Scale-8 (MMAS-8) and observation sheets are utilized as instruments. Data analysis is conducted using logistic binary regression to examine the relationship between medication regularity and sputum conversion.
 
Results and Discussion: Among the 51 respondents, 70.6% demonstrated regularity in treatment, with 76.5% achieving sputum conversion. The Spearman rank test analysis indicates a significant relationship between medication regularity and sputum conversion (p = 0.011; p < α = 0.05; r = 0.352). These findings suggest that adherence to medication is positively associated with successful sputum conversion following the intensive treatment phase of tuberculosis. Such results underscore the critical role of medication regularity in achieving positive treatment outcomes in TB patients.
 
Implications of the Research: The research outcomes hold important implications for healthcare providers and policymakers involved in tuberculosis management and control. The findings highlight the significance of promoting medication regularity among TB patients to enhance treatment efficacy and increase the likelihood of sputum conversion. It underscores the importance of providing comprehensive counseling and support services to TB patients and their families, along with engaging other relevant stakeholders, to ensure adherence to treatment protocols throughout the course of therapy.
 
Originality/Value: This study contributes to the existing literature by focusing on the relationship between medication regularity and sputum conversion specifically within the context of tuberculosis treatment. By employing logistic binary regression analysis and incorporating the MMAS-8 questionnaire, the research offers valuable insights into the factors influencing treatment outcomes in TB patients. The findings provide a basis for targeted interventions aimed at improving medication adherence and enhancing treatment success rates in pulmonary tuberculosis, thereby contributing to more effective tuberculosis management strategies.
Acceptance Analysis of Electronic Application Ready for Marriage and Pregnancy (Elsimil) Based on the Technology Acceptance Model (Tam) Approach
Authors: Ibad Mursyidul , Lutfiya Indah , Sofiyah  , Handayani Dwi , Muna Kuuni Ulfah Naila El
Published: March 2024

Purpose: The Elsimil application is an intervention effort to prevent stunting by conducting health screening which is followed up with assistance for marriage and pregnancy readiness to prospective brides. The Elsimil application review rating on the Play Store / App Store on February 01, 2023, which is 3.2, is still low and there are many user complaints related to difficulties in registering, operating the application and frequent system problems. The purpose of this study was to analyze the acceptance of the Elsimil application using the Technology Acceptance Model approach.
 
Metod: This study uses analytical quantitative research with a cross sectional approach. Primary data obtained from a closed questionnaire, which explores the perceived ease, perceived usefulness, user attitude, and interest in using the Elsimil application. The number of samples was 33 Catin, then the data obtained was analyzed using the Partial Least Square (PLS) method using smartPLS software.
 
Results and Discussion: Based on the results of the analysis, it shows that there is a significant effect of perceived convenience on perceived usefulness (p- value 0.045), effect of perceived convenience on user attitudes (p-value 0.000), effect of perceived usefulness on user attitudes (p-value 0.029), influence between user attitudes on interest (p-value 0.000). and influence between perceived usefulness on interest in using (p-value 0.132) in using the Elsimil application. In conclusion, of the five hypotheses proposed, four of them have a significant effect and one has no significant effect on the use of the Elsimil application.
Domestic Solid Waste Management in Tho Nghiep Commune, Xuan Truong District, Nam Dinh Province: Current Status and Solutions
Authors: Phuong Tran Thi Kim , Hong Tran Thi
Published: March 2024

This article presents research results on the current status and proposes solutions to improve the efficiency of domestic solid waste (DSW) management in Tho Nghiep commune, Xuan Truong district, Nam Dinh province. The survey was conducted for 170 households and the results show that 40.59% of households process a part of DSW by themselves (=equivalently 10.8% of total DSW) while the rest is transferred to the commune's garbage collection team.  The other 59.41% of the households transfer all the solid waste to the commune's waste collection team for treatment at the centralized area. The average volume of DSW released in the whole commune is about 5.5 tons/day, collected with a frequency of three days/week. The collected solid waste is further classified and treated at the commune's incinerator treatment zone by Truong Phat Agricultural Service and Green Environment Cooperative. The environmental assessment of Tho Nghiep DSW treatment area was conducted in November 2022. The results from the incinerator exhaust gas samples showed that four out of five parameters (including SO2, CO, NOx, HCl) are below the allowable standards, only one out of five parameters (Total dust) are higher than the allowable standard of QCVN 61-MT:2016/BTNMT on DSW incinerators. For the surface water samples taken at the southern infield ditch of the incinerator, all eight parameters (pH, BOD5 (at 20oC), COD, TSS, NH4+, NO3-, PO43-, Coliforms) were below permissible standard of QCVN 08-MT:2015/BTNMT on surface water quality. Based on these results, a few proposed solutions have been identified to improve the effectiveness of DSW management in the study area.
Separated or Combined Treatment of Dye Wastewater Streams: A Case Study with Coagulation and Flocculation Process
Authors: Hoang Oanh Le Thi , Le Tran Nhat , Loan Luu Minh , Quan Nguyen Truong
Published: March 2024

This study compared the treatment conditions and efficiencies of the coagulation and flocculation process (CFP) on mixed and separated dye wastewater. The CFP, which employed Poly Aluminium Chloride (PAC) as coagulant and mucilage extracted from the peel of dragon fruit (Hylocereus undatus) (DFPM) as flocculant, was investigated based on Jar-tests. The suitable coagulation and flocculation conditions were found similar at pH (4-7), settling time (30-60 min.), and flocculant dosage (2-5 mg/L) for both type of wastewaters. However, the optimal PAC dosage was determined to be significantly higher for separated dye wastewater stream (330 mg/L PAC) than for the mixed one (260 mg/L PAC) to ensure same treatment efficiencies. The treatment efficiencies were similar for TSS and turbidity of both wastewater types; However, much less for color and COD of separated dye wastewater stream in comparison to those of the mixed one (78% and 68% vs 90% and 76%, respectively). This study provides a scientific basis for the consideration of separated or combined treatment of dye wastewater streams by CFP.
Bioavailability Study of Experimental Push–pull Osmotic Pump Tablet of Nifedipine in Dogs
Authors: Trung Tran Quang , Thanh Hai Nguyen , Van Lau Trinh
Published: March 2024

This study aimed to assess the bioavailability of experimental extended-release nifedipine tablets of push-pull osmotic pump type composed of a semipermeable membrane-coated bilayer core tablet containing PEO N10 and PEO 303 in drug layer and push layer, respectively on dogs. A test on dogs was performed using a two-way randomized crossover design with a single oral dose, fasting condition. Plasma samples were obtained at intervals and analyzed for nifedipine by UPLC-MS/MS after liquid-liquid extraction using glibenclamide as the internal standard. The pharmacokinetic parameters were calculated and the bioavailability of nifedipine extended-release tablets was evaluated by comparing the pharmacokinetic parameters between the prepared extended-release tablets of 30 mg NIF and the reference tablets of Adalat LA 30 mg. It was found that the prepared push-pull osmotic pump tablets of 30 mg nifedipine were equivalent in bioavailability to Adalat LA reference tablets of 30 mg nifedipine in experimental dogs according to the regulations of US-FDA and Vietnamese pharmacopeia 5th edition. The main pharmacokinetic parameters of nifedipine test and reference tablets after a single oral administration were as follows:  Cmax 26.95 ± 7.82 (ng.mL-1) and 27.20 ± 6.99 (ng.mL-1), Tmax 12.33 ± 3.44 hours and 11.50 ± 3.33 hours, AUC0-96 728.96 ± 328.87 (ng.h.mL-1) and 702.48 ± 404.48 (ng.h.mL-1), AUC0-∞, 741.05 ± 340.39 (ng.h.mL-1) and 710.71 ± 408.76 (ng.h.mL-1), MRT 21.80 ± 5.25 hours and 22.06 ± 5.20 hours, respectively. The 90% confidence intervals for the ratio of Cmax, AUC0-∞, and MRT values for the test and reference products, using logarithmically transformed data were 90.82% - 108.09%, 91.97% - 118.21%, 90.74% -107.62%, respectively. No statistically significant difference was found for the Tmax value.
Evaluation of Antiplatelet Aggregation and Anticoagulant Effects of Oxalis Debilis Kunth Rhizome Extracts
Authors: Thi Van Anh Nguyen , Ngoc Trang Nguyen
Published: March 2024

Cardiovascular disease is one of the leading causes of death globally. The discovery and use of natural products in the prevention and treatment of cardiovascular diseases have achieved great interest. Oxalis debilis is traditionally used for the treatment of various ailments.  This study aimed to investigate the potential antiplatelet and anticoagulant properties of extracts derived from O. debilis rhizome. The rhizome of O. debilis was extracted with methanol and then fractionated to obtain four extracts: the total methanol extract, the n-hexane, ethyl acetate, and water fraction. These four extracts were then tested for their ability to inhibit platelet aggregation and blood coagulation in human blood samples. This report demonstrated for the first time that O. debilis had inhibitory effects on platelet aggregation induced by both adenosine diphosphate and collagen as well as blood coagulation. Moreover, the total methanol extract, the ethyl acetate, and the water fraction had strong antiplatelet aggregation effects. All tested extracts had mild anticoagulant activities. This plant could be a valuable natural source for searching for antithrombotic substances, or for the development of supplementary products for the treatment and prevention of heart diseases and thrombosis.
Tinjauan terhadap penyelesaian perselisihan oleh para pihak pada pengadilan hubungan industrial pekanbaru
Authors: Muhammad Andika Rizqi  , Yoga Pamungkas
Published: March 2024

Pada penyelesaian sengketa konflik hubungan industrial, Undang-Undang Nomor 2 Tahun 2004 mengenai Pengadilan Hubungan Industrial mensyaratkan bahwa penyelesaian secara non litigasi merupakan suatu kewajiban yang perlu dipenuhi terlebih dahulu oleh para pihak yang bersengketa. Salah satunya adalah Perundingan Bipartit yang merupakan syarat formil dalam penyelesaian konflik Perselisihan Hubungan Industrial. Ada kalanya proses yang dilalui para pihak yang berperkara tidak sesuai dengan peraturan Perundang-Undangan yang berlaku seperti proses penyelesaian yang dilalui oleh pihak-pihak pada putusan Nomor : 40/Pdt.Sus-PHI/2020/PN Pbr. Maka pokok perrumasalahannya adalah apakah prosedur penyelesaian konflik hubungan industrial antara Sucipto Pardede dengan PT. Artha Prima Finance pada putusan Pengadilan Hubungan Industrial  sudah sesuai dengan peraturan Undang-Undang Nomor 2 Tahun 2004 mengenai Perselisihan Hubungan Industrial dan Undang-Undang di bidang ketenagakerjaan? Dan Apa akibat hukum bagi para pihak setelah dikeluarkannya putusan   Nomor: 40/Pdt.Sus-PHI/2020/PN Pbr? Untuk menjawab permasalahan tersebut dilakukanlah pengkajian secara yuridis normatif terhadap putusan nomor 40/Pdt.Sus-PHI/2020/PN Pbr dan dengan sifat deskriptif. Pada pengolahan data dilakukan secara kualitatif dari sumber data hukum primer,  hukum sekunder dan hukum tersier, sedangkan pengambilan kesimpulan dilakukan dengan menggunakan logika deduktif. Sehingga menghasilkan kesimpulan bahwa para pihak tidak melaksanakan suatu proses yang berifat wajib menurut undang-undang di bidang ketenagakerjaan yaitu perundingan bipartite.
PENGAMANAN ZONA EKONOMI EKSKLUSIF INDONESIA OLEH BADAN KEAMANAN LAUT
Authors: Muhammad Michael Kahfi  , Anto Ismu Budianto
Published: March 2024

Pelaksanaan penegakan kedaulatan dan hukum di perairan Indonesia, dilakukan untuk memelihara keutuhan wilayah perairan Indonesia serta menjaga dan melindungi kepentingan nasional Indonesia di laut. Dengan apa yang terjadi tentang peroalan kewenangan yang dimiliki oleh instansi BAKAMLA terhadap penjagaan Zona Ekonomi Eksklusif Indonesia yang sering kali dilakukan penangkapan illegal oleh kapal nelayan negara asing. Tipe penelitian yang digunakan dalam menjawab masalah tersebut menggunakan penelitian hukum normatif, bersifat deskriptif, data yang digunakan ialah data sekunder dan data primer sebagai pendukung data sekunder yang dianalisis secara kualitatif dan cara pengambilan kesimpulan menggunakan logika deduktif. Permasalahan yang dibawa didalam skripsi ini adalah Bagaimanakah kewenangan yang dimiliki oleh Badan Keamanan laut Indonesia di ZEEI dan Apakah Tindakan yang dilakukan oleh Badan Keamanan Laut Indonesia untuk mengusir kapal coast guard cina dibenarkan oleh konvensi hukum laut internasional 1982. Berdasarkan hasil penelitian dan pembahasan bahwa upaya yang dilakukan dalam penegakan hukum di wilayah laut Indonesia, khususnya BAKAMLA yang dimana menurut UU Nomor 14 Tahun 2014 Mengenai Perikanan bahwa sudah menjadi kewenangan BAKAMLA untuk melakukan patroli keamanan dan keselamatan wilayah perairan Indonesia untuk mengatasi kapal nelayan illegal yang melakukan penangkapan didalam Zona Ekonomi Eksklusif Indonesia
PERLINDUNGAN INVESTOR DALAM PENGHAPUSAN SAHAM PADA LAYANAN URUN DANA BERBASIS TEKNOLOGI INFORMASI
Authors: Febrian Duta Adhiyaksa  , Sharda Abrianti
Published: March 2024

Saat ini Financial Technology sangat berkembang pesart salah satu bentuk Financial Technology yang ada adalah Equity Crowdfunding, yang menjadi opsi baru dalam berinvestasi. Istilah Equity Crowdfunding saat ini sudah berubah menjadi securities crowdfunding (SCF). Dalam SCF saham yang tercatat atau listing dapat juga dihapus pencatatannya (delisting). Rumusan masalah dalam penulisan ini adalah bagaimana perlindungan investor oleh penerbit atas delisting saham PT Mitra Kelola Abadi pada penyelenggaraan layanan Urun Dana Berbasis Teknologi Informasi. Analisis dalam penelitian ini menggunakan jenis penelitian kualitatif dengan pendekatan normatif, mengumpulkan data yang bersumber dari data sekunder yang terdiri dari bahan hukum primer dan sekunder serta disimpulkan dengan metode deduktif. Hasil dari penelitian yang telah dilakukan mengungkap adanya kekurangan dalam aspek perlindungan hukum terhadap investor terkait risiko delisting saham. Terdapat pelanggaran yang teridentifikasi dalam proses buyback saham, di mana pelanggaran tersebut melanggar ketentuan yang ada dalam Pasal 38 Undang-Undang Perseroan Terbatas, karena tidak melibatkan keputusan yang diperoleh dari Rapat Umum Pemegang Saham. Diharapkan ada peraturan khusus yang mengatur proses penghapusan pencatatan saham dalam SCF.
PEMAKNAAN ISTILAH TINDAKAN BERSAMA (CONCERTED ACTION) DALAM PERJANJIAN PENETAPAN HARGA (STUDI PUTUSAN KPPU NOMOR 04/KPPU-I/2016 DAN NOMOR 15/KPPU-I/2019)
Authors: Monica Alina Yolanda  , Anna Maria Tri Anggraini
Published: March 2024

There is no explicit explanation of the term concerted action in Law Number 5 of 1999, but this term is often used by the KPPU to uncover cases of cartels and price fixing. Therefore, it is necessary to raise the issue of how to interpret the term concerted action in price fixing agreements according to Article 5 of Law Number 5 of 1999 and its implementing regulations; and how the KPPU applies the concerted action qualifications in Decision Number 04/KPPU-I/2016 and Number 15/KPPU-I/2019. The study uses a normative method, which is equipped with the result of interviews. The results of research show that the meaning of concerted action in the form of a meeting of minds from business actors is realized in verbal agreements which are followed up with actions aimed at gaining profit. The application of concerted action in KPPU decisions is to contain four (4) elements which include the meeting of mind, a verbal agreement followed by concerted action and changes in market conditions which cause price increases. The KPPU should complete the guidelines by explicitly stating joint actions, and business actors should prepare compliance guidelines as a means of preventing violations of Law Number 5 of 1999
KEWENANGAN GUBERNUR DKI JAKARTA DALAM MENETAPKAN HARGA ECERAN TERTINGGI GAS BERSUBSIDI MENURUT PERATURAN GUBERNUR
Authors: Raja Arviary Rezky Haryono  , Reni Dwi Purnomowati
Published: March 2024

Penetapan dari Harga Eceran Tertinggi Gas LPG merupakan hal yang penting untuk disoroti. Mengingat bahwa HET dari Gas LPG ini penting untuk kelangsungan hidup orang banyak. Penetapan HET di DKI Jakarta dilandaskan pada Peraturan Gubernur saat ini yang dibuat karena amanat dari Permen ESDM mengenai Penyediaan dan Pendistribusian LPG. Namun, pada tahun 2021 Permen ini mengalami perubahan sehingga menjadi suatu permasalah yuridis untuk validitas dan eksistensi dari Pergub yang dikeluarkan pada tahun 2015 ini. Metode yang gunakan dalam penelitian skripsi ini adalah penelitian deskriptif normatif yang akan dianalisis secara kualitatif. Pengambilan kesimpulan yang dipilih penulis adalah pengambilan kesimpulan dengan sudut pandang logika deduktif. Kewenangan Gubernur DKI Jakarta dalam Menetapkan Harga Eceran Tertinggi Gas bersubsidi ditinjau dari Permen ESDM Nomor 28 Tahun 2021 tentang Perubahan atas Permen ESDM Nomor 26 Tahun 2009 Tentang Penyediaan Dan Pendistribusian Liquefied Petroleum Gas. Pemerintah daerah yang diberikan kewenangan untuk membuat peraturan dituangkan kedalam peraturan gubernur. Tentu hal ini menunjukan adanya peran dari gubernur dalam dekonsentrasi Kedua, Implementasi dari Peraturan Gubernur Nomor 4 Tahun 2015 berjalan baik dan efektif. Konsistensi dari pemerintah daerah untuk menjadi pengawas dalam pelaksanaan peraturan mengenai HET gas LPG diharapkan agar tidak ada pihak-pihak yang menjual gas LPG diatas harga HET.
PERAN OMBUDSMAN REPUBLIK INDONESIA DALAM MELAKSANAKAN PENGAWASAN TERHADAP PERALIHAN STATUS ANGGOTA KOMISI PEMBERANTASAN KORUPSI MENJADI PEGAWAI APARATUR SIPIL NEGARA ATAU PEMERINTAH
Authors: Abel Sheva Xavier Istiadi  , Ninuk Wijiningsih
Published: March 2024

Pemerintah Indonesia berupaya membentuk lembaga negara yang berwenang mengawasi penyelenggaraan pelayanan publik. Terbentuklah Ombudsman sebagai lembaga pelayanan publik atas inisiasi Pemerintah melewati Keppres Nomor 44 Tahun 2000 tentang Komisi Ombudsman Nasional untuk menjadi wadah dalam membangun kepercayaan masyarakat melalui pemerintahan yang jujur, bersih, terbuka serta bebas dari KKN agar menciptakan pemerintahan yang efektif dan efisien. Masalah pada penelitian ini berhubungan dengan adanya alih status pegawai KPK menjadi Pegawai ASN. Diduga terjadi maladministrasi dalam proses pengalihan status tersebut. Metode penelitian ini adalah yuridis normatif dengan pendekatan perundang-undangan yang dianalisis secara deskriptif kualitatif. Hasil penelitian menunjukkan bahwa mekanisme mengeluarkan surat rekomendasi yang diberikan kepada Kepala KPK dan Kepala Badan Kepegawaian Negara, Ombudsman RI sudah sesuai dengan tata cara yang diatur oleh aturan hukum terkhusus yang tercantum dalam UU Ombudsman RI.  Ombudsman tidak bisa melakukan tindak lanjut kepada laporan yang tercantum dengan Nomor 625 tahun 2021 terkait temuan maladministrasi dari pelayanan publik. Terkhusus pada kesalahan dari prosedur tindakan asesment pada Tes Wawasan Kebangsaan (TWK) dalam rangka alih status dari pegawai KPK menjadi pegawai ASN. Peralihan ini dituangkan dalam SK yang memiliki Nomor 652 pada tahun 2021. Rekomendasi Ombudsman memiliki muatan yang bertolak belakang dengan apa yang tercantum dalam Putusan MK dengan Nomor 34/PUU-XIX/2021.
Performance of Static Power Allocation in Indoor Room on VLC-NOMA System Using Modulation PPM
Authors: Afifah Syifa Hana , Adriansyah Nachwan Mufti , Pamukti Brian
Published: March 2024

Visible light communication (VLC) is an emerging and promising technology that exploits the visible light spectrum for data transmission. However, one of the major challenges in VLC is how to efficiently allocate the scarce modulation bandwidth to multiple users while avoiding interference and maintaining signal quality. To tackle this challenge, we propose a novel scheme that combines non-orthogonal multiple access (NOMA) with static power allocation (SPA) and pulse position modulation (PPM) in VLC. We conduct simulations in a realistic indoor scenario with a 9x9x3 m room and a single 12-watt LED at the center, using a line of sight (LOS) channel with a field of view (FOV) of 70o. The results show that our scheme achieves superior performance, with user 1 and user 2 obtaining signal-to-interference noise ratio (SINR) values of 20 dB and 74 dB, respectively. Our scheme can effectively overcome the limitations of VLC, such as low data rate, limited coverage area, and high sensitivity to ambient light noise, and pave the way for future VLC applications.
Bottleneck and Rework Analysis of the Budget Approval at University with Process Mining
Authors: Syakurnia Barajati , Bryan Ronald Talisman  , Sahra Bilqis Fauziyyah  , Faturrahman  , Rachmadita Andreswari
Published: March 2024

Process mining is a new science that focuses on the transparency of an existing process. Especially in a world full of digitalization, of course, many companies, education, health are immediately competing in presenting the most efficient and effective processes to do. in this study the authors used Request for Payment data owned by a university. These requests will later be checked by the travel administration, this budget approval can be done by supervisors, directors, or fund owners. the author uses Celonis tools and algorithms in Celonis to identify bottlenecks and rework in the process. We also attempted to analyze where new insights could be drawn from the resulting process model. The result of this research is to pay special attention to several activities, as well as to provide explanations of the criteria related to the application to be submitted.
Sedimentary and stratigraphic architecture of the Duitschland and Rooihoogte formations (Palaeoproterozoic, South Africa): implications for tempo of the Great Oxidation Event
Authors: Beukes N.J. , Schröder S.
Published: March 2024

Determining the tempo and causality of key palaeoclimate events recorded in sedimentary strata depends on high-resolution numerical ages and well-constrained stratigraphic correlations at regional and global scale. This requirement is not necessarily met in Precambrian strata due to poorer age resolution, limited preservation, and secondary overprints. A good example includes the Palaeoproterozoic Rooihoogte and Duitschland formations in South Africa, which document the disappearance of mass-independent fractionation of sulphur isotopes (MIF-S) and contain glacial diamictites at their base. They are thus key records of Earth’s surface oxygenation during the Great Oxidation Event (GOE). However, previous studies have either correlated these units, resulting in a unidirectional oxidation trend; or have regarded them as successive strata, causing an interpretation of oscillating oxidation. This study uses extensive outcrop and new core material to investigate correlation between these two units, and to establish depositional models. Results show that key stratigraphic markers can be traced around the entire Kaapvaal craton both in outcrop and the subsurface. In particular, the basal Bevets breccia and the top Duitschland breccia are here re-interpreted as two separate units that are present at the base and top of both formations, supporting correlation of the formations. Consequently, the base of both formations records a major craton-wide event of uplift and karstification, leading to carbonate dissolution and chert brecciation. Erosion of older rocks from across the craton also delivered material for the basal glacial diamictite. The majority of mixed siliciclastic-carbonate sediments were deposited on a storm- and/or delta-influenced shelf. Depositional packages in both formations reflect post-glacial relative sea level rise, followed by progradation of a deltaic, storm or shoreline depositional system. There is a relatively short-lived depositional hiatus to overlying shales of the Timeball Hill Formation. Both Rooihoogte and Duitschland formations thus record only a single glacial event at their base, and a unidirectional trend of oxidation.
One of a Kind BHA Design for ERD Wells in Bahrain
Authors: Moncayo Sergio , Szlapa Sandra , Zayed Zeyad , AlJanahi Ahmed , Abdelrady Sayed
Published: March 2024

An innovative BHA was designed to fit slim extended reach wellbore profiles. Precise BHA design was essential to reach the bottom of the well with a scrapper and circulate to clean the hole efficiently for enabling fracking operations with Plug & Perf technology to be performed in extended reach horizontal wells in Bahrain.

Plug & Perf operations for multistage fracking required to run plugs through a cased extended horizontal section with an internal diameter of 4" to isolate the different stages to be stimulated. The max OD of the plug was 3.625 in leaving a marginal clearance between the plug and the casing, making hole cleaning the primary risk to deal with.

For hole cleaning it was important to design the slim BHA with a maximum OD of 3.125 in and ensure reaching bottom. Torque & drag simulations were run using Extended Reach Architect software specialized for drilling ERD wells. This innovative use of the program required creating a fictional section in the well schematic where the new BHA design was simulated. During the execution phase, the simulations proved their accuracy while pointing out the depths where the string weight is lost, and a change in pipe diameter and weight is crucial to continue running in hole.

This unconventional BHA design met not only the technical requirements, but also the logistics challenges coming from the current working pipe inventory. The team looked for alternatives by designing several BHA scenarios, changing the position, amount, weight, and diameter of pipes to be used.

Innovation and accurately applied well engineering created a BHA design process that unlocked the possibility to perform the completion operations of ERD horizontal wells. Ultimately 6 ERD wells were successfully prepared for fracking operations. The implementation of this BHA design workflow decreased the number of clean out runs from 5 attempts to 1 successful run in every well, therefore reducing the operational time by 12 days per well, in overall saving 75 days. Helping to bring oil production faster in Bahrain.