bluuebunny/crossref_metadata_2025 huggingface dataset:
Nghiên cứu sử dụng polyme in dấu phân tử trên các chấm lượng tử carbon làm cảm biến huỳnh quang xác định naproxen
Authors: Nguyen Dinh Thi , Tran Dong Duong , Tran Ngoc Bich , Pham Thi Ngoc Mai
Published: April 2024

In this study, CQDs-SiO2@MIP fluorescence sensor was fabricated via sol-gel polymerization using naproxen as the template molecule, carbon quantum dots (CQDs) as the signal materials, 3-aminopropyltriethoxysilane (APTES) as the functional monomer, and tetraethylorthosilicate (TEOS) as the cross-linker. The specific recognition sites in the polymer layers could selectively adsorb naproxen molecules, which caused fluorescence-quenching behavior of CQDs via an electron transfer process. The CQDs-SiO2@MIP system can detect naproxen in aqueous solution (pH 4.0; Acetate buffer 0.04M) sensitively (ppb level) with a response time of 15 min. The results show that the fluorescence recovery has a good linear relationship with Naproxen concentration in the range of 10-7 M to 1.5 10-7 M. Method has very low limit of detection (LOD) of 5 10-8M (11 ppb), limit of quantitation (LOQ) of 1.5 10-7M (34 ppb), high accuracy (recoveries > 96%) and high precision (RSD < 3%). Method has high selectivity over various substances such as K+, Mg2+, Ca2+, Zn2+, glucose, piroxicam, acid mefenamic,… The developed method was successfully applied for determination of naproxen in pharmaceutical samples. Good agreement between results of our method and LC-MS/MS method suggest that fluorescence is a reliable and cost-effective method for naproxen determination.
Nghiên cứu độc tính cấp và độc tính bán trường diễn của viên nang cứng Định Thống Phong trên động vật thực nghiệm
Authors: Tran Thanh Tuan , Dao Nguyen Manh , Quach Thi Quynh , Vu Ngoc Thang , Nguyen Hai Duong
Published: April 2024

Research to evaluate acute toxicity and sub-chronic toxicity of Dinh Thong Phong capsule (DTP) in experimental animals. Acute toxicity was evaluated in mice follow the method described by Litchfield- Wilcoxon, the OECD guideline and the guideline of Ministry of Health of Vietnam; sub-chronic toxicity was evaluated in rats according to OECD 407 Guideline. In acute toxicity study, no death or toxic signs were observed with DTP capsule administration, DTP capsule did not exhibit acute toxicity up to a dose of 4800 mg/kg. In sub-chronic toxicity, DTP capsule at doses of 500 mg/kg and 1500 mg/kg were had not affect to the body weight; some hematological parameters; AST, ALT, albumin, total cholesterol and creatinine levels; and macroscopic, microscopic images of liver, spleen and kidney of rats when taken continuously for 56 days.
Implementation of Consumer Personal Data Protection in Ecommerce from the Perspective of Law No. 27 of 2022
Authors: Ahyar Wiraguna Sidi , Sulaiman Abdullah , Barthos Megawati
Published: April 2024

This research aims to analyze the implementation of the Personal Data Protection Law (PDP Law) No. 27 of 2022 in the e-commerce sector in Indonesia, with a focus on consumer data protection. The method used is normative juridical, focusing on analyzing relevant documents and regulations to outline the legal framework and its application in e-commerce practices. Sources of legal materials include laws and regulations, academic literature, and interviews with legal experts and e-commerce practitioners. The results show that e-commerce companies have made significant adjustments to comply with the PDP Law, including improved privacy policies and investments in data security technologies. However, challenges to the full implementation of the PDP Law remain, particularly regarding consumers' and companies' awareness and understanding of the rights and obligations stipulated in the PDP Law. While there has been an increase in consumer trust in e-commerce platforms, increasing consumer awareness and active participation in the protection of their data still requires further efforts. The implication of this study is that the PDP Law No. 27 of 2022 has provided a stronger and more comprehensive legal framework for consumer data protection in Indonesia's e-commerce sector. However, to maximize the effectiveness of this law, a concerted effort is needed between regulators, the e-commerce industry, and the wider public to improve education and awareness of personal data protection, as well as ongoing adjustments to data management practices by e-commerce companies.
Political Dynamics in the Selection of Judges of the Constitutional Court of Indonesia: A Critical Analysis of Integrity and Independence
Authors: Taufan Soedirjo Achmad , Santiago Faisal
Published: April 2024

This study aims to examine the influence of political dynamics on the selection process of Constitutional Court (MK) judges in Indonesia and its implications for the integrity and independence of the institution. The research method used is the normative juridical method with reference to Law No. 24/2003 on the Constitutional Court as amended by Law No. 7/2020. Analysis was conducted on relevant regulations and legal documents through literature studies and interviews with legal experts. The results show that in the selection of Constitutional Court judges, political factors often dominate over the principle of meritocracy, which threatens the principle of constitutional justice and reduces public trust in the Constitutional Court. The findings highlight the urgent need for transparency and accountability in the selection process of judges to strengthen the integrity and independence of the Constitutional Court. A transparent selection process will allow the public to understand and assess the process, while accountability will ensure that the selection of judges is based on objective criteria. The implication of this research is the need to strengthen public oversight mechanisms to maintain the Constitutional Court as a guardian of the constitution with integrity and independence. These measures are also expected to strengthen public trust and constitutional justice in Indonesia.
The Rhetoric of Kairos: Paul Tillich’s Reinterpretation
Authors: Earle Elizabeth R. ,   Religious Communication Association
Published: April 2024

In 20th century Germany, theologian Paul Tillich witnessed the religious and political crises of his time, and he recognized the need for action at the appropriate time. Out of this rhetorical situation, he adopted the classical concept of kairos, which permeated his life and work. I argue that Tillich’s notion of kairos presents three new dimensions: the existential, the demonic, and the extension of the present into the future. Although he believed that his work only spoke to the “kairos of his time,” Tillich continues to address us today, urging us to seize the kairos of our own time, and challenging rhetorical theorists to rethink the notion of kairos.
Recognizing the Imago Dei in Employee Publics
Authors: McCown Nance ,   Religious Communication Association
Published: April 2024

This article reviews several converging scholarship fields—internal communication, leadership, and workplace culture—coupled with the biblical principle of the imago dei (people’s intrinsic value stemming from being made in God’s image) to offer two propositions. First, Christian public relations scholars/faculty can integrate their faith into their research, grounding their understanding and practice of “excellent” public relations in the concept of imago dei; they can also equip their students to approach their learning and future practice of public relations in the same way. Second, Christian public relations practitioners basing their work in the imago dei concept can help their organizations reap associated relational and productivity outcomes through encouraging particular leadership strategies, practicing “excellent” internal public relations, and fostering an employee-valuing workplace culture.
The Important Role of Fluid Mechanics in the Engineering Field
Authors: Zhang Yining , Xie Yifan , Zhao Guanyixuan , Liang Zhengjie , Shi Jingdong , Yang Yang
Published: April 2024

Fluid mechanics, a fundamental discipline within engineering, has gained increasing significance across various fields due to continuous advancements in engineering science and technology. Its principles and methodologies find widespread application in aerospace, energy development, environmental protection, biomedicine, and beyond, serving as a cornerstone for technological progress. However, despite the expanding applications of fluid dynamics, challenges persist in integrating theory with practice in certain domains. This paper aims to synthesize exemplary applications of fluid mechanics in diverse engineering fields, illustrating its crucial role in addressing practical challenges. Additionally, it explores current problems and limitations in fluid dynamics applications, such as numerical simulation accuracy, multiphase flow complexity, and fluid-structure interaction nonlinearity. Furthermore, recommendations are provided for future fluid mechanics development, emphasizing interdisciplinary collaboration, advanced computational methods, and the seamless integration of experimental techniques and theoretical research. Through these discussions, this paper endeavors to offer insights into the ongoing development of fluid mechanics, fostering its broader application and deeper exploration within engineering disciplines.
Smart City Development: Challenges and Opportunities in Europ
Authors: Müller Sofia , Rossi Giorgio , Ivanova Viktoriya
Published: April 2024

This paper aims to explore the challenges and opportunities of smart city development in European cities. Through an analysis of the concept of smart cities, their characteristics, and their applications in different European contexts, the importance of smart city development for sustainable urban development in Europe is elucidated. Moreover, the paper discusses the potential challenges in smart city development, such as technological, privacy, and security concerns, and explores strategies to overcome these challenges to achieve smart and sustainable urban development in Europe.
The Need for Gynecological Ultrasound Examination on IUD Acceptors
Authors: Admardiarto Hesa Kusuma , Nurdiawan Windi
Published: April 2024

Maternal Mortality Rate (MMR) signifies the number of women who perish due to pregnancy-related complications or their treatment per 100,000 live births, with septic shock emerging as a notable contributor. One such complication linked to septic shock is the rare but perilous translocation of intrauterine devices (IUDs), leading to potential uterine perforation. A recent case of maternal death underscored the urgency of prompt intervention in intraabdominal IUD translocations, with the delay stemming from the refusal of necessary surgical procedures. This tragic incident emphasizes the critical need for timely detection and management of IUD translocations to avert life-threatening complications. Integrating routine gynecological ultrasound examinations to assess uterine shape for prospective IUD acceptors and promoting informed consent through engagement with family members, community leaders, and policymakers is essential in mitigating the risk of maternal mortality associated with such complications.
SLOGANLARLA İSLAMCILIK: ŞÛRÂ DERGİSİNDE SİYASAL İDEOLOJİYİ SLOGANLARDAN OKUMAK
Authors: Şahin Selin , Şahin Enes
Published: April 2024

Modern dönemde siyasal ve toplumsal yapıların değişmesi, ulus devletlerin ve demokratik rejimlerin dünya çapında yaygınlık kazanması toplumu yönetilen pozisyonundan siyasal karar verici pozisyonuna intikal ettirmiştir. Bu durum toplumun her kesiminin siyasal meseleler hakkında bilgi sahibi olmasını zarurî hale getirmiştir. Bu konuların felsefî ve sosyolojik derinliği olan meseleler olması toplumların yeni siyasal yöntemleri benimsemesi için farklı öğretim ve iletişim tarzlarının ortaya çıkmasına sebep olmuştur. Ayrıca farklı siyasal ideolojileri savunan siyasal gruplar da fikirlerini toplumun her kesimine aktarmak için bu arayışa dahil olmuşlardır. Bahsi geçen arayışların neticesi olarak ortaya çıkan unsurlardan biri sloganlardır. Sloganların belli bir siyasal fikir ya da ideolojinin temel kabullerini, anahtar kavramlarla ve kolay akılda kalacak şekilde sunması devletler ve siyasal grupların sloganları sıkça kullanmasına sebebiyet vermiştir. Sloganları siyasal zihniyetlerini aktarma hususunda kullanan unsurlardan biri de İslamcı düşüncenin müntesipleri olmuştur. Bu doğrultuda Türkiye’de İslamcı düşüncenin 1970’lerdeki temel gerilimlerinin sloganlar etrafında ele alınmasının amaçlandığı çalışmada Şûrâ dergisinin kırk bir sayısında, sayfaların üst kısmında yer verilen sloganlar söylem analizi yöntemi ile incelenmiştir. Çalışmada elde edilen sonuç Şûrâ dergisinin dinî açıdan literalist ve dışlayıcı, toplumsal açıdan ötekileştirici ve siyasal açıdan devrimci bir söyleme sahip olduğu, dergideki sloganların bu anlayışları özetleme ve aktarma amacıyla kullanıldığı olmuştur.
Educational Enrichment Beyond Academics: Investigating the Impact of Co-Curricular Activities on Cognitive Abilities, Motivation, and Managerial Skills in Students
Authors: Shakil Muhammad Haseeb , Mukarram Muhammad , Wilson Ronica Wilbon , Tayyab Mishal
Published: April 2024

The study delves into the impact of co-curricular activities on students’ cognitive abilities, academic performance, and managerial skills, emphasising the distinction between externally and internally focused learning. It underscores the pivotal role of cognitive abilities, intrinsic motivation, and Asian cultural values in student success. Managerial skills are identified as crucial for future career readiness, aligning with leadership development. Despite the emphasis on academic achievements, the study argues for the necessity of co-curricular activities for holistic student development. Addressing a research gap, the research quantifies the specific influence of these activities on cognitive abilities, motivation, leadership, and academic outcomes. A longitudinal study involving 2,000 students utilised action research, implementing a “Principle of Management” course with real-life projects. The cyclic nature of planning, implementation, evaluation, and adaptation aligns with action research principles. Findings challenge prescriptive strategies, advocating for descriptive strategies in managing 21st-century challenges. The study concludes that co-curricular activities significantly enhance learning capabilities, recommending an integrated approach for educational institutions and policymakers. The study also stresses diverse activities, intentional learning objectives, communication, inclusivity, as well as a balance between academics and extracurricular pursuits for comprehensive student success.
Lecturers’ Well-Being in Malaysia during the COVID-19 Pandemic: A Retrospective Study
Authors: Anda Wang , Tay Pey Lin
Published: April 2024

The recent COVID-19 pandemic inflicted wide-ranging impacts on all sectors globally. Malaysia was no exception. The purpose of this retrospective study is to explore the well-being status of Malaysian university lecturers who conducted online teaching activities during the pandemic and the effective coping strategies they adopted to maintain their wellbeing. This study adopted a phenomenological approach and collected qualitative data from five lecturers of a private university in Selangor through structured interviews over a period of four weeks. The findings of the study imply that the participants embraced a state of sustained positivity and high resilience during the COVID-19 pandemic. Participants collectively stated that the positive factors that improved their happiness during the pandemic were the effective application of new teaching technologies in online teaching, frequent social interactions with colleagues, and high student engagement in class. Based on findings, higher education institutions should support lecturers in meeting three significant needs: strong self-confidence and high adaptability, overcoming burnout and high pressure and improving the quality of teaching.
Research Map on Marketing Law Studies Based on Scopus Database
Authors: Kartikawati Dwi Ratna , Uula Mimma Maripatul
Published: April 2024

This study aims to see the development of research on the topic of "Marketing Law" and research plans that can be carried out based on journals published on the theme. This research uses a qualitative method with a bibliometric analysis approach. The data used is secondary data with the theme "Marketing Law" which comes from the Scopus database with a total of 192 journal articles. Then, the data is processed and analyzed using the VosViewer application with the aim of knowing the bibliometric map of "Marketing Law" research development in the world. The results of the study found that in bibliometric author mapping, the authors who published the most research with the theme "Marketing Law" were Petty R. D; Yahelson Y; Pressey A. D; Renke S.; Steennot R; and Shimpock-Vieweg K. Furthermore, based on bibliometric keyword mapping, there are 3 clusters with the most used words are legislation, product, ambush marketing, strategy, change, and implementation. Then, the research path topics related to marketing law are Future trends in marketing law, Legal implications of brand advertising and EU law and ambush marketing.
Implementasi Theory of Planned Behavior terhadap Eksistensi Keberadaan Pedagang Pasar Terapung Lok Baintan
Authors: Ul Huda Isra , Melania Melania , Amrullah Amrullah
Published: April 2024

Implementasi Theory of Planned Behavior Terhadap Eksistensi  Keberadaan Pedagang Pasar Terapung Lok Baintan Kabupaten Banjar Provinsi Kalimantan Selatan. Tujuan pada penelitian ini yaitu untuk mengetahui Implementasi Theory of Planned Behavior Terhadap Eksistensi Keberadaan Pedagang Pasar Terapung Lok Baintan Kabupaten Banjar Provinsi Kalimantan Selatan. Jenis penelitian yang digunakan oleh peneliti adalah kualitatif deskriptif. Aktivitas dalam analisis meliputi reduksi data (data reduction), penyajian data (data display) serta Penarikan kesimpulan dan verifikasi (conclusion drawing/ verification). Dari Hasil penelitian menyatakan Tantangan, dalam menjalankan aktifitas sebagai pedagang pasar terapung ada 2 faktor: yang pertama, faktor alam. Faktor alam ini meliputi; hujan ketika hujan turun akan membuat barang dagangan basah kuyub bahkan rusak, banjir mengakibatkan sampah kayu bisa mengebabkan perahu/jukung terbalik, sampah enceng gondok/ilung menyulitkan jalannya perahu/jukung. Tantangan yang kedua, faktor manusia. Yang dimaksud disini adalah, tantangan tersebut dari rekan kerja/pedagang pasar terpung ini sendiri, Keluarga, memberikan dukungan dan mendorong untuk menjadi pedagang pasar terapung. Berbagai hal yang dilakukan keluarga dalam mendorong untuk menjadi pedagang pasar terapung salah satunya yaitu dengan ikut mempersiapkan/belanja barang belanjaan yang akan di jual di pasar terapung, Kemudahan, yang dirasakan yaitu adanya latar belakang keluarga yang merupakan pedagang pasar terapung dulunya.
Designing User Interface Of Travel Mobile Application Based On Artificial Intelligence
Authors: Teo Indrawan Nielson , Lukitasari Evelyne Henny , Anwar Ahmad Khoirul
Published: April 2024

Indonesia is a country with many potential places that can be used as tourist destinations. The Central Statistics Agency (BPS) states that as of 2021 Indonesia has a total of 2,552 destinations in the tourism industry. The development of the tourism industry in Indonesia was hampered by the pandemic that had hit the country for approximately 2 years, which caused a narrow space for tourists to move. On the other hand, the use of digital technology has increased during the pandemic era. Artificial intelligence is one of the technologies that also developed during the pandemic. This technology allows for a program to think like a human and help facilitate daily activities and work. This design has the aim of creating an application display design that can implement artificial intelligence in a mobile application for the needs of the tourism industry. The method used in this design is the Design Thinking method popularized by Kelley and Brown from IDEO, consisting of the Emphatize, Define, Ideate, Prototype, and Testing stages. The result of this design is a design of a mobile application interface for the tourism industry, with the implementation of artificial intelligence and various features, and contains information about various tourist destinations, as well as designing its trials easily by users.
Lobbying and/or trading in influence
Authors: Vidović Srđana
Published: April 2024

In this article, the author discusses the relatively new Lobbying Act that was enacted in the Republic of Serbia in 2019. According to the author's point of view, this Act is not in alignment with the Criminal Code, and the necessary amendments to the Criminal Code have not been made following the adoption of the Lobbying Act. Lobbying essentially involves attempting to influence government authorities to pass laws and perform other actions within their jurisdiction in exchange for appropriate compensation. On the other hand, the basic form of committing the criminal act of trading in influence is realized by making requests or receiving gifts or other benefits with the intent to mediate in performing an official act, utilizing one's official or social position or influence, which can be real or presumed. It is evident that lobbying and trading in influence overlap, which raises the question of whether a lobbyist, during the act of lobbying, is effectively involved in trading in influence or if the Lobbying Act decriminalizes trading in influence. According to the author, trading in influence is a broader concept than lobbying. This is because lobbying includes only influencing government authorities to pass laws, while trading in influence can be related to any authority, such as the police, administrative authorities, etc. This is why the Lobbying Act did not decriminalize trading in influence in general. However, the fact is that the lobbyist, according to positive legislation, is in danger of committing a criminal offense, so a change in the Criminal Code is necessary. The legislative body needs to amend the Criminal Code accordingly. It should be stipulated that a lobbyist who acts in accordance with the Lobbying Act does not commit a criminal offense. Additionally, the Lobbying Act needs to be revised. The question is - is it necessary to have registered lobbyists and non-registered lobbyists? The Lobbying Act should only prescribe registered lobbyists.
Traumatic brain injuries in sport: A systematic review
Authors: Popović Ilić , Popović Ivan
Published: April 2024

Head injuries are a frequent occurrence in various sports activities. Collision and contact sports carry the highest incidence risk of these types of injuries. Within head injuries pathology, traumatic brain injuries are considered the most dangerous, primarily because of the threat to vital centers. Precise, quick diagnosis, adequate therapy, as well as removing the athlete from the field until the symptoms subside can reduce the intensity of neurodegenerative disorders accompanied by short-term or long-term neurological, vegetative, cognitive and motor deficits. This study analyses the trends of proposed measures that need to be taken in sports primarily in terms of prevention and diagnostics, in order to prevent and mitigate the consequences of head injuries, especially in younger categories of athletes. Changing the rules of the game, controlled and limited heading in football, as well as mandatory wearing of protective equipment in all potentially risk sport activities are some of the proposed measures in reviewed researches.
Clustering based on the archetypal analysis
Authors: Stehlíková Beáta
Published: April 2024

Archetypal analysis is a dimensionality reduction technique, which is based on finding a small number of representative elements, called archetypes. The observations are then approximated by convex combinations of the archetypes. The coefficients of the convex combinations can be therefore interpreted as probabilities of discrete random variables. The values of the variables identify the classes, represented by the archetypes, to which the observation belongs. Based on this interpretation, we propose to use the Hellinger distance between probability distributions to measure the distance between the observations in the dataset and to use it as an input to clustering. We apply this procedure to monthly data of zero-coupon yield curves in 2003-2022. We identify the archetypal yield curves and cluster the observed curves into six clusters. Since the observations are measured in time, the resulting clustering also gives a segmentation of the time period under consideration.
The impact of media digitalization on political communication in Serbia
Authors: Belačić Aleksandra , Alčaković Slavko
Published: April 2024

Success in the political power game is all about how political parties get their messages across to voters, and lately, it's become a significant issue because technological advances have turned the old one-way communication into a two-way discussion on the internet. The concept at the back of this work was to explore the mere development of the shift in attention from traditional to digital media within the political context, highlighting that this phenomenon is often ignored, as authors, due to the rapid development of the internet, have a tendency to presuppose electorate's inclination to acquire political information mainly via digital channels. Drawing such a premature and simplified conclusion is not justified because despite the surging use of digital media, traditional media such as radio and television still have a good number of adherents, so they also play a role in political dynamics. To determine the extent to which digital media have succeeded in becoming substitutes for traditional ones, we conducted research on the political information consumption preferences of Serbian voters. The research was based on the initial hypothesis that contemporary political communication should be executed mainly digitally. The survey participants responded to a series of questions related to their habits related to political news intake from various traditional media and their digital equivalents. Quantitative analysis of responses was conducted using version 26 of the SPSS software. Following this, a qualitative analysis was carried out, convincing the authors to accept the hypothesis, as the results showed that the sample leans towards the preference for digital media in the context of political information gathering. However, said preference is not overly pronounced, considering that traditional media still enjoy a significant level of popularity.
Numerical analysis of the shock train in conical nozzles with straight-cut throats
Authors: Tolentino San , Mírez Jorge , Caraballo Simón
Published: April 2024

The overexpanded flow regime in supersonic rocket engine nozzles presents different shock wave structures due to the geometrical configurations of the internal walls. In the present investigation, the study of the shock train phenomenon is addressed for a group of convergentdivergent conical nozzles with straight-cut throats for the overexpanded flow condition for NPR=12. The viscous and compressible flow field under stationary conditions is simulated with the RANS model in the ANSYSFluent R16.2 code, which applies the finite volume method (FVM) to discretize the computational domain. The Spalart-Allmaras turbulence model is used, and Sutherland's law is used for the viscosity as a function of temperature. The results show that, in the straight-cut throat section, as its length increases, the flow accelerates and decelerates with the presence of oblique shocks, which forms a definite shock train structure, where the flow velocity fluctuations are within the estimated Mach number range of 0.6 to 1.8. Increasing the throat length significantly affects the flow development at the nozzle outlet, which decreases the thrust force.
Spare parts stock management: Classification and policy assignment
Authors: Teixeira Catarina , Lopes Isabel , Figueiredo Manuel
Published: April 2024

Spare parts management is a maintenance management function that aims to support maintenance activities. It intends to provide real-time information about the available quantities for each spare part and to adopt stock management policies that assure its availability at the lowest possible cost. This paper proposes a methodology for the stock management of spare parts that aims to assign stock management policies to each spare part in an industrial plant. Five groups and five associated stock management policies were defined. Considering that the policy to be allocated depends strongly on the characteristics of demand, two of the groups are intended for generic spare parts, and the other three for specific spare parts. The definition of the groups and the assignment method took into account the associated stock management policy, which in turn took into account the characteristics of the demand for the associated parts. A case study carried out in a manufacturing company that produces electronic systems for the automotive sector showed that the developed methodology allows, simply and intuitively, the assignment of policies that balance the cost of a part being out of stock and the cost of keeping it in stock, thus minimizing total cost.
TRIZ effect exploitation on engineering students thinking skills in product design
Authors: Hmina K. , Allouch A. , Bouyarmane H. , El Amine , Sallaou M.
Published: April 2024

Product design is a creative and multidisciplinary activity that often necessitates the application of analytical and innovative support tools to enhance the concept research phase and solutions development. The TRIZ theory, a highly effective innovation method, has demonstrated its efficacy in supporting innovation across various fields. In this context, our focus has been on integrating TRIZ into the product design process involving engineering designers. This article provides a descriptive and critically assessed evaluation of the operational impact of TRIZ on the design activity, specifically in the development of a "Wastewater Screening and Filtration System" during the preliminary design phases. The objective of this research is to assess the influence of TRIZ utilization on the engineering designers' ability to address a design problem. The ultimate goal is to establish an innovative design support approach based on the use of TRIZ tools that is easily comprehensible and applicable to future designers. Within this article, we present both quantitative and qualitative results of the exploitation of TRIZ tools combined with an energy analysis of the requirement in the product design field.
Investigations on MIT and Lyapunov rule-based modified MRAC for noninteracting and interacting two-tank coupled systems
Authors: Gupta Dhananjay , Kumar Awadhesh , Kumar Giri
Published: April 2024

The adaptive control method is a technique that measures the dynamic characteristics of the plant automatically and continuously to make a comparison with its required output. It utilizes the difference between plant output and reference output to compute adaptable system parameters to maintain optimal performance regardless of the system variations. The behavior of the adaptation rule is significantly affected by the adaptation gain value. This paper describes the design of MIT (Massachusetts Institute of Technology) and Lyapunov rule-based modified Model Reference Adaptative Controller (MRAC) to stabilize a non-interacting and interacting two-tank process system. Investigation of variation in adaptation gain has also been done. Initially, a traditional MIT and Lyapunov rule-based MRAC is designed to stabilize the non-interacting and interacting tow-tank coupled system and it is found that both the systems are stable only for a few values of adaptation gain. To overcome this problem the modified MRAC is planned to stabilize and improve the response of the system. The modified MRAC scheme is just the PD (Proportional Derivative) controller superimposed on the MRAC control method. Now with the modified MRAC, the systems have been stabilized and their response has been improved for the wide range of adaptation gains. The comparative analysis of traditional and modified MRAC has also been presented. The performance analysis in terms of rise time, settling time, and peak overshoot has been carried out by comparing the results obtained for all the mentioned rules with the variations in the adaptation gain, on the MATLAB/Simulink platform. The obtained results present encouraging outcomes.
Prohibition of market abuse: European law and the law of the Republic of Serbia
Authors: Kovačević Maja , Brkić Ivana , Gardašević-Živanov Jovana
Published: April 2024

Market abuse encompasses trading based on insider information and market manipulation. Such unfair market activities can endanger the entire market and, in their most intense and most pronounced form, seriously disrupt market dynamics, conferring undue advantages to certain participants, thus undermining principles of fair competition. Therefore, when defining legal regulations in the field of market abuse prohibition in a country, understanding the morphology of the market is crucial. It is important to consider both positive and negative consequences for the country's market economy, if the goal is to form a transparent, integrated and efficient market, which would be attractive to investors based on such characteristics and thereby contribute to the economic growth and development of the country. The Republic of Serbia still lacks sufficiently developed mechanisms and appropriate legal solutions necessary for the functioning of a market economy, but its advantage lies in the model, experience, and judicial practice of developed markets within the member states of the European Union.
Mapping based on open data sources in digital form
Authors: Stojanović Marko
Published: April 2024

Mapping based on open data sources in digital form represents a revolution in geoinformatics science and practice. Traditionally, the mapping approach required significant material resources and expertise to create accurate and up-to-date maps. With the development of geographic information systems (GIS) and an increasing number of websites that provide free access to a huge volume of geospatial information, this way of mapping is becoming more and more present. Open data sources, often free or at low cost, support the download or use of global geospatial data. This enabled the spread of geographical knowledge and skills at a much higher level, including individuals, organizations and social communities. Open data sources provide new mapping opportunities, enabling better understanding and solving complex problems in different fields. The paper systematizes knowledge and techniques from this area and, on the example of the Military Geographical Institute, shows the need for both the use and sharing of such data.
A technique for reducing supersonic transient loads on internal wind tunnel balances
Authors: Vuković Đorđe , Damljanović Dijana
Published: April 2024

Design of slender supersonic missiles requires a comprehensive experimental support in the form of wind tunnel data for a wide range of flight parameters (angle of attack and Mach number). However, in supersonic wind tunnel testing, the problem exists of transient loads at the times of the starting and stopping of the supersonic flow. In the environments of pronounced transient loads, characteristic of blowdowin wind tunnels like the T-38 of the Military technical Institute in Belgrade, it is necessary to provide control of the use of internal wind tunnel balances in the permitted design load ranges. The presented technique is related to the definition and implementation of a methodology for reducing the transient loads on wind tunnel balances in supersonic wind tunnel tests. By limiting the clearance between the model and its tail support (sting) to a magnitude which permits normal tests, but results in model-support contact during the excessive loads, part of the loads is transferred to the support sting, relieving the balance. The technique improves control over the wind tunnel test process, improves measurement accuracy and prevents damage to sensitive instrumentation (wind tunnel balances).
Sentiment Analysis of the Sheikh Zayed Grand Mosque’s Visitor Reviews on Google Maps Using the VADER Method
Authors: Elinda Elinda , Yuliansyah Herman , Latiffi Muhammad Iqbal Abu
Published: April 2024

The Sheikh Zayed Grand Mosque in Solo is a replica of the Zayed Grand Mosque in Abu Dhabi. Many people have provided reviews on Google Maps after visiting the mosque. This research aims to determine the sentiment results regarding visitors’ reviews by developing a sentiment analysis model using a combination of the Valance Aware Dictionary for Sentiment Reasoning (VADER) and Deep Translator methods. This research was conducted in two phases. The first phase proposed a sentiment analysis model using VADER and Deep-Translator with public datasets. Later, the resulting sentiment analysis model was applied in the second phase to analyze the dataset of mosque visitor reviews and determine public perceptions. This research compares two preprocessing models (PPTV1 and PPTV2) and continues with the translation and sentiment prediction processes. The evaluation results show the proposed model (PPTV2) achieved the best average accuracy values of 72%, precision of 83%, recall of 72%, and F1-Score of 75% for the three examined datasets. The results of visitor review sentiment obtained showed 83.3% positive, 9.5% neutral, and 7.2% negative. The analysis findings show that people are amazed by the beauty and majesty of the mosque. However, some people provide negative reviews of the mosque’s facilities.
Detección de dióxido de carbono para la cuantificación de carbono orgánico del suelo
Authors: Gonzales Sánchez Pedro Antonio , Castillo SantaMaría Bessy , Ríos López Carlos Armando , Vásquez Ramírez Guillermo , Arévalo Gardini Enrique , Alvarado Ramírez Jaime Walter
Published: April 2024

El sistema de red telemática de detección de CO2, para el proceso de cuantificación de carbono orgánico del suelo en la Región San Martín; busca mejorar el proceso de cuantificación de carbono orgánico del suelo mediante un sistema de red telemática de detección de CO2. La metodología, se diseña e implementa una red telemática con arquitectura de red Ethernet, permitiendo monitorear lo diferentes parámetros de los sensores, en el proceso de detección del CO2 y diseñando una cámara de captura de CO2 que al ponerlo en funcionamiento se obtuvieron valores de partículas por millón (ppm) de CO2. Resultados, siendo el promedio de tiempo de disponibilidad de información de 838,33 segundos y un promedio de área bajo la curva del CO2 capturado del 98 210 ppm2. Así mismo, se midió el grupo control en el laboratorio de suelos de la Universidad Nacional de San Martin, donde se obtuvo el tiempo promedio de cuantificación es de 126 horas, arrojando un porcentaje promedio de carbono orgánico del suelo de 0,69; para el grupo experimental, producido por sistema de red telemática de detección de CO2, el tiempo promedio de cuantificación es de 0,32 horas, arrojando un porcentaje promedio de carbono orgánico del suelo de 0,69. Por lo que se concluye que el uso del sistema de detección CO2 en red, se mejorará el proceso de cuantificación de carbono orgánico del suelo en la Región San Martín.
KẾT QUẢ PHỤC HỒI CHỨC NĂNG CỘT SỐNG BẰNG CHƯƠNG TRÌNH TẬP CS-A15 TRÊN BỆNH NHÂN THOÁT VỊ ĐĨA ĐỆM CỘT SỐNG THẮT LƯNG
Authors: Phạm Thu Hằng
Published: April 2024

Mục tiêu: Đánh giá kết quả phục hồi chức năng cột sống bằng chương trình tập CS-A15 ở bệnh nhân thoát vị đĩa đệm cột sống thắt lưng.
Đối tượng và phương pháp: Nghiên cứu đối chứng, mô tả cắt ngang và tiến cứu trên 60 bệnh nhân thoát vị đĩa đệm cột sống thắt lưng, gồm nhóm 1 (nhóm nghiên cứu) tập chương trình CS-A15 và nhóm 2 (nhóm chứng) tập bài tập McKenzie.
Kết quả: Đánh giá sau khi bệnh nhân ra viện 1 tháng, điểm VAS trung bình ở bệnh nhân nhóm 1 (1,5 ± 1,1 điểm) thấp hơn có ý nghĩa thống kê so với ở nhóm 2 (3,0 ± 0,7 điểm), khác biệt với p < 0,05; chỉ số Schober ở nhóm 1 (14 ± 0,2 cm) cao hơn có ý nghĩa thống kê so với nhóm chứng (13,9 ± 0,46 cm), khác biệt với p < 0,05; ở cả hai nhóm, không còn bệnh nhân có chỉ số ODI ở mức độ kém và tồi tệ, tỉ lệ bệnh nhân có chỉ số ODI mức độ tốt và khá ở nhóm 1 (100%) cao hơn so với ở nhóm 2 (72,4%).
ĐẶC ĐIỂM LÂM SÀNG, CẬN LÂM SÀNG, KẾT QUẢ ĐIỀU TRỊ NHỒI MÁU NÃO Ổ KHUYẾT TRÊN BỆNH NHÂN CÓ RỐI LOẠN CHUYỂN HÓA, TẠI BỆNH VIỆN QUÂN Y 354, TỪ THÁNG 10/2022-9/2023
Authors: Bùi Văn Thanh
Published: April 2024

Mục tiêu: Mô tả đặc điểm lâm sàng, cận lâm sàng, kết quả điều trị; tìm hiểu một số yếu tố liên quan đến kết quả điều trị trên bệnh nhân nhồi máu não ổ khuyết có rối loạn chuyển hóa.
Đối tượng và phương pháp: Nghiên cứu mô tả cắt ngang 119 bệnh nhân nhồi máu não ổ khuyết có rối loạn chuyển hóa, điều trị tại Khoa Nội tâm thần kinh, Bệnh viện Quân y 354, từ tháng 10/2022 đến tháng 9/2023.
Kết quả: Bệnh nhân trung bình 67,62 ± 9,65 tuổi, hay gặp nhất là bệnh nhân từ 60-69 tuổi (36,13%). Tỉ lệ bệnh nhân nam/nữ ≈ 2,13/1. Yếu tố nguy cơ hay gặp trên bệnh nhân là tăng huyết áp (84,87%), tăng triglyceride (77,31%), đái tháo đường (57,14%) và giảm HDL-cholesterol (54,62%). Đa số trường hợp bệnh khởi phát từ từ (65,55%), ý thức tỉnh (96,64%), liệt độ I và độ II (82,36%). 62,18% bệnh nhân nhồi máu não ổ khuyết có hội chứng liệt vận động nửa thân đơn độc. 92,43% bệnh nhân đạt kết quả điều trị tốt và khá. Bệnh nhân ≥ 60 tuổi, nữ giới, bệnh nhân mắc đái tháo đường, rối loạn lipit máu, tiền sử đột quỵ, liệt độ II-IV, có từ 4 yếu tố thành phần hội chứng chuyển hóa trở lên thì có kết quả điều trị kém hơn lần lượt so với bệnh nhân < 60 tuổi, nam giới, không mắc đái tháo đường, không rối loạn lipit máu, không có tiền sử đột quỵ, liệt độ I, có ít hơn 4 yếu tố thành phần hội chứng chuyển hóa.
ĐÁNH GIÁ CHẤT LƯỢNG CUỘC SỐNG 54 BỆNH NHÂN SAU PHẪU THUẬT THAY KHỚP HÁNG NHÂN TẠO, TẠI BỆNH VIỆN QUÂN Y 354
Authors: Lã Thị Thanh Lâm  , Vũ Văn Hoàn
Published: April 2024

Mục tiêu: Đánh giá chất lượng cuộc sống và tìm hiểu một số yếu tố ảnh hưởng đến chất lượng cuộc sống của bệnh nhân sau phẫu thuật thay khớp háng.
Đối tượng, phương pháp: Nghiên cứu mô tả cắt ngang 54 bệnh nhân phẫu thuật thay khớp háng nhân tạo, tại Bệnh viện Quân y 354, từ tháng 12/2022 đến tháng 8/2023.
Kết quả: Điểm chức năng khớp háng và điểm chất lượng cuộc sống của bệnh nhân thời điểm trước khi ra viện lần lượt là 69,8 điểm và 41,8 điểm; thời điểm sau mổ 3 tháng lần lượt là 97,01 điểm và 96,5 điểm; khác biệt có ý nghĩa thống kê với p < 0,05. Mức cải thiện chất lượng cuộc sống ở bệnh nhân < 60 tuổi tốt hơn ở bệnh nhân ≥ 60 tuổi; ở bệnh nhân nam tốt hơn ở bệnh nhân nữ; ở bệnh nhân lao động chân tay tốt hơn ở bệnh nhân trí thức; ở bệnh nhân tiêu chỏm xương đùi tốt hơn ở bệnh nhân gãy liên mấu chuyển xương đùi; ở bệnh nhân thay khớp háng toàn phần tốt hơn ở bệnh nhân thay khớp háng bán phần; sự khác biệt có ý nghĩa thống kê với p < 0,05.
NGHIÊN CỨU CHỈ SỐ DỊCH VÀ THÀNH PHẦN CƠ THỂ Ở BỆNH NHÂN XƠ GAN BẰNG THIẾT BỊ BODY COMPOSITE MONITOR
Authors: Nguyễn Thị Thanh  , Lê Hữu Nhượng  , Hà Thị Kim Chung
Published: April 2024

Mục tiêu: Khảo sát một số chỉ số dịch và thành phần cơ thể ở bệnh nhân xơ gan bằng thiết bị Body Composition Monitor; tìm hiểu mối liên quan giữa chỉ số dịch và thành phần cơ thể với đặc điểm lâm sàng, cận lâm sàng bệnh nhân xơ gan.
Đối tượng, phương pháp: Nghiên cứu mô tả cắt ngang 75 bệnh nhân xơ gan, điều trị tại Bệnh viện Quân y 354, từ tháng 5-9/2022.
Kết quả: Bệnh nhân nghiên cứu có 65,3% từ 50-69 tuổi, nam chiếm 87,7%, nữ 13,3%. Tỉ lệ có thời gian mắc bệnh trên 5 năm là 45,7%, mắc bệnh từ 1-5 năm là 36,0%, có uống rượu là 46,7%, có viêm gan virus B là 14,7%. Các chỉ số trung bình về cân nặng là 54,57 kg, BMI là 21,01 kg/m2. Tỉ lệ xơ gan Child - Pugh A là 41,3%; Child Pugh B là 34,7%; Child Pugh C là 24%. Tỉ lệ bệnh nhân không có dịch ổ bụng là 44,0%, có dịch ổ bụng mức độ vừa là 26,7%, có dịch ổ bụng mức độ nhiều là 18,7%. Có 50,7% bệnh nhân thiếu máu theo Hemoglobin, 65,3% bệnh nhân có giảm tiểu cầu; 38,7% giảm Prothrombin; 16% có tăng INR; 61,3% giảm Albumin máu; SGOT trung bình là 150,72 ± 144,11 U/l, SGPT trung bình 100,15 ± 124,50 U/l. Đo thành phần cơ thể bằng thiết bị Body Composition Monitor cho kết quả quá tải dịch trung bình 1,71 ± 1,99; tổng khối lượng nước cơ thể 33,0 ± 5,68 lít; nước ngoại bào 15,74 ± 29,8 lít; nước nội bào 17,9 ± 3,67 lít; khối lượng mô cơ 38,46 ± 10,16 kg; khối lượng mô mỡ 17,31 ± 9,67 kg; khối lượng tế bào cơ thể 21,84 ± 6,41 kg; thừa dịch chiếm 68,0%, thiếu dịch 10,7% và đủ dịch 21,3%. Chỉ số cơ, mỡ giảm ở 30,7% và 48,0%. Chỉ số quá tải dịch tương quan với BMI, Protein, Albumin, dịch ổ bụng; không tương quan với số lượng hồng cầu và nồng độ hemoglobin. Chỉ số cơ tương quan với nồng độ Albumin, hồng cầu, huyết sắc tố, dịch ổ bụng; không tương quan với nồng độ Protein. Chỉ số mỡ tương quan với nồng độ cholesterol và triglycerid; không tương quan với BMI.
ĐẶC ĐIỂM TỔN THƯƠNG ĐƯỜNG TIÊU HÓA TRÊN Ở 90 BỆNH NHÂN VIÊM TỤY CẤP, ĐÃ ĐIỀU TRỊ
Authors: Nguyễn Thị Thanh  , Lê Hữu Nhượng  , Phạm Hồng Ánh
Published: April 2024

Mục tiêu: Mô tả đặc điểm tổn thương đường tiêu hóa trên ở bệnh nhân viêm tụy cấp đã điều trị ổn định và tìm hiểu mối liên quan với mức độ nặng của bệnh trên bệnh nhân nghiên cứu.
Đối tượng và phương pháp: Nghiên cứu mô tả cắt ngang 90 bệnh nhân viêm tụy cấp đã điều trị ổn định, điều trị tại Khoa Tiêu hóa, Bệnh viện Quân y 354, từ 6/2022 đến tháng 8/2023. Mô tả đặc điểm tổn thương đường tiêu hóa trên qua nội soi. Đánh giá mức độ nặng viêm tụy cấp qua chụp cắt lớp vi tính và theo CTSI.
Kết quả: Bệnh nhân trung bình 57,66 ± 16,38 tuổi, từ 60 tuổi trở lên chiếm 48,9%, nam giới chiếm 78,9%, nữ giới 21,1 %, viêm tụy cấp mức độ nhẹ chiếm 82,2%. Nguyên nhân do rượu 33.3 %; sỏi mật 24,4%; tăng triglyceride 10,1%; chưa rõ nguyên nhân 24,4%. Trên nội soi, phát hiện tổn thương thực quản 86,7% (trong đó loét thực quản 10,0%; viêm thực quản trào ngược 76,7% với các thể A, B, C lần lượt là 61,1%, 11,1% và 4,4%), tổn thương dạ dày 67,7 % (trong đó viêm xung huyết 26,6%; loét dạ dày 7,8%), tổn thương hành tá tràng % (trong đó viêm phù nề 14,4% và loét 6,7%). Không tìm thấy mối liên quan giữa các tổn thương đường tiêu hóa trên với mức độ nặng viêm tụy cấp ở các bệnh nhân nghiên cứu.
ĐÁNH GIÁ HIỆU QUẢ LÀM SẠCH ĐẠI TRÀNG CỦA SIMETHICONE PHỐI HỢP VỚI FORTRANS TRONG CHUẨN BỊ NỘI SOI ĐẠI TRÀNG TOÀN BỘ
Authors: Nguyễn Thị Hạnh  , Lê Hữu Nhượng  , Nguyễn Công Sơn
Published: April 2024

Mục tiêu: Đánh giá hiệu quả làm sạch đại tràng của Simethicone phối hợp với Fortrans trong chuẩn bị nội soi đại tràng toàn bộ và mối quan hệ giữa sự tuân thủ của bệnh nhân đến kết quả làm sạch đại tràng.
Đối tượng, phương pháp: Nghiên cứu mô tả cắt ngang, có đối chứng về hiệu quả làm sạch đại tràng (sử dụng thang điểm Rebecca Matro kết hợp thang điểm Boston) trên 100 bệnh nhân nhóm can thiệp uống Simethicone phối hợp với Fortrans và 100 bệnh nhân nhóm đối chứng uống Fortrans trong chuẩn bị nội soi đại tràng toàn bộ, tại Khoa Nội tiêu hóa - Bệnh viện Quân y 354, từ tháng 01-8/2023.
Kết quả: Bệnh nhân trung bình 59,89 ± 17,53 tuổi, nhiều nhất ở lứa tuổi ≥ 60 (chiếm 60,5%). Sau dùng thuốc, triệu chứng chướng bụng ở nhóm can thiệp (24,0%) thấp hơn so với nhóm chứng (34,0%), khác biệt có ý nghĩa thống kê (p < 0,05). Mức độ sạch toàn bộ đại - trực tràng và tại các vị trí khảo sát ở nhóm can thiệp cao hơn ở nhóm chứng (p < 0,05). Bệnh nhân tuân thủ thời gian uống thuốc và thực hiện các động tác bổ trợ thì có tỉ lệ làm sạch đại tràng cao hơn so với bệnh nhân không tuân thủ thời gian uống thuốc và thực hiện các động tác bổ trợ, khác biệt có ý nghĩa với p < 0,05.