bluuebunny/crossref_metadata_2025 huggingface dataset:
Contribution to the knowledge of the oribatid mite genus Discoppia (Acari, Oribatida, Oppiidae)
Authors: Ermilov Sergey G. , Makarova Olga L.
Published: June 2023

The supplementary description of the oribatid mite species Discoppia (Cylindroppia) cylindrica (Pérez-Íñigo, 1965) (Oribatida, Oppiidae) is presented, based on materials collected from deep layers of coastal sandy soils in the Republic of Dagestan, eastern Caucasus. The morphology of exobothridial seta, gnathosoma and ovipositor, and the identification of leg setae and solenidia are given for the first time for this species. The revised generic diagnosis, identification key, distribution, and habitats of all known representatives of Discoppia Balogh, 1983 are presented. Some taxonomic nuances within Discoppia are discussed, resulting in the following proposals: Oppia bifidus Bayoumi and Al-Khalifa, 1985 is a junior synonym of D. (C.) cylindrica; Oppia agricola Fujikawa, 1982 is not synonym of D. (C.) cylindrica and transferred to the genus Microppia Balogh, 1983; Oppia tenuis Hammer, 1958 is not representative of Discoppia; Discoppia (Cylindroppia) rostroincisa Subías and Rodríguez, 1986 n. stat. (instead of the existing subspecies status). Together with D. (C.) cylindrica, in the same samples, two rare Oppiidae species were found: Oxyoppia (Oxyoppiella) minuscula Hugo-Coetzee, Lotfollahi, Abbasi-Kalo and Movahedzade, 1917 (known only from the open habitats in Iran) is first recorded in Russia; Graptoppia (Stenoppia) boucheri Ermilov and Frolov, 2021 (known from passalid beetles collected in Ghana and Gabon, West Africa) is first found in the Palaearctic. Both findings in Dagestan are among the northernmost records of their semicosmopolitan subgenera.
A new strategy to achieve high antimicrobial activity: green synthesised silver nanoparticle formulations with Galium aparine and Helichrysum arenarium
Authors: Ozdemir Cilem , Gencer Merve , Coksu Irem , Ozbek Tulin , Derman Serap
Published: June 2023

Silver nanoparticles (AgNPs), which have recently gained attention due to their antimicrobial activity, can also be produced by green synthesis. The aims of this study were to (i) characterise green synthesized AgNPs using microwave-assisted aqueous extracts of Galium aparine (G-AgNPs) and Helichrysum arenarium (H-AgNPs) and (ii) investigate the combined antimicrobial effects of the G- and H-AgNPs in different ratios. Nanoparticle formation and reactions were determined with UV-Vis spectroscopy. The G-AgNPs were 52.0±10.9 nm in size, with a 0.285±0.034 polydispersity index (PDI), and a -17.9±0.9 mV zeta potential. For H-AgNPs these characteristics were 23.9±1.0 nm, 0.280±0.032, and -21.3±2.7 mV, respectively. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) confirmed that the particles were monodisperse and spherical. The Fourier transform-infrared spectroscopy (FT-IR) results showed the presence of reducing agents that stabilised the AgNPs. Three different nanoformulations (NF-1, NF-2, and NF-3) were prepared by combining these two synthesised nanoparticles in different ratios and their antimicrobial activity was tested against E. coli, S. aureus, C. albicans, and A. flavus. Our study is the first to show that combining AgNPs from two different biological sources can produce effective nanoformulations with improved antibacterial activity against E. coli and S. aureus. These nanoformulations showed lower minimum inhibitory concentrations (31.25 µg/mL against E. coli with all NFs; 62.5 µg/mL for NF-1 and 125 µg/mL for NF-2/3 against S. aureus) than G-AgNPs (62.5 µg/mL for E. coli) or H-AgNPs (125 µg/mL for S. aureus) alone. Their high combined inhibitory effect against E. coli (NF-1–3) was synergistic and against S. aureus (NF-2 and NF-3) potentially additive. Considering such promising results, we believe our study provides some direction for new research and strategies in antimicrobial therapeutics.
The effects of ketamine on viability, primary DNA damage, and oxidative stress parameters in HepG2 and SH-SY5Y cells
Authors: Jurič Andreja , Lovaković Blanka Tariba , Zandona Antonio , Rašić Dubravka , Češi Martin , Pizent Alica , Neuberg Marijana , Canjuga Irena , Katalinić Maja , Vrdoljak Ana Lucić , Rešić Arnes , Karačonji Irena Brčić
Published: June 2023

Ketamine is a dissociative anaesthetic used to induce general anaesthesia in humans and laboratory animals. Due to its hallucinogenic and dissociative effects, it is also used as a recreational drug. Anaesthetic agents can cause toxic effects at the cellular level and affect cell survival, induce DNA damage, and cause oxidant/antioxidant imbalance. The aim of this study was to explore these possible adverse effects of ketamine on hepatocellular HepG2 and neuroblastoma SH-SY5Y cells after 24-hour exposure to a concentration range covering concentrations used in analgesia, drug abuse, and anaesthesia (0.39, 1.56, and 6.25 µmol/L, respectively). At these concentrations ketamine had relatively low toxic outcomes, as it lowered HepG2 and SH-SY5Y cell viability up to 30 %, and low, potentially repairable DNA damage. Interestingly, the levels of reactive oxygen species (ROS), malondialdehyde (MDA), and glutathione (GSH) remained unchanged in both cell lines. On the other hand, oxidative stress markers [superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT)] pointed to ketamine-induced oxidant/antioxidant imbalance.
Criminologists’ Perspective of Factors Contributing to Unreported Narcotics Crimes
Authors: Perkasa Muhammad Merpi Agung
Published: June 2023

Efforts to address and eliminate narcotics crimes heavily depend on community involvement, particularly in reporting such offenses, yet many hesitate due to various reasons. This research explores factors that hinder individuals from reporting narcotics crimes and seeks effective strategies to combat this issue, employing both normative juridical and empirical juridical approaches, including literature reviews and field studies, and analyzing data qualitatively. An example from Decision Number: 522/Pid.Sus/2022/PN Tjk, where defendant Ali Amarsyah Bin Misran was sentenced to eight months for a narcotics offense, highlights the legal consequences of such crimes. The research identifies key factors discouraging reports: the inconvenience of legal processes, fear of retaliation from criminals, and a lack of awareness about legal protections for informants. To counteract these issues, the research recommends non-penal measures such as public education on legal rights and protections, alongside penal strategies that involve thorough inquiries and investigations to collect evidence and identify suspects in unreported narcotics activities. This dual approach emphasizes a holistic strategy to boost public cooperation with law enforcement and enhance the effectiveness of narcotics crime prevention and prosecution.
Bazı yeni N-sübstitüe amino asit esterlerinin yapısal özelliklerinin in silico ile araştırılması
Authors: ÇALIŞIR Ümit , ÇİÇEK Baki
Published: June 2023

Bu çalışma kapsamında oldukça önemli biyolojik kullanım alanlarına sahip N-sübstitüe glisin ester bileşiklerinin bazı teorik (hesapsal) özellikleri HyperChem programı yardımıyla hesaplanmıştır. HyperChem programı kullanılarak etil 9-{[(2-etoksi-2-oksoetil)amino]etil}-4-okso-3-oksa-6,9,12-triazatetradekan-14-oat (1), dietil 3,6,9,12,15-pentaazaheptadekan-1,17-dioat (2), ve etil 2-((6-metil-2-piridinil)amino)asetat (3) bileşiklerinin bağ uzunlukları, toplam yük yoğunluğu ve yük dağılımı, elektrostatik potansiyelleri belirlenmiştir. En kararlı yapıları üzerinden bazı enerji parametreleri ile HOMO, LUMO, ve ΔE orbitalleri hesaplanmıştır. Elde edilen verilerden yararlanılarak iyonlaşma potansiyeli belirlenmiştir. Ayrıca teorik elektronik UV spektrumu ve geçiş değerleri hesaplanmıştır. Bu yöntemle hesaplanmış teorik UV spektrumu ve geçiş değerleri, deneysel olarak elde edilen UV-VİS spektrumu karşılaştırılarak kıyaslanmıştır. Teorik ve deneysel verilerin uyumlu oldukları tespit edilmiştir. Bileşiklerin reaktivitesi ile ilişkili olan ΔE değerinin, (3) bileşiğinde oldukça düşük olduğu belirlenmiştir (8.8559 eV).
The Relationship Between Bitcoin Returns, Volatility, And Volume Using Asymmetric Garch Modelling
Authors: Kurnaman Carel Dwinugrahadi , Rizal Nora Amelda
Published: June 2023

In 2020-2021 where the world experienced a Covid-19 pandemic, the price of Bitcoin increased and there was a fairly high price spike at the turn of the year 2020-2021 and had touched an all-time high (ATH) at the end of 2021. Bitcoin is one of the currencies crypto that is volatile when compared to the exchange rates of widely used currencies. In addition, Bitcoin price movements are difficult to predict. The samples used are Euro, Pound Sterling, Yuan, Yen, Ruble, Franc, and Bitcoin. The data used is in the form of Bitcoin price data and some of these currencies in 2020-2021. This study aims to find the relationship between volatility with Bitcoin trading volume, return with Bitcoin trading volume, and return with Bitcoin volatility for forecasting purposes. The research method used is the Augmented Dickey-Fuller (ADF) stationarity test, then using the ARMA model after that using the EGARCH model to find the relationship. The results of this study indicate that there is a positive relationship between volatility and Bitcoin trading volume. Just like the return and trading volume of Bitcoin there is a positive relationship. However, Bitcoin returns, and volatility have a negative relationship. For further research can use different crypto currency assets with different time periods.

Keywords: Volatility, Volume, Returns, Bitcoin, GARCH
Tindak Lanjut Hasil Rekomendasi Pemeriksaan Sebagai Penunjang Kualitas Laporan Keuangan Pemerintah Daerah
Authors: Pramana Andy Chandra , Rukmini Meme , Riningsih Duwi , Prihardina Oktaviana Wahyu , So Mayciella
Published: June 2023

The research was conducted to obtain empirical evidence related to the effect of Follow-up Examination Recommendation Results on the Quality of Local Government Financial Statements. The Regional Government of Nganjuk Regency which has received WTP opinions from BPK 5 times in a row so it is interesting to conduct research here whether the success cannot be separated from the Follow-up Results of Examination Recommendations from BPK. Follow-up of the Examination Recommendation Results are derived to 4 indicators, namely specific policies related to follow-up, other parties' responses, leadership commitment and leadership motivation, then tested for their influence with multiple linear regression analysis. As a result, these 4 indicators have an influence on the quality of local government financial statements. This research can be developed on other entities that have higher achievements, such as WTP opinions from BPK consecutively for 10 times, so that they can be used as a reference by other entities in maintaining and improving the quality of their financial statements.

Keywords : follow-up recommendations on examination results; quality; local government financial statements
Pemetaan Penelitian Rasio Biaya Operasional terhadap Pendapatan Operasional (BOPO) pada Perbankan Syariah dan Konvensional: Studi Bibliometrik VOSviewer dan Literature Review
Authors: Budianto Eka Wahyu Hestya , Dewi Nindi Dwi Tetria
Published: June 2023

This study aims to determine the research mapping regarding the Operating Income to Operating Costs (OIOC) ratio in Islamic and Conventional Banking using a mix-method approach, namely the VOSviewer bibliometric study and literature review. Data analysis techniques include: (1) mapping the distribution of journal publications around the OIOC ratio; (2) mapping the results of the VOSviewer bibliometric visualization around the OIOC ratio based on the number of clusters and their items; and (3) mapping research topics around the OIOC ratio using a literature review study. The results showed that: (1) based on the distribution of journal publications, there were 736 journal publications regarding the OIOC ratio; (2) based on the mapping of the VOSviewer bibliometric study, the network visualization results around the OIOC ratio are divided into 4 clusters and 163 topic items; (3) based on the mapping of literature review studies, there are 49 topics around the influence of the OIOC ratio and 14 topics about the determinants of the OIOC ratio. The implications and contributions of this research are to map research topics around OIOC ratios in Islamic and Conventional Banking which are often or rarely researched by researchers so that they can be a reference for subsequent researchers.

Keywords: Operating Income to Operating Costs (OIOC); Bibliometrics; VOSviewer; Literature Review; Islamic and Conventional Banking
The dialectic of the relationship between the form of the political system and political development (Iraq is a model)"
Authors: Karar Ali Maktoof  , Assit.Lect. Aya Mohamed Al-Rubaie
Published: June 2023

Present in the twentieth century and changes in the twentieth century and changes in the environment and talk about the environment surrounding the present. Iraq, policy development and change, and that the study of political development and the political study concerned with political study, the one working in it, the one working in it, and this is also related to building training, training, for political construction, and finding a kind of specialized and distinct political institutions and processes. To be able to grow and transform into a new democratic society, making it the new state of affairs in the Iraqi political system after 2003.
" The Future of Turkish-Saudi Relations after the Assassination of Jamal Khashoggi"
Authors: Ahmad Majeed Jasim  , Nazar Abdulkareem Hasan
Published: June 2023

Turkish-Saudi relations have been one of the most important relations at the regional level in recent years, although they were not so at the beginning, they have been sporadic visits from here and there, but it quickly developed with the arrival of Islamists to power in the country during the last two decades As the AKP came to power in Turkey, these relations were in a state of apathy, but they were soon stronger than their predecessors. Despite their worsening after the assassination of journalist Jamal Khashoggi on Turkish soil, both sides tried to mitigate the impact Especially the pain ARABIA through the lure of the Turkish side financial aid and huge projects outside the country and within, suggesting that this relationship will be back stronger than previous periods and expanded to include new areas did not reach its previously.
Impact of vaccination and treatment on SIRS model with Non-linear incidence rate
Authors: Arkan N. Mustafa  , Hanaa J. Ahmed
Published: June 2023

In this paper, an epidemic model consisting of susceptible, vaccination, infected and removal is formulated mathematically. The proposed model deals with incorporating the vaccination factor, treatment factor and non-linear incidence rate. Non negative for the model Solutions are proved, a simplex attractor invariant set is found, the basic reproduction number of the model is calculated using the method of the next-generation matrix, and the model equilibrium points performed a local stability analysis, we have collected the infected cases COVID-19 real data in Kurdistan region from Iraq to estimate the model parameters and sensitivity of the basic reproduction number and the model variable to the parameters of the model was studied
BA-Semigroup
Authors: Shahoodh Mohammed Khalid
Published: June 2023

Several algebraic structures have been studied by many authors to discuss the relationships among them. This article aims to study two algebraic structures, namely semigroup and BA-algebra, by combining them in one form, namely BA-semigroup and investigate some of its properties. This paper studied the BA-sub-semigroup, an ideal and BA-homomorphism of a BA-semigroup with some of their properties. Some examples are given to illustrate the results.
Awareness among medical and dental professionals about oral and maxillofacial surgery – An original study
Authors: Dwivedi Nikhil Kumar , Kumar Sanjeev , Biswas Mohona , Garg Rajni , Neha Kumari , Singh Shivraj Kumar
Published: June 2023

Objectives:

The aim of the study is to determine the understanding and awareness about oral and maxillofacial surgery (OMFS) among dental and medical practitioners, paramedical students and nurses.

Materials and Methods:

A set of 15 questions was made with the help of Google forms and circulated through social media. This study was performed in Garhwa district of Jharkhand among dental undergraduates and postgraduate students, medical practitioners, paramedical students and nurses.

Results:

The result showed that out of 170 participants, 69.8% were undergraduates, postgraduate dental students, and practicing dentists; 8.3% were medical practitioners, 8.3% were paramedical students, and 13.5% were nurses. About 92.7% have heard about OMFS. Rest of the results will be discussed in later part of the article.

Conclusion:

It is very disheartening that despite of prominent role of oral and maxillofacial surgeons in medical field, most of the public is not aware of this. Even medical practitioners are not aware of its role and scope in treatment of various kinds of diseases in head and neck region and as a result they cannot refer patients to the concerned department. Hence, most of the patients in our society are deprived of appropriate treatment. We should adopt different techniques to make people aware about this specialty.
Poster - « Archives, mémoires et identités métisses ». Une exposition virtuelle réalisée dans le cadre du projet de recherche « Résolution-Métis » aux Archives de l’État à Bruxelles
Authors: Garcia Jeanne
Published: June 2023

Le 15 octobre 2021, l’exposition virtuelle « Archives, mémoires et identités métisses. Regard sur le projet de recherche “Résolution-Métis” en cours aux Archives de l’État » est mise en ligne. Quelques semaines plus tôt, l’équipe du projet annonçait le lancement de cette exposition lors de la Journée d’histoire belge des migrations. Cet espace virtuel offre un aperçu, à travers une sélection de documents contextualisés, de l’histoire encore peu connue des Métis nés durant la période coloniale belge et des pratiques de séparation et de déplacements forcés dont ils et elles ont souffert. Mais il est avant tout destiné à offrir, en toute transparence, un regard sur la manière dont travaille l’équipe sur ce sujet sensible et complexe. Nous allons revenir dans cet article sur les différents enjeux qui ont entouré la conception de cette exposition, mais aussi sur le contexte particulier qui l’a vu naitre et sur les objectifs que l’équipe s’est fixés, notamment en matière d’accessibilité et de co-construction du récit historique.
Revealing the interdiffusion equilibrium of lithium cations across a solid--electrolyte interface by T1 NMR relaxation
Authors: Schleker P. Philipp M. , Eichel Rüdiger-A. , Granwehr Josef
Published: June 2023

Fast charging of batteries is pivotal for a broader acceptance of electric mobility. While fast charging capabilities have been demonstrated for lithium titanate (Li4Ti5O12, LTO) anode materials, the underlying mechanisms are still poorly understood. Recently the interdiffusion of mobile lithium ions between a liquid electrolyte and LTO, facilitated by unpinning of polarons from surface defects, has been suggested as a potential factor influencing fast charging. This effect is explored further by systematically varying the concentration of the electrolyte salt in an aprotic electrolyte in contact with LTO, and acquiring Li-7 T1 NMR relaxation time constants as a measure for the bulk concentration of paramagnetic polarons. A systematic relation between electrolyte concentration and Li-7 T1 was found, with a qualitatively different behavior above and below about 5\;mM. In the high concentration region, the observed relation was consistent with the law of mass action for a biphasic equilibrium exchange of lithium ions between LTO and electrolyte. Upon contact of the two phases, there was a redistribution of lithium ions between anode and electrolyte, which can be understood analogously to osmotic pressure of mobile lithium ions. This is the first demonstration of such an equilibrium for a non-faradaic lithium exchange at a solid–-electrolyte interface, substantiating our previous hypothesis of a polaron-supported fast-charging mechanism. This study provides a basis for more quantitative (surface)-defect engineering, which is key to optimize battery fast-charging properties.
Effect of Friction Stir Processing Parameters on the Properties of AA6061/Al2O3 Nanocomposites
Authors: Karami Ramin , Abdollahi Mir Ali Asghar
Published: June 2023

This study examines how friction stir processing parameters affect the properties of AA6061/Al2O3 nanocomposites. The tool geometry is one of the key factors in this process, which affects the contact area between the tool and the workpiece, as well as the resulting heat generated by rotational speed, traverse speed, dwell time, and tool tilt. Tools with conical geometry exhibit pulsating mixing behavior, where a higher pulse production results in smaller particle size, more uniform distribution of reinforcing particles within the metallic matrix, and consequently, improved tensile strength and hardness. Based on experimental studies and extensive trial and error, it has been established that square tools generate a higher number of pulses, leading to the attainment of superior mechanical properties for aluminum alloys. Therefore, in this research, the conical tool geometry with sample number 4 was chosen.
Direct in situ measurement of polymorphic transition temperatures in thermo-mechanochemical reactions
Authors: Alić Jasna , Etter Martin , Rubčić Mirta , Štefanić Zoran , Šekutor Marina , Užarević Krunoslav , Stolar Tomislav
Published: June 2023

For the first time, we directly measured the onset and completion temperatures of polymorphic transitions in thermo-mechanochemical reactions by simultaneous in situ synchrotron powder X-ray diffraction and temperature monitoring. We determined the thermo-mechanochemical polymorphic transition temperature in 1-adamantyl-1-diamantyl ether to be 31 °C lower than the transition temperature determined by DSC.
Ligand Control of Regioselectivity in Palladium-Catalyzed Heteroannulation Reactions of 1,3-Dienes
Authors: Rodina Dasha , Vaith Jakub , Paradine Shauna
Published: June 2023

Olefin carbofunctionalization reactions are indispensable tools for constructing diverse, functionalized scaffolds from simple starting materials. However, achieving precise control over regioselectivity in intermolecular reactions remains a formidable challenge. By using PAd2nBu as a ligand, we have achieved regioselective heteroannulation of o-bromoanilines with branched 1,3-dienes through ligand control. This enables regiodivergent access to 3-substituted indolines, showcasing excellent regioselectivity and reactivity across a range of functionalized substrates. To gain further insights into the origin of selectivity control, we employed a data-driven strategy, developing a linear regression model using calculated parameters for phosphorus ligands. This model identified four key parameters governing regioselectivity in this transformation, paving the way for future methodology development. Additionally, density functional theory calculations elucidated key selectivity-determining transition structures along the reaction pathway, corroborating our experimental observations and establishing a solid foundation for future advancements in regioselective olefin difunctionalization reactions.
One-Pot, Three-Component Synthesis of Sulfides Using a Sulfoxide Reagent as a Sulfur Dication Equivalent
Authors: Saito Fumito , Euteneuer Simon
Published: June 2023

Sulfides are prevalent in bioactive molecules and have also found numerous applications in synthesis. Various reagents have been developed for the three-component synthesis of sulfides, but the strategic use of sulfur dication equivalents for this purpose has been largely overlooked. Here we report a one-pot, three-component synthesis of sulfides exploiting a sulfoxide reagent as a formal sulfur dication equivalent, unlocking new synthetic chemistry of sulfenate anions. Our protocol involves three chemical operations to sequentially form sulfenate anions, sulfenate esters, and sulfides, using two Grignard reagents and trimethylsilyl chloride (TMSCl). We demonstrate a wide range of Grignard reagents to be coupled, thereby allowing the modular synthesis of sulfides, including dialkenyl and alkenyl-alkynyl sulfides.
Coupling the Coupling: Dissecting the Role of Tau’s Microtubule-Binding Repeats in Modulating Amyloid-beta Aggregation and Toxicity Profiles in Alzheimer’s Disease
Authors: Kim Mingeun , Lin Yuxi , Nam Eunju , Lim Sungsu , Kim Yun Kyung , Lee Young-Ho , Lim Mi Hee
Published: June 2023

The accumulation of neurofibrillary tangles and senile plaques composed of tau and amyloid-beta (Abeta) aggregates, respectively, is observed in the brain of Alzheimer’s disease (AD). Efforts have been made to elucidate the link between the aggregation of tau and Abeta and the development of AD; however, the pathological implication of their co-aggregation remains unclear. Here we report that the microtubule-binding domain of tau, critical for its aggregation, has direct contacts onto Abeta and alters the aggregation behavior of Abeta in a distinct manner, which in turn affects the Ab-associated toxicity under both extracellular and intracellular conditions. Our mechanistic investigations illuminate that the fragments with the balanced hydrophobicity and hydrophilicity properties in the microtubule-binding domain of tau can form adducts with monomeric and dimeric Abeta to varying degrees, which may determine their impact on the aggregation and toxicity of Ab. These findings offer new avenues for understanding and treating AD by highlighting the interplay between tau and Abeta in the pathogenesis.
A coumarin-based array to discriminate between different types of amyloid fibrils
Authors: Trinh Natalie , Bhuskute Kaustubh R. , Varghese Nikhil R. , Buchanan Jessica A. , McCutcheon Fiona M. , Medcalf Robert L. , Jolliffe Katrina A. , Sunde Margaret , New Elizabeth J. , Kaur Amandeep
Published: June 2023

Self-assembly of misfolded proteins can lead to the formation of amyloids, which are implicated in the onset of many pathologies including Alzheimer’s disease and Parkinson’s disease. The facile detection and discrimination of different amyloids is crucial for early diagnosis of amyloid-related pathologies. Here, we report the development of a fluorescent two-sensor array which is able to correctly discriminate between four different amyloids implicated in amyloid-related pathologies with 100% classification. The array was also applied to mouse models of Alzheimer’s disease and was able to discriminate between samples from mice corresponding to early (6 months) and advanced (12 months) stages of Alzheimer’s disease. Finally, the flexibility of the array was assessed by expanding the analytes to include functional amyloids. The same two-sensor array was able to correctly discriminate between eight different disease-associated and functional amyloids with 100% classification.
Economía y marketing: una relación desde cuatro perspectivas
Authors: Albino Gavilán María Teresa , Moreno Chávez César , Ríos Cueva Sheyla Yadira
Published: June 2023

Este artículo analiza la relación entra la economía y el marketing desde cuatro perspectivas teóricas. En primer lugar, consideramos la economía neoclásica, la cual plantea un esquema basado en un consumidor racional y optimizador. En general este esquema está en discrepancia con los planteamientos del marketing, en tanto este último opera en gran parte influyendo sobre aspectos no racionales. En segundo lugar, analizamos la economía conductual, la cual identifica múltiples sesgos cognitivos en las decisiones de compra. En este caso, la relación con el marketing resulta estrecha en tanto se busca utilizar los sesgos para moldear el comportamiento del consumidor. En tercera instancia, consideramos el paradigma de la neuroeconomía, que estudia el proceso de decisión desde la perspectiva del sistema nervioso central. Aquí la relación se da fundamentalmente en términos del llamado neuromarketing, que utiliza el conocimiento sobre el mencionado sistema para impulsar las ventas, el posicionamiento de la marca y la lealtad del consumidor. Finalmente, analizamos la economía institucional, la cual concibe al individuo como un ser que actúa de acuerdo a hábitos y costumbres. También en este caso se halla una relación directa, por cuanto el marketing puede influir sobre ambas dimensiones.
TOÁN TỬ BAO ĐÓNG THEO TIẾP CẬN SIÊU ĐỒ THỊ
Authors: Nguyễn Hoàng Sơn
Published: June 2023

Trong bài báo này chúng tôi nghiên cứu cách tiếp cận một số vấn đề về tổ hợp của toán tử bao đóng bằng mô hình siêu đồ thị. Chúng tôi đưa ra biểu diễn tất cả khóa tối thiểu của toán tử bao đóng qua siêu đồ thị transversal. Sử dụng siêu đồ thị, chúng tôi thiết lập mối quan hệ giữa phản khóa và khóa tối thiểu của toán tử bao đóng.
A Low Power – Long Range IoT Development Board based on LoRa Technology
Authors: Hai-Phong Phan , Duong Van-Kiem , Tran Thi-Kieu , Vo Viet-Dung , Hoang Huu-Hanh
Published: June 2023

LoRa is an advanced technology investigated and applied widely to the IoT field because of its power efficiency and wireless connection. Therefore, a development kit supporting LoRa technology is a vital device that helps engineers to develop a faster and more stable IoT – LoRa-based system. The development kit not only requires a small size to be easily integrated into other systems but also has a low power consumption to adapt to the requirement of IoT devices. In this paper, we propose a development kit for an IoT platform using LoRa technology. The power consumption and Received Signal Strength Indication (RSSI) of this kit are addressed. The development kit works well, as anticipated.
LET'S PLAY
Authors:   , Storm Megan
Published: June 2023

Playfulness is an element which drives play and encourages us to interact with our surroundings in new ways. As with all mammals, humans, from birth, use play as a learning tool to develop our relationship with our environment and with each other. However, when we transition into adulthood playful interactions become far less frequent. This change in behaviour creates a research opportunity within architecture to reintroduce daily play for adults with new interactive spaces.

Action research is the main methodology used to develop the research on how adults experience and express playfulness. A variety of methods including drawing, model building, 1:1 design intervention, and surveying will be used to define the spatial elements which can encourage playfulness in adults. The research outlines how to encourage new interactions by connecting users’ bodies to a space through their senses, the expression of their emotions, and their movements. The haptic, olfactory, visual, and aural senses are used to engage the users in new playful spaces.

Wellington City is explored for potential sites to create new playful spaces. Victoria University of Wellington’s Te Aro campus becomes the focal site for these new spaces. Te Aro campus’ interior circulation is treated with four new sensory-specific designs to encourage adult students to engage in daily play. These designs use generic forms which have sensory-specific interactions, whilst remaining ambiguous. The forms encourage adults to be playful by allowing them to project their own playfulness onto the space around them.
Effect of Antipsychotic Drugs on the Cardiac Function of Patients with Schizophrenia and Analysis of Echocardiogram Results
Authors: Fan Jinluan
Published: June 2023

Objective: To explore and analyze the effect of antipsychotic drug treatment on the cardiac function of patients with schizophrenia. Methods: From January 2021 to December 2022, 30 patients with schizophrenia were divided into three groups, group A (n = 10), group B (n = 10), and group C (n = 10), by random number table. Patients in group A were treated with risperidone, patients in group B were treated with quetiapine, and patients in group C were treated with aripiprazole. The Positive and Negative Syndrome Scale (PANSS) and Lowenstein Occupational Therapy Cognitive Assessment (LOTCA) scores, electrocardiogram results, and echocardiogram results were compared among the three groups. Results: There were no significant differences in PANSS and LOTCA scores among the three groups after treatment (P > 0.05). Electrocardiogram showed that the incidence of prolonged QT interval in group C was higher than that in groups A and B (P < 0.05); echocardiogram showed that the left ventricular ejection fraction (LVEF) and left ventricular end-diastolic volume (LVEDV) in group C were lower than those in group A and group B (P < 0.05). Conclusion: Risperidone, quetiapine, and aripiprazole can improve the symptoms and cognitive function in patients with schizophrenia. Aripiprazole has a greater impact on cardiac function, as evidenced on electrocardiogram and echocardiogram. Therefore, close monitoring must be done to ensure drug safety.
Practical Strategies to Improve the Quality of Teachers in Higher Vocational Colleges in the New Era
Authors: Li Yujie
Published: June 2023

In this paper, practical strategies are proposed to improve the quality of teachers in higher vocational colleges. Research and analyses have shown that the key to improving the quality of teachers in higher vocational colleges lies in the improvement of professionalism, subject knowledge, and teaching ability. Thus, the following practical strategies are proposed: strengthen teachers’ moral development, establish a teacher training system, focus on curriculum construction and teaching method innovation, and strengthen the teaching quality monitoring and evaluation mechanism. These measures can effectively improve the quality of teachers in higher vocational colleges and promote the development of higher vocational education.
Application of BIM + Virtual Simulation Technology in Road Engineering Construction Technology and Organization Course
Authors: Gao Taotao , Zhao Liming , Lin Jun
Published: June 2023

We focus on the goal of undergraduate talent training, consider the course features of Road Engineering Construction Technology and Organization, analyze the problems existing in the practical teaching of the course, use the advantages of BIM + virtual simulation technology, design a scientific and reasonable practical teaching content of Road Engineering Construction Technology and Organization, and address the contrast between the strong practical aspect of the traditional Road Engineering Construction Technology and Organization course and the lack of practical instruments in hope to improve students’ learning autonomy, enhance the quality of practical teaching, achieve the training objectives of the course, and nurture applied technical talents.
Vulnerabilidade de adolescentes escolares em relação à infecção pelo vírus da imunodeficiência humana
Authors: Moreira Anderson da Silva , Melo Géssyca Cavalcante de Melo , Amorim Bárbara Maria Ferreira Canuto , França Alba Maria Bomfim de , Duprat Irena Penha , Silva Maria Rosa da , Freitas e Silva Leila Milka
Published: June 2023

Introdução: Este artigo tem como objetivo descrever a situação de vulnerabilidade de adolescentes escolares em relação à infecção pelo Vírus da Imunodeficiência Humana (HIV) e sua associação com fatores individuais e sociais. Delineamento: Estudo descritivo, transversal e quantitativo. A coleta de dados aconteceu de forma on-line, com adolescentes do ensino médio de uma escola pública, utilizando o folheto do estudante “Eu preciso fazer o teste do HIV/aids?”. A análise de dados foi realizada por meio dos softwares JASP 0.9.1.0 e BioEstat 5.0, utilizando técnicas de estatística descritiva e analítica. Resultados: Dos 126 participantes, 81,7% possuíam vulnerabilidade baixa à média para a infecção pelo HIV e 18,3%, alta. Dentre os adolescentes com maior vulnerabilidade, a maioria encontrava-se na faixa etária entre 18 e 19 anos (22,0%), eram do sexo feminino (18,7%), com orientação sexual homossexual/bissexual (23,1%), de cor preta (44,4%), sem religião ou não eram cristãos (23,1%), com parceria sexual estável (26,1%) e residentes da zona urbana (29,7%). Foi encontrada associação entre o nível de vulnerabilidade e o local de residência (p=0,032; OR=2,71; IC 95%=1,07-6,89) dos estudantes. Implicações: Os adolescentes podem estar vulneráveis ao HIV, sendo importante ações voltadas à educação sexual.
Prospects for the application of various methods of vibration processing in the welded structures of spacecraft
Authors: Ponomarev K. E. , Strelnikov I. V.
Published: June 2023

The possibility of using vibration technologies as an alternative to heat treatment, but having a shorter duration, low energy consumption, low capital costs and comparable efficiency, is substantiated. Priority areas of application of methods of vibration treatment of critical welded structures are highlighted: post-welding and related. The advantages and difficulties in the implementation of these methods are shown: the ability to control the efficiency of postwelding processing by changing the amplitude-frequency characteristics, increasing strength and plasticity and optimizing the geometric parameters of the weld, combining the processing time together with the welding production cycle with accompanying processing. Brief results of experimental work on the criteria of residual stresses and residual deformations for different types of welded joints, such as butt, T-bar and lap joints, and several groups of materials, such as aluminum alloys, carbon steels and stainless steels, are presented. The conclusion is made about the prospects of using post-welding vibration treatment for dimensional rigid, forming a closed contour, composed of their many parts and subassemblies of welded structures in assembly-welding special conductors or universal assembly devices, as well as about the initial reduction of residual deformations during concomitant vibration treatment of welded joints.
Digital twin in the system of external adaptive control of robot manipulators
Authors: Kubrikov M. V.
Published: June 2023

The article discusses the implementation of a digital twin in the system of adaptive control of robotic manipulators. The use of digital twins to plan, control and maintain the life cycle of production equipment forms the sustainable introduction of robotic systems into the technological processes of high-tech enterprises. The use of a digital twin in the collaboration of a robot system allows you to design more versatile workplaces and assembly lines, and optimize their workload. A new approach is proposed that allows solving problems of direct and inverse kinematics for robotic manipulators. The approach is to represent the kinematic diagram of a robotic arm with six rotational joints as a vector model. Due to the low computational load, the use of the proposed approach in control systems makes it possible to reduce delays when working in real time, with the ability to increase the number of robotic arms and control with higher accuracy.
RiasPedia sebagai Aplikasi Rekomendasi Jasa Tata Rias dengan Metode Fuzzy Tahani
Authors: Prasetyo Wahyu , Nerisafitra Paramitha
Published: June 2023

Perkembangan bisnis jasa tata rias saat ini sangat berkembang pesat dengan adanya teknologi sebagai sarana penunjang bisnis. Hal ini membuat persaingan bisnis dibidang tersebut menjadi lebih banyak. Dengan adanya banyak penyedia jasa tata rias yang menawarkan jasa membuat konsumen bingung dalam menentukan pilihan yang tepat sesuai dengan kriteria yang diinginkan seperti lokasi, harga dan ulasan dari konsumen lain yang pernah mendapatkan pelayanan. Penyedia jasa yang baik tentunya memiliki pelayanan yang baik kepada konsumen terutama dalam hal kenyamanan, dan harga yang lebih terjangkau yang membuat daya tarik tersendiri. Dalam mengetahui kualitas penyedia jasa tertentu, konsumen biasanya lebih memperhatikan ulasan dan skor rating dari konsumen yang pernah menggunakan jasa yang lebih dulu akan tetapi terkadang konsumen belum bisa memastikan secara keseluruhan dari rating yang diberikan dalam suatu aplikasi. Dengan permasalahan tersebut penelitian ini memberikan alternatif solusi yang berguna dalam menentukan penyedia jasa tata rias sesuai kriteria dengan Fuzzy Tahani dan menggunakan pendekatan analisis sentimen terhadap suatu ulasan yang positif atau negatif, data kriteria diolah untuk mendapatkan hasil data yang direkomendasikan kepada calon konsumen. Data yang disajikan memiliki nilai fire strength atau tingkat kesesuaian kriteria dengan berkisar antara 0 (nol) sampai dengan angka 1 (satu) sangat sesuai. Tujuan dalam penelitian ini adalah menerapkan logika fuzzy tahani dalam membantu memberikan rekomendasi penyedia jasa tata rias kepada konsumen sesuai dengan kriteria yang telah ditentukan. Hasil akhir penelitian ini adalah aplikasi RiasPedia yang memberikan rekomendasi dan membantu pengambilan keputusan dalam memilih penyedia jasa tata rias.
Penerapan Metode TF-IDF dan Deep Neural Network untuk Analisa Sentimen pada Data Ulasan Hotel
Authors: Adhiatma Fachriza Dian , Qoiriah Anita
Published: June 2023

Data ulasan pelanggan memainkan peran yang penting dalam dunia bisnis karena dapat digunakan oleh para pelaku usaha untuk lebih memahami pelanggan serta mengetahui kelebihan dan kekurangan dari produk yang ditawarkannya. Namun, data ulasan tersebut hadir dalam jumlah yang besar di internet dan terus bertambah setiap harinya sehingga proses analisis menjadi lebih susah jika dilakukan secara manual. Analisa sentimen merupakan teknik untuk mengklasifikasikan data-data teks kedalam berbagai kelas sentimen. Penelitian ini bertujuan untuk membuat sistem analisa sentimen untuk data perhotelan menggunakan metode TF-IDF dan deep neural network. Metode TF-IDF digunakan untuk mengubah data teks menjadi vektor numerik, sedangkan deep neural network digunakan untuk mengklasifikasikan data vektor tersebut kedalam tiga kelas sentimen, yaitu positif, negatif dan netral. Penelitian ini juga bertujuan untuk mengeksplorasi kombinasi parameter yang memberikan hasil terbaik atau biasa juga disebut dengan hyperparameter tuning. Beberapa parameter yang diuji adalah kombinasi n-gram, nilai learning rate, dan jumlah hidden layers. Dari hasil penelitian yang dilakukan, metode TF-IDF dan deep neural network terbukti mampu untuk menyelesaikan permasalahan analisa sentimen untuk data perhotelan. Selain itu, kombinasi parameter yang memberikan hasil terbaik yaitu n-gram dengan jumlah 3, nilai learning rate 0,001, dan hidden layers dengan jumlah 3.
Perbandingan Cosine Similarity dan Euclidean Distance pada Model Rekomendasi Buku dengan Metode Item-based Collaborative Filtering.
Authors: Ilyasa M Dzikri Hisyam , Yamasari Yuni
Published: June 2023

Model rekomendasi adalah metode penyaringan data atau informasi dengan menggunakan teknik analisis data untuk membantu pengguna dalam menemukan item yang diinginkan. Salah satu metode yang digunakan dalam model rekomendasi adalah item-based collaborative filtering. Metode ini merupakan teknik untuk menghitung nilai antara kesamaan item. Algoritma yang dapat digunakan untuk menghitung nilai kesamaan item pada penelitian ini adalah Cosine Similarity dan Euclidean Distance. Masalahnya adalah masih belum jelas algoritma kesamaan item mana yang lebih akurat antara model rekomendasi yang menggunakan Cosine Similarity atau Euclidean Distance. Tujuan dari penelitian ini adalah untuk mengetahui algoritma kesamaan item mana yang paling akurat antara Cosine Similarity dan Euclidean Distance. Dari hasil pengujian Mean Absolute Error (MAE) menggunakan K-Fold Cross Validation pada penelitian ini dapat disimpulkan bahwa rumus perhitungan Cosine Similarity mempunyai tingkat akurasi yang cukup baik yaitu 0.647352 dibandingkan dengan rumus perhitungan Euclidean Distance memilki nilai akurasi yaitu 0.676872 dengan skala MAE 0–1. Semakin kecil nilai MAE semakin tinggi akurasi prediksi yang dihasilkan. Hal ini menunjukan bahwa rumus perhitungan Cosine Similarity dapat menghasilkan rekomendasi yang lebih baik dari Euclidean Distance.
Analisis Sentimen Pengguna Sistem Pay Later Menggunakan Support Vector Machine Metode Pembobotan Lexicon
Authors: Wahidna Ferra Junian , Nerisafitra Paramitha
Published: June 2023

Layanan pay later sangat mudah dengan cepat  populer di masyarakat, hal ini disebabkan karena fitur ini cenderung mudah digunakan dan populer karena tertanam pada e-commerce. Banyaknya penyedia layanan pay later menyebabkan diperlukannya pemilahan penyedia paylater mana yang akan digunakan berdasarkan berbagai pertimbangan termasuk review dari pengguna lain. Di sisi lain, review pengguna lain dapat diperoleh dari Twitter. Data dari Twitter menunjukkan terdapat ribuan tweets pada tahun 2021 hingga 2022 berisikan opini masyarakat terkait penggunaan pay later. Tweets tersebut membahas tentang keunggulan, keluhan, dan ulasan dari penggunaan pay later. Namun, beberapa keunggulan, keluhan, dan ulasan tersebut banyak yang bersifat abstrak sehingga masih belum optimal pemanfaatannya. Penelitian ini bertujuan untuk mengklasifikasikan data tweet yang berkaitan dengan pay later menggunakan algoritma Support Vector Machine (SVM). Dari penelitian ini telah berhasil dibangun model klasifikasi SVM untuk kasus sentimen Shopee Paylater dan Go Paylater. Pada pemodelan sentimen Shopee Paylater diperoleh bahwa model telah dapat memprediksi kelas data uji dengan akurasi 89.74%. Pada pemodelan sentimen Go Paylater diperoleh bahwa model telah dapat memprediksi kelas data uji dengan akurasi 90.27%.

 

Kata Kunci : Analisis Sentimen, Klasifikasi, Pay later, SVM, Lexicon
Analytical Study of Survey Results of Chemical Safety and Security Curriculum in Iraqi Academic Institutions
Authors: Yousif Emad A
Published: June 2023

The survey presents a general view of the reality of chemical safety and security in educational institutions in Iraq, in which about 301 university staff from 14 Iraqi universities includes a doctorate, master's and bachelor's degree with a postgraduate student presented their opinions regarding the survey sections. This included basic information related to security and safety curricula and their teaching to students of primary and higher studies in Iraqi universities and ways of communication between universities to improve the reality of teaching and training. These institutions possess a culture of safety and optimal training methods for trainers and students. The opinions of the residents varied, which indicates the disparity of university institutions in terms of performance and infrastructure to improve the reality of security and safety in their institutions. Among the observations, the survey adopted the terms “yes” and “no” to describe the situation, and this assessment is considered relative and inaccurate. For example, if we take the question, does your institution implement security standards and safety measures? The answer will be 90% yes, with a large discrepancy between these institutions in the fact that they possess these standards. However, it requires more accurate details in describing the required cases in the survey. We suggest that the Ministry of Higher Education’s decision-makers take the results of the survey into account to develop future plans and improve the reality of security and safety. Furthermore, it is required to address the negatives and enable universities to communicate with each other to exchange experiences. It is important to take into account the adoption of the principle of transparency in the dissemination of data that would enhance aspects of education and knowledge in educational institutions.