bluuebunny/crossref_metadata_2025 huggingface dataset:
The ontogenic study of early life stages of culture-bred Nomorhamphus sp. (Zenarchopteridae) from Lindu, Central Sulawesi
Authors: Herjayanto Muh , Carman Odang , Tri Soelistyowati Dinar , Alimuddin  , Wicaksono Aryo Wenang , Arfah Harton
Published: September 2023

Nomorhamphus sp. is a freshwater fish that has been traded as an ornamental fish. This fish is unique as an endemic species with a halfbeak-like jaw and orange color on the caudal fin. However, this fish culture information needs a further information. Based on this condition, it is necessary to conduct a study as a basis for ornamental fish breeding and growing-out activities through domestication. A crucial problem in this fish is larval rearing, which can be observed through ontogeny studies. The study was conducted on the newly-born larval behavior, morphological development, andropodium development, growth, and survival rate at the early stages, namely larvae to juvenile. The results showed that the newly-born larvae of Nomorhamphus sp. Lindu had a total length of 1.6-1.8 cm. Larvae could swim four hours 22 minutes after birth and feed artemia nauplii with surface feeding type. The initial juvenile stage occurred 25 days of post-birth period with a total length of 2.0-2.2 cm. The water condition of the rearing during the study could support the larval transformation to juvenile. This study is the first report related to the aquaculture success of the early life stage of Nomorhamphus sp. Lindu at the domestication stage.
 
Keywords: andropodium, domestication, endemic halfbeak, larva development, surface feeding
 
ABSTRAK
 
Nomorhamphus sp. adalah ikan air tawar yang telah diperdagangkan sebagai ikan hias. Ikan ini memiliki keunikan pada statusnya sebagai spesies endemik, bentuk mulut menyerupai paruh setengah (halfbeak), dan warna oranye pada sirip ekor. Namun informasi budidayanya belum diketahui dengan baik. Karena itu perlu dilakukan kajian sebagai dasar dalam kegiatan pengembangbiakan dan pembesaran sebagai ikan hias melalui domestikasi. Salah satu kegiatan penting dalam budidaya yaitu pemeliharaan larva yang dapat diamati melalui studi ontogeni. Kajian pada studi awal ini dilakukan pada stadia awal hidup yaitu larva sampai juvenil. Pengamatan dilakukan pada tingkah laku larva pascalahir, perkembangan morfologi, perkembangan andropodium, pertumbuhan dan sintasan pada lingkungan budidaya. Hasil penelitian menunjukkan bahwa larva Nomorhamphus sp. Lindu yang baru dilahirkan memiliki panjang total 1,6-1,8 cm. Larva telah dapat berenang pada umur empat jam 22 menit pascalahir (pcl) dan bisa makan naupli artemia dengan tipe surface feeding. Stadia awal juvenil terlihat pada umur 25 hari pcl dengan ukuran panjang total 2,0-2,2 cm. Kondisi media pemeliharaan selama penelitian dapat mendukung kehidupan larva sampai juvenil. Penelitian ini merupakan catatan pertama terkait keberhasilan budidaya stadia awal hidup Nomorhamphus sp. Lindu pada tahap domestikasi.
 
Kata kunci: andropodium, domestikasi, ikan endemik, tipe makan permukaan, perkembangan larva
Analysis and Applications of Quantile Approach on Residual Extropy
Authors: Khammar Amir Hamzeh , Ahrari Vahideh , Amir Jahanshahi Seyed Mahdi
Published: September 2023

Extropy is a measure of the uncertainty of a random variable. Motivated with the wideapplicability of quantile functions in modeling and analyzing statistical data, in this paper, we studyquantile version of the extropy from residual lifetime variable, "residual quantile extropy" in short.Unlike the residual extropy function, the residual quantile extropy determines the quantile densityfunction uniquely through a simple relationship. Aging classes, stochastic orders and characterizationresults are derived, using proposed quantile measure of uncertainty. We also suggest some applicationsrelated to (n i + 1)-out-of-n systems and distorted random variables. Finally, a nonparametricestimator for residual quantile extropy is provided. In order to evaluate of proposed estimator, we usea simulation study.
A Discrete New Generalized Two Parameter Lindley Distribution: Properties, Estimation and Applications
Authors: Salem Manal M. , Ismail Moshira A.
Published: September 2023

In this paper, a discrete new generalized two parameter Lindley distribution is proposed. Discrete Lindley and Geometric distributions are sub-models of the proposed distribution. Its probability mass function exhibits different shapes including decreasing, unimodal and decreasing-increasing-decreasing. Our proposed distribution has only two-parameters and its hazard rate function can accommodate increasing, constant, decreasing and bathtub shapes. Moreover, this distribution can describe equi and over dispersed data. Several distributional properties are obtained and several reliability characteristics are derived such as cumulative distribution function, hazard rate function, second hazard rate  function, mean residual life function, reverse hazard rate function, accumulated hazard rate function and also its order statistics. In addition, the study of the shapes of the hazard rate function is provided analytically and also by plots. Estimation of the parameters is done using the maximum likelihood method. A simulation study is conducted to assess the performance of the maximum likelihood estimators. Finally, the flexibility of the model is illustrated using three real data sets.
Isomorphism Check for Two-level Multi-Stage Factorial Designs with Randomization Restrictions via an R Package: IsoCheck
Authors: Batra Pratishtha , Spencer Neil , Ranjan Pritam
Published: September 2023

Factorial designs are often used in various industrial and sociological experiments to identify significant factors and factor combinations that may affect the process re- sponse. In the statistics literature, several studies have investigated the analysis, con- struction, and isomorphism of factorial and fractional factorial designs. When there are multiple choices for a design, it is helpful to have an easy-to-use tool for identifying which are distinct, and which of those can be efficiently analyzed/has good theoretical properties. For this task, we present an R library called IsoCheck that checks the isomorphism of multi-stage 26n factorial experiments with randomization restrictions. Through representing the factors and their combinations as a finite projective geometry, IsoCheck recasts the problem of searching over all possible relabelings as a search over collineations, then exploits projective geometric properties of the space to make the search much more efficient. Furthermore, a bitstring representation of the factorial effects is used to characterize all possible rearrangements of designs, thus facilitating quick comparisons after relabeling.

This paper presents several detailed examples with R codes that illustrate the usage of the main functions in IsoCheck. Besides checking equivalence and isomorphism of 2^n multi-stage factorial designs, we demonstrate how the functions of the package can be used to create a catalog of all non-isomorphic designs, and good designs as per a suitably defined ranking criterion.
Nonparametric tests of independence using copula-based Renyi and Tsallis divergence measures
Authors: Mohammadi Morteza , Emadi Mahdi
Published: September 2023

‎We introduce new nonparametric independence tests based on R\'enyi and Tsallis divergence measures and copula density function‎. ‎These tests reduce the complexity of calculations because they only depend on the copula density‎. ‎The copula density estimated using the local likelihood probit-transformation method is appropriate for the identification of independence‎. ‎Also‎, ‎we present the consistency of the copula-based R\'enyi and Tsallis divergence measures estimators that are considered as test statistics‎. ‎A simulation study is provided to compare the empirical power of these new tests with the independence test based on the empirical copula‎. ‎The simulation results show that the suggested tests outperform in weak dependency‎. ‎Finally‎, ‎an application in hydrology is presented‎.
Comparing the Accuracy of Classical and Machine Learning Methods in Time Series Forecasting: A Case Study of USA Inflation
Authors: Jouilil Youness , Iaousse M'barek
Published: September 2023

This paper presents a comparison of statistical classical methods and machine learning algorithms for time series forecasting notably the Exponential Smoothing, hybrid ARIMA-GARCH model, K-Nearest Neighbors (KNN), Prophet, and Long-Short Term Memory (LSTM). The data set used in this study is related to US inflation and covers the period from 1965 to 2021. The performance of the models was evaluated using different metrics especially Mean Squared Error (MSE), Mean Absolute Error (MAE), Median Absolute Error (Median AE), and Root Mean Squared Error (RMSE). The results of the numerical comparison show that the best performance was achieved by Exponential Smoothing, followed closely by KNN. The results indicate that these two models are well-suited for forecasting inflation in the US. ARIMA-GARCH, LSTM, and Prophet performed relatively poorly in comparison. Overall, the findings of this study can be useful for practitioners in choosing the most suitable method for forecasting inflation in the US in the short-term period.
Komunikasi Krisis Kebijakan Karantina Hotel Terhadap Citra Pariwisata
Authors: Purwantoro Tono , Sukirno Zakaria Lantang
Published: September 2023

The impact of Covid-19 in Indonesia has not ended until November 28 2022 there is 36,057 people were exposed and  4,516,480 people were confirmed since the first Covid-19 declare. The government's anticipation during the January 2022 pandemic closed entry for arrivals from various countries through policy number 14 dated 13 October 2021 and No. 1 of 2022 concerning the behavior of entry points, quarantine places and RT-PCR obligations for Indonesian citizens traveling abroad for 10-14 days. International travelers, according to the Decree, are required to quarantine 5 x 24 hours for those who have been vaccinated and 14 x 24 hours from countries with a high escalation of positive cases. The policy was updated January 1 2022 for a 12x24 hour quarantine period, changing February 2022 to have an impact on the tourism industry, especially hospitality.

The hotel quarantine policy drew criticism after the Task Force issued a list of 66 hotels. Efforts to revive the hospitality industry through political economy. Public policy is the answer to the problem. Often policies conveyed through government communications foster crisis communication as a result of the contents of the message being conveyed there are irregularities. Crisis communication occurs when negative news about the difficulty and lengthy time of getting hotel quarantine colors the media pages.
Reflexões editoriais sobre a colaboração no desenvolvimento da ciência, tecnologia, inovação e de suas publicações
Authors: Lara José Edson
Published: September 2023

O desenvolvimento do conhecimento desde sempre vem ensejando possibilidades de colaboração, em seus diversos matizes. Entretanto, nunca os ambientes acadêmicos, sociais e econômicos foram tão convidativos, às ações efetivamente empreendidas e, portanto, tão promissoras, quanto em nossos dias, notadamente nas ciências básicas. A literatura nesta área vem apresentando contribuições analíticas e críticas, que fundamentam o estado da arte deste conhecimento. Assim, ressaltam suas possibilidades de fomento, bem como proporcionam resultados mais compatíveis com as necessidades sociais, humanas e econômicas dos povos (Odell, Dyer Klett (2023).O desenvolvimento do conhecimento desde sempre vem ensejando possibilidades de colaboração, em seus diversos matizes. Entretanto, nunca os ambientes acadêmicos, sociais e econômicos foram tão convidativos, às ações efetivamente empreendidas e, portanto, tão promissoras, quanto em nossos dias, notadamente nas ciências básicas. A literatura nesta área vem apresentando contribuições analíticas e críticas, que fundamentam o estado da arte deste conhecimento. Assim, ressaltam suas possibilidades de fomento, bem como proporcionam resultados mais compatíveis com as necessidades sociais, humanas e econômicas dos povos (Odell, Dyer Klett (2023).
Federalism and blame-shifting strategies in brazil: lessons from the National Museum tragedy
Authors: Ragazzo Carlos Emmanuel Joppert , Lima João Marcelo da Costa e Silva
Published: September 2023

Due to Brazil’s model of federalism, it is not uncommon for all levels of the federation to be, to some degree, involved in tragedies that occur in large metropolitan areas. This state of affairs may ultimately allow federative entities to shun responsibility for policy failure or omission by shifting blame to other federative entities and thus mitigate the effects of voter retaliation. Relying on the National Museum tragedy as a case study, we argue that the source of what we call “the blame-shifting problem” lies in the fact that two key factual assumptions of Brazilian federalism regularly fail to materialize in reality – thus creating the institutional conditions that allow blame-shifting strategies to proliferate. The result is the production of inefficient policy efforts or overall policy omission, particularly in cases involving the preservation of historical and cultural heritage.
A escola Law and Finances e o direito da insolvência brasileiro: perspectivas teóricas e práticas
Authors: Ribeiro Cardoso Henrique , Gassen Valcir , Dos Santos Neto José Leite
Published: September 2023

São várias as abordagens metodológicas para o estudo das relações entre o direito e a economia. Uma das mais influentes é Escola da Law and Finance. Nesse sentido, a finalidade desse trabalho é resgatar os aspectos teóricos dessa Escola e, após isso, promover uma análise dos estudos econômicos sobre as alterações promovidas na lei de recuperação de empresas e falências, cotejando esses resultados com os objetivos declarados dessas alterações. Inicialmente, a pesquisa orienta-se pelo estudo descritivo das características da Law and Finances e da legislação que ela influencia. Em seguida, após levantamento estatístico, analisa-se a possibilidade de as modificações legais efetuadas ocasionarem os resultados preconizados. Ao fim, será feita uma análise entre os substratos teóricos oferecidos pela Law and Finances que inspiraram as mudanças, as modificações em si, incentivadas pelo Doing Business, e a existência de causalidade ou correlação com os resultados empíricos até então levantados.
Derechos Humanos en América Latina: El “caso UP” ante la Corte Interamericana de Derechos Humanos.
Authors: Alarcón Pietro de Jesús Lora
Published: September 2023

El artículo analiza la decisión de la Corte Interamericana de Derechos Humanos en el caso Unión Patriótica – UP -vs Estado de Colombia, demostrando como a pesar de la historia del país no registrar una dictadura formal y la Constitución de 1991 ser un documento jurídico para la paz, los agentes estatales y sus aliados paramilitares ejecutaron un plan de exterminio sistemático de la oposición política. El fallo determina la responsabilidad del Estado colombiano y su acción y omisión en la expresión más dramática de intolerancia política en América Latina, ordenando un conjunto de medidas que se suman a aquellas oriundas del Acuerdo de Paz de 2016.
Resistance of breast cancer cells to paclitaxel is associated with low expressions of miRNA-186 and miRNA-7
Authors: Apollonova Vera , Plevako Daniil , Garanin Alexandr , Sidina Elena , Zabegina Lidia , Knyazeva Margarita , Smirnova Viktoria , Artemyeva Anna , Krivorotko Petr , Malek Anastasia
Published: September 2023

Aim: Neo-adjuvant chemotherapy is a common approach for the complex treatment of breast cancer (BC) and paclitaxel (PTX) is frequently included in the therapeutic regimen. However, the effect of PTX-based treatment is hard to predict precisely based on routinely used markers. As microRNAs are considered a new promising class of biomarkers, the link between miRNA expression and PTX resistance of BC cells needs to be well investigated. This study aimed at the identification of miRNAs associated with responses of BC cells to PTX.

Methods: Intrinsic PTX sensitivity and miRNA profiling were assayed in five BC cell lines to identify candidate miRNAs. Selected miRNA (n. 15) expressions were analyzed by real-time-quantitative polymerase chain reaction (RT-qPCR) in BC tissue samples (n. 31) obtained from a diagnostic biopsy. Results were analyzed in the context of the effect of two cycles of PTX and the effect of the completed scheme of neoadjuvant therapy. The study’s design facilitated the evaluation of the effect of PTX on cells and the identification of features of the microRNA expression profiles associated exclusively with sensitivity to this drug.

Results: miR-186 and miR-7 expression in BC tissues was higher in patients with better outcomes of PTX-based neoadjuvant therapy.

Conclusion: High expressions of miR-186 and miR-7 are associated with good response to PTX, whereas their low expressions may be associated with resistance to PTX in BC, indicating the possibility of developing innovative test systems for the prediction of the PTX response, which can be used before the start of neo-adjuvant chemotherapy for BC.
Tumor-intrinsic metabolic reprogramming and how it drives resistance to anti-PD-1/PD-L1 treatment
Authors: Laubach Kyra , Turan Tolga , Mathew Rebecca , Wilsbacher Julie , Engelhardt John , Samayoa Josue
Published: September 2023

The development of immune checkpoint blockade (ICB) therapies has been instrumental in advancing the field of immunotherapy. Despite the prominence of these treatments, many patients exhibit primary or acquired resistance, rendering them ineffective. For example, anti-PD-1/PD-L1 treatments are widely utilized across a range of cancer indications, but the response rate is only 10%-30%. As such, it is necessary for researchers to identify targets and develop drugs that can be used in combination with existing ICB therapies to overcome resistance. The intersection of cancer, metabolism, and the immune system has gained considerable traction in recent years as a way to comprehensively study the mechanisms that drive oncogenesis, immune evasion, and immunotherapy resistance. As a result, new research is continuously emerging in support of targeting metabolic pathways as an adjuvant to ICB to boost patient response and overcome resistance. Due to the plethora of studies in recent years highlighting this notion, this review will integrate the relevant articles that demonstrate how tumor-derived alterations in energy, amino acid, and lipid metabolism dysregulate anti-tumor immune responses and drive resistance to anti-PD-1/PD-L1 therapy.
L’hybridation des enseignements à l’université – points de définitions
Authors: Beaumatin Léa , Roiné Christophe
Published: September 2023

Cet article propose, à l’aide d’une revue de la littérature, une définition étendue de l’hybridation des cursus à l’université et de ses effets sur la situation d’enseignement et d’apprentissage. Dans un premier temps, nous présentons la typologie que Burton et d’autres chercheurs ont construit en 2011 pour classifier ces dispositifs d’hybridation selon cinq caractéristiques énoncées. Dans un second temps, nous identifions des avantages et des limites à la mise en œuvre d’un dispositif hybride, en s’appuyant sur divers travaux qui ont étudié cette question. L’objectif à travers cet article est de présenter ce qu’est un dispositif hybride, en mettant en lumière les points de vigilance à avoir lors de sa mise en place au sein de cursus universitaires.
The effect of organizational culture, supervision, and punishment on work discipline (Case study on official motorcycle dealers in Madiun City)
Authors: Dessyarti Robby Sandhi , Oktaviana Putri
Published: September 2023

Human resources are an essential factor in the company, without human resources the company's goals will not be achieved. Official motorcycle dealers in Madiun City need superior human resources, tenacious dexterity, and innovation in carrying out the goals of motorcycle dealers to achieve sales targets. An effective way to improve motorcycle sales performance is to improve work discipline. Work discipline is a rule that binds employees to always obey the company. The research objective is to prove whether there is an influence of organizational culture, supervision, and punishment on work discipline. This research was conducted on official motorcycle sales in Madiun City using the non-probability Sampling research method, the technique for determining the population using saturated samples or census with a total of 288 employees. This research method uses a quantitative approach using SmartPLS software. The results of this study show that 1) organizational culture has a positive and significant effect on work discipline. This reflects that the organizational culture at official motorcycle dealers in Madiun City is clear and the rules set have been obeyed by sales so that there is a good working relationship between all motorcycle dealer employees, 2) supervision has a positive and significant effect on work discipline. This shows that supervisors routinely carry out supervision so that it can help the employees of motorcycle dealers, and 3) supervision has a positive and significant effect on work discipline. Implications and future direction are discussed in the last section of this article.
Membangun Soft Skill Siswa SMK melalui Pelatihan Optimalisasi Pengelolaan Media Sosial Konten Pemasaran
Authors: Krissanya Nofriska , Sari Dewi Agustin Pratama , Sholikhah  , Febrilia Ika , Prabumenang Agung Kresnamurti Rivai , Sadat Andi Muhammad , Parlina Ryna , Dhinanty Raihanisa Dara
Published: September 2023

The rapid development of technology has a significant impact on human resources. Not only does it simplify and help, but it also forces human resources to have highly competitive power. In addition, developing a guaranteed world shifts the market from traditional to more digital. In the current digital era, marketing expertise in managing social media is essential. It also aligns with the needs explored by teachers at Vocational High Schools (SMK) in Jakarta, where students must be equipped with special skills to be a competitive attraction when continuing their education or entering the professional world. Therefore, social media optimization and content creation training was provided to SMK students in Jakarta. This training is hoped to open up insights and improve students' soft skills related to social media management optimization and content marketing creation.
Psychological Treatments for Hyperactivity and Impulsivity in Children with ADHD: A Narrative Review
Authors: Sadr-Salek Shayan , Costa Andreia P. , Steffgen Georges
Published: September 2023

Treatment of the ADHD types (hyperactive-impulsive, inattentive, and combined) in children has rarely been studied separately, although their prognostic courses differ widely. In addition, data show that improvements in hyperactivity/impulsivity are hard to achieve. Thus, we focused on treatments tailored for hyperactivity/impulsivity. We examined meta-analyses and systematic reviews within the inter- and intra-individual treatments and found that psychoeducation and training for parents, school-based interventions, reinforcement strategies, and neurofeedback consistently showed small to moderate effect sizes in reducing hyperactivity/impulsivity in children. Conversely, emotional self-regulation, social skills, and cognitive trainings showed unsatisfactory results. In summary, we found that the quality of usual care can be surpassed when the designated interventions are purposefully combined into a multimodal treatment program.
Distributed Robust Formation Tracking Control for Quadrotor UAVs with Unknown Parameters and Uncertain Disturbances
Authors: Xu Lin-Xing
Published: September 2023

In this paper, the distributed formation tracking control problem of quadrotor unmanned aerial vehicles (UAVs) is considered. Adaptive backstepping technology is used to design flight control schemes for quadrotor UAVs. For the position subsystem, a distributed robust formation tracking control scheme is developed to achieve formation flight of quadrotor UAVs and track the desired flight trajectory. For the attitude subsystem, an adaptive disturbance rejection control scheme is proposed to achieve attitude stabilization during UAV flight under uncertain disturbances. Compared with the existing results, the novelty of this paper is that the proposed formation control scheme does not require the use of the quadrotor model parameters. Finally, a quadrotor UAV swarm system is used to verify the effectiveness of the proposed control scheme.
Study on the Shear Resistance Performance of Grouped Stud Connectors
Authors: Lu Wenru , Huang Yuanming , Xu Wenhan
Published: September 2023

In order to further investigate the study of the effect of grouped stud effect on the force properties of stud connector, based on the premise that the correctness of the finite element simulation method in this paper, finite element modeling of grouped stud connectors was developed, the grouped stud effect and its sensitivity factors were analyzed, to validate the recommended formula for calculating the shear capacity of grouped stud connectors. Results show that the number of grouped stud rows and row spacing have a significant effect on the grouped stud effect, and the unevenness coefficient of grouped stud force Ⅰ is negatively correlated with the number of grouped stud rows as well as the grouped stud row spacing. For grouped stud connectors with commonly used concrete grades greater than C50 and height-to-diameter ratios greater than 4 in steel-concrete composite structural bridges, which is insensitive to changes in the concrete strength grades and the length of the studs. The direction of force transmission for the grouped stud changes with the change of loading angle, and the unevenness coefficient of force for the grouped stud will therefore be reduced. By comparing the results of the 62 existing groups of grouped stud connectors push-out tests, the mean value of the ratio of tested to calculated values is found to be 1.12, the variance is 0.023, the dispersion is small, it is shown that the recommended formula has a high degree of accuracy. The results of this paper can be used as a theoretical basis for the study of the shear stress performance of grouped stud connectors.
Predicting Merger and Acquisition Deal Completion and Stock Movement with Stance Detection
Authors: Leyden Connor , Chen Bruce , Chauhan Aadi , Au-Yeung Scott , Colak Mehmet
Published: September 2023

Abstract—Annually, approximately 500,000 Merger and Ac- quisition (M&A) transactions are disclosed globally, each trans- action inciting substantial perturbations to the associated com- panies’ equity prices. The probability of an M&A transaction’s closure, as perceived by the public, inherently influences the stock price of the target company leading up to the proposed date of the deal. Given the recent advancements in the realm of Natural Language Processing (NLP), we propose an empirical investigation into the correlation between digital dialogue sur- rounding M&A transactions and consequent movements in the stock prices of involved companies. Utilizing transformer-based encoder-only architectures, we fine tune a stance detection model on an extensive dataset, amassed from digital communication platforms, featuring public discourse related to five historical M&A transactions. Ultimately, we achieved 70% accuracy on deal-completion stance detection using the Roberta-base model. We subsequently employ the aggregated the public sentiment towards the completion or termination of a proposed M&A transaction to model stock price movement. Utilizing a multitude of time-series based approaches, we achieve a mean absolute error of 2.29 USD for next-day price prediction and 3.40 USD for next-week price prediction. Ultimately, we find an existing but tenuous relationship between online discourse and the price trajectory of target companies, ultimately highlighting the complex social and economic phenomena behind M&A deals.Index Terms—Mergers and Acquisitions, Stock prediction, su- pervised learning, neural networks, Recurrent Neural Network, LSTM, stance detection, transformers
Study on Community Detection Method for Morning and Evening Peak Shared Bicycle Trips in Urban Areas: A Case Study of Six Districts in Beijing
Authors: Sun Yao , Wen Zheng , Tian Dongwei , Zhang Man , Hou Yue
Published: September 2023

Examining the clustering characteristics and fluctuations within urban areas during peak hours through the lens of bike-sharing is of utmost importance in the optimization of bike-sharing systems and urban transportation planning. This investigation adopts the principles of urban spatial interaction network construction and employs streets as the fundamental units of analysis to model bike-sharing activities during morning and evening peak hours within Beijing's six central districts. Subsequent to this, a comprehensive analysis of the network's structural attributes was carried out. A walktrap method rooted in modularity analysis was introduced to discern and scrutinize the clustering patterns and characteristics of communities within the network across different temporal intervals. Empirical findings reveal a predominant usage pattern of shared bicycles for short-distance travel during both morning and evening peak hours. Notably, distinctive community structures manifest during these periods, characterized by two large communities and multiple smaller ones during the morning peak, while the evening peak showcases a single large community alongside several medium-sized and smaller ones. Moreover, the extended interaction radius points to an expanded geographic range of interactions among streets. These findings bear significant implications for the management of urban transportation, bike-sharing enterprises, and urban residents, proffering valuable insights for the optimization of bike-sharing schemes and transportation strategies.
Anomalous Change Detection in Drilling Process Using Variational Autoencoder with Temperature Near Drill Edge
Authors: Suwa Haruhiko , Oda Kazuya , Murakami Koji
Published: September 2023

The different flexibility and diversity requirements for respective manufacturing units have made modern cutting tool management much more crucial and complicated, as a greater variety of tools and more frequent tool changes are required to enhance production efficiency and avoid unplanned manufacturing downtime. Developing in-process anomalous change detection methods has been identified as an essential challenge. Machine learning techniques have been widely applied in tool condition monitoring and anomalous change detection. As anomaly data is rare in manufacturing processes, supervised machine learning approaches (such as regression and classification) are not applied to the anomalous change detection problem. Rather, self-supervised machine learning (a representative type of unsupervised machine learning) is applied. This study describes a variational autoencoder (VAE) neural network and proposes a VAE-based method for tool condition monitoring and change detection in a drilling process using the temperature near a drill edge. The proposed VAE evaluates the drill tool condition based on the reconstruction error between the input temperature and its estimate per a drill unit process through the trained network. Computational simulations demonstrate that the proposed VAE network model can avoid overfitting to the anomaly data and that its expressive power is greater than that of the conventional autoencoder model.
Study on the Surface Enhancement of Thin-Walled Metallic Materials Using a Novel Double-Side Burnishing Tool
Authors: Yamazaki Hibiki , Zhu Jiang , Tanaka Tomohisa
Published: September 2023

Burnishing is a surface finishing process to produce a smooth surface. Since it can improve the mechanical properties of the material, such as surface hardness, wear resistance, and fatigue strength, in one process, it has been widely used in industry to enhance the surface quality of mechanical parts. However, due to the high burnishing force, it is difficult to use the process of thin materials, because such materials can easily be deformed in the process. In this research, a novel double-sided burnishing (DSB) tool that can process the thin plate material from both sides is designed and fabricated. The developed DSB tool symmetrically moves the burnishing tips on both sides with a single output to facilitate position control. The burnishing forces from the two sides cancel each other, and the moment that causes bending deformation is suppressed during the processing. Different thin plate metallic materials are processed using the developed tool, it is confirmed that deformation during burnishing is suppressed. By investigating the surface properties of the processed specimen, it is found that surface roughness, surface hardness, tensile strength, and fatigue strength can be improved by using the developed DSB tool. This makes it possible to process complicated, thin-walled parts, such as engine and turbine blades, which are supposed to have great potential applications in the automobile and aerospace industries.
Shell Forming for Improving Additional Cutting Properties of Additively Manufactured Parts
Authors: Sawano Hiroshi , Kodama Yasuhiro
Published: September 2023

Additive manufacturing (AM) has become a major manufacturing technology in recent years. In the fused deposition modeling (FDM) method, two-layered parts with a shell structure and an internal structure with gaps are often manufactured. When cutting is applied to such parts, the internal structure is exposed and the surface texture and strength deteriorate. Therefore, it is necessary to remanufacture the parts to correct the shape or fill the inside with resin for additional machining. However, if parts are remanufactured or filled with resin, the amount of material used increases, along with the processing cost and environmental load. If the characteristics of additional machining can be improved, the amount of material used, the processing cost, and environmental load can be reduced. Therefore, in this study, we proposed a shell forming method to form a shell structure by processing the surface of the exposed internal structure with a rod. Shell forming experiments were then conducted to evaluate the characteristics of the method. It was found that the shell thickness can be increased by increasing the shell forming depth, and the difference from the theoretical shell thickness grows larger when the shell forming depth increases. Increasing the rotation speed of the rod was effective in increasing the shell thickness. In addition, as a result of the additional cutting experiment on an AM part, it was confirmed that the properties of the additional cutting surface can be improved using the proposed method.
Feasibility of 8-Shaped Motion Test for Five-Axis Machining Center
Authors: Ihara Yukitoshi , Kajino Souma , Inoue Yuto
Published: September 2023

ISO 10791-7, which specifies the machining accuracy test standard for machining centers, and ISO 10791-6, which specifies the interpolation motion test standard, were revised in 2014 to include five-axis machining centers (5-axis MCs). In addition, cone frustum test, which has been used as the National Aerospace Standard (NAS), was revised and introduced in these ISO standards. However, prior to the establishment of these standards, an aircraft manufacturing company in China proposed S-shaped machining test to measure the accuracy of the test piece of an aircraft. This was adopted as an informative annex of ISO 10791-7 in 2020. Furthermore, in 2019, China proposed a method related to S-shaped machining test and a method of 8-shaped interpolation motion test. Since the S-shaped test requires high acceleration and deceleration in some sections, the test results depend on the performance of the computer-aided manufacturing (CAM) software; therefore, it is not efficient in determining the accuracy of the machine tools. In contrast, in the 8-shaped motion test, the tip of the spindle moves based on a sine curve; consequently, high acceleration/deceleration does not occur. Since the tip of the cutting tool is fixed, a device called R-test is used to measure the position of the center of reference ball using three displacement sensors. In this study, we have discussed the feasibility and problems of the 8-shaped motion test. First, the motion of the machine in the figure “8” motion test is clarified. Next, the definition of the parameters necessary to create the NC programs is outlined. In addition, we have proposed a method in which suitable conditions are set for simultaneous 5-axis feed on a 5-axis MC. Finally, the results of an actual test are applied to the 5-axis MC to confirm that no major problems exist.
Simple Measuring of Positioning Accuracy for Machining Centers Using Image Matching
Authors: Saito Akinori , Jimba Yoji
Published: September 2023

Machining centers have played a central role in the production field for nearly half a century. Accuracy inspections of machining centers are performed as per ISO standards; however, the accuracy performance of machining centers is often not checked directly after delivery to the factory unless there is a collision between a tool and a workpiece or product failure. Although positioning accuracy is fundamental to the performance of machining centers, the need for expensive laser interferometers and the time required for the setup present barriers to owning and inspecting them. This study proposes a simple method for measuring positioning accuracy that does not require a time-consuming setup of the measurement device or expensive devices. Therefore, the user of the machine tool can own and use the proposed method for daily inspection to identify changes in the positioning accuracy of the numerically controlled machine tool more quickly.
On Thermal Positioning Error of a Planar Robot Arm over Entire Workspace
Authors: Ibaraki Soichi , Kawano Kandai
Published: September 2023

Robot links are typically subjected to larger thermal deformations than machine-tool structures. In this study, the thermal effect on the two-dimensional (2D) positioning error of a planar robot arm over its entire workspace was investigated. It was experimentally verified that the Denavit–Hartenberg (DH) parameters, namely the link lengths and angular offset of the rotary axis, could be the key contributors to the thermal variation in the 2D positioning error. The experiment revealed that the variation in the angular positioning deviations of the rotary axes was marginal. This paper presents an on-machine test to identify the link lengths and the angular offset by probing an artifact bar of a pre-calibrated length. To compensate for the thermal influence, it is effective to identify the DH parameters by periodically performing the proposed test.
Eksistensi Cerita Rakyat dan Fungsinya dalam Kehidupan Masyarakat di Manggarai Timur
Authors: Ni Wayan Sumitri
Published: September 2023

Tulisan ini membahas eksistensi cerita rakyat dan fungsinya dalam kehidupan masyarakat di Manggarai Timur yang kini semakin dilupakan terutama oleh para generasi mudanya. Karenanya penelitian ini dilakukan. Fokus kajiannya pada aspek isi salah satu cerita mitos yaitu Tiwu Inding yang dikaji secara tekstual dalam perspektif etnolinguistik dan foklor untuk mengungkap kebermaknaan cerita rakyat dalam fungsinya sebagai pedoman dalam kehdupan masyarakat pendukungnya yaitu masyarakat Manggarai Timur. Data diperoleh secara etnografi melalui metode simak-catat dan wawancara, serta didukung oleh studi kepustakaan. Data dianalisis secara deskriptif-kualitatif dengan metode induktif. Temuan menunjukkan bahwa keberadaan cerita rakyat di Manggarai Timur memiliki berbagai versi cerita karena diwadahi oleh enam bahsa lokal yang berbeda yaitu bahasa Manggarai, Manus, Mbaen, Rongga, Rajong dan Kepo. Cerita rakyat tersebut memiliki makna penting bagi kehidupan masyarakat pemiiknya dalam fungsinya sebagai sarana hiburan, religius, pemersatu dan pemertahanan nilai budaya serta sebagai sarana kontrol sosial.
A Study of the Evolution of Zhuge Liang’s Image in English Versions of Sanguo Yanyi from the Perspective of Retranslation Hypothesis
Authors: Huang Mingzhu , Gu Lifeng , Wang Juan
Published: September 2023

Sanguo Yanyi, one of the renowned masterpieces in Chinese literature, has been translated into over twenty other languages, including three complete English translations produced separately in the 1920s, 1990s and 2010s. Throughout the historical process of these English translations, it has been observed that the character portrayals vary due to different social and cultural backgrounds. This research focuses specifically on the character of Zhuge Liang and aims to examine the evolution of his portrayal by comparing the strategies employed by translators in these three English translations. Adopting a diachronic perspective, the study collects descriptions of Zhuge Liang’s image from each translation and explores the underlying reasons for the differences in his image construction. The findings not only shed light on the evolution of Zhuge Liang’s image but also confirm the supplementarity nature of the retranslation hypothesis. By revealing how social and cultural factors influence character interpretation, this study enhances our understanding of the intricate relationship between translation and the construction of literary characters
Effects of Early Hospital-Based Palliative Care Consultation on Length of Stay and Costs of Care at Indonesian Tertiary Hospital
Authors: Putranto Rudi , Shatri Hamzah , Rajabto Wulyo , Sumariyono Sumariyono , Faisal Edward , Sihwastuti Sihwastuti
Published: September 2023

Despite the numerous benefits of palliative care for cancer patients, there have been few studies on palliative care services for terminal cancer patients, particularly near the end of life. This study aimed to evaluate whether there were differences in length of stay and cost of care associated with how early or late a patient received palliative care intervention. Another objective was to compare the length of stay and cost of care of those who received palliative care intervention and those who did not. This study used a cohort retrospective design at Hospital A, Jakarta, Indonesia, from January to December 2019. The diagnosis of terminal cancer was based on medical records. Data on length of stay and costs of care were based on medical records and finance billing. The hospitalized terminal cancer patients (392) were recruited by consecutive sampling. The length of stay and costs of care for patients with advanced cancer who received palliative care consultations were longer and higher than for patients who did not receive them. However, if palliative care consultation is provided early, the increase in length of stay and costs are less.
Access to Social Media, Knowledge, and Acceptance of COVID-19 Post-Vaccination Health Protocols: A Cross-Sectional Study
Authors: Armini Ni Luh Gde , Lubis Dinar Saurmauli , Widarini Ni Putu
Published: September 2023

The health protocols recommended by the health authorities still need to be practiced after having the COVID-19 vaccine. Education on the prevention of COVID-19 infection needs to continue to protect people from the disease. This study aimed to determine the factors associated with adhering to COVID-19post-vaccination health protocols in people aged 18 years and over in the South Denpasar Subdistrict. This cross-sectional study comprised a sample of 147 people who were selected by incidental sampling. The data were obtained using questionnaires from July to August 2022 and examined with bivariate and multivariate analysis. Most participants were female, private employees, went to senior high school, accessed social media, had high knowledge of COVID-19, and properly followed health protocols post-vaccination. However, only 34.7% of participants accepted the government’s policy for preventing COVID-19. Multivariate analysis showed that good social media access (aOR = 11.9; 95% CI = 3.6–39.8; p-value<0.001), high knowledge of COVID-19 infection (aOR= 2.6; 95% CI = 1.0–7.4; p-value = 0.044) and high acceptance of government policies (aOR = 4.1; 95% CI = 1.5–11.6; p-value = 0.006) were associated with the application of health protocols post-vaccination in people aged 18 years and over. In the studied group, having access to trusted social media, knowledge, and public acceptance of government policies led to adhering to the recommended health protocols post-vaccination.
Indonesia’s COVID-19 Trend After the End of a Public Health Emergency of International Concern: Preparation for an Endemic
Authors: Novarisa Nessa , Helda Helda , Mulyadi Rahmad
Published: September 2023

Three years into the pandemic, the World Health Organization revoked the COVID-19 public health emergency of international concern on May 5, 2023. This decision sparked debate, notably around the possibility of a surge in cases due to the SARS-CoV-2 mutations. To manage this transition, the Indonesian government enacted stringent controls on case numbers. This case series study provided an overview of COVID-19 case trends in Indonesia following the revocation of public health emergency of international concern status by the World Health Organization. Data were collected for 5 weeks after the statement (May 6–June 10, 2023) from the COVID-19 Task Force’s official online platform of the Indonesian Ministry of Health. The trends were monitored in daily confirmed, active, recovered, and death cases, and analyzed the data using Microsoft Excel and Stata 16. The findings indicated a positive trend for Indonesia, with decreased daily confirmed cases (89.42%) and active cases (44.16%). Recovered cases accounted for 97.47%, higher than the global average (96%). Unfortunately, the death rate (2.38%) exceeded the global statistic (1%). These results highlighted the need for sustained vigilance, enhancement of the 3T strategy (testing, tracing, and treatment), and wider vaccination coverage. It remains critical to uphold the 3M protocols—mask-wearing, physical distancing, and hand hygiene—to prevent a potential rebound in cases, even without the public health emergency of international concern status,as the situation transitions toward endemic COVID-19.
Rehabilitation Management to Improve Respiratory Function in Severe and Critical COVID-19 Survivors: A Literature Review
Authors: Wijaya Sergio Aldira , Nazir Arnengsih , Nusjirwan Rama
Published: September 2023

Post-acute COVID-19 symptoms impact the quality of life, and pulmonary rehabilitation is recommended. This study explored the implementation, outcomes, and barriers of such programs for severe and critical COVID-19 survivors, focusing on improving respiratory function. Articles search was conducted from October to November 2021 through Google Scholar and PubMed databases. Pulmonary rehabilitation programs in severe and critical cases of COVID-19 survivors have a similar purpose in other respiratory cases. Pulmonary rehabilitation programs, including breathing, resistance, stretching, cardiorespiratory endurance exercises, respiratory physiotherapy, relaxation techniques, and education, significantly improved lung function and reduced symptoms. No studies exploring barriers to pulmonary rehabilitation were found. In conclusion, pulmonary rehabilitation programs for COVID-19 survivors with severe and critical cases have improved respiratory functions.