bluuebunny/crossref_metadata_2025_split huggingface dataset:
Control of Dual-Sourcing Inventory Systems Using Recurrent Neural Networks
Authors: Böttcher Lucas , Asikis Thomas , Fragkos Ioannis 
Published: July 2023

A key challenge in inventory management is to identify policies that optimally replenish inventory from multiple suppliers. To solve such optimization problems, inventory managers need to decide what quantities to order from each supplier given the net inventory and outstanding orders so that the expected backlogging, holding, and sourcing costs are jointly minimized. Inventory management problems have been studied extensively for more than 60 years, and yet even basic dual-sourcing problems, in which orders from an expensive supplier arrive faster than orders from a regular supplier, remain intractable in their general form. In addition, there is an emerging need to develop proactive, scalable optimization algorithms that can adjust their recommendations to dynamic demand shifts in a timely fashion. In this work, we approach dual sourcing from a neural network–based optimization lens and incorporate information on inventory dynamics and its replenishment (i.e., control) policies into the design of recurrent neural networks. We show that the proposed neural network controllers (NNCs) are able to learn near-optimal policies of commonly used instances within a few minutes of CPU time on a regular personal computer. To demonstrate the versatility of NNCs, we also show that they can control inventory dynamics with empirical, nonstationary demand distributions that are challenging to tackle effectively using alternative, state-of-the-art approaches. Our work shows that high-quality solutions of complex inventory management problems with nonstationary demand can be obtained with deep neural network optimization approaches that directly account for inventory dynamics in their optimization process. As such, our research opens up new ways of efficiently managing complex, high-dimensional inventory dynamics. History: Accepted by Ram Ramesh, Area Editor for Data Science & Machine Learning. Funding: This work was supported by Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (NCCR Automation) [Grant P2EZP2 191888] and the Army Research Office [Grant W911NF-23-1-0129]. Supplemental Material: The software that supports the findings of this study is available within the paper and its Supplemental Information ( https://pubsonline.informs.org/doi/suppl/10.1287/ijoc.2022.0136 ) as well as from the IJOC GitHub software repository ( https://github.com/INFORMSJoC/2022.0136 ). The complete IJOC Software and Data Repository is available at https://informsjoc.github.io/ .
Systemic cisplatin increases the number of patients showing positive off-frequency masking audiometry
Authors: Hiraumi Harukazu , Oikawa Shin-ichi , Shiga Kiyoto , Sato Hiroaki 
Published: July 2023

Objective
The study aimed to evaluate the effect of systemic cisplatin administration on off-frequency masking audiometry.

Methods
Among 26 patients receiving systemic cisplatin, 48 ears were included in the analysis. All patients underwent pure-tone audiometry with ipsilateral narrow-band masking noise (off-frequency masking audiometry). In the off-frequency masking audiometry, 70 dBHL band-pass noise (center frequency 1000 Hz, 1/3 octave bandwidth) was administered to the tested ear. The acquired thresholds were compared to those of standard pure-tone audiometry, and threshold elevations greater than 10 dB were regarded as significant. The number of patients showing abnormal threshold elevation was compared between before and after the cisplatin administration.

Results
Before cisplatin administration, 91.7, 93.8, 97.9, and 93.8% of ears showed normal off-frequency masking audiometry outcomes at 125, 250, 6000, and 8000 Hz, respectively. After cisplatin administration, a higher number of patients showed abnormal off-frequency masking audiometry outcomes. This change was more prominent with increasing doses of cisplatin. After the cisplatin administration of 100∼200 mg/m2, the prevalence of patients with normal off-frequency masking audiometry outcomes was 77.3, 70.5, 90.9, and 88.6% at 125, 250, 6000, and 8000 Hz, respectively. At 250 Hz, the change was statistically significant (p = 0.01, chi-squared test).
FIRST RECORD OF DIOPATRA CLAPAREDII GRUBE, 1878 (ONUPHIDAE, POLYCHAETA) FROM INDONESIAN WATERS, WITH SOME NOTES ON ITS ECONOMIC IMPORTANCE
Authors: Pamungkas Joko , Atang Atang , Wibowo Eko Setio 
Published: July 2023

Diopatra claparedii Grube, 1878, is a common polychaete species that occurs in Southeast Asian countries, including Malaysia, Singapore, Thailand, and the Philippines. However, the occurrence of this species in Indonesia has never been recorded. In the present study, we identified the presence of D. claparedii in the eastern part of the Segara Anakan Lagoon in Cilacap, Central Java Province. Thespecies is characterized as having distinct pectinate chaetae with funnel-like combs. The worms, like in some other Asian countries, are commercially exploited for use as fishing bait. The distributional map of this species is provided in this article.
Translation, cultural adaptation, and validation of the Indonesian version of Pediatric Quality of Life Inventory Rheumatology Module (PedsQL-RM) questionnaire for children with rheumatic diseases
Authors: Ilmana Ganda , Munasir Zakiudin , Chozie Novie Amelia , Medise Bernie Endyarni 
Published: July 2023

Background Quality of life is an important outcome in the management of children with chronic conditions such as rheumatic diseases. The Pediatric Quality of Life Inventory Rheumatology Module (PedsQL-RM) questionnaire has been proven valid and reliable, but a validated Indonesian version of the questionnaire is not yet available.
Objective To translate the PedsQL-RM into the Indonesian language, perform a transcultural adaptation, and assess its validity.
Methods A cross-sectional study was performed in patients aged 2 to 18 years with systemic lupus erythematosus (SLE) or juvenile idiopathic arthritis (JIA) in Dr. Cipto Mangunkusumo Hospital, Jakarta. The initial phase of the study consisted of forward translation from the original English version into Indonesian, synthesis by experts, backward translation, and cognitive debriefing, resulting in the final version of the questionnaire. The second phase was testing the final questionnaire on patients in each age group and their parents. Tests were carried out in two sessions with an interval of 2 to 4 weeks. The questionnaire consisted of a child report and a parent report, each measuring five dimensions: pain and hurt, activities, treatment, worry, and communication. We subsequently assessed validity and reliability of each dimension in the child and parent reports for the child and teen age groups. Validity was expressed as correlation coefficient (r) between dimension scores with the total score.
Results The finalized Indonesian questionnaire was completed by 53 children aged 2-18 years with SLE or JIA and their parents. Due to small numbers of subjects in the younger age ranges, analysis was only performed in the 8-to-18-year age group. Validity varied from good to very good (r = 0.437 to 0.910) for the child report and from poor to good (r = 0.153 to 0.808) for the parent report. The questionnaire was deemed reliable, with a Cronbach’s alpha of 0.755 to 0.785.
Conclusion The Indonesian version of the PedsQL-RM is valid and reliable for assessing quality of life in children aged 8 to 18 years with rheumatologic disease. Further study is needed to assess the validity and reliability of the tool for children aged 2 to 7 years.
Differences in induction phase outcomes of acute lymphoblastic leukemia between well-nourished and malnourished pediatric patients
Authors: Simarmata Meilani Puspasari , Rosdiana Nelly , Wahyuni Arlinda Sari 
Published: July 2023

Background Leukemia is the most common malignancy in childhood. Malnutrition is the main nutritional disorder occurring in children with cancer. Nutritional supportive care is a medical modality that has been associated with improved tolerance to chemotherapy, survival, and quality of life, as well as decreased risk of infection in children undergoing cancer therapy.
Objective To examine differences in induction phase outcomes in well-nourished and malnourished pediatric acute lymphoblastic leukemia (ALL) patients.
Methods This prospective study was conducted in newly-diagnosed ALL patients aged 1 to 18 years who underwent induction phase chemotherapy at Haji Adam Malik General Hospital, Medan, North Sumatera. Mid-upper arm circumference (MUAC) was used to determine nutritional status. Patient characteristics such as complete blood count (CBC) at the time of diagnosis, occurrence of febrile neutropenia, duration of induction, length of hospital stay, and remission status were collected. We analyzed differences in CBC, frequency of febrile neutropenia, as well as duration of induction and hospital stay between well-nourished and malnourished patients. We also assessed the difference in remission attainment between the two groups.
Results There were 21 subjects in each group. Compared to well-nourished subjects, malnourished ones had a higher median incidence of febrile neutropenia [1 (range 0 to 30) vs. 3 (range 0 to 4); P=0.04], longer mean induction duration [64.2 (SD 11.5) vs. 71.2 (SD 10.6) days; P=0.046], and longer median hospital stay [30 (range 19 to 56) vs. 36 (range 22 to 49) days; P=0.001] compared to well-nourished subjects. There was no significant difference in CBC parameters and remission status after induction between the two groups.
Conclusion Malnourished pediatric ALL patients had a significantly higher incidence of febrile neutropenia, duration of induction phase, and duration of hospital stay compared to well-nourished ALL patients.
Effects of lung recruitment maneuvers using mechanical ventilator on preterm hemodynamics
Authors: Perma Iskandar Adhi Teguh , Kautsar Ahmad , Rahmadhany Anisa , Kaban Risma Kerina , Supriyatno Bambang , Prihartono Joedo , Santoso Dewi I. , Yuniarti Tetty , Advani Najib , Djer Mulyadi M. , Sutjipto Fiolita I. 
Published: July 2023

Background Lung recruitment maneuvers (LRMs) are a strategy to gradually increase mean positive airway pressure (MAP) to expand the alveoli, leading to decreased pulmonary vascular resistance and increased cardiac output (CO). However, the hemodynamic impact of LRM using assist control volume guarantee (AC-VG) ventilator mode done in preterm infants born at 24 to 32 weeks’ gestation, especially in the first 72 hours of life, remains unknown.
Objective To determine the effect of LRM on right- and left cardiac ventricular output (RVO and LVO), ductus arteriosus (DA) diameter and its pulmonary hypertension (PH) flow pattern, as well as superior mesenteric artery (SMA) flow.
Method This randomized, controlled, single-blinded clinical trial was performed in 24-32-week preterm neonates with birth weights of >600 grams. Subjects were allocated by block randomization to the LRM and control groups, each containing 55 subjects. We measured RVO, LVO, DA diameter, PH flow pattern, and SMA resistive index (RI) at 1 and 72 hours after mechanical ventilation was applied. We analyzed for hemodynamic differences between the two groups.
Results During the initial 72 hours of mechanical ventilation, there were no significant differences between the control vs. LRM groups in mean changes of LVO [41.40 (SD 91.21) vs. 15.65 (SD 82.39) mL/kg/min, respectively; (P=0.138)] or mean changes of RVO [65.56 (SD 151.20) vs. 70.59 (SD 133.95) mL/kg/min, respectively; (P=0.859)]. Median DA diameter reduction was -0.08 [interquartile range (IQR) -0.55; 0.14] mm in the control group and -0.10 (IQR -0.17 to -0.01) mm in the LRM group (P=0.481). Median SMA resistive index was 0.02 (IQR -0.16 to 0.24) vs. 0.01(IQR -0.20 to 0.10) in the control vs. LRM group, respectively. There was no difference in proportion of pulmonary hypertension flow pattern at 72 hours (25.4% vs. 20% in the control vs. LRM group, respectively) (P=0.495).
Conclusion When preterm infants of 24-32 weeks gestational age are placed on mechanical ventilation, LRM gives neither additional hemodynamic benefit nor harm compared to standard ventilator settings.
Postendoscopy Care for Patients Presenting With Esophageal Food Bolus Impaction: A Population-Based Multicenter Cohort Study
Authors: Guo Howard , Hamilton Patrick , Enns Edwin , Gupta Milli , Andrews Christopher N. , Nasser Yasmin , Bredenoord Albert J. , Dellon Evan S. , Ma Christopher 
Published: July 2023

INTRODUCTION:
Esophageal food bolus impactions (FBI) are a common gastrointestinal emergency. Appropriate management includes not only index endoscopy for disimpaction but also medical follow-up and treatment for the underlying esophageal pathology. We evaluated the appropriateness of postendoscopy care for patients with FBI and assessed patient-related, physician-related, and system-related factors that may contribute to loss to follow-up.

METHODS:
We conducted a retrospective, population-based, multicenter cohort study of all adult patients undergoing endoscopy for FBI in the Calgary Health Zone, Canada, from 2016 to 2018. Appropriate postendoscopy care was defined by a composite of a clinical or endoscopic follow-up visit, appropriate investigations (e.g., manometry), or therapy (e.g., proton-pump inhibitors or endoscopic dilation). Predictors of inappropriate care were assessed using multivariable logistic regression.

RESULTS:
A total of 519 patients underwent endoscopy for FBI: 25.2% (131/519) did not receive appropriate postendoscopy care. Half of the patients (55.3%, 287/519) underwent follow-up endoscopy or attended clinic, and among this group, 22.3% (64/287) had a change in their initial diagnosis after follow-up, including 3 new cases of esophageal cancer. Patients in whom a suspected underlying esophageal pathology was not identified at the index endoscopy were 7-fold (adjusted odds ratio 7.28, 95% confidence interval 4.49–11.78, P < 0.001) more likely to receive inappropriate postendoscopy follow-up and treatment, even after adjusting for age, sex, rural residence, timing of endoscopy, weekend presentation, and endoscopic interventions.

DISCUSSION:
One-quarter of patients presenting with an FBI do not receive appropriate postendoscopy care. This is strongly associated with failure to identify a potential underlying pathology at index presentation.
Qualitative Stadtentwicklungsplanung unter neuen Anforderungen
Authors: Börstinghaus Wolfgang , Schroeders Peter 
Published: July 2023

Daß Stadtentwicklungsplanung immer schon veränderten Rahmenbedingungen und Anforderungen ausgesetzt war, zeigt der Vergleich von in der Vergangenheit zu diesem Thema erstellten Planwerken mit den tatsächlich eingetretenen Realitäten. Durch die Wiedervereinigung hat diese Unsicherheit eine zusätzliche Dimension und durch die aktuell negative Konjunkturentwicklung einen nicht gerade optimistischen Rahmen bekommen.Veränderte Anforderungen werden heute aber auch von Planern selbst an Entwicklungsplanung gestellt. Gerade vor dem Hintergrund der akuten Unübersichtlichkeit muß sie sich auf verschiedene mögliche Entwicklungsalternativen einstellen, kann nicht erst einen langen Planungszyklus abarbeiten und dann die Entwicklung auf sich zukommen lassen. Gerade jetzt sollte ein Plan nicht nur für das Bücherregal bestimmt sein. Stadtentwicklung will die Umsetzung mitdenken und angehen.Dazu wird diese Planung in Flensburg aktuell viel stärker als in der Vergangenheit als ein kommunikativer Prozeß organisiert, der in seinen Ansatz recht früh auch Akteure außerhalb der Verwaltung einzubinden sucht. Das Ziel, zu einer Kooperation zu kommen, soll in der Folge an konkreten Pilotprojekten quasi „erlernbar“ werden. Die vorhandenen Teilkonzepte zur Stadtentwicklung und Flächennutzungsplanung werden dabei selbst als Instrumente eingesetzt, indem bestimmte gewünschte Entwicklungsvorstellungen an private Kooperationspartner herangetragen und als Projekte konsequent angestoßen und angeschoben werden.Auf seiten der Verwaltung verschwimmt damit die klare Aufgaben- und Kompetenzunterscheidung von Stadtplanung und Stadtentwicklung, von Stadtentwicklungs- und Flächennutzungsplanung, von Planung, Moderation und Projektmanagement. Resultat ist ein komplexes Geflecht von Konzepten, Plänen und Projekten. Diese Tendenz wird in der aktuellen Diskussion um Stadtentwicklungsplanung als „Strategische Planung“ thematisiert, ein Ansatz, der sich noch stärker – und das ist nicht nur ein Nebeneffekt – an den vorhandenen Strukturen von Verwaltung reibt als die in der Vergangenheit schon nicht konfliktfreie Forderung nach interdisziplinärer, fach(ämter)übergreifender Planung und Problembearbeitung.
The stability of C-peptide and insulin in plasma and serum samples under different storage conditions
Authors: Nkuna Delhia X. , Khoza Siyabonga P. , George Jaya A. , Maphayi Mpho R. 
Published: July 2023

Abstract

Objectives
C-peptide and insulin are peptide hormones and their stability is affected by a number of pre-analytical factors. The study aimed to investigate the impact of sample type, storage temperature and time delays before centrifugation and analysis on the stability of C-peptide and insulin.

Methods
Ten healthy non-diabetic adults in fasting and non-fasting state were enrolled. 40 mL of blood was collected from each participant into SST and dipotassium EDTA tubes. Samples were centrifuged immediately or at timed intervals (8, 12, 48 and 72 h). After baseline measurements on the Roche Cobas e602 analyzer using electrochemiluminescence immunoassays, aliquots were stored at room temperature (RT), 2–8 and −20 °C for 4 h to 30 days. The percentage deviation (PD) from baseline was calculated and a change greater than desirable biological variation total error was considered clinically significant.

Results
C-peptide was more stable in separated serum than plasma (PD of −5 vs. −13 %) samples stored at 2–8 °C for 7 days and was most unstable at RT when centrifugation was delayed (PD −46 % in plasma and −74 % in serum after 48 h). Insulin was more stable in plasma than in serum under the different storage conditions with a minimum PD of −1% when stored at −20 °C for 30 days. When samples were kept unspun at RT for 72 h, PD was −23 and −80 % in plasma and serum, respectively.

Conclusions
C-peptide was more stable in serum provided the sample was centrifuged immediately and stored in the fridge or freezer while insulin was found to be more stable in EDTA plasma.
Understanding intercultural virtual exchange through a translanguaging lens in Chinese as a foreign language
Authors: Guo Zhiyan , Xu Xinyue 
Published: July 2023

Abstract
Virtual exchange refers to technology-enabled online communication between people who are geographically separated from each other. It has been increasingly adopted in education in the past two decades, especially since early 2020 when teachers and students were forced to move to an online mode of teaching and international exchange owing to the most recent pandemic. The current study is based on a nine-week virtual exchange project that took place between 22 students learning Chinese as a foreign language (CFL) from a British university and their partners from a Chinese university. The subjects conversed online with each other on self-directed topics on a weekly basis, and they completed their collaboration project for showcasing in the final week. From a translanguaging perspective, naturally occurring online conversations between intercultural interlocutors were investigated through the method of multimodal conversation analysis (MCA). The students leveraged a range of linguistic, semiotic and multimodal resources to navigate through communication with their partners. It is hoped that this study will contribute to the understanding of how translanguaging is embodied in virtual exchange interaction and how MCA can be applied to reveal the details present at the micro level of intercultural exchanges in the CFL context.
The dual index and dual core generalized inverse
Authors: Wang Hongxing , Gao Ju 
Published: July 2023

Abstract
In this article, we introduce the dual index and dual core generalized inverse (DCGI). By applying rank equation, generalized inverse, and matrix decomposition, we give several characterizations of the dual index when it is equal to 1. We realize that if DCGI exists, then it is unique. We derive a compact formula for DCGI and a series of equivalent characterizations of the existence of the inverse. It is worth noting that the dual index of

A

^

\widehat{A}

is equal to 1 if and only if its DCGI exists. When the dual index of

A

^

\widehat{A}

is equal to 1, we study dual Moore-Penrose generalized inverse (DMPGI) and dual group generalized inverse (DGGI) and consider the relationships among DCGI, DMPGI, DGGI, Moore-Penrose dual generalized inverse, and other dual generalized inverses. In addition, we consider symmetric dual matrix and its dual generalized inverses. Finally, two examples are given to illustrate the application of DCGI in linear dual equations.
A NiII–WV(CN)8 layer magnet showing metamagnetic behavior
Authors: Akagi Shintaro , Wang Junhao , Imoto Kenta , Kumar Kunal , Ohkoshi Shin-ichi , Tokoro Hiroko 
Published: July 2023

Abstract
By crystal engineering of molecular magnets, unique magnetic functionalities can be intentionally designed. In this work, we synthesized a novel two-dimensional cyanido-bridged coordination network, [NiII(pz)4]{[NiII(pz)3][WV(CN)8]}2·3.5H2O (NiW, pz = pyrazole), which exhibits metamagnetic behavior. NiW has wavy coordination layers created by two differently sized molecular square ladders and exhibits strong intralayer ferromagnetic interactions. Nevertheless, due to the relatively short interlayer distance, NiW shows spontaneous antiferromagnetic ordering below a Néel temperature of 21 K. By applying an external magnetic field, such antiferromagnet can be converted into a ferromagnet with a coercive field of 600 Oe at 2 K, elucidating the metamagnetic behavior of NiW.
Effects of Carbonation and Saturation on the Leaching Characteristics of Recycled Concrete Aggregates
Authors: Mahedi Masrur , Cetin Bora 
Published: July 2023

Abstract
This study assessed the efficacy of water leach tests (WLTs) and pH-static leach tests in evaluating the leaching behavior of distinctly carbonated recycled concrete aggregates (RCA). The leaching of barium (Ba), calcium (Ca), chromium (Cr), magnesium (Mg), and sulfate (SO4) from seven RCA samples were studied. WLTs at several liquid-to-solid ratios (L/S) and pH-static leach tests were conducted to examine the effects of carbonation on the release of elements. In addition, a novel experimental approach was introduced to gauge the impact of moisture saturation on the leaching attributes of RCA. The saturation effect on the leaching potential was explored by inducing eight different matric suctions in laboratory-compacted RCA cores. Moreover, geochemical modeling was performed to evaluate the leaching mechanisms of the elements. Results showed that a carbonation-based leaching assessment of RCA could be premised on laboratory WLTs and pH-static leach tests. Ba and Ca leaching decreased while Cr and SO4 leaching increased with the RCA degree of carbonation. The L/S ratio could be used as a substitute for RCA carbonation. At a higher L/S ratio, fresher and aged RCA samples had similar leaching fingerprints. The pH-dependent leaching of the elements was regulated by the RCA degree of carbonation, especially in the alkaline pH range. Irrespective of carbonation level, geochemical modeling suggested solubility-controlled leaching mechanisms. The leaching of metals from RCA was a dynamic process, and the changes in matric suction and consequently saturation could diversely influence the leaching characteristics of RCA.