bluuebunny/crossref_metadata_2025_split huggingface dataset:
Additive conjucyclic codes over a class of Galois rings
Authors: Islam Habibul , Bhunia Dipak Kumar 
Published: December 2023

AbstractAs a tool towards quantum error correction, additive conjucyclic codes have gained great attention. But, their algebraic structure is completely unknown over finite fields (except$${\mathbb {F}}_{q^2}$$Fq2) as well as rings. In this article, we investigate the structure of additive conjucyclic codes over Galois rings$$GR(2^r,2)$$GR(2r,2), where$$r\ge 2$$r≥2is an integer. We develop a one-to-one correspondence between the family of additive conjucyclic codes of lengthnover$$GR(2^r,2)$$GR(2r,2)and the family of linear cyclic codes of length 2nover$${\mathbb {Z}}_{2^r}$$Z2r. This correspondence helps to obtain additive conjucyclic codes over$$GR(2^r,2)$$GR(2r,2)via known linear cyclic codes over$${\mathbb {Z}}_{2^r}$$Z2r. We prove that the trace dual$${\mathscr {C}}^{Tr}$$CTrof an additive conjucyclic code$${\mathscr {C}}$$Cis also an additive conjucyclic code. Moreover, we derive a necessary and sufficient condition of additive conjucyclic codes to be self-dual. We further propose a technique for constructing linear cyclic codes over$${\mathbb {Z}}_{2^r}$$Z2rcontained in additive conjucyclic codes over$$GR(2^r,2)$$GR(2r,2). Last but not least, we explicitly derive the generator matrices for these codes.
Are fluorite mines prone to high concentrations of radon gas inside? The case of the Lújar mine in Órgiva (Granada, Southeast Spain)
Authors: Santamarta Juan C. , Rodríguez-Martín Jesica , Navarro Rafael , Trapero-Ruiz Claudio , García-Gil Alejandro , Cruz-Pérez Noelia 
Published: December 2023

AbstractThe Sierra de Lújar, located in the south of Granada (Spain), hosts one of the few currently active underground fluorite mines in Spain. Considering that high concentrations of radon gas, which is the second leading cause of lung cancer after tobacco, can occur in underground workplaces, the concentration of radon gas inside a fluorite underground mine has been measured, in order to prevent health risks to workers. QueryAlthough no significant concentration of radioactive elements has been detected in the geochemical analysis, the radon gas concentration values measured ranged between 28 and 1211 Bq m−3, and there were important variations, depending on the area of the mine. Some values exceed the limits established by European regulations. Despite these high values, the annual effective dose (E) ranges between 0.13 and 5.71 mSv, in most cases being below 3 mSv, which is the recommended value in underground mines. Improvement in the ventilation of main galleries, especially in the benefit plan area (level 423), the isolation of mined-out areas using bulkhead, continuous monitoring of radon concentration, and periodic health controls to workers are estimated as the main mitigation measures to take into consideration. The findings from this research suggest that workers in this underground fluorite mine may face substantial risk of receiving radon doses that could meet or surpass the recommended thresholds established by European regulations. This underscores the imperative for additional investigations into radon levels within underground operations in Spain.
Experimental Peloid Formulation Using a Portuguese Bentonite and Different Mineral-Medicinal Waters Suitable for Therapeutic and Well-being Purposes
Authors: Bastos Carla Marina , Rocha Fernando 
Published: December 2023

AbstractThe identification of raw materials and an effective maturation process for the development of peloids is essential to ensure consistent comparisons between commonly used peloids in ‘thermal centers’ (places that offer a variety of health and wellness treatments, also known as spas) and their therapeutic and well-being effects. The present study supports the need for scientific research which examines the variations in physicochemical, technological, and biological properties of peloids resulting from varying maturation conditions. These studies are necessary for establishing quality and safety standards and expanding our understanding of the therapeutic significance of peloids. The objective of the present study was to characterize an experimental maturation procedure using a specific Portuguese clay (bentonite) sourced from Benavila—Avis, which has particular physico-chemical characteristics, in conjunction with two distinct Portuguese mineral-medicinal waters (Hotel Cró and Thermal Spa, and Caldas da Rainha Thermal Hospital) as raw materials. The main aim of the study was to assess and characterize the resulting peloids by evaluating their physicochemical, technological, and biological properties. The experiment was conducted over a period of 90 days under carefully controlled lighting and agitation conditions. The rheological, mineralogical, and chemical properties relevant to a peloid intended for topical application and its potential transdermal delivery of elements were characterized. Additionally, the study investigated the biological activity within the maturation habitat, including chlorophyll, microalgae, and microorganisms. Eight samples, representing the four maturation conditions (stirring with light; stirring without light; no stirring with light, and no stirring and no light), were examined for 30, 60, and 90 days. The study showcased the influence of different mineral-medicinal waters on maturation conditions and on the final bentonite characteristics. Furthermore, it reinforced the importance of establishing quality-control procedures throughout the maturation cycle for bentonitic peloids, as well as the importance of monitoring their usage, reutilization, and disposal.
P-Alert earthquake early warning system: case study of the 2022 Chishang earthquake at Taitung, Taiwan
Authors: Yang Benjamin M. , Mittal Himanshu , Wu Yih-Min 
Published: December 2023

AbstractA series of earthquakes that struck Taiwan's southern Longitudinal Valley on September 17 and 18, 2022 severely damaged several buildings in Taitung and Hualien. The Chishang earthquake, which had a magnitude of ML 6.8 and a large foreshock with a magnitude of ML 6.6 the day before, was the mainshock in this sequence. The strongest intensity reported in the epicentral region during this earthquake sequence, which was 6 + , is the highest ever recorded since the Central Weather Bureau (CWB, renamed as the Central Weather Administration since September 15, 2023) revised its seismic intensity scale. National Taiwan University (NTU) has operated a low-cost earthquake early warning (EEW) system known as the P-Alert for a decade. In this study, we demonstrate the performance of the P-Alert network during the 2022 Chishang earthquake and the largest foreshock. The P-Alert network plotted shake maps during these earthquakes that displayed various values within 5 min. The high shaking areas on these maps were in good agreement with observed damages during this earthquake, providing valuable insights into rupture directivity, a crucial component of earthquake engineering. Individual P-Alert stations acted as on-site EEW systems and provided a lead time of 3–10 s within the blind zone of CWB. For the ML 6.8 mainshock, there was a lead time of at least 5 s, even up to 10 s, demonstrating their effectiveness in the blind zone. The P-Alert regional EEW system provided the first report about 9 s and 7 s after the mainshock and the largest foreshock occurrence, respectively, with estimated magnitudes of 5.74 and 5.67. The CWB system estimated magnitudes of 6.72 and 6.16 in the first report, respectively, about 7 s and 9 s after the earthquake occurrence. The timeliness of the two systems were not significantly different. Despite the effectiveness of the P-Alert network, data loss due to connection interruptions prompted us to develop a new compact data logger for improved data availability.
How to handle glacier area change in geodetic mass balance
Authors: Florentine Caitlyn , Sass Louis , McNeil Christopher , Baker Emily , O'Neel Shad 
Published: December 2023

AbstractInnovations in geodesy enable widespread analysis of glacier surface elevation change and geodetic mass balance. However, coincident glacier area data are less widely available, causing inconsistent handling of glacier area change. Here we quantify the bias introduced into meters water equivalent (m w.e.) specific geodetic mass balance results when using a fixed, maximum glacier area, and illustrate the bias for five North American glaciers. Sites span latitudes from the northern U.S. Rocky Mountains (48°N) to the Central Alaska Range (63°N) between 1948 and 2021. Results show that fixed (maximum) area treatment subdues the m w.e. mass change signal, underestimating mass balance by up to 19% in our test cases. This bias scales with relative glacier area change and the mass balance magnitude. Thus, the bias for specific geodetic mass balances will be most pronounced across rapidly deglaciating regions. Our analysis underscores the need for temporally resolved glacier area in geodetic mass balance studies.
The late Miocene Erinaceidae and Dimylidae (Eulipotyphla, Mammalia) from the Pannonian region, Slovakia
Authors: Cailleux Florentin , van den Hoek Ostende Lars W. , Joniak Peter 
Published: December 2023

AbstractThe families Erinaceidae and Dimylidae are represented in the late Miocene localities of Slovakia (Borský Svätý Jur, Krásno, Pezinok, Šalgovce, Studienka, and Triblavina) by at least six hedgehog species—‘Schizogalerix’ voesendorfensis (Rabeder, 1973); Schizogalerix cf. S. moedlingensis (Rabeder, 1973); Lantanotherium sanmigueli Villalta and Crusafont, 1944; Atelerix cf. A. depereti Mein and Ginsburg, 2002; Atelerix aff. A. depereti, cf. Postpalerinaceus sp. indet., and Erinaceinae gen. indet. sp. indet.—and two dimylid species—Plesiodimylus chantrei Gaillard, 1897; and Metacordylodon aff. M. schlosseri (Andreae, 1904). Material of L. sanmigueli from the western Carpathians was investigated, revealing broad variability in all samples. Additionally, the deciduous premolars of Lantanotherium Filhol, 1888 are described here for the first time. Erinaceid species are frequent in the Vallesian but their abundance strongly declined afterward. As an exception, Schizogalerix Engesser, 1980 re-entered the Danube and Vienna basins during MN11, likely from eastern Europe. Members of Erinaceinae display low diversity during the late Miocene of central Europe, which tends to support a pan-European diversity phenomenon. The humidity-dependent Dimylidae spp. were abundant during the late Vallesian. Rare finds of Plesiodimylus Gaillard, 1897 confirm the survival of this family into the early MN11 in the Pannonian region.
Kabyle Literary History and Questions Related to its Periodization: The Case of Poetry
Authors: Bellal Hakima 
Published: December 2023

AbstractWriting about Kabyle literary history today is a difficult task, considering the very nature of this literature. It is fundamentally oral and did not take its first steps toward a written form until the mid-1940s. There is a considerable lack of works dedicated to Kabyle literature, and those that do exist have primarily focused on poetry, due to the characteristics inherent to this genre. Indeed, unlike prose, poetry includes temporal markers since it accompanies or relays easily identifiable historical events, whereas the narrative genres (legends, fables, and tales) are difficult to date, at least in the case of these last two. For this reason, undertaking more work in this area seems to be a matter of urgency. It is therefore necessary, as required by any work on literary history, to start with periodization; this consists of dividing the historical continuum into linear segments. This work should be based on the establishment of literary facts (e.g., authors, publication dates, etc.) as relevant elements, as well as on the socio-historical events that have marked literary production. By examining the textuality of some poetic works produced at different times by different Kabyle poets (e.g., Youcef Oukaci, Si Mohand Ou Mohand, Ben Mohammed, Idir, Matoub, Ferhat, etc.), I will attempt to propose a historical periodization that will account for the development of the theme of identity in Kabyle poetry.
The effect of verb surprisal on the acquisition of second language syntactic structures in adults: An artificial language learning study
Authors: Bovolenta Giulia , Marsden Emma 
Published: December 2023

AbstractInverse probability adaptation effects (the finding that encountering a verb in an unexpected structure increases long-term priming for that structure) have been observed in both L1 and L2 speakers. However, participants in these studies all had established representations of the syntactic structures to be primed. It therefore remains an open question whether inverse probability adaptation effects could take place with newly encountered L2 structures. In a pre-registered experiment, we exposed participants (n = 84) to an artificial language with active and passive constructions. Training on Day 1 established expectations for specific co-occurrence patterns between verbs and structures. On Day 2, established patterns were violated for the surprisal group (n = 42), but not for the control group (n = 42). We observed no immediate priming effects from exposure to high-surprisal items. On Day 3, however, we observed an effect of input variation on comprehension of verb meaning in an auditory grammaticality judgment task. The surprisal group showed higher accuracy for passive structures in both tasks, suggesting that experiencing variation during learning had promoted the recognition of optionality in the target language.
Students’ attitudes to school music and perceived barriers to GCSE music uptake: a phenomenographic approach
Authors: Kokotsaki Dimitra , Whitford Helen 
Published: December 2023

AbstractThe study aimed to investigate how students in lower secondary schools in England perceive the subject of music in terms of its importance and enjoyment. Following findings from the first survey phase of the project, it specifically sought to shed light on the reasons why the majority of students decide not to choose music as one of their optional subjects at GCSE level. The paper presents interview findings with students in three schools at the north-east of England following the phenomenographic method of data analysis. Among factors found to impact on students’ decision to continue music at Key Stage 4 (ages 14–16 years) were the desire to spend more time learning music, having more choice and autonomy in the classroom, having more information about the content and requirements of GCSE music, feeling disadvantaged due to not being proficient at instrumental playing and having a limited perception of their own musicality or perceiving music as being elite or difficult. The findings are discussed in terms of their practical implications for the teaching and learning of music in secondary schools.
Measuring double awareness in patients with advanced cancer: A preliminary scale development study
Authors: McConnell Mairead H. , Miljanovski Melissa , Rodin Gary , O’Connor Mary-Frances 
Published: December 2023

AbstractBackgroundIndividuals with advanced cancer face the challenge of living meaningfully while also preparing for end of life. The ability to sustain this duality, called “double awareness,” may reflect optimal psychological adaptation, but no psychometric scale exists to measure this construct.ObjectivesThe purpose of this study was to develop a novel scale to measure double awareness in patients living with advanced cancer.MethodsGuided by best practices for scale development, this study addresses the first three of nine steps in instrument development, including domain clarification and item generation, establishment of content validity of the items, and pre-testing of the items with patients.ResultsInstrument development resulted in a 41-item measure with two dimensions titled “life engagement” and “death contemplation.” Items retained in the measure displayed face validity and were found to be both acceptable by patients and relevant to their lived experience.Significance of resultsThe results of this scale development study will allow for full validation of the measure and future use in clinical and research settings. This novel measure of double awareness will have clinical utility and relevance in a variety of settings where patients with advanced cancer are treated.
Evidence for Electron Precipitation Diffused by Rising‐Tone Quasiperiodic Whistler Waves in Extremely Low L−Shells Observed by CSES
Authors: Zhang Zhenxia , Yang Dehe , Wang Dedong , Wang Lu , Zhang Fang , Li Xinqiao , Zeren Zhima 
Published: December 2023

AbstractBased on the observations by the sun‐synchronous circular orbit China Seismo‐Electromagnetic Satellite(CSES), a typical case of the rising‐tone quasiperiodic (QP) emissions with a large period of around 2 min was reported to appear on the dayside on 23 October 2021. The frequency of QP waves ranges from 2,000 ∼ 3,000 Hz and the wave spectral structure consists of four elements with right‐handed polarization. Three elements of them are located at extremely low L‐shells from 2 ∼ 3.5. The periodic precipitating fluxes of 100 ∼ 400 keV electrons were found in the conjugate region also observed by CSES, which appeared in the same magnetic field lines with the elements of QP waves, respectively. By numerical simulations of quasi‐linear diffusion theory, we confirm that QP emissions can effectively precipitate energetic electrons near the loss cone into the atmosphere in the inner radiation belt. To our best knowledge, this is the first evidence that the rising‐tone QP whistler waves scatter electrons in the inner radiation belt. This new finding will help to deepen our understanding of the electron precipitation dynamics in radiation belt physics.
Properties and Mechanisms of Seawater Exchange in Marian Cove, King George Island, West Antarctic Peninsula
Authors: Kim Yeonggi , Kim Tae‐Wan , Park Sang‐Jong , Ha Sun‐Yong , Park Jisoo , Yoo Jaeill , Cho Yang‐Ki 
Published: December 2023

AbstractThe Antarctic Peninsula is one region that has recently experienced warming substantially more rapidly than the global mean over the past 50 years. Marian Cove is located in the South Shetland Islands connected to the Bransfield Strait via Maxwell Bay between King George Island and Nelson Island. In this study, we identified properties and mechanisms of seawater exchange in Marian Cove from multiple hydrographic surveys and a single bottom‐mounted mooring installed at the entrance to Marian Cove. Regardless of the season, the mean current velocity profiles at the entrance to Marian Cove were constant because of the influence of tidal forcing. Wind was the primary force that determined the variation in surface current; in response, a countercurrent occurred near the bottom area. We estimated salt transport to understand what effects Maxwell Bay′s saline water intrusion has on the Marian Cove environment. When the daily easterly wind was at its maximum of 18.5 m s−1, the salinity could increase to 7.20 × 10−4 g kg−1 in 1 day. In addition, the average freshwater residence time in Marian Cove for the quantitative evaluation of seawater exchange was approximately 9 days. However, the freshwater residence time was reduced to less than 2 days when there were extreme easterly winds.
Inactivation of hypocretin receptor-2 signaling in dopaminergic neurons induces hyperarousal and enhanced cognition but impaired inhibitory control
Authors: Bandarabadi Mojtaba , Li Sha , Aeschlimann Lea , Colombo Giulia , Tzanoulinou Stamatina , Tafti Mehdi , Becchetti Andrea , Boutrel Benjamin , Vassalli Anne 
Published: December 2023

AbstractHypocretin/Orexin (HCRT/OX) and dopamine (DA) are both key effectors of salience processing, reward and stress-related behaviors and motivational states, yet their respective roles and interactions are poorly delineated. We inactivated HCRT-to-DA connectivity by genetic disruption of Hypocretin receptor-1 (Hcrtr1), Hypocretin receptor-2 (Hcrtr2), or both receptors (Hcrtr1&2) in DA neurons and analyzed the consequences on vigilance states, brain oscillations and cognitive performance in freely behaving mice. Unexpectedly, loss of Hcrtr2, but not Hcrtr1 or Hcrtr1&2, induced a dramatic increase in theta (7–11 Hz) electroencephalographic (EEG) activity in both wakefulness and rapid-eye-movement sleep (REMS). DAHcrtr2-deficient mice spent more time in an active (or theta activity-enriched) substate of wakefulness, and exhibited prolonged REMS. Additionally, both wake and REMS displayed enhanced theta-gamma phase-amplitude coupling. The baseline waking EEG of DAHcrtr2-deficient mice exhibited diminished infra-theta, but increased theta power, two hallmarks of EEG hyperarousal, that were however uncoupled from locomotor activity. Upon exposure to novel, either rewarding or stress-inducing environments, DAHcrtr2-deficient mice featured more pronounced waking theta and fast-gamma (52–80 Hz) EEG activity surges compared to littermate controls, further suggesting increased alertness. Cognitive performance was evaluated in an operant conditioning paradigm, which revealed that DAHcrtr2-ablated mice manifest faster task acquisition and higher choice accuracy under increasingly demanding task contingencies. However, the mice concurrently displayed maladaptive patterns of reward-seeking, with behavioral indices of enhanced impulsivity and compulsivity. None of the EEG changes observed in DAHcrtr2-deficient mice were seen in DAHcrtr1-ablated mice, which tended to show opposite EEG phenotypes. Our findings establish a clear genetically-defined link between monosynaptic HCRT-to-DA neurotransmission and theta oscillations, with a differential and novel role of HCRTR2 in theta-gamma cross-frequency coupling, attentional processes, and executive functions, relevant to disorders including narcolepsy, attention-deficit/hyperactivity disorder, and Parkinson’s disease.
Effects of different types of functionalized polypropylenes on the tensile strength of short carbon fiber-reinforced polypropylene composites
Authors: Yamaguchi Ayaka , Uematsu Hideyuki , Sakaguchi Toshikazu , Hashimoto Tamotsu 
Published: December 2023

AbstractIn this study, the effects of various functionalized polypropylenes (PPs) with different types and contents of functional groups and crystallinities on the tensile strength of short carbon fiber (SCF)-reinforced plastics (SCFRPs) prepared by injection molding were evaluated. The tensile strengths of SCFRPs were significantly influenced by interfacial adhesion. The types and contents of functional groups introduced into functionalized PP were the dominant factors impacting the development of interfacial adhesion. In particular, near the surface where SCF and PP were highly oriented in parallel, functionalized PP with more functional groups added to side chains exhibited higher interfacial adhesion than that with fewer functional groups. These results suggested that PP molecular chain orientations resulting from the shear flow of injection molding were among the key factors affecting the interfacial adhesion of the PP matrix.