bluuebunny/crossref_metadata_2025 huggingface dataset:
Flow-induced oscillations of pitching swept wings: stability boundary, vortex dynamics and force partitioning
Authors: Zhu Yuanhang , Breuer Kenneth
Published: December 2023

We study experimentally the aeroelastic instability boundaries and three-dimensional vortex dynamics of pitching swept wings, with the sweep angle ranging from 0

$^\circ$

to 25

$^\circ$

. The structural dynamics of the wings are simulated using a cyber-physical control system. With a constant flow speed, a prescribed high inertia and a small structural damping, we show that the system undergoes a subcritical Hopf bifurcation to large-amplitude limit-cycle oscillations (LCOs) for all the sweep angles. The onset of LCOs depends largely on the static characteristics of the wing. The saddle-node point is found to change non-monotonically with the sweep angle, which we attribute to the non-monotonic power transfer between the ambient fluid and the elastic mount. An optimal sweep angle is observed to enhance the power extraction performance and thus promote LCOs and destabilize the aeroelastic system. The frequency response of the system reveals a structural-hydrodynamic oscillation mode for wings with relatively high sweep angles. Force, moment and three-dimensional flow structures measured using multi-layer stereoscopic particle image velocimetry are analysed to explain the differences in power extraction for different swept wings. Finally, we employ a physics-based force and moment partitioning method to correlate quantitatively the three-dimensional vortex dynamics with the resultant unsteady aerodynamic moment.
On the preferred flapping motion of round twin jets
Authors: Rodríguez Daniel , Stavropoulos Michael N. , Nogueira Petrônio A.S. , Edgington-Mitchell Daniel M. , Jordan Peter
Published: December 2023

Linear stability theory (LST) is often used to model the large-scale flow structures in the turbulent mixing region and near pressure field of high-speed jets. For perfectly expanded single round jets, these models predict the dominance of azimuthal wavenumbers

$m=0$

and

$m = 1$

helical modes for the lower frequency range, in agreement with empirical data. When LST is applied to twin-jet systems, four solution families appear following the odd/even behaviour of the pressure field about the symmetry planes. The interaction between the unsteady pressure fields of the two jets also results in their coupling. The individual modes of the different solution families no longer correspond to helical motions, but to flapping oscillations of the jet plumes. In the limit of large jet separations, when the jet coupling vanishes, the eigenvalues corresponding to the

$m=1$

mode in each family are identical, and a linear combination of them recovers the helical motion. Conversely, as the jet separation decreases, the eigenvalues for the

$m=1$

modes of each family diverge, thus favouring a particular flapping oscillation over the others and preventing the appearance of helical motions. The dominant mode of oscillation for a given jet Mach number

$M_j$

and temperature ratio

$T_R$

depends on the Strouhal number

$St$

and jet separation

$s$

. Increasing both

$M_j$

and

$T_R$

independently is found to augment the jet coupling and modify the

$(St,s)$

map of the preferred oscillation mode. Present results predict the preference of two modes when the jet interaction is relevant, namely varicose and especially sinuous flapping oscillations on the nozzles’ plane.
DEGREE SPECTRA OF HOMEOMORPHISM TYPE OF COMPACT POLISH SPACES
Authors: HOYRUP MATHIEU , KIHARA TAKAYUKI , SELIVANOV VICTOR
Published: December 2023

A Polish space is not always homeomorphic to a computably presented Polish space. In this article, we examine degrees of non-computability of presenting homeomorphic copies of compact Polish spaces. We show that there exists a

$\mathbf {0}'$

-computable low

$_3$

compact Polish space which is not homeomorphic to a computable one, and that, for any natural number

$n\geq 2$

, there exists a Polish space

$X_n$

such that exactly the high

$_{n}$

-degrees are required to present the homeomorphism type of

$X_n$

. Along the way we investigate the computable aspects of Čech homology groups. We also show that no compact Polish space has a least presentation with respect to Turing reducibility.
A self-paced reading study of context effects in the processing of aspectual verbs in Mandarin
Authors: Ma Ye , Buccola Brian , Cousins Shannon , Beretta Alan
Published: December 2023

Research in the past few years has investigated the semantic complexity of expressions with aspectual verbs followed by entity-denoting complements such as finish the book that led to processing costs cross-linguistically. The Structured Individual Hypothesis (SIH) proposes that aspectual verbs lexically encode a function whose value (dimension) must be resolved. This ambiguity resolution is hypothesized to occur at the verb’s complement, where a specific dimension is selected based on context (Piñango & Deo, 2016). In light of the critical role of the context in SIH, recent research (Lai et al., 2023; Lai & Piñango, 2019) has investigated how the interpretations of sentences with aspectual verbs were affected by biased contexts in an offline sentence acceptability judgment study and an online eye-tracking study. However, results of the two studies showed that biased contexts disambiguated the interpretations of aspectual verb expressions offline while processing costs in biased contexts were not found to attenuate costs in real time. The reason why conflicting results were found offline versus online and the timecourse of context effects remain unclear, but in our view it may be due to pragmatic contexts, i.e., descriptions of the utterance context used to infer the salient reading of the utterance. We used grammatical contexts – two classes of adverbs – in a self-paced reading study to examine context effects for sentences with aspectual verbs in Mandarin. We found that biased grammatical contexts not only affected the interpretations in the offline task, but crucially facilitated processing in the online experiment as well. We conclude that biased grammatical contexts predetermine the interpretations of aspectual verb expressions immediately in real time.
Cuerpo, mestizaje y colonialidad: La alteridad de las mujeres trans en las muestras fotográficasPadre PatriayVírgenes de la Puerta
Authors: del Águila Gracey Rocío
Published: December 2023

A partir de las series fotográficasPadre Patria(2014–2019) yVírgenes de la Puerta(2014–2016), de Juan José Barboza-Gubo y Andrew Mroczek, este ensayo reflexiona acerca de la identidad de las mujeres trans en el Perú desde la sexualidad, el mestizaje y la colonialidad del poder.Padre Patriaofrece una narrativa visual de los crímenes de odio hacia la comunidad LGBTI en diferentes lugares del país. EnVírgenes de la Puertase propone un nuevo modelo de feminidad a través de la apropiación de íconos religiosos como la Virgen María. A partir de enfoques decoloniales, feministas, de diversidad sexual y biopoder, este trabajo indaga sobre la reformulación del retrato fotográfico de las mujeres trans a través de la estética mariana y la violencia patriarcal. La dimensión política de este proyecto fotográfico busca visibilizar las experiencias de las mujeres trans en la actualidad.
Ángel Rama contra la ciudad letrada: Prehistoria de un concepto
Authors: Martínez Miguel
Published: December 2023

A pesar de su abarcadora influencia, La ciudad letrada de Ángel Rama (1984) ha sido sometida en los últimos años a una intensa crítica que ha cuestionado la relación demasiado unívoca que el argumento planteaba entre escritura y poder, así como su exclusión de las formas de alfabetización indígena, mestiza y afrodescendiente. El presente trabajo parte de estos debates para, revisando la obra crítica y los epistolarios de Rama, ofrecer una nueva genealogía intelectual del concepto que daba título al libro póstumo. En particular, se rescata el ensayo de 1980 donde Rama se refirió por primera vez a la ciudad letrada, titulado “La señal de Jonás sobre el pueblo mexicano”. La relectura del libro en diálogo con este trabajo previo nos permitirá ver que la idea de ciudad letrada no aspiraba a describir la totalidad de la realidad cultural de la América colonial, sino uno de los polos que la tensionan, uno de los lados de un conflicto cultural. “La señal de Jonás” ofrece una visión significativamente diferente de la ciudad colonial, donde la fuerza cultural de una plebe urbana y multirracial desafía los muros de la ciudad letrada y alcanza a penetrar la práctica intelectual de algunos de sus guardianes. Frente al pesimismo de La ciudad letrada, late en “La señal de Jonás” un utopismo similar al de Transculturación narrativa en América Latina respecto a las potencialidades políticas y estéticas de esa cultura urbana popular de raigambre colonial.
THE ROLE OF 14C DATING IN THE IDENTIFICATION OF MISSING PERSONS IN CYPRUS
Authors: Quarta Gianluca , Eleftheriou Theodora , Engin Istenc , Maruccio Lucio , D’Elia Marisa , Calcagnile Lucio
Published: December 2023

The Committee on Missing Persons in Cyprus (CMP) is a bicommunal committee with the mandate to locate and identify the skeletal remains of 2002 persons who were reported missing during the inter-communal fighting of 1963–64, as well as the events of July and August 1974. During the periods of conflict, several archaeological sites and old cemeteries were used as primary burial sites, among several other types of burials, as they were easily accessed by the persons involved in the interment and little effort was needed to conceal the bodies. The relatively large post-mortem interval and the generally poor post-mortem preservation of the skeletal remains poses an additional challenge in the forensic examination process and the identification of the remains, particularly in the absence of a context or other associated artifacts/evidence. Between 2016 and 2020, the CMP has been collaborating with CEDAD to clarify the relevancy of several cases by using radiocarbon dating. The CMP submitted 139 cases to CEDAD out of which 112 were determined as not linked to the 1963–64 and 1974 events and then not relevant for the CMP project. For the remaining samples radiocarbon dating was used to determine death age.
Reevaluation of the protein requirement in Chinese elderly adults without sarcopenia with the indicator amino acid oxidation technique
Authors: Wu Wenxuan , Zhang Yanhong , Ma Hui , Lu Jiaxi , Chen Fengge , Zhou Haisong , Nie Shuhui , Yang Yunqi , Wang Rui , Yue Weixiao , Li Min , Yang Lichen
Published: December 2023

It is now generally believed that elderly may have slightly higher dietary protein requirements than those of the young-middle-aged adults. We have previously conducted related studies by the indicator amino acid oxidation (IAAO) technique, but more research data are needed to revise the protein requirements of the elderly. The main objective was to reevaluate the dietary protein requirements of healthy Chinese adults (65–80 years) without sarcopenia by using the IAAO technique. Nine healthy adult men and seven healthy adult women participated in the study, with protein intakes ranging from 0·1 to 1·8 g/(kg·d). Diets that delivered energy at a 1·5 resting energy expenditure were isocaloric. The amounts of phenylalanine and tyrosine needed to remain constant for each protein dosage. By applying a nonlinear mixed-effects model analysis on the F13CO2 data, which revealed a breakpoint in F13CO2 in response to graded protein intakes, the mean protein requirement was calculated. The mean estimated average requirement (EAR) for healthy elderly Chinese adults without sarcopenia was determined to be 0·94 g/(kg·d). The protein recommended nutrient intake (RNI) determined using various derivation approaches ranged from 1·13 to 1·36 g/(kg·d). The EAR for Chinese adults without sarcopenia aged 65–80 years in this study is 6·8 % higher than the current recommended EAR (0·88 g/(kg·d)). The RNI derived using various derivation approaches are all greater than the current RNI (0·98 g/(kg·d)). This trial was registered with the Chinese clinical trial registry as ChiCTR2200061382.
Practice of Piety Translated: The Dynamics of the International Circulation of a Devotional Book
Authors: van de Kamp Jan
Published: December 2023

This article attempts to develop a more systematic theoretical framework for investigating the international dissemination of devotional books in early modern times. In terms of the concept of cultural translation, the devotional genre offered fertile ground for the dynamics of selection, appropriation, decontextualization, and recontextualization. In this study, a case is made around one particular bestseller: The Practice of Piety, written by the Welsh clergyman Lewis Bayly (c.1575–1631). By studying this book's various editions and translations, we are able to consider more clearly the circumstances under which a devotional book and its textual content were governed by these dynamics. We are also able to gain greater understanding and insight into some of the actors involved: how, by whom, through which channels, and for which audiences. The primary analysis focuses on the language area of the source text: the English-speaking world. It also looks at some of the areas that, first, differ from the original context in terms of the confessional communities in which Bayly's book was translated, printed, and read; and second, for which the production, distribution, and reception of Bayly's text has been sufficiently studied, namely the Dutch- and German-language areas. The result is a premise that offers a springboard for further investigation into the dynamics at play in the international circulation of devotional books—especially in terms of text, illustration, and reading behavior.
“No Place Is So Dear to My Childhood”: Evangelicalism, Nostalgia, and the History of an American Hymn
Authors: Cantwell Christopher D.
Published: December 2023

This article tracks the surprising history of a love ballad about a lost sweetheart that went on to become a celebrated gospel hymn about the rural roots of America's greatness. Titled “The Little Brown Church,” but sometimes called “The Church in the Wildwood,” the song's evolution speaks to the ways in which nostalgia became central to the social and religious imagination of those American Protestants call themselves “evangelicals.” Though it first appeared in college songbooks after its publication in 1865, “The Little Brown Church” eventually became a favorite of evangelists, revivalists, and other gospel singers at the dawn of the twentieth century. For these new singers, “The Little Brown Church” spoke to more than just the simple faith they wished to restore. It also illustrated the centrality of white Protestants to the American experience at a moment when the hold these believers had on the nation was beginning to slip. And they would alter both the lyrics and the church's history to bring the two in line. The process not only reveals how nostalgia for a bygone era became vital to those who think of themselves as evangelicals in the twentieth century, but also how evangelicalism itself is something of a historical construction.
The Murder Death of Pang Hwa-il: Erasing American Violence, Producing Christian Allies During the Korean War
Authors: Cha Paul S.
Published: December 2023

This article examines one of the first court-martial of a US soldier for the murder of a Korean civilian. In December 1951, Pang Hwa-il died from injuries sustained at the hands of four American soldiers during a late-night search of a home he was visiting. Many acts of violence perpetrated by the US military against Korean civilians like Pang during the Korean War went unaccounted for. However, his death would receive public attention in the United States because he was the associate general secretary of the Korean National Council of Churches. Responding to public pressure, the US military eventually started an investigation approximately two months after the incident took place. By examining the circumstances surrounding Pang's murder, the subsequent trial, and its aftermath, this article challenges a standard characterization of the relationship among missionaries, Korean Protestants, and the US military during the 1950s as a close partnership. The American government, the military, and missionaries had all carefully cultivated a narrative that the US and a Christian South Korea were allies against communism. However, Pang, a Korean Christian leader, was killed by a US soldier, not a communist enemy. Furthermore, the US military's initial delay in bringing Pang's assailants to trial and the light sentence that was handed down shocked both Korean and American observers. As this incident reveals, the US military valued the lives of its Korean allies less than American lives, calling into question the American government's claims that it was working in partnership with South Koreans.
The role of integrated soil fertility management in improving crop yields in the Ethiopian Highlands
Authors: Doldt Julia , Yilma Kidist , Ellis-Jones Jim , Schulz Steffen , Thomson Alex , Barahona Carlos
Published: December 2023

Land degradation and declining productivity in the Ethiopian Highlands are primarily caused by soil fertility decline due to erosion, nutrient depletion, and soil acidity. An integrated soil fertility management (ISFM) project operating over a six-year period aimed to combat this and boost yields through participatory demonstrations. Despite high levels of yield variability expected from a farmer-managed observational study over a wide area, results show that crop yields increased with increased use of ISFM. Detailed statistical analysis using multiple linear regression models explained the contribution of individual practices. Use of improved varieties and line-seeding rather than broadcasting were consistently and highly significant. The contribution of inorganic blended fertiliser was less clear, probably due to low soil organic matter and use on acidic soils, although response to nitrogen was highly significant. The contribution of organic fertilisers was less than expected, possibly due to soil disturbance from farmer practices of multiple ploughing. Responses to crop residue management and agroforestry practices were significant on most crops reflecting their importance in improving soil water management, soil organic matter and recycling nutrients. Response to lime application on acid soils was highly significant confirming the importance of correcting acidity. Unexplained differences are attributed to the additive effects of using several ISFM treatments as well as unrecorded beneficial farmer management practices. It can be concluded that ISFM can play an essential role in improving productivity, addressing food insecurity and the challenges of climate change. Further expansion will require advocacy, awareness-raising, field-level extension and involvement of the private sector.
Are Shadow Rate Models of the Treasury Yield Curve Structurally Stable?
Authors: Kim Don H. , Priebsch Marcel A.
Published: December 2023

We examine the structural stability of Gaussian shadow rate term structure models in a sample of Treasury yields that includes the “effective lower bound” (ELB) period from 2008 to 2015. After highlighting the challenges of testing for structural breaks in a latent-factor model, we proceed to document various pieces of empirical evidence for a structural break. As one of several practical implications, the expected policy rate paths during ELB years are notably shallower in our model that accommodates a structural break compared with a model that imposes structurally stability.
Ontogenetic morphological changes of the venom apparatus in 4 eupelmid egg parasitoids
Authors: Chen Xu , Zhao Qian-Yu , Chen Yong-Ming , Tariq Haneef , Zang Lian-Sheng
Published: December 2023

Parasitoid wasps, notably egg parasitoids of the family Eupelmidae (Hymenoptera: Chalcidoidea), a key natural enemy of insect pests, offer a sustainable approach to pest management in agriculture. This study investigated the venom apparatus's developmental dynamics across 4 species of eupelmid egg parasitoids: Anastatus. japonicus, Anastatus fulloi, Mesocomys trabalae and Mesocomys albitarsis. A comprehensive anatomical investigation revealed differences in the dimensions of the venom apparatus across different developmental stages in adult females. We found that the venom apparatus of these 4 studied species consists of a venom gland and a reservoir with an associated Dufour's gland. As the length of post-emergence increases, a significant enlargement in the venom apparatus is evident across all the studied parasitoid species. Notably, M. albitarsis consistently exhibites the shortest venom gland length, whereas that of A. fulloi is the longest among the observed species. At the high day age, the width of venom glands of the 2 Mesocomys species surpasses those of the Anastatus species; for the volume of the venom reservoir, there is a steady increase in all 4 species before the age of 6–7 days, with a decline on 8th day, especially for A. japonicus. This research provided new insights into the developmental trajectories of venom apparatus in eupelmid egg parasitoids and the potential impact of venom potency on their success.
Localising cosmopolitanism in place talk: Semiotic landscape as stance object
Authors: Zhao Fengzhi , Lou Jackie Jia
Published: December 2023

Sociolinguistic research has begun to critique the generalised view of cosmopolitanism as indexed by the use of global and non-local languages and urge us to explore its variety and complexity as situated and dialogical practices. This article answers this call by examining how cosmopolitanism is localised in place talk. Drawing from a larger ethnographic study of language, space, and cosmopolitanism in Shanghai, the analysis focuses on how participants evoke, compare, and evaluate the semiotic landscapes of this Chinese megalopolis. While competing notions of cosmopolitanism emerge during the research interviews, stances taken towards them also perform divergent relationships to the city. This article thus demonstrates how, instead of being a binary opposition, cosmopolitan landscape is discursively reappropriated for the construction of local identities. It contributes to our understanding of how cosmopolitanism is reterritorialised in urban space. (Cosmopolitanism, semiotic landscape, stance, place talk, place-identity, Shanghai)*
Subcortical restructuring as a function of multilingualism: Insights from monolinguals, bilinguals, trilinguals and quadrilinguals
Authors: Yee Jia'en , Yap Ngee Thai , Korenar Michal , Saddy James Douglas , Pliatsikas Christos
Published: December 2023

Subcortical structures implicated in language control and processing adapt structurally with increasing language experience. However, the adaptation patterns across different subcortical structures remain unclear. Previous findings from bilinguals and multilinguals reveal renormalisation patterns, lending support to the Dynamic Restructuring Model (Pliatsikas, 2020). These patterns are composed of increasing volumes during the initial stages of language learning, and subsequent reductions as experience increases. T1-weighted images from 14 English monolinguals, 14 bilinguals, 14 trilinguals, and 14 quadrilinguals were obtained. The volumes of five subcortical regions implicated in language control and processing were compared amongst the groups. The findings showed group differences for every structure – caudate nucleus, nucleus accumbens, putamen, globus pallidus and thalamus. Complex patterns were unveiled for each structure, suggesting expansions and renormalisations that differ in trajectory for each group. These findings highlight the dynamic progression of subcortical adaptations, and support the notion of structural renormalisation as language experience grows.
COMMON ZEROS OF IRREDUCIBLE CHARACTERS
Authors: HUNG NGUYEN N. , MORETÓ ALEXANDER , MOROTTI LUCIA
Published: December 2023

We study the zero-sharing behavior among irreducible characters of a finite group. For symmetric groups
$\mathsf {S}_n$
, it is proved that, with one exception, any two irreducible characters have at least one common zero. To further explore this phenomenon, we introduce the common-zero graph of a finite group G, with nonlinear irreducible characters of G as vertices, and edges connecting characters that vanish on some common group element. We show that for solvable and simple groups, the number of connected components of this graph is bounded above by three. Lastly, the result for
$\mathsf {S}_n$
is applied to prove the nonequivalence of the metrics on permutations induced from faithful irreducible characters of the group.
Discovery of male sterility from an interspecific cross between Jatropha curcas and J. integerrima
Authors: Phithakhongsa Premroedee , Tanya Patcharin , Arunyanark Anuruck , Phetcharat Chamnanr , Muakrong Narathid , Srinives Peerasak
Published: December 2023

Jatropha (Jatropha curcas L.) is a shrub that produces non-food oil and can potentially be used for biodiesel production. An interspecific cross was made between J. curcas and peregrina (J. integerrima) to increase genetic diversity. Interestingly, male sterility was observed in the F2 population. Out of the 445 F2 plants, five, namely, ms-1 to ms-5, exhibited male sterility, characterized by unopened and distorted stamens without pollen. The parental jatropha, peregrina, F1 and F2 had fertile pollen grain rates of 90.61%, 96.39%, 81.46% and 75.39%, respectively. To verify the fertility of the pistils in the male sterile plants, they were pollinated through selfing, opening and hand crossing with fertile pollen. All of the ms lines experienced seed abortion with or without fruit, except for ‘ms-5’, which produced seed.
Adrenal ablation as a treatment for hypertension: analyzing the dielectric properties of adrenal glands for microwave ablation technologies
Authors: Amin Bilal , Cappiello Grazia , Kraśny Marcin J. , Dunne Eoghan , Lowery Aoife , Dennedy Michael Conall , Prakash Punit , Elahi Adnan , O’Halloran Martin
Published: December 2023

Adrenal gland-induced hypertension, also known as secondary hypertension, is a medical condition caused by an underlying adrenal pathology, most typically adrenocortical adenomas. Current clinical practices involve pharmacotherapy or surgical resection to treat adrenal gland diseases that cause hypertension. However, due to the limitations of these treatment options, microwave ablation (MWA) has emerged as a promising minimally invasive alternative. An accurate understanding of the dielectric properties of adrenal glands would support the further development and optimization of MWA technology for treating adrenal tumors. Only a few studies have examined the dielectric properties of both human and animal adrenal glands, and the sample sizes of these studies have been relatively small. Therefore, further dielectric data of human and animal adrenal glands are warranted. This paper presents the ex vivo dielectric properties of the ovine adrenal glands (medulla and cortex) and summarizes the published literature on dielectric data of adrenal glands from porcine, bovine, ovine, and human samples in the microwave frequency range to analyze the consistency and reliability of the reported data. The dielectric properties of the ovine adrenal glands (N = 8) were measured using an open-ended coaxial probe measurement technique at frequencies ranging from 0.5 to 8.5 GHz. This study also investigated the temperature-dependent dielectric properties of the ovine adrenal medulla ranging from 37 to 64°C at frequencies ranging from 0.5 to 8.5 GHz. The dielectric properties of the ovine adrenal medulla measured in this study were found to be consistent with the literature. Moreover, the review suggests that variations exist in the dielectric properties of the adrenal medulla and cortex among species. The study also found that the dielectric properties of the adrenal medulla decrease with increasing temperature, similar to other tissues for which temperature-dependent dielectric data have been reported. This summary of dielectric data of adrenal glands and the temperature-dependent dielectric properties of the ovine adrenal medulla will accelerate the development of MWA technologies for hypertension treatment.
Reconfigurable MIMO antenna: previous advancements and the potential for future wireless communication
Authors: Kumari Puja , Dwari Santanu
Published: December 2023

Future smart reconfigurable antennas (RAs) (Haupt R-L and Lanagan M (2013) Reconfigurable antennas. IEEE Antennas and Propagation Magazine 55, 49–61) will likely be fully multipurpose and controlled by software and equipped with machine learning skills that can discern and respond to alterations in the radio frequency environment. Cognitive radio utilizations will be accomplished using a new generation of antenna technology and communication protocols. The effective use of frequencies and the use of polarization diversity and radiation pattern reconfigurability to send data over existing congested frequencies will be major advantages for such applications. The usage of antennas that can be reconfigured in multiple-input multiple-output (MIMO) channels will enhance channel capacity while simultaneously improving channel efficiency and lowering costs (Christodoulou C-G, Tawk Y, Lane S-A and Erwin S-R (2012) Reconfigurable antennas for wireless and space applications. Proceedings of the IEEE 100, 2250–2261). There are a lot of antennas used both at the transmitter and at the receiver front end in a MIMO system. The benefit of employing such arrangements is that different types of information can be conveyed at a similar time, boosting the spectral efficiency of communication in a multipath situation. The coding rate, modulation level, and transmission signaling method of a MIMO system can all be changed in response to changing channel circumstances and user needs. In a MIMO context, polarization reconfigurable/frequency-reconfigurable/radiation pattern RA increase the degree of freedom and enhancing the system’s performance. The usage of such antennas greatly enhances capacity by enabling a choice of various polarization configurations and pattern diversity. Antenna arrays that can be reconfigured are also an appealing MIMO system solution that needs to retain robust communication channels, particularly in portable gadgets where the area is limited.
Delir kompakt
Authors: Rahman Shibley
Published: December 2023

Das Praxishandbuch hilft Pflege-, Gesundheits- und Therapieberufen bedürfnisgerecht und personzentriert mit Menschen mit einem Delir umzugehen. Der Autor
• schärft das Bewusstsein von Praktiker_innen für die Risikofaktoren eines sich entwickelnden oder die Zeichen eines bestehenden Delirs
• zeigt auf, wie man das Risiko eines Delirs reduziert und einem entstehenden Delir vorbeugt
• nennt direkte Pflegeinterventionen zur Delirprävention, wie die Vermittlung von Zeitgebern, Realitätsorientierung, Hilfsmittelversorgung, Lärmreduktion und Schmerzmanagement sowie die Förderung von Besuchen, Hydratation, Kontinenz, Schlaf und einer sanften Pflege
• erläutert hilfreiche Formen der Kommunikation mit Menschen mit einem (drohenden) Delir
• beschreibt gesundheitsfördernde Intervention beim Menschen mit einem Delir bezüglich: Atmen, Bewegung, Ernährung, Familienzusammenhalt, Medikamenten-screening, Sturzgefahr, Immobilitätsfolgen und Schlaf
• beschreibt und begründet zahlreiche pharmakologische, nicht-pharmakologische, umgebungsbezogene (Licht /Lärm), komplementäre (Musik) und comfortbezogene Intervention
• benennt patientenorientierte Behandlungsziele und Kriterien zur Evaluation der Behandlungsergebnisse
• gewichtet die Erfahrungen von Patienten hoch in der Behandlung und hilft Menschen, die ein Delir durchlebt haben, dieses zu verarbeiten
• liefert einen didaktisch gut strukturierten Texte mit Lernzielen, Patienteninformationen, Definitionen und Fallbeispielen sowie zusätzliche Infoboxen
• zeigt, wie einem Delir im Kontext der End-of-Life-Care begegnet werden und wie dieses gemildert werden kann
• beschreibt und analysiert, wie Angehörige ein Delir eines Familienmitglieds erleben und verarbeiten
• stellt das Basler Demenz- und Delirmanagement-Programm ausführlich vor
• stellt das Konzept der europaweit einzigartigen akut-geriatrisch geführten DelirUnit vor.
Strong Physical Contrasts Across Two Mid‐Lithosphere Discontinuities Beneath the Northwestern United States: Evidence for Cratonic Mantle Metasomatism
Authors: Liu Tianze , Chin Emily J. , Shearer Peter
Published: December 2023

Mid‐lithosphere discontinuities are seismic interfaces likely located within the lithospheric mantle of stable cratons, which typically represent velocities decreasing with depth. The origins of these interfaces are poorly understood due to the difficulties in both characterizing them seismically and reconciling the observations with thermal‐chemical models of cratons. Metasomatism of the cratonic lithosphere has been reported by numerous geochemical and petrological studies worldwide, yet its seismic signature remains elusive. Here, we identify two distinct mid‐lithosphere discontinuities at ∼87 and ∼117 km depth beneath the eastern Wyoming craton and the southwestern Superior craton by analyzing seismic data recorded by two longstanding stations. Our waveform modeling shows that the shallow and deep interfaces represent isotropic velocity drops of 2%–8% and 4%–9%, respectively, depending on the contributions from changes in radial anisotropy and density. By building a thermal‐chemical model including the regional xenolith thermobarometry constraints and the experimental phase‐equilibrium data of mantle metasomatism, we show that the shallow interface probably represents the metasomatic front, below which hydrous minerals such as amphibole and phlogopite are present, whereas the deep interface may be caused by the onset of carbonated partial melting. The hydrous minerals and melts are products of mantle metasomatism, with CO2‐H2O‐rich siliceous melt as a probable metasomatic reagent. Our results suggest that mantle metasomatism is probably an important cause of mid‐lithosphere discontinuities worldwide, especially near craton boundaries, where the mantle lithosphere may be intensely metasomatized by fluids and melts released by subducting slabs.
Investigating the Impact of Irrigation on Malaria Vector Larval Habitats and Transmission Using a Hydrology‐Based Model
Authors: Jiang Ai‐Ling , Lee Ming‐Chieh , Selvaraj Prashanth , Degefa Teshome , Getachew Hallelujah , Merga Hailu , Yewhalaw Delenasaw , Yan Guiyun , Hsu Kuolin
Published: December 2023

A combination of accelerated population growth and severe droughts has created pressure on food security and driven the development of irrigation schemes across sub‐Saharan Africa. Irrigation has been associated with increased malaria risk, but risk prediction remains difficult due to the heterogeneity of irrigation and the environment. While investigating transmission dynamics is helpful, malaria models cannot be applied directly in irrigated regions as they typically rely only on rainfall as a source of water to quantify larval habitats. By coupling a hydrologic model with an agent‐based malaria model for a sugarcane plantation site in Arjo, Ethiopia, we demonstrated how incorporating hydrologic processes to estimate larval habitats can affect malaria transmission. Using the coupled model, we then examined the impact of an existing irrigation scheme on malaria transmission dynamics. The inclusion of hydrologic processes increased the variability of larval habitat area by around two‐fold and resulted in reduction in malaria transmission by 60%. In addition, irrigation increased all habitat types in the dry season by up to 7.4 times. It converted temporary and semi‐permanent habitats to permanent habitats during the rainy season, which grew by about 24%. Consequently, malaria transmission was sustained all‐year round and intensified during the main transmission season, with the peak shifted forward by around 1 month. Lastly, we evaluated the spatiotemporal distribution of adult vectors under the effect of irrigation by resolving habitat heterogeneity. These findings could help larval source management by identifying transmission hotspots and prioritizing resources for malaria elimination planning.
Precipitation Efficiencies in a Climatology of Southern Ocean Extratropical Cyclones
Authors: Dacre H. F. , Martinez‐Alvarado O. , Hodges K. I.
Published: December 2023

Precipitation efficiency refers to the amount of water that is lost from the atmosphere through precipitation compared to the available water vapor in the atmosphere. This metric plays a critical role in understanding precipitation patterns. However, calculating precipitation efficiency for extratropical cyclones can be challenging because cyclones are dynamic and move through the atmosphere as they evolve. To overcome this challenge, our study uses ERA5 reanalysis data to estimate precipitation efficiencies for 400 Southern Ocean cyclones, with a frame of reference that moves with the individual cyclones. Our findings indicate that at maximum intensity, average precipitation efficiencies reach a maximum of 60%/6 hr near the warm front where ascent rates are the largest. Typically, within 24–36 hr after cyclogenesis, all of the initial water vapor available within 500 km of a cyclone center is lost due to precipitation. However, a cyclone's precipitating phase is prolonged due to local evaporation and moisture flux convergence (MFC), which replenish the moisture lost via precipitation. Close to the cyclone center, MFC provides additional moisture from the environment into which cyclones are traveling. On average, this extends a cyclone's precipitation phase to over 60 hr after cyclogenesis. Thus, while moisture from the genesis location is quickly removed from the cyclone via precipitation, cyclones are replenished by moisture along their track, which doubles the timescale for a cyclone's precipitating phase.
Retina as a potential biomarker in schizophrenia spectrum disorders: a systematic review and meta-analysis of optical coherence tomography and electroretinography
Authors: Komatsu Hiroshi , Onoguchi Goh , Silverstein Steven M. , Jerotic Stefan , Sakuma Atsushi , Kanahara Nobuhisa , Kakuto Yoshihisa , Ono Takashi , Yabana Takeshi , Nakazawa Toru , Tomita Hiroaki
Published: December 2023

Introduction

Abnormal findings on optical coherence tomography (OCT) and electroretinography (ERG) have been reported in participants with schizophrenia spectrum disorders (SSDs). This study aims to reveal the pooled standard mean difference (SMD) in retinal parameters on OCT and ERG among participants with SSDs and healthy controls and their association with demographic characteristics, clinical symptoms, smoking, diabetes mellitus, and hypertension.

Methods

Using PubMed, Scopus, Web of Science, and PSYNDEX, we searched the literature from inception to March 31, 2023, using specific search terms. This study was registered with PROSPERO (CRD4202235795) and conducted according to PRISMA 2020.

Results

We included 65 studies in the systematic review and 44 in the meta-analysis. Participants with SSDs showed thinning of the peripapillary retinal nerve fiber layer (pRNFL), macular ganglion cell layer- inner plexiform cell layer, and retinal thickness in all other segments of the macula. A meta-analysis of studies that excluded SSD participants with diabetes and hypertension showed no change in results, except for pRNFL inferior and nasal thickness. Furthermore, a significant difference was found in the pooled SMD of pRNFL temporal thickness between the left and right eyes. Meta-regression analysis revealed an association between retinal thinning and duration of illness, positive and negative symptoms. In OCT angiography, no differences were found in the foveal avascular zone and superficial layer foveal vessel density between SSD participants and controls. In flash ERG, the meta-analysis showed reduced amplitude of both a- and b-waves under photopic and scotopic conditions in SSD participants. Furthermore, the latency of photopic a-wave was significantly shorter in SSD participants in comparison with HCs.

Discussion

Considering the prior report of retinal thinning in unaffected first-degree relatives and the results of the meta-analysis, the findings suggest that retinal changes in SSDs have both trait and state aspects. Future longitudinal multimodal retinal imaging studies are needed to clarify the pathophysiological mechanisms of these changes and to clarify their utility in individual patient monitoring efforts.
Immunophenotypic assessment of clonal plasma cells and B-cells in bone marrow and blood in the diagnostic classification of early stage monoclonal gammopathies: an iSTOPMM study
Authors: Pérez-Escurza Oihane , Flores-Montero Juan , Óskarsson Jón Þórir , Sanoja-Flores Luzalba , del Pozo Julio , Lecrevisse Quentin , Martín Silvia , Reed Elín Ruth , Hákonardóttir Guðlaug Katrín , Harding Stephen , Þorsteinsdóttir Sigrún , Rögnvaldsson Sæmundur , Love Thorvardur Jon , Durie Brian , Kristinsson Sigurður Yngvi , Orfao Alberto
Published: December 2023

Monoclonal gammopathy of undetermined significance (MGUS) is the earliest discernible stage of multiple myeloma (MM) and Waldenström’s macroglobulinemia (WM). Early diagnosis of MG may be compromised by the low-level infiltration, undetectable to low-sensitive methodologies. Here, we investigated the prevalence and immunophenotypic profile of clonal (c) plasma cells (PC) and/or cB-lymphocytes in bone marrow (BM) and blood of subjects with a serum M-component from the iSTOPMM program, using high-sensitive next-generation flow cytometry (NGF), and its utility in the diagnostic classification of early-stage MG. We studied 164 paired BM and blood samples from 82 subjects, focusing the analysis on: 55 MGUS, 12 smoldering MM (SMM) and 8 smoldering WM (SWM). cPC were detected in 84% of the BM samples and cB-lymphocytes in 45%, coexisting in 39% of cases. In 29% of patients, the phenotypic features of cPC and/or cB-lymphocytes allowed a more accurate disease classification, including: 19/55 (35%) MGUS, 1/12 (8%) SMM and 2/8 (25%) SWM. Blood samples were informative in 49% of the BM-positive cases. We demonstrated the utility of NGF for a more accurate diagnostic classification of early-stage MG.
Siglec-15 on macrophages suppress the immune microenvironment in patients with PD-L1 negative non-metastasis lung adenocarcinoma
Authors: Huang Ziqi , Guo Yan , Li Baihui , Shen Meng , Yi Yeran , Li Li , Zhao Xiaohe , Yang Lili
Published: December 2023

Sialic acid-binding immunoglobulin-like lectin 15 (Siglec-15) is an immune checkpoint molecule with sequence homology to programmed cell death ligand 1 (PD-L1), which is mainly expressed on macrophages and tumor cells. However, whether Siglec-15-induced immunosuppression and poor prognosis are independent of PD-L1 remains unclear. In this study, we collected samples of 135 non-small cell lung cancers and found that Siglec-15 and PD-L1 expression were independent in non-small cell lung cancer by multiple immunofluorescence staining. Siglec-15 on macrophages (Mφ-Siglec-15) was significantly associated with DFS (p < 0.05) in PD-L1− patients with non-metastasis lung adenocarcinoma, not in PD-L1+ or lung squamous cell carcinoma patients. Moreover, stromal Siglec-15+ macrophages of Mφ-Siglec-15+PD-L1− patients were significantly more than those of Mφ-Siglec-15−PD-L1− patients (p = 0.002). We further found that Siglec-15+ macrophages polarized toward M2 and produced more IL-10, negatively associated with inflamed immunophenotype in PD-L1− patients and may inhibit CD8+T cells infiltration. In conclusion, PD-L1-independent Siglec-15+ macrophages contribute to the formation of an immunosuppressive microenvironment in non-metastasis lung adenocarcinoma patients, which may cause a higher risk of recurrence. Siglec-15 could be a potential target for normalizing cancer immunotherapy, benefiting patients who fail to respond to anti-PD-L1 therapy.
Impact of structurally diverse polysaccharides on colonic mucin O-glycosylation and gut microbiota
Authors: Zhao Tong , Zhang Yue , Nan Linhua , Zhu Qing , Wang Shukai , Xie Yutao , Dong Xinling , Cao Cui , Lin Xiaoliang , Lu Yu , Liu Yuxia , Huang Linjuan , Gong Guiping , Wang Zhongfu
Published: December 2023

Understanding how dietary polysaccharides affect mucin O-glycosylation and gut microbiota could provide various nutrition-based treatments. Here, the O-glycan profile of the colonic mucosa and gut microbiome were investigated in C57BL/6J mice fed six structurally diverse dietary polysaccharides and a mixture of six fibers. Dietary polysaccharides increased total O-glycans, mainly by stimulating neutral glycans. Highly branched arabinogalactan promoted terminally fucosylated core 1 O-glycans; whereas linear polysaccharides, including pectin, konjac glucomannan, inulin, and the fiber mixture, favored terminally di-fucosylated O-glycans. The last three polysaccharides also lowered the level of sulfated O-glycans and sialylated mono-fucosylated O-glycans. Varied monosaccharide composition in mixed polysaccharides had a synergistic beneficial effect, boosting fucosylated neutral glycans, decreasing acidic glycans, and stimulating microbial richness and diversity. Dietary polysaccharides containing arabinose and sulfate groups enhanced the relative abundances of Akkermansia and Muribaculaceae, respectively. The present comparison reveals the relationship between dietary polysaccharide structure, mucin O-glycan composition, and intestinal microorganisms.
Age-associated alterations in thalamocortical structural connectivity in youths with a psychosis-spectrum disorder
Authors: Lewis Lydia , Corcoran Mary , Cho Kang Ik K. , Kwak YooBin , Hayes Rebecca A , Larsen Bart , Jalbrzikowski Maria
Published: December 2023

Psychotic symptoms typically emerge in adolescence. Age-associated thalamocortical connectivity differences in psychosis remain unclear. We analyzed diffusion-weighted imaging data from 1254 participants 8–23 years old (typically developing (TD):N = 626, psychosis-spectrum (PS):N = 329, other psychopathology (OP):N = 299) from the Philadelphia Neurodevelopmental Cohort. We modeled thalamocortical tracts using deterministic fiber tractography, extracted Q-Space Diffeomorphic Reconstruction (QSDR) and diffusion tensor imaging (DTI) measures, and then used generalized additive models to determine group and age-associated thalamocortical connectivity differences. Compared to other groups, PS exhibited thalamocortical reductions in QSDR global fractional anisotropy (GFA,p-values range = 3.0 × 10–6–0.05) and DTI fractional anisotropy (FA,p-values range = 4.2 × 10–4–0.03). Compared to TD, PS exhibited shallower thalamus-prefrontal age-associated increases in GFA and FA during mid-childhood, but steeper age-associated increases during adolescence. TD and OP exhibited decreases in thalamus-frontal mean and radial diffusivities during adolescence; PS did not. Altered developmental trajectories of thalamocortical connectivity may contribute to the disruptions observed in adults with psychosis.