Potential Space Research Articles

”When we speak faculty listen:” exploring potential spaces for students to support lecturer academic development

ABSTRACT Lecturers’ engagement in professional development activities to enhance their academic practice is firmly embedded within the landscape of higher education. Although enhancing the student learning experience underpins teaching-related continuing professional development (CPD), interestingly the role of students in supporting such activities has been underexplored. Drawing on data captured from eight student representatives interviewed in the context of an international impact evaluation, we examine student awareness of, and attitudes towards, lecturers’ CPD. Participants recognised the value of lecturers engaging in CPD but believed it to be an activity they were removed from, and had little opportunity to engage with. We consider how this perspective could be changed in two ways. Firstly, we reflect on the experiences of students at one university where their contributions to lecturers’ development were legitimised and valued. Secondly, we discuss the potential of integrative approaches, such as students as consultants or reverse mentoring. We argue that these approaches may challenge existing hierarchies that limit students engaging in lectures and create spaces through which students can positively contribute to lecturers’ CPD.

6G THz Propagation Channel Characteristics and Modeling: Recent Developments and Future Challenges

The terahertz (THz) band is expected to play a more important role in the sixth generation (6G) communication networks. It can provide large bandwidth and high-speed transmission rate to support prospective 6G scenarios from space to ground and from macro-scale to nano-scale. However, the THz channel characteristics vary greatly for different scenarios. This paper presents a multi-dimensional overview of propagation channel characteristics and modeling for potential THz communication scenarios, including ground, space, and nano-scale communications. The atmospheric attenuation and propagation mechanisms are firstly discussed for ground scenarios. Then, the channel measurements, characteristics, and models for specific ground scenarios, including indoor office, data center, kiosk, smart rail, and massive MIMO are investigated. Following this, the THz space communication channels are summarized according to the satellite altitude. Futhermore, THz nano-scale communication channels including on-chip and body centric are analyzed. Finally, future research challenges are outlined.

The Impact of Bias Row Noise to Photometric Accuracy: Case Study Based on a Scientific CMOS Detector

We tested a new model of CMOS detector manufactured by the Gpixel Inc, for potential space astronomical application. In laboratory, we obtain some bias images under the typical application environment. In these bias images, clear random row noise pattern is observed. The row noise also contains some characteristic spatial frequencies. We quantitatively estimated the impact of this feature to photometric measurements, by making simulated images. We compared different bias noise types under strict parameter control. The result shows the row noise will significantly deteriorate the photometric accuracy. It effectively increases the readout noise by a factor of 2–10. However, if it is properly removed, the image quality and photometric accuracy will be significantly improved.

Dialogical devices and political possibilities of art: Occupy, Inhabit, Resist

‘Dialogical Devices and Political Possibilities of Art: Occupy, Inhabit, Resist,’ is a conversation with Sandra Calvo an interdisciplinary artist based in Mexico, exploring the intersection of art and struggles for home and territory. Sandra Calvo elucidates her dialogical approach in accompanying communities in struggle, employing dialogical devices that foster conversations and potential spaces for expression and re-signification in conflict scenarios. In this conversation Sandra talks about her work in Colombia and Mexico underlying the importance of listening and dialogue to denounce and confront extractivist and dispossession projects.

Measuring uterine cavity volume with sonohysterography: A new objective method.

The uterine cavity is a potential space with limited methods for evaluating its volume, limiting the evaluation of interventions' effectiveness in various uterine conditions. This study aims to objectively measure the uterine cavity volume using sonohysterography coupled with a Foley catheter to provide a normative model of age and parity-related uterine cavity volume. The research included 35 women (group 1) with a total abdominal hysterectomy and 150 women (group 2) who underwent sonohysterography for various gynecologic indications. Saline infusion sonography was administered to all patients. The most common shape obtained after the saline infusion was taken to measure the uterine cavity's dimensions and volume. The uterine cavity volumes, as measured by sonohysterography, and the volumes of saline injected after the hysterectomy were compared. A significant association exists between uterine cavity volumes measured by sonohysterography and true volumes measured immediately after hysterectomy (p = 0.001). The association between uterine cavity volume measured by sonohysterography and using only a Foley catheter balloon was statistically insignificant (p = 0.13). A statistically significant positive association was observed between the uterine cavity volume and the patient's age and parity (p ⩽ 0.05). Measuring the uterine cavity volume using a paediatric Foley catheter balloon coupled with sonohysterography offers an objective approach to measuring a normal (without gross pathologies) uterus volume. This technique would improve the diagnostic accuracy and the management of women with distinct uterine cavity morphologies.

2028 Incidence of cavum septum pellucidum on CT brain in patients referred from memory clinic, an observational pilot study

Abstract Background Septum pellucidum is a double-membrane separating the frontal horns of the lateral ventricles of the brain. [1] Cavum septum pellucidum (CSP) refers to a potential space between these membranes. CSP is associated with some psychiatric disorders. [2] Radiological CSP has been evaluated as a possible in-vivo biomarker for chronic traumatic encephalopathy (CTE), a neurodegenerative condition affecting, particularly, retired athletes who experienced repetitive, low impact head trauma. [3] Method Our study evaluated the incidence of radiological CSP among a cohort undergoing investigation for cognitive impairment in memory clinic. A list of patient Community Health Index (CHI) numbers corresponding to patients referred to CT brain from a community memory clinic in North West Glasgow between October 2019 and March 2020 was generated. Approval for use of imaging for research purposes was granted by local imaging department. Images were viewed by first author following a session from second author on basic relevant anatomy. Positive cases were defined as those with a visible CSP. Results There were twenty-eight (n=28) cases in total. CSP was observed in one (n=1) case. Radiological CSP has been suggested as a potential biomarker for CTE. While this study does not involve review of the clinical or personal history of the subjects, it does include a cohort with clinically-relevant symptoms. We included CT only, while current evidence makes observations on MRI [3]. Locally CT is more available and the initial assessment of such patients uses CT in the first instance. Conclusion Further evidence is required to establish CSP as a reliable in vivo biomarker of CTE. [1] Das et al, in StatPearls [Internet], 2022 [2] Wang et al, J Neuropsychiatry Clin Neurosci. 2020; 32(2):175-184 [3] Alosco et al Neurotherapeutics. 2021; 18(2):772-791

A Case of Surgical Gloves Mimicking a Thyroid Lesion in a Patient With Multinodular Goiter

Retained surgical bodies are usually associated with procedures that involve large surgical spaces, such as thoracic or abdominal cavities; however, caution must also be taken with otorhinolaryngology surgeries as they also involve various potential surgical spaces. Retained surgical bodies usually reported are the remainders of surgical materials or instruments, but as surgical drains or packing materials may be left behind, special care must be taken when removing them. In this article, we report, with a literature review, as case of retained surgical body from a surgery 33 years ago that was mistaken for a thyroid nodule.

Between ‘block course relationships’ and abstinence: cultures of sexuality among students at Addis Ababa University

Inspired by African and other feminist scholarship on gender, sexuality and agency, this article studies narrations of norms and practices in sexual relationships between university students. A main aim of the article is to move beyond the problem focus in earlier scholarship on women, sexuality and reproduction, and to identify potential spaces of freedom and expansion of female agency. The article is based on qualitative research conducted with students at Addis Ababa University. The findings a vivid space for male-female relationships. Study participants report being sexually engaged as “the new normal” and claim that many female students are active both in seeking relationships and in discontinuing them. These ideas and practices indicate increasing female agency and emerge in stark contrast to dominant social norms for sexual conduct, which demand chastity before marriage, particularly for women. Students are conscious of this discrepancy and bring it up in their narratives. Findings also show that some students prefer to stay abstinent and make an effort to avoid sexual relations. We argue that expressions of female agency are evident not only in norm-transgressive sexual conduct, but also in norm-conforming strategies of sexual abstinence.

Design Rules, Accurate Enthalpy Prediction, and Synthesis of Stoichiometric Eu3+ Quantum Memory Candidates.

Stoichiometric Eu3+ compounds have recently shown promise for building dense, optically addressable quantum memory as the cations' long nuclear spin coherence times and shielded 4f electron optical transitions provide reliable memory platforms. Implementing such a system, though, requires ultranarrow, inhomogeneous linewidth compounds. Finding this rare linewidth behavior within a wide range of potential chemical spaces remains difficult, and while exploratory synthesis is often guided by density functional theory (DFT) calculations, lanthanides' 4f electrons pose unique challenges for stability predictions. Here, we report DFT procedures that reliably reproduce known phase diagrams and correctly predict two experimentally realized quantum memory candidates. We are the first to synthesize the double perovskite halide Cs2NaEuF6. It is an air-stable compound with a calculated band gap of 5.0 eV that surrounds Eu3+ with mononuclidic elements, which are desirable for avoiding inhomogeneous linewidth broadening. We also analyze computational database entries to identify phosphates and iodates as the next generation of chemical spaces for stoichiometric quantum memory system studies. This work identifies new candidate platforms for exploring chemical effects on quantum memory candidates' inhomogeneous linewidth while also providing a framework for screening Eu3+ compound stability with DFT.

The Spectrum of Global Electron Content: A New Potential Indicator of Space Weather Activity.

The time evolution of the total number of free electrons in the Earth's ionosphere, i.e., the Global Electron Content (GEC), during more than two solar cycles is analyzed in this work. The GEC time series has been extracted from the Global Ionospheric Maps (GIMs) of Vertical Total Electron Content (VTEC) estimated by UPC-IonSAT with TOMION-v1 software from global GPS measurements since the end of 1996. A dual-layer voxel-based tomographic model solved with a forward Kalman scalar filter, from dual-frequency carrier GPS data only, provides the so-called UQRG GIM after VTEC kriging interpolation, with a resolution of 15 min in time, 5° in longitude and 2.5° in latitude. UQRG is one of the best behaving GIMs in the International GNSS Service (IGS).In this context, the potential application of the GEC spectrum evolution as a potential space weather index is discussed and demonstrated.

Spremenljive meje literature: fikcija, »fakcija« in tretja razsežnost

The third dimension of literature, defined as fiction, derives from the nature of the existence of literature. Despite attempts to distance itself from narrative, it ensures the existence of clear dividing lines between literature itself and that which is external to it, even when these borders are intentionally blurred in the text. This is a space of opportunity and potential, of that which is temporally unlimited and as such immortal.

A Lean Networking Framework (LeaNet): Potential Technical Space and Approaches for Latency Sensitive Mobile Services

With the development of mobile services such as the Internet of vehicles, industrial Internet, and holographic communication, ultra-low latency, ultra-high reliability, and pervasive mobility have become common indicators of the comprehensive interconnection between human-machine-things. These common indicators are the foundations to expand the application scenarios of 5G communication technologies and are also the key to achieving the 6G vision. This paper summarizes the technologies in various layers of low-latency mobile networks from a panoramic perspective and highlights the limitations of previous works in terms of mobile network architecture, virtualization technology, and service function chaining (SFC) deployment. Also, the potential techniques space from these three aspects is analyzed. Based on this, a technical framework, named lean networking (LeaNet), is proposed in this paper to reduce latency for network services through global optimization. The compact architecture eliminates triangular routing, thus significantly simplifying the network architecture and reducing both link and node latency. Meanwhile, the network functions virtualization with real-time performance provides a feasible solution to hybrid deployment of multi-scenario and diversified services, especially for latency-sensitive applications. Besides, the framework for intelligent and closed-loop SFC deployment with low latency and high resource efficiency is established and analyzed comprehensively. Simulation studies verify that LeaNet is superior in reducing latency over typical 5G core networks.

Vision-Centric BEV Perception: A Survey.

In recent years, vision-centric Bird's Eye View (BEV) perception has garnered significant interest from both industry and academia due to its inherent advantages, such as providing an intuitive representation of the world and being conducive to data fusion. The rapid advancements in deep learning have led to the proposal of numerous methods for addressing vision-centric BEV perception challenges. However, there has been no recent survey encompassing this novel and burgeoning research field. To catalyze future research, this paper presents a comprehensive survey of the latest developments in vision-centric BEV perception and its extensions. It compiles and organizes up-to-date knowledge, offering a systematic review and summary of prevalent algorithms. Additionally, the paper provides in-depth analyses and comparative results on various BEV perception tasks, facilitating the evaluation of future works and sparking new research directions. Furthermore, the paper discusses and shares valuable empirical implementation details to aid in the advancement of related algorithms.

A cobalt(II) coordination polymer-derived catalyst engineered via temperature-induced semi-reversible single-crystal-to-single-crystal (SCSC) dehydration for efficient liquid-phase epoxidation of olefins.

Single-crystal-to-single-crystal (SCSC) transformations provide more avenues for phase transitions, which have piqued great interest in crystal engineering. In this work, a 3D Co(II)-based coordination polymer (CP), {Co2(OH2)8(btec)}·4H2O (1), (where (btec)4- = 1,2,4,5-benzenetetracarboxylate) undergoes SCSC transition upon heating at 180 °C to afford an anhydrous phase [Co2(btec)] (1'). Room-temperature water-vapour induced semi-reversible SCSC transformation of 1' involves condensation of two water molecules coordinating to the metal cluster, yielding a new framework [Co2(OH2)2(btec)] (2). These SCSC transitions were accomplished through a sequential bond breaking and new bond formation process which was accompanied by colour changes from orange (1) → violet (1') → pink (2). All materials were structurally elucidated by single-crystal X-ray diffraction (SCXRD) and further established by various analytical techniques. According to SCXRD data, all the frameworks possess octahedral geometries around the cobalt(II) sphere. SCXRD studies further revealed that 1 is a polymeric architecture with a binodal 4-c sql topology while 1' and 2 possess (3,6)-c kgd and (4,6)-c scu 3D nets, respectively. By virtue of multitopicity exhibited by the tetracarboxylate, the coordination number of the linker around the Co(II) sphere increased from four (in 1) to eight (in 1') and then decreased to six (in 2). Most interestingly, permanent porosity could be observed for the dihydrate 2, originated from potential void space as substantiated by dinitrogen (N2) sorption isotherm. These porous frameworks were active catalysts for the aerobic epoxidation of the model substrate cyclohexene using molecular oxygen (O2) as the final oxidant in the presence of the sacrificial i-butyraldehyde (IBA) reductant. For using the dihydrous phase 2, cyclohexene and various other olefins were catalytically oxidised to their corresponding epoxides with up to 38.5% conversion and 99.0% selectivity. The catalyst 2 can be expediently recycled in four runs without significant loss of activity. This research demonstrates that a little innovation in the active-site-engineered organic-inorganic hybrid materials can significantly enhance the catalytic performance and selectivity of coordination polymer-derived heterogeneous catalysts.

One-Step Multiview Clustering via Adaptive Graph Learning and Spectral Rotation.

In graph based multiview clustering methods, the ultimate partition result is usually achieved by spectral embedding of the consistent graph using some traditional clustering methods, such as k -means. However, optimal performance will be reduced by this multistep procedure since it cannot unify graph learning with partition generation closely. In this article, we propose a one-step multiview clustering method through adaptive graph learning and spectral rotation (AGLSR). For every view, AGLSR adaptively learns affinity graphs to capture similar relationships of samples. Then, a spectral embedding is designed to take advantage of the potential feature space shared by different views. In addition, AGLSR utilizes a spectral rotation strategy to obtain the discrete clustering labels from the learned spectral embeddings directly. An effective updating algorithm with proven convergence is derived to optimize the optimization problem. Sufficient experiments on benchmark datasets have clearly demonstrated the effectiveness of the proposed method in six metrics. The code of AGLSR is uploaded at https://github.com/tangchuan2000/AGLSR.

Gaseous Object Detection.

Object detection, a fundamental and challenging problem in computer vision, has experienced rapid development due to the effectiveness of deep learning. The current objects to be detected are mostly rigid solid substances with apparent and distinct visual characteristics. In this paper, we endeavor on a scarcely explored task named Gaseous Object Detection (GOD), which is undertaken to explore whether the object detection techniques can be extended from solid substances to gaseous substances. Nevertheless, the gas exhibits significantly different visual characteristics: 1) saliency deficiency, 2) arbitrary and ever-changing shapes, 3) lack of distinct boundaries. To facilitate the study on this challenging task, we construct a GOD-Video dataset comprising 600 videos (141,017 frames) that cover various attributes with multiple types of gases. A comprehensive benchmark is established based on this dataset, allowing for a rigorous evaluation of frame-level and video-level detectors. Deduced from the Gaussian dispersion model, the physics-inspired Voxel Shift Field (VSF) is designed to model geometric irregularities and ever-changing shapes in potential 3D space. By integrating VSF into Faster RCNN, the VSF RCNN serves as a simple but strong baseline for gaseous object detection. Our work aims to attract further research into this valuable albeit challenging area.

Scenario Simulation of Urban Land Use and Ecosystem Service Coupling Major Function-Oriented Zoning

Simulations of land use/land cover (LULC) and ecosystem services (ES), which integrate national land policies, reflect the development of land and ecological functions under different scenarios and are crucial for accurately predicting and optimizing urban ecosystem sustainable development. To effectively characterize the urban development trend that complies with urban land policies and spatial differences, we combined major function-oriented zoning (MFOZ) and simulated LULC and ES [including water yield (WY), soil retention (SR), carbon storage (CS), and habitat quality (HQ)] within Beijing–Tianjin–Hebei (BTH) urban agglomeration under multiple scenarios. Based on the improved gray multi-objective optimization (IGMOP) model, the patch-generating land simulation (PLUS) model, and the integrated evaluation of ecosystem services and trade-offs (InVEST) model, three scenarios were designed: business as usual (BAU), economic development (ED), and ecological conservation (EC) scenarios. Results demonstrated higher accuracy with the LULC simulation coupling MFOZ. Under BAU, ED, and EC scenarios, the ecological land (EL) area was 924.99 × 10 4 , 904.45 × 10 4 , and 953.59 × 10 4 hm 2 , respectively. Compared to 2020, it increased by 0.77% and 1.95% under BAU and EC scenarios and decreased by 0.08% under ED scenario. The LULC changes under different scenarios influenced ES changes. Trade-offs occurred between WY&SR and CS&HQ under BAU and ED scenarios (WY&SR increased, CS&HQ decreased), while different ES types synergistically increased under EC scenario. Impervious surfaces and vegetation positively affected WY&SR, while forestland and impervious surfaces positively and negatively affected CS&HQ, respectively. The simulation coupling MFOZ may provide new insights for exploring more accurate ecological patterns, identifying potential sustainable spaces, and determining priority projects.

Geological Storage Conditions and Potential Analysis of Carbon Dioxide in the High-steep Fold Belt in Eastern Sichuan Basin

Carbon sequestration refers to the technology of capturing carbon and storing it safely instead of directly discharging CO2 into the atmosphere. Rock salt is a promising CO2 reservoir, and the underground rock salt structure formed by salt cavern reservoirs in geological history has a natural sealing function. Storing carbon dioxide in salt caves can ensure that carbon dioxide is stably stored underground for a long time. However, at present, there are few studies on carbon sequestration in abandoned salt caves. This study analyses the characteristics of carbonate-evaporite strata in the high fold zone of eastern Sichuan and qualitatively evaluates Triassic carbonate-evaporite layers formed in the depth range of 800-3000 m in various sedimentary basins in Chongqing. A large set of carbonates-evaporites are developed in Chongqing, and the carbonate rocks near evaporites have low porosity and permeability, which can be used as CO2 storage caprock in salt cavities. Thick evaporated strata can also provide a good cover for CO2 storage in abandoned salt caves, which has great potential space resources.

Arts-Based Methods in Migration Research. A Methodological Analysis on Participatory Visual Methods and Their Transformative Potentials and Limits in Studying Human Mobility

In the last decades, the growing use of participatory methodologies and creative methods in migration research has opened innovative ways to collect, analyze, and disseminate data. These approaches encourage experimental, interdisciplinary, and collaborative work through artistic methods to study human mobility and expand the community of inquiry and interpretation, often intervening in contexts of social injustice and exclusion. This article is intended as a reflection on the potentialities and limits of the use of arts-based methods in migration research. The contribution opens with a review of how participatory visual methods have been framed in the field of migration studies. The second part explores an example of a collaborative study that adopted photovoice and sensory mapping to reflect on the concept of “welcoming spaces”. Finally, it analyses arts-based methods as a potential space for social change, focusing on three main dimensions: collective learning, relational aesthetics, and knowledge co-construction.

Deep Neck Space Infection among Diabetic and Non Diabetic Patients: A Prospective Cohort Study

Introduction: Deep Neck Space Infections (DNSI) were first described by Galen in the second century. They refer to infections of potential spaces and fascial planes of the neck and are a cause of significant morbidity and mortality. Additionally, the presence of Diabetes Mellitus (DM) increases the possibility of life-threatening complications. Aim: To compare the clinical characteristics, bacteriological spectrum, aetiological aspects, biochemical parameters, treatment protocol, complications, and mortality rate among diabetic and non diabetic patients with DNSIs. Materials and Methods: A prospective cohort study was conducted in the Department of Otorhinolaryngology, Mysore Medical College and Research Institute, Mysuru, Karnataka, India from January 2022 to December 2022. 52 patients with DNSIs were grouped into diabetics and non diabetics. The age group of the patients included in the study was 18-65 years. A detailed history, clinical examination, haematological investigations, and Contrast-enhanced Computed Tomography (CECT) were performed. Patients were either treated conservatively or underwent incision and drainage, depending on the presentation. The data obtained were analysed using the Statistical Package for the Social Sciences (SPSS) version 20.0. Results: The age range was 18 to 65 years, with a mean age of 51 years (51.35±13.46 years) in the diabetic group and 37 years (37.9±13.2 years) in the non diabetic group. Patients were divided into 26 (50%) diabetics and 26 (50%) non diabetics. Of the 52 patients, 34 (65.3%) were males and 18 (34.7%) were females. Multiple space involvement was present in eight patients among the diabetic group and three patients in the non diabetic group. Odontogenic infections constituted the leading foci in 17 (65.4%) of diabetics and 13 (50%) of non diabetics. In diabetics, 12 (46%) patients had high levels (>6.5%) of HbA1c, and Klebsiella was the causative organism in 9 (39%). A total of 23 (88.5%) diabetic patients underwent incision and drainage, while 13 (50%) non diabetic patients were treated conservatively. Among the diabetics, 21 (80.8%) patients had a hospital stay of >7 days, 7 (27%) patients had complications, and the mortality rate was observed in 5 (19.2%) patients. Conclusion: The study emphasises a definitive association of DM in the occurrence of DNSIs. Hence, the need for early detection and treatment of primary infections is highlighted, insisting on appropriate management of blood sugar levels.