bluuebunny/crossref_metadata_2025_split huggingface dataset:
Clinico-radiological factors affecting visual recovery in pituitary tumours
Authors: Kankane Vivek Kumar , Agrawal Harshit , Iyenger S.N. 
Published: September 2023

Objectives: It is a prospective, single institute, observational study: primary outcome measure; factors determining visual field improvement and secondary outcome measure; the relationship between severity of visual impairment and duration of symptoms.
Material and Methods: It is a prospective, single institute, observational study that will be conducted between January 2020 and January 2022 in the department of Neurosurgery at the G. R. Medical College &J.A. Group of Hospitals, Gwalior(M.P.), a tertiary centre in India. All patients were admitted to the neuro-surgery department & operated on basis of a CT Scan of head/MRI findings. Patients with Laboratory findings having hypopituitarism, diabetes insipidus (DI), and hyperprolactinemia and willing to undergo Endocrinological & visual field tests in inclusion criteria. Data obtained from the study will be analyse by using appropriate statistical tests or methods
Results: At present, series most common age presentation (36.7%) between 21-30 years. In our study, of the total patients, 60% were males and 40% were females. The male to female ratio is 2:1 most common complaint of vision loss and only 50% had hormonal symptoms. In our study 46.7% patients have duration of symptoms < 6 months and 6/6 - 6/24 visual acuity was present in 73.3% patients & 13.3% had optic atrophy(primary/secondary), 43.3%patients had bi-temporal hemianopia.
In our study Suprasellar extension was present in 90% of patients & Vascular invasion was seen in 26.7% of patients.
Conclusion: Good results are seen in patients who have a lesser duration of symptoms, and good pre-operative visual acuity has improved the final visual outcome. Post-operative visual recovery is most promising after 3 months to 1 year of surgery. immediate results of visual recovery should not be expected. Most patients presented with larger adenomas had poor visual recovery as compared to small adenomas. Patients who underwent endoscopic trans-nasal, trans-sphenoidal resection had better post-operative recovery.
Cervical carotid artery vasospasm during cerebral angiography
Authors: Ismail Mustafa , N. Abdulqader Muthanna , O. Ahmed Fatimah , Al-Khafaji Aktham O. , Al-Jehani Hosam , Hoz Samer S. 
Published: September 2023

Background: Vasospasm occurs commonly in the intracranial arteries as a complication of subarachnoid haemorrhage. On the other hand, extracranial Internal carotid artery (ICA) vasospasm is scarce, and it may occur due to mechanical manipulation during cerebral angiography. We report a case of cervical carotid artery vasospasm during diagnostic cerebral angiography, which caused anterior cerebral artery territory hypoperfusion, to discuss potential risk factors.
Case description: For a 22-year-old female with a ten-year history of epilepsy on multiple drugs, brain magnetic resonance imaging (MRI) showed frontal periventricular developmental venous anomaly. Diagnostic catheter cerebral angiography was used to better identify the vascular abnormality. In the procedure, extra steps were performed, including instruments being sterilized with CIDEX® OPA Solution (phthalaldehyde as the active ingredient), the reuse of the set including the catheters more than twice or triple times, and cold temperature of normal saline that was used in the flushing procedure. Under conscious sedation, the procedure went uneventful until the catheterization of the left carotid artery was performed, where severe vasospasm was noticed in the extracranial ICA, followed by cessation of flow in the ipsilateral ACA. Pulling the catheter to a more proximal location in the extracranial ICA was performed to alleviate the vasospasm. It took twelve minutes for the circulation to be restored, and that was under continuous irrigation and flushing. The patient did not develop any symptoms throughout the procedure or post-procedural course.
Conclusion: Chemical irritation from the sterilizing agent and reuse of the catheters could cause extracranial ICA vasospasm.
Ventriculoperitoneal shunt surgery in a Nigerian city
Authors: Udoffa Secundus Ukpong , Oga Stephen Agbomhekhe , Aduloju Folafoluwa Ayokunle , Kanu Okezie Obasi 
Published: September 2023

Introduction. Improvements in surgical techniques and advancements in antibiotic management have significantly reduced the complications associated with Ventriculoperitoneal Shunting which is still the most common procedure for the treatment of hydrocephalus. These complications are believed to be highest in Low and middle-income countries due to delayed presentation to care facilities. The authors report our experience of managing paediatric hydrocephalus in an institution with evolving Neurosurgical practice in North Central Nigeria.
Material and methods. We retrospectively reviewed all cases of VP shunting from 2011 to 2018 taking into consideration the demographics, aetiologies of hydrocephalus, length of hospital stay, postoperative morbidity and mortality, and overall outcome. Complications sought included, Surgical Site infections, shunt exposure, obstruction or any other cause of shunt malfunction. The minimum follow-up period was 24 months
Results. There were 27 VPS procedures done in 25 patients of whom 15 were males and 10 females (M:F ratio of 1.5:1). The age range was 8 days to 9 years with a median age of 5 months. Of the 25 cases, 24 (96%) were non-tumoral in origin comprising 17 congenital and 7 acquired hydrocephalus. At 2 years post shunt insertion, 21 (84%) of the 25 initial cases were still functional. The total complication rate was 28%, comprising Surgical Site infection, shunt exposure, shunt obstruction, seizure, and one death, There were 3 (12%) shunt failures from shunt obstruction (2) and shunt exposure (1).
Conclusion
With meticulous control of the surgical environment and improved experience in ventriculoperitoneal shunting, the complication rate can be significantly reduced. There is a need to increase the awareness of the population to the availability of care for seemingly hopeless conditions. The burden of the cost of care on individuals should be lightened through better health insurance coverage.
Surgical outcome of pineal region lesions in paediatric population
Authors: Kumar Pankaj , Bodeliwala Shaam , Pandey Sharad , Singh Daljit , Singh Hukum , Jagetia Anita , Srivastava A.K. , Kumar Anil , Nagar Vikas , Pandey Sharad 
Published: September 2023

Introduction. Pineal region pathologies are heterogenous, spectrum ranging from benign, infective to malignant in nature such as parenchymal, germ cell, glial, melanomas, metastatic, tubercular, etc. These lesions are commoner in the pediatric age group and have a variable outcome. The goal of this study is to present our experience regarding the surgical outcomes of pineal region lesions in the paediatric population.
Objective. The objective of this study is to access the surgical outcome of pineal region lesions in the paediatric population
Methods and Material. Eighty cases of pineal region lesions in the paediatric population (upto 15 years of age) operated in the neurosurgery department, G.B Pant Hospital New Delhi via either Occipital transtentorial or Supracerebellar Infratentorial approaches were retrospectively analyzed.
Results. There were four main groups of lesions with pineal parenchymal tumours (35 cases) being the commonest. Glial tumours were the next most common contributing 29 cases. Germ cell tumours comprise 7 and miscellaneous 9 cases.
The outcome showed graded improvement with the extent of tumour removal and 57 patients(71.25%) improved following surgery. The clinical status of 20 patients(25%) remained unchanged and 3(3.75%) deteriorated from their pre-operative status. 3 patients(3.75%) died in the immediate post-operative period and 11(13.75%) died due to recurrent disease.
Conclusion. A graded increase in survival was noted with increasing the degree of resection and postoperative adjuvant therapy in malignant pineal tumours whereas benign pineal lesions can be managed with surgery. Pure germinomas are the only tumour for which the survival rate was unrelated to extent of tumour resection.
Autologous versus synthetic cranioplasty
Authors: Zafar Arif , Strickland Samantha , Achawal Shailendra 
Published: September 2023

Background. Cranioplasty has been described in history as far back as the 16th century. The use of autologous cranioplasty has been published since 1821 and is still under practice today worldwide. Recent evidence however has suggested increased complication and revision rates with the use of autologous bone. We compared our results of autologous cranioplasty versus synthetic material.
Methods. A retrospective study was carried out of cranioplasty procedures at our unit between August 2009 and March 2018. Bone flaps were placed in a sterile sealed plastic container and stored at -81 degrees. Swabs and bone chips were used for cultures and bone flap disposed if positive. On re-implantation, the bone was thawed at room temperature and soaked in gentamicin. Synthetic cranioplasties were constructed using thin-slice CT to design a custom flap for each patient.
Results. 144 cranioplasties were studied. 51 own bone and 93 synthetic. The average delay in cranioplasty was 286 days (Range 16 – 1264 days). The overall complication rate for all 144 cranioplasties was 20.8%; Autologous 31.4% and synthetic 15.1%; p 0.031. Bone flap infection rate overall for all 144 cases was 9.7% - Autologous 11.8% and Synthetic 8.6%; p 0.565. The revision rate was found to be 13.2% overall; 23.5% for autologous and 7.5% for synthetic. The difference in revision rate was found to be statistically significant (p 0.01).
Conclusion. Revision rate and overall complication rate were higher in the own bone group with P<0.05. There was no difference in infection. Our results mirror recent publications and should be considered when undertaking a cranioplasty.
Adolphe Crémieux, l'Alliance Israélite Universelle et les Juifs de Roumanie au début du règne de Carol Hohenzollern Sigmaringen
Authors: Iancu Carol 
Published: September 2023

Dans une importante introduction sont présentées les lignes directrices qui ponctuèrent l'histoire des Juifs roumains entre 1848 et 1866. La situation de la communauté juive au début du règne de Carol Hohenzollern Sigmaringen est analysée à travers plusieurs lettres inédites et autographes, envoyées par Adolphe Crémieux, Léonce Lehmann, Eugène Manuel et Moses Montefiore à Emile Picot, secrétaire français du Prince.
Cette correspondance et son étude jettent une lumière nouvelle, d'une part sur la personnalité de celui qui le premier en France au XIXe siècle posa les jalons d'une solidarité juive agissante, et d'autre part sur l'attitude de l'Alliance et l'intérêt porté à la question par trois de ses éminents membres. Elle éclaire également la politique libérale de la France et met en relief le rôle d'Émile Picot. Grâce à Adolphe Crémieux et à l'Alliance israélite universelle qui prennent leur cause en mains, les Juifs roumains sortent de leur obscurité et entrent dans l'orbite du Judaïsme européen.
L'inventaire de la bibliothèque et du mobilier d'un médecin juif d'Aix-en-Provence au milieu du XVe siècle
Authors: Iancu Danièle 
Published: September 2023

Le document que nous présentons, extrait des minutes du notaire Jean de Urchis conservées aux Archives départementales des Bouches-du-Rhône, contient l'inventaire après décès des biens mobiliers d' Astruc de Sestiers, médecin juif aixois.
Ce sont surtout ses livres qui, par leur nombre (179 ouvrages) et leur diversité, composent une bibliothèque extrêmement fournie, la plus importante explicitée à ce jour. En effet, les 174 volumes que nous avons pu identifier portent autant sur les disciplines traditionnelles, la littérature talmudique et rabbinique, que sur la philosophie, les sciences (physique, mathématiques, astronomie) ou la médecine qui, elle, est abondamment représentée.
Un tel témoignage de culture et d'érudition, quelque cinquante années avant l'expulsion des Juifs, confirme ce que l'on savait déjà sur la Provence, foyer d'intense vie, d'effervescence et d'échanges intellectuels au Moyen Age.
Miroir des préoccupations spirituelles d'un médecin juif aixois au milieu du xve siècle (1439), ce document a en outre le mérite de nous le situer dans son environnement matériel (ses biens meubles nous sont détaillés) et dans ses relations quotidiennes avec le milieu extérieur (la liste de ses dettes et créances est fournie) ; il constitue une pièce de choix pour l'histoire des mentalités.
D'autres sources nous ont permis la reconstitution en Annexe d'une précieuse généalogie sur la famille d'Astruc de Sestiers.
RECONFIGURABLE RIS SMART SURFACES: PROSPECTS FOR NEXT-GENERATION ACCESS NETWORKS
Authors: Горчаков А.П. , Константинова А.А. , Пальцин Д.А. , Рыжков А.В. , Фень А.С. , Шалагинов А.В. , Шварц М.Л. 
Published: September 2023

Рассмотрена технология реконфигурируемых интеллектуальных поверхностей RIS (Reconfigurable Intelligent Surfaces) как одно из наиболее перспективных направлений развития сетей доступа нового поколения 5GA/6G. Показаны её преимущества и возможности практического применения RIS поверхностей.
This article discusses the technology of Reconfigurable Intelligent Surfaces (RIS) as one of the most promising areas for the development of new generation access networks 5GA/6G. The advantages and the possibilities of practical application of such surfaces are shown.
EVOLUTION OF TELECOMMUNICATION SYSTEMS FOR INDUSTRIAL COMMUNICATION
Authors: Ермаков А.В. 
Published: September 2023

Анализируются направления эволюции телекоммуникационных систем, используемых для организации производственной связи. Формулируются принципы создания и модернизации телекоммуникационной системы для высокотехнологичной компании. Такая система рассматривается как универсальная модель для долгосрочного развития производственной связи в целом. Предлагаются направления дальнейших исследований, увязанные с процессами эволюции сети связи общего пользования.
The directions of the evolution of telecommunication systems used for the organization of industrial communication are analyzed. The principles of creating and upgrading telecommunication system for hi-tech company are formulated. Such a system is viewed as a universal model for the long-term development of production communication in general. The directions of further research connected with the processes of evolution of public communication networks are suggested.
THE QUALITY IMPROVEMENT OF PUBLIC SERVICE AT THE KAMBITIN VILLAGE OFFICE BASED ON GENERAL PRINCIPLES OF GOOD GOVERNANCE IN ADMINISTRATIVE LAW
Authors: Valisa Cut 
Published: September 2023

ABSTRACT
In an effort to improve the quality of public services at the Kambitin Village office based on one the principles contained in the general principles of good governance (AAUPB) in state administration law, the village government, in this case the village apparatus, must also be able to realize the performance of public services in accordance with what is expected by the community. The purpose of this research is to identify and analyze the efforts of the village government in improving the quality of public services, along with identifying whether the Village Officials at the Kambitin Village Office have understood the importance of the general principles of good governance (AAUPB) in providing public services to village communities. Types and approaches using qualitative research are carried out by collecting words or sentences from individuals, books, and other sources. therefore, this qualitative research uses interview technique namely 5 (five) informants as a method of data collection. Data analysis techniques use interactive models (Miles & Huberman). The results of the study show that the performance of the village government in the delivery of public services has been carried out properly and is in accordance with the applicable laws and regulations. However, regarding the implementation of a community satisfaction survey for services at the Kambitin Village office, a community satisfaction survey has never been carried out either by village officials or from related survey agencies or institutions. The implications of this study indicate that efforts to improve the quality of public services have a very important role in order to achieve the goal of better service quality.
Vapor phase deposition of lead-free halide perovskite alloy CsSn1−x
Zn
x
Br3
Authors: Jung Hanbo , Liu Zihao , Sotome Masato , Kondo Takashi 
Published: September 2023

Abstract
We have investigated vapor phase deposition of lead-free all-inorganic perovskite CsSn1−x
Zn
x
Br3 thin films (x = 0, 0.01, 0.02, 0.04, 0.10, 0.20 and 1.00) by co-evaporation of CsBr, SnBr2, and ZnBr2. We found that zinc ions can be incorporated into the perovskite lattice by substitution of up to 4% tin ions. Incorporation of zinc ions narrowed the band gap and suppressed oxidation of Sn2+. The deposited CsSn1−x
Zn
x
Br3 polycrystalline thin films were of better quality compared to pure CsSnBr3, showing improved morphologies with fewer pinholes and larger grains. These properties of CsSn1−x
Zn
x
Br3 will lead to the realization of efficient and stable lead-free perovskite solar cells.
Epitaxial α-Ta (110) film on a-plane sapphire substrate for superconducting qubits on wafer scale
Authors: Zhou Boyi , Yang Lina , Wang Tao , Wang Yu , Ding Zengqian , Wu Yanfu , Xiong Kanglin , Feng Jiagui 
Published: September 2023

Abstract
Realization of practical superconducting quantum computing requires many qubits of long coherence time. Compared to the commonly used Ta deposited on c-plane sapphire, which occasionally form α-Ta (111) grains and β-tantalum grains, high quality Ta (110) film can grow epitaxial on a-plane sapphire because of the atomic relationships at the interface. Well-ordered α
-Ta (110) film on wafer-scale a-plane sapphire has been prepared. The film exhibits high residual resistance ratio. Transmon qubits fabricated using these film shows relaxation times exceeding 150 μs. The results suggest Ta film on a-plane sapphire is a promising choice for long coherence time qubit on wafer scale.
FPGA based Artificial Neural Network Processor for Detection of Epileptic Seizure
Authors: Balivada Yashwant Kumar , KUMAR ABHASH , Sameer Mustafa , ghosh sanchita , Gupta Bharat 
Published: September 2023

<p>The design of an FPGA based portable seizure detection system for epilepsy patients is presented in this paper. For complete hardware support, an FPGA based epilepsy detection system exploiting Artificial Neural Network (ANN) based classifier with on chip training and testing support have been presented in this paper. With the help of such Neural Network processor, the prevailing problems in software like latency can be overcome and, also one can proceed towards an ASIC design of such system which is in high demand in recent days in the field of neuromorphic computing. The proposed hardware design takes the epileptic seizure characteristics namely—mean, variance, skewness, and, kurtosis as the input vectors to the ANN model and generates the classification output similar to traditional software system but now with complete and isolated hardware support. The total framework which incorporates both training and testing has been designed using Verilog HDL on Xilinx Vivado software. The objective development board chosen for epileptic seizure detection implementation and testing was Xilinx Zedboard. The various seizure groups namely— (SZ, SO, SN, SF, S-ZO, S-NF, ZO-NF, S-ZONF) which are taken from 4 unique frequency based groups which are <em>Alpha</em>, <em>Beta</em>, <em>Delta</em>, <em>Theta</em> accomplishing an accuracy ranging from 70% to 90% for different models. Previously, hardware support had already been presented through software hardware co-design approach, where software based training were accompanied by hardware based testing on FPGA. But, the problem with this approach is that it needs repetitive tuning of weights on software to learn patterns on different datasets and then have to store it on hardware for testing/inference work. So, we troubleshooted this problem by our novel work where our proposed FPGA ANN architecture lessens this intricacy incredibly as hardware can train and test on FPGA itself without the need of external software assistance. </p>
Surface Susceptibility Synthesis of Spatially Dispersive Metasurfaces for Space Compression and Spatial Signal Processing
Authors: dugan jordan , Smy Tom J. , Monticone Francesco , Gupta Shulabh 
Published: September 2023

<p>An analytical method is proposed to synthesize the angle-dependent surface susceptibilities, χ of spatially dispersive or non-local zero-thickness metasurfaces. The proposed method is based on the extended Generalized Sheet Transition Conditions (GSTCs), whereby spatially dispersive metasurfaces are modeled using angle-dependent surface susceptibilities that take the form of rational polynomial functions of the transverse wave-vector, k∥. The suggested method derives the rational polynomial form of χ(k∥), which can then be expressed in the space-domain using spatial derivatives of the fields, resulting in a corresponding higher-order spatial boundary condition to achieve the desired field operation. The proposed synthesis method is illustrated using variety of examples such as, a space-plate, spatial filters and field absorbers, which are then validated using an Integral Equation (IE) solver, in which the corresponding higher-order boundary conditions are integrated to predict the scattered fields. The proposed method thus not only represents a simple way to synthesize ideal zero-thickness metasurfaces, but helps establishes a way to define fundamental operational limits of spatially dis- persive metasurfaces. This is illustrated by considering the space- plate example, and deriving the fundamental trade-off between operation bandwidth and the achievable space-compression. </p>
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Using Graph Neural Networks in Reinforcement Learning with application to Monte Carlo simulations in Power System Reliability Analysis
Authors: Solheim Øystein Rognes , Høverstad Boye Annfelt , Korpås Magnus 
Published: September 2023

<p>This paper presents a novel method for using Graph Neural Networks in combination with reinforcement learning for power reliability studies. Monte Carlo methods are the backbone of such probabilistic power system reliability analyses. Recent efforts from the authors have shown that it is possible to replace Optimal Power Flow solvers with the policies of deep reinforcement learning agents and obtain significant speedups of Monte Carlo simulations while retaining close to optimal accuracies. However, a limitation of this reinforcement learning approach is that the training of the agent is tightly connected to the specific case being analyzed, and the agent cannot be used as is in new, unseen cases. In this paper, we seek to overcome these issues. First, we represent the state and actions in the power reliability environment by features in a graph, where the adjacency matrix can vary from time step to time step. Second, we train the agent by applying a message passing graph neural network architecture to an integrated variant of an actor-critic algorithm. This implies that the agent can solve the problem independently of the power system grid structure. Third, we show that the agent can solve small extensions of a test case without having seen the new parts of the power system during training. In all of our reliability Monte Carlo simulations using this graph neural network agent, the simulation time is competitive with that based on optimal power flow, while still retaining close to optimal accuracy.<br>
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