bluuebunny/crossref_metadata_2025_split huggingface dataset:
Novità su un particolare schema iconografico dell’orientalizzante etrusco
Authors: Valente Noemi 
Published: July 2022

In questo lavoro verrà preso in considerazione un particolare schema iconografico riconoscibile su un piccolo numero di materiali etruschi databili al VII secolo a.C.A rendere particolarmente rilevante questo schema è la diffusione geografica che esso presenta con due differenti poli, uno padano e uno meridionale, strettamente vulcente. Ciò appare rilevante soprattutto considerando quanto è stato osservato in passato a proposito dei contatti tra Vulci e l’Etruria padana dal punto di vista epigrafico.

A particular iconographic scheme can be identified on a small number of Etruscan objects datable to the 7th century BCE. What makes this scheme particularly relevant is its diffusion between two geographical poles: the Po Valley and South Etruria, particularly at Vulci. These objects are important indicators of a pattern of contacts similar to that previously observed between Vulci, North Etruria, and the Po Valley from an epigraphic point of view.
Comparison of two different software programs for three-dimensional analysis of carotid atherosclerosis: A retrospective CBCT study
Authors: KOÇ Nagihan 
Published: July 2022

Aim: The present study aimed to compare two different CBCT software packages, Mimics Medical and 3D-DOCTOR, in performing the volume and areal measurements of extra-cranial carotid artery calcifications (ECACs).
Material and Methods: A total of 44 scans were evaluated. The calcifications were categorized as unilateral or bilateral. Volumetric and areal measurements of ECACs were done with the two software programs. Intraclass correlation coefficient (ICC) was used to evaluate the intra-observer reliability. The difference in measurements between two software groups was evaluated with the t-test.
Results: The ECACs were unilateral in 24 cases and bilateral in 20 cases. There were 25 females and 19 males and the mean age of the sample was 63.31 ± 10.21 years. The overall mean volume obtained with Mimics software was 52.97 ± 48.97 mm3 while that obtained with 3D-DOCTOR software was 39.70 ± 34.40 mm3 (P=0.001). Similarly, significant differences between Mimics (109.55 ± 85.40 mm2) and 3D-DOCTOR (98.99 ± 75.34 mm2) software programs were observed for areal measurements (P=0.001).
Conclusion: Although high agreement rates were observed in repeated measurements among two software programs, volumetric and areal measures of the ECACs obtained with Mimics Medical were higher than those obtained with 3D-DOCTOR.
Klimaatverandering: ecologisch burgerschap
Authors: Tonkens Evelien , Hurenkamp Menno 
Published: July 2022

De blinde vlek
The most relevant part of a discussion is not what is discussed but what cannot be spoken of. The real taboos are those for which it is taboo to call them taboos. The status quo defines itself as non-ideological while denouncing any challenge to itself as radical. Therefore the column ‘De blinde vlek’ frames the framers, politicizes the status quo and articulates what is not heard of.
De opkomst van cryptoactiva in de voetbal- en sportwereld
Authors: Beenen Thom , van den Bosch Wouter 
Published: July 2022

De opkomst van cryptoactiva in de voetbal- en sportwereld. Een analyse van het financieel-rechtelijke speelveld?
In dit artikel gaan de auteurs in op de mogelijkheden die de uitgifte van cryptoactiva sportclubs kan bieden. Daarbij wordt een onderscheid gemaakt tussen uitgifte van twee soorten tokens: Fan Tokens en NFT’s. Voor beide soorten tokens worden de kenmerken, het huidige en het toekomstige financieel-rechtelijke kader besproken.
The Outsourcing Theory: Approach, Decision and Corporate Social Responsibility
Authors: Soriano-Sandoval José Luis , Alarcón-Sánchez Karla María 
Published: July 2022

Purpose. The purpose of the research is to present, from the management field, an updated approach to Outsourcing theory and how this theory converges with sustainable approaches to corporate social responsibility, such as the Triple Button Line and the Stakeholders theory. The foregoing allows us to propose an updated and more up-to-date theoretical model, attached to the guidelines of the Oslo Manual and the objectives of sustainable development.
Methodology. The document was prepared through a review of specialized literature on outsourcing theory and theories related to sustainable development. Generating a theoretical discussion, providing a new updated and complete theoretical model regarding outsourcing.
Findings. The document allows to propose a new theoretical model that, in turn, helps managers in making decisions regarding the use of outsourcing and reduce uncertainty, regarding the appropriate and/or feasible scenarios for the acquisition of service.
Originality. The current literature document related to the theory of outsourcing and incorporates it with theories of sustainability and the environment, generating a broad and practical theoretical framework for managers and/or decision makers in the company.
Conclusions and limitations. The outsourcing theory must incorporate issues related to sustainability, such as Corporate Social Responsibility, and direct it to practical application in decision-making related to the service. The document is limited to theoretical issues, inviting to continue with its empirical validation in future investigations.
Being There. If the Pairing of the Birdwatchers Affects the Pairing of the Birds
Authors: Uskoković Evangelina , Uskoković Theo , Uskokovic Vuk 
Published: July 2022

The drives of inter-individual relationships within avian social groups are largely unexplored and relatively poorly understood, including how social landscapes affect the decisions of individuals within these groups. On a modest level, this study undertakes to expand this knowledge with an ornithological observation of temporary groupings among multiple aquatic species in response to the pairing of birdwatchers. More ambitiously, the study presumes the analogy between the social response of an avian community and the subliminal response of the human psyche to spatial stimuli. The number of bird pairs forming in flocks, coverts and rafts was consistently higher when the birds interacted with children teamed up in pairs than when solitary children interacted with the birds. Inadvertent social cues consequential to the extended duration of the focus, vigilance stimulation and subliminal messages affecting the neurological pathways in the brain and the social dynamics pertaining to proxemics are discussed as potential causes of this effect. Lastly, the structure of the paper mimics the lifetime of inventive ideas, which originate from a chaos of amorphous thought, then crystallize into a clarity of logical concepts open to elaboration, and eventually disperse into a similar semantic clutter as that from which they were born.
Path Loss Prediction Model for Propagating Radio Wave in Woodland
Authors: Adegoke A. S. , Okpeki U. K. , Green O. 
Published: July 2022

This paper presents new empirical prediction models for loss estimation in forest environment. Experimental investigations were carried out on groups of trees in form of woodland and lines of trees at SHF band under different operational contexts. In the experimentations, two major measurement geometries (propagation “into” and propagation “inside” forest) were adopted on site to site basis. Results from all the sites displayed a common trend, in that they all showed a persistent decay in signal power with the depth of vegetation and which is dependent on the measurement geometries.
Using a “Power Law” theory, a new empirical loss prediction model has been proposed for each propagation scenario using parametric equations which are in line with the general formulations of the ITU-R models. These new models were tested with the standard empirical loss prediction models and gave a statistical adherence with the fitted ITU-R model.
It is anticipated that these new models will address the inadequacy in the existing prediction models which have not taken cognizance of the differences in operational contexts of each propagation scenario in their formulations.
TVET Institutions and Industry Collaborative Practices on Electronics Laboratory Training for Skill Acquisition among Technician Trainees in Kenya
Authors: Stella Okemwa K, , Ahmed Ferej , Simon Wanami 
Published: July 2022

Aims: To establish if there exist any Technical and Vocational Education and Training (TVET)-industry collaborative practices to aid electronics laboratory training in TVET institutions in Nairobi County, Kenya.
Study Design: Qualitative research design.
Place and Duration of Study: Electrical and Electronics Departments of public Technical and Vocational Education and Training institutions in Nairobi County Kenya, between September 2019 and March 2020.
Methodology: Qualitative phenomenological research design was employed. The target population comprised of eight (8) Head of Departments (HODs) and eight (8) electronics experts drawn from electrical and electronics departments in the 8 public TVET institutions in Nairobi County. All HODs were selected for an interview while purposive sampling was used to select experts for a focus group discussion. An interview schedule and a focus group discussion guide were developed and administered face to face. Qualitative data obtained was analyzed using thematic analysis.
Results: Sample sizes for Focus Group Discussion (FGD)and HODs was 8 each. The response rate was 100% and 75% respectively. The findings of study revealed that TVET institutions were aware of the skills needed in the industry although the institutions did not have collaboration with the industry. The institutions had tried to incorporate industry skills in laboratory practice on their own without input from the industry.
Conclusion: It was concluded that TVET institutions had little interest in seeking out collaborations with the industry. It was therefore recommended that TVET institutions should develop collaborations with specific industries for purposes of supporting laboratory instruction.
Scavenging Tumor‐Derived Small Extracellular Vesicles by Functionalized 2D Materials to Inhibit Tumor Regrowth and Metastasis Following Radiotherapy
Authors: Tu Zhaoxu , Zhu Yuefei , Xiao Yongqiang , Chen Jie , Shannon Sydney , Zhang Fan , Li Zhengwei , Zhou Jie , Hu Hanze , Ho Tzu‐Chieh , Gao Wenlong , Shao Dan , Leong Kam W. 
Published: July 2022

AbstractRadiotherapy is essential for treating unresectable or metastatic breast cancer, but radiotherapy‐induced tumor cell death generates small extracellular vesicles (sEVs) that promote tumor regrowth and metastasis following treatment. Here cationic nanosheets with a high sEVs‐binding capacity that suppress sEVs‐induced tumor regrowth and metastasis following radiotherapy is developed. Molybdenum disulfide (MoS2) monolayers are prepared by using lithium ions as intercalation agents, and are functionalized with cationic polyamidoamine (PAMAM) dendrimers. The MoS2‐PAMAM particles exhibit a corrugated sheet‐like nanostructure with a larger surface‐to‐volume ratio than spherical PAMAM‐functionalized particles, resulting in greater sEVs binding capacity. Treatment of MDA‐MB‐231 human breast cancer cells with the MoS2‐PAMAM nanosheets reduces sEVs‐induced Toll‐like receptor activation and tumor cell proliferation, migration, and invasion to a greater extent than treatment with spherical PAMAM nanoparticles. In a mouse 4T1 metastatic breast cancer model, the nanosheets exhibit greater inhibition of tumor regrowth and metastasis after radiotherapy than the spherical nanoparticles, demonstrating the potential of these sEVs‐scavenging nanosheets for improving outcomes for breast cancer radiotherapy patients. The work reveals a pivotal role of the 2D sheet‐like materials in binding sEVs, indicating the significance of nanoscale geometry in developing the next‐generation sEVs‐scavenging biomaterials.
Vacancy‐Rich MXene‐Immobilized Ni Single Atoms as a High‐Performance Electrocatalyst for the Hydrazine Oxidation Reaction
Authors: Zhou Shiqi , Zhao Yunxuan , Shi Run , Wang Yucheng , Ashok Anumol , Héraly Frédéric , Zhang Tierui , Yuan Jiayin 
Published: July 2022

AbstractSingle‐atom catalysts (SACs), on account of their outstanding catalytic potential, are currently emerging as high‐performance materials in the field of heterogeneous catalysis. Constructing a strong interaction between the single atom and its supporting matrix plays a pivotal role. Herein, Ti3C2Tx‐MXene‐supported Ni SACs are reported by using a self‐reduction strategy via the assistance of rich Ti vacancies on the Ti3C2Tx MXene surface, which act as the trap and anchor sites for individual Ni atoms. The constructed Ni SACs supported by the Ti3C2Tx MXene (Ni SACs/Ti3C2Tx ) show an ultralow onset potential of −0.03 V (vs reversible hydrogen electrode (RHE)) and an exceptional operational stability toward the hydrazine oxidation reaction (HzOR). Density functional theory calculations suggest a strong coupling of the Ni single atoms and their surrounding C atoms, which optimizes the electronic density of states, increasing the adsorption energy and decreasing the reaction activation energy, thus boosting the electrochemical activity. The results presented here will encourage a wider pursuit of 2D‐materials‐supported SACs designed by a vacancy‐trapping strategy.
A New Polymer Donor Enables Binary All‐Polymer Organic Photovoltaic Cells with 18% Efficiency and Excellent Mechanical Robustness
Authors: Wang Jingwen , Cui Yong , Xu Ye , Xian Kaihu , Bi Pengqing , Chen Zhihao , Zhou Kangkang , Ma Lijiao , Zhang Tao , Yang Yi , Zu Yunfei , Yao Huifeng , Hao Xiaotao , Ye Long , Hou Jianhui 
Published: July 2022

AbstractThe development of polymerized small‐molecule acceptors has boosted the power conversion efficiencies (PCEs) of all‐polymer organic photovoltaic (OPV) cells to 17%. However, the polymer donors suitable for all‐polymer OPV cells are still lacking, restricting the further improvement of their PCEs. Herein, a new polymer donor named PQM‐Cl is designed and its photovoltaic performance is explored. The negative electrostatic potential and low average local ionization energy distribution of the PQM‐Cl surface enable efficient charge generation and transfer process. When blending with a well‐used polymer acceptor, PY‐IT, the PQM‐Cl‐based devices deliver an impressive PCE of 18.0% with a superior fill factor of 80.7%, both of which are the highest values for all‐polymer OPV cells. The relevant measurements demonstrate that PQM‐Cl‐based films possess excellent mechanical and flexible properties. As such, PQM‐Cl‐based flexible photovoltaic cells are fabricated and an excellent PCE of 16.5% with high mechanical stability is displayed. These results demonstrate that PQM‐Cl is a potential candidate for all‐polymer OPV cells and provide insights into the design of polymer donors for high‐efficient all‐polymer OPV cells.
Photolithographic High‐Conductivity Transparent Conformal rGO/PEDOT:PSS Electrodes for Flexible Skin‐Like All Solution‐Processed Organic Transistors
Authors: Wang Xue , Zhao Pengfei , Tong Yanhong , Guo Shanlei , Zhao Guodong , Zhang Mingxin , Yu Hongyan , Zhao Xiaoli , Tang Qingxin , Liu Yichun 
Published: July 2022

AbstractReduced graphene oxide (rGO) electrodes are known to exhibit high transparency, excellent chemical stability, low‐cost solution processability, and good compatibility for use in solution‐processed organic transistors, but they face fundamental challenges in conductivity and conformability for skin‐like electronics. Here, by inserting a poly(3,4‐ethylenedioxythiophene):poly‐(styrenesulfonate) (PEDOT:PSS) layer, the photolithographic conformal rGO/PEDOT:PSS electrodes with conductivity as high as 2000 S cm−1 can be achieved. Simultaneously, the rGO/PEDOT:PSS hybrid electrodes exhibit high precision down to 1 µm, high transparency of >90% over the visible spectra (400–700 nm), and imperceptible adherence onto damselfly wing without affecting flying. The resulting all‐solution processed organic transistor array presents the enhanced modulation effect of the gate voltage on current, 5.5‐fold increased mobility, and the on‐state current increased by one order of magnitude compared with the neat rGO electrode device, and shows the good adherence to deforming human skins and stable operation on the 10 mm spherical surface with mobility as high as 2.33 cm2 V−1 s−1. The strategy provides a high‐precision, high‐integration, flexible pattern‐designable, and scalable route to produce the high‐conductive transparent conformal rGO/PEDOT:PSS hybrid electrodes for flexible skin‐like all solution‐processed organic transistor array, showing the outstanding potential for future low‐cost soft electronics.
Parameter Conjugate Gradient with Secant Equation Based Elman Neural Network and its Convergence Analysis
Authors: Fan Qinwei , Zhang Zhiwen , Huang Xiaodi 
Published: July 2022

AbstractElman neural network (ENN) is one of the local recursive networks with a feedback mechanism. The parameter conjugate gradient method is a promising alternative to the gradient descent method, due to its faster convergence speed that results from searching for the conjugate descent direction with an adaptive step size (obtained by Wolfe conditions). However, there are still some challenges such as how to avoid the sawtooth phenomenon in gradient algorithms to improve the learning accuracy of the second‐order curvature of an objective function. As such, this paper presents a novel parametric conjugate gradient method that is based on the secant equation for training ENN in an effective way. Strict proof of the theoretical convergence of the proposed algorithm is provided in detail. In particular, the weak convergence and strong convergence of the algorithm, as well as the monotonicity of the error function are proved. Except for the theoretical analysis, the three numerical experiments have been conducted by applying the algorithm to three problems of classification, regression, and function approximation on nine real‐world datasets. The experimental results have demonstrated the feasibility of the proposed algorithm and the correctness of this theoretical analysis.
Colorful Conductive Threads for Wearable Electronics: Transparent Cu–Ag Nanonets
Authors: Tang Yan , Guo Bin , Cruz Mutya A. , Chen Han , Zhou Qicheng , Lin Zefeng , Xu Fuchun , Xu Feiya , Chen Xiaohong , Cai Duanjun , Wiley Benjamin J. , Kang Junyong 
Published: July 2022

AbstractElectronic textiles have been regarded as the basic building blocks for constructing a new generation of wearable electronics. However, the electronization of textiles often changes their original properties such as color, softness, glossiness, or flexibility. Here a rapid room‐temperature fabrication method toward conductive colorful threads and fabrics with Ag‐coated Cu (Cu‐Ag) nanonets is demonstrated. Cu–Ag core–shell nanowires are produced through a one‐pot synthesis followed by electroless deposition. According to the balance of draining and entraining forces, a fast dip‐withdraw process in a volatile solution is developed to tightly wrap Cu–Ag nanonets onto the fibers of thread. The modified threads are not only conductive, but they also retain their original features with enhanced mechanical stability and dry‐wash durability. Furthermore, various e‐textile devices are fabricated such as a fabric heater, touch screen gloves, a wearable real‐time temperature sensor, and warm fabrics against infrared thermal dissipation. These high quality and colorful conductive textiles will provide powerful materials for promoting next‐generation applications in wearable electronics.
Phonon‐Suppressing Intermolecular Adhesives: Catechol‐Based Broadband Organic THz Generators
Authors: Yoon Ga‐Eun , Seok Jin‐Hong , Puc Uros , Shin Bong‐Rim , Yoon Woojin , Yun Hoseop , Kim Dongwook , Yu In Cheol , Rotermund Fabian , Jazbinsek Mojca , Kwon O‐Pil 
Published: July 2022

AbstractSolid‐state molecular phonons play a crucial role in the performance of diverse photonic and optoelectronic devices. In this work, new organic terahertz (THz) generators based on a catechol group that acts as a phonon suppressing intermolecular adhesive are developed. The catechol group is widely used in mussel‐inspired mechanical adhesive chemistry. Newly designed organic electro‐optic crystals consist of catechol‐based nonlinear optical 4‐(3,4‐dihydroxystyryl)‐1‐methylpyridinium (DHP) cations and 4‐(trifluoromethyl)benzenesulfonate anions (TFS), which both have multiple interionic interaction capability. Interestingly, compared to benchmark organic crystals for THz generators, DHP‐TFS crystals concomitantly achieve top level values of the lowest void volume and the highest crystal density, resulting in an exceptionally small amplitude of solid‐state molecular phonons. Simultaneously achieving small molecular phonon amplitude, large optical nonlinearity and good phase matching at infrared optical pump wavelengths, DHP‐TFS crystals are capable of generating broadband THz waves of up to 16 THz with high optical‐to‐THz conversion efficiency; one order of magnitude higher than commercial inorganic THz generators.
Introducing Spontaneously Phase‐Separated Heterogeneous Interfaces Enables Low Power Consumption and High Reliability for Phase Change Memory
Authors: Zeng Yuntao , Li Han , Zhu Yunlai , Cheng Xiaomin , Xu Ming , Tong Hao , Miao Xiangshui 
Published: July 2022

AbstractPhase‐change memory is one of the most promising candidates for the next generation nonvolatile memory, but their high power consumption and low reliability remain bottleneck problems that limit the data storage density and its storage‐class memory application. Here, an innovative phase change material with embedded self‐precipitated interfaces, where the nanoscale grains of phase change material are cut into interconnecting “crystal islands” by thermally stable self‐precipitated material with low thermal conductivity, is proposed. The precipitated material provides both thermal and atomic migration confinements in three dimensions. The thermal confinement enables low power consumption, and the atomic migration confinement enables high device reliability. The devices based on spontaneously phase‐separated O‐doped Sb2Te3 verify the material design, where Sb oxide acts as the precipitated heterogeneous phase and Sb–Te alloy as the phase change material. O‐doped Sb2Te3 device with 250 nm hole diameter shows an ultralow power consumption, down to a few hundreds of femtojoule, which is comparable with those of phase change nanowires. Besides, good thermal stability and low resistivity drift (drift coefficient 0.005) as well as excellent cycle endurance up to 108 times are also obtained at the same time. The doping fabrication process is quite compatible with current semiconductor industry.