Paleo-Asian Cultural Phenomena of Ancient Beringia: Population Convergence and Solution of Ethnic Self-Identification

Authors offer for a discussion the materials from studies of archaic culture elements that include body modifications in ethnic groups in the context of population genetic data from native peoples of the Far North. The authors consider materials from the territory of ancient Beringia which include a part of Chukotka and Kamchatka in Russia, Alaska in the USA and several island groups in between. The working hypothesis of the study involves the identification of common and specific features of body modifications in ethnic groups having similar population genesis. This allows to clarify the specifics of the regional contacts. Body modifications (tattoos, piercings, etc.) are considered as a way of a person’s self-identification and a form of his group membership (in this case—ethnic group). The study used ethnographic, archaeological, paleo-history, folklore materials and up-to-date data that include genetic research of contemporary ethnic groups inhabiting the territory of ancient Beringia and maintaining their traditional way of life. The methodology base of the research is based on formalized approach and cross-cultural analysis evidence of the similarity/difference of the population in combination with the method of comparative analysis of DNA data and information about their genetic structure.

Construction of a Comprehensive International Legal Protection Mechanism for Climate Refugees

Climate refugee has become an unavoidable major right crisis challenge for the international community. However, the corresponding development of positive international law is obviously imperfect. The basic rights of climate refugees cannot be fully guaranteed by international law. They are always facing problems such as unclear legal status lack of protection of basic rights, and imperfect relief mechanism. Those vulnerable groups who lack resources and migration abilities suffer more serious rights violations because they are forced to stay in place. Compared with the risk-management framework and right-protection framework, the comprehensive international legal protection mechanism is the inevitable choice for climate refugees’ rights relief in the post-2012 period. The rights of climate refugees set out in the preamble of the Paris Agreement in 2015, the New York Declaration on Refugees and Migrants in 2016, the Global Refugee Compact in 2018, and the Global Compact for Security, Order and Regular Migration formally incorporated the issues of refugees and migrants caused by climate change, laying the foundation for this choice. However, it is a long and difficult way to build a perfect comprehensive international response to climate change. It is not only necessary to realize the integration of human rights law and climate law at the conceptual level, but also to integrate the different perspectives of the two laws and build a set of scientific and reasonable cooperation mechanism.

Can Digital Village Construction Reduce Rural Income Disparity?—Empirical Analysis Based on Inter-provincial Panel Data in China

Cutting the income disparity within rural areas is one of the key priorities in seeking common prosperity in China. Based on the panel data of 20 provinces in China from 2011 to 2020, we empirically analyze the impact of digital village construction on rural income disparity by building a digital village construction level indicator system which represents three dimensions of digitalization in rural areas, i.e., digitalization of rural infrastructure, digitalization of agricultural development and digitalization of rural residents’ life. Overall, the level of digital village construction in rural China has shown a development trend of gradual improvement, while the development level in various regions is unbalanced and varies greatly. The results of the fixed-effect model show that, digital village construction can significantly reduce the income disparity in rural areas, whereas the effect is significant in eastern China, insignificant in central and western China. It is recommended to increase the investment in funds and talents and take full consideration and advantage of local conditions, while promoting the development of new rural digital economy, so to achieve the development goal of common prosperity of rural residents.

Australopithecine Taxonomy and Phylogeny and the Savanna Hypothesis; Comment on Vaneechoutte et al. Have We Been Barking up the Wrong Ancestral Tree? Australopithecines Are Probably Not Our Ancestors. Nat. Anthropol. 2023, 2, 10007

Biodegradable Composite Materials Based on Cassava Starch and Reinforced with Topinambur (Helianthus tuberosus) Aerial Part Fiber

The cultivation of topinambur (Helianthus tuberosus) has aroused the interest of producers since it is a source of inulin and can be used for biofuel production. During tuber processing, the aerial part of the crop remains as a by-product with no practical application. This work aimed to characterize the fibers obtained from the aerial part of topinambur and to evaluate their reinforcing potential in cassava starch-based films. Starch-based films with topinambur fiber (0, 5, and 10%) were prepared by extrusion followed by thermocompression. Topinambur residue contains 88.6% of total fiber, 8.5% ash, and 0.68% lipid. Mechanical film properties evidenced the reinforcement action of topinambur fiber, 10% content was able to increase up to 70% the Young’s modulus. SEM micrographs evidenced the good fiber-matrix interaction. UV-visible capacity, opacity, and chromaticity parameters of TPS films increased with fiber content in the formulation. Fiber incorporation improved the hydrophobicity of the biocomposite materials by increasing the contact angle. Starch-based films biodegraded more than 55% after 110 days, showing a similar trend to that of microcrystalline cellulose. Thus, topinambur residue can be effectively used as a reinforcing agent for TPS materials, being an innovative and non-toxic additive within the circular economy premises.

Thermogravimetric Study of the Oxidation Behavior of the Cantor’s Alloy at 1000 °C and Beyond

A polycrystalline Cantor alloy, equimolar in Co, Cr, Fe, Mn and Ni, was cast. It was subjected to oxidation in a thermo-balance in a flow of synthetic dry air, at 1000, 1050, 1100 and 1150 °C. The mass gain was globally parabolic but rather irregular. The parabolic constants, ranging from 55 to 700 × 10⁻¹²·g²·cm⁻⁴·s⁻¹, are much higher than for a chromia-forming alloy. They obey an Arrhenius law with an activation energy equal to 270 kJ/mol. The external oxide scales formed are composed of an outer part made of manganese oxide and an inner part made of (Cr, Mn) oxide containing a thin internal layer of chromia. The Mn and Cr-depleted depths and the Mn and Cr masses lost by the alloy increase with the oxidation temperature. Cr-rich acicular particles precipitated in subsurface at 1100 °C and internal oxidation along the grain boundaries are present in the whole thickness of the sample oxidized at 1150 °C. Oxide spallation occurred during the cooling, at temperatures in the 200–350 °C range, only for the alloys oxidized at 1050 and 1100 °C. Not too thick scale (1000 °C) or deep internal oxidation (1150 °C) may be favorable for scale adherence.

Human Mobility in the Central and Eastern Mediterranean during Hellenistic and Roman Times: The Potential and Limitations of Bioarchaeological Research

This paper offers a review of bioarchaeological research on human mobility during the Hellenistic and Roman period in the Central and Eastern Mediterranean. This period was marked by significant connectivity amidst the establishment of major political entities. The paper begins with an overview of bioarchaeological methods used to study past mobility, including biodistance, isotopic and ancient DNA analyses. It then examines published studies that have utilized these methods to explore mobility during the Hellenistic and Roman periods. The paper concludes by critically assessing the current research limitations and proposing directions for future studies. These suggestions emphasize the importance of conducting additional research to investigate human mobility in neglected areas, as well as at different temporal and spatial scales. Integrating mobility data with other sources of evidence, such as historical accounts, paleoenvironmental data and osteobiographic information is another important future direction of research. Finally, relevant research should be more theoretically informed and its contemporary implications should be effectively communicated within and beyond the academic community. An enhancement of our understanding of the nature and impact of mobility is crucial in today’s society, where misconceptions linking immigration to the decline of the Roman Empire can perpetuate biases against contemporary mobility. 

Anisotropic Superelastic and Shape Memory Effect of Nitinol Manufactured by Electron Beam Powder Bed Fusion

This study explores the impact of energy input and build orientation on the anisotropic mechanical and functional properties of Ti-rich Nitinol (NiTi) produced via electron beam powder bed fusion (PBF-EB), integrated with layerwise in-situ monitoring of the melted surface via backscatter electron detection (ELO). NiTi, a binary alloy of nickel and titanium, exhibits shape memory and superelasticity, making it widely used in biomedical applications and sustainable technologies. PBF-EB, particularly with ELO, is highlighted for its advantages in producing crack-free NiTi with tailored microstructures. The investigation reveals that energy input significantly influences microstructure phases, with higher energy promoting increased evaporation of Ni and enhancing Ti-rich Ti₂Ni precipitates, allowing for tailored material properties. Build orientation also proves crucial, impacting mechanical responses and functional properties. The 0° orientation yields the hardest mechanical response with the highest ultimate tensile strength (UTS) and the highest strain recovery ratio while the 45° orientation shows improved ductility but lower UTS. The influencing factors towards the formation of the anisotropic material properties are explained and the potential of tailoring the NiTi properties for specific applications by controlling energy input and build orientation in the PBF-EB process are underlined. These insights offer valuable criteria for designing innovative NiTi parts.

Mapping the (in)Effective Enforcement of EU Environmental Law in Greece: Lessons from the EU and Domestic Courts

The effective implementation and enforcement of EU environmental law at national level constitutes a thorny issue with both legal and practical aspects. Greece is among the EU Member States which has historically faced difficulties in complying with the EU environmental acquis due to the poor functioning of the Greek administration, the limited manpower, expertise and resources (especially during the recent period of the economic crisis) for the competent authorities, the lack of political will, the low awareness of environmental problems. In this context, this paper aspires to unpack these enforcement challenges at the national level based on the case law of both the Greek Council of State and the Court of Justice of the European Union. Considering that waste management, nature protection, and water and air quality sectors are recognized as areas with the most significant deficiencies in implementation at the domestic level, the analysis will focus on these four key sectors.  To this end, by reviewing the relevant EU and Greek jurisprudence, this paper aspires to identify the disparities between the formal requirements and the practical application of EU environmental regulations in Greece in light of the national political, economic, social, and cultural dynamics. 

Fighting Arts on Today’s Coins, Medals and Badges: Popularity or Uniqueness

Background. Medallic art is used to promote the subject matter which is important for the issuer. Also fighting arts and martial traditions are used here as icons in the coins and medals. Problem. What is the purpose of occasional coins, medals or badges relative to their contents or symbolism, the metal used or the volume of the release? Does an issuer aim at promotion or rather at recognition and at maintaining the uniqueness? Material and Method. The study uses a regression method, comparative analysis and literature review. Approximately one hundred examples are discussed. Statistical analyses took into account N = 64 of contemporary coins (47) and medals (17), representing the relevant thematic groups. Pearson C coefficient was calculated for the factor of popularity FA and a number of variables. Results. It has been found that medals are issued in small volumes and are significantly varied in terms of the subject matter (uniqueness and originality). Some organisations seek to ensure the exceptional status of medal-type award which is granted based on strictly defined rules. Conclusions. Presentations of martial arts on coins, medals and badges make reference to the related symbolism or to the issuer’s national traditions. Large volume releases are mainly done for promotional purposes. On the other hand medals issued in small numbers are meant to be unique—they find their way to a select group of people deserving special recognition.