Transition Area Research Articles

Do dotted extensions help guide drivers at a transition area of partial-shadowed left-turn lane? An investigation based on eye movement behavior and visual attention

When adding an exclusive left-turn lane at an intersection, a transition area is needed to allow through and left-turn traffic to move into appropriate lanes smoothly. However, whether a dotted extension should be applied at such a transition area remains inconclusive. The need for recommending a dotted extension is further complicated at intersections where an approach taper partially shadows a left-turn lane. This study aims to shed light on whether dotted extensions should be recommended in a transition area and research the impacts of dotted extensions on guiding drivers from their perspectives. Scenarios with and without dotted extensions were created for a video-viewing experiment. Driver eye movement behavior and cognitive load rating served as evaluation indicators in each target scenario. Thirty participants were recruited and randomly assigned to with and without dotted extension groups. Results show that: (1) With the dotted extension, participants could focus on fewer objects and, therefore, would not need to divert their visual attention toward the surrounding vehicles. (2) The dotted extension assists through-traffic drivers in maintaining more focused attention on information critical to their driving task. (3) Dotted extensions help drivers reduce stress, mainly because of clearer indications of lane configuration. Altogether, our findings suggest that a road with dotted extensions provides better guidance in a transition area than one without dotted extensions.

Mengenal Kebudayaan Suku Bugis

Bugis tribal culture is a very complex reality in the lives of Indonesian people. The Bugis tribe, as part of the Deutero Malay group, came to the archipelago after the first wave of migration from mainland Asia, especially Yunan. The name "Bugis" comes from "To Ugi," which refers to the Bugis people. La Sattumpugi, the first king of the Chinese Kingdom in Pammana, Wajo Regency, played a key role in Bugis history. The epic story "La Galigo," the world's greatest literary work, depicts the life journey of Sawerigading, We Cudai's husband, and creates the cultural foundation of the Bugis people. The Bugis community formed several classical kingdoms, such as Luwu, Bone, Wajo, Soppeng, Suppa, Sawitto, Sidenreng, and Rappang. However, the Bugis tribe has a marriage relationship with the Makassar and Mandar tribes. Currently, Bugis people are spread across various districts, creating a transitional area between Bugis and Makassar and Mandar. The Luwu Kingdom is considered to be one of the oldest kingdoms along with Cina, Mario, and Siang. History in the Bone region records seven generations of chaos, which was overcome by the To Manurung figure, known as Manurungnge ri Matajang, who was appointed Arumpone and formed the legislative council "ade pitue."

Harvestmen (Arachnida: Opiliones) from the Atlantic Forest-Cerrado transition zone of Luminárias, southern Minas Gerais state, Brazil

The Cerrado and Atlantic Forest biomes are global biodiversity hotspots. However, these environments still face large knowledge gaps concerning fauna inventory studies, such as those on harvestmen. Our study aimed to sample harvestmen species in a transition area between the Atlantic Forest and Cerrado, contributing to future biodiversity assessments and conservation efforts in Brazil. The surveys were conducted in the municipality of Luminárias, southern Minas Gerais state, between May 2023 and March 2024. We collected 185 individuals from six species and three morphospecies with a wide geographical distribution, but whose conservation status has not been assessed, which may affect their protection. Additionally, loss of native vegetation may lead to reductions in their populations. Our study supports current literature, which suggests the need for more inventories and the creation of a Conservation Unit in the Luminárias region.

An Intervention to Support Newly Admitted Students’ Transition to Pharmacy School

To provide pre-matriculation intervention in areas of basic need to newly admitted Doctor of Pharmacy students and to determine post-intervention changes made by students in the transition areas. Six transition areas were identified as basic needs that should be addressed by students prior to matriculation that are related to their potential for academic success. These areas included: housing, commute, non-school responsibilities and commitments (e.g., childcare, excessive extracurricular activities), work, finances, and study approach. A pre-matriculation survey was administered to 24 students enrolling in January 2024. Based on survey responses, members of the College's transition team contacted students to intervene in one or more of the six transition areas when plans had not been made or when plans were seen as a potential barrier to academic success. A post-matriculation survey was administered during New Student Orientation to identify changes students made based on interventions. Twenty-four students (100%) completed the pre- and post-surveys. Based on pre-survey data, 14 students were contacted (seven video conferences, seven email exchanges). Interventions made included: work (36.8%), study approach (31.6%), finances (15.8%), non-school related responsibilities (10.5%), and housing (5.3%). Students made a total of 54 changes in the transition areas. Thirty-three (61.1%) of the changes were made by students who received intervention, and 21 (38.9%) were made by students who had not been contacted for intervention. Pre-matriculation intervention for students in areas of basic need is one way to assist them in the transition to pharmacy school and proactively address academic success.

Odonata Community in a transition area between Atlantic Forest and Cerrado, Southern Minas Gerais, Brazil

Odonata Community in a transition area between Atlantic Forest and Cerrado, Southern Minas Gerais, Brazil

Nickel‐Catalyzed Reductive Protocol to Access Silacyclobutanes with Unprecedented Functional Group Tolerance

AbstractWhile significant progress has been made in the area of transition metal‐catalyzed ring‐opening and formal cycloaddition reactions of 1,1‐disubstituted silacyclobutanes (SCBs), synthesizing these SCBs—particularly those bearing additional functional groups—continues to present synthetic challenges. In this context, we present a novel Ni‐catalyzed reductive coupling reaction that combines 1‐chloro‐substituted silacyclobutanes with aryl or vinyl halides and pseudohalides, thereby obviating the need for organometallic reagents. This method facilitates the generation of 1,1‐disubstituted silacyclobutanes with a remarkable tolerance for various functional groups. This approach serves as a complementary and more step‐economical alternative to the commonly used yet moisture‐ and air‐sensitive nucleophilic substitution reactions involving Grignard or lithium reagents. Our initial mechanistic studies indicate that this reaction is initiated by oxidative cleavage of the Si−Cl bond in 1‐chlorosilacyclobutanes, which represents a distinct mechanism from the previously documented reductive coupling processes involving carbon electrophiles and chlorosilanes.

An Indoor-Outdoor Layered HD Map Construction for Unmanned Ground Vehicles

Abstract. High-Definition Maps (HD Maps) are lane-level 3-dimensional road network models that ensure the safe operation of autonomous vehicles and drive the continuous advancement of autonomous driving technology to higher levels. However, HD Maps currently face challenges regarding limited coverage and description of indoor environments (e.g. underground parking), as well as the lack of uniformity between indoor and outdoor map formats. Therefore, this paper proposes a Layered HD Map model for both indoor and outdoor environments. The map model consists of 6 layers, allowing effective representation of indoor and outdoor environments, as well as transitional areas. The paper also establishes an Unmanned Ground Vehicle (UGV) to collect and update map data using LiDAR (Light Detection and Ranging) SLAM (Simultaneous Localization and Mapping) and autonomous exploration technology, aiming to enhance the efficiency and automation of HD Map acquisition. In order to verify the validity of the proposed map model, this paper conducted a navigation experiment in a double decker parking lot containing entrances and exits. The results of the experiments demonstrate that the Layered HD Map generated through autonomous LiDAR SLAM can effectively describe the indoor and outdoor environments, and enable successful navigation of UGVs.

A Comprehensive and Repeatable Contrast-Enhanced Ultrasound Quantification Approach for Clinical Evaluations of Tumor Blood Flow.

The aim of this study is to define a comprehensive and repeatable contrast-enhanced ultrasound (CEUS) imaging protocol and analysis method to quantitatively assess lesional blood flow. Easily repeatable CEUS evaluations are essential for longitudinal treatment monitoring. The quantification method described here aims to provide a structure for future clinical studies. This retrospective analysis study included liver CEUS studies in 80 patients, 40 of which contained lesions (primarily hepatocellular carcinoma, n = 28). Each patient was given at least 2 injections of a microbubble contrast agent, and 60-second continuous loops were acquired for each injection to enable evaluation of repeatability. For each bolus injection, 1.2 mL of contrast was delivered, whereas continuous, stationary scanning was performed. Automated respiratory gating and motion compensation algorithms dealt with breathing motion. Similar in size regions of interest were drawn around the lesion and liver parenchyma, and time-intensity curves (TICs) with linearized image data were generated. Four bolus transit parameters, rise time (RT), mean transit time (MTT), peak intensity (PI), and area under the curve (AUC), were extracted either directly from the actual TIC data or from a lognormal distribution curve fitted to the TIC. Interinjection repeatability for each parameter was evaluated with coefficient of variation. A 95% confidence interval was calculated for all fitted lognormal distribution curve coefficient of determination (R2) values, which serves as a data quality metric. One-sample t tests were performed between values obtained from injection pairs and between the fitted lognormal distribution curve and direct extraction from the TIC calculation methods to establish there were no significant differences between injections and measurement precision, respectively. Average interinjection coefficient of variation with both the fitted curve and direct calculation of RT and MTT was less than 21%, whereas PI and AUC were less than 40% for lesion and parenchyma regions of interest. The 95% confidence interval for the R2 value of all fitted lognormal curves was [0.95, 0.96]. The 1-sample t test for interinjection value difference showed no significant differences, indicating there was no relationship between the order of the repeated bolus injections and the resulting parameters. The 1-sample t test between the values from the fitted lognormal distribution curve and the direct extraction from the TIC calculation found no statistically significant differences (α = 0.05) for all perfusion-related parameters except lesion and parenchyma PI and lesion MTT. The scanning protocol and analysis method outlined and validated in this study provide easily repeatable quantitative evaluations of lesional blood flow with bolus transit parameters in CEUS data that were not available before. With vital features such as probe stabilization ideally performed with an articulated arm and an automated respiratory gating algorithm, we were able to achieve interinjection repeatability of blood flow parameters that are comparable or surpass levels currently established for clinical 2D CEUS scans. Similar values and interinjection repeatability were achieved between calculations from a fitted curve or directly from the data. This demonstrated not only the strength of the protocol to generate TICs with minimal noise, but also suggests that curve fitting might be avoided for a more standardized approach. Utilizing the imaging protocol and analysis method defined in this study, we aim for this methodology to potentially assist clinicians to assess true perfusion changes for treatment monitoring with CEUS in longitudinal studies.

Subsegmentation of the hippocampus in subgroups of migraine with aura patients: advanced structural neuroimaging study

BackgroundThis study investigated for a possible contributing role of hippocampus in the different clinical phenotypic manifestations of migraine aura.MethodsHerein, patients were categorized as those with pure visual aura (MwAv), those who reported additional somatosensory and dysphasic symptoms (MwAvsd), and healthy controls (HCs). Neuroimaging data obtained using FreeSurfer-based segmentation of hippocampal subfields were compared between HCs and patients with migraine with aura, as well as between HCs and those with MwAv and MwAvsd. The average migraine aura complexity score (MACS) was calculated for each patient to investigate the correlation between hippocampal subfield volume and migraine aura complexity.ResultsHerein, 46 patients with migraine with aura (28 MwAvsd and 18 MwAv) and 31 HCs were included. There were no significant differences in the hippocampal subfields between HCs and patients with migraine with aura. The average MACS negatively correlated with the volumes of the left and right hippocampi, Cornu Ammonis (CA) 1, CA3, CA4, molecular layer, left granule cell layer of the dentate gyrus, hippocampal fissure, and hippocampus-amygdala transition area. The MwAvsd subgroup had significantly smaller whole hippocampal volumes in both hemispheres, as well as in both subicula, compared with the MwAv subgroup and HCs. In addition, the left molecular layer, right CA1, and hippocampal fissures were significantly smaller in the MwAvsd group than in the MwAv subgroup and HCs.ConclusionsSmaller left and right hippocampal volumes, particularly of the subiculum/CA1 area, may play an important role in the pathophysiology of somatosensory and dysphasic symptoms in migraine with aura.

Effect of structural parameters on the opening ratio of the atmospheric cutterhead

During excavation, the mud discharge performance is largely related to the opening ratio of the cutterhead. Based on the symmetrical characteristics of the atmospheric cutterhead body, this paper proposes a parametric method where the mapping relationship between the opening ratio and the structural parameters is established. The variation ranges of the key structural parameters were determined based on the cutter installation size, cutter arrangement, and the geometric relationship with the cutterhead. Moreover, the coupling relationship between the structural parameters and its influence on the opening ratio were investigated. Finally, the distribution of soil under different opening ratios was discussed by using the full-scale mud discharge numerical model. The result shows that the larger the opening ratio, especially the opening ratio of the transition area, the better the mud discharge performance of the cutterhead. Suggestions for adjusting the structural parameters during the design of the cutterhead opening were given based on the research results and findings.

A simple method for insulating sidewalls of the cathode tool to enhance precision in ECDM

Conventional micro-turning of metal materials with low rigidity and hardness is highly challenging. Electrochemical Discharge Machining (ECDM) offers an alternative approach for fabricating micro shafts. However, micro-turning by ECDM often leads to severe flaring at the shaft shoulder due to stray corrosion. To mitigate this issue, we propose two novel methods for insulating the sidewalls of the cathode tool: applying insulating tape to the sides of a rectangular cathode tool or attaching aluminum foil along the bottom edge of a rectangular acrylic plate. We evaluated the machining performance of these cathode tools on the 3 mm diameter copper rods. Experimental results demonstrate that using an acrylic plate with attached aluminum foil as the cathode tool significantly enhances machining accuracy in the transition area of the shaft shoulder. Additionally, the simplicity and reliability of this method highlight its advantages.

The foresight methodology for transitional shale gas reservoirs prediction based on a knowledge graph

The sedimentary environment in the eastern Ordos area of China is complex and contains a large number of transitional facies environments. Yet, there are many characteristics such as large vertical lithology changes, complex lateral sedimentary environment changes, small monolith thickness and large organic matter content changes, which lead to large uncertainty in the prediction of favorable areas for transitional shale gas. As the intricate reservoirs continue to unfold, the conventional linear prediction methods find themselves facing an arduous path to meet the demands of development. The ever-evolving complexity of these reservoirs has outpaced the capabilities of these traditional approaches. It becomes apparent that a more comprehensive and adaptable approach is necessary to navigate the intricacies of these reservoirs and unlock their hidden potential. Therefore, we put forward a method of introducing knowledge graph into transitional shale gas reservoir prediction in the eastern Ordos region by using big data technology. Because artificial intelligence big data relies heavily on data tags, it is particularly important for the construction of tags. Firstly, a top-down knowledge graph in the field of reservoir prediction is constructed to determine the key parameters used in prediction, namely porosity, total organic carbon and brittleness index. Secondly, the decision tree knowledge graph optimization label is constructed in a bottom-up way. The key parameter of this prediction is the knowledge graph obtained according to the professional knowledge of reservoir prediction, so as to optimize the school label of U-net and reduce the workload of artificial judgment. The results of the combination of the two methods are applied to 11 wells in Daji area of Ordos, and the experimental results are consistent with the actual situation of the reservoir. Based on the foundation of theoretical knowledge, this method enhances the efficiency and accuracy of interpretation and evaluation. It provides fundamental and technical support for the selection of favorable areas in shale gas exploration and the evaluation of exploration and development prospects, particularly in transitional shale gas areas, which is innovative and advanced in the field.

Stoichiometric and Accumulation Characteristics of Nitrogen and Phosphorus in Artificial and Natural Herbaceous Plants along Lakeshore Buffer Zone

Lakeshore buffer zones serve as transitional areas between terrestrial and aquatic ecosystems, playing a crucial role in intercepting non-point source pollutants, purifying river and lake water, and maintaining ecological system dynamics. This study focuses on the vegetation of the lakeshore buffer zone in Songhua Lake, the largest artificial lake in Northeast China. The nitrogen (N) and phosphorus (P) pollutant contents and accumulation characteristics of herbaceous plants were investigated and analyzed in different regions and with different species. The study results indicate that there were no significant differences in N and P content, N: P ratio, and average accumulation among vegetation in the near-water, middle, and far lakeshores of the buffer area. The herbaceous plants with the highest N and P content and N: P ratios were Artemisia sieversiana, Sium suave, and Artemisia sieversiana, respectively. Purus frumentum planted in the middle lakeshore accumulated the highest amounts of N and P, reaching 87.97 g plant−1 and 3.86 g plant−1, respectively. The aboveground parts of plants showed significantly higher accumulation of N and P compared to the underground parts. The average enrichment coefficient for aboveground parts and underground parts for N were 4.83 and 4.35, respectively, all exceeding 1. However, their capability to enrich P was relatively weak, with only the aboveground parts of F − 3 showing some enrichment ability. Among herbaceous plants, Artemisia sieversiana and Sium suave exhibited the strongest capability for transporting N and P from underground to aboveground. Overall, harvesting aboveground biomass for the ecological removal of N and P in the study area appears feasible. Biomass is a critical factor influencing the nutrient interception capacity of vegetation, with Purus frumentum identified as an optimal restoration plant for sustainable management practices, and Artemisia sieversiana and Sium suave have the potential for rapid remediation.

Rare bacterial taxa drive the ecosystem multifunctionality in lake water-level-fluctuating zone during seasonal water level fluctuations

Complex microbial community plays a crucial role in driving soil ecosystem multifunctionality. Water-level-fluctuating zone (WLFZ) of lakes serves as vital transitional areas between land and water, exhibiting crucial ecological functions. However, the relationship between soil moisture-sensitive bacterial communities and ecosystem multifunctionality remains poorly understood. In this study, we conducted a two-year seasonal field survey in the WLFZ of one large flooding lake. By using amplicon sequencing, we explored the changing characteristics of soil bacterial communities during water level fluctuations and their driving role in ecosystem multifunctionality. A simultaneous decrease in soil bacterial diversity and ecosystem multifunctionality was observed as the soil transitioned from drought to flooding states. Soil bacterial diversity was positively correlated with ecosystem multifunctionality, and rare bacterial sub-communities showed a higher correlation with multifunctionality than the overall bacterial community. Random forest regression analysis demonstrated that rare bacterial sub-communities were the optimal predictor variable for ecosystem multifunctionality in the WLFZ. Additionally, Actinobacteriota and Methylomirabilota held significance in predicting multifunctionality under drought and flooding states, respectively. This study highlighted the predominant role of soil rare bacterial sub-communities in driving ecosystem functionality in the WLFZ.

Coupling relationship and development patterns of agricultural emission reduction, carbon sequestration, and food security

In-depth exploration of the coupling relationship between agricultural emission reduction and carbon sequestration (ERCS) and food security provides an important basis for promoting sustainable low-carbon development in agriculture. This research investigates the coupling mechanisms and the current state of coordinated development of agricultural ERCS and food security using provincial panel data from 2001 to 2022 in China. The agricultural ERCS level shows an upward trend, with higher levels in the north and lower in the south; externalities are positive in the north but negative in the south. Significant dynamic interactions and spatial correlations between the agricultural ERCS and food security exist, with a local spatial agglomeration pattern of “north–south opposition”. Areas of high-high agglomeration are mainly concentrated in the north, while low-low agglomeration areas are primarily in the south. High-high agglomeration areas drive growth in transitional and low-growth areas through diffusion effects. The average coupling coordination degree of provinces increased from 0.432 to 0.473, indicating more coordinated development, and with a decreasing polarization trend. The spatial distributions of the coupling coordination degree and the relative development index are higher in the north and lower in the south, with many areas showing high adjustment, low adjustment, and high antagonism, particularly in the south where the number of high antagonistic areas has decreased. Implementing differentiated development strategies between the north and the south, using spatial agglomeration characteristics to optimize regional policies, focusing on the diffusion effects of high-coupling coordination areas to drive the development of low-growth and transitional areas, and enhancing the lagged terms can promote sustainable coordinated agricultural development.

Microstructure and mechanical properties of Ti60–Ti2AlNb functionally graded materials fabricated by laser directed energy deposition

The increasing demands for materials that service under high temperature environments in advanced aero-engines with high thrust-to-weight ratios have led to the exploration of functionally graded materials, which can offer unique advantages for addressing these challenges, such as the ability to achieve multiple properties at different positions of the components. In this study, Ti60–Ti2AlNb functionally graded materials were fabricated via laser directed energy deposition (L-DED) with 20% compositional step and various step widths in the transition zone. The distribution of chemical composition, microstructure, and microhardness in the transition zone of functionally graded materials with different compositional paths along the deposition direction were investigated. Meanwhile, the mechanical properties and fracture mechanisms were also evaluated. Smooth composition transition has been achieved in the joint zone between Ti60 and Ti2AlNb. By decreasing the width of each composition zone in the transition area or removing the Ti60-60% Ti2AlNb zone, the precipitation of the hard and brittle α2 phase can be effectively suppressed, thereby enhancing the tensile strength of the graded material. Through this approach, Ti60–Ti2AlNb functionally graded material with a tensile strength of 1030.9 MPa and elongation of 2.0% was fabricated.

Species Substitution and Changes in the Structure, Volume, and Biomass of Forest in a Savanna

Research related to Cerradão vegetation focuses more on the floristic-structural aspect, with rare studies on the quantification of volume and biomass stocks, and even fewer investigating the increments of these attributes. Using a systematic sampling method with subdivided strips and 400 m2 plots, the density found was 1135, 1165, and 1229 trees/ha in 2012, 2020, and 2023, respectively, in Lajeado State Park, Tocantins State, Brazil. Volume was estimated using the equation v=0.000085D2.122270H0.666217, and biomass was estimated using the equation AGB=0.0673ρD2H0.976. Vegetation dynamics were assessed using growth increment, recruitment, mortality, turnover rate, and time. The results indicated that dynamics have increased since the start of monitoring. Typical Cerrado species, in the strict sense, were replaced by those from forest environments. The total production in volume and biomass was 160.91 m3/ha and 118.10 Mg/ha, respectively, in 2023. The species of Emmotum nitens, Mezilaurus itauba, Ocotea canaliculata, and Sacoglottis guianensis showed the highest increment values in volume and biomass. For the community, the average values were 4.04 m3/ha/year and 3.54 Mg/ha/year. The community has not yet reached its carrying capacity and stores a significant amount of biomass. This is influenced by the transition of the study area from an exploited environment to a conservation unit (park) and by its location in a transitional area with the Amazon biome.

Reasons for Depressurization of a High-Pressure Cylinder

High-pressure cylinders are vessels for storing and transporting compressed gases under high pressure, which are necessary for use in various technological processes. These vessels are mainly made of steel or aluminum and have significant strength to withstand high (more than 400 kgf/cm2) pressure. Such cylinders have a wall of sufficiently large thickness and are used in various industries. The object of the study is a one-piece forged cylinder made of 38ХН3МФА steel. The purpose of this study is to determine the causes of cylinder depressurization, which occurred during filling the cylinder with helium at a speed of 7.5 m3/h at an operating pressure of 365 kgf/cm2. As is known, when operating process equipment operating under excess pressure, damage may occur due to the structure of the material and the features of its mechanical properties. This damage can lead not only to the failure of the vessel itself, but also to damage to other units and parts located nearby. And if people are working nearby, the cost of such an accident will be even higher. Therefore, the study in this article of the causes of destruction of a high-pressure cylinder is very relevant. A set of studies (visual and measuring control, factographic, metallographic and spectral analysis) was carried out, which helped to establish the cause of the destruction of the vessel body at the neck of the cylinder. The main conclusion on the causes of depressurization of the vessel in question is the presence of a stress concentrator, namely, a depression of the folds of the cylinder, which was formed during the formation of the neck of the cylinder in the transition area from the cylindrical part to the neck. During long-term operation, under the influence of residual technological stresses, a crack was formed, which spread from the inner surface of the cylinder to the outer one, up to its through damage, which led to depressurization.

Genetic Identification of Endemic Fish Nomorhamphus liemi Vogt, 1978 from Sigi, Central Sulawesi, Indonesia

Sulawesi Island is geographically included in the Wallacea region, a transitional area between the Oriental and Australian zones, which makes Sulawesi’s fresh waters have a high level of fish species diversity. Some fish species found in Sulawesi freshwater are endemic. Research on Sulawesi endemic fishes in rivers is not as much as research on endemic fishes in lakes. Nomorhamphus liemi or locally known as angculung is one of Sulawesi’s endemic fishes. This species belongs to the sub-family Zenarchopterinae. The majority of species from the Zenarchopterinae sub-family are sexually dimorphic. This study aimed to molecularly identify angculung fish species using COI markers in the region. A total of nine angculung fish were collected and preserved using 96% alcohol. In the laboratory, tissue taken from the back of the dorsal fin was isolated and extracted, then amplified by PCR before sequencing. Sequencing results were validated on BLASTn, showing that nine samples belonged to Nomorhamphus liemi with 98-99% sequence similarity. The nucleotide base sequences were then analyzed using MEGA 7.0 software. The genetic distance of mackerel in these waters showed a close relationship. Phylogeny tree results showed population mixing so that mackerel in these waters can be managed in one management unit, especially in Sulawesi.

Structure of the basement of the near-Laptev part of the Eurasian basin according to geological and geophysical data

The near-Laptev part of the Eurasian basin is the area of transition from modern spreading to intraplate rifting. We propose an approach to the construction of a 3D model of the basement of the Laptev Sea part of the Eurasian basin based on the linkage of all currently available geological and geophysical data. The structure of the acoustic basement of the Eurasian basin is characterized by alternating troughs and highs in cross-section. The sparse seismic data do not allow us to directly trace the strike of these structures, but they can be correlated with the linearity established by gravity and magnetic data and related to the sequential opening of the basin. For the Laptev Sea part of the Eurasian basin, where linearity is no longer traceable from magnetic data, we propose a method of determining the strike of the basement structures on the basis of seismic stratigraphic analysis. The new 3D model of the acoustic basement in the studied area provided the basis for the tectonic scheme of the entire Eurasian basin. The model reflects the main stages of basin development: continental rifting up to 56 Ma, normal spreading 56–45 Ma, ultra-slow spreading 45–34 Ma, ultra-ultra-slow spreading 34–20 Ma. The southern part of the study area is overlain by a sedimentary cover with an age of 20 Ma and younger, which is associated with the cessation of spreading here no later than 20 Ma.