Biocapacity evaluation is an important part of sustainable development research, but quantitative and spatial future scenario analysis still have model methodological difficulties. Based on the high-resolution Globeland30 dataset, authors analyzed characteristics land use/cover changes Loess Plateau in Northern Shaanxi from 2000 to 2020. Then, comprehensively considering driving factors social ...

We mapped six distinct glacial moraines alongside Stocking Glacier in the McMurdo Dry Valleys, Antarctica. Stocking Glacier is one of several alpine glaciers in the Dry Valleys fringed by multiple cold-based drop moraines. To determine the age of the outermost moraine, we collected 10 boulders of Ferrar Dolerite along the crest of the moraine and analyzed mineral separates of pyroxene for cosmo...

We develop an intrinsic necessary and sufficient condition for single-vertex origami crease patterns to be able to fold rigidly. We classify such patterns in the case where the creases are pre-assigned to be mountains and valleys as well as in the unassigned case. We also illustrate the utility of this result by applying it to the new concept of minimal forcing sets for rigid origami models, wh...

We survey results on the foldability of flat origami models. The main topics are the question of when a given crease pattern can fold flat, the combinatorics of mountain and valley creases, and counting how many ways a given crease pattern can be folded. In particular, we explore generalizations of Maekawa’s and Kawasaki’s Theorems, develop a necessary and sufficient condition for a given assig...

condition of contour lines in topographic maps, explains more geomorphologic issues such as effective processes in the land forms found in nature. change in the curvature of the transverse profile of a valley in mountainous areas, the peak of the mountain range, also reflect the geomorphologic features and expresses the tectonic events and climate changes occurring in the region. these changes ...

Basically, this paper says that if you want to reach the top of a mountain, you should keep it in focus, which is obvious. It also says that the topology of mountains is not the same at their top than in the valleys, which is something also obvious. It says that going from the valley up to a certain altitude is rather easy and within the ability of most people, but going higher is more diicult ...

Mountains are perceived as places of biodiversity, attractive with breathtaking aesthetic views and epitomized by their unique landscape features. As mountains the second most demanded outdoor destination category at a global level after beaches islands, steady growth tourism high pressure on sensitive mountain ecosystems. can be observed from practice in environments, distribution activities i...