We study the repeal of a regulation that imposed maximum wholesale and retail markups for all but five fresh fruits and vegetables. We compare the prices of products affected by regulation before and after the policy change and use the unregulated products as a control group. We find that abolishing regulation led to a significant decrease in both retail and wholesale prices. However, markup re...

Prosodic headedness generally refers to the location of relevant prosodic events at the left or right end of prosodic constituents. In a bottom-up procedure based on a computational F0 stylization we tested several measures to quantify headedness in parametrical and categorical terms for intonation in the accentual phrase (AP) domain. These measures refer to F0 level and range trends as well as...

В статье представлены структурно-функциональная схема виртуального осциллографа, описание макетной платы, блока «COM-порт». Представлены режимы работы аналого-цифрового преобразователя и UART в микроконтроллере STM32. Из представленных режимов выбраны оптимальные для осциллографа. Цель исследования: разработать виртуальный осциллограф на основе микроконтроллера STM32, предложив его структурно-ф...

In the increasingly developing logistics industry, application of intelligent cars is becoming more and common. This paper mainly introduces a design scheme based on STM32F103ZET6 single-chip microcomputer OpenMV programmable camera. Its main process as follows. First, through OpenMV, car can scan QR code to read relevant information task. Then, recognizes color object, controls manipulator arm...

The novel meso-nucleo-spinics effect of the nuclear spin polarization induced periodic structure creation in a low-dimensional electron system is studied theoretically. It is shown that the periodically distributed nuclear magnetization results in the periodic hyperfine magnetic field which, in turn, creates a periodic electron structure. The electron wave functions and energy spectrum for such...

This paper presents the development of a remotely operated vehicle (ROV), designed to serve as a convenient, cost-effective platform for research and experimental validation of hardware, sensors and control algorithms. Both of the mechanical and control system design are introduced. The vehicle with a dimension 0.65 m long, 0.45 m wide has been designed to have a frame structure for modificatio...