Publications by authors named "Kedi Zhang"

Precision electronic warfare is a hot direction for future jamming technology development, and distributed precision jamming (DIPJ) is one of its typical application scenarios. The task objective of DIPJ is to design jamming waveforms so that the jamming energy generated by a set of ultra-sparse array transmitters can be focused in the jamming region of interest while being suppressed in other specific protected regions, which can be viewed as a distributed multiple-input and multiple-output system waveform design problem under a three-dimensional scenario. This paper extends the jamming signal model in DIPJ from narrowband to wideband based on previous work to address a broader range of jamming tasks.

View Article and Find Full Text PDF
Article Synopsis
  • Robotic pancreaticoduodenectomy (RPD) is becoming a common treatment for primary nonampullary duodenal adenocarcinoma (PNDA), showing several benefits over traditional open pancreaticoduodenectomy (OPD).
  • A comparative study involving 49 RPD and 43 OPD patients revealed that RPD resulted in less blood loss, quicker return to oral intake, and shorter hospital stays, while showing no significant differences in major complications or survival rates.
  • Overall, RPD is considered a safe and effective alternative to OPD for treating PNDA, but more extensive randomized trials are needed to further assess its effectiveness.
View Article and Find Full Text PDF

Background: Nab-paclitaxel plus gemcitabine (AG) has resulted in higher tumor response and survival rates for metastatic or advanced pancreatic ductal adenocarcinoma (PDAC) compared with gemcitabine (GEM) alone.

Aim: To examine the feasibility and safety of AG adjuvant chemotherapy of resectable PDAC.

Methods: We retrospectively analyzed patients with resected PDAC who received AG or GEM as postoperative adjuvant treatment between January 2013 and December 2016 at the Chinese People's Liberation Army General Hospital, Beijing, China.

View Article and Find Full Text PDF

Background: With the advancement of robotic pancreaticoduodenectomy (RPD), several reconstruction methods have been advocated to make RPD more effective and safer. In this study, we investigated the safety and effectiveness of RPD using a left retrocolic (L-port) technique and compared it with those of RPD using an antecolic technique.

Methods: Between October 2015 and August 2016, we retrospectively reviewed consecutive cases of RPD before and after introducing the L-port technique for gastrointestinal reconstruction.

View Article and Find Full Text PDF

Objective: To assess the safety and advantages of robotic pancreatic surgery (RPS) based on the single-team experience with 1010 cases.

Methods: The clinical data of 1010 cases of RPS performed by a single team from November, 2011 to September, 2017 in our hospital were collected prospectively and analyzed. In most of cases the surgeries were performed using the third-generation da Vinci robotic surgical system.

View Article and Find Full Text PDF