Public Key-Based Authentication and En-Route Filtering Scheme in Wireless Sensor Networks.

The existing public key-based en-route filtering schemes are vulnerable to report disruption attacks or selective forwarding attacks, and they fail to consider any measure to detect and punish the malicious nodes. The authors propose a series of public key-based security mechanisms for wireless sensor networks (WSNs) in this paper, including a mechanism for verifying the partial signatures, a substitution mechanism, an effective report forwarding protocol, and a trust value-based mechanism to identify and punish the malicious nodes. Finally, the authors develop a public key-based authentication and en-route filtering scheme (PKAEF), which can resist false data injection attacks, report disruption attacks and selective forwarding attacks, and can mitigate the impact of malicious nodes.

[LONG-TERM RESULTS OF DELAYED REPAIR OF MEDIAN NERVE INJURY].

Objective: To review and analyze the long-term results of delayed repair of median nerve injury.

Methods: Between January 2004 and December 2008, 228 patients with median nerve injury undergoing delayed repair were followed up for more than 4 years, and the clinical data were retrospectively analyzed. There were 176 males (77.

[Segmental schwannomatosis in upper-extremity: 5 cases report and literature review].

Objective: Multiple schwannomas localized in a single body part not crossing the midline constitute a rare variant of neurofibromatosis, segmental schwannomatosis. We report our experience with 5 cases of segmental schwannomatosis of the upper extremity and review the related literature to improve our skills in diagnosis and differentiation.

Methods: Five patients with segmental schwannomatosis received surgical treatment in our department from 2003 to 2012, of whom 4 were female and the other one male.

Schwannomatosis: a new member of neurofibromatosis family.

Background: Schwannomatosis is a recently recognized peripheral nerve polyneoplasm with clinical characteristics and a genetic background that differ from those of neurofibromatosis 2 (NF2). The diagnostic and treatment criteria of this rare disorder are herein discussed.

Methods: The data of 180 patients who underwent operations for benign schwannomas from 2003 to 2012 in our center were reviewed.

[An epidemiological investigation of acute occupational hand injuries].

Objective: To study composition, distribution and causes of acute occupational hand injuries in Beijing Jishuitan Hospital.

Methods: From April 1st 2005 to September 30th 2005, all patients with acute hand injuries were investigated by questionnaire focusing on all related epidemiological elements.

Results: Two thousand six hundred fifty eight cases with acute hand injuries were about 17.

[Epidemiological features of acute hand injuries in daily life in Beijing area].

Objective: To study the composition, distribution, and influencing factors of acute hand injuries in daily life in the Beijing area by analyzing the clinical data from patients with acute hand injuries.

Methods: Between April 1st 2005 to September 30th 2005, 2575 patients with acute hand injuries in daily life from Beijing area were investigated by questionnaire. The epidemiological factors were analyzed, including gender, age, injury time, injury cause, accident place, injury mechanism, and location.

Impaired nerve regeneration and Schwann cell activation after repair with tension.

The aim was to investigate the relation between axonal outgrowth (neurofilaments) and Schwann cell activation (activating transcription factor 3) and apoptosis (caspase 3) 10 days after nerve repair with no, minor (3 mm defect) and moderate (6 mm defect) tension in rat sciatic nerve using immunohistochemistry. After repair with no tension, axons grew 11.75 mm, but repair with minor and moderate tension impaired axonal outgrowth by 29 and 48%, respectively, with a reduced number of activating transcription factor 3 stained and an increased number of caspase 3 stained Schwann cells.