Analysis of influencing factors and training strategies of young talents′ scientific research performance in the third level public hospital / 中华医学科研管理杂志

Objective:To investigate the influencing factors of the scientific research performance and analyze the differences between subjective and objective ones among the different characteristics of staffs in work and then propose tailored management strategies based on the research findings.Methods:A total number of 963 young researchers under the age of 45 (including doctors, medical technicians, scientific researchers) were surveyed and the impact on the scientific research performance of four subjective and objective factors including demographic characteristics and research motivation, self-efficacy, team support and the external environment were analyzed through self-developed questionnaire.Results:The academic degree, age, time spent overseas, administrative position, postgraduate mentor, professional title and levels, category of departments on the scores of scientific research performance had reached statistical significance ( P <0.05) by using Single factor analysis. The results showed that the impact on the scientific research performance followed a descending order of the category of postgraduate mentors, academic degree, professional title levels, the category of departments, self-efficacy, time spent overseas, and professional title series. Conclusions:According to the survey, this research focuses on the predictive factors which affecting scientific research performance as the important methods of scientific research promotion and talent training, and puts forward to the ideas of talent training, scheme of optimizing talent selection, carrying out accurate policy implementation and scientific assessment.

Process reengineering and effectiveness analysis of scientific research achievements reward based on scientific research management system / 中华医学科研管理杂志

Objective To make good use of the incentive function of the reward policy of scientific research achievements in hospitals ,shorten the reward cycle of scientific and technological achievements ,reduce the management cost ,achieve the ul-timate goal of details management of scientific and technological achievements .Methods Through retrospective analysis of the incentive process to identify possible barriers ,reconstruct the rewarding procedures of scientific and technological achievements by bringing in informatization and publicity strategy ,compare the bonus distribution cycle with the traditional model .Results The results show that the reward model based on the scientific research management system reduces the bonus arrival waiting period by about 62％ ,saves management costs and improves staff compliance .Conclusions According to the 4-year practice experiences ,the new management model has further released the positive impact of the hospital award policy ,solved the key problem of restricting the rewarding effect by technological means in the process of rewarding scientific research achievements .

Practice and effect analysis of scientific papers delicacy management in "double track parallel" / 中华医学科研管理杂志

Objective To provide authors with more quality services,so as to improve management efficiency,reduce management time and manpower cost,ultimately achieve the expected delicacy management of scientific papers.Methods Indicators of traditional management pattern and "double track parallel" management mode of the scientific papers management process were compared through retrospective study.Such indicators include authors' operation,data error rate,average working cycle,management cost,user experience,data barriers,self-management consciousness and others.Resuits Significant improvements were shown in the data accuracy,management cost savings,user satisfaction,and data sharing in the "double track parallel" management model.Conclusions 5 years of practice demonstrated that the "double track parallel" management model not only effectively connects hospital policy and technical method,but also solves the key problems of data barriers,disjointed management and low efficiency.Scientific paper management is expected to be more refined and effective.

Strabismus surgery distribution during 10-year period in a tertiary hospital / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>There is no large population-based study of the distribution and changing trend of strabismus surgeries in China. This study aimed to investigate the distribution and the changing trend of strabismus surgery in a tertiary hospital of China.</p><p><b>METHODS</b>A retrospective study of all the strabismus surgeries performed in Beijing Tongren Eye Center from 2003 to 2012 was carried out. Characteristics analyzed included the type of strabismus, age, and gender.</p><p><b>RESULTS</b>Totally 26 524 strabismus surgeries were performed in Tongren Eye Center during the 10-year period. The number of surgeries increased steadily from 1 507 in 2003 to 3 482 in 2008 and slightly decreased to 3 124 in 2009, but there was a sharp drop to 2 569 in 2010 and then kept relatively steady at 2 760 in 2011 and 2 463 in 2012. Intermittent exotropia (30.3%) was the most common among all kinds of strabismus. The number of strabismus surgeries performed on children under 12 years of age (43.60%) was significantly higher than those of the other age groups (P < 0.05). Unilateral superior oblique paralysis was the most common subtype of paralytic strabismus (8.64%).</p><p><b>CONCLUSIONS</b>The type distribution of strabismus surgery has changed during the recent decade. The age and type distribution of different strabismus remained basically constant, among which intermittent exotropia was the most common.</p>

Drift correction in fMRI signal based on mathematical morphology / 中国医学影像技术

Objective To establish a new approach based on mathematical morphology that can effectively reduce the drifts in functional magnetic resonance imaging (fMRI) signals. Methods Based on investigation of the characteristic of drifted fMRI signals, a mathematical morphology method for baseline drift correction was presented. Results With both simulated data and real fMRI data, the results of the experiment showed that the mathematical morphology method can effectively correct the baseline drifts. Conclusion Both linear and nonlinear drifts can be removed with the proposed method without any statistical model assumption.

Detailed magnetic resonance imaging findings of the ocular motor nerves in Duane's retraction syndrome.

PURPOSE: To study the neuroanatomic characteristics of patients with Duane's retraction syndrome with high-resolution magnetic resonance imaging. METHODS: The study included 11 consecutive cases, including five patients with type I, one patient with type II, four patients with type III, and one patient with inverse Duane's retraction syndrome. The patients underwent magnetic resonance imaging of the brain, brain stem, cavernous sinus, and orbits. RESULTS: In 10 patients, the abducens nerve (cranial nerve VI) was absent or showed hypoplasia in the brain stem, cavernous sinus, and orbit. However, these findings were not seen in the patient who had inverse Duane's retraction syndrome. In two children, magnetic resonance imaging showed that the cavernous sinuses were smaller on the affected side. The inferior division of the oculomotor nerve (cranial nerve III) was traced to enter the lateral rectus muscle or had intimate continuity with the lateral rectus muscle in nine patients with type I and type III Duane's retraction syndrome. In one patient with type III Duane's retraction syndrome, the oculomotor foramen was significantly larger on the affected side than on the sound side. In the patient with type II Duane's retraction syndrome, the superior division of cranial nerve III was enlarged and had three branches. In the patient with inverse Duane's retraction syndrome, the inferior division of cranial nerve III sent two branches to the medial rectus muscle, and the patient had superior oblique muscle hypoplasia. CONCLUSION: Neuroimaging findings showed that the absence of cranial nerve VI, hypoplasia in the brain stem, and an extra branch of the inferior division of cranial nerve III to the lateral rectus muscle is the most common presentation of Duane's retraction syndrome, but not the only one. The aberrant branches likely correspond to the abnormal eye movement seen in patients with this disorder.

Preliminary MRI study in patients with congenital complex strabismus / 中华放射学杂志

Objective Although the ocular motility examination has been traditionally used in the diagnosis of complex strabismus resulting from cranial nerve (CN) and extraocular muscles (EOM) abnormalities, magnetic resonance imaging (MRI) now permits the direct imaging of lesions in CNs and EOMs. Methods Twenty-six patients with complex strabismus underwent MRI examination on 1.5 T MR unit (Twinspeed, GE). Nerves to EOMs were imaged with T1 weighted in orbits in all patients using phase array surface colls. Results Patients with Duane syndrome ( 15 cases, 19 eyes) all exhibited absence or hypoplasia of abducens nerve (CN6), always with mild hypoplasia and apparent misdirection of oculomotor nerve ( CN3 ) to the lateral rectus muscle in the orbit, and there were no hypoplasia of EOMs. Patients with congenital fibrosis of EOMs (9 cases, 16 eyes) exhibited severe hypoplasia of CN3 and CN6, and EOMs appeared hypoplasia to a different degree, particularly severe for the superior rectus and levated palpted muscles. Multiple nerves displayed aplasia in patients with Mobius syndrome (1 case, 2 eyes) and there was abnormal branch from CN3 to lateral rectus. The tendons of bilateral superior oblique muscles were thin in the patients with Brown syndrome ( 1 case, 2 eyes). Conclusion MRI can directly demonstrate absence or hypoplasia of CNs and corresponding EOM abnormalities in congenital complex strabismus, which suggests that the mechanism of congenital complex strabismus is perhaps abnormal innervation or displasia of the ocular motor nerves.

Surgical management of large-angle incomitant strabismus in patients with oculomotor nerve palsy.

OBJECTIVE: To evaluate the surgical options in treating strabismus caused by different degrees of oculomotor nerve palsy. METHODS: Surgical procedures for 13 patients with unilateral oculomotor nerve palsy were retrospectively studied. Eight patients had partial paralysis with isolated or multiple muscle involvement. A greater amount of lateral rectus recession and medial rectus resection than is usual was performed in six cases; transposition combined with resection of the medial rectus was performed in two cases with limited hypotropia. Of five patients with total oculomotor nerve paralysis, three underwent transposition of the superior oblique tendon to the superior site of the medial rectus insertion. The other two patients, having total oculomotor nerve paralysis combined with trochlear nerve palsy, underwent fixation of the globe to the anterior lacrimal crest by half a tendon width of the medial rectus. Extremely large (10-12 mm) lateral rectus recessions were performed in all patients. Pre- and postoperative horizontal and vertical deviations were measured to assess the surgical outcomes. RESULTS: Preoperative deviations of the affected eye were exotropia of 80(Delta) to 120(Delta), five cases with hypotropia of 15(Delta) to 35(Delta), and two cases with hypertropia of 15(Delta) to 20(Delta). After 6 to 27 months of postoperative follow-up, eye alignment showed horizontal residual deviation of 0(Delta) to 20(Delta) exotropia and vertical residual deviation of 4(Delta) to 10(Delta) hypotropia. CONCLUSIONS: By choosing the appropriate surgical procedure, eye alignment in the primary position was achieved, but recurrence of the exotropia was unavoidable, and a residual exotropia of 10(Delta) to 20(Delta) remained in most patients.

Finite element modeling and biomechanical analysis of eyeball and extraocular muscles.

Finite Element Analysis (FEA) plays an important role in the biomechanical field. In this paper, we used FEA method in the area of ophthalmology. We generated an eyeball - extraocular muscles (EOMs) model and converted it to meet the need of FEA process. We exerted outside forces on the structure for nonlinear computation and achieved the distributions of displacement, stress and strain. The results corresponded with the basic theory of ophthalmology. We also put forward some related aspects for discussion and advanced studies.