时间管理

时间是什么，商贾说时间就是金钱，医生说时间就是生命，将领说时间就是胜利，孩子说时间就是快快长大，老人说时间就是留也留不住的夕阳。

你的时间哪里去了？

社会的发展让其本身变得越来越繁复．这个代价转化到我们每个人身上．就是需要去考虑、去顾忌、去解决的事情越来越多。较之以前．时间显得更加紧凑．密度也更大．所以是否能够科学合理地调度时间、利用时间成为了每一个人不得不需要思考的问题。当然．前提是你总想着法子让你的人生能变得更有意义．非常不愿意让整个岁月虚度。于是．当在被问及或自问“你的时间哪里去了”的时候．只要确信它没有浪费在无所事事漫无目的中．而都被用在了计划之中．那么这也算是一种安慰了。

The trend of change in catheter ablation versus antiarrhythmic drugs for the management of atrial fibrillation over time： a meta-analysis and meta-regression

Objective To evaluate the trend of change in the efficacy and safety of catheter ablation compared with antiarrhythmic drug therapy （ADT） for rhythm control in patients with atrial fibrillation （AF） over time. Methods The online databases PubMed and EMBASE were searched for relevant studies. STATA software （version 12.0） was used to perform the meta-analysis and meta-regression. Results Fifteen randomized controlled trials including 2249 patients with AF were identified. The pooled results showed that catheter ablation was associated with a 52% reduction in the risk of AF recurrence compared with ADT [risk ratio （RR） = 0.48, 95% confidence interval （CI）： 0.40-0.57, I2 = 70.7%）. Subgroup analyses showed that catheter ablation exhibited less efficacy in studies after 2011 compared to studies before 2011 （RR = 0.61, 95% CI： 0.54-0.68, I2 = 9.3% and RR = 0.34, 95% CI： 0.24-0.47, I2 = 69.9%, respectively）, and the safety outcome showed a 1.08-fold higher incidence of adverse events （14.2% vs. 7.3%; RR = 1.08, 95% CI： 1.04-1.13） in studies after 2011. Conclusions Catheter ablation appears to be superior to ADT for rhythm control. However, less efficacy and a higher rate of adverse events were observed in studies after 2011 compared to studies before 2011.

A Trusted Routing Protocol Based on GeoDTN＋Nav in VANET

Because the node of vehicular ad-hoc networks has the characteristics of high mobility and encounter temporary, a trust management between the nodes in the routing process becomes more difficult. To solve this problem, this paper proposes a new trusted routing protocol in VANET based on GeoDTN＋Nav by using trust management model of Bayesian and the three opportunistic routing forwarding models, which includes four steps of the routing initialization, the routing discovery, the trusted routing establishment and the routing deletion. The proposed protocol not only improves the security of routing, but also has the lower time complexity. Besides, experimental results and analysis show that the protocol has achieved good performance in the removal ratio of malicious nodes, correct reception ratio of packet and the message payload.

Three Models of English Education in China＇s Universities ——-A Historical Perspective

In the present paper, a comparison is made of the three formats in the history of EECU （English education in China＇s universities）. In the first period （1904-1949）, English education was conducted separately in government-managed educational institutions and in institutions sponsored by church-related organizations; English education was well-knit with both general education and specialty education; and self-motivating learning was encouraged. In the second period （1950-1966）, almost everything was tinted with a shady color of politics： A halt was addressed drastically to EEC （English education in China） in 1952. In the gradual recovery that started four years later, the second format was sawed and hammered, showing the following features： All non-government-mamaged institutions vanished from the stage; English was taught solely as a language or a system of verbal parts, almost deprived of all cultural loading. The third period （1978 onwards） has witnessed a barrier-free and rapid development of over three decades, resulting in the unprecedented pervasion of EECU. Yet in the third tbrmat, learners＇ efforts have turned wholly test-oriented, degenerating into the saddening disintegrity of learning as a process into isolated charges to the target of a test at a time; the ignorant reduction of the learning methods to ＂Vocabulary Booklets Plus Collections of Test Papers＂. Such a comparison not only provides a multi-dimensional perspective of EECU and a better understanding of it, but also offers some important experiences and lessons for the search of an effective solution to the pervasive problem of＂Time-Consumingness and Low-Efficiency＂.

Role of surgical intervention in managing gastrointestinal metastases from lung cancer

AIM:To investigate the clinicopathological characteristics of late-stage lung cancer patients with gastrointestinal(GI)-tract metastases,focusing on therapeutic options and outcomes.METHODS:Our institution(the National Taiwan University Hospital) diagnosed 8159 patients with lung cancer between 1987 and 2008,of which 21 developed symptomatic GI metastases.This study reviewed all of the patients' information,including survival data,pathological reports,and surgical notes.RESULTS:The most common histological type of lung cancer was adenocarcinoma,and 0.26% of patients with lung cancer developed GI metastases.The median duration from lung cancer diagnosis to GI metastases was three months(range,0-108 mo),and the average time from diagnosis of GI metastasis to death was 2.8 mo.Most patients with symptomatic gastric and/or duodenal metastases exhibited GI bleeding and were diagnosed by panendoscopy.In contrast,small bowel metastases typically presented as an acute abdomen and were not diagnosed until laparotomy.All patients with small bowel or colonic metastases underwent surgical intervention,and their perioperative mortality was 22%.Our data revealed a therapeutic effect in patients with solitary GI metastasis and a favorable palliative effect on survival when metastases were diagnosed preoperatively.In patients with multiple GI metastases,the presentation varied according to the locations of the metastases.CONCLUSION:Surgical treatment is worthwhile in a select group of patients with bowel perforation or obstruction.Physicians should be more alert to symptoms or signs indicating GI metastases.

Heart failure in the elderly

The aging of the population is, currently, a major phenomenon, drawing the attention of a number of investigators. The significant increase of life expectancies over the past few decades, in addition to social and economic consequences, has lead to a major change in the morbidity and mortality profile of elders. Heart failure （HF） is a condition in which the heart can not pump enough blood to meet the body＇s needs. HF is predominantly a disorder of the elderly with rates increasing exponentially. The prevalence of HF approximately doubles with each decade of life. As people live longer, the occurrence of HF rises, as well as other conditions that complicate its treatment. Impaired heart function implies a reduced duration of survival. Fortunately, many factors that can prevent HF and improve outcome are known and can be applied at any stage. This review emphasizes the importance of factors inherent in aging itself, focusing on heart disease, particularly as a disease of aging, can help critically refine management of this acute and chronic disease, as well as foster preventive strategies to reduce the incidence of this common malady.

Pearson＇s Correlation Coefficient： A More Realistic Threshold for Applications on Autonomous Robotics

Many applications for control of autonomous platform are being developed and one important aspect is the excess of information, frequently redundant, that imposes a great computational cost in data processing. Taking into account the temporal coherence between consecutive frames, the PCC （Pearson＇s Correlation Coefficient） was proposed and applied as： discarding criteria methodology, dynamic power management solution, environment observer method which selects automatically only the regions-of-interest; and taking place in the obstacle avoidance context, as a method for collision risk estimation for vehicles in dynamic and unknown environments. Even if the PCC is a great tool to help the autonomous or semi-autonomous navigation, distortions in the imaging system, pixel noise, slight variations in the object＇s position relative to the camera, and other factors produce a false PCC threshold. Whereas there are homogeneous regions in the image, in order to obtain a more realistic Pearson＇s correlation, we propose to use some prior known environment information.

Developing time-management skills in the foreign language classroom

The practical problems all students may face at some point in their college life are procrastination and time management. A recent survey shows that most of the first-year college students with language learning disabilities lack time-management skills. In order to help the students solve these problems, a language teacher should not only help students to develop their language skills, but also help them to learn some techniques of time-management. To ensure that, teachers need to help the students with the setting of clear goals and ways of planning and scheduling time for a balanced lifestyle.

Influence of Thinning on Soil CO_2 Efflux in Chinese Fir Plantations

Forest management is expected to influence soil CO2 effiux （FCO2） as a result of changes in microenvironmental conditions, soil microclimate, and root dynamics. Soil EGO2 rate was measured during the growing season of 2006 in both thinning and non-thinning locations within stands ranging from 0 to 8 years after the most recent thinning in Chinese fir （Cunninghamia lanceolata （Lamb.） Hook） plantations in Huitong Ecosystem Research Station, Hunan, China. Soil temperature and moisture were also measured to examine relationships between FCO2 and soil properties. Forest thinning resulted in huge changes in FCO2 that varied with time since cutting. Immediately following harvest （year 0） FCO2 in thinning area increased by about 30%, declined to 20%-27% below pre-cutting levels during years 4-6, and recovered to pre-cutting levels at 8 years post-cutting. A similar temporal pattern, but with smaller changes, was found in non-thinning locations. The initial increase in FCO2 could be attributed to a combination of root decay, soil disturbance, and increased soil temperature in gaps, while the subsequent decrease and recovery to the death and gradual regrowth of active roots. Strong effects of soil temperature and soil water content on FCO2 were found. Forest thinning mainly influenced FCO2 through changes in tree root respiration, and the net result was a decrease in integrated FCO2 flux through the entire felling cycle.

Correlation between time management disposition and ability confidence of chinese nursing students： a meta-analysis

Objective： To evaluate the correlation between time management disposition and ability confidence of Nursing Students in China through the Pearson correlation coefficient. Methods： Electronic databases including the Cochrane library, PubMed, EMBASE, the Web of Science, CBM, Wanfang, VIP and CNKI were searched from inception to October 2017 to collect literature on the correlation between time manage-ment disposition and ability confidence of Chinese nursing students. The studies were examined according to the inclusion and exclusion criteria. After extracting data and evaluating the quality of the included studies. Meta-analysis was carried out using Stata 12.0 software. Results： A total of 7 articles with 1632 nursing students were included, and the quality of the literature was at medium level. Meta-analysis shown the total score of time management disposition of Chinese nursing students and its three dimensions were related to ability confidence. The summary correlation coefficient between time management disposition and ability confidence was 0.52 （0.43 to 0.59） ; There is a weak correlation between time value and ability confidence （r, 0.33; 95% CI, 0.25 to 0.39）; There was a moderate level of correlation between time control and ability confidence （r, 0.49; 95% CI, 0.43 to 0.54）; There was a moderate level of correlation between time efficacy and ability confidence （0.47, 0.41, 0.53）.And the relevance of nursing time management disposition and behavioral confidence varies with the nursing student＇s area, nursing student＇s diploma, measurement tools and sample size. Conclusion： The time man- agement disposition of Chinese nursing students is moderately related to ability confidence. When there are different in nursing students in the area, nursing diploma, measurement tools and sample size, the relevance is very different. The time management disposition of Chinese nursing students and their ability confidence are mutually reinforcing, and the time management disposition and their ability confidence should be further strengthened in the future.

Analysis of the delayed approach to the management of infected pancreatic necrosis

AIM: To analyze outcomes of delayed single-stage necrosectomy after early conservative management of patients with infected pancreatic necrosis (IPN) associated with severe acute pancreatitis (SAP). METHODS: Between January 1998 and December 2009, data from patients with SAP who developed IPN and were managed by pancreatic necrosectomy were analyzed. RESULTS: Fifty-nine of 61 pancreatic necrosectomies were performed by open surgery and 2 laparoscopically. In 55 patients, single-stage necrosectomy could be performed (90.2%). Patients underwent surgery at a median of 29 d (range 13-46 d) after diagnosis of acute pancreatitis. Sepsis and multiple organ failure accounted for the 9.8% mortality rate. Pancreatic fistulae (50.8%) predominantly accounted for the morbidity. The median hospital stay was 23 d, and the median interval for return to regular activities was 110 d.CONCLUSION: This series supports the concept of delayed single-stage open pancreatic necrosectomy for IPN. Advances in critical care, antibiotics and interventional radiology have played complementary role in improving the outcomes.

Internet Addiction of College Students from the Psychological Perspective

With the rapid development of network, the phenomenon of Internet addiction is prevalent on campuses, which has produced a variety of negative effects on college students in terms of learning, living, working and so on. In recent years, there are many research literatures on Internet addiction overseas, covering all aspects of this psychological phenomenon. Moreover, domestic research on Internet addiction started late. In the light of the fact that college students do not have clear understanding on hazards of Interact addiction, it generally shows their self- control is poor. They do not believe they can control their behavior and results and give up taking responsibility for the results and tend to agree network identity. Based on this phenomenon, we propose the network psychological source control concept. In view of the close contact between the excessive use of the network and the individual time management, this study selected the time dimension of personality characteristics on Internet addiction as another influencing factor, and explored the integrated influence of the psychological source control to Internet addiction.

Anterior resection for rectal carcinoma-risk factors for anastomotic leaks and strictures

AIM:To determine the incidence and factors responsible for anastomotic leaks and stricture following anterior resection(AR)and its subsequent management.METHODS:Retrospective analysis of data from 108 patients with rectal carcinoma who underwent AR or low anterior resection(LAR)to identify the various preoperative,operative,and post operative factors that might have influence on anastomotic leaks and strictures.RESULTS:There were 68 males and 40 females with an average of 47 years(range 21-75 years).The median distance of the tumor from the anal verge was 8 cm(range 3-15 cm).Sixty(55.6%)patients underwent handsewn anastomosis and 48(44.4%)were stapled.The median operating time was 3.5 h(range2.0-7.5 h).Sixteen(14.6%)patients had an anastomotic leak.Among these,11 patients required reexploration and five were managed expectantly.The anastomotic leak rate was similar in patients with and without diverting stoma(8/60,13.4%with stoma and 8/48;16.7%without stoma).In 15(13.9%)patients,resection margins were positive for malignancy.Ninteen(17.6%)patients developed anastomotic strictures at a median duration of 8 mo(range 3-20 mo).Among these,15 patients were successfully managed with per-anal dilatation.On multivariate analysis,advance age(>60 years)was the only risk factor for anastomotic leak(P=0.004).On the other hand,anastomotic leak(P=0.00),mucin positive tumor(P =0.021),and lower rectal growth(P=0.011)were found as risk factors for the development of an anastomotic stricture.CONCLUSION:Advance age is a risk factor for an anastomotic leak.An anastomotic leak,a mucin-secreting tumor,and lower rectal growth predispose patients to develop anastomotic strictures.

Managing the Value of the Organization Based on Organizational Culture

Managing the value of the organization is taking place based on factors forming it. It is becoming possible thanks to such managing operations of the organization, when in the end an image in accordance with expectations, giving the state back to the value of organizations is being got. Creating the goodwill is based among others on immaterial factors, which although they are becoming impossible to include in balance, are taken hold in time value of the organization. Creation of the value of an organization may be based on the organizational culture. The article presents the essence of value management and organization characterized the factors affecting the formation of organizational culture, ways of dealing with an organization aimed at consolidating and strengthening the organizational culture. Sometimes organizations feel the need to change the culture in order to achieve increased efficiency and ensure the success of the company to implement the necessary changes. Therefore, the rest of this article presents the elements to ensure a smooth implementation and consolidation of cultural change.

Survey of Shopping Streets as Basic Knowledge for Revitalizing the Old Town Centre of Parma

The revitalization of the historic fabric should not be considered only a matter of safeguarding the cultural heritage of collective memory; it will mainly be to recover and value an urban life, as in the urban context, the historic centre plays a function of social identification and recognition of the community, that commercial distribution helps to keep alive. It is widely spreading the concept of Old Town as Natural Shopping Centre： with this word, we define commercial complex and not homogenous places, developed over time without programming unit. designed as a unique space, which fall within a certain urban perimeter, work together as a business, financial administration, facilities and service all coordinated by a common policy development. In order to recover the vitality of the consolidated tissue of the city of Parma, the Town Council has started to study its historic centre as Natural Shopping Centre, relying on the potential inherent in the existing commercial streets.

Tracheobronchial Polyflex stents for the management of benign refractory hypopharyngeal strictures

AIM:To describe a modified technique for placement of a tracheobronchial self-expanding plastic stent(SEPS) in patients with benign refractory hypopharyngeal strictures in order to improve dysphagia and allow stricture remodeling.METHODS:A case series of four consecutive patients with complex hypopharyngeal strictures after combinedtherapy for laryngeal cancer,previously submitted to multiple sessions of dilation without lasting improvement,is presented.All patients underwent placement of a small diameter and unflared tracheobronchial SEPS.Main outcome measurements were improvement of dysphagia and avoiding of repeated dilation.RESULTS:The modified introducer system allowed an easy and technically successful deployment of the tracheobronchial Polyflex stent through the stricture.All four patients developed complications related to stent placement.Two patients had stent migration(one proximal and one distal),two patients developed phanryngocutaneous fistulas and all patients with stents in situ for more than 8 wk had hyperplastic tissue growth at the upper end of the stent.Stricture recurrence was observed at 4 wk follow-up after stent removal in all patients CONCLUSION:Although technically feasible,placement of a tracheobronchial SEPS is associated with a high risk of complications.Small diameter stents must be kept in place for longer than 3 mo to allow adequate time for stricture remodeling.

Snow Cover Variation and Streamflow Simulation in a Snow-fed River Basin of the Northwest Himalaya

Snowmelt is an important component of any snow-fed river system.The Jhelum River is one such transnational mountain river flowing through India and Pakistan.The basin is minimally glacierized and its discharge is largely governed by seasonal snow cover and snowmelt.Therefore,accurate estimation of seasonal snow cover dynamics and snowmeltinduced runoff is important for sustainable water resource management in the region.The present study looks into spatio-temporal variations of snow cover for past decade and stream flow simulation in the Jhelum River basin.Snow cover extent(SCE) was estimated using MODIS(Moderate Resolution Imaging Spectrometer) sensor imageries.Normalized Difference Snow Index(NDSI) algorithm was used to generate multi-temporal time series snow cover maps.The results indicate large variation in snow cover distribution pattern and decreasing trend in different sub-basins of the Jhelum River.The relationship between SCE-temperature,SCE-discharge and discharge-precipitation was analyzed for different seasons and shows strong correlation.For streamflow simulation of the entire Jhelum basin Snow melt Runoff Model(SRM) used.A good correlation was observed between simulated stream flow and in-situ discharge.The monthly discharge contribution from different sub-basins to the total discharge of the Jhelum River was estimated using a modified version of runoff model based on temperature-index approach developed for small watersheds.Stream power - an indicator of the erosive capability of streams was also calculated for different sub-basins.

Vehicle Operating, Accident and User Time Costs in Pavement Management Systems： Approach for Portuguese Conditions

This paper presents a description and analysis of the most important models to predict each of the Road User Costs components （Vehicle Operating Costs, Accident Costs and Value of Time） and proposes a model for estimating RUC components suitable for the Portuguese road network. These results are part of a research which aimed to obtain a Road User Cost Model to be used as a tool in road management systems. This model is different from other models by the fact that it includes a simple formulation that allows calibration and calculation of cost parameters, for any year, in a simple and fast way, providing trustworthy results. The required data is already available in Portuguese institutions, allowing periodic revision of cost parameters to insure accuracy.