读“馆标”有感

校图书馆以其简洁、流畅而雄厚的建筑风格，矗立在校园的中央。东墙上造型独特的“馆标”给图书馆又添上了浓重的一笔，引人注目。“馆标”以其丰富的内涵，激威着一批又一批莘莘学子日复一日，年复一年地在博太精深的图书馆吮吸着知识的乳汁。

Pelage color of red bats Lasiurus borealis varies with body size:An image analysis of museum specimens

Mammalian pelage color can vary among individuals of many species, although this intraspecific variation is oftenoverlooked by researchers, perhaps because of its sometimes subtle nature and difficulty in assessing it quantitatively. Thus, suchvariation is rarely studied in mammals, and this is especially true within the order Chiroptera, where there has been very little empiricalresearch. We examined museum specimens of red bats (Lasiurus borealis, family Vespertilionidae) from Georgia, USA, todetermine the extent of sexual dimorphism in pelage color and to explore possible associations between body size and pelagecolor. We photographed 54 specimens under uniform lighting, and used an image analysis program to measure pelage hue on theuropatagium region, which is fully furred in members of the genus Lasiurus. Statistical analyses of pelage hue scores showedmales had significantly redder pelage than females when considered alone, but when examined together with effects of body sizeand collection year, sex was not significant, and collection year and body size were. More recent specimens tended to be less redthan older specimens, which might indicate a wearing of the buffy tips of hairs from older specimens, and smaller bats of bothsexes tended to be more red. These interesting findings are encouraging and we suggest that future explorations into intraspecificvariation in pelage color of bats using this or similar approaches are warranted to clarify the significance of the patterns. Thisstudy also demonstrated that care must be taken in analyses of mammalian pelage color from older museum skins, or at least thatresearchers must take into account the age of the specimens .

Long term outcomes of drug-eluting stent versus coronary artery bypass grafting for left main coronary artery disease： a meta-analysis

Background It is still controversial whether percutaneous coronary intervention with drug-eluting stent （DES） is safe and effective compared to coronary artery bypass graft surgery （CABG） for unprotected left main coronary artery （ULMCA） disease at long-term follow up （≥3 years）. Methods Eligible studies were selected by searching PubMed, EMBASE, and Cochrane Library up to December 6, 2016. The primary endpoint was a composite of death, myocardial infarction （MI） or stroke during the longest follow-up. Death, cardiac death, MI, stroke and repeat revascularization were the secondary outcomes. Results Four randomized controlled trials and twelve adjusted observational studies involving 14,130 patients were included. DES was comparable to CABG regarding the occurrence of the primary endpoint （FIR = 0.94, 95% CI： 0.86-1.03）. Besides, DES was significantly associated with higher incidence of MI （HR = 1.56, 95% CI： 1.09-2.22） and repeat revascularization （HR = 3.09, 95% CI： 2.33-4.10） compared with CABG, while no difference was found between the two strategies regard as the rate of death, cardiac death and stroke. Furthermore, DES can reduce the risk of the composite endpoint of death, MI or stroke （HR = 0.80, 95% CI： 0.67-0.95） for ULMCA lesions with SYNTAX score ≤32. Conclusions Although with higher risk of repeat revascularization, PCI with DES appears to be as safe as CABG for ULMCA disease at long-term follow up. In addition, treatment with DES could be an alternative interventional strategy to CABG for ULMCA lesions with low to intermediate anatomic complexity.

The Effect of the Hot Springs at the Umm Qeis Archaeological Site and Museum

Several recent studies have pointed out that northern parts of Jordan are exposed to high levels of the effect of the hot spring, which is widely known to have severe impacts on health, vegetation and structures. North Jordan has a wealth of ancient heritage including six out of the ten Decapolis Cities. Air pollution that comes out from the hot springs is alleged to deteriorate and erode buildings, structures, statues and monuments through acid deposition. Therefore, this research was conducted to assess air quality at Gadara, the capital of the ancient Decapolis and suggest mitigation measures that have to be adopted in order to save the ancient heritage against further deterioration. Measurements revealed that most criteria air pollutants including sulfur dioxide, nitrogen dioxide and carbon monoxide attain corresponding national ambient air quality standards. Atmospheric concentrations of NO are strongly linked to the amount of 03. Simultaneous exposure to SO2 and NO2 demonstrated that a catalytic reaction takes place which increases the rate of sulphate production after 30 h exposure.

Service Model Transformation of the Standards Library in the Network Environment

In the network environment, changes of resources structure, information technology and users requirements of standards library cause series of problems such as unobvious effect of services, low efficiency of resource utilization, poor innovation ability, etc. And we point out the problems and challenges faced by traditional standards library in the network environment. The standards library must redesign the organization structure and business process radically so that standards library could improve the service model, enhance the service quality and utilization rate of various document resources.

Study on Control of Operation Cost on College Libraries

libraries are universally accepted as the symbols of college and every university invests large sum of money into libraries. According to the criteria in EUCT （Evaluation in Undergraduate Course Teaching）, college libraries should meet certain standards and the cost will be large. Given the current condition that governmental funding is inadequate, we have to control the cost by ourselves. Our solutions to cost control will focus on three aspects： manpower of stuffs, hardware of library and the maintenance of library.

Spatiotemporal variation in leaf size and shape in response to climate

Aims Morphological variation of leaves is a key indicator of plant response to climatic change.Leaf size and shape are associated with carbon,water and energy exchange of plants with their environment.However,whether and how leaf size and shape responded to climate change over the past decades remains poorly studied.Moreover,many studies have only explored inter-but not intraspecific variation in leaf size and shape across space and time.Methods We collected>6000 herbarium specimens spanning 98 years(1910–2008)in China for seven representative dicot species and measured their leaf length and width.We explored geographical patterns and temporal trends in leaf size(i.e.leaf length,leaf width and length×width product)and shape(i.e.length/width ratio),and investigated the effects of changes in precipitation and temperature over time and space on the variation in leaf size and shape.Important Findings After accounting for the effects of sampling time,leaf size decreased with latitude for all species combined,but the relationship varied among species.Leaf size and shape were positively correlated with temperature and precipitation across space.After accounting for the effects of sampling locations,leaf size of all species combined increased with time.Leaf size changes over time were mostly positively correlated with precipitation,whereas leaf shape changes were mostly correlated with temperature.Overall,our results indicate significant spatial and temporal intraspecific variation in leaf size and shape in response to climate.Our study also demonstrates that herbarium specimens collected over a considerable period of time provide a good resource to study the impacts of climate change on plant morphological traits.

A DEA MODEL FOR IDENTIFYING CRITICAL INPUT-OUTPUT PERFORMANCE MEASURES

In this paper,the authors propose a new model for identifying the critical input-output combinations for each DMU.A real-world application case of 21 international tourist hotels(ITHs) is used to illustrate the proposed approach.