mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Dynamic stability enhancement of interconnected multi-source power systems using hierarchical ANFIS controller-TCSC based on multi-objective PSO

Suppression of the dynamic oscillations of tie-line power exchanges and frequency in the affected interconnected power systems due to loading-condition changes has been assigned as a prominent duty of automatic generation control(AGC). To alleviate the system oscillation resulting from such load changes, implementation of flexible AC transmission systems(FACTSs)can be considered as one of the practical and effective solutions. In this paper, a thyristor-controlled series compensator(TCSC), which is one series type of the FACTS family, is used to augment the overall dynamic performance of a multi-area multi-source interconnected power system. To this end, we have used a hierarchical adaptive neuro-fuzzy inference system controller-TCSC(HANFISC-TCSC)to abate the two important issues in multi-area interconnected power systems, i.e., low-frequency oscillations and tie-line power exchange deviations. For this purpose, a multi-objective optimization technique is inevitable. Multi-objective particle swarm optimization(MOPSO)has been chosen for this optimization problem, owing to its high performance in untangling non-linear objectives. The efficiency of the suggested HANFISC-TCSC has been precisely evaluated and compared with that of the conventional MOPSO-TCSC in two different multi-area interconnected power systems, i.e., two-area hydro-thermal-diesel and three-area hydro-thermal power systems. The simulation results obtained from both power systems have transparently certified the high performance of HANFISC-TCSC compared to the conventional MOPSO-TCSC.
A new variable-mode control strategy for LLC resonant converters operating in a wide input voltage range

This paper proposes a new variable-mode control strategy that is applicable for LLC resonant converters operating in a wide input voltage range. This control strategy incorporates advantages from full-bridge LLC resonant converters, half-bridge LLC resonant converters, variable-frequency control mode, and phase-shift control mode. Under this control strategy, different input voltages determine the different operating modes of the circuit. When the input voltage is very low, it works in a full-bridge circuit and variable frequency mode(FB_VF mode). When the input voltage rises to a certain level, it shifts to a full-bridge circuit and phase-shifting control mode(FB_PS mode). When the input voltage further increases, it shifts into a half-bridge circuit and variable frequency mode(HB_VF mode). Such shifts are enabled by the digital signal processor(DSP), which means that no auxiliary circuit is needed, just a modification of the software. From light load to heavy load, the primary MOSFET for the LLC resonant converter can realize zero-voltage switching(ZVS), and the secondary rectifier diode can realize zero-current switching(ZCS). With an LLC resonant converter prototype with a 300 W rated power and a 450 V output voltage, as well as a resonant converter with 20-120 V input voltage, the experiments verified the proposed control strategy. Experimental results showed that under this control strategy, the maximum converter efficiency reaches 95.7% and the range of the input voltage expands threefold.
A quality requirements model and verification approach for system of systems based on description logic

System of systems engineering(SoSE)involves the complex procedure of translating capability needs into the high-level requirements for system of systems(SoS)and evaluating how the SoS quality requirements meet their capability needs. One of the key issues is to model the SoS requirements and automate the verification procedure. To solve the problem of modeling and verification, meta-models are proposed to refine both functional and non-functional characteristics of the SoS requirements. A domain-specific modeling language is defined by extending Unified Modeling Language(UML)class and association with fuzzy constructs to model the vague and uncertain concepts of the SoS quality requirements. The efficiency evaluation function of the cloud model is introduced to evaluate the efficiency of the SoS quality requirements. Then a concise algorithm transforms the fuzzy UML models into the description logic(DL)ontology so that the verification can be automated with a DL reasoner. This method implements modeling and verification of high-level SoS quality requirements. A crisp case is used to facilitate and demonstrate the correctness and feasibility of this method.
Projection of China's Near- and Long-Term Climate in a New High-Resolution Daily Downscaled Dataset NEX-GDDP

The projection of China's near- and long-term future climate is revisited with a new-generation statistically downscaled dataset, NEX-GDDP (NASA Earth Exchange Global Daily Downscaled Projections). This dataset presents a high-resolution seamless climate projection from 1950 to 2100 by combining observations and GCM results, and remarkably improves CMIP5 hindcasts and projections from large scale to regional-to-local scales with an unchanged long-term trend. Three aspects are significantly improved: (1) the climatology in the past as compared against the observations; (2) more reliable near- and long-term projections, with a modified range of absolute value and reduced inter-model spread as compared to CMIP5 GCMs; and (3) much added value at regional-to-local scales compared to GCM outputs. NEX-GDDP has great potential to become a widely-used high-resolution dataset and a benchmark of modern climate change for diverse earth science communities.
Amplification of the Solar Signal in the Summer Monsoon Rainband in China by Synergistic Actions of Different Dynamical Responses

A rainband meridional shift index (RMSI) is defined and used to statistically prove that the East Asian summer monsoon rainband is usually significantly more northward in the early summer of solar maximum years than that of solar minimum years. By applying continuous wavelet transform, cross wavelet transform, and wavelet coherence, it is found that throughout most of the 20th century, the significant decadal oscillations of sunspot number (SSN) and the RMSI are phase-locked and since the 1960s, the SSN has led the RMSI slightly by approximately 1.4 yr. Wind and Eliassen-Palm (EP) flux analysis shows that the decadal meridional oscillation of the June rainband likely results from both a stronger or earlier onset of the tropical monsoon and poleward shift of the subtropical westerly jet in high-solar months of May and June. The dynamical responses of the lower tropical monsoon and the upper subtropical westerly jet to the 11-yr solar cycle transmit bottom-up and top-down solar signals, respectively, and the synergistic actions between the monsoon and the jet likely amplify the solar signal at the northern boundary of the monsoon to some extent.
Effects of dietary protein restriction on muscle fiber characteristics and mTORC1 pathway in the skeletal muscle of growing-finishing pigs

Background: To investigate the effects of dietary crude protein (CP) restriction on muscle fiber characteristics and key regulators related to protein deposition in skeletal muscle, a total of 18 growing-finishing pigs (62.30 ± 0.88 kg) were allotted to 3 groups and fed with the recommended adequate protein (AP, 16 % CP) diet, moderately restricted protein (MP, 13 % CP) diet and low protein (LP, 10 % CP) diet, respectively. The skeletal muscle of different locations in pigs, including longissimus dorsi muscle (LDM), psoas major muscle (PMM) and biceps femoris muscle (BFM) were collected and analyzed. Results: Results showed that growing-finishing pigs fed the MP or AP diet improved (P < 0.01) the average daily gain and feed: gain ratio compared with those fed the LP diet, and the MP diet tended to increase (P = 0.09) the weight of LDM. Moreover, the ATP content and energy charge value were varied among muscle samples from different locations of pigs fed the reduced protein diets. We also observed that pigs fed the MP diet up-regulated (P < 0.05) muscular mRNA expression of all the selected key genes, except that myosin heavy chain (MyHC) IIb, MyHC IIx, while mRNA expression of ubiquitin ligases genes was not affected by dietary CP level. Additionally, the activation of mammalian target of rapamycin complex 1 (mTORC1) pathway was stimulated (P < 0.05) in skeletal muscle of the pigs fed the MP or AP diet compared with those fed the LP diet. Conclusion: The results suggest that the pigs fed the MP diet could catch up to the growth performance and the LDM weight of the pigs fed the AP diet, and the underlying mechanism may be partly due to the alteration in energy status, modulation of muscle fiber characteristics and mTORC1 activation as well as its downstream effectors in skeletal muscle of different locations in growing-finishing pigs.
Resveratrol compares with melatonin in improving in vitro porcine oocyte maturation under heat stress

Background: Resveratrol, an important phyto-antioxidant commonly found in grapes, mulberry, and other plants, has a variety of functions including anti-aging, anti-cancer and anti-inflammatory activities. In the current study, we investigated the beneficial effects of resveratrol on in vitro porcine oocyte maturation under heat stress (HS). The effect of resveratrol, melatonin and their combination on alleviating HS was compared according to the maturation rate of oocytes and the development competence of embryos after parthenogenetic activation (PA). Results: Supplementation with resveratrol (2.0 μmol/L) not only improved the nuclear maturation but also raised the blastocyst rate of porcine embryos' PA from oocytes that underwent HS by increasing their glutathione (GSH) level, reducing reactive oxygen species (ROS) and up-regulating the expression of Sirtuin 1 (SIRT1). It was also found that melatonin (10~(-7) mol/L) and the combination of resveratrol (2.0 μmol/L) plus melatonin (10~(-7) mol/L) exhibited more potent effects than resveratrol alone regarding their protective activities on oocyte maturation under HS. Conclusions: This study compared the efficiencies of resveratrol, melatonin and their combination for protecting porcine oocytes from heat stress. The mechanisms are attributed to the fact that each treatment may have different ability to regulate the synthesis of steroid hormones and the expression of mature related genes.
Cosmological parameters for spatially flat dust filled Universe in Brans-Dicke theory

We have investigated late time acceleration for a spatially flat dust filled Universe in Brans- Dicke theory in the presence of a positive cosmological constant Λ. Expressions for Hubble's constant, luminosity distance and apparent magnitude have been obtained for our model. The theoretical results are compared with observed values of the latest 287 high redshift (0.3 ≤ z ≤ 1.4) Type Ia supernova data taken from the Union 2.1 compilation to estimate present values of matter and dark energy parameters, (?_m)_0 and (?_Λ)_0.We have also estimated the present value of Hubble's constant H_0 in light of an updated sample of Hubble parameter measurements including 19 independent data points. The results are found to be in good agreement with recent astrophysical observations. We also calculated various physical parameters such as matter and dark energy densities, present age of the Universe and deceleration parameter. The value for Brans-Dicke-coupling constant ω is set to be 40 000 based on accuracy of solar system tests and recent experimental evidence.
Numerical model for homogeneous cohesive dam breaching due to overtopping failure

Based on the large-scale model tests, a simplified dam breach model for homogeneous cohesive dam due to overtopping failure is put forward. The model considers headcut erosion as one of the key homogeneous cohesive dam breaching mechanisms and we calculate the time-averaged headcut migration rate using an energy-based empirical formula. A numerical method is adopted to determine the initial scour position at the downstream slope in terms of the water head and dam height, and the broad-crested weir equation is utilized to simulate the breach flow. The limit equilibrium method is used to analyze the stability of breach slope during the breach process. An iterative method is developed to simulate the coupling process of soil and water at each time step. The calculated results of three dam breach cases testify the reasonability of the model, and the sensitivity studies of soil erodibility show that sensitivity is dependent on each test case's soil conditions. In addition, three typical dam breach models, NWS BREACH, WinDAM B, and HR BREACH, are also chosen to compare with the proposed model. It is found that NWS BREACH may have large errors for cohesive dams, since it uses a noncohesive sediment transport model and does not consider headcut erosion, WinDAM B and HR BREACH consider headcut erosion as the breaching mechanism and handle well homogeneous cohesive dam overtopping failure, but overall, the proposed model has the best performance.
盆底重建手术网片相关并发症的预防与处理

妇女一生中有11%~19%的风险行盆底修复手术,而盆腔器官脱垂(pelvic organ prolapse,POP)传统修复手术是在已经薄弱和缺陷的筋膜、结缔组织及韧带上进行悬吊和修补,再次手术的风险高。近年来使用移植物尤其是合成网片的盆底重建手术降低了传统修复手术的复发率,改善了压力性尿失禁(stress urinary incontinence,SUI)和POP患者的生活质量。但与网片及合成材料吊带相关的并发症如网片暴露、侵蚀,收缩(导致阴道变短和变窄)的一些并发症也逐渐增加。Colpopexy and Urinary Reduction Efforts (CARE)为评估322例患者行骶骨阴道固定术网片和缝合侵蚀率的研究,7年的延伸研究中,至少有16.7%的患者因为盆底功能障碍需要再次手术,5.1%因为脱垂复发,6.5%因为SUI,5.1%因为网片并发症。北京大学人民医院妇产科回顾性分析了2007年至2014年因盆底手术后出现网片或吊带相关疼痛的12例患者,其中9例行网片部分切除,1例行吊带完全切除,1例行网片全部切除,1例行分离松解,手术改善了网片相关疼痛的症状。尽管在自身组织修复的盆底手术也有类似的并发症,但移植物相关的并发症更严重,处理也更困难。
Practical Diagnostic Criterion of Blood Stasis Syndrome

The study of "Practical Diagnostic Criterion of Blood Stasis Syndrome(PDCBSS)" was supported by the National Key Science and Technology Program-Clinical Experience and Academic Idea Research of Famous Doctors(Prof. CHEN Ke-ji)of Traditional Chinese Medicine(TCM)during the Twelfth Five-Year Plan period(No. 2013BAI13B01). It was developed on the basis of literature review, case analyses, qualitative interviews and referring to Practical Diagnostic Criterion of Blood Stasis Syndrome(BSS, Table 1). According to the consistency test, PDCBSS presented a good consistency when used by different researchers. Bayesian estimation suggested that PDCBSS had higher sensitivity but similar specificity as compared with "BSS Diagnostic Criterion in 1986" or "Consensus of Integrative Medicine on BSS Diagnosis and Treatment in 2011.
Characteristic Analysis of Underwater Acoustic Scattering Echoes in the Wavelet Transform Domain

Underwater acoustic scattering echoes have time-space structures and are aliasing in time and frequency domains. Different series of echoes properties are not identified when incident angle is unknown. This article investigates variations in target echoes of monostatic sonar to address this problem. The mother wavelet with similar structures has been proposed on the basis of preprocessing signal waveform using matched filter, and the theoretical expressions between delay factor and incident angle are derived in the wavelet domain. Analysis of simulation data and experimental results in free-field pool show that this method can effectively separate geometrical scattering components of target echoes. The time delay estimation obtained from geometrical echoes at a single angle is consistent with target geometrical features, which provides a basis for object recognition without angle information. The findings provide valuable insights for analyzing elastic scattering echoes in actual ocean environment.
Six 38.7 W pulses in a burst of pulse-burst picosecond 1064 nm laser system at 1 kHz

A burst of six pulses with an average power of 38.7 W are obtained for a pulse-burst picosecond 1064 nm laser system at 1 kHz. The six pulses have equal amplitudes and pulse spacings of 800 ps, the beam quality of the M~2 factor is less than 2,and the pulse width is 67 ps. Seed pulses are broadened from 22 to 136 ps by single-pass volume Bragg gratings. A laser-diode end-pump Nd:YVO_4 beam-splitting amplifier is used to divide and amplify a single pulse into six pulses. An Nd:YAG regenerative amplifier and a single-pass high-gain amplifier are applied.
术后慢性疼痛相关炎症反应与免疫调节机制研究进展

术后慢性疼痛具有发病率高、持续时间长、发病机制复杂等特点,严重影响病人的生活质量。手术所致神经病理性损伤是术后慢性疼痛发生的重要机制。与此同时,手术损伤所致神经系统的过度炎症反应和免疫调节机制亦加快术后慢性疼痛的形成。在术后慢性疼痛的发生发展过程中,神经损伤、坏死组织炎症反应和/或感染均可导致外周神经、DRG及脊髓背角中多种免疫细胞及胶质细胞活化,产生多种促炎症细胞因子和趋化因子,导致组织微环境中促炎症细胞因子和抗炎症细胞因子的比例失衡,外周和中枢神经元兴奋阈值下降,神经元兴奋性提高,发生痛觉敏化。本文主要综述术后神经系统炎症反应与免疫调节所致术后慢性疼痛的相关机制。
假双着丝粒染色体九例

讨论生殖异常包括流产、死产、胚胎停止发育、生育缺陷儿、不孕不育、男性无精及少弱精等。发育异常有身材矮小、智力低下以及原发闭经、第二性征发育不良等症状。导致生殖、发育异常的病因较为复杂,其中最重要的原因为染色体异常。染色体异常携带者在生殖细胞减数分裂过程中可产生遗传物质缺失或重复的不平衡配子,从而导致自然流产、胚胎停育、死胎、死产、生育染色体异常儿等。c显带证实,假双着丝粒染色体(pseudodicentric chromosome,psu dic)中有呈现缢痕形态正常的着丝粒,而另一着丝粒是失活的,不呈现缢痕,仅表现为染色质。其着丝粒失活可能和着丝粒复制不全有关。本文9例患者均为psu dic,其中例1及例2表现为原发闭经、第二性征发育不良。例3之妻、例4、例5、例6及例8之母亲均有不良孕产史,例9患不育症,印证了上述观点。
小儿四指缺损再造一例

小儿手指再造术后,应向家属交代好功能锻炼的重要性。让家长和患儿积极配合,通过系统的康复锻炼恢复再造指功能。儿童生性好动,易功能康复,术后康复分早期、中期和后期。术后 4周内,骨骼肌腱未愈合,活动度不宜过大,治疗以创口愈合、消肿为主。中期4周到3个月,治疗以主动和被动活动为主,要循序渐进,同时辅以蜡疗、手法、器械治疗等措施。后期指3个月以后,根据功能恢复情况,必要时进行瘢痕等肌腱松解手术治疗。
中国足趾移植拇手指再造的发展与提高

1966年,上海华山医院在杨东岳教授带领及中山医院外科协作下,应用显微外科技术利用第二足趾移植施行拇指再造获得成功,为我国及国际利用第二足趾移植再造拇、手指开创了先例。1977年《中华外科杂志》发表了杨东岳等“第二趾游离移植再造拇指40例报告”,1978年由陈中伟、杨东岳、张涤生等编著的《显微外科》,杨东岳教授撰写的“足趾移植拇手指再造”章节为我国学者开展第二足趾移植再造拇、手指提供了新的方法与经验。中国的足趾移植再造拇、手指与修复已经历了50年,再造理念与适应证、再造技术与方法均有了新的改进、发展与提高。为纪念杨东岳教授开创足趾移植拇、手指再造50周年,笔者向国内28家医院征集有关足趾移植拇、手指再造与修复相关资料,收到23家医院回复,其中16家医院提供PPT临床资料,结合我院资料,2016年5月在青岛召开的中华医学会第十三届手外科学术会议上笔者做“中国足趾移植拇手指再造发展与提高”的演讲,受到与会好评。应《中华显微外科杂志》编辑部汪华侨主任之约及贵刊创刊40周年,笔者整理了有关材料和PPT演讲内容,供同道参考指正。
腹壁上动脉血管推进距离对大鼠穿支皮瓣成活的影响

目的探讨皮瓣推进距离对大鼠穿支皮瓣成活以及血管的影响。方法2016年3月至2016年4月,取50只雄性大鼠,采用大白鼠腹壁上动脉穿支皮瓣模型,按照穿支长度与推进距离之间的比例(R_(PLAD))为1.0:0.5、1.0:1.0、1.0:1.2和1.0:0(原位缝合)进行手术。术后大体观察皮瓣成活状况及并发症情况,并于7d时测量皮瓣成活面积,计算百分比;激光多普勒血流仪分析为皮瓣供血的穿支血流情况;动物处死后,取皮瓣组织进行苏木素-伊红(HE)染色,组织学分析,测量微血管密度(MVD)值,以确定穿支长度与推进距离之间的最佳比例,并作统计学分析。结果术后7d,R_(PL:AD)=1:0大鼠皮瓣出现不同程度坏死.R(PL:AD)=1.0:0.5、1.0:1.0和1.0:1.2的实验组大鼠皮瓣存活率均有提高(P<0.01),且R_(PL:AD)=1.0:1.2组皮瓣存活率达(99.:55±2.89)%。组织学分析发现,与R(PL:AD)=1.0:0组比较,R_(PL:AD)=1.0:0.5、1.0、1.0:1.2组的炎症细胞减少,新生血管显著增多(P<0.05)。结论大鼠腹壁上动脉穿支皮瓣R_(PL:AD)=1.0:1.2为最佳比例。
周围神经长段缺损桥接修复的相关因素

近年来,因交通、生产事故等意外创伤引起的周围神经缺损性损伤已很常见。在许多情况下,这种缺损不能直接缝合,须依靠神经移植或各种代用品桥接才能修复。尤其对于长段的周围神经缺损,目前的临床修复方法还难以使缺损神经达到理想、满意的解剖和功能恢复。此外,在一些临床研究报告、临床文献描述、研究项目的指标、指南和项目技术方案中,也频繁出现“周围神经长段缺损修复”的概念,相关的困惑与问题源此而生。究竟长段缺损的准确定义是什么?长段缺损性损伤的再生修复有何规律和特点?如何提升长段缺损的临床疗效?本文通过查阅国、内外相关文献,就其概念、影响因素、临床常用修复方法及相关基础研究等内容进行思考与讨论,以期加深对周围神经长段缺损相关因素的认识。
“亚健康-体质-证候”关系轴应用思路初探

通过对亚健康状态体质和证候的总结,初步梳理出对亚健康状态中医干预的基本思路,对比分析疾病状态下体质与证候的规律,进而探讨“亚健康-体质-证候”关系轴应用思路。认为健康、体质、亚健康、疾病、证候等状态是一个交叉变化的过程,通过横向对比建立“亚健康-体质-证候”关系轴从而揭示生命活动的内在规律。
穿山龙中薯蓣皂苷酶提取工艺的优化

目的优化穿山龙中薯蓣皂苷酶提取工艺。方法以薯蓣皂苷提取率为评价指标,单因素试验考察酶解时间、酶解温度、酶解pH、液料比、提取时间、提取温度、乙醇体积分数,再通过响应面法优化提取工艺。结果最佳条件为酶解温度44 ℃,酶解pH 4.9,酶解时间1.9 h,液料比9: 1,薯蓣皂苷提取率为4.757%,与预测值(4.764%)接近。结论该方法合理、准确、可靠,可用于酶提取穿山龙中的薯蓣皂苷。
HPLC结合LC-MS /MS法快速检测穿山甲中掺加的12种黄色色素

目的通过HPLC结合LC-MS /MS法快速检测穿山甲Manis Squama中掺加的12种黄色色素(柠檬黄、日落黄、酸性橙10、栀子黄、碱性嫩黄O、碱性橙21、碱性橙2、酸性橙2、皂黄、碱性橙22、酸性嫩黄G、奶油黄) 。方法穿山甲70%甲醇提取液的HPLC分析采用Agilent Poroshell 120 EC C18色谱柱(100 mm × 4.6 mm,2.7 μm,亚3 μm核壳填料);以甲醇-乙酸铵为流动相,梯度洗脱;柱温40 ℃;体积流量1.0 mL/min;检测波长450 nm。再通过LCMS/MS法进行验证。结果各色素在各自范围内均呈良好的线性关系(r≥0.999 0),平均加样回收率76.9% ~ 103.7%,RSD 2.0% ~ 9.5%。60批样品中有1批掺加了栀子黄。结论该方法准确灵敏,可用于快速检测穿山甲中掺加的黄色色素。
喜炎平注射液与利巴韦林治疗小儿急性上呼吸道感染疗效的Meta分析

目的系统评价喜炎平注射液与利巴韦林治疗小儿急性上呼吸道感染的临床效果。方法检索时限均为1980年1月至2016年7月1日,系统检索CBM、CNKI、VIP、EMbase、Cochrane图书馆、PubMed、万方文献数据库以及WHO世界卫生组织国际临床试验注册平台,搜集所有喜炎平注射液与利巴韦林治疗小儿急性上呼吸道感染的随机对照试验(RCTs)并纳入研究。由2个研究员独立对检索的文献进行筛选、数据提取,应用RevMan5.3进行Meta分析。结果本研究共纳入15个临床RCTs,共2 457例患者。Meta分析结果显示,喜炎平注射液在总有效率[OR = 5.88,95% CI (4.44,7.80) ]、发热消失时间[MD =-0.69,95% CI = (-0.94,-0.44),P < 0.000 01]、咳嗽停止时间[MD =-1.48,95% CI (-2.14,-0.82),P < 0.000 01]以及咽部充血消失时间[MD =-1.30,95% CI (-2.21,-0.39),P < 0.000 01]等方面优于对照组。结论喜炎平注射液治疗急性上呼吸道感染小儿患者的临床疗效优于利巴韦林。
原儿茶酸在大鼠体内代谢产物的分析

目的分析原儿茶酸在大鼠体内的代谢产物。方法大鼠灌胃原儿茶酸-0.5%羧甲基纤维素钠混悬液后,通过超高效液相色谱-四极杆飞行时间质谱(UPLC-QTOF/MS)法分析该成分在大鼠血浆、尿液、胆汁、粪便中的代谢产物。结果在大鼠血浆、尿液、胆汁中,分别发现了9、4、1个原儿茶酸代谢产物,而粪便中未发现。结论原儿茶酸在大鼠体内吸收入血代谢,不经粪便原形排出。
Experience Availability: Tail-Latency Oriented Availability in Software-Defined Cloud Computing

Resource sharing, multi-tenant interference and bursty workloads in cloud computing lead to high tail-latency that severely affects user quality of experience (QoE), where response latency is a critical factor. A lot of research efforts are dedicated to reducing high tail-latency and improving user QoE, such as software-defined cloud computing (SDC). However, the traditional availability analysis of cloud computing captures the pure failure-repair behavior with user QoE ignored. In this paper, we propose a conceptual framework, experience availability, to properly assess the effectiveness of SDC while taking into account both availability and response latency simultaneously. We review the related work on availability models and methods of cloud systems, and discuss open problems for evaluating experience availability in SDC. We also show some of our preliminary results to demonstrate the feasibility of our ideas.
降低大容积脑出血病死率需要共识

自发性脑出血(intracerebral hemorrhage, ICH)患者在发病早期出现局限性神经功能缺损伴意识障碍、瞳孔不等大、呼吸节律异常,头CT扫描显示幕上血肿容积≥30 ml、桥脑血肿容积≥5 ml、丘脑或小脑血肿≥15 ml,称为大容积ICH (larger volume of intracerebral hemorrhage,LICH)。神经科医师和神经重症医师面对LICH患者,首先想到的是:怎样才能使患者存活下来。有研究表明:经内科治疗的幕上LICH患者病死率高达74% ~ 91% ,小脑LICH患者病死率为81% ,桥脑LICH患者病死率达到100%。高病死率的直接致死原因是脑疝形成。因此,如何清除血肿,减轻占位效应,减少脑疝形成,成为降低LICH病死率的关键。
大脑半球大面积梗死监护与治疗中国专家共识

大脑半球大面积梗死(large hemispheric infarction,LHI)是大脑中动脉供血区域≥2/3的梗死,伴或不伴大脑前动脉/大脑后动脉供血区域梗死。LHI发病率为(10~20)/10万人·年。LHI 患者临床表现为偏瘫、偏身感觉障碍、偏盲、凝视障碍、头眼分离和失语(优势半球)。如果LHI患者发病早期神经功能缺失和意识障碍进行性加重,并迅速出现脑疝,则称为恶性大脑中动脉梗死(malignant middle cerebral artery infarction, MMI)。MMI病死率高达60.9% ~78%,死亡原因多为脑疝形成。即便患者存活,也将遗留严重神经功能残疾(改良Rankin评分4 ~5分占43% ~ 89%)。神经科医师必须尽早识别LHI,在有条件的情况下,尽早将患者收入神经重症监护病房(neuro-intensive care unit,NCU),予以监护与治疗。
Two-Point Resistance of a Non-Regular Cylindrical Network with a Zero Resistor Axis and Two Arbitrary Boundaries

We study a problem of two-point resistance in a non-regular m×n cylindrical network with a zero resistor axis and two arbitrary boundaries by means of the Recursion-Transform method. This is a new problem never solved before, the Green's function technique and the Laplacian matrix approach are invalid in this case. A disordered network with arbitrary boundaries is a basic model in many physical systems or real world systems, however looking for the exact calculation of the resistance of a binary resistor network is important but difficult in the case of the arbitrary boundaries, the boundary is like a wall or trap which affects the behavior of finite network. In this paper we obtain a general resistance formula of a non-regular m×n cylindrical network, which is composed of a single summation. Further, the current distribution is given explicitly as a byproduct of the method. As applications, several interesting results are derived by making special cases from the general formula.
四川广汉发现长嘴半蹼鹬和短尾贼鸥

近年来在四川省广汉市鸭子河湿地自然保护区先后记录到长嘴半蹼鹬(Limnodromus scolopaceus)和短尾贼鸥(Stercorarius parasiticus)两种鸟类。经查阅相关文献(李桂垣1995,郑光美2011),这两种鸟类应属四川省鸟类新纪录。