简介：Inthisnote,theauthorprovesthattheinverseproblemofsubmodularfunctionondigraphswithl∞objectivefunctioncanbesolvedbystronglypolynomialalgorithm.Theresultshowsthatmostinversenetworkoptimizationproblemswithl∞objectivefunctioncanbesolvedinthepolynomialtime.

简介：ThepaperisasurveyontheactionofBergmantypeprojectionsonvariousLpspaces.Thefocusisonthreetypesofholomorphicfunctionspaces:weightedBergmanspaces,theBlochspace,anddiagonalBesovspaces.

简介：Thispapercontainsadetailed,selfcontainedandmorestreamlinedproofofthel~2decouplingtheoremforhypersurfacesfromthepaperofBourgainandDemeterin2015.TheauthorshopethiswillserveasagoodwarmupforthereadersinterestedinunderstandingtheproofofVinogradov'smeanvaluetheoremfromthepaperofBourgain,DemeterandGuthin2015.

简介：小班小朋友，在小鲤鱼跳龙门的画面中，声母d,t,n,l在哪里？把它们找出来并用笔涂上颜色。

简介：车型：2．0T,BPJ发动机,01J变速器。行驶里程：87320km。故障现象：加速不良，伴有加速抖动，动力不足。故障诊断：用VAS5052读取故障码：00135，显示燃油导轨压力过低。在读取数据流的时候，发现节气门开度已经超过正常，进行了清洗节气门和油路，试车，故障有好转。查询该车自第一次保养后就无正常的保养记录，已经行驶了87320km，

简介：摘要：纵观历年高考题，亦或是研究生入学考试题，我们不难发现，长难句所在之处都是我们相关题目的答案所在之处。可见，掌握长难句的分析方法就是助力阅读的关键所在。但与此同时，也是广大考生的问题及挑战所在。

简介：InthispaperitturnsoutthataBanachlatticeXisorderisomorphictol~1(Γ)forsomenonemptysetΓiffitisaSchurspaceandalltheinfinitelydimensional,separableandclosedidealsofXareorderisomorphic.

简介：摘要：本文以L网为案例分析的主要对象，解释L网内部控制结构中存在的问题，分析产生这些问题的背后原因，并提供关于建立和完善内部控制系统的建议，以期为其他公司内部控制的优化提升提供一定的参考。

简介：摘要：组织结构是企业管理存在的基础，是企业管理系统总体框架，是企业经营发展实现战略目标的载体和手段，承载着企业运营过程中各种流程的落地。如果企业的组织结构不能适应内外部环境，不能适应企业文化，不能适应企业战略、人员素质以及企业规模和企业生活周期及技术水平，将难以长久良性的经营和发展下去。本文以L公司组织结构作为研究对象，系统地分析了L公司现行组织结构运营过程中存在的问题及其原因，有针对的提出了取舍部门简化大组织结构、选择矩阵式组织结构优化品牌管理部门、销售大区选择事业部制组织结构提升区域管理水平等组织结构优化方案有效实施的保障措施，更好地适应环境变化、提升组织效率、促进企业健康良性发展。

简介：泰如片江淮方言中"V+L"和"V+在+L"结构都可用于表达某物存在于某处,但二者在构成条件、时体特征及构成祈使句的能力等方面存在着差异.这种差异是由两种结构中动词与处所词语之间"在"的有无决定的.此类"在"的主要功能不是引进处所,它的隐现具有表达"未然"和"已然"两种对立的时体意义的功能.

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简介：中国经济运行正必于L型走势的一横，即中高速增长阶段；同样，中国的商业模式的革新也正赵于活跃期。这两者并存是中国经济发展阶段的产物。中高速增长阶段比L型一竖以及一竖之前的高速增长时期对商业模式的变革更为有利，商业模式的变革也将对经济的中高速发展、而不是继续探底提供很好的支撑作用。当然，无论是经济中高速增长还是商业变革都需要全面深化改革的支持。

简介：NineteenL-N-2-hydroxyethylaminoacidsandL-N,N-bis(2-hydroxyethyl)aminoacidswerepreparedfromthereactionofchlorohydrinwithL-alanine,L-valine,L-leucine,L-isoleucine,L-phenylalanine,L-serine,L-thrcunine,L-glutamicacid,L-asparticacidandglycine.L-N,N,N’,N’-tetra(2-hydroxyethyl)cystinewaspreparedbythereactionofL-cystinewithchlorohydrin.

简介：AbstractObjective:To investigate the relationship between the concentration of L-carnitine in semen and sperm parameters and investigate the epigenetic profile in sperm cell after L-carnitine usage.Methods:From February 2017 to February 2018, 46 semen samples from asthenospermic males and 41 semen samples from healthy donors were acquired. Motility parameters were assessed using computer-assisted sperm analysis (CASA, n = 78) and the DNA fragmentation index (DFI) was evaluated through flow cytometry (n = 86), %DFI = % cells outside main population. Other oxidative stress markers, such as reactive oxygen species (ROS) levels (n = 86) and the mitochondria DNA copy numbers, were detected (n = 78). The concentration of L-carnitine and acetyl-L-carnitine was detected (n = 82), and methylation was analyzed (n = 30). After that, we collected 13 fresh semen samples from asthenospermic males and 23 fresh semen samples from healthy donors. These samples were used in a freeze-thaw model that was used to determine whether adding L-carnitine could change sperm progressive motility (n = 23), apoptosis index (n = 9), and methylation analysis (n = 7). In total, we have done 13 asthenospermia samples for Western blot, and except for the poor Western result, we analyzed 6 samples for H3K9ac detection, 7 samples for H3K9m3 and H3K27m3 detection, and immunofluorescence (n = 3). Finally, we had recruited 30 volunteers, and they were given oral administration of L-carnitine for 3 months and then collected semen samples at different time points for methylation analysis.Results:The concentration of acetyl-L-carnitine is negatively correlated with the %DFI value (r2 = 0.1090; P = 0.0026), and the concentration of acetyl-L-carnitine is positively correlated with sperm forward motility (r2 = 0.0543; P = 0.0458) and ROS (r2 = 0.1854; P < 0.0001), and the acetyl-L-carnitine level is negatively correlated with %DFI in asthenospermia (r2 = 0.1701; P = 0.0066), and the level of acetyl-L-carnitine in asthenospermic semen is significantly lower than the normal group (P = 0.0419). In addition, this study indicates that adding L-carnitine significantly improved sperm motility (P = 0.0325) and reduced sperm apoptosis (P = 0.0032). Importantly, Western blotting (P = 0.0429) and immunofluorescence staining results showed that the addition of L-carnitine reduced H3K9Me3 methylation level in sperm, respectively. Furthermore, semen samples from asthenospermic patients had reduced methylation levels in a specific region (16thP= 0.0003; 17thP= 0.0016) of the brain-derived neurotrophic factor (BDNF) promoter. The 16th methylation decreased with age (r2 = 0.1564; P = 0.0306), and the 17th methylation was decreased after treatment with L-carnitine for 28 days (P = 0.0341).Conclusion:L-carnitine can reduce the %DFI and also affect the methylation of the histone modification marker in sperm as a possible epigenetic regulator.

简介：令Vn=span{1,2,…,n},设函数f∈Lp[E,μ],1≤p<∞,在点p处定义一个最佳Lp逼近算子τ∫（p）。记Nf（p）=∥f-τ∫（p）∥p=inf/Q∈Vn∥f-Q∥po本文证明了Nf（p）/[μ（E）]l/p是p的单调增加且有界的函数。如果f∈L∞[E,μ],则存在τ∫（∞）∈Vn,使得∥f-τ∫（∞）∥∞=inf/Q∈Vn∥f-Q∥∞,并且给出了最佳逼近值。

简介：GivenacontinuousfunctionfdefinedontheunitcubeofRnandaconvexfunctiont,t（0）-0,t（x）>0,forx>0,weprovethatthesetofbestLt-approximationsbymonotonefunctionshasexactlyoneelementft,whichisalsoacontinuousfunction.Moreoverifthefamilyofconvexfunctions{t}t>0convergesuniformlyoncompactsetstoafunction0,thenthebestapproximationft→f0uniformly,ast→0,wherefoisthebestapproximationoffwithintheOrliczspaceL0Thebestapproxima-tions{ft}areobtainedaswellasminimizingintegralsortheLuxemburgnorm

简介：长城显示器2008年进入三甲并非偶然，而是必然，即便遇到全球性的经济危机，但是长城显示器前进的脚步并没有停止，逆市上涨的秘密是什么？不外乎两个条件：过硬的产品，低廉的价格。

简介：AcharacteristicoftheextendedCarlesonmeasureexpressedbythederivativesofLpfunctionsinRn+1+isobtained.

简介：让Sq-1，q≥2，联合起来的范围的表面在欧几里德几何学的spaceRq，f(x)∈Lp(Sq-1)，f(x)≥0，f吗？0，1≤p≤+∞。然后，它在现在的纸被证明有顺序≤N和经常的C>的球形的泛音PN(x)0以便‖f-1/P_N‖L_p≤Cω(f,N~(-1))Lp,在哪儿ω(f，吗δ)Lp=sup_(0

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