The distribution of iron species in PFC solution as a functi

有没有人能帮帮小弟 Q1:the mean of the probability distribution of the sample mean is A) A static B
Q1:the mean of the probability distribution of the sample mean is
A) A static B) a random variable C) a parameter D) always equal to sample mean
Q2:A sampling distribution is defined as the probability distribution
A) of possible sample sizes that can be observed from a given population
B) of the values of a statics based on samples of a given size from a given population.
C) Of a population parameter based on independent,random sampling of observations from the population distribution.
D) Of the values of a statistic based on different-sized samples taken from the population distribution.
Q3:For a normal population,an increase in sample size has an effect primarily on which property of the sampling distribution of the sample mean:
a) Dispersion b) Kurtosis C) skewness D) central tendency

Error:magnitude distribution total for shower '' is more than the observed number of meteors for t

为什么这个是Z-distribution而不是T-distribution?
Z-distribution是说当population standard deviation is unknown,那么这题中的4.2 明明是sample 的而不是population的 为什么要用Z-distribution呢?不是应该先算出unbiased estimate of population S（n-1）再用T-distribution吗.
为什么明明不是population的还要用Z?

For a certain distribution,the measurement 12.1 is 1.5 standard deviations below the mean,and the measurement 17.5 is 3.0 standard deviations above the mean.What is the mean of the distribution?
A) 13.8 B) 13.9 C)14.0 D) 14.1 E) 14.2

英语翻译
in this figure,we can see that the distribution of Θ***5; has
a linear relationship with the cyclic phase.therefore,in the
sequential detection,it is possible that the detector estimates
the cyclic phase in each step of sequential detection,if it takes
Θ***5; as well as ?***5; as the observation.if the detector has some
knowledge about the cyclic phase,it can better distinguish the
soi-present hypothesis from the noise-only hypothesis,and
therefore,the detection performance can be improved.this
is the way to achieve a sufficient performance gain,which
is expected with sequential detection.therefore,we propose
the mh-sscd,which estimates not only the soi presence but
also the cyclic phase by taking the vector observation (?***5; ,Θ***5;).
it is noted that the soi presence and the cyclic phase is jointly
estimated in each sequential detection step.it is noted also that
the final goal of mh-sscd is still deciding the soi presence,
and the estimation of cyclic phase just assists it.

求救 一道英文计算题!
Generate 100 draws of a normal distribution with mean 10 and variance 4
what are the mean and variance of these draws?comment

英文论文语句解释
Third, we find that the distribution of both measures follows a Fre´ chet-type distribution
characterized by a broad tail of a few exceptionally fit mutants.
这句话怎么翻译.

英语翻译
The content of galactose and the distribution of galactose residues in the galactomannan can have a significant influence on the interaction properties with xanthan gum molecules .Maximum synergism is obtained when xanthan gum galactomannan mixtures are heated above the order-disorder transition temperature of xanthan gum .In salt solutions the synergistic effect is somewhat smaller as salt stabilizes the ordered conformation of xanthan gum synergism.
Of particular interest is the system xanthan gum lovust bean gum because a firm ,rubbery ,thermoreversible gel is formed through the mixture of two 'non-gelling' compinents.
Mixtures of xanthan gum -guar gum do not usually gel but show significantly enhanced viscosities compared to the viscosities of the sole components.
Synergistic interactions also take place between starch and xanthan gum under the conditions of cooking extrusion .These extrudates were shown to be aduantageous in srveral bakery products in order to obtain increased moisture retention.
Undrt certain conditions the thermal stability of xanthan gum against hydrolysis is superior to many other water-soluble polysaccharides or polymers in general .It is believed that the helical structure of xanthan gum in its ordered form protects the molecule from depolymerization.The viscosity of xanthan gum solutions is only minimally affected by heat treatment steps during processing ,e.g.sterilization.

英语翻译
Lost & Found
Has the productivity in your distribution center been languishing or even declining?Have you tried worker incentives,mechanization/automation,and new procedures with limited success?If so,it may be time to investigate slotting.Forget the old saw that only huge DCs can benefit from or afford a slotting system.Wider availability of software has brought this optimization process within the reach of even small facilities.
Inventory slotting or profiling is the process of identifying the most efficient placement for each item in a distribution center.Since each warehouse is different,proper slotting depends on a facility’s unique product,movement,and storage characteristics.An optimal profile allows workers to pick items more quickly and accurately and reduces the risk of injuries.
In smaller warehouses,slotting is often done manually or using standard computer spreadsheet or database programs.Specifically-designed slotting software is a valuable tool for operations with a large number of SKUs (stock-keeping units) as well as for businesses where the items inventoried change frequently,such as in catalog distribution centers.
Results
Proper slotting does take time to establish,and regular maintenance is required to keep items positioned properly.But slotting software can ease the burden of keeping items in proper locations.
End results?Slotting items properly increases picking productivity and makes order selection easier,safer,and more accurate.Customer satisfaction is enhanced when shipments are organized the way they want them.What business,large or small,wouldn't want to see that happen?

给点翻译,
Pareto distribution: 帕累托分布
parameter:参数
suppose:假设
random variable:随机变量
pre-specified parameter:预先参数
density function:密度方程
fixed values:定值
tranformation:转化,变形
uniform distribution: 一致分布；等分布；均匀分布

Q1:the mean of the probability distribution of the sample mean is
A) A static B) a random variable C) a parameter D) always equal to sample mean
Q2:A sampling distribution is defined as the probability distribution
A) of possible sample sizes that can be observed from a given population
B) of the values of a statics based on samples of a given size from a given population.
C) Of a population parameter based on independent,random sampling of observations from the population distribution.
D) Of the values of a statistic based on different-sized samples taken from the population distribution.
Q3:For a normal population,an increase in sample size has an effect primarily on which property of the sampling distribution of the sample mean:
a) Dispersion b) Kurtosis C) skewness D) central tendency
Q4:the Central Limit Theorem is important for all the following reasons except
a) It ensures that the sampling distribution of the mean approaches normal as the sample size increases
b) It allows us to use information from samples to draw conclusions about population parameters without knowing the shape of the population distribution
c) It ensures that samples drawn are random and representative
d) It allows us to use normal distribution in statistical tests on sample means
Q5:If σ is known,the confident interval for μis based on the
A) t-distribution B) normal distribution C) binomial distribution D) Poisson distribution

英语翻译
对于标题为：质量管理体系职能分配该如何翻译正确呢?
可以说：the function distribution of quality management system吗?function 和 distribution两个都是名字可以这么组合吗?

问一下OG上一个题.The distribution,if not the sale,of newspapers was assisted by the establishment of a postal service in1710,which had a network of some 65 offices by 1770,serving all 13 colonies……这个句子里的which代指什么?为什么?

新闻发布系统的英文怎么说呢?
News Announce system
New distributiong system哪个好呢?

63807校正:the uneven distribution of population results from a variety of reasons.
求本句翻译及语言点
1_the uneven distribution of population results from a variety of reasons.
翻译：这种人口不平均的分布由多种原因引起
the uneven distribution of population：这种人口不平均的分布
uneven distribution：不平均的分布
uneven：adj.1.不平坦的;不平滑的;不规则的;凹凸不平的2.不一致的;不相等的;有差异的
result from：产生于…,由…引起
a variety of reasons：多种原因
a variety of：adj.多种的,各种各样的

英语翻译
New,there is more uniform temperature distribution,which has been achieved by an improved thermal.

distribution与allocation的区别
今晚查字典查这两个词查到有点傻了,好像脑袋有点短路了查来查去分不出过所以然来,只好上来求人指点了.

power distribution 是幂指数分布?
since the power distribution of different types of coefficients may vary
由于不同类型系数的power分布不同．

They found that the present distribution channels could no longer meet their
needs.

panda ←1)existing number in the world。2)Distribution in the world

【翻译】 Wal-Mart 's unique decentralized distribution system , also Walton 's idea , created the advantage needed to further encourage growth in the 1980s during growing complaints that the "superstore" was stopping smaller and traditional stores from developing.

英语翻译
Optical flow is the distribution of apparent velocities of movement of bright-
ness patterns in an image.Optical flow can arise from relative motion of
objects and the viewer [6,7].Consequently,optical flow can give important
information about the spatial arrangement of the objects viewed and the rate
of change of this arrangement [8].Discontinuities in the optical flow can help in
segmenting images into regions that correspond to different objects [27].
Attempts have been made to perform such segmentation using differences
between successive image frames [15,16,.17,20,25].Several papers address the
problem of recovering the motions of objects relative to the viewer from the
optical flow [10,18,19,21,29].Some recent papers provide a clear exposition
of this enterprise [30,31].The mathematics can be made rather difficult,by the
way,by choosing an inconvenient coordinate system.In some cases in-
formation about the shape of an object may also be recovered [3,18,19].
These papers begin by assuming that the optical flow has already been
determined.Although some reference has been made to schemes for comput-
ing the flow from successive views of a scene [5,10],the specifics of a scheme
for determining the flow from the image have not been described.Related
work has been done in an attempt to formulate a model for the short range
motion detection processes in human vision [2,22].The pixel recursive
equations of Netravali and Robbins [28],designed for coding motion in
television signals,bear some similarity to the iterative equations developed in
this paper.A recent review [26] of computational techniques for the analysis of
image sequences contains over 150 references.
The optical flow cannot be computed at a point in the image independently
of neighboring points without introducing additional constraints,because the
velocity field at each image point has two components while the change in
image brightness at a point in the image plane due to motion yields only one
constraint.Consider,for example,a patch of a pattern where brightness I varies
as a function of one image coordinate but not the other.Movement of the
pattern in one direction alters the brightness at a particular point,but motion
in the other direction yields no change.Thus components of movement in the
latter direction cannot be determined locally.

帮我解析一下这句话
film marketing and distribution executives have been clamoring for more digitally equipped theaters to keep 3-D movies from crowding one another off the screen.
主要帮我解析一下to keep 3-D movies from crowding one another off the screen.

Today's immediate problem is one of _____(distribution) of both food and income.

英语翻译
III.SYSTEM DESCRIPTION
In this work,a city distribution truck is studied in which a
4 l diesel engine and a parallel hybrid system are installed.
A.Potential benefits of diesel hybrids
Currently,hybrid drivelines are applied to reduce the fuel
consumption of petrol engines.Interest is increasing in the
application of hybrid technology to diesel engines,with
increasing production and product announcements [5,6].
Hybrid drivelines have also been applied to improve petrol
engine emissions [7].Diesels can also benefit from
hybridization through:
1) Elimination of engine idle;
2) Reduced power demand through regenerative braking;
3) Reduction of emissions by reducing dynamics and
optimizing the aftertreatment environment;
4) Shifting the engine working point can also lead to
reduction of both fuel consumption and emissions for
particular applications.

what is the MLE for the mean of a normal distribution whose variance is known to be

请问pre-distribution是什么意思?
刚开始学物流,然后看到了如题单词,请问是什么意思?

英语翻译
1：The binomial distribution becomes more skewed to the right (positive) as the probability of success become smaller.
2：The limiting form of the binomial distribution where the probability of success p is small and n is large is called the Poisson probability distribution.

英语语法问题,
Distribution management in order to achieve
customer satisfaction with the level of service with the lowest distribution
costs,planning,organization,coordination and control of distribution
activities.

帮我改下语法吧!
5.Strengthen the reform of income distributionsystem.Insisted distribution according to work is dominant and a variety ofmodes of distribution coexist distribution system.Implement the principle ofproduction and distribution according to contribution in this basis,we mustdeepen the reform of state-owned enterprises and the civil service wage systemestablishes normal wage growth mechanism.establish basic job wage system basedwage system to post fixed salary,the income gap between different positionsproperly opened,for enterprises to improve the income level of key staffpositions and outstanding contributions for organizations and institutions,tocontinue to increase in wages of civil servants and teachers on the basis offurther widening the income gap between positions,titles between [5].
6 In order to achieve common prosperity,weneed to improve the minimum wage protection system,correctly handle therelationship between wages and employment.Both with economic growth andimproved productivity and gradually raise wages,but also to prevent excessivewage growth is too high,job losses and increasing employment pressure.
improve the ability toimprove the social redistribution of personal income tax system,inheritancetax,large property tax,special consumption tax; ..Timely introduction ofsocial security taxes through various income distribution policy,narrowing.Theincome gap,to prevent polarization.

英语翻译
The distribution of electrons in atoms,molecules,andsolids determin nearly all of their physical and chemical properties,withstructure and reactivity being those of greatest interest to the chemist.

the Wishart distribution is a generalization to multiple dimensions of the chi-square distribution,

英语翻译
Small scale distribution and diurnal migration of zooplankton were investigated in lake Naardermeer,a shallow lake largely covered by uniform Chara beds.For sampling,pattern samplers with a number of inverted funnels facing towards the lake bottom and held in a frame were used.Samplers were placed near the water surface and just above the plants,during one diel cycle (noon and midnight).Ceriodaphnia and Bosmina showed the highest levels of aggregation,both in the Chara bed and in the water above it.Chydorus sphaericus Müller and Diaphano- soma brachyurum Leivendid not aggregate in open water at daytime.Chydorus sphaericus and Eurytemora velox Lilljeborg ascended from the Chara bed into the open water during the night.Sida crystalina Müller and Chydorus sphaericus individuals collected at night were larger in size than those collected during daytime,both in the Chara bed and in the water above it.The results indicate that larger Sida crystallina individuals have a stonger preference to stay in the Chara bed at night than smaller individuals.In lakes with extensive and uniform Chara beds with a large overlying water column,zooplankton appear to migrate vertically rather than horizontally.

英语翻译
The distribution of organic matter among the size fractions of soil is related to levels of free oxides (Fe and Al) (Curtin 2002),which provide loci for attachment of organic functional groups to mineral surfaces (Kaiser and Guggenberger 2000).Adsorption of Pi is also related to free oxide concentrations (Agbenin and Tiessen 1994).Thus,the distribution of Po among the mineral fractions of soil should be broadly similar to that of Pi,as was observed by Tiessen and Stewart (1983).There was a reasonably strong correlation (R2=0.63,P

英译汉,长度较短,
Distribution of your limited edition collector CDPostCardz is entirely up to your imagination too.During the Olympics,many collectors and even casual tourists will seek out mementos and souvenirs to keep for their memories.You could partner with well-known fast food franchises,and have them include CDPostCardz as part of a meal package.With such a unique and exciting product,you won’t have any problems finding places to distribute your collector CDPostCardz.
金山直接译过来的,不要发,

英语翻译
the normal distribution,a recurring pattern that describes how far values are likely to deviate from the average.

英语句子分析!
It serves directly to assist a rapid distribution of goods at reasonable prices,thereby establishing a firm home market and so making it possible to provide for export at competive prices.
动名词和过去式做什么类型的状语是根据什么判断的?是根据在句子中的意思判断的还是有固定的结构搭配?
动名词和过去式不是非谓语就是状语(除了位于动词外),这句话对吗?

A sampling distribution problem?A random sample of size 81 is drawn from a population with a stand
A random sample of size 81 is drawn from a population with a standard deviation of 16.If only 18% of the time a sample mean greater than 300 is obtained,what is the mean of the population?