Dimensions of instructional psychology

This paper highlights eight topics cogent to psychologically enlightened instructional theory. Discussed issues include: (1) a multivariate model of man, (2) American school's cultural heritage, (3) the limitations of scientific reductionism, (4) developmentalism in school learning, (5) individual differences, (6) decision-oriented instructional research, (7) teacher education, and (8) the separation of learning theory from instructional theory. Implications for future instructional theorizing are offered.     

家兔胴体品质和肉质性状的比较研究

本文通过研究表明:本文用完全双列杂交对五品种肉兔:加州兔(C)、新西兰兔(N)、丹麦白兔(D)、花巨兔(G)、比利时兔(B)进行了一般配合力(GCA)和特殊配合力(SCA)分析,估计了杂交组合的杂种优势率(RH),结果表明:半净膛、全净膛屠宰率在父本中差异不显著,在母本则有极显著差异。多重比较方法分析所得半净膛、全净膛屠宰率在母本中高低依次为新西兰兔、花巨兔、比利时兔、丹麦白兔、加州兔,其中新西兰兔、花巨兔的母本的半净膛率分别极显著(P<0.01),显著高于丹麦白兔和加州兔。因此,新西兰兔母本最好,加州母兔最差。特殊配合力分析两指标互作效应均不明显,杂交无优势。肉质性状间普遍存在一定的表型相关,但多数未能达到0.05的显著水平。pH2L与pH2S有显著的强正相关(P<0.05);对于胴体性状而言,全净膛屠宰率、半净膛屠宰率为极显著的强正相关(r=0.985,P<0.01)。肉质性状和胴体性状之间存在弱负相关,因此,总体上讲肉质与胴体性状间的关系表现为一种颉颃性的相关。     

一类Pythagoras问题的推广

设x,y,z是正整数.若x2+y2=z2,则称(x,y,z)是一组Pythagoras数.本文运用初等方法证明了:(1)恰有12组Pythagoras数(x,y,z)满足2p(x,y,z)=xy,其中p为奇素数;(2)恰有36组Pythagoras数(x,y,z)满足2pq(x+y+z)=xy,其中p,q均为奇素数,且p相似文献   

La部分取代Ml混合稀土贮氢合金的电化学性能

金属La部分取代M l(混合稀土)的贮氢合金电极M l0.8La0.2N i4.0Mn0.4Co0.4A l0.1(A)容易活化,其充电效率、放电容量、快速放电能力以及荷电保持能力比电极M lN i4.0Mn0.4Co0.4A l0.1(B)分别提高5.5%、7.0%、4.0%和8.2%。电极A放电过电位比电极增大,且循环稳定性下降。     

The Relative Merits of Different Types of Overall Evaluations of Teaching Effectiveness

An unresolved issue in student evaluations of teaching effectiveness (SETE) literature is what type of overall evaluation of teaching effectiveness should be used in personnel decisions. The objective of this study is to compare the merits of: (a) an overall evaluation made by students, (b) a weighted average overall evaluation with the weights determined by students, (c) a weighted average overall evaluation with the weights being determined by the individual instructors teaching their respective classes, (d) an unweighted average overall evaluation, and (e) a second-order factor that proxies for an overall evaluation. Our results indicate that: (a) all of these overall evaluations were very highly intercorrelated, (b) the unweighted and weighted average overall evaluations measured virtually the same thing, and (c) the second-order factor that served as an overall evaluation was most highly correlated with the other overall evaluations and had the advantage of being most understandable to the faculty.     

Characteristics of Female Members of ACES

This article presents data on characteristics of female members of the ACES organization. Data regarding the (a) personal characteristics, (b) education, (c) employment, and (d) participation in national and regional ACES activities of ACES women is presented.     

一类Riccati型方程周期解的存在性

给出周期系数Riccati型方程dx/dt＝A（t）x^2m-1 B(t)x^2k-1 C(t)（其中，A(t)，B(t），C(t）是周期为T的连续函数，m,k∈N，m＞k）存在周期解的充分条件。     

Qualitative and quantitative analysis of goat ovaries,follicles and oocytes in view of in vitro production of embryos

Goat ovaries were collected from the slaughterhouse and categorized as right, left, corpus luteum （CL）-present and -absent group and evaluated on the basis of weight （g）, length （cm）, width （cm）, number of follicles, follicles aspirated and number and state ofcumulus-oocyte-complexes （COCs）. Comparatively higher weight [（0.66±0.02） vs （0.64±0.02） g], length [（1.17±0.02） vs （1.1 ±0.02） cm] and width [（0.77±0.02） vs （0.74±0.02） cm] were found in right ovaries than those of left. On the other hand significantly （P〈0.05） higher weight [（0.71±0.03） vs （0.64±0.01） g] and width [（0.76±0.03） vs （0.75±0.01） cm] were found in CL-present group than those of CL-absent group of ovaries. The left ovaries contained comparatively higher number of normal COCs [（1.06±0.09） per ovary] than fight ovaries [（1.03±0.10） per ovary] and the similar trend was found in total number of follicles [（4.51±0.25） vs （4.30±0.23） per ovary] and follicles aspirated [（2.55±0.14） vs （2.52±0.12） per ovary]. But the total COCs per ovary was almost similar in both ovaries [right and left： （1.85±0.12） and （1.85±0.11） per ovary, respectively]. Higher number of total COCs [（1.87±0.09） vs （1.76±0.16） per ovary], total number of follicles [（4.45±0.19） vs （4.16±0.37） per ovary], follicles aspirated [（2.55±0.10） vs （2.48±0.21） per ovary] and normal COCs [（1.12±0.07） vs （0.76±0.14） per ovary] were found in CL-absent group than those of CL-present group of ovaries.     

烯烃环丙烷化的络合催化研究

本文合成的(ipro)_3PCux,Ph_3PCux(x=cl,Br.I);(ArO)_3PCucl(ArO=Pho,O—O—Tol),Cu(-cac)_2,CuCl_2(pph_3)_2等铜络合物催化剂和 Cu(O_2CCF_3)_2,881—催化剂等铜羧酸盐催化剂.将这些催化剂用于催化四甲基乙烯和重氮乙酸乙酯的环丙烷化反应,其中881催化反应收率达84.4%,具有良好的工业应用价值.本文对环丙烷化反应的“诱导期”作了详细的研究,在环丙烷化反应过程中,加入15—环辛二烯(COD),分离得到了未见文献报道的一价铜有机络合物(I),经电子自旋共振,红外光谱、酸解后气相色谱测 COD,和分子量的测定,确定了结构.证实了反应活性中心,提出了反应的机理.     

“肩负”类动词历时更替浅析

在古汉语中一般用“荷”、“任”、“擔”、“挑”、“担”、“扛”、“揭”表示现代汉语中的“肩负”义。先秦时期,一般用“荷”和“任”;汉魏时期,“擔”字用例逐渐增多;宋时开始,用“挑”“扛”“担”表示这一意义;明清时期,“担”、“扛”、“挑”取代了“荷”、“揭”和“任”。     

高校图书馆读者需求论

研究和探讨读者需求,是为了更好地为读者服务,提升高校图书馆文献的利用率,文章分别对学生和教师的阅读需求特征作了分析。学生阅读需求特征为:1.阶段性;2.集中性;3.广泛性。教师的阅读需求特征为:1.全面系统;2.专深具体;3.新颖及时。     

正整数的立方部分数列的求和

研究了数列u(n)和v(n)的求和问题,其中u(n)表示不超过n的最大立方部分,v(n)表示不小于n的最小立方部分,给出了关于这两个数列的两个求和公式。     

二阶混合—复合型方程组的边值问题

本文解决了复合-混合型方程组若干边值问题正规解的存在唯一性,发现了边界条件的参数对问题解的存在唯一性有影响.     

关于优美指数的确定

利用除数函数的性质及初等方法,得到了一系列重要结论:(1)任何素数都是优美指数;(2)若t=2s-s-1(s为非负整数)或t=2s.3-s-1(s为非负整数)或t=2sp-s-2(s为非负整数,p为奇素数)或t=p1p2…ps-s-1(s为大于1的正整数,p1,p2,…,ps为适合p13),则pt都是优美指数。     

椭圆型Boussinesq方程Dirichlet问题解的存在性和唯一性

在关于k,hb,μb的非常弱的假设条件下,在Sobolev空间中证明了非齐次Dirichlet边界条件u=ud(x,y), (x,y)∈(e)Ω下非齐次椭圆型Boussinesq方程-（△）*(K(x,y)(u-hb)（△）u)=f(x,y,u), (x,y)∈Ω的解的唯一性以及齐次椭圆型Boussinesq方程（△）*(K(x,y)(u-hb)（△）u)=0, (x,y)∈Ω的解的存在性,其中Ω为有界多边形域.并给出反例,指出对一给定的f(x,y),非齐次方程-（△）*(K(x,y)(u-hb)（△）u)=f(x,y,u), (x,y)∈Ω的Dirichlet问题是不可解的.     

Dynamic measurements of serum inhibin B and estradiol: apredictive evaluation of ovarian response to gonadotrophin stimulation in the early stage of IVF treatment

Objective: We dynamically measured serum inhibin B and estradiol in the early stage of hormonal stimulation to predict the ovarian response in in vitro fertilization (IVF) treatment. Methods: A total of 57 patients (<40 years of age) who un-derwent the first cycle of long protocol IVF or introcytoplasmic sperm injection (ICSI) treatment were included. Serum inhibin B, estradioi, follicle stimulating hormone (FSH) and luteinizing hormone (LH) levels were measured four times: (i) on Day 3 of the menstrual cycle (basal); (2) on the day before the first administration of gonadotrophin (Gn) (Day 0); (3) on Day 1 of Gn therapy; and (4) on Day 5 of Gn therapy. Comparisons of these measurements with ovarian responses and pregnancy outcomes were made and analyzed statistically. Results: (1) On Day 1 and Day 5 of recombinant FSH (rFSH) stimulation, ovarian response, i.e., numbers of follicles, oocytes, fertilized oocytes, and embryos, had a positive correlation (rS=0.46～0.61, P=0.000) with raised inhibin B and estradiol concentrations, but a negative correlation (rS=-0.67～-0.38, P=0.000 or P<0.01) with total rFSH dose and total days ofrFSH stimulation. (2) No significant variation (P>0.05) between the pregnant and non-pregnant groups on the basis of mean age or on all hormone concentrations at four times of the IVF cycle was observed. However, all the seven patients aged >35 years did not reach pregnancy. Conclusions: (1) Serum inhibin B and estradiol concentrations obtained shortly after Gn therapy may offer an accurate and early prediction of ovarian response; (2) Low levels of serum inhibin B and estradiol obtained shortly after Gn stimulation indicate the need for a longer period of Gn treatment and a higher daily dosage; (3) No obvious pregnancy difference among patients of age <35 years was found; however, IVF pregnancy outcome is significantly lower in women of age >35 years.     

Profiles of educational assessment systems worldwide

This paper explores ten common themes concerning assessment practice in Australian education across the six states and two territories. The themes are: (1) a strong curriculum base influencing assessment, (2) the incorporation of school‐based assessment in all certification, (3) preference for standards‐referenced assessment, (4) respect for teacher judgement, (5) increasing vocational education delivery within schooling, (6) multiple pathways to future study and careers, (7) school‐based assessment in the compulsory years of schooling, (8) moves towards outcomes‐based frameworks, (9) issues relating to national benchmark data, and (10) equity issues.     

Collection of Laws and Decrees of the Central People's Government [Part I]

The People's Republic of China has now been born, the people's war of liberation will soon be decisively won throughout the country, and the great reconstruction of a new state has begun. To meet the needs of the reconstruction of our country, the Government Administration Council of the Central People's Government has decided to establish the Chinese People's University, to study the advanced experience of the reconstruction of the Soviet Union through the appointment of Soviet professors, and to systematically train various kinds of cadres necessary for the reconstruction of our new state. Under the direction of the Ministry of Education of the Central People's Government, this People's University will create departments and special training courses. The university's regular departments will tentatively include: (1) Economics, (2) Economic Planning, (3) Finance and Credit, (4) Commercial Trade, (5) Cooperatives, (6) Industrial Management, (7) Law, and (8) Foreign Service. The curriculums of these departments will be from two to four years' duration. The special training courses will tentatively include: (1) Economic Planning, (2) Finance and Credit, (3) Commercial Trade, (4) Cooperatives, (5) Industrial Management, (6) Statistics, (7) Foreign Service, (8) Education, (9) Law, and others. Tentatively, the programs of these courses will last six months. The university's educational policy will be a combination of learning and practical work, and the adapting of the Soviet experience to conditions in China. The university will begin its classes in February 1950.     

春秋"吴头楚尾"界说

“吴头楚尾”,顾名思义,是吴国与楚国的交界的地区。吴国与楚国交界之事,全在春秋时期。“吴头楚尾”,在今河南省、湖北省、湖南省的东界之东,即在今安徽省、江西省境内。“吴头楚尾”的争战之事。主要发生在今安徽省的北部与中部。吴国攻取和占领艾邑（今赣西北地区）的时间,在公元前504年至公元前495年之间。从公元前495年至公元前473年。是吴楚边界的稳定时期。吴国辖有番邑（令赣东北地区）和艾邑（今赣西北地区）;今江西中部和南部地区,大致属于楚国。（在令安徽境内）楚国的东界：乾溪、城父（今毫州市）——胡（今阜阳市）——英（今金寨县）——舒庸（今霍山县）——今宿松县。（在今安徽境内）吴国的西界：房钟（今蒙城县）——州来（今凤台县）——六（今六安市）——舒（今舒城县）——灊（今潜山县）。     

一类广义Liénard型方程的极限环

本文讨论广义Lienard系统(E):x+(f(x)+k(x)x)+g(x)=0,获得了系统(E)的极限环存在,至多有一个或两个的充分条件.这些条件不仅简单和易于验证,而且推广了〔5,6〕的结果.