Giving English Language Learners the Time They Need to Succeed: Profiles of Three Expanded Learning Time Schools

According to the National Center for Education Statistics, the percentage of public school students who are Englishlanguage learners (ELLs) was, at last count, 13 percent in primary schools, 7 percent in middle schools, and 5 percent in high schools. And this ELL population will likely double in the coming years. In fact, some demographers predict that by 2030 the ratio of ELL students to non-ELL students could be one in four. Meanwhile, the nation's poorest schools—those serving a population at least 75 percent lowincome students—along with the whole state of California already serve that high a proportion of ELLs.In the pages that follow, we endeavor to describe how these expanded learning opportunities take shape in three  schools that have significantly expanded learning time for all students. Though the schools have each adopted their own specific means of supporting ELL students, they share many ommon practices, and, not incidentally, an overall approach of carefully identifying individual student needs and, then, applying the educational resources necessary to meet those needs. We have selected these schools from among the over 60 schools in the NCTL network—a group of schools forwhich we have, in recent years, provided technical assistance coaching to plan and implement an expanded school day.

Creating Learning Environments in the Early Grades that Support Teacher and Student Success: Profiles of Effective Practices in Three Expanded Learning Time Schools

The purpose of this report is to describe how schools that have converted to longer operational days—known as"expanded-time" schools—better support the development of young children. The National Center on Time & Learning (NCTL) has chosen to document the work of these three particular schools from among its network of over 60  expanded-time schools because, over the last few years, they have demonstrated in concrete, ever-evolvingways, how time can be leveraged to optimal effect in educating young students. Though the practices they have honed are not unique, these schools show a distinctive capacity both to be creative about how best to serve their youngest students and to put in place the structures that allow these innovative approaches to flourish. Still, the educatorsin these schools are quick to admit that their classrooms and other supports for students in the early grades are works in progress. As such, the insights we draw from them are intended as guideposts along a path toward excellent education in the early grades, rather than definitive portraits of the destination.

He Scattering from Random Adsorbates, Disordered Compact Islands and Fractal Submonolayers: Intensity Manifestations of Surface Disorder

A theoretical study is made on He scattering from three fundamental classes of disordered ad-layers: (a) Translationally random adsorbates, (b) disordered compact islands and (c) fractal submonolayers. The implications of the results to experimental studies of He scattering from disordered surfaces are discussed, and a combined experimental-theoretical study is made for Ag submonolayers on Pt(111). Some of the main theoretical findings are: (1) Structural aspects of the calculated intensities from translationally random clusters were found to be strongly correlated with those of individual clusters. (2) Low intensity Bragg interference peaks appear even for scattering from very small ad-islands, and contain information on the ad-island local electron structure. (3) For fractal islands, just as for islands with a different structure, the off-specular intensity depends on the parameters of the He/Ag interaction, and does not follow a universal power law as previously proposed in the literature. In the experimental-theoretical study of Ag on Pt(111), we use first experimental He scattering data from low-coverage (single adsorbate) systems to determine an empirical He/Ag-Pt potential of good quality. Then, we carry out He scattering calculations for high coverage and compare with experiments. The conclusions are that the actual experimental phase corresponds to small compact Ag clusters of narrow size distribution, translationally disordered on the surface.Comment: 36 double-spaced pages, 10 figures; accepted by J. Chem. Phys., scheduled to appear March 8. More info available at http://www.fh.huji.ac.il/~dani

Video: Board Certification: Reaching the Pinnacle of Practice

Course Outline & Timeline Registration & Continental Breakfast: 7:30 to 7:55 am Atrium & Lecture Room Welcome & Introduction: 7:55 to 8:00 am Elena Rose Minicucci, J.D., Director of Alumni Relations, NSU Shepard Broad Law Center Welcome Introduce Professor Donna Carol Litman, and attorneys Sheryl Moore, Steven Farbman, Todd Weicholz, and William Snyder, LL.M. Seminar Presentation 8:00 am to 9:15 am Professor Donna Carol Litman - Moderator Nova Southeastern University Shepard Broad Law Center Fort Lauderdale, FL Florida Bar Board Certified in Tax Law Professor Litman will lead the discussion among the other Board Certified attorneys listed above. The Discussion will cover the following: Overview of Board Certification – Requirements Rules Regulating Board Certification – in general Handout: Rule 6-3.5 “Standards for Certification” (general) Handout: Rule 6-3.6 “Recertification” (general) Revocation of Certification – Once Certified, lawyer may lose Certification for certain reasons such as: if the area of practice ceases to be certified; if disciplinary action is taken against the lawyer pursuant to Rules Regulating The Florida Bar; if the lawyer commits a crime; misrepresentation by the lawyer; failure to abide by the rules and regulations governing the program; other lawyer misconduct. Handout: Rule 6-3.8 “Revocation of Certification” 6 Ethics – Rules Regulating The Florida Bar Rule 6-3.9 “Manner of Certification” attorney and law firm must comply with this rule for all advertising, website, business cards, office sign; limitation on use of terms: “Specialist” or “Board Certified” or “Expert” or “B.C.S.” Handout: Rule 6-3.9 “Manner of Certification” & 4-7.14(a)(4) “Potentially Misleading Advertisements” Practice Areas – Board Certification in Florida offers twenty-four practice areas in which to become Board Certified Handout: “Florida’s 24 Legal Specialty Areas” from The Florida Bar Five Specific Board Certification Practice areas discussed below by speakers who are Board Certified in their practice areas: Tax Law Certification: Donna Carol Litman, Esq. Requirements as set forth in Rule 6-5 “Standards for Certification of a Board Certified Tax Lawyer” Handout: Rule 6-5 (including 6-5.1 through 6-5.4) Discussion of Article: Board Certification: The View From the Bench…and Beyond” by George W. Maxwell, III, 77 APR Fla. B.J. 34 (April 2003) – how Judges view Board Certified attorneys Marital & Family Law Certification: Sheryl Moore, Esq. Requirements as set forth in Rule 6-6 “Standards for Board Certification in Marital & Family Law” Handout: Rule 6-6 (including 6-6.1 through 6-6.5) – lawyers and judicial officers included Case Law and/or Ethical Considerations – The Florida Bar v. Morse 784 So. 2d 414 (Fla. 2001) dealing with revocation of Board Certification in Marital & Family Law for failure to provide diligent and competent representation to client Civil Trial Certification: Steven S. Farbman, Esq. Requirements as set forth in Rule 6-4 “Standards for Certification of a Board Certified Civil Trial Lawyer” Handout: Rule 6-4 (including 6-4.1 through 6-4.4) Case Law and/or Ethical Considerations – Rules Regulating The Florida Bar, Chapter 4 – 1.5 Fees and Costs for Legal Services (including Contingency Fee Agreements) and Art. 1 Sec. 26 The Florida Constitution, “Claimant’s Right to Fair Compensation” Criminal Trial Certification: Todd Weicholz, Esq. Requirements as set forth in Rule 6-8 “Standards for Certification of a Board Certified Criminal Lawyer” Handout: Rule 6-8 (including 6-8.1 through 6-8.4) Case Law and/or Ethical Considerations – 4-7.18 “Direct Contact with Prospective Clients” especially relevant to criminal defense matters Wills, Trusts & Estates Certification: William Snyder, LL.M, Esq. Requirements as set forth in Rule 6-7 “Standards For Certification of a Board Certified Wills, Trusts, and Estates Lawyer” 7 Handout: Rule 6-7 (including 6-7.1 through 6-7.4) Case Law & Ethical Considerations - Rules Regulating the Florida Bar – Chapter 4 – 7.13 “Deceptive and Inherently Misleading Advertisements” especially regarding experience and special expertise Professor Donna Carol Litman, Esq. 9:15 to 9:30 am General Question & Answer Session with Seminar Attendees & Board Certified Speakers: Sheryl Moore, Esq., Steven S. Farbman, Esq., Todd Weicholz, Esq., and William Snyder, LL.M., Esq. Seminar ends at 9:30 a

He Scattering from Compact Clusters and from Diffusion-Limited Aggregates on Surfaces: Observable Signatures of Structure

The angular intensity distribution of He beams scattered from compact clusters and from diffusion limited aggregates, epitaxially grown on metal surfaces, is investigated theoretically. The purpose is twofold: to distinguish compact cluster structures from diffusion limited aggregates, and to find observable {\em signatures} that can characterize the compact clusters at the atomic level of detail. To simplify the collision dynamics, the study is carried out in the framework of the sudden approximation, which assumes that momentum changes perpendicular to the surface are large compared with momentum transfer due to surface corrugation. The diffusion limited aggregates on which the scattering calculations were done, were generated by kinetic Monte Carlo simulations. It is demonstrated, by focusing on the example of compact Pt Heptamers, that signatures of structure of compact clusters may indeed be extracted from the scattering distribution. These signatures enable both an experimental distinction between diffusion limited aggregates and compact clusters, and a determination of the cluster structure. The characteristics comprising the signatures are, to varying degrees, the Rainbow, Fraunhofer, specular and constructive interference peaks, all seen in the intensity distribution. It is also shown, how the distribution of adsorbate heights above the metal surface can be obtained by an analysis of the specular peak attenuation. The results contribute to establishing He scattering as a powerful tool in the investigation of surface disorder and epitaxial growth on surfaces, alongside with STM.Comment: 41 pages, 16 postscript figures. For more details see http://www.fh.huji.ac.il/~dan

Differential expression of a BMP4 reporter allele in anterior fungiform versus posterior circumvallate taste buds of mice

<p>Abstract</p> <p>Background</p> <p>Bone Morphogenetic Protein 4 (BMP4) is a diffusible factor which regulates embryonic taste organ development. However, the role of BMP4 in taste buds of adult mice is unknown. We utilized transgenic mice with LacZ under the control of the BMP4 promoter to reveal the expression of BMP4 in the tongues of adult mice. Further we evaluate the pattern of BMP4 expression with that of markers of specific taste bud cell types and cell proliferation to define and compare the cell populations expressing BMP4 in anterior (fungiform papillae) and posterior (circumvallate papilla) tongue.</p> <p>Results</p> <p>BMP4 is expressed in adult fungiform and circumvallate papillae, i.e., lingual structures composed of non-taste epithelium and taste buds. Unexpectedly, we find both differences and similarities with respect to expression of BMP4-driven ß-galactosidase. In circumvallate papillae, many fusiform cells within taste buds are BMP4-ß-gal positive. Further, a low percentage of BMP4-expressing cells within circumvallate taste buds is immunopositive for markers of each of the three differentiated taste cell types (I, II and III). BMP4-positive intragemmal cells also expressed a putative marker of immature taste cells, Sox2, and consistent with this finding, intragemmal cells expressed BMP4-ß-gal within 24 hours after their final mitosis, as determined by BrdU birthdating. By contrast, in fungiform papillae, BMP4-ß-gal positive cells are never encountered within taste buds. However, in both circumvallate and fungiform papillae, BMP4-ß-gal expressing cells are located in the perigemmal region, comprising basal and edge epithelial cells adjacent to taste buds proper. This region houses the proliferative cell population that gives rise to adult taste cells. However, perigemmal BMP4-ß-gal cells appear mitotically silent in both fungiform and circumvallate taste papillae, as we do not find evidence of their active proliferation using cell cycle immunomarkers and BrdU birthdating.</p> <p>Conclusion</p> <p>Our data suggest that intragemmal BMP4-ß-gal cells in circumvallate papillae are immature taste cells which eventually differentiate into each of the 3 taste cell types, whereas perigemmal BMP4-ß-gal cells in both circumvallate and fungiform papillae may be slow cycling stem cells, or belong to the stem cell niche to regulate taste cell renewal from the proliferative cell population.</p

Olfactory and solitary chemosensory cells: two different chemosensory systems in the nasal cavity of the American alligator, Alligator mississippiensis

<p>Abstract</p> <p>Background</p> <p>The nasal cavity of all vertebrates houses multiple chemosensors, either innervated by the Ist (olfactory) or the Vth (trigeminal) cranial nerve. Various types of receptor cells are present, either segregated in different compartments (e.g. in rodents) or mingled in one epithelium (e.g. fish). In addition, solitary chemosensory cells have been reported for several species. Alligators which seek their prey both above and under water have only one nasal compartment. Information about their olfactory epithelium is limited. Since alligators seem to detect both volatile and water-soluble odour cues, I tested whether different sensory cell types are present in the olfactory epithelium.</p> <p>Results</p> <p>Electron microscopy and immunocytochemistry were used to examine the sensory epithelium of the nasal cavity of the American alligator. Almost the entire nasal cavity is lined with olfactory (sensory) epithelium. Two types of olfactory sensory neurons are present. Both types bear cilia as well as microvilli at their apical endings and express the typical markers for olfactory neurons. The density of these olfactory neurons varies along the nasal cavity. In addition, solitary chemosensory cells innervated by trigeminal nerve fibres, are intermingled with olfactory sensory neurons. Solitary chemosensory cells express components of the PLC-transduction cascade found in solitary chemosensory cells in rodents.</p> <p>Conclusion</p> <p>The nasal cavity of the American alligator contains two different chemosensory systems incorporated in the same sensory epithelium: the olfactory system proper and solitary chemosensory cells. The olfactory system contains two morphological distinct types of ciliated olfactory receptor neurons.</p

Limits of Calcium Clearance by Plasma Membrane Calcium ATPase in Olfactory Cilia

BACKGROUND: In any fine sensory organelle, a small influx of Ca(2+) can quickly elevate cytoplasmic Ca(2+). Mechanisms must exist to clear the ciliary Ca(2+) before it reaches toxic levels. One such organelle has been well studied: the vertebrate olfactory cilium. Recent studies have suggested that clearance from the olfactory cilium is mediated in part by plasma membrane Ca(2+)-ATPase (PMCA). PRINCIPAL FINDINGS: In the present study, electrophysiological assays were devised to monitor cytoplasmic free Ca(2+) in single frog olfactory cilia. Ca(2+) was allowed to enter isolated cilia, either through the detached end or through membrane channels. Intraciliary Ca(2+) was monitored via the activity of ciliary Ca(2+)-gated Cl(-) channels, which are sensitive to free Ca(2+) from about 2 to 10 microM. No significant effect of MgATP on intraciliary free Ca(2+) could be found. Carboxyeosin, which has been used to inhibit PMCA, was found to substantially increase a ciliary transduction current activated by cyclic AMP. This increase was ATP-independent. CONCLUSIONS: Alternative explanations are suggested for two previous experiments taken to support a role for PMCA in ciliary Ca(2+) clearance. It is concluded that PMCA in the cilium plays a very limited role in clearing the micromolar levels of intraciliary Ca(2+) produced during the odor response

Distal radius fractures in children: substantial difference in stability between buckle and greenstick fractures

Background and purpose Numerous follow-up visits for wrist fractures in children are performed without therapeutic consequences. We investigated the degree to which the follow-up visits reveal complications and lead to change in management. The stability of greenstick and buckle fractures of the distal radius was assessed by comparing the lateral angulation radiographically

Combined In Silico and In Vivo Analyses Reveal Role of Hes1 in Taste Cell Differentiation

The sense of taste is of critical importance to animal survival. Although studies of taste signal transduction mechanisms have provided detailed information regarding taste receptor calcium signaling molecules (TRCSMs, required for sweet/bitter/umami taste signal transduction), the ontogeny of taste cells is still largely unknown. We used a novel approach to investigate the molecular regulation of taste system development in mice by combining in silico and in vivo analyses. After discovering that TRCSMs colocalized within developing circumvallate papillae (CVP), we used computational analysis of the upstream regulatory regions of TRCSMs to investigate the possibility of a common regulatory network for TRCSM transcription. Based on this analysis, we identified Hes1 as a likely common regulatory factor, and examined its function in vivo. Expression profile analyses revealed that decreased expression of nuclear HES1 correlated with expression of type II taste cell markers. After stage E18, the CVP of Hes1−/− mutants displayed over 5-fold more TRCSM-immunoreactive cells than did the CVP of their wild-type littermates. Thus, according to our composite analyses, Hes1 is likely to play a role in orchestrating taste cell differentiation in developing taste buds