I Lgr 11 betonas att elever ska lära sig olika beräkningsstrategier i huvudräkning och skriftliga metoder för att kunna lösa uppgifter med olika tillvägagångssätt. Denna studie undersöker vilka olika beräkningsstrategier elever i mellanstadiet använder sig utav och vilka missuppfattningar de har. Vidare undersöks huruvida uppgiftens matematiska utformning påverkar elevernas val av beräkningsstrategi. För att ta reda på detta har vi gjort en kvalitativ forskningsstudie där vi har utgått från befintlig data. Resultatet i vår undersökning visar att eleverna använder sig av olika beräkningsstrategier och att de flesta missuppfattningar beror på bristfälliga förkunskaper. Resultatet visar även att uppgiftens utformning påverkar elevernas val av beräkningsstrategi.

Thesis (Ph.D.)--Drexel University, 2008. / Includes abstract and vita. Includes bibliographical references (leaves 262-277).

Thesis (Ph. D.)--University of Florida, 1980. / Description based on print version record. Typescript. Vita. Includes bibliographical references (leaves 190-192).

Thesis (Ph.D.)--Drexel University, 2010. / Includes abstract and vita. Includes bibliographical references (leaves 151-159).

The problem to be dealt with in this paper is the effect of social ridicule on the ego-strength of the individual. In being forced into the restricted social existence common with the alcohol addict, a significant decrease in ego-strength is to be expected.

Thesis advisor: Amir H. Hoveyda / Homoallylic amines and alcohols, particularly those amenable to further functionalization, are among the most widely used building blocks in chemical synthesis and are typically accessed by addition of an allyl-metal compound to an electrophile. Studies discussed herein have focused on advancing stereoselective synthesis of versatile allylboron compounds and their utilization in catalytic regio-, diastereo-, and enantioselective addition to various electrophiles. Mechanistic principles have been central to the investigations described in this thesis, and it has been on this basis that catalytic strategies for practical synthesis of bioactive molecules were developed. Chapter One. Vicinal amino alcohols are ubiquitous in natural products and serve as versatile synthetic intermediates and we envisaged that diastereo- and enantioselective additions of O-substituted allyl boronates offers an attractive option to access these motifs. In the presence of zinc (II) methoxide as co-catalyst, it will be demonstrated that sequence of events may occur, wherein isomerization of an initially formed allyl complex occurs prior to addition of an aldimine with kinetic selectivity. As will be described, through the use of an optimal catalyst, N-protecting/activating group and appropriate reaction conditions, differentially protected vicinal amino alcohol derivatives may be synthesized in high enantiopurity. The utility of the approach is highlighted through synthesis of an NK1 agonist. Chapter Two. It will be demonstrated that additions of various organoboron compounds converts readily accessible and easy-to-handle silyl-substituted -tertiary amines. Contrary to additions to aldimines, isomerization of the initially generated aminophenol-allyl complex is preempted, suchthat linear products are favored. DFT analysis suggests that high enantioselectivity likely originates from attractive electrostatic interaction between a trifluoromethyl group and the catalyst’s ammonium moiety. The synthetic utility was highlighted through concise, enantioselective synthesis of a key intermediate of a recently reported BACE-1 inhibitor on gram scale. Chapter Three. This section details the development of a method for direct synthesis of homoallylic alcohols bearing a Z-alkenyl chloride, which may be directly subjected to stereo-retentive cross coupling without wasteful protection/deprotection or redox operations. Products were obtained in high regio- and enantioselectivity for aliphatic, alkenyl- and heteroaryl-substituted aldehydes. The approach was utilized in a concise, protecting group-free synthesis of anti-tumor agent mycothiazole. Chapter Four. A method for stereoselective synthesis of fluorine-containing trisubstituted allyl boronates will be presented. It will then be illustrated that in the presence of an appropriate aminophenol catalyst, a large assortment of homoallylic alcohols containing a quaternary fluoro- and trifluoromethyl-substituted stereogenic center may be obtained with efficiency and high diastereo- and enantioselectivity. The obtained products were then elaborated to the furanose core of Sofosbuvir, a recently approved treatment for hepatitis C. / Thesis (PhD) — Boston College, 2020. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Chemistry.

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

<p> The photo-addition of 2-cyclohexenone to norbornadiene has been investigated. A substantial proportion of the products formed were α, β unsaturated ketones. The structure of these has been assigned and a rationale is presented to explain the formation of these products. </p> / Thesis / Master of Science (MSc)

There are two objects to which this book points: One- a process in which both the designer and the designed take part. The process was "sensed" in the making of the book itself, and the thesis was named. The book is at once an expression of this process, and a part of the process expressed. Its nature is a result of a relationship described as reciprocal. The other- a building. In designing an addition to the Blacksburg Virginia Middle School, thoughts about light and surface, ground and figure, earth and sky guided decisions made in the process. The result is regarded as both created and discovered. / Master of Architecture

Located just off of Sixteenth Street NW in Washington, D.C., the Meridian International Center complex sits on an elevated, crescent-shaped swath of land opposite Meridian Hill/Malcolm X Park. On the site are two neoclassical residences, both designed by John Russel Pope in the early 20th century. Initially designed as diplomatic residences, when Meridian International Center purchased the site in 1960, the houses were converted into facilities for the organization. Today, having recently undergone extensive renovations the buildings are listed on the National Register of Historic Places. Meridian International Center is devoted to the exchange of people, ideas, and art. The organization aims to promote international understanding through diplomatic exchanges, arts programs, lecture series, and educational programs. The majority of operations is devoted to the International Visitors Program, however in recent years, the organization has expressed a desire to expand their other programs, specifically the Arts & Culture and World Affairs divisions. A primary intention of Meridian International Center is to open its doors to the city, to invite and engage the public in international matters through a variety of expositions. Currently lacking sufficient space to accommodate such programs, this thesis proposes a new facility for Meridian International Center's building complex. This facility is to function as a Contemporary Culture Center. With the intention of opening the institution to the public, both literally and figuratively, the building is to act as a beacon in the city for the sharing and mixing of cultures. / Master of Architecture