scholarly journals A conceptual framework for the evolutionary selection of biologically 'essential' elements

2009 ◽  
Author(s):  
Mark Conyers
2009 ◽  
Vol 2 (2) ◽  
pp. 209-228 ◽  
Author(s):  
Leslie Rebecca Bloom ◽  
Amanda Reynolds ◽  
Rosemary Amore ◽  
Angela Beaman ◽  
Gatenipa Kate Chantem ◽  
...  

Readers theater productions are meaningful expressions of creative pedagogy in higher education. This article presents the script of a readers theater called Identify This… A Readers Theater of Women's Voices, which was researched, written, and produced by undergraduate and graduate students in a women's studies class called Intersections of Race, Class, and Gender. Section one of the article reproduces the script of Identify This that was based on life history interviews with a diverse selection of women to illustrate intersectional identities. Section two briefly describes the essential elements of the process we used to create and perform Identify This.


Author(s):  
William Durch ◽  
Joris Larik ◽  
Richard Ponzio

Security and justice are both essential elements in humanity’s quest not only to survive but to thrive with dignity; neither is sustainable alone. Security is merely the appearance of order in a framework of structural violence unless tempered or leavened by concepts of justice that include human rights, human dignity, and other normative limits on the use of power. The pursuit of justice, whether at the personal, community, national, or international level can be crippled if not matched, in turn, by means to sustain security at each level. This complementarity of security and justice—despite their inherent tensions—is the core conceptual framework of the book. Achieving “just security,” we argue, is essential to the success of any global governance enterprise or architecture.


Author(s):  
Matěj Malík ◽  
Jiří Velechovský ◽  
Pavel Tlustoš

The use of cannabis for medicinal purposes dates back well before the era of modern medicine, but in recent years research into the use of medical cannabis in the medical and pharmaceutical sciences has grown significantly. In European countries, most cannabis plants have been and still are grown for industrial purposes. For this reason, hemp cultivation technology is relatively well researched, while little is known about the key factors affecting cannabis cultivation for medical purposes. The active substances of cannabis plant targeted by this review are called phytocannabinoids. The biosynthesis of phytocannabinoids is relatively well understood, but the specific environmental factors that influence the type and number of phytocannabinoids have been much less studied. Indoor or greenhouse cultivation, which uses automated lighting, ventilation, irrigation systems and complex plant nutrition has become much more sophisticated and appears to be the most effective method for producing medical cannabis. There are many different cultivation systems for cannabis plants, but one of the essential elements of the process is an optimal plant nutrition and selection of fertilisers to achieve it. This review summarises the existing knowledge about phytocannabinoid biosynthesis and the conditions suitable for growing plants as sources of medical cannabis. This review also attempts to delineate how nutrient type and bioavailability influences the synthesis and accumulation of specific phytocannabinoids based on contemporary knowledge of the topic.  


2018 ◽  
Vol 8 (2) ◽  
pp. 234-255 ◽  
Author(s):  
Ryan Vroegindewey ◽  
Veronique Theriault ◽  
John Staatz

Purpose The purpose of this paper is to examine how various transaction-cost characteristics influence the choice of vertical coordination (VC) structures (e.g. different contract types) and horizontal coordination (HC) structures (e.g. different farmer organization types) to link smallholder farmers efficiently with buyers. It analyzes the relationship between vertical and horizontal structures, and the economic sustainability of different structure combinations. Design/methodology/approach The paper develops a conceptual framework to predict coordination structures as a function of transaction-cost characteristics, compares predictions for the Malian cereals market to empirical evidence using 15 case studies, and then analyzes structure combinations. Findings Asymmetric scale between farmers and buyers; uncertainty in production, prices, policy, and contract enforcement; and quality and quantity debasement lead to selections of structures with high levels of control. Vertical and horizontal structures demonstrate a complementary relationship in certain core coordination roles, while exhibiting substitutability in the provision of other coordination activities. The marketing cooperative and marketing contract pairing is the most prevalent combination. Research limitations/implications The conceptual framework is useful for explaining the selection of coordination structures, and can be applied in other contexts to strengthen external validity. Originality/value The framework facilitates predictions and explanation of both VC and HC structures, with empirical application on a country and value chains receiving little attention in the literature.


2019 ◽  
Vol 55 (3) ◽  
pp. 295-308 ◽  
Author(s):  
Joy Llewellyn-Beardsley ◽  
Stefan Rennick-Egglestone ◽  
Simon Bradstreet ◽  
Larry Davidson ◽  
Donna Franklin ◽  
...  

Abstract Purpose Narratives of recovery have been central to the development of the recovery approach in mental health. However, there has been a lack of clarity around definitions. A recent conceptual framework characterised recovery narratives based on a systematic review and narrative synthesis of existing literature, but was based on a limited sample. The aims of this study were to assess the relevance of the framework to the narratives of more diverse populations, and to develop a refined typology intended to inform narrative-based research, practice and intervention development. Method 77 narrative interviews were conducted with respondents from four under-researched mental health sub-populations across England. Deductive and inductive analysis was used to assess the relevance of the dimensions and types of the preliminary typology to the interview narratives. Results Five or more dimensions were identifiable within 97% of narratives. The preliminary typology was refined to include new definitions and types. The typology was found not to be relevant to two narratives, whose narrators expressed a preference for non-verbal communication. These are presented as case studies to define the limits of the typology. Conclusion The refined typology, based on the largest study to date of recovery narratives, provides a defensible theoretical base for clinical and research use with a range of clinical populations. Implications for practice include ensuring a heterogeneous selection of narratives as resources to support recovery, and developing new approaches to supporting non-verbal narrative construction.


2006 ◽  
Author(s):  
Giovanni Nardinocchi ◽  
Stanislaw Jankowski ◽  
Marco Balsi

2011 ◽  
Vol 6 (5) ◽  
pp. 431-440 ◽  
Author(s):  
Eloy Gonzales ◽  
Shingo Mabu ◽  
Karla Taboada ◽  
Kaoru Shimada ◽  
Kotaro Hirasawa

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