From its initiation in 1998, the Angiosperm Phylogeny Group (APG) has focused on the production of an ever-more stable system of classification of the flowering plants (angiosperms). Based largely on analyses of DNA sequence data, the system is compiled by a larger group of experts than any previous system and has the advantage of being testable, allowing for confidence levels in the system to be estimated for the first time.
Chemotaxonomy is a little bit difficult task for the students to learn and understand. This slide helps the teachers and students to take class and understood it in a liable way
Heterothallic species have sexes that reside in different individuals. . The term is applied particularly to distinguish heterothallic fungi, which require two compatible partners to produce sexual spores, from homothallic ones, which are capable of sexual reproduction from a single organism.
From its initiation in 1998, the Angiosperm Phylogeny Group (APG) has focused on the production of an ever-more stable system of classification of the flowering plants (angiosperms). Based largely on analyses of DNA sequence data, the system is compiled by a larger group of experts than any previous system and has the advantage of being testable, allowing for confidence levels in the system to be estimated for the first time.
Chemotaxonomy is a little bit difficult task for the students to learn and understand. This slide helps the teachers and students to take class and understood it in a liable way
Heterothallic species have sexes that reside in different individuals. . The term is applied particularly to distinguish heterothallic fungi, which require two compatible partners to produce sexual spores, from homothallic ones, which are capable of sexual reproduction from a single organism.
Organisms are classified by humans for convenience of reference. In the scheme of classification, mycologists may not give equal importance to the criteria available. And therefore, we find different schemes of classification
This PPT explores the different attributes related to numerical taxonomy or Taxi- metrics in the domain of plant taxonomy along with different fundamental principles.
The slides has been edited. visit for new one on https://www.slideshare.net/alihaider408/stelar-system-stele-its-types-and-evolutionedited-182037813
Sorry for inconvenience.
Stele is defined as a central vascular cylinder, with or without pith and delimited the cortex by endodermis.
Van Tieghem and Douliot (1886) recognized only three types of steles.
1-Protostele
2-Siphonostele
3-Solenostele
Stelar Theory:
Major highlights of stellar theory are:
Stele is a real entity and present universally in all higher plants.
Cortex and stele are two fundamental parts of a shoot system
Stele and cortex are separated by endodermis
• Biosystematics is simply known as “the study of biodiversity and its origins”. In a broader sense, it is a science through which organisms are discovered, identified, named and classified with their diversity, phylogeny, spatial and geographical distributions.
• Biosystematics is a synthetic branch which uses the characters and data from many disciplines like morphology, anatomy, cytology, genetics, palynology, embryology, ecology, plant geography, phylogeny, physiology, phytochemistry, evaluation and paleobotany. Hence, biosystematics is an integrative and unifying science.
1.Definition and basic concepts of Biosystematics, , Historical perspectives of Biosystematics and Taxonomy, Stages of taxonomic procedures-alpha taxonomy, Beta taxonomy and Gamma taxonomy,
Neo taxonomy.
The "Telome theory" of Walter Zimmermann (1930, 1952) is the most accepted theory that is based on fossil record and synthesizes the major steps in the evolution of vascular plants.
It describes how the primitive type of vascular plants developed from Rhynia like plants.
A chemical substance that is produced in one portion of an organism and moves by diffusion or transport to another portion of same individual or to other individual of same species where it induce specific response is called a hormone.
Angiosperms are the flowering plants also known as Magnoliophyta. The botanical term "Angiosperm" meaning ‘bottle or vessel’ is derived from the ancient Greek. These are the most diverse group of land plants. Angiosperms are seed-producing plants and the distinguished features of angiosperms over gymnosperms are angiosperms bear flowers, endosperm within the seeds and the production of fruits that contain the seed. According to the botanists the flowering plants diversified and widespread 120 million years ago. The classification of the flowering plants also has a long history.
In the past, classification systems were typically produced by an individual botanist or by a small group resulting large number of systems. Different systems and their updates were generally favored in different countries. Bentham and Hooker’s system was popular in the Britain and the Engler’s system was famous in the Europe etc. These systems were introduced before the availability of genetic evidences and angiosperms were classified using their morphology and biochemistry. After the 1980’s genetic evidences were available and phylogenetic methods came into the classification procedures.
In the late 1990s, an informal group of researchers from major institutions worldwide came together and they established the Angiosperm Phylogeny Group (APG). The objective was to provide a widely accepted and more stable point of reference for angiosperm classification. APG I was published in 1998 as their first attempt in Annals of the Missouri Botanical Garden. The initial 1998 paper by the APG made angiosperms the first large group of organisms to be systematically re-classified primarily on the basis of genetic characteristics. The group emphasized the need for a classification system for angiosperms at the level of families, orders and above. The existed systems are rejected is because they are not phylogenetically classified. The outline of a phylogenetic tree of all flowering plants became established and several well supported major clades involving many families of flowering plants were identified. The new knowledge of phylogeny revealed relationships in conflict with the then widely used modern classifications.
The principles of APG system are retaining the Linnean system of orders and families, Use of monophyletic groups (Consist of all descendants of a common ancestor), taking a broad approach to defining the limits of groups such as orders and families and use of term ‘clades’ above or parallel to the level of orders and families. A major outcome of the classification is the disappearance of the traditional division of the flowering plants into two groups, which are monocots and dicots.
Even though there are several controversies about APG the botanists worldwide are influenced by the concept and are currently practice the system.
Hierarchical clustering and topology for psychometric validationColleen Farrelly
From my graduate work and extended to the field of education.
Citation of paper from which presentation was derived:
Farrelly, C. M., Schwartz, S. J., Amodeo, A. L., Feaster, D. J., Steinley, D. L., Meca, A., & Picariello, S. (2017). The Analysis of Bridging Constructs with Hierarchical Clustering Methods: An application to identity. Journal of Research in Personality.
Organisms are classified by humans for convenience of reference. In the scheme of classification, mycologists may not give equal importance to the criteria available. And therefore, we find different schemes of classification
This PPT explores the different attributes related to numerical taxonomy or Taxi- metrics in the domain of plant taxonomy along with different fundamental principles.
The slides has been edited. visit for new one on https://www.slideshare.net/alihaider408/stelar-system-stele-its-types-and-evolutionedited-182037813
Sorry for inconvenience.
Stele is defined as a central vascular cylinder, with or without pith and delimited the cortex by endodermis.
Van Tieghem and Douliot (1886) recognized only three types of steles.
1-Protostele
2-Siphonostele
3-Solenostele
Stelar Theory:
Major highlights of stellar theory are:
Stele is a real entity and present universally in all higher plants.
Cortex and stele are two fundamental parts of a shoot system
Stele and cortex are separated by endodermis
• Biosystematics is simply known as “the study of biodiversity and its origins”. In a broader sense, it is a science through which organisms are discovered, identified, named and classified with their diversity, phylogeny, spatial and geographical distributions.
• Biosystematics is a synthetic branch which uses the characters and data from many disciplines like morphology, anatomy, cytology, genetics, palynology, embryology, ecology, plant geography, phylogeny, physiology, phytochemistry, evaluation and paleobotany. Hence, biosystematics is an integrative and unifying science.
1.Definition and basic concepts of Biosystematics, , Historical perspectives of Biosystematics and Taxonomy, Stages of taxonomic procedures-alpha taxonomy, Beta taxonomy and Gamma taxonomy,
Neo taxonomy.
The "Telome theory" of Walter Zimmermann (1930, 1952) is the most accepted theory that is based on fossil record and synthesizes the major steps in the evolution of vascular plants.
It describes how the primitive type of vascular plants developed from Rhynia like plants.
A chemical substance that is produced in one portion of an organism and moves by diffusion or transport to another portion of same individual or to other individual of same species where it induce specific response is called a hormone.
Angiosperms are the flowering plants also known as Magnoliophyta. The botanical term "Angiosperm" meaning ‘bottle or vessel’ is derived from the ancient Greek. These are the most diverse group of land plants. Angiosperms are seed-producing plants and the distinguished features of angiosperms over gymnosperms are angiosperms bear flowers, endosperm within the seeds and the production of fruits that contain the seed. According to the botanists the flowering plants diversified and widespread 120 million years ago. The classification of the flowering plants also has a long history.
In the past, classification systems were typically produced by an individual botanist or by a small group resulting large number of systems. Different systems and their updates were generally favored in different countries. Bentham and Hooker’s system was popular in the Britain and the Engler’s system was famous in the Europe etc. These systems were introduced before the availability of genetic evidences and angiosperms were classified using their morphology and biochemistry. After the 1980’s genetic evidences were available and phylogenetic methods came into the classification procedures.
In the late 1990s, an informal group of researchers from major institutions worldwide came together and they established the Angiosperm Phylogeny Group (APG). The objective was to provide a widely accepted and more stable point of reference for angiosperm classification. APG I was published in 1998 as their first attempt in Annals of the Missouri Botanical Garden. The initial 1998 paper by the APG made angiosperms the first large group of organisms to be systematically re-classified primarily on the basis of genetic characteristics. The group emphasized the need for a classification system for angiosperms at the level of families, orders and above. The existed systems are rejected is because they are not phylogenetically classified. The outline of a phylogenetic tree of all flowering plants became established and several well supported major clades involving many families of flowering plants were identified. The new knowledge of phylogeny revealed relationships in conflict with the then widely used modern classifications.
The principles of APG system are retaining the Linnean system of orders and families, Use of monophyletic groups (Consist of all descendants of a common ancestor), taking a broad approach to defining the limits of groups such as orders and families and use of term ‘clades’ above or parallel to the level of orders and families. A major outcome of the classification is the disappearance of the traditional division of the flowering plants into two groups, which are monocots and dicots.
Even though there are several controversies about APG the botanists worldwide are influenced by the concept and are currently practice the system.
Hierarchical clustering and topology for psychometric validationColleen Farrelly
From my graduate work and extended to the field of education.
Citation of paper from which presentation was derived:
Farrelly, C. M., Schwartz, S. J., Amodeo, A. L., Feaster, D. J., Steinley, D. L., Meca, A., & Picariello, S. (2017). The Analysis of Bridging Constructs with Hierarchical Clustering Methods: An application to identity. Journal of Research in Personality.
A Review on Pattern Recognition with Offline Signature Classification and Tec...IJSRD
Pattern recognition gets renowned and come in touch with us since 1960’s and it get lots of attention from all over the world by their outstanding characteristics. In this paper Pattern recognition was presented, including idea, system, application and incorporation. In the meantime, ten descriptions and also more than ten techniques, for example- recognition was compressed. At the end, grouping of PR and structure and its associated fields and also application ranges were presented at point of interest. PR has researcher’s attention attracted in the last few decades as an approach of machine learning because of its areas of extensive spread application. The application area contains business, speech recognition, data mining, communications, military intelligence, automations, medicine, Bioinformatics, document classification and various others. In this review paper many Pattern Recognition approaches have been reviewed and also their pros/cons, application particular paradigm has been presented. The signature Recognition and check framework is used to aware and confirm individual's written hand signature. Presently transcribed mark is a standout amongst the most commonly acknowledged individual traits for personal attributes. Signature verification gives approval in money related and business exchange. Signature confirmation finds its uses in the field of net keeping money, travel permit check framework, gives validation to a hopefuls in broad daylight examination from their marks, charge cards, bank checks.
Introduction to 16S rRNA gene multivariate analysisJosh Neufeld
Short introductory talk on multivariate statistics for 16S rRNA gene analysis given at the 2nd Soil Metagenomics conference in Braunschweig Germany, December 2013. A previous talk had discussed quality filtering, chimera detection, and clustering algorithms.
CHAPTER 8 QUANTITATIVE METHODSWe turn now from the introductioJinElias52
CHAPTER 8 QUANTITATIVE METHODS
We turn now from the introduction, the purpose, and the questions and hypotheses to the method section of a proposal. This chapter presents essential steps in designing quantitative methods for a research proposal or study, with specific focus on survey and experimental designs. These designs reflect postpositivist philosophical assumptions, as discussed in Chapter 1. For example, determinism suggests that examining the relationships between and among variables is central to answering questions and hypotheses through surveys and experiments. In one case, a researcher might be interested in evaluating whether playing violent video games is associated with higher rates of playground aggression in kids, which is a correlational hypothesis that could be evaluated in a survey design. In another case, a researcher might be interested in evaluating whether violent video game playing causes aggressive behavior, which is a causal hypothesis that is best evaluated by a true experiment. In each case, these quantitative approaches focus on carefully measuring (or experimentally manipulating) a parsimonious set of variables to answer theory-guided research questions and hypotheses. In this chapter, the focus is on the essential components of a method section in proposals for a survey or experimental study.
DEFINING SURVEYS AND EXPERIMENTS
A survey design provides a quantitative description of trends, attitudes, and opinions of a population, or tests for associations among variables of a population, by studying a sample of that population. Survey designs help researchers answer three types of questions: (a) descriptive questions (e.g., What percentage of practicing nurses support the provision of hospital abortion services?); (b) questions about the relationships between variables (e.g., Is there a positive association between endorsement of hospital abortion services and support for implementing hospice care among nurses?); or in cases where a survey design is repeated over time in a longitudinal study; (c) questions about predictive relationships between variables over time (e.g., Does Time 1 endorsement of support for hospital abortion services predict greater Time 2 burnout in nurses?).
An experimental design systematically manipulates one or more variables in order to evaluate how this manipulation impacts an outcome (or outcomes) of interest. Importantly, an experiment isolates the effects of this manipulation by holding all other variables constant. When one group receives a treatment and the other group does not (which is a manipulated variable of interest), the experimenter can isolate whether the treatment and not other factors influence the outcome. For example, a sample of nurses could be randomly assigned to a 3-week expressive writing program (where they write about their deepest thoughts and feelings) or a matched 3-week control writing program (writing about the facts of their daily morning routine) to eval ...
COMPUTATIONAL METHODS FOR FUNCTIONAL ANALYSIS OF GENE EXPRESSIONcsandit
Sequencing projects arising from high throughput technologies including those of sequencing DNA microarrays allowed to simultaneously measure the expression levels of millions of genes of a biological sample as well as annotate and identify the role (function) of those genes. Consequently, to better manage and organize this significant amount of information,
bioinformatics approaches have been developed. These approaches provide a representation and a more 'relevant' integration of data in order to test and validate the hypothesis of researchers throughout the experimental cycle. In this context, this article describes and discusses some of techniques used for the functional analysis of gene expression data.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
1. Numerical taxonomy
• Numerical taxonomy or taximetrics, nowadays frequently and perhaps more
appropriately referred to as phenetics, refers to the application of various
mathematical procedures to numerically encoded character state data for
organisms under study.
• Thus, it is the analysis of various types of taxonomic data by mathematical or
computerized methods and numerical evaluation of the similarities or affinities
between taxonomic units, which are then arranged into taxa on the basis of
their affinities.
• According to Heywood the numerical taxonomy may be defined as the
numerical evaluation of the similarity between groups of organisms and the
ordering of these groups into higher ranking taxa on the basis of these
similarities.
• The period from 1957 to 1961 saw the development of first methods and of
theory of numerical taxonomy. Plants as we all know are classified based on
their characters. It was Michel Adanson, a French botanist, who for the first
time put forward a plan for assigning numerical values to the similarity between
organisms and proposed that equal weightage should be given to all the
characters while classifying plants.
• He used as many characters as possible for the classification, and such
classifications came to be known as Adansonian classifications. Numerical
taxonomy was however largely developed and popularized by Sneath and
Sokal.
2. • The application of Adansonian principles and use of modern methods and
electronic data-processing techniques, have helped in the evolution of several
new classifications of plants during the past few decades.
Principles of Numerical Taxonomy:
Numerical taxonomy involves two aspects:
(a) Construction of Taxonomic Groups:
i. In numerical taxonomy, first, individuals are selected and their characters
spotted out. There is no limitation to the number of characters to be
considered. However, the larger the number of characters, better is the
approach for generalization of the taxa.
ii. The resemblances among the individuals are then established on the basis of
character analysis, which can often be worked out with the help of computers,
the accuracy of which depends on the appropriateness in character. The best
way to delimitate taxa is, to utilize maximum number of characters, with similar
weightage given to all of them.
(b) Discrimination of the Taxonomic Groups:
When the taxonomic groups chosen for the study show overlapping of
characters, discrimination should be used to select them. Discrimination
analysis can be done by various techniques, specially devised for such purposes.
Numerical taxonomy is thus, based on certain principles, also called neo
Adansonian principles.
Following seven principles of numerical taxonomy by Sneath and Sokal:
(i) The greater the content of information in the taxa, and more the characters
taken into consideration, the better a given classification system will be.
(ii) Every character should be given equal weightage in creating new taxa.
3. (iii) The overall similarity between any two entities is a function of the individual
similarities in each of the many characters, which are considered for
comparison.
(iv) Correlation of characters differ in the groups of organisms under study. Thus
distinct taxa can be recognized.
(v) Phylogenetic conclusions can be drawn from the taxonomic structure of a
group and from character correlations, assuming some evolutionary
mechanisms and pathways.
(vi) The science of taxonomy is viewed and practiced as an empirical science.
(vii) Phenetic similarity is the base of classifications.
Merits of Numerical Taxonomy:
According to Sokal and Sneath, numerical taxonomy has the following advantages
over conventional taxonomy:
a. The data of conventional taxonomy is improved by numerical taxonomy as it
utilizes better and more number of described characters. The data are collected
from a variety of sources, such as morphology, chemistry, physiology, etc.
b. As numerical methods are more sensitive in delimiting taxa, the data
obtained can be efficiently used in the construction of better keys and
classification systems, creation of maps, descriptions, catalogues, etc. with the
help of electronic data processing systems. Numerical taxonomy has in fact
suggested several fundamental changes in the conventional classification
systems.
c. The number of existing biological concepts have been reinterpreted in the
light of numerical taxonomy.
4. d. Numerical taxonomy allows more taxonomic work to be done by less highly
skilled workers.
Demerits of Numerical Taxonomy:
Numerical taxonomy can however prove to be disadvantageous from the following
points of view:
a. The numerical methods are useful in phenetic classifications and not
phylogenetic classifications.
b. The proponents of “biological” species concept, may not accept the specific
limits bound by these methods.
c. Character selection is the greatest disadvantage in this approach. If
characters chosen for comparison are inadequate, the statistical methods may
give less satisfactory solution.
d. According to Steam, different taxonometric procedures may yield different
results. A major difficulty is to choose a procedure for the purpose and the
number of characters needed in order to obtain satisfactory results by these
mechanical aids. It is necessary to ascertain whether a large number of
characters would really give satisfactory results than those using a smaller
number.
Applications of Numerical Taxonomy:
Numerical taxonomy has been successfully applied in the following studies:
a. Study of similarities and differences in bacteria, other micro-organisms and
several animal groups.
b. Delimitation of several angiospermic genera like Oryza, Sarcostemma
Solarium, and other groups including Farinosae of Engler and a few others.
5. c. In the study of several other angiospermic genera including Apocynum,
Chenopodium, Crotalaria, Cucurbita, Oenothera, Salix, Zinnia, wheat cultivars,
Maize cultivars, etc.
d. Phytochemical data from seed protein and mitochondrial DNA RELP studies
has been numerically analyzed by Mondal et al. to study the interspecitic
variations among eight species of cassia L .Based on the results of
electrophoretic patterns, the degree of pairing affinity (PA) or similarity index
was calculated by the following formula, according to the method of Sokal &
sneth and Romero Lopes et al.:
