-Mosquitoes appear to use odors to help them distinguish what is nearb.docx
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) Randomized comparative design 2) Matched- Pair Design ) Block Design. n a hypothetical situation, you are a member of a research team and have already come up, you believe, is the single doese vaccine for Covid-19: much more effective than J\&J, Moderna, and Pfizer vaccines, with even a higher efficacy. Now comes the testing phase! Choose ONE of the designs above and explain how you vould conduct the study. Please elaborate on your explanatory variables, response variables, factors, control and treatment group, your sampling method( simple andom, stratified , cluster etc), testing period, location. Also, identify any confounding variables,biases, or any other issues and how your study will account for this. .
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2-4-22 James Urton- University of Washington News -Mosquitoes appear t.docx
2/4/22 James Urton, University of Washington News "Mosquitoes appear to use odors to help them distinguish what is nearby, like a host to bite," said senior author Jeffrey Riffell, a UW professor of biology. "When they smell specific compounds, like CO 2 from our breath, that scent seems to stimulate the eyes to scan for visual patterns that are associated with a potential host, and head to them." It's similar to what might happen when humans smell something good. "Imagine you're on a sidewalk and you smell pie crust and cinnamon," said Riffell. "That's probably a sign that there's a bakery nearby, and you might start looking around for it. Here, we wanted to learn what visual elements mosquitoes are looking for after smelling their own version of a bakery." Past research by Riffell's team and other groups showed that smelling CO 2 boosts female mosquitoes' activity level -- searching the space around them, presumably for a host. For this experiment here, Riffell's team Past research by Riffell's team and other groups showed that smelling CO 2 boosts female mosquitoes' activity level -- searching the space around them, presumably for a host. For this experiment here, Riffell's team would track behavior of female yellow fever mosquitoes (Aedes aegypti) after they were exposed to CO 2 . (Like all mosquito species, only females drink blood, and bites from A . aegypti can transmit dengue, yellow fever, chikungunya and Zika.) The researchers wondered, would mosquitoes' eyes prefer certain wavelengths (i.e., colors) in the visual spectrum? To address their question, the researchers used miniature test chambers in which they placed different colored dots (green, blue, purple, red, orange, black, and cyan) at the bottom of the chambers. For their test, they first sprayed CO 2 into the chambers, and then introduced individual mosquitoes into the miniature test chambers. They then recorded how attractive each color was to the mosquitoes. a) The type of gas sprayed into the chambers would have no effect on the average number of contacts (with their mouthparts) with the walls of the chamber. b) The average flight speed of mosquitoes increased significantly with higher concentrations of CO 2 sprayed into the chambers. c) The average number of contacts (with their feet) with the walls of the chamber would vary significantly among different odors. a) ine average amount or time mosquitoes spent looking at each dot would not differ significantly among different colors. e) The mosquitoes would display a similar flight speed regardless of the amount of CO 2 sprayed into the chambers. f) The average number of contacts (with their feet) with the walls of the chamber would not differ significantly among different odors. g) The mosquitoes would spend significantly more time looking at dots of certain colors compared to other colors. h) The average number of contacts (with their mouthparts) with the walls of the chamber would be significantly higher when CO 2 was
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2/4/22 James Urton, University of Washington News "Mosquitoes appear to use odors to help them distinguish what is nearby, like a host to bite," said senior author Jeffrey Riffell, a UW professor of biology. "When they smell specific compounds, like CO 2 from our breath, that scent seems to stimulate the eyes to scan for visual patterns that are associated with a potential host, and head to them." It's similar to what might happen when humans smell something good. "Imagine you're on a sidewalk and you smell pie crust and cinnamon," said Riffell. "That's probably a sign that there's a bakery nearby, and you might start looking around for it. Here, we wanted to learn what visual elements mosquitoes are looking for after smelling their own version of a bakery." Past research by Riffell's team and other groups showed that smelling CO 2 boosts female mosquitoes' activity level -- searching the space around them, presumably for a host. For this experiment here, Riffell's team Past research by Riffell's team and other groups showed that smelling CO 2 boosts female mosquitoes' activity level -- searching the space around them, presumably for a host. For this experiment here, Riffell's team would track behavior of female yellow fever mosquitoes (Aedes aegypti) after they were exposed to CO 2 . (Like all mosquito species, only females drink blood, and bites from A . aegypti can transmit dengue, yellow fever, chikungunya and Zika.) The researchers wondered, would mosquitoes' eyes prefer certain wavelengths (i.e., colors) in the visual spectrum? To address their question, the researchers used miniature test chambers in which they placed different colored dots (green, blue, purple, red, orange, black, and cyan) at the bottom of the chambers. For their test, they first sprayed CO 2 into the chambers, and then introduced individual mosquitoes into the miniature test chambers. They then recorded how attractive each color was to the mosquitoes. a) The type of gas sprayed into the chambers would have no effect on the average number of contacts (with their mouthparts) with the walls of the chamber. b) The average flight speed of mosquitoes increased significantly with higher concentrations of CO 2 sprayed into the chambers. c) The average number of contacts (with their feet) with the walls of the chamber would vary significantly among different odors. a) ine average amount or time mosquitoes spent looking at each dot would not differ significantly among different colors. e) The mosquitoes would display a similar flight speed regardless of the amount of CO 2 sprayed into the chambers. f) The average number of contacts (with their feet) with the walls of the chamber would not differ significantly among different odors. g) The mosquitoes would spend significantly more time looking at dots of certain colors compared to other colors. h) The average number of contacts (with their mouthparts) with the walls of the chamber would be significantly higher when CO 2 was
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Predator detection in any environment is necessary for survival. The aim of the paper is to find out whether crickets use vibrations to detect potential predators. The experimental design involved 10 males and 5 females. Music was used as the source of predation at varying music volumes. In the control experiment, the crickets were not exposed to any music, but in two successive tests, the crickets were exposed to slow and high music. The number of chirping per test was recorded and the numbers of chirps were counted for each test. The experiment was repeated three times. The results showed that the number of chirps decreased as the music volume increased. But the decrease was tremendous when the crickets were exposed to high volume music. Chirping in crickets is used to communicate but when they sense that predators are eavesdropping, they immediately stop chirping or reduce the number of chirps. The study showed that crickets definitely use vibration to sense the presence of predators. When the music volume increased, the numbers of chirps reduce completely.
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In groups, start with a brainstorming session on what you know and don\'t know about
mosquitoes in general. The class will compare lists to see how much collective information we
can gather. Include, specifically, these questions in your brainstorming: Why were the
researchers planning to use only female mosquitoes? Why do female mosquitoes bite for a blood
\"meal\" in the first place? What do male and female mosquitoes live on as their main nutrient
source (if only females take blood meals)? Continuing in your groups, work on the following:
Based on the information above, write a plausible hypothesis that describes a possible
mechanism to explain the differences between the forest and domestic forms in terms of their
specific preferences for humans Based on your hypothesis, write one or more specific
predictions that you could experimentally test. Draw a cartoon of a specific experiment you
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Solution
Blood-feeding as a behavioural adaptation is exceedingly rare in insects. Of the 1-10 million
insect species on earth, only ~10,000 feed on the blood of live animals. Among these, only about
100 species blood-feed preferentially on humans. When biting insects evolve to prefer humans,
they can spread diseases such as malaria and dengue fever with devastating efficiency. The
mosquito Aedes aegypti provides one of the best examples of specialization on humans. It
originated as a wild, animal-biting species in the forested areas of sub-Saharan Africa, where the
subspecies Ae. aegypti formosus is still often found living in forests and biting non-human
animals today. The derived non-African subspecies Ae. aegypti aegypti, in contrast, has evolved
to specialise in biting humans and thus has become the major worldwide vector of dengue and
yellow fevers.
The evolutionary adaptations that help subspecies aegypti exploit humans are most clearly seen
where it has been reintroduced along the coast of East Africa and is known as the ‘domestic’
form. Researchers investigating the outbreak of an unknown illness in Tanganyika in 1952
discovered homes heavily populated by brown-pigmented ‘domestic’ mosquitoes. Subsequent
work in the Rabai region of Kenya in the 1960s and 1970s showed that domestic mosquitoes
readily entered homes, preferred to lay eggs in nutrient-poor river and rain water stored in
containers indoors, were resistant to starvation as larvae, and had evolved a strong preference for
biting humans. Black-pigmented populations of the native African subspecies formosus, known
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This document provides an overview of the role of insect morphology in forensic entomology. It discusses how the study of insects and their development on decomposing bodies can help estimate time of death and associate suspects with crime scenes. Key insect orders that are studied include Diptera (flies) and Coleoptera (beetles). By identifying insects and their life stages found on a body, investigators can determine postmortem interval, or time since death. The morphology and DNA analysis of insect larvae are especially important for forensic analysis.
1-)Review Exhibit 14-2- How could the concept of addressable TV advert.pdf
1.)Review Exhibit 14.2. How could the concept of addressable TV
advertising be applied to some of the other media types
available? What new technologies or integration approaches
would be necessary to make your ideas feasible?
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nise eriy. programing -Stiot aker in -Lem cost. -Geogapiric ficribity -Din of conveting
ia -Flevble -Timely -Higty ciesiolo medum -Peer iapobiran qualbs enpecialy mitoob -
Hiter setiong nithe Magmanes Mestyle selectivity -Good meproducton ousity aud coibr. -
High parsalono inte -Auceat exposire in henq intic erest -Rulatvely taw coit -Fenec
compereng aits -twiy peopechie tognting Duest Mar: -High eistanoe sesctivily. -Creates
teve ot one to one manutang -Fievble -Funatit -Comoin med 7iakimer imius -Sin nayp
eemong nat -fina-
1.
1-) What are the eight subfields of physical geography and what do the.pdf
1.) What are the eight subfields of physical geography and what do they focus
on?
2.) What is the difference between an open system and a closed system?
3.)What are the 5 fields of the Earth's system?
4.) List natural and artificial features found on the surface of the earth.
2.) What is the difference between an open system and a closed system?
3.)What are the 5 fields of the Earth's system?
4.) List natural and artificial features found on the surface of the earth.
1.
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Do Crickets Use Vibrations to Detect Potential Predators?
ABSTRACT
Predator detection in any environment is necessary for survival. The aim of the paper is to find out whether crickets use vibrations to detect potential predators. The experimental design involved 10 males and 5 females. Music was used as the source of predation at varying music volumes. In the control experiment, the crickets were not exposed to any music, but in two successive tests, the crickets were exposed to slow and high music. The number of chirping per test was recorded and the numbers of chirps were counted for each test. The experiment was repeated three times. The results showed that the number of chirps decreased as the music volume increased. But the decrease was tremendous when the crickets were exposed to high volume music. Chirping in crickets is used to communicate but when they sense that predators are eavesdropping, they immediately stop chirping or reduce the number of chirps. The study showed that crickets definitely use vibration to sense the presence of predators. When the music volume increased, the numbers of chirps reduce completely.
INTRODUCTION
Predator detection is an important aspect of survival in any given environment. Crickets are defenseless insects compared to other animals that can rapidly fly or use venomous stingers (Yager, 2012). Therefore it is appropriate for them to detect predators as early as possible to be able to hide or fly away. Without predator detection techniques, then predators can easily locate them given their courtship communication by chirping at night. Communication through vibration detection is not uncommon in crickets. It is essential that crickets communicate and locate potential mates to sustain their population but also evade predators at the same time. A study done by researchers at Indian Institute of Science, Bangalore and Hyderabad Central University, found out that a particular species of bushcricket use disguised vibrations to seek the male (Vaidya, 2015). In usual circumstances, the female would come looking for the calling male to mate. But the bushcricket females camouflage themselves by hiding under jackfruit leaves and silent. The female send the vibration through the tree to guide the male where she is. The researchers found out that the bushcricket has evolved some unusual low frequency call that cannot be detected by predators.
Crickets commonly use acoustical communication to relay messages to one another especially during courtship (Yager, 2012) Crickets produce air-borne sounds which can be heard by humans. Therefore, this kind of communication has been extensively studied for a long time meaning that there is possibility of communication through vibrations. However, vibrational communication has been known to exist for many years but it was thought to be of less importance. In the recent years substrate-borne vibrations have become clear that it is important and widespread. Therefore the p.
Case Study Casey Anthony
The document discusses three methods used by forensic scientists to determine time of death: forensic entomology examines insect evidence on a body to estimate post-mortem interval, algor mortis analyzes body cooling to determine time since death, and rigor mortis observes muscle stiffening to identify a timeframe. These techniques were prominently featured in television shows about forensic analysts solving crimes by precisely calculating the time and manner of death.
Introduction to Biological Sciences.pptx
1. The document discusses the history of theories on the origins of life, from early ideas of spontaneous generation to modern scientific understanding.
2. It describes key experiments that helped disprove spontaneous generation, including Redi's experiments showing that maggots come from flies rather than rotting meat, and Pasteur's experiments showing that microbes could infiltrate supposedly sterile environments.
3. Pasteur's experiments, which demonstrated that sterile broth remained microbe-free unless exposed to air, definitively disproved spontaneous generation and supported the theory that all life arises from pre-existing life, known as biogenesis.
Aliens copy - copy
The document discusses evidence for the existence of alien life forms. It notes that while there is no definitive proof, there are several compelling reasons to believe aliens may exist. Statistics estimate there are billions of planets that could support life in the Milky Way galaxy alone. Some proposed evidence includes microbial life found in meteorites and analyses of the Viking lander results on Mars. The document also outlines current and past methods for searching for intelligent extraterrestrial life through radio telescopes and communicating via messages transmitted to space.
Introduction, history, distribution and economic importance of phytonematology
1. Nematodes are microscopic worms found worldwide that can be plant parasites, animal parasites, or free-living.
2. The history of nematology began with early observations of nematode parasites in ancient texts like the Vedas and Bible. However, the field of nematology emerged in the 18th-19th centuries with early descriptions of plant-parasitic nematodes.
3. In the 20th century, important figures like Nathan Cobb advanced the field through new techniques and species descriptions, and plant-parasitic nematodes were recognized as a serious threat to global agriculture.
Unit1 lab
This document provides information about various forensic science techniques used in crime scene investigations including:
- Analyzing blood samples in a lab using polymerase chain reaction (PCR) which was developed by Alec Jeffreys.
- Using computers to examine fingerprint minutiae like loops and dots to identify matches.
- Edward Foster pioneering fingerprint analysis in Canada and providing fingerprint evidence in the 1911 Jennings murder case.
- Forensic chemists analyzing chemical aspects of samples to identify substances and provide evidence.
- France McGill pioneering forensic chemistry and identifying strychnine poisoning in an elderly couple's bran muffins.
- Ballistics experts using a water tank to safely collect test-fired bullets for comparison to bullets from a crime scene
In groups, start with a brainstorming session on what you know and do.pdf
In groups, start with a brainstorming session on what you know and don\'t know about
mosquitoes in general. The class will compare lists to see how much collective information we
can gather. Include, specifically, these questions in your brainstorming: Why were the
researchers planning to use only female mosquitoes? Why do female mosquitoes bite for a blood
\"meal\" in the first place? What do male and female mosquitoes live on as their main nutrient
source (if only females take blood meals)? Continuing in your groups, work on the following:
Based on the information above, write a plausible hypothesis that describes a possible
mechanism to explain the differences between the forest and domestic forms in terms of their
specific preferences for humans Based on your hypothesis, write one or more specific
predictions that you could experimentally test. Draw a cartoon of a specific experiment you
would want to design to test your predictions. During the lab meeting described in Part I of this
case study. Carolyn brought up the concept of \"what makes a species one species.\" The most
common way that scientists define species is called the \'biological species concept\" (BSC).
Define the BSC What are the criteria used in the BSC in define a species?
Solution
Blood-feeding as a behavioural adaptation is exceedingly rare in insects. Of the 1-10 million
insect species on earth, only ~10,000 feed on the blood of live animals. Among these, only about
100 species blood-feed preferentially on humans. When biting insects evolve to prefer humans,
they can spread diseases such as malaria and dengue fever with devastating efficiency. The
mosquito Aedes aegypti provides one of the best examples of specialization on humans. It
originated as a wild, animal-biting species in the forested areas of sub-Saharan Africa, where the
subspecies Ae. aegypti formosus is still often found living in forests and biting non-human
animals today. The derived non-African subspecies Ae. aegypti aegypti, in contrast, has evolved
to specialise in biting humans and thus has become the major worldwide vector of dengue and
yellow fevers.
The evolutionary adaptations that help subspecies aegypti exploit humans are most clearly seen
where it has been reintroduced along the coast of East Africa and is known as the ‘domestic’
form. Researchers investigating the outbreak of an unknown illness in Tanganyika in 1952
discovered homes heavily populated by brown-pigmented ‘domestic’ mosquitoes. Subsequent
work in the Rabai region of Kenya in the 1960s and 1970s showed that domestic mosquitoes
readily entered homes, preferred to lay eggs in nutrient-poor river and rain water stored in
containers indoors, were resistant to starvation as larvae, and had evolved a strong preference for
biting humans. Black-pigmented populations of the native African subspecies formosus, known
in Rabai as the ‘forest’ form, were found just hundreds of meters away avoiding homes, laying
their eggs in tree holes and ro.
Lesson review
1) Fossil evidence and similarities in DNA sequences provide evidence that evolution has occurred.
2) Archaeopteryx lithographica is considered a transitional form that shares characteristics with both birds and their reptilian predecessors.
3) DNA evidence from related species would likely show similarities, suggesting a shared common ancestor.
Introduction to Forensic Science
This document provides an overview of forensic science. It begins by defining forensic science as the application of science to matters of criminal and civil law. It discusses Locard's principle of exchange and how physical evidence is crucial. Examples of various types of physical evidence are given. The history and development of forensic science is then outlined, including early contributions from China, Orfila, Bertillon, Galton and others. Finally, the organization and units of a typical forensic science laboratory in India are described.
Evolution introduction
The document summarizes the history of scientific thought regarding biogenesis vs spontaneous generation. It describes key experiments by Redi, Spallanzani, and Pasteur that provided evidence against spontaneous generation and established biogenesis as the correct theory. It then provides an overview of the formation and early evolution of life on Earth, including the development of radiometric dating techniques, emergence of the first organic compounds and cells, evolution of photosynthesis and aerobic respiration, and the origin of eukaryotic cells through endosymbiosis.
History of Microbiology-Day 1 part 1.pptx
This document provides an overview of the history and development of microbiology. It discusses early observations of microbes in the 1600s by Hooke and Leeuwenhoek. It also summarizes theories around spontaneous generation and how it was disproven through experiments by Redi, Spallanzani, and conclusively by Pasteur in the 1800s, establishing the germ theory of disease. Major contributors included Leeuwenhoek, Redi, Spallanzani, Virchow, and Pasteur, marking the establishment of microbiology as a scientific field from 1857-1914.
History of microbiology
This document discusses the history of microbiology from its earliest observations in the 1600s to modern discoveries. It describes key early microscopists like Hooke, Leeuwenhoek, and discoveries of bacteria. It also summarizes experiments that disproved spontaneous generation and established germ theory, including work by Redi, Spallanzani, Pasteur, Koch, Lister, and others. Major topics covered include the first observations of microbes, experiments on fermentation and disease causation, development of antisepsis, vaccines for diseases like smallpox and anthrax, and the first antibiotics.
Science Quizzine Prelims (with Answers)
Science Quizzine: A College Science Quiz conducted as part of Pravega '18 at the Indian Institute of Science, Bangalore on 19th January.
insect morphology in forensic entomology with suitable examples
This document provides an overview of the role of insect morphology in forensic entomology. It discusses how the study of insects and their development on decomposing bodies can help estimate time of death and associate suspects with crime scenes. Key insect orders that are studied include Diptera (flies) and Coleoptera (beetles). By identifying insects and their life stages found on a body, investigators can determine postmortem interval, or time since death. The morphology and DNA analysis of insect larvae are especially important for forensic analysis.
Similar to -Mosquitoes appear to use odors to help them distinguish what is nearb.docx (20)
Forensic entomology "Past, Present and the Future"
Forensic entomology "Past, Present and the Future"
Do Crickets Use Vibrations to Detect Potential Predators.docx
Do Crickets Use Vibrations to Detect Potential Predators.docx
Introduction, history, distribution and economic importance of phytonematology
Introduction, history, distribution and economic importance of phytonematology
In groups, start with a brainstorming session on what you know and do.pdf
In groups, start with a brainstorming session on what you know and do.pdf
insect morphology in forensic entomology with suitable examples
insect morphology in forensic entomology with suitable examples
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1-)Review Exhibit 14-2- How could the concept of addressable TV advert.pdf
1.)Review Exhibit 14.2. How could the concept of addressable TV
advertising be applied to some of the other media types
available? What new technologies or integration approaches
would be necessary to make your ideas feasible?
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nise eriy. programing -Stiot aker in -Lem cost. -Geogapiric ficribity -Din of conveting
ia -Flevble -Timely -Higty ciesiolo medum -Peer iapobiran qualbs enpecialy mitoob -
Hiter setiong nithe Magmanes Mestyle selectivity -Good meproducton ousity aud coibr. -
High parsalono inte -Auceat exposire in henq intic erest -Rulatvely taw coit -Fenec
compereng aits -twiy peopechie tognting Duest Mar: -High eistanoe sesctivily. -Creates
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1-) What are the eight subfields of physical geography and what do the.pdf
1.) What are the eight subfields of physical geography and what do they focus
on?
2.) What is the difference between an open system and a closed system?
3.)What are the 5 fields of the Earth's system?
4.) List natural and artificial features found on the surface of the earth.
2.) What is the difference between an open system and a closed system?
3.)What are the 5 fields of the Earth's system?
4.) List natural and artificial features found on the surface of the earth.
1.
1-)Review Exhibit 14-2- How could the concept of addressable TV advert.pdf
1.)Review Exhibit 14.2. How could the concept of addressable TV
advertising be applied to some of the other media types
available? What new technologies or integration approaches
would be necessary to make your ideas feasible?
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nise eriy. programing -Stiot aker in -Lem cost. -Geogapiric ficribity -Din of conveting
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1-) What are the eight subfields of physical geography and what do the.pdf
1.) What are the eight subfields of physical geography and what do they focus
on?
2.) What is the difference between an open system and a closed system?
3.)What are the 5 fields of the Earth's system?
4.) List natural and artificial features found on the surface of the earth.
2.) What is the difference between an open system and a closed system?
3.)What are the 5 fields of the Earth's system?
4.) List natural and artificial features found on the surface of the earth.
1.
1- Remember that enzymes (biological catalysts) are most often ______-.pdf
1. Plot a mtandard curvo uning the protoin standards of lenown concentration an below.
The unkenown sample was difuted 100 times no that they conld be measured within the
sonsitivity scale of the instrument prior to boing analyzed. The sample had an absorbance
of 0.45 at 595 rum. Nbsorbance of protein standards 2. Obtain the final concentration of
the unknown sample: step 1: concentration from standard curve: mg / ml step 2: final
concentration ( x dilution factor) = mg / ml
1.
1- Pick any current Canadian political party of your choice (whether i.pdf
1. Prepare segmented income statements for the three products. Refer to the list
of Amount Descriptions for the exact wording of text items within your income
statement. Round your answers to the nearest dollar. Input expenses as positive
numbers.
AudioMart
Segmented Income Statement
System A, System B, and Headset
Add: Common fixed cost Add: Direct fixed cost Add: Variable expenses
Contribution margin Less: Common fixed cost Less: Direct fixed cost Less:
Variable expenses Operating income Operating loss Sales Segment margin
1
System A
System B
Headset
Total
2
3
4
5
6
7
8
2(a) Prepare segmented income statements for System A and the headsets
assuming that System B is dropped. Refer to the list of Amount Descriptions for
the exact wording of text items within your income statement. Round your
answers to the nearest dollar. Input expenses as positive numbers. (Note: Be
sure to complete 2(b) below the statement.)
AudioMart
Segmented Income Statement
System A and Headset
1
Add: Common fixed cost Add: Direct fixed cost Add: Variable expenses
Contribution margin Less: Common fixed cost Less: Direct fixed cost Less:
Variable expenses Operating income Operating loss Sales Segment margin
1
System A
Headset
Total
2
3
4
5
6
7
8
Suppose that a third system, System C, with a similar quality to System B, could
be acquired. Assume that with C the sales of A would remain unchanged;
however, C would produce only 80% of the revenues of B, and sales of the
headsets would drop by 10%. The contribution margin ratio of C is 50%, and its
direct fixed costs would be identical to those of B.
3(a) Prepare segmented income statements for System A, System C and the
headsets. Refer to the list of Amount Descriptions for the exact wording of text
items within your income statement. Round your answers to the nearest dollar.
Input expenses as positive numbers. (Note: Be sure to complete 3(b) below the
statement.)
AudioMart
Segmented Income Statement
System A, System C, and Headset
Add: Common fixed cost Add: Direct fixed cost Add: Variable expenses
Contribution margin Less: Common fixed cost Less: Direct fixed cost Less:
Variable expenses Operating income Operating loss Sales Segment margin
1
2
System A
System C
Headset
Total
2
3
4
5
6
7
8
AudioMart
Segmented Income Statement
System A, System B, and
Headset
3.
1- Research Certificate based authentication techniques -& research On.pdf
1. Research Certificate based authentication techniques \& research Online Certificate
Status Protocol (OCSP) Responders. What happens if Certificate with private key
becomes compromised or user issued is no longer valid? How can you handle with
organizational infrastructure to prevent access? Why is mutual authentication between
service provider and service consumer important? How can certificates help provide
trust? 2. Research Multi-factor authentication (MFA) implementation best practices. How
can you best implement MFA accounting for human-computer interaction (HCl)
simplicity to still accomplish tasks in timely manner? Why must authentication be mutual
and not one way, so human user can identify computer resource accurately? 3. Discuss
the advantages versus disadvantages of employing Access Control Lists or Role-Based
Access Control (RBAC) versus a policy based approach like Attribute-Based Access
Control (ABAC), defined in NIST (2014) Special Publication 800-162: Guide to
Attribute Based Access Control (ABAC) Definition and Considerations, or Context-
Based Access Control discussed in Chapter 6 of the Sherif textbook. Under which
enterprise situations and environments might one be better approach than the other?
1.
1- What is the history and evolution of government involvement in heal.pdf
1. What is the expected return and standard deviation for the minimum-variance portfolio
of the two risky funds?
[The following information applies to the questions displayed below.] A pension fund
manager is considering three mutual funds. The first is a stock fund, the second is a long-
term government and corporate bond fund, and the third is a T-bill money market fund
that yields a sure rate of 5.5\%. The probability distributions of the risky funds are: The
correlation between the fund returns is 0.25 .
1.
1- What is the difference between a cell membrane and a cell wall- Des.pdf
Cell membranes are flexible phospholipid bilayers that surround and protect the cytoplasm of all cells. Cell walls provide additional structural support on the outside of plant and bacterial cells through a rigid cellulose coating. The endosymbiotic theory proposes that mitochondria and chloroplasts were once free-living prokaryotic cells that were engulfed and established a symbiotic relationship with early eukaryotic cells, evidence includes organelles having their own DNA and similarities to bacteria.
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O ( n 2 )
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14-) Which of the following are valid variable names in Python- Give a.pdf
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14-3- Give some examples of how technology is creating employer-employ.pdf
14-3. Give some examples of how technology is creating employer-employee
rights and policy issues. Then suggest some possible actions that may be
needed.
1.
1-The substantia nigra resides within this brain region- 2-Complex spi.pdf
1-It is assumed that the user provides you with a list of words, one per line, in a text file
called "words.txt". The text file named "words.txt" is located in the directory: D:\Java
\TP4\words.txt.Your application must find the answers to the following questions when it
is run on the command line like this: "java MonLucene mots.txt" where the file "mots.txt"
is in the current directory.
-The first concept to find is the one grouping the most documents and having at least one
word in the list provided by your user. If there is more than one, find them all. (Give only
the words defining the concept. Do not include the list of documents.)
-The second concept to find is the one using two words in the list, and the largest number
of documents. Again, if there is more than one, you have to find them all. These concepts
result in pairs of words that are related because they frequently appear together in the
same document. (Give only the sets of words defining a concept. Do not include the list
of documents.)
-Finally, the last concept to find is the one using three words appearing in the largest
number of documents. If there is more than one, find them all. These concepts result in
triplets of words that are related because they frequently appear together in the same
document. (Give only the sets of words defining a concept. Do not include the list of
documents.)
Index. For the first problem, do a search with each of the words. Then find the most
popular word (or most popular words), i.e. the word appearing in the most documents.
Then repeat with the word pairs and, finally, with the word triplets.
You must submit not only the code, but the solution and result corresponding to the
following list of words :
man
woman
house
home
school
dog
cat
land
country
white
1
children
example
paper
music
letter
river
book
town
room
friend
Tips. If the word "man" is present in 500 documents, then the words "man" and "woman"
must be present in at most 500 documents. Make sure your stats make sense!
-We asked you to use truncation. What would happen if you repeated the experiment
without performing word truncation. Explain your point of view.
O ( n ) , O ( n 2 ) O ( n 3 )
2.
1-The substantia nigra resides within this brain region- 2-Complex sp.pdf
1.The substantia nigra resides within this brain region:
2.Complex spikes would be most likely to be found in this brain area:
3.Neurons in this part of the brain regulate movement indirectly and participate in motor
learning:
4.Neurons in this part of the brain encode force and direction of voluntary movements:
5.Neurons in this part of the brain prepare the motor systems for movement::
Possible Answers:
A.primary motor cortex
B.premotor cortical areas
C.primary sensory cortex
D.basal ganglia
E.cerebellum
F.all of the above
G.none of the above
1.
1- Which of the following will promote variation in a species- I- Meio.pdf
1. Which of the following is a measurement associated with the MIC test?
a) lack of turbidity
b) lack of turbidity and zone of inhibition
c) cell lysis
d) presence of turbidity and cell lysis
e) the zone of inhibition
2. What type of agar is usually used in a Kirby Bauer test?
a) Mueller-Hinton agar
b) MacConkey agar
c) Mannitol salt agar
d) Standard Plate Count agar
e) Standard Sheep Red Blood cell agar
3. When you are adding disks to an agar plate for a Kirby Bauer test, it is important to set
the disks onto the agar surface first, then rearrange them so they are in the desired order.
Group of answer choices
a) True
b) False
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11- Use the simulator to create the entangled state 2101+2110-.pdf
Generate an entangled state by using the simulator to create a quantum state that is the superposition of qubit 1 in state |0⟩ and qubit 2 in state |1⟩ plus the superposition of qubit 1 in state |1⟩ and qubit 2 in state |0⟩, with both terms having equal amplitudes of 1/√2.
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10. Two types of chemical bonding are shown in Figure 2 2 . In the figure, identify each
type as a ( n ) ionic or coialent bond. In the case of the ionic bond, indicate which atom
has lost an electron by adding an arrow to show the direction of electron transfer. For the
covalent bond, color the shared electrons. Type of bond: Type of bond: Figure 2-2
1.
101051010.pdf
11. (3.148) A state runs a lottery in which six numbers are randomly selected from 40
without replacement. A playerchooses six numbers before the state's sample is selected.
(a) What is the probability that the six numbers chosen by a player match all six numbers
in the state's sample? (b) What is the probability that five of the six numbers chosen by a
player appear in the state's sample? (c) What is the probability that four of the six
numbers chosen by a player appear in the state's sample? (d) If a player enters one lottery
each week, what is the expected number of weeks until a player matches all six numbers
in the state's sample?
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19- Ski Quarterly typically sells subscriptions on an annual basis- an.pdf
19. The average defects per unit (dpu) when counting tape measure defects produced by a
given process is = 0.45 gpu (This is based on a study of a sample volume of 100 tape
measures where 45 total defects were recorded). Answer the two questions below. 2
POINTS: What probability distribution does this problem follow? Roissen 2 POINTS:
What is the probability of finding 2 defects or less in the next 100 tape measures
produced? Hint: P ( r 1 ) . Show all work below. 20. The probability of defectives for an
assembly process is 20% ( p = 20 ) . A random sample of ( n = 7 ) assemblies is pulled
from production. Answer the two questions below. 2 POINTS: What probability
distribution does this problem follow? Binomial 2 POINTS: What is the probability the
sample contains exactly two defective assemblies ( r = 2 ) ? Show all work below.
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11- Daniel ordered 200 computer components from Muthu- Each component.pdf
11. Daniel ordered 200 computer components from Muthu. Each component was priced a
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that Daniel received?
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Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Training: ISO/IEC 27001 Information Security Management System - EN | PECB
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