Monday, January 27, 2020

The Kalabagh Dam Consequences

The Kalabagh Dam Consequences The Kalabagh dam is controversial for many reasons. A key reason has to do with the decision making process, which is highly centralized, politically coercive, and technically flawed. Regrettably, when the need is for broad-based stakeholder consultations, the existing trend is towards even greater centralization. For instance, the rotating chairmanship of the Indus River System Authority has recently been converted into a permanent appointment, provincial resolutions against Kalabagh have been given short shrift, the Council of Common Interests (CCI) has consistently ignored the matter and community concerns continue to be met with blatant disregard. Small wonder then that the political leadership in the smaller provinces and civil society are up in arms against Kalabagh. In this essay, we critically examine four contested aspects of the Kalabagh dam. These relate to: water availability; environmental impacts; food and energy; and technical and financial feasibility. The work of colleagues is gratefully acknowledged. Water availability is an over riding concern. Is surplus water available to justify the Kalabagh project? WAPDA itself the generic source has sown confusion on this issue. It cites two average flow figures: 123 MAF (million acre-feet) and 143 MAF. The first calculation is based on a 64-year period (1922-1996) and includes both wet and dry cycles. The second estimate is based on a much shorter and wet cycle period of 22 years (1977-1994). Since the total requirement (inclusive of the additional allocation of 12 MAF under the 1991 Water Accord), is calculated at 143 MAF, there is a clear short fall of 20 MAF if we use the first estimate. This means Kalabagh may remain dry every 4 out of 5 years. Even the higher flow figure (143 MAF) overlooks certain factors. The first of these is system (evaporation and seepage) losses. If such losses increased from 6.2 MAF post Mangla to 14.7 MAF post-Tarbela, presumably, they will be even higher post-Kalabagh. This would have adverse implications for inter-provincial water distribution. New irrigation infrastructure appears untenable in view of these losses, since the increased upstream off-takes would be at the expense of downstream flows. This concern is also ignored when presenting Kalabagh as a replacement for Tarbela. Tarbela is projected to lose 5.3 MAF of its storage capacity by the year 2010. Since Kalabagh would, essentially, be replacing this loss, the Right and Left Bank canals would divert even more of Sindhs allocations than they presently are. In addition, illegal off-takes would also tend to be exacerbated. Consider now the environmental implications of constructing yet another large dam on the Indus River ecosystem. A catalogue of existing degradation provides the context for future environmental impacts of dams like Kalabagh. Degradation of the Indus delta ecosystem, as a result of reduced water outflows, is already a highly visible phenomenon. The present level of silt discharge, estimated at 100 million tons per year, is a four-fold reduction from the original level before large dams were constructed on the River Indus. The combination of salt-water intrusion (some reports show this as 30 km inland), and reduced silt and nutrient flows has changed the character of the delta considerably. The area of active growth of the delta has reduced from an original estimate of 2,600 sq. km (growing at 34 meters per year) to about 260 sq. km. The consequent ravages to the ecosystem have been exceptionally severe, in particular to the mangroves, which are its mainstay. They sustain its fisheries, act as natural barriers against sea and storm surges, keep bank erosion in check and are a source of fuel wood, timber, fodder and forest products, a refuge for wildlife and a potential source of tourism. Without mangroves and the nutrients they recycle and the protection they provide, other components of the ecosystem would not survive. The direct and indirect benefits of mangroves are enormous. In 1988, Pakistan earned Rs.2.24 billion from fish exports, of which shrimps and prawns constituted 72%. Additional income is generated from fuelwood, fodder and forest products was another Rs.100/- million. Not only is this revenue at risk from mangrove loss, but the physical infrastructure required to replace the natural protection provided by the mangroves (dykes, walls) would entail enormously high capital and maintenance costs. The health of mangroves is directly linked to fresh water inflows. Releases below Kotri barrage in most years and excluding floods average 10 MAF. Of this, little or none actually reaches the mangroves. The rest is lost due to evaporation or diversions. According to the Sindh Forestry Department, about 27 MAF is required to maintain the existing 260,000 ha. of mangroves in reasonably healthy condition. This is 27 MAF more than currently available, a situation which has contributed to ecosystem instability and mangrove loss. Within the framework of the Indus Water Accord, an additional 12 MAF would be diverted for upstream dam construction including Kalabagh. This would reduce existing sub-optimal flows further and aggravate an already critical situation. A community of about 100,000 people, residing on the northern side of the Indus Delta, depends on the mangroves for their livelihood. The prevailing view is that being under privileged, such communities are prone to degrade their environment. However, it is difficult to fathom why poor communities should endanger the very basis of their existence. The more likely explanation is that community practices have not changed, but they appear unsustainable because the resource base has begun to degrade. Communities are more often the victims than the agents of such degradation are. The real culprits are water diversion; biological and chemical water contamination and large-scale commercial practices, compounded both by institutional ignorance and complicity in such practices. Mangrove loss is only one among the many manifestations of biodiversity deficits emerging along the entire length of the Indus River ecosystem. The ecosystem has been severely fragmented over time by its extensive network of dams, canals and barrages, resulting in threats to a variety of species and organisms, the most notable among them being the Indus dolphin and the palla fish. Both can be classified as indicator species, as their impending loss represents the loss of a way of life, characterized by interdependence between communities and their environment. Another myth firmly embedded in the minds of our planners is that large dams are the perfect flood prevention devices. The evidence for Pakistan shows otherwise; that its large dams not withstanding, there has been no reduction in the incidence and intensity of floods nor in the associated losses in lives, crops, livestock and infrastructure. There is no seeming pattern to the floods other than the fact that they could have coincided with wet cycles. In actual fact, the severity of flood impacts appears to have increased after the two major dams, Tarbela and Mangla, were constructed. In actual fact, the shrinking of the riverbeds due to water diversions reduces their absorptive capacity and hence enhances the danger of flooding. River ecosystems have a natural capacity to deal with floods and these natural processes provide many benefits. Flood plains, wetlands, backwaters are commonly referred to as natures sponges; they absorb and purify excess water as a hedge against lean periods. They act as spawning grounds for fish and wildfowl. The floods themselves replenish agricultural soils. Communities living around these areas adapt to this natural rhythm and use its bounty to ensure reliable and sustainable livelihoods. It has also been pointed out that dams dont prevent floods, they merely create flood threat transfer mechanisms. The solution is to work with communities, rely on their knowledge and to supplement their flood mitigation and coping strategies. Two of the most commonly cited arguments in favor of large dams relate to food security and energy. Such arguments have become increasingly compelling in the light of perceived threats to food security and the recent furor surrounding the private power projects. We examine both of these arguments in turn. Additional water from Kalabagh can enhance crop production in three ways: by irrigating new land; by enhancing cropping intensity on existing land; or through yield enhancement. The first option appears tenuous. It is claimed that Kalabagh will irrigate close to an additional million hectares of barren land, and bring Pakistan closer to wheat self-sufficiency. However, the reports of the National Commission on Agriculture and the National Conservation Strategy suggest otherwise. They indicate that available cultivable land is almost fully utilized, leaving little scope for extensive cultivation. Between 1952 and 1977, about 80% of the increase in total cropped area was due to the cu ltivation of new land. Since then, this proportion has fallen dramatically, with double cropping accounting for the bulk of the increase. The reports suggest that in addition to the water constraint a very tangible land constraint exists as well. Crop production can also be increased through cropping intensity increases or crop yield enhancements. Both are water dependent and establish an a priori justification for Kalabagh. The NCS report states that at present 12.2 million hectares of land are available for double cropping while only 4.4 million hectares are being double cropped clearly water is the constraining factor. With respect to yield enhancements, water is again required in large quantities by the high yielding seed varieties (wheat, cotton, rice, maize) and for its synergetic effects upon chemical inputs. However, a critical choice needs to be made here. Does one opt for additional water, or can the same results be achieved through improved water use efficiency? Higher water retention in the system risks aggravating an already massive problem of water logging and salinity. In fact, the controversial and exorbitantly expensive ($780 million), 25-year National Drainage Plan project has been launched to mitigate its impacts. Kalabagh is bound to add to the problem, not only in its immediate environs but also where new irrigation infrastructure is to be situated. A clearly preferred choice is to use existing water more efficiently, and to focus on the necessary institutional changes for its equitable distribution. Some of the proposed measures are canal and watercourse rehabilitation, land leveling, improved on-farm water management and, at the policy level, switching demand based management while protecting the needs of the poor small farmers. These are clearly win-win solutions as they are relatively low cost, efficient, equitable and environmentally friendly. After the recent commotion over private power, the government began to hype up Kalabagh as an alternative source of cheap and clean energy. In the process, it switched adroitly from its earlier position that energy demand had been overstated, to one where it now posits a deficiency in supply. However, the cheap energy argument is becoming increasingly untenable both financially and technically. Donors such as the World Bank and the Asian Development Bank are unlikely to provide concessional funding for Kalabagh. This reflects their commitment to the thermal based private power projects, as well as the censure they have faced for getting embroiled in projects with major environmental and resettlement costs. And even if concessional funding was available, it is still not clear that hydel unit costs would be lower than thermal, once these costs are factored in. At this point, the whole debate appears to be moot since the government is scampering for funds to keep the economy afloat against the backdrop of sanctions. Even so, renewed policy statements suggest there is a resolve to proceed when the situation permits. Apart from the political compulsions, there is an inertial aspect to this decision as well. Institutional and financial paralysis inhibits the scope for energy conservation, efficiency improvements and diversification. The options have been identified often enough: on the supply side these are reduction of transmission and distribution (TD) losses and renewable energy development technologies (solar, wind, biomass). On the demand side, both technical and economic options exist for energy conservation. While these have been employed to some extent (tariff increases, energy efficient lighting), the efforts are a far cry from the kind of sustained initiatives launched in some South Asian countries, such as Thailand, where revamped e nergy supply systems are part of a larger network, with linkages to RD, the private sector and trade facilities. The title of a study Tarbela Dam Sedimentation Management, carried out by TAMS-Wallingford (March 1998) is self-explanatory. It shows that a de-silted Tarbela would yield the same irrigation benefits as Kalabagh, but at one-seventh the cost in net present value terms. The study states that, replacement of [irrigation and energy] benefits by constructing a new dam and reservoir down stream is feasible, but will be expensive, environmentally damaging and socially harmful. An alternative option cited is the construction of new outlets at the Tarbela Dam that will enable sediment to be flushed from the reservoir. The proposed Tarbela Action Plan is based on computer simulations of sediment flows. These simulations were designed to determine whether flushing was technically feasible and could be used to enhance long run storage capacity and to predict future sedimentation. Based on these simulations, a three phased action plan was proposed. The implementation of this plan would ensure long term and sustainable storage with only a small annual reduction in capacity. The estimated increase in retention at 6 MAF is exactly what the Kalabagh reservoir is designed to hold. Our conclusion is that the burden of proof is on those who advocate building the Kalabagh Dam. Our findings show that it is not economically, socially or environmentally viable. Also, the proposed benefits are based on faulty or misunderstood premises and, in any case, there exist in each case more viable and cost effective alternatives.

Sunday, January 19, 2020

Angiosperms and Gymnosperms

PRACTICAL 6 Seed Plants (Gymnosperms and Angiosperms) OBJECTIVES: 1. To describe the features of seed plant life cycle and the concept of the dominant generation. 2. To describe the life histories and related reproductive structures of gymnosperms and angiosperms. 3. To summarize the features that distinguish gymnosperms and angiosperms. 4. To discuss the advantages of seed plants to dominate land and their evolutionary adaptations on land. EXPERIMENT 1: Gymnosperms INTRODUCTION:Gymnosperms (720 species in 65 genera) are ancient seed plants that include ginkgos (Division Ginkgophyta), cycads (Division Cycadophyta), conifers (Division Coniferophyta), and gnetophytes (Division Gnetophyta). The term gymnosperm derives from the Greek wood roots gymnos, meaning â€Å"naked†, and sperma, meaning â€Å"seed†. They are naked-seeded plants meaning that the ovule, which becomes a seed, is exposed on the sporophyte at pollination. Mature seed are not enclosed in a fruit as are tho se of flowering plants. Gymnosperms are best known for their characteristic cones, called strobili.These strobili display sporangia and their subsequently developing ovules and pollens. Gymnosperms do not require water for sperm to swim to reach the egg as do seedless plants. Instead, immense amount of windblown pollen are produced. Most gymnosperm cones, including the familiar pine cone, are complex whorls of leaflike, woody scales around a central axis. The smallest cones include those of the junipers (Juniperus) which have flesh scales fused into a structure resembling a berry. The larger cones may weigh 45 kg and are produced by cycads.In most gymnosperm species, the female megastrobilus is larger and distinctive from the male microstrobilus. MATERIALS: 1. Living or preserved specimens of * Ginkgo (Ginkgo biloba) * Cycad (Cycad sp. ) * Pine (Pinus sp. ) 2. Prepared slide of gymnosperms 3. Compound microscope 4. Dissecting microscope 5. Slide and coverslip 6. Forceps 7. Distilled water PROCEDURE: A ginkgo: 1. A prepared slide of male strobilus of Ginkgo biloba is examined. The microsporophyll, microsporangium, and strobilus axis are identified. 2. A prepared slide of female strobilus of Ginkgo biloba is examined.The megasporophyll, megasporangium, and strobilus axis are identified. A cycad: 1. A female cycad is examined. The leaves, megasporophylls, megasporangia and developing seed are identified. 2. The pollen cone bears on male cycad. Pollinated cone is examined and microsporophyll, microsporangia, and pollen grains are identified. A pine: 1. A male cone and female cone of Pinus sp. are obtained. 2. A prepared slide of longitudinal section of female cone is examined. The megasporophyll, megasporangia, and ovule are looked. 3. A prepared slide of longitudinal section of male cone is examined.The microsporophyll, microsporangia, and pollen grains are looked. 4. Fertilization occurs after the pollen tube penetrates the megasporangium and allows sperm to ent er the archegonium and fuses with the egg. The zygote will form after fertilization. A prepared slide of the developing embryo of Pinus sp. is examined. 5. Mature seed cone is obtained. The seed with wing attached to the ovuliferous scale is found. 6. The anatomy of pine leaf one needle is examined. The following: epidermis, stoma, photosynthetic mesophyll, endodermis, phloem, xylem, and resin duct are identified.RESULTS Cross section of Ginkgo Biloba Cross section of Cycad Cross section of female pine Cross section of male pine EXPERIMENT 2: Angiosperms INTRODUCTION: Angiosperms are the most abundant, diverse, and widespread of all land plants. They are successful because they are structurally diverse, have efficient vascular systems, share a variety of mutualisms (especially with insects and fungi), and have short generation times. Flowering plants are important to human because our world economy is overwhelmingly based on them.Indeed, we eat and use vegetative structures (roots, stems and leaves) as well as reproductive structure (flowers, seeds, and fruits). You will find that many of the vegetative structures are quite similar to those of more ancient plants shown. The roots, stems, and leaves of flowering plants function just as those of ferns and cone bearing plants. Flowers and fruits, however are unique adaptations of angiosperms. Biologists believe that the extraordinary adaptiveness of these structures has led to the proliferation of the incredible diversity found among flowering plants. MATERIALS: 1.Living specimens of angiosperms (dicots & monocots) with roots, stems, leaves, flowers, fruits and seeds. (Imperata cylindrical, zea mays, Carica papaya, Phaseolus sp. ) 2. Prepared slide of angiosperms (dicots & monocots) 3. Compound microscope 4. Dissecting microscope 5. Slide and coverslip 6. Forceps 7. Distilled water PROCEDURE: Roots: 1. A root of dicots and monocots are obtained for morphology and anatomy study. 2. The root systems of representati ve dicot and monocot are looked. 3. Cross section of dicot root shows the central stele is surrounded by a thick cortex and epidermis.The following: epidermis, cortex, parenchyma cells, starch grains, pericycle, endodermis, phloem, and xylem are identified. 4. Cross section of monocot roor shows this root has a vascular cylinder of xylem and phloem that surrounds a central pith. The following: epidermis, cortex, endodermis, Casparian strip, pith, phloem, and xylem are identified. 5. A prepared slide of the roots for some other species is obtained and their structure is identified. Stems: 1. The longitudinal section of shoot tip of representative dicot and monocot is studied.The following: leaf, leaf primordium, apical meristem, ground meristem, axillary bud, vascular bundle, and pith are identified. 2. A dicot and monocot is obtained and a cross section of the stems is made and the arrangement of vascular bundles is examined. The anatomy between this dicot and monocot is compared. 3 . For both type of plants, epidermis, cortex, phloem, xylem, cambium, pith, and vascular bundle are identified. Leaves: 1. Fresh specimen provided in lab is looked. Flowering plants show a variety of morphology to identify, such as, leaf arrangements and leaf venation. 2.Using fresh prepared slide or prepared slide of some flowering plants, the structure of the leaves is studied. The leaves have common features: cuticle, air space, lower epidermis, upper epidermis, palisade mesophyll, spongy mesophyll, and vascular bundle are noticed. Flowers: 1. The longitudinal section of some flowers is looked. The parts of a flower: stigma, pistil, style, ovary, sepal, receptacle, peduncle, petal, filament, stamen, and anther are named. 2. A prepared slide of a cross section of mature anther (lily anther) is examined. Sections of the four microsporangia are found.Pollen grains within a microsporangium is looked. 3. A prepared slide of a cross section of an ovary (lily ovary). The several ovules are found. Megaspore mother cell within megasporangium is looked. The megasporangium develops is studied. The placenta, integuments, microphyle, egg cell, central cell, and polar nuclei are identified. 4. The demonstration slide of double fertilization is observed and the zygote, primary endosperm nucleus, and central cell of the female gametophyte are identified. Fruits and seeds 1. A sample of dry, dehiscent fruits (peanuts) is obtained.The fruit wall, cotyledon, plumule of embryo, embryo, radical, cotyledon, and seed coat are identified. 2. A sample of simple flesy fruits (tomato, a berry) is obtained. Pericarp, mesocarp, endocarp, locule, seed and placenta are identified. 3. A prepared slide of corn grain (Zea mays), a caryopsis fruit is examined. The pericarp of a corn grains is tightly united and inseparable from the seed. The pricarp, endosperm, cotyledon, coleoptiles, plumule bud, embryo, radical, and coleorhizae are identified. RESULTS Cross section of root Cross section of stemCross section of leaves Cross section of flower Cross section of seed DISCUSSION For the lower vascular plants the important evolutionary development was in the water and food conducting tissues of the sporophyte. As we move on through the plant kingdom the next important development was the seed. The free living gametophyte is a vulnerable phase of the life cycle. Reproduction by seeds is a less chancy procedure and has other advantages for plant survival and dispersal. Seeds can be remarkably tolerant of environmental extremes heat, cold and drought.Unlike free-living gametophytes seeds can postpone their development until conditions are right. And, of course, we find them very convenient for plant propagation. Already in the coal-measure forests there were plants that reproduced by seeds. Some were the so-called â€Å"seed ferns†. Others were the ancestors of the plants we now know collectively as â€Å"gymnosperms†. In these plants the seeds are not enclosed i n an ovary, as in the flowering plants; they grow on the surface of a modified leaf in a strobilus or cone. â€Å"Gymnosperm† means naked seed. Alternation of generations is still involved in the reproduction of these plants.They are all heterosporous: the microspores are shed as pollen, whereas the megaspore germinates in the strobilus to produce the female gametophyte. The archegonia in this gametophyte get fertilized by sperm from the male gametophyte and the zygote grows to produce an embryo which is enclosed in a seed coat of tissue from the parent plant. Gymnosperms were the dominant land plants in the age of dinosaurs, the Cretaceous and  Jurassic periods. The surviving gymnosperms in the Coniferophyta, Cycadophyta and Ginkgophyta are similar in their woody habit and pattern of seed development but are not closely related.The characteristic feature of angiosperms is the flower. Flowers show remarkable variation in form and elaboration, and provide the most trustworth y external characteristics for establishing relationships among angiosperm species. The function of the flower is to ensure fertilization of the ovule and development of  fruit  containing  seeds. The floral apparatus may arise terminally on a shoot or from the axil of a leaf (where the  petiole  attaches to the stem). Occasionally, as in  violets, a flower arises singly in the axil of an ordinary foliage-leaf.More typically, the flower-bearing portion of the plant is sharply distinguished from the foliage-bearing or vegetative portion, and forms a more or less elaborate branch-system called an  inflorescence. There are two kinds of reproductive cells produced by flowers. Microspores, which will divide to become  pollen grains, are the â€Å"male† cells and are borne in the  stamens  (or microsporophylls). The â€Å"female† cells called megaspores, which will divide to become the egg cell (megagametogenesis), are contained in the  ovule  and enc losed in thecarpel  (or megasporophyll).The flower may consist only of these parts, as in  willow, where each flower comprises only a few stamens or two carpels. Usually, other structures are present and serve to protect the sporophylls and to form an envelope attractive to pollinators. The individual members of these surrounding structures are known as  sepals  and  petals  (or  tepalsin flowers such as  Magnolia  where sepals and petals are not distinguishable from each other). The outer series (calyx of sepals) is usually green and leaf-like, and functions to protect the rest of the flower, especially the bud.The inner series (corolla of petals) is, in general, white or brightly colored, and is more delicate in structure. It functions to attract  insect  or  bird  pollinators. Attraction is effected by color,  scent, and  nectar, which may be secreted in some part of the flower. The characteristics that attract pollinators account for the popularity of flowers and flowering plants among humans. While the majority of flowers are perfect or  hermaphrodite  (having both pollen and ovule producing parts in the same flower structure), flowering plants have developed numerous morphological and  physiological  mechanisms to reduce or prevent self-fertilization.Heteromorphic flowers have short carpels and long stamens, or vice versa, so animal  pollinators  cannot easily transfer pollen to the pistil (receptive part of the carpel). Homomorphic flowers may employ a biochemical (physiological) mechanism calledself-incompatibility  to discriminate between self- and non-self pollen grains. In other species, the male and female parts are morphologically separated, developing on different flowers. POST-LAB QUESTIONS: 1. How to distinguish between a male and female cone of pine?The male cone will form at the bottom of the tree and it is much smaller than the female and the male produces the pollen grains and the female produces the ovule and forms at the top of the tree. 2. Explain the characteristics of gymnosperm seeds to aid in dispersal. Many gymnosperms have winged seeds that aid in dispersal. Generally, gymnosperms have heavy seeds so the wings only assist in moving the seed a short distance from the parent plant. 3. List some uses for conifers. Economically, conifers are very important as they are a major source of timber.The majority of the world’s sawn timbers come from conifers. Exploitation of this resource from wild growing forests is still going on in many parts of the world, but there is an obvious trend especially in the developed world to phase this out and use more sustainable planted or seeded resources. There are many species with highly different wood properties, some of these are extremely valuable and used for fine cabinet making or expensive applications in construction. Wood from conifers is also an important source of pulp for paper and cellulose fibres such as rayon.Conifer s also very important in horticulture, especially in regions with a temperate climate. Several species have yielded hundreds of different cultivars and new ones are constantly appearing on the market. In some countries conifers have a role to play in traditional medicine and in religious ceremonies and, of course, our Christmas trees can be seen as a form of this kind of use. A few conifers even have edible seeds; well known are those of certain pines. 4. Lists the common characteristics of seeds plants. i. They have vascular tissue ii.They use seeds to reproduce iii. They all have body plans that include leaves, stems, and roots. 5. Contrast between dicots and monocots, the two classes of flowering plants. Monocots| Dicots| Herbaceous| May be woody or herbaceous| Embryo with single cotyledon| Embryo with 2 cotyledons| Flower parts in multiple of three| Flower parts with multiple of 4 or 5| Parallel-veined leaves| Net-veined leaves| Bundles of vascular tissue are scattred throughout the stem| Vascular bundle in the stem forms rings| Roots are adventitious| Root develop from radicle| . Discuss the features of plant flowering fruits and seeds. Seeds  develop from ovules in the ovary, and at maturity consist of an  embryo  and a reserve food supply surrounded by a protective covering, the  seed coat. The diversity of flowering plants assures diversity among their seeds, but, unlike fruits, which have numerous variations, structural plans for seeds are few. The reserve food can be stored either in or out of the embryo and the  cotyledons, the seed leaves can remain either below ground or be elevated above the surface when germination occurs.Fruits are ripened ovaries containing seeds with sometimes additional flower or inflorescence tissues associated with them. Only angiosperms produce flowers and fruits. From a botanical viewpoint, many of the foods we eat as vegetables are fruits, for examples, tomatoes, green beans, squash, eggplant, and peppers. Fru its apparently arose as a means not only of protecting the seeds, but as a way to ensure their dispersal. REFERENCES 1. http://faculty. unlv. edu/landau/gymnosperms. htm 2. http://www. kew. org/plants/conifers/uses. html 3. http://edhelper. com/ReadingComprehension_37_251. html

Saturday, January 11, 2020

Media Influences on Social Norms and Health

Media’s Authority on Illness: Messages the Public learn In today’s culture, the media influences many aspects of daily life. For the purpose of this research the media will encompass television, newspaper, magazines, and internet and the messages learned from these outlets relating to illness. In addition, investigating how people in power authoritative the messages portrayed on the media outlets and the agenda behind the messages. The people or organizations that influence the media have a big impact on the way we learn or feel about illness.Human beings can come to accept most anything that is repeated on the news, published in magazines, and said by people of influence. People in power will include, for the purpose of this argument, those with credentials, self-help â€Å"experts†, and funding agencies for specific illnesses. The media and people in power control what the public learns about illness. Moreover, publicizing illness when there is a finical gain o r what socio-economic group suffers from the disorder or illness. According to Brumberg (2000), anorexia nervosa was a relatively unheard of disease until the 1980s.Today it is so commonplace that women will see a friend who has lost weight or looks skinny and refer to her as â€Å"looking anorexic. † If this disease was only labeled as anorexia around thirty years ago how did it explode into mainstream culture so quickly? There are a number of different arguments to pose: elite women from Ivy League universities took interest in the topic, the three most popular women’s’ magazines published many stories about the disease, and people of social status died from this disease (Brumberg 2000).Different diverse newspapers became intrigued and jumped on the anorexia bandwagon, even including pictures of gauntly women on the covers claiming outrageously high numbers of women that now have this disease (Brumberg, 2000). It is also important to note that nearly all of th e anorexia sufferers were white and came from rich families (Brumberg 2000). These girls coming from wealthy families obviously had the money to pay for treatment and doctors. It is possible that their families ran in circles with doctors, scientists, and people that have social status to make powerful decisions.These decisions generated media attention leading to the general public being flooded with movies, documentaries, and news broadcasts (Brumberg 2000). If these affected by this new disease of anorexia were poor and underprivileged arguably the public would not have learned about anorexia and it might possibly not exist today. Like anorexia, the disease of fibromyalgia did not exist as a labeled disorder until the mid seventies (Barker 1999). Remarkably now six million Americans are diagnosed a syndrome which did not exist thirty years ago.Self-help literature and the internet is one of the biggest facilitators in generating information to the public as well as funded organiz ations (Barker 1999). According to Barker (1999) fibromyalgia is characterized by many different symptoms and it can present itself differently for every case. Interesting enough during interviews Barker performed with twenty-five women only one woman had not read self-help books, but she relied on information from her support group leader to learn about her syndrome (Barker 1999).Debatably, these women may have never learned they had a syndrome, lived their lives without media messages, and possibly saving money, time, and heartache dealing with this new diagnosis. By looking at the new diseases of fibromyalgia and anorexia it is clear that the media and people of influence taught the general public about these illnesses and facilitated there widespread exposure, but how does the media choose what messages to deliver and what messages to keep away from the general public.Clearly, anorexia was a disease of wealthy, attractive girls which could make a good story, generating money for the news outlets, doctors, and pharmaceutical companies. In addition, fibromyalgia could generate the same type of financial gain for doctors and medical companies, but are these the only motivators for the media and powerful people. According to Armstrong, Carpenter, and Hojnacki (2004) who constructed a study about whose deaths matter in America with attention to the mass media and the same motivators were congruent with the results they found.Consistent with powerful people controlling messages in the media, Armstrong et. al (2004) discovered that celebrities and members of Congress become involved with different diseases promoting attention and consequently leading to these promoted diseases appearing on national media outlets. For example, when Karen Carpenter died of anorexia it brought many celebrities together to publicize anorexia teaching the public the importance of treatment for anorexia (Brumberg 2000).The media claims that the diseases they cover are those that affect the general population but ironically the people that dictate what these general population diseases are, consist of the influential people and those with credentials (Armstrong et. al 2004). During Armstrong et. al (2004) study they also discovered that the media is more likely to cover diseases that affect white people than black people, even if a disease is killing many more blacks than whites. Mass media focuses more on the color of someone’s skin and social status than the mortality rate of a certain disease or illness.This absurdity can also be seen not only with what the media covers, but with what they choose not to cover. From the 1960s to 1980s black men in Harlem had a lower rate of survival than men in Bangladesh (McCord and Freeman 1990) and this was not publicized or put on any major media outlet. If white men had a lower survival rate it would have been all over the major news headlines because of their socio-economic status and control towards the media. The unequal coverage of media attention because of issues of power, race, and money in turn condition the general public’s perception about illness.Even people that are educated and intelligent many times cannot control being manipulated by the media to go along with messages they are delivering. What’s more is if the doctors, celebrities, and powerful funding companies are not endorsing an illness, therefore the media does not cover it, the general public will not ever hear about it. Surely, if anorexia suffers would have been black women with low socio-economic status the top women’s magazines in the country would not have published stories, news broadcasts would have been non-existent, and quite possibly anorexia would only be known to few and not a mainstream disease.Diseases that affect minority groups draw far less media attention and Armstrong et. al (2004) theorizes that it stems from predominantly white broadcasters and media executives. Furthermore, specul ating that media workers would rather focus on illness that affects their particular social class and group (Armstrong et. al 2004). This theory continues to support the argument that the people in power are working through the media to control the messages the public learn about illness and disease.Organized advocates, research scientists, and politically active organizations also have a high investment in messages the media relays to the public. Advocates call great attention to their cause threw drawing on media attention and aligning themselves with politicians that support their cause in accordance with the policy goals of the politician (Armstrong et. al 2004). It is a win for all involved; the politicians get the media coverage they want for their agenda, again sending messages about illness in a political format.People in power and the media have an enormous function in controlling what messages the public learns about illness. There are many different reasons they want to c ontrol the messages humans take in through various types of media outlets. Facilitating their own social group, money, and political gain are just a few addressed in this argument. The mass media, controlled by powerful people decide what illness they want the public to learn about and often times it has more to do with race and status than how many people are actually suffering or even dying from a disease. ReferencesMcCord, C. & Freeman, H. P. (1990). â€Å"Excess Mortality in Harlem. † New England Journal of Medicine, 322:25 p. 173-177. Brumberg, J. J. (2000). â€Å"Anorexia Nervosa in Context. † Fasting Girls pp. 10-21, 33-42 264-267. Armstrong, E. , Carpenter, D. & Hojnacki, M. E. (2006). â€Å"Whose Deaths Matter? Mortality, Advocacy, and Attention to Disease in the Mass Media. † Journal of Health Politics and Law 31:4, pp. 729-772. Barker, K. (2002). â€Å"Self-Help Literature and the Making of an Illness Identity: The Case of Fibromyalgia Syndrome (FMS) . † Social Problem 49:3, pp. 279-300.

Friday, January 3, 2020

How Well Do Individual Investors Perform - 810 Words

Week2 question 1. How well do individual investors perform? Is the average performance consistent with your personal experience or expectation? According to the articles, a statement had been made that the average individual investor underperforms the market for not taking the cost into consideration. But the performances would be various across the time horizon. In the long-horizon, the underperformance would exist even regardless the tax effect or frequently trading. However, in the short horizon, the individual investor could get the return from the situation contrary to the long run. The performance is inconsistent with the theory. Based on the efficient market hypothesis, all investors are rational, they would choose the same portfolios with the same risk to gain the excess return. Under this hypothesis, the market would work efficiently. However, the transaction cost as well as the tax payment need to be considered in the real situation. However, it consistent with my personal experience. People would easily trade frequently because of the market change. Therefore, the transaction fees of frequently trading would eventually became a large proportion of the cost which would lead to the underperformance of market. 2. Do you think institutional investors suffer from cognitive biases? Explain why or why not. Yes. The institutional investors might suffer from the cognitive biases. Compared to the individual investors, the institutional investors as the skilled investorsShow MoreRelatedEthical Investments1644 Words   |  7 PagesEthical investments are similar to traditional investments with only one difference. Both traditional and ethical investors pursue the same goal of capital gains, higher income and/or preservation of capital for future needs. 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