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股利政策：来自上市公司在马来西亚



本文探讨的股息政策为上市公司，确定在马来西亚的财政和业绩影响因素，股利政策的马来西亚上市公司。它也研究了不同的特点，派息公司和非派息公司。此外，它也测试是否股利政策的马来西亚上市公司包含的信息所建议的信号理论。我们发现，有更多的派息公司比非派息公司在马来西亚的上市公司超过2002-2005年。这是真正的多数行业在这一期间。在过去几年2002 - 2003年，红利分配的马来西亚上市公司的证明是不稳定的。向上的趋势成为2003年以后至2005年。本文的结论有不同的特性之间的股息，付款人和非付款人的马来西亚上市公司。前者是公司，相对较低的增长机会，降低企业风险，降低公司杠杆相比，非派息公司。他们往往能够实现更高的盈利能力和较大，在长期的收入相比，非派息公司。盈利能力，衡量的资产回报率和股本回报率，显示出较强的积极线性关系股息收益率和派息比率相比增长机会的因素，企业规模。相反，公司充分利用和坚定的风险呈负相关与股利收益率和派息率。
至于测试信号理论对股利政策的决定因素为马来西亚上市公司，我们发现有一个分红呈正相关，过去收入，很少或根本没有与当前的收入，是负相关的未来收益。这一发现表明，股利政策的马来西亚上市公司是受过去的表现超过其当前和未来的表演。股利政策的马来西亚上市公司的刚性和粘性的经理都不愿意减少或避免股息即使省略的表现，公司正在恶化。至于本研究的局限性，本研究观察派息公司和非派息公司根据董事会和产业。然而，我们不

进一步研究是否有任何关系，工业和股息政策。人们普遍视为是一个行业规范的股息政策，该公司的股利政策可能会极大地影响这些宏观因素。建议关系的股息政策和行业的宏观因素进行分析，在今后的研究。

Deployment and disposal of sediment in areas suitable for their removal and where
interference with the maintenance operations for the dam is reduced.
The choice of the best desiltation strategy is generally made, having in mind the sediment load, granulometry, besides to the physical and hydraulic characteristics of the reservoir.
Dredging or mechanical excavation removes sediment deposits from reservoirs by
hydraulic dredging or dry excavation, even if these methods are expensive because of the large volumes of involved material and the difficulty to find a suitable disposal area. However, ones a large sediment volume is deposited in a reservoir, often excavation is the only available management option.
Hydraulic flushing involves the lowering of the water level and the subsequent removal of sediment through the opening of the bottom outlet to establish a flow along the impounded reach, forming a cone of erosion whose effect is short in time. Such a procedure is very economical since it does not require any particular approach and exploites hydraulic head.
Neverthless it presents some limitations. It brings to draw down or to empty the reservoir.
Besides, flushing causes the sediment to be released from the reservoir at a much higher sediment concentration than in a natural condition.
Siphon dredges are different from a classical dredge because the pump is not present; in this case the sediment moves in a pipeline by means of an hydraulic head between the water surface and the discharge point, that is generally located at the lowest available point downstream the dam. The choice of the removal and treatment typology of the sediment in a reservoir is complex and depends on the interaction multiple of factors. In practice, there are many variables to be taken into account and the correct choice is strictly related to the volume to be removed and to the reservoir characteristics.
In order to better explain the limits of applicability, a short list of examples of desiltation
operations are reported in the following.
3.1 Warsak Dam (Pakistan)
The high sediment concentration passing through the powerhouse produced a severe
damage to the turbines, which suggested the introduction of a semi-circular skimmer wall in front of the reservoir (King and Stevens, 2001). The purpose of the skimming wall was to divert a large percentage of the material from the power facilities. The material was then removed by flushing. The investigation highlighted that flushing operations are sufficiently efficient when they are carried out for 30 days in a year with a reduction of the load close to 30%, otherwise it is possible during the flushing operation to simply shut down the powerhouse and open the bottom outlets for 20 days during the flood peak to obtain a reduction of 58%. The skimming wall is suitable to reduce bed load but there is not positive effect for the suspension loads,
even if an “indirect” benefit could be obtained by shutting down the powerhouse during the high-suspended sediment concentration.
3.2 Tarbela (Pakistan) and Ambuklao (The Philippines) Dams
Evaluating some projects (Tarbela, in Pakistan, and Ambuklao, in the Philippines), Alam (2002) suggest a step-by-step solution to the sedimentation problem of the reservoir through the separation and extraction of sediment. The partial removal of the coarse material in the upstream dam, by employing flow diversion dams; the removal of abrasive sediment in stages, using the settling basin and small reservoirs before it reaches the turbines and, finally, the removal of the finer material through flushing, sluicing and the use of multiple dams and reservoirs.
3.3 Mauvoisin Arch Dam (Switzerland)
Durand (2001) reports some considerations about possible strategies for the solid removal in the Mauvoisin dam in Switzerland. This dam, built in 1951 on a Rhone affluent, La Dranse de Bagnes, with a height of 250 m and a volume of about 203 Mm3 is the highest arch dam of the Western Europe. The upstream rivers transport approximately 300,000 m3 of alluvial material per year. In 30 years of operation about 10 Mm3 of sediments have been trapped in the lake.
The management corporation (Les Forces Motrices di Mauvoisin S.A.) proposed various solutions to the problem: the surge of sediment close the bottom outlet, the creation of a predam to dredge and the raising of the bottom outlet and sluice by about 20 m. The effectiveness and the feasibility of the above mentioned strategies were partially compromised by topographical and structural factors such as an hard entry to the dam and the presence of a tunnel of small dimensions; the curving of the dam, the depth of the sediment level (approximately 175 m), the presence of ice and an avalanche risk. The adopted solution was to raise the level of the bottom outlet and sluice.
3.4 Verbois Dam (Switzerland)
The Verbois dam, which intercepts the Rhode and the Arve rivers (Switzerland), since 1965, has lost about 17% of the water capacity (Hofmann and et al., 2001). The average annual sediment volume is estimated in about 415,000 m3, removal operations are necessary in order to guarantee the perfect functionality of the powerhouse facilities and also of keeping free the channel, used by the barges to transport the Geneva solid waste to the incinerator at Cheneviers. Up to now the periodic emptying of the Verbois reservoir has been the only technique adopted in order to avoid the sedimentation process of the reservoir. This operation is normally carried out every three years, in June, when generally the flood events occur in the
Rhode. Every flushing operation evacuates approximately 370,000 m3 of sediment.
3.5 Génissiat Dam (France)
The desiltation of the Génissiat dam (France), 100 m high and with a storage volume of about 60 Mm3, is carried out every three years by means of emptying procedure conducted with a discharge of 450 m3•s-1 in a season in which the Rhode has an average flow rate of 360 m3•s-1 (Bouchard, 2001). The simultaneous emptying of the upstream Swiss reservoirs make harder the operations. The flushing is carried out in two phases: an initial lowering of the water level to evacuate sediment from Génissiat reservoir, followed by a partial filling up in order to facilitate the passage of sediment, coming from the Swiss reservoirs. The whole operation is subordinate to some limitations, which do not allow the Génissiat dam to exceed a suspended solid concentration of 10 g•l-1, even if the releases of the Swiss dams produce a higher upstream concentration.
3.6 Algerian Dams
The first dams built in Algeria before 1900 were completely filled up by sediment and
actually they can not be used; the total water capacity of over 70 reservoirs is about 4,340 Mm3 of which 20% is already lost due to the sediment load. It can be predicted, using the actual trend, that at the end of 2010 more than ¼ of the total water capacity will be lost (Benblidia, 2001). The more impressive cases are respectively the Fergoug dam which was partially destroyed in 1927 by the thrust due to flood water and mud, the d’Oued Fodda dam where the bottom outlet is under 40 m of mud and the d’Ighil Emda dam where, during the extraction of 17,5 Mm3 of material by way of the density current method, between 1965 and 1982, 350 Mm3of water were lost, about 20 m3 of water for every m3 of extracted sediment. Actually, in Algeria, the usual technique is the mechanical dredges, which can be dissembled and transported from one site to another. Between 1962 and 1980 approximately 19 Mm3 were extracted from 4 reservoirs, using a dredge with a capacity of 340,000 m3•(month)-1, but such a method needed 5 m3-6 m3 of water for every m3 of extracted mud. At the end of the 80s a new model of dredge was introduced. It was characterized by a extraction ratio equal to 1, which allowed this dredge to extract about 4 Mm3 of mud from Fergoug dam in 6 months; the mud delivered into the river, was directed to the sea. The gained benefits were compared with those of the desiltation operations, the
dam raising and even the construction of a new dam. Bearing in mind the cost per m3 of recovered water, it turned out that the cost of the dredging operation, while being the same as that of the construction of a new dam, is by far inferior to a dam raising.
3.7 Jarnsjon Lake (Sweden)
A survey on the Jarnsjon Lake (Sweden) put in evidence a significant presence of
contaminated sediment. The adopted solution in order to reduce the spreading of the contaminated sediment is a special dredging. In detail, a dry excavation within a protective geotextile screen, able to contain most of the contaminated sediments. The treatment of the dredged material includes a further mechanical dewatering and the final disposal in a landfill, where the highly contaminated sediment are separated from the slightly toxic by way of a geotextile screen. Before reaching such a choice, a possible solution was to deviate the river and to deposit the dredged material in a completely isolated area; however, the river is characterized by very high discharge and this requires the realization of the diversion channel before the maximum
discharge occurs; moreover the lake dredging would have created further difficulties because it is in an area with glacial-fluvial deposits, characterized by an large mobility of the groundwater.
3.8 Cachì Reservoir (Costa Rica)
The 54 Mm3 Cachì hydropower reservoir has been constructed on the Raventzon river
(Rica Coast) in 1966. In 1973 it was completely emptied using the flushing operation and in the following 18 years it was subjected to 14 flushing operation. In this way, the sediment volume was reduced from 82% to 27 % (Morris and Fan, 1997).
The flushing operations were accurately overseen and documented to assess their
effectiveness. The operations were organized in three different phases: a slow lowering of the water level followed by a rapid lowering lasting 5-10 hours, and finally a free discharge phase lasting two-three days. Obviously the released sediment volume was strictly related to the flow rate, the incoming solid transport and the period when the flushing was carried out. In particular it was found that the higher values of solid transport take place between the end of the phase of rapid lowering and that of free discharge with a peak concentration of 400 mg•l-1.
3.9 Piaganini Dam (Italy)
Bartoletti et al. (1990) described the operation planned to remove a sediment volume of 500,000 m3 taken from Piaganini dam on the Vomano river (Central of Italy), so to restore the original water capacity. The removal of sediment by means of a dry excavation and the direct disposal of watersolid mixture in the Vomano river had some difficulties related to the need of ensuring that the natural flow rate had turbidity characteristics compatible with the Italian law requirements, even if such a strategy was favorable to development of beaches close to the delta river. The strategy adopted, instead, was the hydraulic dredging of sediment after an opportune dewatering process and its following transport to a disposal. The use of watertight trucks was
imposed in order to avoid any water or mud loss.
The dewatering process involved the use of:
- A revolving screen, adopted to separate particles of dimensions over 20 mm -25 mm; these were then transported to the dump by trucks;
- A centrifugal mud cleaner in order to separate the sand having a granulometry over
74μm;
- Winnow dewatering, by which water was separated through vibration from sand. The sand characterized by a humidity level lower than 30%, was carried to a bin by means of a conveyer belt and, then dumped in a landfill area by trucks;
- A flocculation tank, where the incoming sediment flow from the centrifugal cleaner,
was added to a chemical substances in order to improve the separation of solid particles.
- Two clarifiers, in parallel, to separate mud; the clear water was sended back to the lake and the mud was carried to the landfill area.
3.10 Pozzillo Reservoir (Italy)
Tamburino et al. (1993) report a study regarding the removal operations on Pozzillo
reservoir, situated on the Salso river (Sicily, Italy). The usual management involved
remarkable ranges of the water level (up to 30 m) over a very short time that induced small bank mudslides with consequent sediment depositions close to the gates.
At that time the water capacity was about 123.7 Mm3 in comparison with 140.5 Mm3
effectively available at the start of the dam operation. The solid lead to the reservoir was estimated at approximately 29 Mm3 between 1959 and 1984, corresponding to 2,000 m3•yr-1 per km2 of catchment.
The operations carried out in order to reduce the solid contribution have concerned the river network upstream of the dam, by means of maintenance works of the upstream catchment (520 check dams and 50 bottom steps).
Settlement operations were also carried out in order to control the siltation process. The first was aimed at removing the deposits close to the bottom outlets in order to allow the passage of a natural incoming flow through the gates.
The disadvantages of such operation are related to the low natural flows, the risk of the disfunctioning of the gates in the case of flood and the elevation of the riverbed downstream of the dam. The second operation had the objective to limit the solid load close to the bottom outlets, in order to address the sedimentation and accumulation in the center of the lake. Such a procedure was carried out by means of a small volume near the gates; however such an expedient has only a short validity.
3.11 Rendina Dam (Italy)
The Abate Alonia dam on the Olivento river (Southern Italy); was realized in the fifties and has a upstream catchment of 400 km2 and a lake with a water capacity of approximately 23 Mm3. The sedimentation dynamics, in the seventies, made desiltation necessary, through dredging during which, a sediment volume of about 2 Mm3-2.5 Mm3 was removed from the lake. Currently another desiltation using the same method has been planned to recover a volume of approximately 1.5 Mm3but has not yet been carried out. Such an operation nevertheless will be accompanied by subsequent sediment treatment of the same type such as the Piaganini dam.
3.12 Pontecosi Catchment (Italy)
Lucignani (2002) reports the processes, which were carried out during the desiltation of the Pontecosi catchment (Northern Italy). The adopted procedure was that of flushing through the gates after which the sediment was released at different intervals in order to prevent and to minimize the harmful effects on the aquatic and fluvial environment. Actually, the adopted flushing procedure was realized, by way of a water release, some months before the complete emptying, through the bottom gates for short intervals of time, but in concomitance with the flood period. Therefore such an operation takes the shape of an extension in time of a natural event, to be determined according to the characteristics of each event. It is anticipated therefore, by a kind of “preparation”, in order to reach the planned date for the true emptying with the catchment relatively clear of sediment and with a modest ecological impact. The preliminary phase of emptying of the reservoir is the chemical and eco-toxicological analysis of the sediment law so as to exclude the presence of toxic
substances, which could compromise the river ecosystem.
The operations involved a flow rate variable between 70 m3•s-1and 100 m3•s-1 with a
removal sediment volume equal to 29,000 m3.
4 FINAL REMARKS
Even though at first glance, the more efficient methods appear to be the “free flow
flushing ” and the “flushing under pressure”, it is clear that these approaches suffer of
problems related the heavy solid concentrations. Flushing is therefore limited and, in some cases, rarely used in the management of dams in the Mediterranean area and semiarid climate because of the reduced water availability.
French and Swiss experiences have showed how difficult could be the control of the
sediment concentration during the flushing operation. In fact the average sediment
concentrations level verified, more than 5 g•l-1, could be dangerous for the ecosystem.
Among the Italian experiences of desiltation with flushing, the most interesting was related to the Pontecosi reservoir, even if the total sediment volume removed was very low (29,000 m3).
As far as the legislative standards are concerned, the best example was conducted on the Piaganini dam: the desilting operations have been performed by inserting some sections for chemical-physical treatment into the operation lines in order to reduce the sediment concentration in agreement with the law and to achieve the maximum moisture value for solid waste. Moreover, such technology is used in the presence of any substance that can cause the waste to be classified as “special”, however in this case, as for harbour desiltation, it is necessary to introduce a treatment line to clarify water. The limit of applicability of this technology is represented by the high cost of the treatment since, in that of the Piaganini reservoir the cost was equal to 15€/m3. It is important to specify that this treatment also involves a partial recovery of select sediment (gravel and sand) to be reused as aggregate production and that the transport cost is about 40% of the total value. Notwithstanding the high costs, the same activities are necessary, even to restore the efficiency of the bottom outlet,
bypass, etc. Anyway a case a cost-benefit analysis must be performed in order to verify the cost-efficiency of this practice compared to Watersheds could be competitive: with these removal techniques.
Some studies (Balacco et al., 2003) put in evidence that many desiltation techniques to recover water resources are uneconomic: the recovered water capacity, in fact, will be lost again after the following filling up phenomena, therefore the cost of that recovered volume will be higher than 1,5 €/m3.
The short analysis reported suggests that a silted up reservoir and its rehabilitation are open problems, the complexity of which is related not only to the technical aspect but also to legislative restrictions.
The choice of strategy could be approached by two different stages: it is necessary to
improve the studies and to find approaches able to reduce the sediment contribution, but also the technical legislation have to look into the problem heaving more attention in order toestablish a real difference between these strategies and the general disposal operations.

The customer must arrive our factory visit, I must introduce, asks the person of high skill to help the translation English, the little brother urgently needs the commentary: Welcome fellow distinguished guests to visit the machine shop, our new building occupying a land area of 20000 squares, are completed in December, 2008, at present is being under construction and installs debugs the equipment, estimated will complete in the end of the month, mid-April the inputs will produce, estimated will produce can be 35K each month. Was sorry very much at present cannot let everybody see to a complete production condition, we can explain and the scene union way, lets you as far as possible many understanding organization factory ~ if in the visit process, you has any question, may although proposed, we can have the personnel to do for you explain ~ The organization factory probably has about the staff 300 people, at present this building 1,2,5,6 and produces the location for ours work, now we are at a building, is the ramming manufacture department, is responsible for NCT, the ramming manufacture.The ramming manufacture department staff probably has 82 human of ~ please here to walk, here has three NCT equipment (numerical control machine), two Taiwan calendar Pu and a Amada.NCT numerical control engine bed has the efficiency to be high, accuracy high and processing convenient characteristic.It the formula which makes through the analysis blueprint inputs the control bench to send out the command control different drift impact plate to achieve the different ramming effect, has flushes mesh, nibbles, the cutting edge angle and so on many kinds of processing way ~ in the factory NCT equipment may process many kinds of plates at present, thickness request is.Our multipurpose NCT pulls the product or produces some small batches product ~ works as us Please here walk, here is the mold depositing area, uses for to deposit us to produce the aircraft type the mold, at present has pould frame 16, probably may deposit set of mold ~ Here is the ramming 1 area and 2 areas, altogether has 45 tons, 60 tons, 80 tons, 110 tons, 160 ton and 200 ton different tonnage punch presses 37 and 60 ton continual punch presses. Some quantity quite stable aircraft type, can consider likely uses the die stamping the way to produce ~ Here is the ramming 3 areas, was introducing a moment ago NCT or mold ramming processing from now on plate, we will be able to continue to process, for instance: Hits the rivet, pulls out attacks the tooth and so on, can use here the equipment, at present in the factory has pulls out hole machine 3, attacks tooth machine 4, rivet machine 1 ~ processes after these working procedures, we can to the plate carry on the knee bend, at present in the factory has booklet bed 10. In if the engine case has the part which the need unifies or on the one hand and on the other hand union, can use the spot welding, at present in factory a little welding machine 14. (Because in spot welding time temperature is high, water tank is carries on radiation to machine equipment) OK, this is building ramming manufacture department condition ~ Please here step onto the staircase, 2 buildings are organization factory host office district, can have including RD, ME, PMC, MPM, QE and so on about 35 people in here work ~ OK, please here walk the staircase (on elevator), 4 buildings and 5 buildings at present vacant, but also has not planned use ~ Good, we arrived 5 buildings, here is assembles the manufacture department, can establish 3 groups to install wiring in here, that side another half region assembles the material classification storage area, can lay aside the line material, the hardware, the revertex class material, the organization components and Bao Cai~ assembles the manufacture department to be able to have about the staff 53 people, at present also in construction stage, therefore we only can see has a group to install wiring in here, asks the excuse me ~ group to install wiring mainly is can assemble some independent engine cases, in the process can have in view of the power source, the line material, the ventilator peaceful gauge test and the function tests ~ for instance to look at the ventilatorWhether normal work, power source voltage electric current test and so on ~ Please here step onto the staircase (on elevator), was sorry very much, our 6 building floors are brushing guard against the static electricity paint, has not done, therefore is unable to look temporarily, only can glance over in the elevator mouth, I can probably introduce here condition, 6 buildings are the baking varnish manufactures department, at present everybody may see roasted the paint line to one already to erect automatically finished, he contained in front of one to process the line and automatically roasts paint line ~ in to roast the paint line that side the diagonally opposite prints the room, could have moves copier, oven roasts the paint line with silk ink pad three ~ to have probably 62Staff ~ The baking varnish met the past to process starts, after high-quality goods, could start the autocycle production from that side, carried on the pre-degreasing, the clear laundering, the epithelium, the table adjusted and so on the pretage working procedure, after in order to clean up machine component surface greasy dirt ~ then process drying, then passed through the automatic spraying system, carried on the static electricity spraying and the automatic spray point (spray point is in order to reduce not good or nips flowered request), after then the roasting, carried on the quality testing, not good has not acted according to requests to carry on superficial printing (silk India or moves India), again baked above ~ is baking varnish basic flow ~ To this, to the machine shop the introduction basic conclusion, thanks everybody participation ~ thanks the distinguished guests arrives visits, has the deficiency, please propose, thanks ~

This way, please take the stairs (up elevator), I am sorry, 6 floor, our floor is antistatic brush paint, and also do NOT, therefore temporarily unable to look into and can only glance at the elevator lobby, I will perhaps tell us here condition, 6 floor, paint manufacturing department are, at present we can see a

Automatic paint line has been set up, he included a pre-treatment line and an automated paint line ~ in the paint lines are printed diagonally opposite side of room, there will be a pad printer, screen printing ovens Units One and Three Units Units ~ paint line has approximately 62 staff ~

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